:root { --ink:#181b27;--muted:#747b8d;--line:#e7e9f0;--primary:#5a5be7;--green:#199a6a; }
* { box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { min-height:100vh;margin:0;color:var(--ink);background:radial-gradient(circle at 82% 8%,rgba(102,103,233,.16),transparent 30%),#f4f5f9;font:14px/1.65 Inter,"Microsoft YaHei UI","PingFang SC",system-ui,sans-serif;padding:34px 18px; }
body::before { content:"";position:fixed;left:-160px;bottom:-190px;width:390px;height:390px;border-radius:50%;background:rgba(40,190,137,.07);pointer-events:none; }
svg { width:23px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round; }
.service-shell { width:min(100%,980px);margin:auto; }
header { display:flex;align-items:center;gap:11px;margin:0 0 22px 5px; }
.brand-mark { width:39px;height:39px;border-radius:12px;background:linear-gradient(145deg,#7273ef,#4b4cd3);color:#fff;display:grid;place-items:center;box-shadow:0 8px 20px rgba(82,83,216,.24); }
header strong,header small { display:block; } header strong { font-size:14px; } header small { color:#979baa;font-size:8px;letter-spacing:.15em; }
.hero { padding:clamp(30px,6vw,64px);border:1px solid var(--line);border-radius:25px;background:rgba(255,255,255,.96);box-shadow:0 24px 70px rgba(36,38,65,.1);display:grid;grid-template-columns:minmax(0,1.2fr) minmax(270px,.8fr);gap:45px;align-items:center; }
.tag { display:inline-flex;margin-bottom:18px;padding:5px 10px;border-radius:99px;color:var(--green);background:#e9f8f1;font-size:9px;font-weight:750; }
.eyebrow { margin:0 0 7px;color:#9ba0ae;font-size:9px;font-weight:800;letter-spacing:.18em; }
h1 { margin:0;font-size:clamp(36px,6vw,64px);line-height:1.08;letter-spacing:-.05em; } h1 em { color:var(--primary);font-style:normal; }
.hero-copy>p:not(.eyebrow) { max-width:540px;margin:20px 0;color:var(--muted);font-size:13px; }
ul { margin:0 0 25px;padding:0;list-style:none;display:grid;gap:9px; } li { display:flex;align-items:center;gap:8px;color:#5f6576;font-size:11px; } li i { width:19px;height:19px;border-radius:50%;background:#e9f8f1;color:var(--green);display:grid;place-items:center;font-style:normal;font-weight:800; }
.wechat-button { display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 19px;border-radius:11px;color:white;background:linear-gradient(135deg,#6768e9,#5051d2);box-shadow:0 9px 20px rgba(82,83,216,.23);font-weight:750;text-decoration:none; }
.hero-actions { display:flex;flex-wrap:wrap;align-items:center;gap:10px; }
.secondary-button { display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 17px;border:1px solid #dfe1eb;border-radius:11px;color:#555bc9;background:#fff;font-size:11px;font-weight:700;text-decoration:none; }
.price-card { padding:30px;border-radius:21px;color:white;background:linear-gradient(155deg,#282b43,#171a2c);box-shadow:0 20px 40px rgba(28,30,50,.18);text-align:center; }
.price-card>span { color:#aeb3c7;font-size:10px; }.price-card>strong { display:block;margin:2px 0;font-size:70px;line-height:1.2;letter-spacing:-.07em; }.price-card>strong small { margin-right:5px;font-size:24px;color:#aeb3c7; }.price-card>p { margin:0 0 22px;color:#aeb3c7;font-size:10px; }
.flow { padding-top:17px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:center;gap:8px;align-items:center;font-size:8px; }.flow b { font-weight:650; }.flow i { color:#747a95;font-style:normal; }
.service-guide { margin-top:18px;padding:30px;border:1px solid var(--line);border-radius:21px;background:rgba(255,255,255,.94);box-shadow:0 14px 42px rgba(36,38,65,.07); }
.service-guide h2 { margin:0 0 16px;font-size:25px;letter-spacing:-.03em; }
