/* roulang page: index */
:root {
    --primary: #0D6A5B;
    --primary-light: #249F8D;
    --dark-green: #0A2B28;
    --accent: #E77A34;
    --accent-light: #F1A95E;
    --bg: #F6F4EE;
    --surface: #FFFFFF;
    --text: #1D2B2A;
    --text-secondary: #5E6E6C;
    --border: #E6E2D8;
    --gradient-brand: linear-gradient(135deg, #0B4E46 0%, #148B79 45%, #2BB6A0 100%);
    --gradient-accent: linear-gradient(135deg, #E77A34 0%, #F1A95E 100%);
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 8px;
    --shadow-card: 0 2px 8px rgba(13, 46, 40, 0.06);
    --shadow-hover: 0 14px 30px rgba(13, 46, 40, 0.12);
    --sidebar-width: 248px;
    --sidebar-width-lg: 220px;
    --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: var(--font-stack);
    background-color: var(--bg);
    color: var(--text);
    font-size: 16px;
    line-height: 1.6;
    letter-spacing: 0.02em;
    overflow-x: hidden;
}
a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s, background 0.2s, transform 0.2s, box-shadow 0.2s;
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
button,
input {
    font-family: inherit;
    border: none;
}
h1,h2,h3,h4,h5 {
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: 0.01em;
    color: var(--text);
}
p {
    color: var(--text-secondary);
    line-height: 1.7;
}
ul, ol {
    list-style: none;
}
.btn {
    border-radius: 999px;
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 600;
    border: none;
    transition: all 0.25s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    letter-spacing: 0.02em;
    line-height: 1.2;
}
.btn:focus {
    box-shadow: 0 0 0 3px rgba(13, 106, 91, 0.25);
    outline: none;
}
.btn-primary-custom {
    background: var(--surface);
    color: var(--primary);
}
.btn-primary-custom:hover {
    background: var(--surface);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.14);
}
.btn-outline-light-custom {
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.55);
}
.btn-outline-light-custom:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.85);
    transform: translateY(-2px);
}
.btn-dark-custom {
    background: var(--primary);
    color: #fff;
}
.btn-dark-custom:hover {
    background: var(--primary-light);
    color: #fff;
    transform: translateY(-2px);
}
.btn-accent-custom {
    background: var(--gradient-accent);
    color: #fff;
}
.btn-accent-custom:hover {
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(231, 122, 52, 0.28);
}

/* ===== 左侧 Sidebar ===== */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--dark-green);
    z-index: 1040;
    display: flex;
    flex-direction: column;
    padding: 0;
    transition: width 0.3s ease, transform 0.3s ease;
}
@media (max-width: 1199.98px) {
    .sidebar {
        width: var(--sidebar-width-lg);
    }
}
@media (max-width: 991.98px) {
    .sidebar {
        display: none;
    }
}
.sidebar-brand {
    padding: 28px 24px 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.brand-logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
}
.brand-main {
    font-size: 26px;
    font-weight: 800;
    color: #fff;
    letter-spacing: 0.03em;
    line-height: 1.2;
}
.brand-badge {
    display: inline-block;
    background: var(--gradient-accent);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    padding: 3px 12px;
    border-radius: 999px;
    letter-spacing: 0.08em;
}
.sidebar-nav {
    padding: 18px 12px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 12px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 15px;
    font-weight: 500;
    transition: all 0.2s;
    position: relative;
    margin-bottom: 2px;
}
.nav-item:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
}
.nav-item.active {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    font-weight: 600;
}
.nav-item.active::before {
    content: '';
    position: absolute;
    left: -12px;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 22px;
    border-radius: 0 4px 4px 0;
    background: var(--primary-light);
}
.nav-item i {
    font-size: 16px;
    width: 20px;
    text-align: center;
}
.sidebar-bottom {
    padding: 20px 24px 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.sidebar-bottom .contact-line {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.45);
    margin-bottom: 2px;
}
.sidebar-bottom .contact-value {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.85);
    font-weight: 500;
    margin-bottom: 12px;
}
.sidebar-bottom .copyright {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.35);
    padding-top: 14px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

/* ===== 移动端顶部栏 ===== */
.mobile-header {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 56px;
    background: var(--dark-green);
    z-index: 1045;
    padding: 0 16px;
    align-items: center;
    justify-content: space-between;
}
.mobile-logo {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 20px;
    font-weight: 800;
    color: #fff;
}
.mobile-logo .brand-badge {
    font-size: 10px;
    padding: 2px 8px;
}
.hamburger {
    background: transparent;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    cursor: pointer;
}
.hamburger span {
    display: block;
    width: 20px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: 0.3s;
}
.hamburger:hover span {
    background: var(--primary-light);
}
@media (max-width: 991.98px) {
    .mobile-header {
        display: flex;
    }
}

/* ===== 抽屉菜单 ===== */
.drawer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 43, 40, 0.5);
    z-index: 1050;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}
.drawer-overlay.show {
    opacity: 1;
    visibility: visible;
}
.mobile-drawer {
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    height: 100vh;
    background: var(--dark-green);
    z-index: 1055;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
    padding: 24px 16px;
    overflow-y: auto;
}
.mobile-drawer.open {
    transform: translateX(0);
}
.mobile-drawer .drawer-brand {
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding-bottom: 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.mobile-drawer .nav-item {
    color: rgba(255, 255, 255, 0.78);
    font-size: 15px;
    padding: 13px 14px;
    border-radius: 10px;
}
.mobile-drawer .nav-item.active {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
}
.mobile-drawer .drawer-contact {
    margin-top: auto;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.4);
    font-size: 13px;
}
@media (min-width: 992px) {
    .mobile-drawer,
    .drawer-overlay {
        display: none;
    }
}

/* ===== 主内容区 ===== */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    background: var(--bg);
}
@media (max-width: 1199.98px) {
    .main-content {
        margin-left: var(--sidebar-width-lg);
    }
}
@media (max-width: 991.98px) {
    .main-content {
        margin-left: 0;
        padding-top: 56px;
    }
}
.content-wrap {
    max-width: 1120px;
    margin: 0 auto;
    padding: 28px 40px 40px;
}
@media (max-width: 991.98px) {
    .content-wrap {
        padding: 20px 24px 36px;
    }
}
@media (max-width: 575.98px) {
    .content-wrap {
        padding: 16px 16px 32px;
    }
}

/* ===== Hero ===== */
.hero-section {
    margin-bottom: 48px;
}
.hero-card {
    background: var(--gradient-brand);
    border-radius: var(--radius-lg);
    padding: 44px 48px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 44px rgba(13, 46, 40, 0.16);
    color: #fff;
}
.hero-card::before {
    content: '';
    position: absolute;
    top: -60px;
    right: -40px;
    width: 260px;
    height: 260px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
    pointer-events: none;
}
.hero-card .eyebrow {
    display: inline-block;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.08em;
    color: rgba(255, 255, 255, 0.75);
    background: rgba(255, 255, 255, 0.1);
    padding: 5px 14px;
    border-radius: 999px;
    margin-bottom: 18px;
}
.hero-card h1 {
    font-size: 40px;
    line-height: 1.25;
    color: #fff;
    margin-bottom: 16px;
    font-weight: 800;
    max-width: 580px;
}
.hero-card .hero-sub {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.82);
    line-height: 1.7;
    max-width: 460px;
    margin-bottom: 28px;
}
.hero-card .hero-cta {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}
.hero-media {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    height: 320px;
    box-shadow: 0 14px 30px rgba(0, 0, 0, 0.22);
}
.hero-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.hero-media::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(160deg, rgba(13, 106, 91, 0.1) 0%, rgba(10, 43, 40, 0.2) 100%);
}
.hero-badge {
    position: absolute;
    bottom: 18px;
    right: 18px;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(6px);
    border-radius: 999px;
    padding: 12px 20px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    z-index: 2;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.hero-badge .num {
    font-size: 22px;
    font-weight: 800;
    color: var(--text);
    line-height: 1.2;
    font-variant-numeric: tabular-nums;
}
.hero-badge .label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}
@media (max-width: 991.98px) {
    .hero-card {
        padding: 32px 24px;
    }
    .hero-card h1 {
        font-size: 30px;
    }
    .hero-media {
        height: 220px;
    }
}
@media (max-width: 575.98px) {
    .hero-card {
        padding: 24px 18px;
        border-radius: 18px;
    }
    .hero-card h1 {
        font-size: 26px;
    }
    .hero-cta .btn {
        width: 100%;
    }
}

/* ===== 指标条 ===== */
.metrics-strip {
    margin-bottom: 56px;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 20px 0;
}
.metric-item {
    text-align: center;
    padding: 8px 12px;
}
.metric-item .metric-num {
    font-size: 34px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.2;
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.02em;
}
.metric-item .metric-label {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 6px;
    font-weight: 500;
}
@media (max-width: 767.98px) {
    .metrics-strip .row {
        row-gap: 16px;
    }
    .metric-item .metric-num {
        font-size: 26px;
    }
}

/* ===== 三步上手 ===== */
.steps-section {
    margin-bottom: 64px;
}
.section-header {
    margin-bottom: 36px;
}
.section-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--accent);
    background: rgba(231, 122, 52, 0.1);
    padding: 5px 12px;
    border-radius: 999px;
    margin-bottom: 12px;
}
.section-title {
    font-size: 30px;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 8px;
}
.section-desc {
    font-size: 15px;
    color: var(--text-secondary);
    max-width: 560px;
}
.steps-row {
    display: flex;
    align-items: flex-start;
    gap: 0;
    position: relative;
}
.step-item {
    flex: 1;
    padding: 20px 24px;
    position: relative;
    text-align: center;
}
.step-item .step-num {
    width: 48px;
    height: 48px;
    background: var(--gradient-brand);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
    margin: 0 auto 16px;
    box-shadow: 0 6px 16px rgba(13, 106, 91, 0.25);
}
.step-item h3 {
    font-size: 18px;
    margin-bottom: 8px;
}
.step-item p {
    font-size: 14px;
    line-height: 1.7;
    max-width: 220px;
    margin: 0 auto;
}
.step-connector {
    flex: 0 0 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    margin-top: 40px;
}
.step-connector::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 1px;
    border-top: 2px dashed #ccc;
    transform: translateY(-50%);
}
.step-connector .connector-dot {
    width: 10px;
    height: 10px;
    background: var(--accent);
    border-radius: 50%;
    position: relative;
    z-index: 2;
    box-shadow: 0 0 0 4px rgba(231, 122, 52, 0.15);
}
.step-end {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    padding-left: 24px;
}
@media (max-width: 991.98px) {
    .steps-row {
        flex-direction: column;
        position: relative;
        padding-left: 24px;
    }
    .steps-row::before {
        content: '';
        position: absolute;
        left: 12px;
        top: 30px;
        bottom: 30px;
        width: 2px;
        background: linear-gradient(180deg, var(--primary) 0%, var(--primary-light) 50%, var(--accent) 100%);
        border-radius: 2px;
    }
    .step-item {
        text-align: left;
        padding: 16px 12px;
        position: relative;
    }
    .step-item .step-num {
        margin: 0 0 10px;
    }
    .step-item p {
        margin: 0;
    }
    .step-connector {
        display: none;
    }
    .step-end {
        padding-left: 12px;
        padding-bottom: 20px;
    }
}

/* ===== 案例证明 ===== */
.case-section {
    margin-bottom: 64px;
}
.case-card {
    background: var(--surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}
.case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}
.case-card .case-media {
    height: 180px;
    overflow: hidden;
}
.case-card .case-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.case-card:hover .case-media img {
    transform: scale(1.03);
}
.case-body {
    padding: 24px 24px 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.case-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    background: rgba(13, 106, 91, 0.08);
    color: var(--primary);
    padding: 4px 12px;
    border-radius: 999px;
    margin-bottom: 12px;
    align-self: flex-start;
}
.case-body h3 {
    font-size: 19px;
    margin-bottom: 10px;
}
.case-body p {
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 18px;
    flex: 1;
}
.case-metrics {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 14px;
}
.case-metrics .m {
    background: rgba(243, 241, 236, 0.7);
    border-radius: 999px;
    padding: 5px 12px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text);
}
.case-metrics .m strong {
    font-weight: 800;
    color: var(--primary);
    font-variant-numeric: tabular-nums;
}
.case-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    align-self: flex-end;
    transition: gap 0.2s;
}
.case-link:hover {
    gap: 12px;
    color: var(--primary-light);
}
.case-link i {
    font-size: 13px;
}

