/* 山东宏卡官网 · 深空科技主题 v3 */
:root {
  /* 底色 */
  --bg: #050c16;
  --bg-2: #071322;
  --panel: rgba(255, 255, 255, .038);
  --panel-2: rgba(255, 255, 255, .06);
  --card: rgba(255, 255, 255, .045);

  /* 主色：科技蓝 → 亮青 */
  --blue: #3d8bff;
  --blue-d: #2a6ae8;
  --blue-l: #7db4ff;
  --cyan: #22e0f5;
  --cyan-d: #0fb6cc;
  --grad: linear-gradient(115deg, #3d8bff 0%, #22e0f5 100%);
  --grad-soft: linear-gradient(115deg, rgba(61, 139, 255, .18) 0%, rgba(34, 224, 245, .14) 100%);
  --grad-line: linear-gradient(90deg, #3d8bff, #22e0f5);
  --glow: 0 10px 30px rgba(61, 139, 255, .32);
  --glow-cyan: 0 10px 30px rgba(34, 224, 245, .28);

  /* 文字与线条 */
  --ink: #e9f3ff;
  --ink-2: #9db3ce;
  --ink-3: #6c829c;
  --line: rgba(120, 190, 255, .14);
  --line-2: rgba(120, 190, 255, .26);

  --radius: 16px;
  --shadow: 0 6px 24px rgba(0, 0, 0, .32);
  --shadow-lg: 0 22px 60px rgba(0, 0, 0, .48);
  --maxw: 1200px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.75 "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 全站背景：径向光晕 + 网格纹理 */
body::before {
  content: ""; position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background:
    radial-gradient(760px 420px at 12% -6%, rgba(61, 139, 255, .20), transparent 62%),
    radial-gradient(620px 380px at 88% 8%, rgba(34, 224, 245, .13), transparent 62%),
    radial-gradient(900px 520px at 50% 108%, rgba(61, 139, 255, .10), transparent 65%),
    linear-gradient(180deg, #050c16 0%, #061020 60%, #040a13 100%);
}
body::after {
  content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: .5;
  background-image:
    linear-gradient(rgba(120, 200, 255, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 200, 255, .05) 1px, transparent 1px);
  background-size: 62px 62px;
  mask-image: radial-gradient(1200px 700px at 50% 0%, #000 0%, transparent 85%);
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { margin: 0; font-weight: 700; line-height: 1.35; letter-spacing: -.2px; }
p { margin: 0 0 12px; }
ul { margin: 0; padding: 0; list-style: none; }
::selection { background: rgba(34, 224, 245, .32); color: #fff; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; position: relative; }

/* ── 按钮 ─────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  height: 46px; padding: 0 24px; border-radius: 11px; font-size: 15px; font-weight: 600;
  border: 1px solid transparent; cursor: pointer; transition: .24s cubic-bezier(.3, .8, .3, 1);
  white-space: nowrap; position: relative; overflow: hidden;
}
.btn-primary {
  background: var(--grad); color: #04121f; font-weight: 700;
  box-shadow: var(--glow), inset 0 1px 0 rgba(255, 255, 255, .35);
}
.btn-primary::after {
  content: ""; position: absolute; top: 0; bottom: 0; width: 60px; left: -80px;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, .55), transparent);
  transform: skewX(-18deg); transition: left .55s ease;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 38px rgba(61, 139, 255, .45); }
.btn-primary:hover::after { left: 120%; }
.btn-ghost {
  border-color: rgba(140, 210, 255, .38); color: #dff1ff;
  background: rgba(255, 255, 255, .05); backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, .12); border-color: rgba(34, 224, 245, .7);
  color: #fff; transform: translateY(-2px); box-shadow: 0 10px 26px rgba(34, 224, 245, .22);
}
.btn-outline {
  border-color: var(--line-2); color: var(--ink);
  background: rgba(255, 255, 255, .04); backdrop-filter: blur(6px);
}
.btn-outline:hover {
  border-color: var(--cyan); color: var(--cyan);
  box-shadow: 0 10px 28px rgba(34, 224, 245, .18); transform: translateY(-2px);
}
.btn-sm { height: 38px; padding: 0 18px; font-size: 14px; border-radius: 9px; }

/* ── 头部 ─────────────────────────────── */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 80;
  background: transparent; border-bottom: 1px solid transparent;
  transition: background .3s, border-color .3s, backdrop-filter .3s;
}
.site-header.scrolled {
  background: rgba(5, 12, 22, .82); backdrop-filter: blur(16px) saturate(140%);
  border-bottom-color: var(--line);
}
.site-header::before {
  content: ""; display: block; height: 2px; background: var(--grad-line);
  opacity: 0; transition: opacity .3s;
}
.site-header.scrolled::before { opacity: 1; }
.header-inner { height: 70px; display: flex; align-items: center; gap: 18px; }

.brand { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brand img { height: 34px; width: auto; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 11px; display: grid; place-items: center;
  background: var(--grad); color: #04121f; font-weight: 800; font-size: 15px; letter-spacing: .5px;
  box-shadow: 0 6px 18px rgba(61, 139, 255, .45), inset 0 1px 0 rgba(255, 255, 255, .4);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text b { font-size: 16.5px; letter-spacing: .4px; color: #fff; }
.brand-text i {
  font-style: normal; font-size: 10.5px; color: var(--ink-3); letter-spacing: 1.2px; text-transform: uppercase;
}

.main-nav { flex: 1; min-width: 0; display: flex; align-items: center; justify-content: flex-end; gap: 14px; }
.main-nav ul { display: flex; gap: 2px; }
.main-nav a {
  font-size: 14.4px; color: rgba(226, 240, 255, .78); position: relative;
  padding: 8px 10px; border-radius: 9px; transition: .22s;
  /* 关键：导航项一律不折行。之前少了这行，宽度不足时被 flex 压缩成"一字一行" */
  white-space: nowrap;
}
/* 两个 CTA 按钮不参与收缩（收缩会把按钮文字也压折行） */
.main-nav .nav-cta { flex: 0 0 auto; }
.main-nav a:hover { color: #fff; background: rgba(255, 255, 255, .07); }
.main-nav a.active { color: var(--cyan); font-weight: 600; background: rgba(34, 224, 245, .1); }
.header-right { display: flex; align-items: center; gap: 14px; }
.tel { display: flex; align-items: center; gap: 7px; color: #fff; }
.tel b { font-size: 15.5px; letter-spacing: .4px; }
.tel svg { color: var(--cyan); }

