/* ============================================================
   JZClientForNode 官网样式
   设计变量直接沿用 WebUI（src/webui.html）那一套，保证站内和产品里
   看到的颜色、圆角、阴影完全一致。
   ============================================================ */

:root{
  --primary:#0b57d0; --on-primary:#ffffff;
  --primary-container:#d3e3fd; --on-primary-container:#041e49;
  --surface:#fdfcff; --on-surface:#1a1c1e;
  --card:#f4f3fa; --on-card:#1a1c1e;
  --surface-variant:#e1e2ec; --on-surface-variant:#43474e;
  --outline:#74777f; --outline-variant:#d6d8e0;
  --error:#ba1a1a; --success:#1a7f37;
  --radius-xl:28px; --radius-lg:20px; --radius-md:14px; --radius-sm:10px;
  --shadow:0 1px 2px rgba(0,0,0,.08), 0 8px 24px rgba(0,0,0,.04);
  --shadow-lg:0 2px 6px rgba(0,0,0,.06), 0 24px 60px rgba(0,0,0,.10);
  --brand-a:#0b57d0; --brand-b:#1a7f37;
  --maxw:1120px;
  --nav-h:64px;
}

/* 手动切到深色，或者跟随系统 */
:root[data-theme="dark"]{
  --primary:#a8c7fa; --on-primary:#062e6f;
  --primary-container:#0842a0; --on-primary-container:#d3e3fd;
  --surface:#111318; --on-surface:#e2e2e9;
  --card:#1d2025; --on-card:#e2e2e9;
  --surface-variant:#2b2f36; --on-surface-variant:#c4c6d0;
  --outline:#8e9199; --outline-variant:#3a3d44;
  --error:#ffb4ab; --success:#7bd88f;
  --shadow:0 1px 2px rgba(0,0,0,.5), 0 8px 24px rgba(0,0,0,.3);
  --shadow-lg:0 2px 8px rgba(0,0,0,.5), 0 30px 70px rgba(0,0,0,.5);
  --brand-a:#a8c7fa; --brand-b:#7bd88f;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --primary:#a8c7fa; --on-primary:#062e6f;
    --primary-container:#0842a0; --on-primary-container:#d3e3fd;
    --surface:#111318; --on-surface:#e2e2e9;
    --card:#1d2025; --on-card:#e2e2e9;
    --surface-variant:#2b2f36; --on-surface-variant:#c4c6d0;
    --outline:#8e9199; --outline-variant:#3a3d44;
    --error:#ffb4ab; --success:#7bd88f;
    --shadow:0 1px 2px rgba(0,0,0,.5), 0 8px 24px rgba(0,0,0,.3);
    --shadow-lg:0 2px 8px rgba(0,0,0,.5), 0 30px 70px rgba(0,0,0,.5);
    --brand-a:#a8c7fa; --brand-b:#7bd88f;
  }
}

*{box-sizing:border-box}
html{scroll-behavior:smooth; scroll-padding-top:88px}
body{
  margin:0; background:var(--surface); color:var(--on-surface);
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased; line-height:1.65;
}
a{color:var(--primary); text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%; display:block}
button{font:inherit; color:inherit; border:none; background:none; cursor:pointer}
code,kbd,pre{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace}
p code,li code,td code{background:var(--surface-variant); padding:1.5px 6px; border-radius:6px; font-size:.9em}

.wrap{max-width:var(--maxw); margin:0 auto; padding:0 20px}
.muted{color:var(--on-surface-variant)}

