:root {
    --bg: #F4FBFF;
    --nav-bg: #FFFFFF;
    --soft-bg: #E8F7FF;
    --card: #FFFFFF;
    --title: #11AEEA;
    --blue: #1688D8;
    --deep: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(17, 174, 234, 0.18);
    --footer: #073A68;
    --footer-text: #EAF8FF;
    --gradient: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
    --shadow: 0 18px 48px rgba(21, 90, 157, 0.12);
    --radius-lg: 28px;
    --radius-md: 20px;
    --radius-sm: 14px;
    --header-height: 78px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    padding-top: var(--header-height);
    overflow-x: hidden;
    background: var(--bg);
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
.skip-link {
    position: fixed;
    left: 16px;
    top: -80px;
    z-index: 2000;
    padding: 10px 16px;
    background: var(--footer);
    color: #fff;
    border-radius: 10px;
    transition: top .2s ease;
}
.skip-link:focus { top: 12px; }
.site-header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 1000;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(14px);
    box-shadow: 0 8px 28px rgba(21, 90, 157, 0.07);
}
.header-inner {
    width: min(100% - 32px, 1360px);
    height: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: clamp(14px, 2vw, 30px);
    min-width: 0;
}
.brand-logo, .drawer-logo, .footer-logo { display: inline-flex; align-items: center; flex: 0 0 auto; }
.brand-logo img { width: clamp(118px, 10vw, 152px); height: 48px; object-fit: contain; }
.desktop-nav {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(8px, 1vw, 18px);
    white-space: nowrap;
}
.desktop-nav a {
    position: relative;
    flex: 0 0 auto;
    color: var(--text);
    font-size: clamp(13px, .86vw, 15px);
    font-weight: 600;
    padding: 10px 0;
    transition: color .2s ease;
}
.desktop-nav a::after {
    content: "";
    position: absolute;
    left: 50%;
    right: 50%;
    bottom: 2px;
    height: 3px;
    border-radius: 3px;
    background: var(--gradient);
    transition: left .2s ease, right .2s ease;
}
.desktop-nav a:hover, .desktop-nav a.is-active { color: var(--blue); }
.desktop-nav a:hover::after, .desktop-nav a.is-active::after { left: 0; right: 0; }
.header-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 24px;
    border: 0;
    border-radius: 999px;
    color: #fff;
    background: var(--gradient);
    font-weight: 700;
    white-space: nowrap;
    box-shadow: 0 10px 24px rgba(22, 136, 216, .24);
    transition: transform .2s ease, box-shadow .2s ease;
}
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(22, 136, 216, .3); }
.text-link { color: var(--blue); font-weight: 700; display: inline-flex; align-items: center; gap: 5px; }
.text-link::after { content: "→"; transition: transform .2s ease; }
.text-link:hover::after { transform: translateX(4px); }
.menu-toggle {
    display: none;
    width: 46px;
    height: 46px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: #fff;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
}
.menu-toggle span { width: 22px; height: 2px; background: var(--deep); border-radius: 2px; }
.drawer-overlay {
    position: fixed;
    inset: 0;
    z-index: 1090;
    background: rgba(7, 58, 104, .42);
}
.mobile-drawer {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 1100;
    width: min(88vw, 380px);
    height: 100dvh;
    padding: 20px;
    background: #fff;
    transform: translateX(105%);
    transition: transform .28s ease;
    box-shadow: -20px 0 50px rgba(7, 58, 104, .18);
    overflow-y: auto;
}
.mobile-drawer.is-open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-bottom: 18px; border-bottom: 1px solid var(--border); }
.drawer-logo img { width: 138px; height: 44px; object-fit: contain; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 50%; background: var(--soft-bg); color: var(--deep); font-size: 30px; line-height: 1; }
.drawer-nav { display: grid; gap: 7px; padding: 18px 0; }
.drawer-nav a { padding: 11px 14px; border-radius: 12px; color: var(--text); font-weight: 650; }
.drawer-nav a:hover, .drawer-nav a.is-active { color: var(--blue); background: var(--soft-bg); }
.drawer-register { width: 100%; }
.container { width: min(100% - 32px, 1240px); margin: 0 auto; }
.section { padding: clamp(56px, 7vw, 92px) 0; }
.section-tight { padding: clamp(38px, 5vw, 62px) 0; }
.section-soft { background: var(--soft-bg); }
.section-title { max-width: 760px; margin-bottom: 30px; }
.section-title.center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow { margin: 0 0 8px; color: var(--blue); font-size: 14px; font-weight: 800; letter-spacing: .14em; }
h1, h2, h3 { margin-top: 0; color: var(--deep); line-height: 1.25; }
h1 { font-size: clamp(34px, 5vw, 64px); margin-bottom: 18px; }
h2 { font-size: clamp(28px, 3.3vw, 44px); margin-bottom: 16px; }
h3 { font-size: clamp(19px, 2vw, 24px); margin-bottom: 10px; }
p { margin-top: 0; }
.lead { color: var(--muted); font-size: clamp(17px, 1.6vw, 20px); }
.hero-slider-wrap { padding: clamp(20px, 3vw, 34px) 0 10px; }
.hero-slider {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, #eaf8ff, #ffffff);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}
