:root{--sec:40px;--block:26px;--lead:12px;
  --ink:#0f0f0f; --ink2:#333; --muted:#6b6b6b; --faint:#9a9a9a;
  --line:#e6e2dc; --line2:#f0ede8; --paper:#fff; --sand:#f7f5f1; --ph:#efece7;
  --accent:#c8102e;
  --accent-dark:#9d0c24;
  --accent-soft:#fdf2f4;
  --sans:-apple-system,BlinkMacSystemFont,"SF Pro Text","Helvetica Neue","Segoe UI",Arial,"PingFang SC","Hiragino Sans GB",sans-serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
::selection{background:#17392c;color:#fff}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.65 var(--sans);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;font-feature-settings:"kern" 1,"liga" 1}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.06;letter-spacing:-.032em;text-wrap:balance}
h1{font-size:clamp(40px,5.2vw,66px);letter-spacing:-.042em;line-height:1.02}
h2{font-size:clamp(26px,3vw,38px);margin-top:0}
h3{font-size:19px;letter-spacing:-.02em}
p{margin:0 0 var(--lead)}
b,strong{font-weight:600}
.wrap{max-width:1240px;margin:0 auto;padding:0 28px}
.mono,.kicker{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--faint)}
.kicker{margin-bottom:10px;display:flex;align-items:center;gap:10px}
.kicker:before{content:"";width:20px;height:1px;background:currentColor;opacity:.55;flex:none}
.sub{color:var(--muted);font-size:14.5px;max-width:64ch;line-height:1.6}
.lede{font-size:17.5px;line-height:1.55;color:#3a3a3a;max-width:58ch}
.num{font-variant-numeric:tabular-nums}

/* top bar */
.topbar{border-bottom:1px solid var(--line2);background:var(--sand)}
.topbar .wrap{display:flex;align-items:center;gap:22px;height:34px;font-size:11.5px;color:#5f5f5f}
.topbar span.lbl{font-family:var(--mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--faint)}
.topbar .end{margin-left:auto;display:flex;gap:18px;align-items:center}

/* header */
.site-header{position:sticky;top:0;z-index:40;background:rgba(251,249,245,.92);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--line)}
.hd{display:flex;align-items:center;gap:38px;height:72px}
.logo{font-weight:700;letter-spacing:.26em;font-size:15px;padding:2px 0}
.nav{display:flex;gap:22px;font-size:15px;font-weight:500;color:#1b1815;letter-spacing:-.01em;align-items:center}
.nav @media (max-width:760px){  }
.nav a{padding:8px 0;position:relative;color:#33302c;transition:color .15s}
.nav a:after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--accent);transition:right .22s ease}
.nav a:hover,.nav a.on{color:var(--accent-dark)}
.nav a:hover:after,.nav a.on:after{right:0}
.hd .right{margin-left:auto;display:flex;align-items:center;gap:18px}
.lang{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;color:var(--faint);border:1px solid var(--line);padding:5px 7px}
.burger{display:none;background:none;border:1px solid var(--line);padding:8px 11px;font:inherit;font-size:12px;cursor:pointer}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:9px;background:var(--accent);color:#fff;border:1px solid var(--accent);
  padding:15px 24px;font-size:13.5px;font-weight:600;line-height:1;letter-spacing:.005em;cursor:pointer;
  transition:background .18s,border-color .18s,color .18s,transform .18s}
.btn:hover{background:var(--accent-dark);border-color:var(--accent-dark);transform:translateY(-1px)}

/* 播放按钮：脉冲光环（纯 CSS，尊重 reduced-motion） */
.btn-play{position:relative;overflow:visible}
.btn-play .pico{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:50%;
  background:rgba(255,255,255,.22);font-size:9px;line-height:1;padding-left:1px}
.btn-play::after{content:"";position:absolute;inset:0;border-radius:inherit;border:2px solid var(--accent);
  animation:pulse 2.4s ease-out infinite;pointer-events:none}
@keyframes pulse{0%{opacity:.55;transform:scale(1)}70%{opacity:0;transform:scale(1.09)}100%{opacity:0;transform:scale(1.09)}}
.btn-play:hover::after{animation-play-state:paused;opacity:0}
@media (prefers-reduced-motion:reduce){.btn-play::after{animation:none}}

.btn .ar{transition:transform .18s}
.card-h{font-size:15px;font-weight:500;line-height:1.32;margin:0;display:block;color:#141210;letter-spacing:-.005em}
.cards .card{transition:border-color .18s ease}
.cards .card:hover{border-color:#c3bbae}
.cards .card:hover .card-h{text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.gloss{padding:18px 0;border-bottom:1px solid var(--line)}
.gloss h3{font-size:17px;margin-bottom:6px}
.gloss p{margin:0;color:var(--gray);font-size:15px;line-height:1.65}
.btn:hover .ar{transform:translateX(3px)}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn.ghost:hover{background:var(--ink);border-color:var(--ink);color:#fff}
.btn.small{padding:11px 16px;font-size:12.5px}
.btnrow{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.promise{display:flex;gap:18px;flex-wrap:wrap;font-size:11.5px;color:var(--muted);margin-top:14px;letter-spacing:.015em}
.promise span{display:inline-flex;align-items:center;gap:6px}
.promise span:before{content:"";width:3px;height:3px;background:var(--accent);border-radius:50%;flex:none}

