/* =========================================================
   杭州途阳科技有限公司 官网样式
   ========================================================= */
:root {
  --bg: #050a16;
  --bg-2: #081026;
  --panel: rgba(14, 26, 52, .55);
  --line: rgba(125, 170, 255, .14);
  --line-2: rgba(125, 170, 255, .26);
  --text: #e7eefc;
  --muted: #93a3c4;
  --dim: #62739a;
  --cyan: #22d3ee;
  --blue: #3b82f6;
  --indigo: #818cf8;
  --amber: #fbbf24;
  --green: #34d399;
  --red: #f87171;
  --grad: linear-gradient(100deg, #22d3ee 0%, #3b82f6 55%, #818cf8 100%);
  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --num: "DIN Alternate", "Bahnschrift", "DIN Condensed", "Roboto Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;
  --nav-h: 72px;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--nav-h); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(900px 600px at 85% -10%, rgba(59, 130, 246, .14), transparent 60%),
    radial-gradient(800px 600px at -10% 40%, rgba(34, 211, 238, .08), transparent 60%),
    var(--bg);
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
h1, h2, h3, h4, h5 { margin: 0; line-height: 1.3; }
::selection { background: rgba(34, 211, 238, .35); color: #fff; }

.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.ico {
  width: 1.15em; height: 1.15em;
  fill: none; stroke: currentColor; stroke-width: 1.7;
  stroke-linecap: round; stroke-linejoin: round;
  flex-shrink: 0;
}
.container { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 28px; }

.gradient-text {
  background: var(--grad);
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: shine 6s linear infinite;
}

/* ---------- 按钮 ---------- */
.btn {
  position: relative;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 50px; padding: 0 26px;
  border-radius: 12px; border: 0;
  font-size: 15px; font-weight: 600; letter-spacing: .02em;
  cursor: pointer; overflow: hidden;
  transition: transform .25s, box-shadow .25s, background .25s, border-color .25s;
}
.btn .ico { transition: transform .25s; }
.btn:hover .ico { transform: translateX(3px); }
.btn-primary {
  color: #fff;
  background: var(--grad);
  background-size: 150% auto;
  box-shadow: 0 12px 34px -10px rgba(34, 211, 238, .6);
}
.btn-primary::after {
  content: "";
  position: absolute; top: 0; left: -80%;
  width: 50%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, .45), transparent);
  transform: skewX(-20deg);
  transition: left .6s;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 40px -10px rgba(34, 211, 238, .75); }
.btn-primary:hover::after { left: 130%; }
.btn-ghost {
  color: var(--text);
  background: rgba(255, 255, 255, .03);
  border: 1px solid var(--line-2);
  backdrop-filter: blur(6px);
}
.btn-ghost:hover { border-color: rgba(34, 211, 238, .6); background: rgba(34, 211, 238, .08); transform: translateY(-2px); }
.btn-sm { height: 40px; padding: 0 18px; font-size: 14px; border-radius: 10px; }
.btn-block { width: 100%; }

/* ---------- 开场加载 ---------- */
.loader { display: none; }
html.js .loader {
  position: fixed; inset: 0; z-index: 1000;
  display: grid; place-items: center;
  background: var(--bg);
  transition: opacity .6s ease, visibility .6s;
}
.loader.done { opacity: 0; visibility: hidden; }
.loader-inner { display: grid; justify-items: center; gap: 14px; }
.loader-logo { width: 84px; height: 84px; }
.loader-ring {
  fill: none; stroke: rgba(34, 211, 238, .8); stroke-width: 2;
  stroke-dasharray: 60 122; stroke-linecap: round;
  transform-origin: 32px 32px;
  animation: spin 1.1s linear infinite;
}
.loader-mark path {
  fill: none; stroke: #e6faff; stroke-width: 3.4; stroke-linecap: round;
  stroke-dasharray: 60; stroke-dashoffset: 60;
  animation: draw 1.2s ease forwards;
}
.loader-mark path:nth-child(2) { animation-delay: .15s; }
.loader-mark path:nth-child(3) { animation-delay: .3s; }
.loader-mark path:nth-child(4) { animation-delay: .45s; }
.loader-name { font-size: 18px; font-weight: 700; letter-spacing: .5em; padding-left: .5em; }
.loader-bar { width: 160px; height: 2px; border-radius: 2px; background: rgba(125, 170, 255, .15); overflow: hidden; }
.loader-bar i { display: block; height: 100%; width: 0; background: var(--grad); animation: load 1.4s ease forwards; }

/* ---------- 鼠标光晕 ---------- */
.cursor-glow {
  position: fixed; top: 0; left: 0; z-index: 0;
  width: 560px; height: 560px; margin: -280px 0 0 -280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34, 211, 238, .07), transparent 60%);
  pointer-events: none;
  opacity: 0;
  transition: opacity .4s;
  will-change: transform;
}
.cursor-glow.on { opacity: 1; }

/* ---------- 导航 ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  border-bottom: 1px solid transparent;
  transition: background .35s, border-color .35s, backdrop-filter .35s;
}
.nav.scrolled, .nav.open {
  background: rgba(5, 10, 22, .74);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  border-bottom-color: var(--line);
}
.nav-inner { height: var(--nav-h); display: flex; align-items: center; gap: 24px; }
.brand { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brand-mark { width: 38px; height: 38px; border-radius: 10px; box-shadow: 0 0 22px -4px rgba(34, 211, 238, .7); }
.brand-text b { display: block; font-size: 18px; letter-spacing: .14em; line-height: 1.2; }
.brand-text small { display: block; font-size: 9px; letter-spacing: .24em; color: var(--muted); font-family: var(--num); }
.nav-links { display: flex; gap: 2px; margin-left: auto; }
.nav-links a {
  position: relative;
  padding: 8px 14px; border-radius: 8px;
  color: #b8c6e3; font-size: 14.5px;
  transition: color .25s, background .25s;
}
.nav-links a:hover { color: #fff; background: rgba(255, 255, 255, .04); }
.nav-links a.active { color: #fff; }
.nav-links a.active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 1px;
  height: 2px; border-radius: 2px; background: var(--grad);
  box-shadow: 0 0 10px rgba(34, 211, 238, .8);
}
.nav-links .nav-links-cta { display: none; }
.nav-toggle {
  display: none;
  width: 42px; height: 42px; margin-left: auto;
  border: 1px solid var(--line-2); border-radius: 10px;
  background: rgba(255, 255, 255, .03);
  cursor: pointer;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.nav-toggle span { display: block; width: 18px; height: 2px; border-radius: 2px; background: #dbe6fb; transition: transform .3s, opacity .3s; }
.nav.open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav.open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav.open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.scroll-progress {
  position: absolute; left: 0; bottom: -1px;
  height: 2px; width: 0;
  background: var(--grad);
  box-shadow: 0 0 10px var(--cyan);
}