.slider-track { position: relative; min-height: clamp(190px, 32vw, 470px); }
.slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .55s ease, visibility .55s ease; }
.slide.is-active { opacity: 1; visibility: visible; }
.slide img { width: 100%; height: 100%; object-fit: contain; object-position: center; background: #eefaff; }
.slider-arrow {
    position: absolute;
    top: 50%;
    z-index: 4;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border: 1px solid rgba(255,255,255,.78);
    border-radius: 50%;
    background: rgba(7,58,104,.58);
    color: #fff;
    font-size: 28px;
    line-height: 1;
    display: grid;
    place-items: center;
}
.slider-arrow:hover { background: rgba(7,58,104,.78); }
.slider-arrow.prev { left: 18px; }
.slider-arrow.next { right: 18px; }
.slider-dots { position: absolute; left: 50%; bottom: 16px; z-index: 4; transform: translateX(-50%); display: flex; gap: 9px; }
.slider-dot { width: 10px; height: 10px; border: 0; border-radius: 50%; padding: 0; background: rgba(255,255,255,.65); box-shadow: 0 0 0 1px rgba(7,58,104,.16); }
.slider-dot.is-active { width: 28px; border-radius: 999px; background: #fff; }
.hero-intro {
    padding: clamp(54px, 6vw, 82px) 0;
    background: radial-gradient(circle at 10% 10%, rgba(53,215,255,.2), transparent 34%), var(--bg);
}
.split { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(28px, 5vw, 64px); align-items: center; }
.split.reverse .media-card { order: 2; }
.split.reverse .content-card { order: 1; }
.content-card { min-width: 0; }
.hero-actions, .inline-actions { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; margin-top: 24px; }
.secondary-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 22px; border-radius: 999px; border: 1px solid var(--border); color: var(--deep); background: #fff; font-weight: 700; }
.secondary-btn:hover { border-color: rgba(22,136,216,.4); color: var(--blue); }
.media-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: clamp(12px, 2vw, 20px); box-shadow: var(--shadow); }
.media-card img { width: 100%; max-height: 520px; object-fit: contain; border-radius: calc(var(--radius-lg) - 9px); background: #f7fcff; }
.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.card-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.info-card, .quick-card, .review-card, .faq-item, .stat-card, .step-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: 0 14px 36px rgba(21, 90, 157, .08);
}
.info-card, .quick-card, .review-card, .stat-card, .step-card { padding: clamp(22px, 3vw, 30px); }
.info-card { display: flex; flex-direction: column; min-height: 100%; }
.info-card p, .quick-card p, .review-card p, .step-card p { color: var(--muted); }
.info-card .text-link { margin-top: auto; }
.quick-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 16px; }
.quick-card { min-height: 210px; display: flex; flex-direction: column; }
.quick-card h3 { color: var(--blue); }
.quick-card .text-link { margin-top: auto; }
.icon-chip { width: 50px; height: 50px; display: grid; place-items: center; margin-bottom: 18px; border-radius: 16px; background: var(--soft-bg); color: var(--blue); font-weight: 900; font-size: 19px; }
.image-feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.image-feature { overflow: hidden; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.image-feature img { width: 100%; height: 260px; object-fit: contain; background: #f4fbff; }
.image-feature .body { padding: 26px; }
.list-check { list-style: none; padding: 0; margin: 22px 0 0; display: grid; gap: 12px; }
.list-check li { position: relative; padding-left: 28px; color: var(--muted); }
.list-check li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--blue); font-weight: 900; }
.notice-box { padding: clamp(24px, 4vw, 38px); border: 1px solid var(--border); border-radius: var(--radius-lg); background: linear-gradient(135deg, #fff 0%, #e8f7ff 100%); box-shadow: var(--shadow); }
.notice-box h2, .notice-box h3 { color: var(--blue); }
.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.review-card { position: relative; }
.review-card::before { content: "“"; position: absolute; top: 5px; right: 20px; color: rgba(17,174,234,.18); font-size: 72px; line-height: 1; font-family: Georgia, serif; }
.review-card strong { color: var(--deep); }
.review-card span { display: block; margin-top: 14px; color: var(--blue); font-size: 14px; font-weight: 700; }
.faq-list { display: grid; gap: 14px; }
.faq-item { overflow: hidden; }
.faq-question { width: 100%; border: 0; background: #fff; color: var(--deep); text-align: left; padding: 21px 24px; font-weight: 750; display: flex; justify-content: space-between; gap: 18px; }
.faq-question::after { content: "+"; flex: 0 0 auto; color: var(--blue); font-size: 24px; }
.faq-item.is-open .faq-question::after { content: "−"; }
.faq-answer { display: none; padding: 0 24px 22px; color: var(--muted); }
.faq-item.is-open .faq-answer { display: block; }
