/* webcool website — design tokens */
:root {
  --bg: #f5faff;
  --bg-elevated: #ffffff;
  --bg-muted: #eaf4ff;
  --text: #1a2f4a;
  --text-secondary: #466582;
  --text-muted: #6b8aab;
  --primary: #2563eb;
  --primary-dark: #1e3a5f;
  --primary-soft: #dbeafe;
  --border: #cfe1f3;
  --border-light: #e8f2fb;
  --accent: #0ea5e9;
  --shadow-sm: 0 1px 3px rgba(30, 58, 95, 0.06);
  --shadow-md: 0 8px 30px rgba(30, 58, 95, 0.08);
  --shadow-lg: 0 20px 60px rgba(30, 58, 95, 0.12);
  --radius: 16px;
  --radius-sm: 10px;
  --font-sans: "Plus Jakarta Sans", "Noto Sans SC", system-ui, sans-serif;
  --nav-height: 72px;
  --max-width: 1140px;
  --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + 24px);
}

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

img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }

.container {
  width: min(100% - 40px, var(--max-width));
  margin-inline: auto;
}

.site-header .container {
  width: min(100% - 32px, 1320px);
}

/* ── Navigation ── */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--nav-height);
  background: rgba(245, 250, 255, 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-light);
  transition: box-shadow var(--transition);
}

.site-header.scrolled { box-shadow: var(--shadow-sm); }

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-weight: 700;
  font-size: 1.15rem;
}

.brand:hover { color: var(--text); }

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  flex-wrap: nowrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  min-width: 0;
}

.nav-links li {
  flex-shrink: 0;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 8px;
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
  display: inline-block;
}

.nav-links a:hover {
  background: var(--bg-muted);
  color: var(--primary-dark);
}

html[lang="en"] .nav-links {
  gap: 3px;
}

html[lang="en"] .nav-links a {
  padding: 8px 10px;
  font-size: 0.86rem;
}

@media (max-width: 1200px) {
  html[lang="en"] .nav-links a {
    padding: 8px 7px;
    font-size: 0.8125rem;
  }
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.lang-toggle {
  display: flex;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--bg-elevated);
}

.lang-toggle a {
  border: none;
  background: transparent;
  padding: 6px 12px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  line-height: 1.5;
  transition: background var(--transition), color var(--transition);
}

.lang-toggle a.active {
  background: var(--primary);
  color: #fff;
}

.menu-toggle {
  display: none;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  border-radius: 8px;
  padding: 8px 10px;
  cursor: pointer;
  color: var(--text);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, #1d4ed8 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
  color: #fff;
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.45);
}

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

.btn-demo {
  background: linear-gradient(135deg, #059669 0%, #047857 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(5, 150, 105, 0.35);
}

.btn-demo:hover {
  color: #fff;
  box-shadow: 0 6px 20px rgba(5, 150, 105, 0.45);
}

.btn-secondary:hover {
  background: var(--bg-muted);
  color: var(--primary-dark);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

/* ── Hero ── */
.hero {
  padding: calc(var(--nav-height) + 64px) 0 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 0%, rgba(59, 130, 246, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 90% 20%, rgba(14, 165, 233, 0.08) 0%, transparent 55%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0 0 12px;
  color: var(--primary-dark);
}

.hero-subtitle {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--primary);
  margin: 0 0 20px;
}

.hero-desc {
  font-size: 1.08rem;
  color: var(--text-secondary);
  margin: 0 0 32px;
  max-width: 520px;
}

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

.hero-stats {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.stat-item strong {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-dark);
  line-height: 1.2;
}

.stat-item span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.hero-visual {
  position: relative;
}

.hero-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 24px;
  box-shadow: var(--shadow-lg);
}

.hero-card img {
  border-radius: 12px;
}

.hero-float {
  position: absolute;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 16px;
  box-shadow: var(--shadow-md);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.hero-float-1 { bottom: -16px; left: -20px; }
.hero-float-2 { top: -12px; right: -16px; }
.hero-float-3 { top: -12px; left: -20px; }
.hero-float-4 { bottom: -16px; right: -16px; }

/* ── Sections ── */
section { padding: 80px 0; }

.section-label {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--primary-dark);
  margin: 0 0 16px;
  line-height: 1.2;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 0 48px;
}

