/* 索思智能官网 · 样式
   参照华为昇腾官网（hiascend.com）的设计语言：浅灰底 + 白色圆角卡片；蓝紫柔和渐变点缀重点；
   版块紧凑（间距 56px、标题 32px）；实心白色顶栏；黑色胶囊按钮。 */
:root{
  --page:#f4f5f7;
  --card:#ffffff;
  --black:#000;
  --text:rgba(0,0,0,.85);
  --sub:rgba(0,0,0,.6);
  --muted:rgba(0,0,0,.42);
  --line:rgba(0,0,0,.08);
  --btn:#202329;
  --accent:#2f6bff;
  --violet:#7b61ff;
  --tint:linear-gradient(135deg,#eaf0ff 0%,#f1edff 100%);
  --tint-soft:linear-gradient(160deg,#f3f6ff 0%,#ffffff 70%);
  --sans:"Helvetica Neue",Helvetica,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;
  --gap:20px;
  --radius:16px;
  --max:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--page);color:var(--text);font-family:var(--sans);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:8px}
h1,h2,h3,h4{margin:0;font-weight:600;color:var(--black)}
p{margin:0}
[id]{scroll-margin-top:84px}
.wrap{max-width:var(--max);margin:0 auto;padding-inline:var(--gap)}
.eyebrow{font-size:13px;color:var(--muted)}
.arr{display:inline-block;transition:transform .2s}
.ar{width:14px;height:14px;transition:transform .2s;flex:none}
.demo{display:inline-block;margin-left:8px;padding:0 6px;border:1px solid var(--line);border-radius:4px;font-size:11px;font-weight:400;line-height:18px;color:var(--muted);vertical-align:2px}
.new{display:inline-block;margin-left:8px;font-size:12px;font-weight:600;line-height:18px;color:#e5262f;vertical-align:2px}
.tag{display:inline-block;margin-left:8px;padding:0 6px;border-radius:4px;font-size:11px;font-weight:600;line-height:17px;color:#fff;vertical-align:2px;letter-spacing:.02em}
.tag-new{background:linear-gradient(90deg,#2f6bff,#7b61ff)}
.tag-hot{background:linear-gradient(90deg,#ff5a36,#ff2d6f)}

/* ---------- 顶栏：实心白色 64px（昇腾） ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);-webkit-backdrop-filter:saturate(180%) blur(12px);backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid transparent;transition:border-color .2s,box-shadow .2s}
.nav.scrolled{border-bottom-color:var(--line);box-shadow:0 4px 20px -12px rgba(0,0,0,.15)}
.nav-bar{position:relative;max-width:var(--max);margin:0 auto;height:64px;display:flex;align-items:center;gap:40px;padding-inline:var(--gap)}
.brand{display:flex;align-items:center;gap:10px;flex:none;font-size:17px;font-weight:600;color:var(--black);letter-spacing:.04em}
.links{display:flex;align-items:center;gap:4px;margin-right:auto;font-size:15px;color:var(--black)}
.links > a,.mega-trigger{position:relative;display:inline-flex;align-items:center;gap:4px;height:64px;padding:0 14px;transition:color .15s}
.links > a::after,.mega-trigger::after{content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;border-radius:2px;background:var(--accent);transform:scaleX(0);transition:transform .2s}
.links > a:hover,.mega-trigger:hover,.has-mega:hover .mega-trigger,.has-mega:focus-within .mega-trigger{color:var(--accent)}
.links a[aria-current="page"]{color:var(--accent);font-weight:600}
.links a[aria-current="page"]::after{transform:scaleX(1)}
.chev{width:12px;height:12px;transition:transform .2s}
.has-mega{position:relative}
.has-mega:hover .chev,.has-mega:focus-within .chev{transform:rotate(180deg)}
.mega{position:absolute;top:100%;left:-20px;width:min(760px,calc(100vw - 48px));padding:12px;background:#fff;border-radius:var(--radius);box-shadow:0 24px 56px -24px rgba(0,0,0,.28);opacity:0;visibility:hidden;transform:translateY(6px);transition:opacity .18s,transform .18s,visibility .18s}
.has-mega:hover .mega,.has-mega:focus-within .mega{opacity:1;visibility:visible;transform:none}
.mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:4px}
.mega-item{display:flex;align-items:center;gap:12px;padding:10px;border-radius:12px;transition:background .15s}
.mega-item:hover{background:var(--page)}
.mi-art{flex:none;width:64px;height:48px;border-radius:10px;background:var(--tint);display:grid;place-items:center}
.mi-art svg{width:80%;height:auto}
.mi-txt b{display:block;font-size:14px;font-weight:600;color:var(--black);line-height:1.4}
.mi-txt small{display:block;font-size:12px;color:var(--muted);margin-top:2px}
.mega-all{display:flex;justify-content:flex-end;align-items:center;gap:6px;margin-top:4px;padding:10px 12px 4px;border-top:1px solid var(--line);font-size:13px;color:var(--sub)}
.mega-all:hover{color:var(--accent)}
.mega-all:hover .arr{transform:translateX(4px)}
.nav-cta{flex:none;display:inline-flex;align-items:center;height:34px;padding:0 18px;border-radius:999px;background:var(--btn);color:#fff;font-size:14px;transition:background .2s}
.nav-cta:hover{background:#000}
.menu-btn{display:none;background:none;border:0;padding:8px;cursor:pointer;margin-left:auto}
.nav-act{flex:none;display:flex;align-items:center;gap:20px}
.lang{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--sub);transition:color .15s}
.lang svg{width:16px;height:16px}
.lang:hover{color:var(--accent)}

