/* =============================================
   infomator.ai 官网 - 共享样式
   版本：v3.0
   ============================================= */

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-primary: #08090f;
  --bg-secondary: #0d0f1a;
  --bg-card: #111527;
  --bg-card-hover: #161c34;
  --border: #1e2540;
  --border-light: #252d4a;

  --blue: #4f6ef7;
  --blue-light: #6b84fa;
  --blue-dark: #3a55e0;
  --cyan: #22d3ee;
  --purple: #8b5cf6;
  --orange: #f97316;
  --green: #10b981;
  --yellow: #f59e0b;

  --text-primary: #e8eaf0;
  --text-secondary: #8892b0;
  --text-muted: #4a5578;

  --grad-blue: linear-gradient(135deg, #4f6ef7 0%, #8b5cf6 100%);
  --grad-cyan: linear-gradient(135deg, #22d3ee 0%, #4f6ef7 100%);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --shadow-card: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 40px rgba(79,110,247,0.15);

  --nav-height: 68px;
  --nav-max-width: 1440px;
  --max-width: 1200px;
  --section-padding: 96px 24px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

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

section { padding: var(--section-padding); }

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  background: rgba(8,9,15,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
}

.nav-inner {
  max-width: var(--nav-max-width);
  margin: 0 auto;
  padding: 0 40px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color 0.2s;
  white-space: nowrap;
}

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

.nav-cta {
  background: var(--blue);
  color: #fff !important;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  transition: background 0.2s, transform 0.15s;
}
.nav-cta:hover {
  background: var(--blue-light) !important;
  transform: translateY(-1px);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.persona-switcher {
  position: relative;
}

.persona-current {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 36px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: rgba(17,21,39,0.85);
  color: var(--text-primary);
  padding: 0 10px;
  font-size: 13px;
  cursor: pointer;
}

.persona-arrow {
  color: var(--text-secondary);
  font-size: 11px;
}

.persona-menu {
  position: absolute;
  right: 0;
  top: 42px;
  width: 190px;
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 8px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  background: rgba(13,15,26,0.98);
  box-shadow: 0 14px 42px rgba(0,0,0,0.5);
  z-index: 1200;
}

.persona-menu.open {
  display: flex;
}

.persona-item {
  border: none;
  width: 100%;
  text-align: left;
  background: transparent;
  color: var(--text-secondary);
  font-size: 13px;
  border-radius: var(--radius-sm);
  padding: 7px 10px;
  cursor: pointer;
}

.persona-item:hover,
.persona-item.active {
  background: rgba(79,110,247,0.14);
  color: var(--text-primary);
}

.nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 4px;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  white-space: nowrap;
}

.btn-primary {
  background: var(--blue);
  color: #fff;
}
.btn-primary:hover { background: var(--blue-light); transform: translateY(-1px); }

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}
.btn-secondary:hover { border-color: var(--blue); color: var(--blue); transform: translateY(-1px); }

.btn-ghost {
  background: transparent;
  color: var(--blue);
  padding: 10px 16px;
}
.btn-ghost:hover { background: rgba(79,110,247,0.1); }

.btn-outline-cyan {
  background: transparent;
  color: var(--cyan);
  border: 1px solid var(--cyan);
}
.btn-outline-cyan:hover { background: rgba(34,211,238,0.1); transform: translateY(-1px); }

.btn-lg { padding: 14px 32px; font-size: 15px; }

/* --- Hero Section --- */
.hero {
  padding-top: calc(var(--nav-height) + 80px);
  padding-bottom: 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px; left: 50%;
  transform: translateX(-50%);
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(79,110,247,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(79,110,247,0.12);
  border: 1px solid rgba(79,110,247,0.3);
  color: var(--blue-light);
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 13px;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(36px, 6vw, 56px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -1.5px;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.hero h1 .grad {
  background: var(--grad-blue);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero h1 .cyan {
  color: var(--cyan);
  -webkit-text-fill-color: var(--cyan);
}

.hero-subtitle {
  font-size: clamp(16px, 2.5vw, 20px);
  color: var(--cyan);
  font-weight: 500;
  margin-bottom: 16px;
}

.hero-desc {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 16px;
  line-height: 1.7;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 32px;
}

.hero-tag {
  font-size: 13px;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  padding: 4px 12px;
  border-radius: 100px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 64px;
}

/* --- Section Headers --- */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-header h2 .cyan {
  color: var(--cyan);
}

