/* ============================================
   叩索AI 企业官网 — Design System v3
   Swiss Modernism 2.0 + Bento Grid
   ============================================ */

:root {
  /* Color Tokens */
  --c-primary: #1677FF;
  --c-primary-hover: #125FCC;
  --c-secondary: #0F766E;
  --c-secondary-hover: #0C5E58;
  --c-heading: #0A1628;
  --c-body: #475569;
  --c-muted: #94A3B8;
  --c-border: #E2E8F0;
  --c-bg: #FFFFFF;
  --c-bg-alt: #F8FAFC;
  --c-nav-glass: rgba(255,255,255,0.92);

  /* Typography */
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

  /* Spacing — 4px baseline */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 20px;
  --sp-6: 24px;
  --sp-8: 32px;
  --sp-10: 40px;
  --sp-12: 48px;
  --sp-16: 64px;
  --sp-20: 80px;
  --sp-24: 96px;

  /* Radii */
  --r: 2px;
  --r-pill: 9999px;

  /* Shadows */
  --shadow-card: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.03);
  --shadow-card-hover: 0 4px 20px rgba(0,0,0,0.06), 0 1px 3px rgba(0,0,0,0.04);
  --shadow-nav: 0 1px 0 rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.08);

  /* Layout */
  --w-container: 1200px;
  --w-narrow: 900px;
  --w-sidebar: 280px;

  /* Z-index */
  --z-nav: 1000;
  --z-menu: 900;
  --z-overlay: 800;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--c-body);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
video { max-width: 100%; display: block; }
a { color: var(--c-primary); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--c-primary-hover); }
::selection { background: rgba(22,119,255,0.15); color: var(--c-heading); }
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--c-muted); border-radius: var(--r-pill); }

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  color: var(--c-heading);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.2rem, 4vw, 3.2rem); font-weight: 800; letter-spacing: -0.03em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: 1.15rem; }
h4 { font-size: 1.05rem; }
p + p { margin-top: var(--sp-4); }

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

/* ===== Layout Containers ===== */
.container {
  width: 100%;
  max-width: var(--w-container);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--sp-8);
  padding-right: var(--sp-8);
}

.container-narrow {
  width: 100%;
  max-width: var(--w-narrow);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--sp-6);
  padding-right: var(--sp-6);
}

.section {
  padding: var(--sp-24) 0;
}

.section-sm { padding: var(--sp-16) 0; }
.section-lg { padding: var(--sp-20) 0 var(--sp-24); }

/* ===== Section Header ===== */
.section-header {
  text-align: center;
  margin-bottom: var(--sp-12);
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--c-primary);
  letter-spacing: 0.04em;
  margin-bottom: var(--sp-4);
}

.section-title {
  margin-bottom: var(--sp-4);
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--c-muted);
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== Page Banner ===== */
.page-banner {
  padding: var(--sp-24) 0 var(--sp-16);
  text-align: center;
  background: var(--c-bg);
}

.page-banner .section-subtitle {
  margin-top: var(--sp-4);
}

/* ===== Navigation ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: var(--z-nav);
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--sp-8);
  background: var(--c-nav-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--c-border);
  transition: box-shadow 0.3s ease;
}

.navbar.scrolled {
  box-shadow: var(--shadow-nav);
}

.nav-brand {
  display: flex;
  align-items: center;
}

.nav-brand img {
  height: 35px;
  width: 150px;
  object-fit: contain;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  list-style: none;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--c-muted);
  border-radius: var(--r);
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--c-primary);
  background: rgba(22,119,255,0.05);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 9px 22px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
  background: var(--c-primary);
  border-radius: var(--r);
  transition: background 0.2s ease, transform 0.2s ease;
}

.nav-cta:hover {
  background: var(--c-primary-hover);
  color: #fff;
  transform: translateY(-1px);
}

/* Hamburger — hidden on desktop */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
  z-index: calc(var(--z-nav) + 1);
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--c-heading);
  border-radius: var(--r-pill);
  transition: transform 0.25s ease, opacity 0.15s ease;
}

.nav-hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.active span:nth-child(2) { opacity: 0; }
.nav-hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Menu Panel */
.mobile-menu {
  display: none;
  position: fixed;
  top: 68px; left: 0; right: 0; bottom: 0;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: var(--sp-8);
  z-index: var(--z-menu);
  flex-direction: column;
  gap: var(--sp-1);
  overflow-y: auto;
}

