@charset "utf-8";
/* ============================================================
   奇妙电子 · 全新官网样式
   风格：深空科技暗色 + 青紫渐变
   ============================================================ */

:root {
  --bg: #060a15;
  --bg-2: #0a1122;
  --card: #0f1830;
  --card-2: #0c1526;
  --line: rgba(140, 170, 255, 0.14);
  --line-strong: rgba(140, 170, 255, 0.28);
  --txt: #eaf1ff;
  --sub: #9db0d4;
  --dim: #64749a;
  --cyan: #2fe6ff;
  --violet: #8b5cff;
  --green: #3af0b6;
  --amber: #ffc860;
  --grad: linear-gradient(98deg, #2fe6ff 0%, #8b5cff 100%);
  --radius: 16px;
  --header-h: 72px;
  --shadow: 0 18px 50px -18px rgba(0, 0, 0, 0.65);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  background: var(--bg);
  color: var(--txt);
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg, video { max-width: 100%; }
a { color: var(--cyan); text-decoration: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5 { font-weight: 700; line-height: 1.3; }

::selection { background: rgba(47, 230, 255, 0.28); }

/* ============================================================
   全局氛围背景层（网格底纹 + 漂浮光斑 + 颗粒噪点）
   ============================================================ */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    linear-gradient(var(--line) 1px, transparent 1px) 0 0 / 100% 44px,
    linear-gradient(90deg, var(--line) 1px, transparent 1px) 0 0 / 44px 100%;
  opacity: 0.45;
  -webkit-mask-image: radial-gradient(120% 90% at 50% 0%, #000 30%, transparent 100%);
  mask-image: radial-gradient(120% 90% at 50% 0%, #000 30%, transparent 100%);
}
.bg-ambient {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}
.bg-ambient span {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  will-change: transform;
}
.bg-ambient .b1 {
  width: 46vw; height: 46vw; min-width: 380px; min-height: 380px;
  left: -12vw; top: -10vh;
  background: radial-gradient(circle, rgba(47, 230, 255, 0.20), transparent 68%);
  animation: drift-a 26s ease-in-out infinite alternate;
}
.bg-ambient .b2 {
  width: 52vw; height: 52vw; min-width: 420px; min-height: 420px;
  right: -16vw; top: 24vh;
  background: radial-gradient(circle, rgba(139, 92, 255, 0.20), transparent 68%);
  animation: drift-b 32s ease-in-out infinite alternate;
}
.bg-ambient .b3 {
  width: 40vw; height: 40vw; min-width: 340px; min-height: 340px;
  left: 28vw; bottom: -18vh;
  background: radial-gradient(circle, rgba(58, 240, 182, 0.10), transparent 68%);
  animation: drift-c 38s ease-in-out infinite alternate;
}
.bg-ambient::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.5;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3CfeComponentTransfer%3E%3CfeFuncA type='linear' slope='0.05'/%3E%3C/feComponentTransfer%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
@keyframes drift-a { to { transform: translate(16vw, 22vh) scale(1.15); } }
@keyframes drift-b { to { transform: translate(-18vw, -12vh) scale(1.2); } }
@keyframes drift-c { to { transform: translate(10vw, -18vh) scale(0.9); } }

/* 滚动进度条 */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0;
  z-index: 120;
  background: var(--grad);
  box-shadow: 0 0 12px rgba(47, 230, 255, 0.7);
  border-radius: 0 99px 99px 0;
  pointer-events: none;
}

.container {
  width: min(1200px, 92vw);
  margin: 0 auto;
}

/* ---------- 渐变文字（带流光） ---------- */
.grad-text {
  background: linear-gradient(100deg, #2fe6ff 0%, #8b5cff 25%, #2fe6ff 50%, #8b5cff 75%, #2fe6ff 100%);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: grad-slide 7.5s linear infinite;
}
@keyframes grad-slide { to { background-position: -200% 0; } }

/* ============================================================
   顶部导航
   ============================================================ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  z-index: 100;
  display: flex;
  align-items: center;
  transition: background 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
  border-bottom: 1px solid transparent;
  background: linear-gradient(180deg, rgba(6, 10, 21, 0.85), rgba(6, 10, 21, 0));
}
.site-header.scrolled {
  background: rgba(7, 11, 23, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--line);
  box-shadow: 0 10px 30px -18px rgba(0, 0, 0, 0.8);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