.section-header p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 660px;
  margin: 0 auto;
  line-height: 1.7;
}

/* --- Cards --- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  border-color: var(--border-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.card-icon {
  width: 44px; height: 44px;
  background: rgba(79,110,247,0.12);
  border: 1px solid rgba(79,110,247,0.2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 16px;
}

.card-icon.cyan {
  background: rgba(34,211,238,0.12);
  border-color: rgba(34,211,238,0.2);
}

.card-icon.green {
  background: rgba(16,185,129,0.12);
  border-color: rgba(16,185,129,0.2);
}

.card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.card-tagline {
  font-size: 13px;
  color: var(--cyan);
  margin-bottom: 12px;
}

.card p, .card-body {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.card ul li {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 4px 0;
  padding-left: 16px;
  position: relative;
}
.card ul li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--blue);
}

.card-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 16px;
}

/* --- Grids --- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

/* --- Status Badges --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 500;
}
.badge-online { background: rgba(16,185,129,0.15); color: var(--green); border: 1px solid rgba(16,185,129,0.3); }
.badge-dev { background: rgba(245,158,11,0.15); color: var(--yellow); border: 1px solid rgba(245,158,11,0.3); }
.badge-plan { background: rgba(139,92,246,0.15); color: var(--purple); border: 1px solid rgba(139,92,246,0.3); }
.badge-soon { background: rgba(34,211,238,0.12); color: var(--cyan); border: 1px solid rgba(34,211,238,0.25); }

/* --- Stats Row --- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 24px;
  padding: 48px 0;
}

.stat-item { text-align: center; }

.stat-number {
  font-size: 36px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -1px;
  line-height: 1;
  margin-bottom: 6px;
}
.stat-number span { color: var(--blue); }

.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
}

/* --- CTA Section --- */
.cta-section {
  background: linear-gradient(135deg, rgba(240,242,255,0.95) 0%, rgba(230,235,255,0.95) 100%);
  text-align: center;
  padding: 80px 24px;
}

.cta-section h2 {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
  color: var(--blue);
}

.cta-section p {
  font-size: 16px;
  color: #555;
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

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

.cta-section .btn-primary {
  background: var(--blue);
  color: #fff;
}

.cta-section .btn-secondary {
  background: transparent;
  color: #333;
  border: 1px solid #ccc;
}
.cta-section .btn-secondary:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.cta-contact {
  font-size: 14px;
  color: #888;
}
.cta-contact a { color: #666; }
.cta-contact a:hover { color: var(--blue); }

/* --- Footer --- */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 56px 24px 32px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

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

.footer-brand .logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.footer-brand .logo span { color: var(--blue); }

.footer-brand p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 260px;
}

.footer-col h4 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

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

.footer-col ul li a {
  font-size: 13px;
  color: var(--text-muted);
  transition: color 0.2s;
}
.footer-col ul li a:hover { color: var(--text-primary); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 12px;
  color: var(--text-muted);
}

/* --- Modal --- */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.modal-overlay.active { display: flex; }

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 40px;
  max-width: 480px;
  width: 100%;
  position: relative;
  box-shadow: 0 24px 64px rgba(0,0,0,0.5);
}

.modal-close {
  position: absolute;
  top: 16px; right: 16px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 20px;
  cursor: pointer;
  width: 32px; height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: background 0.2s;
}
.modal-close:hover { background: rgba(255,255,255,0.05); }

.modal h3 { font-size: 22px; font-weight: 700; margin-bottom: 8px; }
.modal p { font-size: 14px; color: var(--text-secondary); margin-bottom: 24px; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 6px; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 10px 14px;
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { outline: none; border-color: var(--blue); }
.form-group textarea { resize: vertical; min-height: 100px; }

/* --- Four-Layer Architecture (Platform page) --- */
.arch4-section {
  background: #0d0f1a;
  padding: 0;
}

.arch4-wrap {
  max-width: 1440px;
  margin: 0 auto;
  padding: 80px 120px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
}

.arch4-head {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
  text-align: center;
}

.arch4-title {
  font-size: 36px;
  font-weight: 700;
  color: #e8eaf0;
  line-height: 1.2;
}

.arch4-sub {
  font-size: 16px;
  color: #8892b0;
  line-height: 1.4;
}

.arch4-stack {
  width: 800px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.arch4-row {
  width: 100%;
  min-height: 54px;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  border-radius: 6px;
  border: 1px solid #1e2540;
  background: #111527;
}

