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

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --accent: #06b6d4;
  --accent-light: #22d3ee;
  --dark: #0f172a;
  --dark-soft: #1e293b;
  --gray: #64748b;
  --gray-light: #94a3b8;
  --bg: #f8fafc;
  --white: #ffffff;
  --gradient: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 20px 60px rgba(15, 23, 42, 0.12);
  --radius: 12px;
  --radius-lg: 20px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--dark);
  background: var(--bg);
  line-height: 1.7;
  overflow-x: hidden;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
  transition: box-shadow 0.3s;
}

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

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--dark);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.1rem;
  font-weight: 700;
}

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

.nav a {
  font-size: 0.95rem;
  color: var(--gray);
  font-weight: 500;
  transition: color 0.2s;
}

.nav a:hover { color: var(--primary); }

.header-contact {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-phone {
  font-size: 0.9rem;
  color: var(--gray);
}

.header-phone strong { color: var(--primary); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.25s;
}

.btn-primary {
  background: var(--gradient);
  color: white;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.45);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: white;
}

.btn-white {
  background: white;
  color: var(--primary);
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: 0.3s;
}

/* Hero */
.hero {
  position: relative;
  padding: 160px 0 100px;
  background: linear-gradient(160deg, #0f172a 0%, #1e3a5f 50%, #0f172a 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.12) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(6, 182, 212, 0.15);
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: 50px;
  color: var(--accent-light);
  font-size: 0.85rem;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  color: white;
  line-height: 1.25;
  margin-bottom: 20px;
}

.hero h1 span {
  background: linear-gradient(90deg, #22d3ee, #60a5fa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--gray-light);
  margin-bottom: 36px;
  max-width: 520px;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-visual {
  position: relative;
}

.hero-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 32px;
  backdrop-filter: blur(8px);
}

.hero-platforms {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.platform-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.platform-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.platform-icon.p1 { background: linear-gradient(135deg, #3b82f6, #1d4ed8); }
.platform-icon.p2 { background: linear-gradient(135deg, #06b6d4, #0891b2); }
.platform-icon.p3 { background: linear-gradient(135deg, #8b5cf6, #6d28d9); }
.platform-icon.p4 { background: linear-gradient(135deg, #f59e0b, #d97706); }

.platform-item span {
  color: white;
  font-size: 0.9rem;
  font-weight: 500;
}

.hero-badge {
  position: absolute;
  bottom: -20px;
  right: -10px;
  background: white;
  padding: 16px 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
}

.hero-badge-num {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
}

.hero-badge-text {
  font-size: 0.8rem;
  color: var(--gray);
  line-height: 1.4;
}

/* Section common */
section { padding: 100px 0; }

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 60px;
}

.section-tag {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(37, 99, 235, 0.08);
  color: var(--primary);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--dark);
}

.section-header p {
  color: var(--gray);
  font-size: 1.05rem;
}

/* Features */
.features { background: var(--white); }

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  padding: 32px 24px;
  border-radius: var(--radius-lg);
  background: var(--bg);
  border: 1px solid rgba(15, 23, 42, 0.06);
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.feature-num {
  font-size: 3rem;
  font-weight: 800;
  color: rgba(37, 99, 235, 0.08);
  position: absolute;
  top: 12px;
  right: 16px;
  line-height: 1;
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--gray);
}

/* Why us */
.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.why-content h2 {
  font-size: clamp(1.75rem, 3vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 20px;
}

.why-content > p {
  color: var(--gray);
  margin-bottom: 32px;
  font-size: 1.05rem;
}

.why-list li {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}

.why-check {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.85rem;
  font-weight: 700;
}

.why-list h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.why-list p {
  font-size: 0.9rem;
  color: var(--gray);
}

.why-visual {
  background: var(--gradient);
  border-radius: var(--radius-lg);
  padding: 48px;
  color: white;
  position: relative;
  overflow: hidden;
}

.why-visual::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -30%;
  width: 300px;
  height: 300px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
}

