/* =========================================================
   API 开放平台 · 简约大气主题
   风格锚点：Stripe / Linear / Apple Developer
   ========================================================= */

:root {
  --bg: #fbfbfa;
  --bg-soft: #f4f4f2;
  --bg-ink: #0c0c0d;
  --card: #ffffff;
  --fg: #0c0c0d;
  --fg-2: #525252;
  --muted: #8a8a86;
  --border: #e8e8e4;
  --border-strong: #d4d4d0;
  --accent: #4f46e5;
  --accent-2: #0d9488;
  --accent-3: #c2410c;
  --accent-soft: color-mix(in srgb, var(--accent) 10%, transparent);
  --danger: #dc2626;
  --radius: 14px;
  --radius-lg: 22px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 2px rgb(12 12 13 / 0.04);
  --shadow: 0 1px 2px rgb(12 12 13 / 0.04), 0 10px 30px rgb(12 12 13 / 0.05);
  --font: ui-sans-serif, -apple-system, "Segoe UI", "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Consolas, monospace;
  --max: 1120px;
  --header-h: 64px;
}

[data-theme="dark"] {
  --bg: #0a0a0b;
  --bg-soft: #111113;
  --bg-ink: #fafafa;
  --card: #121214;
  --fg: #f4f4f5;
  --fg-2: #a1a1aa;
  --muted: #71717a;
  --border: #222226;
  --border-strong: #2e2e34;
  --accent: #818cf8;
  --accent-2: #2dd4bf;
  --accent-3: #fb923c;
  --accent-soft: color-mix(in srgb, var(--accent) 16%, transparent);
  --danger: #f87171;
  --shadow-sm: 0 1px 2px rgb(0 0 0 / 0.35);
  --shadow: 0 1px 2px rgb(0 0 0 / 0.35), 0 16px 40px rgb(0 0 0 / 0.25);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font: inherit; color: inherit; }

.container {
  width: min(100% - 48px, var(--max));
  margin-inline: auto;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  border-bottom-color: var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: var(--header-h);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 650;
  letter-spacing: -0.03em;
  font-size: 15px;
}
.brand-logo {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  background: var(--fg);
  color: var(--bg);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: -0.04em;
}
.nav {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 1;
}
.nav a {
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--fg-2);
  transition: color 0.15s ease, background 0.15s ease;
}
.nav a:hover { color: var(--fg); }
.nav a.active {
  color: var(--fg);
  background: color-mix(in srgb, var(--fg) 6%, transparent);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 550;
  letter-spacing: -0.01em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
  white-space: nowrap;
  min-height: 40px;
}
.btn:active { transform: scale(0.98); }
.btn-primary {
  background: var(--fg);
  color: var(--bg);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover {
  opacity: 0.92;
  box-shadow: var(--shadow);
}
.btn-accent {
  background: var(--accent);
  color: #fff;
}
.btn-ghost {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--fg);
}
.btn-ghost:hover {
  background: color-mix(in srgb, var(--fg) 4%, transparent);
  border-color: color-mix(in srgb, var(--fg) 18%, var(--border));
}
.btn-sm { padding: 7px 14px; min-height: 34px; font-size: 12.5px; }
.btn-block { width: 100%; }

.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: 14px;
  color: var(--fg-2);
}
.theme-toggle:hover {
  color: var(--fg);
  border-color: var(--border-strong);
}
.menu-btn {
  display: none;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: transparent;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  color: var(--fg);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 88px 0 56px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, color-mix(in srgb, var(--border) 80%, transparent) 1px, transparent 1px),
    linear-gradient(to bottom, color-mix(in srgb, var(--border) 80%, transparent) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 70% 55% at 50% 0%, #000 10%, transparent 70%);
  opacity: 0.7;
}
.blob { display: none; }