/* ---------- 按钮：黑色胶囊（主）/ 线框胶囊（次） ---------- */
.btn-more{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:38px;padding:0 18px;border:1px solid rgba(0,0,0,.18);border-radius:999px;font-size:14px;color:var(--black);background:#fff;transition:background .2s,color .2s,border-color .2s}
.btn-more:hover{border-color:var(--black)}
.btn-more:hover .ar{transform:translateX(3px)}
.cta .btn-more:first-child,.cta-sec .btn-more{background:var(--btn);border-color:var(--btn);color:#fff}
.cta .btn-more:first-child:hover,.cta-sec .btn-more:hover{background:#000;border-color:#000}

/* ---------- 首屏：靠左排版、约 460px（昇腾） ---------- */
.hero{position:relative;overflow:hidden;min-height:460px;display:flex;align-items:center;background:linear-gradient(120deg,#ffffff 0%,#f3f5fb 38%,#e7edff 72%,#efe9ff 100%)}
#field{position:absolute;inset:0;width:100%;height:100%}
.hero::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(90deg,rgba(255,255,255,.96) 0%,rgba(255,255,255,.82) 32%,rgba(255,255,255,0) 62%)}
.hero-inner{position:relative;z-index:1;width:100%;max-width:var(--max);margin:0 auto;padding:72px var(--gap) 96px}
.headline{display:flex;flex-direction:column;align-items:flex-start;gap:6px}
.hl-1{font-size:20px;line-height:1.5;font-weight:400;letter-spacing:.36em;color:var(--sub)}
.hl-2{font-size:56px;line-height:1.2;font-weight:600;letter-spacing:.04em;color:var(--black);white-space:nowrap}
.hl-dot{display:inline-block;width:.15em;height:.15em;margin-left:-.01em;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--violet));vertical-align:.02em}
.hero-sub{margin-top:14px;font-size:18px;line-height:28px;color:var(--sub)}
.hero .cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.hero-inner .hl-1,.hero-inner .hl-2,.hero-inner .hero-sub,.hero-inner .cta{animation:rise .8s cubic-bezier(.2,.7,.2,1) both}
.hero-inner .hl-2{animation-delay:.1s}.hero-inner .hero-sub{animation-delay:.22s}.hero-inner .cta{animation-delay:.32s}
@media (prefers-reduced-motion:reduce){.hero-inner .hl-1,.hero-inner .hl-2,.hero-inner .hero-sub,.hero-inner .cta{animation:none}}

/* 快捷入口：压在首屏底边上的一排白卡（昇腾） */
.quick{position:relative;z-index:2;max-width:var(--max);margin:-44px auto 0;padding-inline:var(--gap);display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.q-item{display:flex;align-items:center;justify-content:space-between;gap:12px;height:76px;padding:0 24px;border-radius:var(--radius);background:rgba(255,255,255,.92);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);box-shadow:0 10px 30px -18px rgba(0,0,0,.22);transition:transform .2s,box-shadow .2s}
.q-item b{font-size:16px;font-weight:600;color:var(--black)}
.q-item .ar{color:var(--muted)}
.q-item:hover{transform:translateY(-2px);box-shadow:0 16px 36px -18px rgba(0,0,0,.28)}
.q-item:hover .ar{color:var(--accent);transform:translateX(3px)}

