/* ============================================================
   峰悦户外 · 全站样式  —  小米汽车风格重构版
   ============================================================ */

/* ── 设计规范变量 ── */
:root {
  --primary:     #C3D600;   /* 荧光黄绿 · 品牌主色 */
  --primary-d:   #9AAA00;
  --primary-l:   #D9EA4D;
  --primary-glow:rgba(195,214,0,.35);
  --primary-on:  #0D0F00;   /* 主色背景上的文字 */

  --bg:          #0A0A0A;   /* 页面背景 · 极深黑 */
  --bg-card:     #111111;   /* 卡片背景 */
  --bg-card2:    #181818;   /* 卡片背景备用 */
  --bg-glass:    rgba(255,255,255,.04);   /* 毛玻璃底色 */
  --border:      rgba(255,255,255,.08);
  --border-hl:   rgba(195,214,0,.3);

  --text:        #F0F0F0;
  --text2:       #A0A0A0;
  --text3:       #606060;
  --white:       #FFFFFF;

  --nav-h:       64px;
  --radius:      12px;
  --radius-lg:   20px;
  --transition:  .35s cubic-bezier(.4,0,.2,1);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: -apple-system, 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }
ul, ol { list-style: none; }

/* ── 滚动条 ── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 2px; }

/* ============================================================
   导航
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  padding: 0 48px;
  transition: background var(--transition), box-shadow var(--transition), backdrop-filter var(--transition);
}
.nav.scrolled {
  background: rgba(10,10,10,.5);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  box-shadow: 0 1px 0 var(--border);
}
.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--white);
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-logo span.accent { color: var(--primary); }
.nav-logo-img {
  height: 36px;
  width: auto;
  display: block;
  object-fit: contain;
}
.nav-logo .logo-mark {
  width: 34px; height: 34px;
  background: var(--primary);
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: .85rem;
  font-weight: 800;
  color: var(--primary-on);
  letter-spacing: 0;
  flex-shrink: 0;
}
/* 英雄区 eyebrow logo */
.hero-logo-img {
  height: 80px;
  width: auto;
  object-fit: contain;
  display: block;
  filter: brightness(0) invert(1);
}
/* 页脚 logo 图片 */
.footer-logo-img {
  height: 40px;
  width: auto;
  display: block;
  object-fit: contain;
  margin-bottom: 4px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}
.nav-links a {
  padding: 6px 16px;
  font-size: .9rem;
  color: var(--text2);
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
}
.nav-links a:hover, .nav-links a.active {
  color: var(--white);
  background: rgba(255,255,255,.07);
}
.nav-links a.active { color: var(--primary); }
.nav-cta {
  margin-left: 16px;
  padding: 8px 22px;
  background: var(--primary);
  color: var(--primary-on) !important;
  border-radius: 999px;
  font-weight: 600;
  font-size: .875rem;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition) !important;
}
.nav-cta:hover {
  background: var(--primary-l) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--primary-glow) !important;
}

/* ── 语言切换 ── */
.lang-switcher {
  display: flex;
  gap: 4px;
  margin-left: 12px;
}
.lang-btn {
  padding: 4px 10px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text2);
  font-size: .75rem;
  font-weight: 600;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition);
}
.lang-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.lang-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--primary-on);
}
.lang-switcher-mobile {
  margin: 12px 16px 0;
}

/* ── 汉堡 ── */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  margin-left: auto;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── 移动端菜单 ── */
.nav-mobile {
  display: none;
  position: fixed;
  top: var(--nav-h); left: 0; right: 0;
  background: rgba(10,10,10,.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px 24px;
  z-index: 999;
}
.nav-mobile.open { display: block; }
.nav-mobile a {
  display: block;
  padding: 14px 16px;
  font-size: 1rem;
  color: var(--text2);
  border-radius: 8px;
  transition: var(--transition);
}
.nav-mobile a:hover, .nav-mobile a.active {
  color: var(--primary);
  background: rgba(195,214,0,.07);
}

/* ============================================================
   通用区块
   ============================================================ */
.section { padding: 120px 0; }
.section-sm { padding: 80px 0; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 48px; }
.container-wide { max-width: 1400px; margin: 0 auto; padding: 0 48px; }

