/* ==========================================================================
   Site 2: longmao.help - Documentation & Knowledge Base Theme (Cyber Blue)
   ========================================================================== */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  --accent: #06b6d4;
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --radius-lg: 12px;
  --radius-md: 8px;
}
* { margin:0; padding:0; box-sizing:border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; color:var(--text-main); background:var(--bg-page); line-height:1.6; }
a { text-decoration:none; color:inherit; }
.doc-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Header */
.doc-header { position:sticky; top:0; background:rgba(255,255,255,0.96); backdrop-filter:blur(8px); border-bottom:1px solid var(--border); z-index:1000; }
.doc-header .doc-container { display:flex; justify-content:space-between; align-items:center; height:68px; }
.doc-brand { display:flex; align-items:center; gap:10px; font-size:1.15rem; color:#0f172a; }
.doc-brand img { border-radius:8px; }
.doc-brand-title b { color:var(--primary); }
.doc-nav { display:flex; align-items:center; gap:22px; list-style:none; }
.doc-nav a { font-size:0.92rem; font-weight:600; color:var(--text-muted); }
.doc-nav a:hover, .doc-nav a.active { color:var(--primary); }
.doc-actions { display:flex; gap:10px; }
.doc-btn { padding:7px 16px; border-radius:6px; font-size:0.88rem; font-weight:600; cursor:pointer; display:inline-flex; align-items:center; gap:6px; border:1px solid transparent; }
.doc-btn-outline { background:#ffffff; border-color:var(--border); color:var(--text-main); }
.doc-btn-primary { background:var(--primary); color:#ffffff; }

/* Search Hero */
.doc-hero { padding: 60px 0 50px; text-align:center; background:linear-gradient(180deg, #eff6ff 0%, #f8fafc 100%); border-bottom:1px solid var(--border); }
.doc-hero h1 { font-size:2.6rem; font-weight:800; color:#0f172a; margin-bottom:14px; }
.doc-hero h1 span { color:var(--primary); }
.doc-hero p { font-size:1.05rem; color:var(--text-muted); max-width:640px; margin:0 auto 28px; }
.doc-search-box { max-width:620px; margin:0 auto 20px; position:relative; }
.doc-search-input { width:100%; height:54px; border-radius:999px; border:2px solid #cbd5e1; padding:0 50px 0 24px; font-size:1rem; outline:none; transition:all 0.2s; background:#ffffff; box-shadow:0 8px 24px rgba(0,0,0,0.03); }
.doc-search-input:focus { border-color:var(--primary); box-shadow:0 0 0 4px rgba(37,99,235,0.12); }
.doc-search-icon { position:absolute; right:20px; top:17px; font-size:1.1rem; color:#94a3b8; }
.doc-quick-tags { display:flex; justify-content:center; gap:10px; flex-wrap:wrap; font-size:0.85rem; color:var(--text-muted); }
.doc-tag { background:#ffffff; border:1px solid var(--border); padding:3px 12px; border-radius:999px; cursor:pointer; }
.doc-tag:hover { border-color:var(--primary); color:var(--primary); }

/* Quick Cards */
.quick-cards-grid { display:grid; grid-template-columns:repeat(4, 1fr); gap:20px; margin-top:-25px; margin-bottom:50px; }
.q-card { background:#ffffff; border:1px solid var(--border); border-radius:var(--radius-lg); padding:24px 20px; box-shadow:0 6px 18px rgba(0,0,0,0.03); transition:all 0.25s ease; }
.q-card:hover { transform:translateY(-4px); border-color:var(--primary); box-shadow:0 12px 28px rgba(37,99,235,0.08); }
.q-icon { width:44px; height:44px; border-radius:10px; background:#eff6ff; color:var(--primary); display:flex; align-items:center; justify-content:center; font-size:1.3rem; margin-bottom:14px; }
.q-card h3 { font-size:1.1rem; font-weight:700; margin-bottom:6px; }
.q-card p { font-size:0.85rem; color:var(--text-muted); line-height:1.5; }

