/* ==========================================================================
   户对 HUDUI · 门厂配套官网（新站 6 板块）
   自研样式系统 · 无外链依赖 · 图标内联 SVG
   设计原则：信息优先、克制、手机端可用
   ========================================================================== */

:root{
  /* 品牌主色：科技蓝 */
  --brand:#1668e3;
  --brand-d:#0b47a8;
  --brand-l:#4b95ff;
  --cyan:#39cbff;
  /* 深色底 */
  --navy-900:#03142a;
  --navy-800:#061e3b;
  --navy-700:#0a2c53;
  /* 浅色底与文字 */
  --bg:#ffffff;
  --bg-soft:#f5f8fc;
  --bg-soft2:#eaf2fb;
  --ink:#0b1c30;
  --ink-2:#3f5570;
  --ink-3:#7a8da5;
  --line:#e3ecf6;
  --line-2:#d3e1f1;
  /* 尺寸 */
  --wrap:1200px;
  --r-lg:18px;
  --r-md:12px;
  --r-sm:9px;
  --shadow-1:0 2px 10px rgba(11,28,48,.05);
  --shadow-2:0 14px 34px -20px rgba(11,28,48,.26);
  --shadow-3:0 24px 54px -26px rgba(11,28,48,.36);
  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:68px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.8;color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
::selection{background:rgba(22,104,227,.18)}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.wrap-narrow{max-width:980px}

/* ---------- 通用文字 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;font-weight:600;
  color:var(--brand);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,var(--brand),var(--cyan));border-radius:2px}
.h1{font-size:clamp(30px,4.2vw,52px);line-height:1.22;font-weight:800;letter-spacing:-.01em}
.h2{font-size:clamp(23px,2.7vw,34px);line-height:1.32;font-weight:800;letter-spacing:-.01em}
.h3{font-size:19px;line-height:1.5;font-weight:700}
.lead{font-size:17px;color:var(--ink-2);line-height:1.9}
.muted{color:var(--ink-3);font-size:14px}
.center{text-align:center}
.accent{color:var(--brand)}
.small{font-size:14px;line-height:1.75}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:50px;padding:0 28px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;transition:all .24s var(--ease);white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 22px -12px rgba(22,104,227,.7)}
.btn-primary:hover{background:var(--brand-d);transform:translateY(-1px)}
.btn-ghost{border-color:var(--line-2);color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-line{border-color:rgba(255,255,255,.4);color:#fff}
.btn-line:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn svg{width:18px;height:18px;flex:none}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

.tel-link{color:inherit;font-weight:700;letter-spacing:.01em}

/* ---------- 顶栏 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  height:var(--header-h);
  display:flex;align-items:center;
  background:rgba(255,255,255,.86);
  backdrop-filter:saturate(1.6) blur(12px);
  -webkit-backdrop-filter:saturate(1.6) blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease),background .3s var(--ease);
}
.site-header.solid{border-bottom-color:var(--line);box-shadow:0 6px 20px -18px rgba(11,28,48,.5)}
.header-in{display:flex;align-items:center;gap:20px;width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.logo{display:flex;align-items:center;gap:11px;flex:none}
.logo-mark{width:100px;height:auto;aspect-ratio:265/46;flex:none;display:block}
.logo-txt{display:flex;flex-direction:column;line-height:1.2}
.logo-txt b{font-size:17px;font-weight:800;letter-spacing:.02em}
.logo-txt span{font-size:11px;color:var(--ink-3);letter-spacing:.16em}
.nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav a{
  position:relative;padding:9px 13px;border-radius:8px;
  font-size:15px;color:var(--ink-2);font-weight:500;transition:all .2s var(--ease);
}
.nav a:hover{color:var(--brand);background:var(--bg-soft)}
.nav a.on{color:var(--brand);font-weight:700}
.nav a.on::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--cyan));
}
.header-tel{
  display:inline-flex;align-items:center;gap:8px;flex:none;
  height:38px;padding:0 16px;border-radius:999px;
  background:var(--brand);color:#fff;font-size:14px;font-weight:700;
  box-shadow:0 6px 16px -10px rgba(22,104,227,.9);
}
.header-tel svg{width:15px;height:15px}
.burger{display:none;margin-left:auto;width:42px;height:42px;border-radius:10px;align-items:center;justify-content:center;border:1px solid var(--line-2)}
.burger i{display:block;width:19px;height:2px;background:var(--ink);position:relative;transition:all .25s var(--ease)}
.burger i::before,.burger i::after{content:"";position:absolute;left:0;width:19px;height:2px;background:var(--ink);transition:all .25s var(--ease)}
.burger i::before{top:-6px}
.burger i::after{top:6px}
.burger.on i{background:transparent}
.burger.on i::before{top:0;transform:rotate(45deg)}
.burger.on i::after{top:0;transform:rotate(-45deg)}