.arch4-pill {
  background: #4f6ef71f;
  border: 1px solid #4f6ef733;
  color: #4f6ef7;
  border-radius: 4px;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 700;
  white-space: nowrap;
}

.arch4-name {
  font-size: 15px;
  font-weight: 600;
  color: #e8eaf0;
  white-space: nowrap;
}

.arch4-desc {
  font-size: 13px;
  color: #8892b0;
}

.arch4-cross {
  width: 800px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.arch4-cross-item {
  border-radius: 6px;
  border: 1px solid #4f6ef733;
  background: #4f6ef70f;
  padding: 14px 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.arch4-cross-title {
  font-size: 12px;
  font-weight: 600;
  color: #6b84fa;
}

.arch4-cross-desc {
  font-size: 12px;
  color: #8892b0;
}

/* --- Tab Nav --- */
.tab-nav {
  display: flex;
  gap: 4px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 4px;
  margin-bottom: 40px;
  overflow-x: auto;
}

.tab-btn {
  flex: 1;
  min-width: 120px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
  font-family: inherit;
}
.tab-btn.active,
.tab-btn:hover { background: rgba(79,110,247,0.15); color: var(--text-primary); }
.tab-btn.active { color: var(--blue-light); }

.tab-content { display: none; }
.tab-content.active { display: block; }

/* --- Timeline --- */
.timeline { position: relative; padding-left: 32px; }

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px; bottom: 8px;
  width: 2px;
  background: var(--border-light);
}

.timeline-item { position: relative; margin-bottom: 40px; }

.timeline-item::before {
  content: '';
  position: absolute;
  left: -38px; top: 6px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--blue);
  border: 2px solid var(--bg-primary);
  box-shadow: 0 0 0 3px rgba(79,110,247,0.2);
}

.timeline-year { font-size: 13px; font-weight: 700; color: var(--blue); margin-bottom: 8px; }
.timeline-content h4 { font-size: 16px; font-weight: 600; color: var(--text-primary); margin-bottom: 6px; }
.timeline-content p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }

/* --- Steps --- */
.steps-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}
.steps-row::before {
  content: '';
  position: absolute;
  top: 24px; left: 12.5%; right: 12.5%;
  height: 2px;
  background: var(--border-light);
  z-index: 0;
}

.step-item { text-align: center; position: relative; z-index: 1; }

.step-num {
  width: 48px; height: 48px;
  background: var(--bg-card);
  border: 2px solid var(--blue);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: var(--blue);
  margin: 0 auto 16px;
}

.step-title { font-size: 15px; font-weight: 600; color: var(--text-primary); margin-bottom: 8px; }
.step-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }

/* --- Capability Detail Card (Platform page) --- */
.platform-capabilities {
  padding: 0;
}

.platform-cap-wrap {
  max-width: 1440px;
  margin: 0 auto;
  padding: 80px 120px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.platform-cap-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.cap-detail {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  margin-bottom: 0;
}

.cap-detail-header {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
}

.cap-icon {
  width: 52px;
  height: 52px;
  border-radius: 10px;
  border: 1px solid #4f6ef733;
  background: #4f6ef71f;
  color: #6b84fa;
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.cap-detail-headtext {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.cap-detail-header h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.cap-detail-tagline {
  font-size: 14px;
  color: var(--cyan);
  margin-bottom: 0;
}

.cap-detail-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

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

.cap-detail-body h4 {
  font-size: 14px;
  font-weight: 600;
  color: #8892b0;
  margin-bottom: 12px;
}

.cap-detail-body ul li {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 2px 0 2px 16px;
  line-height: 1.6;
  position: relative;
}
.cap-detail-body ul li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--text-secondary);
}

.shadow-browser-box {
  width: 100%;
  background: #4f6ef70f;
  border: 1px solid #4f6ef733;
  border-radius: 10px;
  padding: 16px 20px;
  font-size: 14px;
  color: #8892b0;
  line-height: 1.7;
}

.cef-box {
  width: 100%;
  background: #0d0f1a;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.cef-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--blue);
}

.cef-text {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.cef-arrow {
  font-size: 18px;
  color: var(--border-light);
  line-height: 1;
}

.coverage-box {
  width: 100%;
  background: #4f6ef70f;
  border: 1px solid #4f6ef733;
  border-radius: 10px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 4px;
}

.coverage-num {
  font-size: 28px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--text-primary);
}

