/* ===== 幅相源官网 共用样式（浅色版） ===== */
:root {
  --bg: #e7eef6;
  --surface: #ffffff;
  --surface-2: #dbe6f1;
  --surface-3: #cfdded;
  --ink: #16233b;
  --ink-dim: #5c6c85;
  --line: rgba(22,54,90,0.12);
  --line-soft: rgba(22,54,90,0.09);
  --cyan: #0f52ba;            /* 主强调色（深宝石蓝） */
  --cyan-dim: rgba(15,82,186,0.10);
  --blue: #1a6ee0;
  --red: #e8443a;
  --text: var(--ink);
  --text-dim: var(--ink-dim);
  --radius: 14px;
  --shadow-card: 0 4px 18px rgba(22,54,90,0.08);
  --shadow-pop: 0 24px 60px rgba(22,54,90,0.16);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
section { padding: 84px 0; }
section.compact { padding: 56px 0; }
.dark-alt { background: var(--surface-2); border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }

/* ===== 顶栏 ===== */
.topbar { background: var(--surface-3); border-bottom: 1px solid var(--line-soft); font-size: 12px; color: var(--ink-dim); }
.topbar .wrap { display: flex; justify-content: space-between; padding: 6px 24px; }
.topbar span + span { margin-left: 18px; }

/* ===== 导航 ===== */
header.nav { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,0.90); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line-soft); }
.nav .wrap { display: flex; align-items: center; height: 68px; gap: 40px; }
.logo { display: flex; align-items: center; gap: 12px; font-size: 20px; font-weight: 700; letter-spacing: 1px; flex: none; color: var(--ink); }
.logo .mark { width: 46px; height: 46px; border-radius: 11px; background: #fff; display: grid; place-items: center; box-shadow: 0 2px 10px rgba(22,54,90,0.16), inset 0 0 0 1px var(--line-soft); }
.logo .mark img { width: 42px; height: 42px; display: block; }
.f-logo { width: 66px; height: 66px; padding: 5px; background: #fff; border-radius: 13px; display: block; margin-bottom: 16px; box-sizing: border-box; box-shadow: 0 2px 10px rgba(22,54,90,0.14), inset 0 0 0 1px var(--line-soft); }
.logo small { display: block; font-size: 10px; font-weight: 400; color: var(--ink-dim); letter-spacing: 2px; }
nav.menu { display: flex; gap: 4px; flex: 1; }
nav.menu a { padding: 8px 13px; border-radius: 8px; font-size: 15px; color: var(--ink-dim); white-space: nowrap; transition: .2s; }
nav.menu a:hover { color: var(--ink); background: var(--surface-2); }
nav.menu a.active { color: var(--cyan); background: var(--cyan-dim); font-weight: 600; }
.btn-quote { background: linear-gradient(135deg, var(--cyan), var(--blue)); color: #fff; font-weight: 700; font-size: 14px; padding: 10px 22px; border-radius: 8px; flex: none; box-shadow: 0 4px 14px rgba(15,82,186,0.28); }

/* ===== 按钮 ===== */
.btn-main { display: inline-block; background: linear-gradient(135deg, var(--cyan), var(--blue)); color: #fff; font-weight: 700; padding: 13px 30px; border-radius: 10px; box-shadow: 0 6px 18px rgba(15,82,186,0.30); }
.btn-ghost { display: inline-block; border: 1px solid rgba(22,54,90,0.28); padding: 13px 30px; border-radius: 10px; color: var(--ink); transition: .2s; }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }
.btn-more { display: inline-block; margin-top: 18px; font-size: 13px; color: var(--cyan); font-weight: 600; }

