/* ============================================================
   BRANDDNA DESIGN SYSTEM
   主色: Indigo #6366f1 + Violet #8b5cf6, 135deg 渐变
   排版: -apple-system, PingFang SC, Microsoft YaHei
   ============================================================ */
:root {
  --primary: #6366f1; --primary-dark: #4f46e5; --primary-light: #eef2ff;
  --accent: #8b5cf6; --gradient: linear-gradient(135deg, #6366f1, #7c3aed);
  --gradient-soft: linear-gradient(135deg, rgba(99,102,241,0.08), rgba(139,92,246,0.06));
  --success: #10b981; --success-light: #ecfdf5; --success-bg: #d1fae5;
  --warning: #f59e0b; --warning-light: #fffbeb; --warning-bg: #fde68a;
  --danger: #ef4444; --danger-light: #fef2f2; --danger-bg: #fecaca;
  --info: #3b82f6; --info-light: #eff6ff;
  --text: #0f172a; --text-secondary: #334155; --text-muted: #64748b; --text-light: #94a3b8;
  --border: #e2e8f0; --border-light: #f1f5f9;
  --bg: #ffffff; --bg-alt: #f8fafc; --bg-subtle: #f1f5f9;
  --sidebar-bg: #0f172a; --sidebar-text: #94a3b8; --sidebar-active: rgba(99,102,241,0.18);
  --radius-xs: 4px; --radius-sm: 8px; --radius: 12px;
  --radius-lg: 16px; --radius-xl: 20px; --radius-2xl: 24px;
  --radius-full: 9999px;
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.03);
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.06), 0 2px 4px -2px rgba(0,0,0,0.04);
  --shadow-md: 0 10px 15px -3px rgba(0,0,0,0.06), 0 4px 6px -4px rgba(0,0,0,0.04);
  --shadow-lg: 0 20px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.04);
  --shadow-xl: 0 25px 50px -12px rgba(0,0,0,0.12);
  --transition: 0.2s cubic-bezier(0.4,0,0.2,1);
  --transition-slow: 0.35s cubic-bezier(0.4,0,0.2,1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Segoe UI", "Microsoft YaHei", sans-serif;
  color: var(--text); background: var(--bg); line-height: 1.6;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
input, textarea, select, button { font-family: inherit; }

/* ---- shared buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 0.875rem; font-weight: 600; border: none; cursor: pointer;
  border-radius: var(--radius-sm); padding: 10px 22px;
  transition: all var(--transition); white-space: nowrap; background: none;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--gradient); color: #fff; box-shadow: 0 2px 8px rgba(99,102,241,0.3); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(99,102,241,0.4); }
.btn-outline { border: 2px solid var(--border); color: var(--primary-dark); }
.btn-outline:hover { border-color: var(--primary); background: var(--primary-light); }
.btn-lg { padding: 14px 32px; font-size: 1rem; border-radius: var(--radius); }
.btn-sm { padding: 6px 14px; font-size: 0.8rem; border-radius: var(--radius-xs); }
.btn-white { background: #fff; color: var(--primary-dark); font-weight: 700; }
.btn-white:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(255,255,255,0.35); }
.btn-ghost { color: var(--text-muted); }
.btn-ghost:hover { color: var(--primary); background: var(--bg-alt); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { box-shadow: 0 4px 12px rgba(16,185,129,0.3); }
.btn:disabled { opacity: 0.5; pointer-events: none; }

/* ---- badges ---- */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 0.72rem; font-weight: 600; padding: 3px 10px; border-radius: var(--radius-full);
}
.badge-success { background: var(--success-light); color: #059669; }
.badge-warning { background: var(--warning-light); color: #d97706; }
.badge-danger { background: var(--danger-light); color: #dc2626; }
.badge-info { background: var(--info-light); color: #2563eb; }
.badge-primary { background: var(--primary-light); color: var(--primary-dark); }

/* ---- cards ---- */
.card {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-xl); padding: 24px;
  transition: all var(--transition-slow);
}
.card:hover { box-shadow: var(--shadow-lg); border-color: transparent; }
.card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.card-title { font-size: 1rem; font-weight: 700; }