.direct-answer { padding:15px 17px;border-left:3px solid var(--primary);border-radius:0 11px 11px 0;color:#555c70;background:#f3f3ff;font-size:12px; }
.direct-answer strong { color:var(--ink); }
.fact-strip { margin:14px 0 0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border:1px solid var(--line);border-radius:13px;background:#fff;overflow:hidden; }
.fact-strip div { padding:12px 14px;border-right:1px solid var(--line); }
.fact-strip div:last-child { border-right:0; }
.fact-strip dt { color:#969baa;font-size:9px; }
.fact-strip dd { margin:2px 0 0;color:#41475a;font-size:11px;font-weight:750; }
.guide-grid { margin-top:14px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px; }
.guide-grid article { padding:18px;border:1px solid var(--line);border-radius:14px;background:#fafafd; }
.guide-grid article>span { color:var(--primary);font-size:9px;font-weight:800;letter-spacing:.12em; }
.guide-grid h3 { margin:5px 0 7px;font-size:14px; }
.guide-grid p { margin:0;color:var(--muted);font-size:11px;line-height:1.75; }
.compare-wrap { margin-top:14px;overflow-x:auto;border:1px solid var(--line);border-radius:14px; }
table { width:100%;border-collapse:collapse;min-width:620px;background:#fff;font-size:11px; }
th,td { padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top; }
th { color:#505668;background:#f7f7fb;font-size:10px; }
tbody tr:last-child td { border-bottom:0; }
.guide-more { margin:13px 2px 0;color:var(--muted);font-size:11px; }
.guide-more a { color:#555bc9;font-weight:750;text-decoration:none; }
.contact { margin-top:18px;padding:27px;border:1px solid var(--line);border-radius:21px;background:rgba(255,255,255,.94);box-shadow:0 14px 42px rgba(36,38,65,.07);display:grid;grid-template-columns:180px 1fr;gap:28px;align-items:center; }
.qr-wrap { padding:10px;border:1px solid var(--line);border-radius:16px;background:#fff; }.qr-wrap img { display:block;width:100%;aspect-ratio:1;object-fit:cover;object-position:center 64%;border-radius:10px; }
.contact h2 { margin:0 0 8px;font-size:24px;letter-spacing:-.03em; }.contact-copy>p:not(.eyebrow) { margin:0 0 17px;color:var(--muted);font-size:11px; }
.wechat-id { min-height:48px;padding:6px 7px 6px 13px;border:1px solid var(--line);border-radius:11px;background:#fafafd;display:flex;align-items:center;gap:10px; }.wechat-id span { color:#989dab;font-size:9px; }.wechat-id strong { margin-right:auto;font-size:14px;letter-spacing:.03em; }.wechat-id button { height:34px;padding:0 13px;border:0;border-radius:8px;color:var(--primary);background:#eeeeff;font-size:10px;font-weight:700;cursor:pointer; }
.service-faq { margin-top:18px;padding:30px;border:1px solid var(--line);border-radius:21px;background:rgba(255,255,255,.94);box-shadow:0 14px 42px rgba(36,38,65,.07); }
.service-faq h2 { margin:0 0 18px;font-size:25px;letter-spacing:-.03em; }
.faq-grid { display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px; }
.faq-grid article { padding:18px;border:1px solid var(--line);border-radius:14px;background:#fafafd; }
.faq-grid h3 { margin:0 0 7px;font-size:14px; }
.faq-grid p { margin:0;color:var(--muted);font-size:11px;line-height:1.75; }
.related-sites { margin-top:18px;padding:16px 20px;border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.88);display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:8px 15px;font-size:10px; }
.related-sites span { color:#9499a8;font-weight:750; }
.related-sites a { color:#555bc9;text-decoration:none;font-weight:700; }
footer { padding:18px 5px 0;color:#999eac;text-align:center;font-size:9px; }