.mobile-nav{
  position:fixed;top:var(--header-h);left:0;right:0;z-index:79;
  background:#fff;border-bottom:1px solid var(--line);
  box-shadow:0 20px 40px -30px rgba(11,28,48,.6);
  display:none;padding:10px 0 18px;
  max-height:calc(100vh - var(--header-h));overflow-y:auto;
}
.mobile-nav.on{display:block}
.mobile-nav a{display:block;padding:13px 24px;font-size:16px;font-weight:600;border-bottom:1px solid var(--line)}
.mobile-nav a:last-child{border-bottom:0}
.mobile-nav .mn-tel{margin:14px 24px 0}

/* ---------- 首屏 ---------- */
.hero{
  padding:calc(var(--header-h) + 38px) 0 46px;
  background:
    radial-gradient(900px 420px at 88% 4%,rgba(22,104,227,.09),transparent 62%),
    linear-gradient(180deg,#fff,var(--bg-soft));
  border-bottom:1px solid var(--line);
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:10px;flex-wrap:wrap;
  padding:7px 15px;border-radius:999px;background:#fff;border:1px solid var(--line-2);
  font-size:13px;color:var(--ink-2);box-shadow:var(--shadow-1);margin-bottom:22px;
}
.hero-badge b{color:var(--ink);font-weight:700}
.hero-badge i{width:1px;height:13px;background:var(--line-2);display:inline-block}
.hero h1{margin-bottom:20px}
.hero-sub{font-size:17px;color:var(--ink-2);line-height:1.9;max-width:34em;margin-bottom:30px}
.hero-note{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px}
.hero-note span{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 13px;border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:13px;color:var(--ink-2);
}
.hero-note svg{width:14px;height:14px;color:var(--brand);flex:none}
/* 两行说明胶囊（孔位不改、产线不改，配套无线系统） */
.hero-note .note-2l{align-items:flex-start;border-radius:16px;padding:7px 15px 7px 13px;line-height:1.62}
.hero-note .note-2l svg{margin-top:4px}
.hero-note .note-2l em{font-style:normal}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;border-radius:var(--r-lg);
  box-shadow:var(--shadow-3);background:#fff;
}
.hero-visual .figcap{
  position:absolute;left:14px;bottom:14px;
  padding:7px 14px;border-radius:999px;
  background:rgba(3,20,42,.78);color:#fff;font-size:12.5px;letter-spacing:.02em;
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
}

/* 首页数据条 */
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  margin-top:38px;border:1px solid var(--line);border-radius:var(--r-lg);
  background:#fff;overflow:hidden;box-shadow:var(--shadow-1);
}
.hero-stats > div{padding:20px 18px;text-align:center;border-right:1px solid var(--line)}
.hero-stats > div:last-child{border-right:0}
.hero-stats .v{font-size:26px;font-weight:800;line-height:1.25;letter-spacing:-.01em}
.hero-stats .v small{font-size:14px;font-weight:700;margin-left:2px}
.hero-stats .k{font-size:13px;color:var(--ink-3);margin-top:4px}

/* ---------- 区块 ---------- */
.section{padding:76px 0}
.section.soft{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section.tight{padding:52px 0}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-head.center{margin-left:auto;margin-right:auto}
.sec-head .h2{margin:14px 0 14px}
.sec-head p{font-size:16.5px;color:var(--ink-2)}

