/* ============================================================
   弗劳恩科技官网 · 企业级样式表
   Brand: Primary #182CA8 / Gold #FC9800 / Dark #242424
   ============================================================ */

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

:root {
  --primary: #182CA7;
  --primary-light: #2A42B8;
  --primary-dark: #0F1E7A;
  --accent: #182CA7;
  --accent-light: #2A42B8;
  --accent-dark: #0F1E7A;
  --gold: #FF8500;
  --gold-light: #FF9522;
  --white: #FFFFFF;
  --bg-light: #F5F7FA;
  --bg-alt: #F0F3F7;
  --border: #E2E8F0;
  --text: #232323;
  --text-secondary: #64748B;
  --text-light: #94A3B8;
  --font: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-w: 1200px;
  --ease: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 1px 3px rgba(24,44,167,0.06);
  --shadow-md: 0 4px 16px rgba(24,44,167,0.08);
  --shadow-lg: 0 8px 32px rgba(24,44,167,0.12);
}

html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  color: var(--text);
  line-height: 1.7;
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
h1,h2,h3,h4,h5 { font-weight: 700; line-height: 1.3; color: var(--primary); }

/* ============ HEADER / NAV ============ */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(24,44,167,0.08);
}
.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 48px;
  height: 72px;
}
.brand {
  flex-shrink: 0;
}
.brand img {
  height: 40px;
  width: auto;
  display: block;
}
.main-nav { display: flex; align-items: center; gap: 2px; margin-left: auto; }
.main-nav a {
  padding: 8px 16px; font-size: 15px; font-weight: 500;
  color: var(--text); border-radius: 6px; transition: all var(--ease);
}
.main-nav a:hover {
  color: var(--primary); background: rgba(24,44,167,0.06);
}
.main-nav a.active {
  color: var(--primary); font-weight: 600;
}
.main-nav .nav-cta {
  background: var(--primary); color: var(--white) !important; margin-left: 8px; font-weight: 600;
  border-radius: 8px;
}
.main-nav .nav-cta:hover { background: var(--primary-dark); }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 8px;
  margin-left: auto;
}
.nav-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--text); border-radius: 2px; transition: all var(--ease);
}

/* ============ PAGE HERO (sub-pages) ============ */
.page-hero {
  padding-top: 72px;
  background: linear-gradient(160deg, var(--primary-dark), var(--primary), var(--primary-light));
  color: var(--white);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size: 60px 60px;
}
.page-hero::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 25% 40%, rgba(26,111,181,0.12) 0%, transparent 55%);
}
.page-hero-inner {
  position: relative; z-index: 1;
  max-width: var(--max-w); margin: 0 auto; padding: 80px 24px 64px;
}
.page-hero-label {
  font-size: 12px; font-weight: 600; letter-spacing: 3px;
  color: var(--gold-light); text-transform: uppercase; margin-bottom: 16px;
}
.page-hero h1 {
  font-size: 40px; font-weight: 900; color: var(--white); margin-bottom: 16px;
}
.page-hero p {
  font-size: 16px; color: rgba(255,255,255,0.65); line-height: 1.8; max-width: 700px;
}

