:root {
  --paper: #F8FAFC;
  --paper-deep: #EEF3F8;
  --text: #101828;
  --muted: #667085;
  --soft: #6B7280;
  --line: rgba(148, 163, 184, 0.24);
  --card: rgba(255, 255, 255, 0.82);
  --card-solid: #FFFFFF;
  --accent: #2563EB;
  --accent-strong: #1D4ED8;
  --accent-dark: #1E3A5F;
  --cyan: #0EA5E9;
  --teal: #14B8A6;
  --action: #F97316;
  --danger: #DC2626;
  --success: #10B981;
  --warning: #F59E0B;
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.08), 0 1px 3px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 8px 32px rgba(15, 23, 42, 0.10), 0 2px 6px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.12), 0 4px 8px rgba(15, 23, 42, 0.04);
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  font-family: Inter, "Noto Sans SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    linear-gradient(180deg, #F0F4FA 0%, #F8FAFC 30%, #FEFEFE 100%);
}

a {
  color: inherit;
  text-decoration: none;
}

.page-shell {
  width: min(1240px, calc(100% - 88px));
  margin: 0 auto;
  padding: 40px 0 72px;
}

/* ── Top Bar ── */

.topbar {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr) 300px;
  align-items: center;
  gap: 24px;
  min-height: 42px;
  font-size: 14px;
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: fit-content;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  font-size: 20px;
  line-height: 1;
  letter-spacing: -0.08em;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--cyan));
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.brand-name {
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
}

.nav-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: clamp(20px, 3vw, 42px);
  color: var(--muted);
  font-weight: 600;
}

.nav-links a,
.ghost-link {
  opacity: 0.85;
  transition: color 180ms ease, opacity 180ms ease;
}

.nav-links a:hover,
.ghost-link:hover {
  opacity: 1;
  color: var(--accent);
}

.topbar-actions {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 26px;
  font-weight: 700;
}

.lang-switcher {
  display: block;
  position: relative;
}

.lang-button,
.lang-menu button,
.primary-btn,
.secondary-btn {
  font: inherit;
}

.lang-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  padding: 10px 13px;
  cursor: pointer;
  transition: border-color 180ms ease;
}

.lang-button:hover {
  border-color: rgba(148, 163, 184, 0.5);
}

.lang-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  z-index: 20;
  display: none;
  min-width: 180px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--card-solid);
  box-shadow: var(--shadow-lg);
}

.lang-menu.open {
  display: grid;
}

.lang-menu button {
  border: 0;
  background: transparent;
  padding: 10px 12px;
  text-align: left;
  border-radius: 10px;
  cursor: pointer;
  color: var(--text);
  font-size: 14px;
}

.lang-menu button:hover {
  background: rgba(37, 99, 235, 0.06);
  color: var(--accent);
}

.primary-btn,
.secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 56px;
  padding: 0 32px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-weight: 800;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.primary-btn {
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.25);
}

.primary-btn.small {
  min-height: 36px;
  padding: 0 24px;
  border-radius: 8px;
  font-size: 13px;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

.secondary-btn {
  color: var(--text);
  background: var(--card-solid);
  border-color: var(--line);
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.04);
}

.primary-btn:hover,
.secondary-btn:hover {
  transform: translateY(-2px);
}

.primary-btn:hover {
  box-shadow: 0 12px 32px rgba(37, 99, 235, 0.3);
}

.secondary-btn:hover {
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.08);
  border-color: var(--accent);
}

.block {
  width: 100%;
}

main {
  display: grid;
  gap: 0;
}

/* ── Hero ── */

.hero {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  align-items: center;
  min-height: 650px;
  padding: 58px 0 42px;
}

.hero-copy {
  padding-left: 42px;
}

.eyebrow {
  display: inline-flex;
  width: fit-content;
  padding: 9px 17px;
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: 999px;
  color: var(--accent);
  background: rgba(37, 99, 235, 0.06);
  font-size: 15px;
  font-weight: 800;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.06);
}

.hero h1 {
  display: grid;
  gap: 8px;
  margin: 34px 0 0;
  max-width: 640px;
  font-size: clamp(54px, 5.1vw, 78px);
  line-height: 1.1;
  letter-spacing: -0.055em;
  font-weight: 800;
}

.hero h1 span {
  display: block;
}

.accent-line {
  background: linear-gradient(135deg, var(--accent), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.lead {
  margin: 44px 0 0;
  max-width: 570px;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.95;
  font-weight: 500;
}

.hero-actions {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 42px;
}

/* ── Hero Visual ── */

.hero-visual {
  position: relative;
  min-height: 610px;
  display: grid;
  place-items: center;
}

.hero-visual::before {
  content: "";
  position: absolute;
  width: 510px;
  height: 510px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.08), transparent 64%);
  filter: blur(2px);
}

