/* ============================================
   天度智云 · 品牌科技风格（全面升级版 v2）
   ============================================ */

:root {
  
  --brand-50:  #EEF3FF;
  --brand-100: #D6E3FF;
  --brand-200: #B3CCFF;
  --brand-300: #80ADFF;
  --brand-400: #4D8CFF;
  --brand-500: #1A6CFF;
  --brand-600: #0055FF;
  --brand-700: #0040CC;
  --brand-800: #002E99;
  --brand-900: #001B66;

  
  --accent-300: #4DE1FF;
  --accent-400: #00C8FF;
  --accent-500: #00A8E8;

  
  --status-success: #22c55e;

  
  --illus-sky:       #0ea5e9;
  --illus-indigo:    #1A6CFF;
  --illus-purple:    #1A6CFF;
  --illus-amber:     #f59e0b;
  --illus-amber-lt:  #fbbf24;
  --illus-amber-dk:  #d97706;
  --illus-emerald:   #10b981;
  --illus-pink:      #ec4899;
  --illus-red:       #ef4444;

  
  --gray-0:  #FFFFFF;
  --gray-50: #F8FAFF;
  --gray-100:#F0F5FF;
  --gray-200:#E2E8F5;
  --gray-300:#CBD5E8;
  --gray-400:#94A3B8;
  --gray-500:#64748B;
  --gray-600:#475569;
  --gray-700:#334155;
  --gray-800:#1E293B;
  --gray-900:#0F172A;

  
  --dark-bg:     #070B14;
  --dark-surface:#0F1623;
  --dark-border: rgba(255,255,255,0.06);
  --dark-text:   #F0F4F8;
  --dark-muted:  #8B95A5;

  
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 999px;

  
  --shadow-1: 0 1px 3px rgba(0,85,255,0.04), 0 1px 2px rgba(0,0,0,0.02);
  --shadow-2: 0 4px 12px rgba(0,85,255,0.06), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-3: 0 12px 32px rgba(0,85,255,0.08), 0 4px 8px rgba(0,0,0,0.06);
  --shadow-4: 0 24px 48px rgba(0,85,255,0.12), 0 8px 16px rgba(0,0,0,0.08);
  --shadow-glow: 0 0 20px rgba(0,85,255,0.25);
  --shadow-glow-sm: 0 0 12px rgba(0,85,255,0.15);

  
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);

  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --text-display: clamp(2.2rem, 5.5vw, 3.8rem);
  --text-hero-sub: clamp(1.8rem, 4vw, 2.6rem);
  --text-h1: clamp(1.75rem, 4vw, 2.75rem);
  --text-h2: clamp(1.5rem, 3.5vw, 2.25rem);
  --text-body: clamp(0.9rem, 1vw + 0.5rem, 1.05rem);
  --text-small: 0.78rem;

  
  --primary: var(--brand-600);
  --primary-light: var(--brand-400);
  --primary-dark: var(--brand-700);
  --accent: var(--accent-400);
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  font-family: var(--font-sans);
  color: var(--gray-900);
  background: var(--gray-0);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background .4s var(--ease-smooth), color .4s var(--ease-smooth);
}
body.dark {
  color: var(--dark-text);
  background: var(--dark-bg);
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

:focus-visible {
  outline: 2px solid var(--brand-600);
  outline-offset: 2px;
  border-radius: 2px;
}
body.dark :focus-visible { outline-color: var(--brand-400); }

.card-subpage {
  background: var(--gray-0);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  transition: transform .35s var(--ease-out), box-shadow .35s, border-color .3s;
  box-shadow: var(--shadow-1);
}
body.dark .card-subpage {
  background: var(--gray-800);
  border-color: var(--dark-border);
}
.card-subpage:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
  border-color: var(--brand-200);
}
body.dark .card-subpage:hover { border-color: rgba(0,85,255,.25); }

.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }

.navbar {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  padding: 1rem 0;
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  transition: background .35s var(--ease-smooth), box-shadow .35s var(--ease-smooth), padding .35s var(--ease-smooth), transform .35s var(--ease-smooth), backdrop-filter .35s var(--ease-smooth);
}
body.dark .navbar { background: rgba(7,11,20,0.7); }
.navbar.scrolled {
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow-2);
  padding: .55rem 0;
}
body.dark .navbar.scrolled {
  background: rgba(7,11,20,.96);
  box-shadow: 0 4px 12px rgba(0,0,0,.3);
}

.navbar.hidden {
  transform: translateY(-100%);
}

.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 2rem;
  display: flex; align-items: center; justify-content: space-between;
}
.logo { font-size: 1.25rem; font-weight: 700; color: var(--brand-600); display: flex; align-items: center; gap: .6rem; }
body.dark .logo { color: var(--brand-400); }
.logo-icon { width: 32px; height: 32px; flex-shrink: 0; }
.logo-img { height: 36px; width: auto; flex-shrink: 0; display: block; }

.nav-links { display: flex; gap: 1.4rem; }
.nav-links a {
  font-size: .86rem; font-weight: 500; color: var(--brand-700);
  transition: color .2s, background .2s; position: relative; padding: .3rem .55rem;
  border-radius: var(--radius-md);
}
body.dark .nav-links a { color: var(--brand-400); }
/* 顶层导航项：hover 与当前页加 pill 背景（padding 恒定，不产生位移） */
.nav-links a:hover, .nav-links a.active { color: var(--brand-700); background: var(--brand-50); }
body.dark .nav-links a:hover, body.dark .nav-links a.active { color: var(--dark-text); background: rgba(0,85,255,.12); }

.nav-dev-link {
  font-size: .85rem; font-weight: 700; color: #fff;
  padding: .5rem 1.1rem; border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--brand-600), var(--brand-700));
  box-shadow: 0 2px 6px rgba(0,85,255,.25);
  transition: transform .2s, box-shadow .2s, filter .2s;
}
.nav-dev-link:hover { background: linear-gradient(135deg, var(--brand-700), var(--brand-800)); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,85,255,.35); }
body.dark .nav-dev-link { color: #fff; background: linear-gradient(135deg, var(--brand-500), var(--brand-600)); }

.theme-toggle {
  width: 36px; height: 36px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--gray-600); transition: background .2s, color .2s, transform .2s; margin: 0 .5rem;
}
body.dark .theme-toggle { color: var(--dark-text); }
.theme-toggle:hover { background: var(--brand-50); transform: rotate(15deg); }
body.dark .theme-toggle:hover { background: rgba(0,85,255,.15); }
.theme-toggle svg { width: 18px; height: 18px; }
.icon-moon { display: none; }
body.dark .icon-sun { display: none; }
body.dark .icon-moon { display: block; }

.nav-cta {
  padding: .55rem 1.4rem; border-radius: var(--radius-md); font-size: .85rem; font-weight: 600;
  transition: transform .2s, box-shadow .2s;
}
.nav-cta-primary {
  background: linear-gradient(135deg, var(--brand-600), var(--brand-700)); color: #fff;
}
.nav-cta-primary:hover { transform: translateY(-1px); box-shadow: var(--shadow-glow); }
.nav-cta-primary:active { transform: translateY(0); box-shadow: none; }
.nav-cta-secondary {
  background: var(--brand-50); color: var(--brand-600);
  border: 1px solid var(--brand-200);
}
body.dark .nav-cta-secondary { background: rgba(0,85,255,.08); color: var(--brand-400); border-color: rgba(0,85,255,.2); }
.nav-cta-secondary:hover { background: var(--brand-100); }

.nav-mobile-only { display: none; }

.nav-dropdown { position: relative; }

.dropdown-toggle {
  font-size: .86rem; font-weight: 500; color: var(--brand-700);
  transition: color .2s, background .2s; position: relative; padding: .3rem .55rem;
  display: flex; align-items: center; gap: .3rem; cursor: pointer;
  border-radius: var(--radius-md);
}
body.dark .dropdown-toggle { color: var(--brand-400); }
/* 顶层下拉入口：hover 与当前页都加轻量 pill 背景 */
.dropdown-toggle:hover, .nav-dropdown:hover .dropdown-toggle { color: var(--brand-700); background: var(--brand-50); }
body.dark .dropdown-toggle:hover, body.dark .nav-dropdown:hover .dropdown-toggle { color: var(--dark-text); background: rgba(0,85,255,.12); }
/* 当前页激活态：brand 色 pill 背景 */
.nav-links a.active, .dropdown-toggle.active { background: var(--brand-100); color: var(--brand-700); }
body.dark .nav-links a.active, body.dark .dropdown-toggle.active { background: rgba(0,85,255,.18); color: #fff; }

.dropdown-arrow { transition: transform .3s var(--ease-spring); }
.nav-dropdown:hover .dropdown-arrow,
.mega-dropdown:hover .dropdown-arrow { transform: rotate(180deg); }

.dropdown-menu {
  position: absolute; top: calc(100% + .75rem); left: 50%;
  transform: translateX(-50%) translateY(8px) scale(.97);
  transform-origin: top center;
  /* 宽度由最长子项 + padding 决定（实测 5 字项约 102px），不再强制最小宽 */
  min-width: 0; padding: .4rem;
  background: rgba(255,255,255,.98);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-4);
  opacity: 0; visibility: hidden;
  transition: opacity .18s ease, transform .22s cubic-bezier(.16,.84,.44,1), visibility .22s;
  z-index: 1001; list-style: none;
}
/* bridge：覆盖顶级项到菜单之间的 12px 间隙，鼠标划过不失焦 */
.dropdown-menu::before {
  content: ''; position: absolute; top: -.75rem; left: 0; right: 0; height: .75rem;
}
body.dark .dropdown-menu {
  background: rgba(15,22,35,.98);
  border-color: var(--dark-border);
  box-shadow: 0 12px 40px rgba(0,0,0,.4);
}

