/* ===== WorkBuddy 教程站 · 统一样式 ===== */
:root{
  --blue:#2563eb; --blue-d:#1d4ed8; --blue-l:#3b82f6;
  --ink:#0f172a; --sub:#475569; --line:#e2e8f0;
  --bg:#f8fafc; --card:#ffffff; --gold:#f59e0b;
  --ad:#fff7ed; --ad-line:#fdba74;
  --maxw:920px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased}

/* 顶部导航 */
.topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line)}
.topbar .bar{display:flex;align-items:center;justify-content:space-between;height:56px;
  max-width:var(--maxw);margin:0 auto;padding:0 16px}
.brand{font-weight:800;font-size:18px;color:var(--blue);text-decoration:none;display:flex;align-items:center;gap:8px}
.brand .dot{width:26px;height:26px;border-radius:7px;background:linear-gradient(135deg,var(--blue),var(--blue-l));
  color:#fff;display:grid;place-items:center;font-size:13px;font-weight:900}
.navlinks{display:flex;gap:18px;font-size:14px}
.navlinks a{color:var(--sub);text-decoration:none}
.navlinks a:hover{color:var(--blue)}

/* Hero */
.hero{background:linear-gradient(135deg,#1e3a8a,#2563eb);color:#fff;padding:46px 16px 40px;text-align:center}
.hero h1{font-size:30px;font-weight:800;letter-spacing:.5px;margin-bottom:10px}
.hero p{font-size:16px;opacity:.92;max-width:640px;margin:0 auto}
.hero .tags{margin-top:16px;display:flex;gap:8px;justify-content:center;flex-wrap:wrap}
.hero .tags span{background:rgba(255,255,255,.16);padding:4px 12px;border-radius:999px;font-size:13px}

/* 容器 */
.inner{max-width:var(--maxw);margin:0 auto;padding:0 16px}
section{padding:34px 0}
h2.sec{font-size:22px;margin-bottom:6px;display:flex;align-items:center;gap:9px}
h2.sec .n{background:var(--blue);color:#fff;width:28px;height:28px;border-radius:8px;display:grid;place-items:center;font-size:15px;flex:none}
.sec-sub{color:var(--sub);font-size:14px;margin-bottom:18px}

/* 教程卡片网格 */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px;
  text-decoration:none;color:inherit;transition:.18s;display:flex;flex-direction:column;gap:8px}
.card:hover{transform:translateY(-3px);box-shadow:0 10px 24px rgba(37,99,235,.12);border-color:var(--blue-l)}
.card .lv{font-size:12px;font-weight:700;color:var(--blue);letter-spacing:.5px}
.card h3{font-size:17px;line-height:1.4}
.card p{font-size:13.5px;color:var(--sub);flex:1}
.card .go{font-size:13px;color:var(--blue);font-weight:600;margin-top:4px}

/* 文章页 */
.breadcrumb{font-size:13px;color:var(--sub);padding:16px 0 0}
.breadcrumb a{color:var(--sub);text-decoration:none}
.breadcrumb a:hover{color:var(--blue)}
.article{max-width:760px;margin:0 auto;padding:24px 16px 60px}
.article .head{margin-bottom:22px}
.article .kicker{color:var(--blue);font-weight:700;font-size:13px;letter-spacing:.5px}
.article h1{font-size:27px;line-height:1.35;margin:8px 0 10px}
.article .lead{font-size:16px;color:var(--sub);background:#eff6ff;border-left:4px solid var(--blue);
  padding:12px 16px;border-radius:0 10px 10px 0;margin-top:10px}
.article h2{font-size:21px;margin:34px 0 12px;padding-top:10px;border-top:1px solid var(--line)}
.article h3{font-size:17px;margin:22px 0 8px;color:var(--blue-d)}
.article p{margin:12px 0}
.article ul,.article ol{margin:12px 0 12px 22px}
.article li{margin:7px 0}
.article strong{color:var(--ink)}
.article code{background:#f1f5f9;padding:2px 6px;border-radius:5px;font-size:14px;color:#be123c}
.article table{width:100%;border-collapse:collapse;margin:16px 0;font-size:14.5px}
.article th,.article td{border:1px solid var(--line);padding:9px 12px;text-align:left}
.article th{background:#f1f5f9;font-weight:700}
.tip{background:#f0fdf4;border:1px solid #bbf7d0;color:#15803d;padding:12px 16px;border-radius:10px;margin:16px 0;font-size:14.5px}
.warn{background:#fef2f2;border:1px solid #fecaca;color:#b91c1c;padding:12px 16px;border-radius:10px;margin:16px 0;font-size:14.5px}

/* FAQ */
.faq{background:#f8fafc;border:1px solid var(--line);border-radius:14px;padding:8px 20px;margin:26px 0}
.faq h2{margin-top:18px}
.faq details{border-bottom:1px solid var(--line);padding:14px 0}
.faq details:last-child{border-bottom:none}
.faq summary{font-weight:700;cursor:pointer;list-style:none;position:relative;padding-right:24px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:0;top:0;font-size:20px;color:var(--blue)}
.faq details[open] summary::after{content:"−"}
.faq p{margin:10px 0 4px;color:var(--sub);font-size:15px}

/* CPS 广告卡 */
.ad{background:var(--ad);border:1px solid var(--ad-line);border-radius:14px;padding:18px 20px;margin:30px 0;text-align:center}
.ad .lab{display:inline-block;font-size:11px;font-weight:700;color:#c2410c;background:#fed7aa;
  padding:2px 8px;border-radius:5px;margin-bottom:8px;letter-spacing:.5px}
.ad h3{font-size:18px;margin-bottom:6px;color:#9a3412}
.ad p{font-size:14px;color:#7c2d12;margin-bottom:12px}
.ad a.btn{display:inline-block;background:linear-gradient(135deg,#f97316,#ea580c);color:#fff;font-weight:700;
  text-decoration:none;padding:11px 26px;border-radius:10px;font-size:15px}
.ad a.btn:hover{filter:brightness(1.06)}

/* B站引导卡 */
.bili{background:#fff0f5;border:1px solid #ffc2d6;border-radius:14px;padding:20px 22px;margin:30px 0;text-align:center}
.bili .lab{display:inline-block;font-size:11px;font-weight:700;color:#fff;background:#fb7299;
  padding:2px 10px;border-radius:999px;margin-bottom:8px;letter-spacing:.5px}
.bili h3{font-size:18px;margin-bottom:6px;color:#c2185b}
.bili p{font-size:14px;color:#6b3a4f;margin-bottom:12px}
.bili-btn{display:inline-block;background:linear-gradient(135deg,#fb7299,#e85d8a);color:#fff;font-weight:700;
  text-decoration:none;padding:11px 26px;border-radius:10px;font-size:15px}
.bili-btn:hover{filter:brightness(1.06)}

/* 页脚 */
.foot{background:var(--ink);color:#cbd5e1;padding:34px 16px;font-size:13.5px;margin-top:20px}
.foot .inner{display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between}
.foot a{color:#93c5fd;text-decoration:none}
.foot .col h4{color:#fff;font-size:14px;margin-bottom:10px}
.foot .col a{display:block;margin:6px 0}
.foot .copy{text-align:center;margin-top:24px;padding-top:18px;border-top:1px solid #334155;color:#94a3b8}

/* 响应式 */
@media(max-width:600px){
  .hero h1{font-size:23px}
  .article h1{font-size:22px}
  .navlinks{display:none}
  .grid{grid-template-columns:1fr}
}