/* ── Products ── */
.products { background: var(--bg-elevated); }

.product-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.product-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: box-shadow var(--transition), transform var(--transition);
}

.product-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.product-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.product-icon-server { background: linear-gradient(135deg, #dbeafe, #bfdbfe); }
.product-icon-mobile { background: linear-gradient(135deg, #e0f2fe, #bae6fd); }

.product-card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--primary-dark);
}

.product-card .tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 6px;
  background: var(--primary-soft);
  color: var(--primary);
  margin-bottom: 14px;
}

.product-card p {
  color: var(--text-secondary);
  margin: 0 0 20px;
  font-size: 0.95rem;
}

.product-features {
  list-style: none;
  padding: 0;
  margin: 0;
}

.product-features li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 8px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.product-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
}

/* ── Features grid ── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
  border-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.feature-icon {
  font-size: 1.6rem;
  margin-bottom: 14px;
}

.feature-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--primary-dark);
}

.feature-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.feature-card-new {
  position: relative;
  border-color: rgba(37, 99, 235, 0.28);
  background: linear-gradient(145deg, #ffffff 0%, #f2f8ff 100%);
}

.feature-new {
  position: absolute;
  top: 18px;
  right: 18px;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.05em;
}

/* ── Media studio ── */
.media-studio {
  color: #e8f2ff;
  background:
    radial-gradient(circle at 12% 15%, rgba(14, 165, 233, 0.2), transparent 28%),
    radial-gradient(circle at 88% 70%, rgba(99, 102, 241, 0.18), transparent 30%),
    #102844;
}

.media-studio .section-label { color: #7dd3fc; }
.media-studio .section-title { color: #fff; }
.media-studio .section-desc { color: rgba(232, 242, 255, 0.76); max-width: 790px; }

.studio-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.studio-card {
  position: relative;
  overflow: hidden;
  padding: 32px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.07);
  box-shadow: 0 20px 50px rgba(3, 15, 32, 0.18);
}

.studio-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: linear-gradient(90deg, #38bdf8, #818cf8);
}

.studio-photo::before { background: linear-gradient(90deg, #a78bfa, #f472b6); }

.studio-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.studio-kicker {
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: #7dd3fc;
}

.studio-photo .studio-kicker { color: #d8b4fe; }

.studio-format {
  padding: 4px 10px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.78);
}

.studio-card h3 {
  margin: 0 0 10px;
  color: #fff;
  font-size: 1.35rem;
  line-height: 1.3;
}

.studio-card > p {
  min-height: 78px;
  margin: 0 0 24px;
  color: rgba(232, 242, 255, 0.72);
  font-size: 0.92rem;
}

.timeline-demo,
.repair-demo {
  min-height: 90px;
  margin-bottom: 26px;
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  background: rgba(3, 15, 32, 0.32);
}

.timeline-demo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.timeline-time { font: 600 0.72rem "SF Mono", monospace; color: #bae6fd; }

.timeline-rail {
  position: relative;
  flex: 1;
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
}

.timeline-rail i {
  position: absolute;
  left: 18%;
  right: 12%;
  inset-block: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, #38bdf8, #818cf8);
}

.timeline-rail b {
  position: absolute;
  top: 50%;
  width: 16px;
  height: 22px;
  border: 3px solid #e0f2fe;
  border-radius: 5px;
  background: #2563eb;
  transform: translate(-50%, -50%);
}

.timeline-rail b:first-of-type { left: 18%; }
.timeline-rail b:last-of-type { left: 88%; }

.repair-demo {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
}

.repair-before,
.repair-after {
  display: grid;
  place-items: center;
  height: 48px;
  border-radius: 10px;
  font: 700 0.72rem "Plus Jakarta Sans", sans-serif;
}

.repair-before {
  color: rgba(255, 255, 255, 0.55);
  background: repeating-linear-gradient(135deg, rgba(148, 163, 184, 0.22) 0 8px, rgba(148, 163, 184, 0.1) 8px 16px);
  filter: blur(0.4px);
}

.repair-after {
  color: #f5f3ff;
  background: linear-gradient(135deg, #7c3aed, #db2777);
  box-shadow: 0 8px 24px rgba(168, 85, 247, 0.24);
}

.repair-arrow { color: #c4b5fd; font-size: 1.2rem; }

.studio-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.studio-list li {
  position: relative;
  padding-left: 20px;
  color: rgba(232, 242, 255, 0.74);
  font-size: 0.88rem;
}