/* ---------- 顶栏 ---------- */
.topbar{
  position:sticky; top:0; z-index:50;
  background:var(--surface);
  background:color-mix(in srgb, var(--surface) 86%, transparent);
  backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .2s;
}
.topbar.scrolled{border-bottom-color:var(--outline-variant)}
.topbar-inner{
  max-width:var(--maxw); margin:0 auto; padding:0 20px;
  height:var(--nav-h); display:flex; align-items:center; gap:14px;
}
.brand{display:flex; align-items:center; gap:11px; color:inherit; text-decoration:none}
.brand:hover{text-decoration:none}
.brand .mark{
  width:38px; height:38px; border-radius:12px; flex:none; overflow:hidden;
  background:#fff; box-shadow:0 4px 12px rgba(56,140,50,.26);
}
.brand .mark img{width:100%; height:100%; object-fit:cover; display:block}
.brand b{font-size:16px; letter-spacing:.2px; font-weight:700}
.brand span{display:block; font-size:11.5px; color:var(--on-surface-variant); font-weight:400; line-height:1.3}
.nav{display:flex; align-items:center; gap:2px; margin-left:auto}
.nav a{
  padding:8px 13px; border-radius:999px; font-size:13.5px; color:var(--on-surface-variant);
  text-decoration:none; white-space:nowrap;
}
.nav a:hover{background:var(--surface-variant); color:var(--on-surface); text-decoration:none}
.nav a.on{background:var(--primary-container); color:var(--on-primary-container); font-weight:600}
.topbar .tools{display:flex; align-items:center; gap:6px; margin-left:6px}
.icon-btn{
  width:38px; height:38px; border-radius:12px; display:grid; place-items:center;
  color:var(--on-surface-variant); border:1px solid transparent;
}
.icon-btn:hover{background:var(--surface-variant); color:var(--on-surface)}
.icon-btn svg{width:19px; height:19px; stroke:currentColor; fill:none; stroke-width:1.7; stroke-linecap:round; stroke-linejoin:round}
.menu-btn{display:none}
@media (max-width:820px){
  .nav{
    position:absolute; left:12px; right:12px; top:calc(var(--nav-h) - 6px);
    flex-direction:column; align-items:stretch; gap:2px; padding:8px;
    background:var(--surface); border:1px solid var(--outline-variant);
    border-radius:var(--radius-md); box-shadow:var(--shadow-lg); display:none;
  }
  .nav.open{display:flex}
  .nav a{padding:11px 14px; font-size:14px}
  .menu-btn{display:grid}
  .topbar .tools{margin-left:auto}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:7px;
  min-height:44px; padding:0 22px; border-radius:999px;
  font-size:14.5px; font-weight:600; text-decoration:none; white-space:nowrap;
  transition:transform .12s ease, box-shadow .2s, background .2s;
}
.btn:hover{text-decoration:none; transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn.primary{background:var(--primary); color:var(--on-primary); box-shadow:0 6px 18px rgba(11,87,208,.28)}
.btn.tonal{background:var(--primary-container); color:var(--on-primary-container)}
.btn.outline{border:1px solid var(--outline-variant); color:var(--on-surface); background:var(--surface)}
.btn.ghost{color:var(--on-surface-variant); min-height:38px; padding:0 14px; font-weight:500}
.btn.sm{min-height:36px; padding:0 15px; font-size:13px}
.btn svg{width:17px; height:17px; stroke:currentColor; fill:none; stroke-width:1.9; stroke-linecap:round; stroke-linejoin:round}
.btn-row{display:flex; flex-wrap:wrap; gap:10px; align-items:center}
.btn.done{color:var(--success); border-color:color-mix(in srgb,var(--success) 42%,var(--outline-variant))}

/* ---------- 通用区块 ---------- */
section{position:relative}
.sec{padding:76px 0}
.sec.tight{padding:52px 0}
.eyebrow{
  display:inline-flex; align-items:center; gap:7px;
  padding:6px 13px; border-radius:999px; font-size:12.5px; font-weight:600;
  background:var(--primary-container); color:var(--on-primary-container);
}
.eyebrow .dot{width:6px; height:6px; border-radius:50%; background:currentColor; opacity:.7}
h1,h2,h3,h4{margin:0; line-height:1.25; letter-spacing:-.01em}
h2.title{font-size:clamp(24px,3.2vw,34px); font-weight:750}
.sec-head{max-width:640px; margin-bottom:34px}
.sec-head p{margin:12px 0 0; color:var(--on-surface-variant); font-size:15px}
.sec-head .eyebrow{margin-bottom:14px}

/* ---------- Hero ---------- */
.hero{padding:56px 0 40px; overflow:hidden}
.hero-grid{display:grid; grid-template-columns:1.05fr .95fr; gap:44px; align-items:center}
.hero h1{font-size:clamp(30px,4.4vw,50px); font-weight:800; letter-spacing:-.025em; margin:18px 0 0}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(96deg,var(--brand-a),var(--brand-b));
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.hero .lead{margin:18px 0 0; font-size:16.5px; color:var(--on-surface-variant); max-width:520px}
.hero .btn-row{margin-top:28px}
.hero-facts{display:flex; flex-wrap:wrap; gap:22px; margin-top:34px; padding-top:22px; border-top:1px solid var(--outline-variant)}
.hero-facts div{font-size:12.5px; color:var(--on-surface-variant)}
.hero-facts b{display:block; font-size:20px; font-weight:750; color:var(--on-surface); line-height:1.3}
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr; gap:34px}
  .hero{padding:36px 0 24px}
  .hero .lead{max-width:none}
}

