/* SEO content pages: extend daifazhan.com's original blue/deep/orange visual language. */
.seo-main{padding:38px 0 78px;background:var(--background);min-height:72vh}
.seo-breadcrumb{font-size:13px;color:var(--muted);margin:0 0 20px;display:flex;gap:7px;flex-wrap:wrap}
.seo-breadcrumb a{color:var(--blue)}.seo-breadcrumb a:hover{text-decoration:underline}
.seo-hero{position:relative;overflow:hidden;padding:42px 44px;margin-bottom:26px;background:linear-gradient(135deg,#eef5ff 0%,#fff 58%,#fff8e8 100%);border:1px solid #dce8f8;border-radius:24px;box-shadow:var(--shadow)}
.seo-hero:after{content:"";position:absolute;right:-72px;top:-90px;width:245px;height:245px;border-radius:50%;background:rgba(37,99,235,.07)}
.seo-kicker{position:relative;z-index:1;display:inline-flex;padding:6px 11px;margin-bottom:13px;color:#9a6500;background:#fff5d9;border:1px solid #f5dc9a;border-radius:999px;font-size:13px;font-weight:800}
.seo-hero h1{position:relative;z-index:1;margin:0 0 13px;color:var(--deep);font-size:clamp(30px,4.4vw,45px);line-height:1.3;letter-spacing:-.025em}
.seo-lead{position:relative;z-index:1;max-width:900px;margin:0 0 10px;color:var(--muted);font-size:17px;line-height:1.9}
.seo-update{position:relative;z-index:1;margin:0;color:#748196;font-size:13px}
.seo-layout{display:grid;grid-template-columns:minmax(0,1fr) 292px;gap:24px;align-items:start}
.seo-article,.seo-side-card,.seo-entry-card{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 8px 24px rgba(30,58,95,.06)}
.seo-article{padding:34px 38px}.seo-article h2{margin:34px 0 14px;padding-left:13px;color:var(--deep);border-left:4px solid var(--blue);font-size:25px;line-height:1.45}.seo-article h2:first-child{margin-top:0}.seo-article h3{margin:24px 0 9px;color:#30445e;font-size:19px}.seo-article p{margin:0 0 15px;color:#4d5f74;font-size:16px;line-height:1.95}.seo-article ul,.seo-article ol{margin:8px 0 18px 22px;color:#4d5f74;line-height:1.9}.seo-article li{margin:6px 0}
.seo-note{margin:22px 0;padding:16px 18px;color:#6b5207;background:#fff9e8;border:1px solid #f5dc9a;border-radius:13px;line-height:1.8}
.seo-table-wrap{overflow:auto;margin:18px 0 24px}.seo-table{width:100%;min-width:650px;border-collapse:collapse;font-size:14px}.seo-table th,.seo-table td{padding:12px 13px;border:1px solid var(--line);text-align:left;vertical-align:top;line-height:1.65}.seo-table th{color:#1e3a5f;background:var(--soft-blue)}
.seo-sidebar{position:sticky;top:96px;display:grid;gap:16px}.seo-side-card{padding:20px}.seo-side-card h2{margin:0 0 12px;color:var(--deep);font-size:18px}.seo-side-card a{display:block;padding:9px 0;color:#526174;border-bottom:1px solid #edf2f7;font-size:14px;line-height:1.55}.seo-side-card a:last-child{border-bottom:0}.seo-side-card a:hover{color:var(--blue)}
.seo-cta{margin-top:26px;padding:24px;color:#fff;background:linear-gradient(120deg,var(--deep),var(--blue) 72%,#f59e0b);border-radius:16px}.seo-cta h2{margin:0 0 8px;padding:0;color:#fff;border:0;font-size:21px}.seo-cta p{margin:0 0 15px;color:#dbe7ff}.seo-cta a{display:inline-flex;min-height:44px;align-items:center;padding:10px 18px;color:var(--deep);background:#fff;border-radius:10px;font-weight:800}
.seo-entry-section{padding:68px 0;background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.seo-entry-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.seo-entry-card{display:block;padding:22px;border-top:4px solid var(--blue);transition:.2s ease}.seo-entry-card:nth-child(even){border-top-color:var(--orange)}.seo-entry-card:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(30,58,95,.1)}.seo-entry-card h2,.seo-entry-card h3{margin:0 0 8px;color:var(--deep);font-size:18px}.seo-entry-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
.seo-topic-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}.seo-topic-links a{display:inline-flex;padding:7px 12px;color:var(--blue);background:var(--soft-blue);border-radius:999px;font-size:13px;font-weight:700}.seo-topic-links a:hover{color:#fff;background:var(--blue)}
.seo-footer-links{display:flex;gap:12px;flex-wrap:wrap;margin-top:14px}.seo-footer-links a{color:#bac5d4;font-size:13px}.seo-footer-links a:hover{color:#fff}
.seo-faq{display:grid;gap:14px}.seo-faq-item{padding:18px;background:#f8fafc;border:1px solid var(--line);border-radius:14px}.seo-faq-item h2,.seo-faq-item h3{margin:0 0 8px;padding:0;color:var(--deep);border:0;font-size:18px}.seo-faq-item p{margin:0}
@media(max-width:980px){.seo-layout{grid-template-columns:1fr}.seo-sidebar{position:static;grid-template-columns:repeat(2,1fr)}.seo-entry-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.seo-main{padding:24px 0 54px}.seo-hero{padding:28px 21px;border-radius:18px}.seo-hero h1{font-size:29px}.seo-lead{font-size:15px}.seo-article{padding:24px 19px}.seo-article h2{font-size:22px}.seo-sidebar{grid-template-columns:1fr}.seo-entry-grid{grid-template-columns:1fr}.seo-table{min-width:560px}}