:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --soft: #E8F7FF;
    --primary: #11AEEA;
    --accent: #1688D8;
    --deep: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(17,174,234,0.18);
    --footer: #073A68;
    --footer-text: #EAF8FF;
    --shadow: 0 18px 45px rgba(22, 136, 216, 0.12);
    --shadow-soft: 0 10px 30px rgba(22, 136, 216, 0.09);
    --radius: 24px;
    --radius-small: 16px;
    --container: min(100% - 32px, 1240px);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-width: 320px;
    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;
}
body.drawer-open { overflow: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }

.skip-link {
    position: fixed;
    top: 8px;
    left: 8px;
    z-index: 9999;
    padding: 10px 14px;
    border-radius: 10px;
    background: var(--footer);
    color: white;
    transform: translateY(-150%);
    transition: transform .2s ease;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255,255,255,.96);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(16px);
}
.header-inner {
    width: min(100% - 32px, 1360px);
    min-height: 76px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: clamp(12px, 1.5vw, 24px);
}
.brand-logo { flex: 0 0 auto; display: inline-flex; align-items: center; }
.brand-logo img { width: clamp(112px, 10vw, 154px); max-height: 46px; object-fit: contain; }
.desktop-nav {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(8px, .85vw, 18px);
    overflow: hidden;
}
.desktop-nav a {
    flex: 0 1 auto;
    white-space: nowrap;
    color: var(--text);
    font-size: clamp(12px, .93vw, 15px);
    font-weight: 700;
    transition: color .2s ease, transform .2s ease;
}
.desktop-nav a:hover, .desktop-nav a.active { color: var(--primary); transform: translateY(-1px); }
.header-actions { flex: 0 0 auto; display: flex; align-items: center; gap: 10px; }
.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 24px;
    border: 0;
    border-radius: 999px;
    background: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
    color: #fff;
    font-weight: 800;
    box-shadow: 0 10px 24px rgba(22,136,216,.24);
    transition: transform .2s ease, box-shadow .2s ease;
    white-space: nowrap;
}
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(22,136,216,.3); }
.text-btn { color: var(--accent); font-weight: 800; display: inline-flex; align-items: center; gap: 6px; }
.text-btn::after { content: "→"; transition: transform .2s ease; }
.text-btn:hover::after { transform: translateX(4px); }
.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--surface);
}
.menu-toggle span { display: block; width: 100%; height: 2px; margin: 5px 0; background: var(--accent); border-radius: 2px; }

.drawer-overlay {
    position: fixed;
    inset: 0;
    z-index: 1090;
    background: rgba(7,58,104,.36);
    opacity: 0;
    visibility: hidden;
    transition: opacity .25s ease, visibility .25s ease;
}
.mobile-drawer {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 1100;
    width: min(88vw, 360px);
    height: 100dvh;
    padding: 18px;
    background: var(--surface);
    transform: translateX(105%);
    transition: transform .28s ease;
    overflow-y: auto;
    box-shadow: -18px 0 50px rgba(7,58,104,.18);
}
.drawer-open .drawer-overlay { opacity: 1; visibility: visible; }
.drawer-open .mobile-drawer { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.drawer-logo img { width: 136px; max-height: 44px; object-fit: contain; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 12px; background: var(--soft); color: var(--accent); font-size: 30px; line-height: 1; }
.mobile-nav { display: grid; gap: 4px; padding: 16px 0; }
.mobile-nav a { padding: 11px 14px; border-radius: 12px; font-weight: 700; color: var(--text); }
.mobile-nav a:hover, .mobile-nav a.active { background: var(--soft); color: var(--primary); }
.drawer-register { width: 100%; }

main { min-height: 60vh; }
.section-shell, .section, .page-hero-inner, .footer-inner, .footer-legal { width: var(--container); margin-inline: auto; }
.section { padding: clamp(58px, 7vw, 96px) 0; }
.alt-section { position: relative; }
.alt-section::before {
    content: "";
    position: absolute;
    inset: 0 50%;
    width: 100vw;
    transform: translateX(-50%);
    background: var(--soft);
    z-index: -1;
}

.home-hero { padding: 28px 0 8px; }
.carousel {
    position: relative;
    overflow: hidden;
    border-radius: clamp(18px, 2.2vw, 30px);
    background: linear-gradient(135deg, #eaf9ff, #ffffff);
    box-shadow: var(--shadow);
    aspect-ratio: 16 / 6.3;
    min-height: 260px;
}
.carousel-track, .carousel-slide { position: absolute; inset: 0; }
.carousel-slide { margin: 0; opacity: 0; pointer-events: none; transition: opacity .65s ease; }
.carousel-slide.is-active { opacity: 1; pointer-events: auto; }
.carousel-slide img { width: 100%; height: 100%; object-fit: contain; background: #fff; }
.carousel-arrow {
    position: absolute;
    top: 50%;
    z-index: 5;
    transform: translateY(-50%);
    width: 46px;
    height: 46px;
    border: 1px solid rgba(255,255,255,.7);
    border-radius: 50%;
    background: rgba(7,58,104,.46);
    color: #fff;
    font-size: 34px;
    line-height: 1;
    display: grid;
    place-items: center;
    backdrop-filter: blur(8px);
}
.carousel-arrow.prev { left: 18px; }
.carousel-arrow.next { right: 18px; }
.carousel-dots { position: absolute; left: 50%; bottom: 16px; z-index: 5; transform: translateX(-50%); display: flex; gap: 8px; }
.carousel-dots button { width: 9px; height: 9px; padding: 0; border: 0; border-radius: 50%; background: rgba(255,255,255,.62); box-shadow: 0 0 0 1px rgba(7,58,104,.08); }
.carousel-dots button.is-active { width: 28px; border-radius: 999px; background: #fff; }

