:root{
  --bg:#f6f7fb;
  --card:#ffffff;
  --ink:#1f2937;
  --muted:#667085;
  --brand:#1f6f78;
  --brand-2:#f4a261;
  --line:#e5e7eb;
  --shadow:0 14px 36px rgba(31,41,55,.08);
  --radius:22px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;line-height:1.7}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1180px,92vw);margin:0 auto}
.skip-link{position:absolute;left:-999px;top:10px;background:#fff;padding:10px 14px;border-radius:10px;z-index:50}.skip-link:focus{left:10px}
.site-header{background:linear-gradient(135deg,#143b42,#1f6f78 54%,#f4a261);color:#fff;position:relative;overflow:hidden}
.site-header:after{content:"";position:absolute;inset:auto -10% -42% 45%;height:360px;border-radius:999px;background:rgba(255,255,255,.12);filter:blur(4px)}
.topbar{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;padding:18px 0 8px;gap:18px;flex-wrap:wrap}
.logo{display:inline-flex;align-items:center;gap:12px;font-weight:900;letter-spacing:.02em}
.logo-mark{width:48px;height:48px;border-radius:16px;background:#fff;color:var(--brand);display:grid;place-items:center;font-size:24px;box-shadow:var(--shadow)}
.logo small{display:block;font-weight:500;opacity:.84;letter-spacing:0;font-size:12px}.logo strong{font-size:24px}
nav ul{display:flex;list-style:none;margin:0;padding:0;gap:8px;flex-wrap:wrap;align-items:center}nav a{display:block;padding:9px 12px;border-radius:999px;background:rgba(255,255,255,.12)}nav a:hover,nav a:focus{background:#fff;color:var(--brand)}
.search-area{position:relative;z-index:2;padding:10px 0 16px}.search-box{display:flex;gap:10px;background:rgba(255,255,255,.16);padding:10px;border-radius:18px;backdrop-filter:blur(8px)}.search-box input{flex:1;min-width:160px;border:0;border-radius:14px;padding:12px 14px;font-size:16px}.search-box button,.btn{border:0;border-radius:14px;padding:12px 18px;background:#fff;color:var(--brand);font-weight:800;cursor:pointer}.btn.alt{background:var(--ink);color:#fff}.search-note{min-height:24px;margin:8px 0 0;color:#fff;font-size:14px;opacity:.95}
.hero{position:relative;z-index:1;padding:26px 0 54px}.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center}.breadcrumb{display:flex;gap:8px;flex-wrap:wrap;font-size:14px;opacity:.9;margin-bottom:14px}.hero h1{font-size:clamp(34px,5vw,58px);line-height:1.1;margin:0 0 18px}.hero p{font-size:18px;max-width:720px;margin:0 0 20px;opacity:.94}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}.metric-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:26px}.metric{background:rgba(255,255,255,.15);padding:16px;border-radius:18px}.metric strong{display:block;font-size:24px}.hero-card{background:#fff;color:var(--ink);border-radius:28px;padding:18px;box-shadow:var(--shadow)}
.video-card{position:relative;overflow:hidden;border-radius:22px;background:#111;box-shadow:var(--shadow)}.video-card video,.video-card img{width:100%;aspect-ratio:16/9;object-fit:cover}.play-badge{position:absolute;inset:0;display:grid;place-items:center;opacity:0;background:rgba(0,0,0,.32);transition:.25s}.play-badge span{width:74px;height:74px;border-radius:50%;background:#fff;color:var(--brand);display:grid;place-items:center;font-size:28px;transform:scale(.92);transition:.25s}.video-card:hover .play-badge,.video-card:focus-within .play-badge{opacity:1}.video-card:hover .play-badge span{transform:scale(1)}.video-meta{position:absolute;left:14px;right:14px;bottom:14px;color:#fff;display:flex;justify-content:space-between;font-size:14px;text-shadow:0 2px 10px rgba(0,0,0,.45)}
.section{padding:54px 0}.section-title{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:22px}.section-title h2{font-size:30px;margin:0}.section-title p{margin:4px 0 0;color:var(--muted)}.more{color:var(--brand);font-weight:800}.grid{display:grid;gap:18px}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-2{grid-template-columns:repeat(2,1fr)}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}.card h3{margin:0 0 10px;font-size:21px}.card p{color:var(--muted);margin:0 0 14px}.tag-row{display:flex;gap:8px;flex-wrap:wrap}.tag{display:inline-flex;border:1px solid #d7eef0;background:#eef8f8;color:var(--brand);border-radius:999px;padding:4px 10px;font-size:13px}.data-row{display:flex;gap:14px;flex-wrap:wrap;color:#526071;font-size:14px}.list{list-style:none;margin:14px 0 0;padding:0}.list li{padding:10px 0;border-top:1px solid var(--line)}
.content-card{overflow:hidden;padding:0}.content-card .body{padding:18px 20px 22px}.actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.action-btn{border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 11px;color:#465365;cursor:pointer}.action-btn:hover{border-color:var(--brand);color:var(--brand)}
.author{display:flex;gap:14px;align-items:center}.author img{width:72px;height:72px;border-radius:24px;object-fit:cover}.comment{border-left:4px solid var(--brand);padding-left:16px}.faq details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 18px;margin-bottom:12px}.faq summary{font-weight:800;cursor:pointer}.notice{background:#fff8ec;border:1px solid #f8d8a8;color:#805213;border-radius:18px;padding:18px}.json-panel{background:#0f172a;color:#d1e7ff;border-radius:22px;padding:18px;overflow:auto;font-size:13px;max-height:420px}.json-panel code{white-space:pre}
.page-title{padding:46px 0;background:#fff;border-bottom:1px solid var(--line)}.page-title h1{font-size:40px;margin:0 0 10px}.page-title p{color:var(--muted);margin:0;max-width:820px}.meta-line{display:flex;gap:12px;flex-wrap:wrap;margin-top:14px;color:#667085;font-size:14px}.article{background:#fff;border-radius:24px;box-shadow:var(--shadow);padding:28px;border:1px solid var(--line)}.article h2{margin-top:0}.steps{counter-reset:item}.steps li{counter-increment:item;list-style:none;margin:0 0 12px;padding:14px 14px 14px 54px;background:#f8fafc;border-radius:16px;position:relative}.steps li:before{content:counter(item);position:absolute;left:14px;top:14px;width:28px;height:28px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:800}
.footer{background:#13262b;color:#e9f5f6;padding:42px 0;margin-top:50px}.footer-grid{display:grid;grid-template-columns:1.2fr repeat(2,1fr);gap:22px}.footer a{color:#fff}.footer .logo-mark{box-shadow:none}.copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:18px;color:#b8cbcf;font-size:14px}
@media (max-width:900px){.hero-grid,.grid-3,.grid-2,.footer-grid{grid-template-columns:1fr}.metric-row{grid-template-columns:1fr}.section-title{align-items:flex-start;flex-direction:column}.topbar{align-items:flex-start}.search-box{flex-direction:column}.hero{padding-top:18px}.footer{margin-top:20px}}