.menu-toggle {
  display: none; width: 42px; height: 42px; border: 1px solid var(--line);
  background: rgba(255, 255, 255, .05); border-radius: 10px; cursor: pointer;
  padding: 12px 10px; flex-direction: column; justify-content: space-between;
}
.menu-toggle span { display: block; height: 2px; background: var(--ink); border-radius: 2px; }
.nav-mask { display: none; position: fixed; inset: 0; background: rgba(2, 8, 16, .66); backdrop-filter: blur(3px); z-index: 75; }

/* ── Hero ─────────────────────────────── */
.hero {
  position: relative; overflow: hidden; color: #fff;
  padding: 168px 0 92px; min-height: 640px;
  background: #040a13 url("/images/hero-tech.jpg") 78% center / cover no-repeat;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(700px 340px at 90% 82%, rgba(34, 224, 245, .22), transparent 66%),
    linear-gradient(100deg, rgba(4, 10, 19, .97) 0%, rgba(4, 10, 19, .92) 34%, rgba(6, 30, 54, .62) 62%, rgba(4, 10, 19, .42) 100%);
}
.hero::after {
  content: ""; position: absolute; inset: 0; opacity: .16;
  background-image:
    linear-gradient(rgba(120, 205, 255, .55) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 205, 255, .55) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: linear-gradient(to bottom, #000 0%, transparent 88%);
  animation: gridDrift 22s linear infinite;
}
@keyframes gridDrift {
  0% { background-position: 0 0, 0 0; }
  100% { background-position: 0 54px, 54px 0; }
}
.hero .container { position: relative; z-index: 3; }

/* 鼠标跟随光晕 */
.hero-glow {
  position: absolute; z-index: 1; width: 560px; height: 560px; border-radius: 50%;
  left: 0; top: 0; margin: -280px 0 0 -280px; pointer-events: none; opacity: 0;
  transition: opacity .45s;
  background: radial-gradient(circle, rgba(34, 224, 245, .17) 0%, rgba(61, 139, 255, .09) 40%, transparent 66%);
}
.hero:hover .hero-glow { opacity: 1; }

.hero-kicker {
  display: inline-flex; align-items: center; gap: 9px; font-size: 12.8px; letter-spacing: .6px;
  padding: 7px 16px 7px 12px; border-radius: 999px;
  background: rgba(34, 224, 245, .09); border: 1px solid rgba(34, 224, 245, .38);
  color: #a9ecf7; margin-bottom: 24px; backdrop-filter: blur(6px);
}
.hero-kicker::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--cyan);
  box-shadow: 0 0 12px 3px rgba(34, 224, 245, .85); animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .45; transform: scale(.78); }
}
.hero h1 {
  font-size: 46px; line-height: 1.22; margin-bottom: 20px; letter-spacing: -1px;
  background: linear-gradient(96deg, #ffffff 8%, #d6ecff 42%, #8fe6f7 96%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  text-shadow: 0 4px 40px rgba(0, 0, 0, .35);
  max-width: 920px;
}

/* 首屏扫描线 */
.hero .scanline {
  position: absolute; left: 0; right: 0; height: 1px; z-index: 2; pointer-events: none;
  background: linear-gradient(90deg, transparent, rgba(34, 224, 245, .55), transparent);
  animation: scan 7s linear infinite;
}
@keyframes scan {
  0% { top: 12%; opacity: 0; }
  12% { opacity: .9; }
  88% { opacity: .9; }
  100% { top: 92%; opacity: 0; }
}
.hero-sub { font-size: 17.5px; color: rgba(216, 236, 255, .82); max-width: 640px; margin-bottom: 34px; }
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-tags { margin-top: 32px; display: flex; gap: 10px; flex-wrap: wrap; max-width: 680px; }
.hero-tags span {
  font-size: 13px; padding: 7px 14px; border-radius: 9px;
  background: rgba(12, 32, 56, .55); border: 1px solid rgba(120, 200, 255, .22);
  backdrop-filter: blur(8px); color: rgba(219, 240, 255, .92); transition: .2s;
}
.hero-tags span:hover { border-color: rgba(34, 224, 245, .55); color: #fff; transform: translateY(-2px); }

/* 数据条 */
.stats {
  position: relative; z-index: 4; margin-top: -46px;
  display: grid; grid-template-columns: repeat(4, 1fr);
  background: linear-gradient(180deg, rgba(255, 255, 255, .07), rgba(255, 255, 255, .03));
  border: 1px solid var(--line); border-radius: 18px; overflow: hidden;
  backdrop-filter: blur(14px); box-shadow: var(--shadow-lg);
}
.stats::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 2px; background: var(--grad-line); }
.stats div { padding: 26px 16px; text-align: center; border-right: 1px solid var(--line); position: relative; }
.stats div:last-child { border-right: none; }
.stats div::after {
  content: ""; position: absolute; left: 50%; top: 0; width: 0; height: 2px;
  transform: translateX(-50%); background: var(--grad-line); transition: width .3s;
}
.stats div:hover::after { width: 62%; }
.stats b {
  display: block; font-size: 32px; letter-spacing: -.6px;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stats span { font-size: 13px; color: var(--ink-2); }

/* ── 通用区块 ─────────────────────────── */
.section { padding: 74px 0; position: relative; }
.section-alt::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, .022) 40%, transparent);
}
.sec-head { text-align: center; margin-bottom: 42px; }
.sec-kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12px; font-weight: 800; letter-spacing: 3px; margin-bottom: 12px;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
  text-transform: uppercase;
}
.sec-kicker::before, .sec-kicker::after {
  content: ""; width: 26px; height: 1px; background: var(--grad-line); opacity: .7;
}
.sec-head h2 { font-size: 30px; margin-bottom: 12px; color: #fff; }
.sec-head p { color: var(--ink-2); max-width: 660px; margin: 0 auto; font-size: 15px; }

/* ── 栅格 ─────────────────────────────── */
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }

/* 玻璃卡片通用（产品 / 方案 / 新闻） */
.pcard, .scard, .case-card, .content, .info-card, .form-card, .dl-item, .faq-item, .cat-desc, .gallery {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  backdrop-filter: blur(10px);
}

