/* AI 工具场景导航 — hand-written, no frameworks. Palette: teal + amber. */
*,*::before,*::after{box-sizing:border-box}
:root{
 --bg:#f6f8f8;--surface:#fff;--surface-2:#f0f5f4;--fg:#0f1a1c;--mut:#5b6b70;--line:#e2e9e8;--line-2:#d3dedd;
 --brand:#0f766e;--brand-2:#0e7490;--brand-ink:#0b5e58;--brand-soft:#e6f4f2;--accent:#f59e0b;--accent-ink:#1c1300;
 --hero-1:#0d9488;--hero-2:#0e7490;--hero-3:#155e75;
 --new:#e11d48;--free:#047857;--free-bg:#d1fae5;--fm:#1d4ed8;--fm-bg:#dbeafe;--paid:#9a3412;--paid-bg:#ffedd5;
 --shadow:0 1px 2px rgba(15,26,28,.05),0 1px 3px rgba(15,26,28,.06);--shadow-lg:0 10px 30px -12px rgba(15,60,60,.25);
 --r:14px;--r-sm:10px;
 --font:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Noto Sans CJK SC","Source Han Sans SC","Microsoft YaHei",Roboto,"Helvetica Neue",Arial,sans-serif;
}
:root[data-theme=dark]{--bg:#0b1214;--surface:#121c1f;--surface-2:#162427;--fg:#e7efee;--mut:#9fb1b3;--line:#21302f;--line-2:#2c3e3d;
 --brand:#2dd4bf;--brand-2:#22d3ee;--brand-ink:#5eead4;--brand-soft:#133230;--hero-1:#0f5f58;--hero-2:#0c4a5c;--hero-3:#0b3a48;
 --free:#6ee7b7;--free-bg:#063d2c;--fm:#93c5fd;--fm-bg:#162a4d;--paid:#fdba74;--paid-bg:#45210c;--shadow:0 1px 2px rgba(0,0,0,.4);--shadow-lg:0 10px 30px -12px rgba(0,0,0,.6)}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#0b1214;--surface:#121c1f;--surface-2:#162427;--fg:#e7efee;--mut:#9fb1b3;--line:#21302f;--line-2:#2c3e3d;
 --brand:#2dd4bf;--brand-2:#22d3ee;--brand-ink:#5eead4;--brand-soft:#133230;--hero-1:#0f5f58;--hero-2:#0c4a5c;--hero-3:#0b3a48;
 --free:#6ee7b7;--free-bg:#063d2c;--fm:#93c5fd;--fm-bg:#162a4d;--paid:#fdba74;--paid-bg:#45210c;--shadow:0 1px 2px rgba(0,0,0,.4);--shadow-lg:0 10px 30px -12px rgba(0,0,0,.6)}}
:root[data-theme=dark]{--surface-2:#162427}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font:16px/1.7 var(--font);background:var(--bg);color:var(--fg);-webkit-font-smoothing:antialiased}
a{color:var(--brand-ink);text-decoration:none}a:hover{text-decoration:underline}
img{max-width:100%}
h1,h2,h3{line-height:1.3;letter-spacing:-.01em}
.wrap{max-width:1200px;margin:0 auto;padding:0 20px}
.narrow{max-width:820px}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;z-index:99;background:var(--surface);padding:8px 12px;border-radius:8px}
.muted{color:var(--mut);font-size:.85rem}
.center{text-align:center}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:6px}

/* header */
.top{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--surface) 88%,transparent);backdrop-filter:saturate(1.6) blur(12px);-webkit-backdrop-filter:saturate(1.6) blur(12px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--fg);font-size:1.05rem;white-space:nowrap}.brand:hover{text-decoration:none}
.links{display:flex;gap:4px;margin-left:12px;flex:1;overflow:auto;scrollbar-width:none}
.links a{color:var(--fg);padding:8px 12px;border-radius:999px;font-size:.93rem;font-weight:500;white-space:nowrap}
.links a:hover{background:var(--surface-2);text-decoration:none}
.actions{display:flex;align-items:center;gap:8px}
.lang{font-size:.88rem;font-weight:600;padding:7px 14px;border:1px solid var(--line-2);border-radius:999px;color:var(--fg);white-space:nowrap}.lang:hover{text-decoration:none;border-color:var(--brand)}
.icon-btn{display:grid;place-items:center;width:36px;height:36px;border-radius:999px;border:1px solid var(--line-2);background:transparent;color:var(--fg);cursor:pointer}
.icon-btn:hover{border-color:var(--brand)}
.subnav{display:flex;gap:6px;overflow-x:auto;padding-bottom:10px;scrollbar-width:none}
.subnav::-webkit-scrollbar,.links::-webkit-scrollbar{display:none}
.subnav a{font-size:.85rem;color:var(--mut);padding:4px 12px;border-radius:999px;background:var(--surface-2);white-space:nowrap}
.subnav a:hover{color:var(--brand-ink);text-decoration:none}
.has-hero .subnav{display:none}

