:root {
    --page-bg: #F4FBFF;
    --surface: #FFFFFF;
    --surface-soft: #E8F7FF;
    --primary: #10AEEA;
    --primary-strong: #1688D8;
    --deep-blue: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(16, 174, 234, 0.18);
    --footer: #073A68;
    --footer-text: #EAF8FF;
    --gradient: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
    --shadow: 0 18px 50px rgba(22, 136, 216, 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;
    min-width: 320px;
    overflow-x: hidden;
    color: var(--text);
    background: var(--page-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; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
.skip-link {
    position: fixed;
    left: 18px;
    top: -80px;
    z-index: 3000;
    padding: 10px 16px;
    color: #fff;
    background: var(--deep-blue);
    border-radius: 10px;
}
.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,.96);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 28px rgba(21, 90, 157, .08);
    backdrop-filter: blur(14px);
}
.header-inner {
    width: min(100% - 32px, 1360px);
    height: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: clamp(12px, 1.6vw, 26px);
}
.brand-logo { flex: 0 0 auto; width: clamp(128px, 11vw, 172px); }
.brand-logo img { width: 100%; height: 48px; object-fit: contain; object-position: left center; }
.desktop-nav {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(5px, .62vw, 12px);
    overflow: hidden;
}
.desktop-nav a {
    position: relative;
    flex: 0 0 auto;
    padding: 8px clamp(3px, .35vw, 7px);
    color: #36566F;
    font-size: clamp(12px, .91vw, 15px);
    font-weight: 700;
    white-space: nowrap;
    transition: color .2s ease;
}
.desktop-nav a::after {
    content: "";
    position: absolute;
    left: 18%; right: 18%; bottom: 1px;
    height: 3px;
    border-radius: 999px;
    background: var(--gradient);
    transform: scaleX(0);
    transition: transform .2s ease;
}
.desktop-nav a:hover,
.desktop-nav a.is-active { color: var(--primary-strong); }
.desktop-nav a:hover::after,
.desktop-nav a.is-active::after { transform: scaleX(1); }
.header-actions { flex: 0 0 auto; display: flex; align-items: center; gap: 12px; }
.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 22px;
    border: 0;
    border-radius: 999px;
    color: #fff;
    background: var(--gradient);
    box-shadow: 0 10px 24px rgba(22,136,216,.22);
    font-weight: 800;
    white-space: nowrap;
    transition: transform .2s ease, box-shadow .2s ease;
}
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 28px rgba(22,136,216,.28); }
.menu-toggle {
    display: none;
    width: 44px; height: 44px;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 13px;
    background: var(--surface-soft);
}
.menu-toggle span { display: block; height: 2px; margin: 5px 0; border-radius: 999px; background: var(--deep-blue); }

.mobile-drawer {
    position: fixed;
    top: 0; right: 0; bottom: 0;
    z-index: 1200;
    width: min(88vw, 380px);
    padding: 20px;
    background: #fff;
    box-shadow: -20px 0 60px rgba(7,58,104,.2);
    transform: translateX(105%);
    transition: transform .28s ease;
    overflow-y: auto;
}
.mobile-drawer.is-open { transform: translateX(0); }
.drawer-backdrop { position: fixed; inset: 0; z-index: 1100; background: rgba(7,58,104,.45); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.drawer-logo { width: 150px; }
.drawer-logo img { width: 100%; height: 48px; object-fit: contain; object-position: left center; }
.drawer-close { width: 42px; height: 42px; border: 1px solid var(--border); border-radius: 50%; color: var(--deep-blue); background: var(--surface-soft); font-size: 28px; line-height: 1; }
.drawer-nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; padding: 18px 0; }
.drawer-nav a { padding: 11px 12px; border: 1px solid var(--border); border-radius: 12px; color: #36566F; background: #fff; font-weight: 700; text-align: center; }
.drawer-nav a.is-active { color: var(--primary-strong); background: var(--surface-soft); }
.drawer-register { width: 100%; }

main { padding-top: var(--header-height); }
.container { width: min(100% - 32px, 1240px); margin: 0 auto; }
.section { padding: clamp(54px, 7vw, 92px) 0; }
.section-soft { background: linear-gradient(180deg, rgba(232,247,255,.7), rgba(244,251,255,.3)); }
.section-head { max-width: 800px; margin: 0 auto 34px; text-align: center; }
.section-head.align-left { margin-left: 0; text-align: left; }
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    color: var(--primary-strong);
    font-size: 14px;
    font-weight: 800;
    letter-spacing: .08em;
}
.eyebrow::before { content: ""; width: 28px; height: 3px; border-radius: 999px; background: var(--gradient); }
h1, h2, h3 { margin: 0; color: var(--deep-blue); line-height: 1.25; }
h1 { font-size: clamp(34px, 5vw, 62px); }
h2 { font-size: clamp(27px, 3.4vw, 42px); }
h3 { font-size: clamp(18px, 2vw, 24px); }
p { margin: 0; }
.section-head p { margin-top: 16px; color: var(--muted); font-size: clamp(15px, 1.4vw, 18px); }
.text-link { display: inline-flex; align-items: center; gap: 8px; margin-top: 16px; color: var(--primary-strong); font-weight: 800; }
.text-link::after { content: "→"; transition: transform .2s ease; }
.text-link:hover::after { transform: translateX(4px); }

