:root {
    --blue: #7cc8f8;
    --blue-deep: #3277b8;
    --cream: #fff3c6;
    --orange: #f6a85f;
    --soft-orange: #ffe2c4;
    --white: #ffffff;
    --ink: #213042;
    --muted: #64748b;
    --line: #e7eef7;
    --card: #ffffffcc;
    --shadow: 0 18px 50px rgba(73, 111, 150, .16);
    --radius-lg: 30px;
    --radius-md: 22px;
    --radius-sm: 14px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at top left, rgba(124, 200, 248, .28), transparent 38rem),
        radial-gradient(circle at 85% 10%, rgba(255, 226, 196, .75), transparent 32rem),
        linear-gradient(180deg, #f8fcff 0%, #fffaf0 48%, #f7fbff 100%);
    line-height: 1.75;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1160px, calc(100% - 32px)); margin: 0 auto; }
.skip-link { position: absolute; left: -999px; top: 8px; padding: 8px 12px; background: #fff; border-radius: 12px; }
.skip-link:focus { left: 12px; z-index: 20; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(255,255,255,.86);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(231, 238, 247, .95);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; min-height: 76px; gap: 18px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 900; letter-spacing: .04em; }
.brand-mark { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 16px; background: linear-gradient(135deg, var(--blue), var(--cream)); color: var(--blue-deep); box-shadow: var(--shadow); }
.brand-text { font-size: 1.25rem; }
.main-nav { display: flex; align-items: center; gap: 8px; }
.main-nav a { padding: 10px 14px; border-radius: 999px; color: #31516f; font-weight: 700; }
.main-nav a:hover, .main-nav a.active { background: var(--cream); color: #1f659f; }
.menu-toggle { display: none; border: 0; border-radius: 999px; padding: 10px 16px; background: var(--blue); color: #fff; font-weight: 800; }
.hero { padding: 72px 0 44px; }
.hero-grid { display: grid; grid-template-columns: 1.06fr .94fr; gap: 34px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; padding: 8px 13px; border-radius: 999px; background: rgba(255, 243, 198, .9); color: #936027; font-weight: 800; }
h1, h2, h3 { line-height: 1.18; margin: 0 0 16px; }
h1 { font-size: clamp(2.35rem, 5vw, 4.8rem); letter-spacing: -.04em; }
h2 { font-size: clamp(1.8rem, 3vw, 3rem); letter-spacing: -.025em; }
h3 { font-size: 1.28rem; }
p { margin: 0 0 16px; }
.lead { font-size: clamp(1.05rem, 2vw, 1.28rem); color: #4a6076; max-width: 760px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: 999px; padding: 12px 20px; font-weight: 900; border: 1px solid transparent; transition: transform .18s ease, box-shadow .18s ease; }
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-primary { background: linear-gradient(135deg, var(--blue), #93d9ff); color: #12466c; }
.btn-soft { background: var(--white); color: #356383; border-color: var(--line); }
.hero-card { padding: 18px; border-radius: var(--radius-lg); background: rgba(255,255,255,.7); box-shadow: var(--shadow); border: 1px solid rgba(255,255,255,.8); }
.hero-card img { border-radius: 24px; }
.section { padding: 58px 0; }
.section-soft { background: rgba(255,255,255,.52); border-block: 1px solid rgba(231, 238, 247, .75); }
.section-head { display: flex; justify-content: space-between; gap: 24px; align-items: end; margin-bottom: 26px; }
.section-head p { max-width: 690px; color: var(--muted); }
.grid { display: grid; gap: 18px; }
.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 { background: var(--card); border: 1px solid rgba(231, 238, 247, .95); border-radius: var(--radius-md); padding: 22px; box-shadow: 0 12px 34px rgba(73, 111, 150, .09); }
.card:hover { border-color: rgba(124, 200, 248, .8); }
.card img { border-radius: 20px; margin-bottom: 16px; background: #fff; }