.coverage-sub {
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-secondary);
}

.coverage-list {
  font-size: 13px;
  width: 100%;
  text-align: center;
  color: var(--text-secondary);
  line-height: 1.6;
}

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

.security-box {
  width: 100%;
  background: #4f6ef70f;
  border: 1px solid #4f6ef733;
  border-radius: 10px;
  padding: 16px 20px;
}

.security-box h4 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.security-box ul li {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 2px 0 2px 16px;
  line-height: 1.6;
  position: relative;
}

.security-box ul li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--text-secondary);
}

/* --- Solution Panel --- */
.solution-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.solution-panel h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.solution-panel .solution-audience {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.solution-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

.solution-grid h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.solution-grid ul li {
  font-size: 13px;
  color: var(--text-secondary);
  padding: 3px 0 3px 16px;
  position: relative;
}
.solution-grid ul li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--blue);
}

.solution-cta {
  display: flex;
  gap: 12px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

/* --- Solutions Page (v3 1:1) --- */
.solutions-page .sol-hero {
  padding-bottom: 56px;
}

.sol-hero-badge {
  background: #4f6ef71a;
  border: 1px solid #4f6ef733;
  color: #6b84fa;
  font-size: 12px;
  padding: 4px 12px;
  margin-bottom: 20px;
}

.solutions-page .hero h1 {
  font-size: clamp(42px, 6vw, 58px);
  line-height: 1.18;
  margin-bottom: 14px;
}

.solutions-page .hero-desc {
  max-width: 700px;
  font-size: 13px;
  color: #5f6888;
  margin-bottom: 20px;
}

.solutions-page .hero-actions .btn {
  padding: 9px 18px;
  font-size: 12px;
  border-radius: 6px;
}

.sol-tabs-section {
  padding: 0 24px 72px;
}

.sol-shell {
  max-width: 1200px;
  margin: 0 auto;
}

.sol-tabs {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border: 1px solid #1e2540;
  border-radius: 10px;
  overflow: hidden;
  background: #111527;
  margin-bottom: 16px;
}

.sol-tab-btn {
  height: 44px;
  border: none;
  border-right: 1px solid #1e2540;
  background: transparent;
  color: #667293;
  font-size: 13px;
  font-weight: 500;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  cursor: pointer;
}

.sol-tab-btn span {
  font-size: 12px;
  line-height: 1;
}

.sol-tab-btn:last-child {
  border-right: none;
}

.sol-tab-btn:hover {
  background: #151b36;
  color: #8d98b8;
}

.sol-tab-btn.active {
  background: #1d2550;
  color: #6f86fa;
}

.solutions-page .solution-panel {
  display: none;
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 0;
}

.solutions-page .solution-panel.active {
  display: block;
}

.sol-panel-card {
  background: #111527;
  border: 1px solid #1e2540;
  border-radius: 16px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.sol-panel-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.sol-panel-head h2 {
  font-size: 28px;
  line-height: 1.2;
  font-weight: 700;
  color: #e8eaf0;
  margin-bottom: 6px;
}

.sol-panel-head p {
  font-size: 12px;
  color: #5f6888;
  line-height: 1.6;
}

.sol-head-actions {
  display: flex;
  gap: 8px;
}

.sol-head-actions .btn,
.sol-actions .btn,
.sol-plan-card .btn {
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 12px;
}

.sol-block-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: #5f6888;
}

.sol-pain-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.sol-pain-item {
  background: #0d0f1a;
  border: 1px solid #1e2540;
  border-radius: 6px;
  padding: 10px 12px;
}

.sol-pain-item h4 {
  font-size: 12px;
  font-weight: 600;
  color: #cfd6e7;
  margin-bottom: 4px;
}

.sol-pain-item p {
  font-size: 11px;
  line-height: 1.55;
  color: #667293;
}

.sol-verify-grid,
.sol-dim-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.sol-verify-item {
  background: #0d0f1a;
  border: 1px solid #1e2540;
  border-radius: 6px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sol-mini-badge {
  width: fit-content;
  padding: 2px 7px;
  border-radius: 100px;
  font-size: 10px;
  font-weight: 600;
}

.sol-mini-badge.online {
  color: #10b981;
  background: #10b98126;
  border: 1px solid #10b9814d;
}

.sol-mini-badge.plan {
  color: #8b5cf6;
  background: #8b5cf626;
  border: 1px solid #8b5cf64d;
}

