/* ===== Variables — 轻快亮色系 ===== */
:root {
  --bg-base: #f8fbff;
  --bg-card: #ffffff;
  --bg-card-hover: #f0f9ff;
  --bg-section: #f0f7ff;
  --bg-section-alt: #fff8f0;
  --text-primary: #1e293b;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --accent: #0ea5e9;
  --accent-light: #0284c7;
  --accent-soft: #e0f2fe;
  --accent-glow: rgba(14, 165, 233, 0.18);
  --gradient-start: #38bdf8;
  --gradient-end: #6366f1;
  --warm: #f97316;
  --warm-soft: #fff7ed;
  --border: #e2e8f0;
  --border-light: #cbd5e1;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
  --shadow-hover: 0 12px 40px rgba(14, 165, 233, 0.12);
  --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --max-width: 1200px;
  --header-height: 72px;
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button, input, textarea { font-family: inherit; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s, box-shadow 0.3s;
}
.header.scrolled {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 2px 16px rgba(15, 23, 42, 0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
}
.logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: #fff;
  box-shadow: 0 4px 12px var(--accent-glow);
}
.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: color 0.2s;
}
.nav a:hover { color: var(--accent-light); }
.nav-cta {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  color: #fff !important;
  padding: 8px 20px;
  border-radius: 8px;
  font-weight: 500;
  box-shadow: 0 4px 14px var(--accent-glow);
}
.nav-cta:hover { opacity: 0.92; transform: translateY(-1px); }
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.menu-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: 0.3s;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
}
.btn-primary {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  color: #fff;
  box-shadow: 0 4px 20px var(--accent-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px var(--accent-glow);
}
.btn-outline {
  background: #fff;
  color: var(--text-primary);
  border: 1px solid var(--border);
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent-light);
  background: var(--accent-soft);
}
.btn-full { width: 100%; }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-height) + 60px) 0 80px;
  overflow: hidden;
  background: linear-gradient(180deg, #eef7ff 0%, #f8fbff 50%, #fff 100%);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 50% at 20% 20%, rgba(56, 189, 248, 0.18), transparent),
    radial-gradient(ellipse 50% 40% at 85% 30%, rgba(99, 102, 241, 0.12), transparent),
    radial-gradient(ellipse 40% 30% at 60% 80%, rgba(249, 115, 22, 0.08), transparent);
  pointer-events: none;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%230ea5e9' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-inner { position: relative; max-width: 800px; }
.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: #fff;
  border: 1px solid rgba(14, 165, 233, 0.25);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--accent-light);
  margin-bottom: 24px;
  box-shadow: 0 2px 8px rgba(14, 165, 233, 0.08);
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}
.gradient-text {
  background: linear-gradient(135deg, #0ea5e9, #6366f1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 640px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}
.stat {
  background: rgba(255, 255, 255, 0.7);
  padding: 16px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.stat strong {
  display: block;
  font-size: 1.5rem;
  color: var(--accent-light);
  margin-bottom: 4px;
}
.stat span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ===== Sections ===== */
.section {
  padding: 100px 0;
}
.section-header {
  text-align: center;
  margin-bottom: 60px;
}
.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 12px;
}
.section-header h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}
.section-desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

/* ===== Pain Points ===== */
.pain-points { background: var(--bg-section); }
.pain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.pain-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all 0.3s;
  box-shadow: var(--shadow);
}
.pain-card:hover {
  border-color: rgba(14, 165, 233, 0.35);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.pain-icon { font-size: 2rem; margin-bottom: 16px; }
.pain-card h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
  color: var(--text-primary);
}
.pain-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== Features ===== */
.features { background: #fff; }
.feature-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.feature-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}
.feature-tab {
  padding: 8px 16px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s;
}
.feature-tab:hover {
  border-color: var(--accent);
  color: var(--accent-light);
  background: var(--accent-soft);
}
.feature-tab.active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent-light);
  font-weight: 600;
}
.feature-panel {
  display: none;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow);
}
.feature-panel.active { display: block; animation: fadeIn 0.3s ease; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.feature-panel h3 {
  font-size: 1.25rem;
  margin-bottom: 20px;
  color: var(--text-primary);
}
.feature-panel li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 12px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}
.feature-panel li::before {
  content: "";
  position: absolute;
  left: 0; top: 10px;
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

