/* =========================================================
   中山维智科技有限公司 官网样式
   色彩体系源自品牌 logo 渐变：#19b5c8 → #107796 → #0a3456
   ========================================================= */
:root {
  --cyan: #19b5c8;
  --teal: #107796;
  --navy: #0a3456;
  --navy-deep: #062338;
  --ink: #16283a;
  --muted: #5a6b7b;
  --line: #e3ecf2;
  --bg-soft: #f5f8fa;
  --white: #ffffff;
  --grad-brand: linear-gradient(135deg, #19b5c8 0%, #107796 48%, #0a3456 100%);
  --grad-btn: linear-gradient(135deg, #1cbccb, #107796);
  --shadow-sm: 0 2px 10px rgba(10, 52, 86, .08);
  --shadow-md: 0 12px 32px rgba(10, 52, 86, .14);
  --radius: 16px;
  --header-h: 72px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--teal); text-decoration: none; }
ul { list-style: none; }

.container { width: min(1180px, 92%); margin: 0 auto; }

/* ---------------- 顶部导航 ---------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .3s, border-color .3s;
}
.site-header.scrolled { border-color: var(--line); box-shadow: var(--shadow-sm); }

.header-inner { height: var(--header-h); display: flex; align-items: center; justify-content: space-between; gap: 16px; }

.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand-mark { width: auto; height: 38px; flex: none; object-fit: contain; }
.brand-name {
  font-size: 19px; font-weight: 700; color: var(--navy); white-space: nowrap;
  display: flex; flex-direction: column; line-height: 1.25;
}
.brand-name small { font-size: 10px; font-weight: 600; letter-spacing: .14em; color: var(--muted); }

.site-nav { display: flex; align-items: center; gap: 26px; }
.site-nav > a { color: var(--ink); font-size: 15px; font-weight: 500; position: relative; padding: 6px 0; white-space: nowrap; }
.site-nav > a::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 2px; width: 0;
  background: var(--grad-btn); border-radius: 2px; transition: width .25s;
}
.site-nav > a:hover::after, .site-nav > a.active::after { width: 100%; }
.site-nav > a.active { color: var(--teal); }

.site-nav .lang {
  font-weight: 700; font-size: 13px; color: var(--teal);
  border: 1.5px solid var(--teal); border-radius: 999px; padding: 3px 13px;
}
.site-nav .lang:hover { background: var(--teal); color: #fff; }
.site-nav .lang::after { display: none; }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; width: 40px; height: 40px; position: relative; }
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 8px; width: 24px; height: 2.4px;
  background: var(--navy); border-radius: 2px; transition: .3s;
}
.nav-toggle span { top: 19px; }
.nav-toggle span::before { left: 0; top: -8px; }
.nav-toggle span::after { left: 0; top: 8px; }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 30px; border-radius: 999px; font-size: 15.5px; font-weight: 600;
  cursor: pointer; border: 0; transition: transform .2s, box-shadow .2s, background .2s, color .2s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--grad-btn); color: #fff; box-shadow: 0 8px 20px rgba(16, 119, 150, .35); }
.btn-primary:hover { box-shadow: 0 12px 26px rgba(16, 119, 150, .45); }
.btn-ghost-light { background: transparent; color: #fff; border: 1.5px solid rgba(255, 255, 255, .55); }
.btn-ghost-light:hover { background: rgba(255, 255, 255, .12); }
.btn-ghost-dark { background: transparent; color: var(--teal); border: 1.5px solid var(--teal); }
.btn-ghost-dark:hover { background: rgba(16, 119, 150, .08); }
.btn-sm { padding: 9px 22px; font-size: 14px; }

/* ---------------- Hero 区 ---------------- */
.hero {
  position: relative; overflow: hidden; color: #fff;
  background: linear-gradient(135deg, #0d4166 0%, var(--navy) 45%, var(--navy-deep) 100%);
  padding: 96px 0 110px;
}
.hero::before {
  content: ""; position: absolute; inset: 0; opacity: .5;
  background:
    radial-gradient(720px 340px at 82% 18%, rgba(25, 181, 200, .28), transparent 65%),
    radial-gradient(560px 300px at 8% 88%, rgba(16, 119, 150, .35), transparent 65%);
}
.hero::after {
  content: ""; position: absolute; inset: 0; opacity: .07;
  background-image:
    linear-gradient(rgba(255, 255, 255, .6) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .6) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(720px 480px at 70% 40%, #000 20%, transparent 78%);
}
.hero .container { position: relative; z-index: 2; }
.hero-inner { display: grid; grid-template-columns: 1.08fr .92fr; gap: 56px; align-items: center; }

