/* ============================================================
   CNSK — 站点样式
   面向海外 B2B 买家的机械类官网视觉：
   纸面底色 + 墨色文字 + 深墨绿块 + 一点机械警示红。
   直角、细线、等宽数字，整体像一份工程样本册而不是 SaaS 落地页。
   ============================================================ */

/* ---------- 字体（本地自托管，不依赖第三方） ---------- */
@font-face{font-family:'Archivo';font-style:normal;font-weight:700;font-display:swap;src:url('../fonts/Archivo-700.woff2') format('woff2');}
@font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:400;font-display:swap;src:url('../fonts/IBMPlexSans-400.woff2') format('woff2');}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;src:url('../fonts/IBMPlexMono-400.woff2') format('woff2');}

/* ---------- 设计变量 ---------- */
:root{
  --ink:#15181a;
  --ink-2:#2b3136;
  --paper:#f2f1ec;
  --paper-2:#e8e6de;
  --panel:#ffffff;
  --steel:#6f787e;
  --rule:#d2d0c7;
  --deep:#0b3b39;
  --deep-2:#082e2c;
  --signal:#c1381f;
  /* 详情页页内跳转条：想换配色只改下面两行（底色 / 文字色） */
  --jump-bg:#0b3b39;
  --jump-fg:#f2f1ec;
  --jump-hi:#e9a48f;
  --max:1280px;
  --gut:20px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"IBM Plex Sans","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.62;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px;}

/* ---------- 排版 ---------- */
h1,h2,h3,h4{margin:0;font-family:"Archivo","IBM Plex Sans",Arial,sans-serif;font-weight:700;letter-spacing:-.022em;line-height:1.08;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
.mono{font-family:"IBM Plex Mono",ui-monospace,monospace;font-variant-numeric:tabular-nums;}
.lead{font-size:clamp(17px,1.55vw,21px);line-height:1.55;color:var(--ink-2);max-width:62ch;}
.body-note{font-size:14.5px;color:var(--steel);line-height:1.6;max-width:64ch;}

/* 详情页 Overview：小方点短句列表，比整段好读 */
.p-points{list-style:none;margin:0;padding:0;max-width:56ch;}
.p-points li{position:relative;padding-left:20px;margin-bottom:13px;line-height:1.55;}
.p-points li:last-child{margin-bottom:0;}
.p-points li::before{
  content:"";position:absolute;left:0;top:.58em;
  width:6px;height:6px;background:var(--deep);
}

/* 小标签：等宽、小字号、极限字距，用于型号与规格称谓 */
.tag{
  font-family:"IBM Plex Mono",monospace;
  font-size:12px;letter-spacing:.1em;line-height:1.4;
  color:var(--steel);text-transform:uppercase;
}

/* ---------- 布局容器 ---------- */
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--gut);}
.rule{height:1px;background:var(--rule);border:0;margin:0;}
.section{padding:56px 0;}
.section--tight{padding:40px 0;}
.section--deep{background:var(--deep);color:#eef1ef;}
.section--deep .lead,.section--deep .tag,.section--deep .body-note{color:#b7c5c3;}
.section--panel{background:var(--panel);}

/* ---------- 头部 ---------- */
.header{
  position:relative;z-index:20;
  background:var(--paper);
  border-bottom:1px solid var(--rule);
}
.header__inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;height:66px;
}
.brand{display:flex;align-items:center;gap:10px;min-width:0;}
.brand__logo{height:32px;width:auto;flex:none;}
.brand__logo--footer{height:26px;}
.brand__word{font-family:"Archivo",sans-serif;font-weight:700;font-size:21px;letter-spacing:.02em;}
.brand__sub{display:none;font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.12em;color:var(--steel);padding-left:10px;border-left:1px solid var(--rule);}

.nav{display:none;}
.nav a{
  font-size:15px;padding:6px 0;margin-left:26px;color:var(--ink-2);
  border-bottom:1px solid transparent;
}
.nav a:hover,.nav a[aria-current="page"]{border-bottom-color:var(--ink);color:var(--ink);}

