/* ============================================
   冬泽特医 · 落地页样式
   Design System: Medical Trust + Emotional Warmth
   Color Palette: Deep Blue + Cyan + Warm White
   ============================================ */

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

:root {
  --blue-900: #0f1f4e;
  --blue-800: #1a3070;
  --blue-700: #1e40af;
  --blue-600: #2563eb;
  --blue-500: #3b82f6;
  --blue-400: #60a5fa;
  --blue-100: #dbeafe;
  --blue-50:  #eff6ff;
  --cyan-500: #06b6d4;
  --cyan-400: #22d3ee;
  --cyan-100: #cffafe;
  --flower-blue: #4f8bff;
  --gold:  #f59e0b;
  --white: #ffffff;
  --gray-50:  #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-500: #64748b;
  --gray-700: #334155;
  --gray-900: #0f172a;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 40px;
  --shadow-sm:  0 1px 3px rgba(0,0,0,.08);
  --shadow-md:  0 4px 20px rgba(37,99,235,.12);
  --shadow-lg:  0 12px 48px rgba(37,99,235,.18);
  --shadow-xl:  0 24px 80px rgba(15,31,78,.25);
  --transition: .35s cubic-bezier(.4,0,.2,1);
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  color: var(--gray-900);
  background: var(--white);
  overflow-x: hidden;
  line-height: 1.7;
}

img, video { max-width: 100%; display: block; }

a { text-decoration: none; color: inherit; }

ul { list-style: none; }

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

/* ---- Section Header ---- */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-tag {
  display: inline-block;
  padding: 6px 18px;
  border-radius: 99px;
  background: var(--blue-50);
  color: var(--blue-600);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section-header.light .section-tag {
  background: rgba(255,255,255,.15);
  color: var(--cyan-400);
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.25;
  color: var(--gray-900);
  margin-bottom: 16px;
}
.section-title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--blue-600), var(--cyan-500));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-title.white { color: var(--white); }
.section-title.white em {
  background: linear-gradient(135deg, var(--cyan-400), #a5f3fc);
  -webkit-background-clip: text;
  background-clip: text;
}
.section-desc {
  font-size: 1rem;
  color: var(--gray-500);
  max-width: 600px;
  margin: 0 auto;
}
.section-desc.white { color: rgba(255,255,255,.75); }

