/* roulang page: index */
:root {
    --primary: #2E86C1;
    --primary-light: #5DADE2;
    --accent: #F2735C;
    --dark: #1F3B4A;
    --bg: #F5F8FA;
    --white: #FFFFFF;
    --light-bg: #EAF2F7;
    --text-title: #212F3C;
    --text-body: #34495E;
    --text-muted: #7B8A9B;
    --border: #D6E1EA;
    --radius: 12px;
    --shadow: 0 2px 8px rgba(31,59,74,0.08);
    --shadow-hover: 0 12px 28px rgba(31,59,74,0.15);
    --shadow-cta: 0 4px 12px rgba(46,134,193,0.3);
    --radius-lg: 16px;
    --nav-height: 72px;
    --section-pad: 90px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, sans-serif;
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-body);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color .2s ease; }
a:hover { color: #216F9E; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, select, textarea { font-family: inherit; font-size: 15px; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.grid-container { max-width: 1200px; }
section { padding: var(--section-pad) 0; }
@media (max-width: 1023px) { :root { --section-pad: 60px; } }
@media (max-width: 767px) { :root { --section-pad: 48px; } }

/* ===== Header & Nav ===== */
.site-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,0.96);
    box-shadow: 0 1px 0 rgba(31,59,74,0.06), 0 4px 20px rgba(31,59,74,0.04);
    backdrop-filter: blur(8px);
    height: var(--nav-height);
    display: flex; align-items: center;
}
.site-header .grid-container { width: 100%; }
.logo {
    display: inline-flex; align-items: baseline;
    gap: 6px; line-height: 1.2;
}
.logo-main {
    font-size: 24px; font-weight: 800; color: var(--text-title);
    letter-spacing: -0.5px;
}
.logo-sub {
    font-size: 13px; font-weight: 500; color: var(--primary);
    background: rgba(46,134,193,0.1);
    padding: 2px 8px; border-radius: 20px;
}
.main-nav { display: flex; align-items: center; justify-content: flex-end; }
.main-nav .menu {
    display: flex; align-items: center; gap: 4px;
    margin: 0; padding: 0;
}
.main-nav .menu > li { position: relative; }
.main-nav .menu > li > a {
    display: inline-flex; align-items: center;
    padding: 10px 18px;
    font-size: 15px; font-weight: 500;
    color: var(--text-body);
    border-radius: 8px;
    transition: all .2s ease;
}
.main-nav .menu > li > a:hover {
    color: var(--primary);
    background: rgba(46,134,193,0.06);
}
.main-nav .menu > li.active > a {
    color: var(--primary);
    font-weight: 600;
    position: relative;
}
.main-nav .menu > li.active > a::after {
    content: '';
    position: absolute; bottom: 4px; left: 18px; right: 18px;
    height: 2px; border-radius: 2px;
    background: var(--primary);
}
.nav-cta {
    display: inline-flex; align-items: center;
    padding: 10px 22px;
    background: var(--primary);
    color: #fff!important;
    border-radius: 8px;
    font-weight: 600;
    font-size: 15px;
    box-shadow: var(--shadow-cta);
    transition: all .25s ease;
}
.nav-cta:hover {
    background: #216F9E;
    box-shadow: 0 6px 18px rgba(46,134,193,0.4);
    transform: translateY(-1px);
}
.nav-search {
    display: inline-flex; align-items: center;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 40px;
    padding: 6px 14px;
    margin-right: 12px;
    transition: all .2s ease;
}
.nav-search input {
    border: none; outline: none; background: transparent;
    font-size: 14px; width: 110px;
    color: var(--text-body);
}
.nav-search i { color: var(--text-muted); font-size: 14px; }
.nav-search:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(46,134,193,0.15);
}
.dropdown-trigger { position: relative; }
.dropdown-panel {
    display: none;
    position: absolute; top: calc(100% + 12px); right: -20px;
    width: 520px;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: 0 12px 32px rgba(31,59,74,0.14);
    border: 1px solid rgba(31,59,74,0.05);
    padding: 24px;
    z-index: 200;
}
.dropdown-trigger:hover .dropdown-panel,
.dropdown-trigger:focus-within .dropdown-panel { display: block; }
.dropdown-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.dropdown-title {
    font-size: 13px; font-weight: 700; color: var(--text-muted);
    text-transform: none; letter-spacing: .3px;
    margin-bottom: 12px;
}
.dropdown-links a {
    display: block; padding: 8px 12px;
    border-radius: 8px; color: var(--text-body);
    font-size: 14px;
}
.dropdown-links a:hover { background: var(--light-bg); color: var(--primary); }
.dropdown-card {
    background: var(--bg); border-radius: 8px;
    padding: 14px; margin-bottom: 8px;
}
.dropdown-card a { font-weight: 600; font-size: 14px; }
.dropdown-card p { font-size: 13px; color: var(--text-muted); margin: 4px 0 0; line-height: 1.5; }

/* Hamburger */
.hamburger {
    display: none;
    width: 42px; height: 42px;
    align-items: center; justify-content: center;
    border-radius: 8px;
    color: var(--text-title);
    font-size: 22px;
    transition: background .2s;
}
.hamburger:hover { background: var(--light-bg); }
.mobile-menu {
    display: none;
    position: fixed; top: var(--nav-height); bottom: 0; left: 0; right: 0;
    background: var(--white);
    z-index: 99;
    padding: 24px 20px;
    overflow-y: auto;
}
.mobile-menu.open { display: block; }
.mobile-menu a {
    display: block;
    padding: 14px 16px;
    font-size: 17px; font-weight: 500;
    color: var(--text-title);
    border-radius: 10px;
    border-bottom: 1px solid rgba(31,59,74,0.05);
    min-height: 44px;
}
.mobile-menu a:hover { background: var(--light-bg); }
.mobile-menu a.active { color: var(--primary); background: rgba(46,134,193,0.08); }
@media (max-width: 1023px) {
    .main-nav .menu { display: none; }
    .hamburger { display: inline-flex; }
}

/* ===== Hero ===== */
.hero {
    position: relative;
    background: linear-gradient(135deg, #E8F2F9 0%, #F5F8FA 100%);
    padding: 80px 0 100px;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute; top: -80px; right: -100px;
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(46,134,193,0.12) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.hero-bg {
    position: absolute; inset: 0;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    opacity: 0.08;
    pointer-events: none;
}
.hero .grid-container { position: relative; z-index: 2; }
.hero-title {
    font-size: 38px; font-weight: 700;
    color: var(--text-title);
    line-height: 1.3;
    letter-spacing: -0.5px;
    margin-bottom: 20px;
}
.hero-title .highlight { color: var(--primary); }
.hero-subtitle {
    font-size: 17px; color: var(--text-body);
    line-height: 1.8;
    max-width: 520px;
    margin-bottom: 32px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 13px 28px;
    font-size: 15px; font-weight: 600;
    border-radius: 8px;
    transition: all .25s ease;
    min-height: 46px;
}
.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: var(--shadow-cta);
}
.btn-primary:hover {
    background: #216F9E;
    color: #fff;
    box-shadow: 0 6px 18px rgba(46,134,193,0.4);
    transform: translateY(-2px);
}
.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1.5px solid var(--primary);
}
.btn-outline:hover {
    background: rgba(46,134,193,0.06);
    color: var(--primary);
    border-color: var(--primary-light);
    transform: translateY(-2px);
}
.hero-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-hover);
    border: 4px solid rgba(255,255,255,0.6);
}
.hero-image img { width: 100%; height: 320px; object-fit: cover; }
.hero-stats {
    margin-top: 56px;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 28px 24px;
}
.stat-block { text-align: center; padding: 8px 16px; }
.stat-number {
    font-size: 42px; font-weight: 800;
    color: var(--accent);
    font-variant-numeric: tabular-nums;
    line-height: 1.2;
    letter-spacing: -1px;
}
.stat-label {
    font-size: 14px; color: var(--text-muted);
    margin-top: 8px;
}
@media (max-width: 767px) {
    .hero-title { font-size: 30px; }
    .hero { padding: 48px 0 60px; }
    .hero-stats { margin-top: 32px; padding: 20px 12px; }
    .stat-number { font-size: 32px; }
}

