/* ---------- prose ---------- */
.prose{color:var(--fg1);font-size:15.5px}
.prose>*:first-child{margin-top:0}
.prose p{margin:.7em 0}
.prose h2{font-size:22px;margin:1.4em 0 .5em;color:#fff}
.prose h3{font-size:17.5px;margin:1.3em 0 .45em;color:#fff;line-height:1.45}
.prose h4{font-size:16px;margin:1.1em 0 .4em;color:#fff}
.prose strong{color:#fff;font-weight:650}
.prose ul,.prose ol{padding-left:1.4em;margin:.6em 0}
.prose li{margin:.35em 0}
.prose li::marker{color:var(--accent)}
.prose ol>li>strong:first-child,.prose ol>li>h3:first-child{display:block}
.prose code{font-family:var(--mono);font-size:.88em;padding:.12em .42em;border-radius:6px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);color:var(--fg);word-break:break-word}
.prose pre{position:relative;margin:1em 0;padding:18px 18px 16px;border-radius:14px;background:var(--bg1);border:1px solid var(--line2);overflow:auto;font-size:13.5px;line-height:1.65;box-shadow:0 0 0 1px rgba(0,0,0,.4) inset}
.prose pre code{background:none;border:0;padding:0;color:#e5e7eb;white-space:pre;word-break:normal}
.pre-wrap{position:relative}
.pre-wrap pre{padding-top:44px}
.pre-wrap .copy-btn{position:absolute;top:8px;right:8px;z-index:2}
.prose a{color:var(--fg);text-decoration:underline;text-decoration-color:rgba(255,255,255,.35);text-underline-offset:3px}
.prose a:hover{color:#fff;text-decoration-color:#fff}
.prose table{width:100%;border-collapse:collapse;margin:1em 0;font-size:14.5px;display:block;overflow-x:auto}
.prose th,.prose td{border:1px solid var(--line2);padding:10px 12px;text-align:left;vertical-align:top}
.prose thead th{background:rgba(255,255,255,.05);color:#fff}
.prose caption{caption-side:top;text-align:left;color:var(--fg3);font-size:13px;padding-bottom:6px}
.prose dl{display:grid;gap:10px;margin:1em 0}
.prose dl>div{padding:12px 14px;border-radius:12px;background:rgba(255,255,255,.03);border:1px solid var(--line)}
.prose dt{font-weight:650;color:#fff}
.prose dd{margin:4px 0 0;color:var(--fg2)}
.prose details{margin:1em 0;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.02);padding:0 16px}
.prose details>summary{cursor:pointer;padding:12px 0;font-weight:600;color:#fff;list-style:none}
.prose details>summary::-webkit-details-marker{display:none}
.prose details>summary::before{content:"▸";display:inline-block;margin-right:8px;color:var(--accent);transition:transform .2s}
.prose details[open]>summary::before{transform:rotate(90deg)}
.prose details[open]{padding-bottom:12px}
.prose hr{border:0;border-top:1px solid var(--line);margin:1.5em 0}
.prose aside,.prose .callout{display:block;margin:1em 0;padding:14px 16px;border-radius:14px;background:rgba(255,255,255,.025);border:1px solid rgba(255,255,255,.25)}
.prose .callout.warn{background:rgba(235,87,87,.05);border-color:rgba(244,63,94,.3)}
.prose aside>*:first-child,.prose .callout>*:first-child{margin-top:0}
.prose aside>*:last-child,.prose .callout>*:last-child{margin-bottom:0}
.prose .lead{font-size:16.5px;color:#e8e8f2;padding-left:14px;border-left:3px solid var(--accent)}
.prose .link-row,.prose [class$="-citations"],.prose [class$="-links"]{display:flex;flex-wrap:wrap;gap:8px;margin:1em 0}
.prose .chip-link,.prose .btn-link,.prose .link-row a,.prose [class$="-citations"] a{display:inline-flex;align-items:center;gap:6px;padding:7px 13px;border-radius:10px;font-size:14px;text-decoration:none;color:var(--fg);background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.28);transition:.2s}
.prose .chip-link:hover,.prose .btn-link:hover,.prose .link-row a:hover{background:rgba(255,255,255,.22);color:#fff}
.prose .btn-link.primary{background:#e5e5e6;color:#fff;border-color:transparent}
.prose figure{margin:1.2em 0}
.prose figure,.prose .shot{border-radius:16px;overflow:hidden;background:rgba(255,255,255,.02);border:1px solid var(--line)}
.prose figure img,.prose figure svg[class$="-screenshot"]{display:block;width:100%;height:auto;background:var(--bg1)}
.prose svg:not(.icon):not([class$="-screenshot"]){width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none}
.guard-schematic{padding:18px}
.guard-scheme-flow{display:flex;gap:14px;align-items:stretch}
.guard-scheme-stage{flex:1;padding:16px;border-radius:14px;border:1px solid var(--line2);background:rgba(255,255,255,.03);display:flex;flex-direction:column;gap:12px}
.guard-scheme-title{display:flex;gap:8px;align-items:center;color:var(--fg)}
.guard-scheme-title strong{color:#fff}
.guard-scheme-data{list-style:none;padding:0!important;margin:0!important;display:flex;flex-wrap:wrap;gap:6px}
.guard-scheme-data li{margin:0;padding:4px 10px;border-radius:99px;font-size:13px;background:rgba(255,255,255,.05);border:1px solid var(--line)}
.guard-scheme-action{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--fg2)}
.prose .guard-scheme-connector{width:28px;height:28px;align-self:center;color:var(--fg3)}
.guard-scheme-gateway{display:flex;flex-direction:column;padding:10px 12px;border-radius:12px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.3);font-size:13px}
.guard-scheme-gateway strong{font-size:15px}
.guard-scheme-gateway small{color:var(--fg3)}
.guard-scheme-branches{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.guard-scheme-result{display:flex;gap:8px;align-items:flex-start;padding:10px;border-radius:12px;font-size:13px}
.guard-scheme-result span{display:flex;flex-direction:column}
.guard-scheme-result small{color:var(--fg2)}
.guard-scheme-allow{background:rgba(52,211,153,.08);border:1px solid rgba(52,211,153,.3);color:#6ee7b7}
.guard-scheme-block{background:rgba(244,63,94,.08);border:1px solid rgba(244,63,94,.3);color:#fda4af}
.guard-schematic figcaption{border-top:0;padding:12px 0 0}
@media (max-width:640px){.guard-scheme-flow{flex-direction:column}.prose .guard-scheme-connector{transform:rotate(90deg)}}
.prose figcaption{padding:12px 16px 14px;font-size:14px;color:var(--fg2);border-top:1px solid var(--line)}
.prose figcaption strong{display:block;color:#fff;font-size:14.5px}
.prose figcaption p{margin:.3em 0}
.prose figcaption small{color:var(--fg3)}
.prose figcaption ol{margin:.5em 0 0}
.shot-tag{display:inline-block;margin:10px 0 0 12px;font-size:12px;padding:2px 10px;border-radius:99px;background:rgba(0,0,0,.4);border:1px solid var(--line2);color:var(--fg2)}
.zoomable{position:relative;cursor:zoom-in;display:block;outline:none}
.zoomable::after{content:"⤢ 放大";position:absolute;right:10px;top:10px;font-size:12px;padding:3px 9px;border-radius:8px;background:rgba(8,9,10,.8);color:#fff;border:1px solid var(--line2);opacity:0;transition:opacity .25s}
.zoomable:hover::after,.zoomable:focus-visible::after{opacity:1}
.zoomable:focus-visible{box-shadow:0 0 0 2px var(--accent)}
svg [class$="-marks"] rect{fill:none;stroke:#df263e;stroke-width:4}
svg.muse-screenshot [class$="-marks"] rect,svg.grokbot-screenshot [class$="-marks"] rect{stroke:#b62d20;stroke-width:3;vector-effect:non-scaling-stroke}
svg [class$="-marks"] circle{fill:#c82037;stroke:#fff;stroke-width:2}
svg [class$="-marks"] text{fill:#fff;font-size:25px;font-weight:700;text-anchor:middle;dominant-baseline:central;font-family:var(--font)}
svg [class$="-marks"] path,svg [class$="-marks"] line,svg [class$="-marks"] polyline{fill:none;stroke:#df263e;stroke-width:4}
.done-box{margin-top:1.4em;padding:14px 16px;border-radius:14px;background:rgba(76,183,130,.05);border:1px solid rgba(52,211,153,.28)}
.done-title{display:flex;align-items:center;gap:8px;font-weight:650;color:#6ee7b7;font-size:14px}
.done-box ul{margin:.4em 0 0;padding-left:1.3em}
.done-box li::marker{color:#34d399}
.copy-btn{display:inline-flex;align-items:center;gap:6px;cursor:pointer;font:inherit;font-size:13px;padding:7px 12px;border-radius:10px;color:#fff;background:rgba(255,255,255,.07);border:1px solid var(--line2);transition:.2s;margin:.3em 0}
.copy-btn::before{content:"";width:14px;height:14px;background:currentColor;-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='none' stroke='%23000' stroke-width='2' d='M8 8h12v12H8zM16 8V4H4v12h4'/%3E%3C/svg%3E") center/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='none' stroke='%23000' stroke-width='2' d='M8 8h12v12H8zM16 8V4H4v12h4'/%3E%3C/svg%3E") center/contain no-repeat}
.copy-btn:hover{background:rgba(255,255,255,.25);border-color:rgba(255,255,255,.5)}
.copy-btn.ok{background:rgba(52,211,153,.2);border-color:rgba(52,211,153,.5)}
.copy-btn:disabled{opacity:.45;cursor:not-allowed}

