:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --surface-soft: #E8F7FF;
    --primary: #10AEEA;
    --primary-strong: #1688D8;
    --heading: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --line: rgba(16, 174, 234, 0.18);
    --footer: #073A68;
    --footer-text: #EAF8FF;
    --shadow: 0 18px 44px rgba(21, 90, 157, 0.11);
    --shadow-soft: 0 10px 30px rgba(21, 90, 157, 0.08);
    --radius-xl: 28px;
    --radius-lg: 20px;
    --radius-md: 14px;
    --container: min(100% - 32px, 1280px);
    --header-height: 76px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-width: 320px;
    overflow-x: hidden;
    background:
        radial-gradient(circle at 10% 8%, rgba(53, 215, 255, 0.12), transparent 26rem),
        radial-gradient(circle at 92% 14%, rgba(22, 136, 216, 0.09), transparent 30rem),
        var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", 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 { font: inherit; }
button { cursor: pointer; }
.skip-link {
    position: fixed;
    top: 8px;
    left: 8px;
    z-index: 2000;
    transform: translateY(-140%);
    padding: 10px 14px;
    border-radius: 10px;
    background: var(--footer);
    color: #fff;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.94);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(14px);
    box-shadow: 0 6px 22px rgba(21, 90, 157, 0.06);
}
.header-inner {
    width: min(100% - 32px, 1360px);
    height: 100%;
    margin-inline: auto;
    display: flex;
    align-items: center;
    gap: clamp(12px, 1.5vw, 24px);
}
.brand-logo { display: inline-flex; flex: 0 0 auto; align-items: center; }
.brand-logo img { width: clamp(104px, 9vw, 138px); height: 44px; object-fit: contain; }
.desktop-nav {
    flex: 1 1 auto;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(6px, 0.72vw, 13px);
    white-space: nowrap;
}
.desktop-nav a {
    position: relative;
    flex: 0 0 auto;
    padding: 11px 3px;
    color: #38586F;
    font-size: clamp(12px, 0.83vw, 14px);
    font-weight: 650;
    transition: color .2s ease;
}
.desktop-nav a::after {
    content: "";
    position: absolute;
    right: 20%;
    bottom: 4px;
    left: 20%;
    height: 2px;
    border-radius: 999px;
    background: linear-gradient(90deg, #35D7FF, #1688D8);
    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 { display: flex; flex: 0 0 auto; align-items: center; gap: 10px; }
.main-btn, .secondary-btn, .text-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    border-radius: 999px;
    font-weight: 750;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.main-btn {
    padding: 0 22px;
    color: #fff;
    background: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
    box-shadow: 0 10px 22px rgba(22, 136, 216, 0.22);
}
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 26px rgba(22, 136, 216, 0.28); }
.secondary-btn { padding: 0 22px; border: 1px solid var(--line); background: #fff; color: var(--heading); }
.secondary-btn:hover { transform: translateY(-2px); border-color: rgba(16,174,234,.38); }
.text-btn { min-height: 36px; justify-content: flex-start; color: var(--primary-strong); }
.text-btn::after { content: "→"; margin-left: 7px; }
.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid var(--line);
    border-radius: 13px;
    background: #fff;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
}
.menu-toggle span { width: 20px; height: 2px; border-radius: 999px; background: var(--heading); }
.drawer-backdrop {
    position: fixed;
    inset: 0;
    z-index: 1090;
    background: rgba(7, 58, 104, 0.42);
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s ease;
}
.mobile-drawer {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 1100;
    width: min(88vw, 390px);
    padding: 20px;
    overflow-y: auto;
    background: #fff;
    box-shadow: -24px 0 60px rgba(7, 58, 104, 0.2);
    transform: translateX(104%);
    transition: transform .28s ease;
}
.drawer-open .drawer-backdrop { opacity: 1; pointer-events: auto; }
.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(--line); }
.drawer-close { border: 0; background: var(--surface-soft); color: var(--heading); border-radius: 10px; padding: 8px 12px; font-weight: 700; }
.mobile-nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; padding: 20px 0; }
.mobile-nav a { padding: 11px 12px; border: 1px solid var(--line); border-radius: 12px; color: var(--text); background: #fff; font-weight: 650; }
.mobile-nav a:hover { color: var(--primary-strong); background: var(--surface-soft); }
.drawer-register { width: 100%; }