.hero .eyebrow, .eyebrow {
  display: inline-block; font-size: 13.5px; font-weight: 700; letter-spacing: .22em;
  color: var(--cyan); margin-bottom: 18px;
}
.hero h1 { font-size: clamp(32px, 4.6vw, 52px); line-height: 1.28; letter-spacing: .01em; margin-bottom: 22px; }
.hero h1 .grad {
  background: linear-gradient(100deg, #4ee0ef, #19b5c8 55%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .lead { font-size: 17.5px; color: rgba(255, 255, 255, .82); max-width: 34em; margin-bottom: 34px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-figure { position: relative; }
.hero-figure .fig-card {
  border-radius: 20px; overflow: hidden;
  box-shadow: 0 30px 70px rgba(3, 18, 30, .55), 0 0 0 1px rgba(255, 255, 255, .12);
  transform: rotate(1.2deg);
}
.hero-figure .fig-card img { width: 100%; }
.hero-figure .fig-chip {
  position: absolute; left: -14px; bottom: 26px;
  background: rgba(255, 255, 255, .95); color: var(--navy);
  border-radius: 12px; padding: 10px 16px; font-size: 13.5px; font-weight: 700;
  box-shadow: var(--shadow-md); display: flex; align-items: center; gap: 8px;
}
.hero-figure .fig-chip .dot { width: 9px; height: 9px; border-radius: 50%; background: #23c552; box-shadow: 0 0 0 4px rgba(35, 197, 82, .22); }

/* hero 紧凑版（内页） */
.hero-compact { padding: 72px 0 64px; }
.hero-compact .lead { margin-bottom: 0; }

/* ---------------- 区块通用 ---------------- */
.section { padding: 88px 0; }
.section.soft { background: var(--bg-soft); }
.section.dark {
  background: linear-gradient(150deg, #0d4166, var(--navy) 55%, var(--navy-deep));
  color: #fff; position: relative; overflow: hidden;
}
.section.dark::before {
  content: ""; position: absolute; inset: 0; opacity: .45;
  background: radial-gradient(640px 320px at 88% 10%, rgba(25, 181, 200, .25), transparent 65%);
}
.section.dark .container { position: relative; z-index: 2; }
.section.dark .section-head p { color: rgba(255, 255, 255, .78); }

.section-head { max-width: 720px; margin: 0 auto 52px; text-align: center; }
.section-head h2 { font-size: clamp(26px, 3.2vw, 36px); color: var(--navy); letter-spacing: .01em; margin-bottom: 14px; }
.section.dark .section-head h2 { color: #fff; }
.section-head p { color: var(--muted); font-size: 16.5px; }

/* ---------------- 数据亮点 ---------------- */
.stats { background: var(--grad-brand); color: #fff; padding: 46px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.stat b { display: block; font-size: clamp(30px, 3.6vw, 44px); line-height: 1.15; letter-spacing: .01em; }
.stat b small { font-size: .5em; font-weight: 700; margin-left: 2px; }
.stat span { font-size: 14.5px; opacity: .88; }

/* ---------------- 卡片网格 ---------------- */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 28px; box-shadow: var(--shadow-sm);
  transition: transform .25s, box-shadow .25s;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.card .icon {
  width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(25, 181, 200, .16), rgba(10, 52, 86, .12)); margin-bottom: 18px;
}
.card .icon svg { width: 26px; height: 26px; stroke: var(--teal); fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.card h3 { font-size: 18.5px; color: var(--navy); margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 15px; }
.card .more { display: inline-block; margin-top: 14px; font-weight: 600; font-size: 14.5px; }

