:root {
  --primary-color: #d97706;
  --primary-dark: #b45309;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-light: #94a3b8;
  --bg: #ffffff;
  --bg-light: #fffbeb;
  --bg-dark: #0f172a;
  --border: #e2e8f0;
  --shadow: rgba(15,23,42,0.08);
  --nav-height: 64px;
  --sidebar-width: 260px;
  --radius: 0.5rem;
  --radius-lg: 0.875rem;
  --font: 'Inter', sans-serif;
  --transition: 0.2s ease;
}
[data-theme="dark"] {
  --bg: #0f172a; --bg-light: #1e293b; --text-primary: #e2e8f0;
  --text-secondary: #94a3b8; --text-light: #64748b; --border: #334155; --shadow: rgba(0,0,0,0.4);
}
[data-theme="dark"] .navbar       { background: rgba(15,23,42,0.97); border-bottom-color: #334155; }
[data-theme="dark"] .sidebar      { background: #111827; border-right-color: #334155; }
[data-theme="dark"] .sidebar-link { color: #94a3b8; }
[data-theme="dark"] .sidebar-link:hover,
[data-theme="dark"] .sidebar-link.active { background: #1e293b; color: #e2e8f0; }
[data-theme="dark"] .sidebar-group-title { color: #64748b; }
[data-theme="dark"] .card         { background: #1e293b; border-color: #334155; }
[data-theme="dark"] .card h3      { color: #e2e8f0; }
[data-theme="dark"] .card p       { color: #94a3b8; }
[data-theme="dark"] .item-row     { background: #1e293b; border-color: #334155; }
[data-theme="dark"] .item-row h4  { color: #e2e8f0; }
[data-theme="dark"] .item-row p   { color: #94a3b8; }
[data-theme="dark"] .item-row:hover { border-color: var(--primary-color); }
[data-theme="dark"] .badge-soon   { background: #1e293b; color: #64748b; border-color: #334155; }
[data-theme="dark"] .section-hero { background: linear-gradient(135deg, #0a1628 0%, #1c1107 60%, #92400e 100%); }

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;font-size:16px;}
body{font-family:var(--font);color:var(--text-primary);background:var(--bg);line-height:1.6;overflow-x:hidden;}
a{text-decoration:none;color:inherit;}

.navbar{position:fixed;top:0;width:100%;z-index:200;height:var(--nav-height);background:rgba(255,255,255,0.97);border-bottom:1px solid var(--border);backdrop-filter:blur(10px);}
.nav-inner{max-width:1400px;margin:0 auto;padding:0 1.5rem;height:100%;display:flex;align-items:center;justify-content:space-between;gap:1rem;}
.nav-logo a{font-size:1.1rem;font-weight:700;color:var(--primary-color);}
.nav-logo span{font-weight:400;color:var(--text-secondary);}
.nav-links{display:flex;align-items:center;gap:0.25rem;}
.nav-links a{font-size:0.88rem;font-weight:500;color:var(--text-secondary);padding:0.35rem 0.75rem;border-radius:var(--radius);transition:all var(--transition);}
.nav-links a:hover,.nav-links a.active{background:#fef3c7;color:var(--primary-color);}
.nav-right{display:flex;align-items:center;gap:0.5rem;}
.nav-visit-main{font-size:0.82rem;font-weight:600;color:var(--primary-color);border:1px solid var(--primary-color);padding:0.3rem 0.85rem;border-radius:999px;transition:all var(--transition);}
.nav-visit-main:hover{background:var(--primary-color);color:white;}
.theme-toggle{width:34px;height:34px;border-radius:50%;border:1px solid var(--border);background:none;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--text-primary);font-size:0.85rem;transition:all var(--transition);}
.theme-toggle:hover{background:var(--primary-color);border-color:var(--primary-color);color:white;}
.hamburger{display:none;flex-direction:column;gap:4px;cursor:pointer;padding:4px;}
.hamburger span{width:22px;height:2px;background:var(--text-primary);border-radius:2px;transition:all var(--transition);}

.section-hero{background:linear-gradient(135deg,#0f172a 0%,#1c1107 60%,#d97706 100%);padding:calc(var(--nav-height) + 28px) 2rem 40px;min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;color:white;text-align:center;}
.section-hero h1{font-size:1.75rem;font-weight:700;margin-bottom:0.4rem;}
.section-hero p{font-size:0.95rem;color:#94a3b8;max-width:520px;}
.breadcrumb{font-size:0.8rem;color:#94a3b8;margin-bottom:0.6rem;display:flex;align-items:center;gap:0.35rem;justify-content:center;}
.breadcrumb a{color:#fcd34d;}
.breadcrumb a:hover{text-decoration:underline;}