.orbit-stage {
  position: relative;
  width: 560px;
  aspect-ratio: 1;
}

.orbit-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid rgba(148, 163, 184, 0.2);
}

.orbit-ring-two {
  inset: 66px;
}

.orbit-ring-three {
  inset: 130px;
}

.orbit-ring-one::before,
.orbit-ring-two::before,
.orbit-ring-three::before {
  content: "";
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.5;
}

.orbit-ring-one::before {
  top: 38px;
  left: 305px;
}

.orbit-ring-two::before {
  top: 116px;
  right: 52px;
}

.orbit-ring-three::before {
  right: 24px;
  bottom: 88px;
}

.orbit-line {
  position: absolute;
  left: 254px;
  top: 52px;
  width: 1px;
  height: 455px;
  background: linear-gradient(180deg, transparent, rgba(148, 163, 184, 0.25), transparent);
  transform-origin: center;
}

.line-one {
  transform: rotate(38deg);
}

.line-two {
  transform: rotate(-42deg);
}

.core-card {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 2;
  display: grid;
  place-items: center;
  width: 184px;
  height: 184px;
  padding: 22px;
  transform: translate(-50%, -50%);
  border-radius: 31px;
  border: 1px solid rgba(37, 99, 235, 0.25);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(219, 234, 254, 0.7));
  box-shadow:
    0 8px 40px rgba(37, 99, 235, 0.12),
    inset 0 0 24px rgba(255, 255, 255, 0.8);
}

.core-mark {
  display: grid;
  place-items: center;
  width: 78px;
  height: 78px;
  border-radius: 22px;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--cyan));
  border: 1px solid rgba(37, 99, 235, 0.3);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.25);
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.12em;
}

.core-title {
  margin-top: 3px;
  font-size: 16px;
  font-weight: 700;
  color: var(--accent-dark);
}

.orbit-node {
  position: absolute;
  z-index: 3;
  display: grid;
  place-items: center;
  gap: 8px;
  width: 104px;
  height: 104px;
  border-radius: 50%;
  border: 1px solid rgba(148, 163, 184, 0.2);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
  backdrop-filter: blur(12px);
}

.orbit-node small {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.node-logo-svg {
  display: block;
  width: 44px;
  height: 44px;
  object-fit: contain;
}

.orbit-node .node-logo-svg {
  transform: translateY(2px);
}

.node-claude { top: -24px; left: 50%; transform: translateX(-50%); }
.node-gpt { top: 76px; right: -5px; }
.node-qwen { right: -28px; top: 320px; }
.node-deepseek { right: 68px; bottom: 5px; }
.node-llama { left: 190px; bottom: -28px; }
.node-grok { left: -26px; top: 310px; }
.node-gemini { left: 54px; top: 104px; }

/* ── Feature Strip ── */

.feature-strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  margin: 0 34px 58px;
  padding: 36px 40px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--card);
  box-shadow: var(--shadow);
}

.feature-strip article {
  display: grid;
  justify-items: center;
  gap: 8px;
  min-height: 95px;
  text-align: center;
}

.mini-icon {
  color: var(--accent);
  font-size: 27px;
  line-height: 1;
}

.feature-strip h3,
.feature-strip p {
  margin: 0;
}

.feature-strip h3 {
  font-size: 17px;
  font-weight: 800;
}

.feature-strip p {
  color: var(--muted);
  font-size: 15px;
}

/* ── Section Blocks ── */

.section-block {
  padding: 12px 34px 52px;
}

.section-heading {
  margin-bottom: 24px;
}

.section-heading.centered {
  text-align: center;
}

.section-heading h2 {
  margin: 0;
  font-size: 32px;
  line-height: 1.25;
  letter-spacing: -0.035em;
  color: var(--text);
}

.section-heading p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 17px;
}

/* ── Card Grid ── */

.card-grid {
  display: grid;
  gap: 18px;
}

.four-up {
  grid-template-columns: repeat(4, 1fr);
}

.three-up {
  grid-template-columns: repeat(3, 1fr);
}

.info-card {
  min-height: 208px;
  padding: 35px 30px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--card);
  box-shadow: var(--shadow);
  text-align: center;
}

.info-card.soft {
  min-height: 170px;
}

.card-kicker {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  margin-bottom: 18px;
  color: var(--accent);
  font-size: 28px;
  line-height: 1;
}

.info-card h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 800;
}

.info-card p {
  margin: 13px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}

/* ── About Section ── */

.about-section {
  padding-top: 8px;
}

.about-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: 36px;
  align-items: stretch;
  padding: 38px;
  border: 1px solid rgba(37, 99, 235, 0.14);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.05), rgba(14, 165, 233, 0.035)),
    var(--card);
  box-shadow: var(--shadow);
}

