/* ==========================================================================
   孚瑞智能 FURUI · 官网共享样式
   智能蓝设计系统 · 纯静态无依赖
   ========================================================================== */

:root {
  /* 品牌蓝 */
  --green:        #1e6fd9;
  --green-700:    #1a5cc0;
  --green-800:    #164ea6;
  --deep:         #12407f;
  --forest:       #0b2a55;   /* 深藏蓝: footer / hero 渐变底 */
  --leaf:         #3d8bde;
  --leaf-soft:    #e3eefb;
  --mint:         #edf5fd;

  --accent:       #e09a3e;   /* 暖琥珀: 高亮/告警点缀 */
  --accent-soft:  #fbf3e6;

  --ink:          #17253b;
  --muted:        #5b6b85;
  --line:         #dbe5f0;
  --bg:           #ffffff;
  --bg-soft:      #f4f8fe;

  --radius:       16px;
  --radius-sm:    10px;
  --shadow:       0 10px 30px rgba(11, 35, 71, .08);
  --shadow-lg:    0 18px 50px rgba(11, 35, 71, .14);
  --shadow-glow:  0 12px 40px rgba(30,111,217,.30);

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--green-700); text-decoration: none; }
a:hover { color: var(--deep); }

::selection { background: rgba(30,111,217,.20); }

h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .4em; font-weight: 800; letter-spacing: .01em; }
p { margin: 0 0 1em; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 84px 0; }
.section.tint { background: var(--mint); }
.section.tint-deep { background: var(--bg-soft); }

/* ---------- 通用头部/小标签 ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 700; letter-spacing: .22em; text-transform: uppercase;
  color: var(--green-700); margin-bottom: 14px;
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--accent); }
.eyebrow.center { justify-content: center; }
.eyebrow.center::after { content: ""; width: 26px; height: 2px; background: var(--accent); }

.section-head { max-width: 760px; margin-bottom: 44px; }
.section-head h2 { font-size: clamp(26px, 3.4vw, 38px); color: var(--ink); }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head p { color: var(--muted); font-size: 16.5px; margin-bottom: 0; }
.section-head .lead { color: var(--muted); }

.lead { font-size: 17px; color: var(--muted); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 26px; border-radius: 999px; font-weight: 700; font-size: 15.5px;
  border: 1.5px solid transparent; cursor: pointer; transition: .22s;
  white-space: nowrap; line-height: 1.2;
}
.btn svg { width: 16px; height: 16px; }
.btn-primary { background: var(--green); color: #fff; box-shadow: 0 6px 18px rgba(30,111,217,.30); }
.btn-primary:hover { background: var(--green-800); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow-glow); }
.btn-light { background: #fff; color: var(--deep); }
.btn-light:hover { background: var(--leaf-soft); color: var(--deep); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--green-700); border-color: var(--green); }
.btn-ghost:hover { background: var(--leaf-soft); color: var(--deep); }
.btn-lg { padding: 15px 34px; font-size: 16.5px; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.86); backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between; height: 70px;
}
.brand { display: inline-flex; align-items: center; gap: 11px; }
.brand-mark {
  width: 45px; height: 45px; border-radius: 12px; flex: 0 0 auto;
  background: linear-gradient(135deg, var(--green), var(--deep));
  display: grid; place-items: center; color: #fff; box-shadow: 0 6px 14px rgba(18,64,127,.30);
}
.brand-mark svg { width: 24px; height: 24px; }
.brand-text { line-height: 1.15; }
.brand-cn { font-weight: 800; font-size: 17px; color: var(--ink); letter-spacing: 0.12em; }
.brand-en { font-size: 11px; letter-spacing: 0.05em; color: var(--muted); text-transform: uppercase; }