.page-hero { position: relative; overflow: hidden; padding: clamp(72px, 9vw, 120px) 0; background: linear-gradient(135deg, #e9f9ff 0%, #f9fdff 55%, #e8f7ff 100%); }
.page-hero::after { content: ""; position: absolute; width: 420px; height: 420px; right: -140px; top: -170px; border-radius: 50%; background: radial-gradient(circle, rgba(53,215,255,.28), rgba(53,215,255,0)); }
.page-hero-inner { position: relative; z-index: 1; max-width: 900px; text-align: center; }
.page-hero h1 { max-width: 780px; margin: 12px auto 18px; font-size: clamp(34px, 5vw, 62px); line-height: 1.18; color: var(--deep); }
.page-hero p { max-width: 760px; margin: 0 auto; color: var(--muted); font-size: clamp(17px, 1.5vw, 20px); }
.page-hero .button-row { justify-content: center; }

.eyebrow { display: inline-flex; align-items: center; min-height: 28px; padding: 0 12px; border-radius: 999px; background: rgba(17,174,234,.10); color: var(--primary); font-size: 13px; font-weight: 800; letter-spacing: .08em; }
h1, h2, h3 { margin-top: 0; line-height: 1.35; }
h1 { color: var(--deep); }
h2 { color: var(--deep); font-size: clamp(28px, 3.3vw, 44px); }
h3 { color: var(--deep); font-size: clamp(19px, 1.8vw, 24px); }
p { margin: 0 0 1em; }
.lead { font-size: clamp(18px, 1.6vw, 21px); color: var(--text); }
.section-heading { max-width: 780px; margin: 0 auto clamp(28px, 4vw, 48px); text-align: center; }
.section-heading h2 { margin: 12px 0 14px; }
.section-heading p { color: var(--muted); font-size: 17px; }
.section-heading.compact { max-width: 900px; }
.button-row { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; margin-top: 28px; }
.centered-action { margin-top: 32px; text-align: center; }

.split-layout { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr); gap: clamp(32px, 6vw, 78px); }
.split-layout.align-center { align-items: center; }
.media-card { margin: 0; padding: clamp(14px, 2vw, 24px); border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow-soft); }
.media-card img { width: 100%; max-height: 520px; object-fit: contain; border-radius: calc(var(--radius) - 8px); }
.phone-media img { max-height: 600px; }

.category-grid, .feature-grid, .review-grid, .notice-grid, .triple-showcase, .timeline-grid, .image-grid { display: grid; gap: clamp(16px, 2vw, 26px); }
.category-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.category-card, .feature-card, .review-card, .notice-card, .showcase-card, .timeline-grid article {
    position: relative;
    overflow: hidden;
    padding: clamp(22px, 2.4vw, 30px);
    border: 1px solid var(--border);
    border-radius: var(--radius-small);
    background: var(--surface);
    box-shadow: var(--shadow-soft);
}
.category-card::before, .feature-card::before { content: ""; position: absolute; left: 0; top: 0; width: 100%; height: 4px; background: linear-gradient(90deg, #35D7FF, #1688D8); }
.category-card h3, .feature-card h3, .notice-card h3, .showcase-card h2 { margin-bottom: 12px; }
.category-card p, .feature-card p, .notice-card p, .showcase-card p { color: var(--muted); }
.category-card a, .feature-card a, .notice-card a, .showcase-card a { color: var(--accent); font-weight: 800; }
.feature-grid.three-columns, .notice-grid, .triple-showcase { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.feature-grid.four-columns, .timeline-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.feature-card .number { display: inline-flex; margin-bottom: 16px; color: var(--primary); font-weight: 900; font-size: 28px; }
.showcase-card { min-height: 330px; display: flex; flex-direction: column; justify-content: flex-end; background: linear-gradient(145deg, #fff 0%, #eefaff 100%); }
.showcase-card .eyebrow { align-self: flex-start; margin-bottom: 14px; }
.showcase-card h2 { font-size: clamp(24px, 2.4vw, 34px); }
.timeline-grid article span { display: grid; place-items: center; width: 42px; height: 42px; margin-bottom: 18px; border-radius: 50%; color: #fff; font-weight: 900; background: linear-gradient(135deg, #35D7FF, #1688D8); }
.review-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.review-card { min-height: 230px; display: flex; flex-direction: column; }
.review-card .review-mark { color: var(--primary); font-size: 48px; line-height: 1; }
.review-card p { flex: 1; color: var(--text); }
.review-card strong { color: var(--accent); }
.notice-card { background: linear-gradient(145deg, #fff, #f6fcff); }
.notice-card h3 { font-size: 20px; }
.compliance-section { padding-top: 0; }