/* tabs & choices */
.choice-wrap{margin:1.2em 0 .6em}
.choice-legend{font-size:13px;color:var(--fg3);margin:0 0 8px!important;letter-spacing:.04em}
.choice-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px}
.choice{all:unset;box-sizing:border-box;cursor:pointer;display:flex;flex-direction:column;gap:4px;padding:14px 16px;border-radius:14px;border:1px solid var(--line2);background:rgba(255,255,255,.025);transition:.25s var(--ease)}
.choice strong{font-size:15px;color:#fff}
.choice span{font-size:13px;color:var(--fg2);line-height:1.55}
.choice:hover{border-color:rgba(255,255,255,.45)}
.choice.on{border-color:color-mix(in srgb,var(--accent) 70%,transparent);background:color-mix(in srgb,var(--accent) 12%,transparent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 18%,transparent)}
.choice:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.vtabs{margin:1em 0}
.vtabs-bar{display:flex;flex-wrap:wrap;gap:6px;padding:5px;border-radius:13px;background:rgba(255,255,255,.04);border:1px solid var(--line);margin-bottom:12px;width:fit-content;max-width:100%}
.vtab{all:unset;cursor:pointer;font-size:13.5px;padding:7px 13px;border-radius:9px;color:var(--fg2);transition:.2s}
.vtab:hover{color:#fff}
.vtab.on{background:rgba(255,255,255,.1);color:#fff;box-shadow:none}
.vtab:focus-visible{outline:2px solid var(--accent)}
.vtabs.linked>.vtabs-bar{display:none}
.vpanel{animation:fadein .35s var(--ease)}
@keyframes fadein{from{opacity:0;transform:translateY(6px)}}
.route-picker{padding:18px 20px;display:flex;flex-wrap:wrap;gap:18px 28px;align-items:flex-end}
.route-picker fieldset{border:0;margin:0;padding:0}
.route-picker legend{font-size:13px;color:var(--fg3);margin-bottom:8px}
.route-picker label{display:inline-flex;margin:0 6px 6px 0;cursor:pointer}
.route-picker input{position:absolute;opacity:0;pointer-events:none}
.route-picker label span{padding:8px 14px;border-radius:11px;border:1px solid var(--line2);font-size:14px;color:var(--fg2);transition:.2s}
.route-picker input:checked+span{color:#fff;border-color:color-mix(in srgb,var(--accent) 70%,transparent);background:color-mix(in srgb,var(--accent) 16%,transparent)}
.route-picker input:focus-visible+span{outline:2px solid var(--accent)}
.route-picker p{margin:0;width:100%;font-size:13px}
.migrate-guide .route-picker{position:sticky;top:72px;z-index:5;background:rgba(8,9,10,.9)}
[hidden]{display:none!important}

