/* ============================================================
   南驰 SAGE 引导页 — 样式表 (P1)
   对齐 sage-email / sage-claw 设计系统
   ============================================================ */

/* ── CSS 变量 & 基础重置 ── */
:root {
  --c-primary-start: #06b6d4;
  --c-primary-end: #1d4ed8;
  --c-primary: #0ea5e9;

  --c-bg-deep: #0a0a1a;
  --c-bg-section: #0f0f23;
  --c-bg-section-alt: #111128;
  --c-bg-card: rgba(255, 255, 255, 0.04);
  --c-bg-card-hover: rgba(255, 255, 255, 0.08);

  --c-text: #e0e0ff;
  --c-text-dim: rgba(255, 255, 255, 0.55);
  --c-text-muted: rgba(255, 255, 255, 0.35);

  --c-green: #10b981;
  --c-gold: #f5af19;
  --c-red: #ef4444;

  --max-w: 1100px;
  --radius: 16px;
  --radius-sm: 10px;

  --ff: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--ff);
  background: var(--c-bg-deep);
  color: var(--c-text);
  line-height: 1.7;
  overflow-x: hidden;
  word-break: normal;
  overflow-wrap: break-word;
}

h1, h2, h3, h4, h5, h6, .section-title {
  text-wrap: balance;
}

a {
  color: var(--c-primary);
  text-decoration: none;
  transition: color 0.2s;
}
a:hover {
  color: var(--c-primary-end);
}

/* ── SVG 图标 ── */
.icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  vertical-align: -0.125em;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

.icon-lg {
  width: 2rem;
  height: 2rem;
}

.icon-xl {
  width: 2.5rem;
  height: 2.5rem;
}

/* ── 顶部导航 ── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 26, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background 0.3s ease, border-color 0.3s ease;
}

.site-header.scrolled {
  background: rgba(10, 10, 26, 0.92);
  border-bottom-color: rgba(255, 255, 255, 0.1);
}

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--c-text);
  flex-shrink: 0;
}

.header-logo {
  height: 28px;
  width: 28px;
  object-fit: cover;
  border-radius: 6px;
}

.header-brand-text {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

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

.header-nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--c-text-dim);
  text-decoration: none;
  transition: color 0.2s;
  position: relative;
}

.header-nav-link:hover {
  color: var(--c-text);
}

.header-nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(135deg, var(--c-primary-start), var(--c-primary-end));
  border-radius: 1px;
  transition: width 0.25s ease;
}

.header-nav-link:hover::after {
  width: 100%;
}

.header-cta.btn.btn-primary {
  padding: 8px 20px;
  font-size: 0.85rem;
  border-radius: 8px;
}

/* 汉堡按钮 — 桌面端隐藏 */
.header-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  flex-direction: column;
  gap: 5px;
  z-index: 110;
}

.header-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--c-text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.header-hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.header-hamburger.open span:nth-child(2) {
  opacity: 0;
}

.header-hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

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

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

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

.section-title {
  font-size: 2.4rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.section-subtitle {
  text-align: center;
  color: var(--c-text-dim);
  font-size: 1.1rem;
  margin-bottom: 56px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--c-primary-start), var(--c-primary-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── 动画基础 ── */
[data-animate] {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── 按钮 ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--c-primary-start), var(--c-primary-end));
  color: #fff;
  box-shadow: 0 4px 24px rgba(102, 126, 234, 0.35);
}

.btn-primary:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 40px rgba(102, 126, 234, 0.5);
}

.btn-ghost {
  background: transparent;
  color: var(--c-text);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-ghost:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
  background: rgba(102, 126, 234, 0.08);
}

/* ============================================================
   Section 1: Hero
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: radial-gradient(ellipse at 50% 0%, rgba(102, 126, 234, 0.18) 0%, transparent 60%),
              var(--c-bg-deep);
}

.hero-glow {
  position: absolute;
  width: 700px;
  height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(118, 75, 162, 0.25), transparent 70%);
  top: -250px;
  left: 50%;
  transform: translateX(-50%);
  filter: blur(80px);
  pointer-events: none;
  animation: glow-pulse 6s ease-in-out infinite;
}