.nav-menu { display: flex; align-items: center; gap: 6px; }
.nav-link {
  position: relative; padding: 10px 14px; color: var(--ink); font-weight: 600; font-size: 15.5px;
  border-radius: 8px; transition: .18s;
}
.nav-link:hover { color: var(--green-700); background: var(--mint); }
.nav-link.active { color: var(--green-800); }
.nav-link.active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 3px; height: 2px;
  background: var(--green); border-radius: 2px;
}
.nav-cta { margin-left: 10px; }

/* 下拉 */
.has-drop { position: relative; }
.drop {
  position: absolute; top: calc(100% + 8px); left: 50%; transform: translateX(-50%) translateY(6px);
  min-width: 252px; background: #fff; border: 1px solid var(--line); border-radius: 14px;
  box-shadow: var(--shadow-lg); padding: 8px; opacity: 0; visibility: hidden; transition: .2s;
}
.has-drop:hover .drop, .has-drop:focus-within .drop { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.drop a {
  display: flex; flex-direction: column; gap: 1px; padding: 10px 14px; border-radius: 9px;
  color: var(--ink); transition: .15s;
}
.drop a:hover { background: var(--mint); color: var(--deep); }
.drop .d-t { font-weight: 700; font-size: 14.5px; }
.drop .d-s { font-size: 12px; color: var(--muted); }

.caret { width: 8px; height: 8px; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor; transform: rotate(45deg); display: inline-block; margin-left: 6px; }

.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; border-radius: 2px; transition: .2s; }

/* ---------- 面包屑 ---------- */
.breadcrumb { font-size: 13.5px; color: rgba(255,255,255,.78); display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-bottom: 14px; }
.breadcrumb a { color: rgba(255,255,255,.9); }
.breadcrumb a:hover { color: #fff; text-decoration: underline; }
.breadcrumb .sep { opacity: .6; }

/* ---------- 页头 Hero（内页通用） ---------- */
.page-hero {
  position: relative; overflow: hidden; color: #fff;
  background:
    radial-gradient(900px 500px at 85% -10%, rgba(224,154,62,.28), transparent 60%),
    linear-gradient(140deg, var(--forest) 0%, var(--green-800) 55%, var(--green) 100%);
  padding: 74px 0 92px;
}
.page-hero::before, .page-hero::after {
  content: ""; position: absolute; border-radius: 50%; pointer-events: none;
}
.page-hero::before { width: 480px; height: 480px; right: -120px; top: -160px; background: radial-gradient(circle, rgba(255,255,255,.10), transparent 62%); }
.page-hero::after  { width: 360px; height: 360px; left: -140px; bottom: -200px; background: radial-gradient(circle, rgba(255,255,255,.06), transparent 60%); }
.page-hero .container { position: relative; z-index: 2; }

.hero-title { font-size: clamp(30px, 5vw, 52px); font-weight: 900; margin: 6px 0 14px; }
.hero-sub { font-size: clamp(16px, 2.2vw, 19px); color: rgba(255,255,255,.9); max-width: 720px; }
.hero-kicker { display:inline-block; font-size: 12.5px; letter-spacing: .24em; text-transform: uppercase; color: #ffe7c2; font-weight: 700; margin-bottom: 6px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }

/* Hero split 带右图 */
.hero-split { display: grid; grid-template-columns: 1.1fr .9fr; gap: 44px; align-items: center; }
.hero-media { position: relative; z-index: 2; }
.hero-media img {
  width: 100%; max-width: 460px; margin-left: auto; border-radius: 22px;
  box-shadow: 0 30px 70px rgba(0,0,0,.32); border: 1px solid rgba(255,255,255,.18);
}
.hero-badges { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.chip {
  display: inline-flex; align-items: center; gap: 7px;
  background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.28);
  padding: 7px 14px; border-radius: 999px; font-size: 13.5px; color: #fff; backdrop-filter: blur(4px);
}
.chip svg { width: 14px; height: 14px; }