.nav-dropdown.hover-intent .dropdown-menu {
  opacity: 1; visibility: visible;
  transform: translateX(-50%) translateY(0) scale(1);
}

.dropdown-menu li { margin: 0; }
.dropdown-menu li a {
  display: block; padding: .6rem 1rem; border-radius: var(--radius-md);
  font-size: .88rem; font-weight: 500; color: var(--gray-600);
  transition: all .18s, transform .18s ease; white-space: nowrap;
  /* 下划线：默认透明，hover 时显色（贴合文字宽度，不随容器走） */
  text-decoration: underline;
  text-decoration-color: transparent;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
  transition: all .18s, transform .18s ease, text-decoration-color .22s var(--ease-out);
}
body.dark .dropdown-menu li a { color: var(--dark-muted); }
/* 下拉项 hover：下划线 + 背景高亮 + 轻微右移（三重细腻反馈） */
.dropdown-menu li a:hover {
  background: var(--brand-50); color: var(--brand-700); transform: translateX(3px);
  text-decoration-color: var(--brand-600);
}
body.dark .dropdown-menu li a:hover { background: rgba(0,85,255,.15); color: var(--dark-text); text-decoration-color: var(--accent-300); }

@media (max-width: 768px) {
  .dropdown-arrow { transform: rotate(0deg); }
  .nav-dropdown.m-open .dropdown-arrow { transform: rotate(180deg); }
}

.mega-dropdown { position: relative; }
.mega-menu {
  position: absolute; top: calc(100% + .75rem); left: 50%;
  transform: translateX(-50%) translateY(8px) scale(.97);
  transform-origin: top center;
  min-width: 0; padding: .35rem .45rem;
  background: rgba(255,255,255,.98);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-4);
  opacity: 0; visibility: hidden;
  transition: opacity .18s ease, transform .22s cubic-bezier(.16,.84,.44,1), visibility .22s;
}
/* mega 分类横排：3 列紧凑条（Stripe/Linear 风格） */
.mega-menu-cats { display: grid; grid-template-columns: repeat(3, auto); gap: .2rem; }
.mega-menu-cats .mega-cat-link {
  width: auto; margin: 0; padding: .5rem .75rem;
  font-size: .85rem; font-weight: 600; white-space: nowrap;
}
.mega-menu-cats .mega-cat-link svg { width: 12px; height: 12px; }
/* mega bridge：同样消除鼠标路径间隙 */
.mega-menu::before {
  content: ''; position: absolute; top: -.75rem; left: 0; right: 0; height: .75rem;
}
body.dark .mega-menu {
  background: rgba(15,22,35,.98);
  border-color: var(--dark-border);
  box-shadow: 0 12px 40px rgba(0,0,0,.4);
}
.mega-dropdown.hover-intent .mega-menu {
  opacity: 1; visibility: visible;
  transform: translateX(-50%) translateY(0) scale(1);
}
.mega-col {
  flex: 1; min-width: 160px;
  padding: 0 .6rem;
  border-right: 1px solid var(--gray-200);
}
.mega-col:last-child { border-right: none; }
body.dark .mega-col { border-color: var(--dark-border); }
.mega-col-title {
  font-size: .78rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--brand-600); margin-bottom: .7rem; padding: 0 .5rem;
}
body.dark .mega-col-title { color: var(--brand-400); }
.mega-links { list-style: none; }
.mega-links li a {
  display: flex; align-items: center; gap: .5rem;
  padding: .55rem .8rem; border-radius: var(--radius-md);
  font-size: .88rem; font-weight: 500; color: var(--gray-600);
  transition: all .2s; white-space: nowrap;
}
.mega-links li a::before {
  content: '';
  width: 5px; height: 5px;
  min-width: 5px; border-radius: 50%;
  background: var(--brand-300);
  opacity: 0.45;
  transition: all .25s var(--ease-spring);
}
.mega-links li a:hover::before {
  opacity: 1;
  background: var(--brand-500);
  transform: scale(1.6);
  box-shadow: 0 0 6px rgba(0,85,255,0.35);
}
body.dark .mega-links li a { color: var(--dark-muted); }
.mega-links li a:hover {
  background: var(--brand-50); color: var(--brand-700);
}
body.dark .mega-links li a:hover {
  background: rgba(0,85,255,.15); color: var(--dark-text);
}
.badge-soon {
  font-size: .65rem; font-weight: 600; margin-left: auto;
  padding: .12rem .4rem; border-radius: 4px;
  background: rgba(245,158,11,.12); color: #d97706;
}
body.dark .badge-soon { background: rgba(245,158,11,.18); color: #fbbf24; }

.mega-menu { flex-wrap: wrap; }
.sales-filter-pill {
  display: inline-block; padding: .45rem 1.2rem; border-radius: 999px;
  font-size: .85rem; font-weight: 600; cursor: pointer; text-decoration: none;
  color: var(--gray-600); background: var(--gray-100); border: 1px solid var(--gray-200);
  transition: background .2s, color .2s;
}
body.dark .sales-filter-pill { color: var(--gray-300); background: var(--gray-800); border-color: var(--dark-border); }
.sales-filter-pill.active, .sales-filter-pill:hover { background: var(--brand-600); color: #fff; border-color: var(--brand-600); }
body.dark .sales-filter-pill.active { background: var(--brand-500); }

.sales-to-products {
  display: inline-block; padding: .6rem 1.6rem; border-radius: 999px;
  font-size: .88rem; font-weight: 600; text-decoration: none;
  color: var(--brand-700); background: var(--brand-50); border: 1px solid var(--brand-200);
  transition: background .2s, transform .15s;
}
body.dark .sales-to-products { color: var(--brand-300); background: rgba(0,85,255,.12); border-color: var(--brand-500); }
.sales-to-products:hover { transform: translateY(-1px); background: var(--brand-100); }

.cat-index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}
.cat-index-card {
  display: block; text-decoration: none;
  padding: 1.8rem 1.6rem; border-radius: 16px;
  background: var(--gray-50); border: 1px solid var(--gray-200);
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
body.dark .cat-index-card { background: var(--gray-800); border-color: var(--dark-border); }
.cat-index-card:hover {
  transform: translateY(-3px); border-color: var(--brand-600);
  box-shadow: 0 12px 30px -12px rgba(0,85,255,.25);
}
.cat-index-head { display: flex; align-items: center; gap: 1rem; margin-bottom: 1rem; }
.cat-index-link {
  display: inline-block; font-size: .9rem; font-weight: 600; color: var(--brand-600);
  margin-top: .4rem;
}
body.dark .cat-index-link { color: var(--brand-400); }

.mega-cat-link {
  display: flex; align-items: center; justify-content: space-between; gap: .6rem;
  width: 100%; box-sizing: border-box;
  margin: .2rem .6rem; padding: .85rem 1rem;
  border: 1px solid var(--gray-200); border-radius: var(--radius-md);
  font-size: .92rem; font-weight: 700; color: var(--gray-800);
  background: var(--gray-50);
  transition: background .2s, color .2s, border-color .2s, transform .15s;
}
.mega-cat-link svg { width: 14px; height: 14px; transition: transform .2s; }
.mega-cat-link:hover { background: var(--brand-50); border-color: var(--brand-300); color: var(--brand-700); transform: translateX(2px); }
.mega-cat-link:hover svg { transform: translateX(3px); }
body.dark .mega-cat-link { color: var(--gray-200); background: var(--gray-800); border-color: var(--dark-border); }
body.dark .mega-cat-link:hover { background: rgba(0,85,255,.15); border-color: var(--brand-500); color: var(--brand-300); }

.mega-all-link {
  width: 100%;
  box-sizing: border-box;
  display: flex; align-items: center; justify-content: center; gap: .4rem;
  margin: .5rem .6rem 0; padding: .7rem 1rem;
  border-top: 1px solid var(--gray-200);
  font-size: .9rem; font-weight: 700; color: var(--brand-700);
  border-radius: var(--radius-md);
  transition: background .2s, color .2s;
}
.mega-all-link svg { width: 14px; height: 14px; transition: transform .2s; }
.mega-all-link:hover { background: var(--brand-50); }
.mega-all-link:hover svg { transform: translateX(3px); }
body.dark .mega-all-link { color: var(--brand-300); border-color: var(--dark-border); }
body.dark .mega-all-link:hover { background: rgba(0,85,255,.15); }

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .qrcode-list { justify-content: center; }
}

@media (max-width: 768px) {
  .mega-menu {
    position: static; transform: none; opacity: 1; visibility: visible;
    box-shadow: none; border: none; background: transparent;
    flex-direction: column; gap: 0;
    min-width: auto; padding: 0 0 0 1rem; margin: 0;
    display: none;
  }
  body.dark .mega-menu { background: transparent; }
  .mega-dropdown.active .mega-menu { display: flex; }
  .mega-col {
    border-right: none;
    border-bottom: 1px solid var(--gray-200);
    padding: .5rem 0;
  }
  body.dark .mega-col { border-color: var(--dark-border); }
  .mega-col:last-child { border-bottom: none; }
  .mega-col-title { padding: 0; }
}

/* 信任标签（替代伪造品牌 Logo） */
.trusted-logos { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; }
.trust-tag {
  padding: .55rem 1.4rem; border-radius: 999px;
  font-size: .88rem; font-weight: 600; letter-spacing: .04em;
  color: var(--brand-600); background: var(--brand-50);
  border: 1px solid var(--brand-300);
  transition: border-color .2s, color .2s, background .2s;
}
body.dark .trust-tag { color: var(--brand-300); background: rgba(0,85,255,.12); border-color: var(--brand-600); }
.trust-tag:hover { background: var(--brand-600); border-color: var(--brand-600); color: #fff; }