/* residential ops */
.ops{display:grid;gap:16px;margin-top:1em}
.op-card{padding:16px 18px;border-radius:16px;border:1px solid var(--line);background:rgba(255,255,255,.02)}
.op-head{display:flex;flex-direction:column;gap:2px;margin-bottom:6px}
.op-num{font-family:var(--mono);font-size:12px;color:var(--accent);letter-spacing:.08em}
.op-head h3{margin:0!important}
.ip-expected{padding:10px 12px;border-radius:10px;background:rgba(52,211,153,.07);border:1px solid rgba(52,211,153,.2)}
.ip-expected strong{display:block;color:#6ee7b7;font-size:13px}
.ip-converter,.guard-prompt,[class*="guard-"] textarea{}
.prose form{margin:1em 0}
.ip-converter{margin:1.2em 0;padding:18px;border-radius:16px;border:1px solid var(--line);background:rgba(255,255,255,.02)}
.ip-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.ip-field-wide{grid-column:1/-1}
.prose label{font-size:14px;color:var(--fg2)}
.ip-fields label{display:flex;flex-direction:column;gap:6px}
.prose input:not([type=radio]):not([type=checkbox]),.prose select,.prose textarea{font:inherit;font-size:14.5px;color:#fff;background:var(--bg1);border:1px solid var(--line2);border-radius:11px;padding:10px 12px;width:100%;outline:none;transition:border-color .2s,box-shadow .2s}
.prose textarea{font-family:var(--mono);font-size:13px;line-height:1.6;resize:vertical}
.prose input:focus,.prose select:focus,.prose textarea:focus{border-color:rgba(255,255,255,.7);box-shadow:0 0 0 3px rgba(255,255,255,.18)}
.ip-password-field{display:flex;gap:8px}
.prose button:not(.copy-btn):not(.choice):not(.vtab){font:inherit;font-size:13.5px;cursor:pointer;padding:9px 14px;border-radius:11px;color:#fff;background:rgba(255,255,255,.07);border:1px solid var(--line2);white-space:nowrap}
.prose button.primary,.prose .button.primary{background:#e5e5e6;border-color:transparent}
.prose button:disabled{opacity:.45;cursor:not-allowed}
.ip-node-output{display:flex;gap:8px;align-items:stretch;margin-top:6px}
#node-error{color:#fda4af;min-height:1em}
.guard-error{color:#fda4af!important}
.guard-guide .prose fieldset{border:1px solid var(--line);border-radius:14px;padding:12px 14px;margin:1em 0}
.guard-guide .prose fieldset label{display:flex;gap:10px;align-items:flex-start;padding:8px 0;cursor:pointer}
.guard-guide .prose input[type=radio],.guard-guide .prose input[type=checkbox]{accent-color:#e5e5e6;margin-top:6px}
.guard-status{position:fixed;left:-9999px}
.guide-outro{display:grid;gap:18px}
.guide-outro>section,.refs{padding:22px 24px}