/* ===== 资讯列表 ===== */
.news-section {
    margin-bottom: 64px;
}
.news-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 28px;
}
.view-all {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.2s;
}
.view-all:hover {
    gap: 10px;
    color: var(--primary-light);
}
.news-card {
    background: var(--surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    padding: 24px;
    display: flex;
    flex-direction: column;
    height: 100%;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}
.news-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
    border-color: rgba(13, 106, 91, 0.15);
}
.news-card .news-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
    flex-wrap: wrap;
}
.news-date-badge {
    background: rgba(13, 106, 91, 0.08);
    color: var(--primary);
    font-size: 12px;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 999px;
    font-variant-numeric: tabular-nums;
}
.news-cat {
    font-size: 12px;
    font-weight: 500;
    background: rgba(231, 122, 52, 0.1);
    color: var(--accent);
    padding: 4px 12px;
    border-radius: 999px;
}
.news-card h3 {
    font-size: 17px;
    line-height: 1.45;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-card p {
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    color: var(--text-secondary);
}
.read-more {
    margin-top: auto;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.2s;
}
.read-more:hover {
    gap: 10px;
    color: var(--primary-light);
}
.news-empty {
    border: 2px dashed var(--border);
    border-radius: 20px;
    padding: 48px 24px;
    text-align: center;
    background: rgba(255, 255, 255, 0.5);
    color: var(--text-secondary);
}
.news-empty i {
    font-size: 32px;
    color: var(--primary-light);
    margin-bottom: 12px;
    display: block;
}
.news-empty p {
    font-size: 15px;
}

/* ===== FAQ ===== */
.faq-section {
    margin-bottom: 64px;
}
.faq-accordion {
    border-top: 1px solid var(--border);
}
.faq-item {
    border-bottom: 1px solid var(--border);
    background: transparent;
}
.faq-item .accordion-header {
    background: transparent;
    border: none;
}
.faq-item .accordion-button {
    background: transparent;
    color: var(--text);
    font-size: 16px;
    font-weight: 600;
    padding: 20px 0;
    border: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    width: 100%;
    text-align: left;
    cursor: pointer;
    position: relative;
    transition: color 0.2s;
}
.faq-item .accordion-button:hover {
    color: var(--primary);
}
.faq-item .accordion-button:focus {
    box-shadow: none;
    outline: none;
}
.faq-item .accordion-button::after {
    content: none;
}
.faq-item .accordion-button .faq-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(13, 106, 91, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform 0.3s ease, background 0.3s;
}
.faq-item .accordion-button .faq-icon i {
    font-size: 12px;
    color: var(--primary);
    transition: transform 0.3s ease;
}
.faq-item .accordion-button:not(.collapsed) .faq-icon {
    transform: rotate(180deg);
    background: var(--primary);
}
.faq-item .accordion-button:not(.collapsed) .faq-icon i {
    color: #fff;
}
.faq-item .accordion-body {
    font-size: 15px;
    line-height: 1.75;
    color: var(--text-secondary);
    padding: 0 0 18px;
}
.faq-item:nth-child(odd) .accordion-button {
    background: transparent;
}

/* ===== CTA ===== */
.cta-section {
    margin-bottom: 40px;
}
.cta-card {
    background: var(--gradient-brand);
    border-radius: var(--radius-lg);
    padding: 48px;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 28px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 44px rgba(13, 46, 40, 0.16);
}
.cta-card::before {
    content: '';
    position: absolute;
    bottom: -80px;
    right: -60px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
    pointer-events: none;
}
.cta-card h2 {
    font-size: 28px;
    color: #fff;
    margin-bottom: 12px;
    font-weight: 800;
}
.cta-card p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.8);
    max-width: 460px;
    margin-bottom: 0;
}
.cta-right {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}
.qr-placeholder {
    width: 96px;
    height: 96px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    color: var(--text-secondary);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}
@media (max-width: 767.98px) {
    .cta-card {
        padding: 32px 24px;
        flex-direction: column;
        align-items: flex-start;
    }
    .cta-right {
        width: 100%;
        justify-content: center;
    }
}

/* ===== 页脚 ===== */
.site-footer {
    background: var(--dark-green);
    color: rgba(255, 255, 255, 0.65);
    padding: 56px 0 0;
    margin-top: 32px;
}
.footer-inner {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 40px 32px;
}
@media (max-width: 991.98px) {
    .footer-inner {
        padding: 0 24px 28px;
    }
}
.footer-brand .brand-logo-side {
    margin-bottom: 14px;
}
.footer-brand .brand-logo-side .brand-main {
    font-size: 22px;
}
.footer-brand .brand-description {
    font-size: 14px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.5);
    max-width: 260px;
}
.footer-col-title {
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
    letter-spacing: 0.04em;
}
.footer-cols {
    padding-bottom: 36px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-link-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-link-list li {
    margin-bottom: 10px;
}
.footer-link-list a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.55);
    transition: color 0.2s, padding-left 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.footer-link-list a:hover {
    color: var(--accent);
    padding-left: 4px;
}
.footer-contact p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.55);
    margin-bottom: 10px;
}
.footer-contact i {
    width: 20px;
    color: var(--primary-light);
    margin-right: 4px;
}
.footer-copyright {
    padding: 20px 0 20px;
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.38);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    margin-top: 32px;
}
@media (max-width: 767.98px) {
    .footer-brand .brand-description {
        max-width: none;
    }
}

/* roulang page: article */
:root {
            --primary: #0D6A5B;
            --primary-light: #249F8D;
            --primary-dark: #0B4E46;
            --dark-bg: #0A2B28;
            --accent: #E77A34;
            --accent-light: #F1A95E;
            --bg: #F6F4EE;
            --surface: #FFFFFF;
            --text: #1D2B2A;
            --text-secondary: #5E6E6C;
            --border: #E6E2D8;
            --border-divider: #E4E3DC;
            --brand-gradient: linear-gradient(135deg, #0B4E46 0%, #148B79 45%, #2BB6A0 100%);
            --accent-gradient: linear-gradient(135deg, #E77A34 0%, #F1A95E 100%);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-pill: 999px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(13, 46, 40, 0.06);
            --shadow-md: 0 14px 30px rgba(13, 46, 40, 0.12);
            --shadow-lg: 0 20px 44px rgba(13, 46, 40, 0.16);
            --section-gap: clamp(48px, 6vw, 88px);
            --sidebar-width: 248px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            font-size: 16px;
            line-height: 1.6;
            background: var(--bg);
            color: var(--text);
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .25s ease;
        }

        a:hover {
            color: var(--primary-light);
        }

        img {
            max-width: 100%;
            height: auto;
            vertical-align: middle;
        }

        button,
        input,
        textarea {
            font-family: inherit;
        }

        /* ---------- Sidebar ---------- */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: var(--sidebar-width);
            background: var(--dark-bg);
            display: flex;
            flex-direction: column;
            padding: 24px 20px;
            z-index: 1040;
            overflow-y: auto;
        }

        .sidebar-brand {
            padding: 0 4px 28px;
            border-bottom: 1px rgba(255, 255, 255, 0.1);
            margin-bottom: 22px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
        }

        .brand-main {
            font-size: 26px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.02em;
            line-height: 1.1;
        }

        .brand-badge {
            font-size: 12px;
            font-weight: 700;
            background: var(--accent-gradient);
            color: #fff;
            padding: 4px 10px;
            border-radius: var(--radius-pill);
            letter-spacing: 0.04em;
            white-space: nowrap;
            line-height: 1.2;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }

        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 11px 16px;
            border-radius: 14px;
            color: rgba(255, 255, 255, 0.72);
            font-size: 15px;
            font-weight: 500;
            text-decoration: none;
            transition: background .25s ease, color .25s ease;
            position: relative;
        }

        .sidebar-nav .nav-item i {
            width: 18px;
            text-align: center;
            font-size: 15px;
        }

        .sidebar-nav .nav-item:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }

        .sidebar-nav .nav-item.active {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            font-weight: 600;
        }

        .sidebar-nav .nav-item.active::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 20px;
            border-radius: 0 4px 4px 0;
            background: var(--primary-light);
        }

        .sidebar-nav .nav-item:focus-visible {
            outline: 3px solid rgba(36, 159, 141, 0.6);
            outline-offset: 2px;
        }

        .sidebar-bottom {
            border-top: 1px rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            margin-top: 16px;
        }

        .sidebar-bottom .contact-line {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            line-height: 1.7;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-bottom .contact-line i {
            width: 14px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.35);
        }

        .sidebar-bottom .copyright-mini {
            color: rgba(255, 255, 255, 0.35);
            font-size: 12px;
            margin-top: 12px;
        }

        /* ---------- Main Layout ---------- */
        .main-content {
            margin-left: var(--sidebar-width);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .page-container {
            max-width: 1120px;
            width: 100%;
            margin: 0 auto;
            padding: 32px 40px 60px;
            flex: 1;
        }

        /* ---------- Mobile Header ---------- */
        .mobile-header {
            display: none;
            position: sticky;
            top: 0;
            z-index: 1030;
            height: 56px;
            background: var(--dark-bg);
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
        }

        .mobile-header .brand-main {
            font-size: 20px;
        }

        .mobile-header .brand-badge {
            font-size: 11px;
            padding: 3px 8px;
        }

        .mobile-toggle {
            background: transparent;
            border: none;
            color: #fff;
            font-size: 20px;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background .25s ease;
        }

        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .mobile-toggle:focus-visible {
            outline: 3px solid rgba(255, 255, 255, 0.4);
            outline-offset: 2px;
        }

        /* ---------- Drawer ---------- */
        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(10, 43, 40, 0.55);
            z-index: 1045;
            opacity: 0;
            visibility: hidden;
            transition: opacity .3s ease, visibility .3s ease;
            backdrop-filter: blur(3px);
        }

        .drawer-overlay.show {
            opacity: 1;
            visibility: visible;
        }

        .mobile-drawer {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: 280px;
            background: var(--dark-bg);
            z-index: 1050;
            padding: 24px 20px;
            transform: translateX(-100%);
            transition: transform .35s ease;
            overflow-y: auto;
            display: flex;
            flex-direction: column;
        }

        .mobile-drawer.open {
            transform: translateX(0);
        }

        .mobile-drawer .sidebar-brand {
            padding: 0 4px 28px;
        }

        .mobile-drawer .sidebar-nav {
            flex: 1;
        }

        .mobile-drawer .sidebar-bottom {
            border-top: 1px rgba(255, 255, 255, 0.1);
        }

        body.drawer-open {
            overflow: hidden;
        }

        /* ---------- Breadcrumb ---------- */
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 28px;
        }

        .breadcrumb-nav a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color .25s ease;
        }

        .breadcrumb-nav a:hover {
            color: var(--primary);
        }

        .breadcrumb-nav .sep {
            color: var(--border);
        }

        .breadcrumb-nav .current {
            color: var(--text);
            font-weight: 500;
            max-width: 300px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* ---------- Article Page ---------- */
        .article-page {
            max-width: 760px;
            margin: 0 auto;
        }

        .article-title {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text);
            margin: 0 0 22px;
            letter-spacing: 0.01em;
        }

        .article-meta-bar {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 18px;
            padding: 14px 0;
            border-top: 1px solid var(--border-divider);
            border-bottom: 1px solid var(--border-divider);
            margin-bottom: 28px;
        }

        .meta-tag {
            display: inline-block;
            background: rgba(13, 106, 91, 0.08);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: var(--radius-pill);
            letter-spacing: 0.02em;
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-secondary);
            font-size: 13px;
        }