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 16px;
}
.section-label::before {
  content: '';
  display: block;
  width: 20px; height: 2px;
  background: var(--primary);
  border-radius: 1px;
}
.section-title {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1.15;
  color: var(--white);
}
.section-title .hl { color: var(--primary); }
.section-desc {
  font-size: 1.05rem;
  color: var(--text2);
  line-height: 1.8;
  max-width: 560px;
}
.text-center { text-align: center; }
.text-center .section-desc { margin: 0 auto; }
.text-center .section-label { margin-left: auto; margin-right: auto; }

/* ── 分隔线 ── */
.divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

/* ============================================================
   按钮
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 999px;
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-align: center;
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: var(--primary-on);
}
/* ── 探索产品按钮悬停呼吸动画 ── */
@keyframes btn-flash {
  0%, 100% {
    box-shadow: 0 8px 24px rgba(195,214,0,.15), 0 0 0 0 rgba(195,214,0,0);
    transform: translateY(-2px);
  }
  30%, 70% {
    box-shadow: 0 8px 48px rgba(195,214,0,.5), 0 0 32px 8px rgba(195,214,0,.2);
    transform: translateY(-4px) scale(1.02);
  }
}

.hero .btn-primary {
  animation: btn-flash 2.4s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.hero .btn-primary:hover {
  animation: btn-flash 2.4s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  animation-play-state: paused;
  box-shadow: 0 8px 40px rgba(195,214,0,.45), 0 0 24px 8px rgba(195,214,0,.25);
  transform: translateY(-2px);
}

.btn-primary:hover {
  background: var(--primary-l);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--primary-glow);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255,255,255,.25);
}
.btn-outline:hover {
  background: rgba(255,255,255,.07);
  border-color: rgba(255,255,255,.5);
  transform: translateY(-2px);
}
.btn-ghost {
  background: transparent;
  color: var(--text2);
  padding: 10px 20px;
  font-size: .875rem;
}
.btn-ghost:hover { color: var(--white); }
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }

/* ============================================================
   英雄区 · 首页
   ============================================================ */
.hero {
  min-height: calc(85vh - 180px);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: #000;
}

/* 轮播 → 视频背景 */
.hero-video {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  min-width: 100%; min-height: 100%;
  width: auto; height: auto;
  object-fit: cover;
  z-index: 0;
}
.hero-slide {
  position: absolute;
  top:0; left:0; right:0; bottom:0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  transition: opacity 1.5s ease-in-out;
}
.hero-slide.active {
  opacity: 1;
}
.hero-overlay {
  position: absolute;
  top:0; left:0; right:0; bottom:0;
  z-index: 1;
  background:
    linear-gradient(to bottom,
      rgba(10,10,10,.35) 0%,
      rgba(10,10,10,.1)  40%,
      rgba(10,10,10,.55) 80%,
      rgba(10,10,10,.95) 100%);
}
.hero-dots {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  gap: 8px;
}
/* 播放按钮 */
.hero-play-btn {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  z-index: 4;
  width: 72px; height: 72px;
  cursor: pointer;
  transition: opacity .35s, transform .35s;
  filter: drop-shadow(0 4px 24px rgba(0,0,0,.6));
}
.hero-play-btn:hover { transform: translate(-50%, -50%) scale(1.08); }
.hero-play-btn svg { width: 100%; height: 100%; }
.hero-play-btn.hidden { opacity: 0; pointer-events: none; }
.hero-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,.3);
  cursor: pointer;
  transition: all .3s;
}
.hero-dot.active {
  background: var(--primary);
  transform: scale(1.2);
}

