/* ============================================================
   ZONHO 众好实验仪器 · 官网样式
   设计基调：浅色科技风（亮蓝主调），单一强调色（仪器蓝）
   圆角规则：卡片 14px / 输入框 10px / 按钮胶囊 —— 全站统一
   动效纪律：仅滚动进场、hero 微动效与悬停反馈；尊重 reduced-motion
   ============================================================ */

:root {
  --bg: #f4f7fc;
  --bg-soft: #e9eff8;
  --surface: #ffffff;
  --surface-2: #eef4fb;
  --line: rgba(30, 58, 95, 0.13);
  --line-strong: rgba(30, 58, 95, 0.24);
  --text: #16233b;
  --muted: #4a5c78;
  --faint: #5f7396;
  --accent: #0a6cc4;
  --accent-soft: rgba(10, 108, 196, 0.09);
  --accent-line: rgba(10, 108, 196, 0.32);
  --accent-ink: #ffffff;
  --danger: #dc2626;
  --ok: #059669;
  --r-card: 14px;
  --r-input: 10px;
  --shadow-card: 0 10px 30px rgba(23, 58, 110, 0.1);
  --font: "PingFang SC", "Microsoft YaHei", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

/* ---------- 通用文字 ---------- */
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 14px; letter-spacing: 0.01em; }
p { margin: 0 0 12px; }
.num { font-variant-numeric: tabular-nums; }

/* ---------- 导航（桌面单行，≤ 880px 折叠为汉堡） ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(255, 255, 255, 0.86);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.3s ease;
}
.nav.scrolled { box-shadow: 0 8px 24px rgba(23, 58, 110, 0.12); }
.nav-inner {
  max-width: 1180px; margin: 0 auto; padding: 0 24px;
  height: 68px; display: flex; align-items: center; gap: 20px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 19px; letter-spacing: 0.04em; }
.brand .mark {
  width: 34px; height: 34px; border-radius: 9px; flex: none;
  background: linear-gradient(135deg, var(--accent) 0%, #1d6fa8 100%);
  color: var(--accent-ink); display: grid; place-items: center;
  font-size: 15px; font-weight: 900; letter-spacing: 0;
  overflow: hidden;
}
.brand .mark img { width: 100%; height: 100%; object-fit: contain; border-radius: inherit; display: block; }
.brand .mark.has-logo {
  width: 42px; height: 42px; padding: 4px;
  background: #ffffff; border: 1px solid var(--line);
  box-shadow: 0 2px 8px rgba(10, 108, 196, 0.18);
}
footer .brand .mark.has-logo { background: #ffffff; border-color: rgba(148, 178, 215, 0.45); }
.brand small { display: block; font-size: 10.5px; font-weight: 500; color: var(--muted); letter-spacing: 0.22em; line-height: 1; margin-top: 3px; }
.brand .t { line-height: 1.1; }
.nav-links { display: flex; align-items: center; margin-left: auto; }
.nav-links a {
  padding: 8px 14px; border-radius: 999px; font-size: 14.5px; color: var(--muted); margin: 0 2px;
  transition: color 0.2s, background 0.2s;
}
.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--accent); background: var(--accent-soft); }
.nav-cta { margin-left: 10px; }
.nav-tel {
  display: inline-flex; align-items: center; gap: 7px; flex: none;
  color: var(--accent); font-weight: 700; font-size: 14.5px;
  padding: 8px 13px; border-radius: 999px; margin-left: 8px;
  border: 1px solid transparent; white-space: nowrap;
  transition: background 0.2s, border-color 0.2s;
}
.nav-tel:hover { background: var(--accent-soft); border-color: var(--accent-line); }
.nav-tel svg { flex: none; }
.nav-burger {
  display: none; margin-left: auto; width: 42px; height: 42px; border: 1px solid var(--line);
  border-radius: 10px; background: transparent; color: var(--text); cursor: pointer;
}
.nav-burger span, .nav-burger span::before, .nav-burger span::after {
  content: ""; display: block; width: 18px; height: 2px; background: var(--text);
  margin: 4px auto; border-radius: 2px; transition: transform 0.25s ease, opacity 0.2s;
}
.nav.open .nav-burger span { background: transparent; }
.nav.open .nav-burger span::before { transform: translateY(6px) rotate(45deg); }
.nav.open .nav-burger span::after { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: 999px; padding: 12px 26px; font-size: 15px; font-weight: 600;
  cursor: pointer; border: 1px solid transparent; white-space: nowrap;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s, border-color 0.2s;
}
.btn:active { transform: translateY(1px) scale(0.99); }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { box-shadow: 0 6px 22px rgba(10, 108, 196, 0.32); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line-strong); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm { padding: 8px 18px; font-size: 13.5px; }
.btn-block { width: 100%; }
.btn[disabled] { opacity: 0.55; cursor: not-allowed; }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; }
#hero-canvas { position: absolute; top: 0; right: 0; bottom: 0; left: 0; width: 100%; height: 100%; }
.hero-grid-lines {
  position: absolute; top: 0; right: 0; bottom: 0; left: 0; pointer-events: none;
  background-image: linear-gradient(rgba(37, 99, 235, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 99, 235, 0.055) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 40%, transparent 100%);
}
.hero-inner {
  position: relative; max-width: 1180px; margin: 0 auto; padding: 88px 24px 72px;
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px; font-size: 13px; letter-spacing: 0.14em;
  color: var(--accent); background: var(--accent-soft); border: 1px solid var(--accent-line);
  padding: 6px 14px; border-radius: 999px; margin-bottom: 22px;
}
.hero h1 { font-size: 46px; font-size: clamp(34px, 5vw, 56px); font-weight: 800; letter-spacing: 0.01em; }
.hero h1 .accent { color: var(--accent); display: block; }
.hero-sub { color: var(--muted); font-size: 16.5px; max-width: 56ch; margin: 18px 0 30px; }
.hero-actions { display: flex; flex-wrap: wrap; }
.hero-actions .btn { margin: 0 14px 12px 0; }