footer a { margin-left:8px;color:#777cc8;text-decoration:none; }
.toast { position:fixed;left:50%;bottom:24px;transform:translateX(-50%);padding:10px 15px;border-radius:10px;color:#fff;background:#252837;box-shadow:0 10px 30px rgba(30,32,50,.2);font-size:10px; }

/* Long-form Codex verification guide */
.article-shell { width:min(100%,920px);margin:auto; }
.article-card { padding:clamp(25px,5vw,55px);border:1px solid var(--line);border-radius:25px;background:rgba(255,255,255,.97);box-shadow:0 24px 70px rgba(36,38,65,.1); }
.breadcrumb { margin-bottom:22px;color:#9398a6;font-size:10px; }
.breadcrumb a { color:#6268ce;text-decoration:none; }
.article-head h1 { max-width:760px;font-size:clamp(34px,5.6vw,57px); }
.article-lead { max-width:760px;margin:18px 0 13px;color:#62697b;font-size:14px;line-height:1.85; }
.article-meta { margin:0 0 24px;color:#999eab;font-size:10px; }
.answer-box { margin:0 0 32px;padding:18px 20px;border-left:4px solid var(--primary);border-radius:0 13px 13px 0;background:#f3f3ff;color:#4f566a;font-size:13px;line-height:1.85; }
.answer-box strong { color:var(--ink); }
.article-section { padding:29px 0;border-top:1px solid var(--line); }
.article-section h2 { margin:0 0 12px;font-size:24px;letter-spacing:-.025em; }
.article-section h3 { margin:21px 0 8px;font-size:16px; }
.article-section p { margin:9px 0;color:#5f6678;font-size:13px;line-height:1.9; }
.article-section ol { margin:14px 0 0;padding-left:22px;color:#5f6678;font-size:13px;line-height:1.9; }
.article-section li { display:list-item;margin:7px 0;color:#5f6678;font-size:13px; }
.article-table { margin-top:15px;overflow-x:auto;border:1px solid var(--line);border-radius:14px; }
.article-note { padding:15px 17px;border-radius:12px;background:#f7f7fa;color:#656b7b;font-size:12px;line-height:1.8; }
.service-cta { display:grid;grid-template-columns:1fr auto;gap:20px;align-items:center;padding:22px;border:1px solid #dfe0fb;border-radius:16px;background:linear-gradient(135deg,#f5f5ff,#fbfbff); }
.service-cta h2 { margin:0 0 5px;font-size:20px; }
.service-cta p { margin:0;color:#656b7b;font-size:12px; }
.service-cta a { display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 17px;border-radius:10px;color:#fff;background:#5759dc;font-size:11px;font-weight:750;text-decoration:none;white-space:nowrap; }
.sources { margin:12px 0 0;padding-left:20px; }
.sources li { margin:7px 0;color:#6c7282;font-size:11px; }
.sources a { color:#555bc9; }
.article-faq details { margin-top:9px;padding:15px 17px;border:1px solid var(--line);border-radius:12px;background:#fafafd; }
.article-faq summary { cursor:pointer;font-size:13px;font-weight:750; }
.article-faq p { margin:9px 0 0;font-size:12px; }
.article-footer { padding:20px 4px 0;color:#999eac;text-align:center;font-size:9px; }

@media(max-width:720px){ body{padding:20px 12px}.hero{grid-template-columns:1fr;padding:32px 24px;gap:30px}.price-card>strong{font-size:58px}.service-guide{padding:22px 18px}.fact-strip{grid-template-columns:repeat(2,minmax(0,1fr))}.fact-strip div{border-bottom:1px solid var(--line)}.fact-strip div:nth-child(2){border-right:0}.fact-strip div:nth-child(n+3){border-bottom:0}.guide-grid{grid-template-columns:1fr}.contact{grid-template-columns:105px 1fr;padding:18px;gap:16px}.contact h2{font-size:18px}.wechat-id{align-items:flex-start;flex-direction:column}.wechat-id button{width:100%}.service-faq{padding:22px 18px}.faq-grid{grid-template-columns:1fr}.article-card{padding:28px 20px}.service-cta{grid-template-columns:1fr}.service-cta a{width:100%} }