:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --soft: #E8F7FF;
    --primary: #10AEEA;
    --blue: #1688D8;
    --deep: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(16, 174, 234, 0.18);
    --shadow: 0 18px 50px rgba(21, 90, 157, 0.10);
    --radius: 22px;
    --max: 1240px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif; color: var(--text); background: var(--bg); line-height: 1.75; overflow-x: hidden; }
body.drawer-open { overflow: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--primary); }
button, input, textarea, select { font: inherit; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 9999; padding: 10px 16px; background: #fff; border-radius: 10px; box-shadow: var(--shadow); }
.skip-link:focus { top: 12px; }
.site-header { position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,.94); backdrop-filter: blur(14px); border-bottom: 1px solid var(--border); }
.header-inner { width: min(100% - 32px, 1360px); min-height: 72px; margin: 0 auto; display: flex; align-items: center; gap: clamp(10px, 1.2vw, 20px); }
.brand-logo { flex: 0 0 auto; display: inline-flex; align-items: center; }
.brand-logo img { width: clamp(92px, 8vw, 124px); max-height: 46px; object-fit: contain; }
.desktop-nav { flex: 1; min-width: 0; display: flex; justify-content: center; align-items: center; gap: clamp(3px, .5vw, 9px); white-space: nowrap; overflow: hidden; }
.desktop-nav a { flex: 0 1 auto; min-width: 0; padding: 8px clamp(4px, .35vw, 7px); border-radius: 9px; font-size: clamp(12px, .86vw, 14px); color: var(--text); line-height: 1.2; white-space: nowrap; }
.desktop-nav a:hover, .desktop-nav a.active { background: var(--soft); color: var(--deep); }
.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 22px; border: 0; border-radius: 999px; color: #fff !important; font-weight: 700; background: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%); box-shadow: 0 10px 24px rgba(22,136,216,.22); white-space: nowrap; }
.main-btn:hover { transform: translateY(-1px); box-shadow: 0 14px 28px rgba(22,136,216,.28); }
.text-btn { display: inline-flex; align-items: center; font-weight: 700; }
.text-btn::after { content: "→"; margin-left: 8px; }
.menu-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--border); border-radius: 12px; background: #fff; align-items: center; justify-content: center; flex-direction: column; gap: 5px; cursor: pointer; }
.menu-toggle span { width: 20px; height: 2px; border-radius: 2px; background: var(--deep); }
.mobile-drawer { position: fixed; top: 0; right: 0; z-index: 1200; width: min(88vw, 360px); height: 100dvh; padding: 20px; background: #fff; box-shadow: -20px 0 60px rgba(21,90,157,.18); transform: translateX(105%); transition: transform .22s ease; overflow-y: auto; }
.mobile-drawer.open { transform: translateX(0); }
.drawer-overlay { position: fixed; inset: 0; z-index: 1100; background: rgba(7,58,104,.35); opacity: 0; transition: opacity .22s ease; }
.drawer-overlay.show { opacity: 1; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.drawer-logo img { width: 110px; max-height: 46px; object-fit: contain; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 12px; background: var(--soft); color: var(--deep); font-size: 28px; cursor: pointer; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.drawer-nav a { padding: 11px 12px; border-radius: 12px; background: var(--bg); color: var(--text); white-space: nowrap; }
.drawer-nav a.active { background: var(--soft); color: var(--deep); font-weight: 700; }
.drawer-register { width: 100%; margin-top: 18px; }
.hero-wrap { width: min(100% - 32px, 1360px); margin: 24px auto 0; }
.hero-slider { position: relative; overflow: hidden; border-radius: 26px; background: var(--soft); box-shadow: var(--shadow); }
.slides { position: relative; aspect-ratio: 16 / 6.4; min-height: 280px; }
.slide { position: absolute; inset: 0; margin: 0; opacity: 0; pointer-events: none; transition: opacity .55s ease; }
.slide.active { opacity: 1; pointer-events: auto; }
.slide img { width: 100%; height: 100%; object-fit: contain; object-position: center; background: var(--soft); }
.slider-arrow { position: absolute; top: 50%; z-index: 3; width: 46px; height: 46px; transform: translateY(-50%); border: 1px solid rgba(255,255,255,.55); border-radius: 50%; background: rgba(7,58,104,.35); color: #fff; font-size: 32px; line-height: 1; cursor: pointer; }
.slider-arrow.prev { left: 18px; }
.slider-arrow.next { right: 18px; }
.slider-dots { position: absolute; left: 50%; bottom: 16px; z-index: 3; display: flex; gap: 8px; transform: translateX(-50%); }
.slider-dots button { width: 10px; height: 10px; padding: 0; border: 0; border-radius: 50%; background: rgba(255,255,255,.55); cursor: pointer; }
.slider-dots button.active { width: 28px; border-radius: 999px; background: #fff; }
