/* https://cladwoodwindow.com site.css v11: tokens + _engine/css_base.css + override（由 _build/build.py 拼装，勿手改） */
:root{--bg:#F7F7F5;--bg-2:#EFEFEB;--surface:#FFFFFF;--ink:#1B1F24;--text:#3A4048;--muted:#6B727B;--line:#DDDED8;--accent:#1F5F3F;--accent-hi:#174B32;--on-accent:#FFFFFF;--footer-bg:#1B1F24;--footer-tx:#C9CDD2;--r:0px;--r-sm:0px;--shadow:none;--font-display:'Sora',system-ui,sans-serif;--font-body:'Source Sans 3',system-ui,sans-serif;--font-mono:'JetBrains Mono',ui-monospace,Menlo,monospace;--container:1200px}
/* ===== 万加站群 结构性基础 CSS（不含颜色/字体值；全部走 :root 变量，由各站 tokens 注入） =====
   变量契约（每站 data.TOKENS 必须提供）：
   --bg --bg-2 --surface --ink --text --muted --line --accent --accent-hi --on-accent
   --footer-bg --footer-tx --r --r-sm --font-display --font-body --font-mono --shadow
   结构默认（可被站点覆盖）：--container --ease --nav-h --section-y */
:root{
  --container:1180px;
  --ease:cubic-bezier(.16,1,.3,1);
  --nav-h:72px;
  --section-y:88px;
  --dur:.55s;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font-body);background:var(--bg);color:var(--text);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,video{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-decoration:none}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--ink);line-height:1.15;letter-spacing:-.01em;font-weight:700}
h1{font-size:clamp(2rem,4.4vw,3.3rem)}
h2{font-size:clamp(1.5rem,2.8vw,2.15rem)}
h3{font-size:1.12rem}
h4{font-size:.95rem}
p+p{margin-top:1em}
.mono,code,kbd{font-family:var(--font-mono)}
.wrap{max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:var(--section-y) 0}
.section--tint{background:var(--bg-2)}
.section-head{max-width:680px;margin-bottom:44px}
.section-head p{margin-top:12px;color:var(--muted)}
.eyebrow{display:inline-block;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:14px}
.lead{font-size:1.1rem;color:var(--text);max-width:36rem}

/* ---------- header / nav（桌面完整单行，汉堡只在 <768px） ---------- */
.site-header{position:sticky;top:0;z-index:50;background:var(--bg);border-bottom:1px solid var(--line)}
.nav-bar{display:flex;align-items:center;gap:28px;height:var(--nav-h);max-width:var(--container);margin:0 auto;padding:0 24px}
.brand{display:flex;align-items:baseline;gap:8px;font-family:var(--font-display);font-weight:700;color:var(--ink);font-size:1.15rem;white-space:nowrap;min-width:0}
.brand small{font-family:var(--font-mono);font-weight:500;color:var(--accent);font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;max-width:280px;overflow:hidden;text-overflow:ellipsis}
@media (max-width:1023px){.brand small{display:none}}
.nav-links{display:flex;align-items:center;gap:22px;margin-left:auto;list-style:none}
.nav-links>li>a{color:var(--ink);font-weight:600;font-size:.88rem;white-space:nowrap;padding:8px 0;display:inline-block}
.nav-links a[aria-current="page"]{color:var(--accent)}
.nav-cta-item{margin-left:6px}
.nav-links .nav-cta{padding:10px 18px;font-size:.86rem}
.has-sub{position:relative}
.has-sub>a{display:inline-flex;align-items:center;gap:6px}
.has-sub>a::after{content:"";width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;border-top:4.5px solid currentColor;opacity:.55;transition:transform .15s var(--ease)}
.has-sub:hover>a::after,.has-sub:focus-within>a::after{transform:rotate(180deg)}
.sub-menu{position:absolute;top:100%;left:-14px;min-width:230px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);padding:8px 0;list-style:none;opacity:0;visibility:hidden;transform:translateY(6px);transition:opacity .14s var(--ease),transform .14s var(--ease),visibility .14s;z-index:60}
.has-sub:hover .sub-menu,.has-sub:focus-within .sub-menu{opacity:1;visibility:visible;transform:translateY(0)}
.sub-menu a{display:block;padding:9px 18px;font-weight:500;font-size:.86rem;white-space:nowrap;color:var(--ink)}
.nav-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:var(--r-sm);padding:9px 10px;cursor:pointer;color:var(--ink)}
.nav-toggle svg{display:block}
@media (max-width:767px){
  .nav-bar{gap:14px}
  .nav-toggle{display:block}
  .nav-links{display:none;position:absolute;top:var(--nav-h);left:0;right:0;background:var(--bg);border-bottom:1px solid var(--line);flex-direction:column;align-items:flex-start;padding:18px 24px 22px;gap:12px;max-height:calc(100vh - var(--nav-h));overflow-y:auto}
  .nav-links.is-open{display:flex}
  .nav-links>li{width:100%}
  .sub-menu{position:static;opacity:1;visibility:visible;transform:none;border:0;box-shadow:none;background:transparent;padding:4px 0 0 14px;min-width:0}
  .sub-menu a{padding:7px 0;color:var(--muted)}
  .has-sub>a::after{display:none}
  .nav-cta-item{margin:8px 0 0}
}