.hero-content {
  position: relative;
  z-index: 5;
  text-align: center;
  max-width: 900px;
  padding: 0 24px;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  background: transparent;
  border: none;
  padding: 0;
  margin-bottom: 32px;
}
.hero-eyebrow span.dot {
  width: 6px; height: 6px;
  background: var(--primary);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50%      { opacity: .5; transform: scale(.7); }
}
.hero-title {
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 800;
  letter-spacing: -.04em;
  line-height: 1.05;
  color: var(--white);
  margin-bottom: 24px;
}
.hero-title .line2 {
  display: block;
  background: linear-gradient(135deg, var(--primary), var(--primary-l));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
/* slogan 图片替换标题 */
.hero-slogan-img {
  display: block;
  width: min(680px, 90vw);
  height: auto;
  margin: 0 auto 28px;
  filter: brightness(0) invert(1);
}
.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text2);
  line-height: 1.7;
  max-width: 600px;
  margin: 0 auto 48px;
}
.hero-subtitle-green { color: var(--primary); }
.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ── 统计数字横幅 ── */
.hero-stats {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  border-top: 1px solid var(--border);
  background: rgba(10,10,10,.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  z-index: 3;
}
.hero-stat {
  padding: 28px;
  text-align: center;
  border-right: 1px solid var(--border);
  transition: background var(--transition);
}
.hero-stat:last-child { border-right: none; }
.hero-stat:hover { background: rgba(195,214,0,.04); }
.hero-stat .num {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -.04em;
  color: var(--white);
  line-height: 1;
}
.hero-stat .num .unit {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--primary);
  vertical-align: super;
}
.hero-stat .label {
  font-size: .8rem;
  color: var(--text3);
  margin-top: 6px;
  letter-spacing: .04em;
}

/* ============================================================
   优势特性区
   ============================================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: 64px;
}
.feature-item {
  background: var(--bg-card);
  padding: 40px 32px;
  transition: background var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-item::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-l));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s cubic-bezier(.4,0,.2,1);
}
.feature-item:hover { background: var(--bg-card2); }
.feature-item:hover::after { transform: scaleX(1); }
.feature-icon {
  width: 48px; height: 48px;
  background: rgba(195,214,0,.12);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 24px;
  font-size: 1.4rem;
  transition: var(--transition);
}
.feature-item:hover .feature-icon {
  background: rgba(195,214,0,.2);
  box-shadow: 0 0 20px var(--primary-glow);
}
.feature-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}
.feature-desc {
  font-size: .875rem;
  color: var(--text2);
  line-height: 1.7;
}

/* ============================================================
   产品展示区（首页预览）
   ============================================================ */
.products-preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 64px;
}
.product-card-preview {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  cursor: pointer;
}
.product-card-preview:hover {
  transform: translateY(-6px);
  border-color: var(--border-hl);
  box-shadow: 0 20px 60px rgba(0,0,0,.5), 0 0 0 1px var(--border-hl);
}
.product-card-img {
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  position: relative;
  overflow: hidden;
}
.product-card-img::after {
  content: '';
  position: absolute;
  top:0; left:0; right:0; bottom:0;
  background: linear-gradient(to bottom, transparent 50%, rgba(0,0,0,.6));
}
.product-card-body {
  padding: 24px;
}
.product-tag {
  display: inline-block;
  padding: 3px 10px;
  background: rgba(195,214,0,.12);
  border: 1px solid rgba(195,214,0,.25);
  color: var(--primary);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  border-radius: 4px;
  margin-bottom: 10px;
}
.product-card-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 6px;
}
.product-card-desc {
  font-size: .85rem;
  color: var(--text2);
  margin-bottom: 16px;
  line-height: 1.6;
}
.product-card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.product-price {
  font-size: .85rem;
  color: var(--text2);
}
.product-price strong {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary);
  margin-right: 2px;
}
.product-link {
  font-size: .8rem;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition);
}
.product-link:hover { gap: 8px; }

/* ============================================================
   数字统计横幅
   ============================================================ */
.stats-band {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.stats-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.stat-item {
  padding: 60px 40px;
  text-align: center;
  border-right: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.stat-item::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0;
  transition: opacity .4s;
}
.stat-item:hover::before { opacity: 1; }
.stat-item:last-child { border-right: none; }
.stat-num {
  font-size: 3.5rem;
  font-weight: 800;
  letter-spacing: -.05em;
  color: var(--white);
  line-height: 1;
  margin-bottom: 12px;
}
.stat-num .suf {
  font-size: 1.8rem;
  color: var(--primary);
  font-weight: 700;
}
.stat-label {
  font-size: .9rem;
  color: var(--text2);
}