/* 移动端下拉菜单（点击展开 + 手风琴滑动动画） */
@media (max-width: 900px) {
  .nav-dropdown > .dropdown-toggle::after { content: '▾'; margin-left: .4rem; font-size: .7rem; opacity: .6; transition: transform .25s; }
  .nav-dropdown.m-open > .dropdown-toggle::after { transform: rotate(180deg); }
  .nav-dropdown > .dropdown-menu,
  .nav-dropdown > .mega-menu {
    position: static; opacity: 1; visibility: visible; transform: none;
    display: grid; grid-template-rows: 0fr;
    min-width: 0; box-shadow: none; border: none;
    background: transparent; padding: 0 0 0 1rem; margin: 0;
    overflow: hidden;
    transition: grid-template-rows .32s cubic-bezier(.16,.84,.44,1), padding .28s ease;
  }
  .nav-dropdown > .dropdown-menu > li,
  .nav-dropdown > .mega-menu > * {
    overflow: hidden; min-height: 0;
  }
  .nav-dropdown.m-open > .dropdown-menu,
  .nav-dropdown.m-open > .mega-menu {
    grid-template-rows: 1fr;
    padding: .2rem 0 .4rem 1rem;
  }
  .nav-dropdown.m-open > .mega-menu { flex-direction: column; gap: .2rem; }
  .nav-dropdown > .dropdown-menu a { padding: .5rem .6rem; display: block; }
  .mega-cat-link { margin: .1rem 0; }
}
.hamburger { display: none; flex-direction: column; gap: 5px; padding: 4px; }
.hamburger span { display: block; width: 22px; height: 2px; border-radius: 1px; background: var(--brand-800); transition: all .3s var(--ease-spring); }
body.dark .hamburger span { background: var(--dark-text); }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background: linear-gradient(170deg, var(--gray-50) 0%, var(--gray-100) 35%, var(--brand-50) 70%, var(--gray-100) 100%);
  position: relative;
  overflow: hidden;
  padding: 6rem 2rem 4rem;
}
body.dark .hero {
  background: linear-gradient(170deg, var(--dark-bg) 0%, #0A1020 35%, #0D1428 70%, var(--dark-bg) 100%);
}
.hero-mesh {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 20% 30%, rgba(0,85,255,.07), transparent),
    radial-gradient(ellipse 50% 40% at 80% 70%, rgba(0,200,255,.05), transparent);
}
body.dark .hero-mesh {
  background:
    radial-gradient(ellipse 60% 50% at 20% 30%, rgba(0,85,255,.12), transparent),
    radial-gradient(ellipse 50% 40% at 80% 70%, rgba(0,200,255,.08), transparent);
}
.hero-grid-lines {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0,85,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,85,255,.04) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, rgba(0,0,0,.35), transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, rgba(0,0,0,.35), transparent 100%);
}
body.dark .hero-grid-lines {
  background-image:
    linear-gradient(rgba(0,85,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,85,255,.06) 1px, transparent 1px);
}
.hero-glow {
  position: absolute; inset: 0; pointer-events: none; z-index: 0;
}
.hero-glow::before {
  content: ''; position: absolute; top: -10%; right: -10%; width: 60%; height: 60%;
  background: radial-gradient(circle, rgba(0,85,255,.04) 0%, transparent 70%);
  border-radius: 50%;
}
.hero-glow::after {
  content: ''; position: absolute; bottom: -10%; left: -10%; width: 50%; height: 50%;
  background: radial-gradient(circle, rgba(0,200,255,.03) 0%, transparent 70%);
  border-radius: 50%;
}
body.dark .hero-glow::before { background: radial-gradient(circle, rgba(0,85,255,.06) 0%, transparent 70%); }
body.dark .hero-glow::after { background: radial-gradient(circle, rgba(0,200,255,.04) 0%, transparent 70%); }

.hero-particles {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
}
.hero-particle {
  position: absolute; width: 3px; height: 3px; border-radius: 50%;
  background: var(--brand-600); opacity: 0; animation: particleFloat 8s infinite;
}
body.dark .hero-particle { background: var(--brand-400); }
@keyframes particleFloat {
  0%   { opacity: 0; transform: translateY(0); }
  15%  { opacity: .4; }
  85%  { opacity: .4; }
  100% { opacity: 0; transform: translateY(-120px); }
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 860px;
  width: 100%;
  margin: 0 auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 4rem 2rem 5rem;
}
.hero-tag {
  display: inline-block; font-size: var(--text-small); font-weight: 600; letter-spacing: 2.5px; text-transform: uppercase;
  color: var(--brand-600); margin-bottom: 1.5rem; animation: fadeInUp .6s both;
  background: var(--brand-50); padding: .35rem 1rem; border-radius: var(--radius-full);
}
body.dark .hero-tag { background: rgba(0,85,255,.15); }
.hero-title {
  font-size: var(--text-display); font-weight: 800; line-height: 1.15;
  color: var(--gray-900); margin-bottom: 1.5rem; animation: fadeInUp .6s .1s both;
  letter-spacing: -0.02em;
}
body.dark .hero-title { color: var(--dark-text); }
.gradient-text {
  background: linear-gradient(90deg, var(--brand-700), var(--accent-400));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-sub { font-size: 1.08rem; color: var(--gray-600); max-width: 580px; margin: 0 auto 2.5rem; animation: fadeInUp .6s .2s both; letter-spacing: 0.02em; }
body.dark .hero-sub { color: var(--dark-muted); }
.hero-btns { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; animation: fadeInUp .6s .3s both; }

.btn-primary {
  display: inline-flex; align-items: center; gap: .5rem;
  background: linear-gradient(135deg, var(--brand-600), var(--brand-700)); color: #fff; font-weight: 600; font-size: .95rem;
  padding: .85rem 2rem; border-radius: var(--radius-md); transition: transform .2s, box-shadow .3s;
  box-shadow: 0 4px 20px rgba(0,85,255,.3);
  position: relative; overflow: hidden;
}
.btn-primary::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.15), transparent);
  transform: translateX(-100%); transition: transform .5s;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,85,255,.45), var(--shadow-glow);
}
.btn-primary:hover::before { transform: translateX(100%); }
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(0,85,255,.2); }
.btn-outline-light {
  display: inline-flex; align-items: center;
  border: 1.5px solid var(--brand-200); color: var(--brand-600);
  font-weight: 600; font-size: .95rem; padding: .85rem 2rem; border-radius: var(--radius-md); transition: all .25s;
  background: transparent;
}
.btn-outline-light:hover { border-color: var(--brand-600); background: var(--brand-50); box-shadow: var(--shadow-glow-sm); }
body.dark .btn-outline-light { color: var(--brand-400); border-color: rgba(0,85,255,.3); }
body.dark .btn-outline-light:hover { background: rgba(0,85,255,.1); }

.hero-tech-principles {
  display: flex; align-items: stretch; justify-content: center; gap: 1rem;
  margin-top: 4rem; animation: fadeInUp .6s .45s both;
  max-width: 900px; margin-left: auto; margin-right: auto;
}
.htp-card {
  flex: 1; min-width: 0; max-width: 260px;
  background: rgba(255,255,255,.72);
  border: 1px solid var(--brand-200);
  border-radius: var(--radius-xl);
  padding: 1.6rem 1.4rem;
  text-align: center;
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  transition: transform .3s, box-shadow .3s, border-color .3s, background .3s;
}
body.dark .htp-card {
  background: rgba(30,41,59,.55);
  border-color: var(--dark-border);
}
.htp-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-3);
  border-color: var(--brand-300);
  background: rgba(255,255,255,.9);
}
body.dark .htp-card:hover {
  background: rgba(30,41,59,.75);
  border-color: rgba(0,85,255,.25);
}
.htp-icon {
  width: 52px; height: 52px; border-radius: 14px;
  background: linear-gradient(135deg, var(--brand-600), var(--accent-400));
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 1rem;
  box-shadow: 0 8px 24px -6px rgba(0,85,255,.35);
}
.htp-icon svg { width: 26px; height: 26px; }
.htp-card h4 {
  font-size: .95rem; font-weight: 700; color: var(--gray-900); margin-bottom: .5rem;
}
body.dark .htp-card h4 { color: var(--dark-text); }
.htp-card p {
  font-size: .78rem; color: var(--gray-500); line-height: 1.65;
}
body.dark .htp-card p { color: var(--dark-muted); }
.htp-arrow {
  width: 48px; display: flex; align-items: center; justify-content: center;
  color: var(--brand-600); opacity: .55; flex-shrink: 0;
}
.htp-arrow svg { width: 100%; height: auto; }

.hero-scroll-hint {
  position: absolute; bottom: 1.4rem; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: .5rem;
  color: rgba(255,255,255,.82); font-size: .72rem; letter-spacing: 1px; z-index: 4;
  animation: fadeInUp .6s .6s both;
}
.scroll-arrow { width: 20px; height: 32px; border: 2px solid rgba(255,255,255,.55); border-radius: 10px; position: relative; }
.scroll-arrow::after {
  content: ''; position: absolute; top: 6px; left: 50%; transform: translateX(-50%);
  width: 3px; height: 8px; border-radius: 2px; background: #fff;
  animation: scrollBounce 1.8s infinite;
}

.home-video-band {
  width: 100%;
  background: #070b14;
  overflow: hidden;
}
.home-video-band .hvb-stage {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #0b1220 0%, #16213a 50%, #0b1220 100%);
}
.home-video-band .hvb-video {
  position: absolute;
  top: 50%; left: 50%;
  min-width: 100%; min-height: 100%;
  width: auto; height: auto;
  transform: translate(-50%, -50%);
  object-fit: cover; object-position: center center;
  display: block;
  
  background: linear-gradient(135deg, #0b1220 0%, #16213a 50%, #0b1220 100%);
  opacity: 1;
}

