:root{--ink:#17343d;--muted:#587078;--teal:#17616b;--gold:#a98543;--paper:#f4f8f7;--line:#dce6e3;--shadow:0 16px 48px rgba(23,52,61,.08)}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.8 "Noto Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif}a{color:var(--teal);text-decoration:none}a:hover{color:#0e4750;text-decoration:underline}.site-header{min-height:78px;display:flex;align-items:center;gap:26px;padding:0 max(28px,calc((100vw - 1240px)/2));background:rgba(255,255,255,.95);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10;backdrop-filter:blur(14px)}.brand{display:block;width:min(290px,28vw);min-width:155px}.brand img{display:block;width:100%;height:auto;max-height:48px;object-fit:contain;object-position:left center}.site-header nav{display:flex;gap:20px;align-items:center;margin-left:auto}.site-header nav a{font-size:13px;color:#36535a;white-space:nowrap}.site-header nav a[aria-current=page]{color:var(--teal);font-weight:700}.header-cta,.button{display:inline-flex;align-items:center;gap:12px;background:var(--teal);color:white!important;border-radius:999px;padding:9px 18px;font-size:13px;font-weight:650;white-space:nowrap}.header-cta:hover,.button:hover{background:#247681;text-decoration:none}.layout{max-width:1240px;margin:38px auto 90px;padding:0 28px;display:grid;grid-template-columns:230px minmax(0,1fr);gap:50px}.sidebar{align-self:start;position:static;background:rgba(255,255,255,.7);border:1px solid var(--line);border-radius:18px;padding:18px 14px;display:flex;flex-direction:column;gap:3px;max-height:none;overflow:visible}.side-kicker{font-size:10px;letter-spacing:.15em;color:var(--gold);padding:0 10px;margin:0 0 8px}.sidebar a{border-radius:9px;padding:7px 10px;font-size:13px;color:#49636a}.sidebar a[aria-current=page]{background:#e7f0ee;color:var(--teal);font-weight:700}.article{min-width:0;max-width:850px}.eyebrow{color:var(--gold);font-size:11px;letter-spacing:.11em;font-weight:700}.article h1{font-size:clamp(32px,4vw,44px);letter-spacing:-.035em;line-height:1.25;margin:12px 0}.lead{font-size:17px;color:var(--muted);margin:0 0 32px}.article h2{font-size:22px;line-height:1.4;margin:38px 0 14px;letter-spacing:-.02em}.article h3{font-size:17px;margin:0 0 5px}.article p{margin:10px 0 18px}.article ul,.article ol{padding-left:22px}.article li{padding:3px 0}.hero-card{background:linear-gradient(135deg,#e8f1ef,#f5f2ea);border:1px solid var(--line);border-radius:20px;padding:30px 34px;margin:25px 0 36px;box-shadow:var(--shadow)}.hero-card h2{font-size:27px;margin:12px 0}.hero-card p{max-width:650px;color:#526b70}.pill{display:inline-block;padding:4px 11px;border-radius:999px;background:#fff;color:var(--teal);font-size:11px;font-weight:700}.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:18px 0 30px}.card{position:relative;display:block;padding:21px 23px;border:1px solid var(--line);border-radius:16px;background:#fff;color:var(--ink);box-shadow:0 8px 24px rgba(23,52,61,.035);transition:transform .18s,box-shadow .18s}.card:hover{transform:translateY(-2px);box-shadow:var(--shadow);text-decoration:none}.card p{color:var(--muted);font-size:13px;margin:6px 28px 0 0}.card-mark{position:absolute;right:20px;top:16px;color:var(--gold)}.info-row{display:flex;gap:20px;align-items:center;justify-content:space-between;background:#fff;border:1px solid var(--line);padding:12px 16px;border-radius:12px;margin:10px 0}.info-row span{font-size:13px;color:var(--muted)}code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.93em;color:#125760;background:#edf4f3;padding:.12em .38em;border-radius:5px;overflow-wrap:anywhere}pre{background:#17343d;color:#ecf4f2;padding:20px 22px;border-radius:14px;overflow:auto;line-height:1.65;border:1px solid #244c54;box-shadow:0 12px 32px rgba(23,52,61,.12)}pre code{background:transparent;color:inherit;padding:0;font-size:13px}.callout,.note{background:#fff;border-left:3px solid var(--gold);border-radius:0 12px 12px 0;padding:15px 18px;margin:20px 0;color:#4d666c}.callout p{margin:3px 0 0}.note{font-size:13px;background:#f5f2ea;border-color:#bd9552}.model-group{border-top:1px solid var(--line);padding-top:8px;margin-top:27px}.model-group h2{font-size:19px;margin:14px 0}.model-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.model{background:#fff;border:1px solid var(--line);padding:12px 14px;border-radius:12px;min-width:0}.model code{display:block;width:fit-content;max-width:100%;font-size:13px;font-weight:700}.model span{display:block;color:var(--muted);font-size:11px;margin-top:5px}details{background:#fff;border:1px solid var(--line);padding:15px 18px;border-radius:12px;margin:11px 0}summary{font-weight:700;cursor:pointer}details p{color:var(--muted);margin-bottom:0!important}.article-footer{display:flex;gap:10px;align-items:center;border-top:1px solid var(--line);margin-top:52px;padding-top:20px;color:#799096;font-size:12px}.article-footer a{color:#587078}@media(max-width:860px){.site-header{min-height:68px;flex-wrap:wrap;gap:10px 16px;padding:12px 20px}.brand{width:210px}.site-header nav{order:3;width:100%;justify-content:flex-start;gap:18px;overflow:auto;padding:4px 0}.header-cta{margin-left:auto}.layout{display:block;margin:24px auto 60px;padding:0 20px}.sidebar{position:static;max-height:none;flex-direction:row;gap:6px;overflow:auto;white-space:nowrap;padding:9px;margin-bottom:27px;border-radius:12px}.side-kicker{display:none}.sidebar a{font-size:12px}.article{max-width:none}.lead{font-size:16px}}@media(max-width:560px){.site-header{padding:11px 15px}.brand{width:175px;min-width:130px}.brand img{max-height:35px}.site-header nav{gap:16px}.site-header nav a{font-size:12px}.header-cta{font-size:11px;padding:7px 12px}.layout{padding:0 15px;margin-top:18px}.article h1{font-size:31px}.article h2{font-size:20px}.card-grid,.model-grid{grid-template-columns:1fr}.hero-card{padding:22px 20px}.hero-card h2{font-size:23px}.info-row{align-items:flex-start;flex-direction:column;gap:4px}.article-footer{flex-wrap:wrap}}


