/* ===========================
   零零鸽官网 — 样式表
   品牌色: #24533f (深绿) / #e2c185 (金色)
   =========================== */

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

:root {
  --primary:       #24533f;
  --primary-dark:  #1a4030;
  --primary-light: #4a8a6e;
  --gold:          #e2c185;
  --gold-light:    #f0d9a8;
  --bg:            #fafbfc;
  --card:          #ffffff;
  --text:          #1e293b;
  --text-sub:      #64748b;
  --text-muted:    #94a3b8;
  --border:        #e2e8f0;
  --radius:        12px;
  --shadow:        0 4px 24px rgba(0,0,0,.06);
  --shadow-lg:     0 12px 40px rgba(0,0,0,.1);
  --transition:    .3s cubic-bezier(.4,0,.2,1);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
  font-size: 16px;
}

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

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

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

/* ---------- Navbar ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(255,255,255,.96);
  border-bottom-color: var(--border);
  box-shadow: 0 1px 12px rgba(0,0,0,.06);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--primary);
}

.logo-icon { height: 36px; width: auto; }
.logo small { font-weight: 400; font-size: .75rem; color: var(--text-sub); margin-left: 4px; }

.nav-links {
  display: flex;
  list-style: none;
  gap: 4px;
}

.nav-links a {
  display: block;
  padding: 8px 14px;
  font-size: .875rem;
  font-weight: 500;
  color: var(--text-sub);
  border-radius: 8px;
  transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
  background: rgba(36,83,63,.06);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

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

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(170deg, #0f2e20 0%, #1a4030 25%, #24533f 50%, #2d6a4f 75%, #1a4535 100%);
  overflow: hidden;
}

/* 星空点阵纹理 */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 10% 15%, rgba(255,255,255,.25) 50%, transparent 50%),
    radial-gradient(1px 1px at 25% 35%, rgba(255,255,255,.2) 50%, transparent 50%),
    radial-gradient(1.5px 1.5px at 45% 10%, rgba(255,255,255,.15) 50%, transparent 50%),
    radial-gradient(1px 1px at 60% 25%, rgba(255,255,255,.2) 50%, transparent 50%),
    radial-gradient(1px 1px at 75% 45%, rgba(255,255,255,.18) 50%, transparent 50%),
    radial-gradient(1.5px 1.5px at 85% 15%, rgba(255,255,255,.12) 50%, transparent 50%),
    radial-gradient(1px 1px at 15% 55%, rgba(255,255,255,.15) 50%, transparent 50%),
    radial-gradient(1px 1px at 35% 65%, rgba(255,255,255,.1) 50%, transparent 50%),
    radial-gradient(1px 1px at 55% 50%, rgba(255,255,255,.2) 50%, transparent 50%),
    radial-gradient(1px 1px at 90% 60%, rgba(255,255,255,.12) 50%, transparent 50%),
    radial-gradient(1px 1px at 5% 80%, rgba(255,255,255,.1) 50%, transparent 50%),
    radial-gradient(1.5px 1.5px at 70% 70%, rgba(255,255,255,.08) 50%, transparent 50%);
  animation: twinkle 6s ease-in-out infinite alternate;
}

@keyframes twinkle {
  0%   { opacity: .6; }
  50%  { opacity: 1; }
  100% { opacity: .7; }
}

/* 叠加纹理 */
.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(255,255,255,.008) 2px, rgba(255,255,255,.008) 4px),
    repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(255,255,255,.005) 2px, rgba(255,255,255,.005) 4px);
}

/* 山谷剪影 */
.hero-mountains {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1;
  pointer-events: none;
}

.mountain-svg {
  display: block;
  width: 100%;
  height: auto;
  min-height: 250px;
}

.mtn { transition: none; }

.mtn-far {
  fill: rgba(15,35,24,.5);
  animation: mtnFloat 12s ease-in-out infinite alternate;
}

.mtn-mid {
  fill: rgba(20,48,35,.6);
  animation: mtnFloat 10s ease-in-out infinite alternate-reverse;
}