/* sections */
.section{padding-top:var(--sec);padding-bottom:var(--sec);border-top:1px solid var(--line2)}
.section.tight{padding-top:64px;padding-bottom:64px}
.shead{display:grid;grid-template-columns:1fr 320px;gap:28px;align-items:end;margin-bottom:22px}
.shead .hint{font-size:12px;color:var(--muted);border-left:1px solid var(--line);padding-left:18px;line-height:1.6}

/* placeholders */
.ph{position:relative;background:var(--ph);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  overflow:hidden}
.ph.sq{height:auto!important;aspect-ratio:1/1}
.ph picture{display:block;width:100%;height:100%}
.ph img{width:100%;height:100%;object-fit:contain;display:block;background:#fff}
.ph.contain img{object-fit:contain;background:#fff}
.ph.doc{border-color:var(--line);background:#fff}
.ph.doc img{object-fit:contain;background:#fff}
.ph span{font-family:var(--mono);font-size:10px;letter-spacing:.13em;text-transform:uppercase;color:#9c968d;text-align:center;padding:10px;max-width:88%}

/* hero */
.hero{padding-top:44px;padding-bottom:38px}
.hero-grid{display:grid;grid-template-columns:1.22fr .78fr;gap:72px;align-items:start}
.hero h1{max-width:16ch;margin:0 0 22px}
.hero .lede{max-width:46ch}
.spec-panel{border:1px solid var(--line);padding:26px 26px 22px;background:#fff}
.spec-panel .cap{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--faint);
  padding-bottom:12px;border-bottom:1px solid var(--line);margin-bottom:4px}
.spec-row{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding:11px 0;border-bottom:1px solid var(--line2)}
.spec-row:last-of-type{border-bottom:0}
.spec-row dt{font-size:12px;color:var(--muted);margin:0}
.spec-row dd{margin:0;font-family:var(--mono);font-size:12px;letter-spacing:.02em;color:var(--ink);text-align:right}
.spec-panel .note{font-size:11.5px;color:var(--muted);margin:14px 0 0;line-height:1.55}
.spec-panel .btn{margin-top:16px;width:100%;justify-content:center}


/* --- 视觉升级：hero 拼贴与排版 --- */
.hero h1{font-size:clamp(34px,4.4vw,58px);line-height:1.02;letter-spacing:-.035em;max-width:18ch}
.hero-mosaic{display:grid;grid-template-columns:1.35fr 1fr;grid-template-rows:auto auto;gap:10px}
.hero-mosaic .hm-a{grid-row:1 / span 2}
.hero-mosaic .ph{border-radius:6px;overflow:hidden}
.hero-mosaic .cap{grid-column:1 / -1;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--faint);padding-top:2px}
.cards .card{transition:transform .18s ease, box-shadow .18s ease}
.cards .card:hover{transform:translateY(-3px);box-shadow:0 10px 24px rgba(15,15,15,.07)}
@media (max-width:860px){.hero-mosaic{grid-template-columns:1fr 1fr}.hero-mosaic .hm-a{grid-row:auto}}

/* --- 视觉：垂直节奏与标题层级 --- */
.wrap h2{margin:56px 0 16px;line-height:1.12;letter-spacing:-.02em}
.wrap h2:first-child{margin-top:0}
.wrap h3{margin:26px 0 8px;font-size:18px;font-weight:600;line-height:1.3;letter-spacing:-.01em}
.wrap p{margin:0 0 var(--lead)}
.wrap p + h3{margin-top:30px}
.wrap .kicker{position:relative;padding-left:14px;margin-bottom:10px;color:var(--accent-dark);letter-spacing:.14em}
.wrap .kicker::before{content:"";position:absolute;left:0;top:.42em;width:6px;height:6px;background:var(--accent);border-radius:50%}
.guide-body > h2, .section h2{margin-top:28px}
.t td, .t th{padding:13px 10px}
/* 产品图统一画框 */
.pdp .gal .ph{background:var(--sand);border:1px solid var(--line);border-radius:6px}
.pdp .gal .ph img{object-fit:contain;width:100%;height:100%;background:#fff}
/* 分区留白收紧但一致 */
.section{padding:var(--sec) 0}
.section.tight{padding:44px 0}
@media (max-width:760px){.wrap h2{margin-top:26px}.section{padding:calc(var(--sec)*.7) 0}}