.why-visual h3 {
  font-size: 1.5rem;
  margin-bottom: 16px;
  position: relative;
}

.why-visual p {
  opacity: 0.9;
  margin-bottom: 32px;
  position: relative;
}

.why-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  position: relative;
}

.why-stat {
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}

.why-stat-num {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 4px;
}

.why-stat-label {
  font-size: 0.8rem;
  opacity: 0.85;
}

/* Process */
.process { background: var(--white); }

.process-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.process-step {
  text-align: center;
  padding: 36px 24px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(15, 23, 42, 0.06);
  transition: all 0.3s;
  position: relative;
}

.process-step:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
}

.step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient);
  color: white;
  font-weight: 700;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.process-step h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.process-step p {
  font-size: 0.9rem;
  color: var(--gray);
}

/* Stats bar */
.stats-bar {
  background: var(--dark);
  padding: 60px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-item-num {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--accent-light);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-item-num span { font-size: 1.5rem; }

.stat-item-label {
  color: var(--gray-light);
  font-size: 0.95rem;
}

/* Compare */
.compare-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.compare-card {
  padding: 36px;
  border-radius: var(--radius-lg);
  background: var(--white);
  border: 1px solid rgba(15, 23, 42, 0.06);
  transition: all 0.3s;
}

.compare-card:hover {
  box-shadow: var(--shadow-lg);
}

.compare-card.highlight {
  border-color: var(--primary);
  background: linear-gradient(180deg, rgba(37, 99, 235, 0.03) 0%, white 100%);
}

.compare-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.compare-badge {
  padding: 2px 10px;
  background: var(--gradient);
  color: white;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
}

.compare-card ul li {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 0.92rem;
  color: var(--gray);
}

.compare-card ul li::before {
  content: '✓';
  color: var(--primary);
  font-weight: 700;
  flex-shrink: 0;
}

.compare-card.negative ul li::before {
  content: '✗';
  color: #ef4444;
}

/* Services */
.services { background: var(--white); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.service-card {
  padding: 32px 24px;
  border-radius: var(--radius-lg);
  background: var(--bg);
  text-align: center;
  transition: all 0.3s;
  border: 1px solid transparent;
}

.service-card:hover {
  background: white;
  border-color: rgba(37, 99, 235, 0.15);
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}

.service-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: rgba(37, 99, 235, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin: 0 auto 20px;
}

.service-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.service-card p {
  font-size: 0.88rem;
  color: var(--gray);
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  border-radius: var(--radius-lg);
  background: var(--gradient);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.about-image-inner {
  text-align: center;
  color: white;
  padding: 40px;
}

.about-image-inner h3 {
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.about-image-inner p { opacity: 0.9; }

.about-content h2 {
  font-size: clamp(1.75rem, 3vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 20px;
}

.about-content > p {
  color: var(--gray);
  margin-bottom: 16px;
  font-size: 1rem;
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.about-tag {
  padding: 6px 16px;
  background: rgba(37, 99, 235, 0.08);
  color: var(--primary);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
}

/* Cases */
.cases { background: var(--bg); }

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.case-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(15, 23, 42, 0.06);
  transition: all 0.3s;
}

.case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.case-thumb {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}

.case-thumb.c1 { background: linear-gradient(135deg, #dbeafe, #bfdbfe); }
.case-thumb.c2 { background: linear-gradient(135deg, #cffafe, #a5f3fc); }
.case-thumb.c3 { background: linear-gradient(135deg, #ede9fe, #ddd6fe); }
.case-thumb.c4 { background: linear-gradient(135deg, #fef3c7, #fde68a); }
.case-thumb.c5 { background: linear-gradient(135deg, #dcfce7, #bbf7d0); }
.case-thumb.c6 { background: linear-gradient(135deg, #fce7f3, #fbcfe8); }

.case-body { padding: 24px; }

.case-tag {
  display: inline-block;
  padding: 2px 10px;
  background: rgba(37, 99, 235, 0.08);
  color: var(--primary);
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.case-body h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.case-body p {
  font-size: 0.85rem;
  color: var(--gray);
}