/* virtual card */
.vc-head{font-size:19px!important;margin:0 0 .6em!important;background:linear-gradient(90deg,#fff,var(--fg));-webkit-background-clip:text;background-clip:text;color:transparent}
.vc-text{margin:.6em 0}
.vc-text p{margin:.35em 0}
.vc-strong{font-size:16.5px}
mark.hl-red{background:none;color:#fb7185;font-weight:700}
.vc-gallery{display:flex;flex-wrap:wrap;gap:12px;margin-top:1em}
.vc-gallery .vc-fig{margin:0;flex:var(--ar) 1 calc(var(--ar) * 180px);min-width:0;display:flex;flex-direction:column}
.vc-gallery .vc-fig img{aspect-ratio:var(--ar);object-fit:contain;background:#fff}
.vc-gallery .vc-wide{flex-basis:100%}
.vc-gallery .vc-small{flex:0 0 120px}
.vc-gallery figcaption{margin-top:auto}

/* faq */
.faq{margin-top:20px}
.faq h2{font-size:clamp(24px,3vw,34px);margin:0 0 18px}
.faq-list{display:grid;gap:10px}
.faq-item{border-radius:16px;border:1px solid var(--line);background:rgba(255,255,255,.025);transition:border-color .25s}
.faq-item[open]{border-color:rgba(255,255,255,.35);background:rgba(255,255,255,.05)}
.faq-item summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:center;padding:16px 18px;font-weight:600;color:#fff}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .icon{transition:transform .3s var(--ease);color:var(--accent)}
.faq-item[open] summary .icon{transform:rotate(45deg)}
.faq-item .prose{padding:0 18px 14px}

.pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:20px}
.pager a{display:flex;flex-direction:column;padding:18px 22px;color:var(--fg);transition:transform .3s var(--ease),border-color .3s}
.pager a:hover{transform:translateY(-3px);border-color:rgba(255,255,255,.4)}
.pager .next{text-align:right}
.pager small{color:var(--fg3)}
.pager strong{font-size:17px}

/* more */
.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:18px;margin:10px 0 30px}
.tool-card{display:flex;flex-direction:column;gap:12px;padding:22px;color:var(--fg);transition:transform .35s var(--ease),border-color .35s}
.tool-card:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.4);color:var(--fg)}
.tool-top{display:flex;gap:14px;align-items:center}
.tool-logo{width:52px;height:52px;flex:none;border-radius:14px;display:grid;place-items:center;background:rgba(255,255,255,.05);border:1px solid var(--line2)}
.tool-logo img{width:30px;height:30px}
.tool-card h3{margin:0;font-size:19px}
.tool-sub{margin:0;font-size:13.5px;color:var(--fg3)}
.tool-copy{margin:0;color:var(--fg2);font-size:14.5px;flex:1}
.tool-link{display:inline-flex;gap:6px;align-items:center;font-size:14px;color:var(--fg)}

