/* 浮光AI 文档站 — 设计系统 v2 (与主站 aiz.naiyouai.com 同一视觉语言) */
@font-face{font-family:"Public Sans";font-style:normal;font-weight:100 900;font-display:swap;src:url(public-sans.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

:root{
  --bg:#ffffff;--bg-soft:#f6f7f9;--bg-elev:#ffffff;--bg-inset:#fafbfc;--bar:rgba(255,255,255,.82);
  --fg:#0b0d12;--fg-2:#394150;--muted:#6b7280;--faint:#9aa1ad;
  --border:#e9eaee;--border-2:#dcdfe5;
  --brand:#42a6ff;--brand-2:#2f94f5;--brand-ink:#1273de;--brand-soft:rgba(66,166,255,.11);--brand-line:rgba(66,166,255,.45);
  --violet:#9b7bff;--violet-soft:rgba(155,123,255,.12);--violet-ink:#6d4fe0;
  --grad:linear-gradient(95deg,#3f9bff 0%,#9b7bff 55%,#b14cf5 100%);
  --ok:#12a150;--ok-soft:rgba(18,161,80,.1);--ok-line:rgba(18,161,80,.3);
  --warn:#b96a00;--warn-soft:rgba(245,158,11,.12);--warn-line:rgba(245,158,11,.38);
  --danger:#d92d20;--danger-soft:rgba(217,45,32,.08);
  --code-bg:#0d1117;--code-fg:#e6edf3;--code-line:#222933;--code-muted:#8b949e;--code-tab:#1f2630;
  --shadow-1:0 1px 2px rgba(16,24,40,.05);
  --shadow-2:0 6px 18px -6px rgba(16,24,40,.10),0 1px 2px rgba(16,24,40,.04);
  --shadow-3:0 28px 56px -20px rgba(30,64,120,.22),0 2px 6px rgba(16,24,40,.05);
  --glow-a:rgba(66,166,255,.20);--glow-b:rgba(155,123,255,.18);--glow-c:rgba(177,76,245,.09);--grid:rgba(11,13,18,.045);
  --r:16px;--r-sm:12px;--r-xs:8px;--top:60px;
  --sans:"Public Sans",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Monaco,Consolas,"Liberation Mono",monospace;
  color-scheme:light;
}
:root[data-theme="dark"]{
  --bg:#090b10;--bg-soft:#10131a;--bg-elev:#12151d;--bg-inset:#0e1117;--bar:rgba(9,11,16,.78);
  --fg:#eef0f5;--fg-2:#c3c8d3;--muted:#8d95a5;--faint:#646c7b;
  --border:#1d222d;--border-2:#2a303d;
  --brand-ink:#6cb9ff;--brand-soft:rgba(66,166,255,.14);--brand-line:rgba(66,166,255,.5);
  --violet-soft:rgba(155,123,255,.16);--violet-ink:#b9a4ff;
  --ok:#3fb950;--ok-soft:rgba(63,185,80,.13);--ok-line:rgba(63,185,80,.35);
  --warn:#f0a53a;--warn-soft:rgba(245,158,11,.12);--warn-line:rgba(245,158,11,.35);
  --danger:#ff6b5e;--danger-soft:rgba(255,107,94,.1);
  --code-bg:#0b0e14;--code-line:#1c222c;--code-tab:#1a2029;
  --shadow-2:0 6px 18px -6px rgba(0,0,0,.5);--shadow-3:0 28px 56px -20px rgba(0,0,0,.65),0 0 0 1px rgba(255,255,255,.02);
  --glow-a:rgba(66,166,255,.16);--glow-b:rgba(155,123,255,.15);--glow-c:rgba(177,76,245,.08);--grid:rgba(255,255,255,.04);
  color-scheme:dark;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#090b10;--bg-soft:#10131a;--bg-elev:#12151d;--bg-inset:#0e1117;--bar:rgba(9,11,16,.78);
  --fg:#eef0f5;--fg-2:#c3c8d3;--muted:#8d95a5;--faint:#646c7b;
  --border:#1d222d;--border-2:#2a303d;
  --brand-ink:#6cb9ff;--brand-soft:rgba(66,166,255,.14);--brand-line:rgba(66,166,255,.5);
  --violet-soft:rgba(155,123,255,.16);--violet-ink:#b9a4ff;
  --ok:#3fb950;--ok-soft:rgba(63,185,80,.13);--ok-line:rgba(63,185,80,.35);
  --warn:#f0a53a;--warn-soft:rgba(245,158,11,.12);--warn-line:rgba(245,158,11,.35);
  --danger:#ff6b5e;--danger-soft:rgba(255,107,94,.1);
  --code-bg:#0b0e14;--code-line:#1c222c;--code-tab:#1a2029;
  --shadow-2:0 6px 18px -6px rgba(0,0,0,.5);--shadow-3:0 28px 56px -20px rgba(0,0,0,.65),0 0 0 1px rgba(255,255,255,.02);
  --glow-a:rgba(66,166,255,.16);--glow-b:rgba(155,123,255,.15);--glow-c:rgba(177,76,245,.08);--grid:rgba(255,255,255,.04);
  color-scheme:dark;
}}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--top) + 20px);-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:15.5px/1.75 var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
a{color:var(--brand-ink);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}
img,svg{display:block;max-width:100%}
button{font:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
::selection{background:rgba(66,166,255,.28)}
.ic{width:18px;height:18px;flex:none;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.ic-sm{width:15px;height:15px}.ic-lg{width:20px;height:20px}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- 顶栏 ---------- */
.topbar{position:sticky;top:0;z-index:50;background:var(--bar);-webkit-backdrop-filter:saturate(180%) blur(14px);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--border)}
.topbar-in{max-width:1360px;margin:0 auto;min-height:var(--top);padding:0 24px;display:flex;align-items:center;gap:26px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;letter-spacing:-.2px;color:var(--fg);white-space:nowrap}
.brand:hover{text-decoration:none}
.brand img{width:28px;height:28px;border-radius:8px}
.brand .tag{font-size:11.5px;font-weight:600;color:var(--brand-ink);background:var(--brand-soft);padding:2px 9px;border-radius:99px;letter-spacing:0}
.nav{display:flex;gap:2px;min-width:0}
.nav a{padding:7px 12px;border-radius:10px;color:var(--muted);font-size:14px;font-weight:500;white-space:nowrap;transition:color .15s,background .15s}
.nav a:hover{color:var(--fg);background:var(--bg-soft);text-decoration:none}
.nav a.active{color:var(--fg);font-weight:600;background:var(--bg-soft)}
.spacer{flex:1}
.actions{display:flex;align-items:center;gap:8px}
.icon-btn{width:36px;height:36px;display:grid;place-items:center;border-radius:10px;border:1px solid transparent;background:transparent;color:var(--fg-2);cursor:pointer;transition:background .15s}
.icon-btn:hover{background:var(--bg-soft)}
.icon-btn .moon{display:none}
:root[data-theme="dark"] .icon-btn .sun{display:none}:root[data-theme="dark"] .icon-btn .moon{display:block}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:42px;padding:0 20px;border-radius:13px;font-weight:600;font-size:14.5px;border:1px solid transparent;cursor:pointer;white-space:nowrap;transition:transform .15s,box-shadow .15s,background .15s,border-color .15s}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:linear-gradient(180deg,#4dabff,#2f94f5);color:#fff;box-shadow:0 8px 20px -8px rgba(47,148,245,.75),inset 0 1px 0 rgba(255,255,255,.25)}
.btn-primary:hover{box-shadow:0 12px 26px -8px rgba(47,148,245,.85),inset 0 1px 0 rgba(255,255,255,.25)}
.btn-ghost{background:var(--bg-elev);border-color:var(--border-2);color:var(--fg);box-shadow:var(--shadow-1)}
.btn-ghost:hover{border-color:var(--brand-line)}
.btn-sm{height:36px;padding:0 14px;font-size:13.5px;border-radius:10px}