/* ============================================================
   CSS 文字 Logo（复刻原版式：奇妙电子 | 专业智能化解决方案供应商）
   ============================================================ */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  color: inherit;
  animation: lg-boot 0.9s ease both;
}
.brand:hover { color: inherit; }
.lg-name {
  font-size: 23px;
  font-weight: 800;
  letter-spacing: 0.4em;
  margin-right: -0.4em; /* 抵消末字后的字距，保证与分隔线间距均匀 */
  white-space: nowrap;
  background: linear-gradient(104deg, #ffffff 38%, #2fe6ff 46%, #8b5cff 51%, #ffffff 59%);
  background-size: 280% 100%;
  background-position: 118% 0;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 9px rgba(47, 230, 255, 0.22));
  animation: lg-shine 6.5s 1.4s ease-in-out infinite;
  transition: filter 0.35s ease;
}
.lg-sep {
  width: 2px;
  height: 22px;
  flex: none;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cyan), var(--violet));
  box-shadow: 0 0 10px rgba(47, 230, 255, 0.55);
  transform-origin: center;
  animation: lg-sep-in 0.55s 0.55s cubic-bezier(0.2, 0.9, 0.2, 1) both, lg-glow 3.4s 1.2s ease-in-out infinite;
  transition: box-shadow 0.35s ease;
}
.lg-slogan {
  font-size: 12.5px;
  letter-spacing: 2.5px;
  color: #d5e2ff;
  white-space: nowrap;
  animation: lg-boot 0.8s 0.35s ease both;
}
.brand:hover .lg-name { filter: drop-shadow(0 0 13px rgba(139, 92, 255, 0.5)); }
.brand:hover .lg-sep { box-shadow: 0 0 16px rgba(139, 92, 255, 0.8); }
@keyframes lg-shine {
  0%   { background-position: 118% 0; }
  32%  { background-position: -18% 0; }
  100% { background-position: -18% 0; }
}
@keyframes lg-glow { 50% { opacity: 0.6; } }
@keyframes lg-sep-in { from { transform: scaleY(0); } to { transform: scaleY(1); } }
@keyframes lg-boot {
  from { opacity: 0; filter: blur(7px) brightness(2.2); }
  to   { opacity: 1; filter: none; }
}
.brand-sm { gap: 12px; }
.brand-sm .lg-name { font-size: 17px; letter-spacing: 0.34em; margin-right: -0.34em; }
.brand-sm .lg-sep { height: 17px; }
.brand-sm .lg-slogan { font-size: 10.5px; letter-spacing: 1.5px; }

/* ============================================================
   主导航（含下拉子菜单）
   ============================================================ */
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  color: var(--sub);
  font-size: 15px;
  padding: 8px 14px;
  border-radius: 999px;
  transition: color 0.25s, background 0.25s;
  white-space: nowrap;
  display: inline-block;
}
.main-nav a:hover { color: var(--txt); background: rgba(140, 170, 255, 0.08); }
.main-nav a.active { color: var(--txt); background: rgba(47, 230, 255, 0.12); box-shadow: inset 0 0 0 1px rgba(47, 230, 255, 0.35); }
.nav-item { position: relative; display: flex; }
.nav-item > a.has-sub::after {
  content: "";
  display: inline-block;
  margin-left: 8px;
  vertical-align: 2px;
  border: 4px solid transparent;
  border-top-color: currentColor;
  transition: transform 0.25s;
}
.nav-item:hover > a.has-sub::after { transform: rotate(180deg) translateY(4px); }
.submenu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 208px;
  padding: 10px;
  display: grid;
  gap: 2px;
  background: rgba(10, 16, 32, 0.97);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
  z-index: 60;
}
.submenu::before { content: ""; position: absolute; top: -10px; left: 0; right: 0; height: 10px; }
.nav-item:hover .submenu, .nav-item:focus-within .submenu { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.submenu a { border-radius: 10px; padding: 10px 14px; font-size: 14px; }
.submenu a small { display: block; color: var(--dim); font-size: 11.5px; margin-top: 1px; }
.submenu a:hover small { color: var(--sub); }
.main-nav > a.nav-cta {
  color: #04121c;
  font-weight: 700;
  background: var(--grad);
  padding: 9px 22px;
  margin-left: 10px;
  position: relative;
  overflow: hidden;
}
.main-nav > a.nav-cta::after {
  content: "";
  position: absolute;
  top: -25%; bottom: -25%;
  left: -60%;
  width: 45%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.6), transparent);
  transform: skewX(-22deg);
  animation: btn-sheen 4.6s 1.2s ease-in-out infinite;
}
.main-nav > a.nav-cta:hover { filter: brightness(1.12); box-shadow: 0 6px 22px -6px rgba(47, 230, 255, 0.6); }

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: transparent;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 20px; height: 2px;
  border-radius: 2px;
  background: var(--txt);
  transition: transform 0.3s, opacity 0.3s;
}
body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  padding: calc(var(--header-h) + 72px) 0 96px;
  text-align: center;
  overflow: hidden;
  background:
    radial-gradient(1100px 520px at 78% -10%, rgba(139, 92, 255, 0.16), transparent 62%),
    radial-gradient(1100px 520px at 12% 8%, rgba(47, 230, 255, 0.13), transparent 60%),
    linear-gradient(180deg, #081020 0%, var(--bg) 100%);
}
.hero .net-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 2; }
.hero-badge { animation: hero-rise 0.7s 0.1s ease both; }
.hero h1 { animation: hero-rise 0.75s 0.22s ease both; }
.hero-sub { animation: hero-rise 0.75s 0.36s ease both; }
.hero-cta { animation: hero-rise 0.75s 0.5s ease both; }
.hero-stats { animation: hero-rise 0.8s 0.62s ease both; }
@keyframes hero-rise {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: none; }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  letter-spacing: 2px;
  color: var(--cyan);
  border: 1px solid rgba(47, 230, 255, 0.35);
  background: rgba(47, 230, 255, 0.07);
  padding: 8px 20px;
  border-radius: 999px;
  margin-bottom: 30px;
}
.hero-badge::before {
  content: "";
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
  animation: pulse 2.2s infinite;
}
@keyframes pulse { 50% { opacity: 0.35; } }