/* hero (Futurepedia-style: full-width colored band with big rounded bottom) */
.hero{background:radial-gradient(1200px 400px at 85% -10%,rgba(255,255,255,.18),transparent 60%),linear-gradient(135deg,var(--hero-1),var(--hero-2) 55%,var(--hero-3));color:#fff;border-radius:0 0 48px 48px;padding:64px 0 56px;margin-bottom:40px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;inset:auto -10% -60% auto;width:520px;height:520px;border-radius:50%;background:rgba(245,158,11,.14);pointer-events:none}
.hero-in{text-align:center;position:relative;z-index:1}
.kicker{display:inline-block;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);padding:5px 14px;border-radius:999px;font-size:.85rem;font-weight:600}
.hero h1{font-size:clamp(2rem,5.4vw,3.6rem);font-weight:800;margin:18px auto 12px;max-width:860px;letter-spacing:-.02em}
.hero h1 em{font-style:normal;color:#fde68a}
.hero-sub{max-width:680px;margin:0 auto 28px;color:#d7f3ef;font-size:1.05rem}
.search{display:flex;align-items:center;max-width:680px;margin:0 auto;background:var(--surface);border-radius:999px;padding:6px 6px 6px 18px;box-shadow:0 12px 40px -10px rgba(0,0,0,.35)}
.search .s-ic{color:var(--mut);display:flex}
.search input{flex:1;min-width:0;border:0;background:transparent;font:inherit;font-size:1.02rem;padding:12px 12px;color:var(--fg);outline:none}
.search button{border:0;background:var(--accent);color:var(--accent-ink);font:inherit;font-weight:700;padding:11px 24px;border-radius:999px;cursor:pointer}
.search button:hover{filter:brightness(1.05)}
.search.sm{margin:18px 0 0;max-width:560px;box-shadow:var(--shadow);border:1px solid var(--line)}
.chips{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:22px}
.chips.left{justify-content:flex-start;margin-top:14px}
.chip{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:999px;font:inherit;font-size:.88rem;font-weight:500;cursor:pointer;
 background:var(--surface);color:var(--fg);border:1px solid var(--line-2);white-space:nowrap}
.chip:hover{border-color:var(--brand);text-decoration:none;color:var(--brand-ink)}
.chip[aria-pressed=true]{background:var(--brand);border-color:var(--brand);color:#fff}
.chip.sm{padding:4px 11px;font-size:.82rem}
.hero .chip{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.3)}
.hero .chip:hover{background:rgba(255,255,255,.22);color:#fff}