/* 页头（内页） */
.page-hero{
  padding:calc(var(--header-h) + 48px) 0 46px;
  background:linear-gradient(180deg,var(--navy-800),var(--navy-700));
  color:#fff;
}
.page-hero .h1{font-size:clamp(26px,3.4vw,42px)}
.page-hero p{color:rgba(255,255,255,.8);margin-top:14px;font-size:16.5px;max-width:44em}
.crumb{font-size:13px;color:rgba(255,255,255,.62);margin-bottom:16px}
.crumb a{color:rgba(255,255,255,.72)}
.crumb a:hover{color:#fff}
.crumb span{margin:0 7px;opacity:.55}
.chips{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px}
.chips span{
  padding:6px 14px;border-radius:999px;font-size:13.5px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:#fff;
}

/* ---------- 卡片 ---------- */
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;transition:all .26s var(--ease);
}
.card:hover{border-color:var(--line-2);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.card h3{margin-bottom:10px}
.card p{color:var(--ink-2);font-size:15px}
.card .ico{
  width:44px;height:44px;border-radius:12px;margin-bottom:16px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(22,104,227,.12),rgba(57,203,255,.16));
  color:var(--brand);
}
.card .ico svg{width:22px;height:22px}

/* 痛点卡 */
.pain{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.pain-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px 26px;
  border-top:3px solid var(--brand);
}
.pain-item .no{
  font-size:13px;font-weight:800;color:var(--brand);letter-spacing:.1em;margin-bottom:10px;
}
.pain-item h3{margin-bottom:10px}
.pain-item p{color:var(--ink-2);font-size:15px}

/* 做法三步 */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:s}
.step{position:relative;padding:30px 26px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg)}
.step .n{
  width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:var(--brand);color:#fff;font-weight:800;font-size:16px;margin-bottom:16px;
}
.step h3{margin-bottom:9px}
.step p{color:var(--ink-2);font-size:15px}

/* ---------- 信任证据带 ---------- */
.evid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
}
.evid > div{background:#fff;padding:26px 20px;text-align:center}
.evid .v{font-size:28px;font-weight:800;letter-spacing:-.01em;line-height:1.25}
.evid .v.v-years{font-size:clamp(18px,1.85vw,25px);letter-spacing:0;white-space:nowrap}
.evid .v small{font-size:15px;margin-left:2px}
.evid .k{font-size:13.5px;color:var(--ink-3);margin-top:5px}

/* ---------- 产品 ---------- */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.prod-grid.two{grid-template-columns:repeat(2,1fr)}
.prod{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;display:flex;flex-direction:column;transition:all .26s var(--ease);
}
.prod:hover{border-color:var(--line-2);box-shadow:var(--shadow-2);transform:translateY(-3px)}
.prod-thumb{
  background:linear-gradient(180deg,#fff,var(--bg-soft));
  border-bottom:1px solid var(--line);padding:18px;
  display:flex;align-items:center;justify-content:center;min-height:230px;
}
.prod-thumb img{max-height:300px;width:auto;object-fit:contain}
.prod-thumb.dual{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:14px}
.prod-thumb.dual img{max-height:280px;width:100%;object-fit:contain}
.prod-thumb.dual figcaption{font-size:12px;color:var(--ink-3);text-align:center;margin-top:6px}
.prod-thumb.zoomable img{cursor:zoom-in}
/* 关于我们图文区：图片铺满整卡（无白边、圆角、轻投影） */
.prod-thumb.card-fill{
  display:block;min-height:0;padding:0;overflow:hidden;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-2);
}
.prod-thumb.card-fill img{width:100%;height:100%;max-height:none;object-fit:cover;border-radius:0}
.prod-thumb.card-fill.sq{aspect-ratio:1/1}
.prod-thumb.card-fill.wide{aspect-ratio:3/2}

