/* ==========================================================================
   ALUMINUM GRADE — main.css
   设计系统：铝蓝 #0f6fbd 主色 + 银灰金属质感
   与 ChengRoll 工业橙 #ff7a1a 完全隔离，不复用任何颜色 token
   ========================================================================== */

:root{
  /* 文字 */
  --ink:#12181e; --ink-2:#2a343d; --muted:#65717c; --muted-2:#8b97a2;
  /* 背景与线 */
  --bg:#ffffff; --bg-soft:#f5f8fa; --bg-soft-2:#eef3f7; --bg-deep:#0d151b;
  --line:#e2e8ee; --line-2:#cfd8e0;
  /* 主色：铝蓝（阳极氧化铝常见蓝） */
  --accent:#0f6fbd; --accent-dark:#0a5290; --accent-deep:#073c69;
  --accent-soft:#e8f2fc; --accent-soft-2:#d3e6fa;
  /* 金属银灰（铝本色） */
  --alu:#8c9aa6; --alu-dark:#5d6b77; --alu-light:#dfe6ec; --alu-pale:#f2f6f9;
  /* 语义 */
  --ok:#0d7d4f; --warn:#b06a00; --err:#b3261e;
  /* 几何 */
  --radius:10px; --radius-sm:6px; --radius-lg:16px; --maxw:1240px;
  --shadow:0 1px 3px rgba(18,24,30,.06), 0 8px 24px rgba(18,24,30,.05);
  --shadow-lg:0 4px 12px rgba(18,24,30,.10), 0 24px 60px rgba(18,24,30,.12);
  --shadow-accent:0 6px 20px rgba(15,111,189,.28);
  /* 动效 */
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px; line-height:1.65; -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent-dark);text-decoration:none}
a:hover{color:var(--accent)}
h1,h2,h3,h4,h5{line-height:1.22;letter-spacing:-.015em;font-weight:750;margin:0 0 .5em}
h1{font-size:clamp(29px,4.2vw,46px)}
h2{font-size:clamp(23px,2.7vw,34px)}
h3{font-size:19px}
h4{font-size:16.5px}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.25em}
strong{font-weight:700}
em{font-style:normal;color:var(--accent);font-weight:inherit}

/* ---------- 布局 ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.wrap-narrow{max-width:920px;margin:0 auto;padding:0 24px}
.section{padding:76px 0}
.section--soft{background:var(--bg-soft)}
.section--deep{background:var(--bg-deep);color:#fff}
.section--deep h2,.section--deep h3{color:#fff}
.section--tight{padding:52px 0}
.divider{height:1px;background:var(--line);margin:0}
.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)}
.center{text-align:center}

/* ---------- 文本工具 ---------- */
.eyebrow{font-size:12.5px;font-weight:750;letter-spacing:.16em;text-transform:uppercase;color:var(--accent-dark);margin-bottom:12px}
.section--deep .eyebrow{color:#7fc0f5}
.lead{font-size:17.5px;color:var(--ink-2);max-width:820px}
.section--deep .lead{color:#c3cfda}
.sub{font-size:15px;color:var(--muted)}
.small{font-size:14px}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em}

/* ---------- 顶栏 ---------- */
.topbar{background:var(--bg-deep);color:#aebac6;font-size:12.5px;padding:9px 0;border-bottom:1px solid rgba(255,255,255,.07)}
.topbar .wrap{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.topbar a{color:#cdd8e3}
.topbar a:hover{color:#fff}
.topbar .sep{width:1px;height:12px;background:rgba(255,255,255,.16)}
.topbar .grow{flex:1}