        .meta-item i {
            font-size: 13px;
            color: var(--primary-light);
        }

        .article-cover {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 32px;
            box-shadow: var(--shadow-sm);
        }

        .article-cover img {
            width: 100%;
            height: auto;
            object-fit: cover;
            display: block;
        }

        /* ---------- Article Body ---------- */
        .article-body {
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
        }

        .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.4;
            margin: 40px 0 16px;
            padding-left: 14px;
            border-left: 4px solid var(--primary);
            letter-spacing: 0.01em;
        }

        .article-body h3 {
            font-size: 19px;
            font-weight: 700;
            line-height: 1.45;
            margin: 30px 0 12px;
            letter-spacing: 0.01em;
        }

        .article-body p {
            margin: 0 0 20px;
            color: var(--text);
            letter-spacing: 0.02em;
        }

        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: rgba(231, 122, 52, 0.06);
            padding: 16px 22px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 26px 0;
            color: var(--text-secondary);
            font-size: 15px;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 22px;
            padding-left: 24px;
        }

        .article-body ul li,
        .article-body ol li {
            margin-bottom: 10px;
            line-height: 1.7;
        }

        .article-body ul li::marker {
            color: var(--primary);
        }

        .article-body ol li::marker {
            color: var(--primary);
            font-weight: 600;
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            box-shadow: var(--shadow-sm);
        }

        .article-body strong {
            font-weight: 700;
            color: var(--text);
        }

        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body a:hover {
            color: var(--primary-light);
        }

        .article-body code {
            background: rgba(13, 106, 91, 0.08);
            color: var(--primary);
            font-size: 14px;
            padding: 2px 8px;
            border-radius: 6px;
            font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
        }

        .article-body pre {
            background: var(--dark-bg);
            color: #d7e0de;
            padding: 24px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 24px 0;
            font-size: 14px;
            line-height: 1.7;
        }

        .article-body pre code {
            background: transparent;
            color: inherit;
            padding: 0;
        }

        /* ---------- Article Not Found ---------- */
        .article-not-found {
            border: 2px dashed var(--border);
            border-radius: var(--radius-lg);
            padding: 56px 32px;
            text-align: center;
            background: var(--surface);
        }

        .article-not-found i {
            font-size: 42px;
            color: var(--primary-light);
            margin-bottom: 16px;
            display: inline-block;
        }

        .article-not-found p {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 12px;
        }

        .article-not-found .btn-back-home {
            display: inline-block;
            background: var(--brand-gradient);
            color: #fff;
            padding: 12px 32px;
            border-radius: var(--radius-pill);
            font-weight: 600;
            font-size: 15px;
            text-decoration: none;
            transition: transform .25s ease, box-shadow .25s ease;
            box-shadow: var(--shadow-sm);
        }

        .article-not-found .btn-back-home:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            color: #fff;
        }

        /* ---------- Related Section ---------- */
        .related-section {
            margin-top: 56px;
            border-top: 1px solid var(--border-divider);
            padding-top: 36px;
        }

        .related-title {
            font-size: 20px;
            font-weight: 700;
            margin: 0 0 24px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .related-title::before {
            content: "";
            width: 4px;
            height: 20px;
            background: var(--accent);
            border-radius: 4px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .related-card {
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            gap: 10px;
            text-decoration: none;
            transition: transform .3s ease, box-shadow .3s ease;
            border: 1px solid transparent;
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            text-decoration: none;
        }

        .related-card .related-tag {
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(13, 106, 91, 0.08);
            padding: 4px 10px;
            border-radius: var(--radius-pill);
            align-self: flex-start;
        }

        .related-card h4 {
            font-size: 15px;
            font-weight: 600;
            line-height: 1.5;
            margin: 0;
            color: var(--text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .related-date {
            font-size: 12px;
            color: var(--text-secondary);
        }

        .back-category {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 28px;
            font-size: 15px;
            font-weight: 500;
            color: var(--primary);
            text-decoration: none;
            transition: gap .25s ease;
        }

        .back-category:hover {
            gap: 14px;
            color: var(--primary-light);
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: var(--dark-bg);
            color: rgba(255, 255, 255, 0.7);
            margin-left: var(--sidebar-width);
            padding: 56px 40px 24px;
        }

        .footer-inner {
            max-width: 1120px;
            margin: 0 auto;
        }

        .footer-cols {
            margin-bottom: 36px;
        }

        .footer-brand .brand-logo-side {
            margin-bottom: 16px;
        }

        .footer-brand .brand-description {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
        }

        .footer-col-title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-link-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-link-list li {
            margin-bottom: 10px;
        }

        .footer-link-list a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: color .25s ease;
        }

        .footer-link-list a:hover {
            color: var(--accent);
        }

        .footer-link-list a i {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.3);
        }

        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-contact p {
            margin: 0;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-contact p i {
            width: 16px;
            color: var(--primary-light);
            text-align: center;
        }

        .footer-copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            font-size: 13px;
            text-align: center;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ---------- Responsive ---------- */
        @media (max-width: 1200px) {
            :root {
                --sidebar-width: 220px;
            }

            .page-container {
                padding: 28px 28px 56px;
            }

            .site-footer {
                padding: 48px 28px 20px;
            }
        }

        @media (max-width: 992px) {
            .sidebar {
                display: none;
            }

            .main-content {
                margin-left: 0;
            }

            .mobile-header {
                display: flex;
            }

            .site-footer {
                margin-left: 0;
            }

            .page-container {
                padding: 24px 20px 48px;
            }

            .related-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .article-title {
                font-size: 26px;
            }

            .article-meta-bar {
                gap: 10px 16px;
            }

            .article-page {
                padding: 0;
            }

            .breadcrumb-nav .current {
                max-width: 160px;
            }

            .site-footer {
                padding: 40px 20px 16px;
            }
        }

        @media (max-width: 576px) {
            .page-container {
                padding: 16px 16px 40px;
            }

            .article-title {
                font-size: 22px;
            }

            .article-body h2 {
                font-size: 20px;
            }

            .article-body h3 {
                font-size: 17px;
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .meta-item {
                font-size: 12px;
            }

            .meta-tag {
                font-size: 11px;
                padding: 4px 10px;
            }

            .site-footer {
                padding: 36px 16px 14px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0D6A5B;
            --primary-bright: #249F8D;
            --dark: #0A2B28;
            --accent: #E77A34;
            --bg: #F6F4EE;
            --surface: #FFFFFF;
            --text: #1D2B2A;
            --text-secondary: #5E6E6C;
            --border: #E6E2D8;
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(13, 46, 40, 0.06);
            --shadow-lg: 0 14px 30px rgba(13, 46, 40, 0.12);
            --gradient-brand: linear-gradient(135deg, #0B4E46 0%, #148B79 45%, #2BB6A0 100%);
            --gradient-accent: linear-gradient(135deg, #E77A34 0%, #F1A95E 100%);
            --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            -webkit-font-smoothing: antialiased;
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            font-size: 15px;
            letter-spacing: 0.02em;
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s ease;
        }

        a:hover {
            color: var(--primary-bright);
        }

        ul,
        ol {
            padding: 0;
        }

        .container-custom {
            max-width: 1120px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .sidebar-nav .nav-item,
        .mobile-drawer .nav-item {
            text-decoration: none;
        }

        /* ===== 左侧栏 ===== */
        .app-sidebar {
            width: 248px;
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            background: var(--dark);
            display: flex;
            flex-direction: column;
            z-index: 1040;
            padding: 0 16px;
            transition: transform 0.3s ease;
        }

        .sidebar-brand {
            padding: 24px 0 28px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: baseline;
            text-decoration: none !important;
        }

        .brand-main {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.02em;
        }

        .brand-badge {
            font-size: 11px;
            font-weight: 700;
            background: var(--gradient-accent);
            color: #fff;
            padding: 3px 10px;
            border-radius: 999px;
            margin-left: 8px;
            letter-spacing: 0.06em;
        }

        .sidebar-nav {
            flex: 1;
            padding: 8px 0;
        }

        .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 11px 16px;
            border-radius: 12px;
            color: rgba(255, 255, 255, 0.72);
            font-size: 15px;
            font-weight: 500;
            position: relative;
            transition: all 0.25s ease;
            margin-bottom: 4px;
        }

        .nav-item:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }

        .nav-item.active {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            font-weight: 600;
        }

        .nav-item.active::before {
            content: "";
            position: absolute;
            left: 0;
            top: 20%;
            bottom: 20%;
            width: 4px;
            background: var(--primary-bright);
            border-radius: 999px;
        }

        .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 15px;
            flex-shrink: 0;
        }

        .sidebar-contact {
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .contact-label {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.45);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 10px;
        }

        .sidebar-contact p {
            margin: 0 0 8px;
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
        }

        .sidebar-copy {
            padding: 14px 0 20px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.35);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        /* ===== 主内容 ===== */
        .main-wrap {
            margin-left: 248px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            background: var(--bg);
        }

        main {
            flex: 1;
            padding: 32px 0 0;
        }

        /* ===== 移动端顶部栏 ===== */
        .mobile-topbar {
            display: none;
        }

        @media (max-width: 992px) {
            .app-sidebar {
                transform: translateX(-100%);
            }

            .mobile-topbar {
                display: flex;
                position: sticky;
                top: 0;
                z-index: 1030;
                height: 56px;
                background: var(--dark);
                align-items: center;
                justify-content: space-between;
                padding: 0 16px;
            }

            .mobile-topbar .brand-main {
                font-size: 19px;
            }

            .menu-toggle {
                background: none;
                border: none;
                color: #fff;
                font-size: 20px;
                width: 44px;
                height: 44px;
                border-radius: 10px;
                display: flex;
                align-items: center;
                justify-content: center;
                cursor: pointer;
            }

            .menu-toggle:hover {
                background: rgba(255, 255, 255, 0.08);
            }

            .main-wrap {
                margin-left: 0;
            }
        }

        /* ===== 抽屉 ===== */
        .drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 1040;
        }

        .drawer-overlay.show {
            display: block;
        }

        .mobile-drawer {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: 280px;
            background: var(--dark);
            z-index: 1050;
            transform: translateX(-100%);
            transition: transform 0.3s ease;
            display: flex;
            flex-direction: column;
            padding: 20px 16px;
        }

        .mobile-drawer.show {
            transform: translateX(0);
        }

        .mobile-drawer .brand-logo {
            margin-bottom: 24px;
        }

        body.drawer-open {
            overflow: hidden;
        }

        /* ===== 按钮 ===== */
        .btn {
            border-radius: 999px;
            padding: 11px 28px;
            font-weight: 600;
            font-size: 15px;
            border: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            transition: all 0.3s ease;
        }

        .btn:focus {
            box-shadow: 0 0 0 3px rgba(36, 159, 141, 0.3);
        }

        .btn-brand {
            background: var(--primary);
            color: #fff;
        }

        .btn-brand:hover {
            background: var(--primary-bright);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(13, 106, 91, 0.18);
        }

        .btn-surface {
            background: #fff;
            color: var(--primary);
        }

        .btn-surface:hover {
            background: #f0faf8;
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
        }

        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.65);
            color: #fff;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: #fff;
            color: #fff;
        }

        .btn-light {
            background: #fff;
            color: var(--primary);
            padding: 14px 34px;
            font-weight: 700;
        }

        .btn-light:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.16);
            color: var(--primary);
        }

        /* ===== 面包屑 ===== */
        .page-head {
            padding: 24px 0 8px;
        }

        .breadcrumb-nav {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 20px;
        }

        .breadcrumb-nav a {
            color: var(--text-secondary);
            text-decoration: none;
        }

        .breadcrumb-nav a:hover {
            color: var(--primary);
        }

        .breadcrumb-nav span {
            margin: 0 8px;
            color: var(--border);
        }

        .page-head h1 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 14px;
            color: var(--text);
            letter-spacing: 0.01em;
        }

        .page-head .lead {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 660px;
            line-height: 1.7;
            margin: 0;
        }

        /* ===== 区块通用 ===== */
        .section-block {
            padding: clamp(48px, 6vw, 88px) 0;
        }