/* ---------- 产品卡片 ---------- */
.prod-grid { display: grid; gap: 26px; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.prod-card {
  position: relative; display: flex; flex-direction: column;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: .25s; box-shadow: 0 4px 14px rgba(11,35,71,.05);
}
.prod-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: #c4dcf2; }
.prod-card .pc-media { aspect-ratio: 4/3; background: var(--mint); overflow: hidden; position: relative; }
.prod-card .pc-media img { width: 100%; height: 100%; object-fit: cover; transition: .4s; }
.prod-card:hover .pc-media img { transform: scale(1.045); }
.prod-card .pc-media .tag {
  position: absolute; top: 12px; left: 12px; z-index: 2;
  background: var(--accent); color: #4a3000; font-size: 12px; font-weight: 800;
  padding: 4px 11px; border-radius: 999px; box-shadow: 0 4px 10px rgba(0,0,0,.15);
}
.prod-card .tag.tag-gray { background: rgba(255,255,255,.92); color: var(--muted); }
.prod-card .pc-body { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.prod-card h3 { font-size: 20px; margin-bottom: 6px; }
.prod-card h3 a { color: var(--ink); }
.prod-card h3 a:hover { color: var(--green-700); }
.prod-card .pc-en { font-size: 12px; letter-spacing: .14em; color: var(--muted); text-transform: uppercase; margin-bottom: 8px; }
.prod-card p { color: var(--muted); font-size: 14.5px; flex: 1; margin-bottom: 14px; }
.pc-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.pc-meta span { font-size: 12.5px; color: var(--green-800); background: var(--leaf-soft); padding: 3px 10px; border-radius: 999px; }
.prod-card .go { font-weight: 800; font-size: 15px; color: var(--green-700); display: inline-flex; align-items: center; gap: 6px; }
.prod-card .go::after { content: "→"; transition: .2s; }
.prod-card:hover .go::after { transform: translateX(3px); }

/* ---------- 特性卡片 ---------- */
.feat-grid { display: grid; gap: 22px; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }
.feat {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 24px; transition: .22s;
}
.feat:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.feat .f-ico {
  width: 50px; height: 50px; border-radius: 13px; margin-bottom: 16px;
  background: linear-gradient(135deg, var(--leaf-soft), var(--mint));
  color: var(--green-800); display: grid; place-items: center;
}
.feat .f-ico svg { width: 25px; height: 25px; }
.feat h3 { font-size: 17.5px; margin-bottom: 8px; }
.feat p { color: var(--muted); font-size: 14.5px; margin: 0; }

/* ---------- 数据/统计 ---------- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px,1fr)); gap: 18px; }
.stat {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 20px; text-align: center;
}
.stat b { display: block; font-size: clamp(30px, 4vw, 44px); font-weight: 900; color: var(--deep); line-height: 1.1; }
.stat b i { font-style: normal; font-size: .55em; color: var(--green-700); margin-left: 2px; }
.stat span { font-size: 14px; color: var(--muted); }
.stat .note { font-size: 12px; color: #93a29a; margin-top: 4px; line-height: 1.5; }

/* 深色块上的数据 */
.on-dark .stat { background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.16); }
.on-dark .stat b { color: #fff; }
.on-dark .stat span { color: rgba(255,255,255,.78); }
.on-dark .stat .note { color: rgba(255,255,255,.5); }

/* ---------- 步骤 ---------- */
.steps { counter-reset: st; display: grid; grid-template-columns: repeat(auto-fit, minmax(200px,1fr)); gap: 18px; }
.step { position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 22px 22px; }
.step::before {
  counter-increment: st; content: counter(st, decimal-leading-zero);
  font-family: var(--mono); font-size: 15px; font-weight: 800; color: #fff;
  background: linear-gradient(135deg, var(--green), var(--deep));
  width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; margin-bottom: 14px;
}
.step h4 { font-size: 17px; margin-bottom: 6px; }
.step p { font-size: 14px; color: var(--muted); margin: 0; }
.step .s-tag { position:absolute; top:18px; right:18px; font-size: 11px; font-weight:700; color:#93a29a; letter-spacing:.08em; text-transform: uppercase; }