/* ---------- 头部 ---------- */
header.site{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--line);transition:box-shadow .25s var(--ease)}
header.site.scrolled{box-shadow:0 2px 14px rgba(18,24,30,.09)}
.hd{display:flex;align-items:center;gap:20px;height:70px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:var(--ink);letter-spacing:-.02em;white-space:nowrap}
.logo:hover{color:var(--ink)}
.logo-mark{width:30px;height:30px;flex:0 0 30px;border-radius:7px;background:linear-gradient(145deg,var(--accent) 0%,var(--accent-dark) 100%);display:grid;place-items:center;box-shadow:0 2px 8px rgba(15,111,189,.32)}
.logo-mark svg{width:17px;height:17px;fill:#fff}
.logo small{display:block;font-size:10.5px;font-weight:600;color:var(--muted);letter-spacing:.06em;text-transform:uppercase;line-height:1}
nav.main{margin-left:auto;display:flex;align-items:center;gap:4px}
nav.main a.navlink{padding:8px 11px;border-radius:var(--radius-sm);font-size:14.5px;font-weight:600;color:var(--ink-2)}
nav.main a.navlink:hover{background:var(--accent-soft);color:var(--accent-dark)}
nav.main a.navlink.active{color:var(--accent-dark);background:var(--accent-soft)}
.nav-toggle{display:none;margin-left:auto;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff;cursor:pointer;align-items:center;justify-content:center}
.nav-toggle span{display:block;width:17px;height:1.6px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:17px;height:1.6px;background:var(--ink)}
.nav-toggle span::before{top:-5.5px} .nav-toggle span::after{top:5.5px}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:var(--radius-sm);font-size:15px;font-weight:700;letter-spacing:-.01em;border:1px solid transparent;cursor:pointer;transition:all .2s var(--ease);white-space:nowrap}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow-accent)}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 24px rgba(15,111,189,.34)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line-2)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent-dark)}
.btn-outline-light{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.42);backdrop-filter:blur(4px)}
.btn-outline-light:hover{background:rgba(255,255,255,.17);border-color:rgba(255,255,255,.7);color:#fff}
.btn-lg{padding:15px 30px;font-size:16.5px}
.btn-sm{padding:8px 15px;font-size:14px}
.btn svg{width:16px;height:16px;fill:currentColor}
.btn-row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}

/* ---------- Hero：首页深色实拍 ---------- */
.hero{position:relative;background:var(--bg-deep);color:#fff;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.30}
.hero-mask{position:absolute;inset:0;background:linear-gradient(105deg,rgba(11,18,24,.94) 0%,rgba(13,21,27,.78) 52%,rgba(13,21,27,.46) 100%)}
/* 拉丝金属纹理（无图时的兜底质感） */
.hero-brush{position:absolute;inset:0;opacity:.16;background-image:repeating-linear-gradient(102deg,rgba(255,255,255,.055) 0 1px,transparent 1px 4px),repeating-linear-gradient(102deg,rgba(0,0,0,.05) 0 1px,transparent 1px 7px)}
.hero-inner{position:relative;padding:92px 0 76px}
.hero h1{color:#fff;max-width:19em}
.hero h1 em{color:#7fc0f5}
.hero-sub{font-size:18.5px;color:#c3cfda;max-width:700px;margin:0 0 30px}
.hero-note{font-size:13.5px;color:#8b9aa8;margin-top:16px}

/* 数据条：用 1px 缝分隔，不是卡片间隙 */
.statbar{position:relative;display:grid;grid-template-columns:repeat(4,1fr);margin-top:52px;border-top:1px solid rgba(255,255,255,.14);border-bottom:1px solid rgba(255,255,255,.14)}
.statbar .cell{padding:22px 20px;border-left:1px solid rgba(255,255,255,.14)}
.statbar .cell:first-child{border-left:0;padding-left:0}
.statbar .n{font-size:27px;font-weight:800;color:#fff;line-height:1.1;letter-spacing:-.02em}
.statbar .n small{font-size:15px;font-weight:700;color:#9fb2c4;margin-left:2px}
.statbar .t{font-size:12.5px;text-transform:uppercase;letter-spacing:.09em;color:#8b9aa8;margin-top:5px}