/* 可读性：行宽与标题统一 */
.wrap h2{font-size:clamp(24px,2.4vw,30px)}
.wrap p,.wrap li,.wrap .sub{max-width:74ch}
.guide-body p,.guide-body li{max-width:72ch}
.t p,.t td p{max-width:none}

/* --- 视觉层次：底色、卡片、微动效 --- */
:root{--sand2:#f3efe8;--card:#ffffff}
body{background:linear-gradient(180deg,#fbf9f5 0,#ffffff 520px)}
/* 卡片：统一画框 + 图片底 + 悬浮 */

/* 统一产品图画框：同比例 + 浅底 + 内留白 */
.cards .card .ph,.pdp .gal .ph{aspect-ratio:1/1;height:auto!important;background:var(--sand2)}
.cards .card .ph picture,.pdp .gal .ph picture{display:block;width:100%;height:100%}
.cards .card .ph img,.pdp .gal .ph img{width:100%;height:100%;object-fit:contain;display:block;background:#fff}
.cards .card:hover .ph img{transform:scale(1.03)}
.cards .card{background:var(--card);border:1px solid var(--line);border-radius:8px;overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
.cards .card .ph{background:var(--sand2);margin:0}
.cards .card img{transition:transform .5s ease}
.cards .card:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(15,15,15,.09);border-color:#d8d2c7}
.cards .card:hover img{transform:scale(1.035)}
.cards .card b,.cards .card .card-h{padding:0 14px}
.cards .card .kv{padding:0 14px}
.cards .card .more{padding:0 14px 14px}
/* 交替底色分区 */
.section.tint{background:linear-gradient(180deg,#f7f4ee,#fff)}
/* 标题：红短线 */
.hero h1::after{content:"";display:block;width:64px;height:3px;background:var(--accent);margin:22px 0 0}
/* 滚动淡入 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}.cards .card img{transition:none}}

/* 深色数据带 */
.stats-dark{background:#141210;border-top:0;margin:56px 0 0;padding:26px 30px;border-radius:10px}
.stats-dark div{border-left:1px solid rgba(255,255,255,.14);padding:6px 0 6px 22px}
.stats-dark div:first-child{border-left:0;padding-left:0}
.stats-dark b{color:#fff}
.stats-dark span{color:rgba(255,255,255,.62)}

/* 指南索引：去掉重复 GUIDE 标签，卡片更紧凑 */
.guide-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:28px 0 56px}
.guide-tile{display:flex;flex-direction:column;gap:8px;padding:20px 20px 16px;background:#fff;
  border:1px solid var(--line);border-radius:8px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s}
.guide-tile h3{font-size:17px;line-height:1.3;margin:0;letter-spacing:-.01em}
.guide-tile p{font-size:13px;line-height:1.55;color:var(--muted);margin:0;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.guide-tile .go{font-size:12.5px;color:var(--muted);margin-top:auto}
.guide-tile:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(15,15,15,.06);border-color:#d9d3c8}
.guide-tile:hover .go{color:var(--accent)}
@media (max-width:900px){.guide-list{grid-template-columns:1fr 1fr}}
@media (max-width:620px){.guide-list{grid-template-columns:1fr}}

/* 新闻索引：去掉重复 Read 链接，列表更紧凑 */
.post-list{margin:26px 0 56px}
.post-item{display:grid;grid-template-columns:120px 1fr;gap:22px;padding:15px 0;border-bottom:1px solid var(--line)}
.post-item .date{font-size:12.5px;color:var(--faint);letter-spacing:.04em;padding-top:3px}
.post-item h2{font-size:20px;line-height:1.25;margin:0 0 6px;letter-spacing:-.01em}
.post-item h2 a{color:var(--ink)}
.post-item h2 a:hover{color:var(--accent-dark)}
.post-item p{font-size:14px;line-height:1.6;color:var(--muted);margin:0;max-width:78ch}
@media (max-width:700px){.post-item{grid-template-columns:1fr;gap:6px}}

.stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);margin:44px 0 0}
.stats div{padding:18px 0 0 22px;border-left:1px solid var(--line)}
.stats div:first-child{border-left:0;padding-left:0}
.stats b{display:block;font-size:30px;font-weight:600;letter-spacing:-.035em;line-height:1.05;font-variant-numeric:tabular-nums}
.stats span{display:block;font-family:var(--mono);font-size:10px;letter-spacing:.13em;text-transform:uppercase;color:var(--faint);margin-top:7px}

/* strips & grids */
.strip{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:2px;background:var(--line)}
.strip .ph{height:260px;border:0}
.strip-cap{font-size:11.5px;color:var(--faint);margin-top:12px;letter-spacing:.01em}
.cats{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.cat{display:block}
.cat .ph{height:176px;margin-bottom:16px;transition:border-color .18s}
.cat:hover .ph{border-color:#b9b2a7}
.cat b{display:block;font-size:15px;margin-bottom:5px;letter-spacing:-.01em}
.cat span{display:block;font-size:11.5px;color:var(--muted);line-height:1.55;font-family:var(--mono);letter-spacing:.02em}
.cat .go{display:inline-block;margin-top:8px;font-size:11px;border-bottom:1px solid var(--line);padding-bottom:1px;color:var(--ink)}
.cat:hover .go{border-color:var(--ink)}