.mtn-near {
  fill: rgba(12,30,20,.75);
  animation: mtnFloat 14s ease-in-out infinite alternate;
}

@keyframes mtnFloat {
  0%   { transform: translateY(0); }
  100% { transform: translateY(-6px); }
}

/* 浮动粒子容器 */
.hero-particles {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}

.particle {
  position: absolute;
  border-radius: 50%;
  opacity: 0;
  animation: particleFloat linear infinite;
}

@keyframes particleFloat {
  0% {
    opacity: 0;
    transform: translateY(0) translateX(0) scale(.5);
  }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% {
    opacity: 0;
    transform: translateY(-100vh) translateX(40px) scale(1);
  }
}

/* 飞翔的鸽子 */
.hero-pigeons {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  overflow: hidden;
}

.pigeon {
  position: absolute;
  opacity: 0;
}

.pigeon svg {
  display: block;
  width: 100%;
  height: auto;
}

/* 翅膀扇动动画 */
.pigeon-wing {
  animation: wingFlap .4s ease-in-out infinite alternate;
}

@keyframes wingFlap {
  0%   { transform: rotate(-25deg); }
  100% { transform: rotate(20deg); }
}

/* 向左飞的鸽子水平镜像（SVG 默认朝右） */
.pigeon.fly-left svg {
  transform: scaleX(-1);
}

/* 从左往右飞 */
.pigeon.fly-right {
  animation: flyRight var(--fly-duration, 14s) linear var(--fly-delay, 0s) infinite;
}

/* 从右往左飞 */
.pigeon.fly-left {
  animation: flyLeft var(--fly-duration, 14s) linear var(--fly-delay, 0s) infinite;
}

@keyframes flyRight {
  0%   { opacity: 0;  left: -8%; transform: translateY(0); }
  5%   { opacity: var(--fly-opacity, .5); }
  50%  { transform: translateY(calc(var(--fly-sway, -30px))); }
  92%  { opacity: var(--fly-opacity, .5); }
  100% { opacity: 0;  left: 108%; transform: translateY(0); }
}

@keyframes flyLeft {
  0%   { opacity: 0;  right: -8%; transform: translateY(0); }
  5%   { opacity: var(--fly-opacity, .5); }
  50%  { transform: translateY(calc(var(--fly-sway, -20px))); }
  92%  { opacity: var(--fly-opacity, .5); }
  100% { opacity: 0;  right: 108%; transform: translateY(0); }
}

/* 光晕效果 */
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.hero-glow-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(226,193,133,.14) 0%, transparent 70%);
  top: 10%;
  right: -5%;
  animation: glowDrift1 8s ease-in-out infinite alternate;
}

.hero-glow-2 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(74,138,110,.15) 0%, transparent 70%);
  bottom: 10%;
  left: -10%;
  animation: glowDrift2 10s ease-in-out infinite alternate;
}

.hero-glow-3 {
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(226,193,133,.1) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: glowPulse 6s ease-in-out infinite;
}

@keyframes glowDrift1 {
  0%   { transform: translate(0, 0); }
  100% { transform: translate(-40px, 30px); }
}

@keyframes glowDrift2 {
  0%   { transform: translate(0, 0); }
  100% { transform: translate(30px, -20px); }
}

@keyframes glowPulse {
  0%, 100% { opacity: .4; transform: translate(-50%, -50%) scale(1); }
  50%      { opacity: .8; transform: translate(-50%, -50%) scale(1.2); }
}

/* Hero 内容 */
.hero-content {
  position: relative;
  z-index: 3;
  padding: 120px 24px 160px;
}

.hero-eyebrow {
  font-size: .875rem;
  letter-spacing: 3px;
  color: var(--gold-light);
  margin-bottom: 32px;
  font-weight: 300;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 24px;
}

.hero-dot {
  display: inline-block;
  color: var(--gold);
  margin: 0 12px;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  color: var(--gold);
  font-weight: 500;
  margin-bottom: 12px;
  letter-spacing: 4px;
}