/* 手机壳 */
.phone-stage{position:relative; display:flex; justify-content:center}
.phone-stage::before{
  content:""; position:absolute; inset:-8% -6% -4%;
  background:radial-gradient(60% 60% at 60% 40%, color-mix(in srgb, var(--primary) 22%, transparent), transparent 70%);
  filter:blur(8px); z-index:0; pointer-events:none;
}
.phone{
  position:relative; z-index:1; width:min(300px,72vw);
  padding:9px; border-radius:40px;
  background:linear-gradient(160deg,#2a2e36,#111318 40%,#20242b);
  box-shadow:var(--shadow-lg);
}
.phone::after{
  content:""; position:absolute; top:16px; left:50%; transform:translateX(-50%);
  width:74px; height:6px; border-radius:999px; background:rgba(255,255,255,.22);
}
.phone-screen{
  border-radius:32px; overflow:hidden; background:#000; aspect-ratio:1080/2340;
}
.phone-screen img{width:100%; height:100%; object-fit:cover; object-position:top}

/* ---------- 功能格子（复用 WebUI 的 .fn-grid） ---------- */
.fn-grid{
  display:grid; grid-template-columns:repeat(4,1fr); gap:22px 10px;
  background:var(--card); border:1px solid var(--outline-variant);
  border-radius:var(--radius-lg); padding:26px 14px;
}
.fn{display:flex; flex-direction:column; align-items:center; gap:8px; text-align:center}
.fn-icon{
  width:52px; height:52px; border-radius:15px; display:grid; place-items:center;
  background:var(--surface-variant); border:1px solid var(--outline-variant);
  font-size:15px; font-weight:700; color:var(--on-surface);
  transition:transform .16s ease, background .2s, color .2s;
}
.fn:hover .fn-icon{transform:translateY(-2px); background:var(--primary-container); color:var(--on-primary-container); border-color:transparent}
.fn span{font-size:12.5px; color:var(--on-surface); line-height:1.35}
.fn span small{display:block; font-size:11px; color:var(--on-surface-variant)}
@media (max-width:760px){
  .fn-grid{grid-template-columns:repeat(3,1fr); gap:20px 6px; padding:22px 8px}
  .fn-icon{width:46px; height:46px; border-radius:13px; font-size:13.5px}
  .fn span{font-size:11.5px}
}

/* ---------- 能力分栏 ---------- */
.split{display:grid; grid-template-columns:1fr 1fr; gap:52px; align-items:center}
.split.rev .split-media{order:2}
.split-copy h3{font-size:clamp(21px,2.6vw,27px); font-weight:750; margin-bottom:12px}
.split-copy p{color:var(--on-surface-variant); font-size:15px; margin:0 0 18px}
.ticks{list-style:none; margin:0; padding:0; display:grid; gap:11px}
.ticks li{position:relative; padding-left:29px; font-size:14px; color:var(--on-surface-variant)}
.ticks li::before{
  content:""; position:absolute; left:0; top:.42em; width:17px; height:17px; border-radius:50%;
  background:var(--primary-container);
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230b57d0' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'><path d='M20 6L9 17l-5-5'/></svg>");
  background-size:11px 11px; background-position:center; background-repeat:no-repeat;
}
.split-media{display:flex; gap:16px; justify-content:center}
@media (max-width:900px){
  .split{grid-template-columns:1fr; gap:28px}
  .split.rev .split-media{order:0}
}

/* 小号手机（用于并排展示） */
.phone.sm{width:min(210px,44vw); padding:7px; border-radius:30px}
.phone.sm::after{width:52px; height:5px; top:12px}
.phone.sm .phone-screen{border-radius:24px}

/* 聊天截图（B 站 bot） */
.chat-shot{
  width:min(230px,52vw); border-radius:var(--radius-lg); overflow:hidden;
  box-shadow:var(--shadow); border:1px solid var(--outline-variant); background:#000;
}
.chat-shot img{width:100%}

/* ---------- 截图墙 ---------- */
.shots{
  display:grid; grid-template-columns:repeat(5,1fr); gap:16px; align-items:start;
}
.shot{
  border-radius:var(--radius-md); overflow:hidden; cursor:zoom-in;
  border:1px solid var(--outline-variant); background:var(--card);
  box-shadow:var(--shadow); transition:transform .18s ease, box-shadow .2s;
}
.shot:hover{transform:translateY(-3px); box-shadow:var(--shadow-lg)}
.shot img{width:100%; aspect-ratio:1080/2340; object-fit:cover; object-position:top}
.shot .cap{font-size:12px; color:var(--on-surface-variant); padding:9px 11px; text-align:center}
@media (max-width:900px){
  .shots{grid-template-columns:repeat(3,1fr); gap:10px}
  .shot:nth-child(n+4){display:none}
}

/* ---------- 加群 / 二维码 ---------- */
.join-grid{display:grid; grid-template-columns:1.05fr .95fr; gap:44px; align-items:center}
.join-copy h3{font-size:clamp(21px,2.6vw,27px); font-weight:750; margin:14px 0 12px}
.join-copy p{color:var(--on-surface-variant); font-size:15px; margin:0 0 18px}
.join-copy .btn-row{margin-top:22px}
.qr-card{display:flex; flex-direction:column; align-items:center; gap:14px}
.qr-card img{
  width:min(268px,64vw); border-radius:16px; display:block; cursor:zoom-in;
  box-shadow:var(--shadow-lg); border:1px solid var(--outline-variant);
}
.qr-card .num{font-size:12.5px; color:var(--on-surface-variant); letter-spacing:.02em}
.qr-card .num b{color:var(--on-surface); font-weight:700; letter-spacing:.04em}
@media (max-width:900px){
  .join-grid{grid-template-columns:1fr; gap:28px}
  .qr-card{order:-1}
}

/* ---------- 部署方式对比 ---------- */
.compare{display:grid; grid-template-columns:1fr 1fr; gap:18px}
.plan{
  border:1px solid var(--outline-variant); border-radius:var(--radius-lg);
  background:var(--card); padding:26px; display:flex; flex-direction:column;
}
.plan.hot{border-color:transparent; background:linear-gradient(160deg,color-mix(in srgb,var(--primary) 12%,var(--card)),var(--card))}
.plan h4{font-size:18px; font-weight:750; display:flex; align-items:center; gap:8px}
.plan .tag{font-size:11px; font-weight:700; padding:3px 9px; border-radius:999px; background:var(--primary); color:var(--on-primary)}
.plan p{font-size:13.5px; color:var(--on-surface-variant); margin:8px 0 16px}
.plan ul{list-style:none; margin:0 0 22px; padding:0; display:grid; gap:9px; font-size:13.5px; color:var(--on-surface-variant)}
.plan li::before{content:"·"; margin-right:8px; color:var(--primary); font-weight:900}
.plan .btn{margin-top:auto; align-self:flex-start}
@media (max-width:760px){ .compare{grid-template-columns:1fr} }

/* ---------- 大 CTA ---------- */
.cta{
  position:relative; overflow:hidden; border-radius:var(--radius-xl);
  padding:52px 40px; text-align:center; color:#fff;
  background:linear-gradient(120deg,#062e6f,#0b57d0 55%,#12724a);
  box-shadow:var(--shadow-lg);
}
.cta::before{
  content:""; position:absolute; inset:0;
  background:radial-gradient(70% 90% at 82% 10%, rgba(255,255,255,.22), transparent 60%);
}
.cta > *{position:relative}
.cta h2{font-size:clamp(23px,3.2vw,34px); font-weight:800}
.cta p{margin:12px auto 26px; max-width:560px; color:rgba(255,255,255,.86); font-size:15px}
.cta .btn-row{justify-content:center}
.cta .btn.primary{background:#fff; color:#062e6f; box-shadow:0 10px 26px rgba(0,0,0,.24)}
.cta .btn.outline{background:rgba(255,255,255,.12); border-color:rgba(255,255,255,.34); color:#fff}
.cta .fine{margin-top:20px; font-size:12px; color:rgba(255,255,255,.68)}
@media (max-width:600px){ .cta{padding:38px 22px} }