.sol-mini-badge.dev {
  color: #f59e0b;
  background: #f59e0b26;
  border: 1px solid #f59e0b4d;
}

.sol-verify-item h5 {
  font-size: 13px;
  font-weight: 600;
  color: #e8eaf0;
}

.sol-verify-item p {
  font-size: 12px;
  line-height: 1.5;
  color: #8892b0;
}

.sol-state-dot {
  width: fit-content;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 12px;
  line-height: 1;
  border: 1px solid transparent;
}

.sol-state-dot.state-green {
  color: #10b981;
  background: #10b98126;
  border-color: #10b9814d;
}

.sol-state-dot.state-cyan {
  color: #22d3ee;
  background: #22d3ee1f;
  border-color: #22d3ee40;
}

.sol-state-dot.state-purple {
  color: #8b5cf6;
  background: #8b5cf626;
  border-color: #8b5cf64d;
}

.sol-state-dot.state-orange {
  color: #f59e0b;
  background: #f59e0b26;
  border-color: #f59e0b4d;
}

.sol-online-box {
  background: #0d0f1a;
  border: 1px solid #1e2540;
  border-radius: 6px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sol-online-head {
  display: flex;
  align-items: center;
  gap: 8px;
}

.sol-online-head strong {
  font-size: 13px;
  color: #cfd6e7;
}

.sol-online-box p {
  font-size: 11px;
  color: #667293;
  line-height: 1.55;
}

.sol-dot-list li {
  font-size: 11px;
  color: #667293;
  line-height: 1.55;
  padding: 2px 0 2px 12px;
  position: relative;
}

.sol-dot-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: #667293;
}

.sol-value-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.sol-value-chip {
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 10px;
  color: #6b84fa;
  border: 1px solid #4f6ef74d;
  background: #4f6ef71a;
}

.sol-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.sol-plan-card {
  background: #111527;
  border: 1px solid #1e2540;
  border-radius: 16px;
  padding: 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.sol-plan-card h3 {
  font-size: 30px;
  line-height: 1.2;
  font-weight: 700;
  color: #e8eaf0;
}

.sol-plan-sub {
  font-size: 12px;
  color: #5f6888;
  line-height: 1.6;
}

.sol-plan-grid {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.sol-plan-item {
  background: #0d0f1a;
  border: 1px solid #1e2540;
  border-radius: 6px;
  padding: 9px 12px;
  text-align: left;
  font-size: 11px;
  color: #8d98b8;
}

.sol-plan-note {
  font-size: 11px;
  color: #5f6888;
  line-height: 1.55;
}

.sol-cross-section {
  padding: 0 24px 80px;
}

.sol-cross-box {
  border-radius: 32px;
  border: 1px solid rgba(126, 145, 255, 0.55);
  background: radial-gradient(circle at 50% -12%, rgba(151, 97, 255, 0.68) 0%, rgba(109, 117, 255, 0.84) 42%, rgba(80, 108, 247, 0.92) 100%);
  padding: 92px 24px;
  text-align: center;
}

.sol-cross-box h2 {
  font-size: 72px;
  line-height: 1.12;
  color: #e8eaf0;
  letter-spacing: -1px;
  margin-bottom: 24px;
}

.sol-cross-quote {
  font-size: 21px;
  line-height: 1.65;
  color: #8694c0;
  font-style: italic;
  margin-bottom: 48px;
}

.sol-formula-bar {
  display: inline-flex;
  align-items: center;
  gap: 28px;
  background: #09102a;
  border: 1px solid rgba(121, 138, 214, 0.45);
  border-radius: 24px;
  padding: 20px 42px;
  font-size: 23px;
  font-weight: 700;
}

.sol-formula-bar .blue {
  color: #4f6ef7;
}

.sol-formula-bar .cyan {
  color: #22d3ee;
}

.sol-formula-bar .green {
  color: #10b981;
}

.sol-formula-bar .sign {
  color: #6a7598;
}

.solutions-cta {
  background: linear-gradient(180deg, rgba(79,110,247,0.08) 0%, rgba(139,92,246,0.08) 100%);
  border-top: 1px solid #1e2540;
  border-bottom: 1px solid #1e2540;
  text-align: center;
  padding: 80px 24px;
}

.solutions-cta .container {
  max-width: 1440px;
  padding: 0 120px;
}

.solutions-cta h2 {
  color: #e8eaf0;
  font-size: clamp(32px, 4vw, 36px);
  font-weight: 700;
  letter-spacing: -0.5px;
  line-height: 1.2;
  margin-bottom: 24px;
}