/* ===== Section Titles ===== */
.section-header { text-align: center; margin-bottom: 48px; }
.section-tag {
    display: inline-block;
    font-size: 13px; font-weight: 600;
    color: var(--primary);
    background: rgba(46,134,193,0.08);
    padding: 4px 16px;
    border-radius: 20px;
    margin-bottom: 14px;
    letter-spacing: 0.5px;
}
.section-title {
    font-size: 28px; font-weight: 700;
    color: var(--text-title);
    line-height: 1.4;
    letter-spacing: -0.3px;
    margin-bottom: 16px;
}
.section-desc {
    font-size: 16px; color: var(--text-muted);
    max-width: 680px; margin: 0 auto;
    line-height: 1.8;
}
@media (max-width: 767px) {
    .section-title { font-size: 24px; }
    .section-desc { font-size: 15px; }
}

/* ===== Services ===== */
.services { background: var(--light-bg); }
.service-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 32px 28px;
    box-shadow: var(--shadow);
    transition: all .3s ease;
    height: 100%;
    border: 1px solid rgba(31,59,74,0.03);
}
.service-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}
.service-icon {
    width: 64px; height: 64px;
    border-radius: 12px;
    background: rgba(46,134,193,0.08);
    display: flex; align-items: center; justify-content: center;
    font-size: 26px; color: var(--primary);
    margin-bottom: 20px;
    transition: all .3s ease;
}
.service-card:hover .service-icon {
    background: var(--primary);
    color: #fff;
    transform: scale(1.05);
}
.service-card h3 {
    font-size: 18px; font-weight: 600;
    color: var(--text-title);
    margin-bottom: 12px;
    line-height: 1.4;
}
.service-card p {
    font-size: 14px; color: var(--text-muted);
    line-height: 1.7;
}
.grid-margin-x > .cell { margin-bottom: 24px; }

/* ===== Comparison ===== */
.comparison {
    background: var(--white);
}
.comparison-band {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}
.comparison-left {
    background: #F5F7F9;
    padding: 40px 36px;
    border-right: 1px solid rgba(31,59,74,0.06);
    height: 100%;
}
.comparison-right {
    background: linear-gradient(145deg, #EAF2F7 0%, #F8FBFD 100%);
    padding: 40px 36px;
    height: 100%;
    border-left: 4px solid var(--primary);
}
.comparison-label {
    font-size: 14px; font-weight: 600;
    letter-spacing: .5px;
    margin-bottom: 8px;
}
.comparison-left .comparison-label { color: #5B7284; }
.comparison-right .comparison-label { color: var(--primary); }
.comparison-title {
    font-size: 24px; font-weight: 700;
    color: var(--text-title);
    margin-bottom: 8px;
}
.comparison-desc {
    font-size: 14px; color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 24px;
}
.comparison-list { margin-top: 16px; }
.comparison-list li {
    display: flex; justify-content: space-between; align-items: center;
    padding: 14px 0;
    border-bottom: 1px solid rgba(31,59,74,0.06);
    font-size: 15px;
}
.comparison-list li:last-child { border-bottom: none; }
.comparison-list .label { color: var(--text-body); }
.comparison-list .value { font-weight: 700; color: var(--text-title); }
.comparison-right .comparison-list .value { color: var(--accent); font-weight: 800; }
.comparison-arrow {
    position: absolute; left: 50%; top: 50%;
    transform: translate(-50%, -50%);
    width: 48px; height: 48px;
    background: var(--white);
    border-radius: 50%;
    box-shadow: 0 4px 16px rgba(31,59,74,0.15);
    display: flex; align-items: center; justify-content: center;
    font-size: 22px; color: var(--primary);
    z-index: 3;
}
@media (max-width: 767px) {
    .comparison-left, .comparison-right { padding: 28px 20px; }
    .comparison-left { border-right: none; border-bottom: 1px solid rgba(31,59,74,0.06); }
}

/* ===== News ===== */
.news { background: var(--bg); }
.news-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    transition: all .3s ease;
    height: 100%;
    display: flex; flex-direction: column;
    border: 1px solid rgba(31,59,74,0.04);
}
.news-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
}
.news-cover {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 18px;
    aspect-ratio: 16/9;
}
.news-cover img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform .4s ease;
}
.news-card:hover .news-cover img { transform: scale(1.04); }
.news-meta {
    display: flex; align-items: center; gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}
.tag {
    display: inline-block;
    font-size: 12px; font-weight: 500;
    padding: 3px 12px;
    background: rgba(46,134,193,0.08);
    color: var(--primary);
    border-radius: 20px;
}
.news-time {
    font-size: 13px; color: var(--text-muted);
}
.news-card h3 {
    font-size: 17px; font-weight: 600;
    color: var(--text-title);
    line-height: 1.5;
    margin-bottom: 10px;
}
.news-card h3 a { color: inherit; }
.news-card h3 a:hover { color: var(--primary); }
.news-card p {
    font-size: 14px; color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 16px;
    flex-grow: 1;
}
.news-link {
    font-size: 14px; font-weight: 600;
    color: var(--primary);
    display: inline-flex; align-items: center; gap: 6px;
}
.news-link:hover { gap: 10px; color: #216F9E; }
.news-empty {
    text-align: center; padding: 60px 20px;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    color: var(--text-muted);
    font-size: 16px;
}
.news-item {
    display: flex; gap: 16px; align-items: flex-start;
    padding: 16px 0;
    border-bottom: 1px solid rgba(31,59,74,0.06);
}
.news-item:last-child { border-bottom: none; }
.news-item-date {
    flex-shrink: 0;
    background: var(--light-bg);
    border-radius: 8px;
    padding: 8px 14px;
    text-align: center;
    min-width: 56px;
}
.news-item-date .day { font-size: 20px; font-weight: 700; color: var(--primary); line-height: 1.2; }
.news-item-date .month { font-size: 12px; color: var(--text-muted); }
.news-item-content h4 { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.news-item-content h4 a { color: var(--text-title); }
.news-item-content h4 a:hover { color: var(--primary); }
.news-item-content p { font-size: 13px; color: var(--text-muted); line-height: 1.5; margin: 0; }

/* ===== FAQ ===== */
.faq { background: var(--light-bg); }
.faq-list {
    max-width: 860px; margin: 0 auto;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 8px 0;
}
.faq-item {
    border-bottom: 1px solid #E5EDF3;
}
.faq-item:last-child { border-bottom: none; }
.faq-question {
    display: flex; justify-content: space-between; align-items: center;
    padding: 18px 24px;
    font-size: 16px; font-weight: 600;
    color: var(--text-title);
    cursor: pointer;
    transition: background .2s;
}
.faq-question:hover { background: rgba(46,134,193,0.04); }
.faq-question .icon {
    width: 28px; height: 28px;
    border-radius: 50%;
    background: rgba(46,134,193,0.08);
    color: var(--primary);
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 16px;
    transition: transform .3s ease;
    flex-shrink: 0;
}
.faq-item.active .faq-question .icon { transform: rotate(45deg); }
.faq-answer {
    max-height: 0; overflow: hidden;
    transition: max-height .35s ease;
}
.faq-item.active .faq-answer { max-height: 260px; }
.faq-answer p {
    padding: 0 24px 18px;
    font-size: 15px; line-height: 1.8;
    color: var(--text-body);
    background: transparent;
}
.faq-item.active .faq-answer p {
    padding: 0 24px 18px;
    background: var(--bg);
    border-radius: 0 0 8px 8px;
    margin: 0 8px 8px;
    padding: 16px 20px;
}
@media (max-width: 767px) {
    .faq-question { font-size: 15px; padding: 16px 18px; }
    .faq-answer p { font-size: 14px; }
}