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

.mobile-menu a {
  display: block;
  padding: 14px 12px;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--c-body);
  border-radius: var(--r);
  transition: color 0.15s ease, background 0.15s ease;
}

.mobile-menu a:hover,
.mobile-menu a.active {
  color: var(--c-primary);
  background: rgba(22,119,255,0.05);
}

.mobile-menu .btn-primary {
  margin-top: var(--sp-4);
  text-align: center;
}

/* Main content offset for fixed nav */
.main-content {
  margin-top: 68px;
}

/* ===== Hero Section ===== */
.hero {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  min-height: 520px;
  padding: var(--sp-20) var(--sp-8) var(--sp-16);
  overflow: hidden;
  background: #fff;
}

.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--w-container);
  padding-top: var(--sp-8);
}

.hero-content {
  max-width: 640px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 6px 16px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--c-primary);
  background: rgba(22,119,255,0.06);
  border: 1px solid rgba(22,119,255,0.15);
  border-radius: var(--r-pill);
  margin-bottom: var(--sp-6);
}

.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--c-primary);
  border-radius: 50%;
}

.hero-title {
  margin-bottom: var(--sp-5);
}

.hero-subtitle {
  font-size: 1.12rem;
  color: var(--c-muted);
  line-height: 1.7;
  max-width: 540px;
  margin-bottom: var(--sp-8);
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}

/* ===== Scroll Indicator ===== */
.scroll-hint {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.scroll-hint a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-muted);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: 12px 28px;
  font-family: var(--font);
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.4;
  border: 2px solid transparent;
  border-radius: var(--r);
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  touch-action: manipulation;
}

.btn:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
}

.btn-primary:hover {
  background: var(--c-primary-hover);
  border-color: var(--c-primary-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(22,119,255,0.25);
}

.btn-outline {
  background: transparent;
  color: var(--c-heading);
  border-color: var(--c-border);
}

.btn-outline:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
  background: rgba(22,119,255,0.03);
}

.btn-lg {
  padding: 14px 34px;
  font-size: 0.96rem;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.83rem;
}

/* ===== Cards ===== */
.card {
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--r);
  padding: var(--sp-8);
  box-shadow: var(--shadow-card);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  border-color: #CBD5E1;
  box-shadow: var(--shadow-card-hover);
}

.card-tp {
  text-align: center;
}

.card-tp-img {
  width: 120px;
  height: 120px;
  object-fit: contain;
  margin-bottom: var(--sp-5);
  margin-left: auto;
  margin-right: auto;
}

.card-lr {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-5);
}

.card-lr-img {
  width: 88px;
  height: 88px;
  object-fit: contain;
  flex-shrink: 0;
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--r);
  background: linear-gradient(135deg, rgba(22,119,255,0.08), rgba(15,118,110,0.08));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-primary);
  flex-shrink: 0;
}

.card h3 { margin-bottom: var(--sp-2); }
.card h4 { margin-bottom: var(--sp-2); }
.card p { font-size: 0.92rem; color: var(--c-muted); line-height: 1.65; }

/* ===== Grid Systems ===== */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-8);
  align-items: center;
}

.grid-2-wide {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: var(--sp-12);
  align-items: center;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-6);
}

/* Bento Grid — asymmetric service showcase */
.bento-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: var(--sp-6);
}

.bento-stack {
  display: flex;
  flex-direction: column;
  gap: var(--sp-6);
}

/* Stats Grid — 4 horizontal metrics */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-8);
}

/* Advantages Grid — 2x2 */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-6);
}

/* Team / Culture auto-fit grids */
.auto-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--sp-6);
}

.auto-grid-sm {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--sp-5);
}

/* Metrics mini-grid (solutions page) */
.metrics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

/* Form row */
.form-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
}

/* ===== Feature Tags ===== */
.feat-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-bottom: var(--sp-6);
}

.feat-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: 0.8rem;
  font-weight: 500;
  border-radius: var(--r-pill);
  border: 1px solid;
}

.feat-tag-primary {
  background: rgba(22,119,255,0.05);
  border-color: rgba(22,119,255,0.14);
  color: var(--c-primary);
}

.feat-tag-secondary {
  background: rgba(15,118,110,0.06);
  border-color: rgba(15,118,110,0.16);
  color: var(--c-secondary);
}