/* ---------- Hero：产品页舞台（白托盘 + 蓝晕） ---------- */
.hero-stage{position:relative;background:radial-gradient(125% 130% at 74% 40%,#1d2c37 0%,#121b22 46%,#0d151b 100%);color:#fff;overflow:hidden}
.hero-stage .hs-grid{position:relative;display:grid;grid-template-columns:1.04fr .96fr;gap:40px;align-items:center;padding:66px 0 58px}
.hero-stage h1{color:#fff;font-size:clamp(26px,3.4vw,39px);margin-bottom:.35em}
.hero-stage .hs-sub{color:#b7c5d2;font-size:16.5px;max-width:560px}
.halo{position:relative;display:grid;place-items:center}
.halo::before{content:"";position:absolute;width:130%;aspect-ratio:1;background:radial-gradient(circle,rgba(15,111,189,.26) 0%,transparent 68%)}
.plate{position:relative;width:100%;max-width:392px;aspect-ratio:1;border-radius:var(--radius-lg);background:linear-gradient(158deg,#fcfdfe,#eaf0f4 58%,#dbe4ea);display:grid;place-items:center;padding:26px;box-shadow:0 18px 50px rgba(0,0,0,.42),0 2px 8px rgba(0,0,0,.24)}
.plate img{max-width:100%;max-height:100%;object-fit:contain;filter:drop-shadow(0 6px 14px rgba(0,0,0,.16))}

/* ---------- 面包屑 ---------- */
.crumbs{font-size:13px;color:var(--muted);padding:16px 0 0}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--accent-dark)}
.crumbs span{margin:0 7px;color:var(--line-2)}

/* ---------- 卡片 ---------- */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .28s var(--ease),box-shadow .28s var(--ease)}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.card-media{aspect-ratio:4/3;background:var(--bg-soft-2);overflow:hidden;display:grid;place-items:center}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.card:hover .card-media img{transform:scale(1.05)}
.card-body{padding:20px}
.card-body h3{font-size:17px;margin-bottom:6px}
.card-body h3 a{color:var(--ink)}
.card-body h3 a:hover{color:var(--accent-dark)}
.card-body p{font-size:14.5px;color:var(--muted);margin:0}
.card-tag{display:inline-block;font-size:11.5px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;color:var(--accent-dark);background:var(--accent-soft);padding:3px 9px;border-radius:100px;margin-bottom:10px}

/* 左竖条卡片（流程/要点） */
.step{background:#fff;border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:var(--radius);padding:20px 22px}
.step h3{font-size:16.5px;margin-bottom:6px;display:flex;align-items:center;gap:9px}
.step .num{display:inline-grid;place-items:center;width:24px;height:24px;flex:0 0 24px;border-radius:50%;background:var(--accent-soft);color:var(--accent-dark);font-size:12.5px;font-weight:800}
.step p{font-size:14.5px;color:var(--muted);margin:0}

/* ---------- 表格 ---------- */
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table.spec{width:100%;border-collapse:collapse;font-size:14.5px;min-width:560px}
table.spec th,table.spec td{padding:11px 15px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
table.spec thead th{background:var(--bg-soft);font-weight:700;font-size:13px;text-transform:uppercase;letter-spacing:.05em;color:var(--ink-2);white-space:nowrap}
table.spec tbody tr:last-child td{border-bottom:0}
table.spec tbody tr:hover{background:var(--alu-pale)}
table.spec td.num{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13.5px;white-space:nowrap}

/* ---------- 徽章 / 标签 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:700;padding:4px 11px;border-radius:100px;background:var(--accent-soft);color:var(--accent-dark)}
.badge-ok{background:#e6f5ed;color:var(--ok)}
.badge-alu{background:var(--alu-light);color:var(--alu-dark)}
.badge svg{width:13px;height:13px;fill:currentColor}

/* ---------- 色卡（阳极氧化） ---------- */
.swatches{display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:12px}
.swatch{border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--line);background:#fff}
.swatch .chip{aspect-ratio:1.5;background:linear-gradient(150deg,#fff 0%,rgba(0,0,0,.10) 100%)}
.swatch .lbl{font-size:12px;padding:7px 8px;text-align:center;color:var(--ink-2);font-weight:600}