.section { width: min(100% - 32px, var(--max)); margin: 0 auto; padding: clamp(56px, 7vw, 96px) 0; }
.soft-section { width: 100%; max-width: none; padding-left: max(16px, calc((100% - var(--max)) / 2)); padding-right: max(16px, calc((100% - var(--max)) / 2)); background: linear-gradient(180deg, rgba(232,247,255,.85), rgba(244,251,255,.65)); }
.section-heading { max-width: 760px; margin-bottom: 30px; }
.split-heading { max-width: none; display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 28px; }
.section-heading h1, .section-heading h2, .page-hero h1, .copy-card h2, .row-copy h2 { margin: 6px 0 12px; line-height: 1.22; color: var(--deep); }
h1 { font-size: clamp(34px, 4vw, 58px); }
h2 { font-size: clamp(26px, 3vw, 40px); }
h3 { margin: 0 0 10px; color: var(--deep); font-size: 20px; line-height: 1.35; }
p { margin: 0 0 14px; color: var(--text); }
.eyebrow { display: inline-block; color: var(--primary); font-size: 13px; font-weight: 800; letter-spacing: .16em; }
.intro-actions { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; padding-bottom: 8px; }
.media-copy-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: clamp(24px, 4vw, 54px); align-items: center; }
.media-card, .copy-card, .info-panel { border-radius: var(--radius); }
.media-card { overflow: hidden; background: #fff; box-shadow: var(--shadow); }
.media-card img { width: 100%; max-height: 520px; object-fit: contain; background: #fff; }
.copy-card { padding: clamp(22px, 3vw, 38px); background: #fff; border: 1px solid var(--border); box-shadow: 0 12px 36px rgba(21,90,157,.07); }
.info-panel { padding: clamp(24px, 3vw, 38px); background: linear-gradient(145deg, #fff, #E8F7FF); border: 1px solid var(--border); }
.quick-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.quick-card { min-width: 0; padding: 22px; border-radius: 18px; background: #fff; border: 1px solid var(--border); box-shadow: 0 10px 26px rgba(21,90,157,.06); }
.quick-card p { color: var(--muted); font-size: 15px; }
.quick-card a { font-weight: 700; }
.feature-grid { display: grid; gap: 22px; }
.feature-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.feature-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.feature-card { overflow: hidden; border-radius: var(--radius); background: #fff; border: 1px solid var(--border); box-shadow: 0 14px 34px rgba(21,90,157,.07); }
.feature-card > img { width: 100%; aspect-ratio: 16 / 10; object-fit: contain; background: #fff; }
.feature-card > div { padding: 24px; }
.feature-card.horizontal { display: grid; grid-template-columns: minmax(160px, .8fr) minmax(0, 1.2fr); align-items: center; }
.feature-card.horizontal > img { height: 100%; aspect-ratio: auto; object-fit: contain; }
.tag { display: inline-flex; padding: 4px 10px; margin-bottom: 10px; border-radius: 999px; background: var(--soft); color: var(--deep); font-size: 12px; font-weight: 700; }
.alternating-list { display: grid; gap: 34px; }
.alternating-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .85fr); gap: clamp(24px, 4vw, 56px); align-items: center; }
.alternating-row.reverse .row-copy { order: 2; }
.alternating-row.reverse .row-media { order: 1; }
.row-copy { padding: 12px 0; }
.row-media { overflow: hidden; border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); }
.row-media img { width: 100%; max-height: 430px; object-fit: contain; }
.inline-links { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 18px; }
.inline-links a { font-weight: 700; }
.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.review-grid blockquote { margin: 0; padding: 24px; border-radius: 18px; background: #fff; border: 1px solid var(--border); box-shadow: 0 10px 28px rgba(21,90,157,.06); }
.review-grid blockquote p { color: var(--text); }
.review-grid cite { color: var(--deep); font-style: normal; font-weight: 700; }
.check-list { margin: 16px 0 0; padding: 0; list-style: none; }
.check-list li { position: relative; padding: 8px 0 8px 30px; border-bottom: 1px dashed var(--border); }
.check-list li:last-child { border-bottom: 0; }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 8px; width: 20px; height: 20px; border-radius: 50%; display: grid; place-items: center; background: var(--soft); color: var(--blue); font-size: 12px; font-weight: 800; }
.faq-list { display: grid; gap: 12px; }
.faq-list details { border-radius: 16px; background: #fff; border: 1px solid var(--border); padding: 0 20px; }
.faq-list summary { padding: 18px 0; cursor: pointer; color: var(--deep); font-weight: 700; }
.faq-list details p { padding: 0 0 18px; color: var(--muted); }
.faq-list.compact { max-width: 900px; }
.faq-list.numbered { max-width: 980px; margin: 0 auto; }
.center-action { margin-top: 24px; }
.final-notice { margin-bottom: 70px; padding: clamp(28px, 4vw, 48px); border-radius: 24px; background: linear-gradient(135deg, #E8F7FF, #FFFFFF); border: 1px solid var(--border); box-shadow: var(--shadow); }