.hero-visual { position: relative; }
.hero-visual .frame {
  position: relative; border-radius: var(--r-card); overflow: hidden;
  border: 1px solid var(--line-strong); background: var(--surface);
  box-shadow: var(--shadow-card);
}
.hero-visual .frame::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(160deg, rgba(10, 108, 196, 0.06), transparent 45%);
  pointer-events: none;
}
.hero-visual img { width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; }
.hero-visual figcaption {
  position: absolute; left: 14px; bottom: 14px; font-size: 12.5px; color: var(--muted);
  background: rgba(255, 255, 255, 0.85); border: 1px solid var(--line);
  padding: 6px 12px; border-radius: 999px; backdrop-filter: blur(6px);
}
/* ---------- 数据条 ---------- */
.stats {
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.6);
}
.stats-inner {
  max-width: 1180px; margin: 0 auto; padding: 30px 24px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
}
.stat { text-align: center; }
.stat .v { font-size: 32px; font-size: clamp(28px, 3.4vw, 40px); font-weight: 800; color: var(--accent); font-variant-numeric: tabular-nums; }
.stat .v small { font-size: 0.55em; font-weight: 700; }
.stat .l { color: var(--muted); font-size: 13.5px; margin-top: 2px; }

/* ---------- 区块 ---------- */
.section { padding: 88px 0; }
.section.soft { background: rgba(233, 239, 248, 0.75); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sec-head { max-width: 720px; margin-bottom: 44px; }
.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.sec-title { font-size: 30px; font-size: clamp(26px, 3.2vw, 36px); font-weight: 800; }
.sec-title .thin { color: var(--muted); font-weight: 600; }
.sec-desc { color: var(--muted); margin-top: 10px; }

/* ---------- 产品卡片 ---------- */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.p-card {
  position: relative; background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-card); overflow: hidden; cursor: pointer;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  display: flex; flex-direction: column;
}
.p-card:hover { transform: translateY(-5px); border-color: var(--accent-line); box-shadow: var(--shadow-card); }
.p-card .thumb { height: 240px; background: var(--bg-soft); overflow: hidden; position: relative; }
@supports (aspect-ratio: 1 / 1) {
  .p-card .thumb { height: auto; aspect-ratio: 1 / 1; }
}
.p-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.p-card:hover .thumb img { transform: scale(1.05); }
.p-card .thumb .ph {
  width: 100%; height: 100%; display: grid; place-items: center; color: var(--faint);
  background:
    radial-gradient(circle at 30% 20%, rgba(10, 108, 196, 0.06), transparent 50%),
    linear-gradient(rgba(37, 99, 235, 0.07) 1px, transparent 1px) 0 0 / 28px 28px,
    linear-gradient(90deg, rgba(37, 99, 235, 0.07) 1px, transparent 1px) 0 0 / 28px 28px,
    var(--bg-soft);
  font-size: 13px; letter-spacing: 0.08em; text-align: center; padding: 12px;
}
.p-card .body { padding: 18px 20px 20px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.p-card .cat { font-size: 12px; color: var(--accent); letter-spacing: 0.06em; }
.p-card h3 { font-size: 17.5px; margin: 0; }
.p-card .model { font-size: 12.5px; color: var(--faint); }
.p-card .sum { color: var(--muted); font-size: 13.8px; flex: 1; display: -webkit-box; -webkit-line-clamp: 3; line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.p-card .more { color: var(--accent); font-size: 13.5px; display: inline-flex; align-items: center; gap: 6px; }
.card-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.badge-feat {
  flex: none;
  font-size: 11.5px; letter-spacing: 0.1em; color: var(--accent-ink);
  background: var(--accent); padding: 3px 10px; border-radius: 999px; font-weight: 700;
  line-height: 1.4;
}