/* ============ HERO (index) ============ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(160deg, var(--primary-dark), var(--primary), var(--primary-light));
}
.hero-bg-image {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-size: cover;
  background-position: center;
  pointer-events: none;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 25% 40%, rgba(24,44,167,0.15) 0%, transparent 55%),
    radial-gradient(ellipse at 75% 60%, rgba(255,133,0,0.08) 0%, transparent 50%);
}
.hero-inner {
  position: relative;
  z-index: 10;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
  text-align: center;
  pointer-events: auto;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 8px 24px; background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,133,0,0.4); border-radius: 50px;
  margin-bottom: 32px; backdrop-filter: blur(8px);
}
.hero-badge span { font-size: 14px; color: rgba(255,255,255,0.9); text-shadow: 0 1px 4px rgba(0,0,0,0.5); }
.badge-dot { width: 4px; height: 4px; background: var(--gold); border-radius: 50%; }
.hero-title {
  font-size: 52px; font-weight: 900; color: var(--white);
  line-height: 1.4; margin-bottom: 28px; letter-spacing: 2px;
  text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}
.hero-title .highlight {
  color: var(--gold);
}
.hero-title .highlight {
  color: var(--gold);
}
.hero-desc-full {
  font-size: 16px; color: rgba(255,255,255,0.85); line-height: 1.9;
  max-width: 680px; margin: 0 auto 36px;
  text-shadow: 0 1px 6px rgba(0,0,0,0.5);
}
.hero-methodology {
  display: flex; align-items: center; justify-content: center;
  gap: 14px; margin-bottom: 44px; flex-wrap: wrap;
}
.method-step {
  display: inline-block; padding: 10px 26px;
  background: rgba(255,255,255,0.15); border: 1px solid rgba(255,255,255,0.25);
  border-radius: 8px; font-size: 16px; font-weight: 600;
  color: var(--white); letter-spacing: 2px;
  text-shadow: 0 1px 4px rgba(0,0,0,0.5);
}
.method-step-gold {
  background: rgba(252,152,0,0.25); border-color: rgba(252,152,0,0.4);
  color: var(--gold-light);
}
.method-arrow { font-size: 14px; color: var(--gold); text-shadow: 0 1px 4px rgba(0,0,0,0.5); }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; margin-bottom: 48px; }

/* Hero entrance animations */
@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero-badge { animation: heroFadeUp 0.8s ease 0.2s both; }
.hero-title { animation: heroFadeUp 0.8s ease 0.4s both; }
.hero-desc-full { animation: heroFadeUp 0.8s ease 0.6s both; }
.hero-methodology { animation: heroFadeUp 0.8s ease 0.8s both; }
.hero-cta { animation: heroFadeUp 0.8s ease 1s both; }
.hero-image-placeholder {
  width: 100%; max-width: 800px; height: 200px;
  background: rgba(255,255,255,0.04); border: 1px dashed rgba(255,255,255,0.15);
  border-radius: 12px; display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.3); font-size: 14px;
}

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; font-size: 15px; font-weight: 600;
  font-family: var(--font); border-radius: 8px; border: 2px solid transparent;
  cursor: pointer; transition: all var(--ease); white-space: nowrap;
}
.btn-primary { background: var(--accent); color: var(--white); border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(24,44,167,0.3); }
.btn-ghost { background: transparent; color: var(--white); border-color: rgba(255,255,255,0.3); }
.btn-ghost:hover { background: var(--white); color: var(--primary); border-color: var(--white); }
.btn-outline { background: transparent; color: var(--accent); border-color: var(--accent); }
.btn-outline:hover { background: var(--accent); color: var(--white); }
.btn-sm { padding: 10px 24px; font-size: 14px; }
.btn-lg { padding: 16px 40px; font-size: 16px; }
.btn-block { width: 100%; justify-content: center; }

/* ============ SECTIONS ============ */
.section { padding: 80px 0; }
.section-dark { background: var(--bg-alt); }
.section-header { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-label {
  display: inline-block; font-size: 12px; font-weight: 600; letter-spacing: 3px;
  color: var(--accent); text-transform: uppercase; margin-bottom: 12px;
  position: relative; padding-bottom: 10px;
}
.section-label::after {
  content: ''; position: absolute; bottom: 0; left: 50%;
  transform: translateX(-50%); width: 32px; height: 3px;
  background: var(--gold); border-radius: 2px;
}
.section-title { font-size: 32px; font-weight: 800; margin-bottom: 14px; }
.section-desc { font-size: 16px; color: var(--text-secondary); line-height: 1.8; }
.section-dark .section-title { color: var(--primary); }

/* ============ DUAL COLUMNS (TWO SIDES) ============ */
.dual-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.dual-col {
  padding: 36px 32px; border-radius: 16px;
  border: 1px solid var(--border); background: var(--white);
  transition: all var(--ease);
}
.dual-col:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.dual-tag {
  display: inline-block; font-size: 11px; font-weight: 600; letter-spacing: 2px;
  color: var(--accent); text-transform: uppercase; margin-bottom: 10px;
}
.dual-col h3 { font-size: 22px; font-weight: 700; margin-bottom: 12px; }
.dual-col > p { font-size: 14px; color: var(--text-secondary); margin-bottom: 20px; line-height: 1.7; }