/* home split: sidebar + rows */
.main-split{display:grid;grid-template-columns:250px 1fr;gap:32px;align-items:start}
.side{position:sticky;top:84px}
.side h2{font-size:1.05rem;margin:6px 0 12px}
.side-list{display:flex;flex-direction:column;gap:2px}
.side-item{display:flex;align-items:center;gap:10px;width:100%;padding:9px 12px;border:0;background:transparent;border-radius:10px;font:inherit;font-size:.93rem;color:var(--fg);cursor:pointer;text-align:left}
.side-item em{margin-left:auto;font-style:normal;font-size:.78rem;color:var(--mut);background:var(--surface-2);padding:1px 8px;border-radius:999px}
.side-item:hover{background:var(--surface)}
.side-item[aria-pressed=true]{background:var(--brand-soft);color:var(--brand-ink);font-weight:600}
.side-ic{width:28px;height:28px;display:grid;place-items:center;border-radius:8px;background:var(--surface);border:1px solid var(--line);font-size:.95rem}
.tabs{display:flex;gap:6px;justify-content:center;border-bottom:1px solid var(--line);margin-bottom:18px}
.tabs button{border:0;background:transparent;font:inherit;font-size:.95rem;font-weight:600;color:var(--mut);padding:10px 16px;cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px}
.tabs button[aria-selected=true]{color:var(--brand-ink);border-bottom-color:var(--brand)}
.rows,.cards{list-style:none;margin:0;padding:0}
.rows{display:flex;flex-direction:column;gap:12px}
.row{position:relative;display:flex;gap:16px;align-items:flex-start;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px;box-shadow:var(--shadow);transition:box-shadow .15s,transform .15s,border-color .15s}
.row:hover,.card:hover{box-shadow:var(--shadow-lg);border-color:var(--line-2);transform:translateY(-1px)}
.row-main{flex:1;min-width:0}
.row h3,.card h3{margin:0;font-size:1.06rem;display:flex;align-items:center;flex-wrap:wrap;gap:6px}
.row h3 a,.card h3 a{color:var(--fg)}
.row p{margin:2px 0 6px;color:var(--mut);font-size:.93rem}
.row-side{display:flex;flex-direction:column;align-items:flex-end;gap:10px;position:relative;z-index:2}
.stretch::after{content:"";position:absolute;inset:0;z-index:1;border-radius:var(--r)}
.stretch:hover{text-decoration:none}
.ext{position:relative;z-index:2;display:grid;place-items:center;width:34px;height:34px;border-radius:10px;border:1px solid var(--line-2);color:var(--mut);background:var(--surface)}
.ext:hover{color:var(--brand-ink);border-color:var(--brand)}
.hashes{display:flex;flex-wrap:wrap;gap:4px 10px}
.hash{font-size:.8rem;color:var(--brand-ink);opacity:.85}
.none{text-align:center;color:var(--mut);padding:30px 0}
[hidden]{display:none!important}

/* logos */
.logo-img{flex:none;border-radius:12px;background:#fff;border:1px solid var(--line);object-fit:contain;padding:4px}
.logo-img.sm{width:32px;height:32px;border-radius:8px;padding:2px}
.logo-img.md{width:48px;height:48px}
.logo-img.lg{width:88px;height:88px;border-radius:20px;padding:8px;box-shadow:var(--shadow)}
.logo-img.letter{display:grid;place-items:center;font-weight:800;color:#fff;background:linear-gradient(135deg,var(--hero-1),var(--hero-2));border:0}
.logo-img.lg.letter{font-size:2rem}

/* badges */
.badge{display:inline-flex;align-items:center;font-size:.72rem;font-weight:700;padding:2px 8px;border-radius:999px;line-height:1.5;letter-spacing:.02em;white-space:nowrap}
.b-new{background:var(--new);color:#fff}
.b-ft{background:var(--accent);color:var(--accent-ink)}
.b-sp{background:var(--surface-2);color:var(--mut);border:1px solid var(--line-2)}
.pm-free{background:var(--free-bg);color:var(--free)}
.pm-freemium{background:var(--fm-bg);color:var(--fm)}
.pm-paid{background:var(--paid-bg);color:var(--paid)}
.fs-free,.fs-free_use,.fs-free_plan{background:var(--free-bg);color:var(--free)}
.fs-trial{background:var(--fm-bg);color:var(--fm)}
.fs-none{background:var(--paid-bg);color:var(--paid)}
.fs-unknown{background:var(--surface-2);color:var(--mut);border:1px solid var(--line-2)}

/* section heads + tiles */
.band{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:48px 0;margin:48px 0}
.sec-h{font-size:clamp(1.4rem,3vw,1.9rem);text-align:center;margin:0 0 28px}
.sec-h.sm{font-size:1.15rem;text-align:left;margin:40px 0 0}
.tiles{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.tile{display:flex;gap:14px;align-items:flex-start;padding:18px;border:1px solid var(--line);border-radius:var(--r);background:var(--bg);color:var(--fg);transition:border-color .15s,box-shadow .15s}
.tile:hover{text-decoration:none;border-color:var(--brand);box-shadow:var(--shadow-lg)}
.tile-ic{flex:none;width:44px;height:44px;display:grid;place-items:center;font-size:1.35rem;border-radius:12px;background:var(--brand-soft)}
.tile h3{margin:0 0 4px;font-size:1rem}
.tile p{margin:0 0 8px;font-size:.85rem;color:var(--mut);line-height:1.55}
.tile small{color:var(--brand-ink);font-weight:600}

