*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-primary: #fafafa;
  --bg-secondary: #f4f4f5;
  --bg-card: #ffffff;
  --bg-card-hover: #fafafa;
  --text-primary: #18181b;
  --text-secondary: #52525b;
  --text-tertiary: #71717a;
  --accent: #7c3aed;
  --accent-hover: #6d28d9;
  --accent-soft: rgba(124, 58, 237, 0.06);
  --border: #e4e4e7;
  --border-subtle: #f4f4f5;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.05);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.07);
  --shadow-card: 0 1px 3px rgba(0,0,0,0.03);
  --shadow-card-hover: 0 4px 16px rgba(0,0,0,0.06);
  --tag-bg: rgba(124, 58, 237, 0.06);
  --tag-text: #7c3aed;
  --tag-green-bg: rgba(22, 163, 106, 0.06);
  --tag-green-text: #16a34a;
  --code-bg: #f4f4f5;
  --footer-bg: #fafafa;
  --divider: #e4e4e7;
  --radius: 10px;
  --radius-sm: 8px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --nav-height: 64px;
}

[data-theme="dark"] {
  --bg-primary: #09090b;
  --bg-secondary: #0c0c0f;
  --bg-card: #111113;
  --bg-card-hover: #18181b;
  --text-primary: #fafafa;
  --text-secondary: #a1a1aa;
  --text-tertiary: #71717a;
  --accent: #a78bfa;
  --accent-hover: #c4b5fd;
  --accent-soft: rgba(167, 139, 250, 0.08);
  --border: #27272a;
  --border-subtle: #1c1c1f;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
  --shadow-card: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-card-hover: 0 4px 12px rgba(0,0,0,0.4);
  --tag-bg: rgba(167, 139, 250, 0.1);
  --tag-text: #a78bfa;
  --tag-green-bg: rgba(74, 222, 128, 0.08);
  --tag-green-text: #4ade80;
  --code-bg: #18181b;
  --footer-bg: #0c0c0f;
  --divider: #27272a;
}

::selection {
  background: var(--accent);
  color: #ffffff;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-feature-settings: 'liga' 1, 'kern' 1, 'calt' 1;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
  opacity: 0;
  animation: pageIn 0.5s ease forwards;
}

@keyframes pageIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--accent-hover);
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Scroll Progress ── */

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: var(--accent);
  z-index: 9999;
  transition: width 0.1s linear;
}

/* ── Navigation ── */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: background-color 0.3s ease, box-shadow 0.3s ease,
    backdrop-filter 0.3s ease;
}

.nav.scrolled {
  background: rgba(250, 250, 250, 0.8);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--border);
}

[data-theme="dark"] .nav.scrolled {
  background: rgba(9, 9, 11, 0.85);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.nav-logo i {
  font-size: 1.3rem;
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 1rem;
}

.nav-btn:hover {
  color: var(--text-primary);
  border-color: var(--text-tertiary);
}

.lang-btn {
  width: auto;
  padding: 0 12px;
  font-size: 0.8rem;
  font-weight: 600;
  font-family: 'Inter', sans-serif;
}

.mobile-menu-btn {
  display: none;
}

/* ── Hero ── */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 680px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--accent-soft);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 32px;
  letter-spacing: 0.02em;
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #22c55e;
}

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 3.8rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.hero p.hero-desc {
  font-size: clamp(1rem, 1.6vw, 1.1rem);
  color: var(--text-secondary);
  max-width: 480px;
  margin: 0 auto 36px;
  line-height: 1.75;
}

.hero-trust {
  margin-top: 40px;
  font-size: 0.78rem;
  color: var(--text-tertiary);
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* ── Buttons ── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  text-decoration: none;
}

.btn i {
  font-size: 1rem;
}

.btn-primary {
  background: var(--accent);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: #ffffff;
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--text-tertiary);
  color: var(--text-primary);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: none;
  padding: 12px 20px;
}

.btn-ghost:hover {
  color: var(--text-primary);
}

.btn-lg {
  padding: 12px 28px;
  font-size: 0.9rem;
  border-radius: var(--radius);
}

/* ── Sections ── */

.section {
  padding: 100px 0;
  position: relative;
}

.section-alt {
  background: var(--bg-secondary);
}

.section-header {
  text-align: center;
  max-width: 560px;
  margin: 0 auto 64px;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.06em;
  margin-bottom: 14px;
}