/* ---------- buttons（按压 scale .97，hover 门控） ---------- */
.btn{display:inline-block;padding:13px 24px;border-radius:var(--r);font-family:var(--font-body);font-weight:700;font-size:.95rem;line-height:1.2;border:1.5px solid transparent;cursor:pointer;transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .12s var(--ease)}
.btn-lg{padding:16px 30px;font-size:1rem}
.btn-primary{background:var(--accent);color:var(--on-accent);border-color:var(--accent)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn:active{transform:scale(.97)}
@media (hover:hover) and (pointer:fine){
  .btn-primary:hover{background:var(--accent-hi);border-color:var(--accent-hi);color:var(--on-accent)}
  .btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
  .nav-links>li>a:hover,.sub-menu a:hover{color:var(--accent)}
  a:hover{color:var(--accent-hi)}
}

/* ---------- hero 五种版式 ---------- */
.hero{position:relative;overflow:hidden}
.hero-grid{display:grid;gap:52px;align-items:center;padding:72px 24px 84px}
.hero-copy{min-width:0}
.hero-copy .lead{margin:20px 0 30px}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap}
.hero-media{position:relative;min-width:0}
.hero-img{width:100%;border-radius:var(--r)}
/* split-left：文左图右 55/45 */
.hero--split-left .hero-grid{grid-template-columns:55fr 45fr}
/* split-right：图左文右（S1 镜像） */
.hero--split-right .hero-grid{grid-template-columns:45fr 55fr}
/* full：全宽图/视频 + scrim，文字左下 */
.hero--full{min-height:min(82vh,760px);display:flex;align-items:flex-end;color:var(--on-accent)}
.hero--full .hero-media{position:absolute;inset:0}
.hero--full .hero-bg,.hero--full .hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:0}
.hero--full .hero-video{opacity:0;transition:opacity 1.2s var(--ease)}
.hero--full .hero-video.is-ready{opacity:1}
.hero--full .hero-scrim{position:absolute;inset:0;background:linear-gradient(to top,rgba(0,0,0,.72) 0%,rgba(0,0,0,.35) 45%,rgba(0,0,0,.05) 100%)}
.hero--full .hero-grid{position:relative;grid-template-columns:minmax(0,720px);padding-bottom:72px;width:100%;max-width:var(--container);margin:0 auto}
.hero--full h1,.hero--full .lead{color:#fff}
.hero--full .eyebrow{color:#fff;opacity:.85}
/* asym：标题跨 8 列 + 右侧规格卡 */
.hero--asym .hero-grid{grid-template-columns:8fr 4fr;align-items:start}
.hero--asym h1{font-size:clamp(2.4rem,5.6vw,4.4rem);letter-spacing:-.03em}
.hero-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px 24px;box-shadow:var(--shadow)}
.hero-card dl{display:grid;gap:12px}
.hero-card dl>div{display:flex;justify-content:space-between;gap:16px;border-bottom:1px solid var(--line);padding-bottom:10px}
.hero-card dt{color:var(--muted);font-size:.82rem}
.hero-card dd{font-family:var(--font-mono);color:var(--ink);font-size:.9rem;text-align:right}
.hero--asym .hero-media{max-width:var(--container);margin:0 auto;padding:0 24px 64px}
/* center：文字居中在上，大图（门型竖向）居中，两侧留白 */
.hero--center .hero-grid{grid-template-columns:1fr;text-align:center;justify-items:center;gap:40px}
.hero--center .hero-copy{max-width:760px}
.hero--center .lead{margin-inline:auto}
.hero--center .hero-ctas{justify-content:center}
.hero--center .hero-media{width:min(100%,560px)}
.hero--center .hero-img{aspect-ratio:3/4;object-fit:cover}
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr!important;gap:32px;padding:44px 24px 56px}
  .hero--split-right .hero-media{order:2}
  .hero--asym h1{font-size:clamp(2rem,8vw,3rem)}
  .hero--full{min-height:70vh}
}