/* News */
.news { background: var(--white); }

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(15, 23, 42, 0.06);
  overflow: hidden;
  transition: all 0.3s;
}

.news-card:hover {
  box-shadow: var(--shadow);
  border-color: rgba(37, 99, 235, 0.15);
}

.news-date {
  padding: 20px 24px 0;
  font-size: 0.8rem;
  color: var(--gray-light);
}

.news-body { padding: 12px 24px 24px; }

.news-body h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.5;
  transition: color 0.2s;
}

.news-card:hover h3 { color: var(--primary); }

.news-body p {
  font-size: 0.88rem;
  color: var(--gray);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-anchor {
  display: block;
  color: inherit;
  text-decoration: none;
  height: 100%;
}

.news-more {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--primary);
}

.news-list-more {
  margin-top: 32px;
  text-align: center;
}

.news-list-header {
  margin-bottom: 28px;
}

.news-list-header h1 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin: 10px 0 12px;
  color: var(--dark);
}

.news-list-header p {
  color: var(--gray);
  line-height: 1.7;
  max-width: 720px;
}

.news-list-header code {
  font-size: 0.88em;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(15, 23, 42, 0.06);
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.news-list-card {
  background: #fff;
  border: 1px solid rgba(15, 23, 42, 0.06);
  border-radius: 16px;
  padding: 22px 24px;
  box-shadow: var(--shadow);
}

.news-list-card.is-link:hover {
  border-color: rgba(37, 99, 235, 0.2);
  box-shadow: var(--shadow-lg);
}

.news-list-card-link {
  display: block;
  color: inherit;
  text-decoration: none;
}

.news-list-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-bottom: 10px;
  font-size: 0.82rem;
  color: var(--gray-light);
}

.news-list-tags {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px;
}

.news-list-tags em {
  font-style: normal;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.08);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 500;
}

.news-list-card h2 {
  font-size: 1.15rem;
  line-height: 1.45;
  margin-bottom: 8px;
  color: var(--dark);
}

.news-list-card.is-link:hover h2 {
  color: var(--primary);
}

.news-list-card p {
  color: var(--gray);
  font-size: 0.94rem;
  line-height: 1.7;
}

.news-list-soon {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--gray-light);
}

/* Article detail — left TOC + right content */
.article-page {
  padding: 104px 0 72px;
  background:
    radial-gradient(ellipse 70% 42% at 0% 0%, rgba(37, 99, 235, 0.1), transparent 55%),
    #f8fafc;
  min-height: 70vh;
}

.article-shell {
  max-width: 1180px;
}

.article-back {
  display: inline-block;
  margin-bottom: 20px;
  font-size: 0.9rem;
  color: var(--gray);
  transition: color 0.2s;
}

.article-back:hover { color: var(--primary); }

.article-grid {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.article-toc {
  position: sticky;
  top: 96px;
}

.article-toc-panel {
  background: var(--gradient);
  border-radius: 18px;
  padding: 20px 16px;
  box-shadow: var(--shadow-lg);
}

.article-toc-title {
  color: #fff;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 14px;
  padding: 0 6px;
}

.article-toc-nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.article-toc-nav a {
  display: block;
  background: #fff;
  color: var(--dark);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 0.92rem;
  font-weight: 550;
  line-height: 1.4;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.04);
}

.article-toc-nav a:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.12);
  color: var(--primary);
}

.article-related {
  margin-top: 16px;
  background: #fff;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 18px;
  padding: 18px 16px;
  box-shadow: var(--shadow);
}

.article-related-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
  padding: 0 4px;
}

.article-related-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.article-related-list a {
  display: block;
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  background: #f8fafc;
  border: 1px solid rgba(15, 23, 42, 0.05);
  transition: border-color 0.15s, background 0.15s, transform 0.15s;
  text-decoration: none;
  color: inherit;
}

.article-related-list a:hover {
  background: rgba(37, 99, 235, 0.06);
  border-color: rgba(37, 99, 235, 0.18);
  transform: translateY(-1px);
}