        .section-indent {
            padding: 0 0 clamp(48px, 6vw, 88px);
        }

        .eyebrow {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent);
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 28px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.01em;
            line-height: 1.3;
            margin: 0;
        }

        .section-head {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            gap: 24px;
            margin-bottom: 36px;
        }

        .section-head .link-more {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            text-decoration: none;
            white-space: nowrap;
        }

        .section-head .link-more i {
            margin-left: 4px;
            transition: transform 0.25s;
        }

        .section-head .link-more:hover i {
            transform: translateX(4px);
        }

        /* ===== 渠道图文 ===== */
        .channel-intro {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-sm);
            align-items: center;
            margin-top: 24px;
        }

        .intro-image {
            border-radius: 20px;
            overflow: hidden;
            height: 300px;
            box-shadow: var(--shadow-sm);
        }

        .intro-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .channel-intro:hover .intro-image img {
            transform: scale(1.03);
        }

        .intro-content {
            padding: 8px 8px 8px 12px;
        }

        .intro-content h2 {
            font-size: 26px;
            font-weight: 800;
            margin: 4px 0 16px;
            color: var(--text);
        }

        .intro-content>p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 20px;
        }

        .check-list {
            list-style: none;
            margin: 0 0 24px;
            padding: 0;
        }

        .check-list li {
            position: relative;
            padding-left: 30px;
            font-size: 15px;
            color: var(--text);
            margin-bottom: 12px;
            line-height: 1.6;
        }

        .check-list li::before {
            content: "\f00c";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 1px;
            width: 20px;
            height: 20px;
            background: rgba(13, 106, 91, 0.1);
            border-radius: 50%;
            font-size: 10px;
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* ===== 合作机制深色区 ===== */
        .mechanism-section {
            background: var(--dark);
            border-radius: var(--radius-lg);
            padding: 48px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .mechanism-section::before {
            content: "";
            position: absolute;
            right: -160px;
            top: -160px;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(36, 159, 141, 0.18) 0%, transparent 70%);
        }

        .mechanism-section .section-title {
            color: #fff;
        }

        .mechanism-section .eyebrow {
            color: var(--accent);
        }

        .mechanism-list {
            position: relative;
            z-index: 1;
        }

        .mechanism-item {
            display: flex;
            gap: 20px;
            padding: 24px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background 0.25s;
        }

        .mechanism-item:last-child {
            border-bottom: none;
        }

        .mechanism-item:hover {
            background: rgba(255, 255, 255, 0.02);
        }

        .mech-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #7FD4C3;
            flex-shrink: 0;
        }

        .mechanism-item h3 {
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            margin: 2px 0 8px;
        }

        .mechanism-item p {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
            max-width: 640px;
        }

        /* ===== 时间轴 ===== */
        .timeline {
            position: relative;
            padding-left: 56px;
            margin-top: 28px;
        }

        .timeline::before {
            content: "";
            position: absolute;
            left: 14px;
            top: 10px;
            bottom: 10px;
            width: 1px;
            background: linear-gradient(to bottom, var(--primary), var(--accent), transparent);
        }

        .timeline-item {
            position: relative;
            padding-bottom: 40px;
        }

        .timeline-item:last-child {
            padding-bottom: 0;
        }

        .timeline-dot {
            position: absolute;
            left: -56px;
            top: 4px;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--gradient-brand);
            border: 3px solid var(--bg);
            box-shadow: 0 0 0 1px var(--primary-bright);
        }

        .timeline-num {
            font-size: 13px;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 0.08em;
        }

        .timeline-item h3 {
            font-size: 20px;
            font-weight: 700;
            margin: 8px 0 8px;
            color: var(--text);
        }

        .timeline-item p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 560px;
            margin: 0;
        }

        /* ===== 指标条 ===== */
        .metrics-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            align-items: center;
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 28px 16px;
            margin: 0;
        }

        .metric-item {
            text-align: center;
            padding: 8px 16px;
            border-right: 1px solid var(--border);
        }

        .metric-item:last-child {
            border-right: none;
        }

        .metric-num {
            font-size: 30px;
            font-weight: 800;
            color: var(--primary);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }

        .metric-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 8px;
            font-weight: 500;
        }

        /* ===== FAQ ===== */
        .custom-accordion {
            margin-top: 12px;
        }

        .custom-accordion .accordion-item {
            background: transparent;
            border: none;
            border-bottom: 1px solid var(--border);
        }

        .custom-accordion .accordion-item:first-of-type {
            border-top: 1px solid var(--border);
        }

        .custom-accordion .accordion-button {
            background: transparent;
            box-shadow: none;
            border: none;
            padding: 22px 16px 22px 0;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            font-family: var(--font);
            letter-spacing: 0.01em;
            border-radius: 0 !important;
            transition: color 0.25s, background 0.25s;
        }

        .custom-accordion .accordion-button::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' viewBox='0 0 16 16' stroke='%235E6E6C' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 6l5 5 5-5'/%3E%3C/svg%3E");
            background-position: center;
            background-repeat: no-repeat;
            background-size: 16px;
            transition: transform 0.3s;
        }

        .custom-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
        }

        .custom-accordion .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: transparent;
        }

        .custom-accordion .accordion-button:focus {
            box-shadow: inset 0 0 0 3px rgba(36, 159, 141, 0.25);
            border-radius: 8px !important;
        }

        .custom-accordion .accordion-button:hover {
            background: rgba(13, 106, 91, 0.04);
        }

        .custom-accordion .accordion-body {
            padding: 0 20px 22px 0;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* ===== CTA ===== */
        .cta-card {
            background: var(--gradient-brand);
            border-radius: var(--radius-lg);
            padding: 52px 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 36px;
            position: relative;
            overflow: hidden;
            box-shadow: 0 20px 44px rgba(13, 46, 40, 0.16);
        }

        .cta-card::before {
            content: "";
            position: absolute;
            right: -140px;
            top: -140px;
            width: 340px;
            height: 340px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
        }

        .cta-card::after {
            content: "";
            position: absolute;
            left: -80px;
            bottom: -120px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(231, 122, 52, 0.18) 0%, transparent 70%);
        }

        .cta-text {
            position: relative;
            z-index: 1;
        }

        .cta-text h2 {
            color: #fff;
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: 0.01em;
        }

        .cta-text p {
            color: rgba(255, 255, 255, 0.82);
            font-size: 15px;
            line-height: 1.7;
            max-width: 460px;
            margin: 0;
        }

        .cta-actions {
            display: flex;
            align-items: center;
            gap: 24px;
            position: relative;
            z-index: 1;
            flex-shrink: 0;
        }

        .qr-placeholder {
            width: 96px;
            height: 96px;
            background: rgba(255, 255, 255, 0.95);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--text-secondary);
            text-align: center;
            padding: 8px;
            line-height: 1.5;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--dark);
            color: #fff;
            padding: 56px 0 0;
            margin-top: clamp(48px, 6vw, 88px);
        }

        .footer-inner {
            max-width: 1120px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .footer-cols {
            margin-bottom: 36px;
        }

        .footer-brand .brand-logo {
            margin-bottom: 16px;
        }

        .brand-description {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            line-height: 1.8;
            margin: 0;
            max-width: 340px;
        }

        .footer-col-title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
            padding-bottom: 10px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-link-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-link-list li {
            margin-bottom: 12px;
        }

        .footer-link-list a {
            color: rgba(255, 255, 255, 0.68);
            font-size: 14px;
            text-decoration: none;
            transition: color 0.25s;
        }

        .footer-link-list a i {
            font-size: 10px;
            margin-right: 6px;
            color: var(--primary-bright);
        }

        .footer-link-list a:hover {
            color: var(--accent);
        }

        .footer-contact p {
            color: rgba(255, 255, 255, 0.68);
            font-size: 14px;
            margin-bottom: 12px;
        }

        .footer-contact p i {
            width: 20px;
            color: var(--primary-bright);
            margin-right: 4px;
        }

        .footer-copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
            text-align: center;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1200px) {
            .app-sidebar {
                width: 220px;
            }

            .main-wrap {
                margin-left: 220px;
            }

            .container-custom {
                padding-left: 20px;
                padding-right: 20px;
            }
        }

        @media (max-width: 992px) {
            .app-sidebar {
                transform: translateX(-100%);
            }

            .main-wrap {
                margin-left: 0;
            }

            main {
                padding-top: 16px;
            }

            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }

            .metrics-bar {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px 0;
            }

            .metric-item:nth-child(2) {
                border-right: none;
            }

            .metric-item:nth-child(n + 3) {
                border-top: 1px solid var(--border);
            }

            .cta-card {
                flex-direction: column;
                align-items: flex-start;
                padding: 40px 28px;
            }

            .cta-actions {
                width: 100%;
                flex-wrap: wrap;
            }
        }

        @media (max-width: 768px) {
            .page-head h1 {
                font-size: 28px;
            }

            .page-head .lead {
                font-size: 15px;
            }

            .section-title {
                font-size: 24px;
            }

            .channel-intro {
                padding: 20px;
            }

            .intro-image {
                height: 220px;
            }

            .mechanism-section {
                padding: 32px 24px;
            }

            .timeline {
                padding-left: 48px;
            }

            .timeline-dot {
                left: -48px;
                width: 24px;
                height: 24px;
            }

            .timeline::before {
                left: 12px;
            }

            .cta-card {
                padding: 36px 24px;
            }

            .cta-text h2 {
                font-size: 24px;
            }
        }

        @media (max-width: 576px) {
            .container-custom {
                padding-left: 14px;
                padding-right: 14px;
            }

            .btn {
                width: 100%;
            }

            .cta-actions .btn {
                width: auto;
                flex: 1;
            }

            .qr-placeholder {
                width: 84px;
                height: 84px;
                flex-shrink: 0;
            }

            .metrics-bar {
                grid-template-columns: 1fr 1fr;
                padding: 20px 8px;
            }

            .metric-num {
                font-size: 24px;
            }
        }

/* roulang page: category2 */
/* ============ 设计变量 ============ */
        :root {
            --primary: #0D6A5B;
            --primary-bright: #249F8D;
            --deep-green: #0A2B28;
            --accent: #E77A34;
            --accent-light: #F1A95E;
            --bg: #F6F4EE;
            --surface: #FFFFFF;
            --text: #1D2B2A;
            --text-secondary: #5E6E6C;
            --border: #E6E2D8;
            --divider: #E4E3DC;
            --brand-gradient: linear-gradient(135deg, #0B4E46 0%, #148B79 45%, #2BB6A0 100%);
            --accent-gradient: linear-gradient(135deg, #E77A34 0%, #F1A95E 100%);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(13, 46, 40, 0.06);
            --shadow-hover: 0 14px 30px rgba(13, 46, 40, 0.12);
            --shadow-hero: 0 20px 44px rgba(13, 46, 40, 0.16);
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }

        /* ============ 基础 Reset ============ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            background: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.6;
            letter-spacing: 0.02em;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        textarea {
            font-family: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        /* ============ 主内容布局 ============ */
        .main-wrapper {
            min-height: 100vh;
            background: var(--bg);
        }

        .main-content {
            margin-left: 248px;
            padding: 0 32px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .container-custom {
            max-width: 1120px;
            margin: 0 auto;
            width: 100%;
        }

        .section-block {
            padding: 72px 0;
        }

        .section-block+.section-block {
            padding-top: 0;
        }

        /* ============ 左侧 App Shell ============ */
        .sidebar {
            position: fixed;
            left: 0;
            top: 0;
            bottom: 0;
            width: 248px;
            background: var(--deep-green);
            z-index: 1040;
            display: flex;
            flex-direction: column;
            padding: 24px 16px 20px;
            transition: transform 0.35s ease;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            line-height: 1;
        }

        .brand-main {
            color: #fff;
            font-size: 26px;
            font-weight: 700;
            letter-spacing: 0.06em;
        }

        .brand-badge {
            background: var(--accent-gradient);
            color: #fff;
            font-size: 11px;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 999px;
            letter-spacing: 0.08em;
            display: inline-block;
        }