.hero h1 {
  font-size: clamp(38px, 6vw, 72px);
  letter-spacing: 2px;
  line-height: 1.22;
}
.hero h1 .line-2 { display: block; margin-top: 6px; }
.hero-sub {
  max-width: 760px;
  margin: 26px auto 0;
  color: var(--sub);
  font-size: clamp(15px, 1.6vw, 18px);
}
.hero-cta {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 40px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 700;
  position: relative;
  overflow: hidden;
  transition: transform 0.25s, filter 0.25s, background 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--grad); color: #04121c; box-shadow: 0 10px 30px -10px rgba(47, 230, 255, 0.5); }
.btn-primary:hover { filter: brightness(1.12); box-shadow: 0 14px 36px -10px rgba(47, 230, 255, 0.65); }
.btn-primary::after {
  content: "";
  position: absolute;
  top: -25%; bottom: -25%;
  left: -60%;
  width: 45%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.55), transparent);
  transform: skewX(-22deg);
  animation: btn-sheen 3.8s ease-in-out infinite;
}
@keyframes btn-sheen { 0%, 55% { left: -60%; } 85%, 100% { left: 130%; } }
.btn-ghost { border: 1px solid var(--line-strong); color: var(--txt); background: rgba(140, 170, 255, 0.05); }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); box-shadow: 0 0 24px -6px rgba(47, 230, 255, 0.4); }

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 0;
  margin-top: 64px;
  border-top: 1px solid var(--line);
  padding-top: 40px;
}
.hstat { flex: 1 1 180px; max-width: 220px; position: relative; }
.hstat::after {
  content: "";
  position: absolute;
  left: 50%; bottom: -14px;
  transform: translateX(-50%);
  width: 0; height: 2px;
  border-radius: 2px;
  background: var(--grad);
  box-shadow: 0 0 12px rgba(47, 230, 255, 0.6);
  transition: width 0.45s ease;
}
.hstat:hover::after { width: 62%; }
.hstat b {
  display: block;
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 800;
  letter-spacing: 1px;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hstat i { font-style: normal; }
.hstat small { display: block; margin-top: 6px; color: var(--dim); font-size: 13.5px; }

/* ============================================================
   通用 Section
   ============================================================ */
.section { padding: 96px 0; position: relative; }
.section.alt {
  background:
    radial-gradient(rgba(140, 170, 255, 0.05) 1px, transparent 1.4px) 0 0 / 26px 26px,
    var(--bg-2);
}
.section.alt::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong) 18%, var(--line-strong) 82%, transparent);
}
.section-head { text-align: center; max-width: 820px; margin: 0 auto 56px; }
.kicker {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 4px;
  color: var(--cyan);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.section-head h2 { font-size: clamp(26px, 3.4vw, 40px); letter-spacing: 1px; }
.section-head .under {
  position: relative;
  width: 64px; height: 4px;
  border-radius: 4px;
  background: var(--grad);
  margin: 18px auto 0;
}
.section-head .under::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--grad);
  filter: blur(8px);
  opacity: 0.5;
  animation: under-glow 3s ease-in-out infinite;
}
@keyframes under-glow { 50% { opacity: 0.95; } }
.section-head p { margin-top: 18px; color: var(--sub); }

/* ============================================================
   卡片与网格
   ============================================================ */
.grid { display: grid; gap: 22px; }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background:
    radial-gradient(340px circle at var(--mx, -9999px) var(--my, -9999px), rgba(47, 230, 255, 0.07), transparent 62%),
    linear-gradient(165deg, var(--card) 0%, var(--card-2) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 28px;
  position: relative;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: var(--grad);
  opacity: 0;
  transition: opacity 0.3s;
}
.card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(115deg, transparent 34%, rgba(190, 225, 255, 0.07) 46%, rgba(190, 225, 255, 0.13) 50%, rgba(190, 225, 255, 0.07) 54%, transparent 66%);
  transform: translateX(-110%);
  transition: transform 0.9s cubic-bezier(0.25, 0.6, 0.3, 1);
}
.card:hover {
  transform: translateY(-5px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow), 0 0 32px -8px rgba(47, 230, 255, 0.25);
}
.card:hover::before { opacity: 1; }
.card:hover::after { transform: translateX(110%); }

.card-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(47, 230, 255, 0.08);
  border: 1px solid rgba(47, 230, 255, 0.25);
  color: var(--cyan);
  margin-bottom: 18px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.card:hover .card-icon { transform: translateY(-3px) scale(1.06); box-shadow: 0 10px 26px -10px rgba(47, 230, 255, 0.45); }
.card-icon svg { width: 26px; height: 26px; }
.card h3 { font-size: 19px; margin-bottom: 10px; }
.card h3 a { color: var(--txt); }
.card h3 a:hover { color: var(--cyan); }
.card p { color: var(--sub); font-size: 14.5px; }
.card .card-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 14px;
  color: var(--cyan);
}
.card .card-more::after { content: "→"; transition: transform 0.25s; }
.card:hover .card-more::after { transform: translateX(4px); }

/* ============================================================
   理念三卡（首页）
   ============================================================ */
.belief-card { text-align: left; }
.belief-card .bnum {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--dim);
  margin-bottom: 12px;
}
.belief-card .bnum em {
  font-style: normal;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ============================================================
   全链路流程
   ============================================================ */
.chain {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
  counter-reset: step;
}
.chain-step {
  position: relative;
  background: linear-gradient(165deg, var(--card), var(--card-2));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 60px 18px 24px;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.chain-step:hover { transform: translateY(-5px); border-color: rgba(47, 230, 255, 0.4); box-shadow: 0 0 30px -8px rgba(47, 230, 255, 0.3), var(--shadow); }
.chain-step::before {
  counter-increment: step;
  content: "0" counter(step);
  position: absolute;
  top: 18px; left: 18px;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--cyan);
  background: rgba(47, 230, 255, 0.08);
  border: 1px solid rgba(47, 230, 255, 0.28);
  padding: 3px 12px;
  border-radius: 999px;
  transition: box-shadow 0.3s, background 0.3s;
}
.chain-step:hover::before { box-shadow: 0 0 16px rgba(47, 230, 255, 0.55); background: rgba(47, 230, 255, 0.16); }
.chain-step h3 { font-size: 16.5px; margin-bottom: 8px; }
.chain-step p { font-size: 13px; color: var(--sub); line-height: 1.65; }
.chain-step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -12px;
  width: 8px; height: 8px;
  border-top: 2px solid var(--line-strong);
  border-right: 2px solid var(--line-strong);
  transform: rotate(45deg);
  z-index: 2;
}