.article-related-date {
  display: block;
  font-size: 0.75rem;
  color: var(--gray-light);
  margin-bottom: 4px;
}

.article-related-name {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  line-height: 1.45;
  color: var(--dark);
}

.article-related-list a:hover .article-related-name {
  color: var(--primary);
}

.article-main {
  background: #fff;
  border: 1px solid rgba(15, 23, 42, 0.06);
  border-radius: 20px;
  padding: 36px 40px 40px;
  box-shadow: var(--shadow);
  min-width: 0;
}

.article-header {
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 0.85rem;
  color: var(--gray-light);
}

.article-tag {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 6px;
  background: rgba(37, 99, 235, 0.08);
  color: var(--primary);
  font-weight: 500;
}

.article-header h1 {
  font-size: clamp(1.55rem, 2.6vw, 2.1rem);
  line-height: 1.35;
  margin-bottom: 14px;
  color: var(--dark);
}

.article-summary {
  font-size: 1.02rem;
  line-height: 1.75;
  color: var(--gray);
}

.article-content {
  font-size: 1.02rem;
  line-height: 1.85;
  color: #334155;
}

.article-content > section {
  scroll-margin-top: 100px;
  padding: 0;
  margin: 0 0 8px;
}

.article-content section section {
  scroll-margin-top: 100px;
  margin: 0 0 8px;
  padding: 16px 18px;
  border-radius: 12px;
  background: #f8fafc;
  border: 1px solid rgba(15, 23, 42, 0.04);
}

.article-content h2 {
  font-size: 1.35rem;
  margin: 32px 0 14px;
  padding-left: 12px;
  border-left: 4px solid var(--primary);
  color: var(--dark);
  line-height: 1.4;
}

.article-content #summary h2,
.article-content > section:first-child h2 {
  margin-top: 0;
}

.article-content h3 {
  font-size: 1.08rem;
  margin: 0 0 10px;
  color: var(--dark);
  line-height: 1.45;
}

.article-content p { margin-bottom: 14px; }
.article-content p:last-child { margin-bottom: 0; }

.article-content ul {
  list-style: disc;
  margin: 0 0 16px 1.35em;
  padding: 0;
}

.article-content li {
  margin-bottom: 8px;
  list-style: disc;
}

.article-content strong { color: var(--dark); }

.article-content code {
  font-size: 0.92em;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(15, 23, 42, 0.06);
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 20px;
  font-size: 0.92rem;
  background: #fff;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 12px;
  overflow: hidden;
}

.article-content th,
.article-content td {
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
  line-height: 1.55;
}

.article-content th {
  background: rgba(37, 99, 235, 0.08);
  color: var(--dark);
  font-weight: 600;
}

.article-content tr:last-child td {
  border-bottom: none;
}

.article-content pre {
  margin: 0 0 18px;
  padding: 16px 18px;
  border-radius: 12px;
  background: #0f172a;
  color: #e2e8f0;
  overflow-x: auto;
  font-size: 0.86rem;
  line-height: 1.65;
}

.article-content pre code {
  padding: 0;
  background: transparent;
  color: inherit;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: pre;
}

.article-flow {
  margin: 0 0 20px;
  padding: 18px;
  border-radius: 14px;
  background: linear-gradient(180deg, #eff6ff 0%, #f8fafc 100%);
  border: 1px solid rgba(37, 99, 235, 0.12);
}

.article-flow-steps {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.article-flow-step {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  background: #fff;
  border-radius: 12px;
  border: 1px solid rgba(15, 23, 42, 0.06);
}

.article-flow-num {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--gradient);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.article-flow-step strong {
  display: block;
  margin-bottom: 2px;
  color: var(--dark);
}

.article-flow-step span {
  font-size: 0.88rem;
  color: var(--gray);
  line-height: 1.5;
}

.article-flow-platforms {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.article-flow-platforms span {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.08);
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 600;
}