/* ── 产品卡片 ─────────────────────────── */
.pcard {
  overflow: hidden; transition: .28s cubic-bezier(.3, .8, .3, 1);
  display: flex; flex-direction: column; position: relative;
}
.pcard::before {
  content: ""; position: absolute; inset: -1px; border-radius: var(--radius); padding: 1px;
  background: var(--grad); opacity: 0; transition: opacity .28s; pointer-events: none;
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
}
.pcard:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg), 0 0 0 1px rgba(34, 224, 245, .12); }
.pcard:hover::before { opacity: 1; }
.pcard-img { position: relative; aspect-ratio: 4/3; overflow: hidden; background: linear-gradient(140deg, #0a1a2e, #071426); }
.pcard-img::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(5, 12, 22, .55), transparent 60%);
}
.pcard-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.pcard:hover .pcard-img img { transform: scale(1.06); }
.ph {
  width: 100%; height: 100%; display: grid; place-items: center; position: relative;
  background:
    radial-gradient(320px 150px at 68% 24%, rgba(34, 224, 245, .18), transparent 62%),
    linear-gradient(140deg, #0c1e36 0%, #071426 100%);
  color: #cfe6ff;
}
.ph::before {
  content: ""; position: absolute; inset: 0; opacity: .35;
  background-image:
    linear-gradient(rgba(120, 200, 255, .22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 200, 255, .22) 1px, transparent 1px);
  background-size: 26px 26px;
}
.ph::after {
  content: ""; position: absolute; inset: 15% 19%;
  border: 1px dashed rgba(34, 224, 245, .22); border-radius: 6px;
  box-shadow: inset 0 0 44px rgba(34, 224, 245, .07);
}
.ph > div { position: relative; text-align: center; }
.ph span { font-size: 21px; font-weight: 800; letter-spacing: 1.5px; color: #e6f5ff; }
.ph small { display: block; font-size: 11.5px; color: var(--ink-3); margin-top: 5px; letter-spacing: .5px; }

.pcard-body { padding: 17px 19px 20px; flex: 1; display: flex; flex-direction: column; }
.pcard-model {
  display: inline-block; font-size: 11.5px; font-weight: 700; color: #7ee9f8;
  background: var(--grad-soft); border: 1px solid rgba(34, 224, 245, .26);
  padding: 3px 9px; border-radius: 6px; margin-bottom: 10px; align-self: flex-start; letter-spacing: .4px;
}
.pcard-body h3 { font-size: 16.5px; margin-bottom: 8px; color: #fff; line-height: 1.45; }
.pcard-body p {
  font-size: 13.5px; color: var(--ink-2); margin-bottom: 15px; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.pcard-more { font-size: 13.5px; color: var(--cyan); font-weight: 600; transition: .2s; }
.pcard:hover .pcard-more { gap: 8px; }

/* ── 分类筛选 ─────────────────────────── */
.cat-tabs { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 28px; }
.cat-tabs a {
  padding: 9px 19px; border-radius: 999px;
  background: rgba(255, 255, 255, .04); border: 1px solid var(--line);
  font-size: 14px; color: var(--ink-2); transition: .22s; backdrop-filter: blur(6px);
}
.cat-tabs a:hover { border-color: var(--cyan); color: var(--cyan); transform: translateY(-2px); }
.cat-tabs a.on {
  background: var(--grad); border-color: transparent; color: #04121f; font-weight: 700; box-shadow: var(--glow);
}
.cat-desc { padding: 18px 22px; margin-bottom: 26px; color: var(--ink-2); font-size: 14.5px; }

/* ── 页面标题条 ───────────────────────── */
.pagehead {
  position: relative; overflow: hidden; color: #fff; padding: 152px 0 52px;
  background: linear-gradient(115deg, #040a13 0%, #071c33 52%, #0a2c49 100%);
}
.pagehead::before {
  content: ""; position: absolute; inset: 0; opacity: .5;
  background:
    radial-gradient(600px 260px at 86% 14%, rgba(34, 224, 245, .34), transparent 66%),
    linear-gradient(rgba(140, 210, 255, .16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140, 210, 255, .16) 1px, transparent 1px);
  background-size: auto, 50px 50px, 50px 50px;
}
.pagehead::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: var(--grad-line); }
.pagehead .scanline {
  position: absolute; left: 0; right: 0; height: 1px; z-index: 1; pointer-events: none;
  background: linear-gradient(90deg, transparent, rgba(34, 224, 245, .5), transparent);
  animation: scan 6s linear infinite;
}
@media (prefers-reduced-motion: reduce) {
  .hero .scanline, .pagehead .scanline { display: none; }
}
.pagehead .container { position: relative; z-index: 2; }
.pagehead h1 { font-size: 33px; margin-bottom: 10px; }
.pagehead p { color: rgba(214, 234, 255, .76); font-size: 15px; max-width: 720px; }
.crumb { font-size: 13px; color: rgba(160, 200, 240, .68); margin-bottom: 12px; }
.crumb a:hover { color: var(--cyan); }

/* ── 产品详情 ─────────────────────────── */
.detail { display: grid; grid-template-columns: 1.05fr 1fr; gap: 36px; align-items: start; }
.gallery { overflow: hidden; }
.gallery-main { aspect-ratio: 4/3; background: linear-gradient(140deg, #0a1a2e, #071426); }
.gallery-main img { width: 100%; height: 100%; object-fit: cover; }
.gallery-thumbs { display: flex; gap: 8px; padding: 10px; overflow-x: auto; }
.gallery-thumbs div {
  width: 68px; height: 54px; flex-shrink: 0; border-radius: 8px; overflow: hidden;
  background: #0a1a2e; cursor: pointer; border: 2px solid transparent; transition: .2s;
}
.gallery-thumbs div:hover { border-color: var(--cyan); }
.gallery-thumbs img { width: 100%; height: 100%; object-fit: cover; }

.detail-info h1 { font-size: 27px; margin-bottom: 12px; color: #fff; }
.detail-tag { font-size: 15px; color: var(--ink-2); margin-bottom: 18px; }
.detail-summary {
  background: var(--grad-soft); border: 1px solid var(--line);
  border-left: 2px solid var(--cyan); border-radius: 12px;
  padding: 17px 20px; font-size: 14.5px; color: #cfe3f8; margin-bottom: 22px;
}
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 26px; }

.spec-table { width: 100%; border-collapse: collapse; font-size: 14px; overflow: hidden; border-radius: 12px; }
.spec-table th {
  background: rgba(255, 255, 255, .05); text-align: left; padding: 13px 17px; font-weight: 600;
  color: #dcecff; width: 34%; border-bottom: 1px solid var(--line);
}
.spec-table td { padding: 13px 17px; border-bottom: 1px solid var(--line); color: var(--ink-2); background: rgba(255, 255, 255, .02); }
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: none; }
.spec-table tr:hover td { color: #fff; }