/* Split Text（首页 H1 一处） */
html.js [data-split] .st-w{display:inline-block;overflow:hidden;vertical-align:top;padding-bottom:.08em;margin-bottom:-.08em}
html.js [data-split] .st-i{display:inline-block;transform:translateY(110%);opacity:0;transition:transform .7s var(--ease),opacity .5s var(--ease)}
html.js [data-split].is-split .st-i{transform:translateY(0);opacity:1}

/* ---------- page-head / breadcrumb ---------- */
.page-head{padding:56px 0 8px}
.page-head .lead{margin-top:14px}
.breadcrumb{font-size:.8rem;color:var(--muted);padding-top:20px}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px}
.breadcrumb li+li::before{content:"/";margin-right:6px;opacity:.5}
.breadcrumb a{color:var(--muted)}

/* ---------- grids / cards ---------- */
.grid{display:grid;gap:26px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:900px){.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:600px){.grid-2,.grid-4{grid-template-columns:1fr}}
.card{display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;min-width:0;color:inherit;position:relative;transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease)}
.card--feature{padding:26px 26px 28px}
.card--feature h3{margin:14px 0 8px}
.card--feature p{font-size:.92rem;color:var(--muted)}
.ico-wrap{display:inline-flex;width:44px;height:44px;align-items:center;justify-content:center;border-radius:var(--r-sm);background:var(--bg-2);color:var(--accent)}
.card-img{width:100%;aspect-ratio:4/3;object-fit:cover;background:var(--bg-2)}
.card--door .card-img{aspect-ratio:3/4}
.card-body{padding:20px 22px 24px}
.card-body h3{margin-bottom:8px}
.card-body p{font-size:.9rem;color:var(--muted)}
.card .tag{display:inline-block;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);margin-bottom:8px}
.card .more{display:inline-block;margin-top:14px;font-weight:700;font-size:.86rem;color:var(--accent)}
@media (hover:hover) and (pointer:fine){
  a.card:hover{transform:translateY(-3px);border-color:var(--accent);box-shadow:var(--shadow)}
}
/* Spotlight 描边（S2 品类卡；--mx/--my 由 site.js 写入） */
[data-spotlight]{--mx:50%;--my:50%}
@media (hover:hover) and (pointer:fine){
  [data-spotlight]::before{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;opacity:0;transition:opacity .3s var(--ease);background:radial-gradient(360px circle at var(--mx) var(--my),color-mix(in srgb,var(--accent) 18%,transparent),transparent 60%)}
  [data-spotlight]:hover::before{opacity:1}
}

/* ---------- two-col ---------- */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.two-col--solo{grid-template-columns:minmax(0,760px)}
.two-col>*{min-width:0}
.two-col-img{width:100%;border-radius:var(--r)}
.two-col-text h2{margin-bottom:16px}
.prose-cta{margin-top:24px}
@media (max-width:900px){.two-col{grid-template-columns:1fr;gap:32px}}