.header .header__cta{display:none;}

/* 移动端菜单按钮 */
.menu-btn{
  display:inline-flex;align-items:center;gap:8px;
  background:none;border:1px solid var(--rule);border-radius:2px;
  padding:9px 12px;min-height:40px;cursor:pointer;
}
.menu-btn__bar{display:block;width:18px;height:1.5px;background:var(--ink);position:relative;}
.menu-btn__bar::before,.menu-btn__bar::after{content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--ink);}
.menu-btn__bar::before{top:-5px;}
.menu-btn__bar::after{top:5px;}
.menu-btn__txt{font-size:13px;letter-spacing:.04em;}

.drawer{
  display:none;border-bottom:1px solid var(--rule);background:var(--paper);
}
.drawer.is-open{display:block;}
.drawer ul{list-style:none;margin:0;padding:8px 0 18px;}
.drawer li{border-top:1px solid var(--rule);}
.drawer a{display:block;padding:14px 20px;font-size:16px;}
.drawer a:first-of-type{border-top:0;}

/* ---------- 首屏 ---------- */
.hero{padding:36px 0 0;}
.hero__text{padding-top:0;}
.hero__kicker{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.hero__kicker .dot{width:6px;height:6px;background:var(--signal);flex:none;}
.hero h1{font-size:clamp(32px,7.4vw,54px);margin-bottom:20px;}
.hero h1 em{font-style:normal;color:var(--deep);}
.hero__sub{font-size:clamp(16px,1.5vw,19px);color:var(--ink-2);max-width:46ch;margin-bottom:26px;}
.hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:12px 22px;border:1px solid var(--ink);border-radius:2px;
  font-size:15px;letter-spacing:.01em;
  background:var(--ink);color:#f7f6f2;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn:hover{background:var(--deep);border-color:var(--deep);}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--rule);}
.btn--ghost:hover{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn--signal{background:var(--signal);border-color:var(--signal);color:#fff;}
.btn--signal:hover{background:#a52e18;border-color:#a52e18;}
.btn--wide{width:100%;}

/* 首屏图片：移动端在下，桌面端右侧出血 */
.hero__media{margin-top:8px;position:relative;}
.hero__media img{width:100%;height:auto;border:1px solid var(--rule);}
.hero__caption{
  display:flex;justify-content:space-between;gap:12px;
  padding:9px 0;border-bottom:1px solid var(--rule);
}

/* 数据条 */
.stats{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--rule);margin-top:34px;}
.stat{padding:18px 0 4px;border-bottom:1px solid var(--rule);}
.stat:nth-child(odd){padding-right:16px;}
.stat:nth-child(even){padding-left:16px;border-left:1px solid var(--rule);}
.stat__num{font-family:"Archivo",sans-serif;font-weight:700;font-size:clamp(24px,3.4vw,34px);letter-spacing:-.02em;line-height:1.1;}
.stat__label{font-size:13.5px;color:var(--steel);margin-top:6px;}

/* ---------- 章节标题 ---------- */
.section-head{display:flex;flex-direction:column;gap:14px;margin-bottom:34px;}
.section-head h1,.section-head h2{font-size:clamp(26px,4.2vw,42px);max-width:20ch;}
.section-head__side{color:var(--steel);font-size:14.5px;max-width:34ch;}