/* how + faq */
.how{display:grid;grid-template-columns:1fr 1.3fr;gap:32px;align-items:start;margin-bottom:56px}
.how-card{background:linear-gradient(160deg,var(--brand-soft),var(--surface));border:1px solid var(--line);border-radius:var(--r);padding:26px}
.how-card h2{margin-top:0;font-size:1.3rem}
.ticks{list-style:none;padding:0;margin:0 0 8px}
.ticks li{display:flex;gap:10px;align-items:flex-start;margin:8px 0}
.tick{flex:none;color:var(--brand);margin-top:3px;display:flex}
.faq h2{margin-top:0;font-size:1.3rem}
.qa{border:1px solid var(--line);background:var(--surface);border-radius:var(--r-sm);margin-bottom:10px;box-shadow:var(--shadow)}
.qa summary{cursor:pointer;list-style:none;padding:14px 44px 14px 18px;position:relative}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);font-size:1.3rem;color:var(--brand);font-weight:400}
.qa[open] summary::after{content:"–"}
.qa summary h3{margin:0;font-size:1rem;font-weight:600}
.ans{padding:0 18px 14px;color:var(--mut)}.ans p{margin:0}

/* page heads */
.pagehead{background:linear-gradient(180deg,var(--brand-soft),transparent);padding:22px 0 26px;margin-bottom:24px}
.crumb{font-size:.85rem;color:var(--mut);margin-bottom:14px;display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.crumb a{color:var(--mut)}.crumb a:hover{color:var(--brand-ink)}
.crumb .sep{opacity:.5}
.pagehead h1{margin:0 0 8px;font-size:clamp(1.6rem,4vw,2.4rem);display:flex;align-items:center;flex-wrap:wrap;gap:10px}
.count{font-size:.9rem;font-weight:700;background:var(--brand);color:#fff;border-radius:999px;padding:2px 12px}
.lead{color:var(--mut);font-size:1.03rem;margin:0;max-width:820px}
.ph-title{display:flex;gap:18px;align-items:flex-start}
.ph-ic{flex:none;width:64px;height:64px;border-radius:18px;background:var(--surface);border:1px solid var(--line);display:grid;place-items:center;font-size:1.9rem;box-shadow:var(--shadow)}
.summary{margin-top:20px;background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--brand);border-radius:var(--r-sm);padding:14px 18px;box-shadow:var(--shadow)}
.summary b{font-size:.82rem;text-transform:uppercase;letter-spacing:.06em;color:var(--brand-ink)}
.summary p{margin:4px 0 0}

/* cards grid */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{position:relative;display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px;box-shadow:var(--shadow);transition:box-shadow .15s,transform .15s,border-color .15s}
.card-head{display:flex;gap:12px;align-items:center;margin-bottom:10px}
.card-badges{display:flex;gap:6px;margin-top:4px;flex-wrap:wrap}
.card>p{margin:0 0 10px;color:var(--mut);font-size:.92rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.card-foot{display:flex;justify-content:space-between;align-items:center;margin-top:14px;padding-top:12px;border-top:1px solid var(--line)}
.more-link{font-size:.85rem;font-weight:600;color:var(--brand-ink)}

/* compare table */
.compare{margin-top:44px}
.compare h2{font-size:1.3rem}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:var(--surface);box-shadow:var(--shadow)}
table{border-collapse:collapse;width:100%;min-width:760px;font-size:.9rem}
th,td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
thead th{background:var(--surface-2);font-size:.8rem;text-transform:uppercase;letter-spacing:.04em;color:var(--mut)}
tbody tr:last-child>*{border-bottom:0}
.tcell{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--fg);white-space:nowrap}
.pnote{color:var(--mut);min-width:260px}
.narrow .faq,section.wrap.narrow{margin-top:44px}