.badges { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.badge { display: inline-flex; padding: 6px 10px; border-radius: 999px; background: #eef8ff; color: #2d6b99; font-size: .88rem; font-weight: 800; }
.badge.orange { background: #fff1df; color: #98612c; }
.badge.green { background: #eefae9; color: #4f7a37; }
.feature-list { list-style: none; padding: 0; margin: 16px 0 0; display: grid; gap: 10px; }
.feature-list li { position: relative; padding-left: 28px; }
.feature-list li::before { content: "★"; position: absolute; left: 0; color: var(--orange); }
.highlight { background: linear-gradient(135deg, rgba(124,200,248,.18), rgba(255,243,198,.72)); border-radius: var(--radius-lg); padding: clamp(24px, 4vw, 42px); border: 1px solid rgba(255,255,255,.9); }
.timeline { display: grid; gap: 14px; counter-reset: step; }
.timeline-item { counter-increment: step; display: grid; grid-template-columns: auto 1fr; gap: 16px; align-items: start; padding: 18px; background: #fff; border-radius: 20px; border: 1px solid var(--line); }
.timeline-item::before { content: counter(step); width: 38px; height: 38px; border-radius: 15px; display: grid; place-items: center; background: var(--cream); color: #8a5b1d; font-weight: 900; }
.table-wrap { overflow-x: auto; border-radius: 22px; border: 1px solid var(--line); background: #fff; }
table { width: 100%; border-collapse: collapse; min-width: 680px; }
th, td { padding: 16px; text-align: left; border-bottom: 1px solid var(--line); }
th { background: #f1f9ff; color: #305d80; }
tr:last-child td { border-bottom: 0; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 18px 20px; }
.faq details + details { margin-top: 12px; }
.faq summary { cursor: pointer; font-weight: 900; }
.form { display: grid; gap: 14px; }
.form label { display: grid; gap: 8px; font-weight: 800; color: #36556c; }
.form input, .form textarea, .form select { width: 100%; border: 1px solid var(--line); border-radius: 16px; padding: 12px 14px; font: inherit; background: #fff; }
.form textarea { min-height: 138px; resize: vertical; }
.notice { padding: 16px 18px; border-radius: 18px; background: #fff7df; border: 1px solid #ffe2a9; color: #765326; }
.video-shell { position: relative; overflow: hidden; border-radius: 22px; background: linear-gradient(135deg, #dff4ff, #fff3c6); aspect-ratio: 16/9; display: grid; place-items: center; margin-bottom: 16px; }
.play-dot { width: 64px; height: 64px; border-radius: 50%; background: #fff; box-shadow: var(--shadow); position: relative; }
.play-dot::after { content: ""; position: absolute; left: 26px; top: 20px; border-left: 18px solid var(--orange); border-top: 12px solid transparent; border-bottom: 12px solid transparent; }
.site-footer { margin-top: 48px; padding: 44px 0; background: #213042; color: #e8f2fb; }
.footer-grid { display: grid; grid-template-columns: 1.2fr .9fr 1fr; gap: 22px; }
.site-footer h2 { font-size: 1.2rem; color: #fff; }
.site-footer p { color: #cbd9e8; }
@media (max-width: 900px) {
    .hero-grid, .grid-2, .grid-3, .grid-4, .footer-grid { grid-template-columns: 1fr; }
    .section-head { display: block; }
    .menu-toggle { display: inline-flex; }
    .main-nav { position: absolute; left: 16px; right: 16px; top: 74px; display: none; flex-direction: column; align-items: stretch; padding: 14px; border-radius: 22px; background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); }
    .main-nav.open { display: flex; }
    .main-nav a { text-align: center; }
}
@media (max-width: 560px) {
    .container { width: min(100% - 22px, 1160px); }
    .hero { padding-top: 44px; }
    .card { padding: 18px; }
    .hero-actions { flex-direction: column; }
    .btn { width: 100%; }
}