:root {
    color-scheme: light;
    --bg: #f5fbfa;
    --panel: #ffffff;
    --soft: #eaf7f4;
    --line: #d5eae6;
    --line-strong: #9bd8ce;
    --text: #17312d;
    --muted: #5e736f;
    --primary: #087f73;
    --primary-dark: #05645c;
    --blue: #2563a6;
    --warning: #875815;
    --warning-bg: #fff7e7;
    --danger: #9c3f3f;
    --danger-bg: #fff1f1;
    --shadow: 0 24px 70px rgba(25, 83, 72, .12);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-height: 100vh;
    color: var(--text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background:
        radial-gradient(circle at 10% 0%, rgba(8,127,115,.12), transparent 28%),
        radial-gradient(circle at 90% 7%, rgba(37,99,166,.08), transparent 24%),
        linear-gradient(180deg, #fbfffe 0%, var(--bg) 48%, #fff 100%);
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
.container { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    border-bottom: 1px solid rgba(8,127,115,.12);
    background: rgba(251,255,254,.88);
    backdrop-filter: blur(16px);
}
.nav { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 800; }
.brand img { width: 40px; height: 40px; }
.nav-links { display: flex; gap: 24px; color: #506a65; font-size: 14px; }
.nav-links a:hover { color: var(--primary); }
.nav-button, .button-primary, .button-secondary {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 18px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 750;
    transition: .2s ease;
}
.nav-button, .button-primary {
    color: #fff;
    background: linear-gradient(135deg, #0b9788, var(--primary));
    box-shadow: 0 12px 28px rgba(8,127,115,.22);
}
.button-secondary { border: 1px solid var(--line-strong); background: rgba(255,255,255,.86); color: var(--primary-dark); }
.nav-button:hover, .button-primary:hover, .button-secondary:hover { transform: translateY(-2px); }
.hero { padding: 100px 0 82px; }
.hero-grid { display: grid; grid-template-columns: minmax(0,1.08fr) minmax(360px,.92fr); gap: 62px; align-items: center; }
.eyebrow, .badge { width: fit-content; display: inline-flex; align-items: center; gap: 9px; padding: 8px 12px; border: 1px solid #b8e4dd; border-radius: 999px; color: var(--primary-dark); background: #e0f5f1; font-size: 13px; font-weight: 750; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: #12a58f; box-shadow: 0 0 13px rgba(18,165,143,.5); }
h1 { margin: 24px 0 22px; font-size: clamp(46px,7vw,76px); line-height: 1.02; letter-spacing: -.052em; }
.gradient { color: transparent; background: linear-gradient(90deg, var(--primary), #1590a2 55%, var(--blue)); -webkit-background-clip: text; background-clip: text; }
.hero-copy, .page-copy { max-width: 730px; color: var(--muted); font-size: 18px; line-height: 1.78; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.trust-row { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 26px; color: #627a75; font-size: 13px; }
.trust-row span { display: inline-flex; align-items: center; gap: 8px; }
.trust-row i { width: 6px; height: 6px; border-radius: 50%; background: var(--primary); }
.card, .panel, .quick-guide { border: 1px solid var(--line); border-radius: 22px; background: linear-gradient(180deg,#fff,#f8fffd); box-shadow: var(--shadow); }
.quick-guide { padding: 24px; }
.quick-guide h3 { margin-bottom: 18px; }
.quick-step { display: grid; grid-template-columns: 42px 1fr; gap: 14px; padding: 15px 0; border-bottom: 1px solid var(--line); }
.quick-step:last-child { border-bottom: 0; }
.quick-step strong { display: block; margin-bottom: 5px; }
.quick-step p { margin: 0; color: var(--muted); line-height: 1.62; font-size: 14px; }
.step-icon { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 13px; color: #fff; background: linear-gradient(135deg,#14a28f,var(--primary)); font-weight: 850; }
.section { padding: 84px 0; }
.section.alt { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(234,247,244,.74); }
.section-head { max-width: 780px; margin-bottom: 36px; }
.kicker { color: var(--primary); font-size: 12px; font-weight: 850; letter-spacing: .14em; text-transform: uppercase; }
h2 { margin: 12px 0 16px; font-size: clamp(34px,5vw,52px); line-height: 1.1; letter-spacing: -.04em; }
h3 { margin: 0 0 11px; font-size: 20px; }
.section-head p, .card p, .content p, .content li { color: var(--muted); line-height: 1.78; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.grid-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: 18px; }
.card { padding: 25px; box-shadow: none; }
.card-number { width: 42px; height: 42px; display: grid; place-items: center; margin-bottom: 20px; border: 1px solid var(--line-strong); border-radius: 12px; color: var(--primary-dark); background: #e0f5f1; font-size: 13px; font-weight: 850; }
.page-hero { padding: 88px 0 62px; border-bottom: 1px solid var(--line); }
.page-hero h1 { max-width: 940px; font-size: clamp(43px,6vw,66px); }
.content { max-width: 860px; }
.content h2 { margin-top: 42px; font-size: 30px; }
.content h3 { margin-top: 28px; }
.content ul, .content ol { padding-left: 22px; }
.content li { margin: 9px 0; }
.notice, .alert { margin: 26px 0; padding: 20px 22px; border-radius: 16px; line-height: 1.72; }
.notice { border: 1px solid #efd8a9; background: var(--warning-bg); color: var(--warning); }
.alert { border: 1px solid #efc7c7; background: var(--danger-bg); color: var(--danger); }
.checklist { list-style: none; padding-left: 0 !important; }
.checklist li { position: relative; padding-left: 31px; }
.checklist li::before { content: "✓"; position: absolute; left: 0; top: 2px; width: 21px; height: 21px; display: grid; place-items: center; border-radius: 50%; color: #fff; background: var(--primary); font-size: 12px; font-weight: 900; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
table { width: 100%; border-collapse: collapse; min-width: 650px; }
th, td { padding: 17px 18px; text-align: left; border-bottom: 1px solid var(--line); }
th { color: var(--primary-dark); font-size: 13px; background: var(--soft); }
td { color: var(--muted); line-height: 1.62; }
tr:last-child td { border-bottom: 0; }
.cta { padding: 38px 0 90px; }
.cta-box { padding: 42px; text-align: center; border: 1px solid var(--line-strong); border-radius: 24px; background: radial-gradient(circle at 50% 0%,rgba(20,162,143,.14),transparent 42%),#fff; }
.cta-box p { max-width: 700px; margin: 0 auto 26px; color: var(--muted); line-height: 1.75; }
.site-footer { border-top: 1px solid var(--line); padding: 34px 0; color: #738983; font-size: 13px; }
.footer-grid { display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 20px; }
.footer-links a:hover { color: var(--primary); }
.error-page { min-height: calc(100vh - 160px); display: grid; place-items: center; padding: 70px 20px; text-align: center; }
.error-code { font-size: clamp(90px,22vw,190px); line-height: .8; letter-spacing: -.08em; color: transparent; background: linear-gradient(90deg,#0b9788,var(--blue)); -webkit-background-clip: text; background-clip: text; }
@media (max-width: 900px) {
    .nav-links { display: none; }
    .hero-grid, .grid-3, .grid-2 { grid-template-columns: 1fr; }
    .hero { padding-top: 72px; }
    .hero-grid { gap: 40px; }
}
@media (max-width: 620px) {
    .container { width: min(100% - 28px,1120px); }
    .nav-button { display: none; }
    .footer-grid { align-items: flex-start; flex-direction: column; }
    .cta-box { padding: 30px 20px; }
}