main { min-height: 62vh; }
.container, .section, .page-hero, .carousel-wrap, .compliance-panel { width: var(--container); margin-inline: auto; }
.section { padding: clamp(54px, 7vw, 92px) 0; }
.section + .section { padding-top: 0; }
.section-heading { max-width: 760px; margin-bottom: 28px; }
.section-heading.center { margin-inline: auto; text-align: center; }
.eyebrow {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    margin-bottom: 10px;
    padding: 4px 12px;
    border: 1px solid rgba(16,174,234,.2);
    border-radius: 999px;
    background: rgba(232,247,255,.82);
    color: var(--primary-strong);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .08em;
}
h1, h2, h3 { margin-top: 0; color: var(--heading); line-height: 1.26; }
h1 { margin-bottom: 18px; font-size: clamp(34px, 5vw, 64px); letter-spacing: -.035em; }
h2 { margin-bottom: 14px; font-size: clamp(27px, 3.6vw, 42px); letter-spacing: -.025em; }
h3 { margin-bottom: 10px; font-size: clamp(18px, 2vw, 23px); }
p { margin-top: 0; }
.section-heading p, .hero-copy > p, .page-hero p { color: var(--muted); font-size: clamp(16px, 1.4vw, 18px); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }

.carousel-wrap { padding-top: clamp(22px, 3vw, 38px); }
.carousel {
    position: relative;
    overflow: hidden;
    min-height: 260px;
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    background: linear-gradient(145deg, #eefaff, #fff);
    box-shadow: var(--shadow);
}
.carousel-track { position: relative; width: 100%; aspect-ratio: 16 / 5.7; min-height: 260px; }
.carousel-slide { position: absolute; inset: 0; opacity: 0; pointer-events: none; transition: opacity .55s ease; }
.carousel-slide.is-active { opacity: 1; pointer-events: auto; }
.carousel-slide img { width: 100%; height: 100%; object-fit: contain; }
.carousel-control {
    position: absolute;
    top: 50%;
    z-index: 3;
    width: 46px;
    height: 46px;
    border: 1px solid rgba(255,255,255,.72);
    border-radius: 50%;
    background: rgba(7,58,104,.52);
    color: #fff;
    font-size: 24px;
    transform: translateY(-50%);
    backdrop-filter: blur(8px);
}
.carousel-control.prev { left: 18px; }
.carousel-control.next { right: 18px; }
.carousel-dots { position: absolute; right: 0; bottom: 14px; left: 0; z-index: 3; display: flex; justify-content: center; gap: 8px; }
.carousel-dot { 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,.16); }
.carousel-dot.is-active { width: 26px; border-radius: 999px; background: #fff; }

.hero-band { padding: clamp(56px, 7vw, 96px) 0 42px; }
.hero-grid, .page-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.06fr) minmax(340px, .94fr);
    gap: clamp(28px, 5vw, 68px);
    align-items: center;
}
.hero-media, .page-hero figure, .media-card {
    margin: 0;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    background: #fff;
    box-shadow: var(--shadow-soft);
}
.hero-media img, .page-hero figure img, .media-card img { width: 100%; height: 100%; object-fit: contain; }
.hero-media { min-height: 360px; }
.hero-media img { min-height: 360px; }
.page-hero { padding: clamp(58px, 7vw, 96px) 0; }
.page-hero figure { min-height: 360px; }
.page-hero figure img { min-height: 360px; }
.page-hero.no-media { grid-template-columns: minmax(0, 850px); }

.stat-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-top: 28px; }
.stat-card { padding: 18px; border: 1px solid var(--line); border-radius: var(--radius-md); background: rgba(255,255,255,.86); }
.stat-card strong { display: block; color: var(--primary-strong); font-size: 22px; }
.stat-card span { color: var(--muted); font-size: 14px; }

.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.card-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.info-card, .feature-card, .review-card, .faq-item, .notice-card {
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: rgba(255,255,255,.92);
    box-shadow: var(--shadow-soft);
}
.info-card, .feature-card, .notice-card { padding: 24px; }
.info-card p, .feature-card p, .notice-card p { color: var(--muted); }
.info-card .text-btn, .feature-card .text-btn { margin-top: 8px; }
.card-number {
    display: inline-grid;
    place-items: center;
    width: 38px;
    height: 38px;
    margin-bottom: 16px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(53,215,255,.2), rgba(22,136,216,.18));
    color: var(--primary-strong);
    font-weight: 900;
}

.split-section { display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr); gap: clamp(24px, 4vw, 56px); align-items: center; }
.split-section.reverse { grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); }
.split-section.reverse .media-card { order: 2; }
.media-card { min-height: 320px; }
.media-card img { min-height: 320px; }
.content-stack p { color: var(--muted); }
.check-list { display: grid; gap: 9px; margin: 22px 0 0; padding: 0; list-style: none; }
.check-list li { position: relative; padding-left: 28px; color: var(--text); }
.check-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 1px;
    display: grid;
    place-items: center;
    width: 19px;
    height: 19px;
    border-radius: 50%;
    background: var(--surface-soft);
    color: var(--primary-strong);
    font-size: 12px;
    font-weight: 900;
}

.product-gallery { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.product-tile { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow-soft); }
.product-tile figure { margin: 0; aspect-ratio: 4 / 3; background: linear-gradient(145deg, #effaff, #fff); }
.product-tile img { width: 100%; height: 100%; object-fit: contain; }
.product-tile div { padding: 18px; }
.product-tile p { color: var(--muted); font-size: 15px; }

