:root {
    --page-bg: #F4FBFF;
    --nav-bg: #FFFFFF;
    --soft-bg: #E8F7FF;
    --card-bg: #FFFFFF;
    --primary: #11AEEA;
    --accent: #1688D8;
    --deep-blue: #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 16px 42px rgba(19, 107, 166, 0.12);
    --radius-lg: 28px;
    --radius-md: 18px;
    --radius-sm: 12px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-width: 320px;
    overflow-x: hidden;
    color: var(--text);
    background: var(--page-bg);
    font-family: "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.75;
}
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea { font: inherit; }
.site-header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 1000;
    height: 76px;
    background: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 24px rgba(21, 90, 157, 0.07);
    backdrop-filter: blur(14px);
}
.header-inner {
    width: min(100% - 32px, 1360px);
    height: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: clamp(14px, 2vw, 28px);
}
.brand-logo, .drawer-logo { flex: 0 0 auto; }
.brand-logo img { width: clamp(106px, 9vw, 138px); height: 48px; object-fit: contain; }
.desktop-nav {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(8px, 1.05vw, 18px);
    overflow: hidden;
}
.desktop-nav a {
    position: relative;
    white-space: nowrap;
    font-size: clamp(12px, 0.91vw, 15px);
    color: var(--deep-blue);
    padding: 10px 2px;
    transition: color .25s ease;
}
.desktop-nav a::after {
    content: "";
    position: absolute;
    left: 50%;
    right: 50%;
    bottom: 3px;
    height: 2px;
    border-radius: 99px;
    background: var(--gradient);
    transition: left .25s ease, right .25s ease;
}
.desktop-nav a:hover, .desktop-nav a.active { color: var(--primary); }
.desktop-nav a:hover::after, .desktop-nav a.active::after { left: 0; right: 0; }
.header-actions { flex: 0 0 auto; display: flex; align-items: center; gap: 12px; }
.main-btn, .secondary-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 9px 24px;
    border: 0;
    border-radius: 999px;
    font-weight: 700;
    white-space: nowrap;
    transition: transform .2s ease, box-shadow .2s ease;
}
.main-btn { color: #fff; background: var(--gradient); box-shadow: 0 10px 24px rgba(22, 136, 216, .24); }
.secondary-btn { color: var(--accent); background: #fff; border: 1px solid var(--border); }
.main-btn:hover, .secondary-btn:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(22, 136, 216, .20); }
.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: #fff;
    cursor: pointer;
}
.menu-toggle span { display: block; height: 2px; margin: 5px 0; border-radius: 99px; background: var(--deep-blue); }
.drawer-backdrop {
    position: fixed;
    inset: 0;
    z-index: 1090;
    opacity: 0;
    background: rgba(7, 58, 104, .38);
    transition: opacity .25s ease;
}
.drawer-backdrop.show { opacity: 1; }
.mobile-drawer {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 1100;
    width: min(88vw, 390px);
    height: 100dvh;
    padding: 20px;
    overflow-y: auto;
    background: #fff;
    box-shadow: -20px 0 50px rgba(7, 58, 104, .18);
    transform: translateX(105%);
    transition: transform .28s ease;
}
.mobile-drawer.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 { width: 122px; height: 48px; object-fit: contain; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 50%; background: var(--soft-bg); color: var(--deep-blue); font-size: 28px; cursor: pointer; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; padding: 22px 0; }
.drawer-nav a { padding: 11px 12px; border-radius: 12px; color: var(--deep-blue); background: var(--soft-bg); text-align: center; }
.drawer-nav a.active { color: #fff; background: var(--gradient); }
.drawer-register { width: 100%; }
main { padding-top: 76px; }
.container { width: min(100% - 32px, 1220px); margin-inline: auto; }
.wide-container { width: min(100% - 32px, 1360px); margin-inline: auto; }
.section { padding: clamp(54px, 7vw, 94px) 0; }
.section.compact { padding: clamp(40px, 5vw, 66px) 0; }
.section-soft { background: var(--soft-bg); }