.home-video-band.is-ready .hvb-video { opacity: 1; }
.home-video-band .hvb-scrim {
  position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(180deg, rgba(7,11,20,.42) 0%, rgba(7,11,20,.10) 42%, rgba(7,11,20,.60) 100%);
}
.home-video-band .hvb-caption {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 2;
  padding: clamp(1.25rem, 4vw, 3.5rem);
  color: #fff;
}
/* 点击播放按钮（clickplay 段） */
.hvb-playbtn {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  z-index: 3; display: inline-flex; align-items: center; gap: .5rem;
  padding: .8rem 1.6rem; border-radius: 999px; cursor: pointer;
  font-size: .9rem; font-weight: 600; color: #fff;
  background: rgba(0,0,0,.55); border: 1px solid rgba(255,255,255,.35);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  transition: background .2s, transform .2s;
}
.hvb-playbtn:hover { background: rgba(0,85,255,.75); transform: translate(-50%, -50%) scale(1.05); }
.hvb-playbtn svg { display: inline-block; vertical-align: -2px; }
.hvb-eyebrow {
  font-size: .8rem; font-weight: 600; letter-spacing: .14em;
  text-transform: uppercase; opacity: .85; margin: 0 0 .5rem;
}
.hvb-title {
  font-size: clamp(1.35rem, 3.2vw, 2.4rem); font-weight: 700; line-height: 1.15;
  margin: 0; max-width: 24ch;
  text-shadow: 0 2px 18px rgba(0,0,0,.45);
}
.home-video-band .hvb-sound {
  position: absolute; right: clamp(1rem, 3vw, 2rem); top: clamp(1rem, 3vw, 2rem);
  z-index: 3; width: 44px; height: 44px; border-radius: 50%;
  display: none; align-items: center; justify-content: center;
  background: rgba(255,255,255,.16); border: 1px solid rgba(255,255,255,.3);
  color: #fff; cursor: pointer;
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  transition: background .2s, transform .2s;
}
.home-video-band .hvb-sound:hover { background: rgba(255,255,255,.28); transform: scale(1.05); }
.home-video-band .hvb-sound:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }
.home-video-band.no-source .hvb-sound { display: none !important; }
.home-video-band.no-source .hvb-scrim { background: linear-gradient(180deg, rgba(7,11,20,.30), rgba(7,11,20,.55)); }
@media (max-width: 640px) {
  .home-video-band .hvb-stage { aspect-ratio: 4 / 3; }
  .home-video-band .hvb-sound { width: 40px; height: 40px; }
}

.trusted-by { padding: 2.5rem 0; background: var(--gray-0); border-bottom: 1px solid var(--gray-200); }
body.dark .trusted-by { background: var(--dark-surface); border-bottom-color: var(--dark-border); }
.trusted-label { text-align: center; font-size: .72rem; font-weight: 600; letter-spacing: 2px; text-transform: uppercase; color: var(--gray-400); margin-bottom: 1.5rem; }
.trusted-logos { display: flex; gap: 3rem; justify-content: center; align-items: center; flex-wrap: wrap; opacity: 1; }
.trust-logo { font-size: 1.1rem; font-weight: 700; color: var(--gray-500); letter-spacing: 1px; transition: opacity .2s, transform .2s; }
body.dark .trust-logo { color: var(--dark-muted); }
.trust-logo:hover { opacity: 1; transform: translateY(-1px); }

.section { padding: 7rem 0; }
.section-alt { background: var(--gray-50); }
body.dark .section-alt { background: var(--dark-surface); }
.section-tag {
  font-size: .72rem; font-weight: 700; letter-spacing: 2.5px; text-transform: uppercase;
  color: var(--brand-600); margin-bottom: .75rem;
}
.section-title { font-size: var(--text-h2); font-weight: 800; color: var(--gray-900); line-height: 1.2; margin-bottom: 1rem; }
body.dark .section-title { color: var(--dark-text); }
.section-desc { font-size: 1.02rem; color: var(--gray-500); max-width: 560px; margin-bottom: 3.5rem; line-height: 1.7; }
body.dark .section-desc { color: var(--dark-muted); }

/* ===== 首页核心重建终端：复用重建设备页的上图下文卡片 ===== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}
.home-device-product-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  color: inherit;
  text-decoration: none;
  background: var(--gray-0);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  cursor: pointer;
  box-shadow: var(--shadow-1);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
body.dark .home-device-product-card { background: var(--gray-800); border-color: var(--dark-border); }
.home-device-product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-2);
  border-color: var(--brand-300);
}
.home-device-thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: linear-gradient(145deg, var(--accent, var(--brand-600)), #0b1220);
}
.home-device-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .35s ease;
}
.home-device-product-card:hover .home-device-image { transform: scale(1.035); }
.home-device-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  padding: 1.5rem;
  color: #fff;
  text-align: center;
  background: linear-gradient(145deg, var(--fallback-accent, var(--brand-600)), #0b1220);
}
.home-device-index {
  position: absolute;
  top: .8rem;
  left: .85rem;
  color: rgba(255,255,255,.82);
  font-size: .68rem;
  font-weight: 800;
  letter-spacing: .12em;
  text-shadow: 0 1px 6px rgba(0,0,0,.35);
}
.home-device-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 1.15rem 1.2rem 1.25rem;
}
.home-device-tag {
  align-self: flex-start;
  margin-bottom: .75rem;
  padding: .25rem .65rem;
  border-radius: 999px;
  color: var(--brand-700);
  background: var(--brand-100);
  font-size: .7rem;
  font-weight: 700;
  line-height: 1.3;
}
body.dark .home-device-tag { color: var(--brand-300); background: rgba(59,130,246,.15); }
.home-device-title {
  margin-bottom: .5rem;
  color: var(--gray-900);
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1.35;
}
body.dark .home-device-title { color: var(--dark-text); }
.home-device-desc {
  flex: 1;
  margin-bottom: 1rem;
  color: var(--gray-500);
  font-size: .86rem;
  line-height: 1.7;
}
body.dark .home-device-desc { color: var(--dark-muted); }
.home-device-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem 1rem;
  margin-bottom: 1rem;
  color: var(--gray-400);
  font-size: .76rem;
  line-height: 1.5;
}
.home-device-meta span { display: inline-flex; align-items: center; }
.home-device-link {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  color: var(--brand-600);
  font-size: .86rem;
  font-weight: 700;
  transition: gap .2s ease;
}
.home-device-product-card:hover .home-device-link { gap: .7rem; }
body.dark .home-device-link { color: var(--brand-300); }

.product-card {
  display: flex; flex-direction: row; align-items: stretch;
  text-decoration: none; color: inherit;
  background: var(--gray-0); border: 1px solid var(--gray-200); border-radius: var(--radius-lg);
  overflow: hidden; position: relative; cursor: pointer; min-height: 220px;
  transition: transform .35s var(--ease-out), box-shadow .35s, border-color .3s;
  box-shadow: var(--shadow-1);
}
body.dark .product-card { background: var(--gray-800); border-color: var(--dark-border); }
.product-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent, var(--brand-600)), transparent);
  transform: scaleX(0); transform-origin: left; transition: transform .35s var(--ease-out); z-index: 2;
}
.product-card:hover::before { transform: scaleX(1); }
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-3); border-color: var(--brand-300);
}
body.dark .product-card:hover { border-color: rgba(0,85,255,.25); }
.card-head {
  flex: 0 0 260px; min-height: 200px; padding: 1.5rem;
  background: linear-gradient(160deg, var(--accent, var(--brand-600)), var(--gray-900));
  display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden;
}
.home-card-head { padding: 0; background: var(--gray-100); }
body.dark .home-card-head { background: var(--gray-900); }
.home-product-image { width: 100%; height: 100%; object-fit: contain; padding: 1.15rem; display: block; transition: transform .35s ease; position: relative; z-index: 1; }
.product-card:hover .home-product-image { transform: scale(1.04); }
.home-card-index { position: absolute; top: .85rem; left: .9rem; z-index: 2; font-size: .68rem; font-weight: 800; letter-spacing: .12em; color: rgba(17,24,39,.55); }
body.dark .home-card-index { color: rgba(255,255,255,.58); }
.home-product-fallback { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; padding: 1.5rem; background: linear-gradient(145deg, var(--fallback-accent), var(--gray-900)); color: #fff; font-size: .9rem; text-align: center; }
.device-svg { width: 100%; height: auto; max-height: 150px; position: relative; z-index: 1; filter: drop-shadow(0 4px 12px rgba(0,0,0,.15)); transition: transform .35s; }
.product-card:hover .device-svg { transform: translateY(-4px) scale(1.03); }

.card-product-name {
  font-size: .72rem; font-weight: 600; letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--brand-600); margin-bottom: .4rem;
}
.product-model { font-weight: 800; color: var(--brand-800); letter-spacing: 0; text-transform: none; font-size: .82rem; }
body.dark .product-model { color: var(--dark-text); }
.card-body { flex: 1; padding: 1.5rem; display: flex; flex-direction: column; justify-content: center; }
.card-body h3 { font-size: 1.1rem; font-weight: 700; color: var(--gray-900); margin-bottom: .5rem; }
body.dark .card-body h3 { color: var(--dark-text); }
.card-body p { font-size: .86rem; color: var(--gray-500); line-height: 1.7; margin-bottom: .8rem; }
body.dark .card-body p { color: var(--dark-muted); }
.card-tags { display: flex; gap: .4rem; margin-bottom: 1rem; flex-wrap: wrap; }
.tag { font-size: .68rem; font-weight: 600; letter-spacing: .5px; padding: .2rem .55rem; border-radius: var(--radius-sm); background: var(--brand-50); color: var(--brand-600); }
body.dark .tag { background: rgba(0,85,255,.1); }