/* ---------- 首屏 ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex; align-items: center;
  padding: calc(var(--nav-h) + 40px) 0 100px;
  overflow: hidden;
}
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-aurora {
  position: absolute; inset: -20% -10% auto; height: 90%;
  background:
    radial-gradient(40% 50% at 70% 40%, rgba(59, 130, 246, .22), transparent 70%),
    radial-gradient(30% 40% at 30% 30%, rgba(34, 211, 238, .14), transparent 70%),
    radial-gradient(30% 40% at 85% 70%, rgba(129, 140, 248, .14), transparent 70%);
  filter: blur(20px);
  animation: aurora 16s ease-in-out infinite alternate;
  pointer-events: none;
}
.hero-floor {
  position: absolute; left: -25%; right: -25%; bottom: -2px; height: 46%;
  background-image:
    linear-gradient(rgba(34, 211, 238, .16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 211, 238, .16) 1px, transparent 1px);
  background-size: 64px 64px;
  transform: perspective(520px) rotateX(62deg);
  transform-origin: bottom center;
  -webkit-mask-image: linear-gradient(to top, #000 10%, transparent 85%);
  mask-image: linear-gradient(to top, #000 10%, transparent 85%);
  animation: floor 3.5s linear infinite;
  pointer-events: none;
}
.hero-inner {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1.08fr 1fr; gap: 48px; align-items: center;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 7px 16px; margin-bottom: 24px;
  border: 1px solid var(--line-2); border-radius: 999px;
  background: rgba(34, 211, 238, .06);
  font-size: 13px; color: #bfe9ff;
}
.pulse-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); animation: pulse 2s infinite; }
.hero-title { font-size: clamp(30px, 3.4vw, 50px); font-weight: 800; letter-spacing: .02em; line-height: 1.18; }
.hero-title span { display: block; }
.hero-title .gradient-text { padding-bottom: 4px; }
.hero-typing { margin: 20px 0 12px; font-size: clamp(17px, 1.6vw, 21px); color: var(--muted); }
.typed { color: #fff; font-weight: 600; }
.caret { display: inline-block; width: 2px; height: 1.1em; margin-left: 3px; vertical-align: -3px; background: var(--cyan); animation: blink 1s steps(1) infinite; }
.hero-desc { max-width: 560px; margin: 0; color: var(--muted); font-size: 15.5px; line-height: 1.9; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px 22px; margin: 30px 0 0; padding: 0; list-style: none; color: var(--muted); font-size: 13.5px; }
.hero-tags li { display: flex; align-items: center; gap: 6px; }
.hero-tags .ico { color: var(--green); }

html.js .hero-in { opacity: 0; transform: translateY(26px); filter: blur(6px); }
body.ready .hero-in { animation: heroIn 1s cubic-bezier(.2, .7, .2, 1) var(--d, 0s) forwards; }

.scroll-hint {
  position: absolute; left: 50%; bottom: 22px; z-index: 2;
  transform: translateX(-50%);
  display: grid; justify-items: center; gap: 8px;
  font-size: 12px; letter-spacing: .2em; color: var(--dim);
}
.scroll-hint .mouse { width: 22px; height: 34px; border: 2px solid var(--line-2); border-radius: 12px; position: relative; }
.scroll-hint .mouse i { position: absolute; left: 50%; top: 7px; width: 3px; height: 7px; margin-left: -1.5px; border-radius: 3px; background: var(--cyan); animation: wheel 1.6s ease-in-out infinite; }

/* ---------- 首屏动画场景 ---------- */
.hero-visual { position: relative; padding: 70px 0 64px; }
.scene {
  width: 100%; height: auto; overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
}
.radar .ring { fill: none; stroke: rgba(59, 130, 246, .13); }
.radar .ring-b { stroke-dasharray: 4 10; transform-origin: 320px 250px; animation: spin 40s linear infinite; }
.radar .ring-c { stroke: rgba(34, 211, 238, .08); stroke-dasharray: 1 7; transform-origin: 320px 250px; animation: spin 60s linear infinite reverse; }
.label { fill: var(--dim); font-size: 11px; letter-spacing: .08em; }

.cloud-shape { fill: rgba(34, 211, 238, .07); stroke: rgba(34, 211, 238, .75); stroke-width: 1.5; transition: fill .4s; }
.cloud-text { fill: #cfefff; font-size: 12px; font-weight: 600; letter-spacing: .08em; }
.cloud-ping { fill: none; stroke: var(--cyan); stroke-width: 2; opacity: 0; transform-box: fill-box; transform-origin: center; }
.scene.synced .cloud-shape { fill: rgba(34, 211, 238, .22); }
.scene.synced .cloud-ping { animation: ping 1s ease-out; }
.data-path { fill: none; stroke: rgba(125, 211, 252, .28); stroke-width: 1.5; stroke-dasharray: 2 6; }
.packet { fill: var(--cyan); opacity: 0; }

.cable { fill: none; stroke: rgba(34, 211, 238, .5); stroke-width: 2; stroke-dasharray: 3 7; animation: dash 1.2s linear infinite; }
.ground { stroke: rgba(148, 163, 184, .38); stroke-width: 2; }
.pit { fill: #070e1f; stroke: rgba(125, 170, 255, .2); }
.platform-glow { fill: var(--cyan); opacity: .18; transition: opacity .4s; }
.scene.weighing .platform-glow { opacity: 1; filter: drop-shadow(0 0 6px #22d3ee); animation: glow 1.1s ease-in-out infinite; }
.loadcell { fill: var(--cyan); opacity: .45; }
.scene.weighing .loadcell { opacity: 1; filter: drop-shadow(0 0 4px #22d3ee); }

.term-body { fill: #0d1a33; stroke: rgba(125, 211, 252, .45); }
.term-screen { fill: #06243a; stroke: rgba(34, 211, 238, .35); }
.term-text { fill: var(--cyan); font-size: 11px; font-weight: 700; font-family: var(--num); letter-spacing: .1em; }
.led { fill: var(--green); animation: led 1.4s steps(2) infinite; }
.led-2 { fill: var(--cyan); animation-delay: .3s; }
.led-3 { fill: var(--amber); animation-delay: .7s; }
.term-lines { stroke: rgba(125, 170, 255, .3); stroke-width: 2; stroke-linecap: round; }
.waves path { fill: none; stroke: var(--cyan); stroke-width: 2; stroke-linecap: round; animation: wave 1.6s ease-in-out infinite; }
.waves path:nth-child(2) { animation-delay: .3s; }

.pole { fill: #334155; }
.cam-body { fill: #e2e8f0; }
.cam-hood { fill: #cbd5e1; }
.cam-lens { fill: #0f172a; stroke: var(--cyan); stroke-width: 1.5; }
.cam-led { fill: var(--red); animation: led 1s steps(2) infinite; }
.beam { opacity: 0; transition: opacity .25s; }
.scene.scan .beam { opacity: 1; animation: beam .5s ease-in-out infinite alternate; }

.gate-post { fill: #e2e8f0; stroke: #94a3b8; }
.gate-arm { transform-box: fill-box; transform-origin: 0 50%; transition: transform .9s cubic-bezier(.5, -.2, .3, 1.3); }
.scene.open .gate-arm { transform: rotate(-80deg); }
.gate-light { fill: var(--red); filter: drop-shadow(0 0 5px #f87171); transition: fill .3s; }
.scene.open .gate-light { fill: var(--green); filter: drop-shadow(0 0 6px #34d399); }

.truck { transform: translate(-260px, 326px); }
.truck.drive { transition: transform 2.6s cubic-bezier(.2, .75, .3, 1); }
.truck.leave { transition: transform 2.2s cubic-bezier(.55, 0, .85, .45); }
.t-load { fill: #8a6a48; }
.truck-text { fill: rgba(255, 255, 255, .55); font-size: 12px; letter-spacing: .3em; font-weight: 600; }
.headlight { fill: #fde68a; filter: drop-shadow(0 0 5px #fde68a); }
.plate-lock { fill: none; stroke: var(--cyan); stroke-width: 2; opacity: 0; }
.scene.locked .plate-lock { opacity: 1; animation: blinkSoft .5s ease-in-out infinite alternate; }
.tire { fill: #0b1020; stroke: #475569; stroke-width: 2; }
.rim { fill: #64748b; }
.spoke { stroke: #1e293b; stroke-width: 2; }
.wheel { transform-box: fill-box; transform-origin: center; }
.scene.moving .wheel { animation: spin .45s linear infinite; }