/* 桌面端：四张卡的图区等高，卡片里的小标签与参数表起始线对齐全（窄屏不生效） */
@media (min-width:1101px){
  .prod-grid .prod-thumb{height:340px}
  .prod-grid .prod-thumb img{max-height:100%}
  .prod-grid .prod-thumb.dual{align-content:center}
}
.prod-body{padding:22px;flex:1;display:flex;flex-direction:column}
.prod-body .tag{
  align-self:flex-start;padding:4px 11px;border-radius:999px;font-size:12px;font-weight:700;
  background:rgba(22,104,227,.1);color:var(--brand);margin-bottom:12px;
}
.prod-body h3{margin-bottom:9px}
.prod-body h3 .m{font-weight:800}
.prod-body > p{color:var(--ink-2);font-size:14.5px;margin-bottom:14px}
.spec{display:grid;gap:7px;margin-top:auto;padding-top:14px;border-top:1px dashed var(--line-2)}
.spec div{display:flex;gap:10px;font-size:13.5px;align-items:baseline}
.spec dt{color:var(--ink-3);flex:none;min-width:74px}
.spec dd{margin:0;color:var(--ink);font-weight:600}

/* 配套件 · 实物卡 */
.part-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.part-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;display:flex;flex-direction:column;transition:all .26s var(--ease);
}
.part-card:hover{border-color:var(--line-2);box-shadow:var(--shadow-2);transform:translateY(-3px)}
.part-media{
  position:relative;height:246px;padding:26px;
  display:flex;align-items:center;justify-content:center;
  background:
    radial-gradient(120% 92% at 74% 10%,rgba(22,104,227,.12),rgba(22,104,227,0) 62%),
    linear-gradient(180deg,#ffffff,#eef3fb);
  border-bottom:1px solid var(--line);
}
.part-media img{
  max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;
  filter:drop-shadow(0 12px 18px rgba(13,36,70,.17));
}
.part-body{padding:20px 22px 22px;flex:1;display:flex;flex-direction:column}
.part-body .part-tag{
  align-self:flex-start;padding:4px 11px;border-radius:999px;font-size:12px;font-weight:700;
  background:rgba(22,104,227,.1);color:var(--brand);margin-bottom:11px;
}
.part-body .h3{margin-bottom:9px}
.part-body p{color:var(--ink-2);font-size:14.5px}

/* 参数表 */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-lg);background:#fff;-webkit-overflow-scrolling:touch}
table.tbl{width:100%;border-collapse:collapse;min-width:640px;font-size:14.5px}
table.tbl th,table.tbl td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
table.tbl thead th{background:var(--bg-soft);font-weight:700;color:var(--ink);white-space:nowrap;font-size:14px}
table.tbl tbody tr:last-child td{border-bottom:0}
table.tbl tbody tr:hover{background:#fafcff}
table.tbl td b{font-weight:700}
.tbl-hint{font-size:13px;color:var(--ink-3);margin-top:10px}

/* 列表勾选 */
.ticks{display:grid;gap:10px;margin-top:6px}
.ticks li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--ink-2)}
.ticks li svg{width:17px;height:17px;color:var(--brand);flex:none;margin-top:5px}

/* ---------- 案例 ---------- */
.case{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  display:grid;grid-template-columns:.9fr 1.1fr;
}
.case + .case{margin-top:26px}
.case-media{background:var(--bg-soft);border-right:1px solid var(--line);padding:26px;display:flex;align-items:center;justify-content:center;min-height:260px}
.case-media img{max-height:300px;width:auto;object-fit:contain}
.case-body{padding:30px}
.case-body h3{margin-bottom:6px}
.case-meta{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 18px}
.case-meta span{
  padding:5px 12px;border-radius:999px;background:var(--bg-soft2);color:var(--ink-2);
  font-size:13px;border:1px solid var(--line);
}
.case-block{margin-top:16px}
.case-block h4{font-size:14px;color:var(--brand);font-weight:800;letter-spacing:.04em;margin-bottom:6px}
.case-block p{font-size:15px;color:var(--ink-2)}
.case.todo .case-media{background:repeating-linear-gradient(135deg,#f2f5f9,#f2f5f9 10px,#eef2f7 10px,#eef2f7 20px)}
.todo-box{
  border:1px dashed var(--line-2);border-radius:var(--r-md);
  padding:18px;text-align:center;color:var(--ink-3);font-size:14px;background:#fff;
}