/* ---------- 机型列表 ---------- */
.models{border-top:1px solid var(--ink);}
.model{
  display:grid;gap:16px;
  padding:22px 0;border-bottom:1px solid var(--rule);
  text-align:left;
}
.model__media{position:relative;background:var(--panel);border:1px solid var(--rule);}
.model__media img{width:100%;height:auto;aspect-ratio:16/6;object-fit:contain;padding:10px;transition:transform .45s cubic-bezier(.22,.61,.36,1);}
/* 鼠标移到机型图范围，图片放大 8%（允许越出边框）；纯 transform，不增加任何下载量 */
@media (hover:hover){
  .model__media:hover{z-index:4;}
  .model__media:hover img{transform:scale(1.08);}
}
@media (prefers-reduced-motion:reduce){
  .model__media img{transition:none;}
  .model__media:hover img{transform:none;}
}
.model__body{display:flex;flex-direction:column;gap:10px;}
.model__code{
  display:inline-flex;align-items:center;gap:9px;
  font-family:"IBM Plex Mono",monospace;font-size:14px;font-weight:400;
  letter-spacing:.13em;text-transform:uppercase;line-height:1;
  color:var(--paper);background:var(--ink);
  padding:8px 13px 8px 11px;border-radius:2px;
  align-self:flex-start;width:max-content;max-width:100%;
}
.model__code::before{content:"";width:6px;height:6px;background:var(--signal);flex:none;}
/* 详情页首屏：型号牌更醒目一档 */
.p-hero .model__code{font-size:16px;letter-spacing:.15em;padding:10px 16px 10px 13px;margin-bottom:2px;}
.p-hero .model__code::before{width:7px;height:7px;}
.model h3{font-size:clamp(20px,2.4vw,26px);}
.model p{font-size:15.5px;color:var(--ink-2);margin:0;max-width:52ch;}
.model__specs{display:flex;flex-wrap:wrap;gap:8px;}
.chip{
  font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.02em;
  padding:5px 9px;border:1px solid var(--rule);border-radius:2px;color:var(--ink-2);background:var(--panel);
}
.model__more{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--steel);}
.model:hover .model__more{color:var(--ink);}
.model:hover .model__more span{background:var(--ink);}
.model__more span{width:14px;height:1px;background:var(--steel);display:inline-block;}

/* ---------- 工艺流程（真实工序序列，编号有意义） ---------- */
.stages{border-top:1px solid var(--rule);}
.stage{
  display:grid;grid-template-columns:40px minmax(0,1fr);gap:4px 12px;
  padding:16px 0;border-bottom:1px solid var(--rule);
}
.stage__idx{font-family:"IBM Plex Mono",monospace;font-size:12px;color:var(--steel);padding-top:4px;}
.stage__name{font-family:"Archivo",sans-serif;font-size:17px;line-height:1.3;}
.stage__note{grid-column:2;font-size:14px;color:var(--steel);margin-top:0;}

/* ---------- 工厂 / 双栏 ---------- */
.split{display:grid;gap:28px;}
.split__media img{width:100%;height:100%;object-fit:cover;border:1px solid var(--rule);}
.figure{margin:0;}
.figure figcaption{font-size:13px;color:var(--steel);padding-top:9px;}

/* 白底目录图：按“贴在本子上的照片”处理，居中、不拉满整幅 */
.plate-shot{background:#fff;border:1px solid var(--rule);padding:14px;max-width:760px;margin:0 auto;}
.plate-shot img{width:100%;height:auto;object-fit:contain;}
.plate-shot figcaption{border-top:1px solid var(--rule);margin-top:10px;}

/* 封边样品：窄屏单列居中，640px 起两联 */
.samples{display:grid;grid-template-columns:1fr;gap:26px;max-width:400px;margin-inline:auto;}
.samples img{width:100%;height:auto;border:1px solid var(--rule);}
@media (min-width:640px){.samples{grid-template-columns:repeat(2,minmax(0,1fr));max-width:none;align-items:start;}}
/* 只有一张样品图时不要占半栏、贴左边 */
.samples--single{grid-template-columns:1fr;max-width:760px;margin-inline:auto;}

/* 详情页页内锚点条：深墨绿底 + 米白字，吸顶，跳转时给区块留出条高 */
.p-jump{
  border-top:2px solid var(--deep-2);border-bottom:1px solid var(--rule);
  background:var(--jump-bg);position:sticky;top:0;z-index:34;
  box-shadow:0 12px 22px -18px rgba(0,0,0,.45);
}
.p-jump__row{
  display:flex;flex-wrap:nowrap;overflow-x:auto;justify-content:flex-start;
  gap:0;padding:0;-webkit-overflow-scrolling:touch;scrollbar-width:none;
}
.p-jump__row::-webkit-scrollbar{display:none;}
.p-jump a{
  display:block;flex:0 0 auto;
  font-family:"IBM Plex Sans",sans-serif;font-size:14.5px;line-height:1.2;
  color:var(--jump-fg);text-decoration:none;padding:14px 15px;
  border-bottom:2px solid transparent;transition:color .15s ease,border-color .15s ease;
}
.p-jump a:hover,.p-jump a:focus-visible{color:#fff;border-bottom-color:var(--jump-hi);}
section[id]{scroll-margin-top:52px;}