/* ============================================================
   评价区
   ============================================================ */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 64px;
}
.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: border-color var(--transition), transform var(--transition);
}
.review-card:hover {
  border-color: var(--border-hl);
  transform: translateY(-4px);
}
.review-stars {
  display: flex;
  gap: 3px;
  margin-bottom: 16px;
  color: var(--primary);
  font-size: 1rem;
}
.review-text {
  font-size: .9rem;
  color: var(--text2);
  line-height: 1.8;
  margin-bottom: 20px;
}
.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.review-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-d));
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  font-size: .95rem;
  color: var(--primary-on);
  flex-shrink: 0;
}
.review-name { font-size: .9rem; font-weight: 600; color: var(--white); }
.review-meta { font-size: .78rem; color: var(--text3); }

/* ============================================================
   CTA 区
   ============================================================ */
.cta-section {
  background: linear-gradient(135deg, #0D0F00 0%, #161A00 50%, #0A0A0A 100%);
  border-top: 1px solid var(--border-hl);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -50%; left: 50%;
  transform: translateX(-50%);
  width: 800px; height: 400px;
  background: radial-gradient(ellipse, rgba(195,214,0,.12) 0%, transparent 70%);
}
.cta-inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}
.cta-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.2;
  color: var(--white);
}
.cta-title .hl { color: var(--primary); }
.cta-desc { font-size: .95rem; color: var(--text2); margin-top: 12px; max-width: 400px; }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ============================================================
   页脚
   ============================================================ */
.footer {
  background: #050505;
  border-top: 1px solid var(--border);
  padding: 80px 0 40px;
}
/* ── 页脚网格：第1列（Logo+二维码）永不压缩 ── */
.footer-grid {
  display: grid;
  grid-template-columns: minmax(380px, auto) 1fr;
  gap: 40px;
  margin-bottom: 60px;
}
/* 英文状态：页脚居中 */
[lang="en"] .footer-grid {
  margin: 0 auto 60px;
  max-width: 1200px;
}
/* 二维码图片永远正方形 */
.footer-qr-item img {
  width: 108px;
  height: 108px;
  border-radius: 8px;
  object-fit: cover;
  background: #fff;
  padding: 4px;
  aspect-ratio: 1 / 1;
  flex-shrink: 0;
}
.footer-brand .brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 16px;
}
.footer-brand .brand-logo .logo-mark {
  width: 30px; height: 30px;
  background: var(--primary);
  border-radius: 5px;
  display: flex; align-items: center; justify-content: center;
  font-size: .78rem;
  font-weight: 800;
  color: var(--primary-on);
}
.footer-brand .brand-logo span.accent { color: var(--primary); }
.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 20px;
}
.footer-tagline {
  font-size: .875rem;
  color: var(--text3);
  line-height: 1.7;
  margin-bottom: 24px;
}
.footer-qr {
  display: flex;
  gap: 16px;
  margin-top: 16px;
}
.footer-qr-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.footer-qr-item span {
  font-size: .72rem;
  color: var(--text3);
  white-space: nowrap;
}
.footer-social { display: flex; gap: 12px; }
.social-icon {
  width: 36px; height: 36px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: .9rem;
  transition: var(--transition);
}
.social-icon:hover {
  background: rgba(195,214,0,.1);
  border-color: var(--border-hl);
}
.footer-col h4 {
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 20px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a {
  font-size: .875rem;
  color: var(--text2);
  transition: color var(--transition);
}
.footer-col ul li a:hover { color: var(--primary); }

/* ── 页脚产品系列：4列Grid表格布局（竖排：先列后行）── */
.footer-series-wrap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(4, auto);
  grid-auto-flow: column;
  gap: 8px 24px;
}
.footer-series-wrap a {
  font-size: .82rem;
  color: var(--text2);
  transition: color var(--transition);
  white-space: nowrap;
  line-height: 1.8;
}
.footer-series-wrap a:hover { color: var(--primary); }
.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
}
.footer-contact-item .ico { font-size: .95rem; margin-top: 2px; flex-shrink: 0; }
.footer-contact-item span { font-size: .85rem; color: var(--text2); line-height: 1.5; }
.footer-copy { font-size: .8rem; color: var(--text3); }
.footer-legal { display: flex; gap: 20px; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-copy { font-size: .8rem; color: var(--text3); }
.footer-legal a { font-size: .8rem; color: var(--text3); transition: color var(--transition); }
.footer-legal a:hover { color: var(--text2); }