/* ===== 内页 Hero ===== */
.page-hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(800px 300px at 80% 0%, rgba(15,82,186,0.10), transparent 60%),
    linear-gradient(180deg, #f2f7fc, var(--surface-2));
  border-bottom: 1px solid var(--line-soft);
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(22,54,90,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22,54,90,0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 50% 40%, #000 30%, transparent 75%);
}
.page-hero .wrap { position: relative; padding: 64px 24px; }
.crumb { font-size: 13px; color: var(--ink-dim); margin-bottom: 14px; }
.crumb a:hover { color: var(--cyan); }
.page-hero h1 { font-size: 36px; font-weight: 800; }
.page-hero p.lead { margin-top: 14px; font-size: 16px; color: var(--ink-dim); max-width: 720px; }

/* ===== Section 标题 ===== */
.sec-head { text-align: center; margin-bottom: 52px; }
.sec-head.left { text-align: left; margin-bottom: 0; }
.sec-head .kicker { font-size: 13px; letter-spacing: 4px; color: var(--cyan); text-transform: uppercase; font-weight: 700; }
.sec-head h2 { font-size: 32px; font-weight: 800; margin-top: 8px; }
.sec-head p { color: var(--ink-dim); margin-top: 12px; max-width: 640px; margin-left: auto; margin-right: auto; }
.sec-head.left p { margin-left: 0; }

/* ===== 首页 Hero ===== */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(900px 400px at 75% 20%, rgba(15,82,186,0.10), transparent 60%),
    radial-gradient(700px 400px at 15% 90%, rgba(26,110,224,0.10), transparent 60%),
    linear-gradient(180deg, #f2f7fc, var(--surface-2));
  border-bottom: 1px solid var(--line-soft);
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(22,54,90,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22,54,90,0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 50% 40%, #000 30%, transparent 75%);
}
.hero .wrap { position: relative; padding: 96px 24px 88px; display: flex; gap: 48px; align-items: center; }
.hero-copy { flex: 1.2; }
.hero-tag { display: inline-block; font-size: 13px; color: var(--cyan); background: var(--cyan-dim); border: 1px solid rgba(15,82,186,0.35); padding: 5px 14px; border-radius: 999px; margin-bottom: 22px; font-weight: 600; }
.hero h1 { font-size: 44px; line-height: 1.25; font-weight: 800; }
.hero h1 em { font-style: normal; color: var(--cyan); }
.hero p.lead { margin: 18px 0 32px; font-size: 17px; color: var(--ink-dim); max-width: 560px; }
.hero-actions { display: flex; gap: 14px; }
.hero-wave { flex: 1; }
.hero-stats { display: flex; gap: 0; border-top: 1px solid var(--line-soft); background: rgba(255,255,255,0.75); }
.hero-stats .wrap { display: flex; }
.stat { flex: 1; padding: 26px 20px; text-align: center; }
.stat + .stat { border-left: 1px solid var(--line-soft); }
.stat b { display: block; font-size: 30px; color: var(--cyan); font-weight: 800; }
.stat span { font-size: 13px; color: var(--ink-dim); }

/* ===== 卡片 ===== */
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.pillar {
  background: var(--surface);
  border: 1px solid var(--line-soft); border-radius: var(--radius);
  padding: 34px 28px; position: relative; overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform .25s, box-shadow .25s;
  display: flex; flex-direction: column;
}
.pillar:hover { transform: translateY(-6px); box-shadow: 0 14px 34px rgba(22,54,90,0.14); }
.pillar .icon { width: 52px; height: 52px; border-radius: 12px; display: grid; place-items: center; background: var(--cyan-dim); margin-bottom: 20px; }
.pillar h3 { font-size: 20px; margin-bottom: 10px; }
.pillar p { font-size: 14px; color: var(--ink-dim); margin-bottom: 16px; }
.pillar ul { list-style: none; font-size: 13px; color: var(--ink-dim); }
.pillar ul li { padding: 5px 0; border-top: 1px dashed var(--line-soft); }
.pillar ul li::before { content: "▸"; color: var(--cyan); margin-right: 8px; }
.pillar .btn-more { margin-top: auto; padding-top: 18px; }

