:root {
    --page-bg: #F4FBFF;
    --nav-bg: #FFFFFF;
    --soft-bg: #E8F7FF;
    --card-bg: #FFFFFF;
    --title: #11AEEA;
    --blue: #1688D8;
    --deep-blue: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(17, 174, 234, 0.18);
    --gradient: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
    --footer: #073A68;
    --footer-text: #EAF8FF;
    --shadow: 0 18px 46px rgba(21, 90, 157, 0.10);
    --radius: 22px;
    --header-height: 78px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    padding-top: var(--header-height);
    overflow-x: hidden;
    background: var(--page-bg);
    color: var(--text);
    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: 16px;
    top: -80px;
    z-index: 2000;
    padding: 10px 16px;
    border-radius: 10px;
    background: var(--deep-blue);
    color: #fff;
    transition: top .2s ease;
}
.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, 0.96);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 26px rgba(21, 90, 157, 0.06);
    backdrop-filter: blur(12px);
}
.header-inner {
    width: min(100% - 32px, 1360px);
    height: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: clamp(14px, 1.6vw, 26px);
}
.brand-logo { flex: 0 0 auto; display: inline-flex; align-items: center; }
.brand-logo img { width: clamp(112px, 9vw, 148px); max-height: 48px; object-fit: contain; }
.desktop-nav {
    min-width: 0;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(8px, .85vw, 15px);
    white-space: nowrap;
}
.desktop-nav a {
    position: relative;
    padding: 10px 2px;
    color: var(--text);
    font-size: clamp(13px, .9vw, 15px);
    font-weight: 600;
    transition: color .2s ease;
}
.desktop-nav a::after {
    content: "";
    position: absolute;
    left: 50%;
    right: 50%;
    bottom: 4px;
    height: 2px;
    border-radius: 2px;
    background: var(--gradient);
    transition: left .2s ease, right .2s ease;
}
.desktop-nav a:hover, .desktop-nav a.active { color: var(--blue); }
.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: 10px; }
.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 92px;
    min-height: 42px;
    padding: 10px 22px;
    border: 0;
    border-radius: 999px;
    background: var(--gradient);
    color: #fff;
    font-weight: 700;
    box-shadow: 0 10px 24px rgba(22, 136, 216, .23);
    transition: transform .2s ease, box-shadow .2s ease;
}
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(22, 136, 216, .30); }
.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 13px;
    background: #fff;
}
.menu-toggle span { display: block; height: 2px; margin: 5px 0; border-radius: 2px; background: var(--deep-blue); }

.drawer-backdrop {
    position: fixed;
    inset: 0;
    z-index: 1090;
    background: rgba(7, 58, 104, .46);
}
.mobile-drawer {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 1100;
    width: min(88vw, 390px);
    height: 100dvh;
    padding: 18px;
    overflow-y: auto;
    background: #fff;
    box-shadow: -18px 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; gap: 16px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.drawer-logo img { width: 126px; max-height: 44px; object-fit: contain; }
.drawer-close { width: 42px; height: 42px; border: 1px solid var(--border); border-radius: 12px; background: var(--soft-bg); color: var(--deep-blue); font-size: 28px; line-height: 1; }
.drawer-nav { display: grid; gap: 6px; padding: 18px 0; }
.drawer-nav a { padding: 12px 14px; border-radius: 12px; color: var(--text); font-weight: 600; }
.drawer-nav a:hover, .drawer-nav a.active { background: var(--soft-bg); color: var(--blue); }
.drawer-register { width: 100%; }

