/* ========================================
   智慧医学教育云平台 - 宣传网站 v2
   ======================================== */

:root {
  --primary: #0284c7;
  --primary-light: #38bdf8;
  --primary-dark: #075985;
  --accent: #7c3aed;
  --text: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --bg: #ffffff;
  --bg-alt: #f1f5f9;
  --bg-dark: #0c1929;
  --border: #e2e8f0;
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.07);
  --shadow-lg: 0 24px 64px rgba(15, 23, 42, 0.14);
  --shadow-xl: 0 32px 80px rgba(15, 23, 42, 0.18);
  --radius: 16px;
  --radius-lg: 24px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --header-h: 76px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 26px;
  border-radius: 10px;
  font-size: 0.9375rem;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #0ea5e9, #0369a1);
  color: #fff;
  box-shadow: 0 4px 20px rgba(14, 165, 233, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(14, 165, 233, 0.5);
}

.btn-ghost { background: transparent; color: var(--text-secondary); }
.btn-ghost:hover { color: var(--primary); }

.btn-glass {
  background: rgba(255,255,255,0.15);
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.35);
  backdrop-filter: blur(8px);
}

.btn-glass:hover {
  background: rgba(255,255,255,0.25);
  border-color: rgba(255,255,255,0.6);
}

.btn-lg { padding: 15px 34px; font-size: 1rem; border-radius: 12px; }
.btn-block { width: 100%; }

/* ========== Header ========== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--header-h);
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.0625rem;
}

.logo-img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  border-radius: 8px;
  display: block;
}

.footer-logo {
  margin-bottom: 12px;
}

.footer-logo .logo-img {
  width: 36px;
  height: 36px;
}

.footer-logo .logo-text {
  color: #fff;
}

.nav { display: flex; gap: 32px; }

.nav-link {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  transition: var(--transition);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--primary);
  transition: var(--transition);
}

.nav-link:hover { color: var(--primary); }
.nav-link:hover::after { width: 100%; }

.header-actions { display: flex; gap: 10px; }

.header:not(.scrolled) .nav-link { color: rgba(255,255,255,0.88); }
.header:not(.scrolled) .nav-link:hover { color: #fff; }
.header:not(.scrolled) .logo-text { color: #fff; }
.header:not(.scrolled) .btn-ghost { color: rgba(255,255,255,0.92); }

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

.menu-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text);
  transition: var(--transition);
}

.header:not(.scrolled) .menu-toggle span { background: #fff; }

/* ========== Hero ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 48px) 0 80px;
  overflow: hidden;
}

.hero-carousel {
  position: relative;
  z-index: 1;
  width: 100%;
  overflow: hidden;
  padding-bottom: 56px;
}

.hero-track {
  display: flex;
  transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}

.hero-slide {
  min-width: 100%;
  flex-shrink: 0;
  padding-bottom: 8px;
}

.hero-slide .hero-copy,
.hero-slide .hero-visual {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease 0.15s, transform 0.6s ease 0.15s;
}

.hero-slide.is-active .hero-copy,
.hero-slide.is-active .hero-visual {
  opacity: 1;
  transform: translateY(0);
}

/* 走马灯指示器 — 底部居中，不遮挡左侧文字 */
.hero-dots {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 2;
  padding: 8px 16px;
  background: rgba(0, 0, 0, 0.15);
  border-radius: 100px;
  backdrop-filter: blur(6px);
}

.hero-dot {
  width: 8px;
  height: 8px;
  padding: 0;
  border: none;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.45);
  cursor: pointer;
  transition: width 0.35s ease, background 0.35s ease;
}

.hero-dot:hover {
  background: rgba(255, 255, 255, 0.75);
}

.hero-dot.active {
  width: 28px;
  background: #fff;
  box-shadow: 0 2px 8px rgba(255, 255, 255, 0.3);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
    rgba(7, 47, 73, 0.92) 0%,
    rgba(3, 105, 161, 0.85) 45%,
    rgba(14, 165, 233, 0.75) 100%);
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 56px;
  align-items: center;
}

.hero-copy {
  color: #fff;
  position: relative;
  z-index: 2;
  min-width: 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.22);
  border-radius: 100px;
  font-size: 0.875rem;
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}

.pulse-dot {
  width: 8px; height: 8px;
  background: #4ade80;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.3); }
}

.hero-title {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.03em;
}

.gradient-text {
  background: linear-gradient(90deg, #fff 0%, #7dd3fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.0625rem;
  opacity: 0.92;
  max-width: 520px;
  margin-bottom: 32px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-stats {
  display: flex;
  gap: 36px;
  flex-wrap: wrap;
}

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

.stat-num {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1;
}

.stat-suffix { font-size: 1.25rem; font-weight: 700; }

.stat-label {
  display: block;
  font-size: 0.8125rem;
  opacity: 0.75;
  margin-top: 4px;
}