/* lightbox & toast */
.lightbox{position:fixed;inset:0;z-index:100;background:rgba(8,9,10,.94);backdrop-filter:blur(10px);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:4vh 3vw;animation:fadein .25s}
.lb-stage{max-width:100%;max-height:84vh;overflow:auto;border-radius:12px}
.lb-stage img,.lb-stage svg{display:block;max-width:94vw;max-height:84vh;width:auto;height:auto;margin:auto}
.lb-stage svg{width:min(94vw,1500px);height:auto}
.lb-stage .zoomable::after{display:none}
.lb-cap{color:var(--fg2);font-size:14px;margin:12px 0 0;text-align:center;max-width:900px}
.lb-close{position:absolute;top:16px;right:16px;width:44px;height:44px;border-radius:50%;border:1px solid var(--line2);background:rgba(255,255,255,.08);color:#fff;font-size:18px;cursor:pointer}
.toast{position:fixed;left:50%;bottom:28px;z-index:120;transform:translate(-50%,20px);opacity:0;pointer-events:none;padding:10px 18px;border-radius:12px;background:#151617;border:1px solid rgba(255,255,255,.4);color:#fff;font-size:14px;transition:.3s var(--ease);box-shadow:0 10px 40px -10px #000}
.toast.show{opacity:1;transform:translate(-50%,0)}

.prose pre.pre-soft code{white-space:pre-wrap;word-break:break-word}
.prose pre.pre-soft{padding-top:44px}
.note-line{margin:1em 0 0;padding:12px 14px;border-radius:12px;background:rgba(52,211,153,.07);border:1px solid rgba(52,211,153,.22);font-size:14px;line-height:1.7}
.note-line strong{color:#6ee7b7}
/* 木智利 — editorial dark system. Layout rhythm modelled on linear.app; all code original. */
@font-face{font-family:"Inter var";src:url(/assets/fonts/inter-var.woff2) format("woff2");font-weight:100 900;font-display:swap;unicode-range:U+0020-007E,U+00A0-00FF,U+2013-2014,U+2018-2019,U+201C-201D,U+2022,U+2026,U+2190-2193,U+2197}
:root{
  --bg:#08090a;--bg1:#0f1011;--bg2:#141516;--bg3:#1c1d1f;
  --fg:#f7f8f8;--fg1:#d0d6e0;--fg2:#8a8f98;--fg3:#62666d;
  --line:rgba(255,255,255,.08);--line2:rgba(255,255,255,.12);--line3:rgba(255,255,255,.05);
  --accent:#d9a066;--green:#4cb782;
  --pad:46px;--maxw:1344px;--prose:700px;--header:72px;
  --font:"Inter var","Inter",-apple-system,BlinkMacSystemFont,"SF Pro Display","PingFang SC","Hiragino Sans GB","Noto Sans SC","Noto Sans CJK SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --serif:"Noto Serif SC","Noto Serif CJK SC","Source Han Serif SC","Songti SC","STSong",serif;
  --mono:"Berkeley Mono","JetBrains Mono",ui-monospace,"SFMono-Regular","SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
  --ease:cubic-bezier(.22,1,.36,1);
}
*{box-sizing:border-box}
html{background:var(--bg);scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--font);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-feature-settings:"cv11","ss01";overflow-x:hidden}
img{max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
::selection{background:rgba(255,255,255,.18);color:#fff}
h1,h2,h3{text-wrap:balance}
p{text-wrap:pretty}
.icon{width:1em;height:1em;vertical-align:-.14em;flex:none}
.wrap{max-width:calc(var(--maxw) + var(--pad)*2);margin:0 auto;padding:0 var(--pad)}
.muted{color:var(--fg3)}
.mono{font-family:var(--mono)}
.label{font-family:var(--mono);font-size:12px;line-height:1.4;letter-spacing:.02em;color:var(--fg2);text-transform:uppercase}
.author-tag{font-size:.86em;font-weight:400;color:var(--fg3)}
[hidden]{display:none!important}
.js .reveal{opacity:0;transform:translateY(10px);transition:opacity .7s var(--ease),transform .7s var(--ease);transition-delay:var(--d,0ms)}
.js .reveal.in{opacity:1;transform:none}