.home-slider { padding: 24px 0 0; background: linear-gradient(180deg, #fff 0%, var(--page-bg) 100%); }
.slider {
    position: relative;
    width: min(100% - 32px, 1360px);
    margin: 0 auto;
    aspect-ratio: 16 / 6;
    min-height: 260px;
    overflow: hidden;
    border-radius: var(--radius-lg);
    background: var(--surface-soft);
    box-shadow: var(--shadow);
}
.slider-track { position: relative; width: 100%; height: 100%; }
.slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .65s ease, visibility .65s ease; }
.slide.is-active { opacity: 1; visibility: visible; }
.slide img { width: 100%; height: 100%; object-fit: contain; background: var(--surface-soft); }
.slider-arrow {
    position: absolute;
    top: 50%;
    z-index: 4;
    width: 48px; height: 48px;
    border: 1px solid rgba(255,255,255,.75);
    border-radius: 50%;
    color: #fff;
    background: rgba(7,58,104,.48);
    transform: translateY(-50%);
    font-size: 28px;
    line-height: 1;
    backdrop-filter: blur(8px);
}
.slider-arrow:hover { background: rgba(7,58,104,.72); }
.slider-prev { left: 18px; }
.slider-next { right: 18px; }
.slider-dots { position: absolute; left: 50%; bottom: 16px; z-index: 4; display: flex; gap: 9px; transform: translateX(-50%); }
.slider-dot { width: 10px; height: 10px; padding: 0; border: 2px solid #fff; border-radius: 50%; background: rgba(255,255,255,.38); }
.slider-dot.is-active { width: 28px; border-radius: 999px; background: #fff; }

.intro-panel,
.page-hero-card {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(320px, .8fr);
    gap: clamp(28px, 5vw, 70px);
    align-items: center;
    padding: clamp(28px, 5vw, 60px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: linear-gradient(145deg, #fff, #eefaff);
    box-shadow: var(--shadow);
}
.intro-copy p,
.hero-copy p { margin-top: 18px; color: var(--muted); font-size: clamp(16px, 1.5vw, 19px); }
.action-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.secondary-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 20px;
    border: 1px solid var(--border);
    border-radius: 999px;
    color: var(--primary-strong);
    background: #fff;
    font-weight: 800;
}
.intro-visual,
.hero-visual { min-width: 0; }
.intro-visual img,
.hero-visual img,
.split-media img {
    width: 100%;
    max-height: 390px;
    object-fit: contain;
    border-radius: var(--radius-md);
    background: var(--surface-soft);
}
.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.stat-item { padding: 18px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: #fff; text-align: center; }
.stat-item strong { display: block; color: var(--primary-strong); font-size: 24px; }
.stat-item span { color: var(--muted); font-size: 13px; }

.quick-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.quick-card,
.info-card,
.review-card,
.notice-card,
.feature-card {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
    box-shadow: 0 12px 34px rgba(22,136,216,.08);
}
.quick-card { padding: 22px; transition: transform .2s ease, box-shadow .2s ease; }
.quick-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.quick-card h3 { font-size: 19px; }
.quick-card p { min-height: 100px; margin-top: 10px; color: var(--muted); font-size: 14px; }

.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.card-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.info-card { overflow: hidden; }
.card-media { aspect-ratio: 16 / 10; overflow: hidden; background: var(--surface-soft); }
.card-media img { width: 100%; height: 100%; object-fit: contain; }
.card-body { padding: 24px; }
.card-body p { margin-top: 12px; color: var(--muted); }
.card-tag { display: inline-flex; margin-bottom: 12px; padding: 5px 10px; border-radius: 999px; color: var(--primary-strong); background: var(--surface-soft); font-size: 13px; font-weight: 800; }

.split-section { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .88fr); gap: clamp(30px, 5vw, 70px); align-items: center; }
.split-section.reverse .split-media { order: 2; }
.split-copy p { margin-top: 14px; color: var(--muted); }
.bullet-list { display: grid; gap: 12px; margin: 22px 0 0; padding: 0; list-style: none; }
.bullet-list li { position: relative; padding-left: 26px; color: #36566F; }
.bullet-list li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--primary); font-weight: 900; }

.page-hero { padding: clamp(42px, 6vw, 80px) 0 36px; background: radial-gradient(circle at 80% 10%, rgba(53,215,255,.18), transparent 34%), linear-gradient(180deg, #fff, var(--page-bg)); }
.page-hero-card { min-height: 430px; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; color: var(--muted); font-size: 14px; }
.breadcrumbs a { color: var(--primary-strong); font-weight: 700; }
.hero-visual.no-image {
    min-height: 260px;
    display: grid;
    place-items: center;
    padding: 28px;
    border-radius: var(--radius-lg);
    background: linear-gradient(145deg, #dff7ff, #fff);
}
.hero-mark { width: 190px; height: 190px; display: grid; place-items: center; border-radius: 50%; color: #fff; background: var(--gradient); box-shadow: 0 30px 60px rgba(22,136,216,.25); font-size: 64px; font-weight: 900; }