/* ---- stat cards ---- */
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 24px; }
.stat-card { text-align: center; padding: 20px 16px; }
.stat-card .val { font-size: 2rem; font-weight: 800; background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-card .lbl { font-size: 0.8rem; color: var(--text-muted); margin-top: 2px; }
.stat-card .chg { font-size: 0.75rem; font-weight: 600; margin-top: 2px; }
.stat-card .chg.up { color: var(--success); }
.stat-card .chg.down { color: var(--danger); }

/* ---- toast ---- */
.toast {
  position: fixed; top: 20px; right: 20px; z-index: 10000;
  background: var(--text); color: #fff; padding: 12px 24px;
  border-radius: var(--radius-sm); font-size: 0.85rem; font-weight: 600;
  opacity: 0; transform: translateY(-10px);
  transition: all var(--transition); pointer-events: none;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }

/* ---- Optimize Flow Modal ---- */
.opt-overlay {
  position: fixed; inset: 0; z-index: 10001;
  background: rgba(15,23,42,0.5); backdrop-filter: blur(4px);
  display: none; align-items: center; justify-content: center;
  opacity: 0; transition: opacity 0.25s;
}
.opt-overlay.show { display: flex; opacity: 1; }
.opt-modal {
  background: #fff; border-radius: var(--radius); width: 540px; max-width: 92vw;
  max-height: 88vh; overflow-y: auto; box-shadow: 0 20px 60px rgba(0,0,0,0.2);
  transform: scale(0.95); transition: transform 0.25s;
}
.opt-overlay.show .opt-modal { transform: scale(1); }
.opt-modal-head {
  padding: 20px 24px 16px; border-bottom: 1px solid var(--border-light);
  display: flex; align-items: center; gap: 12px;
}
.opt-modal-head .icon {
  width: 40px; height: 40px; border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1.1rem; flex-shrink: 0;
}
.opt-modal-head h3 { font-size: 1rem; font-weight: 700; margin: 0; }
.opt-modal-head .sub { font-size: 0.78rem; color: var(--text-muted); margin-top: 2px; }
.opt-modal-body { padding: 20px 24px; }
.opt-step {
  display: flex; gap: 14px; padding: 14px 0;
  border-bottom: 1px solid var(--border-light);
  position: relative;
}
.opt-step:last-child { border-bottom: none; }
.opt-step-icon {
  width: 36px; height: 36px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem; flex-shrink: 0;
  background: var(--bg-subtle); color: var(--text-muted);
  transition: all 0.3s;
}
.opt-step.active .opt-step-icon {
  background: var(--primary); color: #fff;
  animation: pulse 1s infinite;
}
.opt-step.done .opt-step-icon {
  background: var(--success); color: #fff;
}
.opt-step-content { flex: 1; }
.opt-step-title { font-size: 0.88rem; font-weight: 600; color: var(--text-muted); margin-bottom: 3px; }
.opt-step.active .opt-step-title { color: var(--primary); }
.opt-step.done .opt-step-title { color: var(--text); }
.opt-step-desc { font-size: 0.8rem; color: var(--text-muted); line-height: 1.5; }
.opt-step .opt-detail {
  margin-top: 8px; padding: 10px 12px; background: var(--bg-subtle);
  border-radius: var(--radius-sm); font-size: 0.78rem; color: var(--text-secondary);
  line-height: 1.6; display: none;
}
.opt-step.done .opt-detail { display: block; }
@keyframes pulse {
  0%,100% { box-shadow: 0 0 0 0 rgba(99,102,241,0.3); }
  50% { box-shadow: 0 0 0 8px rgba(99,102,241,0); }
}
.opt-modal-foot {
  padding: 16px 24px; border-top: 1px solid var(--border-light);
  display: flex; justify-content: space-between; align-items: center;
}
.opt-progress-bar {
  flex: 1; height: 6px; background: var(--bg-subtle); border-radius: 3px;
  margin-right: 16px; overflow: hidden;
}
.opt-progress-fill {
  height: 100%; background: linear-gradient(90deg, var(--primary), var(--success));
  border-radius: 3px; width: 0; transition: width 0.4s;
}