.prod-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.prod { background: var(--surface); border: 1px solid var(--line-soft); border-radius: 12px; padding: 24px 20px; transition: .2s; box-shadow: var(--shadow-card); }
.prod:hover { border-color: rgba(15,82,186,0.5); transform: translateY(-3px); box-shadow: 0 10px 26px rgba(22,54,90,0.12); }
.prod .p-icon { font-size: 26px; margin-bottom: 12px; }
.prod h4 { font-size: 15px; margin-bottom: 6px; }
.prod span { font-size: 12px; color: var(--ink-dim); }

.sol-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.sol {
  position: relative; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line-soft); padding: 30px 26px 26px;
  background: linear-gradient(160deg, #ffffff, var(--surface-2));
  box-shadow: var(--shadow-card);
  min-height: 190px; display: flex; flex-direction: column; justify-content: flex-end;
  transition: .25s;
}
.sol:hover { border-color: rgba(15,82,186,0.5); transform: translateY(-4px); box-shadow: 0 12px 30px rgba(22,54,90,0.13); }
.sol .big { font-size: 34px; position: absolute; top: 20px; left: 24px; opacity: .9; }
.sol h4 { font-size: 17px; margin-bottom: 6px; }
.sol p { font-size: 13px; color: var(--ink-dim); }
.sol.sol-wide { min-height: auto; }
.sol .tags { margin-top: 12px; display: flex; flex-wrap: wrap; gap: 6px; }
.sol .tags i { font-style: normal; font-size: 11px; color: var(--cyan); background: var(--cyan-dim); border: 1px solid rgba(15,82,186,0.3); padding: 2px 9px; border-radius: 999px; font-weight: 600; }

/* ===== 图文两栏 ===== */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.feature-list { list-style: none; margin-top: 26px; }
.feature-list li { display: flex; gap: 14px; padding: 13px 0; border-bottom: 1px dashed var(--line-soft); }
.feature-list .f-ico { flex: none; width: 34px; height: 34px; border-radius: 8px; background: var(--cyan-dim); color: var(--cyan); display: grid; place-items: center; font-size: 15px; font-weight: 700; }
.feature-list b { display: block; font-size: 15px; }
.feature-list span.sub { font-size: 13px; color: var(--ink-dim); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.chip { font-size: 12px; border: 1px solid rgba(15,82,186,0.4); color: var(--cyan); padding: 4px 12px; border-radius: 999px; background: var(--cyan-dim); font-weight: 600; }

/* ===== 机柜示意（保留深色：设备实感） ===== */
.rack { background: linear-gradient(180deg, #17233d, #0d1526); border: 1px solid rgba(255,255,255,0.08); border-radius: var(--radius); padding: 22px; color: #dbe6f5; box-shadow: var(--shadow-pop); }
.rack .r-head { display: flex; justify-content: space-between; font-size: 12px; color: #8fa3bd; margin-bottom: 14px; }
.r-module { background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.10); border-radius: 8px; padding: 12px 14px; margin-bottom: 10px; display: flex; align-items: center; gap: 12px; font-size: 13px; }
.r-module .lamp { width: 8px; height: 8px; border-radius: 50%; background: #35d07f; box-shadow: 0 0 8px #35d07f; }
.r-module .lamp.amber { background: #f0b429; box-shadow: 0 0 8px #f0b429; }
.r-module span.tag { margin-left: auto; font-size: 11px; color: #4fd6e8; background: rgba(15,82,186,0.16); padding: 2px 8px; border-radius: 6px; }

/* ===== 软件窗口示意（保留深色：软件界面实感） ===== */
.sw-window { background: linear-gradient(180deg, #17233d, #0d1526); border: 1px solid rgba(255,255,255,0.08); border-radius: var(--radius); overflow: hidden; color: #dbe6f5; box-shadow: var(--shadow-pop); }
.sw-bar { display: flex; align-items: center; gap: 7px; background: rgba(255,255,255,0.07); padding: 10px 14px; }
.dot { width: 10px; height: 10px; border-radius: 50%; }
.sw-bar span { font-size: 11px; color: #8fa3bd; margin-left: 8px; }
.sw-body { padding: 16px; }
.sw-kpis { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; margin-bottom: 14px; }
.kpi { background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.10); border-radius: 8px; padding: 12px; }
.kpi b { display: block; font-size: 18px; color: #4fd6e8; }
.kpi span { font-size: 11px; color: #8fa3bd; }
.sw-chart { background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.10); border-radius: 8px; padding: 12px; }
.sw-chart svg { display: block; width: 100%; height: auto; }
.sw-legend { display: flex; gap: 16px; font-size: 11px; color: #8fa3bd; margin-top: 8px; }
.sw-legend i { display: inline-block; width: 14px; height: 3px; border-radius: 2px; margin-right: 5px; vertical-align: middle; }

/* ===== 表格 ===== */
.spec-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.spec-table th, .spec-table td { padding: 11px 14px; text-align: left; border-bottom: 1px solid var(--line-soft); }
.spec-table th { color: var(--cyan); font-weight: 700; background: var(--cyan-dim); white-space: nowrap; }
.spec-table td { color: var(--ink-dim); }
.spec-table td:first-child { color: var(--ink); font-family: ui-monospace, Consolas, monospace; }
.table-card { background: var(--surface); border: 1px solid var(--line-soft); border-radius: var(--radius); padding: 8px; overflow-x: auto; box-shadow: var(--shadow-card); }
.table-note { font-size: 12px; color: var(--ink-dim); margin-top: 10px; }

/* ===== 流程步骤 ===== */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: step; }
.step { background: var(--surface); border: 1px solid var(--line-soft); border-radius: 12px; padding: 24px 22px; position: relative; box-shadow: var(--shadow-card); }
.step::before {
  counter-increment: step; content: "0" counter(step);
  font-size: 26px; font-weight: 800; color: rgba(15,82,186,0.35);
  display: block; margin-bottom: 8px;
}
.step h4 { font-size: 16px; margin-bottom: 6px; }
.step p { font-size: 13px; color: var(--ink-dim); }

/* ===== 关于/信息卡 ===== */
.about-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: start; }
.about-txt p { color: var(--ink-dim); font-size: 15px; margin-top: 16px; }
.about-txt strong { color: var(--ink); }
.about-txt strong.cy { color: var(--cyan); }
.quote { margin-top: 26px; padding: 18px 20px; border-left: 3px solid var(--cyan); background: var(--cyan-dim); font-size: 15px; color: var(--ink); border-radius: 0 10px 10px 0; }
.info-card { background: var(--surface); border: 1px solid var(--line-soft); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-card); }
.info-card .ic-head { padding: 16px 24px; font-size: 13px; letter-spacing: 2px; color: var(--cyan); font-weight: 700; background: var(--cyan-dim); border-bottom: 1px solid var(--line-soft); }
.info-row { display: flex; gap: 18px; padding: 14px 24px; border-bottom: 1px dashed var(--line-soft); font-size: 14px; }
.info-row:last-child { border-bottom: none; }
.info-row dt { flex: none; width: 140px; color: var(--ink-dim); font-size: 13px; }
.info-row dd { color: var(--ink); word-break: break-all; }
.info-row dd.mono { font-family: ui-monospace, Consolas, monospace; letter-spacing: 0.5px; }

/* ===== 时间线 ===== */
.timeline { position: relative; margin-left: 8px; padding-left: 30px; border-left: 2px solid rgba(15,82,186,0.3); }
.tl-item { position: relative; padding-bottom: 30px; }
.tl-item::before { content: ""; position: absolute; left: -39px; top: 5px; width: 12px; height: 12px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 0 4px rgba(15,82,186,0.15); }
.tl-item b { display: block; font-size: 17px; color: var(--cyan); }
.tl-item h4 { font-size: 16px; margin: 2px 0 4px; }
.tl-item p { font-size: 13px; color: var(--ink-dim); }

/* ===== 联系表单 ===== */
.contact-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 40px; align-items: start; }
.form-card { background: var(--surface); border: 1px solid var(--line-soft); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow-card); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; color: var(--ink-dim); margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%; background: var(--surface-2); border: 1px solid var(--line);
  border-radius: 8px; padding: 11px 14px; color: var(--ink); font-size: 14px;
  font-family: inherit; outline: none; transition: border-color .2s;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--cyan); }
.field textarea { min-height: 110px; resize: vertical; }
.form-note { font-size: 12px; color: var(--ink-dim); margin-top: 12px; }

/* ===== CTA 通栏 ===== */
.cta-band { background: linear-gradient(135deg, rgba(15,82,186,0.10), rgba(26,110,224,0.10)); border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }
.cta-band .wrap { display: flex; align-items: center; justify-content: space-between; padding-top: 46px; padding-bottom: 46px; gap: 24px; flex-wrap: wrap; }
.cta-band h3 { font-size: 24px; }
.cta-band p { color: var(--ink-dim); font-size: 14px; margin-top: 6px; }

/* ===== 页脚 ===== */
footer { background: var(--surface-3); padding: 60px 0 30px; border-top: 1px solid var(--line-soft); }
.f-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.f-grid h5 { font-size: 14px; margin-bottom: 14px; color: var(--ink); }
.f-grid a { display: block; font-size: 13px; color: var(--ink-dim); padding: 4px 0; }
.f-grid a:hover { color: var(--cyan); }
.f-grid p { font-size: 13px; color: var(--ink-dim); }
.copyright { text-align: center; font-size: 12px; color: rgba(92,108,133,0.75); border-top: 1px solid var(--line-soft); padding-top: 22px; }

/* ===== Hero 动态测量面板（保留深色：仪器屏幕实感） ===== */
.hero-vis { flex: 1; max-width: 520px; width: 100%; }
.vis-card {
  position: relative; overflow: hidden;
  background: linear-gradient(180deg, #17233d, #0b1324);
  border: 1px solid rgba(15,82,186,0.35);
  border-radius: 16px; padding: 16px 16px 14px; color: #dbe6f5;
  box-shadow: var(--shadow-pop);
}
.vis-card::before {
  content: ""; position: absolute; left: -30%; top: -60%; width: 160%; height: 120%;
  background: radial-gradient(closest-side, rgba(15,82,186,0.14), transparent 70%);
  animation: visGlow 8s ease-in-out infinite alternate; pointer-events: none;
}
@keyframes visGlow { from { transform: translate3d(-8%, -4%, 0); } to { transform: translate3d(8%, 6%, 0); } }

.vis-head { display: flex; align-items: center; gap: 8px; font-size: 12px; color: #8fa3bd; position: relative; }
.live-dot {
  width: 7px; height: 7px; border-radius: 50%; background: #35d07f;
  box-shadow: 0 0 0 0 rgba(53,208,127,0.6); animation: pulseDot 1.8s ease-out infinite;
}
@keyframes pulseDot {
  0% { box-shadow: 0 0 0 0 rgba(53,208,127,0.6); }
  70% { box-shadow: 0 0 0 8px rgba(53,208,127,0); }
  100% { box-shadow: 0 0 0 0 rgba(53,208,127,0); }
}
.vis-badge {
  margin-left: auto; font-size: 10px; font-weight: 700; color: #04121f;
  background: #4fd6e8; padding: 2px 9px; border-radius: 4px; letter-spacing: 1px;
}
.vis-svg { display: block; width: 100%; height: auto; margin-top: 6px; position: relative; }

/* 波形逐段扫描绘制 */
.trace-anim { stroke-dasharray: 1000; stroke-dashoffset: 1000; animation: traceDraw 4.5s ease-out infinite; }
@keyframes traceDraw {
  0%   { stroke-dashoffset: 1000; opacity: 0.15; }
  45%  { stroke-dashoffset: 0;    opacity: 1; }
  88%  { stroke-dashoffset: 0;    opacity: 1; }
  100% { stroke-dashoffset: 0;    opacity: 0.15; }
}
.trace-fill { animation: fillIn 4.5s ease-out infinite; }
@keyframes fillIn {
  0%, 20% { opacity: 0; } 55% { opacity: 1; } 88% { opacity: 1; } 100% { opacity: 0; }
}