/* Hero visual */
.hero-visual {
  position: relative;
  min-width: 0;
  overflow: hidden;
}

.hero-image-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.hero-main-img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border: 3px solid rgba(255,255,255,0.2);
  animation: floatImg 6s ease-in-out infinite;
}

@keyframes floatImg {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.float-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: rgba(255,255,255,0.95);
  border-radius: 14px;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(12px);
  animation: floatCard 5s ease-in-out infinite;
  min-width: 180px;
}

.float-card img {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  object-fit: cover;
}

.float-card strong {
  display: block;
  font-size: 0.8125rem;
  color: var(--text);
}

.float-card span {
  font-size: 0.6875rem;
  color: var(--text-muted);
}

.float-card-1 { top: 8%; left: 4%; animation-delay: 0s; }
.float-card-2 { bottom: 12%; right: 4%; animation-delay: -2s; }
.float-card-3 { top: 45%; right: 4%; left: auto; animation-delay: -4s; }

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

.mini-chart {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 36px;
  width: 44px;
  padding: 4px;
  background: var(--bg-alt);
  border-radius: 8px;
}

.mini-chart span {
  flex: 1;
  background: linear-gradient(to top, var(--primary), var(--primary-light));
  border-radius: 2px;
}

.fade-up {
  opacity: 0;
  transform: translateY(28px);
  animation: fadeUp 0.85s ease forwards;
}

.fade-up:nth-child(1) { animation-delay: 0.1s; }
.fade-up:nth-child(2) { animation-delay: 0.2s; }
.fade-up:nth-child(3) { animation-delay: 0.3s; }
.fade-up:nth-child(4) { animation-delay: 0.4s; }
.fade-up:nth-child(5) { animation-delay: 0.5s; }

@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

/* ========== Trust bar ========== */
.trust-bar {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
}

.trust-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.trust-inner p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.trust-inner strong { color: var(--primary); font-size: 1.125rem; }

.trust-tags {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.trust-tags span {
  padding: 6px 16px;
  background: var(--bg-alt);
  border-radius: 100px;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

/* ========== Sections ========== */
.section { padding: 100px 0; }

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

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.875rem, 4vw, 2.625rem);
  font-weight: 800;
  margin-bottom: 14px;
  letter-spacing: -0.025em;
}

.section-title.left { text-align: left; }

.section-desc {
  color: var(--text-secondary);
  font-size: 1.0625rem;
}

.section-desc.left { text-align: left; }

.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.75s ease, transform 0.75s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== Showcase ========== */
.showcase { background: var(--bg-alt); }

.showcase-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 20px;
  height: 420px;
}

.showcase-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: block;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

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

.showcase-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.showcase-card:hover img { transform: scale(1.06); }

.showcase-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(7,47,73,0.88) 0%, rgba(7,47,73,0.2) 55%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 28px;
  color: #fff;
}

.showcase-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--primary);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 10px;
  width: fit-content;
}

.showcase-overlay h3 {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.showcase-large .showcase-overlay h3 { font-size: 1.75rem; }

.showcase-overlay p {
  font-size: 0.9375rem;
  opacity: 0.85;
}

/* ========== Features ========== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

.feature-img {
  height: 220px;
  overflow: hidden;
  position: relative;
}

.feature-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 50%, rgba(255,255,255,0.05) 100%);
}

.feature-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.feature-card:hover .feature-img img { transform: scale(1.08); }

.feature-body { padding: 28px; flex: 1; }

.feature-num {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary);
  background: #e0f2fe;
  padding: 3px 10px;
  border-radius: 100px;
  margin-bottom: 10px;
}

.feature-body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-body p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-bottom: 16px;
  line-height: 1.75;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.feature-tags span {
  padding: 4px 12px;
  background: var(--bg-alt);
  border-radius: 100px;
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

/* ========== Visual banner ========== */
.visual-banner {
  position: relative;
  height: 480px;
  overflow: hidden;
}

.visual-banner-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.visual-banner-content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
  background: rgba(7, 47, 73, 0.72);
  padding: 40px;
}

.visual-banner-content h2 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.3;
}

.visual-banner-content p {
  font-size: 1.0625rem;
  opacity: 0.9;
  margin-bottom: 28px;
  max-width: 560px;
}

/* ========== Advantages ========== */
.advantages { background: var(--bg-alt); }

.advantages-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: start;
}

.advantages-img {
  width: 100%;
  border-radius: var(--radius-lg);
  margin-top: 32px;
  box-shadow: var(--shadow-lg);
}

.advantages-right {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.advantage-card {
  display: flex;
  gap: 16px;
  padding: 22px 24px;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.advantage-card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow);
  transform: translateX(6px);
}

.adv-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-alt);
  border-radius: 12px;
}