/* ---------- 折叠 FAQ ---------- */
details.faq{border:1px solid var(--line);border-radius:var(--radius);background:#fff;margin-bottom:10px;overflow:hidden}
details.faq summary{cursor:pointer;padding:16px 20px;font-weight:700;font-size:15.5px;list-style:none;display:flex;justify-content:space-between;gap:14px;align-items:center}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"";width:9px;height:9px;flex:0 0 9px;border-right:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(45deg);transition:transform .22s var(--ease)}
details.faq[open] summary::after{transform:rotate(-135deg)}
details.faq .faq-body{padding:0 20px 18px;font-size:14.5px;color:var(--ink-2)}
details.faq .faq-body p:last-child{margin-bottom:0}

/* ---------- 表单 ---------- */
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px;box-shadow:var(--shadow)}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:700;color:var(--ink-2);margin-bottom:6px}
.field label .req{color:var(--err)}
.field input,.field select,.field textarea{width:100%;padding:11px 13px;border:1px solid var(--line-2);border-radius:var(--radius-sm);font-size:15px;font-family:inherit;background:#fff;color:var(--ink);transition:border-color .18s,box-shadow .18s}
.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--accent);box-shadow:0 0 0 3px rgba(15,111,189,.14)}
.field textarea{min-height:104px;resize:vertical}
.field .hint{font-size:12.5px;color:var(--muted);margin-top:5px}
.field-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}

/* ---------- 悬浮转化栏（右侧三合一） ---------- */
.fab-rail{position:fixed;right:16px;top:50%;transform:translateY(-50%);z-index:70;display:flex;flex-direction:column;gap:10px}
.fab-rail .fab{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;box-shadow:0 6px 18px rgba(18,24,30,.22);transition:transform .22s var(--ease),opacity .28s var(--ease);background:#fff;border:1px solid var(--line)}
.fab-rail .fab svg{width:21px;height:21px}
.fab-rail .fab:hover{transform:translateY(-3px) scale(1.05)}
.fab-rail .fab-wa{background:#25d366;border-color:#25d366}
.fab-rail .fab-wa svg{fill:#fff}
.fab-rail .fab-mail{background:var(--accent);border-color:var(--accent)}
.fab-rail .fab-mail svg{fill:#fff}
.fab-rail.off{opacity:0;pointer-events:none}
/* ---------- 悬浮 CTA 条（滚动后出现） ---------- */
.sticky-cta{position:fixed;left:0;right:0;bottom:0;z-index:65;background:rgba(255,255,255,.97);backdrop-filter:blur(10px);border-top:1px solid var(--line);padding:10px 0;transform:translateY(110%);transition:transform .3s var(--ease);box-shadow:0 -4px 20px rgba(18,24,30,.08)}
.sticky-cta.show{transform:translateY(0)}
.sticky-cta .wrap{display:flex;align-items:center;gap:16px}
.sticky-cta .txt{font-size:14.5px;font-weight:650;color:var(--ink-2);flex:1;min-width:0}
.sticky-cta .txt span{color:var(--muted);font-weight:500}

/* ---------- 计算器 ---------- */
.calc{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow)}
.calc-out{margin-top:20px;padding:20px;border-radius:var(--radius);background:linear-gradient(150deg,var(--accent-soft) 0%,var(--bg-soft) 100%);border:1px solid var(--accent-soft-2)}
.calc-out .big{font-size:30px;font-weight:800;color:var(--accent-dark);letter-spacing:-.02em;line-height:1.15}
.calc-out .rows{margin-top:12px;font-size:14px;color:var(--ink-2)}
.calc-out .rows div{display:flex;justify-content:space-between;padding:5px 0;border-top:1px solid rgba(15,111,189,.14)}
.calc-out .rows div:first-child{border-top:0}