/* ============================================================
   案例卡片
   ============================================================ */
.case-card { display: flex; flex-direction: column; }
.case-card .case-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}
.case-num {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: 1px;
  background: linear-gradient(120deg, rgba(47, 230, 255, 0.9), rgba(139, 92, 255, 0.9));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
}
.tag {
  display: inline-block;
  font-size: 12px;
  color: var(--sub);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 3px 12px;
  white-space: nowrap;
}
.case-card h3 { font-size: 18.5px; margin-bottom: 10px; }
.case-card .case-desc { color: var(--sub); font-size: 14px; flex: 1; }

/* 智能家居产品图卡片 */
.prod-card { gap: 0; }
.prod-card .case-top { margin: 0 0 14px; }
.prod-thumb {
  position: relative;
  margin: 0 0 18px;
  border-radius: 14px;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
}
.prod-thumb img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.prod-card:hover .prod-thumb img { transform: scale(1.04); }
.prod-feats { list-style: none; margin: 0 0 16px; padding: 0; display: grid; gap: 6px; }
.prod-feats li {
  color: var(--sub);
  font-size: 13px;
  padding-left: 16px;
  position: relative;
}
.prod-feats li::before {
  content: "";
  position: absolute;
  left: 0; top: 7px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: linear-gradient(120deg, var(--cyan), var(--violet));
}
.case-chip {
  margin-top: 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  color: var(--green);
  background: rgba(58, 240, 182, 0.07);
  border: 1px solid rgba(58, 240, 182, 0.28);
  padding: 6px 14px;
  border-radius: 999px;
  width: fit-content;
}
.case-chip.violet { color: var(--violet); background: rgba(139, 92, 255, 0.09); border-color: rgba(139, 92, 255, 0.35); }
.case-chip.cyan { color: var(--cyan); background: rgba(47, 230, 255, 0.07); border-color: rgba(47, 230, 255, 0.3); }
.case-chip.amber { color: var(--amber); background: rgba(255, 200, 96, 0.07); border-color: rgba(255, 200, 96, 0.3); }
.case-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }

/* 案例筛选 */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 40px;
}
.filter-bar button {
  font-family: inherit;
  font-size: 14px;
  color: var(--sub);
  background: rgba(140, 170, 255, 0.05);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 20px;
  cursor: pointer;
  transition: all 0.25s;
}
.filter-bar button:hover { color: var(--txt); border-color: var(--line-strong); }
.filter-bar button.on {
  color: #04121c;
  font-weight: 700;
  background: var(--grad);
  border-color: transparent;
}
.card-hidden { display: none !important; }
.grid.anim .card { animation: pop 0.45s ease both; }
@keyframes pop {
  from { opacity: 0; transform: translateY(14px) scale(0.98); }
  to { opacity: 1; transform: none; }
}

/* ============================================================
   客户
   ============================================================ */
.customer-note {
  text-align: center;
  color: var(--dim);
  font-size: 13px;
  margin-top: 26px;
}
.customer-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
}
.customer {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(165deg, var(--card), var(--card-2));
  padding: 26px 12px;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.customer::before {
  content: "";
  position: absolute;
  top: -10%; bottom: -10%;
  left: -40%;
  width: 32%;
  background: linear-gradient(100deg, transparent, rgba(190, 225, 255, 0.1), transparent);
  transform: skewX(-20deg);
  transition: left 0.7s cubic-bezier(0.25, 0.6, 0.3, 1);
  pointer-events: none;
}
.customer:hover { transform: translateY(-4px); border-color: rgba(139, 92, 255, 0.5); box-shadow: var(--shadow); }
.customer:hover::before { left: 120%; }
.customer:hover b { filter: drop-shadow(0 0 12px rgba(47, 230, 255, 0.5)); }
.customer b { display: block; font-size: 19px; letter-spacing: 2px; transition: filter 0.3s ease; }
.customer small { display: block; margin-top: 6px; color: var(--dim); font-size: 12px; letter-spacing: 1px; }

/* ============================================================
   能力页：章节
   ============================================================ */
.cap-list { display: grid; gap: 8px; margin-bottom: 30px; }
.cap-chips {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.cap-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 16px;
  color: var(--txt);
  font-size: 14px;
  background: rgba(140, 170, 255, 0.04);
  transition: all 0.25s;
}
.cap-chip:hover { border-color: rgba(47, 230, 255, 0.5); background: rgba(47, 230, 255, 0.06); transform: translateY(-2px); }
.cap-chip i { font-style: normal; color: var(--cyan); font-weight: 800; font-size: 13px; }

.cap {
  padding: 70px 0;
  border-top: 1px solid var(--line);
}
.cap:first-of-type { border-top: none; }
.cap-head { display: flex; align-items: baseline; gap: 18px; margin-bottom: 14px; flex-wrap: wrap; }
.cap-no {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--cyan);
  background: rgba(47, 230, 255, 0.08);
  border: 1px solid rgba(47, 230, 255, 0.28);
  padding: 4px 14px;
  border-radius: 999px;
}
.cap h2 { font-size: clamp(22px, 2.6vw, 30px); }
.cap-lead { color: var(--sub); max-width: 780px; margin-bottom: 34px; }
.cap-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.cap-box {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(165deg, var(--card), var(--card-2));
  padding: 28px;
}
.cap-box h3 { font-size: 15px; letter-spacing: 2px; color: var(--cyan); margin-bottom: 18px; }
.cap-box.hi h3 { color: var(--violet); }
.cap-box li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 12px;
  color: var(--sub);
  font-size: 14.5px;
}
.cap-box li::before {
  content: "";
  position: absolute;
  left: 2px; top: 10px;
  width: 8px; height: 8px;
  border-radius: 3px;
  background: var(--grad);
}
.cap-box li b { color: var(--txt); }