.hud {
  position: absolute; z-index: 3;
  width: 212px; padding: 12px 14px;
  border-radius: 14px;
  background: rgba(9, 18, 38, .74);
  border: 1px solid rgba(125, 170, 255, .26);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 20px 50px -20px rgba(0, 0, 0, .8), inset 0 1px 0 rgba(255, 255, 255, .05);
  font-size: 12px;
  animation: float 7s ease-in-out infinite;
}
.hud-weight { top: 0; left: 0; }
.hud-plate { top: 16px; right: 0; animation-delay: -2.4s; }
.hud-upload { bottom: 0; right: 0; animation-delay: -4.6s; }
.hud-head { display: flex; align-items: center; gap: 6px; margin-bottom: 8px; color: #bcd0f2; font-weight: 600; }
.hud-head .ico { color: var(--cyan); }
.hud-state {
  margin-left: auto; padding: 2px 8px; border-radius: 999px;
  background: rgba(148, 163, 184, .14); color: var(--muted);
  font-size: 10.5px; font-weight: 500; white-space: nowrap;
}
.hud-state.busy { background: rgba(251, 191, 36, .15); color: var(--amber); }
.hud-state.ok { background: rgba(52, 211, 153, .15); color: var(--green); }
.weight-num {
  font-family: var(--num); font-size: 34px; font-weight: 700; line-height: 1.1;
  color: #fff; letter-spacing: .02em; font-variant-numeric: tabular-nums;
  text-shadow: 0 0 20px rgba(34, 211, 238, .45);
}
.weight-num small { margin-left: 4px; font-size: 13px; color: var(--muted); text-shadow: none; }
.stable-bar { height: 5px; margin: 8px 0 6px; border-radius: 5px; background: rgba(148, 163, 184, .14); overflow: hidden; }
.stable-bar i { display: block; width: 0; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--amber), var(--green)); }
.hud-meta { display: flex; justify-content: space-between; gap: 8px; color: var(--dim); font-size: 11px; }
.plate-box {
  position: relative; overflow: hidden;
  display: flex; justify-content: center;
  padding: 8px; margin-bottom: 8px;
  border-radius: 10px;
  background: rgba(2, 6, 16, .6);
  border: 1px dashed rgba(125, 170, 255, .28);
}
.plate {
  display: inline-block; min-width: 136px; padding: 4px 10px;
  border-radius: 5px; border: 2px solid #111827;
  background: #facc15; color: #111827;
  box-shadow: inset 0 0 0 1px #facc15;
  font-size: 18px; font-weight: 800; letter-spacing: .06em; text-align: center;
  font-variant-numeric: tabular-nums;
}
.plate.idle { background: #1e293b; color: #64748b; border-color: #334155; box-shadow: none; }
.plate-box.scanning::after {
  content: ""; position: absolute; top: 0; bottom: 0; left: -40%; width: 40%;
  background: linear-gradient(90deg, transparent, rgba(34, 211, 238, .45), transparent);
  animation: sweep .7s linear infinite;
}
.upload-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.upload-list li { display: flex; align-items: center; justify-content: space-between; gap: 8px; color: #b6c5e3; }
.upload-list em {
  font-style: normal; font-size: 10.5px; white-space: nowrap;
  padding: 2px 8px; border-radius: 999px;
  background: rgba(148, 163, 184, .12); color: var(--dim);
  transition: background .3s, color .3s;
}
.upload-list li.sending em { color: var(--amber); background: rgba(251, 191, 36, .14); }
.upload-list li.done em { color: var(--green); background: rgba(52, 211, 153, .14); }
.scene-steps { position: absolute; left: 0; bottom: 14px; z-index: 3; display: flex; gap: 6px; }
.scene-steps span {
  padding: 5px 11px; border-radius: 999px;
  border: 1px solid var(--line); background: rgba(9, 18, 38, .6);
  color: var(--dim); font-size: 11.5px;
  transition: all .4s;
}
.scene-steps span.on { color: #fff; border-color: rgba(34, 211, 238, .6); background: rgba(34, 211, 238, .18); box-shadow: 0 0 18px -2px rgba(34, 211, 238, .6); }
.scene-steps span.done { color: #9fe8c8; border-color: rgba(52, 211, 153, .35); }

/* ---------- 数字 & 跑马灯 ---------- */
.stats {
  position: relative;
  padding: 60px 0 0;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(8, 16, 38, .9), rgba(5, 10, 22, 0));
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat { padding: 8px 22px; border-left: 1px solid var(--line); }
.stat:first-child { border-left: 0; }
.stat-num {
  font-family: var(--num); font-weight: 700; line-height: 1;
  font-size: clamp(42px, 4.4vw, 60px);
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat-num em { margin-left: 4px; font-family: var(--font); font-size: .36em; font-style: normal; color: var(--cyan); -webkit-text-fill-color: var(--cyan); }
.stat-label { margin-top: 12px; font-size: 16px; font-weight: 600; }
.stat-label small { display: block; margin-top: 4px; color: var(--dim); font-size: 12.5px; font-weight: 400; }
.marquee {
  margin-top: 56px; padding: 18px 0; overflow: hidden;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.marquee-track { display: flex; width: max-content; animation: marquee 45s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span { display: flex; align-items: center; white-space: nowrap; color: #9fb2d6; font-size: 15px; }
.marquee-track span::after { content: "◆"; margin: 0 30px; font-size: 8px; color: var(--cyan); opacity: .6; }

/* ---------- 通用区块 ---------- */
.section { position: relative; padding: 120px 0; }
.section-alt { background: linear-gradient(180deg, transparent, rgba(12, 24, 52, .5) 18%, rgba(12, 24, 52, .5) 82%, transparent); }
.section-alt::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(125, 170, 255, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(125, 170, 255, .05) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(ellipse at center, #000 20%, transparent 70%);
  mask-image: radial-gradient(ellipse at center, #000 20%, transparent 70%);
}
.section-head { position: relative; max-width: 760px; margin: 0 auto 60px; text-align: center; }
.kicker {
  display: inline-block; margin-bottom: 18px; padding: 6px 14px;
  border: 1px solid rgba(34, 211, 238, .3); border-radius: 999px;
  background: rgba(34, 211, 238, .06);
  font-family: var(--num); font-size: 12px; letter-spacing: .3em; color: var(--cyan);
}
.section-head h2, .about-copy h2, .contact-copy h2 { font-size: clamp(28px, 3.4vw, 42px); font-weight: 800; margin-bottom: 16px; }
.section-head p { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.8; }

html.js [data-reveal] {
  opacity: 0; transform: translateY(34px);
  transition: opacity .9s ease, transform .9s cubic-bezier(.2, .7, .2, 1);
  transition-delay: var(--delay, 0s);
}
html.js [data-reveal="left"] { transform: translateX(-44px); }
html.js [data-reveal="right"] { transform: translateX(44px); }
html.js [data-reveal].in { opacity: 1; transform: none; }

/* 光斑跟随 + 发光描边 */
.spot, .tilt { position: relative; }
.spot::before, .tilt::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), rgba(34, 211, 238, .12), transparent 40%);
  opacity: 0; transition: opacity .35s;
}
.spot::after, .tilt::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  padding: 1px;
  background: radial-gradient(260px circle at var(--mx, 50%) var(--my, 50%), rgba(34, 211, 238, .9), transparent 45%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0);
  opacity: 0; transition: opacity .35s;
}
.spot:hover::before, .spot:hover::after, .tilt:hover::before, .tilt:hover::after { opacity: 1; }