.hero-grid-layout {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px 6px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--card) 80%, transparent);
  font-size: 12px;
  font-weight: 500;
  color: var(--fg-2);
}
.eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-2) 22%, transparent);
}
.hero h1 {
  margin: 22px 0 18px;
  font-size: clamp(2.6rem, 5.2vw, 4.15rem);
  line-height: 1.02;
  letter-spacing: -0.045em;
  font-weight: 720;
}
.gradient-text {
  background: linear-gradient(115deg, var(--accent) 0%, var(--accent-2) 55%, var(--accent-3) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-lead {
  color: var(--fg-2);
  font-size: 17px;
  line-height: 1.75;
  max-width: 520px;
  margin: 0;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}
.hero-actions .btn { min-height: 46px; padding: 12px 22px; font-size: 14px; }
.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
  margin-top: 36px;
  color: var(--muted);
  font-size: 12.5px;
  font-weight: 500;
}
.hero-trust span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.hero-trust i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--fg);
  opacity: 0.35;
}

/* Orbit / visual */
.orbit-wrap {
  position: relative;
  width: min(100%, 380px);
  aspect-ratio: 1;
  margin-inline: auto;
}
.orbit-stage { position: absolute; inset: 6%; }
.orbit-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--accent) 22%, var(--border));
}
.orbit-ring.r1 { animation: spin 36s linear infinite; border-style: dashed; opacity: 0.7; }
.orbit-ring.r2 { inset: 12%; animation: spin 50s linear infinite reverse; opacity: 0.5; }
.orbit-ring.r3 { inset: 24%; animation: spin 28s linear infinite; opacity: 0.85; }
.orbit-core {
  position: absolute;
  inset: 30%;
  border-radius: 28%;
  background: var(--fg);
  color: var(--bg);
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 26px;
  letter-spacing: -0.05em;
  box-shadow:
    0 30px 60px color-mix(in srgb, var(--accent) 28%, transparent),
    0 0 0 1px color-mix(in srgb, var(--fg) 8%, transparent);
  animation: float 6s ease-in-out infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* ===== Marquee ===== */
.marquee-section { margin-top: 64px; }
.marquee-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.marquee-head .line {
  flex: 1;
  height: 1px;
  background: var(--border);
}
.marquee {
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
}
.marquee-track {
  display: flex;
  gap: 10px;
  width: max-content;
  animation: scroll 48s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
.api-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--card) 70%, transparent);
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--fg-2);
  white-space: nowrap;
}

/* ===== Sections ===== */
.section {
  padding: 96px 0;
}
.section-alt {
  background: var(--bg-soft);
  border-block: 1px solid var(--border);
}
.section-head {
  margin-bottom: 40px;
  max-width: 640px;
}
.section-head.center {
  text-align: center;
  margin-inline: auto;
}
.section-label {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
}
.section-head h2 {
  margin: 0;
  font-size: clamp(1.9rem, 3.6vw, 2.85rem);
  letter-spacing: -0.04em;
  line-height: 1.12;
  font-weight: 700;
}
.section-head p {
  margin: 16px 0 0;
  color: var(--fg-2);
  font-size: 16px;
  line-height: 1.75;
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}
.stat-num {
  font-size: clamp(2.1rem, 3.6vw, 2.9rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
  font-variant-numeric: tabular-nums;
}

/* Cards */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.api-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.api-card h3 {
  margin: 0 0 8px;
  font-size: 15.5px;
  font-weight: 650;
  letter-spacing: -0.02em;
}
.api-card p {
  margin: 0;
  color: var(--fg-2);
  font-size: 13.5px;
  line-height: 1.65;
  min-height: 44px;
}
.api-card-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.icon-box {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  font-family: var(--mono);
  flex-shrink: 0;
}
.icon-box.green {
  background: color-mix(in srgb, var(--accent-2) 12%, transparent);
  color: var(--accent-2);
}
.icon-box.amber {
  background: color-mix(in srgb, var(--accent-3) 12%, transparent);
  color: var(--accent-3);
}
.api-card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
}
.price-tag {
  color: var(--accent);
  font-weight: 600;
}
.cat-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}
.cat-tab {
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--fg-2);
  cursor: pointer;
  font-size: 12.5px;
  font-weight: 500;
}
.cat-tab.active {
  background: var(--fg);
  color: var(--bg);
  border-color: var(--fg);
}

/* Features */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.feature-card h3 {
  margin: 0 0 8px;
  font-size: 15.5px;
  letter-spacing: -0.02em;
}
.feature-card p {
  margin: 0;
  color: var(--fg-2);
  font-size: 13.5px;
  line-height: 1.7;
}