.check-list { margin: 20px 0 28px; padding: 0; list-style: none; }
.check-list li { position: relative; padding: 10px 0 10px 32px; border-bottom: 1px dashed var(--border); }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 10px; display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--soft); color: var(--accent); font-weight: 900; }

.stat-panel { display: grid; gap: 14px; }
.stat-panel div { padding: 22px; border: 1px solid var(--border); border-radius: var(--radius-small); background: rgba(255,255,255,.84); }
.stat-panel strong { display: block; margin-bottom: 6px; color: var(--deep); font-size: 20px; }
.stat-panel span { color: var(--muted); }

.faq-list { display: grid; gap: 14px; max-width: 980px; margin: 0 auto; }
.faq-list details { border: 1px solid var(--border); border-radius: var(--radius-small); background: var(--surface); box-shadow: var(--shadow-soft); overflow: hidden; }
.faq-list summary { position: relative; padding: 20px 56px 20px 22px; color: var(--deep); font-weight: 800; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%); width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; background: var(--soft); color: var(--accent); font-size: 22px; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { padding: 0 22px 22px; margin: 0; color: var(--muted); }
.compact-faq { max-width: 900px; }

.image-grid.three-images { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.image-grid figure { margin: 0; padding: 16px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow-soft); }
.image-grid img { width: 100%; height: 340px; object-fit: contain; border-radius: calc(var(--radius) - 8px); }

.site-footer { margin-top: 30px; background: var(--footer); color: var(--footer-text); }
.footer-inner { padding: clamp(54px, 7vw, 86px) 0 42px; display: grid; grid-template-columns: .9fr 1.5fr; gap: clamp(42px, 7vw, 90px); }
.footer-brand img { width: 150px; max-height: 48px; object-fit: contain; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 460px; margin-top: 20px; color: rgba(234,248,255,.78); }
.footer-links { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 28px; }
.footer-links h2 { margin-bottom: 16px; color: #fff; font-size: 18px; }
.footer-links a { display: block; margin: 9px 0; color: rgba(234,248,255,.76); }
.footer-links a:hover { color: #fff; }
.footer-legal { padding: 22px 0 30px; border-top: 1px solid rgba(234,248,255,.14); display: flex; justify-content: space-between; gap: 20px; color: rgba(234,248,255,.68); font-size: 14px; }
.footer-legal p { margin: 0; }

@media (max-width: 1179px) {
    .desktop-nav { display: none; }
    .menu-toggle { display: inline-block; }
    .header-inner { min-height: 70px; }
    .brand-logo { margin-right: auto; }
    .category-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .review-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
    .split-layout { grid-template-columns: 1fr; }
    .reverse-mobile > figure { order: 2; }
    .reverse-mobile > div { order: 1; }
    .feature-grid.four-columns, .timeline-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .feature-grid.three-columns, .notice-grid, .triple-showcase { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .showcase-card:last-child { grid-column: 1 / -1; min-height: 280px; }
    .footer-inner { grid-template-columns: 1fr; }
    .carousel { aspect-ratio: 16 / 8; min-height: 240px; }
}

@media (max-width: 680px) {
    :root { --container: min(100% - 24px, 1240px); }
    .header-inner { width: min(100% - 20px, 1360px); gap: 8px; }
    .brand-logo img { width: 104px; }
    .header-actions .main-btn { min-height: 40px; padding: 0 17px; }
    .menu-toggle { width: 40px; height: 40px; padding: 8px; }
    .home-hero { padding-top: 16px; }
    .carousel { aspect-ratio: 16 / 9; min-height: 200px; }
    .carousel-arrow { width: 38px; height: 38px; font-size: 28px; }
    .carousel-arrow.prev { left: 10px; }
    .carousel-arrow.next { right: 10px; }
    .carousel-dots { bottom: 10px; }
    .section { padding: 54px 0; }
    .category-grid, .review-grid, .feature-grid.three-columns, .feature-grid.four-columns, .notice-grid, .triple-showcase, .timeline-grid, .image-grid.three-images { grid-template-columns: 1fr; }
    .showcase-card:last-child { grid-column: auto; }
    .showcase-card { min-height: 260px; }
    .review-card { min-height: 190px; }
    .page-hero { padding: 66px 0; }
    .page-hero h1 { font-size: 36px; }
    .page-hero .button-row { flex-direction: column; align-items: stretch; }
    .page-hero .main-btn, .page-hero .text-btn { width: 100%; justify-content: center; }
    .button-row { gap: 14px; }
    .image-grid img { height: 280px; }
    .footer-links { grid-template-columns: 1fr 1fr; }
    .footer-legal { flex-direction: column; }
}

@media (max-width: 420px) {
    .header-actions .main-btn { padding: 0 14px; }
    .carousel { min-height: 180px; }
    .footer-links { grid-template-columns: 1fr; }
    .category-card, .feature-card, .review-card, .notice-card, .showcase-card, .timeline-grid article { padding: 22px; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}