.check-list { list-style: none; margin: 0 0 24px; padding: 0; display: grid; gap: 11px; }
.check-list li { position: relative; padding-left: 26px; color: #c3d0ea; font-size: 14.5px; }
.check-list li::before {
  content: ""; position: absolute; left: 0; top: 3px;
  width: 17px; height: 17px; border-radius: 50%;
  background: rgba(34, 211, 238, .15) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2322d3ee' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E") center / 10px no-repeat;
}

/* ---------- 业务领域 ---------- */
.biz-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.biz-card {
  padding: 34px 30px 30px;
  border-radius: 22px;
  background: linear-gradient(160deg, rgba(20, 36, 70, .72), rgba(10, 18, 38, .72));
  border: 1px solid var(--line);
  overflow: hidden;
  will-change: transform;
}
.biz-card.ready { transition: transform .25s ease-out, box-shadow .35s, border-color .35s; }
.biz-card:hover { box-shadow: 0 30px 70px -30px rgba(34, 211, 238, .45); }
.biz-card.featured { border-color: rgba(34, 211, 238, .35); box-shadow: 0 30px 80px -34px rgba(34, 211, 238, .45); }
.biz-card.featured .biz-icon { background: var(--grad); color: #fff; border-color: transparent; }
.biz-no {
  position: absolute; top: 16px; right: 24px;
  font-family: var(--num); font-size: 66px; font-weight: 800; line-height: 1;
  color: transparent; -webkit-text-stroke: 1px rgba(125, 170, 255, .22);
}
.biz-icon {
  width: 60px; height: 60px; margin-bottom: 22px;
  display: grid; place-items: center;
  border-radius: 16px;
  background: linear-gradient(145deg, rgba(34, 211, 238, .22), rgba(59, 130, 246, .12));
  border: 1px solid rgba(34, 211, 238, .35);
  color: var(--cyan);
  box-shadow: 0 0 30px -6px rgba(34, 211, 238, .45);
}
.biz-icon .ico { width: 28px; height: 28px; }
.biz-card h3 { font-size: 21px; margin-bottom: 4px; }
.biz-sub { margin: 0 0 22px; color: var(--dim); font-size: 12.5px; letter-spacing: .06em; }
.biz-link { position: relative; z-index: 1; display: inline-flex; align-items: center; gap: 6px; color: var(--cyan); font-size: 14px; font-weight: 600; }
.biz-link .ico { transition: transform .25s; }
.biz-link:hover .ico { transform: translateX(4px); }

/* ---------- 核心产品 ---------- */
.tabs {
  position: relative;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px;
  max-width: 920px; margin: 0 auto 56px; padding: 6px;
  border-radius: 18px;
  background: rgba(10, 20, 42, .75);
  border: 1px solid var(--line);
}
.tab {
  position: relative; z-index: 1;
  display: flex; align-items: center; justify-content: center; gap: 12px;
  padding: 13px 12px; border: 0; border-radius: 13px;
  background: none; color: var(--muted);
  font-size: 15px; font-weight: 600; text-align: left;
  cursor: pointer; transition: color .3s;
}
.tab .ico { width: 26px; height: 26px; }
.tab small { display: block; color: var(--dim); font-size: 11.5px; font-weight: 400; transition: color .3s; }
.tab:hover { color: #dbe6fb; }
.tab.active { color: #fff; }
.tab.active small { color: #bfe9ff; }
.tab:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }
.tab-ink {
  position: absolute; z-index: 0; top: 6px; bottom: 6px; left: 6px;
  border-radius: 13px;
  background: linear-gradient(120deg, rgba(34, 211, 238, .24), rgba(59, 130, 246, .3));
  border: 1px solid rgba(34, 211, 238, .45);
  box-shadow: 0 0 30px -6px rgba(34, 211, 238, .5);
  transition: transform .5s cubic-bezier(.6, .05, .2, 1), width .5s;
}
.panel { display: grid; grid-template-columns: 1fr 1.08fr; gap: 56px; align-items: center; }
.panel[hidden] { display: none; }
.panel.active { animation: panelIn .7s cubic-bezier(.2, .7, .2, 1); }
.badge { font-family: var(--num); font-size: 11px; letter-spacing: .28em; color: var(--cyan); }
.panel-copy h3 { margin: 10px 0 14px; font-size: 30px; }
.panel-lead { margin: 0 0 26px; color: var(--muted); font-size: 15px; line-height: 1.85; }
.feat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 24px; }
.feat {
  display: flex; gap: 12px; padding: 14px;
  border-radius: 14px; border: 1px solid var(--line);
  background: rgba(14, 26, 52, .55);
  transition: border-color .3s, transform .3s, background .3s;
}
.feat:hover { border-color: rgba(34, 211, 238, .4); background: rgba(20, 40, 76, .6); transform: translateY(-2px); }
.feat > .ico { width: 36px; height: 36px; padding: 8px; border-radius: 10px; background: rgba(34, 211, 238, .12); color: var(--cyan); }
.feat b { display: block; margin-bottom: 3px; font-size: 14.5px; }
.feat span { display: block; color: var(--muted); font-size: 12.5px; line-height: 1.55; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips span { padding: 5px 12px; border-radius: 999px; border: 1px solid var(--line-2); color: #a9bbdd; font-size: 12px; }
.panel-visual { position: relative; }
.panel-visual::before {
  content: ""; position: absolute; inset: 8% 4%; z-index: -1;
  background: radial-gradient(closest-side, rgba(34, 211, 238, .22), transparent);
  filter: blur(30px);
}
.mock-note { margin: 12px 4px 0; color: var(--dim); font-size: 11.5px; }

.mock {
  position: relative;
  border-radius: 14px; border: 1px solid var(--line-2);
  background: #0a1428;
  box-shadow: 0 40px 90px -30px rgba(0, 0, 0, .75), 0 0 60px -14px rgba(34, 211, 238, .2);
  overflow: hidden;
  font-size: 12px;
}
.mock-bar { display: flex; align-items: center; gap: 6px; padding: 10px 12px; background: #0d1a33; border-bottom: 1px solid var(--line); }
.mock-bar > i { width: 10px; height: 10px; border-radius: 50%; background: #f87171; }
.mock-bar > i:nth-child(2) { background: #fbbf24; }
.mock-bar > i:nth-child(3) { background: #34d399; }
.mock-url { flex: 1; margin-left: 10px; padding: 4px 10px; border-radius: 6px; background: #081226; color: var(--muted); font-family: var(--num); font-size: 11px; }