/* ---------- 牌号选择器 ---------- */
.grade-pick{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:start}
.grade-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.grade-chip{border:1px solid var(--line-2);background:#fff;border-radius:100px;padding:6px 14px;font-size:14px;font-weight:700;cursor:pointer;transition:all .18s var(--ease);font-family:ui-monospace,Menlo,monospace}
.grade-chip:hover{border-color:var(--accent);color:var(--accent-dark)}
.grade-chip.on{background:var(--accent);border-color:var(--accent);color:#fff}

/* ---------- 证书 / 数据墙 ---------- */
.milltable td:first-child{font-weight:700;color:var(--ink)}
.quote-block{border-left:3px solid var(--accent);background:var(--bg-soft);padding:16px 20px;border-radius:0 var(--radius) var(--radius) 0;font-size:15px;color:var(--ink-2);margin:18px 0}
.quote-block strong{color:var(--ink)}

/* ---------- 页脚 ---------- */
footer.site{background:var(--bg-deep);color:#a3b1bf;padding:56px 0 26px;font-size:14.5px}
footer.site h4{color:#fff;font-size:14px;text-transform:uppercase;letter-spacing:.08em;margin-bottom:14px}
footer.site a{color:#a3b1bf}
footer.site a:hover{color:#fff}
.fgrid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px}
.fgrid ul{list-style:none;padding:0;margin:0}
.fgrid li{margin-bottom:8px}
.fbottom{border-top:1px solid rgba(255,255,255,.09);margin-top:38px;padding-top:20px;font-size:13px;color:#7c8b99;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* ---------- 动效：滚动渐显 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .55s var(--ease),transform .55s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}

/* ---------- 响应式 ---------- */
@media (max-width:1000px){
  .g4{grid-template-columns:repeat(2,1fr)}
  .g3{grid-template-columns:repeat(2,1fr)}
  .fgrid{grid-template-columns:1fr 1fr}
  .hero-stage .hs-grid{grid-template-columns:1fr;gap:30px}
  .halo{order:-1}
}
@media (max-width:820px){
  nav.main{display:none;position:absolute;top:70px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:10px 14px;gap:2px;box-shadow:var(--shadow);max-height:calc(100vh - 70px);overflow-y:auto}
  nav.main.open{display:flex}
  nav.main a.navlink{padding:12px 12px;font-size:15.5px}
  .nav-toggle{display:inline-flex}
  .section{padding:54px 0}
  .hero-inner{padding:64px 0 54px}
  .statbar{grid-template-columns:1fr 1fr}
  .statbar .cell{padding:16px 16px}
  .statbar .cell:nth-child(3){border-left:0;padding-left:0}
  .statbar .cell:nth-child(3),.statbar .cell:nth-child(4){border-top:1px solid rgba(255,255,255,.14)}
}
@media (max-width:620px){
  .g2,.g3,.g4{grid-template-columns:1fr}
  .grade-pick{grid-template-columns:1fr}
  .fgrid{grid-template-columns:1fr}
  .field-2{grid-template-columns:1fr}
  .wrap{padding:0 18px}
  .statbar{grid-template-columns:1fr 1fr}
  .fab-rail{right:10px;gap:8px}
  .fab-rail .fab{width:42px;height:42px}
  .sticky-cta .txt span{display:none}
}

/* ---------- 打印 ---------- */
@media print{
  .fab-rail,.sticky-cta,nav.main,.nav-toggle,header.site .btn{display:none!important}
  body{font-size:11.5pt}
  .section{padding:18px 0}
  a[href^="http"]::after{content:" (" attr(href) ")";font-size:9pt;color:#666}
}

/* ---- 品类页 Hero 托盘：真实产品图 + 厚度/牌号说明条 ---- */
.plate--photo{position:relative;padding:0;overflow:hidden}
.plate--photo img{width:100%;height:100%;object-fit:cover;display:block;border-radius:var(--radius)}
.plate-cap{margin:12px 0 0;text-align:center;font-size:12.5px;font-weight:600;
  letter-spacing:.04em;color:#8b9aa8;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}