.about-copy h2 {
  margin: 0 0 18px;
  color: var(--text);
  font-size: 32px;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.about-copy p {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.85;
}

.about-copy .section-kicker {
  margin-bottom: 12px;
  color: var(--accent);
}

.about-copy .about-company-note {
  margin: 22px 0 0;
  padding-top: 18px;
  border-top: 1px solid rgba(148, 163, 184, 0.22);
  color: var(--text);
  font-weight: 700;
}

.about-statement {
  display: grid;
  align-content: center;
  gap: 16px;
  min-height: 100%;
  padding: 30px;
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.72);
}

.about-statement span,
.about-statement strong {
  display: block;
  color: var(--text);
  font-size: clamp(24px, 3vw, 36px);
  line-height: 1.2;
  letter-spacing: 0;
}

.about-statement span {
  font-weight: 700;
}

.about-statement strong {
  color: var(--accent);
  font-weight: 900;
}

/* ── Models Section ── */

.models-section {
  padding-top: 8px;
}

.model-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
}

.model-chip {
  display: grid;
  place-items: center;
  gap: 12px;
  min-height: 96px;
  padding: 18px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
  color: var(--text);
  font-size: 14px;
  font-weight: 700;
  text-align: center;
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.model-chip:hover {
  border-color: rgba(37, 99, 235, 0.25);
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.08);
}

.model-chip .node-logo-svg,
.model-chip span {
  font-size: 31px;
}

.model-chip .node-logo-svg {
  width: 38px;
  height: 38px;
}

/* ── Code Section ── */

.code-section {
  padding-top: 22px;
}

.code-shell {
  max-width: 1040px;
  margin: 0 auto;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--card);
  box-shadow: var(--shadow);
}

.code-tabs {
  display: flex;
  gap: 38px;
  padding: 22px 28px 0;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.code-tabs button {
  appearance: none;
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: inherit;
  font: inherit;
  padding-bottom: 14px;
  cursor: pointer;
  transition: border-color 180ms ease, color 180ms ease;
}

.code-tabs button:hover {
  color: var(--accent);
}

.code-tabs button:focus-visible {
  color: var(--accent);
  outline: 2px solid rgba(37, 99, 235, 0.28);
  outline-offset: 4px;
}

.code-tabs .active {
  color: var(--accent);
  border-bottom: 2px solid var(--accent);
}

.code-shell pre {
  margin: 0;
  padding: 24px 30px 32px;
  overflow: auto;
  color: #1E293B;
  font-size: 14px;
  line-height: 1.85;
}

.code-shell code {
  font-family: "SFMono-Regular", ui-monospace, Menlo, Monaco, Consolas, monospace;
}

/* ── Download Section ── */

.download-section {
  padding-top: 22px;
}

.section-kicker {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  max-width: 1040px;
  margin: 0 auto;
}

.download-card {
  display: grid;
  align-content: start;
  gap: 22px;
  min-height: 360px;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--card);
  box-shadow: var(--shadow);
}

.download-icon {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  border-radius: 14px;
  border: 1px solid rgba(37, 99, 235, 0.2);
  color: var(--accent);
  background: rgba(37, 99, 235, 0.06);
  font-size: 18px;
  font-weight: 800;
}

.download-card h3 {
  margin: 0;
  font-size: 22px;
  font-weight: 800;
  color: var(--text);
}

.download-card p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.download-meta {
  display: grid;
  gap: 8px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  background: var(--paper);
  font-size: 13px;
  font-weight: 700;
  word-break: break-word;
}

.download-grid-wide {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  max-width: 1040px;
  margin: 0 auto;
}

.download-card.compact {
  min-height: auto;
}

.download-card.compact .download-meta {
  font-size: 12px;
}

.download-card.compact h3 {
  font-size: 18px;
}

.download-card.compact p {
  font-size: 14px;
}

.release-link {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.release-link a {
  color: var(--accent);
}

.release-link a:hover {
  text-decoration: underline;
}

/* ── Pricing / Credit Tiers ── */

.pricing-panel .section-heading p {
  max-width: 720px;
  margin-inline: auto;
}

/* Credit tier grid — 4 cards */
.pricing-credit-grid {
  grid-template-columns: repeat(4, 1fr);
  max-width: 1100px;
  margin: 0 auto;
}

.pricing-card-credit {
  position: relative;
  display: grid;
  align-content: start;
  gap: 14px;
  padding: 30px 24px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--card);
  box-shadow: var(--shadow);
  text-align: center;
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.pricing-card-credit:hover {
  border-color: rgba(37, 99, 235, 0.25);
  box-shadow: var(--shadow-md);
}

.pricing-card-credit.featured {
  background: linear-gradient(180deg, #FFFFFF, #EFF6FF);
  border-color: rgba(37, 99, 235, 0.3);
  box-shadow: 0 8px 36px rgba(37, 99, 235, 0.14);
}