        .sidebar-logo-wrap {
            padding: 8px 8px 28px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            margin-bottom: 20px;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }

        .nav-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 11px 16px;
            border-radius: 12px;
            color: rgba(255, 255, 255, 0.72);
            font-size: 15px;
            font-weight: 500;
            position: relative;
            transition: all 0.25s ease;
        }

        .nav-item i {
            font-size: 17px;
            width: 20px;
            text-align: center;
        }

        .nav-item:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            transform: translateX(2px);
        }

        .nav-item.active {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            font-weight: 600;
        }

        .nav-item.active::before {
            content: "";
            position: absolute;
            left: -16px;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 24px;
            border-radius: 0 4px 4px 0;
            background: var(--primary-bright);
        }

        .sidebar-contact {
            padding: 16px 8px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.8;
        }

        .sidebar-contact i {
            width: 18px;
            margin-right: 6px;
            color: rgba(255, 255, 255, 0.45);
        }

        .sidebar-copy {
            margin-top: 12px;
            font-size: 11px;
            color: rgba(255, 255, 255, 0.3);
            letter-spacing: 0.04em;
        }

        /* ============ 移动端顶部栏 / 抽屉 ============ */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--deep-green);
            z-index: 1050;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }

        .mobile-brand {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .mobile-brand .brand-main {
            font-size: 20px;
        }

        .mobile-brand .brand-badge {
            font-size: 10px;
            padding: 3px 8px;
        }

        .hamburger-btn {
            background: none;
            border: none;
            color: #fff;
            font-size: 22px;
            cursor: pointer;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background 0.2s ease;
        }

        .hamburger-btn:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(10, 43, 40, 0.55);
            z-index: 1055;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease;
        }

        .drawer-overlay.show {
            opacity: 1;
            visibility: visible;
        }

        .drawer {
            position: fixed;
            left: 0;
            top: 0;
            bottom: 0;
            width: 280px;
            background: var(--deep-green);
            z-index: 1060;
            transform: translateX(-100%);
            transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
            padding: 24px 20px 20px;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
        }

        .drawer.open {
            transform: translateX(0);
        }

        body.drawer-open {
            overflow: hidden;
        }

        .drawer .sidebar-nav {
            margin-top: 28px;
        }

        .drawer .nav-item.active::before {
            left: -20px;
        }

        .drawer-contact {
            margin-top: auto;
            padding-top: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.8;
        }

        /* ============ Page Hero（品牌介绍） ============ */
        .page-hero {
            border-radius: var(--radius-lg);
            margin-top: 32px;
            padding: 64px 48px;
            background: linear-gradient(100deg, rgba(10, 43, 40, 0.92) 0%, rgba(11, 78, 70, 0.78) 55%, rgba(20, 139, 121, 0.55) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-hero);
            color: #fff;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            right: -120px;
            top: -120px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
        }

        .page-hero .eyebrow {
            display: inline-block;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(6px);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 18px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .page-hero h1 {
            font-size: 42px;
            font-weight: 700;
            letter-spacing: 0.02em;
            line-height: 1.2;
            margin-bottom: 16px;
        }

        .page-hero p.lead {
            font-size: 17px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.82);
            max-width: 560px;
            margin-bottom: 0;
        }

        .page-hero .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 28px;
        }

        .page-hero .hero-meta .mini-badge {
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(4px);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
            border: 1px solid rgba(255, 255, 255, 0.14);
        }

        /* ============ 品牌概览图文块 ============ */
        .brand-overview {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .overview-media {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            height: 360px;
        }

        .overview-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .overview-media:hover img {
            transform: scale(1.03);
        }

        .overview-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(200deg, rgba(13, 106, 91, 0.08) 0%, rgba(13, 106, 91, 0.02) 100%);
        }

        .overview-content .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(13, 106, 91, 0.08);
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }

        .overview-content .section-tag::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
        }

        .overview-content h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: 0.01em;
            color: var(--text);
            margin-bottom: 18px;
        }

        .overview-content p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }

        .overview-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }

        .overview-tags .tag-pill {
            background: var(--surface);
            border: 1px solid var(--border);
            padding: 7px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text);
            box-shadow: var(--shadow-sm);
        }

        /* ============ 数据指标区 ============ */
        .brand-stats {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 48px 40px;
            border-top: 4px solid var(--primary);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stat-item {
            text-align: center;
            padding: 16px 12px;
            background: var(--bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            transition: all 0.3s ease;
        }

        .stat-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--primary-bright);
        }

        .stat-number {
            font-size: 32px;
            font-weight: 800;
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
            font-family: "SF Pro Display", -apple-system, BlinkMacSystemFont, sans-serif;
            font-variant-numeric: tabular-nums;
        }

        .stat-label {
            display: block;
            margin-top: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            letter-spacing: 0.04em;
        }

        /* ============ 发展历程时间线 ============ */
        .timeline-section {
            position: relative;
        }

        .timeline-section .section-header {
            text-align: center;
            margin-bottom: 52px;
        }

        .section-header .section-tag {
            display: inline-block;
            background: rgba(13, 106, 91, 0.08);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 999px;
            margin-bottom: 14px;
            letter-spacing: 0.06em;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: 0.01em;
            color: var(--text);
            line-height: 1.3;
        }

        .section-header .sub {
            margin-top: 10px;
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .timeline {
            position: relative;
            max-width: 760px;
            margin: 0 auto;
            padding-left: 44px;
        }

        .timeline::before {
            content: "";
            position: absolute;
            left: 16px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, var(--primary-bright), rgba(37, 159, 141, 0.2));
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            margin-bottom: 40px;
        }

        .timeline-item:last-child {
            margin-bottom: 0;
        }

        .timeline-item::before {
            content: "";
            position: absolute;
            left: -40px;
            top: 6px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--surface);
            border: 4px solid var(--primary);
            box-shadow: 0 0 0 4px rgba(13, 106, 91, 0.15);
        }

        .timeline-item:nth-child(2)::before {
            border-color: var(--primary-bright);
            box-shadow: 0 0 0 4px rgba(36, 159, 141, 0.18);
        }

        .timeline-item:nth-child(3)::before {
            border-color: var(--accent);
            box-shadow: 0 0 0 4px rgba(231, 122, 52, 0.15);
        }

        .timeline-item:nth-child(4)::before {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(13, 106, 91, 0.15);
        }

        .timeline-card {
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: 22px 28px;
            box-shadow: var(--shadow-sm);
            border-left: 3px solid var(--primary);
            transition: all 0.3s ease;
        }

        .timeline-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateX(4px);
        }

        .timeline-period {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            background: var(--accent-gradient);
            color: #fff;
            padding: 3px 14px;
            border-radius: 999px;
            letter-spacing: 0.06em;
            margin-bottom: 10px;
        }

        .timeline-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text);
        }

        .timeline-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ============ 核心价值 图文交替 ============ */
        .value-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            margin-bottom: 64px;
        }

        .value-row:last-child {
            margin-bottom: 0;
        }

        .value-row.reverse .value-media {
            order: 2;
        }

        .value-row.reverse .value-content {
            order: 1;
        }

        .value-media {
            border-radius: 20px;
            overflow: hidden;
            height: 300px;
            box-shadow: var(--shadow-hover);
            position: relative;
        }

        .value-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .value-media:hover img {
            transform: scale(1.05);
        }

        .value-media .media-badge {
            position: absolute;
            left: 16px;
            bottom: 16px;
            background: rgba(10, 43, 40, 0.82);
            backdrop-filter: blur(8px);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 8px 18px;
            border-radius: 999px;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .value-media .media-badge i {
            color: var(--accent-light);
        }

        .value-content h3 {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 14px;
            color: var(--text);
        }

        .value-content p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }

        .value-content .value-list {
            margin-top: 8px;
        }

        .value-content .value-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text);
            margin-bottom: 10px;
            line-height: 1.6;
        }

        .value-content .value-list li i {
            color: var(--primary);
            margin-top: 3px;
            font-size: 14px;
            flex-shrink: 0;
        }

        /* ============ CTA 区块 ============ */
        .cta-block {
            background: var(--brand-gradient);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-hero);
        }

        .cta-block::before {
            content: "";
            position: absolute;
            right: -60px;
            top: -60px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-block::after {
            content: "";
            position: absolute;
            left: -80px;
            bottom: -80px;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .cta-text h2 {
            font-size: 28px;
            font-weight: 700;
            letter-spacing: 0.01em;
            margin-bottom: 10px;
        }

        .cta-text p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            max-width: 460px;
        }

        .cta-actions {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .btn-gradient {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            font-size: 15px;
            padding: 14px 32px;
            border-radius: 999px;
            border: none;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .btn-gradient:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 30px rgba(0, 0, 0, 0.22);
            color: var(--primary);
        }

        .btn-outline-white {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.6);
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border-color: #fff;
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--deep-green);
            color: rgba(255, 255, 255, 0.7);
            margin-top: auto;
            padding: 56px 0 0;
        }

        .footer-inner {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 40px 24px;
        }

        .footer-brand {
            padding-right: 20px;
        }

        .footer-brand .brand-logo {
            margin-bottom: 16px;
        }

        .brand-description {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            margin-top: 10px;
        }

        .footer-col-title {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.05em;
        }

        .footer-link-list li {
            margin-bottom: 10px;
        }

        .footer-link-list a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            transition: all 0.25s ease;
        }

        .footer-link-list a i {
            font-size: 11px;
            margin-right: 6px;
            color: rgba(255, 255, 255, 0.35);
        }

        .footer-link-list a:hover {
            color: var(--accent-light);
            padding-left: 2px;
        }

        .footer-contact p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 12px;
            display: flex;
            align-items: flex-start;
            gap: 8px;
            line-height: 1.6;
        }

        .footer-contact p i {
            color: rgba(255, 255, 255, 0.42);
            margin-top: 3px;
            width: 16px;
            text-align: center;
        }

        .footer-copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            margin-top: 40px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            letter-spacing: 0.03em;
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1200px) {
            .sidebar {
                width: 220px;
            }

            .main-content {
                margin-left: 220px;
                padding: 0 24px;
            }
        }

        @media (max-width: 992px) {
            .sidebar {
                display: none;
            }

            .main-content {
                margin-left: 0;
                padding: 0 20px;
                padding-top: 76px;
            }

            .mobile-topbar {
                display: flex;
            }

            .brand-overview {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .overview-media {
                height: 300px;
            }

            .value-row {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .value-row.reverse .value-media {
                order: 1;
            }

            .value-row.reverse .value-content {
                order: 2;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .page-hero {
                padding: 48px 28px;
                margin-top: 16px;
            }

            .page-hero h1 {
                font-size: 34px;
            }

            .cta-block {
                padding: 40px 28px;
            }

            .footer-inner {
                padding-left: 28px;
                padding-right: 28px;
            }
        }

        @media (max-width: 768px) {
            .main-content {
                padding: 0 16px;
                padding-top: 72px;
            }

            .section-block {
                padding: 48px 0;
            }

            .page-hero {
                border-radius: 20px;
                padding: 40px 24px;
            }

            .page-hero h1 {
                font-size: 30px;
            }

            .page-hero p.lead {
                font-size: 15px;
            }

            .overview-content h2 {
                font-size: 26px;
            }

            .section-header h2 {
                font-size: 26px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }

            .stat-number {
                font-size: 26px;
            }

            .timeline {
                padding-left: 36px;
            }

            .timeline::before {
                left: 12px;
            }

            .timeline-item::before {
                left: -34px;
                width: 14px;
                height: 14px;
            }

            .timeline-card {
                padding: 18px 20px;
            }

            .value-media {
                height: 220px;
                border-radius: 16px;
            }

            .value-content h3 {
                font-size: 22px;
            }

            .cta-inner {
                flex-direction: column;
                align-items: flex-start;
            }

            .cta-text h2 {
                font-size: 24px;
            }

            .cta-actions {
                width: 100%;
            }

            .cta-actions .btn-gradient,
            .cta-actions .btn-outline-white {
                width: 100%;
                justify-content: center;
            }