.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.review-card { position: relative; padding: 26px; }
.review-card::before { content: "“"; position: absolute; top: 4px; right: 18px; color: rgba(16,174,234,.18); font-family: Georgia, serif; font-size: 68px; line-height: 1; }
.review-card p { position: relative; color: #3F5A70; }
.review-card strong { display: block; margin-top: 18px; color: var(--primary-strong); }
.review-card span { color: var(--muted); font-size: 13px; }

.notice-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.notice-card { padding: 22px; }
.notice-card h3 { margin-bottom: 10px; font-size: 18px; }
.notice-card p { color: var(--muted); font-size: 14px; }

.faq-list { display: grid; gap: 14px; max-width: 980px; margin: 0 auto; }
.faq-item { border: 1px solid var(--border); border-radius: var(--radius-md); background: #fff; box-shadow: 0 10px 30px rgba(22,136,216,.06); overflow: hidden; }
.faq-item summary { position: relative; padding: 20px 56px 20px 22px; color: var(--deep-blue); font-weight: 800; cursor: pointer; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; position: absolute; right: 22px; top: 50%; transform: translateY(-50%); color: var(--primary-strong); font-size: 26px; }
.faq-item[open] summary::after { content: "−"; }
.faq-answer { padding: 0 22px 22px; color: var(--muted); }

.service-banner { padding: 34px; border-radius: var(--radius-lg); color: #fff; background: var(--gradient); box-shadow: var(--shadow); }
.service-banner h2, .service-banner h3 { color: #fff; }
.service-banner p { margin-top: 12px; color: rgba(255,255,255,.9); }
.service-banner .secondary-btn { margin-top: 20px; color: var(--deep-blue); border-color: rgba(255,255,255,.7); background: #fff; }

.site-footer { color: var(--footer-text); background: var(--footer); }
.footer-inner { width: min(100% - 32px, 1240px); margin: 0 auto; display: grid; grid-template-columns: .9fr 1.4fr; gap: 60px; padding: 60px 0 38px; }
.footer-brand img { width: 172px; height: 50px; object-fit: contain; object-position: left center; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 520px; margin-top: 18px; color: rgba(234,248,255,.78); }
.footer-links { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px; }
.footer-links h2 { margin-bottom: 14px; color: #fff; font-size: 18px; }
.footer-links a { display: block; margin: 8px 0; color: rgba(234,248,255,.78); }
.footer-links a:hover { color: #fff; }
.footer-notice { border-top: 1px solid rgba(255,255,255,.12); border-bottom: 1px solid rgba(255,255,255,.12); }
.footer-notice p { width: min(100% - 32px, 1240px); margin: 0 auto; padding: 20px 0; color: rgba(234,248,255,.72); font-size: 13px; text-align: center; }
.footer-bottom { padding: 18px 16px 24px; color: rgba(234,248,255,.62); font-size: 13px; text-align: center; }

@media (max-width: 1180px) {
    .desktop-nav { display: none; }
    .header-inner { justify-content: space-between; }
    .menu-toggle { display: block; }
    .brand-logo { width: 150px; }
}
@media (max-width: 960px) {
    .quick-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .card-grid, .review-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .card-grid.four, .notice-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .intro-panel, .page-hero-card, .split-section { grid-template-columns: 1fr; }
    .split-section.reverse .split-media { order: initial; }
    .footer-inner { grid-template-columns: 1fr; gap: 36px; }
}
@media (max-width: 680px) {
    :root { --header-height: 68px; }
    .header-inner, .container { width: min(100% - 24px, 1240px); }
    .brand-logo { width: 132px; }
    .brand-logo img { height: 42px; }
    .header-actions { gap: 8px; }
    .header-actions .main-btn { min-height: 40px; padding: 0 17px; font-size: 14px; }
    .menu-toggle { width: 40px; height: 40px; padding: 8px; }
    .home-slider { padding-top: 14px; }
    .slider { width: calc(100% - 24px); min-height: 190px; aspect-ratio: 16 / 8.3; border-radius: 18px; }
    .slider-arrow { width: 40px; height: 40px; font-size: 23px; }
    .slider-prev { left: 10px; }
    .slider-next { right: 10px; }
    .slider-dots { bottom: 10px; }
    .intro-panel, .page-hero-card { padding: 24px; border-radius: 20px; }
    .page-hero-card { min-height: auto; }
    .quick-grid, .card-grid, .card-grid.four, .review-grid, .notice-grid { grid-template-columns: 1fr; }
    .quick-card p { min-height: auto; }
    .stat-grid { grid-template-columns: 1fr; }
    .footer-links { grid-template-columns: 1fr 1fr; }
    .drawer-nav { grid-template-columns: 1fr 1fr; }
    .section { padding: 52px 0; }
}
@media (max-width: 430px) {
    .header-actions .main-btn { padding: 0 14px; }
    .footer-links, .drawer-nav { grid-template-columns: 1fr; }
    .slider { min-height: 170px; }
    .slider-arrow { width: 36px; height: 36px; }
}