/* ---- 规格表行内缩略图 ---- */
.row-thumb{display:flex;align-items:center;gap:12px;text-decoration:none}
.row-thumb img{width:64px;height:48px;object-fit:cover;border-radius:5px;
  border:1px solid var(--line);flex:none;background:var(--bg-soft-2)}
.row-thumb:hover img{border-color:var(--accent)}
.row-thumb strong{color:var(--accent-dark)}
@media(max-width:640px){.row-thumb img{width:48px;height:36px}}

/* ---- 品类页 Hero 托盘：真实产品图 + 厚度/牌号说明条 ---- */
.plate--photo{position:relative;padding:0;overflow:hidden}
.plate--photo img{width:100%;height:100%;object-fit:cover;display:block;border-radius:var(--radius)}
.plate-cap{margin:12px 0 0;text-align:center;font-size:12.5px;font-weight:600;
  letter-spacing:.04em;color:#8b9aa8;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}

/* ---- 规格表行内缩略图 ---- */
.row-thumb{display:flex;align-items:center;gap:12px;text-decoration:none}
.row-thumb img{width:64px;height:48px;object-fit:cover;border-radius:5px;
  border:1px solid var(--line);flex:none;background:var(--bg-soft-2)}
.row-thumb:hover img{border-color:var(--accent)}
.row-thumb strong{color:var(--accent-dark)}
@media(max-width:640px){.row-thumb img{width:48px;height:36px}}

/* ---- 场地图廊（示意图，附说明）—— 4 格，无阴影的大图 ---- */
.shotwall{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:26px}
.shotwall figure{margin:0}
.shotwall img{width:100%;aspect-ratio:6/5;object-fit:cover;border-radius:var(--radius);
  border:1px solid var(--line);display:block;transition:transform .4s var(--ease)}
.shotwall figure:hover img{transform:scale(1.03)}
.shotwall figcaption{margin-top:8px;font-size:13px;color:var(--muted);font-weight:600}
@media(max-width:900px){.shotwall{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.shotwall{grid-template-columns:1fr}}

/* =================================================================
   二级下拉导航（参照成熟外贸站的双行结构：名称 + 一句说明）
   桌面 hover/focus 展开；移动端在汉堡菜单里平铺，不做浮层。
   ================================================================= */
nav.main .has-menu { position:relative }
nav.main .has-menu > a.navlink::after {
  content:"";display:inline-block;width:6px;height:6px;margin-left:7px;
  border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;
  transform:translateY(-3px) rotate(45deg);opacity:.5;transition:transform .2s var(--ease)
}
nav.main .has-menu:hover > a.navlink::after { transform:translateY(-1px) rotate(225deg);opacity:.9 }
nav.main .sub {
  display:none;position:absolute;top:calc(100% + 8px);left:-14px;z-index:90;
  min-width:340px;padding:8px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow-lg)
}
/* 下拉与触发点之间的空隙会让鼠标移过去时丢失 hover，用伪元素补一段桥接区 */
nav.main .sub::before { content:"";position:absolute;top:-10px;left:0;right:0;height:10px }
nav.main .has-menu:hover > .sub,
nav.main .has-menu:focus-within > .sub { display:block }
nav.main .sub a { display:block;padding:9px 12px;border-radius:var(--radius-sm);text-decoration:none }
nav.main .sub a b { display:block;font-size:14px;font-weight:650;color:var(--ink);line-height:1.35 }
nav.main .sub a span {
  display:block;font-size:12.5px;font-weight:400;color:var(--muted);
  margin-top:2px;line-height:1.45
}
nav.main .sub a:hover { background:var(--accent-soft) }
nav.main .sub a:hover b { color:var(--accent-dark) }
nav.main .sub a:hover span { color:var(--accent-dark) }
nav.main .sub .sub-all {
  margin-top:5px;padding-top:12px;border-top:1px solid var(--line);border-radius:0
}
nav.main .sub .sub-all b { color:var(--accent-dark);font-size:13.5px }