/* ============================================================
   关于页 · 英雄区
   ============================================================ */
.page-hero {
  min-height: 28vh;
  display: flex;
  align-items: flex-end;
  padding-bottom: 48px;
  position: relative;
  overflow: hidden;
  background: #000;
}

/* ── 产品页固定背景 ── */
.page-hero-fixed {
  background: url('hero-imgs/all-products.jpg') center center / cover no-repeat;
}

/* ── 渐变遮罩层 ── */
.page-hero-overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 1;
  background: linear-gradient(to bottom,
    rgba(0,0,0,.35) 0%,
    rgba(0,0,0,.1)  40%,
    rgba(0,0,0,.55) 80%,
    rgba(0,0,0,.85) 100%);
  pointer-events: none;
}

/* ── 内容层 ── */
.page-hero-content {
  position: relative;
  z-index: 2;
  padding-top: calc(var(--nav-h) + 55px);
  text-align: left;
}
.page-hero-eyebrow {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.page-hero-eyebrow::before {
  content: '';
  display: block;
  width: 32px; height: 2px;
  background: var(--primary);
  border-radius: 1px;
}
.page-hero-title {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 800;
  letter-spacing: -.04em;
  line-height: 1.1;
  color: var(--white);
  margin-bottom: 24px;
}
/* "都是极致对生活的致敬" 绿色细体 */
.page-hero-title .hl { 
  color: var(--primary); 
  font-weight: 300; 
}
.page-hero-desc {
  font-size: 1.1rem;
  color: var(--text2);
  max-width: 100%;
  line-height: 1.75;
  margin-top: -20px;
  margin-left: 5px;
}

/* ============================================================
   关于页 · 时间轴
   ============================================================ */
.timeline {
  position: relative;
  margin-top: 80px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--border) 10%, var(--border) 90%, transparent);
  transform: translateX(-50%);
}
.timeline-item {
  display: grid;
  grid-template-columns: 1fr 60px 1fr;
  align-items: start;
  margin-bottom: 60px;
  position: relative;
}
.timeline-item:nth-child(odd) .timeline-content { grid-column: 1; text-align: right; padding-right: 48px; }
.timeline-item:nth-child(odd) .timeline-dot    { grid-column: 2; }
.timeline-item:nth-child(even) .timeline-content { grid-column: 3; padding-left: 48px; }
.timeline-item:nth-child(even) .timeline-dot   { grid-column: 2; }
.timeline-dot {
  grid-row: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}
.timeline-dot::before {
  content: '';
  width: 12px; height: 12px;
  background: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(195,214,0,.2);
}
.timeline-content { grid-row: 1; }
.timeline-year {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--primary);
  margin-bottom: 8px;
}
.timeline-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}
.timeline-desc {
  font-size: .9rem;
  color: var(--text2);
  line-height: 1.7;
}

/* ── 资质认证卡片 ── */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 60px;
}
.cert-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: border-color var(--transition), transform var(--transition);
}
.cert-card:hover {
  border-color: var(--border-hl);
  transform: translateY(-4px);
}
.cert-icon {
  width: 56px; height: 56px;
  background: rgba(195,214,0,.1);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}
.cert-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}
.cert-desc {
  font-size: .85rem;
  color: var(--text2);
  line-height: 1.7;
}

/* ── 关于页 CTA ── */
.about-cta {
  background: linear-gradient(135deg, #0D0F00 0%, #161A00 50%, #0A0A0A 100%);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-hl);
  padding: 80px 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  margin-top: 80px;
}
.about-cta-title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -.03em;
  color: var(--white);
  margin-bottom: 12px;
}
.about-cta-title .hl { color: var(--primary); }
.about-cta-desc {
  font-size: 1rem;
  color: var(--text2);
  max-width: 500px;
}