/* Pricing */
.price-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  align-items: stretch;
}
.price-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.price-card.featured {
  background: var(--fg);
  color: var(--bg);
  border-color: var(--fg);
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}
.price-card.featured .price-meta { opacity: 0.65; }
.price-card.featured .price-list li { color: color-mix(in srgb, var(--bg) 80%, transparent); }
.price-card.featured .check { color: color-mix(in srgb, var(--accent-2) 90%, var(--bg)); }
.price-amount {
  font-size: 2.55rem;
  font-weight: 720;
  letter-spacing: -0.045em;
  font-variant-numeric: tabular-nums;
}
.price-meta {
  color: var(--muted);
  font-size: 13px;
}
.price-list {
  list-style: none;
  padding: 0;
  margin: 18px 0 0;
  display: grid;
  gap: 10px;
}
.price-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 13.5px;
  color: var(--fg-2);
}
.check {
  color: var(--accent-2);
  font-weight: 700;
}

/* CTA */
.cta-box {
  position: relative;
  overflow: hidden;
  border-radius: 28px;
  padding: 64px 48px;
  background: var(--bg-ink);
  color: var(--bg);
}
[data-theme="dark"] .cta-box {
  background: var(--fg);
  color: var(--bg);
}
.cta-box::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.35;
  background:
    radial-gradient(circle at 18% 30%, var(--accent), transparent 48%),
    radial-gradient(circle at 82% 70%, var(--accent-2), transparent 48%);
}
.cta-box > * { position: relative; }
.cta-box h2 {
  margin: 0;
  font-size: clamp(1.85rem, 3.8vw, 2.9rem);
  letter-spacing: -0.04em;
  line-height: 1.12;
  font-weight: 700;
}
.cta-box p {
  opacity: 0.72;
  max-width: 460px;
  margin: 18px 0 0;
  font-size: 15px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 56px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
}
.footer-grid h4 {
  margin: 0 0 14px;
  font-size: 12px;
  color: var(--muted);
  font-weight: 550;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-family: var(--mono);
}
.footer-grid p {
  color: var(--fg-2);
  font-size: 13.5px;
  margin: 12px 0 0;
  max-width: 360px;
  line-height: 1.75;
}
.footer-links {
  display: grid;
  gap: 10px;
}
.footer-links a {
  color: var(--fg-2);
  font-size: 13.5px;
}
.footer-links a:hover { color: var(--fg); }
.footer-bottom {
  margin-top: 48px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 12px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

/* ===== Forms ===== */
.auth-wrap {
  min-height: calc(100vh - var(--header-h));
  display: grid;
  place-items: center;
  padding: 48px 0 72px;
}
.auth-card {
  width: min(100%, 420px);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow);
}
.auth-card h1 {
  margin: 0 0 6px;
  font-size: 1.55rem;
  letter-spacing: -0.035em;
}
.auth-card .sub {
  color: var(--fg-2);
  font-size: 14px;
  margin: 0 0 22px;
}
.field {
  display: grid;
  gap: 6px;
  margin-bottom: 14px;
}
.field label {
  font-size: 12.5px;
  color: var(--muted);
  font-weight: 550;
}
.input {
  width: 100%;
  padding: 11px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.input:focus {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.tabs {
  display: flex;
  gap: 4px;
  padding: 4px;
  border-radius: 999px;
  background: var(--bg-soft);
  margin-bottom: 22px;
}
.tabs button {
  flex: 1;
  border: 0;
  background: transparent;
  padding: 9px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 13.5px;
  color: var(--fg-2);
  font-weight: 500;
}
.tabs button.active {
  background: var(--card);
  color: var(--fg);
  box-shadow: var(--shadow-sm);
  font-weight: 600;
}
.muted-link {
  display: block;
  margin-top: 16px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}
.muted-link a { color: var(--accent); font-weight: 500; }