/* ============ NUMBERED LIST ============ */
.num-list { display: flex; flex-direction: column; gap: 14px; }
.num-item { display: flex; gap: 14px; align-items: flex-start; }
.num-idx {
  flex-shrink: 0; width: 32px; height: 32px; display: flex;
  align-items: center; justify-content: center;
  background: var(--accent); color: var(--white); border-radius: 8px;
  font-size: 13px; font-weight: 700;
}
.num-item p { font-size: 14px; color: var(--text); line-height: 1.6; padding-top: 4px; }
.num-item h4 { font-size: 15px; font-weight: 600; margin-bottom: 4px; color: var(--primary); }

/* ============ SERVICE LIST (numbered 01-04) ============ */
.service-list { display: flex; flex-direction: column; gap: 24px; }
.service-item {
  display: flex; gap: 20px; align-items: flex-start;
  padding: 28px; background: var(--white); border-radius: 14px;
  border: 1px solid var(--border); transition: all var(--ease);
}
.service-item:hover { box-shadow: var(--shadow-md); border-color: transparent; }
.service-num {
  flex-shrink: 0; font-size: 28px; font-weight: 900;
  color: var(--accent); line-height: 1; padding-top: 2px;
}
.service-item h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.service-item > p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* ============ METHOD STEPS ============ */
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step-card {
  text-align: center; padding: 32px 20px;
  background: var(--white); border-radius: 14px;
  border: 1px solid var(--border); transition: all var(--ease);
}
.step-card:hover { border-color: var(--accent); box-shadow: var(--shadow-md); }
.step-no {
  display: block; font-size: 32px; font-weight: 900;
  color: var(--accent); margin-bottom: 12px; line-height: 1;
}
.step-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 10px; }
.step-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* ============ CASES ============ */
.case-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.case-card {
  background: var(--white); border-radius: 16px; overflow: hidden;
  border: 1px solid var(--border); transition: all var(--ease);
}
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.case-image-placeholder {
  width: 100%; height: 180px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.3); font-size: 13px;
}
.case-body { padding: 24px; }
.case-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.case-tag {
  padding: 3px 12px; font-size: 11px; font-weight: 600;
  background: rgba(26,111,181,0.08); color: var(--accent);
  border-radius: 20px;
}
.case-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 10px; line-height: 1.5; }
.case-card > .case-body > p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* Case detail page */
.case-detail { margin-bottom: 48px; }
.case-detail-header {
  display: flex; align-items: center; gap: 24px; margin-bottom: 32px;
  flex-wrap: wrap;
}
.case-detail-img {
  width: 100%; max-width: 500px; height: 280px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 16px; display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.3); font-size: 14px; flex-shrink: 0;
}
.case-detail-body { flex: 1; }
.case-detail-body h3 { font-size: 22px; margin-bottom: 16px; }
.case-section { margin-bottom: 24px; }
.case-section h4 {
  font-size: 15px; font-weight: 700; color: var(--primary);
  margin-bottom: 10px; padding-left: 14px;
  border-left: 3px solid var(--accent);
}
.case-section p, .case-section li {
  font-size: 14px; color: var(--text-secondary); line-height: 1.8;
}
.case-section ul { padding-left: 18px; }
.case-section ul li { padding-left: 6px; position: relative; }
.case-section ul li::before {
  content: ''; position: absolute; left: 0; top: 10px;
  width: 6px; height: 2px; background: var(--accent); border-radius: 1px;
}
.case-data-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 20px; }
.case-data-item {
  padding: 16px; background: var(--bg-light); border-radius: 10px;
  border: 1px solid var(--border); text-align: center;
}
.case-data-num { font-size: 24px; font-weight: 900; color: var(--accent); }
.case-data-label { font-size: 12px; color: var(--text-secondary); margin-top: 4px; }