/* process */
.two{display:grid;grid-template-columns:1.02fr 1.38fr;gap:56px;align-items:start}
.shots{display:grid;gap:2px}
.shots .ph{height:132px}
.steps{list-style:none;margin:0;padding:0}
.steps li{display:grid;grid-template-columns:36px 1fr auto;gap:16px;padding:16px 0;border-bottom:1px solid var(--line);align-items:baseline}
.steps li:last-child{border-bottom:0}
.steps .n{font-family:var(--mono);font-size:10.5px;color:var(--faint);letter-spacing:.06em}
.steps b{font-weight:600;font-size:14px;letter-spacing:-.005em}
.steps em{font-style:normal;font-size:11px;color:var(--muted);font-family:var(--mono);letter-spacing:.02em}
.flow{display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid var(--line)}
.flow div{padding:20px 20px 0 0}
.flow div+div{padding-left:20px;border-left:1px solid var(--line)}
.flow b{display:block;font-size:14.5px;margin:9px 0 4px;letter-spacing:-.01em}
.flow .d{font-family:var(--mono);font-size:10.5px;color:var(--muted);letter-spacing:.05em}
.flow .bar{height:2px;background:var(--accent);margin-top:18px;opacity:.9;transition:width .4s ease}

/* certs */
.certs{display:grid;grid-template-columns:1fr 330px;gap:44px;align-items:center}
.certlist{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}
.certlist div{border:1px solid var(--line);height:70px;display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:10px;letter-spacing:.07em;color:#4d4d4d;text-align:center;padding:8px;background:#fff}
.gate{border:1px solid var(--line);background:var(--sand);padding:24px}
.gate b{display:block;font-size:15px;margin-bottom:7px;letter-spacing:-.01em}
.gate p{font-size:11.5px;color:var(--muted);margin:0 0 14px;line-height:1.55}

/* tables */
table.t{width:100%;border-collapse:collapse;font-size:14px}
table.t th{font-family:var(--mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--faint);font-weight:500;text-align:left;padding:10px 0;border-bottom:1px solid var(--ink)}
table.t td{padding:10px 0;border-bottom:1px solid var(--line);vertical-align:top}
table.t tr:last-child td{border-bottom:0}
table.t tbody tr:hover td{background:#fbfaf8}
table.t td.k{color:var(--muted);width:38%;font-size:13px}
table.t td.num{font-family:var(--mono);font-size:12.5px;font-variant-numeric:tabular-nums;letter-spacing:.01em}

/* forms */
.rfq{display:grid;grid-template-columns:1.12fr 1fr;gap:56px;align-items:start}
.field{display:block;margin-bottom:18px}
.field span{display:block;font-family:var(--mono);font-size:10px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--faint);margin-bottom:7px}
.field input,.field textarea,.field select{width:100%;border:0;border-bottom:1px solid #cfc9c0;padding:10px 0;font:inherit;
  font-size:14.5px;background:transparent;border-radius:0;color:var(--ink)}
.field input:focus,.field textarea:focus{outline:0;border-color:var(--accent);box-shadow:0 1px 0 0 var(--accent)}
.field textarea{min-height:82px;resize:vertical}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:0 24px}

/* product page */
.crumb{font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;color:var(--faint);padding:18px 0;border-bottom:1px solid var(--line2)}
.crumb a:hover{color:var(--ink)}
.pdp{display:grid;grid-template-columns:1fr 1fr;gap:44px;padding:34px 0}
.gal .ph.main{height:460px}
.pdp .gal{position:sticky;top:104px;align-self:start}
.thumbs{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin-top:6px}
.thumbs .ph{height:92px}
.pdp h1{font-size:clamp(28px,3.2vw,40px);margin:0 0 9px}
.pdp .for{color:var(--muted);font-size:14px;margin-bottom:18px}
.checks{list-style:none;margin:24px 0 0;padding:0;font-size:13px;color:#333}
.checks li{padding:7px 0 7px 24px;position:relative;border-bottom:1px solid var(--line2)}
.checks li:last-child{border-bottom:0}
.checks li:before{content:"";position:absolute;left:0;top:13px;width:6px;height:6px;background:var(--accent);border-radius:50%}