/* ===== Contact CTA ===== */
.contact-cta { background: var(--white); }
.contact-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: 0 2px 12px rgba(31,59,74,0.06);
    padding: 40px;
}
.form-group { margin-bottom: 20px; }
.form-group label {
    display: block; font-size: 14px; font-weight: 600;
    color: var(--text-title); margin-bottom: 8px;
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    height: 46px;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0 16px;
    font-size: 15px;
    color: var(--text-body);
    background: var(--white);
    transition: all .2s ease;
    outline: none;
}
.form-group textarea {
    height: auto; min-height: 90px;
    padding: 12px 16px; resize: vertical;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(46,134,193,0.12);
}
.btn-submit {
    width: 100%; height: 48px;
    background: var(--primary);
    color: #fff;
    border-radius: 8px;
    font-size: 16px; font-weight: 600;
    box-shadow: var(--shadow-cta);
    transition: all .25s ease;
    border: none; cursor: pointer;
}
.btn-submit:hover {
    background: #216F9E;
    box-shadow: 0 6px 20px rgba(46,134,193,0.4);
    transform: translateY(-1px);
}
.info-side {
    background: var(--light-bg);
    border-radius: var(--radius);
    padding: 32px 28px;
    height: 100%;
}
.info-side h3 {
    font-size: 20px; font-weight: 700;
    color: var(--text-title);
    margin-bottom: 12px;
}
.info-side > p {
    font-size: 14px; color: var(--text-muted);
    margin-bottom: 24px;
    line-height: 1.7;
}
.info-list li {
    display: flex; align-items: flex-start; gap: 14px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(31,59,74,0.06);
}
.info-list li:last-child { border-bottom: none; }
.info-list i {
    width: 38px; height: 38px;
    background: var(--white);
    border-radius: 10px;
    color: var(--primary);
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
    box-shadow: 0 2px 6px rgba(31,59,74,0.06);
}
.info-list .info-text strong { display: block; font-size: 15px; color: var(--text-title); margin-bottom: 2px; }
.info-list .info-text span { font-size: 14px; color: var(--text-muted); line-height: 1.5; }
.qr-placeholder {
    width: 120px; height: 120px;
    background: var(--white);
    border-radius: var(--radius);
    border: 1px dashed var(--border);
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    color: var(--text-muted); font-size: 13px;
    gap: 6px;
    margin-top: 16px;
}
.qr-placeholder i { font-size: 28px; color: var(--text-muted); }
@media (max-width: 767px) {
    .contact-card { padding: 24px 20px; }
    .info-side { margin-top: 24px; }
}

/* ===== Footer ===== */
.site-footer {
    background: var(--dark);
    color: #CFDDE8;
    padding: 60px 0 0;
}
.footer-brand { padding: 20px 0; }
.footer-brand .logo-main { color: #fff; }
.footer-brand .logo-sub { background: rgba(255,255,255,0.1); color: #CFDDE8; }
.footer-brand > p {
    font-size: 14px; line-height: 1.8;
    color: #9FB4C3;
    margin-top: 16px;
    max-width: 320px;
}
.footer-links h4 {
    font-size: 16px; font-weight: 600;
    color: #fff;
    margin-bottom: 16px;
}
.footer-links ul li {
    padding: 6px 0;
}
.footer-links ul li a {
    color: #9FB4C3;
    font-size: 14px;
    transition: all .2s;
}
.footer-links ul li a:hover {
    color: #fff; padding-left: 4px;
}
.footer-contact h4 {
    font-size: 16px; font-weight: 600;
    color: #fff; margin-bottom: 16px;
}
.footer-contact ul li {
    display: flex; gap: 10px; align-items: flex-start;
    padding: 6px 0;
    font-size: 14px;
    color: #9FB4C3;
}
.footer-contact ul li i { margin-top: 4px; color: var(--primary-light); width: 16px; }
.footer-social {
    display: flex; gap: 10px; margin-top: 20px;
}
.footer-social a {
    width: 38px; height: 38px;
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 50%;
    display: inline-flex; align-items: center; justify-content: center;
    color: #CFDDE8; font-size: 15px;
    transition: all .25s;
}
.footer-social a:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
    transform: translateY(-2px);
}
.footer-bottom {
    background: #162B38;
    padding: 18px 0;
    margin-top: 40px;
    text-align: center;
    font-size: 14px;
    color: #7B8A9B;
}
@media (max-width: 767px) {
    .site-footer { padding: 40px 0 0; }
    .footer-bottom { font-size: 12px; padding: 14px 10px; }
}

/* ===== Utilities ===== */
.text-primary { color: var(--primary); }
.text-accent { color: var(--accent); }
.bg-white { background: var(--white); }
.bg-light { background: var(--light-bg); }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-3 { margin-bottom: 24px; }
.flex-center { display: flex; align-items: center; justify-content: center; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: 4px;
}
::selection { background: rgba(46,134,193,0.15); }

/* roulang page: article */
:root {
        --primary: #2E86C1;
        --primary-light: #5DADE2;
        --primary-lighter: #EAF2F7;
        --accent: #F2735C;
        --dark-blue: #1F3B4A;
        --dark-blue-deep: #162B38;
        --bg-body: #F5F8FA;
        --bg-card: #FFFFFF;
        --bg-alt: #EAF2F7;
        --text-main: #212F3C;
        --text-body: #34495E;
        --text-muted: #7B8A9B;
        --text-faint: #ACB8C4;
        --border-color: #D6E1EA;
        --border-light: #E5EDF3;
        --radius: 12px;
        --radius-lg: 16px;
        --shadow-sm: 0 2px 8px rgba(31, 59, 74, 0.08);
        --shadow-lg: 0 12px 28px rgba(31, 59, 74, 0.15);
        --transition: all 0.3s ease;
        --nav-height: 72px;
        --content-max: 1200px;
        --section-gap: 90px;
    }

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

    body {
        margin: 0;
        font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
        font-size: 16px;
        line-height: 1.8;
        color: var(--text-body);
        background-color: var(--bg-body);
        -webkit-font-smoothing: antialiased;
    }

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

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

    a:hover {
        color: #1B6FAA;
    }

    h1, h2, h3, h4, h5, h6 {
        color: var(--text-main);
        line-height: 1.4;
        margin: 0 0 16px;
        font-weight: 700;
    }

    h1 {
        font-size: 38px;
        letter-spacing: -0.5px;
        line-height: 1.3;
    }

    h2 {
        font-size: 28px;
        margin-bottom: 20px;
    }

    h3 {
        font-size: 20px;
        font-weight: 600;
    }

    p {
        margin: 0 0 16px;
    }

    .grid-container {
        max-width: var(--content-max);
        padding-left: 20px;
        padding-right: 20px;
    }

    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 100;
        height: var(--nav-height);
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border-bottom: 1px solid rgba(230, 237, 243, 0.8);
        transition: var(--transition);
    }

    .site-header.scrolled {
        background: #FFFFFF;
        box-shadow: 0 4px 20px rgba(31, 59, 74, 0.08);
    }

    .site-header .grid-container {
        height: 100%;
    }

    .site-header .grid-x {
        height: 100%;
        align-items: center;
    }

    .logo {
        display: inline-flex;
        align-items: baseline;
        gap: 6px;
        padding: 8px 0;
        font-size: 0;
        line-height: 1;
    }

    .logo-main {
        font-size: 24px;
        font-weight: 800;
        color: var(--text-main);
        letter-spacing: -0.5px;
    }

    .logo-sub {
        font-size: 13px;
        font-weight: 500;
        color: var(--primary);
        padding: 3px 8px;
        background: var(--primary-lighter);
        border-radius: 20px;
        font-style: normal;
        letter-spacing: 1px;
    }

    .logo:hover .logo-main {
        color: var(--primary);
    }

    .main-nav {
        display: flex;
        align-items: center;
        justify-content: flex-end;
        gap: 20px;
        height: 100%;
    }