/* ---------- 认证 ---------- */
.cert{display:grid;gap:24px;}
.cert__media img{display:block;width:100%;height:auto;border:1px solid var(--rule);background:#fff;padding:8px;}
.cert__media .figure{max-width:380px;}
/* 证书/文件：点开看大图 */
.doc{display:block;position:relative;}
.doc__hint{
  position:absolute;right:14px;bottom:14px;
  font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.04em;
  background:var(--deep);color:#eef1ef;padding:5px 7px;
}
.doc:hover .doc__hint{background:var(--signal);}
.cert__list{list-style:none;margin:0;padding:0;border-top:1px solid var(--rule);}
.cert__list li{display:grid;grid-template-columns:1fr;gap:4px;padding:14px 0;border-bottom:1px solid var(--rule);}
.cert__list strong{font-family:"Archivo",sans-serif;font-size:16px;font-weight:700;}
.cert__list span{font-size:13.5px;color:var(--steel);}

/* ---------- 铭牌（机器的参数铭牌，站点的签名元素） ---------- */
.plate{
  background:var(--deep);
  color:#e9eeec;
  padding:22px 20px;
  border-radius:2px;
  position:relative;
}
.plate::after{
  content:"";position:absolute;inset:6px;border:1px solid rgba(233,238,236,.22);border-radius:1px;pointer-events:none;
}
.plate__head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid rgba(233,238,236,.22);}
.plate__code{font-family:"IBM Plex Mono",monospace;font-size:13px;letter-spacing:.08em;}
.plate__make{font-size:11.5px;letter-spacing:.16em;color:#93a7a4;font-family:"IBM Plex Mono",monospace;}
.plate__grid{display:grid;grid-template-columns:1fr 1fr;gap:14px 18px;}
.plate__field{display:flex;flex-direction:column;gap:3px;}
.plate__k{font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.1em;color:#93a7a4;}
.plate__v{font-family:"IBM Plex Mono",monospace;font-size:15px;line-height:1.35;color:#f3f6f4;}

/* ---------- 规格表 ---------- */
.spec-wrap{border-top:1px solid var(--ink);}
table.spec{width:100%;border-collapse:collapse;table-layout:fixed;}
table.spec th,table.spec td{
  text-align:left;vertical-align:top;
  padding:12px 10px 12px 0;border-bottom:1px solid var(--rule);
  font-size:14.5px;
}
table.spec th{
  font-family:"IBM Plex Mono",monospace;font-weight:400;font-size:12px;letter-spacing:.06em;
  color:var(--steel);text-transform:uppercase;padding-top:14px;
}
table.spec td:first-child{width:52%;}
table.spec td.val{font-family:"IBM Plex Mono",monospace;font-size:14px;}

/* ---------- 特性条目 ---------- */
.features{margin:0;padding:0;list-style:none;border-top:1px solid var(--rule);}
.feature{padding:20px 0;border-bottom:1px solid var(--rule);display:grid;gap:8px;}
.feature__name{font-family:"Archivo",sans-serif;font-size:18px;}
.feature__text{font-size:15px;color:var(--steel);max-width:64ch;}

/* ---------- 市场 ---------- */
.markets{display:grid;grid-template-columns:1fr;border-top:1px solid var(--rule);}
.market{padding:12px 0;border-bottom:1px solid var(--rule);font-size:14.5px;display:flex;justify-content:space-between;gap:10px;}
.market .mono{color:var(--steel);font-size:12px;}

/* ---------- CTA 条 ---------- */
.cta{padding:48px 0;}
.cta__inner{display:grid;gap:24px;}
.cta h2{font-size:clamp(26px,3.6vw,38px);max-width:24ch;}
.cta__actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
.cta__alt{font-size:14px;color:#b7c5c3;}