/* ---------- 资质证书 / 检验报告 ---------- */
.cert-fig{margin:0}
.cert-fig img{
  display:block;width:100%;height:auto;border-radius:10px;
  border:1px solid var(--line);background:#fff;box-shadow:0 2px 10px rgba(15,35,70,.05);
}
.cert-fig figcaption{
  margin-top:9px;font-size:12.5px;color:var(--ink-3);letter-spacing:.02em;
}
.cert-fig[data-zoom]{cursor:zoom-in}
.cert-fig[data-zoom]:hover img{border-color:var(--brand)}

/* 资质三卡：等高 / 图框统一 / 说明底线对齐 */
.cert-grid{align-items:stretch;gap:20px}
.cert-card{
  display:flex;flex-direction:column;
  padding:24px 24px 18px;background:#fff;
}
.cert-card .cert-top{display:flex;align-items:flex-start;gap:11px;margin-bottom:12px}
.cert-card .cert-year{
  flex:none;display:inline-flex;align-items:center;justify-content:center;
  min-width:54px;height:25px;padding:0 10px;border-radius:999px;
  font-size:12.5px;font-weight:800;letter-spacing:.05em;
  color:var(--brand);background:rgba(22,104,227,.08);border:1px solid rgba(22,104,227,.18);
}
.cert-card h3{font-size:16.5px;line-height:1.5;margin:0}
.cert-card .cert-desc{
  min-height:50px;margin:0 0 16px;
  font-size:13.5px;line-height:1.75;color:var(--ink-3);
}
.cert-card .cert-desc b{color:var(--ink);font-weight:700;letter-spacing:.02em}
.cert-card .cert-shot{
  margin:0;padding:10px;border-radius:14px;
  border:1px solid var(--line);background:linear-gradient(180deg,#fbfcfe,#f3f7fb);
  aspect-ratio:1.44/1;display:flex;align-items:center;justify-content:center;
  overflow:hidden;cursor:zoom-in;transition:all .26s var(--ease);
}
.cert-card .cert-shot img{
  display:block;max-width:100%;max-height:100%;width:auto;height:auto;
  object-fit:contain;border-radius:8px;background:#fff;
  border:1px solid rgba(15,35,70,.07);box-shadow:0 3px 14px rgba(15,35,70,.10);
}
.cert-card .cert-shot:hover{border-color:var(--brand);background:#fff;box-shadow:0 6px 20px rgba(15,35,70,.10)}
.cert-card .cert-cap{
  margin-top:auto;padding-top:14px;
  font-size:12.5px;color:var(--ink-3);letter-spacing:.02em;text-align:center;
}
@media (max-width:820px){
  .cert-card .cert-desc{min-height:0}
}

/* ---------- 解决方案 · 门型 ---------- */
.door-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.door-tabs button{
  padding:10px 22px;border-radius:999px;border:1px solid var(--line-2);background:#fff;
  font-size:15px;font-weight:600;color:var(--ink-2);transition:all .22s var(--ease);
}
.door-tabs button:hover{border-color:var(--brand);color:var(--brand)}
.door-tabs button.on{background:var(--brand);border-color:var(--brand);color:#fff}
.door-panel{display:none}
.door-panel.on{display:block}
.door-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.door-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:30px}
.door-card h3{font-size:20px;margin-bottom:14px;display:flex;align-items:center;gap:10px}
.door-card h3 .dot{width:9px;height:9px;border-radius:50%;background:var(--brand);flex:none}
.door-rows{display:grid;gap:18px}
.door-row h4{
  font-size:13px;letter-spacing:.08em;font-weight:800;color:var(--brand);
  margin-bottom:6px;display:flex;align-items:center;gap:8px;
}
.door-row h4::before{content:"";width:14px;height:2px;background:var(--brand);border-radius:2px;flex:none}
.door-row p{font-size:15px;color:var(--ink-2)}
.door-flow{display:grid;gap:10px;margin-top:4px}
.door-flow li{
  display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:var(--ink-2);
  background:var(--bg-soft);border-radius:var(--r-sm);padding:11px 14px;
}
.door-flow li b{
  flex:none;width:22px;height:22px;border-radius:50%;background:var(--brand);color:#fff;
  font-size:12px;display:flex;align-items:center;justify-content:center;margin-top:2px;
}