/* Mock Screen */
.mock-screen {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-hover);
}
.mock-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  background: #f8fafc;
  border-bottom: 1px solid var(--border);
}
.mock-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--text-muted);
}
.mock-dot:nth-child(1) { background: #fca5a5; }
.mock-dot:nth-child(2) { background: #fcd34d; }
.mock-dot:nth-child(3) { background: #6ee7b7; }
.mock-title {
  margin-left: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.mock-body { padding: 24px; background: #fff; }
.mock-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.mock-label { color: var(--text-secondary); font-size: 0.9rem; }
.mock-value { font-weight: 600; font-size: 1.1rem; color: var(--text-primary); }
.mock-value.accent { color: var(--accent-light); font-size: 1.4rem; }
.mock-queue { margin-top: 20px; display: flex; flex-direction: column; gap: 12px; }
.queue-item {
  padding: 14px 16px;
  border-radius: 10px;
  border-left: 3px solid;
}
.queue-item span { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 4px; color: var(--text-primary); }
.queue-item em { font-style: normal; font-size: 0.8rem; color: var(--text-muted); }
.queue-a { background: #e0f2fe; border-color: var(--accent); }
.queue-b { background: #eef2ff; border-color: #6366f1; }

/* ===== Platform ===== */
.platform { background: var(--bg-section); }
.platform-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.platform-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all 0.3s;
  box-shadow: var(--shadow);
}
.platform-card:hover {
  border-color: rgba(14, 165, 233, 0.35);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.platform-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px; height: 56px;
  border-radius: 14px;
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 20px;
}
.platform-logo.wecom { background: #dcfce7; color: #16a34a; }
.platform-logo.meituan { background: #fef9c3; color: #ca8a04; }
.platform-logo.douyin { background: #ffe4e6; color: #e11d48; }
.platform-card h3 { font-size: 1.15rem; margin-bottom: 16px; color: var(--text-primary); }
.platform-card li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding: 6px 0;
  padding-left: 16px;
  position: relative;
}
.platform-card li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--success);
  font-size: 0.75rem;
  font-weight: 700;
}
.platform-badge {
  position: absolute;
  top: 16px; right: 16px;
  font-size: 0.7rem;
  padding: 4px 10px;
  background: var(--warm-soft);
  color: var(--warm);
  border-radius: 100px;
  border: 1px solid rgba(249, 115, 22, 0.2);
}
.inbox-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
.inbox-step {
  padding: 10px 20px;
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}
.inbox-step.highlight {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent-light);
  font-weight: 600;
}
.inbox-arrow { color: var(--text-muted); font-size: 1.2rem; }

/* ===== Dual End ===== */
.dual-end { background: #fff; }
.dual-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.dual-content h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin: 12px 0 32px;
  line-height: 1.4;
  color: var(--text-primary);
}
.dual-list { display: flex; flex-direction: column; gap: 20px; }
.dual-item {
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: all 0.2s;
}
.dual-item:hover {
  border-color: rgba(14, 165, 233, 0.3);
  background: var(--accent-soft);
}
.dual-item strong { display: block; margin-bottom: 6px; color: var(--text-primary); }
.dual-item p { font-size: 0.9rem; color: var(--text-secondary); }
.dual-devices {
  position: relative;
  height: 380px;
}
.device {
  position: absolute;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hover);
}
.device.desktop {
  width: 85%;
  top: 0; left: 0;
  border-radius: var(--radius-lg);
}
.device.mobile {
  width: 160px;
  bottom: 0; right: 0;
  border-radius: 24px;
  border-width: 3px;
  border-color: #e2e8f0;
}
.device-screen { padding: 16px; background: #fff; }
.screen-nav {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.screen-cards {
  display: flex;
  gap: 8px;
}
.screen-card {
  flex: 1;
  padding: 12px 8px;
  background: var(--accent-soft);
  border-radius: 8px;
  font-size: 0.75rem;
  text-align: center;
  color: var(--accent-light);
  font-weight: 600;
}
.mobile-header {
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 12px;
  text-align: center;
  color: var(--text-primary);
}
.mobile-step {
  font-size: 0.7rem;
  padding: 6px 0;
  color: var(--text-muted);
}
.mobile-step.done { color: var(--success); }
.mobile-step.active { color: var(--accent-light); font-weight: 600; }
.mobile-btn {
  width: 100%;
  margin-top: 12px;
  padding: 8px;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  border: none;
  border-radius: 8px;
  color: #fff;
  font-size: 0.7rem;
  cursor: pointer;
}

/* ===== Workflow ===== */
.workflow { background: var(--bg-section-alt); }
.workflow-steps {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0;
}
.wf-step {
  flex: 1;
  text-align: center;
  padding: 0 12px;
}
.wf-num {
  width: 48px; height: 48px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
  box-shadow: 0 4px 14px var(--accent-glow);
}
.wf-step h3 { font-size: 1rem; margin-bottom: 8px; color: var(--text-primary); }
.wf-step p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.6; }
.wf-line {
  flex: 0 0 40px;
  height: 2px;
  background: var(--border);
  margin-top: 24px;
}