/* ---------- 双栏图文 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 52px; align-items: center; }
.split .media { position: relative; }
.split .media img { border-radius: var(--radius); box-shadow: var(--shadow-lg); width: 100%; }
.split .media.round img { border-radius: 22px; }
.split-list { margin: 0; padding: 0; list-style: none; display: grid; gap: 16px; }
.split-list li { display: flex; gap: 12px; align-items: flex-start; }
.split-list .li-ico { flex: 0 0 auto; width: 26px; height: 26px; margin-top: 3px; color: var(--green); }
.split-list .li-ico svg { width: 26px; height: 26px; }
.split-list b { display: block; font-size: 16px; }
.split-list p { margin: 2px 0 0; color: var(--muted); font-size: 14.5px; }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); }
table.spec { width: 100%; border-collapse: collapse; min-width: 620px; }
table.spec th, table.spec td { text-align: left; padding: 14px 18px; border-bottom: 1px solid var(--line); font-size: 14.5px; vertical-align: top; }
table.spec tr:last-child th, table.spec tr:last-child td { border-bottom: 0; }
table.spec th { background: var(--mint); color: var(--deep); font-weight: 800; width: 200px; white-space: nowrap; }
table.spec td { color: var(--ink); }
table.spec tr:hover td { background: #fbfdfb; }

table.cmp { width: 100%; border-collapse: separate; border-spacing: 0; min-width: 720px; }
table.cmp th, table.cmp td { padding: 14px 16px; border-bottom: 1px solid var(--line); text-align: left; font-size: 14.5px; }
table.cmp thead th { background: var(--deep); color: #fff; font-weight: 800; }
table.cmp thead th:first-child { border-radius: 12px 0 0 0; }
table.cmp thead th:last-child { border-radius: 0 12px 0 0; }
table.cmp tbody th { background: var(--mint); color: var(--deep); font-weight: 700; text-align: left; }
table.cmp td.c { text-align: center; }
table.cmp tr:last-child td { border-bottom: 0; }
table.cmp .tick { color: var(--green); font-weight: 900; }
table.cmp .cross { color: #c0392b; }
table.cmp .mid { color: var(--accent); }
.flag-line { color: var(--muted); }

/* ---------- 产品详情内嵌 photo 画廊 ---------- */
.gallery { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: 18px; }
.gallery figure { margin: 0; background:#fff; border:1px solid var(--line); border-radius: var(--radius); overflow:hidden; }
.gallery img { width:100%; aspect-ratio:4/5; object-fit: cover; }
.gallery figcaption { padding: 10px 14px; font-size: 13.5px; color: var(--muted); text-align:center; }

/* ---------- 电话 mock ---------- */
.phone-grid { display: grid; gap: 26px; grid-template-columns: repeat(auto-fit, minmax(210px,1fr)); }
.phone { text-align: center; }
.phone .ph-frame {
  max-width: 236px; margin: 0 auto; border-radius: 26px; overflow: hidden;
  border: 6px solid #081c38; background: #081c38; box-shadow: var(--shadow-lg);
}
.phone .ph-frame img { width: 100%; aspect-ratio: 518/1120; object-fit: cover; object-position: top; }
.phone h4 { margin: 14px 0 2px; font-size: 16px; }
.phone p { font-size: 13px; color: var(--muted); margin: 0; }