.block-title { font-size: 19px; margin: 36px 0 16px; padding-left: 14px; position: relative; color: #fff; }
.block-title::before {
  content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 4px; height: 20px; border-radius: 3px; background: var(--grad);
  box-shadow: 0 0 14px rgba(34, 224, 245, .6);
}
.feat-list { display: grid; grid-template-columns: 1fr 1fr; gap: 11px 22px; }
.feat-list li { position: relative; padding-left: 20px; font-size: 14.5px; color: var(--ink-2); }
.feat-list li::before {
  content: ""; position: absolute; left: 4px; top: 10px; width: 7px; height: 7px;
  border-radius: 50%; background: var(--grad); box-shadow: 0 0 10px rgba(34, 224, 245, .75);
}
.tag-row { display: flex; flex-wrap: wrap; gap: 9px; }
.tag-row span {
  font-size: 13px; padding: 6px 13px; border-radius: 8px;
  background: var(--grad-soft); border: 1px solid rgba(34, 224, 245, .22); color: #86e3f5;
}

/* ── CTA ──────────────────────────────── */
.cta-box {
  position: relative; overflow: hidden; margin-top: 36px; color: #fff;
  background: linear-gradient(115deg, #061a30 0%, #082a4c 55%, #0a3556 100%);
  border: 1px solid var(--line); border-radius: 20px; padding: 36px 38px;
  display: flex; align-items: center; justify-content: space-between; gap: 22px; flex-wrap: wrap;
  box-shadow: var(--shadow-lg);
}
.cta-box::before {
  content: ""; position: absolute; inset: 0; opacity: .5;
  background:
    radial-gradient(520px 220px at 92% 8%, rgba(34, 224, 245, .38), transparent 66%),
    linear-gradient(rgba(140, 210, 255, .12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140, 210, 255, .12) 1px, transparent 1px);
  background-size: auto, 46px 46px, 46px 46px;
}
.cta-box > * { position: relative; z-index: 2; }
.cta-box h3 { font-size: 21px; margin-bottom: 8px; }
.cta-box p { color: rgba(216, 236, 255, .78); font-size: 14px; margin: 0; }

/* ── 解决方案卡片 ─────────────────────── */
.scard {
  padding: 27px 25px; transition: .28s cubic-bezier(.3, .8, .3, 1);
  display: flex; flex-direction: column; position: relative; overflow: hidden;
}
.scard::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 2px;
  background: var(--grad); opacity: 0; transition: .25s;
}
.scard::after {
  content: ""; position: absolute; right: -40px; top: -40px; width: 140px; height: 140px;
  background: radial-gradient(circle, rgba(34, 224, 245, .22), transparent 68%);
  opacity: 0; transition: .3s;
}
.scard:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: var(--line-2); }
.scard:hover::before { opacity: 1; }
.scard:hover::after { opacity: 1; }
.scard h3 { font-size: 18px; margin-bottom: 10px; color: #fff; }
.scard p { font-size: 14px; color: var(--ink-2); flex: 1; }
.scard ul { margin-top: 15px; }
.scard li { font-size: 13.5px; color: var(--ink-2); padding-left: 17px; position: relative; margin-bottom: 7px; }
.scard li::before { content: ""; position: absolute; left: 0; top: 9px; width: 7px; height: 1px; background: var(--cyan); }

/* 能力卡（图标） */
.cap-card {
  position: relative; padding: 26px 22px; border-radius: var(--radius);
  background: var(--card); border: 1px solid var(--line); backdrop-filter: blur(10px);
  transition: .28s; overflow: hidden;
}
.cap-card:hover { transform: translateY(-5px); border-color: rgba(34, 224, 245, .4); box-shadow: 0 18px 44px rgba(0, 0, 0, .45); }
.cap-ico {
  width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; margin-bottom: 15px;
  background: var(--grad-soft); border: 1px solid rgba(34, 224, 245, .28); color: var(--cyan);
  box-shadow: inset 0 0 22px rgba(34, 224, 245, .12);
}
.cap-ico svg { width: 23px; height: 23px; }
.cap-card h3 { font-size: 16.5px; margin-bottom: 8px; color: #fff; }
.cap-card p { font-size: 13.5px; color: var(--ink-2); margin: 0; }

/* ── 平台截图 ─────────────────────────── */
.shot {
  position: relative; border-radius: 18px; overflow: hidden;
  border: 1px solid rgba(34, 224, 245, .24);
  box-shadow: 0 26px 70px rgba(0, 0, 0, .55), 0 0 0 1px rgba(61, 139, 255, .1);
  background: #05101d; margin-bottom: 14px;
}
.shot::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 2px; background: var(--grad-line); z-index: 2; }
.shot img { width: 100%; display: block; }
.shot .cover-demo {
  position: absolute; right: 13px; top: 15px; z-index: 2; font-size: 11px; padding: 4px 11px;
  border-radius: 999px; background: rgba(4, 12, 22, .7); color: #9fe4f2;
  border: 1px solid rgba(34, 224, 245, .3); backdrop-filter: blur(6px);
}
.shot-cap { font-size: 13px; color: var(--ink-3); text-align: center; margin: 0 0 36px; }

/* ── 案例 ─────────────────────────────── */
.case-card { overflow: hidden; transition: .28s; }
.case-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: var(--line-2); }
.case-cover {
  position: relative; aspect-ratio: 16/9; overflow: hidden;
  background: linear-gradient(140deg, #0c1e36, #071426); display: grid; place-items: center;
  color: var(--ink-3); font-size: 13px;
}
.case-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.case-card:hover .case-cover img { transform: scale(1.05); }
.case-cover .cover-demo {
  position: absolute; right: 11px; top: 11px; z-index: 2; font-size: 11px; padding: 4px 11px; border-radius: 999px;
  background: rgba(4, 12, 22, .7); color: #9fe4f2; border: 1px solid rgba(34, 224, 245, .3);
  backdrop-filter: blur(6px); letter-spacing: .3px;
}
.case-cover .cover-fade {
  position: absolute; inset: auto 0 0 0; height: 50%; z-index: 1;
  background: linear-gradient(to top, rgba(4, 10, 19, .78), transparent);
}
.case-body { padding: 20px 22px 24px; }
.case-body h3 { font-size: 17px; margin-bottom: 8px; color: #fff; }
.case-meta { font-size: 12.5px; color: var(--cyan); font-weight: 700; margin-bottom: 10px; letter-spacing: .5px; }
.case-body p { font-size: 14px; color: var(--ink-2); }