/* 2-Column Sidebar Layout */
.portal-layout { display:grid; grid-template-columns:260px 1fr; gap:40px; margin-bottom:60px; }
.portal-sidebar { position:sticky; top:90px; height:fit-content; background:#ffffff; border:1px solid var(--border); border-radius:var(--radius-lg); padding:20px; }
.sb-group { margin-bottom:20px; }
.sb-group:last-child { margin-bottom:0; }
.sb-title { font-size:0.8rem; font-weight:800; color:#94a3b8; text-transform:uppercase; letter-spacing:1px; margin-bottom:10px; }
.sb-links { list-style:none; display:flex; flex-direction:column; gap:6px; }
.sb-links a { font-size:0.9rem; font-weight:600; color:var(--text-muted); padding:6px 10px; border-radius:6px; display:block; }
.sb-links a:hover, .sb-links a.active { background:#eff6ff; color:var(--primary); }

/* Right Content */
.portal-main { background:#ffffff; border:1px solid var(--border); border-radius:var(--radius-lg); padding:36px; box-shadow:0 6px 20px rgba(0,0,0,0.02); }
.portal-main h2 { font-size:1.7rem; font-weight:800; color:#0f172a; margin-bottom:16px; border-bottom:2px solid #eff6ff; padding-bottom:12px; }

/* Timeline Step Cards */
.timeline-list { display:flex; flex-direction:column; gap:20px; margin:24px 0 35px; }
.step-item { display:flex; gap:18px; }
.step-num { width:36px; height:36px; border-radius:50%; background:var(--primary); color:#ffffff; font-weight:800; display:flex; align-items:center; justify-content:center; flex-shrink:0; font-size:0.95rem; }
.step-body { flex-grow:1; background:#f8fafc; border:1px solid var(--border); border-radius:var(--radius-md); padding:16px 20px; }
.step-body h4 { font-size:1.05rem; font-weight:700; margin-bottom:6px; color:#0f172a; }
.step-body p { font-size:0.92rem; color:var(--text-muted); line-height:1.6; }

/* Download Matrix */
.dl-matrix { display:grid; grid-template-columns:repeat(2, 1fr); gap:16px; margin:24px 0; }
.dl-box { display:flex; align-items:center; justify-content:space-between; padding:16px 20px; border:1px solid var(--border); border-radius:8px; background:#f8fafc; }
.dl-left { display:flex; align-items:center; gap:14px; }
.dl-left i { font-size:1.8rem; color:var(--primary); }
.dl-name { font-weight:700; font-size:0.98rem; }
.dl-ver { font-size:0.8rem; color:var(--text-muted); }

/* Ecosystem */
.doc-ecosystem { background:#ffffff; border-top:1px solid var(--border); border-bottom:1px solid var(--border); padding:22px 0; }
.eco-title { font-size:0.9rem; font-weight:800; color:var(--primary); margin-bottom:10px; }
.eco-pills { display:flex; flex-wrap:wrap; gap:10px; }
.eco-pill { padding:6px 14px; background:#f8fafc; border:1px solid var(--border); border-radius:6px; font-size:0.85rem; font-weight:600; color:var(--text-main); }
.eco-pill:hover { border-color:var(--primary); color:var(--primary); }

/* Footer */
.doc-footer { background:#ffffff; padding:40px 0 25px; }
.df-wrapper { display:flex; justify-content:space-between; align-items:center; margin-bottom:20px; }
.df-links { display:flex; gap:16px; font-size:0.88rem; font-weight:600; color:var(--text-muted); }
.df-links a:hover { color:var(--primary); }
.df-bottom { text-align:center; font-size:0.82rem; color:#94a3b8; border-top:1px solid var(--border); padding-top:20px; }

/* Floating */
.doc-floating-dock { position:fixed; bottom:25px; right:25px; display:flex; flex-direction:column; gap:8px; z-index:999; }
.float-btn { width:42px; height:42px; border-radius:50%; background:#ffffff; border:1px solid var(--border); display:flex; align-items:center; justify-content:center; color:var(--text-main); box-shadow:0 4px 12px rgba(0,0,0,0.08); }
.float-action-btn { padding:10px 18px; border-radius:999px; background:var(--primary); color:#ffffff; font-size:0.85rem; font-weight:700; box-shadow:0 6px 18px rgba(37,99,235,0.3); display:flex; align-items:center; gap:6px; }

@media (max-width:992px) {
  .quick-cards-grid { grid-template-columns:1fr 1fr; }
  .portal-layout { grid-template-columns:1fr; }
  .portal-sidebar { display:none; }
  .dl-matrix { grid-template-columns:1fr; }
}
@media (max-width:600px) {
  .doc-nav { display:none; }
  .quick-cards-grid { grid-template-columns:1fr; }
  .df-wrapper { flex-direction:column; gap:15px; text-align:center; }
}