.container { width: min(100% - 32px, 1240px); margin: 0 auto; }
.section { padding: clamp(54px, 7vw, 94px) 0; }
.section-sm { padding: clamp(36px, 5vw, 64px) 0; }
.section-soft { background: var(--soft-bg); }
.section-dark { background: var(--footer); color: var(--footer-text); }
.section-head { max-width: 780px; margin: 0 auto 34px; text-align: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 10px; color: var(--blue); font-weight: 700; letter-spacing: .08em; }
.eyebrow::before { content: ""; width: 26px; height: 2px; border-radius: 2px; background: var(--gradient); }
h1, h2, h3 { margin: 0 0 16px; color: var(--deep-blue); line-height: 1.25; }
h1 { font-size: clamp(32px, 5vw, 58px); }
h2 { font-size: clamp(26px, 3vw, 38px); }
h3 { font-size: clamp(19px, 1.7vw, 24px); }
p { margin: 0 0 16px; }
.lead { font-size: clamp(17px, 1.6vw, 21px); color: var(--muted); }
.muted { color: var(--muted); }
.text-link { display: inline-flex; align-items: center; gap: 7px; color: var(--blue); font-weight: 700; }
.text-link::after { content: "→"; transition: transform .2s ease; }
.text-link:hover::after { transform: translateX(4px); }

.page-hero {
    position: relative;
    overflow: hidden;
    padding: clamp(64px, 8vw, 112px) 0;
    background: radial-gradient(circle at 88% 20%, rgba(53, 215, 255, .28), transparent 34%), linear-gradient(135deg, #F7FDFF 0%, #E8F7FF 100%);
    border-bottom: 1px solid var(--border);
}
.page-hero::after { content: ""; position: absolute; width: 260px; height: 260px; right: -80px; bottom: -120px; border-radius: 50%; border: 42px solid rgba(17, 174, 234, .08); }
.page-hero .container { position: relative; z-index: 1; }
.hero-copy { max-width: 820px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.secondary-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 42px; padding: 10px 20px; border: 1px solid rgba(22, 136, 216, .28); border-radius: 999px; background: #fff; color: var(--blue); font-weight: 700; }

.carousel-wrap { padding: 24px 0 0; }
.carousel {
    position: relative;
    width: min(100% - 32px, 1360px);
    margin: 0 auto;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: clamp(18px, 2vw, 30px);
    background: #DFF4FF;
    box-shadow: var(--shadow);
}
.carousel-track { position: relative; }
.carousel-slide { display: none; }
.carousel-slide.active { display: block; }
.carousel-slide img { width: 100%; height: auto; max-height: 640px; object-fit: contain; background: #DFF4FF; }
.carousel-arrow {
    position: absolute;
    top: 50%;
    z-index: 2;
    width: 48px;
    height: 48px;
    border: 1px solid rgba(255,255,255,.62);
    border-radius: 50%;
    background: rgba(7, 58, 104, .42);
    color: #fff;
    font-size: 28px;
    line-height: 1;
    transform: translateY(-50%);
    backdrop-filter: blur(6px);
}
.carousel-arrow.prev { left: 18px; }
.carousel-arrow.next { right: 18px; }
.carousel-dots { position: absolute; left: 50%; bottom: 16px; z-index: 2; display: flex; gap: 9px; transform: translateX(-50%); }
.carousel-dot { width: 10px; height: 10px; padding: 0; border: 1px solid rgba(255,255,255,.8); border-radius: 50%; background: rgba(255,255,255,.54); }
.carousel-dot.active { width: 28px; border-radius: 999px; background: #fff; }