.studio-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #7dd3fc;
  font-weight: 800;
}

.studio-list strong { color: #fff; }

.studio-safety {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  overflow: hidden;
  margin-top: 24px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.12);
}

.studio-safety > div {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px;
  background: #142f4f;
}

.studio-safety span {
  color: #7dd3fc;
  font-size: 0.78rem;
  font-weight: 800;
}

.studio-safety p { margin: 0; color: rgba(232, 242, 255, 0.68); font-size: 0.8rem; }
.studio-safety strong { display: block; color: #fff; font-size: 0.88rem; }

.studio-note {
  margin: 18px 0 0;
  color: rgba(232, 242, 255, 0.55);
  font-size: 0.78rem;
  text-align: center;
}

/* ── Showcase ── */
.showcase { background: var(--bg-elevated); }

.showcase-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.showcase-tab {
  padding: 10px 18px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}

.showcase-tab.active,
.showcase-tab:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.showcase-panel {
  display: none;
  animation: fadeIn 0.35s ease;
}

.showcase-panel.active { display: block; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.showcase-frame {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow-md);
}

.showcase-caption {
  margin-top: 16px;
  font-size: 0.92rem;
  color: var(--text-muted);
  text-align: center;
}

/* ── Mobile screenshots ── */
.mobile-showcase {
  background: var(--bg);
}

.mobile-shot-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.mobile-shot {
  margin: 0;
  padding: 14px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.mobile-shot:hover {
  transform: translateY(-2px);
  border-color: var(--border);
  box-shadow: var(--shadow-md);
}

.mobile-shot img {
  width: 100%;
  aspect-ratio: 1242 / 2688;
  object-fit: cover;
  object-position: top center;
  border-radius: 12px;
  border: 1px solid var(--border-light);
  background: #f8fbff;
}

.mobile-shot figcaption {
  margin-top: 10px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 700;
}

/* ── Architecture ── */
.arch-diagram {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
  box-shadow: var(--shadow-sm);
}

.arch-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.arch-node {
  text-align: center;
  padding: 24px 28px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
  min-width: 140px;
}

.arch-node-icon { font-size: 2rem; margin-bottom: 8px; }
.arch-node strong { display: block; font-size: 0.95rem; color: var(--primary-dark); }
.arch-node span { font-size: 0.82rem; color: var(--text-muted); }

.arch-arrow {
  font-size: 1.5rem;
  color: var(--text-muted);
}

.arch-api {
  margin-top: 32px;
  padding: 20px 24px;
  background: var(--bg-muted);
  border-radius: var(--radius-sm);
  text-align: center;
  font-family: "SF Mono", "Fira Code", monospace;
  font-size: 0.9rem;
  color: var(--primary-dark);
}

.arch-notes {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 20px;
}

.arch-note {
  padding: 18px 20px;
  background: var(--bg);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
}

.arch-note strong {
  display: block;
  font-size: 0.92rem;
  color: var(--primary-dark);
  margin-bottom: 6px;
}

.arch-note span {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ── Workflow ── */
.workflow { background: var(--bg-elevated); }

.workflow-track {
  display: flex;
  align-items: stretch;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 8px;
}

.workflow-step {
  flex: 1;
  min-width: 200px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
}

.workflow-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 800;
  font-size: 0.9rem;
  margin-bottom: 14px;
}

.workflow-step h4 {
  margin: 0 0 8px;
  font-size: 1rem;
  color: var(--primary-dark);
}

.workflow-step p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.workflow-arrow {
  display: flex;
  align-items: center;
  color: var(--text-muted);
  font-size: 1.4rem;
  flex-shrink: 0;
}

.album-sync-modes {
  margin-top: 48px;
  padding-top: 40px;
  border-top: 1px solid var(--border-light);
}

.album-sync-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin: 0 0 20px;
  text-align: center;
}

.album-sync-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.album-sync-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 20px;
}

.album-sync-card strong {
  display: block;
  font-size: 0.98rem;
  color: var(--primary);
  margin-bottom: 8px;
}

.album-sync-card p {
  margin: 0;
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* ── Scenarios ── */
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.scenario-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 26px 22px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.scenario-card:hover {
  border-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.scenario-icon {
  font-size: 1.6rem;
  display: block;
  margin-bottom: 12px;
}