/* ============================================================
   产品页 · 产品网格
   ============================================================ */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 48px;
}
.filter-btn {
  padding: 8px 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text2);
  font-size: .85rem;
  font-weight: 500;
  border-radius: 999px;
  cursor: pointer;
  transition: all var(--transition);
  width: 100px;
  text-align: center;
}
.filter-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.filter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--primary-on);
}

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

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition), opacity .5s ease;
}
.product-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-hl);
  box-shadow: 0 20px 60px rgba(0,0,0,.4), 0 0 0 1px var(--border-hl);
}
.product-card[style*="display: none"] {
  opacity: 0;
  transform: scale(.95);
}
.product-card.visible {
  opacity: 1;
  transform: scale(1);
}
.product-img {
  aspect-ratio: 1/1;
  width: 100%;
  object-fit: cover;
}
.product-body { padding: 24px; }
.product-series {
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 8px;
}
.product-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}
.product-name .spec-label {
  font-size: .72rem;
  font-weight: 400;
  color: var(--text3);
}
.product-desc-text {
  font-size: .82rem;
  color: var(--text2);
  line-height: 1.6;
  margin-bottom: 16px;
}
.product-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 12px 0 0;
  border-top: 1px solid var(--border);
  margin-bottom: 0;
}
.product-spec-item {
  width: calc(33.333% - 8px);
  font-size: .72rem;
  color: var(--text3);
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.product-spec-item strong {
  font-size: .88rem;
  font-weight: 700;
  color: var(--text);
}
.product-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.product-price {
  font-size: .8rem;
  color: var(--text2);
}
.product-price strong {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
  margin-right: 2px;
}
.product-link {
  font-size: .78rem;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition);
}
.product-link:hover { gap: 8px; }

/* ── 产品卡片底部"查看更多" ── */
.product-card-more {
  margin-top: 37px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  text-align: center;
}
.product-card-more a {
  color: var(--primary);
  font-size: .82rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition);
}
.product-card-more a:hover { gap: 8px; }

/* ── 淡入动画 ── */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-in-delay-1 { transition-delay: .1s; }
.fade-in-delay-2 { transition-delay: .2s; }
.fade-in-delay-3 { transition-delay: .3s; }

/* ============================================================
   OEM/ODM 服务区
   ============================================================ */
.oem-section {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.oem-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.oem-label {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 16px;
}
.oem-title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.15;
  color: var(--white);
  margin-bottom: 20px;
}
.oem-title .hl { color: var(--primary); }
.oem-desc {
  font-size: .95rem;
  color: var(--text2);
  line-height: 1.8;
  margin-bottom: 32px;
}
.oem-features {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 32px;
}
.oem-feat {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.oem-feat-icon {
  width: 44px; height: 44px;
  background: rgba(195,214,0,.1);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.oem-feat-text h4 {
  font-size: .95rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 4px;
}
.oem-feat-text p {
  font-size: .82rem;
  color: var(--text2);
  line-height: 1.6;
}
.oem-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.oem-stat-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  transition: border-color var(--transition);
}
.oem-stat-card:hover { border-color: var(--border-hl); }
.oem-stat-num {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -.04em;
  color: var(--primary);
  margin-bottom: 8px;
}
.oem-stat-label {
  font-size: .78rem;
  color: var(--text3);
}

/* ============================================================
   联系页
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  margin-top: 60px;
}
.contact-info-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}
.contact-info-item:last-child { border-bottom: none; }
.contact-info-icon {
  width: 44px; height: 44px;
  background: rgba(195,214,0,.1);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.contact-info-label {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 4px;
}
.contact-info-value {
  font-size: .95rem;
  color: var(--white);
  line-height: 1.5;
}
.contact-info-sub {
  font-size: .78rem;
  color: var(--text3);
  margin-top: 2px;
}