/* ---- Buttons ---- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  background: linear-gradient(135deg, var(--blue-600), var(--cyan-500));
  color: var(--white);
  border-radius: 99px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(37,99,235,.35);
  white-space: nowrap;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(37,99,235,.5);
}
.btn-primary.full-width { width: 100%; justify-content: center; }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border: 2px solid rgba(255,255,255,.4);
  color: var(--white);
  border-radius: 99px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}
.btn-ghost:hover {
  background: rgba(255,255,255,.15);
  border-color: rgba(255,255,255,.7);
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0;
  transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(15,31,78,.92);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-md);
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-cn {
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--white);
  letter-spacing: .05em;
}
.logo-line {
  width: 1px;
  height: 20px;
  background: rgba(255,255,255,.3);
}
.logo-en {
  font-size: .65rem;
  font-weight: 600;
  color: var(--cyan-400);
  letter-spacing: .2em;
}
.nav-links {
  display: flex;
  gap: 32px;
  margin-left: auto;
}
.nav-links a {
  color: rgba(255,255,255,.8);
  font-size: .9rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
  padding-bottom: 4px;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 2px;
  background: var(--cyan-400);
  transition: var(--transition);
}
.nav-links a:hover { color: var(--white); }
.nav-links a:hover::after { width: 100%; }
.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 9px 22px;
  background: linear-gradient(135deg, var(--blue-600), var(--cyan-500));
  color: var(--white);
  border-radius: 99px;
  font-size: .88rem;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero-bg-video {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg-video video {
  width: 100%; height: 100%;
  object-fit: cover;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(9,18,58,.88) 0%,
    rgba(15,31,78,.75) 50%,
    rgba(6,54,80,.7) 100%
  );
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 120px 24px 80px;
  max-width: 820px;
  animation: fadeUp .8s ease forwards;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  border-radius: 99px;
  border: 1px solid rgba(255,255,255,.25);
  background: rgba(255,255,255,.1);
  backdrop-filter: blur(10px);
  color: var(--cyan-400);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .08em;
  margin-bottom: 24px;
}
.hero-title {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 900;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 20px;
  text-shadow: 0 2px 30px rgba(0,0,0,.3);
}
.hero-title .highlight {
  background: linear-gradient(135deg, #60a5fa, #22d3ee, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 3s ease infinite;
  background-size: 200% 200%;
}
.hero-subtitle {
  font-size: clamp(.95rem, 2vw, 1.15rem);
  color: rgba(255,255,255,.8);
  line-height: 1.8;
  margin-bottom: 40px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 56px;
}
.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  background: rgba(255,255,255,.08);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius-lg);
  padding: 20px 40px;
  flex-wrap: wrap;
}
.stat-item {
  padding: 12px 32px;
  text-align: center;
}
.stat-num {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--white);
  font-variant-numeric: tabular-nums;
}
.stat-unit { font-size: 1rem; color: var(--cyan-400); font-weight: 700; }
.stat-label {
  display: block;
  font-size: .78rem;
  color: rgba(255,255,255,.6);
  margin-top: 4px;
  letter-spacing: .05em;
}
.stat-divider {
  width: 1px; height: 50px;
  background: rgba(255,255,255,.2);
}
.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,.5);
  font-size: .75rem;
  letter-spacing: .1em;
}
.scroll-arrow {
  width: 24px; height: 24px;
  border-right: 2px solid rgba(255,255,255,.4);
  border-bottom: 2px solid rgba(255,255,255,.4);
  transform: rotate(45deg);
  animation: bounce 1.6s ease infinite;
}

/* ============================================
   CRISIS SECTION
   ============================================ */
.crisis {
  padding: 100px 0;
  background: var(--gray-50);
}
.crisis-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 64px;
}
.crisis-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
  transition: var(--transition);
  opacity: 0;
  transform: translateY(30px);
}
.crisis-card.visible {
  opacity: 1;
  transform: translateY(0);
}
.crisis-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--blue-100);
}
.card-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--blue-600), var(--cyan-500));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.1rem;
  margin-bottom: 16px;
}
.card-data { margin-bottom: 8px; }
.card-num {
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--gray-900);
  margin-right: 8px;
}
.card-tag {
  display: inline-block;
  padding: 3px 10px;
  background: var(--blue-50);
  color: var(--blue-600);
  border-radius: 99px;
  font-size: .72rem;
  font-weight: 600;
}
.card-desc {
  font-size: .85rem;
  color: var(--gray-500);
  margin-bottom: 14px;
  line-height: 1.6;
}
.card-bar {
  height: 4px;
  background: var(--gray-100);
  border-radius: 99px;
  overflow: hidden;
}
.card-bar-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--blue-600), var(--cyan-500));
  border-radius: 99px;
  transition: width 1.5s cubic-bezier(.4,0,.2,1) .3s;
}
.crisis-card.visible .card-bar-fill { width: var(--w); }

.crisis-burden {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 32px;
}
.burden-item {
  text-align: center;
  padding: 40px 24px;
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}
.burden-item h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 8px;
}
.burden-item p { font-size: .88rem; color: var(--gray-500); line-height: 1.6; }
.burden-circle {
  position: relative;
  width: 100px; height: 100px;
  margin: 0 auto 20px;
}
.burden-circle svg { width: 100%; height: 100%; }
.burden-pct {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--blue-600);
}
.burden-icon-lg {
  font-size: 3rem;
  background: linear-gradient(135deg, var(--blue-600), var(--cyan-500));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  margin: 0 auto 20px;
}