/* ── 内容页 ───────────────────────────── */
.content { padding: 34px 38px; font-size: 15px; color: #cbdcf0; }
.content h1 { font-size: 26px; margin-bottom: 10px; color: #fff; }
.content h2 { font-size: 20px; margin: 28px 0 12px; color: #fff; }
.content h3 { font-size: 17.5px; margin: 22px 0 10px; color: #fff; }
.content p { margin-bottom: 14px; }
.content ul { padding-left: 0; margin-bottom: 14px; }
.content li { padding-left: 20px; position: relative; margin-bottom: 8px; }
.content li::before {
  content: ""; position: absolute; left: 4px; top: 11px; width: 6px; height: 6px;
  border-radius: 50%; background: var(--grad); box-shadow: 0 0 8px rgba(34, 224, 245, .7);
}
.content table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 14px; }
.content th, .content td { border: 1px solid var(--line); padding: 11px 13px; text-align: left; }
.content th { background: rgba(255, 255, 255, .05); color: #dcecff; }
.meta-line { font-size: 13px; color: var(--ink-3); margin-bottom: 18px; }

/* ── FAQ ──────────────────────────────── */
.faq-item { margin-bottom: 12px; overflow: hidden; transition: .22s; }
.faq-item:hover { border-color: var(--line-2); }
.faq-item.open { border-color: rgba(34, 224, 245, .42); box-shadow: 0 8px 26px rgba(34, 224, 245, .1); }
.faq-q {
  padding: 17px 22px; font-weight: 600; font-size: 15.5px; color: #eaf5ff; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.faq-q::after {
  content: "+"; color: var(--cyan); font-size: 21px; font-weight: 400; transition: .25s;
}
.faq-item.open .faq-q::after { content: "−"; transform: rotate(180deg); }
.faq-a {
  max-height: 0; overflow: hidden; padding: 0 22px; font-size: 14.5px; color: var(--ink-2);
  transition: max-height .34s cubic-bezier(.2, .7, .3, 1), padding .34s cubic-bezier(.2, .7, .3, 1);
}
.faq-item.open .faq-a { padding-bottom: 20px; }
@media (prefers-reduced-motion: reduce) { .faq-a { transition: none; } }

/* ── 下载 ─────────────────────────────── */
.dl-list { display: grid; gap: 12px; }
.dl-item {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 17px 22px; transition: .22s;
}
.dl-item:hover { border-color: var(--line-2); box-shadow: var(--shadow); transform: translateY(-2px); }
.dl-item b { font-size: 15px; color: #fff; }
.dl-item span { font-size: 13px; color: var(--ink-3); display: block; margin-top: 3px; }

/* ── 关于 ─────────────────────────────── */
.info-card { padding: 27px 30px; }
.info-card dl { margin: 0; display: grid; grid-template-columns: 124px 1fr; gap: 12px 18px; font-size: 14.5px; }
.info-card dt { color: var(--ink-3); }
.info-card dd { margin: 0; color: #dbeaf9; }

.media-split { display: grid; grid-template-columns: 1.08fr 1fr; gap: 36px; align-items: center; }
.media-figure {
  position: relative; border-radius: 18px; overflow: hidden;
  border: 1px solid rgba(34, 224, 245, .2); box-shadow: 0 22px 56px rgba(0, 0, 0, .5);
}
.media-figure img { width: 100%; display: block; }
.media-figure::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(4, 10, 19, .5), transparent 58%);
}
.media-figure figcaption {
  position: absolute; left: 18px; bottom: 15px; z-index: 2; color: #fff; font-size: 13.5px;
  letter-spacing: .4px; text-shadow: 0 2px 10px rgba(0, 0, 0, .7);
}

/* ── 联系 ─────────────────────────────── */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: start; }
.form-card { padding: 30px 32px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 14px; margin-bottom: 7px; color: var(--ink-2); }
.field input, .field textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 11px; padding: 12px 15px;
  font-size: 15px; font-family: inherit; color: var(--ink);
  background: rgba(255, 255, 255, .04); outline: none; transition: .22s;
}
.field input::placeholder, .field textarea::placeholder { color: var(--ink-3); }
.field input:focus, .field textarea:focus {
  border-color: var(--cyan); background: rgba(255, 255, 255, .07);
  box-shadow: 0 0 0 3px rgba(34, 224, 245, .14);
}
.field textarea { min-height: 112px; resize: vertical; }
.form-ok {
  background: rgba(34, 197, 128, .13); border: 1px solid rgba(34, 197, 128, .38);
  color: #6ee7a8; padding: 13px 17px; border-radius: 11px; margin-bottom: 18px; font-size: 14px;
}
.form-err {
  background: rgba(255, 107, 107, .12); border: 1px solid rgba(255, 107, 107, .34);
  color: #ff9d9d; padding: 13px 17px; border-radius: 11px; margin-bottom: 18px; font-size: 14px;
}

/* ── 页脚 ─────────────────────────────── */
.site-footer {
  position: relative; margin-top: 30px; padding-bottom: 76px;
  background: linear-gradient(180deg, rgba(4, 10, 19, .4), #040a13 60%);
  border-top: 1px solid var(--line);
  color: rgba(210, 232, 250, .7);
}
.site-footer::before { content: ""; position: absolute; left: 0; right: 0; top: -1px; height: 2px; background: var(--grad-line); }
.footer-top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.3fr; gap: 36px; padding: 52px 20px 34px; }
.f-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 15px; color: #fff; }
.f-brand b { font-size: 17px; }
.f-about p { font-size: 13.5px; }
.f-sub { font-size: 12.5px; color: var(--ink-3); }
.site-footer h4 { color: #fff; font-size: 15px; margin-bottom: 15px; position: relative; padding-left: 12px; }
.site-footer h4::before {
  content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 3px; height: 14px; border-radius: 2px; background: var(--grad);
}
.site-footer ul li { margin-bottom: 9px; }
.site-footer ul a { font-size: 13.5px; opacity: .78; transition: .2s; }
.site-footer ul a:hover { opacity: 1; color: var(--cyan); }
.f-contact p { font-size: 13.5px; margin-bottom: 7px; }
.f-tel { font-size: 18px !important; color: #fff; font-weight: 700; }
.f-qr { width: 96px; margin-top: 12px; border-radius: 10px; background: #fff; padding: 4px; }
.footer-bottom {
  border-top: 1px solid var(--line); padding: 18px 20px;
  display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; font-size: 12.5px; color: var(--ink-3);
}
.footer-bottom a:hover { color: var(--cyan); }