/* ---------- 分类筛选 ---------- */
.filter-bar { display: flex; flex-wrap: wrap; margin-bottom: 30px; }
.chip {
  padding: 9px 18px; border-radius: 999px; font-size: 14px; cursor: pointer;
  border: 1px solid var(--line); background: transparent; color: var(--muted);
  transition: all 0.2s ease; margin: 0 10px 10px 0;
}
.chip:hover { border-color: var(--accent-line); color: var(--text); }
.chip.on { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }

/* ---------- 六大理由 / 特色卡 ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.f-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-card);
  padding: 26px 24px; transition: border-color 0.25s, transform 0.25s;
}
.f-card:hover { border-color: var(--accent-line); transform: translateY(-3px); }
.f-card .ic {
  width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent); margin-bottom: 16px;
}
.f-card h3 { font-size: 17px; margin-bottom: 8px; }
.f-card p { color: var(--muted); font-size: 14px; margin: 0; }
.f-card .no { float: right; color: var(--faint); font-size: 13px; font-variant-numeric: tabular-nums; }

/* ---------- 公司简介（左文右图，非对称） ---------- */
.about-split { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 44px; align-items: start; }
.about-split .pic { border-radius: var(--r-card); overflow: hidden; border: 1px solid var(--line); position: sticky; top: 96px; }
.about-split .pic img { width: 100%; height: 100%; object-fit: cover; }
.pillars { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 26px; }
.pillar { border: 1px solid var(--line); border-radius: var(--r-card); padding: 16px 18px; background: var(--bg-soft); }
.pillar b { color: var(--accent); display: block; margin-bottom: 4px; font-size: 15px; }
.pillar span { color: var(--muted); font-size: 13px; line-height: 1.6; display: block; }

/* ---------- 服务流程时间线 ---------- */
.flow { display: grid; grid-template-columns: repeat(6, 1fr); gap: 0; position: relative; margin-top: 10px; }
.flow::before {
  content: ""; position: absolute; left: 4%; right: 4%; top: 23px; height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-line) 12%, var(--accent-line) 88%, transparent);
}
.flow-step { text-align: center; padding: 0 8px; position: relative; }
.flow-step .dot {
  width: 46px; height: 46px; border-radius: 50%; margin: 0 auto 14px;
  background: var(--bg-soft); border: 2px solid var(--accent-line);
  display: grid; place-items: center; color: var(--accent); font-weight: 700; font-size: 15px;
  position: relative; z-index: 1;
}
.flow-step:hover .dot { background: var(--accent); color: var(--accent-ink); }
.flow-step b { display: block; font-size: 15px; margin-bottom: 4px; }
.flow-step span { color: var(--muted); font-size: 12.8px; line-height: 1.55; display: block; }

/* ---------- 行业应用 ---------- */
.apps-scroll { display: flex; overflow-x: auto; padding: 4px 2px 14px; scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch; }
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.partner-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-card);
  padding: 18px 12px 14px; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 10px; min-height: 150px;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.partner-card img { max-height: 84px; max-width: 100%; object-fit: contain; }
.pname { font-size: 14px; color: var(--text); font-weight: 700; letter-spacing: 0.02em; }
.partner-card:hover { border-color: var(--accent-line); transform: translateY(-3px); box-shadow: var(--shadow-card); }
@media (max-width: 1024px) { .partner-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 640px) { .partner-grid { grid-template-columns: repeat(2, 1fr); } }
.apps-scroll::-webkit-scrollbar { height: 6px; }
.apps-scroll::-webkit-scrollbar-thumb { background: var(--surface-2); border-radius: 3px; }
.app-pill {
  flex: 0 0 220px; scroll-snap-align: start; margin-right: 16px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-card);
  padding: 22px 20px; transition: border-color 0.2s;
}
.app-pill:hover { border-color: var(--accent-line); }
.app-pill b { color: var(--accent); display: block; font-size: 16.5px; margin-bottom: 6px; }
.app-pill span { color: var(--muted); font-size: 13px; line-height: 1.6; display: block; }