/* ---------- 表单 ---------- */
.form{border-top:1px solid var(--ink);padding-top:24px;}
.field{margin-bottom:16px;display:flex;flex-direction:column;gap:6px;}
.field label{font-family:"IBM Plex Mono",monospace;font-size:11.5px;letter-spacing:.08em;color:var(--steel);text-transform:uppercase;}
.field input,.field select,.field textarea{
  width:100%;padding:12px 12px;border:1px solid var(--rule);border-radius:2px;
  background:var(--panel);font-size:16px;line-height:1.4;
}
.field input:hover,.field select:hover,.field textarea:hover{border-color:var(--steel);}
.field textarea{min-height:120px;resize:vertical;}
.field .hint{font-size:12.5px;color:var(--steel);}
.field-row{display:grid;gap:0;grid-template-columns:1fr;}
.form__foot{display:flex;flex-direction:column;gap:12px;margin-top:20px;}
.form__note{font-size:13px;color:var(--steel);}
.hp{position:absolute;left:-9999px;}

/* ---------- 联系方式卡 ---------- */
.contact-card{border-top:1px solid var(--rule);}
.contact-row{display:grid;gap:4px;padding:14px 0;border-bottom:1px solid var(--rule);}
.contact-row .tag{margin-bottom:2px;}
.contact-row a,.contact-row strong{font-size:16px;word-break:break-word;}
.contact-row a:hover{color:var(--signal);}
.qr-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:20px;}
.qr{display:flex;flex-direction:column;gap:8px;}
.qr img{border:1px solid var(--rule);background:#fff;padding:6px;width:100%;height:auto;}
.qr span{font-size:12.5px;color:var(--steel);}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;padding:14px 0;font-size:12.5px;color:var(--steel);}
.crumb a:hover{color:var(--ink);}
.crumb .sep{color:var(--rule);}

/* ---------- 产品页头部 ---------- */
.p-hero{padding:8px 0 0;}
.p-hero h1{font-size:clamp(27px,4.6vw,44px);margin-bottom:10px;}
.p-hero__claim{font-size:clamp(16px,1.7vw,19px);color:var(--ink-2);max-width:56ch;}
.p-hero__media{margin:26px 0 0;background:var(--panel);border:1px solid var(--rule);}
.p-media{padding-top:26px;}
.p-hero__media img{width:100%;height:auto;aspect-ratio:16/7;object-fit:contain;padding:16px;}
/* 超长整机（13 米这类）不要塞进 16:7 的框里留一大片白，按原比例给高度 */
.p-hero__media--wide img{aspect-ratio:auto;}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink);color:#d9d7d0;padding:40px 0 26px;font-size:14px;}
.footer a{color:#d9d7d0;}
.footer a:hover{color:#fff;}
.footer__top{display:grid;gap:26px;padding-bottom:26px;border-bottom:1px solid #343a3e;}
.footer__brand .brand__word{color:#fff;}
.footer__brand p{color:#9aa2a6;max-width:34ch;margin-top:12px;font-size:13.5px;}
.footer__col h4{font-family:"IBM Plex Mono",monospace;font-size:11.5px;letter-spacing:.1em;color:#9aa2a6;text-transform:uppercase;margin-bottom:12px;font-weight:400;}
.footer__col ul{list-style:none;margin:0;padding:0;display:grid;gap:8px;font-size:14px;}
.footer__legal{display:flex;flex-wrap:wrap;gap:8px 18px;justify-content:space-between;padding-top:18px;font-size:12.5px;color:#8d9599;}

/* ---------- 型号总表：左侧树形索引 + 右侧型号条 ---------- */
.catalog{display:grid;gap:32px;margin-top:28px;}