/* ============ PLATFORMS ============ */
.platform-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.platform-card {
  background: var(--white); border-radius: 16px; overflow: hidden;
  border: 1px solid var(--border); transition: all var(--ease);
}
.platform-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.platform-card-header {
  padding: 28px 28px 24px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white); display: flex; align-items: center; gap: 16px;
}
.platform-card-icon {
  width: 48px; height: 48px; display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,0.1); border-radius: 12px; font-size: 20px; flex-shrink: 0;
}
.platform-card-header h3 { font-size: 20px; font-weight: 700; color: var(--white); }
.platform-card-body { padding: 24px 28px 28px; }
.platform-card-body > p { font-size: 14px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 16px; }
.platform-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 14px; font-weight: 600; color: var(--accent);
}
.platform-link:hover { gap: 10px; }

.platform-card.featured {
  background: linear-gradient(160deg, var(--primary), var(--primary-light));
  border-color: transparent; color: var(--white);
}
.platform-card.featured:hover { box-shadow: 0 12px 40px rgba(11,29,58,0.3); }
.platform-card.featured .platform-card-body > p { color: rgba(255,255,255,0.7); }
.platform-card.featured .platform-link { color: var(--gold-light); }
.platform-card.featured .platform-card-icon { background: rgba(200,169,81,0.15); color: var(--gold-light); }

.platform-note {
  margin-top: 48px; padding: 24px; background: var(--bg-light);
  border-radius: 12px; border-left: 4px solid var(--gold);
}
.platform-note p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* ============ STATS ============ */
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.stat-item {
  padding: 48px 20px; text-align: center; position: relative;
  border: 1px solid var(--border); background: var(--white);
  transition: all var(--ease);
}
.stat-item:hover { background: var(--bg-light); transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.stat-item:not(:last-child)::after {
  content: ''; position: absolute; right: 0; top: 25%; height: 50%;
  width: 1px; background: var(--border);
}
.stat-num {
  display: flex; align-items: baseline; justify-content: center;
  font-size: 56px; font-weight: 900; color: var(--accent);
  line-height: 1; margin-bottom: 16px; letter-spacing: -1px;
}
.stat-num .unit { font-size: 20px; font-weight: 700; margin-left: 2px; }
.stat-label { font-size: 13px; color: var(--text-secondary); white-space: nowrap; }

/* ============ TIMELINE ============ */
/* old left-aligned timeline (kept for reference) */
.timeline { position: relative; padding-left: 40px; }
.timeline::before {
  content: ''; position: absolute; left: 15px; top: 0; bottom: 0;
  width: 2px; background: var(--border);
}
.timeline-item { position: relative; margin-bottom: 32px; }
.timeline-item:last-child { margin-bottom: 0; }
.timeline-dot {
  position: absolute; left: -33px; top: 4px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--accent); border: 3px solid var(--white);
  box-shadow: 0 0 0 2px var(--accent);
}
.timeline-year {
  font-size: 18px; font-weight: 800; color: var(--accent); margin-bottom: 6px;
}
.timeline-text { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* new center-axis timeline */
.timeline-center { position: relative; padding: 20px 0; }
.timeline-center::before {
  content: ''; position: absolute; left: 50%; top: 0; bottom: 0;
  width: 3px; background: linear-gradient(to bottom, var(--gold), var(--accent), var(--gold));
  transform: translateX(-50%); border-radius: 2px;
}
.tl-item {
  position: relative; width: 45%; padding: 0; margin-bottom: 48px;
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.tl-item.visible { opacity: 1; transform: translateY(0); }
.tl-item:nth-child(odd) { margin-right: auto; text-align: right; padding-right: 48px; }
.tl-item:nth-child(even) { margin-left: auto; text-align: left; padding-left: 48px; }
.tl-item:nth-child(odd) .tl-year { margin-right: 0; }
.tl-item:nth-child(even) .tl-year { margin-left: 0; }

/* connector line from year to card */
.tl-item::before {
  content: ''; position: absolute; top: 22px;
  width: 30px; height: 2px;
}
.tl-item:nth-child(odd)::before { right: -30px; }
.tl-item:nth-child(even)::before { left: -30px; }