/* ── 移动端底部条 ─────────────────────── */
.mobile-bar {
  display: none; position: fixed; left: 0; right: 0; bottom: 0; z-index: 78;
  background: rgba(6, 14, 26, .92); backdrop-filter: blur(16px);
  border-top: 1px solid var(--line); box-shadow: 0 -6px 24px rgba(0, 0, 0, .45);
  padding-bottom: env(safe-area-inset-bottom);
}
.mobile-bar a { flex: 1; text-align: center; padding: 12px 0; font-size: 14px; color: var(--ink-2); font-weight: 600; }
.mobile-bar a.hot { background: var(--grad); color: #04121f; font-weight: 700; }

/* ── 滚动揭示动画 ─────────────────────── */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s cubic-bezier(.2, .7, .3, 1), transform .7s cubic-bezier(.2, .7, .3, 1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero::after { animation: none; }
  .hero-kicker::before { animation: none; }
}

/* ══ 交互增强 v1 ══════════════════════════ */
/* 页面进入淡入（仅透明度，不影响 fixed 定位） */
@keyframes fxFadeIn { from { opacity: 0; } to { opacity: 1; } }
body { animation: fxFadeIn .45s ease both; }

/* 锚点定位避开固定顶栏 */
.section, .pagehead, [id] { scroll-margin-top: 96px; }

/* 键盘焦点可见 */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--cyan); outline-offset: 2px;
}

/* ── 顶部滚动进度条 ───────────────────── */
.fx-progress {
  position: fixed; top: 0; left: 0; height: 2px; width: 0; z-index: 84;
  background: var(--grad-line); box-shadow: 0 0 12px rgba(34, 224, 245, .65);
  pointer-events: none;
}

/* ── 返回顶部（带进度环） ─────────────── */
.fx-top {
  position: fixed; right: 22px; bottom: 26px; width: 48px; height: 48px; z-index: 90;
  border-radius: 50%; border: 1px solid var(--line-2); cursor: pointer;
  background: rgba(6, 16, 30, .82); backdrop-filter: blur(12px);
  color: var(--cyan); display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none; transform: translateY(16px) scale(.86);
  transition: opacity .3s, transform .3s cubic-bezier(.2, .8, .3, 1), border-color .3s, box-shadow .3s;
}
.fx-top.show { opacity: 1; pointer-events: auto; transform: none; }
.fx-top:hover { border-color: var(--cyan); box-shadow: 0 0 22px rgba(34, 224, 245, .35); }
.fx-top svg { position: absolute; inset: 0; transform: rotate(-90deg); }
.fx-top .fx-ring-bg { fill: none; stroke: rgba(120, 190, 255, .18); stroke-width: 2; }
.fx-top .fx-ring {
  fill: none; stroke: var(--cyan); stroke-width: 2; stroke-linecap: round;
  transition: stroke-dashoffset .12s linear;
  filter: drop-shadow(0 0 4px rgba(34, 224, 245, .55));
}
.fx-top span { font-size: 17px; font-weight: 700; line-height: 1; }

/* ── 光标光点 / 光环 ──────────────────── */
.fx-cursor, .fx-cursor-ring {
  position: fixed; top: 0; left: 0; z-index: 9999; pointer-events: none;
  border-radius: 50%; opacity: 0; transition: opacity .3s, width .22s, height .22s, margin .22s, border-color .22s, background .22s;
}
.fx-cursor {
  width: 6px; height: 6px; margin: -3px 0 0 -3px;
  background: var(--cyan); box-shadow: 0 0 12px rgba(34, 224, 245, .9);
}
.fx-cursor-ring {
  width: 34px; height: 34px; margin: -17px 0 0 -17px;
  border: 1px solid rgba(34, 224, 245, .45);
}
.fx-cursor.on, .fx-cursor-ring.on { opacity: 1; }
.fx-cursor-ring.hot {
  width: 54px; height: 54px; margin: -27px 0 0 -27px;
  border-color: var(--cyan); background: rgba(34, 224, 245, .07);
}
.fx-cursor-ring.press { width: 26px; height: 26px; margin: -13px 0 0 -13px; background: rgba(34, 224, 245, .16); }

/* ── 图片灯箱 ─────────────────────────── */
.zoomable { cursor: zoom-in; }
.fx-lb {
  position: fixed; inset: 0; z-index: 120; display: flex; align-items: center; justify-content: center;
  background: rgba(2, 7, 14, .94); backdrop-filter: blur(8px);
  opacity: 0; pointer-events: none; transition: opacity .28s;
}
.fx-lb.show { opacity: 1; pointer-events: auto; }
.fx-lb .lb-img {
  max-width: 88vw; max-height: 82vh; border-radius: 14px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, .7), 0 0 0 1px rgba(120, 190, 255, .18);
  opacity: 0; transform: scale(.95); transition: opacity .3s, transform .34s cubic-bezier(.2, .8, .3, 1);
}
.fx-lb .lb-img.in { opacity: 1; transform: scale(1); }
.fx-lb .lb-close, .fx-lb .lb-prev, .fx-lb .lb-next {
  position: absolute; border: 1px solid var(--line-2); background: rgba(255, 255, 255, .06);
  color: #dff0ff; cursor: pointer; border-radius: 50%; transition: .22s;
  display: flex; align-items: center; justify-content: center;
}
.fx-lb .lb-close { top: 24px; right: 28px; width: 42px; height: 42px; font-size: 24px; }
.fx-lb .lb-prev, .fx-lb .lb-next { top: 50%; margin-top: -24px; width: 48px; height: 48px; font-size: 30px; }
.fx-lb .lb-prev { left: 26px; }
.fx-lb .lb-next { right: 26px; }
.fx-lb .lb-close:hover, .fx-lb .lb-prev:hover, .fx-lb .lb-next:hover {
  border-color: var(--cyan); color: var(--cyan); background: rgba(34, 224, 245, .12);
}
.fx-lb .lb-count {
  position: absolute; bottom: 26px; left: 0; right: 0; text-align: center;
  font-size: 13px; color: var(--ink-2); letter-spacing: 1px;
}

/* ── 轻提示 toast ─────────────────────── */
.fx-toast {
  position: fixed; left: 50%; bottom: 46px; z-index: 130;
  transform: translate(-50%, 18px); opacity: 0; pointer-events: none;
  padding: 11px 20px; border-radius: 11px; font-size: 14px;
  background: rgba(8, 20, 36, .95); border: 1px solid rgba(34, 224, 245, .4);
  color: #e9f3ff; box-shadow: 0 14px 40px rgba(0, 0, 0, .55);
  transition: opacity .26s, transform .26s cubic-bezier(.2, .8, .3, 1);
}
.fx-toast.show { opacity: 1; transform: translate(-50%, 0); }
.fx-toast.warn { border-color: rgba(255, 138, 155, .55); color: #ffd9de; }