/* ---------- 文档三栏布局 ---------- */
.shell{max-width:1360px;margin:0 auto;padding:0 24px;display:grid;grid-template-columns:228px minmax(0,1fr) 204px;gap:56px}
.side{position:sticky;top:var(--top);align-self:start;height:calc(100vh - var(--top));overflow-y:auto;padding:30px 0 40px}
.side h6{margin:22px 12px 8px;font-size:11.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--faint)}
.side h6:first-child{margin-top:0}
.side a{display:flex;align-items:center;gap:10px;padding:8px 12px;margin:1px 0;border-radius:10px;color:var(--fg-2);font-size:14px;font-weight:500;transition:background .15s,color .15s}
.side a:hover{background:var(--bg-soft);text-decoration:none;color:var(--fg)}
.side a.active{background:var(--brand-soft);color:var(--brand-ink);font-weight:600}
.side a .ext{margin-left:auto;opacity:.5}
.main{min-width:0;padding:46px 0 96px}
.prose{max-width:790px}
.toc{position:sticky;top:var(--top);align-self:start;max-height:calc(100vh - var(--top));overflow-y:auto;padding:50px 0 40px;font-size:13px}
.toc h6{margin:0 0 10px;font-size:11.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--faint)}
.toc a{display:block;padding:5px 0 5px 14px;border-left:2px solid var(--border);color:var(--muted);line-height:1.5;transition:color .15s,border-color .15s}
.toc a:hover{color:var(--fg);text-decoration:none}
.toc a.l3{padding-left:26px}
.toc a.on{border-left-color:var(--brand);color:var(--brand-ink);font-weight:600}