.term-ui { display: grid; gap: 12px; padding: 14px; }
.status-row { display: flex; flex-wrap: wrap; gap: 6px; }
.sts { padding: 4px 9px; border-radius: 999px; background: rgba(148, 163, 184, .1); color: var(--muted); font-size: 11px; }
.sts.ok::before { content: ""; display: inline-block; width: 6px; height: 6px; margin-right: 5px; border-radius: 50%; background: var(--green); box-shadow: 0 0 8px var(--green); vertical-align: 1px; }
.term-main { display: grid; grid-template-columns: 1.1fr 1fr; gap: 12px; }
.term-weight, .term-snap, .feed { border: 1px solid var(--line); border-radius: 10px; background: #0d1a33; }
.term-weight, .term-snap { padding: 12px; }
.term-ui label { display: block; margin-bottom: 4px; color: var(--dim); font-size: 11px; }
.big-num { font-family: var(--num); font-size: 38px; font-weight: 700; line-height: 1.1; color: #fff; text-shadow: 0 0 18px rgba(34, 211, 238, .5); font-variant-numeric: tabular-nums; }
.big-num small { margin-left: 4px; font-size: 13px; color: var(--muted); text-shadow: none; }
.spark { width: 100%; height: 44px; margin: 6px 0; }
.spark path { fill: none; stroke: var(--cyan); stroke-width: 2; stroke-linejoin: round; }
.spark path.draw { stroke-dasharray: 1; stroke-dashoffset: 1; animation: drawLine 1.4s ease forwards; }
.term-tag { display: flex; align-items: center; gap: 6px; color: var(--green); font-size: 11px; }
.dot-live { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 0 rgba(52, 211, 153, .6); animation: pulseGreen 1.8s infinite; }
.snap-img { position: relative; overflow: hidden; border-radius: 8px; }
.snap-img svg { width: 100%; height: auto; }
.snap-lock { fill: none; stroke: var(--cyan); stroke-width: 1.5; animation: blinkSoft .8s ease-in-out infinite alternate; }
.snap-plate { position: absolute; left: 8px; bottom: 8px; padding: 2px 7px; border-radius: 4px; background: #facc15; color: #111827; font-size: 11px; font-weight: 800; }
.feed { overflow: hidden; }
.feed-head, .feed-list li { display: grid; grid-template-columns: 1.1fr 1.2fr 1fr .8fr; gap: 6px; padding: 7px 12px; }
.feed-head { color: var(--dim); font-size: 11px; border-bottom: 1px solid var(--line); }
.feed-list { list-style: none; margin: 0; padding: 0; height: 124px; overflow: hidden; }
.feed-list li { color: #c3d0ea; border-bottom: 1px solid rgba(125, 170, 255, .06); font-variant-numeric: tabular-nums; }
.feed-list li.new { animation: rowIn .7s ease; }
.feed-list em { font-style: normal; color: var(--green); }

.win-bar { display: flex; align-items: center; gap: 8px; padding: 8px 12px; background: linear-gradient(#13223f, #0e1a33); color: #cbd5e1; }
.win-btns { display: flex; gap: 12px; margin-left: auto; }
.win-btns b { width: 10px; height: 10px; border: 1.5px solid #94a3b8; border-radius: 2px; }
.win-btns b:first-child { height: 0; border-width: 1.5px 0 0; margin-top: 5px; }
.win-menu { display: flex; gap: 4px; padding: 6px 10px; background: #0b1630; border-bottom: 1px solid var(--line); }
.win-menu span { padding: 5px 12px; border-radius: 6px; color: var(--muted); }
.win-menu span.on { background: rgba(34, 211, 238, .14); color: var(--cyan); }
.win-body { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; padding: 12px; }
.chan { overflow: hidden; border: 1px solid var(--line); border-radius: 10px; background: #0d1a33; }
.chan-video { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: radial-gradient(ellipse at 50% 120%, #1e293b, #070d1a 70%); }
.chan-video::before { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 16%; background: #111d33; }
.live { position: absolute; top: 6px; left: 8px; z-index: 2; color: var(--red); font-size: 10px; font-weight: 700; letter-spacing: .05em; }
.chan-name { position: absolute; top: 6px; right: 8px; z-index: 2; color: var(--muted); font-size: 10px; }
.scanline { position: absolute; left: 0; right: 0; z-index: 1; height: 30%; background: linear-gradient(to bottom, transparent, rgba(34, 211, 238, .16), transparent); animation: scan 3s linear infinite; }
.chan-truck {
  position: absolute; left: 27%; bottom: 10%; width: 46%; height: 58%;
  border-radius: 10px 10px 4px 4px;
  background:
    radial-gradient(circle at 14% 78%, #fde68a 0 5%, transparent 6%),
    radial-gradient(circle at 86% 78%, #fde68a 0 5%, transparent 6%),
    linear-gradient(#e2e8f0, #94a3b8);
  transform-origin: 50% 100%;
}
.chan-truck::before { content: ""; position: absolute; left: 8%; right: 8%; top: 10%; height: 40%; border-radius: 4px; background: linear-gradient(135deg, #a5f3fc, #0e7490); opacity: .85; }
.chan-truck::after { content: ""; position: absolute; left: 35%; width: 30%; bottom: 12%; height: 12%; border-radius: 2px; background: #facc15; }
.chan-box { position: absolute; left: 41%; width: 18%; bottom: 14.5%; height: 12%; z-index: 2; border: 2px solid var(--cyan); border-radius: 3px; box-shadow: 0 0 12px rgba(34, 211, 238, .8); animation: blinkSoft .7s ease-in-out infinite alternate; }
.chan-video.arrive .chan-truck { animation: arrive 1s cubic-bezier(.2, .7, .2, 1); }
.chan-video.arrive .chan-box { animation: none; opacity: 0; }
.chan-info { display: grid; gap: 4px; padding: 10px 12px; }
.chan-plate { justify-self: start; margin-bottom: 4px; padding: 2px 8px; border-radius: 4px; background: #facc15; color: #111827; font-size: 12px; font-weight: 800; }
.chan-row { display: flex; justify-content: space-between; color: var(--muted); }
.chan-row b { color: #fff; font-family: var(--num); font-size: 13px; font-variant-numeric: tabular-nums; }
.chan-status { margin-top: 6px; padding: 5px; border-radius: 6px; text-align: center; background: rgba(251, 191, 36, .12); color: var(--amber); font-size: 11px; transition: background .3s, color .3s; }
.chan-status.ok { background: rgba(52, 211, 153, .12); color: var(--green); }
.win-foot { display: flex; flex-wrap: wrap; gap: 6px 16px; padding: 8px 12px; border-top: 1px solid var(--line); color: var(--dim); font-size: 11px; }
.win-foot span { display: inline-flex; align-items: center; gap: 6px; }

.mock-dash { display: grid; grid-template-columns: 120px 1fr; overflow: visible; }
.dash-side { display: flex; flex-direction: column; gap: 2px; padding: 12px 8px; border-right: 1px solid var(--line); border-radius: 14px 0 0 14px; background: #0b1630; }
.dash-logo { display: flex; align-items: center; gap: 6px; padding: 4px 6px 12px; font-size: 12px; font-weight: 700; }
.dash-side span { display: flex; align-items: center; gap: 7px; padding: 7px 8px; border-radius: 6px; color: var(--muted); font-size: 11.5px; white-space: nowrap; }
.dash-side span .ico { width: 14px; height: 14px; }
.dash-side span.on { background: linear-gradient(90deg, rgba(34, 211, 238, .2), transparent); color: #fff; box-shadow: inset 2px 0 0 var(--cyan); }
.dash-main { display: grid; gap: 10px; padding: 12px; min-width: 0; }
.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.kpi { padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: #0d1a33; }
.kpi label { display: block; color: var(--dim); font-size: 10.5px; }
.kpi b { font-family: var(--num); font-size: 20px; color: #fff; font-variant-numeric: tabular-nums; }
.dash-chart { padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: #0d1a33; }
.dash-chart-head { display: flex; justify-content: space-between; color: #c3d0ea; font-size: 11.5px; }
.dash-chart-head em { font-style: normal; color: var(--dim); font-size: 10.5px; }
.dash-chart svg { width: 100%; height: 108px; margin-top: 4px; }
.dash-chart .grid-l { fill: none; stroke: rgba(125, 170, 255, .1); }
.dash-chart .line { fill: none; stroke: var(--cyan); stroke-width: 2.5; stroke-linecap: round; stroke-dasharray: 1; stroke-dashoffset: 1; filter: drop-shadow(0 0 4px rgba(34, 211, 238, .6)); }
.dash-chart .area { opacity: 0; transition: opacity 1s .6s; }
.dash-chart.drawn .line { animation: drawLine 1.8s ease forwards; }
.dash-chart.drawn .area { opacity: 1; }
.dash-list { display: grid; gap: 6px; padding-right: 110px; }
.dash-list div { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 7px 10px; border-radius: 8px; background: #0d1a33; color: #c3d0ea; }
.tag { padding: 2px 8px; border-radius: 999px; font-style: normal; font-size: 10.5px; white-space: nowrap; }
.tag.ok { background: rgba(52, 211, 153, .14); color: var(--green); }
.tag.warn { background: rgba(251, 191, 36, .14); color: var(--amber); }
.tag.info { background: rgba(59, 130, 246, .18); color: #93c5fd; }
.phone {
  position: absolute; right: -22px; bottom: -34px;
  display: grid; gap: 7px;
  width: 152px; padding: 20px 10px 12px;
  border-radius: 24px; border: 5px solid #1e293b;
  background: #0a1224;
  box-shadow: 0 30px 60px -20px rgba(0, 0, 0, .9), 0 0 40px -10px rgba(34, 211, 238, .35);
  animation: float 6s ease-in-out infinite;
}
.phone-notch { position: absolute; top: 5px; left: 50%; width: 44px; height: 6px; margin-left: -22px; border-radius: 6px; background: #1e293b; }
.phone-title { font-size: 12px; font-weight: 700; text-align: center; }
.phone-card { display: grid; gap: 3px; padding: 7px 8px; border-radius: 8px; background: #101d38; }
.phone-card b { font-size: 11px; }
.phone-card span { color: var(--muted); font-size: 10px; }
.phone-card .bar { display: block; height: 4px; border-radius: 4px; background: rgba(148, 163, 184, .15); overflow: hidden; }
.phone-card .bar em { display: block; height: 100%; background: var(--grad); }
.phone-btn { padding: 6px; border-radius: 8px; background: var(--grad); color: #fff; font-size: 11px; font-weight: 600; text-align: center; }