/* 产品 spotlight */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split .media { border-radius: 20px; overflow: hidden; box-shadow: 0 26px 60px rgba(3, 18, 30, .5); }
.feature-list li {
  display: flex; gap: 14px; align-items: flex-start; padding: 13px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, .16);
}
.feature-list li:last-child { border-bottom: 0; }
.feature-list .fi {
  flex: none; width: 26px; height: 26px; border-radius: 50%; margin-top: 3px;
  background: rgba(25, 181, 200, .2); display: flex; align-items: center; justify-content: center;
}
.feature-list .fi svg { width: 13px; height: 13px; stroke: var(--cyan); fill: none; stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
.feature-list b { display: block; font-size: 16px; }
.feature-list span { font-size: 14.5px; color: rgba(255, 255, 255, .72); }
.section.soft .feature-list li, .section:not(.dark) .feature-list li { border-bottom-color: var(--line); }
.section:not(.dark) .feature-list .fi { background: rgba(25, 181, 200, .14); }
.section:not(.dark) .feature-list span { color: var(--muted); }

/* ---------------- 优势对比表 ---------------- */
.table-wrap { overflow-x: auto; border-radius: var(--radius); box-shadow: var(--shadow-md); border: 1px solid var(--line); }
table.compare { width: 100%; border-collapse: collapse; background: #fff; min-width: 640px; }
table.compare th, table.compare td { padding: 18px 22px; text-align: left; vertical-align: top; font-size: 15px; }
table.compare thead th { background: var(--navy); color: #fff; font-size: 16px; letter-spacing: .02em; }
table.compare thead th.us { background: var(--teal); }
table.compare td.dim { font-weight: 700; color: var(--navy); white-space: nowrap; width: 8em; }
table.compare td.us { background: rgba(25, 181, 200, .07); }
table.compare tbody tr:nth-child(odd) { background: #fbfdfe; }
table.compare tbody tr:nth-child(odd) td.us { background: rgba(25, 181, 200, .11); }

/* ---------------- 案例卡片 ---------------- */
.case {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px 32px; box-shadow: var(--shadow-sm); display: flex; flex-direction: column;
}
.case .tag {
  align-self: flex-start; font-size: 12.5px; font-weight: 700; color: var(--teal);
  background: rgba(25, 181, 200, .12); border-radius: 999px; padding: 4px 14px; margin-bottom: 14px; letter-spacing: .05em;
}
.case h3 { font-size: 19px; color: var(--navy); margin-bottom: 16px; line-height: 1.45; }
.case .blk { margin-bottom: 13px; font-size: 14.8px; color: var(--muted); }
.case .blk b { color: var(--ink); display: inline; }
.case .blk .lb {
  display: inline-block; font-size: 12.5px; font-weight: 700; color: var(--teal);
  border: 1px solid rgba(16, 119, 150, .35); border-radius: 6px; padding: 0 8px; margin-right: 8px; vertical-align: 1px;
}
.case .result {
  margin-top: auto; background: linear-gradient(135deg, rgba(25, 181, 200, .1), rgba(10, 52, 86, .06));
  border-radius: 12px; padding: 14px 16px; font-size: 14.6px; color: var(--ink);
}
.case .result b { color: var(--teal); }

/* ---------------- 服务保障 ---------------- */
.pledge { text-align: center; }
.pledge .icon { margin: 0 auto 18px; }

/* ---------------- 适用客户 ---------------- */
.aud-chip {
  display: flex; gap: 16px; align-items: flex-start; background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .16); border-radius: 14px; padding: 20px 22px;
}
.aud-chip b { display: block; font-size: 16.5px; margin-bottom: 4px; }
.aud-chip span { font-size: 14px; color: rgba(255, 255, 255, .72); }

/* ---------------- 联系 ---------------- */
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 40px; align-items: start; }
.info-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; display: flex; gap: 18px; align-items: flex-start; box-shadow: var(--shadow-sm); margin-bottom: 18px;
}
.info-card .ic {
  flex: none; width: 50px; height: 50px; border-radius: 13px;
  background: var(--grad-btn); display: flex; align-items: center; justify-content: center;
}
.info-card .ic svg { width: 24px; height: 24px; stroke: #fff; fill: none; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.info-card b { display: block; font-size: 16.5px; color: var(--navy); margin-bottom: 3px; }
.info-card span, .info-card a.val { font-size: 15.5px; color: var(--muted); }
.info-card a.val { font-weight: 600; color: var(--teal); }
.info-card .copy-btn {
  margin-left: auto; flex: none; font-size: 13px; font-weight: 600; color: var(--teal);
  border: 1.5px solid var(--teal); background: none; border-radius: 999px; padding: 4px 14px; cursor: pointer; transition: .2s;
}
.info-card .copy-btn:hover { background: var(--teal); color: #fff; }