/* 发明创造横幅 */
.invent-band {
  border-radius: 24px;
  padding: 56px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
  background:
    repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.028) 0 2px, transparent 2px 16px),
    radial-gradient(600px 260px at 18% 0%, rgba(47, 230, 255, 0.18), transparent 60%),
    radial-gradient(600px 260px at 82% 100%, rgba(139, 92, 255, 0.2), transparent 60%),
    linear-gradient(120deg, #0b1a33, #131033);
  border: 1px solid var(--line-strong);
}
.invent-band::after {
  content: "";
  position: absolute;
  top: -40%; bottom: -40%;
  left: -30%;
  width: 26%;
  background: linear-gradient(100deg, transparent, rgba(160, 220, 255, 0.07), transparent);
  transform: skewX(-18deg);
  animation: band-sheen 9s ease-in-out infinite;
  pointer-events: none;
}
@keyframes band-sheen { 0%, 60% { left: -30%; } 90%, 100% { left: 120%; } }
.invent-band h2 { font-size: clamp(24px, 3vw, 36px); margin-bottom: 14px; }
.invent-band p { color: var(--sub); max-width: 720px; margin: 0 auto 28px; text-wrap: balance; }

/* ============================================================
   关于页
   ============================================================ */
.about-hero {
  padding: calc(var(--header-h) + 70px) 0 60px;
  background:
    radial-gradient(900px 420px at 50% -14%, rgba(47, 230, 255, 0.14), transparent 62%),
    linear-gradient(180deg, #081020, var(--bg));
  text-align: center;
}
.about-hero h1 { font-size: clamp(30px, 4.6vw, 52px); }
.about-hero p { color: var(--sub); max-width: 860px; margin: 22px auto 0; font-size: 16.5px; }

.prose { max-width: 860px; margin: 0 auto; }
.prose p { color: var(--sub); margin-bottom: 18px; font-size: 15.5px; }
.prose p b, .prose p strong { color: var(--txt); }

.phase-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.phase {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(165deg, var(--card), var(--card-2));
  padding: 30px 26px;
}
.phase small { display: block; color: var(--dim); letter-spacing: 3px; font-size: 12px; margin-bottom: 12px; }
.phase h3 { font-size: 18px; margin-bottom: 10px; }
.phase p { color: var(--sub); font-size: 14px; }

.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-bottom: 40px; }
.contact-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(165deg, var(--card), var(--card-2));
  padding: 30px 26px;
  text-align: center;
}
.contact-card .card-icon { margin: 0 auto 16px; }
.contact-card h3 { font-size: 16px; margin-bottom: 6px; }
.contact-card p { color: var(--sub); font-size: 14.5px; }
.contact-card a { font-weight: 700; }

/* ============================================================
   CTA 横幅 / 页脚
   ============================================================ */
.cta-band {
  text-align: center;
  padding: 88px 0;
  background:
    radial-gradient(700px 300px at 50% 120%, rgba(139, 92, 255, 0.22), transparent 65%),
    radial-gradient(700px 300px at 50% -30%, rgba(47, 230, 255, 0.15), transparent 65%),
    var(--bg-2);
  border-top: 1px solid var(--line);
}
.cta-band h2 { font-size: clamp(24px, 3.2vw, 38px); margin-bottom: 14px; }
.cta-band p { color: var(--sub); margin-bottom: 30px; }

.site-footer {
  border-top: 1px solid var(--line);
  background: #04070f;
  padding: 64px 0 0;
  position: relative;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: -1px; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(47, 230, 255, 0.65), rgba(139, 92, 255, 0.65), transparent);
  background-size: 220% 100%;
  animation: line-flow 8s linear infinite;
}
@keyframes line-flow { to { background-position: 220% 0; } }
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}
.f-about img { height: 32px; margin-bottom: 18px; }
.f-about .brand { margin-bottom: 18px; }
.f-about p { color: var(--dim); font-size: 13.5px; max-width: 320px; }
.site-footer h4 { font-size: 15px; letter-spacing: 2px; margin-bottom: 18px; color: var(--txt); }
.site-footer li { margin-bottom: 10px; }
.site-footer li a { color: var(--dim); font-size: 14px; transition: color 0.25s; }
.site-footer li a:hover { color: var(--cyan); }
.f-contact li { color: var(--dim); font-size: 14px; margin-bottom: 12px; padding-left: 20px; position: relative; }
.f-contact li::before { content: "·"; position: absolute; left: 4px; color: var(--cyan); }
.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 22px 0;
  text-align: center;
  color: var(--dim);
  font-size: 13px;
}
.footer-bottom a { color: var(--dim); }
.footer-bottom a:hover { color: var(--cyan); }

/* ============================================================
   方案页：子频道导览卡
   ============================================================ */
.track-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.track-card { display: flex; flex-direction: column; }
.track-card .tk-no {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 3px;
  color: var(--dim);
  margin-bottom: 14px;
}
.track-card h3 { font-size: 21px; margin-bottom: 12px; }
.track-card .tk-items { margin: 6px 0 18px; flex: 1; }
.track-card .tk-items li {
  position: relative;
  padding-left: 20px;
  color: var(--sub);
  font-size: 14px;
  margin-bottom: 8px;
}
.track-card .tk-items li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--cyan);
  font-weight: 700;
}