/* ---------- 称重流程 ---------- */
.flow { position: relative; display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; margin: 0 0 80px; padding: 0; list-style: none; }
.flow::before { content: ""; position: absolute; top: 34px; left: 8%; right: 8%; height: 2px; background: linear-gradient(90deg, transparent, var(--line-2) 10%, var(--line-2) 90%, transparent); }
.flow::after {
  content: ""; position: absolute; top: 33px; left: 6%;
  width: 120px; height: 4px; border-radius: 4px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  box-shadow: 0 0 12px var(--cyan);
  opacity: 0;
}
.flow.run::after { opacity: 1; animation: travel 3.6s linear infinite; }
.flow-step { position: relative; padding: 0 4px; text-align: center; }
html.js .flow-step { opacity: .3; transform: translateY(18px); transition: opacity .6s, transform .6s; }
html.js .flow-step.on { opacity: 1; transform: none; }
.flow-icon {
  position: relative; z-index: 1;
  width: 68px; height: 68px; margin: 0 auto 16px;
  display: grid; place-items: center;
  border-radius: 20px; border: 1px solid var(--line-2);
  background: #0b1630; color: var(--cyan);
  transition: all .5s;
}
.flow-icon .ico { width: 28px; height: 28px; }
.flow-step.on .flow-icon { background: linear-gradient(145deg, rgba(34, 211, 238, .24), rgba(59, 130, 246, .14)); border-color: rgba(34, 211, 238, .55); box-shadow: 0 0 30px -6px rgba(34, 211, 238, .5); }
.flow-step.active .flow-icon { transform: translateY(-6px) scale(1.07); background: var(--grad); color: #fff; box-shadow: 0 14px 34px -8px rgba(34, 211, 238, .8); }
.flow-no { font-family: var(--num); font-size: 11px; letter-spacing: .15em; color: var(--cyan); }
.flow-step h4 { margin: 6px 0; font-size: 17px; }
.flow-step p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.7; }

.arch {
  position: relative;
  display: grid; grid-template-columns: 1fr 210px; gap: 18px;
  padding: 28px;
  border-radius: 24px; border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(14, 26, 52, .6), rgba(8, 16, 38, .6));
}
.arch-title { grid-column: 1 / -1; display: flex; align-items: center; gap: 8px; font-size: 18px; font-weight: 700; }
.arch-title .ico { color: var(--cyan); }
.arch-layer {
  position: relative; overflow: hidden;
  display: grid; grid-template-columns: 110px 1fr; align-items: center; gap: 14px;
  padding: 14px 16px 14px 20px;
  border-radius: 14px; border: 1px solid var(--line);
  background: rgba(10, 20, 42, .65);
}
.arch-layer::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--c, var(--cyan)); box-shadow: 0 0 12px var(--c, var(--cyan)); }
.arch-layer.l4 { --c: #a78bfa; }
.arch-layer.l3 { --c: #60a5fa; }
.arch-layer.l2 { --c: #22d3ee; }
.arch-layer.l1 { --c: #34d399; }
.arch-name b { display: block; font-size: 15px; }
.arch-name span { font-family: var(--num); font-size: 10.5px; letter-spacing: .14em; color: var(--dim); text-transform: uppercase; }
.arch-items { display: flex; flex-wrap: wrap; gap: 8px; }
.arch-items span { padding: 6px 12px; border-radius: 8px; border: 1px solid rgba(59, 130, 246, .22); background: rgba(59, 130, 246, .1); color: #cfe0ff; font-size: 13px; transition: transform .25s, border-color .25s; }
.arch-items span:hover { transform: translateY(-2px); border-color: rgba(34, 211, 238, .5); }
.arch-items span.hl { background: linear-gradient(90deg, rgba(34, 211, 238, .25), rgba(59, 130, 246, .25)); border-color: rgba(34, 211, 238, .5); color: #fff; font-weight: 600; }
.arch-link { display: flex; justify-content: center; gap: 120px; height: 28px; }
.arch-link i { position: relative; width: 2px; height: 100%; overflow: hidden; background: var(--line-2); }
.arch-link i::after { content: ""; position: absolute; left: -2px; top: 100%; width: 6px; height: 9px; border-radius: 3px; background: var(--cyan); box-shadow: 0 0 8px var(--cyan); animation: up 1.4s linear infinite; }
.arch-link i:nth-child(2)::after { animation-delay: .45s; }
.arch-link i:nth-child(3)::after { animation-delay: .9s; }
.arch-side {
  display: flex; flex-direction: column; justify-content: center; gap: 10px;
  padding: 18px; border-radius: 14px; border: 1px dashed var(--line-2);
  background: rgba(34, 211, 238, .03);
}
.arch-side .arch-name { margin-bottom: 4px; }
.arch-side > span { display: flex; align-items: center; gap: 8px; padding: 11px 12px; border-radius: 10px; background: rgba(34, 211, 238, .08); font-size: 13.5px; }
.arch-side > span .ico { color: var(--cyan); }