/* ---------- 新闻 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.n-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-card);
  overflow: hidden; cursor: pointer; transition: transform 0.25s, border-color 0.25s;
  display: flex; flex-direction: column;
}
.n-card:hover { transform: translateY(-4px); border-color: var(--accent-line); }
.n-card .thumb { height: 190px; background: var(--bg-soft); overflow: hidden; }
@supports (aspect-ratio: 16 / 9) {
  .n-card .thumb { height: auto; aspect-ratio: 16 / 9; }
}
.n-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.n-card .thumb .ph {
  width: 100%; height: 100%; display: grid; place-items: center; color: var(--faint);
  background: linear-gradient(rgba(37, 99, 235, 0.06) 1px, transparent 1px) 0 0 / 26px 26px,
    linear-gradient(90deg, rgba(37, 99, 235, 0.06) 1px, transparent 1px) 0 0 / 26px 26px, var(--bg-soft);
  font-size: 13px;
}
.n-card .body { padding: 18px 20px 20px; flex: 1; display: flex; flex-direction: column; gap: 8px; }
.n-card .meta { display: flex; gap: 12px; font-size: 12.5px; color: var(--faint); align-items: center; }
.n-card .meta .cat { color: var(--accent); }
.n-card h3 { font-size: 16px; margin: 0; line-height: 1.45; }
.n-card .sum { color: var(--muted); font-size: 13.5px; flex: 1; }
.n-card .date { font-variant-numeric: tabular-nums; }

/* ---------- 联系区块 ---------- */
.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 40px; align-items: start; }
.info-list { display: grid; gap: 16px; }
.info-item {
  display: flex; gap: 14px; background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-card); padding: 18px 20px; align-items: flex-start;
}
.info-item .ic { flex: none; width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent); }
.info-item b { display: block; font-size: 14.5px; margin-bottom: 3px; }
.info-item span, .info-item a { color: var(--muted); font-size: 14px; line-height: 1.6; word-break: break-all; }
.info-item a:hover { color: var(--accent); }

/* ---------- 表单 ---------- */
.form-panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-card); padding: 28px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13.5px; color: var(--text); margin-bottom: 7px; font-weight: 600; }
.field label em { color: var(--accent); font-style: normal; }
.field input, .field textarea, .field select {
  width: 100%; background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--r-input);
  color: var(--text); padding: 12px 14px; font-size: 14.5px; font-family: inherit; outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field input:focus, .field textarea:focus, .field select:focus {
  border-color: var(--accent); box-shadow: 0 0 0 3px rgba(10, 108, 196, 0.13);
}
.field textarea { min-height: 120px; resize: vertical; }
.field .err { display: none; color: var(--danger); font-size: 12.5px; margin-top: 5px; }
.field.invalid input, .field.invalid textarea { border-color: var(--danger); }
.field.invalid .err { display: block; }
.form-tip { color: var(--faint); font-size: 12.5px; margin-top: 12px; }

/* ---------- 页脚 ---------- */
footer { background: #0f2340; border-top: 1px solid var(--line); margin-top: 0; }
.foot-inner {
  max-width: 1180px; margin: 0 auto; padding: 56px 24px 28px;
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 36px;
}
.foot-col h4 { font-size: 15px; margin-bottom: 16px; color: var(--text); }
.foot-col a, .foot-col span { display: block; color: var(--muted); font-size: 13.5px; padding: 4px 0; }
.foot-col a:hover { color: var(--accent); }
.foot-brand p { color: var(--muted); font-size: 13.5px; margin-top: 12px; }
.foot-bottom {
  border-top: 1px solid var(--line); padding: 18px 24px; text-align: center;
  color: var(--faint); font-size: 12.5px;
}
.foot-bottom a { color: var(--faint); }
.foot-bottom a:hover { color: var(--accent); }

/* 深色页脚上的文字适配 */
footer .brand { color: #e8f0fc; }
footer .brand small { color: #9db1cf; }
footer .foot-brand p { color: #aebfd9; }
footer .foot-col h4 { color: #e8f0fc; }
footer .foot-col a, footer .foot-col span { color: #aebfd9; }
footer .foot-col a:hover { color: #6fb6f2; }
.foot-bottom { border-top: 1px solid rgba(148, 178, 215, 0.14); color: #8fa3c2; }
.foot-bottom a { color: #8fa3c2; }
.foot-bottom a:hover { color: #6fb6f2; }