.scenario-card h4 {
  margin: 0 0 8px;
  font-size: 1.02rem;
  color: var(--primary-dark);
}

.scenario-card p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.platform-tags {
  display: flex;
  gap: 6px;
  justify-content: center;
  margin-top: 14px;
  flex-wrap: wrap;
}

.platform-tags span {
  font-size: 0.78rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 6px;
  background: var(--bg-muted);
  color: var(--text-secondary);
  border: 1px solid var(--border-light);
}

.demo-banner {
  margin-top: 24px;
  padding: 16px 20px;
  background: linear-gradient(135deg, rgba(5, 150, 105, 0.08) 0%, rgba(37, 99, 235, 0.06) 100%);
  border: 1px solid rgba(5, 150, 105, 0.22);
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.demo-banner strong {
  color: var(--primary-dark);
}

.demo-banner a {
  font-weight: 600;
  color: var(--primary);
  word-break: break-all;
}

.demo-banner a.btn-demo,
.demo-banner a.btn-demo:hover {
  color: #fff;
}

.demo-creds {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin-top: 10px;
}

.demo-creds span {
  font-size: 0.88rem;
}

.demo-creds code {
  display: inline;
  background: var(--bg-muted);
  border: 1px solid var(--border-light);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.85rem;
  color: var(--primary-dark);
}

.quickstart-tip {
  margin-top: 32px;
  padding: 18px 22px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.6;
}

.quickstart-tip code {
  display: inline;
  background: rgba(0, 0, 0, 0.25);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.82rem;
  color: #bfdbfe;
}

/* ── Platforms ── */
.platforms-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.platform-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
}

.platform-card .platform-icon { font-size: 2.4rem; margin-bottom: 12px; }
.platform-card h4 { margin: 0 0 6px; font-size: 1.1rem; color: var(--primary-dark); }
.platform-card p { margin: 0 0 16px; font-size: 0.88rem; color: var(--text-muted); }

/* ── Quick start ── */
.quickstart { background: var(--primary-dark); color: #fff; }

.quickstart .section-label { color: #93c5fd; }
.quickstart .section-title { color: #fff; }
.quickstart .section-desc { color: rgba(255,255,255,0.75); }

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.step {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 28px;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--primary);
  font-weight: 800;
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.step h4 {
  margin: 0 0 10px;
  font-size: 1.05rem;
}

.step p {
  margin: 0 0 14px;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.55;
}

.step code {
  display: block;
  background: rgba(0,0,0,0.25);
  padding: 12px 14px;
  border-radius: 8px;
  font-size: 0.82rem;
  font-family: "SF Mono", "Fira Code", monospace;
  overflow-x: auto;
  color: #bfdbfe;
}

/* ── Footer ── */
.site-footer {
  padding: 48px 0 32px;
  border-top: 1px solid var(--border);
  background: var(--bg-elevated);
}

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

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  margin: 12px 0 0;
  max-width: 320px;
}

.footer-col h5 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin: 0 0 16px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-col li { margin-bottom: 10px; }

.footer-col a {
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--border-light);
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 12px;
}

/* ── Language visibility ── */
[lang="en"] .zh-only { display: none !important; }
[lang="zh"] .en-only { display: none !important; }

/* ── Responsive ── */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
  .product-cards,
  .features-grid,
  .studio-grid,
  .mobile-shot-grid,
  .platforms-grid,
  .steps,
  .scenarios-grid,
  .arch-notes { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .workflow-track { flex-direction: column; }
  .workflow-arrow { justify-content: center; transform: rotate(90deg); }
  .album-sync-grid { grid-template-columns: 1fr; }
  .studio-safety { grid-template-columns: 1fr; }
  .studio-card > p { min-height: 0; }
}

@media (min-width: 641px) and (max-width: 960px) {
  .mobile-shot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 992px) {
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex: none;
    flex-direction: column;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    padding: 16px 20px;
    gap: 4px;
  }

  .nav-links.open { display: flex; }

  .nav-links a {
    display: block;
    width: 100%;
    padding: 12px 16px;
  }

  .menu-toggle { display: block; }
}

@media (max-width: 768px) {
  .hero { padding-top: calc(var(--nav-height) + 40px); }
  .hero-float { display: none; }
  section { padding: 56px 0; }
}