:root{--brand:#0066e0;--accent:#d2433f;--ink:#1f2937;--muted:#6b7280;--line:#e5e7eb;--bg:#f6f8fb;--card:#fff}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC",sans-serif;color:var(--ink);background:var(--bg);line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}

.top{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.top .wrap{max-width:1400px;padding:0 30px;display:flex;align-items:center;height:70px;gap:24px}
.logo{font-weight:800;color:var(--accent);font-size:15px;line-height:1.35;white-space:nowrap;width:165px;margin-right:26px;flex:none}
.logo:hover{text-decoration:none}
.top nav{display:flex;gap:0;flex:1;overflow-x:auto;height:100%}
.top nav a{color:#333;font-size:16px;white-space:nowrap;padding:0 20px;line-height:70px}
.top nav a:hover{text-decoration:none;color:var(--brand)}
.top nav a.on{color:var(--brand);box-shadow:inset 0 -1px 0 var(--brand)}
.login{color:var(--accent);font-size:18px;white-space:nowrap;padding-left:24px;background:url(https://oss-cdn.wsjsq.net/wsjsq_website/static/home/images/link.c25e818d.png) no-repeat left center/18px}
.cta{background:var(--accent);color:#fff;padding:9px 25px;border-radius:20px;font-size:15px;white-space:nowrap}
.cta:hover{text-decoration:none;opacity:.9}

.crumb{font-size:13px;color:var(--muted);padding:18px 0 0}
.crumb a{color:var(--muted)}

.hero{background:#fff;padding:36px 0 26px}
.hero h1{font-size:32px;line-height:1.3}
.hero p{color:var(--muted);margin-top:8px;font-size:16px}

.topics{position:sticky;top:70px;z-index:9;background:#fff;border-bottom:1px solid var(--line)}
.topics .wrap{display:flex;gap:8px;overflow-x:auto;padding-top:2px;padding-bottom:12px;scrollbar-width:none}
.topics .wrap::-webkit-scrollbar{display:none}
.topics a{flex:none;padding:5px 14px;border-radius:999px;background:var(--bg);color:var(--ink);font-size:14px;line-height:1.6}
.topics a:hover{text-decoration:none;color:var(--brand)}
.topics span{color:var(--muted);margin-left:6px;font-size:12px}

.group{padding:30px 0 6px;scroll-margin-top:120px}
.group-head{display:flex;align-items:baseline;gap:4px 14px;flex-wrap:wrap;margin-bottom:14px}
.group-head h2{font-size:22px;line-height:1.3}
.group-head p{color:var(--muted);font-size:14px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px}
.card{background:var(--card);border-radius:12px;padding:18px 20px;border:1px solid var(--line);display:flex;flex-direction:column;gap:6px;transition:border-color .2s}
.card:hover{border-color:var(--brand);text-decoration:none}
.card h3{font-size:17px;color:var(--ink);line-height:1.4;font-weight:700}
.card p{color:var(--muted);font-size:14px;line-height:1.65;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3;overflow:hidden}
main.wrap{padding-bottom:40px}

article{background:var(--card);border-radius:16px;padding:36px 40px;margin:16px 0 40px;border:1px solid var(--line)}
article h1{font-size:30px;line-height:1.35;margin-bottom:8px}
article .meta{color:var(--muted);font-size:13px;margin-bottom:24px}
article h2{font-size:22px;margin:34px 0 12px;padding-left:12px;border-left:4px solid var(--brand);line-height:1.4}
article h3{font-size:17px;margin:22px 0 8px}
article p,article li{font-size:16px}
article p{margin:10px 0}
article ol,article ul{padding-left:22px;margin:10px 0}
article li{margin:6px 0}
article b{color:#111}
.lead{font-size:17px;color:#374151;background:#f0f7ff;border-radius:10px;padding:14px 18px}
.tip{background:#fff7ed;border-left:4px solid var(--accent);border-radius:8px;padding:12px 16px;margin:16px 0;font-size:15px}
.shots{display:flex;gap:20px;flex-wrap:wrap;justify-content:center;margin:20px 0}
.shots figure{width:240px;text-align:center}
.shots img{border-radius:22px;border:6px solid #111827;box-shadow:0 10px 26px rgba(0,40,100,.15)}
.shots figcaption{font-size:13px;color:var(--muted);margin-top:8px}
table{width:100%;border-collapse:collapse;margin:14px 0;font-size:15px}
th,td{border:1px solid var(--line);padding:9px 12px;text-align:left;vertical-align:top}
th{background:#f8fafc}
.faq dt{font-weight:700;margin-top:16px}
.faq dd{margin:6px 0 0;color:#374151}
.more{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;margin-top:12px}
.more a{background:var(--bg);border-radius:10px;padding:12px 14px;font-size:15px;color:var(--ink)}
.more a.all{color:var(--brand)}
.end{background:linear-gradient(120deg,#0057c2,#0066e0);color:#fff;border-radius:14px;padding:24px;margin-top:32px;text-align:center}
.end b{color:#fff;font-size:18px;display:block;margin-bottom:10px}
.end .cta{display:inline-block;background:#fff;color:var(--brand)}

footer{border-top:1px solid var(--line);background:#fff;color:var(--muted);font-size:13px;padding:22px 0;text-align:center}
footer a{color:var(--muted);margin:0 8px}

@media (max-width:640px){
  .top .wrap{gap:10px;height:60px}
  .top .wrap{padding:0 16px}
  .logo{margin-right:4px;font-size:13px;width:auto}
  .top nav a{padding:0 8px;font-size:14px;line-height:60px}
  .top nav a:nth-child(n+4){display:none}
  .top .cta,.top .login{display:none}
  .hero{padding:24px 0 18px}
  .hero h1{font-size:24px}
  .topics{top:60px}
  .group{scroll-margin-top:110px}
  .grid{gap:10px}
  .card{padding:14px 16px;gap:4px}
  .card p{-webkit-line-clamp:2}
  article{padding:22px 16px;border-radius:0;margin:12px -20px 24px}
  article h1{font-size:23px}
  article h2{font-size:19px}
  .shots figure{width:44%}
  .shots img{border-width:4px;border-radius:16px}
}