.section-title { max-width: 780px; margin: 0 auto 34px; text-align: center; }
.section-title.left { margin-left: 0; text-align: left; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 10px; color: var(--accent); font-weight: 700; letter-spacing: .04em; }
.eyebrow::before { content: ""; width: 24px; height: 3px; border-radius: 99px; background: var(--gradient); }
h1, h2, h3 { margin: 0 0 14px; color: var(--deep-blue); line-height: 1.28; }
h1 { font-size: clamp(32px, 4.8vw, 58px); }
h2 { font-size: clamp(26px, 3.2vw, 40px); }
h3 { font-size: clamp(19px, 2vw, 24px); }
p { margin: 0 0 16px; }
.lead { font-size: clamp(17px, 1.6vw, 21px); color: var(--muted); }
.hero-page { padding: clamp(68px, 8vw, 112px) 0; background: radial-gradient(circle at 80% 20%, rgba(53, 215, 255, .22), transparent 30%), linear-gradient(145deg, #f8fdff 0%, #e9f8ff 100%); }
.hero-grid, .split { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: clamp(30px, 5vw, 68px); align-items: center; }
.hero-copy p { max-width: 680px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero-media, .content-media { position: relative; padding: 12px; border: 1px solid var(--border); border-radius: var(--radius-lg); background: rgba(255,255,255,.72); box-shadow: var(--shadow); }
.hero-media img, .content-media img { width: 100%; max-height: 470px; object-fit: contain; border-radius: calc(var(--radius-lg) - 10px); background: #fff; }
.carousel-section { padding: 26px 0 0; }
.carousel {
    position: relative;
    aspect-ratio: 16 / 5.2;
    min-height: 260px;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--soft-bg);
    box-shadow: var(--shadow);
}
.carousel-track { position: relative; width: 100%; height: 100%; }
.carousel-slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .55s ease; }
.carousel-slide.active { opacity: 1; visibility: visible; }
.carousel-slide img { width: 100%; height: 100%; object-fit: contain; background: #fff; }
.carousel-arrow {
    position: absolute;
    top: 50%;
    z-index: 3;
    width: 44px;
    height: 44px;
    border: 1px solid rgba(255,255,255,.75);
    border-radius: 50%;
    color: var(--deep-blue);
    background: rgba(255,255,255,.88);
    box-shadow: 0 8px 20px rgba(21,90,157,.16);
    transform: translateY(-50%);
    cursor: pointer;
}
.carousel-arrow.prev { left: 16px; }
.carousel-arrow.next { right: 16px; }
.carousel-dots { position: absolute; left: 50%; bottom: 14px; z-index: 3; 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,.72); box-shadow: 0 0 0 1px rgba(21,90,157,.18); cursor: pointer; }
.carousel-dot.active { width: 25px; border-radius: 99px; background: var(--primary); }
.grid-2, .grid-3, .grid-4, .quick-grid, .review-grid, .faq-grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.grid-4, .quick-grid { grid-template-columns: repeat(4, minmax(0,1fr)); }
.card, .quick-card, .review-card, .notice-card, .faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--card-bg);
    box-shadow: 0 12px 32px rgba(19,107,166,.08);
}
.card { padding: clamp(22px, 3vw, 32px); }
.card p:last-child, .quick-card p:last-child, .review-card p:last-child { margin-bottom: 0; }
.card-link, .text-link { display: inline-flex; align-items: center; gap: 7px; margin-top: 8px; color: var(--accent); font-weight: 700; }
.card-link::after, .text-link::after { content: "→"; transition: transform .2s ease; }
.card-link:hover::after, .text-link:hover::after { transform: translateX(4px); }
.quick-card { min-height: 220px; padding: 24px; display: flex; flex-direction: column; }
.quick-card p { color: var(--muted); }
.quick-card .text-link { margin-top: auto; }
.info-list { display: grid; gap: 14px; margin: 0; padding: 0; list-style: none; }
.info-list li { position: relative; padding: 14px 16px 14px 48px; border-radius: 14px; background: #fff; border: 1px solid var(--border); }
.info-list li::before { content: "✓"; position: absolute; left: 16px; top: 14px; display: grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; color: #fff; background: var(--gradient); font-size: 13px; font-weight: 700; }
.media-card { overflow: hidden; padding: 0; }