/* ---- deploy methods ---- */
.deploy-methods { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 14px; }
.deploy-method {
  padding: 14px; border: 2px solid var(--border); border-radius: var(--radius-sm);
  cursor: pointer; transition: all 0.2s; position: relative;
}
.deploy-method:hover { border-color: var(--primary); background: var(--primary-light); }
.deploy-method.active { border-color: var(--success); background: rgba(16,185,129,0.06); }
.deploy-method .dm-icon { font-size: 1.3rem; margin-bottom: 6px; }
.deploy-method .dm-name { font-size: 0.85rem; font-weight: 600; }
.deploy-method .dm-desc { font-size: 0.73rem; color: var(--text-muted); margin-top: 2px; }
.deploy-method .dm-status {
  position: absolute; top: 8px; right: 8px;
  font-size: 0.68rem; padding: 2px 8px; border-radius: 10px; font-weight: 600;
}
.deploy-method .dm-status.connected { background: rgba(16,185,129,0.12); color: var(--success); }
.deploy-method .dm-status.available { background: var(--bg-subtle); color: var(--text-muted); }

/* ---- tab bar ---- */
.tab-bar { display: flex; gap: 4px; background: var(--bg-alt); padding: 4px; border-radius: var(--radius-sm); margin-bottom: 20px; }
.tab-btn { padding: 8px 18px; border: none; background: transparent; border-radius: 6px; font-size: 0.83rem; font-weight: 600; color: var(--text-muted); cursor: pointer; transition: all var(--transition); }
.tab-btn.active { background: #fff; color: var(--primary-dark); box-shadow: var(--shadow-sm); }
.tab-btn:hover:not(.active) { color: var(--text-secondary); }

/* ---- data table ---- */
.data-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.data-table th { text-align: left; padding: 10px 14px; font-weight: 600; color: var(--text-muted); font-size: 0.78rem; border-bottom: 2px solid var(--border); }
.data-table td { padding: 12px 14px; border-bottom: 1px solid var(--border-light); }
.data-table tr:hover td { background: var(--bg-alt); }
.data-table .status-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; }
.data-table .status-dot.ok { background: var(--success); }
.data-table .status-dot.warn { background: var(--warning); }
.data-table .status-dot.err { background: var(--danger); }

/* ---- form ---- */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 0.82rem; font-weight: 600; color: var(--text-secondary); margin-bottom: 6px; }
.form-input, .form-textarea, .form-select {
  width: 100%; padding: 10px 14px; border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  font-size: 0.875rem; color: var(--text); background: var(--bg);
  transition: border-color var(--transition); outline: none;
}
.form-input:focus, .form-textarea:focus, .form-select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(99,102,241,0.08); }
.form-textarea { min-height: 80px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-hint { font-size: 0.75rem; color: var(--text-muted); margin-top: 4px; }

/* ---- status row ---- */
.status-row { display: flex; gap: 24px; margin-bottom: 20px; flex-wrap: wrap; }
.status-item { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; }
.status-dot-lg { width: 10px; height: 10px; border-radius: 50%; }
.status-dot-lg.green { background: var(--success); box-shadow: 0 0 0 3px rgba(16,185,129,0.15); }
.status-dot-lg.gray { background: var(--text-light); }

/* ---- alert card ---- */
.alert { padding: 16px 20px; border-radius: var(--radius); display: flex; gap: 14px; align-items: flex-start; font-size: 0.875rem; margin-bottom: 12px; }
.alert-danger { background: var(--danger-light); border: 1px solid var(--danger-bg); color: #991b1b; }
.alert-warning { background: var(--warning-light); border: 1px solid var(--warning-bg); color: #92400e; }
.alert i { margin-top: 2px; flex-shrink: 0; }

/* ---- code block ---- */
.code-block {
  background: #1e293b; color: #e2e8f0; border-radius: var(--radius);
  padding: 16px 20px; font-family: "SF Mono", "Fira Code", "Consolas", monospace;
  font-size: 0.8rem; line-height: 1.7; overflow-x: auto; white-space: pre-wrap;
  max-height: 400px; overflow-y: auto; position: relative;
}
.code-block .copy-btn {
  position: absolute; top: 10px; right: 10px;
  background: rgba(255,255,255,0.1); border: none; color: #fff;
  padding: 5px 12px; border-radius: var(--radius-xs); cursor: pointer;
  font-size: 0.75rem; font-weight: 600; transition: all var(--transition);
}
.code-block .copy-btn:hover { background: rgba(255,255,255,0.2); }

