/* ========================================================
   蒲公英引擎 (Dandelion) Portal — Premium Style System
   ======================================================== */

/* ---------- Tokens ---------- */
:root {
  /* Deeper, more immersive dark mode */
  --bg-primary: #03040b;
  --bg-secondary: #0a0b16;
  --bg-card: rgb(22 23 36 / 40%);
  --bg-card-hover: rgb(28 30 48 / 60%);
  --bg-elevated: #151623;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-tertiary: #64748b;
  --text-inverse: #020617;

  /* Modern neon accents for Dandelion branding */
  --accent: #8b5cf6;
  --accent-secondary: #3b82f6;
  --accent-soft: rgb(139 92 246 / 12%);
  --accent-glow: rgb(139 92 246 / 40%);
  --gradient-hero: linear-gradient(135deg, #8b5cf6 0%, #3b82f6 50%, #10b981 100%);
  --gradient-text: linear-gradient(to right, #a78bfa 0%, #60a5fa 50%, #34d399 100%);
  --gradient-card-border: linear-gradient(to bottom right, rgb(255 255 255 / 10%), rgb(255 255 255 / 0%));
  --border: rgb(255 255 255 / 8%);
  --border-hover: rgb(255 255 255 / 20%);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --shadow-sm: 0 2px 4px rgb(0 0 0 / 40%);
  --shadow-md: 0 10px 30px rgb(0 0 0 / 50%);
  --shadow-lg: 0 20px 40px rgb(0 0 0 / 70%);
  --shadow-glow: 0 0 60px rgb(139 92 246 / 15%);
  --font-sans: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-base: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  --nav-h: 72px;
}

/* ---------- Setup & Reset ---------- */
*, *::before, *::after { box-sizing: border-box; padding: 0; margin: 0; }

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

body {
  overflow-x: hidden;
  font-family: var(--font-sans);
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-primary);
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: none; }

/* ---------- Utilities ---------- */
.container { max-width: 1240px; padding: 0 24px; margin: 0 auto; }

.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Buttons ---------- */
.btn {  position: relative;
  display: inline-flex;
  gap: 10px;  align-items: center;  justify-content: center;  padding: 12px 24px;  overflow: hidden;  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
}

.btn-lg { padding: 16px 36px; font-size: 16px; border-radius: var(--radius-md); }

.btn-primary { color: #fff;
  background: var(--gradient-hero);
  border: 1px solid rgb(255 255 255 / 10%);
  box-shadow: 0 4px 20px rgb(139 92 246 / 40%);
}

.btn-primary::before { position: absolute; inset: 0;
  content: ''; background: linear-gradient(135deg, rgb(255 255 255 / 20%), transparent); opacity: 0; transition: opacity var(--transition-fast);
}
.btn-primary:hover { box-shadow: 0 8px 30px rgb(139 92 246 / 60%); transform: translateY(-2px); }
.btn-primary:hover::before { opacity: 1; }

.btn-outline {
  color: var(--text-primary);  background: rgb(255 255 255 / 2%);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-hover);
}

.btn-outline:hover {
  background: rgb(255 255 255 / 6%);
  border-color: rgb(255 255 255 / 40%);  transform: translateY(-2px);
}

.btn-ghost { color: var(--text-secondary); }
.btn-ghost:hover { color: var(--text-primary); background: rgb(255 255 255 / 8%); }

/* ========================================================
   HEADER / NAV
   ======================================================== */
.nav {
  position: fixed; top: 0; right: 0; left: 0; z-index: 100; height: var(--nav-h);
  background: rgb(3 4 11 / 40%); -webkit-backdrop-filter: blur(24px) saturate(2);
  backdrop-filter: blur(24px) saturate(2);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-base);
}

.nav.scrolled {
  background: rgb(3 4 11 / 85%);  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 30px rgb(0 0 0 / 50%);
}