.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.review-card { display: flex; gap: 15px; padding: 22px; }
.review-card p { margin: 0; color: var(--muted); }
.review-avatar { flex: 0 0 auto; display: grid; place-items: center; width: 42px; height: 42px; border-radius: 50%; background: linear-gradient(135deg, #35D7FF, #1688D8); color: #fff; font-weight: 900; }

.faq-list { display: grid; gap: 14px; }
.faq-item { padding: 22px 24px; }
.faq-item h3 { padding-right: 34px; }
.faq-item p { margin-bottom: 0; color: var(--muted); }

.compliance-panel {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr);
    gap: 28px;
    margin-top: 0;
    margin-bottom: clamp(58px, 8vw, 100px);
    padding: clamp(26px, 4vw, 42px);
    border: 1px solid rgba(16,174,234,.2);
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, rgba(232,247,255,.94), rgba(255,255,255,.96));
    box-shadow: var(--shadow-soft);
}
.compliance-panel p { color: var(--muted); }

.cta-panel {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: clamp(26px, 4vw, 42px);
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, #0D75BD, #10AEEA);
    color: #fff;
    box-shadow: var(--shadow);
}
.cta-panel h2, .cta-panel p { color: #fff; }
.cta-panel p { margin-bottom: 0; opacity: .88; }
.cta-panel .main-btn { background: #fff; color: var(--primary-strong); box-shadow: none; }

.contact-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.contact-card { padding: 24px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow-soft); }
.contact-card p { color: var(--muted); }

.site-footer { margin-top: 0; background: var(--footer); color: var(--footer-text); }
.footer-inner { width: var(--container); margin-inline: auto; display: grid; grid-template-columns: minmax(260px, .85fr) minmax(0, 1.15fr); gap: clamp(36px, 6vw, 90px); padding: 58px 0 40px; }
.footer-brand p { max-width: 520px; margin-top: 18px; color: rgba(234,248,255,.76); }
.footer-logo img { filter: brightness(0) invert(1); }
.footer-links { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.footer-links h2 { margin-bottom: 12px; color: #fff; font-size: 16px; }
.footer-links a { display: block; width: max-content; max-width: 100%; margin: 8px 0; color: rgba(234,248,255,.76); }
.footer-links a:hover { color: #fff; }
.footer-bottom { width: var(--container); margin-inline: auto; display: flex; justify-content: space-between; gap: 24px; padding: 22px 0 30px; border-top: 1px solid rgba(234,248,255,.15); }
.footer-bottom p { margin: 0; color: rgba(234,248,255,.68); font-size: 14px; }

@media (max-width: 1180px) {
    .desktop-nav { display: none; }
    .menu-toggle { display: flex; }
    .header-inner { justify-content: space-between; }
}
@media (max-width: 960px) {
    .hero-grid, .page-hero, .split-section, .split-section.reverse, .compliance-panel { grid-template-columns: 1fr; }
    .split-section.reverse .media-card { order: 0; }
    .card-grid.four, .product-gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-inner { grid-template-columns: 1fr; }
    .hero-media, .hero-media img, .page-hero figure, .page-hero figure img { min-height: 280px; }
}
@media (max-width: 720px) {
    :root { --container: min(100% - 24px, 1280px); --header-height: 68px; }
    .header-inner { width: min(100% - 24px, 1360px); }
    .brand-logo img { width: 100px; height: 38px; }
    .main-btn { padding-inline: 17px; min-height: 42px; }
    .header-actions .main-btn { display: none; }
    .carousel-wrap { width: 100%; padding-top: 12px; }
    .carousel { border-radius: 0 0 22px 22px; border-right: 0; border-left: 0; }
    .carousel-track { aspect-ratio: 16 / 9; min-height: 220px; }
    .carousel-control { width: 40px; height: 40px; font-size: 20px; }
    .carousel-control.prev { left: 10px; }
    .carousel-control.next { right: 10px; }
    .stat-row, .card-grid, .review-grid, .contact-grid { grid-template-columns: 1fr; }
    .product-gallery, .card-grid.four { grid-template-columns: 1fr; }
    .media-card, .media-card img { min-height: 240px; }
    .cta-panel { align-items: flex-start; flex-direction: column; }
    .footer-links { grid-template-columns: 1fr 1fr; }
    .footer-bottom { flex-direction: column; }
}
@media (max-width: 440px) {
    .mobile-nav { grid-template-columns: 1fr; }
    .footer-links { grid-template-columns: 1fr; }
    .carousel-track { min-height: 190px; }
    h1 { font-size: 34px; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { transition-duration: .001ms !important; animation-duration: .001ms !important; animation-iteration-count: 1 !important; }
}