.solutions-cta p {
  color: #8892b0;
  font-size: 16px;
  margin: 0 0 24px;
}

.solutions-cta .cta-actions {
  gap: 12px;
  margin-bottom: 0;
}

.solutions-cta .btn {
  min-width: 0;
  padding: 14px 32px;
  font-size: 15px;
  border-radius: 6px;
}

.solutions-cta .btn-primary {
  background: #4f6ef7;
  color: #fff;
}

.solutions-cta .btn-secondary {
  border: 1px solid #252d4a;
  color: #e8eaf0;
  background: transparent;
}

/* --- Product Card --- */
.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color 0.2s, transform 0.2s;
}
.product-card:hover { border-color: var(--border-light); transform: translateY(-2px); }

.product-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}
.product-card h3 { font-size: 18px; font-weight: 700; }
.product-card .product-desc { font-size: 14px; color: var(--text-secondary); margin-bottom: 16px; line-height: 1.6; }
.product-card .product-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.plist-section {
  padding: 0;
}

.plist-wrap {
  max-width: 1440px;
  margin: 0 auto;
  padding: 48px 120px 80px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.plist-title-wrap {
  width: 100%;
  display: flex;
  justify-content: center;
}

.plist-title {
  font-size: 36px;
  font-weight: 700;
  color: #e8eaf0;
}

.plist-filters {
  width: 100%;
  display: flex;
  justify-content: center;
  gap: 8px;
}

.plist-filter {
  border: 1px solid #1e2540;
  border-radius: 100px;
  background: #111527;
  color: #8892b0;
  font-size: 14px;
  font-weight: 400;
  padding: 8px 20px;
  cursor: pointer;
}

.plist-filter.active {
  background: #4f6ef71a;
  border-color: #4f6ef7;
  color: #6b84fa;
}

.plist-cards {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.plist-card {
  width: 100%;
  background: #111527;
  border: 1px solid #1e2540;
  border-radius: 24px;
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.plist-card-head {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.plist-card-head h3 {
  font-size: 22px;
  font-weight: 700;
  color: #e8eaf0;
}

.plist-badge {
  border-radius: 100px;
  padding: 3px 10px;
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
}

.plist-badge.online {
  color: #10b981;
  border: 1px solid #10b9814d;
  background: #10b98126;
}

.plist-badge.dev {
  color: #f59e0b;
  border: 1px solid #f59e0b4d;
  background: #f59e0b26;
}

.plist-desc {
  max-width: 640px;
  color: #8892b0;
  font-size: 15px;
  line-height: 1.7;
}

.plist-columns {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.plist-col h4,
.plist-scene-title {
  color: #8892b0;
  font-size: 13px;
  font-weight: 600;
  margin: 0;
}

.plist-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.plist-col p,
.plist-fulltext {
  color: #8892b0;
  font-size: 14px;
  line-height: 1.6;
  white-space: pre-line;
}

.plist-actions {
  display: flex;
  gap: 12px;
}

.plist-scenes {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
}

.plist-scene {
  background: #0d0f1a;
  border: 1px solid #1e2540;
  border-radius: 10px;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.plist-scene-label {
  color: #4f6ef7;
  font-size: 12px;
  font-weight: 600;
}

.plist-scene-head {
  display: flex;
  align-items: center;
  gap: 6px;
}

.plist-scene-icon {
  color: #4f6ef7;
  font-size: 10px;
  line-height: 1;
}

.plist-scene p {
  color: #8892b0;
  font-size: 12px;
  line-height: 1.5;
}

.plist-compare {
  display: flex;
  align-items: center;
  gap: 16px;
}

.plist-compare-box {
  flex: 1;
  border-radius: 10px;
  padding: 16px;
  border: 1px solid #1e2540;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.plist-compare-box.dark {
  background: #0d0f1a;
}

.plist-compare-box.blue {
  background: #4f6ef714;
  border-color: #4f6ef74d;
}

.plist-compare-box div {
  color: #8892b0;
  font-size: 13px;
}

.plist-compare-box strong {
  font-size: 20px;
  font-weight: 700;
}

.plist-compare-box.dark strong {
  color: #4a5578;
}

.plist-compare-box.blue strong {
  color: #22d3ee;
}

.plist-compare-arrow {
  color: #4f6ef7;
  font-size: 16px;
}

.plist-metrics {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 12px;
}

.plist-metric {
  border-radius: 10px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: center;
}