/* center dot */
.tl-item::after {
  content: ''; position: absolute; top: 14px;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--gold); border: 3px solid var(--white);
  box-shadow: 0 0 0 3px var(--gold), 0 2px 8px rgba(255,133,0,0.3);
}
.tl-item:nth-child(odd)::after { right: -39px; }
.tl-item:nth-child(even)::after { left: -39px; }

.tl-year {
  display: block; font-size: 28px; font-weight: 900;
  color: var(--gold); margin-bottom: 10px;
}
.tl-card {
  display: block; padding: 24px 28px;
  background: var(--white); border-radius: 14px;
  border: 1px solid var(--border);
  transition: all var(--ease);
}
.tl-card:hover { box-shadow: var(--shadow-lg); border-color: var(--gold); }
.tl-topic {
  display: block; font-size: 18px; font-weight: 700;
  color: var(--primary); margin-bottom: 8px;
}
.tl-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.8; margin: 0; }

@media (max-width: 768px) {
  .timeline-center::before { left: 20px; }
  .tl-item { width: 100%; padding-left: 52px !important; padding-right: 0 !important; text-align: left !important; }
  .tl-item:nth-child(odd)::before, .tl-item:nth-child(even)::before { left: -32px; right: auto; }
  .tl-item:nth-child(odd)::after, .tl-item:nth-child(even)::after { left: -39px; right: auto; }
  .tl-item:nth-child(odd) .tl-year { margin-right: 0; }
  .tl-item:nth-child(even) .tl-year { margin-left: 0; }
}

/* ============ CAPABILITY DETAIL ============ */
.cap-block {
  margin-bottom: 48px; padding: 36px;
  background: var(--white); border-radius: 16px;
  border: 1px solid var(--border);
}
.cap-block:last-child { margin-bottom: 0; }
.cap-block-header {
  display: flex; align-items: center; gap: 16px; margin-bottom: 20px;
}
.cap-num {
  font-size: 28px; font-weight: 900; color: var(--accent); line-height: 1;
}
.cap-block h3 { font-size: 22px; font-weight: 700; }
.cap-block > p { font-size: 15px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 24px; }
.cap-details { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.cap-detail-item {
  padding: 20px; background: var(--bg-light); border-radius: 10px;
}
.cap-detail-item h4 {
  font-size: 13px; font-weight: 700; color: var(--accent);
  text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px;
}
.cap-detail-item p, .cap-detail-item li {
  font-size: 14px; color: var(--text-secondary); line-height: 1.7;
}

/* ============ SCENARIO GRID ============ */
.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.scenario-card {
  padding: 32px 28px; background: var(--white); border-radius: 14px;
  border: 1px solid var(--border); transition: all var(--ease);
}
.scenario-card:hover { box-shadow: var(--shadow-md); border-color: transparent; }
.scenario-icon {
  width: 48px; height: 48px; display: flex; align-items: center; justify-content: center;
  background: rgba(24,44,167,0.08); border-radius: 12px;
  color: var(--accent); font-size: 20px; margin-bottom: 18px;
}
.scenario-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.scenario-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* ============ CUSTOMER ENTRANCE ============ */
.entrance-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.entrance-card {
  padding: 28px 20px; text-align: center;
  border-radius: 14px; border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  background: var(--white); transition: all var(--ease);
  cursor: pointer;
}
.entrance-card:nth-child(odd) { border-left-color: var(--accent); background: rgba(24,44,167,0.02); }
.entrance-card:nth-child(even) { border-left-color: var(--gold); background: rgba(255,133,0,0.02); }
.entrance-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.entrance-card h3 { font-size: 15px; font-weight: 700; margin-bottom: 8px; white-space: nowrap; }
.entrance-card p { font-size: 12px; color: var(--text-secondary); line-height: 1.6; white-space: nowrap; }
.entrance-link {
  display: inline-block; margin-top: 12px; font-size: 13px;
  font-weight: 600; color: var(--accent);
}