/* ============================================================
   对比表 / 规格表
   ============================================================ */
.table-wrap {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: linear-gradient(165deg, var(--card), var(--card-2));
}
table.cmp { width: 100%; border-collapse: collapse; font-size: 14.5px; }
table.cmp caption { caption-side: top; text-align: left; padding: 18px 24px 6px; color: var(--dim); font-size: 13px; }
table.cmp th, table.cmp td { padding: 15px 22px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
table.cmp tr:last-child th, table.cmp tr:last-child td { border-bottom: none; }
table.cmp thead th { color: var(--txt); font-size: 15px; background: rgba(47, 230, 255, 0.05); }
table.cmp thead th.me { color: var(--cyan); }
table.cmp tbody th { color: var(--sub); font-weight: 700; white-space: nowrap; width: 1%; }
table.cmp td { color: var(--dim); }
table.cmp td.me { color: var(--txt); background: rgba(139, 92, 255, 0.05); }
table.cmp tbody tr { transition: background 0.3s; }
table.cmp tbody tr:hover td { background: rgba(47, 230, 255, 0.06); }
table.cmp tbody tr:hover td.me { background: rgba(139, 92, 255, 0.13); }
table.cmp tbody tr:hover th { color: var(--txt); }

/* ============================================================
   客户评价
   ============================================================ */
.quote-card { display: flex; flex-direction: column; }
.quote-card .qmark { font-size: 34px; line-height: 1; color: var(--cyan); font-family: Georgia, serif; margin-bottom: 10px; }
.quote-card p { color: var(--txt); font-size: 15px; flex: 1; }
.quote-card .qby { margin-top: 18px; color: var(--dim); font-size: 13px; }
.quote-card .qby b { color: var(--sub); }

/* ============================================================
   文章 / 资讯
   ============================================================ */
.post-card { display: flex; flex-direction: column; }
.post-card .pdate { color: var(--dim); font-size: 12.5px; letter-spacing: 1px; margin-bottom: 12px; }
.post-card .pdate em { font-style: normal; color: var(--cyan); margin-right: 10px; }
.post-card h3 { font-size: 18.5px; margin-bottom: 12px; }
.post-card p { color: var(--sub); font-size: 14.5px; flex: 1; }
.post-full { padding-top: 10px; }
.post-full .pf-body { max-width: 860px; margin: 0 auto; }
.post-full .pf-body p { color: var(--sub); margin-bottom: 16px; font-size: 15.5px; }
.post-full .pf-body p b, .post-full .pf-body strong { color: var(--txt); }
.post-full .pf-body h3 { margin: 34px 0 12px; font-size: 19px; }
.post-full .pf-body h3::before {
  content: "";
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 3px;
  background: var(--grad);
  margin-right: 12px;
  vertical-align: 2px;
}
.post-full .pf-body blockquote {
  border-left: 3px solid var(--cyan);
  padding: 6px 0 6px 20px;
  margin: 0 0 18px;
  color: var(--txt);
  background: rgba(47, 230, 255, 0.05);
  border-radius: 0 10px 10px 0;
}
.news-item {
  display: flex;
  gap: 26px;
  align-items: baseline;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(165deg, var(--card), var(--card-2));
  padding: 20px 26px;
  margin-bottom: 14px;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.news-item:hover { transform: translateX(8px); border-color: rgba(47, 230, 255, 0.4); box-shadow: var(--shadow); }
.news-item time { flex: none; color: var(--cyan); font-size: 13.5px; font-weight: 700; letter-spacing: 1px; min-width: 92px; }
.news-item p { color: var(--sub); font-size: 14.5px; }
.news-item p b { color: var(--txt); }

/* ============================================================
   工具频道
   ============================================================ */
.tool-hero {
  position: relative;
  border: 1px solid var(--line-strong);
  border-radius: 24px;
  overflow: hidden;
  background:
    repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.022) 0 2px, transparent 2px 15px),
    radial-gradient(700px 300px at 85% -10%, rgba(139, 92, 255, 0.2), transparent 60%),
    radial-gradient(700px 300px at 10% 110%, rgba(47, 230, 255, 0.14), transparent 60%),
    linear-gradient(150deg, #0d1730, #120f2c);
}
.tool-hero::before {
  content: "";
  position: absolute;
  top: -40%; bottom: -40%;
  left: -30%;
  width: 24%;
  background: linear-gradient(100deg, transparent, rgba(160, 220, 255, 0.06), transparent);
  transform: skewX(-18deg);
  animation: band-sheen 11s 2s ease-in-out infinite;
  pointer-events: none;
}
.tool-hero-in { display: grid; grid-template-columns: 1.25fr 1fr; gap: 34px; padding: 50px 46px; align-items: center; }
.tool-hero h2 { font-size: clamp(24px, 3vw, 34px); margin-bottom: 14px; }
.tool-hero p { color: var(--sub); font-size: 15px; }
.tool-meta { display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0 26px; }
.tool-meta span {
  font-size: 12.5px;
  color: var(--sub);
  border: 1px solid var(--line-strong);
  background: rgba(140, 170, 255, 0.06);
  padding: 5px 14px;
  border-radius: 999px;
}
.tool-panel {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(6, 10, 21, 0.65);
  padding: 24px;
  font-size: 13.5px;
}
.tool-panel h4 { color: var(--txt); font-size: 14px; margin-bottom: 14px; letter-spacing: 1px; }
.tool-flow { counter-reset: tf; display: grid; gap: 10px; }
.tool-flow li { position: relative; padding-left: 34px; color: var(--sub); }
.tool-flow li::before {
  counter-increment: tf;
  content: counter(tf, decimal-leading-zero);
  position: absolute;
  left: 0; top: 1px;
  font-size: 12px;
  font-weight: 800;
  color: var(--cyan);
  border: 1px solid rgba(47, 230, 255, 0.35);
  border-radius: 8px;
  width: 24px; height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.tool-incubate { opacity: 0.85; }
.soon-badge {
  display: inline-block;
  font-size: 11.5px;
  color: var(--amber);
  border: 1px solid rgba(255, 200, 96, 0.4);
  background: rgba(255, 200, 96, 0.08);
  border-radius: 999px;
  padding: 2px 12px;
  margin-bottom: 14px;
  letter-spacing: 2px;
}

