:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --surface-soft: #E8F7FF;
    --primary: #11AEEA;
    --primary-strong: #1688D8;
    --heading: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(17, 174, 234, 0.18);
    --footer: #073A68;
    --footer-text: #EAF8FF;
    --gradient: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
    --shadow: 0 18px 45px rgba(21, 90, 157, 0.12);
    --shadow-soft: 0 10px 28px rgba(21, 90, 157, 0.09);
    --radius-lg: 28px;
    --radius-md: 20px;
    --radius-sm: 14px;
    --header-height: 76px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-width: 0;
    overflow-x: hidden;
    background: var(--bg);
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }

.skip-link {
    position: fixed;
    left: 16px;
    top: -60px;
    z-index: 2000;
    padding: 10px 16px;
    border-radius: 10px;
    background: var(--primary-strong);
    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,.96);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 24px rgba(21, 90, 157, 0.07);
    backdrop-filter: blur(14px);
}
.header-inner {
    width: min(100% - 32px, 1360px);
    height: 100%;
    margin-inline: auto;
    display: flex;
    align-items: center;
    gap: clamp(14px, 2vw, 30px);
    min-width: 0;
}
.brand-logo { flex: 0 0 auto; display: inline-flex; align-items: center; }
.brand-logo img { width: clamp(112px, 10vw, 154px); max-height: 48px; object-fit: contain; }
.desktop-nav {
    flex: 1 1 auto;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(8px, .95vw, 18px);
    overflow: hidden;
}
.desktop-nav a {
    position: relative;
    flex: 0 1 auto;
    white-space: nowrap;
    color: var(--text);
    font-size: clamp(13px, .92vw, 15px);
    font-weight: 600;
    padding: 10px 2px;
    transition: color .2s ease;
}
.desktop-nav a::after {
    content: "";
    position: absolute;
    left: 50%; right: 50%; bottom: 2px;
    height: 3px;
    border-radius: 999px;
    background: var(--gradient);
    transition: left .2s ease, right .2s ease;
}
.desktop-nav a:hover, .desktop-nav a.active { color: var(--primary-strong); }
.desktop-nav a:hover::after, .desktop-nav a.active::after { left: 8%; right: 8%; }
.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: var(--gradient);
    color: #fff;
    font-weight: 700;
    white-space: nowrap;
    box-shadow: 0 10px 24px rgba(22, 136, 216, 0.24);
    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: 46px;
    height: 46px;
    padding: 11px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: #fff;
}
.menu-toggle span { display: block; height: 2px; margin: 5px 0; border-radius: 999px; background: var(--heading); }

.site-main { padding-top: var(--header-height); }
.container { width: min(100% - 32px, 1200px); margin-inline: auto; }
.wide-container { width: min(100% - 32px, 1360px); margin-inline: auto; }
.section { padding: clamp(58px, 7vw, 96px) 0; }
.section-sm { padding: clamp(40px, 5vw, 70px) 0; }
.section-soft { background: var(--surface-soft); }
.section-white { background: var(--surface); }
.section-heading { max-width: 780px; margin-bottom: 30px; }
.section-heading.center { margin-inline: auto; text-align: center; }
.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 0 14px; color: var(--heading); line-height: 1.3; }
h1 { font-size: clamp(34px, 5vw, 62px); }
h2 { font-size: clamp(27px, 3.6vw, 42px); }
h3 { font-size: clamp(19px, 2vw, 24px); }
p { margin: 0 0 16px; }
.lead { color: var(--muted); font-size: clamp(17px, 2vw, 20px); }
.text-link { color: var(--primary-strong); font-weight: 700; }
.text-link:hover { text-decoration: underline; }

.page-hero { padding: clamp(64px, 8vw, 112px) 0 clamp(46px, 6vw, 78px); background: linear-gradient(150deg, #eefbff 0%, #ffffff 55%, #e5f7ff 100%); }
.page-hero-inner { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(300px, .9fr); gap: clamp(30px, 5vw, 70px); align-items: center; }
.page-hero-copy { max-width: 720px; }
.page-hero-copy p { color: var(--muted); font-size: clamp(17px, 2vw, 20px); }
.hero-actions { 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 22px; border-radius: 999px;
    border: 1px solid var(--border); background: #fff; color: var(--heading); font-weight: 700;
}
.hero-image { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow); padding: clamp(12px, 2vw, 20px); }
.hero-image img { width: 100%; max-height: 440px; object-fit: contain; border-radius: calc(var(--radius-lg) - 8px); }