.article-cta {
  margin-top: 36px;
  padding: 28px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(14, 165, 233, 0.06));
  border: 1px solid rgba(37, 99, 235, 0.12);
  text-align: center;
  scroll-margin-top: 100px;
}

.article-cta h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.article-cta p {
  color: var(--gray);
  margin-bottom: 18px;
  line-height: 1.7;
}

.article-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 28px;
}

.article-pager-item {
  display: block;
  padding: 16px 18px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: var(--shadow);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
  min-width: 0;
}

a.article-pager-item:hover {
  border-color: rgba(37, 99, 235, 0.22);
  box-shadow: var(--shadow-lg);
  transform: translateY(-1px);
}

.article-pager-item.is-next {
  text-align: right;
}

.article-pager-label {
  display: block;
  font-size: 0.78rem;
  color: var(--gray-light);
  margin-bottom: 6px;
}

.article-pager-title {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.45;
  color: var(--dark);
}

a.article-pager-item:hover .article-pager-title {
  color: var(--primary);
}

.article-pager-item.is-empty {
  opacity: 0.55;
  box-shadow: none;
}

.article-pager-item.is-empty .article-pager-title {
  font-weight: 500;
  color: var(--gray-light);
}

@media (max-width: 640px) {
  .article-pager {
    grid-template-columns: 1fr;
  }

  .article-pager-item.is-next {
    text-align: left;
  }
}

@media (max-width: 980px) {
  .article-grid {
    grid-template-columns: 1fr;
  }

  .article-toc {
    position: static;
  }

  .article-toc-panel {
    padding: 16px;
  }

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

  .article-toc-nav a {
    padding: 10px 12px;
    font-size: 0.86rem;
  }

  .article-related-list {
    display: grid;
    grid-template-columns: 1fr;
  }

  .article-main {
    padding: 24px 20px 28px;
  }
}

@media (max-width: 560px) {
  .article-toc-nav {
    grid-template-columns: 1fr;
  }
}

/* CTA */
.cta {
  background: var(--gradient);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
}

.cta h2 {
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  color: white;
  font-weight: 700;
  margin-bottom: 16px;
  position: relative;
}

.cta p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.1rem;
  margin-bottom: 32px;
  position: relative;
}

.cta .btn-white { position: relative; }

/* Footer */
.footer {
  background: var(--dark);
  color: var(--gray-light);
  padding: 60px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo { color: white; margin-bottom: 16px; }

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.8;
}

.footer-col h4 {
  color: white;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 20px;
}

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

.footer-col a {
  font-size: 0.9rem;
  transition: color 0.2s;
}

.footer-col a:hover { color: var(--accent-light); }

.footer-links {
  width: 90%;
  max-width: 90%;
  margin-left: auto;
  margin-right: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 24px 0;
  margin-bottom: 8px;
  line-height: 2;
  font-size: 0.8rem;
  color: var(--gray-light);
}

.footer-links-label {
  color: rgba(255, 255, 255, 0.7);
  margin-right: 4px;
}

.footer-links a {
  color: var(--gray-light);
  transition: color 0.2s;
}

.footer-links a::after {
  content: '|';
  margin: 0 6px;
  color: rgba(255, 255, 255, 0.15);
}

.footer-links a:last-child::after {
  content: none;
}

.footer-links a:hover {
  color: var(--accent-light);
}

.footer-links a.active {
  color: var(--accent-light);
  font-weight: 600;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
}

.footer-bottom-right {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 16px;
}

.footer-bottom a {
  color: var(--gray-light);
  transition: color 0.2s;
}

.footer-bottom a:hover {
  color: var(--accent-light);
}

/* Floating widget */
.float-widget {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.float-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  box-shadow: var(--shadow-lg);
  transition: transform 0.2s;
}

.float-btn:hover { transform: scale(1.08); }

.float-btn.phone { background: var(--primary); color: white; }
.float-btn.wechat { background: #07c160; color: white; }
.float-btn.top { background: white; color: var(--dark); font-size: 1rem; display: none; }

.float-btn.top.show { display: flex; }

/* Modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  z-index: 2000;
  align-items: center;
  justify-content: center;
}