    .main-nav .menu {
        display: flex;
        list-style: none;
        margin: 0;
        padding: 0;
        gap: 8px;
    }

    .main-nav .menu > li {
        position: relative;
        margin: 0;
    }

    .main-nav .menu > li > a {
        display: inline-flex;
        align-items: center;
        height: 40px;
        padding: 0 18px;
        border-radius: 8px;
        font-size: 15px;
        font-weight: 500;
        color: var(--text-main);
        line-height: 40px;
    }

    .main-nav .menu > li > a:hover {
        background: var(--primary-lighter);
        color: var(--primary);
    }

    .main-nav .menu > li.active > a {
        color: var(--primary);
        background: var(--primary-lighter);
        box-shadow: inset 0 -2px 0 var(--primary);
    }

    .main-nav .menu > li > a:focus-visible,
    .main-nav .nav-search input:focus-visible {
        outline: 2px solid var(--primary);
        outline-offset: 2px;
    }

    .nav-search {
        display: flex;
        align-items: center;
        gap: 8px;
        width: 220px;
        height: 38px;
        padding: 0 14px;
        background: var(--bg-body);
        border: 1px solid var(--border-color);
        border-radius: 8px;
        transition: var(--transition);
    }

    .nav-search:hover,
    .nav-search:focus-within {
        border-color: var(--primary);
        background: #FFFFFF;
        box-shadow: 0 0 0 4px rgba(46, 134, 193, 0.08);
    }

    .nav-search i {
        color: var(--text-muted);
        font-size: 14px;
    }

    .nav-search input {
        border: none;
        outline: none;
        background: transparent;
        font-size: 14px;
        color: var(--text-body);
        width: 100%;
    }

    .nav-search input::placeholder {
        color: var(--text-faint);
    }

    .dropdown-trigger {
        position: static;
    }

    .dropdown-panel {
        display: block;
        position: absolute;
        top: calc(100% + 12px);
        left: 50%;
        transform: translateX(-50%) translateY(12px);
        width: 620px;
        background: #FFFFFF;
        border-radius: var(--radius);
        box-shadow: 0 12px 32px rgba(31, 59, 74, 0.14);
        padding: 24px;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        border: 1px solid var(--border-light);
        z-index: 50;
    }

    .dropdown-trigger:hover .dropdown-panel,
    .dropdown-trigger:focus-within .dropdown-panel {
        opacity: 1;
        visibility: visible;
        transform: translateX(-50%) translateY(0);
    }

    .dropdown-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 28px;
    }

    .dropdown-title {
        font-size: 13px;
        font-weight: 700;
        color: var(--text-faint);
        text-transform: uppercase;
        letter-spacing: 2px;
        margin-bottom: 12px;
    }

    .dropdown-links {
        display: flex;
        flex-direction: column;
        gap: 4px;
    }

    .dropdown-links a {
        padding: 8px 12px;
        border-radius: 8px;
        font-size: 15px;
        color: var(--text-body);
        font-weight: 500;
    }

    .dropdown-links a:hover {
        background: #F2F7FB;
        color: var(--primary);
    }

    .dropdown-card {
        padding: 12px;
        border-radius: 8px;
        margin-bottom: 8px;
        transition: var(--transition);
    }

    .dropdown-card a {
        font-weight: 600;
        color: var(--text-main);
        display: block;
        font-size: 15px;
    }

    .dropdown-card p {
        margin: 4px 0 0;
        font-size: 13px;
        color: var(--text-muted);
        line-height: 1.6;
    }

    .dropdown-card:hover {
        background: #F2F7FB;
    }

    .header-cta {
        display: inline-flex;
        align-items: center;
        height: 38px;
        padding: 0 20px;
        background: var(--primary);
        color: #FFFFFF;
        border-radius: 8px;
        font-size: 14px;
        font-weight: 600;
        transition: var(--transition);
        box-shadow: 0 4px 12px rgba(46, 134, 193, 0.3);
    }

    .header-cta:hover {
        background: #1B6FAA;
        color: #FFFFFF;
        box-shadow: 0 8px 18px rgba(46, 134, 193, 0.35);
        transform: translateY(-1px);
    }

    .hamburger {
        display: none;
        width: 44px;
        height: 44px;
        border: none;
        background: transparent;
        border-radius: 8px;
        cursor: pointer;
        justify-content: center;
        align-items: center;
        color: var(--text-main);
        font-size: 20px;
        transition: var(--transition);
    }

    .hamburger:hover {
        background: var(--primary-lighter);
    }

    .hamburger:focus-visible {
        outline: 2px solid var(--primary);
        outline-offset: 2px;
    }

    .main-content {
        padding-top: var(--nav-height);
    }

    .article-hero {
        position: relative;
        background: linear-gradient(to bottom, #E8F2F9, var(--bg-body));
        padding: 64px 0 32px;
        overflow: hidden;
    }

    .article-hero::before {
        content: "";
        position: absolute;
        top: 0;
        right: 0;
        bottom: 0;
        left: 0;
        background-image: url('/assets/images/backpic/back-2.png');
        background-size: cover;
        background-position: center;
        opacity: 0.3;
        z-index: 0;
    }

    .article-hero .grid-container {
        position: relative;
        z-index: 1;
    }

    .breadcrumb {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        color: var(--text-muted);
        margin-bottom: 24px;
        padding: 8px 14px;
        background: rgba(255, 255, 255, 0.8);
        border-radius: 8px;
        border: 1px solid var(--border-light);
        backdrop-filter: blur(4px);
    }

    .breadcrumb a {
        color: var(--text-muted);
    }

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

    .breadcrumb .current {
        color: var(--primary);
        font-weight: 500;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        max-width: 320px;
    }

    .breadcrumb i {
        font-size: 11px;
        color: var(--text-faint);
    }

    .article-title-wrap {
        max-width: 860px;
    }

    .article-title-wrap h1 {
        font-size: 38px;
        line-height: 1.35;
        margin-bottom: 18px;
        letter-spacing: -0.5px;
    }

    .article-meta {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 16px;
        margin-bottom: 24px;
        font-size: 14px;
        color: var(--text-muted);
    }

    .tag {
        display: inline-flex;
        align-items: center;
        padding: 4px 12px;
        background: var(--primary-lighter);
        color: var(--primary);
        border-radius: 20px;
        font-size: 13px;
        font-weight: 600;
    }

    .tag-accent {
        background: rgba(242, 115, 92, 0.12);
        color: #D15A44;
    }

    .article-excerpt {
        margin-top: 20px;
        padding: 20px 24px;
        background: rgba(255, 255, 255, 0.85);
        border-left: 4px solid var(--primary);
        border-radius: 0 var(--radius) var(--radius) 0;
        box-shadow: var(--shadow-sm);
        font-size: 15px;
        line-height: 2;
        color: var(--text-main);
    }

    .article-main {
        padding: 40px 0 60px;
    }

    .article-body {
        max-width: 860px;
        margin: 0 auto;
    }

    .article-content {
        background: var(--bg-card);
        padding: 48px;
        border-radius: var(--radius);
        box-shadow: var(--shadow-sm);
        margin-bottom: 32px;
        font-size: 16px;
        line-height: 2;
        color: var(--text-body);
        word-wrap: break-word;
        overflow-wrap: break-word;
    }

    .article-content h2 {
        font-size: 26px;
        margin: 40px 0 16px;
        padding-top: 12px;
    }

    .article-content h3 {
        font-size: 20px;
        margin: 32px 0 14px;
    }

    .article-content h4 {
        font-size: 17px;
        margin: 24px 0 10px;
    }

    .article-content p {
        margin-bottom: 18px;
    }

    .article-content ul,
    .article-content ol {
        margin: 0 0 20px 20px;
    }

    .article-content li {
        margin-bottom: 8px;
    }

    .article-content blockquote {
        margin: 28px 0;
        padding: 18px 24px;
        border-left: 4px solid var(--primary);
        background: var(--primary-lighter);
        border-radius: 0 var(--radius) var(--radius) 0;
        font-style: normal;
        color: var(--text-main);
    }