            .footer-inner {
                padding: 0 20px 20px;
            }
        }

        @media (max-width: 576px) {
            .main-content {
                padding: 0 14px;
                padding-top: 68px;
            }

            .page-hero {
                padding: 32px 20px;
                border-radius: 18px;
            }

            .page-hero .hero-meta {
                flex-direction: column;
                align-items: flex-start;
            }

            .brand-overview {
                gap: 24px;
            }

            .overview-media {
                height: 220px;
            }

            .stats-grid {
                grid-template-columns: 1fr;
            }

            .brand-stats {
                padding: 28px 16px;
                border-radius: 18px;
            }

            .timeline-card h3 {
                font-size: 16px;
            }

            .timeline-card p {
                font-size: 13px;
            }

            .cta-block {
                padding: 32px 20px;
                border-radius: 18px;
            }

            .cta-actions {
                flex-direction: column;
                gap: 12px;
            }

            .btn-gradient,
            .btn-outline-white {
                padding: 13px 24px;
            }

            .brand-description {
                font-size: 13px;
            }

            .footer-copyright {
                font-size: 12px;
                line-height: 1.6;
            }
        }

        /* ============ 焦点可见性 ============ */
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid var(--primary-bright);
            outline-offset: 2px;
            border-radius: 6px;
        }

        .nav-item:focus-visible {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
        }

/* roulang page: category3 */
:root {
            --primary: #0D6A5B;
            --primary-light: #249F8D;
            --dark: #0A2B28;
            --accent: #E77A34;
            --accent-light: #F1A95E;
            --bg: #F6F4EE;
            --surface: #FFFFFF;
            --text: #1D2B2A;
            --text-secondary: #5E6E6C;
            --border: #E6E2D8;
            --divider: #E4E3DC;
            --gradient: linear-gradient(135deg, #0B4E46 0%, #148B79 45%, #2BB6A0 100%);
            --gradient-accent: linear-gradient(135deg, #E77A34 0%, #F1A95E 100%);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 8px;
            --shadow-card: 0 2px 8px rgba(13, 46, 40, 0.06);
            --shadow-hover: 0 14px 30px rgba(13, 46, 40, 0.12);
            --shadow-hero: 0 20px 44px rgba(13, 46, 40, 0.16);
            --sidebar-width: 248px;
            --transition: all 0.3s ease;
            --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font);
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.6;
            font-size: 15px;
            letter-spacing: 0.02em;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-sm);
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        button {
            font-family: var(--font);
            cursor: pointer;
        }

        .container-custom {
            max-width: 1120px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== 左侧栏 ===== */
        .app-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: var(--sidebar-width);
            background-color: var(--dark);
            z-index: 1040;
            display: flex;
            flex-direction: column;
            padding: 24px 16px 20px;
        }

        .app-sidebar .sidebar-inner {
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .brand-logo-side {
            padding: 0 8px 28px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border-radius: 12px;
            padding: 4px 8px;
            transition: var(--transition);
        }

        .brand-logo:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        .brand-main {
            font-size: 24px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.02em;
            line-height: 1.2;
        }

        .brand-badge {
            background: var(--gradient-accent);
            color: #fff;
            font-size: 11px;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 999px;
            letter-spacing: 0.08em;
            line-height: 1.4;
            white-space: nowrap;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 2px;
            flex: 1;
        }

        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 11px 16px;
            border-radius: 12px;
            color: rgba(255, 255, 255, 0.72);
            font-size: 14px;
            font-weight: 500;
            position: relative;
            transition: var(--transition);
        }

        .sidebar-nav .nav-item i {
            width: 18px;
            text-align: center;
            font-size: 15px;
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
        }

        .sidebar-nav .nav-item:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }

        .sidebar-nav .nav-item:hover i {
            color: rgba(255, 255, 255, 0.9);
        }

        .sidebar-nav .nav-item.active {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
        }

        .sidebar-nav .nav-item.active i {
            color: var(--accent-light);
        }

        .sidebar-nav .nav-item.active::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 22px;
            background: var(--primary-light);
            border-radius: 0 6px 6px 0;
        }

        .sidebar-contact {
            padding: 16px 0 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 8px;
        }

        .contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
            padding: 6px 12px;
        }

        .contact-item i {
            width: 16px;
            color: var(--accent-light);
            font-size: 13px;
        }

        .sidebar-copyright {
            color: rgba(255, 255, 255, 0.4);
            font-size: 11px;
            padding: 0 12px;
            letter-spacing: 0.03em;
        }

        /* ===== 移动端顶部栏 ===== */
        .mobile-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--dark);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            z-index: 1050;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
        }

        .mobile-header .brand-logo {
            padding: 0;
        }

        .menu-toggle {
            background: rgba(255, 255, 255, 0.1);
            border: none;
            color: #fff;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.2);
        }

        .menu-toggle:focus {
            outline: 3px solid rgba(255, 255, 255, 0.3);
            outline-offset: 2px;
        }

        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(10, 43, 40, 0.6);
            backdrop-filter: blur(3px);
            z-index: 1055;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
        }

        .drawer-overlay.open {
            opacity: 1;
            visibility: visible;
        }

        .drawer-menu {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: 280px;
            background: var(--dark);
            z-index: 1060;
            transform: translateX(-100%);
            transition: transform 0.32s ease;
            padding: 24px 16px 20px;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
        }

        .drawer-menu.open {
            transform: translateX(0);
        }

        .drawer-menu .sidebar-nav {
            margin-top: 24px;
        }

        .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .drawer-close {
            background: rgba(255, 255, 255, 0.08);
            border: none;
            color: rgba(255, 255, 255, 0.8);
            width: 34px;
            height: 34px;
            border-radius: 10px;
            font-size: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .drawer-close:hover {
            background: rgba(255, 255, 255, 0.16);
            color: #fff;
        }

        body.menu-open {
            overflow: hidden;
        }

        /* ===== 主内容区 ===== */
        .main-content {
            margin-left: var(--sidebar-width);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .content-wrap {
            flex: 1;
            padding: 40px 32px 0;
        }

        /* ===== 按钮 ===== */
        .btn-brand {
            background: var(--surface);
            color: var(--primary);
            border: none;
            border-radius: 999px;
            padding: 12px 28px;
            font-weight: 700;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12);
            transition: var(--transition);
        }

        .btn-brand:hover {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 8px 22px rgba(0, 0, 0, 0.18);
            transform: translateY(-2px);
        }

        .btn-brand:focus {
            outline: 3px solid rgba(255, 255, 255, 0.6);
            outline-offset: 2px;
        }

        .btn-outline-ghost {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.45);
            color: #fff;
            border-radius: 999px;
            padding: 12px 28px;
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }

        .btn-outline-ghost:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.8);
            color: #fff;
        }

        .btn-outline-ghost:focus {
            outline: 3px solid rgba(255, 255, 255, 0.35);
            outline-offset: 2px;
        }

        .btn-dark-brand {
            background: var(--gradient);
            color: #fff;
            border: none;
            border-radius: 999px;
            padding: 14px 34px;
            font-weight: 700;
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 8px 20px rgba(13, 106, 91, 0.25);
            transition: var(--transition);
        }

        .btn-dark-brand:hover {
            box-shadow: 0 12px 28px rgba(13, 106, 91, 0.35);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-light-brand {
            background: #fff;
            color: var(--primary);
            border: none;
            border-radius: 999px;
            padding: 14px 34px;
            font-weight: 700;
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
            transition: var(--transition);
        }

        .btn-light-brand:hover {
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.18);
            transform: translateY(-2px);
            color: var(--primary);
        }

        .btn-light-brand:focus,
        .btn-dark-brand:focus {
            outline: 3px solid rgba(13, 106, 91, 0.25);
            outline-offset: 2px;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-nav {
            margin-bottom: 28px;
        }

        .breadcrumb-nav ol {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 13px;
            color: var(--text-secondary);
        }

        .breadcrumb-nav li {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .breadcrumb-nav li::after {
            content: "/";
            color: #c5c0b4;
            font-size: 12px;
        }

        .breadcrumb-nav li:last-child::after {
            display: none;
        }

        .breadcrumb-nav a {
            color: var(--primary);
            font-weight: 500;
        }

        .breadcrumb-nav a:hover {
            color: var(--primary-light);
        }

        /* ===== Hero ===== */
        .faq-hero {
            background: var(--gradient);
            border-radius: var(--radius-lg);
            padding: 48px 48px 44px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-hero);
        }

        .faq-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 78% 30%, rgba(255, 255, 255, 0.12) 0%, transparent 60%),
                radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
            pointer-events: none;
        }

        .faq-hero .hero-content {
            position: relative;
            z-index: 1;
        }

        .eyebrow-hero {
            display: inline-block;
            background: rgba(255, 255, 255, 0.14);
            color: rgba(255, 255, 255, 0.85);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            padding: 5px 14px;
            border-radius: 999px;
            margin-bottom: 18px;
        }

        .faq-hero h1 {
            font-size: 40px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
            line-height: 1.25;
        }

        .faq-hero .hero-desc {
            color: rgba(255, 255, 255, 0.82);
            font-size: 15px;
            line-height: 1.7;
            max-width: 520px;
            margin-bottom: 24px;
        }

        .hero-ctas {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .faq-hero .hero-img-wrap {
            border-radius: 20px;
            overflow: hidden;
            height: 260px;
            position: relative;
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.22);
        }

        .faq-hero .hero-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .faq-hero .hero-img-wrap::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 78, 70, 0.2) 0%, transparent 100%);
            border-radius: 20px;
        }

        /* ===== 区块通用 ===== */
        .section-block {
            padding-top: clamp(48px, 6vw, 72px);
        }

        .section-head {
            margin-bottom: 28px;
        }

        .section-tag {
            display: inline-block;
            background: rgba(13, 106, 91, 0.08);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
            letter-spacing: 0.06em;
            margin-bottom: 10px;
        }

        .section-head h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--text);
            margin: 0;
            letter-spacing: 0.01em;
            line-height: 1.4;
        }

        .section-head p {
            color: var(--text-secondary);
            font-size: 14px;
            margin-top: 8px;
            margin-bottom: 0;
        }

        /* ===== FAQ标签索引 ===== */
        .faq-index-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 32px;
        }

        .filter-tag {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }

        .filter-tag:hover {
            border-color: var(--primary-light);
            color: var(--primary);
        }

        .filter-tag.active {
            background: var(--gradient);
            border-color: transparent;
            color: #fff;
            box-shadow: 0 8px 20px rgba(13, 106, 91, 0.25);
        }

        .filter-tag:focus {
            outline: 3px solid rgba(13, 106, 91, 0.25);
            outline-offset: 2px;
        }

        /* ===== FAQ手风琴 ===== */
        .faq-panel {
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            box-shadow: var(--shadow-card);
        }

        .faq-group-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--primary);
            padding: 12px 0 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .faq-group-title i {
            font-size: 14px;
            color: var(--accent);
        }

        .faq-accordion .accordion-item {
            border: none;
            border-radius: 0;
            background: transparent;
        }

        .faq-accordion .accordion-item {
            border-bottom: 1px solid var(--divider);
        }

        .faq-accordion .accordion-item:first-of-type {
            border-top: 1px solid var(--divider);
        }

        .faq-accordion .accordion-button {
            background: transparent;
            border: none;
            box-shadow: none;
            padding: 20px 46px 20px 0;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 14px;
            position: relative;
            text-align: left;
            border-radius: 0;
            transition: var(--transition);
        }

        .faq-accordion .accordion-button::before {
            content: "";
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--gradient);
            flex-shrink: 0;
            margin-right: 14px;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: transparent;
            box-shadow: none;
        }

        .faq-accordion .accordion-button:not(.collapsed)::before {
            box-shadow: 0 0 0 4px rgba(13, 106, 91, 0.12);
        }

        .faq-accordion .accordion-button::after {
            background-image: none;
            width: 16px;
            height: 16px;
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 13px;
            color: var(--text-secondary);
            position: absolute;
            right: 4px;
            transform: rotate(0deg);
            transition: var(--transition);
        }