/* ---------- 参数表 ---------- */
.table-scroll{overflow-x:auto;max-width:100%;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
.spec-table{width:100%;border-collapse:collapse;font-size:.9rem;min-width:520px}
.spec-table--pairs{min-width:0;table-layout:fixed}
.spec-table--pairs tbody th{white-space:normal;width:40%;overflow-wrap:anywhere}
.spec-table--pairs td{overflow-wrap:anywhere}
.spec-table th,.spec-table td{text-align:left;padding:12px 16px;border-bottom:1px solid var(--line);vertical-align:top}
.spec-table thead th{color:var(--ink);font-weight:700;background:var(--bg-2);white-space:nowrap;font-size:.82rem;letter-spacing:.02em}
.spec-table tbody th{color:var(--ink);font-weight:600;white-space:nowrap;width:36%}
.spec-table td{font-family:var(--font-mono);font-size:.84rem;color:var(--text)}
.spec-table tbody tr:last-child th,.spec-table tbody tr:last-child td{border-bottom:0}
@media (hover:hover) and (pointer:fine){.spec-table tbody tr:hover td,.spec-table tbody tr:hover th{background:var(--bg-2)}}
.table-note{font-size:.84rem;color:var(--muted);margin-top:12px}

/* ---------- steps ---------- */
.steps{list-style:none;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}
@media (max-width:900px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:600px){.steps{grid-template-columns:1fr}}
.step{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.step-n{display:block;font-family:var(--font-mono);font-size:.78rem;color:var(--accent);margin-bottom:12px}
.step b{display:block;color:var(--ink);margin-bottom:6px;font-family:var(--font-display)}
.step-meta{display:block;font-family:var(--font-mono);font-size:.76rem;color:var(--muted);margin-bottom:6px}
.step p{font-size:.88rem;color:var(--muted)}

/* ---------- stats（Count Up） ---------- */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:26px;padding:34px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat{min-width:0}
.stat b{display:block;font-family:var(--font-mono);font-size:clamp(1.5rem,5vw,2rem);color:var(--ink);font-weight:600;letter-spacing:-.02em;overflow-wrap:anywhere}
.stat span{font-size:.85rem;color:var(--muted)}
@media (max-width:767px){.stats{grid-template-columns:repeat(2,minmax(0,1fr))}}

/* ---------- faq ---------- */
.faq{max-width:780px}
.faq details{border-bottom:1px solid var(--line);padding:16px 0}
.faq summary{font-weight:700;color:var(--ink);cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px;font-family:var(--font-display)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--accent);font-weight:700;flex:none}
.faq details[open] summary::after{content:"\2212"}
.faq-a{margin-top:10px;font-size:.94rem;color:var(--text)}
.faq-a p+p{margin-top:.6em}

/* ---------- cta band ---------- */
.cta-band{background:var(--ink);color:var(--bg);border-radius:var(--r);padding:52px;display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap}
.cta-band h2{color:inherit}
.cta-band p{opacity:.8;margin-top:8px;max-width:36rem}

/* ---------- prose / article ---------- */
.prose{max-width:760px}
.prose>*{min-width:0}
.prose h2{margin:40px 0 14px}
.prose h3{margin:28px 0 10px}
.prose p{margin:14px 0}
.prose ul,.prose ol{margin:14px 0 14px 24px}
.prose li{margin:6px 0}
.prose img{border-radius:var(--r);margin:18px 0}
.prose .table-wrap{overflow-x:auto;max-width:100%;margin:18px 0}
.prose table{width:100%;border-collapse:collapse;font-size:.9rem}
.prose th,.prose td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}
.prose th{color:var(--ink)}
.prose .note{background:var(--bg-2);border-left:3px solid var(--accent);padding:14px 18px;font-size:.92rem;margin:18px 0;border-radius:0 var(--r) var(--r) 0}
.post-meta{display:block;font-family:var(--font-mono);font-size:.75rem;color:var(--muted);letter-spacing:.04em;margin-bottom:10px}
.article-sec{padding-top:36px}
.toc{border:1px solid var(--line);border-radius:var(--r);padding:16px 20px;margin:0 0 24px;font-size:.9rem;background:var(--surface)}
.toc b{display:block;color:var(--ink);margin-bottom:8px}
.toc ol{margin:0 0 0 18px}