    .article-content blockquote p {
        margin-bottom: 0;
    }

    .article-content a {
        text-decoration: underline;
        text-underline-offset: 3px;
    }

    .article-content a:hover {
        color: #1B6FAA;
    }

    .article-content img {
        border-radius: var(--radius);
        margin: 24px 0;
    }

    .article-content table {
        width: 100%;
        border-collapse: collapse;
        margin: 24px 0;
        font-size: 15px;
    }

    .article-content table th {
        background: var(--primary-lighter);
        color: var(--text-main);
        font-weight: 600;
        padding: 12px 16px;
        text-align: left;
    }

    .article-content table td {
        padding: 12px 16px;
        border-bottom: 1px solid var(--border-light);
    }

    .article-content > *:first-child {
        margin-top: 0;
    }

    .not-found {
        background: var(--bg-card);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-sm);
        padding: 60px 40px;
        text-align: center;
        max-width: 860px;
        margin: 0 auto;
    }

    .not-found i {
        font-size: 48px;
        color: var(--text-faint);
        display: block;
        margin-bottom: 20px;
    }

    .not-found h2 {
        font-size: 28px;
        margin-bottom: 12px;
    }

    .not-found p {
        color: var(--text-muted);
        margin-bottom: 24px;
    }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        height: 46px;
        padding: 0 28px;
        border-radius: 8px;
        font-size: 15px;
        font-weight: 600;
        border: none;
        cursor: pointer;
        transition: var(--transition);
    }

    .btn-primary {
        background: var(--primary);
        color: #FFFFFF;
        box-shadow: 0 4px 12px rgba(46, 134, 193, 0.3);
    }

    .btn-primary:hover {
        background: #1B6FAA;
        color: #FFFFFF;
        box-shadow: 0 8px 20px rgba(46, 134, 193, 0.4);
        transform: translateY(-2px);
    }

    .btn-outline {
        background: transparent;
        border: 2px solid var(--primary);
        color: var(--primary);
    }

    .btn-outline:hover {
        background: var(--primary-lighter);
        color: #1B6FAA;
        transform: translateY(-2px);
    }

    .btn:focus-visible {
        outline: 2px solid var(--primary);
        outline-offset: 3px;
    }

    .related-section {
        background: var(--bg-alt);
        padding: var(--section-gap) 0;
    }

    .section-header {
        display: flex;
        align-items: flex-end;
        justify-content: space-between;
        margin-bottom: 40px;
    }

    .section-header .section-title {
        font-size: 28px;
        margin-bottom: 0;
        position: relative;
    }

    .section-header .section-title::before {
        content: "";
        display: block;
        width: 40px;
        height: 4px;
        background: var(--accent);
        border-radius: 2px;
        margin-bottom: 14px;
    }

    .section-header .section-more {
        color: var(--text-muted);
        font-size: 14px;
        font-weight: 500;
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }

    .section-header .section-more:hover {
        color: var(--primary);
    }

    .related-list {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }

    .related-card {
        background: var(--bg-card);
        border-radius: var(--radius);
        box-shadow: var(--shadow-sm);
        overflow: hidden;
        transition: var(--transition);
        display: block;
    }

    .related-card:hover {
        box-shadow: var(--shadow-lg);
        transform: translateY(-3px);
    }

    .related-card .card-img {
        position: relative;
        overflow: hidden;
        padding-top: 56.25%;
        background: var(--primary-lighter);
    }

    .related-card .card-img img {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.4s ease;
    }

    .related-card:hover .card-img img {
        transform: scale(1.05);
    }

    .related-card .card-img::after {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(to top, rgba(31, 59, 74, 0.25), transparent 50%);
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    .related-card:hover .card-img::after {
        opacity: 1;
    }

    .related-card .card-body {
        padding: 22px 22px 26px;
    }

    .related-card .card-body h3 {
        font-size: 17px;
        margin-bottom: 10px;
        line-height: 1.5;
        transition: color 0.3s;
    }

    .related-card .card-body h3 a {
        color: var(--text-main);
    }

    .related-card .card-body h3 a:hover {
        color: var(--primary);
    }

    .related-card .card-meta {
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: 13px;
        color: var(--text-muted);
        margin-bottom: 12px;
    }

    .related-card .card-meta .tag {
        padding: 2px 10px;
        font-size: 12px;
    }

    .article-cta {
        background: var(--dark-blue);
        padding: 64px 0;
        position: relative;
        overflow: hidden;
    }

    .article-cta::before {
        content: "";
        position: absolute;
        top: 0;
        right: 0;
        bottom: 0;
        left: 0;
        background-image: url('/assets/images/backpic/back-3.webp');
        background-size: cover;
        background-position: center;
        opacity: 0.15;
    }

    .article-cta .grid-container {
        position: relative;
        z-index: 1;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 32px;
        flex-wrap: wrap;
    }

    .article-cta .cta-title {
        color: #FFFFFF;
        font-size: 26px;
        margin-bottom: 8px;
    }

    .article-cta .cta-text {
        color: #CFDDE8;
        font-size: 15px;
        margin: 0;
    }

    .article-cta .btn {
        min-width: 180px;
    }

    .site-footer {
        background: var(--dark-blue);
        color: #CFDDE8;
        padding-top: 60px;
        font-size: 14px;
    }

    .site-footer .logo-main {
        color: #FFFFFF;
    }

    .site-footer .logo-sub {
        background: rgba(255, 255, 255, 0.1);
        color: var(--primary-light);
    }

    .footer-brand p {
        margin-top: 18px;
        font-size: 14px;
        line-height: 1.8;
        color: #9FB3C2;
    }

    .footer-social {
        display: flex;
        gap: 12px;
        margin-top: 20px;
    }

    .footer-social a {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 38px;
        height: 38px;
        border: 1px solid rgba(255, 255, 255, 0.2);
        border-radius: 50%;
        color: #CFDDE8;
        font-size: 15px;
        transition: var(--transition);
    }

    .footer-social a:hover {
        background: var(--primary);
        border-color: var(--primary);
        color: #FFFFFF;
        transform: translateY(-3px);
    }

    .footer-social a:focus-visible {
        outline: 2px solid var(--primary-light);
        outline-offset: 2px;
    }

    .footer-links h4 {
        color: #FFFFFF;
        font-size: 16px;
        margin-bottom: 18px;
    }

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

    .footer-links ul li {
        margin-bottom: 10px;
    }

    .footer-links ul li a {
        color: #9FB3C2;
        font-size: 14px;
        line-height: 1.8;
    }

    .footer-links ul li a:hover {
        color: #FFFFFF;
        padding-left: 6px;
    }

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

    .footer-contact ul li {
        margin-bottom: 12px;
        display: flex;
        align-items: flex-start;
        gap: 10px;
        color: #9FB3C2;
        font-size: 14px;
        line-height: 1.7;
    }

    .footer-contact ul li i {
        color: var(--primary-light);
        margin-top: 4px;
        width: 16px;
        text-align: center;
        flex-shrink: 0;
    }

    .footer-bottom {
        background: var(--dark-blue-deep);
        padding: 20px 0;
        margin-top: 48px;
        color: #7B8A9B;
        font-size: 13px;
    }

    .footer-bottom .grid-container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        flex-wrap: wrap;
    }

    .footer-bottom a {
        color: #9FB3C2;
    }

    .footer-bottom a:hover {
        color: #FFFFFF;
    }

    .mobile-drawer {
        display: none;
        position: fixed;
        top: var(--nav-height);
        right: 0;
        width: 320px;
        max-width: 92vw;
        height: calc(100vh - var(--nav-height));
        background: #FFFFFF;
        padding: 24px;
        z-index: 200;
        box-shadow: -8px 0 30px rgba(31, 59, 74, 0.15);
        overflow-y: auto;
        transform: translateX(100%);
        transition: transform 0.35s ease;
        border-radius: 16px 0 0 16px;
    }