/* ===== Audience ===== */
.audience { background: #fff; }
.audience-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.audience-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow);
  transition: all 0.2s;
}
.audience-card:hover {
  border-color: rgba(14, 165, 233, 0.3);
  box-shadow: var(--shadow-hover);
}
.audience-card h3 {
  font-size: 1.1rem;
  margin-bottom: 12px;
  color: var(--accent-light);
}
.audience-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}
.compare-table {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.compare-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  align-items: center;
  font-size: 0.9rem;
}
.compare-row:last-child { border-bottom: none; }
.compare-head {
  background: #f8fafc;
  font-weight: 600;
  color: var(--text-secondary);
}
.compare-row .bad { color: var(--danger); text-align: center; }
.compare-row .warn { color: var(--warning); text-align: center; }
.compare-row .good { color: var(--success); text-align: center; font-weight: 600; }
.highlight-col { background: var(--accent-soft); }

/* ===== Roadmap ===== */
.roadmap { background: var(--bg-section); }
.roadmap-timeline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.roadmap-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
  box-shadow: var(--shadow);
}
.roadmap-item.current {
  border-color: var(--accent);
  box-shadow: 0 8px 32px var(--accent-glow);
  background: linear-gradient(180deg, #fff 0%, #f0f9ff 100%);
}
.roadmap-item.current::before {
  content: "进行中";
  position: absolute;
  top: -10px; right: 20px;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  color: #fff;
  font-size: 0.7rem;
  padding: 4px 12px;
  border-radius: 100px;
  font-weight: 600;
  box-shadow: 0 2px 8px var(--accent-glow);
}
.roadmap-phase {
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 8px;
}
.roadmap-item h3 { font-size: 1.1rem; margin-bottom: 10px; color: var(--text-primary); }
.roadmap-item p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.6; }

/* ===== Contact ===== */
.contact {
  background: linear-gradient(180deg, #fff 0%, #eef7ff 100%);
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.contact-info h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin: 12px 0 20px;
  color: var(--text-primary);
}
.contact-info > p {
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.8;
}
.contact-perks li {
  padding: 8px 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
}
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-hover);
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-weight: 500;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: border-color 0.2s, background 0.2s;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.12);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }
.form-note {
  margin-top: 12px;
  font-size: 0.85rem;
  text-align: center;
  min-height: 20px;
}
.form-note.success { color: var(--success); }
.form-note.error { color: var(--danger); }

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--border);
  padding-top: 60px;
  background: #fff;
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}
.footer-brand p {
  margin-top: 12px;
  font-size: 0.9rem;
  color: var(--text-muted);
  max-width: 320px;
}
.footer-links {
  display: flex;
  gap: 60px;
}
.footer-links h4 {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}
.footer-links a {
  display: block;
  font-size: 0.9rem;
  color: var(--text-muted);
  padding: 4px 0;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--accent-light); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  background: #f8fafc;
}
.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .pain-grid,
  .platform-grid,
  .audience-grid,
  .roadmap-timeline { grid-template-columns: repeat(2, 1fr); }
  .feature-showcase,
  .dual-grid,
  .contact-grid { grid-template-columns: 1fr; }
  .feature-visual { order: -1; }
  .dual-devices { height: 320px; margin-top: 20px; }
}

@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
    transform: translateY(-120%);
    opacity: 0;
    transition: all 0.3s;
    pointer-events: none;
  }
  .nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  .menu-toggle { display: flex; }
  .menu-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .menu-toggle.open span:nth-child(2) { opacity: 0; }
  .menu-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

  .hero-stats { grid-template-columns: 1fr; gap: 16px; }
  .pain-grid,
  .platform-grid,
  .audience-grid,
  .roadmap-timeline { grid-template-columns: 1fr; }

  .workflow-steps {
    flex-direction: column;
    align-items: center;
    gap: 0;
  }
  .wf-line {
    width: 2px;
    height: 32px;
    flex: none;
    margin: 0;
  }
  .wf-step { padding: 16px 0; }

  .compare-row {
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    padding: 12px 16px;
    font-size: 0.8rem;
  }

  .inbox-flow { flex-direction: column; }
  .inbox-arrow { transform: rotate(90deg); }

  .footer-inner { grid-template-columns: 1fr; }
  .section { padding: 72px 0; }
}