.page-hero { position: relative; overflow: hidden; padding: clamp(62px, 8vw, 110px) 0; background: radial-gradient(circle at 82% 20%, rgba(53,215,255,.28), transparent 26%), linear-gradient(135deg, #eefaff 0%, #ffffff 55%, #e8f7ff 100%); }
.page-hero::after { content: ""; position: absolute; width: 360px; height: 360px; right: -170px; bottom: -220px; border-radius: 50%; border: 52px solid rgba(17,174,234,.09); }
.page-hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(320px, .92fr); gap: clamp(30px, 5vw, 70px); align-items: center; }
.page-hero.no-image .page-hero-inner { grid-template-columns: minmax(0, 820px); }
.hero-copy .lead { max-width: 760px; }
.hero-image { background: rgba(255,255,255,.82); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 16px; box-shadow: var(--shadow); }
.hero-image img { width: 100%; max-height: 390px; object-fit: contain; border-radius: calc(var(--radius-lg) - 8px); }
.stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.stat-card strong { display: block; color: var(--blue); font-size: clamp(25px, 3vw, 38px); line-height: 1.2; }
.stat-card span { color: var(--muted); }
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; counter-reset: step; }
.step-card { counter-increment: step; }
.step-card::before { content: "0" counter(step); display: inline-grid; place-items: center; width: 48px; height: 48px; margin-bottom: 18px; border-radius: 16px; background: var(--gradient); color: #fff; font-weight: 800; }
.tag-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.tag { padding: 8px 13px; border-radius: 999px; background: var(--soft-bg); color: var(--deep); font-size: 14px; font-weight: 700; }
.gallery-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.gallery-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 15px; box-shadow: var(--shadow); }
.gallery-card img { width: 100%; height: 300px; object-fit: contain; border-radius: calc(var(--radius-lg) - 8px); background: #f4fbff; }
.gallery-card .caption { padding: 18px 10px 8px; }
.policy-strip { padding: 24px; border-radius: var(--radius-md); background: var(--footer); color: var(--footer-text); }
.policy-strip h2, .policy-strip h3 { color: #fff; }
.policy-strip p { margin-bottom: 0; color: rgba(234,248,255,.88); }
.site-footer { background: var(--footer); color: var(--footer-text); }
.footer-inner { width: min(100% - 32px, 1240px); margin: 0 auto; padding: 64px 0 42px; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1.75fr); gap: 60px; }
.footer-logo img { width: 154px; height: 54px; object-fit: contain; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 480px; margin: 20px 0 0; color: rgba(234,248,255,.75); }
.footer-links { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px; }
.footer-links h2 { margin-bottom: 15px; color: #fff; font-size: 17px; }
.footer-links a { display: block; margin: 9px 0; color: rgba(234,248,255,.78); }
.footer-links a:hover { color: #fff; }
.footer-notice { border-top: 1px solid rgba(234,248,255,.12); padding: 24px 16px 30px; text-align: center; }
.footer-notice p { max-width: 1040px; margin: 0 auto 8px; color: rgba(234,248,255,.68); font-size: 14px; }
.empty-state { padding: 30px; border-radius: var(--radius-md); background: #fff; border: 1px dashed rgba(17,174,234,.36); color: var(--muted); }
@media (max-width: 1180px) {
    .desktop-nav { display: none; }
    .header-inner { justify-content: space-between; }
    .menu-toggle { display: flex; }
}
@media (max-width: 960px) {
    .quick-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .card-grid, .card-grid.four, .review-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .split, .page-hero-inner, .footer-inner { grid-template-columns: 1fr; }
    .split.reverse .media-card, .split.reverse .content-card { order: initial; }
    .hero-image { max-width: 720px; }
    .image-feature-grid, .gallery-grid { grid-template-columns: 1fr; }
    .steps { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
    :root { --header-height: 68px; }
    body { line-height: 1.7; }
    .header-inner, .container, .footer-inner { width: min(100% - 24px, 1240px); }
    .brand-logo img { width: 112px; height: 42px; }
    .header-actions { gap: 7px; }
    .header-actions > .main-btn { min-height: 40px; padding: 0 17px; }
    .menu-toggle { width: 42px; height: 42px; }
    .hero-slider-wrap { padding-top: 14px; }
    .hero-slider { border-radius: 20px; }
    .slider-track { min-height: clamp(170px, 54vw, 320px); }
    .slider-arrow { width: 40px; height: 40px; font-size: 23px; }
    .slider-arrow.prev { left: 10px; }
    .slider-arrow.next { right: 10px; }
    .slider-dots { bottom: 10px; }
    .quick-grid, .card-grid, .card-grid.two, .card-grid.four, .review-grid, .stats { grid-template-columns: 1fr; }
    .quick-card { min-height: 0; }
    .footer-links { grid-template-columns: 1fr 1fr; }
    .gallery-card img, .image-feature img { height: 220px; }
}
@media (max-width: 440px) {
    .footer-links { grid-template-columns: 1fr; }
    .main-btn, .secondary-btn { width: 100%; }
    .header-actions > .main-btn { width: auto; }
    .hero-actions, .inline-actions { align-items: stretch; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}