.modal-overlay.active { display: flex; }

.modal {
  background: white;
  border-radius: var(--radius-lg);
  padding: 40px;
  max-width: 400px;
  width: 90%;
  text-align: center;
  animation: modalIn 0.3s ease;
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

.modal h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.modal p { color: var(--gray); margin-bottom: 8px; }

.modal .wechat-id {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  margin: 16px 0;
}

.modal-close {
  margin-top: 20px;
}

/* GEO System */
.system {
  background: linear-gradient(180deg, #f0f7ff 0%, var(--bg) 100%);
}

.system-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 48px;
}

.system-badge {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.system-main h3 {
  font-size: clamp(1.4rem, 2.5vw, 1.75rem);
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.4;
}

.system-main > p {
  color: var(--gray);
  margin-bottom: 28px;
  font-size: 1rem;
  line-height: 1.8;
}

.system-points {
  margin-bottom: 32px;
}

.system-points li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
}

.system-points li:last-child { border-bottom: none; }

.system-points strong {
  font-size: 1rem;
  color: var(--dark);
}

.system-points span {
  font-size: 0.9rem;
  color: var(--gray);
}

.system-flow {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 32px;
  background: var(--dark);
  border-radius: var(--radius-lg);
  color: white;
}

.flow-step {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.flow-step-highlight {
  background: rgba(37, 99, 235, 0.25);
  border-color: rgba(96, 165, 250, 0.4);
  box-shadow: 0 0 20px rgba(37, 99, 235, 0.2);
}

.flow-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.flow-label {
  font-weight: 600;
  font-size: 0.95rem;
}

.flow-desc {
  font-size: 0.8rem;
  color: var(--gray-light);
  margin-left: auto;
  text-align: right;
}

.flow-arrow {
  text-align: center;
  color: var(--accent-light);
  font-size: 1.2rem;
  opacity: 0.6;
}

.system-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.system-card {
  padding: 28px 24px;
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(15, 23, 42, 0.06);
  transition: all 0.3s;
}

.system-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(37, 99, 235, 0.15);
}

.system-card-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.system-card h4 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.system-card p {
  font-size: 0.88rem;
  color: var(--gray);
  line-height: 1.7;
}

.feature-card-highlight,
.service-card-highlight {
  border-color: rgba(37, 99, 235, 0.2);
  background: linear-gradient(180deg, rgba(37, 99, 235, 0.04) 0%, var(--bg) 100%);
}

.feature-card-highlight .feature-icon,
.service-card-highlight .service-icon {
  background: var(--gradient);
  color: white;
  font-size: 1.5rem;
}

.service-card-highlight .service-icon {
  background: var(--gradient);
}

/* Responsive */
@media (max-width: 1024px) {
  .features-grid,
  .services-grid,
  .system-cards { grid-template-columns: repeat(2, 1fr); }
  .system-showcase { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav, .header-contact .header-phone { display: none; }

  .menu-toggle { display: flex; }

  .nav.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: white;
    padding: 24px;
    gap: 16px;
    box-shadow: var(--shadow);
    border-bottom: 1px solid rgba(15, 23, 42, 0.06);
  }

  .hero-grid,
  .why-grid,
  .about-grid { grid-template-columns: 1fr; }

  .hero { padding: 120px 0 80px; }

  .hero-visual { margin-top: 20px; }

  .hero-badge { position: static; margin-top: 20px; }

  .features-grid,
  .services-grid,
  .system-cards,
  .cases-grid,
  .news-grid,
  .compare-grid,
  .stats-grid { grid-template-columns: 1fr; }

  .process-steps { grid-template-columns: 1fr; }

  section { padding: 60px 0; }
  .article-page section { padding: 0; }
  .article-content section section { padding: 16px 18px; }

  .footer-grid { grid-template-columns: 1fr; }
}

/* Nav active */
.nav a.active {
  color: var(--primary);
  font-weight: 600;
}

/* Landing pages (nav SEO singles) */
.page-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  font-size: 0.88rem;
  color: var(--gray);
}
.page-breadcrumb a:hover { color: var(--primary); }