.contact-form-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.contact-form-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}
.contact-form-subtitle {
  font-size: .9rem;
  color: var(--text2);
  margin-bottom: 32px;
}
.form-group {
  margin-bottom: 20px;
}
.form-label {
  display: block;
  font-size: .8rem;
  font-weight: 600;
  color: var(--text2);
  margin-bottom: 8px;
}
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: .9rem;
  font-family: inherit;
  transition: border-color var(--transition);
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary);
}
.form-textarea {
  resize: vertical;
  min-height: 120px;
}
.form-submit {
  width: 100%;
  margin-top: 8px;
}
.form-success {
  display: none;
  text-align: center;
  padding: 40px;
}
.form-success.show { display: block; }
.form-success-icon {
  font-size: 4rem;
  margin-bottom: 16px;
}
.form-success h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}
.form-success p {
  font-size: .9rem;
  color: var(--text2);
}

/* ── 会员登录 ── */
.login-wrap {
  display: flex;
  justify-content: center;
  margin-top: 60px;
}
.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 48px 40px;
  width: 100%;
  max-width: 440px;
}
.login-header {
  text-align: center;
  margin-bottom: 32px;
}
.login-icon {
  font-size: 2.4rem;
  margin-bottom: 12px;
}
.login-header h2 {
  font-size: 1.5rem;
  color: var(--text1);
  margin-bottom: 6px;
}
.login-header p {
  font-size: .85rem;
  color: var(--text2);
}
.login-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}
.login-remember {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .82rem;
  color: var(--text2);
  cursor: pointer;
}
.login-remember input { accent-color: var(--primary); }
.login-forget {
  font-size: .82rem;
  color: var(--primary);
  text-decoration: none;
}
.login-forget:hover { text-decoration: underline; }
.login-footer {
  text-align: center;
  margin-top: 20px;
  font-size: .85rem;
  color: var(--text2);
}
.login-footer a {
  color: var(--primary);
  text-decoration: none;
  margin-left: 4px;
}
.login-footer a:hover { text-decoration: underline; }

/* ── FAQ ── */
.faq-list {
  margin-top: 60px;
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  cursor: pointer;
  transition: color var(--transition);
}
.faq-question:hover { color: var(--primary); }
.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--primary);
  transition: transform .3s;
}
.faq-item.open .faq-question::after { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease, padding .3s ease;
}
.faq-item.open .faq-answer {
  max-height: 200px;
  padding-bottom: 24px;
}
.faq-answer p {
  font-size: .9rem;
  color: var(--text2);
  line-height: 1.8;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
  .container { padding: 0 32px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: repeat(3, 1fr); }
  .reviews-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-brand { align-items: flex-start; }
  .oem-inner { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .certs-grid { grid-template-columns: repeat(2, 1fr); }
  .about-cta { flex-direction: column; text-align: center; }
}

@media (max-width: 768px) {
  :root { --nav-h: 56px; }
  .container { padding: 0 20px; }
  .nav { padding: 0 20px; }
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .hero-stat:nth-child(2) { border-right: none; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .reviews-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .stat-item { padding: 40px 20px; }
  .stat-num { font-size: 2.5rem; }
  .oem-visual { grid-template-columns: 1fr; }
  .certs-grid { grid-template-columns: 1fr; }
  .about-cta { padding: 48px 24px; }
  .page-hero { min-height: 45vh; padding-bottom: 60px; }
  .filter-bar { gap: 6px; }
  .filter-btn { padding: 6px 4px; font-size: .78rem; width: 90px; }
  .timeline-item { grid-template-columns: 1fr; }
  .timeline-item:nth-child(odd) .timeline-content,
  .timeline-item:nth-child(even) .timeline-content {
    grid-column: 1;
    text-align: left;
    padding: 0 0 0 24px;
  }
  .timeline-item:nth-child(odd) .timeline-dot,
  .timeline-item:nth-child(even) .timeline-dot { grid-column: 1; grid-row: auto; }
}

@media (max-width: 480px) {
  .hero-title { font-size: clamp(2rem, 10vw, 3rem); }
  .hero-stats { grid-template-columns: 1fr; }
  .hero-stat { border-right: none; border-bottom: 1px solid var(--border); }
  .products-grid { grid-template-columns: 1fr; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .about-cta { padding: 48px 24px; }
  .page-hero-title { font-size: clamp(2rem, 8vw, 3rem); }
}