* { box-sizing: border-box; }
:root {
    --bg: #F4FBFF;
    --surface-soft: #E8F7FF;
    --surface: #FFFFFF;
    --title: #11AEEA;
    --primary: #1688D8;
    --deep: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(17,174,234,.18);
    --footer: #073A68;
    --footer-text: #EAF8FF;
    --gradient: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
    --shadow: 0 18px 48px rgba(18, 111, 169, .12);
    --shadow-sm: 0 10px 30px rgba(18, 111, 169, .09);
    --radius: 22px;
    --radius-sm: 15px;
}
html { scroll-behavior: smooth; }
body {
    margin: 0;
    padding-top: 76px;
    overflow-x: hidden;
    color: var(--text);
    background: var(--bg);
    font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
.skip-link {
    position: fixed; left: 16px; top: -48px; z-index: 1200;
    padding: 9px 14px; border-radius: 9px; color: #fff; background: var(--primary);
}
.skip-link:focus { top: 10px; }
.site-header {
    position: fixed; inset: 0 0 auto; z-index: 1000; height: 76px;
    background: rgba(255,255,255,.96); border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 24px rgba(21,90,157,.07); backdrop-filter: blur(14px);
}
.header-inner {
    width: min(100% - 32px, 1360px); height: 100%; margin-inline: auto;
    display: flex; align-items: center; gap: clamp(12px, 2vw, 28px);
}
.brand-logo, .drawer-logo, .footer-logo { display: inline-flex; flex: 0 0 auto; align-items: center; }
.brand-logo img { width: clamp(96px, 9vw, 132px); max-height: 48px; object-fit: contain; }
.desktop-nav {
    flex: 1; min-width: 0; display: flex; justify-content: center; align-items: center;
    gap: clamp(8px, 1.05vw, 18px); overflow: hidden;
}
.desktop-nav a {
    position: relative; flex: 0 0 auto; white-space: nowrap;
    color: var(--deep); font-size: clamp(13px, .95vw, 15px); font-weight: 700;
    padding: 26px 0 22px;
}
.desktop-nav a::after {
    content: ""; position: absolute; left: 50%; bottom: 14px; width: 0; height: 3px;
    border-radius: 999px; background: var(--gradient); transform: translateX(-50%); transition: width .25s ease;
}
.desktop-nav a:hover::after, .desktop-nav a.is-active::after { width: 100%; }
.desktop-nav a:hover, .desktop-nav a.is-active { color: var(--primary); }
.header-actions { flex: 0 0 auto; display: flex; align-items: center; gap: 10px; }
.main-btn, .ghost-btn, .text-link {
    display: inline-flex; align-items: center; justify-content: center; white-space: nowrap;
    border-radius: 999px; font-weight: 800; transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.main-btn { min-height: 44px; padding: 0 22px; color: #fff; background: var(--gradient); box-shadow: 0 10px 22px rgba(22,136,216,.22); }
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 28px rgba(22,136,216,.28); }
.ghost-btn { min-height: 44px; padding: 0 22px; color: var(--primary); border: 1px solid var(--border); background: #fff; }
.ghost-btn:hover { background: var(--surface-soft); transform: translateY(-2px); }
.text-link { color: var(--primary); gap: 7px; }
.text-link::after { content: "→"; }
.menu-toggle {
    display: none; width: 44px; height: 44px; padding: 10px; border: 0; border-radius: 13px;
    background: var(--surface-soft); align-items: center; justify-content: center; flex-direction: column; gap: 5px;
}
.menu-toggle span { width: 22px; height: 2px; border-radius: 3px; background: var(--deep); }
.drawer-overlay { position: fixed; inset: 0; z-index: 1080; background: rgba(7,58,104,.48); }
.mobile-drawer {
    position: fixed; z-index: 1090; inset: 0 0 0 auto; width: min(86vw, 390px); padding: 20px;
    background: #fff; box-shadow: -24px 0 60px rgba(7,58,104,.22); transform: translateX(105%); transition: transform .28s ease;
    overflow-y: auto;
}
.mobile-drawer.is-open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 18px; border-bottom: 1px solid var(--border); }
.drawer-logo img, .footer-logo img { width: 118px; max-height: 48px; object-fit: contain; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 50%; color: var(--deep); background: var(--surface-soft); font-size: 30px; line-height: 1; }
.drawer-nav { display: grid; gap: 6px; padding: 18px 0; }
.drawer-nav a { padding: 11px 14px; border-radius: 12px; color: var(--deep); font-weight: 700; }
.drawer-nav a:hover, .drawer-nav a.is-active { color: var(--primary); background: var(--surface-soft); }
.drawer-register { width: 100%; }
.container { width: min(100% - 32px, 1180px); margin-inline: auto; }
.wide-container { width: min(100% - 32px, 1360px); margin-inline: auto; }
.section { padding: clamp(54px, 7vw, 96px) 0; }
.section.compact { padding: clamp(38px, 5vw, 68px) 0; }
.section-soft { background: var(--surface-soft); }
.section-white { background: #fff; }
.section-head { max-width: 790px; margin-bottom: 32px; }