.advantage-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.advantage-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ========== Scenarios ========== */
.scenarios-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.tab-btn {
  padding: 10px 24px;
  border: 1.5px solid var(--border);
  background: var(--bg);
  border-radius: 100px;
  font-size: 0.9375rem;
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-secondary);
}

.tab-btn:hover { border-color: var(--primary); color: var(--primary); }

.tab-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 4px 16px rgba(14,165,233,0.35);
}

.scenario-panel {
  display: none;
  grid-template-columns: 1fr 1.1fr;
  gap: 56px;
  align-items: center;
}

.scenario-panel.active {
  display: grid;
  animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.scenario-text h3 {
  font-size: 1.625rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.scenario-text p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.85;
  font-size: 1rem;
}

.scenario-text ul li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 10px;
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.scenario-text ul li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
}

.scenario-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border);
}

.scenario-img img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

/* ========== Workflow ========== */
.workflow { background: var(--bg-alt); }

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

.workflow-item {
  background: var(--bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  text-align: center;
}

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

.workflow-img {
  height: 160px;
  overflow: hidden;
}

.workflow-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.workflow-item:hover .workflow-img img { transform: scale(1.08); }

.step-num {
  display: inline-flex;
  width: 40px; height: 40px;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-weight: 700;
  border-radius: 50%;
  margin: -20px auto 12px;
  position: relative;
  z-index: 1;
  box-shadow: 0 4px 16px rgba(14,165,233,0.4);
}

.workflow-item h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 8px;
  padding: 0 16px;
}

.workflow-item p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: 0 16px 24px;
  line-height: 1.65;
}

/* ========== Testimonials ========== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

.testimonial-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.testimonial-card.featured {
  background: linear-gradient(135deg, #0c4a6e, #0369a1);
  border-color: transparent;
  color: #fff;
  transform: scale(1.03);
}

.testimonial-card.featured p { color: rgba(255,255,255,0.9); }
.testimonial-card.featured footer span { color: rgba(255,255,255,0.65); }

.stars {
  color: #fbbf24;
  font-size: 1rem;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.testimonial-card p {
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-card footer {
  display: flex;
  align-items: center;
  gap: 14px;
}

.avatar-img {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border);
}

.testimonial-card.featured .avatar-img {
  border-color: rgba(255,255,255,0.3);
}

.testimonial-card footer strong { display: block; font-size: 0.9375rem; }
.testimonial-card footer span { font-size: 0.8125rem; color: var(--text-muted); }

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

.cases-filter {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.case-filter-btn {
  padding: 9px 22px;
  border: 1.5px solid var(--border);
  background: var(--bg);
  border-radius: 100px;
  font-size: 0.875rem;
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-secondary);
}

.case-filter-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.case-filter-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 4px 14px rgba(14, 165, 233, 0.35);
}

.case-type {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary);
  background: #e0f2fe;
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 12px;
}

/* Featured case */
.case-featured {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 0;
  background: var(--bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  margin-bottom: 28px;
  transition: var(--transition);
}

.case-featured.hidden { display: none; }

.case-featured:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.case-featured-img {
  position: relative;
  min-height: 360px;
  overflow: hidden;
}

.case-featured-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.case-featured:hover .case-featured-img img {
  transform: scale(1.05);
}

.case-badge {
  position: absolute;
  top: 20px;
  left: 20px;
  padding: 6px 14px;
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 100px;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.4);
}

.case-featured-body {
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.case-featured-body h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 14px;
  line-height: 1.35;
}

.case-featured-body > p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.8;
  margin-bottom: 24px;
}

.case-metrics {
  display: flex;
  gap: 32px;
  margin-bottom: 24px;
  padding: 20px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.case-metric strong {
  display: block;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.case-metric span {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 4px;
  display: block;
}

.case-modules {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.case-modules span {
  padding: 5px 12px;
  background: var(--bg-alt);
  border-radius: 100px;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

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

.case-card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.case-card.hidden {
  display: none;
}

.case-card.fade-out {
  opacity: 0;
  transform: scale(0.96);
}

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

.case-card-img {
  height: 180px;
  overflow: hidden;
}

.case-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.case-card:hover .case-card-img img {
  transform: scale(1.08);
}

.case-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.case-card-body h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.4;
}

.case-card-body > p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 14px;
  flex: 1;
}

.case-highlight {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: #f0fdf4;
  border-radius: 10px;
  font-size: 0.8125rem;
  color: #15803d;
  font-weight: 500;
  margin-bottom: 14px;
}

.case-highlight svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.case-card .case-modules {
  margin-top: auto;
}

.cases-cta {
  text-align: center;
  margin-top: 56px;
  padding: 40px;
  background: var(--bg);
  border-radius: var(--radius-lg);
  border: 1px dashed var(--border);
}