/* ===== Feature List ===== */
.feat-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  margin-bottom: var(--sp-6);
}

.feat-item {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-size: 0.91rem;
  color: var(--c-body);
}

.feat-item iconify-icon {
  color: var(--c-primary);
  flex-shrink: 0;
}

/* ===== Service Overview Card ===== */
.svc-overview {
  padding: var(--sp-8);
}

.svc-overview h4 {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin-bottom: var(--sp-4);
  font-size: 1.05rem;
}

.svc-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 14px 0;
  border-bottom: 1px solid var(--c-border);
}

.svc-row:last-child { border-bottom: none; }

.svc-label {
  font-weight: 600;
  color: var(--c-heading);
  font-size: 0.93rem;
  margin-bottom: var(--sp-1);
}

.svc-value {
  color: var(--c-muted);
  font-size: 0.85rem;
}

/* ===== Steps ===== */
.steps {
  counter-reset: step;
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
}

.step {
  display: flex;
  gap: var(--sp-4);
  align-items: flex-start;
}

.step-num {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.step-body h4 {
  margin-bottom: var(--sp-1);
  font-size: 0.95rem;
}

.step-body p {
  font-size: 0.86rem;
  color: var(--c-muted);
}

/* ===== Contact Info ===== */
.contact-item {
  display: flex;
  gap: var(--sp-4);
  align-items: flex-start;
  margin-bottom: var(--sp-5);
}

.contact-item iconify-icon {
  color: var(--c-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-label {
  font-weight: 600;
  color: var(--c-heading);
  margin-bottom: 3px;
  font-size: 0.95rem;
}

.contact-value {
  color: var(--c-muted);
  font-size: 0.92rem;
}

/* ===== Forms ===== */
.form-group {
  margin-bottom: var(--sp-5);
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--c-heading);
  margin-bottom: var(--sp-2);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font);
  font-size: 0.92rem;
  color: var(--c-heading);
  background: var(--c-bg);
  border: 1.5px solid var(--c-border);
  border-radius: var(--r);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  -webkit-appearance: none;
  appearance: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(22,119,255,0.1);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath stroke='%2394A3B8' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3E%3C/svg%3E");
  background-position: right 14px center;
  background-repeat: no-repeat;
  background-size: 18px;
  padding-right: 42px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--c-heading);
  color: rgba(255,255,255,0.7);
  padding: var(--sp-16) 0 var(--sp-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--sp-12);
  margin-bottom: var(--sp-12);
}

.footer-brand p {
  margin-top: var(--sp-3);
  font-size: 0.88rem;
  color: rgba(255,255,255,0.5);
}

.footer-col h4 {
  color: #fff;
  font-size: 0.9rem;
  margin-bottom: var(--sp-4);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.footer-col a {
  display: block;
  color: rgba(255,255,255,0.6);
  font-size: 0.88rem;
  padding: 6px 0;
  transition: color 0.15s ease;
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--sp-3);
  padding-top: var(--sp-8);
  border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-bottom p {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
}

.footer-bottom-links {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}

.footer-bottom-links a {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
}

.footer-bottom-links a:hover {
  color: rgba(255,255,255,0.8);
}

/* ===== Data Metrics (Stats Block) ===== */
.stat-value {
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 800;
  color: var(--c-primary);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: var(--sp-1);
}

.stat-label {
  font-size: 0.9rem;
  color: var(--c-muted);
}

/* ===== Mission Card ===== */
.mission-icon {
  width: 80px;
  height: 80px;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(22,119,255,0.1), rgba(15,118,110,0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--sp-6);
  color: var(--c-primary);
  font-size: 2rem;
}

.mission-metrics {
  display: flex;
  justify-content: center;
  gap: var(--sp-10);
  margin-top: var(--sp-8);
  padding-top: var(--sp-6);
  border-top: 1px solid var(--c-border);
}

/* ===== Divider ===== */
.divider {
  border: none;
  border-top: 1px solid var(--c-border);
  margin: var(--sp-8) 0;
}

/* ============================================
   Responsive — Mobile-First Overrides
   ============================================ */

/* ---- 1024px: Tablet Landscape ---- */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-8);
  }
}

/* ---- 768px: Tablet Portrait ---- */
@media (max-width: 768px) {
  :root {
    --w-container: 100%;
  }