.nav-inner { display: flex; align-items: center; justify-content: space-between; max-width: 1240px; height: 100%; padding: 0 24px; margin: 0 auto; }
.nav-logo { display: flex; gap: 12px; align-items: center; font-size: 20px; font-weight: 800; letter-spacing: -0.02em; }
.logo-icon { font-size: 26px; filter: drop-shadow(0 0 10px var(--accent-glow)); }

.nav-links { display: flex; gap: 6px; align-items: center; }

.nav-link {
  padding: 8px 16px; font-size: 14px; font-weight: 500;
  color: var(--text-secondary); border-radius: var(--radius-sm); transition: all var(--transition-fast);
}
.nav-link:hover, .nav-link.active { color: #fff; background: rgb(255 255 255 / 8%); }
.nav-actions { display: flex; gap: 16px; align-items: center; }

/* Mobile toggle */
.nav-toggle { display: none; flex-direction: column; gap: 6px; width: 32px; padding: 4px 0; }
.nav-toggle span { display: block; height: 2px; background: #fff; border-radius: 2px; transition: all var(--transition-base); }

/* ========================================================
   HERO
   ======================================================== */
.hero {
  position: relative; display: flex; align-items: center; justify-content: center; min-height: 100vh;
  padding: calc(var(--nav-h) + 60px) 24px 100px;
}

.hero-bg { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }

.hero-gradient {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 60% at 50% -10%, rgb(139 92 246 / 25%) 0%, transparent 80%),
              radial-gradient(ellipse 60% 50% at 80% 40%, rgb(16 185 129 / 8%) 0%, transparent 60%);
}

.hero-grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgb(255 255 255 / 3%) 1px, transparent 1px),
                    linear-gradient(90deg, rgb(255 255 255 / 3%) 1px, transparent 1px);
  background-size: 80px 80px;
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 30%, black 10%, transparent 100%);
  mask-image: radial-gradient(ellipse 80% 80% at 50% 30%, black 10%, transparent 100%);
}

.hero-content { position: relative; z-index: 10; max-width: 900px; text-align: center; }

.hero-badge {
  display: inline-flex; gap: 10px; align-items: center; padding: 6px 20px; margin-bottom: 40px; font-size: 14px; font-weight: 500;
  color: #c4b5fd;
  background: rgb(139 92 246 / 10%); border: 1px solid rgb(139 92 246 / 30%);
  border-radius: 100px; box-shadow: inset 0 0 20px rgb(139 92 246 / 10%);
}
.badge-dot { width: 8px; height: 8px; background: #10b981; border-radius: 50%; box-shadow: 0 0 12px #10b981; animation: pulseDot 2s infinite; }

@keyframes pulseDot { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.5; transform: scale(0.8); } }

.hero-title { margin-bottom: 28px; font-size: clamp(48px, 8vw, 84px); font-weight: 900; line-height: 1.1; letter-spacing: -0.04em; }
.hero-desc { max-width: 700px; margin: 0 auto 50px; font-size: clamp(16px, 2.5vw, 20px); line-height: 1.7; color: var(--text-secondary); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 20px; align-items: center; justify-content: center; margin-bottom: 70px; }

/* Stats */
.hero-stats { display: flex; flex-wrap: wrap; gap: 40px; align-items: center; justify-content: center; }
.stat-item { display: flex; flex-direction: column; gap: 6px; align-items: center; }
.stat-value { font-size: 40px; font-weight: 800; font-variant-numeric: tabular-nums; line-height: 1; text-shadow: 0 0 20px rgb(255 255 255 / 10%); }
.stat-suffix { font-size: 24px; font-weight: 700; color: #60a5fa; }
.stat-label { font-size: 14px; font-weight: 600; color: var(--text-tertiary); text-transform: uppercase; letter-spacing: 0.05em; }
.stat-divider { width: 1px; height: 50px; background: linear-gradient(var(--border), transparent); }

/* ========================================================
   SECTIONS COMMON
   ======================================================== */
.section { position: relative; padding: 120px 0; }
.section-header { margin-bottom: 72px; text-align: center; }