/* ---------- 正文排版 ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;color:var(--brand-ink);background:var(--brand-soft);padding:4px 11px;border-radius:99px;margin-bottom:14px}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--brand)}
h1{font-size:36px;line-height:1.2;font-weight:800;letter-spacing:-.9px;margin:0 0 14px}
.lead{font-size:17px;line-height:1.75;color:var(--fg-2);margin:0 0 8px;max-width:680px}
h2{font-size:24px;line-height:1.3;font-weight:750;letter-spacing:-.4px;margin:64px 0 14px}
h3{font-size:17.5px;line-height:1.4;font-weight:700;margin:34px 0 10px}
p{margin:12px 0;color:var(--fg-2)}
.prose li{color:var(--fg-2);margin:6px 0}
.prose ul,.prose ol{padding-left:22px}
strong,b{color:var(--fg);font-weight:650}
.muted{color:var(--muted)}
hr{border:0;border-top:1px solid var(--border);margin:56px 0}
code{font-family:var(--mono);font-size:.88em}
:not(pre)>code{background:var(--bg-soft);border:1px solid var(--border);padding:1.5px 6px;border-radius:6px;color:var(--fg);white-space:nowrap}
.meta{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 0}
.pill{display:inline-flex;align-items:center;gap:7px;height:30px;padding:0 12px;border:1px solid var(--border);border-radius:99px;background:var(--bg-elev);font-size:13px;color:var(--fg-2);font-weight:500}
.pill .ic{color:var(--brand-ink)}
.page-head{position:relative}
.page-head::before{content:"";position:absolute;z-index:-1;left:-56px;right:0;top:-46px;height:330px;background:radial-gradient(420px 200px at 22% 45%,var(--glow-a),transparent 70%),radial-gradient(380px 190px at 70% 30%,var(--glow-b),transparent 70%);pointer-events:none}

/* ---------- 提示块 ---------- */
.callout{display:flex;gap:12px;padding:14px 16px;border-radius:var(--r-sm);border:1px solid var(--brand-line);background:var(--brand-soft);margin:18px 0;font-size:14.5px;line-height:1.7;color:var(--fg-2)}
.callout .ic{margin-top:3px;color:var(--brand-ink)}
.callout p{margin:0}.callout b{color:var(--fg)}
.callout.warn{border-color:var(--warn-line);background:var(--warn-soft)}.callout.warn .ic{color:var(--warn)}
.callout.ok{border-color:var(--ok-line);background:var(--ok-soft)}.callout.ok .ic{color:var(--ok)}

/* ---------- 代码块 ---------- */
.code{border-radius:14px;background:var(--code-bg);border:1px solid var(--code-line);overflow:hidden;margin:18px 0;box-shadow:var(--shadow-2)}
.code-bar{display:flex;align-items:center;gap:4px;min-height:44px;padding:6px 10px 6px 14px;border-bottom:1px solid var(--code-line)}
.code-dots{display:flex;gap:6px;margin-right:10px;flex:none}
.tabs{display:flex;gap:4px;min-width:0;overflow-x:auto;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.code-dots i{width:10px;height:10px;border-radius:50%;background:#3a414d}
.code-title{font:500 12px var(--mono);color:var(--code-muted)}
.tab{appearance:none;flex:none;border:0;background:transparent;white-space:nowrap;color:var(--code-muted);font:600 12.5px var(--sans);padding:6px 11px;border-radius:8px;cursor:pointer;transition:background .15s,color .15s}
.tab:hover{color:#dfe5ee}
.tab[aria-selected="true"]{background:var(--code-tab);color:#fff}
.copy{margin-left:auto;flex:none;white-space:nowrap;display:inline-flex;align-items:center;gap:6px;border:1px solid #2b3240;background:#151a22;color:#c9d1d9;font:500 12px var(--sans);padding:5px 10px;border-radius:8px;cursor:pointer;transition:border-color .15s,color .15s}
.copy:hover{border-color:#465066;color:#fff}
.copy.done{color:#3fb950;border-color:#238636}
.code pre{margin:0;padding:16px 18px;overflow:auto;font:13px/1.75 var(--mono);color:var(--code-fg);tab-size:2}
.code .pane[hidden]{display:none}
.code-out{border-top:1px solid var(--code-line)}
.code-out-h{display:flex;align-items:center;gap:10px;padding:9px 14px 0;font:600 11px var(--sans);letter-spacing:.08em;text-transform:uppercase;color:var(--code-muted)}
.status{display:inline-flex;align-items:center;gap:6px;font:600 11.5px var(--mono);color:#3fb950;background:rgba(63,185,80,.13);padding:2px 8px;border-radius:99px;letter-spacing:0;text-transform:none}
.status i{width:6px;height:6px;border-radius:50%;background:#3fb950}
.tk-s{color:#a5d6ff}.tk-c{color:#8b949e;font-style:italic}.tk-k{color:#ff7b72}.tk-n{color:#79c0ff}.tk-f{color:#d2a8ff}.tk-p{color:#7ee787}.tk-v{color:#ffa657}
.ph{color:#ffd580;background:rgba(255,213,128,.12);border-bottom:1px dashed rgba(255,213,128,.6);border-radius:3px;padding:0 2px}