/* ============================================
   SOLUTION SECTION
   ============================================ */
.solution {
  position: relative;
  padding: 100px 0;
  overflow: hidden;
}
.solution-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--blue-900) 0%, #0c2461 50%, #1a3a5c 100%);
  z-index: 0;
}
.solution-bg::before {
  content: '';
  position: absolute;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(6,182,212,.15) 0%, transparent 70%);
  top: -150px; right: -150px;
}
.solution-bg::after {
  content: '';
  position: absolute;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37,99,235,.2) 0%, transparent 70%);
  bottom: -100px; left: -100px;
}
.solution .container { position: relative; z-index: 1; }

.solution-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: auto auto;
  gap: 20px;
  margin-bottom: 60px;
}
.sol-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}
.sol-card:hover {
  background: rgba(255,255,255,.12);
  border-color: rgba(255,255,255,.25);
  transform: translateY(-4px);
}
.sol-card--featured {
  grid-column: span 2;
  grid-row: span 2;
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.2);
}
.sol-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--blue-600), var(--cyan-500));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.2rem;
  margin-bottom: 18px;
  box-shadow: 0 4px 16px rgba(37,99,235,.4);
}
.sol-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}
.sol-card--featured h3 { font-size: 1.4rem; }
.sol-card p { font-size: .88rem; color: rgba(255,255,255,.7); line-height: 1.7; margin-bottom: 16px; }
.sol-card ul { display: flex; flex-direction: column; gap: 8px; }
.sol-card ul li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .85rem;
  color: rgba(255,255,255,.75);
}
.sol-card ul li i { color: var(--cyan-400); font-size: .8rem; }

/* Marquee */
.marquee-wrap {
  overflow: hidden;
  border-top: 1px solid rgba(255,255,255,.1);
  padding-top: 32px;
  mask-image: linear-gradient(90deg, transparent, black 8%, black 92%, transparent);
}
.marquee-track {
  display: flex;
  gap: 24px;
  white-space: nowrap;
  animation: marquee 20s linear infinite;
}
.marquee-track span {
  font-size: .9rem;
  color: rgba(255,255,255,.5);
  font-weight: 500;
}
.marquee-track span:not(:nth-child(2n)) { color: rgba(255,255,255,.8); font-weight: 600; }

/* ============================================
   WHY SECTION
   ============================================ */
.why {
  padding: 100px 0;
  background: var(--white);
}
.why-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.why-video {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}
.why-video video {
  width: 100%;
  border-radius: var(--radius-lg);
  display: block;
}
.video-glow {
  position: absolute;
  inset: -10px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, rgba(37,99,235,.2), rgba(6,182,212,.2));
  z-index: -1;
  filter: blur(20px);
}

.why-points { display: flex; flex-direction: column; gap: 32px; }
.why-point {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 20px;
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.why-point:hover {
  background: var(--blue-50);
}
.wp-num {
  font-size: 2rem;
  font-weight: 900;
  color: var(--blue-100);
  line-height: 1;
  flex-shrink: 0;
  min-width: 48px;
  font-variant-numeric: tabular-nums;
}
.why-point:hover .wp-num { color: var(--blue-500); }
.wp-content h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 6px;
}
.wp-content p { font-size: .88rem; color: var(--gray-500); line-height: 1.7; }

/* ============================================
   VIDEO GALLERY
   ============================================ */
.videos {
  padding: 100px 0;
  background: var(--gray-50);
}
.video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto;
  gap: 20px;
}
.vg-item { cursor: pointer; }
.vg-item.vg-featured {
  grid-column: span 2;
}
.vg-thumb {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--gray-900);
}
.vg-featured .vg-thumb { aspect-ratio: 16/9; }
.vg-thumb video {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.vg-item:hover .vg-thumb video { transform: scale(1.05); }
.vg-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,.7) 0%, rgba(0,0,0,.1) 60%, transparent 100%);
}
.vg-play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  transition: var(--transition);
}
.vg-play i {
  width: 60px; height: 60px;
  border-radius: 50%;
  background: rgba(255,255,255,.2);
  backdrop-filter: blur(10px);
  border: 2px solid rgba(255,255,255,.4);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.2rem;
  padding-left: 4px;
  transition: var(--transition);
}
.vg-item:hover .vg-play i {
  background: linear-gradient(135deg, var(--blue-600), var(--cyan-500));
  border-color: transparent;
  box-shadow: 0 4px 20px rgba(37,99,235,.5);
  transform: scale(1.1);
}
.vg-info {
  position: absolute;
  bottom: 16px; left: 16px; right: 16px;
  z-index: 3;
}
.vg-tag {
  display: inline-block;
  padding: 3px 10px;
  background: rgba(37,99,235,.7);
  backdrop-filter: blur(6px);
  color: var(--white);
  border-radius: 99px;
  font-size: .7rem;
  font-weight: 600;
  margin-bottom: 6px;
}
.vg-info h4 {
  font-size: .88rem;
  color: var(--white);
  font-weight: 600;
  line-height: 1.4;
}
.vg-featured .vg-info h4 { font-size: 1.05rem; }