.section-tag {
  display: inline-block; padding: 6px 20px;
  margin-bottom: 20px;
  font-size: 13px; font-weight: 700; color: #a78bfa; text-transform: uppercase; letter-spacing: 0.1em; background: rgb(139 92 246 / 5%);
  border: 1px solid rgb(139 92 246 / 20%); border-radius: 100px;
}
.section-title { margin-bottom: 20px; font-size: clamp(32px, 5vw, 48px); font-weight: 800; line-height: 1.2; letter-spacing: -0.03em; }
.section-desc { max-width: 600px; margin: 0 auto; font-size: 18px; line-height: 1.7; color: var(--text-secondary); }

/* ========================================================
   GLASS CARDS (FEATURES) 
   ======================================================== */
.features { background: var(--bg-secondary); }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.feature-card {
  position: relative; padding: 40px 32px; overflow: hidden;
  background: var(--bg-card); -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px); border: 1px solid var(--border); border-radius: var(--radius-lg);
  transition: all var(--transition-slow);
}

/* Internal glowing gradient border */
.feature-card::before { position: absolute; inset: 0; padding: 1px;
  content: ''; background: var(--gradient-card-border);
  border-radius: inherit; opacity: 0.3;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; transition: opacity var(--transition-base);
}

.feature-card:hover {
  background: var(--bg-card-hover); border-color: rgb(255 255 255 / 15%); box-shadow: var(--shadow-lg);
  transform: translateY(-8px) scale(1.01);
}
.feature-card:hover::before { opacity: 1; }

.feature-icon-wrap { margin-bottom: 24px; }

.feature-icon {
  --icon-hue: 240;

  display: flex; align-items: center; justify-content: center; width: 64px; height: 64px;
  color: hsl(var(--icon-hue) 80% 70%);
  background: linear-gradient(135deg, hsl(var(--icon-hue) 80% 60% / 20%), hsl(var(--icon-hue) 80% 60% / 5%)); border: 1px solid hsl(var(--icon-hue) 80% 60% / 20%); border-radius: 18px;
  box-shadow: inset 0 0 20px hsl(var(--icon-hue) 80% 60% / 10%);
}

.feature-title { margin-bottom: 12px; font-size: 20px; font-weight: 700; letter-spacing: -0.01em; }
.feature-desc { margin-bottom: 24px; font-size: 15px; line-height: 1.7; color: var(--text-secondary); }

.feature-tag-row { display: flex; flex-wrap: wrap; gap: 8px; }

.feature-tag {
  padding: 4px 12px; font-size: 12px; font-weight: 600; color: var(--text-secondary);
  background: rgb(255 255 255 / 3%); border: 1px solid rgb(255 255 255 / 8%); border-radius: 100px;
}

/* ========================================================
   FRONTEND ARCHITECTURE
   ======================================================== */
.architecture { position: relative; background: var(--bg-primary); }

.architecture::before { position: absolute; inset: 0;
  pointer-events: none;
  content: ''; 
  background: radial-gradient(circle at 50% 50%, rgb(59 130 246 / 5%) 0%, transparent 60%);
}
.arch-wrapper { position: relative; z-index: 2; display: flex; justify-content: center; }
.arch-flow { display: flex; flex-direction: column; gap: 0; align-items: center; width: 100%; max-width: 900px; }

.arch-layer { width: 100%; }
.arch-layer-label { margin-bottom: 16px; font-size: 13px; font-weight: 700; color: var(--text-tertiary); text-align: center; text-transform: uppercase; letter-spacing: 0.15em; }
.arch-nodes { display: flex; flex-wrap: wrap; gap: 20px; justify-content: center; }