/* =================================================================
   产品总览页：图片卡片网格（替掉原来那个挤压文字的窄表）
   ================================================================= */
.phero { position:relative;overflow:hidden;background:var(--bg-deep);color:#fff }
.phero-bg { position:absolute;inset:0 }
.phero-bg img { width:100%;height:100%;object-fit:cover;opacity:.34 }
.phero::after {
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(8,17,25,.94) 0%,rgba(8,17,25,.78) 46%,rgba(15,111,189,.42) 100%)
}
.phero .wrap { position:relative;z-index:2;padding:52px 0 44px }
.phero h1 { color:#fff;margin:14px 0 0;font-size:38px;line-height:1.18;max-width:820px }
.phero-sub { color:#c2cede;font-size:17px;line-height:1.65;max-width:760px;margin:16px 0 0 }
.phero .crumbs a { color:#a8b8c8 }
.phero .crumbs { color:#7c8b9b }
.phero-facts { display:flex;flex-wrap:wrap;gap:0;margin-top:30px;border-top:1px solid rgba(255,255,255,.14) }
.phero-facts div { padding:18px 34px 0 0;margin-right:34px;border-right:1px solid rgba(255,255,255,.12) }
.phero-facts div:last-child { border-right:0 }
.phero-facts b { display:block;font-size:24px;font-weight:750;color:#fff;letter-spacing:-.01em }
.phero-facts span { display:block;font-size:12.5px;color:#93a3b3;margin-top:3px }

/* 分组锚点条（top 要避开 70px 高的吸顶 header，否则会被压在下面） */
.anchorbar { position:sticky;top:70px;z-index:55;background:rgba(255,255,255,.94);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line) }
.anchorbar .wrap { display:flex;align-items:center;gap:8px;overflow-x:auto;
  padding-top:11px;padding-bottom:11px;scrollbar-width:none }
.anchorbar .wrap::-webkit-scrollbar { display:none }
.anchorbar .ab-label { font-size:12px;text-transform:uppercase;letter-spacing:.09em;
  color:var(--muted-2);font-weight:700;flex:none;padding-right:6px }
.anchorbar a { flex:none;font-size:14px;font-weight:600;color:var(--ink-2);
  text-decoration:none;padding:7px 14px;border:1px solid var(--line);
  border-radius:100px;background:#fff;transition:.16s var(--ease) }
.anchorbar a:hover { border-color:var(--accent);color:var(--accent-dark);background:var(--accent-soft) }
.anchorbar a i { font-style:normal;font-size:11.5px;color:var(--muted);margin-left:5px }

/* 分组标题 */
.grp-hd { display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;
  padding-bottom:14px;margin-bottom:24px;border-bottom:2px solid var(--line) }
.grp-hd h2 { margin:0;font-size:24px }
.grp-hd .grp-meta { font-size:13.5px;color:var(--muted) }
.grp-hd .grp-note { margin-left:auto;font-size:13px;color:var(--muted) }

/* 卡片网格 */
.pgrid { display:grid;grid-template-columns:repeat(3,1fr);gap:24px }
.pcard { display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;text-decoration:none;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease) }
.pcard:hover { transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--accent-soft-2) }
.pcard-media { position:relative;aspect-ratio:16/10;background:var(--bg-soft-2);overflow:hidden }
.pcard-media img { width:100%;height:100%;object-fit:cover;display:block;
  transition:transform .45s var(--ease) }
.pcard:hover .pcard-media img { transform:scale(1.06) }
.pcard-badge { position:absolute;left:12px;top:12px;background:rgba(9,20,28,.72);
  color:#fff;font-size:11.5px;font-weight:650;letter-spacing:.03em;
  padding:5px 10px;border-radius:100px;backdrop-filter:blur(3px) }
.pcard-body { padding:18px 20px 20px;display:flex;flex-direction:column;flex:1 }
.pcard-body h3 { margin:0;font-size:17.5px;line-height:1.3;color:var(--ink) }
.pcard:hover .pcard-body h3 { color:var(--accent-dark) }
/* min-height 让同一行卡片描述区对齐，否则短描述的卡片规格区会往上跑 */
.pcard-desc { margin:8px 0 0;font-size:14px;color:var(--muted);line-height:1.6;min-height:45px }