/* ---- Lightbox ---- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s ease;
}
.lightbox.open { opacity: 1; pointer-events: all; }
.lb-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.9);
  backdrop-filter: blur(10px);
}
.lb-container {
  position: relative;
  z-index: 1;
  width: 90%;
  max-width: 960px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #000;
  box-shadow: var(--shadow-xl);
  transform: scale(.9);
  transition: transform .3s ease;
}
.lightbox.open .lb-container { transform: scale(1); }
.lb-container video { width: 100%; max-height: 70vh; display: block; }
.lb-close {
  position: absolute;
  top: 16px; right: 16px;
  z-index: 2;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,.15);
  backdrop-filter: blur(10px);
  border: none;
  color: var(--white);
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.lb-close:hover { background: rgba(255,255,255,.3); }

/* ============================================
   MISSION
   ============================================ */
.mission {
  background: linear-gradient(135deg, var(--blue-900) 0%, #0c2461 100%);
  padding: 100px 0;
  overflow: hidden;
}
.mission-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 80px;
  align-items: center;
}
.mission-quote {
  text-align: center;
  padding: 40px;
  border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,.05);
  backdrop-filter: blur(10px);
}
.mission-quote .fa-quote-left {
  font-size: 2rem;
  color: var(--cyan-400);
  margin-bottom: 16px;
  opacity: .6;
}
.mission-quote blockquote {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1.4;
  margin-bottom: 16px;
}
.mission-quote cite {
  font-size: .85rem;
  color: var(--cyan-400);
  font-style: normal;
  font-weight: 600;
  letter-spacing: .1em;
}
.mission-text h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 24px;
}
.mission-text p {
  font-size: .95rem;
  color: rgba(255,255,255,.75);
  line-height: 1.9;
  margin-bottom: 16px;
}
.mission-text .btn-primary { margin-top: 16px; }

/* ============================================
   CONTACT
   ============================================ */
.contact {
  padding: 100px 0;
  background: var(--white);
}
.contact-wrapper {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 64px;
  align-items: flex-start;
}
.contact-form-wrap { position: relative; }
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group label {
  font-size: .85rem;
  font-weight: 600;
  color: var(--gray-700);
}
.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 16px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: .9rem;
  color: var(--gray-900);
  transition: var(--transition);
  background: var(--gray-50);
  outline: none;
  resize: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--blue-500);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(37,99,235,.08);
}
.form-success {
  display: none;
  text-align: center;
  padding: 48px 36px;
  background: linear-gradient(135deg, #f0fdf4, #ecfdf5);
  border-radius: var(--radius-lg);
  border: 2px solid #a7f3d0;
  animation: fadeUp .5s ease forwards;
}
.form-success.show { display: block; }
.success-icon-wrap {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, #10b981, #34d399);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
  box-shadow: 0 8px 24px rgba(16,185,129,.3);
  animation: popIn .5s cubic-bezier(.34,1.56,.64,1) .1s both;
}
.success-icon-wrap .fa-check-circle {
  font-size: 2rem;
  color: var(--white);
}
.form-success h3 {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 10px;
}
.form-success p { color: var(--gray-600); font-size: .95rem; margin-bottom: 4px; }
.success-tip { font-size: .82rem !important; color: var(--gray-400) !important; margin-top: 8px !important; }