/* ---------- 表格 ---------- */
.tbl{border:1px solid var(--border);border-radius:14px;overflow-x:auto;margin:18px 0;background:var(--bg-elev)}
table{width:100%;border-collapse:collapse;font-size:14px}
th{background:var(--bg-soft);text-align:left;font-weight:600;font-size:12.5px;color:var(--muted);padding:10px 16px;border-bottom:1px solid var(--border);white-space:nowrap}
td{padding:12px 16px;border-bottom:1px solid var(--border);vertical-align:top;color:var(--fg-2)}
tr:last-child td{border-bottom:0}
tbody tr:hover td{background:var(--bg-inset)}
td.nw,.nw{white-space:nowrap}
.badge{display:inline-flex;align-items:center;gap:5px;height:22px;padding:0 8px;border-radius:99px;font-size:12px;font-weight:600;white-space:nowrap}
.badge.ok{color:var(--ok);background:var(--ok-soft)}.badge.no{color:var(--danger);background:var(--danger-soft)}
.badge.blue{color:var(--brand-ink);background:var(--brand-soft)}.badge.violet{color:var(--violet-ink);background:var(--violet-soft)}
.method{display:inline-block;font:700 11px var(--mono);padding:3px 7px;border-radius:6px;letter-spacing:.03em}
.method.post{color:var(--ok);background:var(--ok-soft)}.method.get{color:var(--brand-ink);background:var(--brand-soft)}

/* ---------- 卡片 ---------- */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(232px,1fr));gap:14px;margin:20px 0}
.card{position:relative;display:block;padding:20px;border:1px solid var(--border);border-radius:var(--r);background:var(--bg-elev);color:inherit;transition:transform .18s,box-shadow .18s,border-color .18s}
a.card:hover{text-decoration:none;transform:translateY(-2px);border-color:var(--brand-line);box-shadow:var(--shadow-2)}
.card h3{margin:0 0 4px;font-size:16px}
.card p{margin:0;font-size:14px;line-height:1.65;color:var(--muted)}
.card .go{position:absolute;right:16px;top:20px;color:var(--faint);transition:transform .18s,color .18s}
a.card:hover .go{transform:translateX(3px);color:var(--brand-ink)}
.ico{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand-ink);margin-bottom:14px}
.ico.v{background:var(--violet-soft);color:var(--violet-ink)}.ico.g{background:var(--ok-soft);color:var(--ok)}.ico.o{background:var(--warn-soft);color:var(--warn)}

.kv{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:12px;margin:18px 0}
.kv-item{border:1px solid var(--border);border-radius:14px;padding:13px 14px 13px 16px;background:var(--bg-elev)}
.kv-k{font-size:12px;color:var(--muted);margin-bottom:3px}
.kv-v{display:flex;align-items:center;justify-content:space-between;gap:10px;font:600 13.5px/1.5 var(--mono);color:var(--fg);word-break:break-all}
.mini-copy{flex:none;width:30px;height:30px;display:grid;place-items:center;border-radius:8px;border:1px solid var(--border);background:var(--bg-soft);color:var(--muted);cursor:pointer;transition:color .15s,border-color .15s}
.mini-copy:hover{color:var(--brand-ink);border-color:var(--brand-line)}
.mini-copy.done{color:var(--ok);border-color:var(--ok-line)}

/* ---------- 流程图 ---------- */
.flow{display:grid;grid-template-columns:1fr 46px 1.15fr 46px 1fr;align-items:stretch;margin:26px 0 6px}
.node{border:1px solid var(--border);border-radius:var(--r);padding:16px 14px;background:var(--bg-elev);text-align:center;display:flex;flex-direction:column;justify-content:center;gap:4px;box-shadow:var(--shadow-1)}
.node small{font-size:11.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--faint)}
.node b{font-size:15px}
.node span{font-size:12.5px;color:var(--muted);line-height:1.5}
.node.core{border-color:transparent;background:var(--grad);box-shadow:0 18px 36px -16px rgba(124,108,255,.75)}
.node.core small{color:rgba(255,255,255,.75)}.node.core b{color:#fff}.node.core span{color:rgba(255,255,255,.85)}
.arr{display:grid;place-items:center;color:var(--faint)}
.arr svg{width:30px;height:14px}
.arr .dash{stroke-dasharray:4 4;animation:dash 1.2s linear infinite}
@keyframes dash{to{stroke-dashoffset:-16}}

.jump{display:grid;grid-template-columns:repeat(6,1fr);gap:8px;margin:26px 0 0}
.jump a{display:flex;flex-direction:column;gap:6px;padding:12px 10px 11px;border:1px solid var(--border);border-radius:var(--r-sm);background:var(--bg-elev);color:var(--fg);font-size:13px;font-weight:600;line-height:1.35;transition:border-color .15s,transform .15s,box-shadow .15s}
.jump a:hover{text-decoration:none;border-color:var(--brand-line);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.jump b{width:22px;height:22px;border-radius:7px;background:var(--brand-soft);color:var(--brand-ink);display:grid;place-items:center;font-size:12px}

/* ---------- 步骤 + 图解 ---------- */
.steps{margin-top:54px}
.step{position:relative;padding:0 0 60px 62px}
.step::before{content:"";position:absolute;left:19px;top:50px;bottom:8px;width:2px;border-radius:2px;background:linear-gradient(var(--border-2),var(--border) 70%,transparent)}
.step:last-child{padding-bottom:8px}.step:last-child::before{display:none}
.step-n{position:absolute;left:0;top:0;width:40px;height:40px;border-radius:13px;background:var(--grad);color:#fff;font-weight:750;font-size:16px;display:grid;place-items:center;box-shadow:0 10px 22px -10px rgba(124,108,255,.85)}
.step>h2{margin:0;padding-top:5px;font-size:22px}
.step .kicker{font-size:12.5px;color:var(--faint);font-weight:600;margin-top:2px}

.fig{margin:22px 0 6px}
.browser{border:1px solid var(--border-2);border-radius:14px;background:var(--bg-elev);box-shadow:var(--shadow-3);overflow:hidden}
.browser-bar{display:flex;align-items:center;gap:12px;padding:10px 14px;background:var(--bg-soft);border-bottom:1px solid var(--border)}
.dots{display:flex;gap:6px;flex:none}
.dots i{width:10px;height:10px;border-radius:50%}
.dots i:nth-child(1){background:#ff5f57}.dots i:nth-child(2){background:#febc2e}.dots i:nth-child(3){background:#28c840}
.url{flex:1;max-width:400px;margin:0 auto;height:26px;display:flex;align-items:center;gap:7px;padding:0 10px;border-radius:8px;background:var(--bg);border:1px solid var(--border);font:12px var(--mono);color:var(--muted);overflow:hidden;white-space:nowrap}
.url .ic{width:12px;height:12px;color:var(--ok)}
.url b{color:var(--fg);font-weight:500}
.bar-pad{width:42px;flex:none}
.screen{position:relative;padding:30px 28px;font-size:13px;line-height:1.5;color:var(--fg);background:radial-gradient(520px 200px at 50% -40px,var(--glow-a),transparent 70%),var(--bg)}
.legend{list-style:none;display:grid;gap:9px;margin:18px 0 0;padding:0}
.legend li{display:flex;gap:11px;align-items:flex-start;font-size:14.5px;line-height:1.65;color:var(--fg-2);margin:0}
.legend .n{flex:none;width:22px;height:22px;margin-top:1px;border-radius:50%;background:var(--grad);color:#fff;font:700 12px/22px var(--sans);text-align:center}
.cap{font-size:12px;color:var(--faint);text-align:center;margin:10px 0 0}

.hs{position:absolute;z-index:3;width:24px;height:24px;border-radius:50%;background:var(--grad);color:#fff;font:700 12.5px/24px var(--sans);text-align:center;box-shadow:0 0 0 3px var(--bg),0 6px 14px -4px rgba(124,108,255,.9)}
.hs::after{content:"";position:absolute;inset:-3px;border-radius:50%;border:2px solid var(--violet);opacity:0;animation:ping 2.2s ease-out infinite}
@keyframes ping{0%{transform:scale(.8);opacity:.7}70%,100%{transform:scale(1.9);opacity:0}}
.hs.tr{top:-12px;right:-12px}.hs.tl{top:-12px;left:-12px}.hs.r{top:50%;right:-34px;margin-top:-12px}.hs.l{top:50%;left:-34px;margin-top:-12px}
.hl{position:relative}
.hl.ring{box-shadow:0 0 0 2px var(--bg),0 0 0 4px var(--brand-line);border-radius:11px}

/* 界面示意 (mock) 基础件 */
.mk-col{max-width:330px;margin:0 auto}
.mk-h{font-size:19px;font-weight:750;letter-spacing:-.3px;margin:0 0 4px}
.mk-sub{color:var(--muted);font-size:12.5px;margin:0 0 6px}
.mk-sub u{color:var(--fg);text-underline-offset:3px}
.mk-label{font-size:12px;font-weight:650;margin:13px 0 5px}
.mk-label small{font-weight:500;color:var(--muted)}
.mk-input{display:flex;align-items:center;justify-content:space-between;gap:8px;height:36px;padding:0 12px;border:1px solid var(--border-2);border-radius:11px;background:var(--bg);font-size:13px;color:var(--fg);white-space:nowrap;overflow:hidden}
.mk-input.ph-t{color:var(--faint)}
.mk-input .ic{width:14px;height:14px;color:var(--faint)}
.mk-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:36px;padding:0 15px;border-radius:11px;background:linear-gradient(180deg,#4dabff,#2f94f5);color:#fff;font-weight:650;font-size:13px;white-space:nowrap}
.mk-btn.block{display:flex;width:100%}
.mk-btn.ghost{background:var(--bg);border:1px solid var(--border-2);color:var(--fg)}
.mk-btn.sm{height:30px;padding:0 11px;font-size:12px;border-radius:9px}
.mk-row{display:flex;gap:8px;align-items:center}
.mk-row>.grow{flex:1;min-width:0}
.mk-check{display:flex;align-items:center;gap:9px;margin:16px 0 12px;padding:10px 12px;border:1px solid var(--border);border-radius:11px;background:var(--bg-soft);font-size:12px;color:var(--fg-2)}
.mk-check i{flex:none;width:15px;height:15px;border-radius:5px;background:var(--brand);display:grid;place-items:center}
.mk-check i svg{width:10px;height:10px;stroke:#fff;stroke-width:3.2;fill:none;stroke-linecap:round;stroke-linejoin:round}
.mk-check a{pointer-events:none}
.mk-turn{display:flex;align-items:center;gap:9px;margin-top:12px;height:38px;padding:0 12px;border:1px solid var(--border-2);border-radius:8px;background:var(--bg-soft);font-size:12px;color:var(--fg-2)}
.mk-turn i{width:16px;height:16px;border-radius:50%;background:var(--ok);display:grid;place-items:center}
.mk-turn i svg{width:10px;height:10px;stroke:#fff;stroke-width:3.2;fill:none;stroke-linecap:round;stroke-linejoin:round}
.mk-turn span{margin-left:auto;font-size:10.5px;color:var(--faint)}

.mk-plaza{display:grid;grid-template-columns:218px minmax(0,1fr);gap:16px;align-items:start}
.mk-panel{border:1px solid var(--border);border-radius:13px;background:var(--bg-elev);padding:12px}
.mk-panel h5{margin:0 0 8px;font-size:12px;font-weight:700}
.mk-g{display:flex;align-items:center;justify-content:space-between;gap:6px;padding:6px 8px;border-radius:8px;font-size:11.5px;color:var(--fg-2);white-space:nowrap}
.mk-g span{overflow:hidden;text-overflow:ellipsis}
.mk-g em{font:600 10.5px var(--mono);font-style:normal;color:var(--muted);background:var(--bg-soft);padding:1px 5px;border-radius:5px}
.mk-g.on{background:var(--brand-soft);color:var(--brand-ink);font-weight:650}
.mk-g.on em{background:var(--bg);color:var(--brand-ink)}
.mk-models{display:grid;grid-template-columns:minmax(0,1fr);gap:12px;align-content:start;padding-right:26px}
.mk-m{border:1px solid var(--border);border-radius:13px;background:var(--bg-elev);padding:13px}
.mk-m-h{display:flex;align-items:center;gap:9px}
.mk-m-h .lg{flex:none;width:28px;height:28px;border-radius:8px;display:grid;place-items:center;font:700 12px var(--sans);color:#fff}
.lg.an{background:#d97757}.lg.go{background:#4285f4}.lg.oa{background:#10a37f}
.mk-m-h b{display:block;font:650 12.5px var(--mono);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mk-m-h small{display:block;font-size:10.5px;color:var(--muted)}
.mk-cp{margin-left:auto;flex:none;width:26px;height:26px;border:1px solid var(--border);border-radius:8px;display:grid;place-items:center;color:var(--muted);background:var(--bg)}
.mk-cp .ic{width:13px;height:13px}
.mk-price{display:grid;grid-template-columns:1fr 1fr 1.5fr;gap:8px;align-items:end;margin-top:11px;padding-top:10px;border-top:1px dashed var(--border)}
.mk-price small{display:block;font-size:10.5px;color:var(--muted)}
.mk-price b{font:650 13px var(--mono)}
.mk-price b span{font-weight:500;font-size:10.5px;color:var(--faint)}
.mk-stat{display:flex;justify-content:flex-end;gap:10px;font-size:10.5px;color:var(--muted);white-space:nowrap}
.mk-stat b{color:var(--ok);font-weight:650}

.mk-pagebar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.mk-pagebar h4{margin:0;font-size:17px;font-weight:750}
.mk-dialog{max-width:400px;margin:0 auto;border:1px solid var(--border-2);border-radius:16px;background:var(--bg-elev);box-shadow:var(--shadow-3);padding:20px}
.mk-dialog h4{margin:0 0 2px;font-size:16px;font-weight:750}
.mk-menu{border:1px solid var(--border-2);border-radius:12px;background:var(--bg-elev);box-shadow:var(--shadow-2);padding:5px;margin-top:6px}
.mk-opt{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:7px 10px;border-radius:8px;font-size:12.5px;color:var(--fg-2)}
.mk-opt em{font:600 10.5px var(--mono);font-style:normal;color:var(--muted)}
.mk-opt.on{background:var(--brand-soft);color:var(--brand-ink);font-weight:650}
.mk-opt.on em{color:var(--brand-ink)}
.mk-switch{flex:none;width:32px;height:18px;border-radius:99px;background:var(--border-2);position:relative}
.mk-switch::after{content:"";position:absolute;left:2px;top:2px;width:14px;height:14px;border-radius:50%;background:#fff;box-shadow:0 1px 2px rgba(0,0,0,.25)}
.mk-foot{display:flex;justify-content:flex-end;gap:8px;margin-top:18px}
.mk-toast{display:flex;align-items:center;gap:10px;max-width:400px;margin:14px auto 0;padding:10px 12px;border:1px solid var(--ok-line);border-radius:12px;background:var(--ok-soft);font-size:12.5px}
.mk-toast code{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;background:transparent;border:0;padding:0;font-size:12.5px}
.mk-toast .ic{color:var(--ok);width:16px;height:16px}