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

    .mobile-drawer .drawer-links {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .mobile-drawer .drawer-links li a {
        display: block;
        padding: 14px 16px;
        border-radius: 10px;
        font-size: 16px;
        font-weight: 500;
        color: var(--text-main);
        margin-bottom: 4px;
    }

    .mobile-drawer .drawer-links li a:hover,
    .mobile-drawer .drawer-links li a.active {
        background: var(--primary-lighter);
        color: var(--primary);
    }

    .drawer-overlay {
        display: none;
        position: fixed;
        top: var(--nav-height);
        right: 0;
        bottom: 0;
        left: 0;
        background: rgba(31, 59, 74, 0.4);
        z-index: 150;
        opacity: 0;
        transition: opacity 0.3s ease;
    }

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

    @media (max-width: 1024px) {
        .main-nav .menu {
            gap: 4px;
        }

        .main-nav .menu > li > a {
            padding: 0 14px;
            font-size: 14px;
        }

        .nav-search {
            width: 170px;
        }

        .dropdown-panel {
            width: 520px;
        }
    }

    @media (max-width: 767px) {
        :root {
            --section-gap: 56px;
        }

        h1 {
            font-size: 28px;
        }

        h2 {
            font-size: 22px;
        }

        .main-nav .menu,
        .nav-search,
        .header-cta {
            display: none;
        }

        .hamburger {
            display: inline-flex;
        }

        .article-hero {
            padding: 32px 0 24px;
        }

        .article-title-wrap h1 {
            font-size: 26px;
        }

        .article-excerpt {
            padding: 16px 18px;
            font-size: 14px;
        }

        .related-list {
            grid-template-columns: 1fr;
            gap: 20px;
        }

        .article-content {
            padding: 28px 20px;
            font-size: 15px;
            line-height: 1.9;
        }

        .article-content h2 {
            font-size: 21px;
        }

        .article-content h3 {
            font-size: 18px;
        }

        .section-header {
            flex-direction: column;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 28px;
        }

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

        .article-cta .grid-container {
            flex-direction: column;
            align-items: flex-start;
        }

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

        .breadcrumb .current {
            max-width: 180px;
        }

        .footer-bottom .grid-container {
            flex-direction: column;
            text-align: center;
        }
    }

    @media (min-width: 768px) and (max-width: 1023px) {
        .related-list {
            grid-template-columns: repeat(2, 1fr);
        }

        .related-card:last-child {
            grid-column: 1 / -1;
            max-width: 50%;
            margin: 0 auto;
        }
    }

    @media (max-width: 520px) {
        .breadcrumb {
            gap: 4px;
            font-size: 12px;
            padding: 6px 10px;
        }

        .breadcrumb i {
            font-size: 9px;
        }

        .article-meta {
            gap: 10px;
            font-size: 13px;
        }

        .related-card .card-body {
            padding: 18px;
        }
    }

/* roulang page: category1 */
/* ============ 设计变量 ============ */
        :root {
            --primary: #2E86C1;
            --primary-light: #5DADE2;
            --primary-lighter: #EAF2F7;
            --primary-soft: #F2F7FB;
            --accent: #F2735C;
            --ink-dark: #1F3B4A;
            --ink-darker: #162B38;
            --text-main: #212F3C;
            --text-body: #34495E;
            --text-muted: #7B8A9B;
            --text-placeholder: #ACB8C4;
            --bg-main: #F5F8FA;
            --bg-card: #FFFFFF;
            --bg-alt: #EAF2F7;
            --border-color: #E5EDF3;
            --border-strong: #D6E1EA;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(31, 59, 74, 0.08);
            --shadow-lg: 0 12px 28px rgba(31, 59, 74, 0.15);
            --shadow-accent: 0 4px 12px rgba(46, 134, 193, 0.3);
            --container-w: 1200px;
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --spacer-lg: 90px;
            --spacer-md: 60px;
            --spacer-sm: 40px;
            --transition: all 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-stack);
            background: var(--bg-main);
            color: var(--text-body);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

        a:hover {
            color: #216998;
        }

        ul,
        ol {
            list-style: none;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        input:focus-visible,
        textarea:focus-visible,
        button:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ============ 通用容器与排版 ============ */
        .container {
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--spacer-lg) 0;
        }

        .section-alt {
            background: var(--bg-alt);
        }

        .section-white {
            background: var(--bg-card);
        }

        .section-head {
            max-width: 720px;
            margin: 0 auto 48px;
            text-align: center;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.4;
            letter-spacing: -0.5px;
            margin-bottom: 12px;
        }

        .section-head p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-muted);
        }

        .section-anchor {
            position: relative;
        }

        .anchor-line {
            width: 48px;
            height: 4px;
            background: var(--primary);
            border-radius: 2px;
            margin: 0 auto 24px;
        }

        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: var(--transition);
            line-height: 1.4;
            border: 2px solid transparent;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-accent);
        }

        .btn-primary:hover {
            background: #216998;
            color: #fff;
            box-shadow: 0 6px 18px rgba(46, 134, 193, 0.4);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            border-color: var(--primary);
            color: var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary-soft);
            color: #216998;
            border-color: #216998;
            transform: translateY(-2px);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 12px rgba(242, 115, 92, 0.3);
        }

        .btn-accent:hover {
            background: #e05a42;
            color: #fff;
            transform: translateY(-2px);
        }

        /* ============ 顶部导航 ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(229, 237, 243, 0.8);
            box-shadow: 0 1px 0 rgba(31, 59, 74, 0.03);
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(31, 59, 74, 0.08);
        }

        .site-header .grid-container {
            max-width: var(--container-w);
            padding: 0 20px;
        }

        .site-header .grid-x {
            align-items: center;
            min-height: 72px;
        }

        .logo {
            display: flex;
            align-items: baseline;
            gap: 6px;
            line-height: 1;
        }

        .logo-main {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: -0.5px;
        }

        .logo-sub {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-lighter);
            padding: 4px 8px;
            border-radius: 6px;
            letter-spacing: 0.5px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            justify-content: flex-end;
            gap: 12px;
        }

        .nav-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg-main);
            border: 1px solid var(--border-color);
            border-radius: 40px;
            padding: 8px 18px;
            transition: var(--transition);
            width: 180px;
        }

        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46, 134, 193, 0.1);
            background: #fff;
        }

        .nav-search i {
            font-size: 13px;
            color: var(--text-muted);
        }

        .nav-search input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 13px;
            width: 100%;
            color: var(--text-main);
        }

        .nav-search input::placeholder {
            color: var(--text-placeholder);
        }

        .site-header .menu {
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0;
            padding: 0;
            background: transparent;
        }

        .site-header .menu>li {
            margin: 0;
        }

        .site-header .menu>li>a {
            display: flex;
            align-items: center;
            padding: 10px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: var(--radius-sm);
            position: relative;
            transition: var(--transition);
            line-height: 1.4;
        }

        .site-header .menu>li>a:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }

        .site-header .menu>li.active>a {
            color: var(--primary);
            font-weight: 600;
        }

        .site-header .menu>li.active>a::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
        }

        /* 下拉面板 */
        .dropdown-trigger {
            position: relative;
        }

        .dropdown-panel {
            position: absolute;
            top: calc(100% + 8px);
            right: 0;
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: 0 12px 32px rgba(31, 59, 74, 0.14);
            min-width: 480px;
            padding: 24px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(12px);
            transition: opacity 0.28s ease, transform 0.28s ease, visibility 0.28s;
            z-index: 100;
            border: 1px solid var(--border-color);
        }

        .dropdown-trigger:hover .dropdown-panel,
        .dropdown-trigger:focus-within .dropdown-panel {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .dropdown-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .dropdown-title {
            font-size: 13px;
            font-weight: 700;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.8px;
            margin-bottom: 16px;
            padding-bottom: 8px;
            border-bottom: 1px solid var(--border-color);
        }