.param-sheet {
  border-top: 1px solid var(--gray-100); padding-top: .8rem; margin-top: .4rem;
  display: grid; grid-template-columns: 1fr 1fr; gap: .2rem 1.5rem;
}
body.dark .param-sheet { border-top-color: var(--dark-border); }
.param-row { display: flex; justify-content: space-between; align-items: center; padding: .25rem 0; font-size: .76rem; border-bottom: 1px solid var(--gray-50); }
body.dark .param-row { border-bottom-color: rgba(255,255,255,.05); }
.param-row span:first-child { color: var(--gray-400); font-weight: 500; }
body.dark .param-row span:first-child { color: var(--gray-300); }
.param-row span:last-child { color: var(--brand-800); font-weight: 700; }
body.dark .param-row span:last-child { color: var(--dark-text); }

.card-link { font-size: .84rem; font-weight: 600; color: var(--brand-600); display: inline-flex; align-items: center; gap: .3rem; transition: gap .2s, color .2s; margin-top: auto; cursor: pointer; }
.card-link:hover, .product-card:hover .card-link { gap: .6rem; color: var(--brand-700); }

.workflow-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 2rem; margin-bottom: 3rem; }
.workflow-step {
  background: var(--gray-0); border: 1px solid var(--gray-200); border-radius: var(--radius-lg);
  padding: 2rem 1.5rem; position: relative; overflow: hidden;
  transition: transform .3s, box-shadow .3s, border-color .3s;
  box-shadow: var(--shadow-1);
}
body.dark .workflow-step { background: var(--gray-800); border-color: var(--dark-border); }
.workflow-step:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); border-color: var(--brand-200); }
body.dark .workflow-step:hover { border-color: rgba(0,85,255,.2); }
.step-number {
  font-size: 2.8rem; font-weight: 800; line-height: 1;
  background: linear-gradient(135deg, var(--brand-600), var(--accent-400));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  opacity: .18; position: absolute; top: 1rem; right: 1.2rem;
}
.step-visual { margin: 1rem 0 1.2rem; }
.step-svg { width: 100%; height: auto; max-height: 140px; }
.workflow-step h4 { font-size: 1.05rem; font-weight: 700; color: var(--gray-900); margin-bottom: .5rem; }
body.dark .workflow-step h4 { color: var(--dark-text); }
.workflow-step p { font-size: .87rem; color: var(--gray-500); line-height: 1.7; }
body.dark .workflow-step p { color: var(--dark-muted); }

.tech-tags { display: flex; gap: .6rem; flex-wrap: wrap; justify-content: center; padding-top: 2rem; border-top: 1px solid var(--gray-200); }
body.dark .tech-tags { border-top-color: var(--dark-border); }
.tech-tag {
  font-size: .72rem; font-weight: 600; letter-spacing: .5px;
  padding: .4rem .9rem; border-radius: var(--radius-full);
  background: var(--brand-50); color: var(--brand-600);
  border: 1px solid var(--brand-200); transition: all .2s;
}
body.dark .tech-tag { background: rgba(0,85,255,.08); border-color: rgba(0,85,255,.15); }
.tech-tag:hover { background: var(--brand-100); border-color: var(--brand-300); transform: translateY(-1px); }

.solutions-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.5rem; }
.solution-item {
  background: var(--gray-0); border: 1px solid var(--gray-200); border-radius: var(--radius-lg);
  padding: 2rem 1.5rem; transition: transform .3s, box-shadow .3s, border-color .3s;
  box-shadow: var(--shadow-1);
}
body.dark .solution-item { background: var(--gray-800); border-color: var(--dark-border); }
.solution-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); border-color: var(--brand-200); }
body.dark .solution-item:hover { border-color: rgba(0,85,255,.2); }
.sol-icon-wrap {
  width: 52px; height: 52px; border-radius: 14px; background: var(--icon-bg, var(--brand-50));
  display: flex; align-items: center; justify-content: center; margin-bottom: 1.2rem; transition: transform .25s;
}
body.dark .sol-icon-wrap { background: var(--icon-bg, rgba(0,85,255,.1)); }
.sol-icon-wrap svg { width: 26px; height: 26px; }
.solution-item:hover .sol-icon-wrap { transform: scale(1.08); }
.solution-item h4 { font-size: 1.02rem; font-weight: 700; color: var(--gray-900); margin-bottom: .5rem; }
body.dark .solution-item h4 { color: var(--dark-text); }
.solution-item p { font-size: .87rem; color: var(--gray-500); line-height: 1.65; }
body.dark .solution-item p { color: var(--dark-muted); }

.cases-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 2rem; }
.case-card-link { display: block; color: inherit; text-decoration: none; }
.case-card-link:focus-visible, .news-card-link:focus-visible { outline: 3px solid var(--brand-300); outline-offset: 4px; border-radius: var(--radius-lg); }
.case-card {
  background: var(--gray-0); border: 1px solid var(--gray-200); border-radius: var(--radius-lg);
  overflow: hidden; transition: transform .3s, box-shadow .3s, border-color .3s;
  box-shadow: var(--shadow-1);
}
body.dark .case-card { background: var(--gray-800); border-color: var(--dark-border); }
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); border-color: var(--brand-200); }
.case-scene { overflow: hidden; }
.scene-svg { width: 100%; height: auto; display: block; transition: transform .4s; }
.case-card:hover .scene-svg { transform: scale(1.03); }
.case-quote {
  font-size: .93rem; color: var(--gray-700); line-height: 1.75;
  margin: 1.2rem 1.5rem .8rem; position: relative; padding-left: 1rem;
  border-left: 3px solid var(--brand-600);
}
body.dark .case-quote { color: var(--dark-text); }
.case-author { display: flex; gap: .8rem; align-items: center; padding: 0 1.5rem 1.5rem; }
.case-avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: linear-gradient(135deg, var(--brand-600), var(--accent-400)); color: #fff;
  font-weight: 700; font-size: .85rem; display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.case-name { font-size: .88rem; font-weight: 700; color: var(--gray-900); }
body.dark .case-name { color: var(--dark-text); }
.case-role { font-size: .78rem; color: var(--gray-400); margin-top: .1rem; }

.news-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 2rem; }
.news-card-link { display: block; color: inherit; text-decoration: none; }
.news-card-link:focus-visible { outline: 3px solid var(--brand-300); outline-offset: 4px; border-radius: var(--radius-lg); }
.news-card {
  background: var(--gray-0); border: 1px solid var(--gray-200); border-radius: var(--radius-lg);
  padding: 2rem; display: flex; flex-wrap: wrap; gap: 1.5rem; align-items: flex-start;
  transition: transform .3s, box-shadow .3s, border-color .3s;
  box-shadow: var(--shadow-1);
}
body.dark .news-card { background: var(--gray-800); border-color: var(--dark-border); }
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); border-color: var(--brand-200); }
.news-date { display: flex; flex-direction: column; align-items: center; min-width: 56px; }
.news-day { font-size: 1.8rem; font-weight: 800; color: var(--brand-600); line-height: 1; }
.news-month { font-size: .65rem; color: var(--gray-400); letter-spacing: .5px; margin-top: .2rem; }
.news-body { flex: 1; }
.news-tag { font-size: .68rem; font-weight: 600; letter-spacing: .5px; color: var(--brand-600); margin-bottom: .5rem; text-transform: uppercase; }
.news-card h4 { font-size: 1rem; font-weight: 700; color: var(--gray-900); margin-bottom: .5rem; line-height: 1.5; }
body.dark .news-card h4 { color: var(--dark-text); }
.news-card p { font-size: .85rem; color: var(--gray-500); line-height: 1.7; margin-bottom: .8rem; }
body.dark .news-card p { color: var(--dark-muted); }
.news-cover {
  flex: 0 0 100%; width: 100%; height: 180px; object-fit: cover; border-radius: 12px;
}

.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4.5rem; align-items: center; }
.about-p { font-size: .94rem; color: var(--gray-600); line-height: 1.85; margin-bottom: 1rem; }
body.dark .about-p { color: var(--dark-muted); }
.about-svg-art { width: 100%; height: auto; border-radius: var(--radius-xl); display: block; }
.about-badges { display: flex; gap: .8rem; flex-wrap: wrap; margin-top: .5rem; }
.badge {
  display: inline-flex; align-items: center; gap: .4rem;
  font-size: .78rem; font-weight: 600; color: var(--brand-700);
  background: var(--brand-50); padding: .4rem .8rem; border-radius: var(--radius-sm);
  transition: transform .2s, box-shadow .2s;
}
.badge:hover { transform: translateY(-1px); box-shadow: var(--shadow-1); }
body.dark .badge { color: var(--brand-400); background: rgba(0,85,255,.1); }

.contact-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 3rem; align-items: start; }
.contact-form { display: flex; flex-direction: column; gap: 1.1rem; }
.form-group { display: flex; flex-direction: column; gap: .35rem; }
.form-group label { font-size: .8rem; font-weight: 600; color: var(--gray-600); }
body.dark .form-group label { color: var(--dark-muted); }