/* ---------- 浮动联系栏 ---------- */
.dock {
  position: fixed; right: 18px; bottom: 24px; z-index: 60;
  display: flex; flex-direction: column;
}
.dock > * + * { margin-top: 10px; }
.dock a, .dock button {
  width: 52px; height: 52px; border-radius: 50%; display: grid; place-items: center;
  background: var(--surface-2); border: 1px solid var(--line-strong); color: var(--text);
  cursor: pointer; box-shadow: var(--shadow-card); transition: all 0.2s ease; position: relative;
}
.dock a:hover, .dock button:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.dock .dock-main { background: var(--accent); color: var(--accent-ink); border: none; width: 56px; height: 56px; }
.dock .dock-main:hover { color: var(--accent-ink); box-shadow: 0 8px 26px rgba(10, 108, 196, 0.35); }
.dock .tip {
  position: absolute; right: 62px; top: 50%; transform: translateY(-50%);
  background: var(--surface-2); border: 1px solid var(--line-strong); color: var(--text);
  font-size: 12.5px; padding: 6px 12px; border-radius: 8px; white-space: nowrap;
  opacity: 0; pointer-events: none; transition: opacity 0.2s;
}
.dock a:hover .tip, .dock button:hover .tip { opacity: 1; }

/* ---------- 弹窗 ---------- */
.modal-mask {
  position: fixed; top: 0; right: 0; bottom: 0; left: 0; z-index: 80; background: rgba(15, 35, 64, 0.45);
  display: none; align-items: center; justify-content: center; padding: 24px;
  backdrop-filter: blur(4px);
}
.modal-mask.show { display: flex; }
.modal {
  background: var(--surface); border: 1px solid var(--line-strong); border-radius: var(--r-card);
  max-width: 680px; width: 100%; max-height: 88vh; overflow-y: auto; position: relative;
  box-shadow: var(--shadow-card); animation: pop 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes pop { from { transform: translateY(14px) scale(0.98); opacity: 0; } to { transform: none; opacity: 1; } }
.modal .m-close {
  position: absolute; top: 14px; right: 14px; z-index: 2; width: 36px; height: 36px;
  border-radius: 50%; border: 1px solid var(--line); background: rgba(255, 255, 255, 0.9);
  color: var(--text); cursor: pointer; font-size: 16px; display: grid; place-items: center;
}
.modal .m-close:hover { border-color: var(--accent); color: var(--accent); }
.modal .m-img { width: 100%; height: 300px; object-fit: cover; background: var(--bg-soft); }
.modal .m-img.sq { height: auto; aspect-ratio: 1 / 1; }
/* 产品详情图缩略条 */
.modal .m-gallery { display: flex; flex-wrap: wrap; gap: 8px; padding: 10px 14px 0; }
.modal .m-gthumb { width: 64px; height: 64px; object-fit: cover; border-radius: 8px; border: 2px solid var(--line); cursor: pointer; opacity: 0.85; transition: border-color 0.2s ease, opacity 0.2s ease; background: var(--bg-soft); display: block; }
.modal .m-gthumb:hover { opacity: 1; }
.modal .m-gthumb.on { border-color: var(--accent); opacity: 1; }
.modal .m-body { padding: 26px 28px 30px; }
.modal h3 { font-size: 21px; padding-right: 40px; }
.modal .m-cat { color: var(--accent); font-size: 13px; letter-spacing: 0.06em; }
.modal .m-text { color: var(--muted); font-size: 14.5px; }
.feat-list { list-style: none; margin: 16px 0 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.feat-list li { color: var(--muted); font-size: 13.8px; display: flex; gap: 8px; align-items: flex-start; }
.feat-list li::before { content: "✓"; color: var(--accent); font-weight: 700; flex: none; }
.m-actions { margin-top: 22px; display: flex; gap: 12px; flex-wrap: wrap; }

/* 快捷留言弹窗（小） */
.modal.slim { max-width: 460px; }
.modal.slim .m-body { padding: 26px; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 34px; transform: translateX(-50%) translateY(20px);
  background: var(--surface-2); color: var(--text); border: 1px solid var(--accent-line);
  padding: 12px 22px; border-radius: 999px; font-size: 14px; z-index: 100;
  opacity: 0; pointer-events: none; transition: all 0.3s ease; box-shadow: var(--shadow-card);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.err { border-color: rgba(248, 113, 113, 0.5); }