.carousel-section { padding: 24px 0 0; }
.carousel {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    background: #dff5ff;
    box-shadow: var(--shadow);
    aspect-ratio: 16 / 6.6;
}
.carousel-track { height: 100%; display: flex; transition: transform .55s cubic-bezier(.22,.61,.36,1); }
.carousel-slide { min-width: 100%; height: 100%; }
.carousel-slide img { width: 100%; height: 100%; object-fit: contain; background: #eaf8ff; }
.carousel-control {
    position: absolute; top: 50%; transform: translateY(-50%); z-index: 3;
    width: 44px; height: 44px; border: 0; border-radius: 50%;
    background: rgba(255,255,255,.88); color: var(--heading); font-size: 28px; line-height: 1;
    box-shadow: 0 8px 20px rgba(7,58,104,.16);
}
.carousel-control:hover { background: #fff; }
.carousel-prev { left: 18px; }
.carousel-next { right: 18px; }
.carousel-dots { position: absolute; left: 50%; bottom: 16px; transform: translateX(-50%); z-index: 3; display: flex; gap: 9px; }
.carousel-dot { width: 10px; height: 10px; padding: 0; border: 0; border-radius: 50%; background: rgba(255,255,255,.65); box-shadow: 0 0 0 1px rgba(7,58,104,.15); }
.carousel-dot.active { width: 26px; border-radius: 999px; background: var(--primary); }

.intro-panel {
    display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(280px, .85fr); gap: 34px;
    padding: clamp(28px, 5vw, 54px); background: #fff; border: 1px solid var(--border);
    border-radius: var(--radius-lg); box-shadow: var(--shadow-soft);
}
.info-list { display: grid; gap: 14px; }
.info-list div { padding: 18px; border-radius: var(--radius-sm); background: var(--surface-soft); }
.info-list strong { display: block; margin-bottom: 6px; color: var(--heading); }

.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card {
    min-width: 0;
    padding: 26px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: #fff;
    box-shadow: var(--shadow-soft);
}
.card p { color: var(--muted); }
.card .text-link { display: inline-flex; margin-top: 6px; }
.card-number { display: inline-grid; place-items: center; width: 40px; height: 40px; margin-bottom: 18px; border-radius: 12px; background: var(--surface-soft); color: var(--primary-strong); font-weight: 800; }

.media-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .9fr); gap: clamp(28px, 5vw, 64px); align-items: center; }
.media-row.reverse { grid-template-columns: minmax(320px, .9fr) minmax(0, 1fr); }
.media-row.reverse .media-image { order: -1; }
.media-image { padding: 14px; border-radius: var(--radius-lg); background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow); }
.media-image img { width: 100%; max-height: 420px; object-fit: contain; border-radius: calc(var(--radius-lg) - 9px); }
.feature-list { display: grid; gap: 14px; margin-top: 22px; }
.feature-item { padding: 16px 18px; border-left: 4px solid var(--primary); border-radius: 0 14px 14px 0; background: var(--surface-soft); }
.feature-item strong { display: block; color: var(--heading); margin-bottom: 4px; }

.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.review-card { padding: 24px; border-radius: var(--radius-md); border: 1px solid var(--border); background: #fff; box-shadow: var(--shadow-soft); }
.review-card blockquote { margin: 0 0 18px; color: var(--text); }
.review-card cite { color: var(--primary-strong); font-style: normal; font-weight: 700; }

.notice-box { padding: clamp(24px, 4vw, 38px); border-radius: var(--radius-lg); background: linear-gradient(135deg, #e5f8ff, #fff); border: 1px solid var(--border); }
.notice-box h2 { font-size: clamp(24px, 3vw, 34px); }
.notice-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 20px; }
.notice-grid div { padding: 18px; border-radius: var(--radius-sm); background: rgba(255,255,255,.8); }

.faq-list { display: grid; gap: 14px; }
.faq-item { border: 1px solid var(--border); border-radius: var(--radius-md); background: #fff; overflow: hidden; }
.faq-question { width: 100%; padding: 20px 22px; border: 0; background: #fff; color: var(--heading); font-weight: 800; text-align: left; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.faq-question::after { content: "+"; flex: 0 0 auto; font-size: 26px; color: var(--primary-strong); }
.faq-item.open .faq-question::after { content: "−"; }
.faq-answer { display: none; padding: 0 22px 22px; color: var(--muted); }
.faq-item.open .faq-answer { display: block; }