/* ============ CONTACT ============ */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.contact-info-list { display: flex; flex-direction: column; gap: 20px; }
.contact-info-item { display: flex; gap: 16px; align-items: flex-start; }
.contact-info-icon {
  width: 44px; height: 44px; display: flex; align-items: center; justify-content: center;
  background: var(--bg-light); border-radius: 10px; color: var(--accent);
  font-size: 16px; flex-shrink: 0; border: 1px solid var(--border);
}
.contact-info-item h4 { font-size: 14px; font-weight: 700; margin-bottom: 4px; }
.contact-info-item p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }

.contact-form {
  background: var(--white); border-radius: 16px; padding: 36px;
  box-shadow: var(--shadow-md); border: 1px solid var(--border);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block; font-size: 13px; font-weight: 600;
  color: var(--primary); margin-bottom: 6px;
}
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 12px 14px; font-size: 14px; font-family: var(--font);
  border: 1px solid var(--border); border-radius: 8px;
  background: var(--bg-light); color: var(--text); transition: all var(--ease); outline: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--accent); box-shadow: 0 0 0 3px rgba(26,111,181,0.08); background: var(--white);
}
.form-group textarea { resize: vertical; min-height: 110px; }
.form-group select {
  cursor: pointer; appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748B' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 14px center;
}

/* ============ FOOTER ============ */
.site-footer {
  background: var(--primary-dark); color: rgba(255,255,255,0.5);
  padding: 32px 0 0;
}
.footer-main {
  max-width: 1100px; margin: 0 auto; padding: 0 24px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.footer-main .footer-col:nth-child(2) { padding-left: 75px; }

/* Footer column shared styles */
.footer-col { flex: 1; min-width: 0; }
.footer-col-title {
  font-size: 15px; font-weight: 700; color: var(--white);
  letter-spacing: 1px; margin-bottom: 10px;
}
.footer-col-divider {
  width: 32px; height: 3px; border-radius: 2px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  margin-bottom: 14px;
}

/* Left: Slogan + Intro */
.footer-slogan h3 {
  font-size: 20px; font-weight: 800; color: var(--white); letter-spacing: 2px;
  margin-bottom: 10px;
}
.footer-intro-text p { font-size: 13px; line-height: 1.8; }

/* Middle: Nav + Contact */
.footer-col ul { display: flex; flex-direction: column; gap: 8px; }
.footer-col ul li a { font-size: 13px; color: rgba(255,255,255,0.45); transition: color var(--ease); }
.footer-col ul li a:hover { color: var(--white); }
.footer-mid-contact { display: flex; flex-direction: column; gap: 8px; margin-top: 10px; }
.footer-mid-contact p { font-size: 13px; margin: 0; }
.footer-phone {
  font-size: 18px !important; font-weight: 800 !important; color: var(--gold) !important;
}

/* Right: QR */
.footer-qr-section { flex: 0 0 auto; min-width: 240px; }
.footer-qr-grid { display: flex; gap: 12px; }
.footer-qr-item { text-align: center; }
.footer-qr-item img { width: 70px; height: 70px; border-radius: 6px; margin-bottom: 6px; }
.footer-qr-item span { font-size: 11px; color: rgba(255,255,255,0.4); }

.footer-bottom {
  width: 100%; margin: 20px auto 0; padding: 16px 48px;
  border-top: 1px solid rgba(255,255,255,0.06);
  text-align: center;
}
.footer-bottom p { font-size: 12px; color: rgba(255,255,255,0.3); }

@media (max-width: 1024px) {
  .footer-main { grid-template-columns: 1fr 1fr; padding: 0 24px; }
}

/* ============ BACK TO TOP ============ */
.back-to-top {
  position: fixed; bottom: 28px; right: 28px;
  width: 44px; height: 44px; display: flex; align-items: center; justify-content: center;
  background: var(--accent); color: var(--white); border-radius: 12px;
  font-size: 15px; box-shadow: var(--shadow-md);
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: all var(--ease); z-index: 999;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--accent-dark); transform: translateY(-2px); }