.section-header h2 {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 14px;
}

.section-header p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 560px;
  margin: 0 auto;
}

/* ── Product Cards ── */

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.product-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: border-color 0.2s ease;
}

.product-card:hover {
  border-color: var(--text-tertiary);
}

.product-card.coming-soon {
  opacity: 0.55;
}

.product-card.coming-soon:hover {
  border-color: var(--border);
}

.product-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 18px;
}

.product-icon.blue {
  background: var(--accent-soft);
  color: var(--accent);
}

.product-icon.purple {
  background: rgba(139, 92, 246, 0.08);
  color: #8b5cf6;
}

[data-theme="dark"] .product-icon.purple {
  background: rgba(139, 92, 246, 0.12);
  color: #a78bfa;
}

.product-icon.emerald {
  background: rgba(16, 185, 129, 0.08);
  color: #10b981;
}

[data-theme="dark"] .product-icon.emerald {
  background: rgba(16, 185, 129, 0.12);
  color: #34d399;
}

.product-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.product-card .desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.product-tags {
  display: flex;
  gap: 8px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 5px;
  font-size: 0.72rem;
  font-weight: 600;
}

.tag-blue {
  background: var(--tag-bg);
  color: var(--tag-text);
}

.tag-green {
  background: var(--tag-green-bg);
  color: var(--tag-green-text);
}

.product-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
}

.product-link:hover {
  gap: 8px;
  transition: gap 0.2s ease;
}

.coming-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-tertiary);
}

/* ── Features ── */

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  transition: border-color 0.2s ease;
}

.feature-card:hover {
  border-color: var(--text-tertiary);
}

.feature-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  color: var(--accent);
  margin-bottom: 18px;
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ── MacFans Detail ── */

.detail-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.detail-content .detail-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.06em;
  margin-bottom: 14px;
}

.detail-content h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 14px;
}

.detail-content > p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 420px;
}

.detail-features {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 32px;
}

.detail-feature {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.detail-feature i {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  background: var(--accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--accent);
  margin-top: 2px;
}

.detail-feature-text h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.detail-feature-text p {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Pricing */

.pricing-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.price-box {
  flex: 1;
  min-width: 150px;
  padding: 20px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
  transition: border-color 0.2s ease;
}

.price-box:hover {
  border-color: var(--text-tertiary);
}

.price-box .price-title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.price-box .price-value {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.price-box .price-value span {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.price-box.featured {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.price-box.featured::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
}

/* Preview Frame */

.detail-preview {
  position: relative;
}

.preview-frame {
  width: 100%;
  aspect-ratio: 4/3;
  background: #111113;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
}

.preview-frame-dots {
  position: absolute;
  top: 14px;
  left: 16px;
  display: flex;
  gap: 7px;
  z-index: 2;
}

.preview-frame-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.preview-frame-dots span:nth-child(1) { background: #ef4444; }
.preview-frame-dots span:nth-child(2) { background: #f59e0b; }
.preview-frame-dots span:nth-child(3) { background: #22c55e; }

.preview-titlebar {
  height: 38px;
  background: #0c0c0f;
  border-bottom: 1px solid #27272a;
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-titlebar span {
  font-size: 0.7rem;
  color: #71717a;
  font-weight: 500;
}

.preview-body {
  display: flex;
  height: calc(100% - 38px);
}

.preview-sidebar {
  width: 48px;
  background: #0c0c0f;
  border-right: 1px solid #27272a;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 14px;
  gap: 12px;
}

.preview-sidebar-icon {
  width: 26px;
  height: 26px;
  border-radius: 6px;
  background: rgba(167, 139, 250, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-sidebar-icon.active {
  background: rgba(167, 139, 250, 0.16);
}

.preview-sidebar-icon i {
  font-size: 0.75rem;
  color: #a78bfa;
}

.preview-main {
  flex: 1;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.preview-stat-row {
  display: flex;
  gap: 8px;
}

.preview-stat {
  flex: 1;
  background: rgba(255,255,255,0.03);
  border: 1px solid #27272a;
  border-radius: 6px;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.preview-stat-label {
  font-size: 0.58rem;
  color: #71717a;
  letter-spacing: 0.04em;
}

.preview-stat-value {
  font-size: 1rem;
  font-weight: 700;
  color: #fafafa;
  font-family: 'JetBrains Mono', monospace;
}