.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 36px; box-shadow: var(--shadow-sm); }
.form-card h3 { font-size: 20px; color: var(--navy); margin-bottom: 6px; }
.form-card .tip { color: var(--muted); font-size: 14px; margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 14px; font-weight: 600; color: var(--navy); margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%; border: 1.5px solid var(--line); border-radius: 10px; padding: 12px 14px;
  font-size: 15px; font-family: inherit; color: var(--ink); background: #fbfdfe; outline: none; transition: border-color .2s;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--cyan); background: #fff; }
.field textarea { min-height: 120px; resize: vertical; }
.form-note { font-size: 13px; color: var(--muted); margin-top: 14px; }

/* ---------------- CTA band ---------------- */
.cta-band { background: var(--grad-brand); color: #fff; text-align: center; padding: 72px 0; }
.cta-band h2 { font-size: clamp(24px, 3vw, 34px); margin-bottom: 12px; }
.cta-band p { opacity: .9; margin-bottom: 28px; font-size: 16.5px; }
.cta-band .row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.cta-band .phone-big { display: block; font-size: 22px; font-weight: 800; letter-spacing: .04em; margin-bottom: 20px; }

/* ---------------- 页脚 ---------------- */
.site-footer { background: var(--navy-deep); color: rgba(255, 255, 255, .82); padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1.2fr; gap: 44px; padding-bottom: 44px; }
.site-footer .brand-name { color: #fff; }
.site-footer .brand-name small { color: rgba(255, 255, 255, .55); }
.site-footer p.f-desc { font-size: 14.5px; color: rgba(255, 255, 255, .62); margin-top: 16px; max-width: 30em; }
.site-footer h4 { color: #fff; font-size: 16px; margin-bottom: 18px; letter-spacing: .04em; }
.site-footer ul li { margin-bottom: 10px; font-size: 14.5px; }
.site-footer ul a { color: rgba(255, 255, 255, .72); transition: color .2s; }
.site-footer ul a:hover { color: var(--cyan); }
.site-footer ul .f-label { color: rgba(255, 255, 255, .45); margin-right: 8px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .1); padding: 20px 0; font-size: 13.5px; color: rgba(255, 255, 255, .45); text-align: center; }

/* ---------------- 页面小头部（内页 light hero） ---------------- */
.page-hero {
  background: linear-gradient(135deg, #0d4166, var(--navy) 55%, var(--navy-deep));
  color: #fff; padding: 68px 0 60px; position: relative; overflow: hidden;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0; opacity: .5;
  background: radial-gradient(600px 280px at 85% 20%, rgba(25, 181, 200, .25), transparent 65%);
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero .crumb { font-size: 13.5px; color: rgba(255, 255, 255, .6); margin-bottom: 12px; }
.page-hero .crumb a { color: rgba(255, 255, 255, .75); }
.page-hero h1 { font-size: clamp(28px, 3.6vw, 40px); margin-bottom: 12px; }
.page-hero p { color: rgba(255, 255, 255, .8); max-width: 44em; }

/* ---------------- 通用列表 ---------------- */
.check-list li { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 12px; }
.check-list .fi { flex: none; width: 22px; height: 22px; border-radius: 50%; background: rgba(25, 181, 200, .15); display: flex; align-items: center; justify-content: center; margin-top: 4px; }
.check-list .fi svg { width: 12px; height: 12px; stroke: var(--teal); fill: none; stroke-width: 2.6; stroke-linecap: round; stroke-linejoin: round; }
.check-list b { color: var(--navy); }
.check-list span { color: var(--muted); }