.arch-node {
  display: flex; flex-direction: column; gap: 8px; align-items: center;
  min-width: 180px;
  padding: 24px 32px; text-align: center;
  background: rgb(20 21 33 / 60%); backdrop-filter: blur(10px); border: 1px solid var(--border); border-radius: var(--radius-lg); transition: all var(--transition-base);
}
.arch-node:hover { background: rgb(20 21 33 / 90%); box-shadow: var(--shadow-md); transform: translateY(-4px); }
.arch-node-icon { font-size: 28px; filter: drop-shadow(0 2px 8px rgb(255 255 255 / 10%)); }
.arch-node-name { font-size: 16px; font-weight: 700; }
.arch-node-sub { font-size: 12px; font-weight: 500; color: var(--text-tertiary); }

.arch-node-blue { border-top: 2px solid #3b82f6; }
.arch-node-purple { border-top: 2px solid #8b5cf6; }
.arch-node-green { border-top: 2px solid #10b981; }
.arch-node-orange { border-top: 2px solid #f59e0b; }

.arch-connector { display: flex; justify-content: center; padding: 10px 0; opacity: 0.5; }

/* ========================================================
   HIGHLIGHTS
   ======================================================== */
.highlights { background: var(--bg-secondary); }
.highlights-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.highlight-card { position: relative;
  padding: 40px 32px; overflow: hidden;
  background: linear-gradient(180deg, rgb(255 255 255 / 2%) 0%, transparent 100%), var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg);
  transition: all var(--transition-slow);
}

.highlight-card::after { position: absolute; top: 0; right: 0; left: 0; height: 3px;
  content: '';
  background: var(--gradient-hero); opacity: 0; transition: opacity var(--transition-slow);
}
.highlight-card:hover { border-color: rgb(255 255 255 / 12%); box-shadow: var(--shadow-lg); transform: translateY(-5px); }
.highlight-card:hover::after { opacity: 1; }

.hl-num { margin-bottom: 20px;
  font-size: 64px; font-weight: 900;
  font-variant-numeric: tabular-nums; line-height: 1;
  color: transparent;
  transition: all var(--transition-base); -webkit-text-stroke: 1px rgb(255 255 255 / 15%);
}
.highlight-card:hover .hl-num { background: var(--gradient-text); -webkit-background-clip: text; -webkit-text-fill-color: transparent; -webkit-text-stroke: 0; }

.hl-title { margin-bottom: 12px; font-size: 18px; font-weight: 700; }
.hl-desc { font-size: 15px; line-height: 1.7; color: var(--text-secondary); }

/* ========================================================
   TECH STACK
   ======================================================== */
.techstack { padding: 80px 0; background: var(--bg-primary); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.tech-grid { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; max-width: 900px; margin: 0 auto; }

.tech-item {
  display: flex; gap: 12px; align-items: center; padding: 14px 28px;
  font-size: 15px; font-weight: 600; background: rgb(255 255 255 / 2%); border: 1px solid rgb(255 255 255 / 6%);
  border-radius: 100px; transition: all var(--transition-base);
}
.tech-item:hover { background: rgb(255 255 255 / 6%); border-color: rgb(255 255 255 / 20%); transform: scale(1.05); }
.tech-logo { font-size: 20px; }

/* ========================================================
   COMPARISON TABLE
   ======================================================== */
.comparison { background: var(--bg-secondary); }

.comparison-table-wrapper {
  max-width: 1000px;
  margin: 0 auto;
  overflow-x: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
}

.comparison-table thead {
  background: linear-gradient(135deg, rgb(139 92 246 / 15%) 0%, rgb(16 185 129 / 10%) 100%);
}

.comparison-table th {
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  text-align: left;
  border-bottom: 2px solid rgb(139 92 246 / 30%);
}

.comparison-table th:not(:first-child) {
  text-align: center;
}

.comparison-table td {
  padding: 20px 24px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table tbody tr:hover {
  background: rgb(255 255 255 / 2%);
  transition: background var(--transition-fast);
}

.comparison-table td:first-child {
  font-weight: 600;
  color: var(--text-primary);
  border-right: 1px solid var(--border);
}