        .dropdown-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .dropdown-links a {
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: var(--text-body);
            transition: var(--transition);
            font-weight: 500;
        }

        .dropdown-links a:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .dropdown-card {
            background: var(--bg-main);
            padding: 14px 16px;
            border-radius: var(--radius-sm);
            margin-bottom: 10px;
            transition: var(--transition);
        }

        .dropdown-card:hover {
            background: var(--primary-soft);
        }

        .dropdown-card a {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            display: block;
            margin-bottom: 2px;
        }

        .dropdown-card a:hover {
            color: var(--primary);
        }

        .dropdown-card p {
            font-size: 13px;
            line-height: 1.6;
            color: var(--text-muted);
            margin: 0;
        }

        /* 移动端切换 */
        .mobile-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            background: var(--bg-main);
            border: 1px solid var(--border-color);
            font-size: 20px;
            color: var(--text-main);
            cursor: pointer;
            transition: var(--transition);
        }

        .mobile-toggle:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }

        /* ============ 分类页 Hero ============ */
        .category-hero {
            position: relative;
            padding: 64px 0 72px;
            background: linear-gradient(135deg, #E8F2F9 0%, #F5F8FA 60%, #edf5f8 100%);
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }

        .category-hero::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('/assets/images/backpic/back-1.png') center right / 45% auto no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }

        .category-hero .grid-container {
            position: relative;
            z-index: 2;
            max-width: var(--container-w);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 36px;
        }

        .breadcrumb a {
            color: var(--text-muted);
            transition: var(--transition);
            padding: 4px 6px;
            border-radius: 4px;
        }

        .breadcrumb a:hover {
            color: var(--primary);
            background: rgba(46, 134, 193, 0.08);
        }

        .breadcrumb i {
            font-size: 11px;
            color: var(--text-placeholder);
        }

        .breadcrumb span {
            color: var(--primary);
            font-weight: 600;
        }

        .category-hero .hero-content {
            max-width: 780px;
        }

        .category-hero h1 {
            font-size: 38px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.8px;
            line-height: 1.35;
            margin-bottom: 18px;
        }

        .category-hero h1 .brand-mark {
            color: var(--primary);
            position: relative;
        }

        .category-hero .lead {
            font-size: 17px;
            line-height: 1.85;
            color: var(--text-body);
            max-width: 680px;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ============ 服务特性 ============ */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }

        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 36px 28px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }

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

        .feature-card .icon-box {
            width: 64px;
            height: 64px;
            border-radius: 14px;
            background: var(--primary-lighter);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            transition: var(--transition);
        }

        .feature-card:hover .icon-box {
            background: var(--primary);
            transform: scale(1.05);
        }

        .feature-card .icon-box i {
            font-size: 24px;
            color: var(--primary);
            transition: var(--transition);
        }

        .feature-card:hover .icon-box i {
            color: #fff;
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .feature-card p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-muted);
        }

        /* ============ 使用场景 ============ */
        .scenario-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
            border: 1px solid var(--border-color);
        }

        .scenario-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        .scenario-card .scenario-img {
            height: 210px;
            overflow: hidden;
            position: relative;
        }

        .scenario-card .scenario-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .scenario-card:hover .scenario-img img {
            transform: scale(1.05);
        }

        .scenario-card .scenario-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(31, 59, 74, 0.15), transparent 60%);
        }

        .scenario-card .scenario-body {
            padding: 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .scenario-card .tag-badge {
            align-self: flex-start;
            background: var(--primary-lighter);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 40px;
            margin-bottom: 14px;
            display: inline-block;
        }

        .scenario-card h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .scenario-card p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-muted);
            flex: 1;
            margin-bottom: 12px;
        }

        .scenario-card .more-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .scenario-card .more-link:hover {
            gap: 12px;
            color: #216998;
        }

        .scenario-card .more-link i {
            font-size: 13px;
            transition: var(--transition);
        }

        /* ============ 服务流程 ============ */
        .process-section {
            background: linear-gradient(160deg, var(--ink-dark) 0%, #28485a 100%);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .process-section .section-head h2 {
            color: #fff;
        }

        .process-section .section-head p {
            color: rgba(207, 221, 232, 0.8);
        }

        .process-section .anchor-line {
            background: var(--accent);
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
            z-index: 2;
        }

        .process-step {
            text-align: center;
            padding: 32px 20px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(4px);
            transition: var(--transition);
        }

        .process-step:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-3px);
        }

        .step-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin: 0 auto 20px;
            box-shadow: 0 6px 16px rgba(242, 115, 92, 0.3);
        }

        .process-step h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 10px;
            color: #fff;
        }

        .process-step p {
            font-size: 13.5px;
            line-height: 1.7;
            color: rgba(207, 221, 232, 0.75);
        }

        /* 流程连接线 */
        .process-step {
            position: relative;
        }

        .process-step:not(:last-child)::after {
            content: "";
            position: absolute;
            top: 50%;
            right: -28px;
            width: 26px;
            height: 2px;
            background: rgba(255, 255, 255, 0.25);
        }

        /* ============ 热门赛事项目 ============ */
        .project-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .project-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
            position: relative;
        }

        .project-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        .project-card .project-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

        .project-card .project-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .project-card:hover .project-img img {
            transform: scale(1.06);
        }

        .project-card .project-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(31, 59, 74, 0.2), transparent 50%);
        }

        .project-card .project-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(255, 255, 255, 0.95);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 40px;
            box-shadow: 0 2px 8px rgba(31, 59, 74, 0.1);
            z-index: 2;
        }

        .project-card .project-body {
            padding: 24px;
        }

        .project-card .project-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .project-card .project-body p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-muted);
            margin-bottom: 14px;
        }

        .project-card .project-foot {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--border-color);
            padding-top: 14px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .project-card .project-foot span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* ============ 数据对比区块 ============ */
        .compare-section {
            background: var(--bg-card);
        }

        .compare-card {
            background: var(--bg-main);
            border-radius: var(--radius);
            padding: 36px;
            height: 100%;
            border: 1px solid var(--border-color);
            position: relative;
        }

        .compare-card.compare-after {
            background: var(--primary-lighter);
            border-color: rgba(46, 134, 193, 0.25);
        }

        .compare-card h3 {
            font-size: 19px;
            font-weight: 600;
            margin-bottom: 6px;
        }

        .compare-card.before h3 {
            color: #5B7284;
        }

        .compare-card.after h3 {
            color: var(--primary);
        }

        .compare-card .badge-line {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .compare-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .compare-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 14px 18px;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            font-size: 14px;
        }

        .compare-item .label {
            color: var(--text-body);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .compare-item .label i {
            color: var(--text-placeholder);
            font-size: 14px;
            width: 18px;
            text-align: center;
        }

        .compare-item .value {
            font-weight: 700;
            color: var(--text-main);
            font-family: "Helvetica Neue", sans-serif;
        }

        .compare-card.after .compare-item .value {
            color: var(--accent);
            font-weight: 800;
        }

        .compare-arrow-wrap {
            display: flex;
            align-items: center;
            justify-content: center;
            height: 100%;
        }

        .compare-arrow {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-accent);
            animation: pulseArrow 2s infinite;
        }

        .compare-arrow i {
            color: #fff;
            font-size: 22px;
        }

        @keyframes pulseArrow {
            0%,
            100% {
                transform: scale(1);
                box-shadow: 0 0 0 0 rgba(46, 134, 193, 0.3);
            }
            50% {
                transform: scale(1.05);
                box-shadow: 0 0 0 10px rgba(46, 134, 193, 0);
            }
        }

        /* ============ FAQ ============ */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            margin-bottom: 16px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            overflow: hidden;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .faq-item.open {
            box-shadow: var(--shadow-lg);
            border-color: rgba(46, 134, 193, 0.2);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
            gap: 16px;
            transition: var(--transition);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-lighter);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--primary);
            transition: var(--transition);
            position: relative;
        }

        .faq-question .faq-icon::before {
            content: "+";
            font-weight: 700;
            font-size: 16px;
            transition: transform 0.3s ease;
        }