.form-group.floating { position: relative; gap: 0; }
.form-group.floating label {
  position: absolute; left: 1rem; top: 50%; transform: translateY(-50%);
  font-size: .88rem; font-weight: 500; color: var(--gray-400);
  pointer-events: none; transition: all .2s var(--ease-smooth);
  background: transparent; padding: 0 .25rem;
}
.form-group.floating textarea ~ label { top: 1rem; transform: none; }
body.dark .form-group.floating label { color: var(--dark-muted); }
.form-group.floating input:focus ~ label,
.form-group.floating input:not(:placeholder-shown) ~ label,
.form-group.floating textarea:focus ~ label,
.form-group.floating textarea:not(:placeholder-shown) ~ label {
  top: -.55rem; transform: none; font-size: .72rem; font-weight: 600;
  color: var(--brand-600); background: var(--gray-0);
}
body.dark .form-group.floating input:focus ~ label,
body.dark .form-group.floating input:not(:placeholder-shown) ~ label,
body.dark .form-group.floating textarea:focus ~ label,
body.dark .form-group.floating textarea:not(:placeholder-shown) ~ label {
  color: var(--brand-400); background: var(--dark-bg);
}
.form-group.floating input,
.form-group.floating textarea { padding: .9rem 1rem .6rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.contact-form input, .contact-form textarea {
  width: 100%; padding: .82rem 1rem; border: 1.5px solid var(--gray-200); border-radius: var(--radius-md);
  font-size: .9rem; font-family: inherit; background: var(--gray-0); color: var(--gray-900);
  transition: border-color .2s, box-shadow .2s; outline: none;
}
body.dark .contact-form input, body.dark .contact-form textarea { background: var(--gray-800); border-color: var(--dark-border); color: var(--dark-text); }
.contact-form input:focus, .contact-form textarea:focus {
  border-color: var(--brand-600);
  box-shadow: 0 0 0 3px rgba(0,85,255,.08), 0 0 0 1px rgba(0,85,255,.1);
}
.contact-form textarea { resize: vertical; min-height: 100px; }
.contact-form .btn-primary { justify-content: center; }

.contact-info { display: flex; flex-direction: column; gap: 1.2rem; }
.info-item {
  display: flex; gap: 1rem; align-items: flex-start;
  padding: 1.2rem; background: var(--gray-0); border: 1px solid var(--gray-200); border-radius: var(--radius-lg);
  transition: border-color .2s, transform .2s, box-shadow .2s;
}
body.dark .info-item { background: var(--gray-800); border-color: var(--dark-border); }
.info-item:hover { border-color: var(--brand-200); transform: translateY(-2px); box-shadow: var(--shadow-1); }
.info-icon-wrap {
  width: 44px; height: 44px; border-radius: 10px; background: var(--brand-50);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 2px;
}
body.dark .info-icon-wrap { background: rgba(0,85,255,.1); }
.info-icon-wrap svg { width: 22px; height: 22px; }
.info-item h5 { font-size: .82rem; font-weight: 700; color: var(--gray-900); margin-bottom: .3rem; }
body.dark .info-item h5 { color: var(--dark-text); }
.info-item p { font-size: .84rem; color: var(--gray-500); line-height: 1.6; }
body.dark .info-item p { color: var(--dark-muted); }

.footer { background: var(--gray-900); color: var(--gray-400); padding: 4rem 0 0; }
.footer-grid {
  display: grid; grid-template-columns: 1.8fr 1fr 1fr;
  gap: 2.5rem 2rem; padding-bottom: 3rem; border-bottom: 1px solid rgba(255,255,255,.06);
}
.footer-brand .logo { color: var(--dark-text); margin-bottom: .75rem; }
.footer-brand p { font-size: .88rem; line-height: 1.6; }
.footer-contact { margin-top: 1rem; padding-top: 1rem; border-top: 1px solid rgba(255,255,255,.06); }
.footer-contact p { font-size: .82rem; color: var(--gray-400); line-height: 1.7; margin-bottom: .4rem; }

/* 公众号二维码区 */
.footer-qrcodes h5 {
  font-size: .72rem; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--gray-500); margin-bottom: 1rem;
}
.qrcode-list { display: flex; gap: 1.2rem; }
.qrcode-item { text-align: center; }
.qrcode-item img {
  width: 110px; height: 110px; border-radius: 10px;
  border: 1px solid rgba(255,255,255,.08);
  background: #fff; padding: 4px;
  transition: transform .25s, box-shadow .25s;
}
.qrcode-item img:hover { transform: scale(1.05); box-shadow: 0 4px 20px rgba(0,0,0,.3); }
.qrcode-item span { display: block; margin-top: .5rem; font-size: .82rem; color: var(--gray-400); }

.footer-links h5 {
  font-size: .72rem; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--gray-500); margin-bottom: 1rem;
}
.footer-links a { display: block; font-size: .87rem; color: var(--gray-400); padding: .28rem 0; transition: color .2s, transform .2s; position: relative; padding-left: 0; }
.footer-links a:hover { color: var(--brand-400); transform: translateX(6px); }
.footer-links a::before {
  content: '\203A'; position: absolute; left: -8px; opacity: 0;
  transition: opacity .2s, transform .2s; transform: translateX(-4px);
  color: var(--brand-400);
}
.footer-links a:hover::before { opacity: 1; transform: translateX(0); }
.footer-bottom { text-align: center; padding: 1.5rem 0; font-size: .78rem; color: rgba(148,163,184,.85); }
.footer-bottom a { color: rgba(148,163,184,.9); text-decoration: underline; text-underline-offset: 3px; }
.footer-bottom a:hover { color: var(--brand-600); }
.contact-info-link { color: inherit; text-decoration: underline; text-underline-offset: 3px; }
.contact-info-link:hover { color: var(--brand-600); }
.field-error { color: var(--illus-red); font-size: .8rem; font-weight: 500; margin-top: .35rem; }

.modal-overlay {
  position: fixed; inset: 0; z-index: 9999; display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,.5); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  opacity: 0; pointer-events: none; transition: opacity .3s;
}
.modal-overlay.open { opacity: 1; pointer-events: auto; }
.modal-content {
  background: var(--gray-0); border-radius: var(--radius-xl); max-width: 720px; width: 90%; max-height: 85vh; overflow: auto;
  padding: 2.5rem; position: relative; transform: translateY(20px); transition: transform .3s var(--ease-spring);
  box-shadow: var(--shadow-4);
}
body.dark .modal-content { background: var(--gray-800); }
.modal-overlay.open .modal-content { transform: translateY(0); }
.modal-close {
  position: absolute; top: 1rem; right: 1rem; width: 36px; height: 36px;
  border-radius: 50%; font-size: 1.1rem; color: var(--gray-500);
  display: flex; align-items: center; justify-content: center; transition: background .2s, transform .2s;
}
.modal-close:hover { background: var(--gray-100); transform: rotate(90deg); }
body.dark .modal-close:hover { background: rgba(255,255,255,.06); }

.modal-product-header {
  display: flex; gap: 1.5rem; align-items: flex-start; margin-bottom: 2rem;
}
.modal-product-svg { width: 200px; height: auto; border-radius: var(--radius-lg); }
.modal-product-info h2 { font-size: 1.5rem; font-weight: 800; color: var(--gray-900); margin-bottom: .5rem; }
body.dark .modal-product-info h2 { color: var(--dark-text); }
.modal-product-info .product-model { font-size: .85rem; color: var(--brand-600); font-weight: 600; }
.modal-product-info p { font-size: .9rem; color: var(--gray-500); line-height: 1.7; margin-top: .8rem; }
body.dark .modal-product-info p { color: var(--dark-muted); }
.modal-specs { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; margin: 1.5rem 0; }
.modal-spec { padding: .8rem; background: var(--gray-50); border-radius: var(--radius-lg); }
body.dark .modal-spec { background: rgba(255,255,255,.05); }
.modal-spec-label { font-size: .7rem; color: var(--gray-400); letter-spacing: .5px; text-transform: uppercase; }
.modal-spec-value { font-size: .95rem; font-weight: 700; color: var(--brand-800); margin-top: .2rem; }
body.dark .modal-spec-value { color: var(--dark-text); }

.developer-modal { max-width: 640px; }
.dev-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.dev-card {
  padding: 1.5rem; border: 1px solid var(--gray-200); border-radius: var(--radius-lg);
  transition: border-color .2s, transform .2s, box-shadow .2s; text-align: center;
}
body.dark .dev-card { border-color: var(--dark-border); }
.dev-card:hover { border-color: var(--brand-600); transform: translateY(-2px); box-shadow: var(--shadow-2); }
.dev-icon { font-size: 2rem; margin-bottom: .5rem; }
.dev-card h4 { font-size: .95rem; font-weight: 700; color: var(--gray-900); margin-bottom: .3rem; }
body.dark .dev-card h4 { color: var(--dark-text); }
.dev-card p { font-size: .8rem; color: var(--gray-400); }

@keyframes fadeInUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideInLeft { from { opacity: 0; transform: translateX(-40px); } to { opacity: 1; transform: translateX(0); } }
@keyframes slideInRight { from { opacity: 0; transform: translateX(40px); } to { opacity: 1; transform: translateX(0); } }
@keyframes scaleIn { from { opacity: 0; transform: scale(0.95); } to { opacity: 1; transform: scale(1); } }
@keyframes scrollBounce { 0%,100% { opacity: 1; transform: translateX(-50%) translateY(0); } 50% { opacity: .4; transform: translateX(-50%) translateY(8px); } }

.reveal-left, .reveal-right, .reveal-card, .reveal-up {
  opacity: 0; transition: opacity .7s var(--ease-out), transform .7s var(--ease-out);
}
/* 无 JS 兜底：脚本未执行时内容始终可见 */
.no-js .reveal-left, .no-js .reveal-right, .no-js .reveal-card, .no-js .reveal-up {
  opacity: 1; transform: none;
}
.reveal-left  { transform: translateX(-36px); }
.reveal-right { transform: translateX(36px); }
.reveal-card { transform: translateY(32px); }
.reveal-up   { transform: translateY(36px); }
.reveal-left.visible, .reveal-right.visible { opacity: 1; transform: translateX(0); }
.reveal-card.visible, .reveal-up.visible { opacity: 1; transform: translateY(0); }