.tree{border-top:1px solid var(--ink);padding-top:12px;}
.tree__head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:8px;}
.tree__label{font-family:"Archivo",sans-serif;font-size:13px;}
.tree__count{font-family:"IBM Plex Mono",monospace;font-size:10.5px;color:var(--steel);}
.tree__groups{list-style:none;margin:0;padding:0;}
.tree__series{
  display:grid;grid-template-columns:34px minmax(0,1fr);
  grid-template-areas:"digit name" "digit meta";
  align-items:baseline;gap:1px 8px;
  padding:9px 18px 9px 0;border-bottom:1px solid var(--rule);
  list-style:none;cursor:pointer;position:relative;
}
/* 系列行现在是 details 的 summary：去掉原生三角，改用右侧的 + / – 记号 */
.tree__series::-webkit-details-marker{display:none;}
.tree__series::marker{content:"";}
.tree__series::after{
  content:"+";position:absolute;right:0;top:8px;
  font-family:"IBM Plex Mono",monospace;font-size:12px;line-height:1;color:var(--steel);
}
.tree__branch[open] > .tree__series::after{content:"–";}
.tree__series:hover::after{color:var(--signal);}
.tree__series:focus-visible{outline:2px solid var(--signal);outline-offset:2px;}
.tree__digit{grid-area:digit;align-self:start;font-family:"IBM Plex Mono",monospace;font-size:12px;color:var(--signal);}
.tree__name{grid-area:name;min-width:0;font-size:14px;color:var(--ink);overflow-wrap:anywhere;transition:color .15s ease;}
.tree__meta{grid-area:meta;min-width:0;font-family:"IBM Plex Mono",monospace;font-size:10.5px;color:var(--steel);}
.tree__series:hover .tree__name{color:var(--signal);}
.tree__models{list-style:none;margin:3px 0 10px;padding:0 0 0 34px;display:grid;}
.tree__models a{
  display:block;padding:4px 0;
  font-family:"IBM Plex Mono",monospace;font-size:11.5px;color:#3f4b49;
  overflow-wrap:anywhere;
}
.tree__models a:hover{color:var(--signal);}
.tree__note{font-size:11.5px;color:var(--steel);margin:12px 0 0;line-height:1.5;}

.series + .series{margin-top:40px;}
.series__head{
  display:grid;grid-template-columns:auto minmax(0,1fr);gap:2px 14px;align-items:baseline;
  border-top:2px solid var(--ink);padding-top:12px;margin-bottom:4px;
}
.series__digit{font-family:"Archivo",sans-serif;font-weight:700;font-size:30px;line-height:1;color:var(--deep);}
.series__title{font-size:18px;font-weight:400;margin:0;}
.series__note{grid-column:2;font-size:13.5px;color:var(--steel);max-width:60ch;margin:4px 0 0;line-height:1.5;}

.mrow{border-top:1px solid var(--rule);padding:15px 0 14px;}
.mrow__top{display:flex;justify-content:space-between;align-items:flex-start;gap:10px 18px;flex-wrap:wrap;}
.mrow__code{
  font-family:"IBM Plex Mono",monospace;font-size:18px;line-height:1.3;font-weight:400;
  margin:0;letter-spacing:-.01em;
}
.mrow__code a{color:var(--ink);}
.mrow__code a:hover{color:var(--signal);}
.mrow__type{font-size:13.5px;color:#3f4b49;margin:3px 0 0;}
.mrow__cta{
  font-family:"IBM Plex Mono",monospace;font-size:11px;line-height:1;
  padding:9px 10px;border:1px solid var(--rule);border-radius:2px;color:var(--ink);
  white-space:nowrap;transition:border-color .15s ease,color .15s ease;
}
.mrow__cta:hover{border-color:var(--signal);color:var(--signal);}
.mrow__specs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 14px;margin:13px 0 0;}
.mrow__cell dt{font-family:"IBM Plex Mono",monospace;font-size:10px;color:var(--steel);}
.mrow__cell dd{margin:2px 0 0;font-family:"IBM Plex Mono",monospace;font-size:12.5px;color:var(--ink);line-height:1.4;}

/* ---------- 响应式 ---------- */
@media (max-width:899px){
  /* 树形索引改用 details 后不再强制隐藏型号列表：点开系列即可展开 */
  .tree__meta{display:none;}
  .tree__groups{display:grid;grid-template-columns:1fr 1fr;gap:0 18px;}
  .tree__note{display:none;}
}

@media (max-width:639px){
  /* 窄屏单列，展开的型号列表占满宽度，避免横向溢出 */
  .tree__groups{grid-template-columns:1fr;}
  .tree__models{padding:0 0 0 22px;}
}