.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.card {
    height: 100%;
    padding: clamp(22px, 2.5vw, 32px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--card-bg);
    box-shadow: 0 12px 34px rgba(21, 90, 157, .07);
}
.card p:last-child { margin-bottom: 0; }
.card-label { display: inline-flex; margin-bottom: 14px; padding: 5px 11px; border-radius: 999px; background: var(--soft-bg); color: var(--blue); font-size: 14px; font-weight: 700; }
.feature-card { position: relative; overflow: hidden; }
.feature-card::after { content: ""; position: absolute; width: 90px; height: 90px; right: -34px; bottom: -34px; border-radius: 50%; background: rgba(53, 215, 255, .11); }
.number { display: inline-flex; align-items: center; justify-content: center; width: 42px; height: 42px; margin-bottom: 18px; border-radius: 14px; background: var(--gradient); color: #fff; font-weight: 800; }
.media-panel { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr); gap: clamp(26px, 5vw, 64px); align-items: center; }
.media-panel.reverse { grid-template-columns: minmax(320px, .95fr) minmax(0, 1.05fr); }
.media-panel.reverse .media-image { order: -1; }
.media-image { overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); }
.media-image img { width: 100%; max-height: 540px; object-fit: contain; }
.check-list { display: grid; gap: 12px; margin: 22px 0 0; padding: 0; list-style: none; }
.check-list li { position: relative; padding-left: 28px; }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--blue); font-weight: 800; }
.pill-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.pill { padding: 8px 13px; border: 1px solid var(--border); border-radius: 999px; background: #fff; color: var(--deep-blue); font-size: 14px; font-weight: 700; }
.notice { padding: 24px 26px; border: 1px solid rgba(22, 136, 216, .22); border-left: 4px solid var(--blue); border-radius: 16px; background: #fff; }
.notice strong { color: var(--deep-blue); }
.review-card { position: relative; padding-top: 54px; }
.review-card::before { content: "“"; position: absolute; left: 24px; top: 10px; color: rgba(17, 174, 234, .28); font-size: 58px; line-height: 1; font-family: Georgia, serif; }
.review-role { display: block; margin-top: 18px; color: var(--blue); font-weight: 700; }
.faq-list { display: grid; gap: 14px; }
details { border: 1px solid var(--border); border-radius: 16px; background: #fff; box-shadow: 0 8px 24px rgba(21, 90, 157, .05); }
summary { position: relative; padding: 20px 54px 20px 22px; color: var(--deep-blue); font-weight: 700; cursor: pointer; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 20px; top: 50%; color: var(--blue); font-size: 24px; transform: translateY(-50%); }
details[open] summary::after { content: "−"; }
.faq-answer { padding: 0 22px 22px; color: var(--muted); }
.cta-band { display: flex; align-items: center; justify-content: space-between; gap: 28px; padding: clamp(28px, 4vw, 46px); border-radius: var(--radius); background: linear-gradient(135deg, #E8F7FF 0%, #FFFFFF 100%); border: 1px solid var(--border); box-shadow: var(--shadow); }
.cta-band h2 { margin-bottom: 8px; }

.site-footer { background: var(--footer); color: var(--footer-text); }
.footer-inner { width: min(100% - 32px, 1240px); margin: 0 auto; padding: 58px 0 36px; display: grid; grid-template-columns: 1.6fr .7fr .7fr; gap: 40px; }
.footer-logo { display: inline-flex; padding: 10px 14px; border-radius: 14px; background: #fff; }
.footer-logo img { width: 132px; max-height: 46px; object-fit: contain; }
.footer-brand p { max-width: 540px; margin: 20px 0 0; color: rgba(234, 248, 255, .82); }
.footer-links { display: grid; align-content: start; gap: 8px; }
.footer-links h2 { margin-bottom: 8px; color: #fff; font-size: 18px; }
.footer-links a { color: rgba(234, 248, 255, .82); }
.footer-links a:hover { color: #fff; }
.footer-bottom { width: min(100% - 32px, 1240px); margin: 0 auto; padding: 24px 0 30px; border-top: 1px solid rgba(234, 248, 255, .15); color: rgba(234, 248, 255, .70); font-size: 14px; }
.footer-bottom p { margin: 0 0 6px; }

@media (max-width: 1179px) {
    .desktop-nav { display: none; }
    .menu-toggle { display: block; }
    .header-inner { justify-content: space-between; }
}
@media (max-width: 900px) {
    .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .media-panel, .media-panel.reverse { grid-template-columns: 1fr; }
    .media-panel.reverse .media-image { order: 0; }
    .footer-inner { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
    :root { --header-height: 68px; }
    body { font-size: 15px; }
    .header-inner, .container, .carousel, .footer-inner, .footer-bottom { width: min(100% - 24px, 1240px); }
    .brand-logo img { width: 106px; }
    .main-btn { min-width: 76px; min-height: 40px; padding: 9px 16px; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .carousel-wrap { padding-top: 12px; }
    .carousel-arrow { width: 40px; height: 40px; font-size: 23px; }
    .carousel-arrow.prev { left: 10px; }
    .carousel-arrow.next { right: 10px; }
    .carousel-dots { bottom: 10px; }
    .cta-band { align-items: flex-start; flex-direction: column; }
    .footer-inner { grid-template-columns: 1fr; }
    .footer-brand { grid-column: auto; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}