.section-head.center { margin-inline: auto; text-align: center; }
.eyebrow {
    display: inline-flex; align-items: center; gap: 8px; margin-bottom: 12px; color: var(--primary);
    font-size: 13px; font-weight: 900; letter-spacing: .12em; text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 24px; height: 3px; border-radius: 999px; background: var(--gradient); }
h1, h2, h3 { margin: 0; color: var(--deep); line-height: 1.25; }
h1 { font-size: clamp(34px, 5.1vw, 66px); letter-spacing: -.035em; }
h2 { font-size: clamp(28px, 3.6vw, 44px); letter-spacing: -.025em; }
h3 { font-size: clamp(19px, 2vw, 24px); }
p { margin: 0; }
.lead { margin-top: 20px; color: var(--muted); font-size: clamp(16px, 1.8vw, 20px); line-height: 1.9; }
.page-hero { position: relative; overflow: hidden; padding: clamp(72px, 9vw, 126px) 0 clamp(58px, 8vw, 104px); background: linear-gradient(145deg, #fff 0%, #F4FBFF 45%, #E8F7FF 100%); }
.page-hero::before, .page-hero::after { content: ""; position: absolute; border-radius: 50%; pointer-events: none; }
.page-hero::before { width: 330px; height: 330px; right: -100px; top: -120px; background: rgba(53,215,255,.18); }
.page-hero::after { width: 220px; height: 220px; left: -80px; bottom: -110px; background: rgba(22,136,216,.09); }
.hero-copy { position: relative; z-index: 1; max-width: 850px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.carousel-wrap { padding: 24px 0 0; }
.carousel {
    position: relative; overflow: hidden; border-radius: clamp(16px, 2vw, 28px); background: var(--surface-soft); box-shadow: var(--shadow);
}
.carousel-track { display: flex; transition: transform .55s cubic-bezier(.2,.7,.2,1); }
.carousel-slide { min-width: 100%; background: var(--surface-soft); }
.carousel-slide img { width: 100%; aspect-ratio: 16 / 6.4; object-fit: contain; background: var(--surface-soft); }
.carousel-arrow {
    position: absolute; top: 50%; z-index: 2; width: 46px; height: 46px; border: 1px solid rgba(255,255,255,.72);
    border-radius: 50%; color: #fff; background: rgba(7,58,104,.42); transform: translateY(-50%); backdrop-filter: blur(6px);
}
.carousel-arrow:hover { background: rgba(7,58,104,.7); }
.carousel-prev { left: 16px; }
.carousel-next { right: 16px; }
.carousel-dots { position: absolute; z-index: 2; left: 50%; bottom: 16px; display: flex; gap: 8px; transform: translateX(-50%); }
.carousel-dot { width: 9px; height: 9px; padding: 0; border: 0; border-radius: 50%; background: rgba(255,255,255,.62); }
.carousel-dot.is-active { width: 28px; border-radius: 99px; background: #fff; }
.intro-panel, .content-panel, .notice-panel, .review-card, .feature-card, .quick-card, .faq-item, .stat-card {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-sm);
}
.intro-panel { padding: clamp(28px, 4vw, 54px); display: grid; grid-template-columns: 1.25fr .75fr; gap: 32px; align-items: center; }
.intro-points { display: grid; gap: 13px; }
.intro-point { padding: 14px 16px; border-radius: 14px; color: var(--deep); background: var(--surface-soft); font-weight: 700; }
.quick-grid { display: grid; grid-template-columns: repeat(5, minmax(0,1fr)); gap: 16px; }
.quick-card { min-height: 210px; padding: 24px; display: flex; flex-direction: column; }
.quick-card .number { margin-bottom: 18px; color: var(--title); font-size: 13px; font-weight: 900; }
.quick-card p { margin: 12px 0 18px; color: var(--muted); font-size: 14px; line-height: 1.75; }
.quick-card .text-link { margin-top: auto; align-self: flex-start; }
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 20px; }
.feature-card { padding: clamp(23px, 3vw, 34px); }
.feature-card .tag { display: inline-flex; margin-bottom: 18px; padding: 6px 11px; border-radius: 999px; color: var(--primary); background: var(--surface-soft); font-size: 12px; font-weight: 900; }
.feature-card p { margin-top: 13px; color: var(--muted); }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(24px, 5vw, 64px); align-items: center; }
.split.reverse .media { order: 2; }
.media { overflow: hidden; border-radius: var(--radius); background: var(--surface-soft); box-shadow: var(--shadow); }
.media img { width: 100%; max-height: 480px; object-fit: contain; }
.content-copy p + p { margin-top: 14px; }
.content-copy p { color: var(--muted); }
.list-clean { display: grid; gap: 10px; margin: 22px 0 0; padding: 0; list-style: none; }
.list-clean li { position: relative; padding-left: 24px; color: var(--text); }
.list-clean li::before { content: ""; position: absolute; left: 0; top: .73em; width: 9px; height: 9px; border-radius: 50%; background: var(--gradient); }
.info-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 20px; }
.content-panel { padding: clamp(24px, 3.5vw, 38px); }
.content-panel p { margin-top: 14px; color: var(--muted); }