/* ---------------- 滚动显现 ---------------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
/* JS 不可用时直接显示全部内容 */
.no-js .reveal { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------------- 产品中心 ---------------- */
.product-card {
  display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm);
  transition: transform .25s, box-shadow .25s, border-color .25s; position: relative;
  cursor: pointer;
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(25, 181, 200, .45); }
.product-card:focus-visible { outline: 3px solid rgba(25, 181, 200, .55); outline-offset: 2px; }
.product-card .pc-media { position: relative; height: 220px; overflow: hidden; background: var(--navy); }
.product-card .pc-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.product-card:hover .pc-media img { transform: scale(1.04); }
.product-card .pc-media.pc-plain {
  display: flex; align-items: center; justify-content: center;
  background: var(--grad-brand);
}
.product-card .pc-media.pc-plain svg { width: 64px; height: 64px; stroke: rgba(255,255,255,.92); fill: none; stroke-width: 1.4; }
.badge-hot {
  position: absolute; top: 14px; left: 14px; z-index: 2;
  background: linear-gradient(135deg, #ff8a3d, #ff5f2e); color: #fff;
  font-size: 12.5px; font-weight: 700; letter-spacing: .08em;
  padding: 4px 14px; border-radius: 999px; box-shadow: 0 4px 12px rgba(255, 95, 46, .4);
}
.product-card .pc-body { padding: 26px 26px 28px; display: flex; flex-direction: column; flex: 1; }
.product-card h3 { font-size: 20px; color: var(--navy); margin-bottom: 6px; }
.product-card .pc-sub { font-size: 14px; color: var(--cyan); font-weight: 600; letter-spacing: .04em; margin-bottom: 14px; }
.product-card p.pc-desc { color: var(--muted); font-size: 14.8px; margin-bottom: 16px; }
.product-card ul.pc-points { margin-bottom: 20px; }
.product-card ul.pc-points li {
  display: flex; gap: 9px; align-items: flex-start; font-size: 14.3px; color: var(--muted); margin-bottom: 8px;
}
.product-card ul.pc-points li::before {
  content: ""; flex: none; width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); margin-top: 9px;
}
.product-card .pc-actions { margin-top: auto; display: flex; gap: 12px; flex-wrap: wrap; }

.card-ghost {
  border: 2px dashed #c5d5df; background: rgba(245, 248, 250, .6);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: 40px 28px; border-radius: var(--radius); min-height: 320px;
}
.card-ghost .icon {
  width: 60px; height: 60px; border-radius: 16px; display: flex; align-items: center; justify-content: center;
  background: rgba(25, 181, 200, .1); margin-bottom: 18px;
}
.card-ghost .icon svg { width: 30px; height: 30px; stroke: var(--teal); fill: none; stroke-width: 1.6; }
.card-ghost h3 { color: var(--navy); font-size: 18px; margin-bottom: 8px; }
.card-ghost p { color: var(--muted); font-size: 14.5px; max-width: 26em; }

/* ---------------- 对比表 ✓ / ✕ ---------------- */
.sym-ok, .sym-no { font-weight: 800; margin-right: 6px; }
.sym-ok { color: #16a34a; }
.sym-no { color: #d43a3a; }

/* ---------------- 标签 chips ---------------- */
.chips { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.chip {
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  border-radius: 999px; padding: 9px 22px; font-size: 14.5px; font-weight: 600;
  display: inline-flex; align-items: center; gap: 8px; box-shadow: var(--shadow-sm);
}
.chip::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--grad-btn); }
.section.dark .chip { background: rgba(255, 255, 255, .08); border-color: rgba(255, 255, 255, .18); color: #fff; }

/* ---------------- 痛点 ✕ / 方案 ✓ 列表 ---------------- */
.cross-list li, .fix-list li { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 13px; }
.cross-list .fi, .fix-list .fi {
  flex: none; width: 22px; height: 22px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; margin-top: 4px;
}
.cross-list .fi { background: rgba(212, 58, 58, .1); }
.cross-list .fi svg { width: 11px; height: 11px; stroke: #d43a3a; fill: none; stroke-width: 2.6; stroke-linecap: round; }
.fix-list .fi { background: rgba(22, 163, 74, .1); }
.fix-list .fi svg { width: 11px; height: 11px; stroke: #16a34a; fill: none; stroke-width: 2.6; stroke-linecap: round; stroke-linejoin: round; }
.cross-list span, .fix-list span { color: var(--muted); font-size: 15px; }

/* ---------------- 渠道数字卡 ---------------- */
.stat-mini {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; text-align: center; box-shadow: var(--shadow-sm);
}
.stat-mini b { display: block; font-size: 34px; line-height: 1.2; background: var(--grad-btn);
  -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat-mini span { display: block; font-weight: 700; color: var(--navy); font-size: 15.5px; margin: 6px 0 4px; }
.stat-mini p { color: var(--muted); font-size: 13.8px; }