        .faq-accordion .accordion-button:not(.collapsed)::after {
            background-image: none;
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-accordion .accordion-button:hover {
            background: rgba(13, 106, 91, 0.04);
        }

        .faq-accordion .accordion-button:focus {
            outline: none;
            box-shadow: inset 0 0 0 3px rgba(13, 106, 91, 0.2);
            border-radius: 8px;
        }

        .faq-accordion .accordion-body {
            padding: 0 16px 20px 22px;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.75;
        }

        /* ===== 指标条 ===== */
        .metric-strip {
            border-top: 1px solid var(--divider);
            border-bottom: 1px solid var(--divider);
            padding: 32px 0;
            margin-top: clamp(48px, 6vw, 72px);
        }

        .metric-strip .metric-item {
            text-align: center;
            padding: 8px 12px;
        }

        .metric-strip .metric-num {
            font-size: 30px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.3;
            letter-spacing: -0.02em;
            font-variant-numeric: tabular-nums;
            position: relative;
            display: inline-block;
        }

        .metric-strip .metric-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 4px;
            font-weight: 500;
        }

        .metric-strip .metric-item + .metric-item::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 1px;
            height: 36px;
            background: var(--divider);
        }

        .metric-strip .metric-item {
            position: relative;
        }

        /* ===== 支持服务卡 ===== */
        .support-cards {
            padding-top: clamp(48px, 6vw, 72px);
        }

        .support-card {
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-card);
            height: 100%;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .support-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: transparent;
        }

        .support-card .support-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: var(--gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            margin-bottom: 18px;
            box-shadow: 0 6px 16px rgba(13, 106, 91, 0.2);
        }

        .support-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }

        .support-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .support-card .support-meta {
            margin-top: 16px;
            padding-top: 14px;
            border-top: 1px dashed var(--divider);
            font-size: 13px;
            color: var(--primary);
            font-weight: 600;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding-top: clamp(48px, 6vw, 80px);
            padding-bottom: 20px;
        }

        .cta-card {
            background: var(--gradient);
            border-radius: var(--radius-lg);
            padding: 48px 56px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-hero);
        }

        .cta-card::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 88% 20%, rgba(255, 255, 255, 0.14) 0%, transparent 55%);
            pointer-events: none;
        }

        .cta-card .cta-content {
            position: relative;
            z-index: 1;
        }

        .cta-card h2 {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }

        .cta-card p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 24px;
            max-width: 540px;
        }

        .cta-card .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }

        .cta-qr {
            width: 84px;
            height: 84px;
            background: #fff;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
            margin-left: auto;
            color: var(--text-secondary);
            font-size: 11px;
            text-align: center;
            padding: 8px;
            line-height: 1.4;
        }

        .cta-qr i {
            font-size: 20px;
            color: var(--primary);
            margin-bottom: 4px;
            display: block;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.72);
            margin-top: clamp(48px, 6vw, 80px);
            padding: 56px 32px 0;
        }

        .footer-inner {
            max-width: 1120px;
            margin: 0 auto;
        }

        .footer-brand .brand-logo-side {
            padding: 0 0 14px;
        }

        .brand-description {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            margin: 0;
            max-width: 320px;
        }

        .footer-col-title {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.04em;
        }

        .footer-link-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-link-list li {
            margin-bottom: 10px;
        }

        .footer-link-list a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }

        .footer-link-list a i {
            font-size: 11px;
            color: var(--accent-light);
            opacity: 0.7;
        }

        .footer-link-list a:hover {
            color: var(--accent-light);
        }

        .footer-contact p {
            margin-bottom: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }

        .footer-contact p i {
            color: var(--accent-light);
            font-size: 13px;
            margin-top: 3px;
        }

        .footer-copyright {
            padding: 22px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
            text-align: center;
            letter-spacing: 0.03em;
            margin-top: 32px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1200px) {
            :root {
                --sidebar-width: 220px;
            }

            .faq-hero {
                padding: 36px 32px;
            }
        }

        @media (max-width: 992px) {
            .app-sidebar {
                display: none;
            }

            .main-content {
                margin-left: 0;
            }

            .content-wrap {
                padding: 72px 20px 0;
            }

            .faq-hero {
                padding: 32px 24px;
            }

            .faq-hero h1 {
                font-size: 32px;
            }

            .faq-hero .hero-img-wrap {
                height: 220px;
            }

            .metric-strip .metric-item + .metric-item::before {
                display: none;
            }

            .metric-strip .metric-item {
                margin-bottom: 12px;
            }

            .cta-card {
                padding: 36px 28px;
            }

            .cta-qr {
                margin-left: 0;
            }

            .site-footer {
                padding: 40px 20px 0;
            }
        }

        @media (max-width: 768px) {
            .content-wrap {
                padding: 64px 16px 0;
            }

            .faq-hero h1 {
                font-size: 28px;
            }

            .faq-hero .hero-desc {
                font-size: 14px;
            }

            .hero-ctas .btn-brand,
            .hero-ctas .btn-outline-ghost {
                width: 100%;
                justify-content: center;
            }

            .faq-panel {
                padding: 20px;
            }

            .support-card {
                padding: 22px;
            }

            .cta-card h2 {
                font-size: 24px;
            }

            .cta-card p {
                font-size: 14px;
            }

            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .cta-actions .btn-light-brand,
            .cta-actions .btn-outline-ghost {
                width: 100%;
                justify-content: center;
            }

            .cta-qr {
                align-self: center;
                margin-top: 8px;
            }

            .metric-strip {
                padding: 24px 0;
            }

            .metric-strip .metric-num {
                font-size: 26px;
            }
        }

        @media (max-width: 576px) {
            .content-wrap {
                padding: 60px 12px 0;
            }

            .faq-hero {
                padding: 24px 20px;
                border-radius: 18px;
            }

            .faq-hero .hero-img-wrap {
                height: 180px;
                margin-top: 12px;
            }

            .faq-accordion .accordion-button {
                font-size: 14px;
                padding: 16px 40px 16px 0;
            }

            .faq-accordion .accordion-body {
                padding-left: 0;
                font-size: 13px;
            }

            .section-head h2 {
                font-size: 24px;
            }

            .filter-tag {
                padding: 8px 16px;
                font-size: 13px;
            }

            .footer-inner {
                padding: 0 4px;
            }
        }

        @media (min-width: 993px) {
            .mobile-header {
                display: none;
            }

            .drawer-overlay,
            .drawer-menu {
                display: none;
            }
        }

/* roulang page: category4 */
:root {
    --primary: #0D6A5B;
    --primary-light: #249F8D;
    --primary-dark: #0B4E46;
    --dark-bg: #0A2B28;
    --accent: #E77A34;
    --accent-light: #F1A95E;
    --bg: #F6F4EE;
    --surface: #FFFFFF;
    --text: #1D2B2A;
    --text-secondary: #5E6E6C;
    --border: #E6E2D8;
    --divider: #E4E3DC;
    --brand-gradient: linear-gradient(135deg, #0B4E46 0%, #148B79 45%, #2BB6A0 100%);
    --accent-gradient: linear-gradient(135deg, #E77A34 0%, #F1A95E 100%);
    --radius-lg: 24px;
    --radius: 16px;
    --radius-sm: 8px;
    --shadow-sm: 0 2px 8px rgba(13, 46, 40, 0.06);
    --shadow-lg: 0 14px 30px rgba(13, 46, 40, 0.12);
    --transition: all 0.3s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 16px;
    line-height: 1.6;
    letter-spacing: 0.02em;
    overflow-x: hidden;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; height: auto; }
button { border: none; background: none; font-family: inherit; cursor: pointer; }
.container-custom { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.brand-logo { display: inline-flex; align-items: center; gap: 8px; }
.brand-main { font-size: 22px; font-weight: 800; color: #fff; letter-spacing: 0.02em; line-height: 1.1; }
.brand-badge {
    background: var(--accent-gradient);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 999px;
    letter-spacing: 0.06em;
}
.sidebar-nav a { display: flex; align-items: center; gap: 12px; padding: 11px 16px; border-radius: 12px; color: rgba(255,255,255,0.72); font-size: 14px; font-weight: 500; transition: var(--transition); }
.sidebar-nav a i { width: 18px; text-align: center; font-size: 14px; }
.sidebar-nav a:hover { background: rgba(255,255,255,0.08); color: #fff; }
.sidebar-nav a.active { background: rgba(255,255,255,0.12); color: #fff; box-shadow: inset 3px 0 0 var(--primary-light); }

/* ========== 左侧栏 ========== */
.site-sidebar {
    position: fixed;
    top: 0; left: 0;
    width: 248px;
    height: 100vh;
    background: var(--dark-bg);
    padding: 28px 16px 20px;
    display: flex;
    flex-direction: column;
    z-index: 1040;
    transition: transform 0.3s ease;
}
.sidebar-brand { padding: 0 8px; margin-bottom: 36px; }
.sidebar-nav { flex: 1; display: flex; flex-direction: column; gap: 4px; }
.sidebar-contact { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 16px; font-size: 13px; color: rgba(255,255,255,0.6); line-height: 1.7; }
.sidebar-contact p { margin-bottom: 2px; }
.sidebar-copyright { font-size: 11px; color: rgba(255,255,255,0.35); margin-top: 12px; padding-top: 10px; border-top: 1px solid rgba(255,255,255,0.06); }

/* ========== 移动顶部栏 ========== */
.mobile-header {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    height: 56px;
    background: var(--dark-bg);
    padding: 0 16px;
    align-items: center;
    justify-content: space-between;
    z-index: 1050;
}
.mobile-header .brand-main { font-size: 18px; }
.drawer-toggle { color: #fff; font-size: 20px; width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; border-radius: 10px; }
.drawer-toggle:hover { background: rgba(255,255,255,0.1); }
.drawer-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(10,43,40,0.45);
    backdrop-filter: blur(2px);
    z-index: 1055;
    opacity: 0;
    transition: opacity 0.3s ease;
}
.drawer-overlay.show { opacity: 1; }
.mobile-drawer {
    position: fixed;
    top: 0; left: 0;
    width: 280px;
    height: 100vh;
    background: var(--dark-bg);
    z-index: 1060;
    padding: 20px 16px;
    transform: translateX(-105%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
}
.mobile-drawer.show { transform: translateX(0); }
.drawer-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 28px; padding: 0 4px; }
.drawer-close { color: rgba(255,255,255,0.7); font-size: 20px; width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; border-radius: 8px; }
.drawer-close:hover { background: rgba(255,255,255,0.1); color: #fff; }
.drawer-contact { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 16px; font-size: 13px; color: rgba(255,255,255,0.6); }
body.menu-open { overflow: hidden; }

/* ========== 主内容 ========== */
.main-content {
    margin-left: 248px;
    min-height: 100vh;
    padding: 40px 32px 0;
}
.main-content .container-custom { max-width: 1120px; }

/* ========== 按钮 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 15px;
    padding: 12px 28px;
    transition: var(--transition);
    border: 2px solid transparent;
    line-height: 1.4;
}
.btn-primary {
    background: var(--brand-gradient);
    color: #fff;
    box-shadow: 0 4px 14px rgba(13, 106, 91, 0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(13, 106, 91, 0.35); color: #fff; }
.btn-white { background: #fff; color: var(--primary); }
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(0,0,0,0.15); color: var(--primary); }
.btn-outline-white {
    background: transparent;
    color: #fff;
    border-color: rgba(255,255,255,0.4);
}
.btn-outline-white:hover { background: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.7); color: #fff; }
.btn-lg { padding: 16px 36px; font-size: 16px; }

/* ========== 标签与徽章 ========== */
.tag {
    display: inline-block;
    padding: 5px 14px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    background: rgba(13, 106, 91, 0.08);
    color: var(--primary);
    letter-spacing: 0.02em;
}
.tag-accent {
    background: rgba(231, 122, 52, 0.12);
    color: var(--accent);
}