@media (min-width:640px){
  :root{--gut:28px;}
  .mrow__specs{grid-template-columns:repeat(3,minmax(0,1fr));}
  .field-row{grid-template-columns:1fr 1fr;gap:16px;}
  .stats{grid-template-columns:repeat(4,1fr);}
  .stat{border-left:1px solid var(--rule);}
  .stat:nth-child(1){border-left:0;padding-left:0;}
  .stat{padding:22px 16px 6px;}
  .stat:nth-child(odd),.stat:nth-child(even){padding-left:16px;padding-right:16px;}
  .stat:nth-child(1){padding-left:0;}
  .markets{grid-template-columns:repeat(3,1fr);gap:0 24px;}
  .cert__list li{grid-template-columns:1.1fr 1fr;gap:12px;align-items:baseline;}
}

@media (min-width:900px){
  :root{--gut:40px;}
  body{font-size:17px;}
  .header__inner{height:76px;}
  .nav{display:flex;align-items:center;}
  .header .header__cta{display:inline-flex;min-height:42px;padding:9px 18px;font-size:14px;}
  .menu-btn{display:none;}
  .drawer{display:none !important;}
  .section{padding:80px 0;}
  .section--tight{padding:56px 0;}
  .hero{padding:56px 0 0;}
  .model{grid-template-columns:380px 1fr;gap:32px;padding:26px 0;align-items:start;}
  .model__body{flex-direction:row;flex-wrap:wrap;align-items:flex-start;gap:10px 24px;}
  .model__body > *{width:100%;}
  .model__body > .model__code{width:auto;}
  .model h3,.model p{max-width:60ch;}
  .model__more{margin-top:2px;}
  .stage{grid-template-columns:52px 1fr 1fr;gap:18px;padding:18px 0;}
  .stage__note{grid-column:auto;margin-top:0;padding-top:3px;}
  .split{grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
  .split--wide-left{grid-template-columns:1.15fr 1fr;}
  .cert{grid-template-columns:.8fr 1.2fr;gap:48px;align-items:start;}
  .section-head{flex-direction:row;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:44px;}
  .section-head__side{text-align:right;max-width:32ch;padding-bottom:6px;}
  .cta__inner{grid-template-columns:1.15fr 1fr;align-items:center;gap:56px;}
  .cta__actions{justify-content:flex-end;}
  .qr-grid{grid-template-columns:1fr 1fr;}
  .contact-layout{display:grid;grid-template-columns:1.25fr .75fr;gap:56px;}
  .p-hero{padding:20px 0 0;}
  .p-hero__media{margin-top:34px;}
  /* 详情页锚点条：桌面居中横排，字号放大 */
  .p-jump__row{justify-content:center;overflow:visible;gap:2px 6px;}
  .p-jump a{font-size:17px;padding:18px 30px;}
  section[id]{scroll-margin-top:64px;}
  .feature{grid-template-columns:260px 1fr;gap:32px;padding:22px 0;}
  /* 型号总表：索引固定在左，型号条在右 */
  .catalog{grid-template-columns:236px minmax(0,1fr);gap:0 54px;align-items:start;margin-top:34px;}
  .tree{position:sticky;top:92px;max-height:calc(100vh - 116px);overflow-y:auto;padding-right:12px;}
  .catalog__main{min-width:0;}
  .mrow{padding:18px 0 16px;}
  .mrow__code{font-size:19px;}
  .mrow__specs{grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;margin-top:14px;}
}

@media (min-width:1160px){
  /* 导航增至 4 项后，900–1159px 放不下 brand__sub，副标题自 1160px 起才显示 */
  .brand__sub{display:inline-block;}
  /* 首屏：文字在左，整机照片向右侧出血 */
  .hero{position:relative;}
  .hero__grid{display:grid;grid-template-columns:minmax(0,5.2fr) minmax(0,6.8fr);gap:48px;align-items:center;}
  .hero__media{
    margin:0 0 0 0;
    margin-right:calc((100vw - var(--max)) / -2 - 40px);
    width:auto;
  }
  .hero__media img{border-right:0;}
  .hero__caption{padding-right:8px;}
  .footer__top{grid-template-columns:1.4fr .7fr .7fr .9fr;gap:40px;}
  .models .model{grid-template-columns:480px 1fr;gap:48px;}
}

/* ---------- 动效与无障碍 ---------- */
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
}
@media print{
  .header,.footer,.cta,.hero__actions,.form{display:none;}
  body{background:#fff;}
}