/* cards */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.card{border-top:1px solid var(--line);padding-top:16px;display:block;transition:border-color .18s}
.card:hover{border-color:var(--ink)}
.card .ph{height:180px;margin-bottom:14px}
.card b{display:block;font-size:14.5px;margin-bottom:6px;letter-spacing:-.01em}
.card .kv{display:block;font-family:var(--mono);font-size:9.5px;color:#8d8d8d;line-height:1.6;letter-spacing:.13em;text-transform:uppercase}
.cards .card .tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px;padding:0 14px}
.cards .card .tags span{font-family:var(--mono);font-size:9px;letter-spacing:.1em;color:#6f6f6f;background:#f4f1ec;padding:3px 7px;border-radius:2px}
.card .more{display:inline-block;margin-top:9px;font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:#8a1a2c;border-bottom:0}
.card:hover .more{border-color:var(--ink)}
.cards.q3{grid-template-columns:repeat(3,1fr)}
.cards.q2{grid-template-columns:repeat(2,1fr)}

/* filters */
.filters{display:flex;flex-wrap:wrap;gap:10px 30px;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:0 0 34px}
.filters div{display:flex;align-items:center;gap:7px;font-size:12px}
.filters span.lbl{font-family:var(--mono);font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);margin-right:5px}
.chip{border:1px solid var(--line);background:#fff;padding:6px 11px;color:#555;cursor:pointer;font:inherit;font-size:11.5px;
  transition:all .15s}
.chip:hover{border-color:#b9b2a7;color:var(--ink)}
.chip.on{background:var(--ink);border-color:var(--ink);color:#fff}

.docs{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:22px}
.docs figure{margin:0}
.docs figcaption{padding:9px 0 0}
.docs figcaption b{display:block;font-size:12.5px;letter-spacing:-.005em}
.docs figcaption span{display:block;font-size:11px;color:var(--muted);line-height:1.5;margin-top:2px}
@media (max-width:760px){.docs{grid-template-columns:1fr 1fr}}

.article{max-width:780px;margin:0 auto;padding:56px 0}
.article h1{font-size:clamp(30px,3.6vw,44px);margin-bottom:14px}
.article .meta{display:flex;gap:14px;align-items:center;margin-bottom:28px;flex-wrap:wrap}
.article .tag{font-family:var(--mono);font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;
  border:1px solid var(--line);padding:5px 8px;color:var(--muted)}
.article .date{font-family:var(--mono);font-size:11px;color:var(--faint);letter-spacing:.06em}
.article p{font-size:17px;line-height:1.62;color:#262626;margin:0 0 15px}
.article .src{font-size:12px;color:var(--muted);border-top:1px solid var(--line);padding-top:16px;margin-top:34px}

.post-list{padding:20px 0 0}
.post-item{display:grid;grid-template-columns:132px 1fr;gap:32px;padding:28px 0;border-bottom:1px solid var(--line);align-items:start}
.post-item:first-child{border-top:1px solid var(--line)}
.post-item .date{font-family:var(--mono);font-size:11px;color:var(--faint);letter-spacing:.06em;padding-top:5px}
.post-item h2{font-size:22px;letter-spacing:-.02em;margin-bottom:9px}
.post-item h2 a:hover{border-bottom:1px solid var(--ink)}
.post-item p{font-size:13.5px;color:var(--muted);margin:0 0 10px;max-width:70ch}
.post-item .more{font-size:11.5px;border-bottom:1px solid var(--line);padding-bottom:1px}
.post-item:hover .more{border-color:var(--ink)}
.teaser{display:grid;grid-template-columns:1fr auto;gap:28px;align-items:end;border-top:1px solid var(--line);padding-top:26px}
.teaser h3{font-size:20px;margin-bottom:8px}
.teaser p{font-size:13px;color:var(--muted);margin:0;max-width:64ch}

.addr{border:1px solid var(--line);background:var(--sand);padding:28px}
.addr b{display:block;font-family:var(--mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);margin-bottom:10px}
.addr p{margin:0 0 14px;font-size:14px;line-height:1.6}
.addr a{font-size:12px;border-bottom:1px solid var(--line);padding-bottom:1px}
.addr a:hover{border-color:var(--ink)}
.ph.flat{background-image:none;background:var(--sand)}
.ph.flat span{color:#8d867c}

.cat-flat{aspect-ratio:1/1;border:1px solid var(--line);background:var(--sand);
  display:flex;flex-direction:column;justify-content:flex-end;gap:6px;padding:20px}
.cat-flat .cap{font-family:var(--mono);font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint)}
.cat-flat .big{font-size:15px;letter-spacing:-.01em;color:var(--ink)}
.spec-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start}
.doc-card{border:1px solid var(--line);background:#fff;padding:24px}
.doc-card b{display:block;font-size:15px;margin-bottom:8px;letter-spacing:-.01em}
.doc-card p{font-size:12px;color:var(--muted);line-height:1.6;margin:0 0 16px}
.load{border-top:1px solid var(--line2);padding:12px 0}
.load:first-of-type{border-top:0}
.load b{display:block;font-size:22px;font-weight:650;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.load span{font-family:var(--mono);font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint)}
@media (max-width:900px){.spec-grid{grid-template-columns:1fr;gap:24px}}

.guide-grid{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:56px;align-items:start}
.guide-body p{font-size:16.5px;line-height:1.62;color:#262626;margin:0 0 13px;max-width:70ch}
.guide-body h2{font-size:24px;margin:26px 0 10px}
.guide-card{position:sticky;top:104px;border:1px solid var(--line);padding:26px 24px;background:#fff}
.guide-card .cap{font-family:var(--mono);font-size:9.5px;letter-spacing:.13em;text-transform:uppercase;color:var(--faint);
  padding-bottom:12px;border-bottom:1px solid var(--line);margin-bottom:6px}
.guide-card .row{display:flex;justify-content:space-between;gap:14px;padding:9px 0;border-bottom:1px solid var(--line2);font-size:12px}
.guide-card .row span:first-child{color:var(--muted)}
.guide-card .row span:last-child{font-family:var(--mono);font-size:11.5px;text-align:right}
.guide-card .btn{margin-top:16px;width:100%;justify-content:center}
.guide-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:36px}
.guide-tile{border:1px solid var(--line);padding:26px 24px;display:flex;flex-direction:column;gap:10px;transition:border-color .18s}
.guide-tile:hover{border-color:var(--ink)}
.guide-tile .k{font-family:var(--mono);font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint)}
.guide-tile h3{font-size:17px;line-height:1.3}
.guide-tile p{font-size:12px;color:var(--muted);margin:0;line-height:1.6}
.guide-tile .go{font-size:11.5px;border-bottom:1px solid var(--line);align-self:flex-start;margin-top:auto}
@media (max-width:980px){.guide-grid{grid-template-columns:1fr;gap:30px}.guide-card{position:static}.guide-list{grid-template-columns:1fr}}

.byline{display:flex;align-items:center;gap:11px;margin:0 0 26px}
.byline img{width:38px;height:38px;border-radius:50%;object-fit:cover}
.byline span{font-size:12px;color:var(--muted)}
.byline b{color:var(--ink);font-weight:600}
.founder{display:grid;grid-template-columns:280px 1fr;gap:48px;align-items:start}
.founder img{width:100%}
.founder .role{font-family:var(--mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);margin-bottom:10px}
.founder h2{font-size:26px;margin-bottom:14px}
@media (max-width:900px){.founder{grid-template-columns:1fr;gap:26px}.founder img{max-width:240px}}

.chips{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0 0}
.chips span{font-family:var(--mono);font-size:10px;letter-spacing:.08em;text-transform:uppercase;
  border:1px solid var(--line);background:#fff;padding:6px 10px;color:#444}
.chips span b{color:var(--accent);font-weight:600}

.hero-split{display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center}
.hero-split .shot{position:relative;overflow:hidden;border:1px solid var(--line);aspect-ratio:4/3}
.hero-split .shot img{width:100%;height:100%;object-fit:contain;display:block;background:#fff}
.hero-split .shot .cap{position:absolute;left:14px;bottom:14px;background:rgba(255,255,255,.94);
  font-family:var(--mono);font-size:9.5px;letter-spacing:.1em;text-transform:uppercase;padding:7px 10px}

.trust{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:34px}
.trust div{padding:16px 18px;border-left:1px solid var(--line2);font-size:12px;color:#333;display:flex;gap:8px;align-items:center}
.trust div:first-child{border-left:0;padding-left:0}
.trust i{width:13px;height:13px;border-radius:50%;background:var(--accent-soft);color:var(--accent);
  font-style:normal;font-size:9px;display:flex;align-items:center;justify-content:center;flex:none}

.sku-card{border:1px solid var(--line);background:#fff;display:flex;flex-direction:column;transition:border-color .18s,transform .18s}
.sku-card:hover{border-color:var(--accent);transform:translateY(-2px)}
.sku-card .pic{aspect-ratio:1/1;overflow:hidden;background:var(--ph);border-bottom:1px solid var(--line2)}
.sku-card .pic img{width:100%;height:100%;object-fit:contain;background:#fff}
.sku-card .body{padding:14px 16px 16px}
.sku-card .code{font-family:var(--mono);font-size:9.5px;letter-spacing:.1em;color:var(--faint);text-transform:uppercase}
.sku-card b{display:block;font-size:14.5px;font-weight:500;margin:4px 0 7px;letter-spacing:-.01em;color:#141210}
.sku-card:hover b{text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.sku-card .tags{display:flex;flex-wrap:wrap;gap:5px}
.sku-card .tags span{font-family:var(--mono);font-size:9px;letter-spacing:.09em;text-transform:uppercase;
  background:#f5f2ed;border:0;padding:3px 7px;color:#6d6d6d;border-radius:2px}
.sku-card .go{margin-top:9px;font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:#8a1a2c}

.grp{margin-top:38px}
.grp h3{font-size:16px;font-weight:600;letter-spacing:-.005em;margin-bottom:3px}
.grp .sub{font-size:12px;color:var(--muted);margin-bottom:16px}

.float{position:fixed;right:22px;bottom:26px;z-index:55;display:flex;flex-direction:column;gap:10px}
.float a{width:46px;height:46px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);box-shadow:0 2px 10px rgba(0,0,0,.08);font-size:16px;transition:transform .15s}
.float a:hover{transform:translateY(-2px)}
.float a.wa{background:#25D366;border-color:#25D366;color:#fff}
.float a.q{background:var(--accent);border-color:var(--accent);color:#fff;font-family:var(--mono);font-size:10px;letter-spacing:.06em}

@media (max-width:980px){
  .hero-split{grid-template-columns:1fr;gap:28px}
  .trust{grid-template-columns:1fr 1fr}
  .float{display:none}
}

.docs{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.doc{border:1px solid var(--line);background:#fff;padding:22px;display:block;transition:border-color .18s,transform .18s}
.doc:hover{border-color:var(--accent);transform:translateY(-2px)}
.doc .k{font-family:var(--mono);font-size:9px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint)}
.doc b{display:block;font-size:15px;margin:8px 0 6px;letter-spacing:-.01em}
.doc p{font-size:12.5px;color:var(--muted);line-height:1.55}
.doc .go{display:inline-block;margin-top:12px;font-size:11.5px;color:var(--accent)}
@media (max-width:900px){.docs{grid-template-columns:1fr}}

.consent[hidden]{display:none !important}
.consent{position:fixed;left:16px;right:16px;bottom:16px;z-index:70;background:#111;color:#eee;
  padding:14px 18px;display:flex;gap:18px;align-items:center;justify-content:space-between;max-width:860px;margin:0 auto;font-size:12.5px}
.consent p{margin:0;line-height:1.5;color:#ddd}
.consent button{font:inherit;cursor:pointer;padding:8px 14px;border-radius:2px}
.consent .btn{background:var(--accent);border:1px solid var(--accent);color:#fff}
.consent .ghost{background:transparent;border:1px solid #555;color:#eee}
@media (max-width:700px){.consent{flex-direction:column;align-items:flex-start;bottom:64px}}

/* band */
.band{display:flex;align-items:center;justify-content:space-between;gap:24px;border:1px solid var(--line);padding:24px 26px;margin-top:26px;background:#fff}
.band h3{font-size:19px;margin-bottom:5px}
.band p{font-size:12.5px;color:var(--muted);margin:0;max-width:60ch;line-height:1.6}

/* footer */
.site-footer{background:#0f0f0f;color:#cfcfcf;padding:72px 0 34px}
.fgrid{display:grid;grid-template-columns:1.4fr .9fr .9fr .9fr .9fr .9fr;gap:26px}
@media (max-width:1180px){.fgrid{grid-template-columns:1.2fr 1fr 1fr 1fr;gap:24px}}
@media (max-width:820px){.fgrid{grid-template-columns:1fr 1fr;gap:22px}}
.site-footer b{display:block;font-family:var(--mono);font-size:9.5px;letter-spacing:.16em;text-transform:uppercase;color:#8a8a8a;margin-bottom:12px;font-weight:500}
.site-footer a{color:#d4d4d4;transition:color .15s}
.site-footer a:hover{color:#fff}
.site-footer p{margin:0 0 7px;font-size:13px;line-height:1.6;color:#b9b9b9}
.site-footer .flogo{font-weight:700;letter-spacing:.26em;margin-bottom:14px;color:#fff}
.fall{border-top:1px solid #262626;margin-top:38px;padding-top:24px}
.fall b{display:block;font-family:var(--mono);font-size:9.5px;letter-spacing:.16em;text-transform:uppercase;
  color:#8a8a8a;margin-bottom:14px;font-weight:500}
.allgrid{display:grid;grid-template-columns:repeat(5,1fr);gap:4px 26px}
.allgrid a{font-size:11.5px;color:#8f8f8f;line-height:1.65;transition:color .15s}
.allgrid a:hover{color:#fff}
.fbot{border-top:1px solid #262626;margin-top:48px;padding-top:20px;font-size:11px;color:#7d7d7d;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}


.faq{border-bottom:1px solid var(--line);padding:16px 0}
.faq summary{cursor:pointer;font-weight:600;font-size:14px;list-style:none;display:flex;justify-content:space-between;gap:20px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";font-family:var(--mono);font-size:15px;color:var(--muted);flex:none}
.faq[open] summary:after{content:"‘2"}
.faq p{margin:10px 0 0;font-size:13px;color:var(--muted);max-width:70ch}
.next3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:40px;border-top:1px solid var(--line);padding-top:22px}
.next3 b{font-family:var(--mono);font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent)}
.next3 p{font-size:11.5px;color:var(--muted);margin:7px 0 0;line-height:1.55}
@media (max-width:760px){.next3{grid-template-columns:1fr}}