/* ---------- 大 CTA ---------- */
.cta-strip {
  position: relative; overflow: hidden; border-radius: 22px; color: #fff; text-align: center;
  background: linear-gradient(130deg, var(--deep), var(--green) 70%, var(--leaf));
  padding: 60px 30px; box-shadow: var(--shadow-lg);
}
.cta-strip::before { content:""; position:absolute; inset:0; background: radial-gradient(600px 300px at 85% -20%, rgba(224,154,62,.3), transparent 60%); }
.cta-strip > * { position: relative; z-index: 1; }
.cta-strip h2 { font-size: clamp(24px,3.4vw,34px); }
.cta-strip p { color: rgba(255,255,255,.85); max-width: 620px; margin: 6px auto 24px; }
.cta-strip .hero-actions { justify-content: center; }
.cta-strip .ghost-on { background: transparent; color:#fff; border-color: rgba(255,255,255,.7); }
.cta-strip .ghost-on:hover { background: rgba(255,255,255,.14); color:#fff; }

/* ---------- 侧边说明/提示 ---------- */
.note-box { border-left: 4px solid var(--accent); background: var(--accent-soft); padding: 14px 18px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; font-size: 14px; color:#6b4a14; }
.note-box.info { border-color: var(--leaf); background: var(--leaf-soft); color: var(--green-800); }
.caption { font-size: 12.5px; color: #93a29a; text-align: center; margin-top: 10px; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--forest); color: rgba(255,255,255,.82); margin-top: 0; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding: 60px 0 44px; }
.foot-grid h4 { color: #fff; font-size: 15.5px; margin-bottom: 16px; letter-spacing:.05em; }
.foot-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.foot-grid a { color: rgba(255,255,255,.78); font-size: 14px; }
.foot-grid a:hover { color: #fff; }
.foot-brand p { font-size: 14px; color: rgba(255,255,255,.7); margin: 14px 0 0; max-width: 300px; }
.foot-brand .brand-cn { color: #fff; }
.foot-brand .brand-en { color: rgba(255,255,255,.5); }
.contact-line { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 12px; font-size: 14px; color: rgba(255,255,255,.82); }
.contact-line svg { width: 17px; height: 17px; flex: 0 0 auto; margin-top: 3px; color: #ffd9a0; }
.foot-bottom { border-top: 1px solid rgba(255,255,255,.12); padding: 20px 0; font-size: 13px; color: rgba(255,255,255,.55); display:flex; flex-wrap:wrap; gap: 8px 22px; justify-content: space-between; }
.foot-bottom a { color: #f4f8fe; text-decoration: none; }
.foot-bottom a:hover { color: #f4f8fe; }

/* ---------- 显示动画（仅在启用 JS 时隐藏初始态，保证 SEO/无 JS 可见） ---------- */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal, .js .reveal.in { opacity: 1; transform: none; transition: none; }
  * { animation: none !important; }
}

/* ---------- 深色数据带 ---------- */
.stats-band {
  position: relative; overflow: hidden; border-radius: 22px; color: #fff;
  background: linear-gradient(120deg, #0b2347 0%, #12407f 55%, #1e6fd9 100%);
  padding: 48px 26px 40px; box-shadow: var(--shadow-lg);
}
.stats-band::before { content:""; position:absolute; inset:0; background: radial-gradient(600px 320px at 90% -30%, rgba(224,154,62,.25), transparent 60%); }
.stats-band .container-st { position: relative; }
.stats-band h3, .stats-band .sb-head { position: relative; text-align:center; color:#fff; margin:0 auto 30px; }
.stats-band h3 { font-size: clamp(22px,3vw,30px); }
.stats-band .sb-sub { position: relative; text-align:center; color: rgba(255,255,255,.8); margin: -20px auto 30px; font-size: 14.5px; }