.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-md); background: #fff; }
table { width: 100%; border-collapse: collapse; min-width: 680px; }
th, td { padding: 16px 18px; border-bottom: 1px solid var(--border); text-align: left; }
th { background: var(--surface-soft); color: var(--heading); }
tr:last-child td { border-bottom: 0; }

.contact-form { display: grid; gap: 16px; }
.form-row { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
label { display: grid; gap: 8px; color: var(--heading); font-weight: 700; }
input, textarea, select { width: 100%; border: 1px solid var(--border); border-radius: 14px; background: #fff; color: var(--text); padding: 13px 15px; outline: none; }
textarea { min-height: 150px; resize: vertical; }
input:focus, textarea:focus, select:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(17,174,234,.10); }

.site-footer { background: var(--footer); color: var(--footer-text); padding: 58px 0 24px; }
.footer-grid { width: min(100% - 32px, 1200px); margin-inline: auto; display: grid; grid-template-columns: 1.4fr .8fr .8fr; gap: 40px; }
.footer-logo { display: inline-flex; padding: 10px 14px; border-radius: 14px; background: rgba(255,255,255,.95); }
.footer-logo img { width: 140px; max-height: 44px; object-fit: contain; }
.footer-brand p { max-width: 560px; margin-top: 18px; color: rgba(234,248,255,.8); }
.site-footer h2 { color: #fff; font-size: 18px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li + li { margin-top: 8px; }
.site-footer a:hover { text-decoration: underline; }
.footer-notice { width: min(100% - 32px, 1200px); margin: 34px auto 0; padding-top: 22px; border-top: 1px solid rgba(234,248,255,.16); color: rgba(234,248,255,.72); font-size: 14px; }

.drawer-overlay { position: fixed; inset: 0; z-index: 1090; background: rgba(7,58,104,.42); opacity: 0; transition: opacity .22s ease; }
.drawer-overlay.show { opacity: 1; }
.mobile-drawer { position: fixed; z-index: 1100; inset: 0 0 0 auto; width: min(86vw, 360px); padding: 20px; background: #fff; transform: translateX(104%); transition: transform .25s ease; overflow-y: auto; box-shadow: -20px 0 50px rgba(7,58,104,.18); }
.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: 132px; max-height: 44px; object-fit: contain; }
.drawer-close { width: 42px; height: 42px; border: 1px solid var(--border); border-radius: 12px; background: #fff; color: var(--heading); font-size: 30px; line-height: 1; }
.drawer-nav { display: grid; gap: 6px; padding: 16px 0; }
.drawer-nav a { padding: 12px 14px; border-radius: 12px; color: var(--text); font-weight: 700; }
.drawer-nav a:hover, .drawer-nav a.active { color: var(--primary-strong); background: var(--surface-soft); }
.drawer-register { width: 100%; }

@media (max-width: 1179px) {
    .desktop-nav { display: none; }
    .menu-toggle { display: block; }
    .header-inner { justify-content: space-between; }
}
@media (max-width: 920px) {
    .grid-4 { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .grid-3, .review-grid, .notice-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .page-hero-inner, .intro-panel, .media-row, .media-row.reverse { grid-template-columns: 1fr; }
    .media-row.reverse .media-image { order: 0; }
    .page-hero { padding-top: 54px; }
    .hero-image img, .media-image img { max-height: 380px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
    .carousel { aspect-ratio: 16 / 8.4; }
}
@media (max-width: 640px) {
    :root { --header-height: 68px; }
    .header-inner, .container, .wide-container, .footer-grid, .footer-notice { width: min(100% - 24px, 1200px); }
    .brand-logo img { width: 108px; }
    .main-btn { min-height: 42px; padding: 0 18px; }
    .header-actions { gap: 8px; }
    .menu-toggle { width: 42px; height: 42px; padding: 9px; }
    .section { padding: 52px 0; }
    .section-sm { padding: 38px 0; }
    .grid-2, .grid-3, .grid-4, .review-grid, .notice-grid, .footer-grid, .form-row { grid-template-columns: 1fr; }
    .footer-brand { grid-column: auto; }
    .card, .review-card { padding: 22px; }
    .carousel { border-radius: 18px; aspect-ratio: 16 / 10; }
    .carousel-control { width: 38px; height: 38px; font-size: 24px; }
    .carousel-prev { left: 10px; }
    .carousel-next { right: 10px; }
    .carousel-dots { bottom: 10px; }
    .page-hero-copy p, .lead { font-size: 16px; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}