/* ============================================================
   端边网云应用 架构层
   ============================================================ */
.arch { display: grid; gap: 14px; }
.arch-layer {
  display: grid;
  grid-template-columns: 150px 1fr;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: linear-gradient(165deg, var(--card), var(--card-2));
  transition: border-color 0.3s;
}
.arch-layer:hover { border-color: rgba(47, 230, 255, 0.4); }
.arch-layer .al-name {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  padding: 18px 22px;
  background: rgba(47, 230, 255, 0.05);
  border-right: 1px solid var(--line);
}
.arch-layer .al-name b { font-size: 16px; }
.arch-layer .al-name small { color: var(--dim); font-size: 11px; letter-spacing: 1.5px; text-transform: uppercase; }
.arch-layer .al-body { padding: 18px 22px; color: var(--sub); font-size: 14px; display: flex; align-items: center; }

/* ============================================================
   FAQ（原生 details 折叠）
   ============================================================ */
.faq { max-width: 860px; margin: 0 auto; }
.faq details {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(165deg, var(--card), var(--card-2));
  padding: 0 24px;
  margin-bottom: 12px;
  transition: border-color 0.3s;
}
.faq details[open] { border-color: rgba(47, 230, 255, 0.35); }
.faq summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px 0;
  font-weight: 700;
  font-size: 15.5px;
  color: var(--txt);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-size: 20px;
  font-weight: 400;
  color: var(--cyan);
  transition: transform 0.3s;
  flex: none;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq .faq-a { padding: 0 0 20px; color: var(--sub); font-size: 14.5px; border-top: 1px dashed var(--line); padding-top: 16px; }
.faq details[open] .faq-a { animation: faq-in 0.45s ease; }
@keyframes faq-in { from { opacity: 0; transform: translateY(-8px); } }

/* ============================================================
   联系表单
   ============================================================ */
.form-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(165deg, var(--card), var(--card-2));
  padding: 34px;
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.fld { display: flex; flex-direction: column; gap: 8px; }
.fld.full { grid-column: 1 / -1; }
.fld label { font-size: 13.5px; color: var(--sub); letter-spacing: 1px; }
.fld input, .fld select, .fld textarea {
  font-family: inherit;
  font-size: 15px;
  color: var(--txt);
  background: rgba(6, 10, 21, 0.7);
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  padding: 12px 16px;
  outline: none;
  transition: border-color 0.25s, box-shadow 0.25s;
}
.fld textarea { min-height: 118px; resize: vertical; }
.fld input:focus, .fld select:focus, .fld textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(47, 230, 255, 0.15);
}
.form-note { color: var(--dim); font-size: 12.5px; margin-top: 14px; }
.hp {
  position: absolute !important;
  left: -9999px !important;
  top: -9999px !important;
  width: 1px; height: 1px;
  opacity: 0;
  pointer-events: none;
}

/* ============================================================
   数据带
   ============================================================ */
.num-band { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.num-cell {
  text-align: center;
  padding: 26px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  position: relative;
  background:
    radial-gradient(300px circle at var(--mx, -9999px) var(--my, -9999px), rgba(139, 92, 255, 0.09), transparent 60%),
    linear-gradient(165deg, var(--card), var(--card-2));
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.num-cell:hover { transform: translateY(-4px); border-color: var(--line-strong); box-shadow: var(--shadow); }
.num-cell b {
  display: block;
  font-size: clamp(28px, 3.4vw, 42px);
  font-weight: 800;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.num-cell small { color: var(--dim); font-size: 13px; }

/* ============================================================
   流程时间轴（合作流程）
   ============================================================ */
.timeline { max-width: 860px; margin: 0 auto; position: relative; padding-left: 30px; }
.timeline::before { content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(180deg, var(--cyan), var(--violet), var(--cyan)); background-size: 100% 200%; opacity: 0.6; animation: flow 6s linear infinite; }
@keyframes flow { to { background-position: 0 -200%; } }
.tl-item { position: relative; padding: 0 0 34px 26px; }
.tl-item::before {
  content: "";
  position: absolute;
  left: -28px; top: 6px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--bg);
  border: 3px solid var(--cyan);
  box-shadow: 0 0 10px rgba(47, 230, 255, 0.6);
  animation: tl-pulse 2.8s ease-in-out infinite;
}
@keyframes tl-pulse { 50% { box-shadow: 0 0 0 7px rgba(47, 230, 255, 0.12), 0 0 16px rgba(47, 230, 255, 0.7); } }
.tl-item:nth-child(2)::before { animation-delay: 0.45s; }
.tl-item:nth-child(3)::before { animation-delay: 0.9s; }
.tl-item:nth-child(4)::before { animation-delay: 1.35s; }
.tl-item:nth-child(5)::before { animation-delay: 1.8s; }
.tl-item:nth-child(6)::before { animation-delay: 2.25s; }
.tl-item h3 { font-size: 17px; margin-bottom: 6px; }
.tl-item p { color: var(--sub); font-size: 14px; }
.tl-item small { color: var(--dim); font-size: 12px; letter-spacing: 1px; }