.preview-stat-value.temp { color: #f97316; }
.preview-stat-value.power { color: #a78bfa; }
.preview-stat-value.fan { color: #34d399; }

.preview-bar-section {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.preview-bar-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.preview-bar-label {
  font-size: 0.58rem;
  color: #a1a1aa;
  width: 30px;
  flex-shrink: 0;
}

.preview-bar-track {
  flex: 1;
  height: 3px;
  background: #27272a;
  border-radius: 2px;
  overflow: hidden;
}

.preview-bar-fill {
  height: 100%;
  border-radius: 2px;
}

.preview-bar-fill.cpu { background: #f97316; width: 72%; }
.preview-bar-fill.gpu { background: #a78bfa; width: 58%; }
.preview-bar-fill.fan1 { background: #34d399; width: 45%; }
.preview-bar-fill.fan2 { background: #34d399; width: 52%; }

.preview-bar-val {
  font-size: 0.58rem;
  color: #71717a;
  font-family: 'JetBrains Mono', monospace;
  width: 34px;
  text-align: right;
  flex-shrink: 0;
}

/* ── Download ── */

.download-section {
  text-align: center;
  padding: 100px 0;
  position: relative;
}

.download-content {
  position: relative;
  z-index: 1;
}

.download-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 24px;
  background: var(--accent-soft);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: var(--accent);
}

.download-content h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.download-content p {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  line-height: 1.65;
}

.download-content .download-version {
  font-size: 0.82rem;
  color: var(--text-tertiary);
  margin-bottom: 32px;
}

.download-content .download-version code {
  font-family: 'JetBrains Mono', monospace;
  background: var(--code-bg);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.78rem;
}

.download-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.download-meta {
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

.download-meta a {
  color: var(--text-secondary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--border);
  transition: color 0.2s ease;
}

.download-meta a:hover {
  color: var(--accent);
}

/* ── Footer ── */

.footer {
  background: var(--footer-bg);
  border-top: 1px solid var(--border);
  padding: 64px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.footer-brand .footer-logo i {
  font-size: 1.2rem;
  color: var(--accent);
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 18px;
  max-width: 280px;
}

.footer-socials {
  display: flex;
  gap: 6px;
}

.footer-socials a {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 1rem;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.footer-socials a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.footer-col h4 {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.06em;
  margin-bottom: 14px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-col ul a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

.footer-col ul a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

.footer-bottom-links {
  display: flex;
  gap: 20px;
}

.footer-bottom-links a {
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

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

/* ── Scroll Reveal ── */

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }
.reveal[data-delay="4"] { transition-delay: 0.32s; }

/* ── Mobile Menu ── */

.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: var(--bg-primary);
  padding: 80px 24px 24px;
  flex-direction: column;
  gap: 8px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.mobile-nav.open {
  display: flex;
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav a {
  display: block;
  padding: 14px 0;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
}

/* ── Responsive ── */

@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .detail-split {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .detail-preview {
    order: -1;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

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

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

  .hero {
    min-height: auto;
    padding: 120px 24px 60px;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .section {
    padding: 72px 0;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 14px;
    text-align: center;
  }

  .pricing-row {
    flex-direction: column;
  }

  .preview-stat-row {
    flex-direction: column;
  }

  .preview-sidebar {
    width: 38px;
  }
}

@media (max-width: 480px) {
  .hero-cta {
    flex-direction: column;
    width: 100%;
  }

  .hero-cta .btn {
    width: 100%;
    justify-content: center;
  }

  .container {
    padding: 0 16px;
  }
}

/* ════════════════════════════════════════════════
   DevForge 公司官网 · 扩展样式
   ════════════════════════════════════════════════ */

/* ── Hero 增强：网格底纹 + 数据条 ── */

.hero-grid-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    linear-gradient(to right, var(--border-subtle) 1px, transparent 1px),
    linear-gradient(to bottom, var(--border-subtle) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 0%, transparent 75%);
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 0%, transparent 75%);
  opacity: 0.6;
}

.hero-stats {
  display: inline-flex;
  align-items: center;
  gap: 28px;
  margin-top: 48px;
  padding: 18px 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  box-shadow: var(--shadow-card);
}

.hero-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.hero-stat-num {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
}

.hero-stat-label {
  font-size: 0.72rem;
  color: var(--text-tertiary);
  letter-spacing: 0.02em;
}

.hero-stat-divider {
  width: 1px;
  height: 32px;
  background: var(--divider);
}