.comparison-table td:not(:first-child) {
  text-align: center;
  vertical-align: middle;
}

.highlight-cell {
  background: linear-gradient(135deg, rgb(139 92 246 / 8%) 0%, rgb(16 185 129 / 5%) 100%);
  border-left: 3px solid #10b981;
}

.highlight-cell strong {
  font-weight: 700;
  color: #10b981;
}

.lowlight-cell {
  background: rgb(239 68 68 / 3%);
  border-left: 3px solid rgb(239 68 68 / 30%);
}

.cell-desc {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  font-weight: 400;
  color: var(--text-tertiary);
}

/* ========================================================
   QUICKSTART
   ======================================================== */
.quickstart { background: var(--bg-primary); }
.steps { display: flex; flex-direction: column; gap: 48px; max-width: 720px; margin: 0 auto; }

.step { display: flex; gap: 32px; align-items: flex-start; }

.step-number {
  display: flex;
  flex-shrink: 0; align-items: center; justify-content: center; width: 56px; height: 56px; font-size: 22px;
  font-weight: 800; color: #fff; background: var(--gradient-hero); border: 2px solid rgb(255 255 255 / 20%); border-radius: 50%;
  box-shadow: 0 4px 20px rgb(139 92 246 / 40%);
}
.step-title { padding-top: 4px; margin-bottom: 12px; font-size: 22px; font-weight: 700; }
.step-desc { font-size: 16px; line-height: 1.8; color: var(--text-secondary); }
.step-desc a { font-weight: 500; color: #60a5fa; text-decoration: none; border-bottom: 1px dashed rgb(96 165 250 / 40%); transition: border-bottom 0.2s; }
.step-desc a:hover { border-bottom: 1px solid #60a5fa; }

/* ========================================================
   FAQ
   ======================================================== */
.faq { background: var(--bg-secondary); }
.faq-list { display: flex; flex-direction: column; gap: 16px; max-width: 720px; margin: 0 auto; }

.faq-item {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-md); transition: all var(--transition-base);
}
.faq-item[open] { background: rgb(139 92 246 / 5%); border-color: rgb(139 92 246 / 40%); box-shadow: 0 4px 20px rgb(0 0 0 / 20%); }

.faq-question {
  display: flex; align-items: center; justify-content: space-between;
  padding: 24px; font-size: 16px; font-weight: 600; list-style: none; cursor: pointer; user-select: none;
}
.faq-question::-webkit-details-marker, .faq-question::marker { display: none; }
.faq-chevron { flex-shrink: 0; color: var(--text-tertiary); transition: transform var(--transition-base); }
.faq-item[open] .faq-chevron { color: #8b5cf6; transform: rotate(180deg); }

.faq-answer { padding: 0 24px 24px; }
.faq-answer p { font-size: 15px; line-height: 1.8; color: var(--text-secondary); }
.faq-answer code { padding: 2px 8px; font-family: var(--font-mono); font-size: 13px; color: #a78bfa; background: rgb(255 255 255 / 6%); border-radius: 4px; }

/* ========================================================
   CTA
   ======================================================== */
.cta { padding: 100px 0 120px; background: var(--bg-primary); }

.cta-inner {
  position: relative; padding: 100px 40px;
  overflow: hidden; text-align: center;
  background: linear-gradient(135deg, rgb(139 92 246 / 10%) 0%, rgb(16 185 129 / 5%) 100%), var(--bg-card); border: 1px solid rgb(139 92 246 / 20%);
  border-radius: var(--radius-xl); box-shadow: 0 20px 60px rgb(0 0 0 / 40%);
}