.media-card img { width: 100%; height: 230px; object-fit: contain; background: var(--soft-bg); }
.media-card .card-body { padding: 24px; }
.review-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
.review-card { padding: 24px; }
.review-card strong { display: block; margin-bottom: 10px; color: var(--accent); }
.review-card p { color: var(--muted); }
.notice-card { padding: clamp(24px, 3vw, 36px); background: linear-gradient(135deg, #ffffff 0%, #eefaff 100%); }
.notice-card strong { color: var(--deep-blue); }
.badge-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.badge { padding: 8px 13px; border-radius: 999px; color: var(--deep-blue); background: var(--soft-bg); border: 1px solid var(--border); font-size: 14px; }
.faq-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
.faq-item { padding: 24px; }
.faq-item h3 { font-size: 19px; }
.faq-item p { color: var(--muted); }
.cta-band { padding: clamp(28px, 4vw, 44px); border-radius: var(--radius-lg); color: #fff; background: linear-gradient(135deg, #11AEEA 0%, #155A9D 100%); box-shadow: var(--shadow); }
.cta-band h2, .cta-band h3 { color: #fff; }
.cta-band p { color: rgba(255,255,255,.86); }
.cta-row { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.cta-band .secondary-btn { border-color: rgba(255,255,255,.4); }
.service-steps { counter-reset: step; display: grid; gap: 16px; }
.service-step { position: relative; padding: 20px 20px 20px 70px; border-radius: var(--radius-md); background: #fff; border: 1px solid var(--border); }
.service-step::before { counter-increment: step; content: counter(step); position: absolute; left: 20px; top: 20px; width: 34px; height: 34px; display: grid; place-items: center; border-radius: 50%; color: #fff; background: var(--gradient); font-weight: 800; }
.site-footer { color: var(--footer-text); background: var(--footer); }
.footer-inner { width: min(100% - 32px, 1220px); margin: 0 auto; padding: 56px 0 36px; display: grid; grid-template-columns: minmax(0,1.2fr) minmax(0,1fr); gap: 60px; }
.footer-brand img { width: 130px; height: 52px; object-fit: contain; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 560px; margin-top: 18px; color: rgba(234,248,255,.78); }
.footer-links { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 24px; }
.footer-links h2 { margin-bottom: 14px; color: #fff; font-size: 17px; }
.footer-links a { display: block; margin: 8px 0; color: rgba(234,248,255,.78); }
.footer-links a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(234,248,255,.14); padding: 18px 16px; display: flex; justify-content: center; gap: 24px 50px; flex-wrap: wrap; text-align: center; color: rgba(234,248,255,.7); font-size: 14px; }
@media (max-width: 1179px) {
    .desktop-nav { display: none; }
    .menu-toggle { display: block; }
    .header-inner { justify-content: space-between; }
}
@media (max-width: 900px) {
    .hero-grid, .split, .footer-inner { grid-template-columns: 1fr; }
    .grid-4, .quick-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .grid-3, .review-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .footer-inner { gap: 34px; }
    .carousel { aspect-ratio: 16 / 7.2; }
}
@media (max-width: 640px) {
    .site-header { height: 68px; }
    main { padding-top: 68px; }
    .header-inner { width: min(100% - 20px, 1360px); }
    .brand-logo img { width: 104px; height: 42px; }
    .main-btn { min-height: 40px; padding: 8px 18px; }
    .header-actions .main-btn { padding-inline: 16px; }
    .carousel-section { padding-top: 16px; }
    .carousel { min-height: 185px; aspect-ratio: 16 / 9.2; border-radius: 18px; }
    .carousel-arrow { width: 38px; height: 38px; }
    .carousel-arrow.prev { left: 10px; }
    .carousel-arrow.next { right: 10px; }
    .section { padding: 48px 0; }
    .section-title { margin-bottom: 26px; }
    .grid-2, .grid-3, .grid-4, .quick-grid, .review-grid, .faq-grid { grid-template-columns: 1fr; }
    .quick-card { min-height: 0; }
    .cta-row { align-items: flex-start; flex-direction: column; }
    .footer-links { grid-template-columns: 1fr 1fr; }
    .drawer-nav { grid-template-columns: 1fr; }
}