        .faq-item.open .faq-icon::before {
            transform: rotate(45deg);
        }

        .faq-item.open .faq-icon {
            background: var(--primary);
            color: #fff;
        }

        .faq-answer {
            display: none;
            padding: 0 24px 20px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-body);
            background: var(--primary-soft);
            border-top: 1px dashed var(--border-color);
            margin-top: 0;
        }

        .faq-answer-inner {
            padding-top: 16px;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        /* ============ CTA 区域 ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 60%, #6cb6e6 100%);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: -30%;
            right: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            pointer-events: none;
        }

        .cta-section::after {
            content: "";
            position: absolute;
            bottom: -40%;
            left: -5%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            pointer-events: none;
        }

        .cta-box {
            text-align: center;
            position: relative;
            z-index: 2;
            max-width: 720px;
            margin: 0 auto;
        }

        .cta-box h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .cta-box p {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 36px;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .cta-section .btn-outline {
            border-color: #fff;
            color: #fff;
            background: transparent;
        }

        .cta-section .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
        }

        .cta-section .btn-accent {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 8px 24px rgba(31, 59, 74, 0.2);
        }

        .cta-section .btn-accent:hover {
            background: rgba(255, 255, 255, 0.9);
            color: #216998;
        }

        /* 联系信息卡片 */
        .contact-cards {
            margin-top: 56px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
            z-index: 2;
        }

        .contact-mini-card {
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius);
            padding: 24px;
            text-align: center;
            transition: var(--transition);
            backdrop-filter: blur(4px);
        }

        .contact-mini-card:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
        }

        .contact-mini-card i {
            font-size: 24px;
            color: #fff;
            margin-bottom: 12px;
            display: block;
        }

        .contact-mini-card .card-label {
            font-size: 12.5px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 4px;
        }

        .contact-mini-card .card-value {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            word-break: break-all;
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--ink-dark);
            color: #CFDDE8;
            padding-top: 64px;
        }

        .site-footer .grid-container {
            max-width: var(--container-w);
        }

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

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

        .site-footer .logo-main {
            color: #fff;
        }

        .site-footer .logo-sub {
            color: var(--primary-light);
            background: rgba(255, 255, 255, 0.08);
        }

        .site-footer .footer-brand p {
            font-size: 14px;
            line-height: 1.85;
            color: rgba(207, 221, 232, 0.7);
            margin-bottom: 24px;
            max-width: 320px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 1px solid rgba(207, 221, 232, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #CFDDE8;
            font-size: 16px;
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 6px 16px rgba(46, 134, 193, 0.3);
        }

        .site-footer h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .site-footer h4::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 2px;
            background: var(--primary-light);
            border-radius: 1px;
        }

        .site-footer .footer-links ul,
        .site-footer .footer-contact ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .site-footer .footer-links a {
            color: rgba(207, 221, 232, 0.75);
            font-size: 14px;
            transition: var(--transition);
            display: inline-block;
            padding: 3px 0;
        }

        .site-footer .footer-links a:hover {
            color: #fff;
            transform: translateX(4px);
        }

        .site-footer .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 14px;
            color: rgba(207, 221, 232, 0.75);
            line-height: 1.6;
        }

        .site-footer .footer-contact i {
            color: var(--primary-light);
            font-size: 14px;
            margin-top: 4px;
            width: 16px;
            flex-shrink: 0;
        }

        .footer-bottom {
            margin-top: 56px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            background: var(--ink-darker);
            padding: 22px 0;
            text-align: center;
        }

        .footer-bottom span {
            font-size: 13px;
            color: rgba(207, 221, 232, 0.45);
        }

        /* ============ 移动端菜单 ============ */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--bg-card);
            z-index: 999;
            padding: 32px 24px;
            overflow-y: auto;
            box-shadow: 0 20px 40px rgba(31, 59, 74, 0.1);
            opacity: 0;
            visibility: hidden;
            transform: translateX(100%);
            transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
        }

        .mobile-menu.open {
            opacity: 1;
            visibility: visible;
            transform: translateX(0);
        }

        .mobile-menu ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .mobile-menu a {
            display: block;
            padding: 14px 18px;
            font-size: 17px;
            font-weight: 500;
            color: var(--text-main);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            border-bottom: 1px solid var(--border-color);
            min-height: 48px;
            line-height: 1.4;
        }

        .mobile-menu a:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .mobile-menu a.active {
            color: var(--primary);
            font-weight: 600;
            background: var(--primary-lighter);
            border-left: 3px solid var(--primary);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        }

        .mobile-menu .mobile-panel-title {
            font-size: 13px;
            font-weight: 700;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.8px;
            padding: 20px 18px 10px;
        }

        .mobile-menu .mobile-sub-link {
            padding-left: 32px;
            font-size: 15px;
            color: var(--text-body);
            border-bottom: none;
            min-height: auto;
            padding-top: 10px;
            padding-bottom: 10px;
        }

        /* ============ 响应式断点 ============ */
        /* 平板 768-1023 */
        @media screen and (max-width: 1023px) and (min-width: 768px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

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

            .process-step:not(:last-child)::after {
                display: none;
            }

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

            .contact-cards {
                grid-template-columns: repeat(2, 1fr);
            }

            .section-head h2 {
                font-size: 28px;
            }

            .nav-search {
                display: none;
            }

            .dropdown-panel {
                min-width: 400px;
            }
        }

        /* 移动端 767 以下 */
        @media screen and (max-width: 767px) {
            .section {
                padding: 48px 0;
            }

            .section-head {
                margin-bottom: 32px;
            }

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

            .section-head p {
                font-size: 14.5px;
            }

            .site-header .main-nav .menu {
                display: none;
            }

            .site-header .main-nav .nav-search {
                display: none;
            }

            .site-header .main-nav .mobile-toggle {
                display: flex;
            }

            .mobile-menu {
                display: block;
            }

            .category-hero {
                padding: 40px 0 48px;
            }

            .category-hero h1 {
                font-size: 27px;
                letter-spacing: -0.3px;
            }

            .category-hero .lead {
                font-size: 15px;
                line-height: 1.8;
            }

            .hero-actions {
                flex-direction: column;
                width: 100%;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .process-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .process-step:not(:last-child)::after {
                display: none;
            }

            .project-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .compare-arrow-wrap {
                padding: 16px 0;
            }

            .compare-arrow {
                transform: rotate(90deg);
            }

            .contact-cards {
                grid-template-columns: 1fr;
                gap: 12px;
            }

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

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

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

            .cta-actions .btn {
                width: 100%;
            }

            .faq-question {
                font-size: 15px;
                padding: 16px 18px;
            }

            .faq-answer {
                font-size: 14px;
                padding: 0 18px 16px;
            }

            .site-footer {
                padding-top: 40px;
            }

            .site-footer .grid-x {
                gap: 32px;
            }

            .footer-bottom {
                margin-top: 32px;
            }

            .dropdown-panel {
                min-width: auto;
                width: calc(100vw - 40px);
                position: fixed;
                left: 20px;
                right: 20px;
                top: 80px;
            }

            .dropdown-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .breadcrumb {
                margin-bottom: 24px;
                font-size: 12px;
                flex-wrap: wrap;
            }

            .category-hero h1 {
                font-size: 24px;
                line-height: 1.4;
            }
        }

        /* 520px 以下额外调整 */
        @media screen and (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .site-header .grid-container {
                padding: 0 16px;
            }

            .logo-main {
                font-size: 19px;
            }

            .logo-sub {
                font-size: 11px;
                padding: 3px 6px;
            }

            .project-card .project-img,
            .scenario-card .scenario-img {
                height: 170px;
            }

            .compare-card {
                padding: 24px 20px;
            }

            .btn {
                padding: 12px 24px;
                font-size: 14px;
            }
        }

        /* 用于 FAQ 的 JS class */
        .no-scroll {
            overflow: hidden;
        }