.plist-metric strong {
  font-size: 20px;
  font-weight: 700;
}

.plist-metric span {
  color: #8892b0;
  font-size: 12px;
}

.plist-metric.metric-blue {
  background: #4f6ef714;
  border: 1px solid #4f6ef733;
}

.plist-metric.metric-blue strong {
  color: #4f6ef7;
}

.plist-metric.metric-green {
  background: #10b98114;
  border: 1px solid #10b98133;
}

.plist-metric.metric-green strong {
  color: #10b981;
}

.proadmap-section {
  background: #0d0f1a;
  padding: 0;
}

.proadmap-wrap {
  max-width: 1440px;
  margin: 0 auto;
  padding: 64px 120px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}

.proadmap-head h2 {
  color: #e8eaf0;
  font-size: 36px;
  font-weight: 700;
}

.proadmap-grid {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.proadmap-card {
  width: 100%;
  background: #111527;
  border: 1px solid #1e2540;
  border-radius: 10px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.proadmap-badge {
  width: fit-content;
  border-radius: 100px;
  padding: 3px 10px;
  font-size: 12px;
  font-weight: 500;
  color: #8b5cf6;
  border: 1px solid #8b5cf64d;
  background: #8b5cf626;
}

.proadmap-card h3 {
  color: #e8eaf0;
  font-size: 17px;
  font-weight: 600;
}

.proadmap-card p {
  color: #8892b0;
  font-size: 14px;
  line-height: 1.6;
}

.proadmap-note {
  width: 100%;
  color: #4a5578;
  text-align: center;
  font-size: 13px;
  line-height: 1.6;
}

/* --- Product Page Mobile Optimization --- */
@media (max-width: 1024px) {
  .plist-wrap,
  .proadmap-wrap {
    padding-left: 32px;
    padding-right: 32px;
  }

  .plist-columns {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .plist-scenes {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .plist-wrap {
    padding: 40px 16px 64px;
    gap: 18px;
  }

  .plist-title {
    font-size: 30px;
    text-align: center;
  }

  .plist-filters {
    justify-content: flex-start;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 4px;
  }

  .plist-filter {
    flex: 0 0 auto;
  }

  .plist-card {
    padding: 20px 16px;
    border-radius: 16px;
    gap: 14px;
  }

  .plist-card-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .plist-card-head h3 {
    font-size: 20px;
    line-height: 1.35;
  }

  .plist-desc {
    max-width: none;
    font-size: 14px;
    line-height: 1.65;
  }

  .plist-columns {
    gap: 16px;
  }

  .plist-actions {
    flex-direction: column;
  }

  .plist-actions .btn {
    width: 100%;
    justify-content: center;
    white-space: normal;
  }

  .plist-scenes {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .plist-compare {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .plist-compare-arrow {
    align-self: center;
    transform: rotate(90deg);
  }

  .plist-metrics {
    grid-template-columns: 1fr;
  }

  .proadmap-wrap {
    padding: 48px 16px;
    gap: 18px;
  }

  .proadmap-head h2 {
    font-size: 30px;
    text-align: center;
  }

  .proadmap-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .proadmap-card {
    padding: 18px;
  }

  .proadmap-note {
    text-align: left;
    font-size: 12px;
    line-height: 1.7;
  }
}

@media (max-width: 420px) {
  .plist-filter {
    padding: 7px 14px;
    font-size: 13px;
  }

  .plist-card-head h3 {
    font-size: 18px;
  }
}

.product-details {
  margin-top: 14px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-secondary);
}

.product-details.is-open {
  display: block;
}

.fade-in-start {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.fade-in-ready {
  opacity: 1;
  transform: translateY(0);
}

/* --- Trust Card (Cases page) --- */
.trust-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.trust-card .trust-icon {
  width: 44px; height: 44px;
  background: rgba(79,110,247,0.12);
  border: 1px solid rgba(79,110,247,0.2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 16px;
}

.trust-card h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.trust-card p { font-size: 13px; color: var(--text-secondary); line-height: 1.7; }

/* --- Case Study --- */
.case-study {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.case-study h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
.case-study .case-subtitle { font-size: 14px; color: var(--cyan); margin-bottom: 24px; }