/* ---------- 版块：紧凑节奏（间距 56px，标题 32px） ---------- */
section{padding-block:28px}
main > section:last-of-type{padding-bottom:56px}
.quick + section{padding-top:56px}
.sec-title{text-align:center;padding-inline:var(--gap);margin-bottom:28px}
.sec-title h2{font-size:32px;line-height:44px}
.sec-title p{margin-top:6px;font-size:16px;line-height:24px;color:var(--sub)}

/* 核心技术：蓝紫渐变卡片 + 渐变数字 */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.steps li{padding:32px;border-radius:var(--radius);background:var(--tint);transition:transform .25s}
.steps li:hover{transform:translateY(-3px)}
.steps .num{display:block;font-size:48px;font-weight:300;line-height:1;letter-spacing:-.02em;background:linear-gradient(135deg,var(--accent),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent;font-variant-numeric:tabular-nums}
.steps h3{margin-top:18px;font-size:22px;line-height:32px;letter-spacing:.04em}

/* 通用三栏（产品亮点、我们相信） */
.loop-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.step{padding:28px;border-radius:var(--radius);background:var(--card)}
.step .eyebrow{margin-bottom:12px}
.step h3{font-size:20px;line-height:30px}
.step p{margin-top:8px;color:var(--sub)}

/* 核心产品：白卡 3 × 2 */
.tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);max-width:var(--max);margin:0 auto;padding-inline:var(--gap)}
.tile{display:flex;flex-direction:column;padding:24px;border-radius:var(--radius);background:var(--card);transition:transform .25s,box-shadow .25s}
.tile:hover{transform:translateY(-3px);box-shadow:0 18px 40px -24px rgba(0,0,0,.25)}
.tile-txt{display:flex;flex-direction:column;align-items:flex-start;order:2;margin-top:18px}
.tile h3{font-size:20px;line-height:30px;letter-spacing:.03em}
.tile p{margin:2px 0 12px;font-size:14px;line-height:22px;color:var(--sub)}
.tile .btn-more{height:auto;padding:0;border:0;background:none;color:var(--accent);font-size:14px}
.tile .btn-more:hover{background:none}
.tile:hover .btn-more .ar{transform:translateX(3px)}
.tile-art{order:1;height:170px;border-radius:12px;background:var(--tint-soft);display:grid;place-items:center;overflow:hidden}
.tile-art svg{width:auto;height:72%;max-width:80%;transition:transform .6s cubic-bezier(.2,.7,.2,1)}
.tile:hover .tile-art svg{transform:scale(1.05)}

/* 应用场景：与产品卡同一结构（上图下文），4 × 2 等大白卡，插画同比例同线宽 */
.bento{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);max-width:var(--max);margin:0 auto;padding-inline:var(--gap)}
.case{display:flex;flex-direction:column;padding:16px 16px 18px;border-radius:var(--radius);background:var(--card);transition:transform .25s,box-shadow .25s}
.case:hover{transform:translateY(-3px);box-shadow:0 18px 40px -24px rgba(0,0,0,.25)}
.case-art{height:150px;border-radius:12px;background:var(--tint-soft);display:grid;place-items:center;overflow:hidden}
.case-art svg{width:92%;height:auto;max-height:100%;transition:transform .6s cubic-bezier(.2,.7,.2,1)}
.case:hover .case-art svg{transform:scale(1.05)}
.case h3{margin:14px 4px 0;font-size:17px;line-height:26px;letter-spacing:.04em}

/* 新闻：白色大卡内左右分栏 */
.news{display:grid;grid-template-columns:1.1fr 1fr;gap:32px;padding:24px;border-radius:var(--radius);background:var(--card)}
.feature{position:relative;display:flex;flex-direction:column;justify-content:flex-end;min-height:360px;padding:28px;border-radius:12px;overflow:hidden;background:#000;color:#fff}
.feature > *{position:relative}
.feature .feat-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:55% 100%;transform:scale(1.24);transform-origin:55% 100%;transition:transform .8s ease}
.feature:hover .feat-img{transform:scale(1.28)}
.feature .feat-shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0) 30%,rgba(0,0,0,.55) 58%,rgba(0,0,0,.88) 100%)}
.feature .eyebrow{color:rgba(255,255,255,.72)}
.feature h3{margin-top:10px;font-size:22px;line-height:1.45;color:#fff}
.feature .feat-go{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:14px}
.feature:hover .feat-go .arr{transform:translate(2px,-2px)}
.list{display:flex;flex-direction:column;justify-content:center}
.item{display:grid;grid-template-columns:96px 1fr;gap:16px;padding-block:20px;border-bottom:1px solid var(--line)}
.item:last-child{border-bottom:0}
.item time{padding-top:2px;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.item h3{font-size:16px;line-height:1.5;font-weight:600;transition:color .2s}
.item:hover h3{color:var(--accent)}

/* 行动号召 */
.cta-sec{text-align:center;padding-block:56px}
.cta-sec .sec-title{margin-bottom:24px}

/* ---------- 产品详情页 ---------- */
.p-hero{position:relative;overflow:hidden;display:flex;flex-direction:column;align-items:center;padding:56px var(--gap) 48px;background:linear-gradient(160deg,#ffffff 0%,#eef2ff 55%,#efe9ff 100%);text-align:center}
.p-head h1{font-size:44px;line-height:60px;letter-spacing:.04em}
.p-stage{width:100%;margin-top:20px;display:flex;justify-content:center}
.p-mark{white-space:nowrap;font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-weight:800;letter-spacing:-.02em;line-height:1;background:linear-gradient(180deg,rgba(47,107,255,.16) 0%,rgba(123,97,255,.04) 85%);-webkit-background-clip:text;background-clip:text;color:transparent;user-select:none;pointer-events:none}
.p-hero .cta{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:20px}
.p-hl{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.p-hl-item{display:flex;align-items:center;justify-content:center;min-height:120px;padding:24px;border-radius:var(--radius);background:var(--tint);text-align:center}
.p-hl-item h3{font-size:18px;line-height:28px;letter-spacing:.04em}
.p-specs{display:grid;grid-template-columns:repeat(2,1fr);border-radius:var(--radius);background:var(--card);padding:8px 28px}
.p-spec{display:flex;flex-direction:column;gap:4px;padding:18px 24px 18px 0;border-bottom:1px solid var(--line)}
.p-spec:nth-child(2n){padding-left:24px;border-left:1px solid var(--line)}
.p-spec:nth-last-child(-n+2){border-bottom:0}
.p-spec span{font-size:13px;color:var(--muted)}
.p-spec b{font-size:16px;line-height:1.6;font-weight:500;color:var(--black)}
.p-scenes{display:flex;flex-wrap:wrap;justify-content:center;gap:var(--gap)}
.p-scene{flex:1 1 200px;max-width:280px;padding:26px 20px;border-radius:var(--radius);background:var(--card);text-align:center;font-size:17px;font-weight:600;color:var(--black)}

/* ---------- 关于我们 ---------- */
.sub-hero{min-height:360px}
.sub-hero .hero-inner{padding:64px var(--gap) 72px}
.sub-hero h1{font-size:48px;line-height:64px;letter-spacing:.04em}
.contact-big{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.contact-big > div{padding:28px;border-radius:var(--radius);background:var(--card)}
.contact-big .v{margin-top:8px;font-size:20px;line-height:30px;font-weight:600;color:var(--black);overflow-wrap:anywhere}
.contact-big .v a:hover{color:var(--accent)}

/* ---------- 页脚：纯黑 ---------- */
footer{background:#0b0c0f;color:#fff;padding-top:56px}
.foot-in{max-width:var(--max);margin:0 auto;padding-inline:var(--gap)}
.foot-top{display:grid;grid-template-columns:1fr 2fr;gap:48px}
footer .brand{color:#fff}
.foot-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.foot-cols h4{margin:0 0 14px;font-size:14px;font-weight:600;color:#fff}
.foot-cols ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:9px}
.foot-cols a{font-size:13px;color:rgba(255,255,255,.55);transition:color .2s}
.foot-cols a:hover{color:#fff}
.foot-contact{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);margin-top:40px}
.fc{display:flex;flex-direction:column;align-items:flex-start;gap:4px;padding:24px 26px;border-radius:var(--radius);background:#16181d;color:#fff}
.fc-ic{width:32px;height:32px;border-radius:10px;background:linear-gradient(135deg,var(--accent),var(--violet));color:#fff;display:grid;place-items:center;margin-bottom:12px}
.fc-ic svg{width:17px;height:17px}
.fc small{font-size:12px;color:rgba(255,255,255,.55)}
.fc b{font-size:18px;line-height:28px;font-weight:600;color:rgba(255,255,255,.92);overflow-wrap:anywhere}
a.fc:hover b{color:#fff}
.legal{margin-top:36px;padding-block:20px 24px;border-top:1px solid rgba(255,255,255,.08);text-align:center;font-size:12px;color:#6c7073}

/* ---------- 国际版（英文）：西文不加字距，首屏大标题两行 ---------- */
html[lang="en"] :is(.brand,.steps h3,.tile h3,.case h3,.p-hl-item h3,.p-head h1,.sub-hero h1){letter-spacing:0}
html[lang="en"] .hl-1{font-size:15px;letter-spacing:.22em;text-transform:uppercase}
html[lang="en"] .hl-2{max-width:9.6em;white-space:normal;line-height:1.1;letter-spacing:-.01em}
html[lang="en"] .headline{gap:12px}
html[lang="en"] .mega-grid{grid-template-columns:repeat(2,1fr)}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .nav-bar{gap:20px}
  .links > a,.mega-trigger{padding:0 10px}
}
@media (max-width:960px){
  .links{display:none;position:absolute;top:100%;left:var(--gap);right:var(--gap);margin:0;flex-direction:column;align-items:stretch;gap:2px;padding:10px;background:#fff;border-radius:var(--radius);box-shadow:0 20px 50px -20px rgba(0,0,0,.3);max-height:calc(100vh - 90px);overflow-y:auto}
  .nav.open .links{display:flex}
  .links > a,.mega-trigger{height:46px;padding:0 14px;border-radius:10px}
  .links > a::after,.mega-trigger::after{display:none}
  .links > a:hover,.mega-trigger:hover{background:var(--page)}
  .mega-trigger{width:100%}
  .chev{display:none}
  .mega{position:static;width:auto;opacity:1;visibility:visible;transform:none;padding:0 0 6px 6px;box-shadow:none;background:none;transition:none}
  .mega-grid{grid-template-columns:1fr 1fr}
  .mega-item{padding:8px 10px}
  .mi-art,.mega-all{display:none}
  .menu-btn{display:block;margin-left:8px}
  .nav-act{margin-left:auto}
  .nav-cta{display:none}
  .hl-2{font-size:46px}
  .quick{grid-template-columns:repeat(2,1fr)}
  .tiles{grid-template-columns:repeat(2,1fr)}
  .bento{grid-template-columns:repeat(2,1fr)}
  .p-hl{grid-template-columns:repeat(2,1fr)}
  .news{grid-template-columns:1fr}
  .foot-top{grid-template-columns:1fr}
  .foot-contact{grid-template-columns:1fr}
}
@media (max-width:760px){
  :root{--gap:16px}
  /* ---- 手机端紧凑排版：版块间距、标题都收小 ---- */
  section{padding-block:18px}
  .quick + section{padding-top:32px}
  main > section:last-of-type{padding-bottom:36px}
  .sec-title{margin-bottom:16px}
  .sec-title h2{font-size:22px;line-height:30px}
  .sec-title p{margin-top:4px;font-size:14px;line-height:22px}
  /* 首屏 */
  .hero{min-height:340px}
  .hero::after{background:linear-gradient(180deg,rgba(255,255,255,.95) 0%,rgba(255,255,255,.75) 55%,rgba(255,255,255,.2) 100%)}
  .hero-inner{padding:40px var(--gap) 68px}
  .hl-1{font-size:16px}
  .hl-2{font-size:36px}
  .hero-sub{font-size:16px}
  .hero .cta{margin-top:24px}
  /* 快捷入口：去掉箭头，一行放得下名字和标签 */
  .quick{margin-top:-30px;gap:10px}
  .q-item{height:52px;padding:0 14px}
  .q-item b{font-size:14px}
  .q-item .tag{margin-left:4px}
  .q-item .ar{display:none}
  /* 核心技术：一行一条，数字在左、标题在右 */
  .steps,.loop-grid,.contact-big,.tiles{grid-template-columns:1fr}
  .steps{gap:10px}
  .steps li{display:flex;align-items:center;gap:18px;padding:16px 20px}
  .steps .num{font-size:30px}
  .steps h3{margin-top:0;font-size:17px;line-height:26px}
  /* 产品：左图右文的列表，右侧箭头 */
  .tiles{gap:10px}
  .tile{position:relative;flex-direction:row;align-items:center;gap:14px;padding:12px 40px 12px 12px}
  .tile-art{order:0;flex:none;width:96px;height:80px;border-radius:10px}
  .tile-art svg{height:78%;max-width:84%}
  .tile-txt{order:1;margin-top:0;min-width:0}
  .tile h3{font-size:16px;line-height:24px}
  .tile p{margin:2px 0 0;font-size:13px;line-height:20px}
  .tile .btn-more{position:absolute;right:14px;top:50%;transform:translateY(-50%);gap:0;font-size:0;color:var(--muted)}
  /* 应用场景：两列小卡 */
  .bento{gap:10px}
  .case{padding:10px 10px 12px}
  .case-art{height:96px;border-radius:10px}
  .case h3{margin:10px 2px 0;font-size:15px;line-height:22px}
  /* 新闻 */
  .news{gap:12px;padding:12px}
  .feature{min-height:220px;padding:18px}
  .feature h3{font-size:18px}
  .item{padding-block:14px}
  /* 行动号召 */
  .cta-sec{padding-block:32px}
  .cta-sec .sec-title{margin-bottom:16px}
  /* 页脚：链接三列，联系方式图标在左 */
  footer{padding-top:32px}
  .foot-top{gap:24px}
  .foot-cols{grid-template-columns:repeat(3,1fr);gap:12px}
  html[lang="en"] .foot-cols{grid-template-columns:1fr 1fr;row-gap:20px}   /* 英文链接长，三列会挤成两行 */
  .foot-cols h4{margin-bottom:10px;font-size:13px}
  .foot-cols ul{gap:6px}
  .foot-cols a{font-size:12px}
  .foot-contact{gap:10px;margin-top:24px}
  .fc{display:grid;grid-template-columns:auto 1fr;column-gap:12px;row-gap:0;align-items:center;padding:14px 16px}
  .fc-ic{grid-row:1 / span 2;width:30px;height:30px;border-radius:9px;margin-bottom:0}
  .fc b{font-size:16px;line-height:24px}
  .legal{margin-top:24px;padding-block:16px 20px}
  /* 关于页 */
  .sub-hero{min-height:280px}
  .sub-hero .hero-inner{padding:40px var(--gap) 48px}
  .sub-hero h1{font-size:32px;line-height:44px}
  .loop-grid,.contact-big{gap:10px}
  .step,.contact-big > div{padding:16px 18px}
  .step .eyebrow{margin-bottom:6px}
  .step h3{font-size:17px;line-height:26px}
  .contact-big .v{margin-top:4px;font-size:17px;line-height:26px}
  /* 产品详情页 */
  .p-hero{padding:32px var(--gap) 28px}
  .p-head h1{font-size:30px;line-height:42px}
  .p-stage{margin-top:12px}
  .p-hero .cta{margin-top:16px}
  .p-hl{grid-template-columns:1fr 1fr;gap:10px}
  .p-hl-item{min-height:72px;padding:14px}
  .p-hl-item h3{font-size:15px;line-height:22px}
  .p-specs{grid-template-columns:1fr;padding:4px 18px}
  .p-spec,.p-spec:nth-child(2n){padding:14px 0;border-left:0;border-bottom:1px solid var(--line)}
  .p-spec:nth-last-child(-n+2){border-bottom:1px solid var(--line)}
  .p-spec:last-child{border-bottom:0}
  .p-scenes{gap:10px}
  .p-scene{flex:1 1 calc(50% - 5px);max-width:none;padding:16px 10px;font-size:15px}
}
@media (max-width:560px){
  .item{grid-template-columns:1fr;gap:4px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;scroll-behavior:auto!important}
}