/* ---------- 时间线 ---------- */
.tl{display:grid;gap:0;position:relative;padding-left:0}
.tl-item{
  display:grid;grid-template-columns:150px 1fr;gap:26px;
  padding:26px 0;border-bottom:1px solid var(--line);position:relative;
}
.tl-item:last-child{border-bottom:0}
.tl-when{text-align:right;padding-top:2px}
.tl-when b{display:block;font-size:17px;font-weight:800;line-height:1.4}
.tl-when span{font-size:13px;color:var(--ink-3)}
.tl-what h3{font-size:18px;margin-bottom:8px}
.tl-what p{color:var(--ink-2);font-size:15px}

/* ---------- 联系 ---------- */
.contact-hero{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center}
.tel-big{
  display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;
  font-size:clamp(32px,5vw,52px);font-weight:800;letter-spacing:-.01em;line-height:1.15;
}
.tel-big a{color:#fff}
.tel-hours{color:rgba(255,255,255,.72);font-size:15px;margin-top:10px}
.info-list{display:grid;gap:16px}
.info-item{display:grid;grid-template-columns:120px 1fr;gap:18px;padding:16px 0;border-bottom:1px solid var(--line)}
.info-item:last-child{border-bottom:0}
.info-item dt{color:var(--ink-3);font-size:14.5px}
.info-item dd{margin:0;font-size:15.5px;font-weight:600}
.info-item dd .sub{display:block;font-weight:400;font-size:13.5px;color:var(--ink-3);margin-top:3px}

.form{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:30px;
}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:7px}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line-2);border-radius:var(--r-sm);
  font:inherit;font-size:15px;color:var(--ink);background:#fff;transition:border-color .2s var(--ease);
}
.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--brand)}
.field textarea{min-height:90px;resize:vertical}
.form-note{font-size:13px;color:var(--ink-3);margin-top:12px}

/* ---------- CTA 通条 ---------- */
.cta{
  padding:64px 0;color:#fff;text-align:center;
  background:linear-gradient(120deg,var(--navy-800),var(--navy-700) 60%,#0d3a66);
}
.cta .h2{margin-bottom:14px}
.cta p{color:rgba(255,255,255,.8);max-width:44em;margin:0 auto 26px;font-size:16.5px}
.cta .btn-row{justify-content:center}
.cta .tel-line{margin-top:20px;font-size:15px;color:rgba(255,255,255,.72)}
.cta .tel-line a{color:#fff;font-weight:800}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--navy-900);color:rgba(255,255,255,.68);padding:52px 0 30px;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:30px;padding-bottom:30px;border-bottom:1px solid rgba(255,255,255,.1)}
.foot-grid h4{color:#fff;font-size:15px;margin-bottom:14px;font-weight:700}
.foot-grid ul li{margin-bottom:8px}
.foot-grid a:hover{color:#fff}
.foot-logo{display:flex;align-items:center;gap:11px;margin-bottom:14px}
.foot-logo .logo-mark{width:88px;height:auto}
.foot-logo b{color:#fff;font-size:16px}
.foot-bottom{padding-top:22px;display:flex;flex-wrap:wrap;gap:10px 22px;justify-content:space-between;font-size:13px}
.foot-bottom .icp{color:rgba(255,255,255,.55)}
.foot-bottom .icp a{color:inherit;text-decoration:none}
.foot-bottom .icp a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.foot-bottom a{color:rgba(255,255,255,.62)}