.hero-en {
  font-family: 'Playfair Display', serif;
  font-size: .95rem;
  color: rgba(255,255,255,.5);
  font-style: italic;
  margin-bottom: 32px;
}

.hero-tags {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.tag {
  padding: 6px 20px;
  border: 1px solid rgba(226,193,133,.4);
  border-radius: 100px;
  font-size: .8rem;
  color: var(--gold-light);
  letter-spacing: 1px;
}

.hero-cta {
  display: inline-block;
  padding: 14px 40px;
  background: var(--gold);
  color: var(--primary-dark);
  font-weight: 600;
  font-size: .95rem;
  border-radius: 100px;
  transition: var(--transition);
  letter-spacing: 1px;
}

.hero-cta:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(226,193,133,.3);
}

/* Scroll hint */
.hero-scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
}

.mouse {
  width: 26px;
  height: 40px;
  border: 2px solid rgba(255,255,255,.3);
  border-radius: 13px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}

.wheel {
  width: 3px;
  height: 8px;
  background: rgba(255,255,255,.6);
  border-radius: 2px;
  animation: scroll-wheel 1.8s ease-in-out infinite;
}

@keyframes scroll-wheel {
  0%   { opacity: 1; transform: translateY(0); }
  100% { opacity: 0; transform: translateY(12px); }
}

/* ---------- Sections ---------- */
.section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--primary-light);
  margin-bottom: 12px;
}

.section-tag.light { color: var(--gold-light); }

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--text);
}

.section-title.light { color: #fff; }

.section-line {
  width: 48px;
  height: 3px;
  background: var(--gold);
  margin: 0 auto 20px;
  border-radius: 2px;
}

.section-line.light { background: var(--gold); }

.section-desc {
  font-size: 1.05rem;
  color: var(--text-sub);
  max-width: 600px;
  margin: 0 auto;
}

.section-desc.light { color: rgba(255,255,255,.7); }

/* ---------- About ---------- */
.about { background: #fff; }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.about-lead {
  font-size: 1.15rem;
  line-height: 1.9;
  margin-bottom: 20px;
  color: var(--text);
}

.about-text p { color: var(--text-sub); margin-bottom: 28px; }
.about-text strong { color: var(--primary); }

.about-highlights {
  display: flex;
  gap: 32px;
  padding-top: 12px;
}

.highlight-item {
  text-align: center;
}

.highlight-num {
  display: block;
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}

.highlight-num small { font-size: .5em; font-weight: 400; }

.highlight-label {
  font-size: .8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.about-visual {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.about-card {
  padding: 28px;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.about-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--primary-light);
}

.card-icon { font-size: 2rem; margin-bottom: 12px; }

.about-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--primary);
}

.about-card p {
  font-size: .9rem;
  color: var(--text-sub);
}

/* ---------- Industry Chain ---------- */
.chain {
  background: var(--bg);
}

.chain-timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: 60px;
}

.chain-timeline::before {
  content: '';
  position: absolute;
  left: 29px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--gold), var(--primary-light), var(--primary));
}

.chain-step {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 40px;
  padding: 28px 32px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.chain-step:hover {
  transform: translateX(8px);
  box-shadow: var(--shadow);
  border-color: var(--primary-light);
}

.chain-step:last-child { margin-bottom: 0; }

.step-number {
  position: absolute;
  left: -60px;
  top: 28px;
  width: 40px;
  height: 40px;
  background: var(--primary);
  color: var(--gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .75rem;
  font-weight: 700;
  box-shadow: 0 0 0 4px var(--bg);
  z-index: 1;
}

.step-icon {
  font-size: 2rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.step-content h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text);
}

.step-badge {
  display: inline-block;
  padding: 2px 10px;
  font-size: .7rem;
  font-weight: 600;
  border-radius: 100px;
  background: rgba(36,83,63,.08);
  color: var(--primary);
  margin-bottom: 8px;
}