.cases-cta p {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.cases-cta strong {
  color: var(--primary);
  font-size: 1.25rem;
}

/* ========== Contact ========== */
.contact {
  position: relative;
  padding: 100px 0;
  overflow: hidden;
}

.contact-bg {
  position: absolute;
  inset: 0;
}

.contact-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.contact-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(7,47,73,0.94), rgba(3,105,161,0.88));
}

.contact-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.contact-info-block { color: #fff; }

.contact-info-block h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.25;
}

.contact-info-block > p {
  opacity: 0.9;
  margin-bottom: 28px;
  font-size: 1.0625rem;
}

.contact-details { display: flex; flex-direction: column; gap: 14px; margin-bottom: 28px; }

.contact-row {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
}

.contact-row svg { width: 20px; height: 20px; opacity: 0.85; flex-shrink: 0; }

.contact-preview {
  width: 100%;
  max-width: 380px;
  border-radius: var(--radius);
  border: 2px solid rgba(255,255,255,0.2);
  box-shadow: var(--shadow-xl);
}

.contact-form {
  background: var(--bg);
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
}

.contact-form h3 {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 14px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  font-size: 0.9375rem;
  font-family: inherit;
  transition: var(--transition);
  margin-bottom: 14px;
}

.form-row input { margin-bottom: 0; }

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(14,165,233,0.12);
}

.contact-form textarea { resize: vertical; min-height: 100px; }

.form-note {
  text-align: center;
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 12px;
}

.contact-qr-card {
  background: var(--bg);
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  text-align: center;
}

.contact-qr-card h3 {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.contact-qr-card p {
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
}

.contact-qr-link {
  display: inline-block;
  max-width: 220px;
  width: 100%;
}

.contact-qr-link img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 16px;
  box-shadow: var(--shadow-md);
}

/* ========== Footer ========== */
.footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.65);
  padding-top: 64px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand .logo-text {
  color: #fff;
  font-size: 1.125rem;
  font-weight: 700;
  display: block;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.875rem;
  line-height: 1.8;
}

.footer-col h4 {
  color: #fff;
  font-size: 0.9375rem;
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 0.875rem;
  margin-bottom: 10px;
  transition: var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 22px 0;
  text-align: center;
  font-size: 0.8125rem;
}

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

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

/* ========== Modal ========== */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,0.65);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  backdrop-filter: blur(4px);
}

.modal.show { opacity: 1; visibility: visible; }

.modal-content {
  background: var(--bg);
  padding: 48px;
  border-radius: var(--radius-lg);
  text-align: center;
  max-width: 400px;
  transform: scale(0.9);
  transition: var(--transition);
}

.modal.show .modal-content { transform: scale(1); }

.modal-icon {
  width: 68px; height: 68px;
  border-radius: 50%;
  background: #dcfce7;
  color: #16a34a;
  font-size: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.modal-content h3 { font-size: 1.25rem; margin-bottom: 8px; }
.modal-content p { color: var(--text-secondary); margin-bottom: 24px; }

/* ========== Responsive ========== */
@media (max-width: 1100px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual { max-width: 560px; margin: 0 auto; }
  .float-card-1 { left: 4%; }
  .float-card-2 { right: 4%; }
  .float-card-3 { right: 4%; left: auto; }

  .showcase-grid {
    grid-template-columns: 1fr 1fr;
    height: auto;
  }
  .showcase-large { grid-row: span 2; height: 420px; }
  .showcase-card:not(.showcase-large) { height: 200px; }

  .advantages-layout { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .testimonial-card.featured { transform: none; }

  .case-featured { grid-template-columns: 1fr; }
  .case-featured-img { min-height: 240px; }
  .cases-grid { grid-template-columns: 1fr 1fr; }
}

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

  .nav.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    background: var(--bg);
    padding: 24px;
    box-shadow: var(--shadow-lg);
    gap: 16px;
  }

  .header-actions.open {
    display: flex;
    position: fixed;
    top: calc(var(--header-h) + 220px);
    left: 24px; right: 24px;
    flex-direction: column;
  }

  .menu-toggle { display: flex; }

  .features-grid { grid-template-columns: 1fr; }
  .showcase-grid { grid-template-columns: 1fr; }
  .showcase-large { grid-row: auto; height: 280px; }
  .showcase-card:not(.showcase-large) { height: 200px; }

  .scenario-panel { grid-template-columns: 1fr; }
  .scenario-img img { height: 240px; }

  .workflow-grid { grid-template-columns: 1fr 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .case-metrics { gap: 20px; flex-wrap: wrap; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }

  .float-card { display: none; }
  .visual-banner { height: 360px; }
  .trust-inner { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .section { padding: 72px 0; }
  .workflow-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .contact-form { padding: 28px; }
  .hero-title { font-size: 2rem; }
}