:root {
    --seo-bg: #edf1f6;
    --seo-paper: rgba(255, 255, 255, .82);
    --seo-ink: #0b1b2e;
    --seo-muted: #52677d;
    --seo-navy: #13245f;
    --seo-teal: #0f827e;
    --seo-gold: #e8a13a;
    --seo-line: rgba(19, 36, 95, .12);
    --seo-shadow: 0 28px 60px -38px rgba(11, 42, 74, .58);
    --seo-max: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--seo-ink);
    background:
        radial-gradient(58% 34% at 10% 0%, rgba(232, 161, 58, .18), transparent 65%),
        radial-gradient(58% 40% at 92% 2%, rgba(15, 130, 126, .17), transparent 66%),
        linear-gradient(180deg, #f8fbfe, var(--seo-bg) 48%, #e6ebf2);
    font-family: "Plus Jakarta Sans", "Noto Sans TC", system-ui, sans-serif;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.seo-wrap { width: min(var(--seo-max), calc(100% - 40px)); margin: 0 auto; }
.seo-glass {
    border: 1px solid rgba(255, 255, 255, .88);
    background: linear-gradient(150deg, rgba(255, 255, 255, .9), rgba(255, 255, 255, .58));
    box-shadow: inset 0 1px 0 #fff, var(--seo-shadow);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}
.seo-nav { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid var(--seo-line); background: rgba(248, 251, 254, .86); backdrop-filter: blur(18px); }
.seo-nav-inner { min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.seo-logo { display: block; width: 145px; height: auto; mix-blend-mode: multiply; }
.seo-nav-links { display: flex; align-items: center; gap: 18px; font-size: 13px; font-weight: 700; }
.seo-nav-links a { text-decoration: none; color: var(--seo-muted); }
.seo-nav-links a:hover { color: var(--seo-teal); }
.seo-button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px; padding: 0 22px; border-radius: 14px; text-decoration: none; font-size: 14px; font-weight: 800; }
.seo-button-primary { color: #fff; background: linear-gradient(135deg, var(--seo-navy), var(--seo-teal)); box-shadow: 0 14px 28px -16px rgba(19, 36, 95, .76); }
.seo-button-light { border: 1px solid var(--seo-line); background: rgba(255, 255, 255, .75); color: var(--seo-navy); }
.seo-crumbs { padding-top: 24px; color: #708399; font-size: 12px; }
.seo-crumbs a { text-decoration: none; }
.seo-hero { padding: 56px 0 74px; }
.seo-hero-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(300px, .85fr); align-items: center; gap: 42px; }
.seo-kicker { color: var(--seo-teal); font-size: 12px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.seo-hero h1 { max-width: 760px; margin: 12px 0 20px; font-size: clamp(38px, 6vw, 66px); line-height: 1.08; letter-spacing: -.035em; text-wrap: balance; }
.seo-lead { max-width: 780px; margin: 0; color: var(--seo-muted); font-size: 18px; line-height: 1.85; }
.seo-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.seo-proof { padding: 26px; border-radius: 26px; }
.seo-proof-label { color: var(--seo-teal); font-size: 12px; font-weight: 800; letter-spacing: .1em; }
.seo-proof strong { display: block; margin: 8px 0 16px; font-size: 24px; line-height: 1.35; }
.seo-proof-list { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; color: var(--seo-muted); font-size: 14px; }
.seo-proof-list li { display: grid; grid-template-columns: 22px 1fr; gap: 8px; }
.seo-proof-list li::before { content: "✓"; display: grid; place-items: center; width: 20px; height: 20px; border-radius: 50%; color: var(--seo-teal); background: rgba(15, 130, 126, .1); font-weight: 900; }
.seo-section { padding: 78px 0; }
.seo-section-tint { border-block: 1px solid var(--seo-line); background: rgba(255, 255, 255, .34); }
.seo-section-head { max-width: 720px; margin: 0 auto 34px; text-align: center; }
.seo-section-head h2 { margin: 8px 0 12px; font-size: clamp(29px, 4vw, 43px); line-height: 1.2; letter-spacing: -.025em; }
.seo-section-head p { margin: 0; color: var(--seo-muted); }
.seo-grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.seo-card { padding: 24px; border-radius: 20px; }
.seo-card-index { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 12px; color: #fff; background: linear-gradient(135deg, var(--seo-navy), var(--seo-teal)); font-size: 12px; font-weight: 900; }
.seo-card h3 { margin: 17px 0 8px; font-size: 19px; }
.seo-card p { margin: 0; color: var(--seo-muted); font-size: 14px; }
.seo-facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.seo-fact { padding: 25px; border-radius: 20px; }
.seo-fact h3 { margin: 0 0 8px; font-size: 19px; }
.seo-fact p { margin: 0; color: var(--seo-muted); font-size: 14px; }
.seo-note { margin-top: 18px; color: #718399; font-size: 12px; text-align: center; }
.seo-faq { max-width: 780px; margin: 0 auto; display: grid; gap: 13px; }
.seo-faq details { padding: 18px 21px; border-radius: 16px; }
.seo-faq summary { display: flex; align-items: center; justify-content: space-between; gap: 15px; cursor: pointer; list-style: none; font-weight: 800; }
.seo-faq summary::-webkit-details-marker { display: none; }
.seo-faq summary::after { content: "+"; color: var(--seo-teal); font-size: 21px; font-weight: 500; }
.seo-faq details[open] summary::after { content: "−"; }
.seo-faq p { margin: 10px 0 0; color: var(--seo-muted); font-size: 14px; }
.seo-cta { padding: 0 0 82px; }
.seo-cta-card { padding: 44px 28px; border-radius: 28px; text-align: center; }
.seo-cta-card h2 { margin: 0; font-size: clamp(30px, 4vw, 46px); }
.seo-cta-card p { margin: 12px auto 24px; color: var(--seo-muted); }
.seo-footer { border-top: 1px solid var(--seo-line); padding: 28px 0; color: #6d8094; font-size: 12px; }
.seo-footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.seo-footer-links { display: flex; flex-wrap: wrap; gap: 14px; }
.seo-footer a { text-decoration: none; }

@media (max-width: 760px) {
    .seo-nav-links a:not(.seo-button) { display: none; }
    .seo-logo { width: 120px; }
    .seo-hero { padding: 38px 0 56px; }
    .seo-hero-grid { grid-template-columns: 1fr; gap: 26px; }
    .seo-hero h1 { font-size: clamp(36px, 12vw, 52px); }
    .seo-lead { font-size: 16px; }
    .seo-section { padding: 58px 0; }
    .seo-grid-3, .seo-facts { grid-template-columns: 1fr; }
    .seo-footer-inner { align-items: flex-start; flex-direction: column; }
}