/* Error bar */
.form-error {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: #fee2e2;
  border: 1px solid #fecaca;
  border-radius: var(--radius-sm);
  color: #b91c1c;
  font-size: .88rem;
  font-weight: 600;
  margin-top: 8px;
  animation: fadeUp .3s ease forwards;
}
.form-error.show { display: flex; }
.form-error i { font-size: 1rem; flex-shrink: 0; }

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

.contact-info { display: flex; flex-direction: column; gap: 24px; }
.ci-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  border-radius: var(--radius-md);
  background: var(--gray-50);
  transition: var(--transition);
}
.ci-item:hover { background: var(--blue-50); }
.ci-item > i {
  font-size: 1.1rem;
  color: var(--blue-600);
  margin-top: 2px;
  flex-shrink: 0;
  width: 24px;
}
.ci-item h4 { font-size: .9rem; font-weight: 700; color: var(--gray-900); margin-bottom: 2px; }
.ci-item p { font-size: .85rem; color: var(--gray-500); }
.wechat-placeholder {
  padding: 24px;
  border: 2px dashed var(--blue-100);
  border-radius: var(--radius-md);
  text-align: center;
}
.qr-mock {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--blue-500);
}
.qr-mock i { font-size: 3rem; }
.qr-mock span { font-size: .8rem; font-weight: 600; color: var(--gray-500); }

/* ============================================
   FOOTER
   ============================================ */
.footer { background: var(--gray-900); }
.footer-top { padding: 60px 0; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}
.footer-brand .nav-logo { margin-bottom: 16px; }
.footer-brand .logo-cn { color: var(--white); }
.footer-brand p {
  font-size: .85rem;
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: 20px;
}
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-500);
  font-size: .9rem;
  transition: var(--transition);
}
.footer-social a:hover {
  background: var(--blue-600);
  color: var(--white);
}
.footer-links h5 {
  font-size: .85rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 16px;
  letter-spacing: .05em;
}
.footer-links ul { display: flex; flex-direction: column; gap: 8px; }
.footer-links a {
  font-size: .82rem;
  color: var(--gray-500);
  transition: var(--transition);
}
.footer-links a:hover { color: var(--cyan-400); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.06);
  padding: 20px 0;
  text-align: center;
}
.footer-bottom p {
  font-size: .75rem;
  color: var(--gray-500);
  margin-bottom: 4px;
}
.footer-bottom a { color: var(--gray-500); transition: var(--transition); }
.footer-bottom a:hover { color: var(--cyan-400); }

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(40px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes bounce {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50%       { transform: rotate(45deg) translateY(6px); }
}
@keyframes shimmer {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
@keyframes floatBlue {
  0%, 100% { transform: translateY(0) scale(1); opacity: .4; }
  50%       { transform: translateY(-20px) scale(1.05); opacity: .7; }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .solution-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .sol-card--featured { grid-column: span 2; }
  .why-content { grid-template-columns: 1fr; gap: 40px; }
  .mission-inner { grid-template-columns: 1fr; gap: 48px; }
  .contact-wrapper { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    gap: 0;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: rgba(15,31,78,.97);
    backdrop-filter: blur(20px);
    padding: 16px 0;
    border-top: 1px solid rgba(255,255,255,.1);
  }
  .nav-links.open a {
    padding: 14px 24px;
    display: block;
  }
  .nav-container { flex-wrap: wrap; position: relative; }

  .crisis-cards { grid-template-columns: 1fr; }
  .crisis-burden { grid-template-columns: 1fr; }

  .solution-grid { grid-template-columns: 1fr; }
  .sol-card--featured { grid-column: span 1; }

  .video-grid {
    grid-template-columns: 1fr;
  }
  .vg-item.vg-featured { grid-column: span 1; }

  .mission-quote blockquote { font-size: 1.3rem; }

  .form-row { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: 1fr; gap: 24px; }

  .hero-stats {
    flex-direction: column;
    gap: 8px;
    padding: 16px 24px;
  }
  .stat-divider { display: none; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: center; }
  .btn-primary, .btn-ghost { width: 260px; justify-content: center; }
}