/* ---------- 手机端底部悬浮拨号 ---------- */
.callbar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;display:none;
  background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -8px 24px -20px rgba(11,28,48,.6);
  padding:9px 12px calc(9px + env(safe-area-inset-bottom));
}
.callbar .cb-in{display:flex;gap:10px;align-items:center;max-width:var(--wrap);margin:0 auto}
.callbar a{
  flex:1;height:46px;border-radius:999px;display:flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:700;
}
.callbar .cb-tel{background:var(--brand);color:#fff}
.callbar .cb-tel svg{width:17px;height:17px}
.callbar .cb-form{border:1px solid var(--line-2);color:var(--ink);flex:0 0 38%}

/* 返回顶部 */
.totop{
  position:fixed;right:18px;bottom:88px;z-index:70;width:44px;height:44px;border-radius:50%;
  background:#fff;border:1px solid var(--line-2);box-shadow:var(--shadow-2);
  display:flex;align-items:center;justify-content:center;color:var(--ink-2);
  opacity:0;pointer-events:none;transform:translateY(8px);transition:all .28s var(--ease);
}
.totop.on{opacity:1;pointer-events:auto;transform:none}
.totop svg{width:18px;height:18px}

/* 灯箱 */
.lightbox{
  position:fixed;inset:0;z-index:120;background:rgba(3,20,42,.9);
  display:none;align-items:center;justify-content:center;padding:24px;cursor:zoom-out;
}
.lightbox.on{display:flex}
.lightbox img{max-width:100%;max-height:88vh;border-radius:8px;background:#fff}

/* 滚动进场 */
.rv{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.rv.in{opacity:1;transform:none}

/* 待补标签 */
.tag-todo{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:999px;font-size:12px;font-weight:700;
  background:#fff5e6;color:#a06a00;border:1px solid #ffe0ad;
}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-grid > *{min-width:0}
  .hero-visual{order:-1}
  .hero-visual img{width:100%;max-width:400px;height:auto;margin:0 auto}
  .prod-grid{grid-template-columns:repeat(2,1fr)}
  .evid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:980px){
  .nav{display:none}
  .burger{display:flex;margin-left:0}
  .header-tel{margin-left:auto}
  .pain,.steps,.g3,.g4,.part-grid{grid-template-columns:repeat(2,1fr)}
  .door-grid{grid-template-columns:1fr}
  .contact-hero{grid-template-columns:1fr}
  .case{grid-template-columns:1fr}
  .case-media{border-right:0;border-bottom:1px solid var(--line)}
}
@media (max-width:860px){
  .section{padding:58px 0}
  .tl-item{grid-template-columns:1fr;gap:8px}
  .tl-when{text-align:left}
  .tl-when b{display:inline-block;margin-right:8px}
}
@media (max-width:620px){
  body{font-size:15.5px}
  .wrap{padding:0 16px}
  .header-in{padding:0 16px}
  .logo-txt span{display:none}
  .logo-mark{width:58px}
  .header-tel{display:none}
  .hero{padding-top:calc(var(--header-h) + 34px)}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .hero-stats > div:nth-child(2){border-right:0}
  .hero-stats > div:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .prod-grid,.prod-grid.two,.pain,.steps,.g2,.g3,.g4,.part-grid{grid-template-columns:1fr}
  .evid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr}
  .card,.case-body,.door-card,.form{padding:22px}
  .btn{width:100%}
  .btn-row .btn{width:100%}
  .callbar{display:block}
  body{padding-bottom:64px}
  .totop{bottom:78px}
  .info-item{grid-template-columns:1fr;gap:4px}
  .sec-head{margin-bottom:28px}
  .chips span{font-size:12.5px}
}
/* 矮屏笔记本：压缩首屏，尽量一屏看完 */
@media (min-width:1100px) and (max-height:830px){
  .hero{padding-top:calc(var(--header-h) + 20px);padding-bottom:28px}
  .hero h1{font-size:40px}
  .hero-badge{margin-bottom:14px}
  .hero-sub{margin-bottom:20px;font-size:16px}
  .hero-note{margin-top:16px}
  .hero-stats{margin-top:22px}
  .hero-stats > div{padding:14px 16px}
  .hero-stats .v{font-size:22px}
  .hero .btn{height:44px}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .rv{opacity:1;transform:none}
}