:root{--red:#cf0a2c;--red-dark:#a80724;--ink:#111827;--muted:#5f6f85;--line:#e3e8ef;--soft:#f7f9fb;--panel:#ffffff;--warm:#fff7f2}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.85;font-size:17px}
a{color:var(--red);text-decoration:none}a:hover{text-decoration:underline}
.top{border-bottom:1px solid #edf0f5;background:rgba(255,255,255,.96);position:sticky;top:0;z-index:20;box-shadow:0 6px 24px rgba(17,24,39,.05)}
.top-inner{max-width:1180px;margin:auto;display:flex;align-items:center;gap:28px;min-height:68px;padding:0 18px}
.brand{display:flex;align-items:center;gap:10px;font-weight:900;color:#111827;white-space:nowrap}
.brand img{width:34px;height:34px;border-radius:10px}.brand span{letter-spacing:0}
.nav{display:flex;gap:2px;overflow:auto;align-items:center}.nav a{padding:20px 16px;color:#1f2937;white-space:nowrap;border-bottom:3px solid transparent}
.nav a.active{color:var(--red);background:#fff;text-decoration:none;border-bottom-color:var(--red);font-weight:800}
.wrap{max-width:1180px;margin:0 auto;padding:24px 18px 0}.crumb{font-size:15px;color:#768397;margin:2px 0 18px}
.hero{background:linear-gradient(135deg,#f8fafc 0%,#fff 48%,#fff5f3 100%);border:1px solid #edf0f5;border-radius:0;padding:62px 58px;margin-bottom:26px;display:grid;grid-template-columns:1.02fr .98fr;gap:42px;align-items:center;box-shadow:0 22px 60px rgba(17,24,39,.06)}
.hero h1{font-size:44px;line-height:1.18;margin:18px 0 18px;letter-spacing:0;color:#111827;max-width:780px}.hero p{font-size:19px;color:#526174;margin:0 0 24px;max-width:760px}
.hero-icon{width:92px;height:92px;border-radius:24px;background:linear-gradient(180deg,#fff,#f3f6fb);display:grid;place-items:center;border:1px solid #edf0f5;box-shadow:0 14px 30px rgba(207,10,44,.08)}
.hero-icon img{width:64px;height:64px;border-radius:14px}.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:50px;padding:12px 22px;border-radius:8px;font-weight:800;border:1px solid #e3e8ef}
.btn.primary{background:var(--red);color:#fff;border-color:var(--red);box-shadow:0 16px 34px rgba(207,10,44,.22)}.btn.secondary{background:#fff;color:#111827;border-color:#d8dee8}
.shot-card{background:#fff;border:1px solid #e2e8f0;border-radius:8px;padding:14px;box-shadow:0 18px 45px rgba(17,24,39,.08)}.shot-card img{width:100%;display:block;border-radius:6px}.shot-card figcaption{color:#6b7788;font-size:14px;margin-top:10px}
.meta-line{border-top:1px solid #e3e8ef;border-bottom:1px solid #e3e8ef;padding:13px 0;color:#637083;margin:18px 0 28px}
.section{margin:28px 0;padding:30px;border:1px solid #e1e7ef;border-radius:8px;background:#fff}.section.soft{background:linear-gradient(180deg,#fff,#f8fafc)}
.eyebrow{font-size:13px;color:var(--red);font-weight:900;letter-spacing:.08em;text-transform:uppercase}.section h2{font-size:28px;line-height:1.35;margin:8px 0 14px;border-bottom:1px solid #e5eaf1;padding-bottom:10px;color:#151b26}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.grid.two{grid-template-columns:repeat(2,1fr)}
.card{border:1px solid #e1e7ef;border-radius:8px;background:#fff;padding:20px;color:#111827;transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease}.card:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(17,24,39,.08);border-color:#f0bbc6;text-decoration:none}
.card h3{font-size:20px;margin:0 0 8px;color:#111827}.card p{margin:0;color:#5d6c80}.mini-icon{width:48px;height:48px;border-radius:14px;background:#fff0f2;display:grid;place-items:center;color:var(--red);margin-bottom:14px;font-weight:900;border:1px solid #ffd7df}
.download-panel{max-width:760px;margin:0 auto 24px;border:1px solid #e4e9f1;border-radius:8px;background:#fff;padding:24px;box-shadow:0 18px 45px rgba(17,24,39,.08)}
.download-panel .row{display:flex;justify-content:space-between;gap:16px;color:#5f6f85;margin-bottom:14px}.download-panel .btn{width:100%;font-size:22px;padding:16px}.trust{display:flex;justify-content:center;gap:22px;flex-wrap:wrap;color:#657287;font-size:14px;margin-top:12px}
.table-wrap{overflow:auto;border:1px solid #e1e7ef;border-radius:8px}.table-wrap table{width:100%;border-collapse:collapse;min-width:680px}.table-wrap th,.table-wrap td{padding:14px 16px;text-align:left;border-bottom:1px solid #eef2f6;vertical-align:top}.table-wrap th{background:#f6f7f9;font-weight:800}
.article-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:28px;align-items:start}.toc{position:sticky;top:88px;border:1px solid #e1e7ef;border-radius:8px;padding:18px;background:#fff}.toc strong{display:block;margin-bottom:12px;color:#111827}.toc a{display:block;color:#667385;margin:10px 0;font-size:15px;border-left:2px solid transparent;padding-left:10px}.toc a:hover{border-left-color:var(--red);color:var(--red);text-decoration:none}
.article{min-width:0}.visual{border-radius:8px;background:#151b26;color:#fff;padding:28px;margin:24px 0}.visual h3{margin:0 0 16px;font-size:24px}.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.flow div{background:#222b38;border:1px solid rgba(255,255,255,.12);border-radius:8px;padding:16px}.flow strong{color:#ffccd5}
.handoff{background:linear-gradient(135deg,#fff7f2,#fff);border:1px solid #efdce0;border-radius:8px;padding:26px;margin:28px 0}.handoff-links{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.footer{background:#111827;color:#aeb7c6;margin-top:50px}.footer-inner{max-width:1180px;margin:auto;padding:34px 18px}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}.footer h3{color:#fff;font-size:16px}.footer a{display:block;color:#aeb7c6;margin:8px 0}.footer-bottom{border-top:1px solid rgba(255,255,255,.25);margin-top:28px;padding-top:22px;text-align:center;font-size:14px}
.faq details{border:1px solid #e1e7ef;border-radius:8px;padding:14px 16px;margin:10px 0;background:#fff}.faq summary{font-weight:800;cursor:pointer;color:#111827}.content-markdown{display:none}.conversion-anchor{scroll-margin-top:90px}
@media(max-width:860px){.top-inner{height:auto;align-items:flex-start;flex-direction:column;padding:10px 14px}.nav a{padding:10px 12px}.hero{grid-template-columns:1fr;padding:34px 22px}.hero h1{font-size:31px}.hero p{font-size:17px}.grid,.grid.two,.footer-grid,.handoff-links,.flow{grid-template-columns:1fr}.article-layout{grid-template-columns:1fr}.toc{position:static}.download-panel .row{flex-direction:column}.wrap{padding-left:14px;padding-right:14px}body{font-size:16px}}