/* ---------- image band ---------- */
.image-band{display:grid;gap:22px}
.image-band-2{grid-template-columns:1fr 1fr}
@media (max-width:700px){.image-band-2{grid-template-columns:1fr}}
.band-img{width:100%;border-radius:var(--r);aspect-ratio:16/9;object-fit:cover}
.image-band figcaption{font-size:.82rem;color:var(--muted);margin-top:8px}

/* ---------- link list ---------- */
.link-list{list-style:none;display:grid;gap:12px;max-width:820px}
.link-list a{display:block;border:1px solid var(--line);border-radius:var(--r);padding:16px 20px;background:var(--surface);color:var(--ink);transition:border-color .2s var(--ease)}
.link-list b{display:block;font-family:var(--font-display)}
.link-list span{display:block;font-size:.88rem;color:var(--muted);margin-top:4px}
@media (hover:hover) and (pointer:fine){.link-list a:hover{border-color:var(--accent)}}

/* ---------- contact form ---------- */
.contact-layout{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.7fr);gap:48px;align-items:start}
@media (max-width:900px){.contact-layout{grid-template-columns:1fr}}
.contact-form{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:30px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media (max-width:600px){.form-grid{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:6px;min-width:0}
.field--full{grid-column:1/-1}
.field label{font-weight:600;font-size:.85rem;color:var(--ink)}
.field .req{color:var(--accent)}
.field input,.field select,.field textarea{font-family:var(--font-body);font-size:.95rem;padding:12px 14px;border:1px solid var(--line);border-radius:var(--r-sm);background:var(--bg);color:var(--ink);width:100%}
.field .err{display:none;font-size:.78rem;color:#B42318}
.field.is-invalid input,.field.is-invalid select{border-color:#B42318}
.field.is-invalid .err{display:block}
.form-actions{margin-top:22px;display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.form-note{font-size:.82rem;color:var(--muted)}
.form-fallback{margin-top:14px;font-size:.9rem}
.hp{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}
.contact-aside .prose{font-size:.95rem}

/* ---------- footer ---------- */
.site-footer{background:var(--footer-bg);color:var(--footer-tx);margin-top:var(--section-y)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px;padding:60px 0 40px}
@media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.footer-grid{grid-template-columns:1fr}}
.site-footer h4{color:var(--footer-tx);font-size:.9rem;margin-bottom:14px;opacity:.95}
.site-footer ul{list-style:none}
.site-footer li{margin:8px 0;font-size:.88rem}
.site-footer a{color:var(--footer-tx);opacity:.85}
.site-footer p{font-size:.88rem;opacity:.85}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;font-size:.78rem;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;opacity:.8}
@media (hover:hover) and (pointer:fine){.site-footer a:hover{opacity:1;color:var(--footer-tx)}}

/* ---------- reveal（IO 显形；无 JS 直接可见） ---------- */
html.js .reveal{opacity:0;transform:translateY(14px);transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease)}
html.js .reveal.is-visible{opacity:1;transform:none}

/* ---------- reduced motion：一切动效降级 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  html.js .reveal{opacity:1;transform:none;transition:none}
  html.js [data-split] .st-i{transform:none;opacity:1;transition:none}
  .card,.btn,.link-list a,.hero--full .hero-video{transition:none}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important}
}

/* ---------- 移动端兜底 ---------- */
@media (max-width:767px){
  :root{--section-y:60px}
  .cta-band{padding:34px 26px}
  .contact-form{padding:22px}
  .hero-copy .lead{margin:16px 0 22px}
}

/* ===== 站点 override ===== */

/* S1：建筑图纸感。直角、细描边、无阴影、参数走等宽字 */
h1,h2{letter-spacing:-.02em}
.hero-img,.two-col-img,.card-img{border:1px solid var(--line);border-radius:0}
.hero--split-left{border-bottom:1px solid var(--line)}
.hero-copy .lead{font-size:1.05rem}
.card{box-shadow:none}
.section-head h2::before{content:"";display:block;width:36px;height:2px;background:var(--accent);margin-bottom:18px}
.stats{border-top:2px solid var(--ink)}
.stat b{font-size:clamp(1.6rem,5vw,2.3rem)}
.spec-table td{font-size:.82rem}
.nav-links>li>a{font-size:.84rem;letter-spacing:.01em}