.landing-hero-band {
  background: linear-gradient(135deg, rgba(37,99,235,0.08), rgba(6,182,212,0.08));
  border-radius: var(--radius-lg);
  padding: 28px 28px 8px;
  margin-bottom: 8px;
}

.landing-pipeline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 8px 0 28px;
  padding: 18px;
  background: #fff;
  border: 1px solid rgba(15,23,42,0.06);
  border-radius: var(--radius);
}
.landing-pipeline-step {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--bg);
  border-radius: 10px;
  font-size: 0.9rem;
}
.landing-pipeline-step strong {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
}
.landing-pipeline-step.is-hot {
  background: rgba(37,99,235,0.1);
  outline: 1px solid rgba(37,99,235,0.25);
}
.landing-pipeline-arrow { color: var(--gray-light); }

.landing-card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin: 8px 0 20px;
}
.landing-mini-card {
  background: #fff;
  border: 1px solid rgba(15,23,42,0.06);
  border-radius: var(--radius);
  padding: 18px;
}
.landing-mini-card h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.landing-stat-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 0 0 28px;
}
.landing-stat-strip > div {
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid rgba(15,23,42,0.06);
  padding: 16px 12px;
  text-align: center;
}
.landing-stat-strip strong {
  display: block;
  font-size: 1.6rem;
  color: var(--primary);
  line-height: 1.2;
}
.landing-stat-strip span {
  font-size: 0.82rem;
  color: var(--gray);
}

.landing-pillar {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 16px;
  align-items: start;
  padding: 20px;
  margin-bottom: 14px !important;
  background: #fff;
  border: 1px solid rgba(15,23,42,0.06);
  border-radius: var(--radius);
}
.landing-pillar-num {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
}
.landing-pillar h2 { margin-top: 0; font-size: 1.2rem; }

.landing-timeline {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  border-left: 2px solid rgba(37,99,235,0.2);
}
.landing-timeline > li {
  position: relative;
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 12px;
  margin: 0 0 22px;
  padding-left: 8px;
}
.landing-timeline-badge {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  margin-left: -28px;
}
.landing-timeline-body {
  background: #fff;
  border: 1px solid rgba(15,23,42,0.06);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.landing-timeline-body h2 {
  margin: 0 0 10px;
  font-size: 1.15rem;
}

.landing-flagship {
  background: linear-gradient(135deg, #0f172a, #1e3a8a);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 28px;
}
.landing-flagship-badge {
  display: inline-block;
  font-size: 0.78rem;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(255,255,255,0.12);
  margin-bottom: 12px;
}
.landing-flagship h2 {
  color: #fff;
  margin: 0 0 10px;
  font-size: 1.45rem;
}
.landing-flagship p { color: rgba(255,255,255,0.85); margin-bottom: 18px; }
.landing-flagship-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.landing-flagship .btn-outline {
  color: #fff;
  border-color: rgba(255,255,255,0.35);
}

.landing-product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin: 8px 0 20px;
}
.landing-product-card {
  display: block;
  background: #fff;
  border: 1px solid rgba(15,23,42,0.06);
  border-radius: var(--radius);
  padding: 18px;
  transition: border-color 0.2s, transform 0.2s;
}
.landing-product-card:hover {
  border-color: rgba(37,99,235,0.35);
  transform: translateY(-2px);
}
.landing-product-card.is-hot {
  border-color: rgba(37,99,235,0.35);
  background: rgba(37,99,235,0.04);
}
.landing-product-card h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.landing-case-list { display: flex; flex-direction: column; gap: 14px; margin-bottom: 24px; }
.landing-case-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 16px;
  background: #fff;
  border: 1px solid rgba(15,23,42,0.06);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 0 !important;
}
.landing-case-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
}
.landing-case-tag {
  display: inline-block;
  font-size: 0.78rem;
  color: var(--primary);
  background: rgba(37,99,235,0.08);
  padding: 2px 8px;
  border-radius: 6px;
  margin-bottom: 6px;
}
.landing-case-item h2 {
  margin: 0 0 8px;
  font-size: 1.15rem;
}
.landing-case-focus { color: var(--gray); font-size: 0.92rem; }