/* ── 产品横向展示行 ── */

.product-list {
  display: flex;
  flex-direction: column;
  gap: 64px;
}

.product-row {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 56px;
  align-items: center;
}

.product-row.reverse {
  direction: rtl;
}

.product-row.reverse > * {
  direction: ltr;
}

.product-row-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  box-shadow: var(--shadow-lg);
  aspect-ratio: 16 / 10;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s ease;
}

.product-row:hover .product-row-media {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg), 0 0 0 1px var(--accent-soft);
}

.product-row-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* 图片加载失败时的兜底：用纯色块 + 居中标题，避免破图 */
.product-row.no-media .product-row-media {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 16 / 10;
}

.product-row.no-media .product-row-media img {
  display: none;
}

.product-row-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}

.product-row-icon {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--c, var(--accent));
  background: color-mix(in srgb, var(--c, var(--accent)) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--c, var(--accent)) 22%, transparent);
}

.product-row-body h3 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.product-row-tagline {
  font-size: 0.84rem;
  color: var(--text-tertiary);
  font-weight: 500;
}

.product-row-body > p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 18px;
  max-width: 440px;
}

/* ── 扩展标签色板 ── */

.tag-violet {
  background: rgba(139, 92, 246, 0.1);
  color: #8b5cf6;
}

[data-theme="dark"] .tag-violet {
  background: rgba(167, 139, 250, 0.12);
  color: #a78bfa;
}

.tag-emerald {
  background: rgba(16, 185, 129, 0.1);
  color: #059669;
}

[data-theme="dark"] .tag-emerald {
  background: rgba(52, 211, 153, 0.12);
  color: #34d399;
}

.tag-amber {
  background: rgba(245, 158, 11, 0.12);
  color: #d97706;
}

[data-theme="dark"] .tag-amber {
  background: rgba(251, 191, 36, 0.14);
  color: #fbbf24;
}

/* ── 端侧 AI 三层架构 ── */

.ai-layers {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 16px;
  align-items: stretch;
}

.ai-layer {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.ai-layer:hover {
  border-color: var(--text-tertiary);
  transform: translateY(-3px);
}

.ai-layer-num {
  position: absolute;
  top: 20px;
  right: 22px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-tertiary);
  font-family: 'JetBrains Mono', monospace;
  opacity: 0.6;
}

.ai-layer-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--accent);
  margin-bottom: 18px;
}

.ai-layer h4 {
  font-size: 1.02rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.ai-layer p {
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.ai-layer-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
  font-size: 1.2rem;
}

/* ── 价格卡 ── */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 320px));
  gap: 24px;
  justify-content: center;
}

.pricing-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.pricing-card:hover {
  transform: translateY(-3px);
}

.pricing-card.featured {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), var(--shadow-lg);
}

.pricing-card-badge {
  position: absolute;
  top: -11px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 14px;
  background: var(--accent);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 600;
  border-radius: 20px;
  white-space: nowrap;
}

.pricing-card-name {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.pricing-card-price {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 26px;
}

.pricing-amount {
  font-size: 2.6rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.pricing-unit {
  font-size: 0.85rem;
  color: var(--text-tertiary);
}

.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 13px;
  margin-bottom: 30px;
  flex: 1;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.pricing-features li i {
  color: var(--accent);
  font-size: 1rem;
  flex-shrink: 0;
}

.pricing-cta {
  width: 100%;
  justify-content: center;
}

.pricing-note {
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-tertiary);
  margin-top: 28px;
}

/* ── 公司官网响应式补充 ── */

@media (max-width: 1024px) {
  .ai-layers {
    grid-template-columns: 1fr;
  }

  .ai-layer-arrow {
    transform: rotate(90deg);
    padding: 4px 0;
  }
}

@media (max-width: 768px) {
  .product-row,
  .product-row.reverse {
    grid-template-columns: 1fr;
    gap: 24px;
    direction: ltr;
  }

  .product-row-media {
    order: -1;
  }

  .product-list {
    gap: 48px;
  }

  .hero-stats {
    gap: 18px;
    padding: 16px 20px;
  }

  .hero-stat-num {
    font-size: 1.3rem;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 360px;
    margin: 0 auto;
  }
}

@media (max-width: 480px) {
  .hero-stats {
    flex-wrap: wrap;
    justify-content: center;
  }

  .product-row-body h3 {
    font-size: 1.25rem;
  }
}