/* ============================================================
   滚动显现
   ============================================================ */
.reveal { opacity: 0; transform: translateY(26px) scale(0.985); transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }
.reveal[data-delay="4"] { transition-delay: 0.32s; }
.reveal[data-delay="5"] { transition-delay: 0.40s; }

/* ---------- 其余容器悬停微光 ---------- */
.cap-box, .contact-card, .phase, .arch-layer, .form-card {
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.cap-box:hover, .contact-card:hover, .phase:hover, .form-card:focus-within {
  border-color: var(--line-strong);
  box-shadow: 0 0 30px -10px rgba(47, 230, 255, 0.3), var(--shadow);
}
.contact-card:hover, .phase:hover { transform: translateY(-5px); }
.arch-layer:hover { box-shadow: 0 0 34px -12px rgba(47, 230, 255, 0.4); }
.case-card:hover .case-num { filter: drop-shadow(0 0 16px rgba(47, 230, 255, 0.5)); }
.case-num { transition: filter 0.35s ease; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1080px) {
  .grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .grid.cols-3 { grid-template-columns: repeat(2, 1fr); }
  .cap-chips { grid-template-columns: repeat(2, 1fr); }
  .chain { grid-template-columns: repeat(3, 1fr); }
  .chain-step:not(:last-child)::after { display: none; }
  .customer-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .track-grid { grid-template-columns: 1fr; }
  .num-band { grid-template-columns: repeat(2, 1fr); }
  .tool-hero-in { grid-template-columns: 1fr; padding: 40px 28px; }
}

@media (max-width: 760px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 14px 5vw 22px;
    background: rgba(7, 11, 23, 0.97);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
    transform: translateY(-130%);
    transition: transform 0.35s ease;
    z-index: 99;
    max-height: calc(100vh - var(--header-h));
    max-height: calc(100dvh - var(--header-h));
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  body.nav-open .main-nav { transform: none; }
  .main-nav::-webkit-scrollbar { display: none; }
  .main-nav a { padding: 13px 16px; border-radius: 12px; }
  .main-nav > a.nav-cta { margin: 10px 0 0; justify-content: center; display: flex; }
  .nav-item { flex-direction: column; align-items: stretch; width: 100%; }
  .nav-item > a.has-sub::after { display: none; }
  .submenu {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    background: transparent;
    border: none;
    box-shadow: none;
    backdrop-filter: none;
    padding: 0 0 6px 16px;
    min-width: 0;
  }
  .submenu a { border-left: 1px solid var(--line-strong); border-radius: 0 10px 10px 0; }

  .section { padding: 66px 0; }
  .hero { padding: calc(var(--header-h) + 46px) 0 70px; }
  .site-header .lg-name { font-size: 19px; letter-spacing: 0.3em; margin-right: -0.3em; }
  .site-header .lg-slogan { display: none; }
  .site-header .brand { gap: 0; }
  .grid.cols-2, .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr; }
  .cap-cols, .phase-row, .contact-grid { grid-template-columns: 1fr; }
  .cap-chips { grid-template-columns: 1fr; }
  .chain { grid-template-columns: 1fr 1fr; }
  .customer-grid { grid-template-columns: repeat(2, 1fr); }
  .invent-band { padding: 44px 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-badge::before { animation: none; }
  .brand, .lg-name, .lg-sep, .lg-slogan { animation: none; }
  .grad-text, .hero-badge, .hero h1, .hero-sub, .hero-cta, .hero-stats { animation: none; }
  .bg-ambient span, .bg-ambient::after { animation: none; }
  .section.alt::before, .site-footer::before, .timeline::before, .tl-item::before,
  .section-head .under::after, .btn-primary::after, .main-nav > a.nav-cta::after,
  .invent-band::after, .tool-hero::before { animation: none; }
  .card::after { display: none; }
  .btn::after { animation: none; }
}

/* 新增业务栏目后，中等屏宽提前切换为菜单，避免页头挤压。 */
@media (min-width:761px) and (max-width:1180px) {
  .nav-toggle{display:flex}
  .main-nav{position:fixed;top:var(--header-h);left:0;right:0;flex-direction:column;align-items:stretch;gap:2px;padding:14px 5vw 22px;background:rgba(7,11,23,.98);border-bottom:1px solid var(--line);transform:translateY(-130%);visibility:hidden;max-height:calc(100dvh - var(--header-h));overflow-y:auto;z-index:99}
  body.nav-open .main-nav{transform:none;visibility:visible}
  .main-nav a{padding:13px 16px;border-radius:12px}
  .main-nav>.nav-cta{margin:10px 0 0;display:flex;justify-content:center}
  .nav-item{flex-direction:column;align-items:stretch;width:100%}
  .nav-item>a.has-sub::after{display:none}
  .submenu{position:static;transform:none;opacity:1;visibility:visible;background:transparent;box-shadow:none;border:none;padding:0 0 6px 16px;min-width:0}
}
@media (min-width:1181px) {.site-header .header-inner{gap:16px}.main-nav a{padding-left:10px;padding-right:10px;font-size:14px}.site-header .brand{gap:10px}.site-header .lg-slogan{font-size:11px}}