/* ---------- 内容更新提示条 ---------- */
.content-update-bar {
  position: fixed; left: 50%; bottom: 96px; transform: translateX(-50%);
  z-index: 99; background: var(--surface-2); border: 1px solid var(--accent-line);
  border-radius: 999px; padding: 10px 20px; font-size: 13.5px; color: var(--text);
  box-shadow: var(--shadow-card); display: flex; align-items: center; gap: 10px; white-space: nowrap;
}
.content-update-bar .cub-btn {
  border: 1px solid var(--accent); background: var(--accent); color: var(--accent-ink);
  border-radius: 999px; padding: 4px 12px; font-size: 12.5px; cursor: pointer; font-weight: 700;
}

/* ---------- 静态模式提示条 ---------- */
.static-note {
  background: rgba(10, 108, 196, 0.07); border-bottom: 1px solid var(--accent-line);
  color: var(--muted); font-size: 13px; text-align: center; padding: 8px 16px;
}
.static-note b { color: var(--accent); }

/* ---------- 滚动进场（JS 添加 .seen；无 JS 时直接可见） ---------- */
html.js .rv { opacity: 0; transform: translateY(26px); }
html.js .rv.seen {
  opacity: 1; transform: none;
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
html.js .rv.d1.seen { transition-delay: 0.08s; }
html.js .rv.d2.seen { transition-delay: 0.16s; }
html.js .rv.d3.seen { transition-delay: 0.24s; }

/* ---------- 首屏产品轮播 ---------- */
.hc-track {
  display: flex; overflow-x: auto; scroll-snap-type: x mandatory;
  scrollbar-width: none; -ms-overflow-style: none;
}
.hc-track::-webkit-scrollbar { display: none; }
.hc-slide {
  position: relative; flex: 0 0 100%; scroll-snap-align: start; height: auto; aspect-ratio: 4 / 3;
}
.hc-slide img { width: 100%; height: 100%; object-fit: cover; display: block; }
.hc-slide[data-pid] { cursor: pointer; }
.hc-cap {
  position: absolute; left: 14px; bottom: 14px; font-size: 12.5px; color: var(--muted);
  background: rgba(255, 255, 255, 0.9); border: 1px solid var(--line);
  padding: 6px 12px; border-radius: 999px; backdrop-filter: blur(6px);
}
.hc-btn {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 3;
  width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.92); color: var(--text); cursor: pointer;
  display: grid; place-items: center; box-shadow: var(--shadow-card);
  transition: all 0.2s; padding: 0;
}
.hc-btn:hover { border-color: var(--accent); color: var(--accent); }
.hc-prev { left: 10px; }
.hc-next { right: 10px; }
.hc-dots { position: absolute; bottom: 16px; right: 16px; z-index: 3; display: flex; gap: 6px; }
.hc-dot {
  width: 8px; height: 8px; border-radius: 999px; border: none; cursor: pointer;
  background: rgba(30, 58, 95, 0.25); transition: all 0.25s; padding: 0;
}
.hc-dot.on { background: var(--accent); width: 20px; }
@media (prefers-reduced-motion: reduce) {
  .hc-track { scroll-behavior: auto; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .product-grid, .grid-3, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(3, 1fr); row-gap: 30px; }
  .flow::before { display: none; }
  .foot-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 1020px) {
  .nav-links {
    display: none; position: absolute; top: 68px; left: 0; right: 0;
    background: rgba(255, 255, 255, 0.98); border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: stretch; padding: 12px 20px 18px; gap: 4px;
  }
  .nav.open .nav-links { display: flex; }
  .nav-links a { padding: 12px 14px; border-radius: 10px; margin: 0; }
  .nav-tel { padding: 8px; border-radius: 50%; margin-left: auto; }
  .nav-tel .num { display: none; }
  .nav-burger { display: block; }
  .nav-cta { margin: 8px 0 0; }
}
@media (max-width: 880px) {
  .hero-inner { grid-template-columns: 1fr; padding-top: 56px; gap: 36px; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .about-split, .contact-grid { grid-template-columns: 1fr; }
  .about-split .pic { position: static; }
}
@media (max-width: 640px) {
  .section { padding: 60px 0; }
  .product-grid, .grid-3, .grid-2, .news-grid { grid-template-columns: 1fr; }
  .flow { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: 1fr; }
  .feat-list { grid-template-columns: 1fr; }
  .foot-inner { grid-template-columns: 1fr; gap: 26px; }
  .dock { right: 12px; bottom: 14px; }
  .dock a, .dock button { width: 46px; height: 46px; }
  .dock .dock-main { width: 50px; height: 50px; }
  .modal .m-img { height: 210px; }
  .hero-inner { padding-top: 44px; padding-bottom: 48px; }
}