.case-body { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.case-body h4 { font-size: 15px; font-weight: 600; color: var(--text-primary); margin-bottom: 10px; }
.case-body ul li {
  font-size: 13px;
  color: var(--text-secondary);
  padding: 3px 0 3px 16px;
  position: relative;
}
.case-body ul li::before { content: '•'; position: absolute; left: 0; color: var(--blue); }

/* --- Contact Section --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.contact-card h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  font-size: 14px;
  color: var(--text-secondary);
}

.contact-item a {
  color: var(--text-secondary);
  transition: color 0.2s;
}
.contact-item a:hover { color: var(--blue); }

/* --- Responsive --- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .steps-row { grid-template-columns: repeat(2, 1fr); }
  .steps-row::before { display: none; }
  .arch4-wrap { padding: 72px 32px; }
  .arch4-stack, .arch4-cross { width: 100%; }
  .arch4-cross { grid-template-columns: 1fr; }
  .platform-cap-wrap { padding: 72px 32px; }
  .cap-detail-body { grid-template-columns: 1fr; }
  .security-grid { grid-template-columns: 1fr; }
  .solution-grid { grid-template-columns: 1fr; }
  .sol-tabs { display: flex; overflow-x: auto; }
  .sol-tab-btn { min-width: 180px; }
  .sol-verify-grid,
  .sol-dim-grid { grid-template-columns: 1fr 1fr; }
  .sol-cross-box h2 { font-size: clamp(40px, 7vw, 56px); }
  .sol-cross-quote { font-size: 18px; }
  .sol-formula-bar {
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px;
    font-size: clamp(18px, 3vw, 22px);
    padding: 16px 22px;
  }
  .case-body { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root { --section-padding: 64px 16px; }
  .nav-inner { padding: 0 16px; }
  .nav-links { display: none; }
  .persona-switcher { display: none; }
  .nav-mobile-toggle { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height);
    left: 0; right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px 24px;
    gap: 16px;
  }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .arch4-wrap { padding: 64px 16px; }
  .arch4-title { font-size: 32px; }
  .arch4-row { flex-wrap: wrap; align-items: flex-start; }
  .arch4-name { width: 100%; }
  .arch4-desc { width: 100%; }
  .platform-cap-wrap { padding: 64px 16px; }
  .platform-cap-title { font-size: 32px; }
  .hero h1 { font-size: 32px; }
  .sol-tabs-section { padding: 0 16px 64px; }
  .sol-panel-card,
  .sol-plan-card { padding: 18px 14px; }
  .sol-panel-head { flex-direction: column; }
  .sol-head-actions,
  .sol-actions { width: 100%; }
  .sol-head-actions .btn,
  .sol-actions .btn { justify-content: center; flex: 1; }
  .sol-pain-grid,
  .sol-verify-grid,
  .sol-dim-grid,
  .sol-plan-grid { grid-template-columns: 1fr; }
  .sol-cross-section { padding: 0 16px 64px; }
  .sol-cross-box {
    border-radius: 22px;
    padding: 56px 14px;
  }
  .sol-cross-quote {
    font-size: 16px;
    margin-bottom: 28px;
  }
  .sol-formula-bar {
    border-radius: 14px;
    font-size: 16px;
    gap: 10px;
    padding: 12px 14px;
  }
  .solutions-cta {
    padding: 64px 16px 72px;
  }
  .solutions-cta .container {
    padding: 0 16px;
  }
  .solutions-cta p {
    font-size: 15px;
    margin-bottom: 24px;
  }
  .solutions-cta .cta-actions {
    gap: 10px;
  }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .footer-links { gap: 12px; }
  .tab-nav { flex-wrap: nowrap; -webkit-overflow-scrolling: touch; }
  .steps-row { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
}

/* --- Utilities --- */
.text-blue { color: var(--blue); }
.text-cyan { color: var(--cyan); }
.text-muted { color: var(--text-secondary); }
.text-center { text-align: center; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-40 { margin-top: 40px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-40 { margin-bottom: 40px; }

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
  padding: 6px 0;
}
.check-list li::before { content: '✓'; color: var(--green); font-weight: 700; flex-shrink: 0; }

.dot-list li {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 4px 0 4px 16px;
  position: relative;
}
.dot-list li::before { content: '•'; position: absolute; left: 0; color: var(--blue); }

.divider { height: 1px; background: var(--border); margin: 40px 0; }

.highlight-box {
  background: rgba(79,110,247,0.06);
  border: 1px solid rgba(79,110,247,0.2);
  border-radius: var(--radius-md);
  padding: 20px 24px;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }