:root{--ink:#1d1d1f;--ink2:#6e6e73;--ink3:#86868b;--line:#d2d2d7;--soft:#f5f5f7;--bg:#fff;--acc:#ff9000;--link:#0066cc;--ok:#1d8a3a;--bad:#c4361c;--mid:#8a6d1d}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font:17px/1.8 -apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;text-wrap:pretty;-webkit-font-smoothing:antialiased}
a{color:var(--link);text-decoration:none}
h1,h2,h3{font-weight:600;letter-spacing:-.01em;line-height:1.2;text-wrap:balance}
h1{font-size:64px}h2{font-size:40px}h3{font-size:21px}
.eyebrow{font-size:17px;font-weight:600;color:var(--ink2)}
.lead{font-size:19px;color:var(--ink2);max-width:40em}
.wrap{max-width:1120px;margin:0 auto;padding:0 32px}
section{padding:88px 0}
section.tight{padding:56px 0}
.sec-h{margin-bottom:36px}.sec-h .lead{margin-top:10px}
/* header */
.top{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);border-bottom:1px solid #e8e8ed}
.top .wrap{display:flex;align-items:center;height:60px;gap:28px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink)}
.logo{display:inline-flex;align-items:center;gap:4px;background:#000;border-radius:8px;height:32px;padding:0 4px 0 10px}
.logo b{color:#fff;font-size:15px;letter-spacing:.07em;font-weight:800}
.logo i{font-style:normal;background:var(--acc);color:#000;font-weight:800;font-size:14px;border-radius:5px;height:24px;line-height:24px;padding:0 6px}
.brand .bt{display:flex;flex-direction:column;line-height:1.15;border-left:1px solid var(--line);padding-left:10px}
.brand .bt b{font-size:14px;color:#0f1a2e}.brand .bt small{font-size:12px;color:var(--ink3);letter-spacing:.06em}
.nav{display:flex;gap:24px;margin-left:auto;font-size:14px}
.nav a{color:var(--ink)}.nav a:hover{color:var(--link)}
.btn{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 22px;border-radius:999px;font-size:17px;font-weight:500;cursor:pointer;border:0;white-space:nowrap}
.btn.pri{background:var(--link);color:#fff}.btn.pri:hover{background:#0077ed}
.btn.sec{background:transparent;color:var(--link);padding:0 6px}
.btn.sm{height:34px;font-size:14px;padding:0 16px}
.btn.wh{background:#fff;color:var(--ink)}
/* hero photo (官网 v157 模板：2:1、左下文字、底部细线数据条) */
.hero{position:relative;aspect-ratio:2/1;max-height:720px;width:100%;overflow:hidden;color:#fff;background:#222}
.hero .ph{position:absolute;inset:0;background-size:cover;background-position:center 55%}
.hero .veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0) 35%,rgba(0,0,0,.72) 100%)}
.hero .cap{position:absolute;right:24px;top:18px;font-size:12px;opacity:.85}
.hero .txt{position:absolute;left:0;right:0;bottom:0}
.hero .txt .wrap{padding-bottom:28px}
.hero .eyebrow{color:#fff;opacity:.92}
.hero h1{margin:8px 0 10px}
.hero .lead{color:rgba(255,255,255,.88);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.hero .acts{display:flex;gap:18px;align-items:center;margin-top:22px}
.hero .btn.sec{color:#fff}
.strip{display:flex;margin-top:28px;border-top:1px solid rgba(255,255,255,.35);padding-top:14px}
.strip div{flex:1;padding:0 18px;border-left:1px solid rgba(255,255,255,.35)}
.strip div:first-child{padding-left:0;border-left:0}
.strip b{display:block;font-size:24px;font-weight:600;line-height:1.3}
.strip span{font-size:13px;opacity:.85}
.strip.dark{border-color:var(--line)}.strip.dark div{border-color:var(--line)}.strip.dark span{color:var(--ink2);opacity:1}
/* chips */
.chips{display:flex;gap:6px;overflow-x:auto;padding:14px 0;scrollbar-width:none}
.chips a{display:flex;flex-direction:column;align-items:center;min-width:92px;padding:6px 8px;color:var(--ink);font-size:13px;border-bottom:2px solid transparent}
.chips a span{font-size:26px;line-height:1.3}
.chips a:hover{border-color:var(--ink)}
/* cards */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:var(--soft);border-radius:18px;overflow:hidden;color:var(--ink);display:flex;flex-direction:column;transition:transform .2s}
.card:hover{transform:translateY(-3px)}