/* ---------- 动效纪律：reduced-motion 时关闭动效并强制内容可见 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html.js .rv { opacity: 1 !important; transform: none !important; }
  #hero-canvas, .cursor-glow, .click-ring { display: none; }
  .bg-tech::before, .bg-tech::after { animation: none !important; }
}

/* ============================================================
   科技感背景与鼠标交互层
   - .bg-tech：全站网格 + 两个缓慢漂移的光晕（HTML 静态节点，无 JS 也在）
   - .cursor-glow：光标跟随光晕（fx.js 创建，仅精确指针）
   - .click-ring：点击涟漪环（fx.js 创建）
   - .tilt：卡片 3D 倾斜时的光斑高光（fx.js 写入 --mx/--my）
   ============================================================ */
.bg-tech {
  position: fixed; top: 0; right: 0; bottom: 0; left: 0; z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(37, 99, 235, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 99, 235, 0.06) 1px, transparent 1px);
  background-size: 56px 56px;
}
.bg-tech::before, .bg-tech::after {
  content: ""; position: absolute; border-radius: 50%;
}
.bg-tech::before {
  width: 560px; height: 560px; top: -160px; right: -100px;
  background: radial-gradient(circle, rgba(10, 108, 196, 0.1), transparent 65%);
  animation: glowDrift 26s ease-in-out infinite alternate;
}
.bg-tech::after {
  width: 680px; height: 680px; bottom: -220px; left: -180px;
  background: radial-gradient(circle, rgba(10, 108, 196, 0.07), transparent 65%);
  animation: glowDrift 34s ease-in-out infinite alternate-reverse;
}
@keyframes glowDrift {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(-60px, 50px) scale(1.12); }
}
@media (hover: none) {
  .cursor-glow { display: none; }
}
.cursor-glow {
  position: fixed; top: 0; left: 0; z-index: 2; pointer-events: none;
  width: 520px; height: 520px; border-radius: 50%;
  background: radial-gradient(circle, rgba(10, 108, 196, 0.06), rgba(10, 108, 196, 0.022) 42%, transparent 68%);
  will-change: transform;
}
.click-ring {
  position: fixed; z-index: 90; pointer-events: none;
  width: 14px; height: 14px; margin: -7px 0 0 -7px; border-radius: 50%;
  border: 2px solid rgba(10, 108, 196, 0.55);
  animation: clickRing 0.5s cubic-bezier(0.2, 0.7, 0.3, 1) forwards;
}
@keyframes clickRing {
  from { transform: scale(0.4); opacity: 0.9; }
  to { transform: scale(5); opacity: 0; }
}
.tilt::after {
  content: ""; position: absolute; top: 0; right: 0; bottom: 0; left: 0;
  border-radius: inherit; pointer-events: none;
  background: radial-gradient(320px circle at var(--mx, 50%) var(--my, 50%), rgba(10, 108, 196, 0.09), transparent 65%);
  opacity: 0; transition: opacity 0.25s ease;
}
.tilt:hover::after { opacity: 1; }
.tilt { will-change: transform; }
.p-card, .n-card { position: relative; }
.f-card, .app-pill, .info-item { position: relative; overflow: hidden; }