.cta-bg-orb {
  position: absolute;
  top: 50%; left: 50%; width: 600px; height: 600px; pointer-events: none;
  background: radial-gradient(circle, rgb(59 130 246 / 20%) 0%, transparent 60%); filter: blur(40px); border-radius: 50%; transform: translate(-50%, -50%);
}
.cta-title { position: relative; margin-bottom: 20px; font-size: clamp(28px, 5vw, 42px); font-weight: 800; }
.cta-desc { position: relative; margin-bottom: 40px; font-size: 18px; color: var(--text-secondary); }
.cta-actions { position: relative; display: flex; flex-wrap: wrap; gap: 20px; justify-content: center; }

/* ========================================================
   FOOTER
   ======================================================== */
.footer { padding: 80px 0 40px; background: #010206; border-top: 1px solid rgb(255 255 255 / 5%); }
.footer-inner { display: flex; flex-wrap: wrap; gap: 60px; justify-content: space-between; margin-bottom: 60px; }
.footer-brand { max-width: 360px; }
.footer-logo { display: flex; gap: 12px; align-items: center; margin-bottom: 16px; font-size: 22px; font-weight: 800; }
.footer-tagline { margin-bottom: 20px; font-size: 15px; color: var(--text-secondary); }
.footer-disclaimer { padding: 12px; font-size: 13px; line-height: 1.6; color: var(--text-tertiary); background: rgb(255 255 255 / 2%); border: 1px solid rgb(255 255 255 / 5%); border-radius: var(--radius-sm); }

.footer-links-group { display: flex; flex-wrap: wrap; gap: 80px; }
.footer-col { display: flex; flex-direction: column; gap: 14px; }
.footer-col h4 { margin-bottom: 8px; font-size: 14px; font-weight: 700; color: var(--text-primary); text-transform: uppercase; letter-spacing: 0.1em; }
.footer-col a { font-size: 15px; font-weight: 500; color: var(--text-secondary); transition: all var(--transition-fast); }
.footer-col a:hover { color: #fff; text-shadow: 0 0 10px rgb(255 255 255 / 30%); }
.footer-bottom { padding-top: 32px; text-align: center; border-top: 1px solid rgb(255 255 255 / 5%); }
.footer-bottom p { font-size: 14px; color: var(--text-tertiary); }

/* ========================================================
   SCROLL REVEAL (JS Handled)
   ======================================================== */
.reveal { opacity: 0; transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1); transform: translateY(40px); }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ========================================================
   RESPONSIVE
   ======================================================== */
@media (width <= 1024px) {
  .features-grid, .highlights-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-links-group { gap: 40px; }
}

@media (width <= 768px) {
  :root { --nav-h: 60px; }
  .nav-links, .nav-actions { display: none; }
  .nav-toggle { display: flex; }

  .nav-links.open, .nav-actions.open { position: fixed; top: var(--nav-h); right: 0; left: 0;
    display: flex; flex-direction: column; gap: 8px; padding: 24px;
    background: rgb(3 4 11 / 98%); backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border); animation: menuSlideDown 0.3s ease-out;
  }
  .nav-actions.open { top: unset; bottom: unset; gap: 16px; padding-top: 0; border-bottom: none; }

  @keyframes menuSlideDown { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: translateY(0); } }

  .features-grid, .highlights-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 24px; } .stat-divider { display: none; }
  .arch-nodes { flex-direction: column; align-items: center; } .arch-node { width: 100%; max-width: 320px; }
  .footer-inner { flex-direction: column; } .footer-links-group { gap: 40px; }
  .step { flex-direction: column; gap: 16px; } .section { padding: 80px 0; }
}

@media (width <= 480px) {
  .container { padding: 0 20px; }
  .hero-actions, .cta-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn-lg, .cta-actions .btn-lg { justify-content: center; width: 100%; }
  .cta-inner { padding: 60px 24px; }
}

/* ========================================================
   Clerk Sign-In Modal Styles
   ======================================================== */
#clerk-sign-in {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

#clerk-sign-in > div {
  background: #ffffff;
  padding: 40px;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

/* ========================================================
   User Info & Console Modal Styles
   ======================================================== */
.user-info {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.user-info img {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
}

.user-info-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.user-info-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
}