.step-content p {
  font-size: .9rem;
  color: var(--text-sub);
  line-height: 1.7;
}

/* ---------- Products ---------- */
.products { background: #fff; }

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.product-card {
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.product-card.featured {
  border-color: var(--primary-light);
  box-shadow: var(--shadow);
}

.product-card-top {
  padding: 40px 28px 32px;
  background: linear-gradient(135deg, var(--accent, var(--primary)), color-mix(in srgb, var(--accent, var(--primary)) 70%, #000));
  color: #fff;
  text-align: center;
}

.product-tag {
  display: inline-block;
  padding: 4px 14px;
  border: 1px solid rgba(255,255,255,.3);
  border-radius: 100px;
  font-size: .7rem;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.product-name-big {
  font-size: 3.5rem;
  font-weight: 900;
  letter-spacing: 8px;
  line-height: 1;
}

.product-card-body {
  padding: 28px;
}

.product-slogan {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
}

.product-card-body > p {
  font-size: .875rem;
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 20px;
}

.product-items {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.product-items span {
  padding: 4px 12px;
  background: rgba(36,83,63,.05);
  border-radius: 6px;
  font-size: .8rem;
  color: var(--primary);
  font-weight: 500;
}

/* ---------- Health (大健康) ---------- */
.health {
  background: linear-gradient(160deg, #1a4030 0%, #24533f 40%, #2d6a4f 100%);
  position: relative;
  overflow: hidden;
}

.health-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 100%, rgba(226,193,133,.08) 0%, transparent 60%);
}

.health .container { position: relative; z-index: 1; }

.health-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}

.health-card {
  padding: 36px 24px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius);
  text-align: center;
  backdrop-filter: blur(8px);
  transition: var(--transition);
}

.health-card:hover {
  background: rgba(255,255,255,.14);
  transform: translateY(-4px);
}

.health-card-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.health-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}

.health-card p {
  font-size: .85rem;
  color: rgba(255,255,255,.65);
  line-height: 1.7;
}

.health-categories {
  text-align: center;
}

.health-categories h3 {
  font-size: 1.1rem;
  color: var(--gold);
  margin-bottom: 24px;
  font-weight: 600;
}

.health-cat-list {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.health-cat-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 100px;
  color: rgba(255,255,255,.8);
  font-size: .875rem;
  transition: var(--transition);
}

.health-cat-item:hover {
  background: rgba(226,193,133,.15);
  border-color: var(--gold);
  color: var(--gold-light);
}

.cat-icon { font-size: 1.1rem; }

/* ---------- Data / Strength ---------- */
.data { background: #fff; }

.data-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.data-card {
  text-align: center;
  padding: 40px 20px;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.data-card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow);
}

.data-value {
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: 8px;
}

.data-label {
  font-size: .875rem;
  color: var(--text-sub);
}

.cert-strip {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  padding: 32px;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.cert-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .875rem;
  font-weight: 500;
  color: var(--text);
}

.cert-icon { font-size: 1.3rem; }

/* ---------- Responsibility ---------- */
.responsibility { background: var(--bg); }

.resp-content {
  max-width: 900px;
  margin: 0 auto;
}

.resp-main {
  text-align: center;
  margin-bottom: 48px;
}

.resp-icon-big { font-size: 3rem; margin-bottom: 16px; }

.resp-main h3 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 16px;
}

.resp-lead {
  font-size: 1.05rem;
  color: var(--text-sub);
  line-height: 1.9;
  max-width: 680px;
  margin: 0 auto;
}

.resp-lead strong { color: var(--primary); }

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

.resp-card {
  text-align: center;
  padding: 32px 24px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
}

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

.resp-card-icon { font-size: 2rem; margin-bottom: 12px; }

.resp-card h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.resp-card p {
  font-size: .85rem;
  color: var(--text-sub);
}

/* ---------- Vision ---------- */
.vision {
  padding: 120px 0;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  position: relative;
  text-align: center;
}