.reveal-card:nth-child(1) { transition-delay: 0s; }
.reveal-card:nth-child(2) { transition-delay: .08s; }
.reveal-card:nth-child(3) { transition-delay: .16s; }
.reveal-card:nth-child(4) { transition-delay: .24s; }
.reveal-card:nth-child(5) { transition-delay: .32s; }
.reveal-card:nth-child(6) { transition-delay: .4s; }

.app-tabs {
  display: flex;
  gap: 0;
  margin: 2.5rem 0 2rem;
  border-bottom: 2px solid var(--gray-200);
  padding: 0;
}
body.dark .app-tabs { border-bottom-color: var(--dark-border); }
.app-tab {
  padding: .75rem 1.8rem;
  font-size: .95rem;
  font-weight: 600;
  color: var(--gray-500);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  transition: color .2s, border-color .2s;
  font-family: inherit;
}
.app-tab:hover { color: var(--brand-600); }
.app-tab.active {
  color: var(--brand-600);
  border-bottom-color: var(--brand-600);
}
body.dark .app-tab { color: var(--dark-muted); }
body.dark .app-tab:hover { color: var(--brand-400); }
body.dark .app-tab.active { color: var(--brand-400); border-bottom-color: var(--brand-400); }
.app-panel { display: none; }
.app-panel.active { display: block; animation: fadeUp .35s ease; }
.app-panel-desc {
  color: var(--gray-500);
  font-size: .95rem;
  margin-bottom: 1.5rem;
}
body.dark .app-panel-desc { color: var(--dark-muted); }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.scroll-progress {
  position: fixed; top: 0; left: 0; width: 0%; height: 2px;
  background: linear-gradient(90deg, var(--brand-600), var(--accent-400));
  z-index: 10000; transition: width .1s linear;
  box-shadow: 0 0 6px rgba(0,85,255,.3);
}
body.dark .scroll-progress {
  box-shadow: 0 0 4px rgba(0,85,255,.15);
}

@media (max-width: 900px) {
  .nav-links { display: none; } .nav-cta-primary { display: none; } .nav-cta-secondary { display: none; } .nav-dev-link { display: none; } .hamburger { display: flex; }
  .nav-mobile-only { display: block; }
  .nav-mobile-only a { display: block; padding: .7rem 1.2rem; color: var(--brand-800); font-weight: 500; font-size: .95rem; border-radius: var(--radius-md); transition: background .2s; }
  body.dark .nav-mobile-only a { color: var(--dark-text); }
  .nav-mobile-only a:hover { background: var(--brand-50); }
  .nav-mobile-only .nav-download-link {
    background: linear-gradient(135deg, var(--brand-600), var(--brand-700)); color: #fff !important; text-align: center; margin-top: .5rem;
    border-radius: var(--radius-md); font-weight: 600;
  }
  .nav-mobile-only .nav-download-link:hover { background: linear-gradient(135deg, var(--brand-700), var(--brand-800)); }
  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-tech-principles { gap: 1rem; padding: 0 1rem; }
  .htp-arrow { display: none; }
  .workflow-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .product-card { flex-direction: column; }
  .card-head { flex: 0 0 180px; min-height: 180px; }
  .modal-product-header { flex-direction: column; }
  .dev-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .hero-title { font-size: 1.8rem; } .section { padding: 4.5rem 0; }
  .footer-grid { grid-template-columns: 1fr; } .form-row { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .hero-tech-principles { flex-direction: column; align-items: center; gap: 1.2rem; }
  .htp-card { max-width: 100%; width: 100%; }
  .trusted-logos { gap: 1.5rem; }
  .feature-grid { grid-template-columns: 1fr; }
  .sol-overview { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

.btn-spinner {
  display: inline-block; width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: btnSpin .6s linear infinite;
  vertical-align: middle; margin-right: 4px;
}
@keyframes btnSpin { to { transform: rotate(360deg); } }

.global-toast {
  position: fixed; bottom: 2rem; left: 50%; transform: translateX(-50%) translateY(20px);
  z-index: 99999;
  display: flex; align-items: center; gap: .5rem;
  padding: .85rem 1.5rem;
  border-radius: var(--radius-md);
  font-size: .9rem; font-weight: 600; color: #fff;
  background: var(--gray-900);
  box-shadow: 0 12px 40px rgba(0,0,0,.25);
  opacity: 0; pointer-events: none;
  transition: opacity .3s var(--ease-out), transform .3s var(--ease-spring);
}
.global-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.global-toast--success { background: linear-gradient(135deg, #10b981, #059669); }
.global-toast--error   { background: linear-gradient(135deg, #ef4444, #dc2626); }
.global-toast--info    { background: linear-gradient(135deg, var(--brand-600), var(--brand-700)); }
.toast-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 22px; height: 22px; border-radius: 50%;
  background: rgba(255,255,255,.2); font-size: .75rem; flex-shrink: 0;
}
body.dark .global-toast { box-shadow: 0 12px 40px rgba(0,0,0,.5); }
body.dark .global-toast--info { background: linear-gradient(135deg, var(--brand-500), var(--brand-600)); }

/* ===== 重建设备页：复用 V147 横向产品卡片语言 ===== */
a.device-product-card {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  min-height: 270px;
  color: inherit;
  text-decoration: none;
  background: var(--gray-0);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  cursor: pointer;
  --device-card-accent: var(--accent, var(--brand-600));
  transition: transform .35s var(--ease-out), box-shadow .35s, border-color .3s;
  box-shadow: var(--shadow-1);
}
body.dark a.device-product-card { background: var(--gray-800); border-color: var(--dark-border); }
a.device-product-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--device-card-accent), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s var(--ease-out);
  z-index: 3;
}
a.device-product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-3);
  border-color: var(--brand-300);
}
a.device-product-card:hover::before { transform: scaleX(1); }
.device-product-card .card-head {
  flex: 0 0 260px;
  min-height: 260px;
  padding: 1.5rem;
  background: linear-gradient(160deg, var(--device-card-accent), #0b1220);
}
.device-product-card .home-card-head {
  background: linear-gradient(160deg, var(--device-card-accent), #0b1220);
}
.device-product-card .home-product-image {
  padding: 1rem;
  object-fit: contain;
  filter: drop-shadow(0 10px 18px rgba(0,0,0,.2));
}
.device-product-card .card-body {
  min-width: 0;
}
.device-product-card .card-body p {
  overflow-wrap: anywhere;
}
.device-product-card .param-row span:last-child {
  overflow-wrap: anywhere;
  text-align: right;
}

.proj-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 2rem;
}
.proj-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg, 16px);
  overflow: hidden;
  box-shadow: var(--shadow-1, 0 1px 3px rgba(0,0,0,.06));
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
body.dark .proj-card { background: var(--gray-800); border-color: var(--dark-border); }
.proj-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-2, 0 18px 40px rgba(0,0,0,.12));
  border-color: var(--brand-200, #bfdbfe);
}
.proj-card a.proj-card-link { color: inherit; text-decoration: none; display: flex; flex-direction: column; height: 100%; }

.proj-thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--brand-600) 0%, #1e3a8a 100%);
  overflow: hidden;
}
.proj-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.proj-thumb .proj-thumb-icon {
  width: 56px; height: 56px; color: rgba(255,255,255,.85);
}
.proj-thumb .proj-thumb-label {
  position: absolute; left: 1rem; bottom: 1rem;
  font-size: .8rem; color: rgba(255,255,255,.8); letter-spacing: .04em;
}

.proj-thumb { --proj-accent: var(--brand-600); background: linear-gradient(135deg, var(--proj-accent) 0%, #0b1220 130%); }

.proj-body { padding: 1.5rem 1.5rem 1.75rem; display: flex; flex-direction: column; flex: 1; }
.proj-tag {
  align-self: flex-start;
  font-size: .72rem; font-weight: 600; letter-spacing: .05em;
  color: var(--brand-700, #1d4ed8);
  background: var(--brand-100, #eff6ff);
  padding: .25rem .7rem; border-radius: 999px; margin-bottom: .9rem;
}
body.dark .proj-tag { color: var(--brand-300, #93c5fd); background: rgba(59,130,246,.15); }
.proj-title {
  font-size: 1.2rem; font-weight: 700; color: var(--gray-900);
  line-height: 1.4; margin-bottom: .6rem;
}
body.dark .proj-title { color: var(--dark-text); }
.proj-desc {
  font-size: .9rem; color: var(--gray-500); line-height: 1.7; margin-bottom: 1.1rem;
  flex: 1;
}
body.dark .proj-desc { color: var(--dark-muted); }
.proj-meta {
  display: flex; align-items: center; gap: 1rem;
  font-size: .8rem; color: var(--gray-400); margin-bottom: 1rem;
}
.proj-meta span { display: inline-flex; align-items: center; gap: .3rem; }
.proj-link {
  font-size: .9rem; font-weight: 600; color: var(--brand-600);
  display: inline-flex; align-items: center; gap: .35rem;
  transition: gap .2s ease;
}
.proj-card:hover .proj-link { gap: .7rem; }
body.dark .proj-link { color: var(--brand-300); }