@keyframes glow-pulse {
  0%, 100% { opacity: 0.6; transform: translateX(-50%) scale(1); }
  50% { opacity: 1; transform: translateX(-50%) scale(1.15); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero-eyebrow {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 50px;
  background: rgba(102, 126, 234, 0.12);
  border: 1px solid rgba(102, 126, 234, 0.2);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--c-primary);
  margin-bottom: 28px;
  letter-spacing: 0.03em;
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.25;
  margin-bottom: 20px;
}

.hero-title-accent {
  color: var(--c-gold);
}

.hero-sage-full {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--c-text-dim);
  margin-bottom: 40px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--c-text-muted);
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ============================================================
   Section 2: Pain Points (Before/After)
   ============================================================ */
.contrast-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0;
  align-items: stretch;
  max-width: 900px;
  margin: 0 auto;
}

.contrast-col {
  padding: 36px 28px;
  border-radius: var(--radius);
}

.contrast-old {
  background: var(--c-bg-card);
  border: 1px solid rgba(239, 68, 68, 0.12);
}

.contrast-new {
  background: rgba(16, 185, 129, 0.04);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.contrast-label {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.contrast-label-bad { color: var(--c-red); }
.contrast-label-good { color: var(--c-green); }

.contrast-item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.contrast-item:last-child { border-bottom: none; }

.contrast-emoji {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contrast-text {
  flex: 1;
}

.contrast-task {
  color: var(--c-text-dim);
  font-size: 0.95rem;
}

.contrast-time {
  font-size: 1.3rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.contrast-time-bad { color: var(--c-red); }
.contrast-time-good { color: var(--c-green); }

.contrast-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--c-text-muted);
  padding: 0 16px;
}

.contrast-summary {
  text-align: center;
  padding: 28px 24px;
  margin-top: 32px;
  background: rgba(16, 185, 129, 0.06);
  border: 1px solid rgba(16, 185, 129, 0.15);
  border-radius: var(--radius);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.contrast-summary-check {
  font-size: 1.3rem;
  color: var(--c-green);
  font-weight: 800;
}

.contrast-summary-text {
  color: var(--c-text-dim);
  font-size: 0.95rem;
  margin-top: 8px;
}

/* ============================================================
   Section 3: How It Works (Steps)
   ============================================================ */
.steps-timeline {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  margin-bottom: 32px;
}

.step-card {
  flex: 1;
  max-width: 240px;
  text-align: center;
  padding: 32px 16px;
  position: relative;
}

.step-number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-primary-start), var(--c-primary-end));
  color: #fff;
  font-size: 1.4rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  box-shadow: 0 4px 24px rgba(102, 126, 234, 0.3);
}

.step-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.step-content h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.step-content p {
  color: var(--c-text-dim);
  font-size: 0.9rem;
  line-height: 1.6;
}

.step-connector {
  width: 48px;
  height: 2px;
  background: linear-gradient(to right, var(--c-primary-start), var(--c-primary-end));
  margin-top: 60px;
  opacity: 0.4;
  flex-shrink: 0;
}

.steps-footnote {
  text-align: center;
  color: var(--c-text-muted);
  font-size: 0.9rem;
  padding: 20px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  max-width: 700px;
  margin: 0 auto;
}

/* ============================================================
   Section 4: Evidence Cards (Three Tiers)
   ============================================================ */
.evidence-tier {
  margin-bottom: 48px;
  position: relative;
}

.evidence-tier:last-child { margin-bottom: 0; }

.tier-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 700;
}

.tier-header-fact { background: rgba(148, 163, 184, 0.08); border-left: 4px solid #94a3b8; color: #94a3b8; }
.tier-header-recon { background: rgba(16, 185, 129, 0.08); border-left: 4px solid var(--c-green); color: var(--c-green); }
.tier-header-judge { background: rgba(167, 139, 250, 0.08); border-left: 4px solid #a78bfa; color: #a78bfa; }