/* Console */
.console-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 24px;
  align-items: start;
}
.side-nav {
  display: grid;
  gap: 4px;
  position: sticky;
  top: 84px;
}
.side-nav button {
  text-align: left;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid transparent;
  background: transparent;
  cursor: pointer;
  color: var(--fg-2);
  font-size: 13.5px;
  font-weight: 500;
}
.side-nav button.active {
  background: var(--card);
  border-color: var(--border);
  color: var(--fg);
  font-weight: 600;
}
.panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.panel h2 {
  margin: 0 0 16px;
  font-size: 1.15rem;
  letter-spacing: -0.025em;
}
.kpi-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}
.kpi {
  background: var(--bg-soft);
  border-radius: 12px;
  padding: 14px 16px;
}
.kpi .label {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: var(--mono);
}
.kpi .value {
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-top: 4px;
  font-variant-numeric: tabular-nums;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
th, td {
  text-align: left;
  padding: 11px 8px;
  border-bottom: 1px solid var(--border);
}
th {
  color: var(--muted);
  font-weight: 550;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-family: var(--mono);
}
.mono {
  font-family: var(--mono);
  font-size: 12px;
}
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  background: color-mix(in srgb, var(--accent-2) 12%, transparent);
  color: var(--accent-2);
  font-weight: 550;
}
.badge.warn {
  background: color-mix(in srgb, var(--accent-3) 14%, transparent);
  color: var(--accent-3);
}
.badge.danger {
  background: color-mix(in srgb, var(--danger) 12%, transparent);
  color: var(--danger);
}
.badge.muted {
  background: color-mix(in srgb, var(--muted) 12%, transparent);
  color: var(--muted);
}
.key-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

/* Docs */
.docs-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  align-items: start;
}
.code-block {
  background: #0c0c0d;
  color: #e4e4e7;
  border-radius: 14px;
  padding: 16px;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.7;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-all;
}
[data-theme="dark"] .code-block {
  background: #08080a;
  border: 1px solid var(--border);
}
.param-table td:first-child {
  font-family: var(--mono);
  font-size: 12px;
  white-space: nowrap;
}
.result-box { min-height: 120px; }
.hint {
  margin: -4px 0 14px;
  color: var(--muted);
  font-size: 13px;
}

/* Toast */
.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 100;
  background: var(--fg);
  color: var(--bg);
  padding: 12px 18px;
  border-radius: 12px;
  font-size: 13.5px;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(8px);
  transition: 0.25s ease;
  pointer-events: none;
}
.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.in {
  opacity: 1;
  transform: none;
}

/* ===== Responsive ===== */
@media (max-width: 960px) {
  .hero-grid-layout { grid-template-columns: 1fr; gap: 36px; }
  .orbit-wrap { width: min(100%, 280px); }
  .api-grid, .feature-grid, .price-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .docs-layout { grid-template-columns: 1fr; }
  .console-grid { grid-template-columns: 1fr; gap: 16px; }
  .side-nav {
    position: static;
    grid-auto-flow: column;
    overflow-x: auto;
    gap: 8px;
    padding-bottom: 4px;
  }
  .side-nav button {
    white-space: nowrap;
    border: 1px solid var(--border);
    border-radius: 999px;
  }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .price-card.featured { transform: none; }
}
@media (max-width: 720px) {
  .container { width: min(100% - 32px, var(--max)); }
  .nav { display: none !important; }
  .menu-btn { display: inline-flex; }
  .header-actions .btn { display: none !important; }
  .header-actions .btn-primary {
    display: inline-flex !important;
    padding: 8px 14px;
    font-size: 12.5px;
    min-height: 34px;
  }
  .hero { padding: 56px 0 36px; }
  .hero h1 {
    font-size: clamp(2rem, 9vw, 2.6rem);
    letter-spacing: -0.04em;
  }
  .hero-lead { font-size: 15px; }
  .hero-actions { display: grid; grid-template-columns: 1fr; }
  .hero-actions .btn { width: 100%; }
  .section { padding: 64px 0; }
  .api-grid, .feature-grid, .price-grid, .kpi-row { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
  .cta-box { padding: 36px 22px; border-radius: 20px; }
  .cta-box .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; }
  .auth-card { padding: 24px 18px; }
  .input, .btn { min-height: 44px; }
  .panel { padding: 18px 16px; border-radius: 16px; }
}