/* ---------------- 部署步骤 ---------------- */
.step-row { counter-reset: step; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.step {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 26px; box-shadow: var(--shadow-sm); position: relative;
}
.step::before {
  counter-increment: step; content: counter(step);
  position: absolute; top: -16px; left: 24px; width: 40px; height: 40px;
  background: var(--grad-btn); color: #fff; font-weight: 800; font-size: 17px;
  border-radius: 12px; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 14px rgba(16, 119, 150, .35);
}
.step h3 { color: var(--navy); font-size: 17px; margin: 10px 0 8px; }
.step p { color: var(--muted); font-size: 14.3px; }

/* ---------------- 应用场景卡（深色区） ---------------- */
.scene-card {
  background: rgba(255, 255, 255, .07); border: 1px solid rgba(255, 255, 255, .15);
  border-radius: var(--radius); padding: 26px 24px; backdrop-filter: blur(4px);
  display: flex; flex-direction: column;
}
.scene-card b { display: block; font-size: 17px; margin-bottom: 8px; color: #fff; }
.scene-card p { font-size: 14px; color: rgba(255, 255, 255, .74); margin-bottom: 12px; }
.scene-card .sc-num {
  margin-top: auto; font-size: 13.5px; font-weight: 700; color: var(--cyan);
  border-top: 1px dashed rgba(255, 255, 255, .18); padding-top: 12px;
}

/* ---------------- 罐车详情页：头图背景 + 软件截图窗框 ---------------- */
.page-hero.img-hero { background-size: cover; background-position: center; }
.shot-frame {
  background: #101c26; border-radius: 14px; overflow: hidden;
  border: 1px solid rgba(10, 52, 86, .18); box-shadow: var(--shadow-md);
}
.shot-frame .bar { display: flex; gap: 6px; padding: 10px 14px; background: #17293a; align-items: center; }
.shot-frame .bar i { width: 10px; height: 10px; border-radius: 50%; background: #ff5f57; flex: none; }
.shot-frame .bar i:nth-child(2) { background: #febc2e; }
.shot-frame .bar i:nth-child(3) { background: #28c840; }
.shot-frame .bar .url { flex: 1; margin-left: 10px; height: 8px; border-radius: 4px; background: #22394e; }
.shot-frame img { width: 100%; display: block; }
.shot-cap { padding: 16px 4px 0; }
.shot-cap b { display: block; color: var(--navy); font-size: 16.5px; margin-bottom: 2px; }
.shot-cap span { color: var(--muted); font-size: 14px; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1024px) {
  .hero-inner { gap: 40px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: absolute; top: var(--header-h); left: 0; right: 0;
    background: #fff; flex-direction: column; align-items: stretch; gap: 0;
    padding: 8px 4%; box-shadow: 0 18px 30px rgba(10, 52, 86, .12);
    border-top: 1px solid var(--line);
    display: none;
  }
  .site-header.nav-open .site-nav { display: flex; }
  .site-nav > a { padding: 14px 4px; border-bottom: 1px solid var(--bg-soft); font-size: 16px; }
  .site-nav > a::after { display: none; }
  .site-nav .lang { align-self: flex-start; margin: 14px 0; padding: 6px 20px; }
  .site-nav .btn { margin: 6px 0 14px; }
  .nav-toggle.nav-open span { background: transparent; }
  .nav-toggle.nav-open span::before { top: 0; transform: rotate(45deg); }
  .nav-toggle.nav-open span::after { top: 0; transform: rotate(-45deg); }

  .hero { padding: 64px 0 76px; }
  .hero-inner, .split, .contact-grid { grid-template-columns: 1fr; }
  .hero-figure { order: -1; max-width: 520px; }
  .hero-figure .fig-chip { left: 8px; }
  .section { padding: 64px 0; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 28px 12px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .form-row { grid-template-columns: 1fr; }
  .step-row { grid-template-columns: 1fr; gap: 30px; }
}

@media (max-width: 520px) {
  .grid-4 { grid-template-columns: 1fr; }
  .brand-mark { height: 30px; }
  .brand-name { font-size: 16px; }
  .brand-name small { letter-spacing: .1em; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}