/* 嘉榕科技官网 · 公共样式 */
:root{
  --ink:#14273B; --ink-2:#2B3F54; --muted:#5C6B77; --line:#D9DFE3;
  --ground:#F4F6F7; --paper:#FFFFFF; --accent:#1E6F55; --accent-soft:#E3F0EA;
  --serif:"Noto Serif SC","Songti SC","SimSun",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --maxw:1120px;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --ink:#E8EEF2; --ink-2:#C4CFD8; --muted:#8E9BA6; --line:#2C3A47;
    --ground:#0F1820; --paper:#172230; --accent:#5DB995; --accent-soft:#17342A;
  }
}
:root[data-theme="dark"]{
  --ink:#E8EEF2; --ink-2:#C4CFD8; --muted:#8E9BA6; --line:#2C3A47;
  --ground:#0F1820; --paper:#172230; --accent:#5DB995; --accent-soft:#17342A;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--ground);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:inherit}
h1,h2,h3{font-family:var(--serif);font-weight:600;line-height:1.3;margin:0;text-wrap:balance}
p{margin:0}
.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:24px}
.eyebrow{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);font-weight:500}

/* header */
.site-header{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--ground) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-family:var(--serif);font-size:18px;font-weight:600;letter-spacing:.04em}
.brand-mark{width:28px;height:28px;flex:none}
.nav{display:flex;gap:28px;font-size:14px}
.nav a{text-decoration:none;color:var(--ink-2);padding:6px 0;border-bottom:2px solid transparent}
.nav a:hover,.nav a[aria-current]{color:var(--ink);border-color:var(--accent)}
.lang-switch{display:flex;gap:2px;font-size:12px;letter-spacing:.06em;border:1px solid var(--line);border-radius:3px;padding:2px}
.lang-switch a{text-decoration:none;color:var(--muted);padding:2px 8px;border-radius:2px}
.lang-switch a[aria-current]{background:var(--ink);color:var(--ground)}
.lang-switch a:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
@media (max-width:640px){.nav{gap:16px;font-size:13px}.nav a.hide-sm{display:none}}

/* hero */
.hero{padding-block:88px 72px;border-bottom:1px solid var(--line)}
.hero .wrap{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:center}
.hero h1{font-size:clamp(30px,4.6vw,52px);margin-top:14px}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero .lede{margin-top:20px;font-size:17px;color:var(--ink-2);max-width:34em}
.hero .actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.btn{display:inline-block;padding:12px 22px;border-radius:4px;text-decoration:none;font-size:15px;font-weight:500;border:1px solid var(--ink)}
.btn.primary{background:var(--ink);color:var(--ground)}
.btn.ghost{color:var(--ink)}
.btn:focus-visible,.nav a:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.hero-fig{display:block;width:100%;max-width:100%;height:auto}
@media (max-width:860px){.hero .wrap{grid-template-columns:1fr}.hero-fig{max-width:420px;margin:0 auto}}

/* sections */
.section{padding-block:72px}
.section + .section{border-top:1px solid var(--line)}
.section-head{max-width:40em;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,3vw,34px);margin-top:12px}
.section-head p{margin-top:12px;color:var(--muted)}
.grid{display:grid;gap:24px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.service{padding:28px 24px;background:var(--paper);border:1px solid var(--line)}
.service h3{font-size:19px;margin-bottom:10px}
.service p{color:var(--muted);font-size:15px}
.service .tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:16px}
.service .tags span{font-size:12px;padding:2px 8px;background:var(--accent-soft);color:var(--accent);border-radius:2px}

/* process (真实顺序，所以用编号) */
.process{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:0;border:1px solid var(--line);background:var(--paper)}
.process li{list-style:none;padding:24px;border-right:1px solid var(--line)}
.process li:last-child{border-right:0}
.process .num{font-family:var(--serif);font-size:28px;color:var(--accent);font-variant-numeric:tabular-nums}
.process h3{font-size:17px;margin:8px 0 6px}
.process p{font-size:14px;color:var(--muted)}
@media (max-width:860px){.process li{border-right:0;border-bottom:1px solid var(--line)}.process li:last-child{border-bottom:0}}

/* product */
.product{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center;background:var(--paper);border:1px solid var(--line);padding:40px}
.product h3{font-size:26px}
.product .meta{display:grid;grid-template-columns:auto 1fr;gap:6px 18px;margin-top:20px;font-size:14px}
.product .meta dt{color:var(--muted)}
.product .meta dd{margin:0}
.product .links{margin-top:24px;display:flex;flex-wrap:wrap;gap:16px;font-size:14px}
.product .links a{color:var(--accent)}
.phone{width:100%;max-width:320px;margin:0 auto;display:block;height:auto}
@media (max-width:860px){.product{grid-template-columns:1fr;padding:28px 20px}}

/* about + contact */
.about{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px}
.about p+p{margin-top:14px}
.facts{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-content:start}
.facts div{border-top:2px solid var(--ink);padding-top:12px}
.facts b{display:block;font-family:var(--serif);font-size:22px}
.facts span{font-size:13px;color:var(--muted)}
@media (max-width:860px){.about{grid-template-columns:1fr}}
.contact-list{display:grid;grid-template-columns:auto 1fr;gap:10px 24px;font-size:15px;margin-top:8px}
.contact-list dt{color:var(--muted)}
.contact-list dd{margin:0}
.placeholder{background:#FFF3C4;color:#6B4E00;padding:0 4px;border-radius:2px}
:root[data-theme="dark"] .placeholder{background:#4A3B0B;color:#FFE08A}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .placeholder{background:#4A3B0B;color:#FFE08A}}

/* footer */
.site-footer{border-top:1px solid var(--line);padding-block:32px;font-size:13px;color:var(--muted)}
.site-footer .wrap{display:flex;flex-wrap:wrap;gap:12px 32px;justify-content:space-between}
.site-footer a{color:var(--muted);text-decoration:none}
.site-footer a:hover{color:var(--ink)}
.site-footer .legal{display:flex;flex-wrap:wrap;gap:8px 16px}

/* 法律文档页 */
.doc{padding-block:56px 80px}
.doc .wrap{max-width:760px}
.doc h1{font-size:clamp(26px,3.4vw,36px)}
.doc .updated{color:var(--muted);font-size:14px;margin-top:10px}
.doc h2{font-size:20px;margin-top:40px;margin-bottom:10px}
.doc h3{font-size:16px;margin-top:22px;margin-bottom:6px}
.doc p,.doc li{color:var(--ink-2);font-size:15.5px}
.doc p+p{margin-top:10px}
.doc ul,.doc ol{padding-left:1.4em;margin:8px 0}
.doc table{width:100%;border-collapse:collapse;font-size:14px;margin-top:12px}
.doc th,.doc td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
.doc th{background:var(--paper)}
.doc .table-wrap{overflow-x:auto}
.faq details{border-top:1px solid var(--line);padding:14px 0}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;font-weight:500;color:var(--ink)}
.faq details p{margin-top:8px}
.site-header-right{display:flex;align-items:center;gap:20px}
@media (max-width:640px){.site-header-right{gap:12px}}