.tier-desc {
  color: var(--c-text-dim);
  font-weight: 400;
  font-size: 0.9rem;
  margin-left: 8px;
}

.tier-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.evidence-card {
  background: var(--c-bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  padding: 24px 20px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.evidence-card:hover {
  background: var(--c-bg-card-hover);
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.12);
}

.evidence-card-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  font-size: 0.8rem;
  padding: 2px 8px;
  border-radius: 6px;
  font-weight: 600;
}

.badge-fact { background: rgba(148, 163, 184, 0.15); color: #94a3b8; }
.badge-recon { background: rgba(16, 185, 129, 0.15); color: var(--c-green); }
.badge-judge { background: rgba(167, 139, 250, 0.15); color: #a78bfa; }

.evidence-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.evidence-card-fields {
  list-style: none;
  margin-bottom: 16px;
}

.evidence-card-fields li {
  color: var(--c-text-dim);
  font-size: 0.85rem;
  padding: 3px 0;
}

.evidence-card-fields li::before {
  content: '·';
  margin-right: 6px;
  color: var(--c-text-muted);
}

.evidence-card-source {
  font-size: 0.8rem;
  color: var(--c-text-muted);
  padding-top: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}

.tier-flow-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px 0;
  color: var(--c-text-muted);
  font-size: 1.1rem;
  gap: 8px;
}

.tier-flow-arrow span {
  font-size: 0.85rem;
  color: var(--c-text-dim);
}

.tier-extra {
  text-align: center;
  font-size: 0.85rem;
  color: var(--c-text-muted);
  margin-top: 12px;
  padding: 8px 16px;
  background: rgba(148, 163, 184, 0.04);
  border-radius: var(--radius-sm);
}

/* ============================================================
   Section 5: SAGE Ecosystem (Hub & Spoke)
   ============================================================ */
.ecosystem-layout {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin: 0 auto;
  max-width: 900px;
}

.eco-spoke {
  flex: 0 0 200px;
  text-align: center;
}

.eco-spoke-card {
  background: var(--c-bg-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 28px 16px;
  transition: all 0.3s;
}

.eco-spoke-card:hover {
  background: var(--c-bg-card-hover);
  border-color: var(--c-primary);
}

.eco-spoke-icon {
  font-size: 2.4rem;
  margin-bottom: 12px;
}

.eco-spoke-name {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.eco-spoke-desc {
  font-size: 0.82rem;
  color: var(--c-text-dim);
  line-height: 1.5;
}

.eco-spoke-cta {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.82rem;
  color: var(--c-primary);
  font-weight: 600;
}

.eco-arrow {
  flex: 0 0 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  color: var(--c-text-muted);
  font-size: 0.75rem;
}

.eco-arrow-line {
  width: 60px;
  height: 2px;
  background: linear-gradient(to right, var(--c-primary-start), var(--c-primary-end));
  position: relative;
  opacity: 0.5;
}

.eco-arrow-line::after {
  content: '▶';
  position: absolute;
  right: -10px;
  top: -8px;
  font-size: 0.7rem;
  color: var(--c-primary);
}

.eco-arrow-reverse .eco-arrow-line::after {
  content: '◀';
  left: -10px;
  right: auto;
}

.eco-hub {
  flex: 0 0 280px;
  text-align: center;
}

.eco-hub-card {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.08), rgba(118, 75, 162, 0.08));
  border: 2px solid rgba(102, 126, 234, 0.3);
  border-radius: var(--radius);
  padding: 36px 20px;
  position: relative;
  animation: hub-glow 4s ease-in-out infinite;
}

@keyframes hub-glow {
  0%, 100% { box-shadow: 0 0 30px rgba(102, 126, 234, 0.1); }
  50% { box-shadow: 0 0 60px rgba(102, 126, 234, 0.25); }
}

.eco-hub-icon {
  font-size: 3rem;
  margin-bottom: 12px;
}

.eco-hub-name {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.eco-hub-desc {
  font-size: 0.9rem;
  color: var(--c-text-dim);
  line-height: 1.6;
  margin-bottom: 12px;
}