/* ---- detect card ---- */
.detect-card {
  border: 2px solid var(--border); border-radius: var(--radius-xl);
  padding: 20px; text-align: center; transition: all var(--transition-slow);
  min-height: 180px; display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.detect-card.scanned { border-color: var(--success); background: var(--success-light); }
.detect-card.warning { border-color: var(--warning); background: var(--warning-light); }
.detect-card.error { border-color: var(--danger); background: var(--danger-light); }
.detect-card .platform-name { font-weight: 700; font-size: 0.95rem; margin-bottom: 4px; }
.detect-card .platform-icon { font-size: 1.8rem; margin-bottom: 8px; opacity: 0.6; }
.detect-card.scanned .platform-icon { opacity: 1; }
.detect-card .result-badge { margin-top: 10px; }
.detect-card .detail-text { font-size: 0.78rem; color: var(--text-muted); margin-top: 6px; line-height: 1.5; }

/* ---- masonry / grid ---- */
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.grid-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }

/* ---- progress bar ---- */
.progress-bar { height: 8px; background: var(--bg-alt); border-radius: 4px; overflow: hidden; margin: 8px 0 4px; }
.progress-fill { height: 100%; border-radius: 4px; transition: width 0.6s ease; }
.progress-fill.green { background: var(--success); }
.progress-fill.yellow { background: var(--warning); }
.progress-fill.red { background: var(--danger); }
.progress-fill.purple { background: var(--gradient); }

/* ============================================================
   NAVIGATION — 玻璃态
   ============================================================ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 0 24px;
}
.nav-inner {
  max-width: 1280px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 64px; padding: 0 24px;
  background: rgba(255,255,255,0.88); backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid rgba(255,255,255,0.3); border-radius: var(--radius-full);
  margin-top: 12px; box-shadow: var(--shadow-sm);
}
.nav-brand { display: flex; align-items: center; gap: 8px; }
.nav-brand .icon {
  width: 34px; height: 34px; background: var(--gradient); border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center; color: #fff; font-size: 0.9rem;
}
.nav-brand span { font-size: 1.2rem; font-weight: 800; background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-links { display: flex; align-items: center; gap: 32px; list-style: none; }
.nav-links a { font-size: 0.85rem; font-weight: 500; color: var(--text-muted); transition: color var(--transition); }
.nav-links a:hover { color: var(--primary); }
.nav-links .btn-primary { color: #fff !important; }
.nav-links .btn-outline { color: var(--primary-dark) !important; }

/* ============================================================
   LANDING PAGE
   ============================================================ */
.landing { overflow-x: hidden; }
.section { max-width: 1280px; margin: 0 auto; padding: 80px 24px; }
.section-sm { max-width: 1280px; margin: 0 auto; padding: 40px 24px; }

/* Hero */
.hero { padding-top: 140px; text-align: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--primary-light); color: var(--primary-dark);
  font-size: 0.8rem; font-weight: 600; padding: 6px 16px;
  border-radius: var(--radius-full); margin-bottom: 24px;
}
.hero-badge .dot { width: 7px; height: 7px; background: var(--success); border-radius: 50%; animation: pulse-dot 2s infinite; }
@keyframes pulse-dot { 0%,100%{opacity:1;} 50%{opacity:0.3;} }
.hero h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 900; line-height: 1.2; max-width: 900px; margin: 0 auto 16px; }
.hero h1 .hl { background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero .subtitle { font-size: 1.1rem; color: var(--text-muted); max-width: 650px; margin: 0 auto 32px; line-height: 1.75; }
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* Demo input area */
.demo-area {
  max-width: 600px; margin: 40px auto 0; padding: 24px;
  background: var(--bg); border: 2px dashed var(--primary);
  border-radius: var(--radius-xl); text-align: center;
}
.demo-area .label { font-size: 0.82rem; font-weight: 700; color: var(--primary-dark); margin-bottom: 12px; }
.demo-area .input-row { display: flex; gap: 10px; }
.demo-area .input-row input {
  flex: 1; padding: 12px 16px; border: 2px solid var(--border); border-radius: var(--radius);
  font-size: 0.95rem; outline: none; transition: border-color var(--transition);
}
.demo-area .input-row input:focus { border-color: var(--primary); }