:root{--surface:#fff;--surface-soft:#f4f8f7;--card:#fff;--muted:#536a70;--ink:#17343d;--accent:#17616b;--on-accent:#fff;--capsule-bg:rgba(255,255,255,.97);--control-hover:#edf4f2;--header-shadow:rgba(20,47,51,.10);color-scheme:light}
html[data-theme="dark"]{color-scheme:dark;--ink:#e5efeb;--muted:#bfd0cd;--teal:#75d3d6;--gold:#e1bf7b;--paper:#12282e;--surface:#0d1c21;--surface-soft:#12282e;--card:#19353c;--line:#3b575b;--accent:#75d3d6;--on-accent:#0a2d33;--capsule-bg:rgba(15,34,40,.97);--control-hover:#24464e;--header-shadow:rgba(0,0,0,.30);--shadow:0 16px 48px rgba(0,0,0,.24)}
html[data-theme="dark"] .sidebar,html[data-theme="dark"] .card,html[data-theme="dark"] .model,html[data-theme="dark"] .info-row,html[data-theme="dark"] details,html[data-theme="dark"] .callout{background:var(--card);border-color:var(--line);color:var(--ink)}
html[data-theme="dark"] .sidebar a,html[data-theme="dark"] .article-footer a{color:var(--muted)}html[data-theme="dark"] .sidebar a[aria-current="page"]{background:#244c51;color:#a8e0d8}
html[data-theme="dark"] .hero-card{background:linear-gradient(135deg,#1d4144,#3b382c);border-color:#45605c}html[data-theme="dark"] .hero-card p,html[data-theme="dark"] .callout{color:var(--muted)}html[data-theme="dark"] .pill{background:#244b4e;color:#a8e0d8}html[data-theme="dark"] code{background:#24464b;color:#b3e2dc}html[data-theme="dark"] pre{background:#091a1e;border-color:#36575b}html[data-theme="dark"] .note{background:#353328;border-color:#a98543;color:#dfd5bd}html[data-theme="dark"] .button{background:var(--accent);color:var(--on-accent)!important}
.nav-group{display:flex;flex-direction:column;gap:2px;margin:3px 0 15px}.nav-heading{font-size:11px;letter-spacing:.04em;color:var(--gold);padding:5px 10px;margin:0;font-weight:700}.sidebar a:hover{text-decoration:none;background:var(--control-hover)}
.article-footer{flex-wrap:wrap}.capsule-shell .capsule-logo{max-height:none}
@media(max-width:860px){.sidebar{display:block;white-space:normal;overflow:visible}.nav-group{margin:0 0 8px}.nav-heading{cursor:pointer}.sidebar .nav-heading{font-size:12px}.sidebar .nav-group a{padding-left:22px}.layout{margin-top:24px}}

.sidebar details.nav-group{display:block;border:0;background:transparent!important;box-shadow:none;border-radius:0;padding:0;margin:3px 0 15px;color:var(--ink)}.sidebar .nav-heading{display:list-item;list-style-position:inside;cursor:pointer}.sidebar .nav-group a{display:block;margin:2px 0}.sidebar .nav-group:not([open])>a{display:none}@media(max-width:860px){.sidebar{max-height:none}.sidebar details.nav-group{margin:0 0 8px}}

html[data-theme="dark"] pre code{background:transparent;color:inherit}

/* The document is the only vertical scroll container. */
.layout>.docs-directory{align-self:start;min-width:0;margin:0;padding:0;border:0;border-radius:0;background:transparent;box-shadow:none;color:var(--ink)}
.directory-toggle{display:none}
.sidebar{overflow:visible;max-height:none}
@media(max-width:860px){
  .layout>.docs-directory{margin:0 0 24px;border:1px solid var(--line);border-radius:14px;background:var(--surface)}
  .directory-toggle{display:flex;align-items:center;gap:12px;list-style:none;padding:13px 16px;color:var(--ink);font-size:13px;font-weight:600;cursor:pointer}
  .directory-toggle::-webkit-details-marker{display:none}
  .directory-toggle::marker{content:""}
  .directory-current{margin-left:auto;max-width:55%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted);font-size:12px;font-weight:400}
  .directory-toggle svg{width:16px;height:16px;flex-shrink:0;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
  .docs-directory[open]>.directory-toggle{border-bottom:1px solid var(--line)}
  .docs-directory[open]>.directory-toggle svg{transform:rotate(180deg)}
  .docs-directory:not([open])>.sidebar{display:none}
  .docs-directory>.sidebar{margin:0;border:0;border-radius:0;background:transparent;padding:12px;overflow:visible;max-height:none}
}
.directory-toggle:focus-visible{outline:2px solid var(--gold);outline-offset:3px}