.mk-table{width:100%;border:1px solid var(--border);border-radius:13px;background:var(--bg-elev)}
.mk-tr{display:grid;grid-template-columns:1.15fr 1.6fr .8fr .8fr .9fr .7fr;gap:8px;padding:10px 14px;border-bottom:1px solid var(--border);font-size:12px;align-items:center}
.mk-tr:last-child{border-bottom:0}
.mk-tr.h{background:var(--bg-soft);font-weight:650;color:var(--muted);font-size:11.5px;border-radius:12px 12px 0 0}
.mk-tr.on{background:var(--brand-soft)}
.mk-tr span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mk-tr .mono{font-family:var(--mono);font-size:11.5px}
.mk-tr .cost{font-family:var(--mono);font-weight:650;color:var(--fg)}

.mk-set{max-width:440px;margin:0 auto}
.mk-set-row{display:grid;grid-template-columns:92px 1fr;align-items:center;gap:12px;margin-bottom:10px}
.mk-set-row>label{font-size:12px;font-weight:650;color:var(--fg-2)}

/* ---------- 分组卡 (模型与价格) ---------- */
.gcards{display:grid;grid-template-columns:repeat(auto-fill,minmax(248px,1fr));gap:14px;margin:18px 0}
.gcard{display:flex;flex-direction:column;gap:12px;padding:18px;border:1px solid var(--border);border-radius:var(--r);background:var(--bg-elev);transition:border-color .18s,box-shadow .18s}
.gcard:hover{border-color:var(--brand-line);box-shadow:var(--shadow-2)}
.gcard-h{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.gcard-h b{font-size:15px;line-height:1.4}
.gcard-h small{display:block;font-size:12.5px;font-weight:500;color:var(--muted);margin-top:2px}
.disc{flex:none;text-align:right;font-weight:800;font-size:24px;line-height:1;letter-spacing:-.5px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;white-space:nowrap}
.disc small{display:block;font-size:11px;font-weight:600;letter-spacing:0;color:var(--faint);-webkit-text-fill-color:var(--faint);margin-top:5px}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{appearance:none;border:1px solid var(--border);background:var(--bg-soft);color:var(--fg-2);font:500 12px var(--mono);padding:3px 8px;border-radius:7px;cursor:pointer;transition:border-color .15s,color .15s}
.chip:hover{border-color:var(--brand-line);color:var(--brand-ink)}
.formula{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;padding:18px 20px;border:1px solid var(--border);border-radius:var(--r);background:var(--bg-elev);margin:18px 0}
.formula .t{padding:8px 14px;border-radius:11px;background:var(--bg-soft);font-weight:650;font-size:14.5px}
.formula .t small{display:block;font-size:11.5px;font-weight:500;color:var(--muted)}
.formula .t.res{background:var(--grad);color:#fff}.formula .t.res small{color:rgba(255,255,255,.8)}
.formula .op{font-size:18px;color:var(--faint);font-weight:600}

/* ---------- 常见问题 ---------- */
details.faq{border:1px solid var(--border);border-radius:var(--r-sm);background:var(--bg-elev);margin:10px 0;transition:border-color .15s}
details.faq[open]{border-color:var(--border-2)}
details.faq summary{display:flex;align-items:center;gap:12px;padding:14px 16px;font-weight:650;font-size:14.5px;cursor:pointer;list-style:none}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary code{font-weight:600}
details.faq summary .chev{margin-left:auto;color:var(--faint);transition:transform .2s}
details.faq[open] summary .chev{transform:rotate(180deg)}
.faq-b{padding:0 16px 14px;font-size:14.5px;color:var(--fg-2)}
.faq-b p{margin:0}

.pager{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:64px}
.pager a{display:block;padding:16px 18px;border:1px solid var(--border);border-radius:var(--r);color:var(--fg);transition:border-color .15s,box-shadow .15s}
.pager a:hover{text-decoration:none;border-color:var(--brand-line);box-shadow:var(--shadow-2)}
.pager small{display:block;font-size:12px;color:var(--muted);margin-bottom:2px}
.pager b{font-size:15px}
.pager .next{text-align:right}

.cta{position:relative;overflow:hidden;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;padding:24px 26px;border-radius:20px;border:1px solid var(--border);background:radial-gradient(420px 160px at 12% 0,var(--glow-a),transparent 70%),radial-gradient(420px 160px at 90% 100%,var(--glow-b),transparent 70%),var(--bg-elev);margin-top:44px}
.cta h3{margin:0 0 2px;font-size:18px}.cta p{margin:0;font-size:14px;color:var(--muted)}