.vision-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(226,193,133,.1) 0%, transparent 50%);
}

.vision .container { position: relative; z-index: 1; }

.vision-tag {
  display: inline-block;
  font-size: .75rem;
  letter-spacing: 3px;
  color: var(--gold-light);
  margin-bottom: 16px;
  text-transform: uppercase;
}

.vision h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 20px;
}

.vision-slogan {
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  color: var(--gold);
  font-weight: 700;
  letter-spacing: 4px;
  margin-bottom: 12px;
}

.vision-en {
  font-family: 'Playfair Display', serif;
  font-size: 1rem;
  color: rgba(255,255,255,.45);
  font-style: italic;
}

/* ---------- Contact ---------- */
.contact { background: #fff; }

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

.contact-card {
  text-align: center;
  padding: 36px 20px;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.contact-card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow);
}

.contact-icon { font-size: 2rem; margin-bottom: 12px; }

.contact-card h4 {
  font-size: .95rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.contact-card p {
  font-size: .875rem;
  color: var(--text-sub);
}

/* ---------- Footer ---------- */
.footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,.7);
  padding: 48px 0 32px;
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 28px;
  border-bottom: 1px solid rgba(255,255,255,.1);
  margin-bottom: 24px;
}

.footer-logo {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-logo-img {
  height: 28px;
  width: auto;
  filter: brightness(0) invert(1);
}

.footer-brand p {
  font-size: .8rem;
  color: rgba(255,255,255,.4);
  margin-top: 4px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-size: .85rem;
  transition: var(--transition);
}

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

.footer-bottom {
  text-align: center;
  font-size: .8rem;
  color: rgba(255,255,255,.35);
}

/* ---------- Reveal Animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity .7s cubic-bezier(.4,0,.2,1), transform .7s cubic-bezier(.4,0,.2,1);
}

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

.reveal.delay-1 { transition-delay: .15s; }
.reveal.delay-2 { transition-delay: .3s; }
.reveal.delay-3 { transition-delay: .45s; }
.reveal.delay-4 { transition-delay: .6s; }

/* Hero animations */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  animation: fadeUp .8s ease forwards;
}

.delay-1 { animation-delay: .2s; }
.delay-2 { animation-delay: .4s; }
.delay-3 { animation-delay: .6s; }
.delay-4 { animation-delay: .8s; }

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

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .products-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .health-grid { grid-template-columns: repeat(2, 1fr); }
  .data-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .resp-cards { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
}

@media (max-width: 768px) {
  html { font-size: 15px; }
  .section { padding: 72px 0; }

  .nav-links {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,255,255,.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 24px;
    gap: 0;
  }

  .nav-links.open { display: flex; }

  .nav-links a {
    padding: 14px 16px;
    font-size: 1rem;
    border-bottom: 1px solid var(--border);
    border-radius: 0;
  }

  .nav-toggle { display: flex; }
  .nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

  .chain-timeline { padding-left: 48px; }
  .chain-timeline::before { left: 19px; }
  .step-number { left: -48px; width: 32px; height: 32px; font-size: .65rem; }
  .chain-step { padding: 20px; flex-direction: column; gap: 12px; }
  .chain-step:hover { transform: translateX(4px); }

  .health-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto 48px; }
  .health-cat-list { gap: 10px; }
  .health-cat-item { padding: 8px 16px; font-size: .8rem; }

  .data-grid { grid-template-columns: repeat(2, 1fr); }
  .data-value { font-size: 2rem; }

  .contact-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }

  .footer-top { flex-direction: column; gap: 20px; text-align: center; }
  .footer-links { flex-wrap: wrap; justify-content: center; gap: 16px; }

  .about-highlights { gap: 20px; }
  .highlight-num { font-size: 1.6rem; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 2rem; }
  .hero-dot { margin: 0 6px; }
  .hero-tags { gap: 8px; }
  .tag { padding: 4px 14px; font-size: .7rem; }
  .about-highlights { flex-direction: column; align-items: center; }
}