/* ---------- 版块入口大卡 ---------- */
.gate-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.gate {
  position: relative; overflow: hidden; border-radius: 22px; color: #fff; padding: 40px 38px;
  min-height: 320px; display: flex; flex-direction: column; justify-content: flex-end;
  transition: .3s; box-shadow: var(--shadow-lg);
}
.gate:hover { transform: translateY(-6px); }
.gate.pasture { background: linear-gradient(140deg,#0b2347,#1a5cc0 70%,#3d8bde); }
.gate.ai { background: linear-gradient(140deg,#0c2a4e,#1e6fd9 60%,#4d9aea); }
.gate h3 { font-size: 27px; }
.gate p { color: rgba(255,255,255,.85); margin: 4px 0 16px; }
.gate .go-link { display:inline-flex; gap:8px; align-items:center; font-weight:800; color:#fff; background:rgba(255,255,255,.16); padding:9px 18px; border-radius:999px; align-self:flex-start; font-size:14.5px; border:1px solid rgba(255,255,255,.28); }
.gate .go-link:hover { background: rgba(255,255,255,.26); }
.gate .gate-ico { position:absolute; right: -14px; top: -18px; opacity:.16; color:#fff; }
.gate .gate-ico svg { width: 180px; height: 180px; }

/* ---------- 关于页 / 联系 ---------- */
.info-grid { display:grid; grid-template-columns: repeat(auto-fit,minmax(260px,1fr)); gap: 18px; }
.info-card { background:#fff; border:1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.info-card h3 { font-size: 16.5px; margin-bottom: 8px; display:flex; gap:10px; align-items:center; }
.info-card .ic svg { width: 22px; height:22px; color: var(--green); }

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .hero-split { grid-template-columns: 1fr; gap: 30px; }
  .hero-media img { margin: 0 auto; max-width: 380px; }
  .split { grid-template-columns: 1fr; gap: 30px; }
  .gate-grid { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .nav-toggle { display: block; }
  .nav-menu {
    position: absolute; left: 0; right: 0; top: 70px; flex-direction: column; align-items: stretch;
    background: #fff; border-bottom: 1px solid var(--line); box-shadow: var(--shadow-lg);
    padding: 14px 20px 22px; gap: 4px; display: none;
  }
  .nav-menu.open { display: flex; }
  .nav-link.active::after { display:none; }
  .nav-cta { margin: 8px 0 0; text-align:center; }
  .has-drop { position: static; }
  /* 移动端：二级菜单随主菜单直接展开（不依赖点击切换），父项点击仍正常跳转 */
  .drop { position: static; transform: none; opacity: 1; visibility: visible; display: block; box-shadow:none; border:0; background: var(--bg-soft); margin: 2px 0 8px 10px; padding: 4px 2px 4px 14px; min-width:0; border-left: 2px solid var(--line); }
  .caret { display:none; }
  .nav-menu > .has-drop > .nav-link { display:flex; justify-content:space-between; width:100%; }
}
@media (max-width: 620px) {
  .section { padding: 60px 0; }
  .container { padding: 0 18px; }
  .foot-grid { grid-template-columns: 1fr; gap: 26px; padding: 46px 0 30px; }
  .prod-grid, .feat-grid { grid-template-columns: 1fr; }
  table.cmp { font-size: 13.5px; }
}


/* ---------- Logo 图片（蓝色牛头标） ---------- */
.brand-logo {
  width: 50px; height: 50px; flex: 0 0 auto; object-fit: contain;
  border-radius: 10px; background: #fff; padding: 3px;
  border: 1px solid #eef2f7; box-shadow: 0 3px 10px rgba(11,35,71,.12);
}
@media (max-width: 420px){ .brand-logo { width:50px; height:50px; } }

/* ---------- 移动端优化 ---------- */
@media (max-width: 620px) {
  .page-hero { padding: 48px 0 66px; }
  .page-hero .btn-lg { padding: 13px 22px; font-size:15px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
  .hero-media img { max-width: 320px; }
  .phone .ph-frame { max-width: 210px; }
  .stat b { font-size: 30px; }
  .foot-bottom { flex-direction: column; gap: 6px; }
  .nav-menu a, .nav-menu .nav-link { font-size: 15px; }
}
@media (max-width: 380px) {
  .hero-actions { gap: 10px; }
  h1 { letter-spacing: 0; }
}