/* "最受欢迎" badge */
.credit-popular-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  padding: 4px 16px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--cyan));
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
  white-space: nowrap;
}

.credit-tier-name {
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
}

.pricing-card-credit.featured .credit-tier-name {
  color: var(--accent);
}

.credit-tier-price {
  font-size: 42px;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text);
  line-height: 1;
}

.pricing-card-credit.featured .credit-tier-price {
  color: var(--accent);
}

.credit-tier-desc {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
  min-height: 70px;
}

.credit-tier-note {
  margin: 0;
  padding: 10px 12px;
  border-radius: 8px;
  background: var(--paper);
  color: var(--soft);
  font-size: 12px;
  line-height: 1.6;
  font-weight: 600;
}

.pricing-card-credit.featured .credit-tier-note {
  background: rgba(37, 99, 235, 0.04);
  color: var(--accent);
}

.pricing-card-credit .primary-btn,
.pricing-card-credit .secondary-btn {
  margin-top: 4px;
  min-height: 48px;
  font-size: 15px;
}

/* Bottom disclaimer */
.pricing-disclaimer {
  max-width: 800px;
  margin: 28px auto 0;
  text-align: center;
  color: var(--soft);
  font-size: 13px;
  line-height: 1.7;
  font-weight: 600;
}

/* ── Footer ── */

.site-footer {
  padding: 56px 34px 24px;
  border-top: 1px solid var(--line);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr;
  gap: 48px;
  max-width: 1100px;
  margin: 0 auto 40px;
}

.footer-brand {
  display: grid;
  gap: 16px;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: fit-content;
}

.footer-logo .brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  font-size: 18px;
  letter-spacing: -0.08em;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--cyan));
  border-radius: 9px;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.footer-logo .brand-name {
  font-weight: 800;
  font-size: 18px;
  color: var(--text);
}

.footer-brand-desc {
  margin: 0;
  max-width: 360px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}

.footer-col-title {
  margin: 0 0 16px;
  font-size: 14px;
  font-weight: 800;
  color: var(--text);
}

.footer-nav,
.footer-support {
  display: grid;
  gap: 10px;
  align-content: start;
}

.footer-nav a,
.footer-support a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
  transition: color 180ms ease;
}

.footer-nav a:hover,
.footer-support a:hover {
  color: var(--accent);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  max-width: 1100px;
  margin: 0 auto;
}

.footer-copyright {
  margin: 0;
  color: var(--soft);
  font-size: 13px;
}

.footer-bottom-links {
  display: flex;
  gap: 16px;
}

.footer-bottom-links a {
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
  transition: color 180ms ease;
}

.footer-bottom-links a:hover {
  color: var(--accent);
}

.footer-compliance {
  margin: 0;
  padding: 4px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  background: rgba(37, 99, 235, 0.04);
}

/* ── Responsive ── */

@media (max-width: 1100px) {
  .page-shell {
    width: min(100% - 36px, 1240px);
    padding-top: 28px;
  }

  .topbar {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .nav-links,
  .topbar-actions {
    justify-content: flex-start;
  }

  .hero {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    padding-left: 0;
  }

  .hero-visual {
    min-height: 560px;
  }

  .feature-strip,
  .four-up,
  .three-up,
  .about-panel,
  .download-grid,
  .download-grid-wide,
  .pricing-grid,
  .pricing-credit-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .model-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 680px) {
  .page-shell {
    width: min(100% - 28px, 1240px);
  }

  .nav-links {
    gap: 18px;
    flex-wrap: wrap;
  }

  .topbar-actions {
    gap: 14px;
    flex-wrap: wrap;
  }

  .hero {
    min-height: auto;
    padding-top: 42px;
  }

  .hero h1 {
    font-size: clamp(44px, 13vw, 62px);
  }

  .lead {
    margin-top: 26px;
    font-size: 17px;
  }

  .hero-visual {
    min-height: 420px;
    overflow: hidden;
  }

  .code-tabs {
    gap: 20px;
    padding: 18px 20px 0;
    overflow-x: auto;
    white-space: nowrap;
  }

  .code-shell pre {
    padding: 22px 20px 28px;
  }

  .orbit-stage {
    transform: scale(0.66);
  }

  .feature-strip,
  .four-up,
  .three-up,
  .about-panel,
  .download-grid,
  .download-grid-wide,
  .pricing-grid,
  .pricing-credit-grid,
  .model-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .footer-brand {
    grid-column: auto;
  }

  .feature-strip,
  .section-block {
    margin-left: 0;
    margin-right: 0;
    padding-left: 0;
    padding-right: 0;
  }

  .feature-strip {
    padding: 28px 20px;
  }
}