.landing-about-hero {
  margin-bottom: 18px;
}
.landing-about-split {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 16px;
  margin-bottom: 28px;
}
.landing-about-panel {
  background: var(--gradient);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  min-height: 160px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}
.landing-about-panel h3 { color: #fff; font-size: 1.6rem; margin-bottom: 8px; }
.landing-about-panel p { color: rgba(255,255,255,0.9); margin: 0; }
.landing-about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-content: center;
}
.landing-about-tags span {
  background: #fff;
  border: 1px solid rgba(15,23,42,0.08);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 0.88rem;
}

.landing-year-rail {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 8px 0 20px;
}
.landing-year-rail > div {
  background: #fff;
  border-radius: var(--radius);
  border-top: 3px solid var(--primary);
  padding: 16px;
}
.landing-year-rail strong {
  display: block;
  font-size: 1.3rem;
  color: var(--primary);
  margin-bottom: 6px;
}

.article-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (max-width: 768px) {
  .landing-card-grid,
  .landing-product-grid,
  .landing-stat-strip,
  .landing-about-split,
  .landing-year-rail {
    grid-template-columns: 1fr;
  }
  .landing-pillar { grid-template-columns: 48px 1fr; }
  .landing-case-item { grid-template-columns: 48px 1fr; }
}

/* Landing FAQ + flow diagram (GEO-friendly) */
.landing-faq {
  margin: 8px 0 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.landing-faq details {
  background: #fff;
  border: 1px solid rgba(15,23,42,0.08);
  border-radius: var(--radius);
  padding: 14px 18px;
}
.landing-faq summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--dark);
  list-style: none;
}
.landing-faq summary::-webkit-details-marker { display: none; }
.landing-faq summary::before {
  content: "Q";
  display: inline-flex;
  width: 22px;
  height: 22px;
  margin-right: 8px;
  border-radius: 6px;
  background: rgba(37,99,235,0.12);
  color: var(--primary);
  font-size: 0.75rem;
  align-items: center;
  justify-content: center;
  vertical-align: middle;
}
.landing-faq details[open] summary { margin-bottom: 10px; }
.landing-faq details p {
  margin: 0;
  color: var(--gray);
  line-height: 1.75;
}

.landing-diagram {
  margin: 12px 0 22px;
  padding: 20px;
  background: #fff;
  border: 1px solid rgba(15,23,42,0.06);
  border-radius: var(--radius-lg);
}
.landing-diagram-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray);
  margin-bottom: 14px;
}
.landing-diagram-row {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 8px;
  margin-bottom: 10px;
}
.landing-diagram-row:last-child { margin-bottom: 0; }
.landing-diagram-box {
  flex: 1 1 140px;
  min-width: 120px;
  padding: 12px 14px;
  border-radius: 10px;
  background: var(--bg);
  border: 1px solid rgba(15,23,42,0.06);
  font-size: 0.88rem;
  line-height: 1.45;
}
.landing-diagram-box strong {
  display: block;
  margin-bottom: 4px;
  color: var(--dark);
}
.landing-diagram-box.is-primary {
  background: rgba(37,99,235,0.08);
  border-color: rgba(37,99,235,0.25);
}
.landing-diagram-box.is-accent {
  background: rgba(6,182,212,0.1);
  border-color: rgba(6,182,212,0.3);
}
.landing-diagram-arrow {
  display: flex;
  align-items: center;
  color: var(--gray-light);
  font-weight: 700;
  padding: 0 2px;
}
.landing-diagram-note {
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--gray);
}

.landing-prose-block {
  background: #fff;
  border-left: 3px solid var(--primary);
  padding: 14px 18px;
  margin: 0 0 18px;
  border-radius: 0 var(--radius) var(--radius) 0;
}