/* ---------- 页脚 ---------- */
footer{border-top:1px solid var(--outline-variant); padding:44px 0 34px; margin-top:20px}
.foot-grid{display:flex; flex-wrap:wrap; gap:32px; justify-content:space-between}
.foot-brand{max-width:330px}
.foot-brand .brand{margin-bottom:12px}
.foot-brand p{font-size:13px; color:var(--on-surface-variant); margin:0}
.foot-cols{display:flex; gap:56px; flex-wrap:wrap}
.foot-cols h5{margin:0 0 10px; font-size:12.5px; letter-spacing:.06em; text-transform:uppercase; color:var(--on-surface-variant); font-weight:700}
.foot-cols a{display:block; font-size:13.5px; color:var(--on-surface); padding:3px 0; text-decoration:none}
.foot-cols a:hover{color:var(--primary)}
.foot-bottom{
  margin-top:34px; padding-top:20px; border-top:1px solid var(--outline-variant);
  display:flex; flex-wrap:wrap; gap:10px; justify-content:space-between;
  font-size:12px; color:var(--on-surface-variant);
}

/* ---------- 图片放大 ---------- */
.lightbox{
  position:fixed; inset:0; z-index:200; display:none;
  background:rgba(8,10,14,.86); backdrop-filter:blur(6px);
  align-items:center; justify-content:center; padding:28px;
}
.lightbox.on{display:flex}
.lightbox img{max-width:min(560px,92vw); max-height:88vh; border-radius:var(--radius-md); box-shadow:0 30px 80px rgba(0,0,0,.6)}
.lightbox .close{position:absolute; top:20px; right:22px; color:#fff; font-size:26px; line-height:1; padding:8px}

/* ============================================================
   文档页
   ============================================================ */
.docs-head{padding:34px 0 26px; border-bottom:1px solid var(--outline-variant)}
.docs-head h1{font-size:clamp(26px,3.4vw,36px); font-weight:800; margin:12px 0 0}
.docs-head p{margin:12px 0 0; color:var(--on-surface-variant); max-width:640px; font-size:15px}
.docs-head p code{background:var(--surface-variant); padding:1.5px 6px; border-radius:6px; font-size:.9em}
.docs-layout{display:grid; grid-template-columns:236px 1fr; gap:44px; padding:34px 0 70px; align-items:start}
.toc{position:sticky; top:calc(var(--nav-h) + 18px)}
.toc h5{margin:0 0 10px; font-size:11.5px; letter-spacing:.08em; text-transform:uppercase; color:var(--on-surface-variant); font-weight:700}
.toc a{
  display:block; padding:7px 12px; border-radius:9px; font-size:13.5px;
  color:var(--on-surface-variant); text-decoration:none; border-left:2px solid transparent;
}
.toc a:hover{background:var(--surface-variant); color:var(--on-surface); text-decoration:none}
.toc a.on{color:var(--primary); font-weight:600; background:var(--surface-variant); background:color-mix(in srgb,var(--primary) 8%,transparent); border-left-color:var(--primary)}
.toc .mini-cta{margin-top:18px; padding:14px; border-radius:var(--radius-md); background:var(--card); border:1px solid var(--outline-variant)}
.toc .mini-cta p{margin:0 0 10px; font-size:12.5px; color:var(--on-surface-variant); line-height:1.5}

.doc-body{min-width:0}
.doc-sec{padding:0 0 40px; margin-bottom:36px; border-bottom:1px solid var(--outline-variant)}
.doc-sec:last-child{border-bottom:none}
.doc-sec h2{font-size:22px; font-weight:750; margin:0 0 6px; scroll-margin-top:88px}
.doc-sec > p{color:var(--on-surface-variant); font-size:14.5px; margin:10px 0 16px}
.doc-sec h3{font-size:16px; font-weight:700; margin:26px 0 8px}
.doc-sec p, .doc-sec li{font-size:14.5px}
.doc-sec ul,.doc-sec ol{padding-left:22px; color:var(--on-surface-variant); margin:10px 0 16px}
.doc-sec li{margin:5px 0}
.doc-sec strong{color:var(--on-surface); font-weight:650}
.doc-sec code{
  background:var(--surface-variant); padding:1.5px 6px; border-radius:6px;
  font-size:.9em; word-break:break-word;
}
.note{
  display:flex; gap:11px; padding:14px 16px; border-radius:var(--radius-md);
  background:var(--card); border:1px solid var(--outline-variant);
  font-size:13.5px; color:var(--on-surface-variant); margin:16px 0;
}
.note b{color:var(--on-surface)}
.note .ico{flex:none; font-weight:900; color:var(--primary)}
.note.warn{border-color:color-mix(in srgb,var(--error) 34%,var(--outline-variant))}
.note.warn .ico{color:var(--error)}