/* tool page */
.tool-head{padding-bottom:30px}
.th{display:flex;gap:22px;align-items:center}
.th-main{flex:1;min-width:0}
.th-cta{display:flex;flex-direction:column;align-items:flex-end;gap:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;padding:11px 22px;border-radius:999px;border:1px solid transparent;font-size:.95rem;white-space:nowrap}
.btn:hover{text-decoration:none;filter:brightness(1.05)}
.btn.primary{background:var(--accent);color:var(--accent-ink);box-shadow:0 6px 18px -8px rgba(245,158,11,.8)}
.btn.ghost{border-color:var(--line-2);color:var(--fg);background:var(--surface)}
.btn.ghost:hover{border-color:var(--brand);color:var(--brand-ink)}
.btn.block{display:flex;width:100%;margin-top:16px}
.tool-grid{display:grid;grid-template-columns:1fr 320px;gap:32px;align-items:start}
.tool-main section{margin-top:34px}
.tool-main h2{font-size:1.3rem;margin:0 0 12px}
.tool-main>.summary{margin-top:0}
.price-box{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);padding:16px 18px}
.price-box p{margin:6px 0 0}
.tool-side{position:sticky;top:84px}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px;box-shadow:var(--shadow)}
.side-card h2{font-size:1rem;margin:0 0 12px}
.facts{display:grid;grid-template-columns:auto 1fr;gap:10px 14px;margin:0;font-size:.9rem}
.facts dt{color:var(--mut)}.facts dd{margin:0;font-weight:500;word-break:break-word}
.src{padding-left:18px;font-size:.88rem;word-break:break-all}
.meta{color:var(--mut);font-size:.85rem}
.note{font-size:.85rem;color:var(--mut);margin-top:10px}
.prose{padding-bottom:40px}.prose h2{font-size:1.25rem;margin-top:30px}
.ad{border:1px dashed var(--line-2);border-radius:var(--r);padding:24px;text-align:center;color:var(--mut);margin:24px auto;max-width:1160px}

/* footer */
.foot{background:var(--surface);border-top:1px solid var(--line);margin-top:56px;padding:44px 0 24px;font-size:.9rem}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px}
.foot-grid p{color:var(--mut);max-width:360px}
.foot h4{margin:4px 0 12px;font-size:.92rem}
.foot ul{list-style:none;padding:0;margin:0;columns:2;column-gap:16px}
.foot li{margin:0 0 6px}.foot li a{color:var(--mut)}.foot li a:hover{color:var(--brand-ink)}
.foot-note{border-top:1px solid var(--line);margin-top:28px;padding-top:16px;color:var(--mut);font-size:.82rem}
.foot-note p{margin:4px 0}
.band+.foot,.band:last-child{margin-bottom:0}

/* responsive (mobile-first overrides) */
@media (max-width:1024px){.tiles{grid-template-columns:repeat(2,1fr)}.cards{grid-template-columns:repeat(2,1fr)}.main-split{grid-template-columns:210px 1fr;gap:22px}}
@media (max-width:860px){
 .main-split{grid-template-columns:1fr}.side{position:static}.side h2{display:none}
 .side-list{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:4px;scrollbar-width:none}
 .side-item{width:auto;flex:none;border:1px solid var(--line-2);border-radius:999px;padding:6px 12px;background:var(--surface)}
 .side-item .side-ic{display:none}.side-item em{margin-left:4px}
 .tool-grid{grid-template-columns:1fr}.tool-side{position:static}
 .how{grid-template-columns:1fr}.foot-grid{grid-template-columns:1fr 1fr}.foot-grid>div:first-child{grid-column:1/-1}
 .hide-sm{display:none}
}
@media (max-width:640px){
 .wrap{padding:0 16px}.bar{gap:10px;height:58px}.links{margin-left:0}.links a{padding:6px 8px;font-size:.88rem}
 .brand span{display:none}
 .hero{padding:40px 0 36px;border-radius:0 0 28px 28px;margin-bottom:28px}
 .hero .chips{flex-wrap:nowrap;overflow-x:auto;justify-content:flex-start;padding-bottom:4px;margin-left:-16px;margin-right:-16px;padding-left:16px;scrollbar-width:none}
 .search{padding-left:14px}.search button{padding:10px 16px}.search input{padding:10px 8px;font-size:.95rem}
 .tiles,.cards{grid-template-columns:1fr}
 .row{padding:14px;gap:12px}.logo-img.md{width:42px;height:42px}
 .row-side .ext{display:none}
 .th{flex-wrap:wrap;gap:16px}.th-cta{width:100%;flex-direction:row;align-items:center;justify-content:space-between}
 .logo-img.lg{width:68px;height:68px}
 .ph-ic{width:48px;height:48px;font-size:1.4rem}
 .band{padding:36px 0;margin:36px 0}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
.main-split>*,.tool-grid>*,.th-main,.list-area{min-width:0}
body{overflow-x:hidden}
@media (max-width:640px){.links a[href$="/about/"]{display:none}.hero h1{font-size:1.9rem}.tabs{justify-content:flex-start}}
.catalog{display:inline-flex;border:1px solid var(--line-2);border-radius:999px;padding:3px;background:var(--surface)}
.seg{font-size:.84rem;font-weight:600;padding:5px 12px;border-radius:999px;color:var(--mut);white-space:nowrap}
.seg:hover{text-decoration:none;color:var(--brand-ink)}
.seg.on{background:var(--brand);color:#fff}
@media (max-width:640px){.seg{padding:4px 9px;font-size:.78rem}.links a[href$="/#scenarios"]{display:none}}