.proj-detail-hero {
  padding: 9rem 0 3rem; text-align: center;
  background: linear-gradient(180deg, rgba(0,85,255,.05) 0%, transparent 100%);
}
body.dark .proj-detail-hero { background: linear-gradient(180deg, rgba(0,85,255,.1) 0%, transparent 100%); }
.proj-detail-hero .section-tag { margin-bottom: .6rem; }
.proj-detail-hero h1 {
  font-size: var(--text-hero-sub, 2.4rem); font-weight: 800; margin-bottom: .8rem;
  background: linear-gradient(135deg, var(--gray-800), var(--brand-600));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
body.dark .proj-detail-hero h1 {
  background: linear-gradient(135deg, var(--gray-200), var(--brand-300));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.proj-detail-hero p { font-size: 1.1rem; color: var(--gray-600); max-width: 640px; margin: 0 auto; }
body.dark .proj-detail-hero p { color: var(--gray-400); }

.proj-overview { padding: 3.5rem 0 4rem; }
.proj-overview-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 3rem; align-items: start; }
.proj-overview-text h2 { font-size: 1.6rem; font-weight: 700; color: var(--gray-900); margin-bottom: 1.2rem; }
body.dark .proj-overview-text h2 { color: var(--dark-text); }
.proj-overview-text p { font-size: 1rem; color: var(--gray-600); line-height: 1.9; margin-bottom: 1rem; }
body.dark .proj-overview-text p { color: var(--dark-muted); }

.proj-facts {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg, 16px);
  padding: 1.5rem 1.6rem;
  position: sticky; top: 6rem;
}
body.dark .proj-facts { background: var(--gray-800); border-color: var(--dark-border); }
.proj-facts h4 { font-size: .8rem; letter-spacing: .08em; text-transform: uppercase; color: var(--gray-400); margin-bottom: 1rem; }
.proj-fact-row { display: flex; justify-content: space-between; gap: 1rem; padding: .65rem 0; border-bottom: 1px solid var(--gray-200); }
body.dark .proj-fact-row { border-color: var(--dark-border); }
.proj-fact-row:last-child { border-bottom: none; }
.proj-fact-row .k { color: var(--gray-500); font-size: .88rem; }
.proj-fact-row .v { color: var(--gray-900); font-weight: 600; font-size: .88rem; text-align: right; }
body.dark .proj-fact-row .k { color: var(--dark-muted); }
body.dark .proj-fact-row .v { color: var(--dark-text); }

.proj-media-section { padding: 1rem 0 4rem; }
.proj-media {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-lg, 16px);
  overflow: hidden;
  background: linear-gradient(135deg, #0b1220 0%, #16213a 50%, #0b1220 100%);
  display: flex; align-items: center; justify-content: center;
}
.proj-media .proj-video { width: 100%; height: 100%; object-fit: cover; display: block; }
.proj-media-placeholder {
  color: rgba(255,255,255,.7); font-size: 1rem; letter-spacing: .05em;
  display: flex; flex-direction: column; align-items: center; gap: .6rem;
}
.proj-media-placeholder svg { width: 44px; height: 44px; opacity: .6; }
.proj-section-title { font-size: 1.6rem; font-weight: 700; color: var(--gray-900); margin-bottom: 1.5rem; }
body.dark .proj-section-title { color: var(--dark-text); }

.proj-gallery-section { padding: 1rem 0 4.5rem; }
.proj-gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.proj-photo {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-md, 12px);
  overflow: hidden;
  background: linear-gradient(135deg, var(--brand-100, #eff6ff) 0%, var(--gray-100) 100%);
  display: flex; align-items: center; justify-content: center;
  color: var(--gray-400); font-size: .85rem;
}
body.dark .proj-photo { background: linear-gradient(135deg, rgba(59,130,246,.12) 0%, var(--gray-800) 100%); color: var(--dark-muted); }
.proj-photo img { width: 100%; height: 100%; object-fit: cover; display: block; }

.proj-back { padding: 0 0 4.5rem; text-align: center; }

@media (max-width: 768px) {
  .device-product-card { flex-direction: column; }
  .device-product-card .card-head { flex: 0 0 220px; min-height: 220px; }
  .device-product-card .home-product-image { padding: 1.25rem; }
  .proj-grid { grid-template-columns: 1fr; }
  .proj-overview-grid { grid-template-columns: 1fr; gap: 2rem; }
  .proj-facts { position: static; }
  .proj-gallery { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .proj-gallery { grid-template-columns: 1fr; }
}


/* ===== 项目详情页 6 格照片网格（增量修复 B） ===== */
.proj-gallery-6{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;margin:24px 0}
.proj-gallery-6 figure{margin:0}
.proj-gallery-6 img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:12px;box-shadow:0 4px 16px rgba(0,0,0,.18);display:block}
.proj-photo-empty{aspect-ratio:4/3;border:2px dashed #b9c4d0;border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#8a97a6;background:#f6f8fb;font-size:13px;gap:6px}
.proj-photo-empty svg{width:30px;height:30px;opacity:.5}
@media(max-width:900px){.proj-gallery-6{grid-template-columns:repeat(3,1fr)}}
@media(max-width:560px){.proj-gallery-6{grid-template-columns:repeat(2,1fr)}}

/* ===== 品牌主张区（brand-story） ===== */
.brand-story { background: var(--gray-50); }
body.dark .brand-story { background: var(--gray-900); }
.brand-story-desc { max-width: 560px; margin: .8rem auto 0; text-align: center; color: var(--gray-500); font-size: .95rem; line-height: 1.7; }
body.dark .brand-story-desc { color: var(--dark-muted); }
.brand-values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-top: 3rem; }
.brand-value {
  padding: 2rem 1.6rem; border-radius: var(--radius-xl);
  background: var(--gray-0); border: 1px solid var(--gray-200);
  text-align: center; transition: transform .25s var(--ease-out), box-shadow .25s var(--ease-out), border-color .25s;
}
body.dark .brand-value { background: var(--gray-800); border-color: var(--dark-border); }
.brand-value:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); border-color: var(--brand-200); }
body.dark .brand-value:hover { border-color: rgba(0,85,255,.35); }
.brand-value-icon {
  width: 58px; height: 58px; margin: 0 auto 1.2rem; border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  color: var(--brand-600); background: var(--brand-50);
}
body.dark .brand-value-icon { color: var(--brand-300); background: rgba(0,85,255,.12); }
.brand-value h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: .6rem; color: var(--gray-900); }
body.dark .brand-value h3 { color: var(--dark-text); }
.brand-value p { font-size: .88rem; line-height: 1.7; color: var(--gray-500); margin: 0; }
body.dark .brand-value p { color: var(--dark-muted); }
@media (max-width: 768px) {
  .brand-values { grid-template-columns: 1fr; gap: 1rem; margin-top: 2rem; }
  .brand-value { padding: 1.5rem 1.2rem; }
}

/* ===== 品牌主张区（brand-story） ===== */
.brand-story { background: var(--gray-50); }
body.dark .brand-story { background: var(--gray-900); }
.brand-story-desc { max-width: 560px; margin: .8rem auto 0; text-align: center; color: var(--gray-500); font-size: .95rem; line-height: 1.7; }
body.dark .brand-story-desc { color: var(--dark-muted); }
.brand-values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-top: 3rem; }
.brand-value {
  padding: 2rem 1.6rem; border-radius: var(--radius-xl);
  background: var(--gray-0); border: 1px solid var(--gray-200);
  text-align: center; transition: transform .25s var(--ease-out), box-shadow .25s var(--ease-out), border-color .25s;
}
body.dark .brand-value { background: var(--gray-800); border-color: var(--dark-border); }
.brand-value:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); border-color: var(--brand-200); }
body.dark .brand-value:hover { border-color: rgba(0,85,255,.35); }
.brand-value-icon {
  width: 58px; height: 58px; margin: 0 auto 1.2rem; border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  color: var(--brand-600); background: var(--brand-50);
}
body.dark .brand-value-icon { color: var(--brand-300); background: rgba(0,85,255,.12); }
.brand-value h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: .6rem; color: var(--gray-900); }
body.dark .brand-value h3 { color: var(--dark-text); }
.brand-value p { font-size: .88rem; line-height: 1.7; color: var(--gray-500); margin: 0; }
body.dark .brand-value p { color: var(--dark-muted); }
@media (max-width: 768px) {
  .brand-values { grid-template-columns: 1fr; gap: 1rem; margin-top: 2rem; }
  .brand-value { padding: 1.5rem 1.2rem; }
}

/* ===== 统一线性图标（emoji 替换后的 .emoji-ico） ===== */
.emoji-ico{
  width:1.15em;height:1.15em;
  vertical-align:-0.18em;
  flex:0 0 auto;
  stroke:currentColor;
}

.home-model-group{margin-top:2.5rem}.home-model-group-title{font-size:1.25rem;margin:0 0 1rem;color:var(--brand-700,#0055ff)}.home-models-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.25rem}.home-model-card{display:block;background:var(--gray-0,#fff);border:1px solid var(--gray-200,rgba(0,85,255,.12));border-radius:16px;overflow:hidden;color:inherit;text-decoration:none;box-shadow:0 8px 24px rgba(0,40,120,.06);transition:transform .25s ease,box-shadow .25s ease}.home-model-card:hover{transform:translateY(-4px);box-shadow:0 16px 32px rgba(0,40,120,.12)}.home-model-thumb{aspect-ratio:16/9;background:#eef4ff;overflow:hidden}.home-model-image{width:100%;height:100%;object-fit:cover;display:block}.home-model-fallback{height:100%;display:grid;place-items:center;color:#4770b8;font-weight:600}.home-model-body{padding:1rem}.home-model-tag{font-size:.75rem;color:#4770b8}.home-model-body h3{margin:.35rem 0;font-size:1.05rem}.home-model-body p{margin:0;color:#64748b;font-size:.86rem;line-height:1.6;min-height:2.75em}@media(max-width:820px){.home-models-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:.9rem}}@media(max-width:520px){.home-models-grid{grid-template-columns:1fr;gap:.8rem}.home-model-group{margin-top:1.8rem}}