/* mobile bar */
.mbar{display:none}

a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

@media (max-width:1080px){
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .shead{grid-template-columns:1fr;gap:18px;align-items:start}
  .shead .hint{border-left:0;padding-left:0;max-width:62ch}
}
@media (max-width:980px){
  .topbar{display:none}
  .nav{display:none}
  .nav.open{display:flex;position:absolute;top:72px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;gap:0;padding:10px 28px 18px}
  .nav.open a{padding:12px 0;border-bottom:1px solid var(--line2)}
  .nav.open a:after{display:none}
  .burger{display:block}
  .hd{gap:18px;height:64px}
  .stats{grid-template-columns:1fr 1fr;gap:18px 0}
  .stats div:nth-child(3){border-left:0;padding-left:0}
  .strip,.two,.certs,.rfq,.pdp{grid-template-columns:1fr}
  .fgrid{grid-template-columns:1fr 1fr}
  .allgrid{grid-template-columns:1fr 1fr}
  .strip .ph{height:200px}
  .cats,.certlist{grid-template-columns:1fr 1fr}
  .cards,.cards.q3{grid-template-columns:1fr 1fr}
  .flow{grid-template-columns:1fr 1fr}
  .gal .ph.main{height:320px}
  .row2{grid-template-columns:1fr}
  .section{padding-top:calc(var(--sec)*.8);padding-bottom:calc(var(--sec)*.8)}
  .hero{padding-top:52px;padding-bottom:44px}
  .band{flex-direction:column;align-items:flex-start}
  .mbar{display:grid;grid-template-columns:1fr 1fr;position:fixed;left:0;right:0;bottom:0;z-index:60;border-top:1px solid #111;background:#fff}
  .mbar a{padding:15px;text-align:center;font-size:12.5px;font-weight:600}
  .mbar a.dark{background:var(--accent);color:#fff}
  body{padding-bottom:54px}
}
@media (max-width:620px){
  table.t{font-size:12.5px}
  table.t th{font-size:8.5px;letter-spacing:0;white-space:normal;padding:8px 6px 8px 0;line-height:1.3}
  table.t td{padding:10px 6px 10px 0;font-size:12px}
  table.t td.k{width:44%;font-size:12px}
  table.t td.num{font-size:11.5px}
  .guide-grid{display:flex;flex-direction:column}
  .guide-card{order:-1}
  .guide-card .row{display:block;padding:10px 0}
  .guide-card .row span:first-child{display:block;color:var(--faint);font-family:var(--mono);
    font-size:9px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:3px}
  .guide-card .row span:last-child{display:block;text-align:left;font-family:var(--sans);font-size:13px;line-height:1.5}
  .guide-body h2{font-size:21px}
  .guide-body p{font-size:15.5px}
}
@media (max-width:620px){
  .wrap{padding:0 20px}
  .hd{gap:10px;height:60px}
  .lang{display:none}
  .hd .right{gap:8px}
  .hd .right .btn.small{display:none}
  .logo{font-size:13px;letter-spacing:.2em}
  .nav.open{top:60px}
  h1{font-size:36px}
  .hero .lede{font-size:16px}
  .promise{font-size:10.5px;gap:12px}
  body{overflow-x:hidden}
  .cards,.cards.q3,.cards.q2,.cats{grid-template-columns:1fr}
  .stats b{font-size:25px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
/* ===== 移动端响应式修正（覆盖所有双栏/多栏） ===== */
html,body{max-width:100%}
img,picture,video,iframe{max-width:100%}
@media (max-width:980px){
  .shead{grid-template-columns:1fr;gap:16px;align-items:start}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .pdp{grid-template-columns:1fr;gap:26px;padding:34px 0}
  .two,.certs,.rfq,.strip{grid-template-columns:1fr;gap:26px}
  .stats{grid-template-columns:1fr 1fr}
  .stats div:nth-child(odd){border-left:0;padding-left:0}
  .cards,.cards.q3,.cards.q2{grid-template-columns:1fr 1fr;gap:16px}
  .cats,.certlist,.flow,.docs,.thumbs{grid-template-columns:1fr 1fr}
  .steps li{grid-template-columns:28px 1fr;gap:12px}
  .steps li span:last-child{grid-column:2;color:var(--muted)}
  .t{display:block;width:100%;overflow-x:auto}
  .guide-list{grid-template-columns:1fr 1fr}
  .fgrid{grid-template-columns:1fr 1fr}
}
@media (max-width:620px){
  .wrap{padding:0 18px}
  .cards,.cards.q3,.cards.q2,.hero-mosaic,.cats,.certlist,.flow,.docs,.row2,.guide-list,.fgrid{grid-template-columns:1fr}
  .hero h1{font-size:clamp(26px,8.4vw,34px);max-width:100%}
  .hero-mosaic .hm-a{grid-row:auto}
  .hero-mosaic .hm-b,.hero-mosaic .hm-c{display:none}
  .stats{padding:18px 18px}
  .stats b{font-size:24px}
  .mbar a{padding:14px 8px}
}