/* Feature cards */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature-card {
  padding: 32px 24px; border-radius: var(--radius-xl); background: var(--bg);
  border: 1px solid var(--border); transition: all var(--transition-slow);
  position: relative; overflow: hidden;
}
.feature-card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--gradient); transform: scaleX(0); transition: transform var(--transition-slow); }
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-xl); border-color: transparent; }
.feature-card:hover::before { transform: scaleX(1); }
.feature-card .f-icon { width: 44px; height: 44px; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 1.2rem; margin-bottom: 16px; }
.feature-card .f-icon.i1 { background: var(--primary-light); color: var(--primary); }
.feature-card .f-icon.i2 { background: #fef3c7; color: #d97706; }
.feature-card .f-icon.i3 { background: #d1fae5; color: #059669; }
.feature-card .f-icon.i4 { background: #fce7f3; color: #db2777; }
.feature-card .f-icon.i5 { background: #e0f2fe; color: #0284c7; }
.feature-card .f-icon.i6 { background: #fef3c7; color: #d97706; }
.feature-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; }

/* Section title */
.section-title { text-align: center; margin-bottom: 48px; }
.section-title .tag { display: inline-block; font-size: 0.78rem; font-weight: 700; color: var(--primary); background: var(--primary-light); padding: 4px 14px; border-radius: var(--radius-full); margin-bottom: 12px; }
.section-title h2 { font-size: 2rem; font-weight: 800; margin-bottom: 8px; }
.section-title p { font-size: 1rem; color: var(--text-muted); max-width: 600px; margin: 0 auto; }

/* vs GEO */
.vs-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.vs-box { padding: 40px 32px; border-radius: var(--radius-xl); }
.vs-box.geo { background: var(--danger-light); border: 2px solid var(--danger-bg); }
.vs-box.bdna { background: var(--success-light); border: 2px solid var(--success-bg); }
.vs-box h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }
.vs-box ul { list-style: none; }
.vs-box li { font-size: 0.875rem; padding: 8px 0; display: flex; align-items: flex-start; gap: 8px; }
.vs-box.geo li { color: #991b1b; }
.vs-box.bdna li { color: #065f46; }

/* Flywheel */
.flywheel { display: flex; align-items: center; justify-content: center; gap: 0; flex-wrap: wrap; }
.fw-step { display: flex; align-items: center; }
.fw-node { width: 140px; text-align: center; }
.fw-icon { width: 56px; height: 56px; border-radius: var(--radius); display: flex; align-items: center; justify-content: center; font-size: 1.3rem; margin: 0 auto 10px; color: #fff; }
.fw-icon.s1 { background: linear-gradient(135deg, #6366f1, #8b5cf6); }
.fw-icon.s2 { background: linear-gradient(135deg, #3b82f6, #06b6d4); }
.fw-icon.s3 { background: linear-gradient(135deg, #10b981, #059669); }
.fw-icon.s4 { background: linear-gradient(135deg, #f59e0b, #f97316); }
.fw-icon.s5 { background: linear-gradient(135deg, #ec4899, #8b5cf6); }
.fw-node .lbl { font-size: 0.82rem; font-weight: 700; color: var(--text); }
.fw-node .dsc { font-size: 0.7rem; color: var(--text-muted); margin-top: 2px; }
.fw-arrow { font-size: 1.2rem; color: var(--text-light); margin: 0 10px; flex-shrink: 0; }

/* Case studies */
.case-card {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-xl); padding: 28px;
  transition: all var(--transition-slow);
}
.case-card:hover { box-shadow: var(--shadow-lg); }
.case-card .case-header { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.case-card .case-avatar { width: 48px; height: 48px; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 0.95rem; color: #fff; }
.case-card .case-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 16px 0; }
.case-card .case-stat { text-align: center; padding: 8px; background: var(--bg-alt); border-radius: var(--radius-sm); }
.case-card .case-stat .cs-val { font-size: 1.1rem; font-weight: 800; }
.case-card .case-stat .cs-lbl { font-size: 0.7rem; color: var(--text-muted); }
.case-card .case-quote { font-style: italic; color: var(--text-muted); font-size: 0.83rem; border-left: 3px solid var(--primary); padding-left: 12px; margin-top: 12px; }

/* Pricing */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.pricing-card {
  padding: 36px 28px; border: 2px solid var(--border); border-radius: var(--radius-xl);
  text-align: center; transition: all var(--transition-slow); background: var(--bg);
}
.pricing-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-xl); }
.pricing-card.featured { border-color: var(--primary); position: relative; }
.pricing-card.featured::after { content: "推荐"; position: absolute; top: -13px; left: 50%; transform: translateX(-50%); background: var(--gradient); color: #fff; font-size: 0.75rem; font-weight: 700; padding: 4px 18px; border-radius: var(--radius-full); }
.pricing-card .plan { font-size: 1.1rem; font-weight: 700; margin-bottom: 4px; }
.pricing-card .plan-desc { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 20px; }
.pricing-card .price { font-size: 2.5rem; font-weight: 900; }
.pricing-card .price small { font-size: 1rem; font-weight: 500; color: var(--text-muted); }
.pricing-card ul { list-style: none; text-align: left; margin: 24px 0 28px; }
.pricing-card li { font-size: 0.85rem; padding: 6px 0; color: var(--text-muted); display: flex; align-items: center; gap: 8px; }
.pricing-card li i { color: var(--success); font-size: 0.7rem; flex-shrink: 0; }

/* CTA */
.cta { text-align: center; padding: 80px 24px; }
.cta-inner { background: linear-gradient(135deg, #1e1b4b, #312e81); border-radius: var(--radius-2xl); padding: 60px 40px; color: #fff; max-width: 900px; margin: 0 auto; }
.cta-inner h2 { font-size: 2rem; font-weight: 800; margin-bottom: 12px; }
.cta-inner p { font-size: 1rem; opacity: 0.85; margin-bottom: 28px; line-height: 1.7; }

/* Footer */
.footer { text-align: center; padding: 40px; border-top: 1px solid var(--border); font-size: 0.8rem; color: var(--text-muted); }

/* ============================================================
   LOGIN PAGE
   ============================================================ */
.login-page { display: flex; min-height: 100vh; }
.login-left {
  flex: 1; background: linear-gradient(135deg, #312e81, #4f46e5, #6366f1);
  display: flex; align-items: center; justify-content: center; padding: 60px;
  position: relative; overflow: hidden;
}
.login-left::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 30% 70%, rgba(139,92,246,0.3) 0%, transparent 60%),
              radial-gradient(circle at 70% 20%, rgba(99,102,241,0.2) 0%, transparent 50%);
}
.login-left-inner { position: relative; z-index: 1; text-align: center; color: #fff; max-width: 400px; }
.login-left-inner h2 { font-size: 1.8rem; font-weight: 800; margin-bottom: 12px; }
.login-left-inner p { font-size: 0.95rem; opacity: 0.85; line-height: 1.7; margin-bottom: 24px; }
.login-left-inner .mini-fw { display: flex; align-items: center; justify-content: center; gap: 8px; }
.login-left-inner .mini-fw i { font-size: 0.7rem; opacity: 0.5; }
.login-left-inner .mini-dot { width: 36px; height: 36px; border-radius: 50%; background: rgba(255,255,255,0.2); display: flex; align-items: center; justify-content: center; font-size: 0.8rem; border: 2px solid rgba(255,255,255,0.25); }
.login-right { flex: 1; display: flex; align-items: center; justify-content: center; padding: 60px; background: var(--bg); }
.login-form { width: 100%; max-width: 400px; }
.login-form h1 { font-size: 1.6rem; font-weight: 800; margin-bottom: 4px; }
.login-form .subtext { color: var(--text-muted); font-size: 0.875rem; margin-bottom: 32px; }
.login-form .input-icon { position: relative; }
.login-form .input-icon i { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--text-light); font-size: 0.9rem; }
.login-form .input-icon input { padding-left: 40px; }
.login-form .forgot { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; font-size: 0.82rem; }
.login-form .forgot a { color: var(--primary); font-weight: 600; }
.login-form .divider { display: flex; align-items: center; gap: 12px; margin: 24px 0; color: var(--text-muted); font-size: 0.78rem; }
.login-form .divider::before, .login-form .divider::after { content: ""; flex: 1; height: 1px; background: var(--border); }

/* ============================================================
   DASHBOARD
   ============================================================ */
.dashboard { display: flex; min-height: 100vh; }
.sidebar {
  width: 240px; min-width: 240px; background: var(--sidebar-bg);
  display: flex; flex-direction: column; padding: 20px 0; position: fixed;
  top: 0; left: 0; bottom: 0; z-index: 100;
}
.sidebar-brand { padding: 8px 20px 24px; }
.sidebar-brand a { display: flex; align-items: center; gap: 8px; font-size: 1.1rem; font-weight: 800; color: #fff; }
.sidebar-brand .icon { width: 32px; height: 32px; background: var(--gradient); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 0.85rem; }
.sidebar-nav { flex: 1; padding: 0 12px; display: flex; flex-direction: column; gap: 2px; }
.nav-item {
  display: flex; align-items: center; gap: 10px; padding: 10px 14px;
  border-radius: var(--radius-sm); color: var(--sidebar-text);
  font-size: 0.85rem; font-weight: 500; cursor: pointer;
  transition: all var(--transition); border: none; background: none; width: 100%;
  text-align: left; font-family: inherit;
}
.nav-item:hover { color: #fff; background: rgba(255,255,255,0.05); }
.nav-item.active { color: #fff; background: var(--sidebar-active); font-weight: 600; }
.nav-item .count {
  margin-left: auto; background: var(--danger); color: #fff;
  font-size: 0.68rem; padding: 1px 7px; border-radius: var(--radius-full); font-weight: 700;
}
.nav-group-label {
  font-size: 0.68rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.06em; color: rgba(255,255,255,0.25);
  padding: 14px 14px 6px;
}
.nav-group-label:first-child { padding-top: 4px; }
/* Step guidance bar */
.step-guide {
  background: linear-gradient(135deg, rgba(99,102,241,0.08), rgba(139,92,246,0.04));
  border: 1px solid rgba(99,102,241,0.15);
  border-radius: var(--radius-lg); padding: 14px 20px; margin-bottom: 24px;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}
.step-guide .sg-text { font-size: 0.85rem; color: var(--text-secondary); flex: 1; min-width: 200px; }
.step-guide .sg-steps { display: flex; gap: 8px; flex-wrap: wrap; }
.sg-step {
  display: flex; align-items: center; gap: 6px; padding: 6px 12px;
  border-radius: var(--radius-sm); font-size: 0.78rem; font-weight: 600;
  background: var(--bg); border: 1px solid var(--border); color: var(--text-muted);
  transition: all var(--transition);
}
.sg-step.done { background: var(--success-light); border-color: var(--success-bg); color: var(--success); }
.sg-step.current { background: var(--primary-light); border-color: var(--primary); color: var(--primary); }
.sidebar-footer { padding: 16px 20px; border-top: 1px solid rgba(255,255,255,0.06); }
.sidebar-footer .user-info { display: flex; align-items: center; gap: 10px; }
.sidebar-footer .avatar { width: 34px; height: 34px; border-radius: 50%; background: var(--gradient); display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 700; font-size: 0.8rem; }
.sidebar-footer .user-name { font-size: 0.82rem; color: #fff; font-weight: 600; }
.sidebar-footer .user-plan { font-size: 0.7rem; color: var(--sidebar-text); }
.sidebar-logout { margin-left: auto; color: rgba(255,255,255,0.4); font-size: 0.95rem; transition: color 0.2s; display: flex; align-items: center; }
.sidebar-logout:hover { color: rgba(255,255,255,0.85); }

.main-content { flex: 1; margin-left: 240px; padding: 28px 32px; background: var(--bg-alt); min-height: 100vh; }
.main-content .page-header { margin-bottom: 24px; }
.main-content .page-header h2 { font-size: 1.5rem; font-weight: 800; }
.main-content .page-header .breadcrumb { font-size: 0.8rem; color: var(--text-muted); margin-top: 2px; }

