/* ============================================================
 * StarHub Website v0.115.0 — pure static, single source of truth in manifest.py
 * ============================================================ */

*, *::before, *::after { box-sizing: border-box; }

:root {
  --bg-0: #050810;
  --bg-1: #0a1020;
  --bg-2: #0f172a;
  --bg-card: rgba(15, 23, 42, 0.65);
  --bg-card-hover: rgba(15, 23, 42, 0.85);
  --border: rgba(148, 163, 184, 0.12);
  --border-strong: rgba(148, 163, 184, 0.22);
  --text: #e2e8f0;
  --text-mute: #94a3b8;
  --text-faint: #64748b;
  --cyan: #22d3ee;
  --cyan-deep: #06b6d4;
  --cyan-soft: rgba(34, 211, 238, 0.18);
  --violet: #a78bfa;
  --pink: #f472b6;
  --green: #34d399;
  --amber: #fbbf24;
  --shadow-lg: 0 30px 80px -20px rgba(0, 0, 0, 0.6);
  --radius: 14px;
  --radius-sm: 8px;
  --font-sans: 'Inter', 'Nunito', system-ui, -apple-system, 'Segoe UI', 'PingFang SC',
    'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    'Liberation Mono', monospace;
}

html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  background: var(--bg-0);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.skip-link {
  position: absolute; top: -100px; left: 16px; padding: 8px 16px;
  background: var(--cyan); color: #001; border-radius: 4px; z-index: 100;
}
.skip-link:focus { top: 16px; }

.container { width: min(1180px, 92%); margin: 0 auto; }

/* ---------------- Nav ---------------- */
.nav-bar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(5, 8, 16, 0.6);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s, background .2s;
}
.nav-bar.is-scrolled { border-bottom-color: var(--border); background: rgba(5, 8, 16, 0.85); }
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.nav-brand { display: flex; align-items: center; gap: 10px; font-weight: 600; }
.nav-brand-text { font-size: 1.1rem; letter-spacing: -0.01em; }
.version-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan);
  background: var(--cyan-soft);
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid rgba(34, 211, 238, 0.3);
}

.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-links a {
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-mute);
  font-size: 14px;
  transition: color .15s, background .15s;
}
.nav-links a:hover { color: var(--text); background: rgba(255,255,255,0.04); }
.nav-gh {
  display: inline-flex; align-items: center; gap: 6px;
  margin-left: 6px; padding: 8px 14px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-weight: 500;
  color: var(--text);
}
.nav-gh:hover { background: rgba(255,255,255,0.1); }

.nav-toggle {
  display: none; background: none; border: none; color: var(--text);
  font-size: 22px; padding: 4px 8px; cursor: pointer;
}

/* ---------------- Hero ---------------- */
.hero {
  position: relative; overflow: hidden;
  padding: 80px 0 100px;
  isolation: isolate;
}
.hero-bg { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.06) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 30%, transparent 80%);
}
.hero-glow {
  position: absolute; top: -120px; left: 50%; transform: translateX(-50%);
  width: 900px; height: 600px;
  background: radial-gradient(ellipse at center,
    rgba(34, 211, 238, 0.22) 0%,
    rgba(167, 139, 250, 0.12) 35%,
    transparent 70%);
  filter: blur(40px);
}

.hero-inner {
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 56px;
  align-items: center;
}

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-mute);
  letter-spacing: 0.02em;
  margin-bottom: 20px;
}
.hero-eyebrow .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

.hero-title {
  font-size: clamp(40px, 5.6vw, 64px);
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
}
.grad-cyan {
  background: linear-gradient(120deg, var(--cyan) 0%, var(--violet) 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 17px; color: var(--text-mute); margin: 0 0 32px;
  max-width: 560px;
}

.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 36px; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 500; font-size: 15px;
  border: 1px solid transparent;
  cursor: pointer; user-select: none;
  transition: all .15s ease;
}
.btn-primary {
  background: linear-gradient(135deg, var(--cyan) 0%, var(--cyan-deep) 100%);
  color: #03121a; font-weight: 600;
  box-shadow: 0 8px 24px -8px rgba(34, 211, 238, 0.6);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 12px 32px -8px rgba(34, 211, 238, 0.7); }
.btn-ghost {
  background: rgba(255,255,255,0.04);
  border-color: var(--border-strong);
  color: var(--text);
}
.btn-ghost:hover { background: rgba(255,255,255,0.08); }
.btn-text {
  background: transparent; color: var(--text-mute);
  padding: 12px 14px;
}
.btn-text:hover { color: var(--text); }
.btn-sm { padding: 8px 16px; font-size: 14px; }

.hero-meta {
  display: flex; flex-wrap: wrap; gap: 18px;
  color: var(--text-faint); font-size: 13px;
}
.meta-item { display: inline-flex; align-items: center; gap: 6px; }

/* ---- Hero visual ---- */
.hero-visual { position: relative; }
.window-mock {
  background: linear-gradient(180deg, #0a1020, #050810);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transform: rotate(-1.5deg);
  transition: transform .3s;
}
.window-mock:hover { transform: rotate(0); }
.window-bar {
  display: flex; align-items: center; gap: 6px;
  padding: 10px 14px;
  background: rgba(255,255,255,0.02);
  border-bottom: 1px solid var(--border);
}
.window-bar .dot { width: 11px; height: 11px; border-radius: 50%; }
.dot-r { background: #ef4444; }
.dot-y { background: #f59e0b; }
.dot-g { background: #10b981; }
.window-title {
  margin-left: 10px;
  font-family: var(--font-mono); font-size: 12px;
  color: var(--text-faint);
}

.window-body { display: grid; grid-template-columns: 130px 1fr; min-height: 280px; }
.mock-side {
  background: rgba(0,0,0,0.3);
  border-right: 1px solid var(--border);
  padding: 8px 0;
}
.mock-item {
  padding: 8px 14px;
  font-size: 12px; color: var(--text-faint);
  border-left: 2px solid transparent;
}
.mock-item.active {
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.06);
  border-left-color: var(--cyan);
}

.mock-main { padding: 12px; }
.mock-tabs {
  display: flex; gap: 6px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px; margin-bottom: 10px;
}
.mock-tab {
  font-size: 11px; padding: 4px 10px; border-radius: 4px;
  color: var(--text-faint); background: rgba(255,255,255,0.03);
}
.mock-tab.active { color: var(--cyan); background: rgba(34, 211, 238, 0.1); }

.mock-sql {
  font-family: var(--font-mono);
  font-size: 11.5px; line-height: 1.6;
  color: var(--text-mute);
  padding: 8px 0;
}
.mock-sql .kw { color: var(--violet); font-weight: 600; }
.mock-sql .fn { color: var(--cyan); }
.mock-sql .str { color: var(--green); }
.mock-sql .cursor {
  display: inline-block; width: 7px; height: 14px;
  background: var(--cyan); vertical-align: -2px;
  animation: blink 1.1s steps(2) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.mock-result { margin-top: 12px; }
.mock-row {
  display: grid; grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
  padding: 6px 8px;
  font-family: var(--font-mono); font-size: 11px;
  color: var(--text-mute);
  border-top: 1px solid rgba(148, 163, 184, 0.08);
}
.mock-row.head { color: var(--cyan); border-top: none; font-weight: 600; }
.mock-row .num { color: var(--amber); text-align: right; }

.float-card {
  position: absolute;
  background: rgba(10, 16, 32, 0.95);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 10px 14px;
  display: flex; align-items: center; gap: 10px;
  font-size: 13px;
  box-shadow: var(--shadow-lg);
  animation: float 5s ease-in-out infinite;
}
.float-ai { left: -32px; top: 36%; animation-delay: 0s; }
.float-android { right: -20px; bottom: 12%; animation-delay: 1.5s; }
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
.float-icon { font-size: 22px; }
.float-title { color: var(--text); font-weight: 500; }
.float-sub { color: var(--text-faint); font-size: 11px; }

/* ---------------- Stats strip ---------------- */
.stats-strip {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-1);
  padding: 28px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat { text-align: center; }
.stat-num {
  font-family: var(--font-mono);
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 600;
  color: var(--cyan);
  letter-spacing: -0.02em;
}
.stat-label {
  font-size: 13px;
  color: var(--text-mute);
  margin-top: 4px;
}

/* ---------------- Section base ---------------- */
.section { padding: 96px 0; }
.section-alt { background: var(--bg-1); }
.section-head {
  max-width: 720px;
  margin: 0 auto 56px;
  text-align: center;
}
.section-eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(28px, 3.8vw, 40px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0 0 14px;
}
.section-sub {
  font-size: 16px;
  color: var(--text-mute);
  margin: 0;
}
.section-sub a { color: var(--cyan); }
.section-sub a:hover { text-decoration: underline; }

/* ---------------- Architecture ---------------- */
.arch-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.arch-card {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 28px;
  backdrop-filter: blur(6px);
  transition: transform .2s, border-color .2s;
}
.arch-card:hover {
  transform: translateY(-3px);
  border-color: var(--cyan);
}
.arch-icon { font-size: 36px; margin-bottom: 14px; }
.arch-card h3 {
  font-size: 18px;
  margin: 0 0 10px;
  display: flex; align-items: center; gap: 8px;
  flex-wrap: wrap;
}
.arch-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan);
  background: var(--cyan-soft);
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid rgba(34, 211, 238, 0.3);
}
.arch-card p { color: var(--text-mute); font-size: 14px; margin: 0 0 14px; }
.arch-list {
  list-style: none; padding: 0; margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
}
.arch-list li {
  padding: 4px 0;
  color: var(--text-mute);
  border-top: 1px dashed var(--border);
}
.arch-list li:first-child { border-top: none; }
.arch-list li::before { content: '▸ '; color: var(--cyan); }

/* ---------------- Features ---------------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 24px;
  transition: all .2s;
}
.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(34, 211, 238, 0.4);
  transform: translateY(-2px);
}
.feature-card-wide {
  grid-column: span 2;
}
.feature-card-accent {
  background: linear-gradient(135deg,
    rgba(34, 211, 238, 0.06) 0%,
    rgba(167, 139, 250, 0.04) 100%);
  border-color: rgba(34, 211, 238, 0.25);
}
.feature-icon {
  font-size: 32px;
  margin-bottom: 12px;
  filter: drop-shadow(0 4px 12px rgba(34, 211, 238, 0.2));
}
.feature-card h3 {
  font-size: 17px;
  margin: 0 0 10px;
  display: flex; align-items: center; gap: 8px;
  flex-wrap: wrap;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-mute);
  margin: 0 0 14px;
}
.feature-card code {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.1);
  padding: 1px 6px;
  border-radius: 3px;
}
.feature-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(148, 163, 184, 0.08);
  color: var(--text-mute);
  border: 1px solid var(--border);
}

/* ---------------- Download ---------------- */
.dl-platform {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 16px;
}
.dl-platform-head {
  display: flex; align-items: center; gap: 10px;
  padding-bottom: 14px;
  margin-bottom: 8px;
  border-bottom: 1px dashed var(--border);
}
.dl-os-icon { font-size: 22px; }
.dl-platform-head h3 { margin: 0; font-size: 16px; }
.dl-platform-meta { font-size: 13px; color: var(--text-faint); margin-left: auto; }

.dl-row {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 12px 0;
  border-top: 1px dashed var(--border);
}
.dl-row:first-of-type { border-top: none; }
.dl-title { font-weight: 500; }
.dl-sub { font-size: 12px; color: var(--text-faint); }

.dl-tip {
  margin-top: 18px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  background: rgba(34, 211, 238, 0.06);
  border: 1px solid rgba(34, 211, 238, 0.2);
  font-size: 13px;
  color: var(--text-mute);
}
.dl-tip code {
  font-family: var(--font-mono);
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.1);
  padding: 1px 6px;
  border-radius: 3px;
}

/* ---------------- Changelog ---------------- */
.changelog { display: flex; flex-direction: column; gap: 14px; max-width: 880px; margin: 0 auto; }
.cl-item {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 20px 24px;
}
.cl-head {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.cl-version {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--cyan);
  background: var(--cyan-soft);
  padding: 2px 10px;
  border-radius: 4px;
  border: 1px solid rgba(34, 211, 238, 0.3);
  font-size: 13px;
}
.cl-date { font-size: 13px; color: var(--text-faint); }
.cl-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  margin-left: auto;
}
.tag-feat { color: var(--cyan); background: var(--cyan-soft); }
.tag-fix { color: var(--amber); background: rgba(251, 191, 36, 0.12); }
.cl-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}
.cl-title code {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.1);
  padding: 1px 6px;
  border-radius: 3px;
}
.cl-body { font-size: 14px; color: var(--text-mute); line-height: 1.7; }
.cl-body code {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.1);
  padding: 1px 6px;
  border-radius: 3px;
}

/* ---------------- Dev / Docs ---------------- */
.dev-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.dev-block {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 22px;
}
.dev-block-wide { grid-column: span 2; }
.dev-block h3 { margin: 0 0 14px; font-size: 16px; }

.code {
  margin: 0;
  background: #020617;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-mute);
}
.code code { color: inherit; }
.code .comment { color: var(--text-faint); }

.cmd-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.cmd-table td { padding: 8px 0; vertical-align: top; }
.cmd-table td:first-child { width: 40%; }
.cmd-table code {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.08);
  padding: 2px 8px;
  border-radius: 4px;
  white-space: nowrap;
}

.docs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.doc-link {
  padding: 14px 16px;
  background: rgba(34, 211, 238, 0.04);
  border: 1px solid rgba(34, 211, 238, 0.15);
  border-radius: var(--radius-sm);
  transition: all .15s;
}
.doc-link:hover {
  background: rgba(34, 211, 238, 0.08);
  border-color: rgba(34, 211, 238, 0.35);
}
.doc-title {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan);
  margin-bottom: 4px;
}
.doc-sub { font-size: 12px; color: var(--text-faint); }

/* ---------------- Security ---------------- */
.security-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  max-width: 980px; margin: 0 auto;
}
.sec-item {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 22px;
}
.sec-icon { font-size: 28px; margin-bottom: 10px; }
.sec-item h4 { margin: 0 0 8px; font-size: 16px; }
.sec-item p { color: var(--text-mute); font-size: 14px; margin: 0; }

/* ---------------- About ---------------- */
.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 32px;
  max-width: 980px; margin: 0 auto;
}
.about-head {
  display: flex; gap: 18px; align-items: flex-start;
  padding-bottom: 22px;
  border-bottom: 1px dashed var(--border);
}
.about-head h3 {
  margin: 0 0 8px;
  font-size: 22px;
  background: linear-gradient(120deg, var(--cyan), var(--violet));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.about-head p { margin: 0; color: var(--text-mute); font-size: 14.5px; }

.about-meta {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 24px;
  font-size: 14px;
}
.about-meta strong {
  display: block;
  color: var(--text-faint);
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 2px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.about-meta a { color: var(--cyan); }
.about-meta a:hover { text-decoration: underline; }

.about-sub {
  margin: 28px 0 12px;
  font-size: 15px;
  color: var(--text);
}
.about-thanks {
  list-style: none; padding: 0; margin: 0;
  font-size: 14px; color: var(--text-mute);
}
.about-thanks li {
  padding: 6px 0;
  padding-left: 18px;
  position: relative;
}
.about-thanks li::before {
  content: '–'; position: absolute; left: 0; color: var(--cyan);
}
.about-thanks code {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.1);
  padding: 1px 6px;
  border-radius: 3px;
}
.about-thanks a { color: var(--cyan); }
.about-thanks a:hover { text-decoration: underline; }

/* ---------------- Footer ---------------- */
.footer {
  border-top: 1px solid var(--border);
  background: var(--bg-1);
  padding: 28px 0;
}
.footer-inner {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 14px;
  font-size: 13px;
  color: var(--text-faint);
}
.footer-left { display: flex; align-items: center; gap: 10px; }
.footer-links { display: flex; gap: 14px; }
.footer-links a:hover { color: var(--text); }

/* ---------------- Responsive ---------------- */
@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { order: -1; max-width: 540px; margin: 0 auto; }
  .arch-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card-wide { grid-column: span 1; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .security-grid { grid-template-columns: 1fr; }
  .dev-grid { grid-template-columns: 1fr; }
  .dev-block-wide { grid-column: span 1; }
  .about-meta { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .section { padding: 64px 0; }
  .hero { padding: 56px 0 72px; }
  .nav-links {
    position: absolute; top: 64px; right: 4%; left: 4%;
    flex-direction: column; gap: 0;
    background: rgba(10, 16, 32, 0.98);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    padding: 12px;
    transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: all .15s;
  }
  .nav-links.is-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-links a { padding: 10px 14px; width: 100%; }
  .nav-toggle { display: block; }
  .nav-gh { width: 100%; justify-content: center; margin: 0; }
  .hero-cta .btn { flex: 1; justify-content: center; }
  .float-card { display: none; }
  .dl-row { flex-direction: column; align-items: flex-start; }
  .footer-inner { justify-content: center; text-align: center; }
  .docs-grid { grid-template-columns: 1fr; }
}

@media (prefers-color-scheme: light) {
  /* keep dark — the brand is dark-first */
}