.eco-hub-badge {
  display: inline-block;
  padding: 4px 14px;
  background: linear-gradient(135deg, var(--c-primary-start), var(--c-primary-end));
  color: #fff;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
}

.ecosystem-footnote {
  text-align: center;
  margin-top: 40px;
  font-size: 0.9rem;
  color: var(--c-text-muted);
}

/* ============================================================
   Section 6: Extended Capabilities (Grid)
   ============================================================ */
.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
}

.cap-card {
  background: var(--c-bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: all 0.3s;
}

.cap-card:hover {
  background: var(--c-bg-card-hover);
  transform: translateY(-2px);
  border-color: rgba(102, 126, 234, 0.2);
}

.cap-icon {
  font-size: 2rem;
  margin-bottom: 14px;
}

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

.cap-card p {
  color: var(--c-text-dim);
  font-size: 0.85rem;
  line-height: 1.6;
}

/* ============================================================
   Section 7: Stats / Data Speaks
   ============================================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.stat-item {
  text-align: center;
  padding: 32px 16px;
  background: var(--c-bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  transition: all 0.3s;
}

.stat-item:hover {
  border-color: var(--c-primary);
  background: var(--c-bg-card-hover);
}

.stat-number {
  font-size: 2.8rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  margin-bottom: 8px;
}

.stat-suffix {
  font-size: 1.2rem;
  font-weight: 600;
}

.stat-label {
  color: var(--c-text-dim);
  font-size: 0.9rem;
  margin-top: 4px;
}

/* ============================================================
   Section 8: CTA + Footer
   ============================================================ */
.cta-section {
  padding: 100px 0 60px;
  text-align: center;
  background: radial-gradient(ellipse at 50% 100%, rgba(102, 126, 234, 0.1) 0%, transparent 60%),
              var(--c-bg-deep);
}

.cta-title {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.cta-subtitle {
  color: var(--c-text-dim);
  font-size: 1.05rem;
  margin-bottom: 40px;
}

.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Footer */
.footer {
  padding: 40px 0;
  background: var(--c-bg-deep);
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}

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

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--c-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}

.footer-links a {
  color: var(--c-text-dim);
  font-size: 0.9rem;
  transition: color 0.2s;
}

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

.footer-meta {
  color: var(--c-text-muted);
  font-size: 0.85rem;
  text-align: right;
}

.footer-sep {
  margin: 0 8px;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 768px) {
  /* ── Header 移动端 ── */
  .header-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 10, 26, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 16px 24px 20px;
    gap: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

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

  .header-nav-link {
    font-size: 1rem;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  .header-nav-link:last-child {
    border-bottom: none;
  }

  .header-nav-link::after {
    display: none;
  }

  .header-cta {
    display: none;
  }

  .header-hamburger {
    display: flex;
  }

  .header-brand-text {
    font-size: 0.9rem;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .section {
    padding: 64px 0;
  }

  .section-title {
    font-size: 1.8rem;
  }

  /* Pain points */
  .contrast-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .contrast-arrow {
    transform: rotate(90deg);
    padding: 8px 0;
    justify-self: center;
  }

  /* Steps */
  .steps-timeline {
    flex-direction: column;
    align-items: center;
  }

  .step-connector {
    width: 2px;
    height: 32px;
    margin: 0;
  }

  .step-card {
    max-width: 100%;
  }

  /* Evidence cards */
  .tier-cards {
    grid-template-columns: 1fr;
  }

  /* Ecosystem */
  .ecosystem-layout {
    flex-direction: column;
    gap: 16px;
  }

  .eco-arrow { display: none; }
  .eco-hub, .eco-spoke, .ecosystem-layout > div { 
    flex: none; 
    width: 100%; 
    max-width: 100% !important; 
    order: 0 !important; 
  }

  /* Hub Dashboard */
  .hub-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .hub-row > div:last-child {
    text-align: left !important;
  }

  /* Capabilities */
  .capabilities-grid {
    grid-template-columns: 1fr 1fr;
  }