/* panel */
.panel { display: none; }
.panel.active { display: block; }

/* overview specific */
.overview-chart-row { display: grid; grid-template-columns: 1.5fr 1fr; gap: 20px; margin-bottom: 24px; }
.activity-list { list-style: none; }
.activity-list li { padding: 10px 0; border-bottom: 1px solid var(--border-light); font-size: 0.83rem; display: flex; align-items: center; gap: 10px; color: var(--text-secondary); }
.activity-list li:last-child { border-bottom: none; }
.activity-list .time { font-size: 0.75rem; color: var(--text-muted); white-space: nowrap; }

/* detect grid */
.detect-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin-bottom: 24px; }

/* format sub-tabs */
.format-subtabs { display: flex; gap: 4px; margin-bottom: 16px; }
.fst-btn { padding: 6px 14px; border: 1px solid var(--border); background: var(--bg); border-radius: var(--radius-xs); font-size: 0.78rem; font-weight: 600; cursor: pointer; color: var(--text-muted); transition: all var(--transition); }
.fst-btn:hover { border-color: var(--primary); color: var(--primary); }
.fst-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* managed page preview */
.managed-preview {
  background: var(--success-light); border: 2px solid var(--success-bg);
  border-radius: var(--radius); padding: 16px 20px;
  display: flex; align-items: center; gap: 12px; margin-bottom: 16px;
}
.managed-preview .url { font-family: monospace; font-size: 0.85rem; font-weight: 700; color: #065f46; }
.managed-preview .status-tag { font-size: 0.72rem; background: var(--success); color: #fff; padding: 2px 10px; border-radius: var(--radius-full); }

/* completeness inline */
.completeness-inline {
  display: flex; align-items: center; gap: 12px; padding: 6px 14px;
  background: var(--success-light); border: 1px solid rgba(16,185,129,0.2);
  border-radius: var(--radius-sm); margin-bottom: 12px;
}

/* Free detect results */
.free-detect-results { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin-top: 16px; }
.free-detect-card {
  padding: 14px 10px; border-radius: var(--radius); text-align: center;
  border: 2px solid var(--border); background: var(--bg);
}
.free-detect-card.ok { border-color: var(--success); background: var(--success-light); }
.free-detect-card.warn { border-color: var(--warning); background: var(--warning-light); }

/* File upload area */
.upload-area {
  border: 2px dashed var(--border); border-radius: var(--radius);
  padding: 28px 20px; text-align: center; cursor: pointer;
  transition: all var(--transition); color: var(--text-muted);
}
.upload-area:hover, .upload-area.dragover { border-color: var(--primary); background: var(--primary-light); color: var(--primary); }
.upload-area i { font-size: 2rem; margin-bottom: 8px; }

/* doc list */
.doc-item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 14px; border: 1px solid var(--border-light);
  border-radius: var(--radius-sm); margin-bottom: 8px;
  background: var(--bg);
}
.doc-item .doc-icon { font-size: 1.3rem; width: 36px; text-align: center; }
.doc-item .doc-info { flex: 1; }
.doc-item .doc-name { font-size: 0.83rem; font-weight: 600; }
.doc-item .doc-meta { font-size: 0.72rem; color: var(--text-muted); }

/* loading spinner */
.loading-spin { display: inline-block; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* responsive */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-4, .stat-row { grid-template-columns: repeat(2, 1fr); }
  .grid-5, .detect-grid { grid-template-columns: repeat(3, 1fr); }
  .pricing-grid, .vs-grid, .grid-3 { grid-template-columns: 1fr; }
  .free-detect-results { grid-template-columns: repeat(3, 1fr); }
  .sidebar { width: 200px; min-width: 200px; }
  .main-content { margin-left: 200px; }
  .login-left { display: none; }
  .flywheel { flex-direction: column; gap: 16px; }
  .fw-arrow { transform: rotate(90deg); }
}
@media (max-width: 768px) {
  .features-grid { grid-template-columns: 1fr; }
  .stat-row, .grid-2, .grid-4 { grid-template-columns: 1fr; }
  .detect-grid, .free-detect-results { grid-template-columns: repeat(2, 1fr); }
  .sidebar { display: none; }
  .main-content { margin-left: 0; }
  .hero h1 { font-size: 1.8rem; }
  .hero-actions { flex-direction: column; align-items: center; }
  .demo-area .input-row { flex-direction: column; }
  .nav-links { display: none; }
}