/* 频谱柱 */
.vis-spec { display: flex; align-items: flex-end; gap: 4px; height: 38px; margin-top: 12px; position: relative; }
.vis-spec i {
  flex: 1; border-radius: 2px; transform-origin: bottom;
  background: linear-gradient(180deg, #4fd6e8, rgba(79,214,232,0.12));
  animation: barPulse 1.6s ease-in-out infinite;
}
@keyframes barPulse { 0%, 100% { transform: scaleY(0.35); opacity: .55; } 50% { transform: scaleY(1); opacity: 1; } }
.vis-spec i:nth-child(1) { animation-delay: 0s; height: 60%; }
.vis-spec i:nth-child(2) { animation-delay: .12s; height: 82%; }
.vis-spec i:nth-child(3) { animation-delay: .24s; height: 46%; }
.vis-spec i:nth-child(4) { animation-delay: .36s; height: 100%; }
.vis-spec i:nth-child(5) { animation-delay: .48s; height: 72%; }
.vis-spec i:nth-child(6) { animation-delay: .6s; height: 90%; }
.vis-spec i:nth-child(7) { animation-delay: .72s; height: 54%; }
.vis-spec i:nth-child(8) { animation-delay: .84s; height: 78%; }
.vis-spec i:nth-child(9) { animation-delay: .96s; height: 38%; }
.vis-spec i:nth-child(10) { animation-delay: 1.08s; height: 66%; }
.vis-spec i:nth-child(11) { animation-delay: 1.2s; height: 88%; }
.vis-spec i:nth-child(12) { animation-delay: 1.32s; height: 50%; }

/* 读数值 */
.vis-readout { display: flex; gap: 16px; flex-wrap: wrap; font-size: 11px; color: #8fa3bd; margin-top: 12px; position: relative; }
.vis-readout b { color: #4fd6e8; font-family: ui-monospace, Consolas, monospace; font-size: 12px; transition: color .2s; }

/* 测试流程流动 */
.vis-flow { display: flex; align-items: center; margin-top: 14px; padding-top: 12px; border-top: 1px dashed rgba(255,255,255,0.12); position: relative; }
.vis-flow .node {
  font-size: 10px; color: #dbe6f5; background: rgba(255,255,255,0.08);
  border: 1px solid rgba(79,214,232,0.35); border-radius: 6px;
  padding: 4px 8px; white-space: nowrap;
}
.vis-flow .conn { position: relative; flex: 1; height: 1px; background: rgba(79,214,232,0.3); }
.vis-flow .conn i {
  position: absolute; top: -3px; left: 0; width: 7px; height: 7px; border-radius: 50%;
  background: #4fd6e8; box-shadow: 0 0 10px #4fd6e8; opacity: 0;
  animation: flowDot 1.8s linear infinite;
}
.vis-flow .conn.d1 i { animation-delay: .6s; }
.vis-flow .conn.d2 i { animation-delay: 1.2s; }
@keyframes flowDot {
  0%   { left: 0; opacity: 0; }
  15%  { opacity: 1; }
  85%  { opacity: 1; }
  100% { left: calc(100% - 7px); opacity: 0; }
}

/* ===== 响应式 ===== */
@media (max-width: 960px) {
  .hero .wrap { flex-direction: column; padding: 64px 24px; }
  .hero-vis { max-width: 100%; }
  .hero h1 { font-size: 32px; }
  .page-hero h1 { font-size: 28px; }
  .pillars, .sol-grid, .steps { grid-template-columns: 1fr; }
  .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .split, .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .f-grid { grid-template-columns: 1fr 1fr; }
  nav.menu { display: none; }
  .hero-stats .wrap { flex-wrap: wrap; }
  .stat { flex: 1 1 50%; }
  .form-row { grid-template-columns: 1fr; }
}