/* niche guides + pricing table (2026-10-21) */
.summary.answer{border-left:4px solid #0f766e}
ol.steps{padding-left:1.4em}ol.steps li{margin:.35em 0}
pre.prompt{white-space:pre-wrap;word-break:break-word;background:rgba(127,127,127,.1);border:1px solid rgba(127,127,127,.25);border-radius:10px;padding:14px;font-size:.92em;line-height:1.6}
ul.handson,ul.changelog,ul.guide-list{list-style:none;padding:0}
ul.handson li,ul.guide-list li{border:1px solid rgba(127,127,127,.25);border-radius:10px;padding:12px 14px;margin:10px 0}
ul.changelog li{padding:8px 0;border-bottom:1px solid rgba(127,127,127,.2)}
ul.guide-list h3{margin:0 0 6px}
.guide-links ul{padding-left:1.2em}.guide-links li{margin:.3em 0}
.guide .compare{margin:24px 0}
/* language dropdown (JS-free <details>) */
.langsel{position:relative}
.langsel>summary{list-style:none;display:flex;align-items:center;gap:4px;height:36px;padding:0 10px;border:1px solid var(--line-2);border-radius:999px;cursor:pointer;font-size:.85rem;color:var(--fg);white-space:nowrap}
.langsel>summary::-webkit-details-marker{display:none}
.langsel>summary:hover{border-color:var(--brand)}
.langsel ul{position:absolute;right:0;top:42px;z-index:50;min-width:170px;margin:0;padding:6px;list-style:none;background:var(--surface);border:1px solid var(--line-2);border-radius:12px;box-shadow:0 10px 30px rgba(0,0,0,.12);max-height:70vh;overflow:auto}
.langsel li a{display:block;padding:6px 10px;border-radius:8px;color:var(--fg);text-decoration:none;font-size:.9rem}
.langsel li a:hover,.langsel li a[aria-current]{background:var(--surface-2)}
@media (max-width:640px){.langsel>summary span{display:none}}

/* 2026-11-11 "Listed on" badges */
pre.code{background:var(--surface-2);border:1px solid var(--line);border-radius:10px;padding:.75rem 1rem;overflow:auto;white-space:pre-wrap;word-break:break-all;font-size:.82rem;line-height:1.45}
.badge-prev{margin:1rem 0 .4rem;padding:1rem;border-radius:12px;border:1px solid var(--line);background:#fff;display:inline-block}
.badge-prev.dark{background:#020617}
.badge-prev figcaption{font-size:.8rem;margin-top:.4rem;color:#64748b}
.badge-embed{margin:1.5rem 0;padding:.8rem 1rem;border:1px dashed var(--line-2);border-radius:12px}
.badge-embed summary{cursor:pointer;font-weight:600}
ul.cols{columns:3 12rem;padding-left:1.1rem}