/* 卡内规格：两列 dl，比表格紧凑、比纯图卡有信息量 */
.spec-mini { margin:14px 0 0;padding-top:14px;border-top:1px dashed var(--line);
  display:grid;grid-template-columns:1fr 1fr;gap:9px 16px }
.spec-mini > div { min-width:0 }
.spec-mini dt { font-size:11px;text-transform:uppercase;letter-spacing:.07em;
  color:var(--muted-2);font-weight:700 }
.spec-mini dd { margin:2px 0 0;font-size:13px;color:var(--ink-2);line-height:1.45;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace }
.spec-mini .span2 { grid-column:1 / -1 }
.pcard-link { margin-top:auto;padding-top:16px;font-size:13.5px;font-weight:700;color:var(--accent-dark) }
.pcard-link::after { content:" →" }
.pcard:hover .pcard-link::after { margin-left:3px }

@media (max-width:1000px){
  .pgrid { grid-template-columns:repeat(2,1fr) }
  .phero h1 { font-size:32px }
}
@media (max-width:820px){
  /* 移动端：下拉不做浮层，平铺进汉堡菜单 */
  nav.main .has-menu { display:contents }
  nav.main .has-menu > a.navlink { font-size:12.5px;text-transform:uppercase;
    letter-spacing:.07em;color:var(--muted);padding-top:14px }
  nav.main .has-menu > a.navlink::after { display:none }
  nav.main .sub { display:block;position:static;min-width:0;box-shadow:none;
    border:0;padding:0;margin:2px 0 4px }
  nav.main .sub a { padding:9px 12px 9px 22px;background:var(--bg-soft) }
  nav.main .sub .sub-all { margin-top:2px;padding-top:10px }
}
@media (max-width:620px){
  .pgrid { grid-template-columns:1fr;gap:18px }
  .phero .wrap { padding:38px 0 32px }
  .phero h1 { font-size:27px }
  .phero-sub { font-size:15.5px }
  .phero-facts div { padding-right:20px;margin-right:20px }
  .phero-facts b { font-size:20px }
  .spec-mini { grid-template-columns:1fr 1fr;gap:8px 12px }
}

/* =================================================================
   首页「余下 13 个品类」压缩区
   目的：首页只放 6 个主推卡片，其余品类用文字链保留内链与可发现性，
   把首页高度压掉约一半，同时 19 个 hub 页一个都不丢链接。
   ================================================================= */
.range-more { margin-top:34px;padding:20px 24px 8px;background:var(--bg-soft);
  border:1px solid var(--line);border-radius:var(--radius) }
.rm-hd { display:flex;align-items:center;justify-content:space-between;gap:16px;
  flex-wrap:wrap;padding-bottom:6px }
.rm-hd h3 { margin:0;font-size:13px;font-weight:700;text-transform:uppercase;
  letter-spacing:.09em;color:var(--muted) }
.rm-row { display:grid;grid-template-columns:158px 1fr;gap:14px;align-items:baseline;
  padding:10px 0;border-top:1px dashed var(--line) }
.rm-g { font-size:11.5px;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:var(--muted-2) }
.rm-l { display:flex;flex-wrap:wrap;gap:6px 18px }
.rm-l a { font-size:14.5px;font-weight:600;color:var(--ink-2);text-decoration:none;
  border-bottom:1px solid transparent;transition:.15s var(--ease) }
.rm-l a:hover { color:var(--accent-dark);border-bottom-color:var(--accent) }
@media (max-width:700px){
  .range-more { padding:18px 18px 6px }
  .rm-row { grid-template-columns:1fr;gap:7px }
}