/* ---------- 首页 ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--border)}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(640px 320px at 14% 22%,var(--glow-a),transparent 70%),radial-gradient(560px 300px at 82% 12%,var(--glow-b),transparent 70%),radial-gradient(460px 260px at 60% 92%,var(--glow-c),transparent 70%);pointer-events:none}
.hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:44px 44px;-webkit-mask-image:radial-gradient(70% 70% at 50% 30%,#000,transparent);mask-image:radial-gradient(70% 70% at 50% 30%,#000,transparent);pointer-events:none}
.hero-in{position:relative;z-index:1;max-width:1180px;margin:0 auto;padding:76px 24px 84px;display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr);gap:56px;align-items:center}
.hero h1{font-size:52px;line-height:1.12;letter-spacing:-1.5px;margin:0 0 18px}
.hero .lead{font-size:17.5px;max-width:520px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-note{display:flex;flex-wrap:wrap;gap:6px 18px;margin-top:22px;font-size:13px;color:var(--muted)}
.hero-note span{display:inline-flex;align-items:center;gap:6px}
.hero-note .ic{width:15px;height:15px;color:var(--ok)}
.hero .code{margin:0;box-shadow:var(--shadow-3)}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.section{padding:64px 0 0}
.section:last-of-type{padding-bottom:88px}
.section-h{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:6px}
.section-h h2{margin:0;font-size:26px}
.section-h p{margin:4px 0 0;color:var(--muted);font-size:15px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--border);border-radius:var(--r);background:var(--bg-elev);margin-top:-34px;position:relative;z-index:2;box-shadow:var(--shadow-2)}
.stat{padding:20px 22px;border-right:1px solid var(--border)}
.stat:last-child{border-right:0}
.stat b{display:block;font-size:26px;font-weight:800;letter-spacing:-.6px;line-height:1.2}
.stat span{font-size:13px;color:var(--muted)}
.trio{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:22px;counter-reset:t}
.trio .card{padding-top:18px}
.trio .num{font:800 13px var(--mono);color:var(--brand-ink);background:var(--brand-soft);width:28px;height:28px;border-radius:9px;display:grid;place-items:center;margin-bottom:12px}

/* ---------- 页脚 ---------- */
.foot{border-top:1px solid var(--border);margin-top:0}
.foot-in{max-width:1360px;margin:0 auto;padding:26px 24px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--muted)}
.foot-in nav{display:flex;flex-wrap:wrap;gap:18px}
.foot-in a{color:var(--muted)}.foot-in a:hover{color:var(--fg)}

.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);z-index:99;display:flex;align-items:center;gap:8px;padding:10px 16px;border-radius:12px;background:#11151c;color:#fff;font-size:13.5px;font-weight:500;box-shadow:0 14px 34px -10px rgba(0,0,0,.5);opacity:0;pointer-events:none;transition:opacity .2s,transform .2s}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast .ic{color:#3fb950;width:16px;height:16px}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){.shell{grid-template-columns:228px minmax(0,1fr);gap:44px}.toc{display:none}}
@media (max-width:980px){.hero-in{grid-template-columns:minmax(0,1fr);gap:38px;padding:56px 24px 72px}.hero h1{font-size:42px}}
@media (max-width:860px){
  :root{--top:102px}
  .topbar-in{flex-wrap:wrap;gap:0 12px;padding:0 16px}
  .brand{height:54px}.actions{height:54px}
  .nav{order:3;width:100%;overflow-x:auto;padding-bottom:10px;-webkit-overflow-scrolling:touch;scrollbar-width:none}
  .nav::-webkit-scrollbar{display:none}
  .shell{grid-template-columns:minmax(0,1fr);padding:0 16px}.side{display:none}
  .main{padding:30px 0 72px}
  .page-head::before{left:-16px;right:-16px;top:-30px}
  .wrap,.hero-in{padding-left:16px;padding-right:16px}
  h1{font-size:29px;letter-spacing:-.6px}.hero h1{font-size:34px;letter-spacing:-.9px}
  h2{font-size:21px;margin-top:48px}
  .lead{font-size:16px}
  .stats{grid-template-columns:repeat(2,1fr)}.stat:nth-child(2){border-right:0}.stat:nth-child(-n+2){border-bottom:1px solid var(--border)}
  .trio{grid-template-columns:minmax(0,1fr)}
  .flow{grid-template-columns:minmax(0,1fr);gap:0}.arr{height:34px}.arr svg{transform:rotate(90deg)}
  .jump{grid-template-columns:repeat(3,1fr)}
  .step{padding:0 0 46px 0}.step::before{display:none}
  .step-n{position:static;margin-bottom:12px}
  .screen{padding:20px 14px}
  .mk-plaza{grid-template-columns:minmax(0,1fr)}.mk-plaza>.mk-panel>:nth-child(n+5){display:none}.mk-models{padding-right:0}
  .mk-tr{grid-template-columns:1.6fr .9fr .9fr}.mk-tr span:nth-child(1),.mk-tr span:nth-child(3),.mk-tr span:nth-child(6){display:none}
  .hs.r{right:-10px;top:-12px;margin-top:0}.hs.l{left:-10px;top:-12px;margin-top:0}.hs.r.mb{top:auto;bottom:-12px}
  .pager{grid-template-columns:minmax(0,1fr)}
  .url{max-width:none}.bar-pad{display:none}
  .foot-in{padding:22px 16px}
}
@media (max-width:480px){.code-dots{display:none}.code-bar{padding-left:8px}.code pre{padding:14px;font-size:12.5px}.mk-models{padding-right:0}.mk-price{grid-template-columns:1fr 1fr}.mk-stat{grid-column:1/-1;justify-content:flex-start}.jump{grid-template-columns:repeat(2,1fr)}.mk-set-row{grid-template-columns:1fr;gap:4px}.brand .tag{display:none}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}html{scroll-behavior:auto}}
@media print{.topbar,.side,.toc,.foot,.copy,.pager,.cta{display:none}.shell{display:block}.hs::after{display:none}}