/* header */
.topbar{position:sticky;top:0;z-index:50;height:var(--header);background:rgba(8,9,10,.78);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--line3)}
.topbar-in{height:100%;display:flex;align-items:center;gap:28px}
.brand{display:inline-flex;align-items:center;gap:9px;color:var(--fg);font-weight:600;font-size:15px;letter-spacing:.02em}
.logo-mark{width:20px;height:20px;flex:none}
.topnav{display:flex;align-items:center;gap:2px;margin-left:12px}
.topnav a{font-size:13px;color:var(--fg2);padding:6px 10px;border-radius:6px;transition:color .15s}
.topnav a:hover,.topnav a.on{color:var(--fg)}
.top-right{margin-left:auto;display:flex;align-items:center;gap:8px}
.top-link{font-size:13px;color:var(--fg2);padding:6px 10px}
.top-link:hover{color:var(--fg)}
.menu-btn{display:none;width:36px;height:36px;border:0;background:none;position:relative;cursor:pointer;margin-right:-8px}
.menu-btn i{position:absolute;left:10px;right:10px;height:1.5px;background:var(--fg);transition:.3s var(--ease)}
.menu-btn i:first-child{top:14px}.menu-btn i:last-child{top:21px}
.menu-btn[aria-expanded=true] i:first-child{top:17.5px;transform:rotate(45deg)}
.menu-btn[aria-expanded=true] i:last-child{top:17.5px;transform:rotate(-45deg)}
.read-progress{position:absolute;left:0;right:0;bottom:-1px;height:1px}
.read-progress i{display:block;height:100%;transform-origin:0 50%;transform:scaleX(var(--p,0));background:rgba(255,255,255,.55)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:40px;padding:0 18px;border-radius:9999px;font-size:14px;font-weight:500;white-space:nowrap;border:1px solid transparent;transition:background .15s,border-color .15s,color .15s}
.btn-sm{height:32px;padding:0 14px;font-size:13px}
.btn-primary{background:#e5e5e6;color:#08090a}
.btn-primary:hover{background:#fff;color:#08090a}
.btn-secondary,.btn-ghost{background:var(--bg3);color:var(--fg);border-color:var(--line)}
.btn-secondary:hover,.btn-ghost:hover{background:#26272a;color:var(--fg)}
.btn-ghost.btn-sm{display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 14px;font-size:13px;border-radius:9999px}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--fg);font-weight:500}
.arrow-link .icon{width:14px;height:14px;transition:transform .2s var(--ease)}
.arrow-link:hover .icon{transform:translateX(3px)}
.arrow-link.dim{color:var(--fg2)}.arrow-link.dim:hover{color:var(--fg)}

/* home hero */
.hero{padding:clamp(88px,11vw,152px) 0 0}
.hero h1{margin:0;max-width:980px;font-size:clamp(40px,5.4vw,68px);line-height:1.08;font-weight:500;letter-spacing:-.03em}
.hero-row{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-top:28px}
.hero-lead{margin:0;max-width:560px;font-size:17px;line-height:1.65;color:var(--fg2)}
.hero-author{margin:16px 0 0;font-size:13px;color:var(--fg3)}
.hero-author b{color:var(--fg1);font-weight:500}
.hero-new{display:inline-flex;align-items:center;gap:10px;font-size:13px;color:var(--fg2);white-space:nowrap;padding-bottom:4px}
.hero-new .tag{font-family:var(--mono);font-size:11px;color:var(--fg);border:1px solid var(--line2);border-radius:4px;padding:1px 6px}
.hero-new b{color:var(--fg);font-weight:500}
.hero-new .icon{width:13px;height:13px;transition:transform .2s var(--ease)}
.hero-new:hover .icon{transform:translateX(3px)}
.hero-cta{display:flex;gap:10px;margin-top:32px}

/* product frame */
.shot{position:relative;margin-top:clamp(56px,7vw,88px);-webkit-mask-image:linear-gradient(#000 62%,transparent);mask-image:linear-gradient(#000 62%,transparent)}
.frame{display:grid;grid-template-columns:220px 260px minmax(0,1fr);height:clamp(420px,46vw,620px);border:1px solid var(--line2);border-radius:12px;background:linear-gradient(180deg,#0f1011,#0b0c0d);overflow:hidden;box-shadow:0 0 0 1px rgba(0,0,0,.6),0 40px 120px -40px rgba(0,0,0,.9)}
.fr-col{border-right:1px solid var(--line);padding:16px 10px;min-width:0;overflow:hidden}
.fr-brand{display:flex;align-items:center;gap:8px;padding:2px 8px 16px;font-size:13px;font-weight:600}
.fr-brand .logo-mark{width:16px;height:16px}
.fr-h{padding:6px 8px;font-size:11px;color:var(--fg3);font-family:var(--mono);text-transform:uppercase;letter-spacing:.04em}
.fr-item{display:flex;align-items:center;gap:8px;padding:6px 8px;border-radius:6px;font-size:12.5px;color:var(--fg2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.fr-item i{width:6px;height:6px;border:1px solid var(--fg3);border-radius:2px;flex:none}
.fr-item.on{background:rgba(255,255,255,.06);color:var(--fg)}
.fr-item.on i{border-color:var(--accent);background:var(--accent)}
.fr-steps{position:relative}
.fr-steps .fr-item{gap:10px}
.fr-steps .fr-item b{font-family:var(--mono);font-weight:400;font-size:11px;color:var(--fg3);width:18px}
.fr-hl{position:absolute;left:10px;right:10px;top:46px;height:31px;border-radius:6px;background:rgba(255,255,255,.06);animation:frhl 14s var(--ease) infinite}
@keyframes frhl{0%,12%{transform:translateY(0)}16%,28%{transform:translateY(31px)}32%,44%{transform:translateY(62px)}48%,60%{transform:translateY(93px)}64%,76%{transform:translateY(124px)}80%,92%{transform:translateY(155px)}96%,100%{transform:translateY(0)}}
.fr-main{padding:28px clamp(20px,3vw,44px);min-width:0;overflow:hidden}
.fr-crumb{font-size:12px;color:var(--fg3);margin-bottom:22px}
.fr-main .label{display:block;margin-bottom:8px}
.fr-main h3{margin:0 0 12px;font-size:22px;font-weight:500;letter-spacing:-.01em}
.fr-main p{margin:0 0 20px;font-size:13.5px;color:var(--fg2);max-width:520px;line-height:1.7}
.fr-body{display:grid;grid-template-columns:minmax(0,1fr) 180px;gap:24px;align-items:start}
.fr-lines i{display:block;height:7px;border-radius:4px;background:rgba(255,255,255,.07);margin:0 0 12px}
.fr-fig{border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#fff;aspect-ratio:3/4}
.fr-fig img{display:block;width:100%;height:100%;object-fit:cover;object-position:top}
.fr-pre{margin-top:18px;border:1px solid var(--line);border-radius:8px;background:#0b0c0d;padding:12px 14px;font:12px/1.7 var(--mono);color:var(--fg2)}
.fr-pre b{color:var(--fg);font-weight:400}