/* ---------- 解决方案 ---------- */
.sol-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.sol-card {
  display: flex; flex-direction: column;
  padding: 28px 24px;
  border-radius: 20px; border: 1px solid var(--line);
  background: linear-gradient(170deg, rgba(20, 36, 70, .7), rgba(10, 18, 38, .7));
  transition: transform .35s, box-shadow .35s;
}
.sol-card:hover { transform: translateY(-6px); box-shadow: 0 30px 60px -30px rgba(34, 211, 238, .45); }
.sol-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.sol-icon { width: 52px; height: 52px; display: grid; place-items: center; border-radius: 14px; background: var(--grad); color: #fff; box-shadow: 0 10px 26px -8px rgba(34, 211, 238, .7); }
.sol-icon .ico { width: 26px; height: 26px; }
.sol-tag { padding: 4px 10px; border-radius: 999px; border: 1px solid rgba(34, 211, 238, .3); color: var(--cyan); font-size: 11.5px; }
.sol-card h3 { margin-bottom: 10px; font-size: 18px; }
.sol-card p { margin: 0 0 18px; color: var(--muted); font-size: 13.5px; line-height: 1.8; }
.dot-list { display: grid; gap: 7px; margin: auto 0 0; padding: 16px 0 0; list-style: none; border-top: 1px dashed var(--line-2); }
.dot-list li { position: relative; padding-left: 16px; color: #c3d0ea; font-size: 13px; }
.dot-list li::before { content: ""; position: absolute; left: 0; top: 8px; width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 8px var(--cyan); }

/* ---------- 服务保障 ---------- */
.timeline { position: relative; display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.tl-line { position: absolute; top: 38px; left: 8%; right: 8%; height: 2px; background: var(--line); }
.tl-line i { display: block; width: calc(var(--p, 0) * 100%); height: 100%; background: var(--grad); box-shadow: 0 0 12px var(--cyan); }
.tl-item { position: relative; text-align: center; }
.tl-dot {
  position: relative; z-index: 1;
  width: 58px; height: 58px; margin: 9px auto 18px;
  display: grid; place-items: center;
  border-radius: 50%; border: 1px solid var(--line-2);
  background: #0b1630; color: var(--muted);
  transition: all .5s;
}
.tl-dot .ico { width: 24px; height: 24px; }
.tl-item.lit .tl-dot { color: #fff; border-color: rgba(34, 211, 238, .7); background: linear-gradient(145deg, rgba(34, 211, 238, .4), rgba(59, 130, 246, .35)); box-shadow: 0 0 0 7px rgba(34, 211, 238, .08), 0 0 26px rgba(34, 211, 238, .45); }
.tl-item h4 { margin-bottom: 6px; font-size: 17px; }
.tl-item p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.7; }

/* ---------- 关于我们 ---------- */
.about { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.about-copy p { margin: 0 0 16px; color: var(--muted); font-size: 15.5px; line-height: 1.95; }
.about-mission { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 28px; }
.about-mission div { padding: 16px 18px; border-radius: 14px; border: 1px solid var(--line); background: rgba(14, 26, 52, .6); }
.about-mission b { display: block; margin-bottom: 4px; color: var(--cyan); font-size: 13px; letter-spacing: .2em; }
.about-mission span { font-size: 14.5px; font-weight: 600; }
.adv-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.adv {
  padding: 26px 22px;
  border-radius: 20px; border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(20, 36, 70, .7), rgba(10, 18, 38, .7));
}
.adv:nth-child(even) { transform: translateY(30px); }
html.js .adv:nth-child(even)[data-reveal].in { transform: translateY(30px); }
.adv > .ico { width: 46px; height: 46px; padding: 10px; margin-bottom: 16px; border-radius: 12px; background: rgba(34, 211, 238, .12); color: var(--cyan); }
.adv h4 { margin-bottom: 8px; font-size: 16.5px; }
.adv p { margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.75; }

/* ---------- 联系我们 ---------- */
.contact { overflow: hidden; }
.contact-bg {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(600px 420px at 15% 30%, rgba(34, 211, 238, .14), transparent 70%),
    radial-gradient(600px 420px at 85% 75%, rgba(129, 140, 248, .14), transparent 70%);
}
.contact-inner { position: relative; display: grid; grid-template-columns: 1.1fr .9fr; gap: 60px; align-items: center; }
.contact-copy > p { margin: 0 0 22px; color: var(--muted); font-size: 15.5px; line-height: 1.9; }
.contact-list { margin: 0; padding: 0; list-style: none; }
.contact-list li { display: flex; align-items: center; gap: 16px; padding: 15px 0; border-bottom: 1px solid var(--line); }
.ci { width: 46px; height: 46px; flex-shrink: 0; display: grid; place-items: center; border-radius: 12px; background: rgba(34, 211, 238, .12); color: var(--cyan); }
.ci .ico { width: 22px; height: 22px; }
.contact-list small { display: block; color: var(--dim); font-size: 12px; }
.contact-list a, .contact-list div > span { font-size: 17px; font-weight: 600; }
.contact-list a:hover { color: var(--cyan); }
.contact-card {
  padding: 32px;
  border-radius: 24px; border: 1px solid rgba(34, 211, 238, .25);
  background: linear-gradient(160deg, rgba(20, 38, 76, .8), rgba(10, 18, 38, .8));
  box-shadow: 0 40px 90px -40px rgba(34, 211, 238, .45);
}
.contact-card h3 { margin-bottom: 20px; font-size: 20px; }
.qr { display: flex; align-items: center; gap: 16px; margin: 4px 0 22px; padding: 14px; border-radius: 14px; border: 1px dashed var(--line-2); background: rgba(255, 255, 255, .02); }
.qr-img {
  width: 124px; height: 124px; flex-shrink: 0;
  padding: 6px; border-radius: 12px; background: #fff;
  box-shadow: 0 0 0 1px rgba(34, 211, 238, .35), 0 10px 30px -10px rgba(34, 211, 238, .5);
}
.qr b { display: block; margin-bottom: 4px; font-size: 16px; }
.qr span { display: block; color: var(--muted); font-size: 13px; }
.qr .qr-tip { display: inline-flex; align-items: center; gap: 6px; margin-top: 10px; padding: 4px 10px; border-radius: 999px; background: rgba(52, 211, 153, .12); color: var(--green); font-size: 12px; }

.footer-contact { display: grid; gap: 8px; margin: 18px 0 0; padding: 0; list-style: none; color: var(--muted); font-size: 13.5px; }
.footer-contact li { display: flex; align-items: flex-start; gap: 8px; }
.footer-contact .ico { margin-top: 3px; color: var(--cyan); }
.footer-contact a:hover { color: var(--cyan); }

/* ---------- 页脚 ---------- */
.footer { position: relative; padding: 60px 0 26px; border-top: 1px solid var(--line); background: rgba(3, 7, 16, .7); }
.footer-inner { display: grid; grid-template-columns: 1fr 1.4fr; gap: 40px; }
.footer-brand p { margin: 16px 0 0; color: var(--dim); font-size: 13.5px; }
.footer-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.footer-cols h5 { margin-bottom: 14px; font-size: 14px; }
.footer-cols a { display: block; padding: 4px 0; color: var(--muted); font-size: 13.5px; transition: color .25s; }
.footer-cols a:hover { color: var(--cyan); }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; margin-top: 44px; padding: 22px 70px 0 28px; border-top: 1px solid var(--line); color: var(--dim); font-size: 12.5px; }
.footer-bottom a:hover { color: var(--cyan); }

.to-top {
  position: fixed; right: 24px; bottom: 24px; z-index: 90;
  width: 50px; height: 50px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: rgba(9, 18, 38, .85);
  backdrop-filter: blur(8px);
  color: #fff;
  opacity: 0; visibility: hidden; transform: translateY(16px);
  transition: all .35s;
}
.to-top.show { opacity: 1; visibility: visible; transform: none; }
.to-top > .ico { transform: rotate(-90deg); width: 20px; height: 20px; }
.to-top-ring { position: absolute; inset: 0; width: 100%; height: 100%; transform: rotate(-90deg); }
.to-top-ring circle { fill: none; stroke: var(--line-2); stroke-width: 2.5; }
.to-top-ring circle + circle { stroke: var(--cyan); stroke-linecap: round; }
.to-top:hover { box-shadow: 0 0 24px rgba(34, 211, 238, .5); }

/* ---------- 动画关键帧 ---------- */
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes drawLine { to { stroke-dashoffset: 0; } }
@keyframes load { to { width: 100%; } }
@keyframes shine { to { background-position: 200% center; } }
@keyframes blink { 50% { opacity: 0; } }
@keyframes blinkSoft { from { opacity: .35; } to { opacity: 1; } }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(34, 211, 238, .6); } 70% { box-shadow: 0 0 0 10px rgba(34, 211, 238, 0); } 100% { box-shadow: 0 0 0 0 rgba(34, 211, 238, 0); } }
@keyframes pulseGreen { 0% { box-shadow: 0 0 0 0 rgba(52, 211, 153, .6); } 70% { box-shadow: 0 0 0 8px rgba(52, 211, 153, 0); } 100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0); } }
@keyframes heroIn { to { opacity: 1; transform: none; filter: none; } }
@keyframes aurora { 0% { transform: translate3d(0, 0, 0) scale(1); } 100% { transform: translate3d(-4%, 4%, 0) scale(1.1); } }
@keyframes floor { to { background-position: 0 64px; } }
@keyframes wheel { 0% { transform: translateY(0); opacity: 1; } 80% { transform: translateY(10px); opacity: 0; } 100% { opacity: 0; } }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
@keyframes dash { to { stroke-dashoffset: -20; } }
@keyframes glow { 50% { opacity: .55; } }
@keyframes led { 50% { opacity: .2; } }
@keyframes wave { 0%, 100% { opacity: .2; } 50% { opacity: 1; } }
@keyframes beam { from { opacity: .55; } to { opacity: 1; } }
@keyframes ping { from { opacity: .9; transform: scale(.6); } to { opacity: 0; transform: scale(1.5); } }
@keyframes sweep { to { left: 110%; } }
@keyframes marquee { to { transform: translateX(-50%); } }
@keyframes panelIn { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }
@keyframes rowIn { from { opacity: 0; transform: translateY(-100%); background: rgba(34, 211, 238, .25); } to { opacity: 1; transform: none; background: transparent; } }
@keyframes scan { from { top: -30%; } to { top: 100%; } }
@keyframes arrive { from { transform: translateY(-18%) scale(.55); opacity: .2; } to { transform: none; opacity: 1; } }
@keyframes travel { from { left: 4%; } to { left: calc(96% - 120px); } }
@keyframes up { from { top: 100%; } to { top: -9px; } }

/* ---------- 响应式 ---------- */
@media (max-width: 1180px) {
  .hero-inner { grid-template-columns: 1fr; gap: 20px; text-align: center; }
  .hero-desc { margin-inline: auto; }
  .hero-actions, .hero-tags { justify-content: center; }
  .hero-visual { width: 100%; max-width: 680px; margin: 0 auto; }
  .panel { grid-template-columns: 1fr; gap: 40px; }
  .panel-visual { max-width: 680px; width: 100%; margin: 0 auto; }
  .sol-grid { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(3, 1fr); row-gap: 40px; }
  .flow::before, .flow::after { display: none; }
  .about { grid-template-columns: 1fr; gap: 48px; }
  .contact-inner { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 960px) {
  .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    flex-direction: column; gap: 2px;
    padding: 12px 16px 20px;
    background: rgba(5, 10, 22, .97);
    border-bottom: 1px solid var(--line);
    opacity: 0; visibility: hidden; transform: translateY(-10px);
    transition: opacity .3s, transform .3s, visibility .3s;
  }
  .nav.open .nav-links { opacity: 1; visibility: visible; transform: none; }
  .nav-links a { padding: 13px 12px; font-size: 16px; border-bottom: 1px solid var(--line); border-radius: 0; }
  .nav-links a.active::after { left: 12px; right: auto; width: 24px; bottom: 6px; }
  .nav-links .nav-links-cta { display: block; margin-top: 12px; border: 0; border-radius: 12px; background: var(--grad); color: #fff; text-align: center; font-weight: 600; }
  .biz-grid { grid-template-columns: 1fr; max-width: 620px; margin: 0 auto; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); row-gap: 36px; }
  .stat:nth-child(3) { border-left: 0; }
  .arch { grid-template-columns: 1fr; }
  .arch-side { flex-direction: row; flex-wrap: wrap; }
  .arch-side .arch-name { width: 100%; }
  .arch-side > span { flex: 1 1 150px; }
  .timeline { grid-template-columns: repeat(3, 1fr); row-gap: 36px; }
  .tl-line { display: none; }
  .footer-inner { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  :root { --nav-h: 64px; }
  .container { padding: 0 16px; }
  .section { padding: 84px 0; }
  .section-head { margin-bottom: 40px; }
  .section-head p { font-size: 14.5px; }
  .hero { padding-bottom: 80px; }
  .hero-desc { font-size: 14.5px; }
  .hero-actions { gap: 10px; }
  .hero-actions .btn { flex: 1 1 0; padding: 0 12px; white-space: nowrap; font-size: 14.5px; }
  .eyebrow-en { display: none; }
  .hero-visual { padding: 96px 0 92px; }
  .hud { width: 48%; padding: 9px 10px; font-size: 10.5px; border-radius: 12px; }
  .hud-plate { top: 0; }
  .hud-upload { width: 60%; }
  .weight-num { font-size: 24px; }
  .plate { min-width: 0; width: 100%; font-size: 14px; }
  .hud-meta { font-size: 9.5px; }
  .scene-steps { display: none; }
  .scroll-hint { display: none; }
  .stat { padding: 4px 12px; }
  .stat-label { font-size: 14.5px; }
  .tab { flex-direction: column; gap: 4px; padding: 10px 4px; font-size: 13px; text-align: center; }
  .tab .ico { width: 22px; height: 22px; }
  .tab small { display: none; }
  .panel-copy h3 { font-size: 24px; }
  .feat-grid { grid-template-columns: 1fr; }
  .term-main { grid-template-columns: 1fr; }
  .win-body { grid-template-columns: 1fr; }
  .chan[data-chan="1"] { display: none; }
  .mock-dash { grid-template-columns: 1fr; }
  .dash-side { display: none; }
  .kpis { grid-template-columns: repeat(2, 1fr); }
  .dash-list { padding-right: 0; }
  .phone { display: none; }
  .flow { grid-template-columns: repeat(2, 1fr); gap: 32px 14px; }
  .arch { padding: 18px; }
  .arch-layer { grid-template-columns: 1fr; gap: 10px; }
  .arch-link { gap: 60px; }
  .sol-grid { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: 1fr; gap: 0; padding-left: 8px; }
  .tl-line { display: block; top: 20px; bottom: 60px; left: 36px; right: auto; width: 2px; height: auto; }
  .tl-line i { width: 100%; height: calc(var(--p, 0) * 100%); }
  .tl-item { display: grid; grid-template-columns: 58px 1fr; column-gap: 18px; padding-bottom: 26px; text-align: left; }
  .tl-dot { grid-row: span 2; margin: 0; }
  .tl-item h4 { align-self: end; margin: 4px 0 2px; }
  .adv-grid { grid-template-columns: 1fr; }
  .adv:nth-child(even), html.js .adv:nth-child(even)[data-reveal].in { transform: none; }
  .about-mission { grid-template-columns: 1fr; }
  .contact-card { padding: 22px; }
  .contact-list a, .contact-list div > span { font-size: 15.5px; }
  .footer-cols { grid-template-columns: 1fr 1fr; }
  .footer-bottom { padding: 22px 64px 0 16px; }
  .to-top { right: 16px; bottom: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    transition-delay: 0s !important;
  }
}