/* ── 图片加载渐显 ─────────────────────── */
img.fx-img { opacity: 0; filter: blur(8px); transition: opacity .55s ease, filter .55s ease, transform .5s; }
img.fx-img.ready { opacity: 1; filter: none; }

/* ── 水波反馈 ─────────────────────────── */
.fx-ripple {
  position: absolute; border-radius: 50%; pointer-events: none;
  background: radial-gradient(circle, rgba(255, 255, 255, .42), rgba(255, 255, 255, 0) 70%);
  transform: scale(0); animation: fxRipple .6s ease-out forwards;
}
@keyframes fxRipple { to { transform: scale(2.4); opacity: 0; } }

/* ── 首屏打字机 ───────────────────────── */
.hero-rotator {
  margin-top: 22px; display: flex; align-items: center; gap: 9px;
  font-size: 14px; color: var(--ink-2);
}
.hero-rotator .hr-label { color: var(--ink-3); }
.hero-rotator .hr-words { color: var(--cyan); font-weight: 700; letter-spacing: .3px; }
.hr-caret {
  display: inline-block; width: 2px; height: 15px; background: var(--cyan);
  vertical-align: -2px; box-shadow: 0 0 8px rgba(34, 224, 245, .8);
  animation: hrBlink 1s steps(2, start) infinite;
}
@keyframes hrBlink { 50% { opacity: 0; } }

/* ── 导航滑动指示条 ───────────────────── */
.main-nav ul { position: relative; }
.nav-ind {
  position: absolute; bottom: 3px; height: 2px; border-radius: 2px;
  background: var(--grad-line); box-shadow: 0 0 10px rgba(34, 224, 245, .5);
  opacity: 0; pointer-events: none;
  transition: left .3s cubic-bezier(.3, .8, .3, 1), width .3s cubic-bezier(.3, .8, .3, 1), opacity .3s;
}
.nav-ind.on { opacity: 1; }

/* ── 可复制项 ─────────────────────────── */
[data-copy] { cursor: copy; transition: color .2s; }
[data-copy]:hover { color: var(--cyan); }

/* ── 表单校验反馈 ─────────────────────── */
.field input.fx-ok, .field textarea.fx-ok { border-color: rgba(34, 224, 245, .6); }
.field input.fx-bad, .field textarea.fx-bad { border-color: #ff6b81; }
.fx-hint { display: block; font-size: 12px; margin-top: 5px; color: #ff8a9b; }
.btn.fx-loading { opacity: .7; pointer-events: none; }

/* ── 细节：特性列表与参数表 ───────────── */
.feat-list li { transition: color .2s; cursor: default; }
.feat-list li::before { transition: background .2s, box-shadow .2s; }
.feat-list li:hover { color: #fff; }
.feat-list li:hover::before { background: var(--blue); box-shadow: 0 0 8px rgba(61, 139, 255, .9); }
.spec-table tr { transition: background .2s; }
.spec-table tr:hover { background: rgba(34, 224, 245, .06); }
.gallery-thumbs div.on { border-color: var(--cyan); box-shadow: 0 0 0 1px var(--cyan); }
@keyframes fxSwap { from { opacity: .35; transform: scale(1.02); } to { opacity: 1; transform: none; } }
.gallery-main.fx-swap img { animation: fxSwap .4s ease; }

/* ── 降低动效偏好 ─────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .fx-cursor, .fx-cursor-ring, .fx-ripple, .hr-caret { display: none !important; }
  img.fx-img { opacity: 1; filter: none; }
  .fx-lb .lb-img { opacity: 1; transform: none; transition: none; }
}

/* ── 触屏：关闭鼠标专属效果 ───────────── */
@media (hover: none), (pointer: coarse) {
  .fx-cursor, .fx-cursor-ring { display: none !important; }
  .fx-top { bottom: 96px; right: 14px; width: 44px; height: 44px; }
}

/* ── 响应式 ───────────────────────────── */
/* 顶部导航共 7 项 + 2 个按钮，宽度不足时先收起顶栏电话（页脚与联系页仍可见），
   避免导航被挤压折行 */
@media (max-width: 1240px) {
  .header-right .tel { display: none; }
}
/* 平板横屏及以下：导航切换为抽屉式。
   ⚠️ 此断点需与 public/js/site.js 中的 NAV_BP 保持一致 */
@media (max-width: 1100px) {
  .main-nav {
    position: fixed; top: 0; right: 0; bottom: 0; width: 78%; max-width: 330px;
    background: rgba(6, 14, 26, .97); backdrop-filter: blur(18px);
    flex-direction: column; align-items: stretch; justify-content: flex-start;
    gap: 0; padding: 88px 22px 22px; transform: translateX(105%); transition: transform .28s cubic-bezier(.3, .8, .3, 1);
    box-shadow: -10px 0 40px rgba(0, 0, 0, .5); z-index: 76; overflow-y: auto;
    border-left: 1px solid var(--line);
  }
  .main-nav.open { transform: translateX(0); }
  .main-nav ul { flex-direction: column; gap: 0; }
  .main-nav li { border-bottom: 1px solid var(--line); }
  .main-nav li a { display: block; padding: 15px 4px; font-size: 16px; border-radius: 0; }
  .main-nav a.active { background: transparent; color: var(--cyan); }
  .nav-cta { margin-top: 20px; width: 100%; }
  .menu-toggle { display: flex; z-index: 80; }
  .nav-mask.show { display: block; }
}
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(3, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 860px) {
  .hero { background-position: 74% center; padding: 132px 0 76px; min-height: 0; }
  .hero::before {
    background:
      radial-gradient(440px 240px at 78% 30%, rgba(34, 224, 245, .16), transparent 66%),
      linear-gradient(180deg, rgba(4, 10, 19, .95) 0%, rgba(4, 10, 19, .86) 55%, rgba(4, 10, 19, .96) 100%);
  }
  .hero h1 { font-size: 29px; letter-spacing: -.5px; }
  .hero-sub { font-size: 15px; }
  .stats { grid-template-columns: repeat(2, 1fr); margin-top: -32px; }
  .stats div:nth-child(2) { border-right: none; }
  .stats div:nth-child(1), .stats div:nth-child(2) { border-bottom: 1px solid var(--line); }
  .section { padding: 48px 0; }
  .sec-head h2 { font-size: 24px; }
  .pagehead { padding: 124px 0 38px; }
  .pagehead h1 { font-size: 24px; }
  .grid-4, .grid-3, .grid-2 { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .detail { grid-template-columns: 1fr; gap: 24px; }
  .feat-list { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .media-split { grid-template-columns: 1fr; gap: 22px; }
  .content { padding: 24px 20px; }
  .cta-box { padding: 26px 22px; }
  .shot { border-radius: 14px; margin-bottom: 24px; }
  .shot-cap { margin: -12px 0 24px; }
  .info-card dl { grid-template-columns: 96px 1fr; }
  .mobile-bar { display: flex; }
  .site-footer { padding-bottom: 96px; }
  .fx-top { bottom: 92px; right: 14px; width: 44px; height: 44px; }
  .hero-rotator { font-size: 13px; margin-top: 16px; }
}
@media (max-width: 560px) {
  .container { padding: 0 14px; }
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 26px; }
  .hero-btns .btn { flex: 1; }
  .hero h1 { font-size: 26px; }
  .stats b { font-size: 26px; }
}