/* sections */
.sec{padding:clamp(88px,10vw,140px) 0 0}
.hr{border:0;border-top:1px solid var(--line);margin:0}
.statement{margin:0;max-width:1000px;font-size:clamp(28px,3.6vw,48px);line-height:1.18;font-weight:500;letter-spacing:-.025em;color:var(--fg)}
.statement span{color:var(--fg2)}
.figs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));margin-top:clamp(56px,6vw,80px);border-top:1px solid var(--line)}
.fig{padding:24px 28px 8px;border-left:1px solid var(--line);display:flex;flex-direction:column}
.fig:first-child{border-left:0;padding-left:0}
.fig:last-child{padding-right:0}
.fig .label{color:var(--fg3)}
.fig .cover{margin:18px 0 22px}
.fig h3{margin:0 0 6px;font-size:15px;font-weight:500}
.fig p{margin:0;font-size:15px;line-height:1.6;color:var(--fg2)}
.sec-head{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:40px;align-items:end;margin-bottom:clamp(40px,5vw,64px)}
.sec-head h2{margin:0;font-size:clamp(30px,3.6vw,48px);line-height:1.12;font-weight:500;letter-spacing:-.025em}
.sec-head h2 span{display:block;color:var(--fg2)}
.sec-head p{margin:0 0 14px;max-width:460px;font-size:15px;line-height:1.65;color:var(--fg2)}
.sec-head .arrow-link{margin-top:2px}
.sec-label{display:flex;align-items:center;gap:10px;margin-bottom:22px}
.sec-label i{width:6px;height:6px;border-radius:50%;background:var(--accent)}

/* guide index */
.idx{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--line);border-left:1px solid var(--line)}
.card{position:relative;display:flex;flex-direction:column;padding:22px 24px 22px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);color:var(--fg);transition:background .25s}
.card:hover{background:rgba(255,255,255,.018);color:var(--fg)}
.card-top{display:flex;justify-content:space-between;gap:12px}
.card-top .label{color:var(--fg3)}
.card .cover{margin:14px 0 18px}
.card h3{margin:0 0 6px;font-size:17px;font-weight:500;letter-spacing:-.01em}
.card p{margin:0;font-size:14px;line-height:1.65;color:var(--fg2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{display:flex;justify-content:space-between;align-items:center;margin-top:auto;padding-top:18px;font-size:13px;color:var(--fg3)}
.card-foot .mono{font-size:12px}
.card-foot .go{display:inline-flex;align-items:center;gap:6px;color:var(--fg2);transition:color .2s}
.card-foot .go .icon{width:13px;height:13px;transition:transform .25s var(--ease)}
.card:hover .go{color:var(--fg)}.card:hover .go .icon{transform:translateX(3px)}
.card.wide,.card.span2{grid-column:span 2;display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);column-gap:36px}
.card.wide .card-top,.card.span2 .card-top{grid-column:1/-1}
.card.wide .cover,.card.span2 .cover{grid-row:2/5;margin:14px 0 0}
.card.wide .card-txt,.card.span2 .card-txt{display:flex;flex-direction:column;padding-top:28px}
.card.wide h3,.card.span2 h3{font-size:24px;margin-bottom:10px}
.card.wide p,.card.span2 p{-webkit-line-clamp:4;font-size:15px}
.card-txt{display:flex;flex-direction:column;flex:1}