  /* Stats */
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }

  /* Footer */
  .footer-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-brand {
    align-items: center !important;
    text-align: center;
  }

  .footer-meta {
    flex-direction: column;
    text-align: center !important;
  }

  /* CTA */
  .cta-title {
    font-size: 1.6rem;
  }

  .btn {
    padding: 12px 24px;
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.8rem;
  }

  .hero-eyebrow {
    font-size: 0.75rem;
  }
}

/* ============================================================
   New SaaS Component Styles (Replacing AI-flavored inline styles)
   ============================================================ */

/* Knowledge Base Demo (Sleek Panel instead of Chat Bubbles) */
.kb-demo {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-top: 48px;
}
.kb-query-panel {
  flex: 1;
  min-width: 320px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
  overflow: hidden;
}
.kb-query-panel::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(6, 182, 212, 0.3), transparent);
}
.kb-query-input {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.04);
  padding: 16px;
  border-radius: var(--radius-sm);
  color: var(--c-text-dim);
  font-size: 0.95rem;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.kb-query-result {
  background: rgba(6, 182, 212, 0.05);
  border-left: 2px solid var(--c-primary-start);
  padding: 16px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.9rem;
  line-height: 1.6;
}

.kb-benefits {
  flex: 1;
  min-width: 320px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Leads Dashboard */
.hub-dashboard {
  background: var(--c-bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 40px;
}
.hub-header {
  padding: 16px 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  display: flex;
  justify-content: space-between;
  background: rgba(0, 0, 0, 0.15);
  font-size: 0.85rem;
  color: var(--c-text-muted);
}
.hub-row {
  padding: 20px 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.2s;
}
.hub-row:hover {
  background: rgba(255, 255, 255, 0.02);
}
.hub-row:last-child {
  border-bottom: none;
}
.hub-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(16, 185, 129, 0.1);
  color: var(--c-green);
}
.hub-status.warning {
  background: rgba(245, 175, 25, 0.1);
  color: var(--c-gold);
}

/* Pricing Grid */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
  max-width: 860px;
  margin: 48px auto 0;
}
.pricing-card {
  background: var(--c-bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  padding: 40px 32px;
  position: relative;
  transition: transform 0.3s, border-color 0.3s;
  display: flex;
  flex-direction: column;
}
.pricing-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.15);
}
.pricing-card.premium {
  background: linear-gradient(180deg, rgba(6, 182, 212, 0.03) 0%, transparent 100%);
  border: 1px solid rgba(6, 182, 212, 0.3);
}
.pricing-card.premium::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-primary-start), transparent);
}
.pricing-features {
  list-style: none;
  margin: 32px 0;
  flex-grow: 1;
}
.pricing-features li {
  margin-bottom: 16px;
  font-size: 0.95rem;
  color: var(--c-text-dim);
  display: flex;
  align-items: center;
  gap: 12px;
}
.pricing-features li.no {
  text-decoration: line-through;
  opacity: 0.4;
}

/* Trust Badges */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-top: 40px;
}
.trust-badge {
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.04);
  transition: background 0.3s;
}
.trust-badge:hover {
  background: rgba(255, 255, 255, 0.04);
}
.trust-badge-icon {
  color: var(--c-primary);
  margin-bottom: 16px;
}

/* Contact Modal */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}
.modal-content {
  background: var(--c-bg-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 40px;
  width: 90%;
  max-width: 440px;
  position: relative;
  transform: translateY(20px);
  transition: transform 0.3s;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}
.modal-overlay.active .modal-content {
  transform: translateY(0);
}
.modal-close {
  position: absolute;
  top: 20px; right: 20px;
  background: transparent;
  border: none;
  color: var(--c-text-muted);
  cursor: pointer;
  padding: 4px;
  display: flex;
}
.modal-close:hover {
  color: var(--c-text);
}
.modal-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.form-group label {
  font-size: 0.85rem;
  color: var(--c-text-dim);
  font-weight: 500;
}
.form-group input, .form-group textarea {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--c-text);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 0.2s;
}
.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--c-primary);
}