  .container { padding-left: var(--sp-6); padding-right: var(--sp-6); }

  /* Nav */
  .nav-links, .nav-cta { display: none; }
  .nav-hamburger { display: flex; }

  /* Grids — all collapse to single column */
  .grid-2,
  .grid-2-wide,
  .grid-3,
  .bento-grid,
  .stats-grid,
  .adv-grid,
  .auto-grid,
  .auto-grid-sm {
    grid-template-columns: 1fr !important;
  }

  .bento-stack { gap: var(--sp-6); }
  .stats-grid { gap: var(--sp-6); }

  .grid-2-wide .card-lr { flex-direction: column; }

  .section { padding: var(--sp-16) 0; }
  .section-header { margin-bottom: var(--sp-10); }

  /* Hero */
  .hero {
    min-height: auto;
    padding: var(--sp-12) var(--sp-6) var(--sp-10);
  }

  .hero-title { font-size: clamp(1.7rem, 6vw, 2.2rem); }
  .hero-subtitle { font-size: 1rem; }
  .hero-actions { flex-wrap: wrap; }

  .scroll-hint { display: none; }

  /* Cards */
  .card { padding: var(--sp-6); }
  .card-tp-img { width: 100px; height: 100px; }
  .card-lr { flex-direction: column; gap: var(--sp-4); }
  .card-lr-img { width: 72px; height: 72px; }
  .card-icon { width: 48px; height: 48px; }

  /* Page banner */
  .page-banner { padding: var(--sp-16) var(--sp-6) var(--sp-12); }

  /* Footer */
  .footer-grid { grid-template-columns: 1fr; gap: var(--sp-8); }
  .footer-bottom { flex-direction: column; gap: var(--sp-3); text-align: center; }
  .footer-bottom-links { justify-content: center; flex-wrap: wrap; }

  /* Misc */
  .mission-metrics { gap: var(--sp-8); }
  .metrics-grid { grid-template-columns: 1fr; }
  .form-row-2 { grid-template-columns: 1fr; }

  .btn-lg { padding: 12px 28px; }
}

/* ---- 480px: Mobile ---- */
@media (max-width: 480px) {
  .container { padding-left: var(--sp-4); padding-right: var(--sp-4); }

  .navbar { padding: 0 var(--sp-4); height: 60px; }
  .main-content { margin-top: 60px; }
  .mobile-menu { top: 60px; }
  .nav-brand img { height: 28px; width: 120px; }

  .hero {
    padding: var(--sp-8) var(--sp-4) var(--sp-8);
  }

  .hero-content { max-width: 100%; }
  .hero-actions { flex-direction: column; width: 100%; }

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

  .section { padding: var(--sp-12) 0; }
  .section-header { margin-bottom: var(--sp-8); }

  .card { padding: var(--sp-5); }
  .card-tp-img { width: 80px; height: 80px; }
  .card-lr-img { width: 60px; height: 60px; }

  .btn { padding: 10px 22px; font-size: 0.88rem; }
  .btn-lg { padding: 12px 24px; font-size: 0.92rem; }

  .page-banner { padding: var(--sp-12) var(--sp-4) var(--sp-8); }

  .stats-grid { gap: var(--sp-5); }
  .stat-value { font-size: 1.8rem; }

  .mission-metrics {
    flex-direction: column;
    gap: var(--sp-5);
    align-items: center;
  }

  .feat-tag { font-size: 0.75rem; padding: 4px 10px; }

  .footer-grid { gap: var(--sp-6); }
  .site-footer { padding: var(--sp-12) 0 var(--sp-6); }
}

/* ============================================
   Motion & Accessibility
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 2px;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  padding: var(--sp-3) var(--sp-5);
  background: var(--c-primary);
  color: #fff;
  font-weight: 600;
  z-index: 9999;
}

.skip-link:focus {
  top: 0;
  left: 0;
}

/* Utility */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.text-center { text-align: center; }
.mt-4 { margin-top: var(--sp-4); }
.mt-6 { margin-top: var(--sp-6); }
.mt-8 { margin-top: var(--sp-8); }
.mb-4 { margin-bottom: var(--sp-4); }
.mb-6 { margin-bottom: var(--sp-6); }
.mb-8 { margin-bottom: var(--sp-8); }