.docs-layout{display:flex;min-height:100vh;}
.sidebar{width:var(--sidebar-width);min-width:var(--sidebar-width);background:var(--bg-light);border-right:1px solid var(--border);position:fixed;top:var(--nav-height);left:0;height:calc(100vh - var(--nav-height));overflow-y:auto;padding:1.25rem 0;transition:transform var(--transition);z-index:100;}
.sidebar-group{margin-bottom:1.5rem;}
.sidebar-group-title{font-size:0.7rem;font-weight:700;text-transform:uppercase;letter-spacing:0.08em;color:var(--text-light);padding:0 1.1rem;margin-bottom:0.35rem;}
.sidebar-link{display:flex;align-items:center;gap:0.6rem;font-size:0.875rem;color:var(--text-secondary);padding:0.4rem 1.1rem;transition:all var(--transition);border-left:3px solid transparent;}
.sidebar-link i{font-size:0.8rem;width:14px;text-align:center;color:var(--text-light);}
.sidebar-link:hover{background:#fef3c7;color:var(--primary-color);border-left-color:#fde68a;}
.sidebar-link:hover i,.sidebar-link.active i{color:var(--primary-color);}
.sidebar-link.active{background:#fef3c7;color:var(--primary-color);font-weight:600;border-left-color:var(--primary-color);}
.docs-main{margin-left:var(--sidebar-width);flex:1;min-width:0;padding:2rem 2.5rem 4rem;}

.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1.25rem;margin-bottom:2rem;}
.card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.5rem;box-shadow:0 2px 10px var(--shadow);transition:transform var(--transition),box-shadow var(--transition);}
.card:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(217,119,6,0.12);}
.card-icon{width:48px;height:48px;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;font-size:1.3rem;margin-bottom:1rem;}
.card h3{font-size:1.05rem;font-weight:700;color:var(--text-primary);margin-bottom:0.4rem;}
.card p{font-size:0.875rem;color:var(--text-secondary);line-height:1.6;margin-bottom:1rem;}
.card-tags{display:flex;flex-wrap:wrap;gap:0.35rem;margin-bottom:1rem;}
.card-tag{font-size:0.75rem;background:var(--bg-light);color:var(--text-secondary);border:1px solid var(--border);border-radius:999px;padding:0.15rem 0.6rem;}
.card-link{font-size:0.875rem;font-weight:600;color:var(--primary-color);display:inline-flex;align-items:center;gap:0.35rem;transition:gap var(--transition);}
.card-link:hover{gap:0.6rem;}

.item-row{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.1rem 1.4rem;margin-bottom:0.75rem;display:flex;align-items:flex-start;justify-content:space-between;gap:1rem;transition:border-color var(--transition),box-shadow var(--transition);}
.item-row:hover{border-color:var(--primary-color);box-shadow:0 2px 10px rgba(217,119,6,0.08);}
.item-row-body{flex:1;}
.item-row h4{font-size:0.95rem;font-weight:600;color:var(--text-primary);margin-bottom:0.2rem;}
.item-row p{font-size:0.85rem;color:var(--text-secondary);}
.item-row-meta{display:flex;flex-wrap:wrap;gap:0.4rem;align-items:center;flex-shrink:0;}

.badge-soon{font-size:0.72rem;font-weight:600;padding:0.2rem 0.6rem;border-radius:999px;background:#f1f5f9;color:#94a3b8;border:1px solid var(--border);white-space:nowrap;}
.content-group{margin-bottom:2.5rem;}
.content-group-title{font-size:0.8rem;font-weight:700;text-transform:uppercase;letter-spacing:0.06em;color:var(--text-light);margin-bottom:0.85rem;padding-bottom:0.5rem;border-bottom:1px solid var(--border);}

.docs-footer{background:var(--bg-dark);color:#94a3b8;padding:1.5rem;text-align:center;font-size:0.85rem;}
.docs-footer a{color:#fcd34d;}

.mobile-bottom-nav{display:none;position:fixed;bottom:0;left:0;right:0;height:62px;background:var(--bg);border-top:1px solid var(--border);z-index:150;padding-bottom:env(safe-area-inset-bottom,0);box-shadow:0 -4px 20px var(--shadow);}
.mobile-bottom-nav-inner{display:flex;height:62px;align-items:stretch;}
.mobile-nav-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;color:var(--text-light);font-size:0.62rem;font-weight:500;padding:0.35rem 0.25rem;transition:color var(--transition),background var(--transition);min-height:44px;}
.mobile-nav-item i{font-size:1.1rem;}
.mobile-nav-item:hover,.mobile-nav-item.active{color:var(--primary-color);background:#fef3c7;}
[data-theme="dark"] .mobile-bottom-nav{background:#0f172a;border-top-color:#334155;}
[data-theme="dark"] .mobile-nav-item:hover,
[data-theme="dark"] .mobile-nav-item.active{background:#1e293b;color:#fbbf24;}

.sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.45);z-index:99;backdrop-filter:blur(2px);}
.sidebar-overlay.show{display:block;}

@media(max-width:1024px){
  .sidebar{transform:translateX(-260px);width:260px;}
  .sidebar.open{transform:translateX(0);box-shadow:4px 0 24px rgba(0,0,0,0.15);}
  .docs-main{margin-left:0;padding:1.75rem 2rem 3rem;}
  .hamburger{display:flex;}
}
@media(max-width:768px){
  .nav-links{display:none;}
  .docs-main{padding:1.5rem 1.25rem 5rem;}
  .section-hero{padding:32px 1.5rem;}
  .section-hero h1{font-size:1.5rem;}
}
@media(max-width:640px){
  .cat-grid{grid-template-columns:1fr;}
  .nav-visit-main{display:none;}
  .mobile-bottom-nav{display:block;}
}