/* ========== 页头 Hero ========== */
.page-hero {
    position: relative;
    border-radius: var(--radius-lg);
    background: var(--brand-gradient);
    padding: 48px;
    overflow: hidden;
    color: #fff;
    box-shadow: 0 20px 44px rgba(13, 46, 40, 0.16);
}
.page-hero::before {
    content: "";
    position: absolute;
    top: -60px; right: -60px;
    width: 260px; height: 260px;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    border-radius: 50%;
}
.page-hero::after {
    content: "";
    position: absolute;
    bottom: -80px; left: 30%;
    width: 320px; height: 320px;
    background: radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 70%);
    border-radius: 50%;
}
.breadcrumb-nav { position: relative; z-index: 2; display: flex; align-items: center; gap: 8px; font-size: 13px; color: rgba(255,255,255,0.7); margin-bottom: 28px; }
.breadcrumb-nav a { color: rgba(255,255,255,0.85); }
.breadcrumb-nav a:hover { color: #fff; text-decoration: underline; }
.breadcrumb-nav i { font-size: 10px; opacity: 0.6; }
.page-hero-content { position: relative; z-index: 2; }
.page-hero-eyebrow {
    display: inline-block;
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.75);
    background: rgba(255,255,255,0.12);
    padding: 6px 16px;
    border-radius: 999px;
    margin-bottom: 16px;
    font-weight: 600;
}
.page-hero h1 { font-size: 38px; font-weight: 800; color: #fff; margin-bottom: 16px; line-height: 1.25; }
.page-hero p { font-size: 16px; line-height: 1.7; color: rgba(255,255,255,0.82); max-width: 560px; margin-bottom: 28px; }
.page-hero .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.page-hero-image {
    position: relative;
    z-index: 2;
    border-radius: 20px;
    overflow: hidden;
    height: 280px;
    box-shadow: 0 12px 30px rgba(0,0,0,0.2);
}
.page-hero-image img { width: 100%; height: 100%; object-fit: cover; }
.page-hero-image::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(11,78,70,0.3), transparent 40%);
}

/* ========== 板块标题 ========== */
.section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 32px;
    gap: 24px;
    flex-wrap: wrap;
}
.section-mark {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 0.06em;
    background: rgba(231,122,52,0.1);
    padding: 5px 12px;
    border-radius: 999px;
    margin-bottom: 10px;
}
.section-head h2 { font-size: 28px; font-weight: 700; color: var(--text); line-height: 1.3; margin: 0; }
.section-head p { font-size: 14px; color: var(--text-secondary); margin-bottom: 0; }
.section-link { font-size: 14px; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 6px; }
.section-link:hover { color: var(--primary-light); }
.section-link i { transition: transform 0.3s ease; }
.section-link:hover i { transform: translateX(4px); }

/* ========== 活动列表 ========== */
.event-section { padding: 64px 0 8px; }
.event-list { display: flex; flex-direction: column; gap: 16px; }
.event-row {
    display: grid;
    grid-template-columns: 80px 1fr auto;
    gap: 20px;
    align-items: center;
    background: var(--surface);
    border-radius: var(--radius);
    padding: 22px 24px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid transparent;
}
.event-row:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
    border-color: rgba(13,106,91,0.08);
}
.event-date {
    width: 72px;
    height: 84px;
    border-radius: 14px;
    background: var(--brand-gradient);
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(13, 106, 91, 0.2);
}
.event-day { font-size: 26px; font-weight: 800; line-height: 1.1; }
.event-month { font-size: 11px; opacity: 0.85; letter-spacing: 0.06em; margin-top: 2px; }
.event-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 4px; color: var(--text); }
.event-body p { font-size: 14px; color: var(--text-secondary); margin: 0; line-height: 1.6; }
.event-meta { display: flex; align-items: center; gap: 14px; }
.event-status {
    display: inline-flex;
    align-items: center;
    padding: 5px 14px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
}
.status-open { background: rgba(13,106,91,0.1); color: var(--primary); }
.status-soon { background: rgba(231,122,52,0.12); color: var(--accent); }
.status-prepare { background: rgba(94,110,108,0.1); color: var(--text-secondary); }
.status-closed { background: rgba(94,110,108,0.06); color: #8A9896; }
.event-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(13,106,91,0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 14px;
    transition: var(--transition);
    flex-shrink: 0;
}
.event-row:hover .event-link { background: var(--primary); color: #fff; transform: translateX(4px); }

/* ========== 资源内容卡片 ========== */
.resource-section { padding: 64px 0 8px; }
.resource-card {
    background: var(--surface);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}
.resource-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.resource-card-img { height: 190px; overflow: hidden; position: relative; }
.resource-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.resource-card:hover .resource-card-img img { transform: scale(1.04); }
.resource-card-img::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(10,43,40,0.12), transparent 50%);
}
.resource-card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.resource-card-body .tag { margin-bottom: 12px; align-self: flex-start; }
.resource-card-body h3 { font-size: 19px; font-weight: 700; margin-bottom: 8px; color: var(--text); }
.resource-card-body p { font-size: 14px; color: var(--text-secondary); line-height: 1.65; margin-bottom: 16px; flex: 1; }
.arrow-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
}
.arrow-link i { transition: transform 0.3s ease; }
.arrow-link:hover { color: var(--primary-light); }
.arrow-link:hover i { transform: translateX(4px); }

/* ========== 参与流程 ========== */
.process-section { padding: 64px 0 8px; }
.process-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    position: relative;
}
.process-steps::before {
    content: "";
    position: absolute;
    top: 44px;
    left: 15%;
    right: 15%;
    border-top: 1px dashed rgba(13,106,91,0.35);
}
.process-step { text-align: center; padding: 0 12px; position: relative; }
.step-number {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--brand-gradient);
    color: #fff;
    font-size: 18px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    box-shadow: 0 6px 18px rgba(13,106,91,0.3);
    position: relative;
    z-index: 2;
}
.process-step h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; color: var(--text); }
.process-step p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 0; }

/* ========== FAQ ========== */
.faq-section { padding: 64px 0 8px; }
.faq-list { max-width: 780px; }
.faq-item { border-bottom: 1px solid var(--divider); }
.faq-item:first-child { border-top: 1px solid var(--divider); }
.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 22px 4px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    text-align: left;
    background: transparent;
    transition: background 0.3s ease;
    border-radius: 8px;
}
.faq-question:hover { background: rgba(13,106,91,0.03); }
.faq-question i {
    font-size: 14px;
    color: var(--text-secondary);
    transition: transform 0.4s ease;
    flex-shrink: 0;
}
.faq-item.open .faq-question i { transform: rotate(180deg); color: var(--primary); }
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.75;
    padding: 0 4px;
}
.faq-answer-inner { padding-bottom: 22px; }

/* ========== CTA ========== */
.cta-section { padding: 64px 0 80px; }
.cta-box {
    background: var(--brand-gradient);
    border-radius: var(--radius-lg);
    padding: 48px 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap;
    color: #fff;
    box-shadow: 0 20px 44px rgba(13, 46, 40, 0.16);
    position: relative;
    overflow: hidden;
}
.cta-box::before {
    content: "";
    position: absolute;
    top: -80px; right: -80px;
    width: 260px; height: 260px;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    border-radius: 50%;
}
.cta-box h2 { font-size: 28px; font-weight: 700; margin-bottom: 8px; position: relative; z-index: 2; }
.cta-box p { font-size: 15px; color: rgba(255,255,255,0.85); margin-bottom: 0; position: relative; z-index: 2; }
.cta-actions { display: flex; align-items: center; gap: 24px; position: relative; z-index: 2; flex-wrap: wrap; }
.qr-placeholder {
    width: 84px;
    height: 84px;
    background: #fff;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 30px;
    box-shadow: 0 4px 14px rgba(0,0,0,0.1);
}

/* ========== 页脚 ========== */
.site-footer {
    background: var(--dark-bg);
    margin-left: 248px;
    padding: 56px 32px 24px;
    color: rgba(255,255,255,0.7);
}
.footer-inner { max-width: 1120px; margin: 0 auto; }
.footer-cols { margin-bottom: 32px; }
.footer-brand .brand-logo { margin-bottom: 14px; }
.brand-description { font-size: 14px; line-height: 1.7; color: rgba(255,255,255,0.55); margin: 14px 0 0; }
.footer-col-title { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 16px; letter-spacing: 0.02em; }
.footer-link-list { list-style: none; padding: 0; margin: 0; }
.footer-link-list li { margin-bottom: 10px; }
.footer-link-list a { font-size: 14px; color: rgba(255,255,255,0.6); display: inline-flex; align-items: center; gap: 6px; }
.footer-link-list a i { font-size: 10px; color: rgba(255,255,255,0.3); transition: var(--transition); }
.footer-link-list a:hover { color: var(--accent-light); }
.footer-link-list a:hover i { color: var(--accent-light); transform: translateX(3px); }
.footer-contact p { font-size: 14px; margin-bottom: 10px; display: flex; align-items: center; gap: 8px; color: rgba(255,255,255,0.6); }
.footer-contact i { width: 18px; text-align: center; color: rgba(255,255,255,0.3); }
.footer-copyright {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,0.4);
}

/* ========== 响应式 ========== */
@media (max-width: 1200px) {
    .site-sidebar { width: 220px; }
    .main-content { margin-left: 220px; padding: 32px 24px 0; }
    .site-footer { margin-left: 220px; padding: 48px 24px 20px; }
    .page-hero { padding: 40px; }
    .page-hero h1 { font-size: 34px; }
    .cta-box { padding: 40px 44px; }
}
@media (max-width: 1100px) {
    .page-hero-image { height: 240px; }
    .event-row { grid-template-columns: 72px 1fr; gap: 16px; }
    .event-meta { grid-column: 2; justify-content: flex-start; }
    .process-steps::before { display: none; }
}
@media (max-width: 992px) {
    .site-sidebar { display: none; }
    .mobile-header { display: flex; }
    .main-content { margin-left: 0; padding-top: 80px; }
    .site-footer { margin-left: 0; }
    .page-hero { border-radius: 20px; padding: 36px 28px; }
    .page-hero-image { height: 220px; margin-top: 12px; }
    .page-hero h1 { font-size: 32px; }
    .cta-box { padding: 36px 32px; }
    .drawer-overlay { display: block; pointer-events: none; }
    .drawer-overlay.show { pointer-events: auto; }
}
@media (max-width: 768px) {
    .main-content { padding: 72px 16px 0; }
    .page-hero { padding: 32px 20px; }
    .page-hero h1 { font-size: 28px; }
    .page-hero p { font-size: 15px; }
    .page-hero .hero-actions { flex-direction: column; }
    .page-hero .hero-actions .btn { width: 100%; }
    .page-hero-image { height: 180px; }
    .section-head { flex-direction: column; align-items: flex-start; gap: 8px; }
    .section-head h2 { font-size: 24px; }
    .event-row { grid-template-columns: 1fr; padding: 20px; }
    .event-date { width: 60px; height: 70px; }
    .event-day { font-size: 22px; }
    .event-meta { grid-column: 1; justify-content: space-between; align-items: center; margin-top: 4px; }
    .process-steps { grid-template-columns: 1fr; gap: 28px; }
    .process-step { text-align: left; display: flex; align-items: flex-start; gap: 16px; }
    .step-number { margin: 0; flex-shrink: 0; }
    .process-step h3 { margin-bottom: 4px; }
    .cta-box { flex-direction: column; text-align: center; padding: 32px 24px; }
    .cta-actions { justify-content: center; }
    .site-footer { padding: 40px 16px 20px; }
    .resource-card-img { height: 160px; }
    .footer-cols { row-gap: 24px; }
}
@media (max-width: 576px) {
    .main-content { padding: 64px 12px 0; }
    .page-hero { padding: 24px 16px; }
    .page-hero h1 { font-size: 26px; }
    .page-hero-image { height: 160px; }
    .brand-main { font-size: 18px; }
    .cta-actions { flex-direction: column; }
    .qr-placeholder { display: none; }
    .section-head h2 { font-size: 22px; }
}