.user-info-email {
  font-size: 11px;
  color: var(--text-secondary);
}

.btn-logout {
  margin-left: 6px;
  padding: 4px 10px;
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 500;
  transition: all 0.2s;
}

.btn-logout:hover {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border-color: #ef4444;
}

/* ========================================================
   Console Modal Styles
   ======================================================== */
#console-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  z-index: 9999;
  overflow-y: auto;
}

.console-modal-content {
  max-width: 1100px;
  margin: 60px auto;
  padding: 0 24px;
}

.console-modal-container {
  background: var(--bg-card);
  border-radius: 16px;
  border: 1px solid var(--border);
  backdrop-filter: blur(20px);
  padding: 32px;
  position: relative;
}

.btn-close-console {
  position: absolute;
  top: 20px;
  right: 20px;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 14px;
  transition: all 0.2s;
}

.btn-close-console:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}

.console-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-bottom: 40px;
}

.console-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 32px;
}

.console-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}

.console-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.console-card-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.console-card-icon.blue {
  background: rgba(59, 130, 246, 0.1);
  color: #60a5fa;
}

.console-card-icon.red {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
}

.console-card-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
}

.console-card-divider {
  height: 1px;
  background: linear-gradient(90deg, var(--border), transparent);
  margin-bottom: 20px;
}

.info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.info-label {
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 500;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 700;
}

.tag-green {
  background: rgba(16, 185, 129, 0.1);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.tag-blue {
  background: rgba(59, 130, 246, 0.1);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.2);
}

.vip-section {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px dashed var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.vip-status {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 15px;
}

.btn-vip {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #fff;
  padding: 8px 16px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 700;
  border: none;
  box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
  cursor: pointer;
  transition: all 0.2s;
}

.btn-vip:hover {
  box-shadow: 0 8px 25px rgba(245, 158, 11, 0.5);
  transform: translateY(-2px);
}

.api-key-status {
  margin-bottom: 24px;
}

.api-key-label {
  display: block;
  color: var(--text-primary);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
}

.api-key-value {
  display: block;
  color: var(--text-secondary);
  font-size: 14px;
}

.api-key-display {
  display: none;
  align-items: center;
  justify-content: space-between;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border);
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 24px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-primary);
}

.api-key-display.active {
  display: flex;
}

.btn-generate {
  width: 100%;
  background: linear-gradient(135deg, #ef4444, #b91c1c);
  color: #fff;
  padding: 14px;
  border-radius: 8px;
  border: none;
  font-size: 15px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(239, 68, 68, 0.3);
  transition: all 0.2s;
}

.btn-generate:hover {
  box-shadow: 0 8px 30px rgba(239, 68, 68, 0.5);
  transform: translateY(-2px);
}

.btn-generate:disabled {
  opacity: 0.7;
  pointer-events: none;
}

.btn-copy {
  color: #94a3b8;
  transition: color 0.2s;
  background: none;
  border: none;
  cursor: pointer;
}

.btn-copy:hover {
  color: #34d399;
}

.api-notice {
  margin-top: 16px;
  font-size: 12px;
  color: var(--text-tertiary);
  line-height: 1.6;
}

/* ========================================================
   Navigation Styles
   ======================================================== */
.nav-auth {
  display: flex;
  align-items: center;
  margin-left: 4px;
  margin-right: 4px;
}

.auth-loading {
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.hero-badge-dot {
  background: #8b5cf6;
  box-shadow: 0 0 12px #8b5cf6;
}

.disclaimer {
  font-size: 13px;
  color: var(--text-tertiary);
  max-width: 500px;
  margin: -20px auto 40px;
  padding: 10px 16px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px dashed rgba(255, 255, 255, 0.1);
}

/* Responsive adjustments for console */
@media (max-width: 768px) {
  .console-grid {
    grid-template-columns: 1fr;
  }
  
  .console-modal-content {
    margin: 20px auto;
  }
}