.card .im{aspect-ratio:16/10;background-size:cover;background-position:center}
.card .im.noimg{background:linear-gradient(135deg,#e9e3d6,#d9e4e8);display:flex;align-items:center;justify-content:center;font-size:56px}
.card .bd{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.card .nm{display:flex;align-items:baseline;gap:0 8px;flex-wrap:wrap}
.card .nm small{font-size:13px;color:var(--ink3)}
.card p{font-size:15px;color:var(--ink2);margin:6px 0 16px;flex:1}
.card .kv{display:flex;border-top:1px solid #e3e3e8;padding-top:12px}
.card .kv div{flex:1}.card .kv b{display:block;font-size:19px;font-weight:600}.card .kv span{font-size:12px;color:var(--ink3)}
.tag{display:inline-block;font-size:12px;font-weight:600;color:var(--acc);margin-left:6px}
.tag.gray{color:var(--ink3)}
/* table */
.tbl{width:100%;border-collapse:collapse;font-size:15px}
.tbl th{font-size:13px;font-weight:600;color:var(--ink2);text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);white-space:nowrap}
.tbl td{padding:14px 12px;border-bottom:1px solid #e8e8ed;vertical-align:top}
.tbl td.num{font-variant-numeric:tabular-nums;white-space:nowrap}
.tbl tr.row{cursor:pointer}.tbl tr.row:hover td{background:var(--soft)}
.tbl .cty{white-space:nowrap;font-weight:600}.tbl .cty small{display:block;font-weight:400;font-size:12px;color:var(--ink3)}
.v{font-size:13px;white-space:nowrap}.v.ok{color:var(--ok)}.v.bad{color:var(--bad)}.v.mid{color:var(--mid)}.v.na{color:var(--ink3)}
.tblwrap{overflow-x:auto}
.tbl .v{white-space:normal}.tbl td{min-width:64px}
.note{font-size:13px;color:var(--ink3);margin-top:14px;line-height:1.7}
/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step{background:var(--soft);border-radius:18px;padding:24px}
.step .n{font-size:13px;color:var(--ink3)}.step h3{margin:4px 0 8px}.step p{font-size:15px;color:var(--ink2)}
.step .t{font-size:13px;color:var(--acc);font-weight:600}
/* news */
.news{border-top:1px solid var(--line)}
.news div{display:grid;grid-template-columns:120px 90px 1fr;gap:16px;padding:16px 0;border-bottom:1px solid #e8e8ed;font-size:15px}
.news time{color:var(--ink3);font-variant-numeric:tabular-nums}.news b{font-weight:600}
/* faq */
.faq details{border-bottom:1px solid #e8e8ed;padding:18px 0}
.faq summary{font-size:19px;font-weight:600;cursor:pointer;list-style:none;display:flex;justify-content:space-between}
.faq summary::after{content:"+";color:var(--ink3);font-weight:400}
.faq details[open] summary::after{content:"−"}
.faq p{color:var(--ink2);margin-top:10px;font-size:17px}
/* end */
.end{text-align:center;padding:96px 0;background:var(--soft)}
.end h2{margin-bottom:10px}.end p{color:var(--ink2)}.end .acts{margin-top:24px;display:flex;gap:18px;justify-content:center}
.foot{padding:36px 0 48px;font-size:12px;color:var(--ink3);line-height:1.9}
.foot .wrap{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
/* modal */
.mask{position:fixed;inset:0;background:rgba(0,0,0,.4);display:none;align-items:center;justify-content:center;z-index:50;padding:16px}
.mask.on{display:flex}
.modal{background:#fff;border-radius:20px;max-width:420px;width:100%;padding:28px}
.modal h3{font-size:24px}.modal p{color:var(--ink2);font-size:15px;margin:6px 0 18px}
.modal a,.modal button.c{display:flex;justify-content:space-between;align-items:center;width:100%;padding:14px 16px;border-radius:12px;background:var(--soft);color:var(--ink);font-size:17px;margin-bottom:8px;border:0;cursor:pointer;font-family:inherit}
.modal a span,.modal button.c span{color:var(--ink3);font-size:14px}
.modal .x{float:right;background:none;border:0;font-size:24px;color:var(--ink3);cursor:pointer;line-height:1}
/* B: filter */
.seg{display:inline-flex;background:var(--soft);border-radius:999px;padding:4px;gap:2px;margin:24px 0 8px}
.seg button{border:0;background:none;font:inherit;font-size:14px;padding:6px 16px;border-radius:999px;cursor:pointer;color:var(--ink)}
.seg button.on{background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.12);font-weight:600}
.texthero{padding:72px 0 24px}
.texthero h1{margin:8px 0 14px}
/* C: uses */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center;padding:64px 0 72px}
.collage{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:180px 180px;gap:10px}
.collage div{border-radius:16px;background-size:cover;background-position:center}
.collage div:first-child{grid-row:span 2}
.uses{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.use{background:var(--soft);border-radius:18px;padding:26px 28px}
.use .q{font-size:13px;color:var(--ink3)}.use h3{margin:4px 0 8px}
.use p{font-size:15px;color:var(--ink2)}
.use .rec{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px}
.use .rec a{background:#fff;border-radius:999px;padding:4px 12px;font-size:14px;color:var(--ink)}
.list{border-top:1px solid var(--line)}
.list a{display:grid;grid-template-columns:44px 1.3fr 2fr 110px 110px 24px;gap:14px;align-items:center;padding:16px 4px;border-bottom:1px solid #e8e8ed;color:var(--ink)}
.list a:hover{background:var(--soft)}
.list .f{font-size:28px}.list .d{font-size:15px;color:var(--ink2)}.list .n{font-variant-numeric:tabular-nums;font-weight:600}.list .n small{display:block;font-weight:400;font-size:12px;color:var(--ink3)}
.list .ar{color:var(--ink3)}
/* detail */
.two{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.box{background:var(--soft);border-radius:18px;padding:26px 28px}
.box h3{margin-bottom:10px}
.box ul{list-style:none}.box li{padding:6px 0 6px 18px;position:relative;font-size:16px}
.box li::before{content:"";position:absolute;left:0;top:17px;width:6px;height:6px;border-radius:50%;background:var(--ink3)}
.box.warn li::before{background:var(--acc)}
.facts{display:grid;grid-template-columns:repeat(2,1fr);gap:0 40px}
.facts div{display:flex;justify-content:space-between;gap:20px;padding:14px 0;border-bottom:1px solid #e8e8ed;font-size:15px}
.facts div span:first-child{color:var(--ink2);white-space:nowrap}.facts div span:last-child{text-align:right}
.vgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.vgrid div{background:var(--soft);border-radius:14px;padding:16px 18px}
.vgrid span{font-size:13px;color:var(--ink3)}.vgrid b{display:block;font-size:17px;font-weight:600;margin-top:2px}
.vgrid b.ok{color:var(--ok)}.vgrid b.bad{color:var(--bad)}.vgrid b.mid{color:var(--mid)}.vgrid b.na{color:var(--ink3)}
.plain-hero{background:var(--soft);padding:80px 0 40px}
.plain-hero h1{margin:8px 0 10px}
.crumb{font-size:14px;margin-bottom:6px}.crumb a{color:var(--ink2)}
.hero .crumb a{color:rgba(255,255,255,.85)}
@media (max-width:1000px){.grid{grid-template-columns:repeat(2,1fr)}.steps{grid-template-columns:repeat(2,1fr)}.vgrid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:734px){
 body{font-size:16px}
 h1{font-size:40px}h2{font-size:28px}.eyebrow{font-size:15px}.lead{font-size:17px}
 .wrap{padding:0 16px} section{padding:56px 0}
 .nav{display:none}.top .wrap{gap:12px}.top .btn{margin-left:auto}
 .brand .bt small{display:none}.brand .bt b .sub{display:none}
 .hero .veil{background:linear-gradient(180deg,rgba(0,0,0,.05) 0%,rgba(0,0,0,.35) 30%,rgba(0,0,0,.8) 100%)}
 .hero{aspect-ratio:auto;height:600px}.hero h1{font-size:32px}
 .strip{flex-wrap:wrap}.strip div{flex:0 0 50%;padding:8px 10px;border-left:0}.strip div:nth-child(odd){padding-left:0}.strip div:nth-child(even){border-left:1px solid rgba(255,255,255,.35)}
 .strip.dark div:nth-child(even){border-color:var(--line)}
 .strip b{font-size:22px}
 .hero .acts .btn.pri{height:40px;font-size:15px}
 .grid,.steps,.uses,.two,.facts{grid-template-columns:1fr}
 .split{grid-template-columns:1fr;gap:28px;padding:40px 0}
 .collage{grid-template-rows:120px 120px}
 .news div{grid-template-columns:96px 1fr}.news div b{grid-column:2}.news div span{grid-column:1/3}
 .list a{grid-template-columns:36px 1fr 86px 18px}.list .d,.list .n.t{display:none}
 .end{padding:64px 0}
}