/* ============ CTA BANNER ============ */
.cta-banner {
  padding: 60px 0; background: linear-gradient(160deg, var(--primary), var(--primary-light));
  text-align: center; color: var(--white);
}
.cta-banner h2 { font-size: 28px; font-weight: 800; color: var(--white); margin-bottom: 12px; }
.cta-banner p { font-size: 16px; color: rgba(255,255,255,0.6); margin-bottom: 28px; }

/* ============ IMAGE PLACEHOLDER ============ */
.img-placeholder,
.case-image-placeholder,
.case-detail-img {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.5); font-size: 14px; border-radius: 12px;
}
.about-image-placeholder {
  width: 100%; height: 400px;
  background: linear-gradient(135deg, rgba(24,44,167,0.08), rgba(255,133,0,0.08));
  border: 2px dashed var(--border); border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-light); font-size: 15px;
}
.cap-image-placeholder {
  width: 100%; height: 320px; margin-top: 24px;
  background: linear-gradient(135deg, rgba(24,44,167,0.06), rgba(24,44,167,0.12));
  border: 2px dashed var(--border); border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-light); font-size: 15px;
}
.scenario-image-placeholder {
  width: 100%; height: 200px; margin-bottom: 16px;
  background: linear-gradient(135deg, rgba(24,44,167,0.06), rgba(255,133,0,0.08));
  border: 2px dashed var(--border); border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-light); font-size: 13px;
}

/* ============ ABOUT PAGE SPECIFIC ============ */
.about-intro {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start;
  margin-bottom: 64px;
}
.about-text h3 {
  font-size: 24px; font-weight: 800; margin-bottom: 20px;
  position: relative; padding-left: 18px;
}
.about-text h3::before {
  content: ''; position: absolute; left: 0; top: 5px;
  width: 4px; height: 24px; background: var(--accent); border-radius: 2px;
}
.about-text p { font-size: 15px; color: var(--text-secondary); line-height: 1.9; margin-bottom: 16px; }

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
  .hero-title { font-size: 40px; line-height: 1.4; }
  .page-hero h1 { font-size: 32px; }
  .dual-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .case-list { grid-template-columns: 1fr; }
  .platform-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .scenario-grid { grid-template-columns: repeat(2, 1fr); }
  .entrance-grid { grid-template-columns: repeat(3, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .about-intro { grid-template-columns: 1fr; }
  .cap-details { grid-template-columns: 1fr; }
  .case-data-grid { grid-template-columns: repeat(3, 1fr); }
  .case-detail-header { flex-direction: column; }
}

@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .section-title { font-size: 26px; }

  .main-nav {
    position: fixed; top: 0; right: -100%; width: 80%; max-width: 300px;
    height: 100vh; background: var(--white);
    flex-direction: column; padding: 80px 24px 40px; gap: 2px;
    transition: right var(--ease); box-shadow: -10px 0 40px rgba(0,0,0,0.15);
  }
  .main-nav.active { right: 0; }
  .main-nav a { display: block; width: 100%; padding: 14px 18px; font-size: 16px; }
  .nav-toggle { display: flex; }
  .nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
  .nav-toggle.active span:nth-child(2) { opacity: 0; }
  .nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

  .hero-title { font-size: 32px; line-height: 1.4; }
  .hero-desc-full { font-size: 14px; }
  .hero-methodology { gap: 8px; }
  .method-step { padding: 8px 16px; font-size: 14px; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { width: 100%; justify-content: center; }
  .hero-badge { flex-direction: column; gap: 4px; padding: 10px 18px; }

  .steps-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr; }
  .scenario-grid { grid-template-columns: 1fr; }
  .entrance-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; }
  .footer-nav { flex-direction: column; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .case-data-grid { grid-template-columns: 1fr; }
  .about-image-placeholder { height: 280px; }
  .cap-image-placeholder { height: 220px; }
  .scenario-image-placeholder { height: 160px; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 26px; line-height: 1.4; }
  .hero-methodology { flex-direction: column; }
  .method-arrow { transform: rotate(90deg); }
  .page-hero h1 { font-size: 26px; }
}