/* 代码块 */
.code{
  position:relative; margin:14px 0 20px; border-radius:var(--radius-md);
  background:#0f1216; border:1px solid #262b33; overflow:hidden;
}
:root[data-theme="light"] .code{background:#12161c}
.code pre{margin:0; padding:16px 52px 16px 18px; overflow-x:auto}
.code code{background:none; padding:0; color:#dfe4ea; font-size:13px; line-height:1.75; white-space:pre}
.code .copy{
  position:absolute; top:8px; right:8px; padding:5px 10px; border-radius:8px;
  font-size:11.5px; color:#aab3bf; background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.1);
}
.code .copy:hover{background:rgba(255,255,255,.14); color:#fff}
.code .copy.done{color:#7bd88f; border-color:rgba(123,216,143,.4)}
.code .lang{
  position:absolute; top:9px; left:18px; font-size:10.5px; letter-spacing:.08em;
  text-transform:uppercase; color:#5f6b7a; font-weight:700; pointer-events:none;
}
.code.has-lang pre{padding-top:32px}

/* 表格 */
.tbl{width:100%; border-collapse:collapse; margin:14px 0 20px; font-size:13.5px}
.tbl th,.tbl td{text-align:left; padding:10px 12px; border-bottom:1px solid var(--outline-variant); vertical-align:top}
.tbl th{font-size:12px; letter-spacing:.04em; text-transform:uppercase; color:var(--on-surface-variant); font-weight:700; white-space:nowrap}
.tbl td code{white-space:nowrap}
.tbl tr:last-child td{border-bottom:none}
.tbl-wrap{overflow-x:auto}

/* 文档里的托管卡片 */
.docs-cta{
  display:flex; flex-wrap:wrap; gap:18px; align-items:center; justify-content:space-between;
  padding:22px 24px; border-radius:var(--radius-lg); margin:22px 0 6px;
  background:linear-gradient(120deg,color-mix(in srgb,var(--primary) 14%,var(--card)),var(--card));
  border:1px solid var(--outline-variant);
}
.docs-cta h4{margin:0 0 4px; font-size:16px; font-weight:750}
.docs-cta p{margin:0; font-size:13px; color:var(--on-surface-variant)}
.docs-cta .qr-mini{
  width:104px; flex:none; border-radius:10px; cursor:zoom-in;
  box-shadow:var(--shadow); border:1px solid var(--outline-variant);
}

/* FAQ */
.faq{border:1px solid var(--outline-variant); border-radius:var(--radius-md); overflow:hidden; margin:14px 0}
.faq details{border-bottom:1px solid var(--outline-variant)}
.faq details:last-child{border-bottom:none}
.faq summary{
  cursor:pointer; padding:14px 16px; font-size:14px; font-weight:600;
  display:flex; align-items:center; gap:10px; list-style:none;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"＋"; color:var(--primary); font-weight:900; font-size:15px}
.faq details[open] summary::before{content:"－"}
.faq .ans{padding:0 16px 16px 41px; font-size:13.5px; color:var(--on-surface-variant)}
.faq .ans p{margin:0 0 8px}
.faq .ans p:last-child{margin:0}

/* 步骤条 */
.steps{counter-reset:s; list-style:none; padding:0; margin:16px 0 20px}
.steps li{
  position:relative; padding:0 0 18px 40px; counter-increment:s;
  font-size:14px; color:var(--on-surface-variant);
}
.steps li::before{
  content:counter(s); position:absolute; left:0; top:1px;
  width:25px; height:25px; border-radius:50%; display:grid; place-items:center;
  background:var(--primary-container); color:var(--on-primary-container);
  font-size:12px; font-weight:800;
}
.steps li::after{
  content:""; position:absolute; left:12px; top:29px; bottom:2px; width:1px; background:var(--outline-variant);
}
.steps li:last-child{padding-bottom:0}
.steps li:last-child::after{display:none}
.steps li b{color:var(--on-surface)}

@media (max-width:900px){
  .docs-layout{grid-template-columns:1fr; gap:0}
  .toc{position:static; margin-bottom:24px; display:flex; flex-wrap:wrap; gap:6px}
  .toc h5{width:100%}
  .toc a{border-left:none; border:1px solid var(--outline-variant); border-radius:999px; padding:6px 12px; font-size:12.5px}
  .toc a.on{border-color:transparent}
  .toc .mini-cta{width:100%; margin-top:12px}
  .docs-head{padding:24px 0 20px}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important; animation:none !important}
  html{scroll-behavior:auto}
}