.steps { counter-reset: steps; display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; }
.step { padding: 26px; border-radius: var(--radius); background: #fff; border: 1px solid var(--border); }
.step::before { counter-increment: steps; content: "0" counter(steps); display: block; margin-bottom: 16px; color: var(--title); font-weight: 900; }
.step p { margin-top: 10px; color: var(--muted); }
.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; }
.review-grid.home-reviews { grid-template-columns: repeat(5, minmax(0,1fr)); }
.review-card { padding: 24px; }
.review-card blockquote { margin: 0 0 18px; color: var(--text); line-height: 1.8; }
.review-card strong { color: var(--primary); font-size: 14px; }
.notice-panel { padding: clamp(26px, 4vw, 44px); background: linear-gradient(140deg, #fff, #E8F7FF); }
.notice-panel p { margin-top: 13px; color: var(--muted); }
.faq-list { display: grid; gap: 14px; }
.faq-item { overflow: hidden; }
.faq-item summary { cursor: pointer; padding: 20px 24px; color: var(--deep); font-weight: 800; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; float: right; color: var(--primary); font-size: 22px; }
.faq-item[open] summary::after { content: "−"; }
.faq-answer { padding: 0 24px 22px; color: var(--muted); }
.cta-strip { padding: clamp(26px, 4vw, 42px); display: flex; align-items: center; justify-content: space-between; gap: 24px; border-radius: var(--radius); background: linear-gradient(135deg, #155A9D, #1688D8 55%, #35D7FF); box-shadow: var(--shadow); }
.cta-strip h2, .cta-strip p { color: #fff; }
.cta-strip p { margin-top: 8px; opacity: .88; }
.cta-strip .ghost-btn { color: var(--deep); border: 0; }
.category-tabs { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.category-tabs a { padding: 9px 14px; border-radius: 999px; color: var(--deep); background: #fff; border: 1px solid var(--border); font-weight: 700; }
.category-tabs a:hover { color: var(--primary); background: var(--surface-soft); }
.site-footer { color: var(--footer-text); background: var(--footer); }
.footer-inner { width: min(100% - 32px, 1180px); margin-inline: auto; display: grid; grid-template-columns: 1.2fr .8fr; gap: 60px; padding: 58px 0 38px; }
.footer-brand p { max-width: 580px; margin-top: 18px; color: rgba(234,248,255,.78); }
.footer-links { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 26px; }
.footer-links h2 { margin-bottom: 14px; color: #fff; font-size: 17px; }
.footer-links a { display: block; padding: 5px 0; color: rgba(234,248,255,.8); }
.footer-links a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(234,248,255,.15); padding: 20px 16px 28px; text-align: center; color: rgba(234,248,255,.7); font-size: 13px; }
.footer-bottom p + p { margin-top: 4px; }
.legal-page { max-width: 860px; }
.legal-page h2 { margin-top: 34px; font-size: 26px; }
.legal-page p { margin-top: 12px; color: var(--muted); }
.legal-page ul { color: var(--muted); }
@media (max-width: 1180px) {
    .desktop-nav { display: none; }
    .menu-toggle { display: flex; }
    .header-inner { justify-content: space-between; }
    .quick-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
    .review-grid.home-reviews { grid-template-columns: repeat(3, minmax(0,1fr)); }
}
@media (max-width: 860px) {
    body { padding-top: 68px; }
    .site-header { height: 68px; }
    .header-inner { width: min(100% - 24px, 1360px); }
    .main-btn { min-height: 42px; padding-inline: 18px; }
    .brand-logo img { width: 102px; }
    .section { padding: 58px 0; }
    .page-hero { padding: 64px 0 66px; }
    .intro-panel, .split, .info-grid, .footer-inner { grid-template-columns: 1fr; }
    .split.reverse .media { order: 0; }
    .feature-grid, .steps, .review-grid, .review-grid.home-reviews { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .quick-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .carousel-slide img { aspect-ratio: 16 / 8; }
    .footer-inner { gap: 34px; }
}
@media (max-width: 560px) {
    .container, .wide-container { width: min(100% - 24px, 1180px); }
    .header-actions { gap: 7px; }
    .header-actions .main-btn { padding-inline: 15px; }
    .menu-toggle { width: 42px; height: 42px; }
    .carousel-wrap { padding-top: 14px; }
    .carousel-slide img { aspect-ratio: 16 / 10; }
    .carousel-arrow { width: 38px; height: 38px; }
    .carousel-prev { left: 10px; }
    .carousel-next { right: 10px; }
    .carousel-dots { bottom: 10px; }
    .feature-grid, .steps, .review-grid, .review-grid.home-reviews, .quick-grid, .footer-links { grid-template-columns: 1fr; }
    .quick-card { min-height: auto; }
    .cta-strip { align-items: flex-start; flex-direction: column; }
    .hero-actions { flex-direction: column; }
    .hero-actions a { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}