/* ══════════════ 技术文档区（技术支持页）══════════════ */
.doc-filter {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  margin: 4px 0 26px; padding: 14px 18px;
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
}
.doc-filter input {
  flex: 1; min-width: 220px; height: 40px; padding: 0 14px;
  background: rgba(255, 255, 255, .05); border: 1px solid var(--line);
  border-radius: 10px; color: var(--ink); font-size: 14.5px; font-family: inherit;
  transition: .2s;
}
.doc-filter input::placeholder { color: var(--ink-3); }
.doc-filter input:focus {
  outline: none; border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(34, 224, 245, .14); background: rgba(255, 255, 255, .08);
}
.doc-count { font-size: 13px; color: var(--ink-3); white-space: nowrap; }

.doc-group { margin-bottom: 30px; }
.doc-group h4 {
  display: flex; align-items: center; gap: 9px; margin: 0 0 14px;
  font-size: 15.5px; font-weight: 700; color: #dff1ff;
}
.doc-group h4 i {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 22px; height: 22px; padding: 0 6px; border-radius: 11px;
  background: var(--grad-soft); border: 1px solid var(--line-2);
  font-size: 12px; font-style: normal; color: var(--cyan);
}
.doc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }

.doc-card {
  display: flex; flex-direction: column; gap: 8px; position: relative;
  padding: 20px 20px 18px; border-radius: var(--radius);
  background: var(--card); border: 1px solid var(--line);
  text-decoration: none; color: inherit; overflow: hidden;
  transition: .24s cubic-bezier(.3, .8, .3, 1);
}
.doc-card::before {
  content: ""; position: absolute; inset: 0; opacity: 0; transition: opacity .24s;
  background: radial-gradient(320px 160px at 15% 0%, rgba(61, 139, 255, .16), transparent 70%);
}
.doc-card:hover {
  transform: translateY(-4px); border-color: var(--line-2);
  box-shadow: var(--shadow-lg);
}
.doc-card:hover::before { opacity: 1; }
.doc-ico {
  position: relative; display: inline-flex; align-items: center; justify-content: center;
  width: 42px; height: 42px; border-radius: 12px; margin-bottom: 4px;
  background: var(--grad-soft); border: 1px solid var(--line-2); color: var(--cyan);
}
.doc-ico svg { width: 21px; height: 21px; }
.doc-card b { position: relative; font-size: 15px; color: #fff; line-height: 1.5; }
.doc-desc {
  position: relative; font-size: 13.2px; color: var(--ink-2); line-height: 1.65;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.doc-meta {
  position: relative; display: flex; align-items: center; gap: 8px;
  margin-top: auto; padding-top: 6px; font-size: 12.5px; font-style: normal; color: var(--ink-3);
}
.doc-tag {
  padding: 1px 8px; border-radius: 20px; font-size: 11.5px;
  background: rgba(34, 224, 245, .12); border: 1px solid rgba(34, 224, 245, .28); color: var(--cyan);
}
.doc-go {
  position: relative; display: inline-flex; align-items: center; gap: 5px;
  margin-top: 2px; font-size: 13px; font-weight: 600; color: var(--cyan-l, var(--cyan));
}
.doc-card:hover .doc-go { color: #fff; }
.doc-go svg { transition: transform .24s; }
.doc-card:hover .doc-go svg { transform: translate(2px, -2px); }
.doc-none {
  padding: 26px; text-align: center; color: var(--ink-3); font-size: 14px;
  background: var(--panel); border: 1px dashed var(--line-2); border-radius: 14px;
}

/* ══════════════ 物联网平台入口 ══════════════ */
.btn-login {
  display: inline-flex; align-items: center; gap: 6px;
  height: 38px; padding: 0 16px; border-radius: 9px; font-size: 14px; font-weight: 600;
  color: #04121f; background: var(--grad); border: none; cursor: pointer;
  box-shadow: var(--glow); transition: .24s cubic-bezier(.3, .8, .3, 1);
}
.btn-login svg { width: 15px; height: 15px; }
.btn-login:hover { transform: translateY(-2px); box-shadow: 0 14px 32px rgba(61, 139, 255, .42); }

.plat-band {
  display: grid; grid-template-columns: 1fr auto; gap: 26px; align-items: center;
  padding: 30px 34px; margin-top: 26px; border-radius: 20px;
  border: 1px solid var(--line-2);
  background:
    radial-gradient(520px 240px at 100% 0%, rgba(34, 224, 245, .14), transparent 68%),
    linear-gradient(115deg, rgba(61, 139, 255, .14) 0%, rgba(34, 224, 245, .08) 100%);
  box-shadow: var(--shadow);
}
.plat-band .plat-txt h3 { margin: 0 0 6px; font-size: 19px; color: #fff; }
.plat-band .plat-txt h3 span { color: var(--cyan); }
.plat-band .plat-txt p { margin: 0; font-size: 14px; color: var(--ink-2); }
.plat-band .plat-txt .plat-sub {
  display: inline-block; margin-bottom: 8px; padding: 2px 10px; border-radius: 20px;
  font-size: 12px; color: var(--cyan);
  background: rgba(34, 224, 245, .12); border: 1px solid rgba(34, 224, 245, .28);
}
.plat-actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.plat-note { font-size: 12.5px; color: var(--ink-3); }

@media (max-width: 900px) {
  .doc-grid { grid-template-columns: repeat(2, 1fr); }
  .plat-band { grid-template-columns: 1fr; padding: 24px 22px; gap: 18px; }
}
@media (max-width: 560px) {
  .doc-grid { grid-template-columns: 1fr; }
  .doc-filter { padding: 12px 14px; }
  .plat-actions .btn { flex: 1; }
}