/* ---------- 站内搜索 ---------- */
.nav-search { position: relative; }
.nav-search input {
  width: 190px; padding: 9px 14px 9px 38px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--surface-2); color: var(--text);
  font-size: 13.5px; outline: none; font-family: inherit; appearance: none; -webkit-appearance: none;
  transition: width 0.25s ease, border-color 0.2s, box-shadow 0.2s, background 0.2s;
}
.nav-search input::placeholder { color: var(--faint); }
.nav-search input:focus {
  width: 250px; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); background: var(--surface);
}
.nav-search .s-ic { position: absolute; left: 13px; top: 50%; transform: translateY(-50%); color: var(--faint); pointer-events: none; }
.zh-search-panel {
  position: absolute; top: calc(100% + 10px); right: 0; width: 390px; max-width: 86vw;
  background: var(--surface); border: 1px solid var(--line-strong); border-radius: var(--r-card);
  box-shadow: var(--shadow-card); z-index: 70; overflow: hidden; padding-bottom: 6px;
}
.zh-search-group {
  padding: 12px 16px 4px; font-size: 12px; color: var(--faint);
  letter-spacing: 0.08em; font-weight: 600;
}
.zh-search-item {
  display: flex; gap: 12px; padding: 10px 16px; cursor: pointer; align-items: flex-start;
}
.zh-search-item:hover, .zh-search-item.sel, .zh-search-item:focus { background: var(--accent-soft); outline: none; }
.zh-search-item .tag {
  flex: none; font-size: 11px; color: var(--accent); border: 1px solid var(--accent-line);
  border-radius: 999px; padding: 1px 9px; margin-top: 2px;
}
.zh-search-item .col { min-width: 0; }
.zh-search-item .t { display: block; font-size: 14px; font-weight: 600; color: var(--text); line-height: 1.45; }
.zh-search-item .t mark { background: transparent; color: var(--accent); padding: 0; }
.zh-search-item .d { display: block; font-size: 12.5px; color: var(--muted); margin-top: 2px; line-height: 1.5; }
.zh-search-empty { padding: 24px 16px 26px; text-align: center; color: var(--muted); font-size: 13.5px; line-height: 1.9; }
.zh-search-empty b { color: var(--text); }
.zh-search-hot { display: flex; flex-wrap: wrap; gap: 8px; padding: 8px 16px 16px; }
.zh-search-hot button {
  padding: 6px 14px; border-radius: 999px; border: 1px solid var(--line);
  background: var(--surface-2); color: var(--muted); font-size: 12.5px; cursor: pointer;
  transition: all 0.2s;
}
.zh-search-hot button:hover { border-color: var(--accent); color: var(--accent); }
.zh-search-foot { border-top: 1px solid var(--line); padding: 10px 16px; }
.zh-search-foot button {
  background: none; border: none; color: var(--accent); font-size: 13px; cursor: pointer; padding: 0;
  font-family: inherit; font-weight: 600;
}
.zh-search-foot button:hover { text-decoration: underline; }

/* 产品页搜索状态条 */
.search-status {
  display: none; align-items: center; gap: 8px;
  background: var(--accent-soft); border: 1px solid var(--accent-line);
  border-radius: 999px; padding: 8px 18px; margin-bottom: 20px; font-size: 13.5px; color: var(--text);
  width: fit-content;
}
.search-status.show { display: inline-flex; }
.search-status b { color: var(--accent); }
.search-status button {
  background: none; border: none; color: var(--muted); cursor: pointer; font-size: 13px;
  padding: 0 2px; font-family: inherit;
}
.search-status button:hover { color: var(--danger); }

@media (max-width: 1020px) {
  .nav-search { margin: 4px 0 10px; }
  .nav-search input, .nav-search input:focus { width: 100%; background: var(--surface); }
  .zh-search-panel {
    position: static; width: 100%; max-width: none; box-shadow: none;
    border: 1px solid var(--line); border-radius: var(--r-input); margin-top: 8px;
  }
}

/* ============================================================
   UI 打磨层：细节质感统一（按钮渐变 / 标题装饰线 / 页脚光带 / 滚动条等）
   ============================================================ */
::selection { background: rgba(10, 108, 196, 0.16); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
html { scrollbar-width: thin; scrollbar-color: rgba(30, 58, 95, 0.3) transparent; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(30, 58, 95, 0.26); border-radius: 999px;
  border: 2px solid transparent; background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover { background-color: rgba(30, 58, 95, 0.42); }

.btn-primary {
  background: linear-gradient(135deg, #0e7ad6 0%, #0a6cc4 100%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18), 0 4px 14px rgba(10, 108, 196, 0.24);
}
.btn-primary:hover {
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 8px 24px rgba(10, 108, 196, 0.34);
}
.btn-ghost:hover { background: var(--accent-soft); }

.sec-title { position: relative; padding-bottom: 16px; }
.sec-title::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 46px; height: 3px; border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), rgba(10, 108, 196, 0.15));
}
.sec-head.center .sec-title::after {
  left: 50%; transform: translateX(-50%);
  background: linear-gradient(90deg, rgba(10, 108, 196, 0.15), var(--accent), rgba(10, 108, 196, 0.15));
}

.stat + .stat { border-left: 1px solid var(--line); }
@media (max-width: 880px) { .stat + .stat { border-left: none; } }

footer { border-top: none; }
footer::before {
  content: ""; display: block; height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent) 28%, var(--accent) 72%, transparent);
  opacity: 0.55;
}

.p-card:hover, .n-card:hover, .f-card:hover { box-shadow: var(--shadow-card); }
.p-card .more { transition: transform 0.2s ease; }
.p-card:hover .more { transform: translateX(3px); }
.info-item { transition: border-color 0.2s, transform 0.2s; }
.info-item:hover { border-color: var(--accent-line); transform: translateY(-2px); }
.brand .mark { box-shadow: 0 4px 10px rgba(10, 108, 196, 0.28); }