.final-notice h2 { margin-top: 0; color: var(--deep); }
.page-hero { background: linear-gradient(145deg, #E8F7FF 0%, #F4FBFF 55%, #FFFFFF 100%); border-bottom: 1px solid var(--border); }
.page-hero-inner { width: min(100% - 32px, var(--max)); margin: 0 auto; padding: clamp(70px, 8vw, 118px) 0; }
.page-hero-inner p { max-width: 780px; color: var(--muted); font-size: clamp(16px, 1.5vw, 20px); }
.info-grid { display: grid; gap: 18px; }
.info-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.info-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.info-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.info-grid article { padding: 24px; border-radius: 18px; background: #fff; border: 1px solid var(--border); box-shadow: 0 10px 26px rgba(21,90,157,.05); }
.gallery-grid { display: grid; gap: 18px; }
.gallery-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.gallery-grid figure { margin: 0; overflow: hidden; border-radius: 18px; background: #fff; border: 1px solid var(--border); }
.gallery-grid img { width: 100%; aspect-ratio: 4 / 3; object-fit: contain; background: #fff; }
.gallery-grid figcaption { display: grid; gap: 3px; padding: 16px 18px; }
.gallery-grid figcaption span { color: var(--muted); font-size: 14px; }
.step-grid, .service-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.step-grid article, .service-grid article { padding: 24px; border-radius: 18px; background: #fff; border: 1px solid var(--border); }
.step-grid article > span, .service-grid article > span { display: inline-flex; align-items: center; justify-content: center; min-width: 42px; height: 30px; margin-bottom: 14px; border-radius: 999px; background: var(--soft); color: var(--deep); font-weight: 800; }
.number-list { margin: 0; padding-left: 22px; }
.number-list li { margin-bottom: 12px; }
.site-footer { background: #073A68; color: #EAF8FF; }
.footer-inner { width: min(100% - 32px, var(--max)); margin: 0 auto; display: grid; grid-template-columns: 1.2fr .8fr 1fr; gap: 42px; padding: 58px 0 44px; }
.footer-brand img { width: 118px; max-height: 48px; object-fit: contain; margin-bottom: 18px; padding: 6px 10px; border-radius: 10px; background: #FFFFFF; }
.footer-brand p, .footer-notice p { color: #D7EFFF; }
.footer-links { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 18px; align-content: start; }
.footer-links a { color: #EAF8FF; }
.footer-notice strong { display: block; margin-bottom: 10px; color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); padding: 18px 16px; text-align: center; color: #CBEAFF; font-size: 14px; }
@media (max-width: 1180px) {
    .desktop-nav { display: none; }
    .menu-toggle { display: flex; }
    .header-inner { min-height: 68px; }
    .brand-logo { margin-right: auto; }
    .quick-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .gallery-grid.four, .step-grid, .service-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
    .slides { aspect-ratio: 16 / 8.6; min-height: 240px; }
    .split-heading, .media-copy-grid, .alternating-row, .feature-card.horizontal { grid-template-columns: 1fr; }
    .alternating-row.reverse .row-copy, .alternating-row.reverse .row-media { order: initial; }
    .feature-grid.three, .feature-grid.two, .review-grid, .info-grid.three, .info-grid.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .quick-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-inner { grid-template-columns: 1fr 1fr; }
    .footer-notice { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
    .header-inner { width: min(100% - 24px, 1360px); }
    .header-actions .main-btn { min-height: 40px; padding: 0 17px; }
    .hero-wrap { width: 100%; margin-top: 0; }
    .hero-slider { border-radius: 0; box-shadow: none; }
    .slides { min-height: 210px; aspect-ratio: 16 / 10; }
    .slider-arrow { width: 40px; height: 40px; font-size: 28px; }
    .slider-arrow.prev { left: 10px; }
    .slider-arrow.next { right: 10px; }
    .section { width: min(100% - 24px, var(--max)); padding: 50px 0; }
    .soft-section { width: 100%; padding-left: 12px; padding-right: 12px; }
    .page-hero-inner { width: min(100% - 24px, var(--max)); padding: 62px 0; }
    .quick-grid, .feature-grid.three, .feature-grid.two, .review-grid, .info-grid.two, .info-grid.three, .info-grid.four, .gallery-grid.four, .step-grid, .service-grid { grid-template-columns: 1fr; }
    .quick-card, .copy-card, .info-panel, .feature-card > div { padding: 20px; }
    .drawer-nav { grid-template-columns: 1fr 1fr; }
    .footer-inner { grid-template-columns: 1fr; gap: 28px; }
    .footer-notice { grid-column: auto; }
    .footer-links { grid-template-columns: 1fr 1fr; }
    .final-notice { margin-bottom: 40px; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}