/* features list (virtual card) */
.feat-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--line)}
.feat{padding:26px 28px 30px 0;border-bottom:1px solid var(--line)}
.feat+.feat{padding-left:28px;border-left:1px solid var(--line)}
.feat:nth-child(3n+1){padding-left:0;border-left:0}
.feat svg{width:18px;height:18px;fill:none;stroke:var(--fg2);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;margin-bottom:16px}
.feat h3{margin:0 0 6px;font-size:15px;font-weight:500}
.feat p{margin:0;font-size:14px;line-height:1.65;color:var(--fg2)}
.feat-note{margin:20px 0 0;font-size:13px;line-height:1.7;color:var(--fg3);max-width:820px}

/* closing CTA */
.cta{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;padding:clamp(96px,11vw,160px) 0 clamp(80px,9vw,120px)}
.cta h2{margin:0;font-family:var(--serif);font-weight:500;font-size:clamp(32px,4.4vw,58px);line-height:1.15;letter-spacing:-.01em}
.cta h2 span{display:block;color:var(--fg2)}
.cta-btns{display:flex;gap:10px;flex:none}

/* footer */
.footer{border-top:1px solid var(--line)}
.footer-in{display:grid;grid-template-columns:1.4fr repeat(4,minmax(0,1fr));gap:32px;padding:56px 0 64px}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{margin:0;font-size:13px;line-height:1.7;color:var(--fg3);max-width:280px}
.footer-author{color:var(--fg1)!important;margin-bottom:8px!important}
.footer-h{margin:0 0 16px;font-size:13px;font-weight:500;color:var(--fg)}
.footer-col a{display:block;font-size:13px;color:var(--fg2);padding:4px 0;transition:color .15s}
.footer-col a:hover{color:var(--fg)}
.footer-bar{display:flex;justify-content:space-between;gap:16px;padding:20px 0 40px;border-top:1px solid var(--line3);font-size:12px;color:var(--fg3)}
.footer-bar p{margin:0}
.footer-bar a{color:var(--fg3)}.footer-bar a:hover{color:var(--fg)}

/* guide hero */
.g-hero{padding:56px 0 64px}
.crumbs{display:flex;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--fg3);margin-bottom:40px}
.crumbs a{color:var(--fg2)}.crumbs a:hover{color:var(--fg)}
.g-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:clamp(32px,5vw,80px);align-items:center}
.g-hero .label{display:block;margin-bottom:18px;color:var(--fg3)}
.g-hero h1{margin:0 0 18px;font-size:clamp(34px,4.6vw,58px);line-height:1.1;font-weight:500;letter-spacing:-.03em}
.hero-desc{margin:0;max-width:600px;font-size:17px;line-height:1.7;color:var(--fg2)}
.meta{display:flex;flex-wrap:wrap;align-items:center;margin-top:28px;font-size:13px;color:var(--fg2)}
.meta span{padding:0 14px;border-left:1px solid var(--line2);line-height:1.2}
.meta span:first-child{padding-left:0;border-left:0}
.meta b{color:var(--fg);font-weight:500;font-family:var(--mono);font-size:12.5px}
.meta .author-chip{color:var(--fg1)}
.g-fig{position:relative;border:1px solid var(--line);border-radius:12px;padding:16px 18px 6px;background:linear-gradient(180deg,rgba(255,255,255,.015),transparent)}
.g-fig .label{display:flex;justify-content:space-between;margin:0}
.g-fig .cover{margin:6px 0 0}
.vc-link{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:28px}
.vc-link-note{font-size:13px;color:var(--fg3)}
.vc-link-note a{color:var(--fg2);text-decoration:underline;text-decoration-color:var(--line2);text-underline-offset:3px}
.guide-intro{margin-top:36px;max-width:var(--prose)}

/* advantage strips inside guides */
.vc-adv{margin-bottom:72px}
.vc-adv>.eyebrow{display:block;margin:0 0 18px;font-family:var(--mono);font-size:12px;color:var(--fg3);text-transform:uppercase;letter-spacing:.02em}
.adv-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--line)}
.mw-adv .adv-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
.adv-item{padding:22px 24px 26px;border-bottom:1px solid var(--line);border-left:1px solid var(--line)}
.adv-grid>.adv-item:nth-child(3n+1){border-left:0;padding-left:0}
.adv-ic{display:block;color:var(--fg2);margin-bottom:14px}
.adv-ic svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.adv-item h3{margin:0 0 6px;font-size:15px;font-weight:500}
.adv-item p{margin:0;font-size:14px;line-height:1.65;color:var(--fg2)}
.adv-note{margin:18px 0 0;font-size:13px;line-height:1.7;color:var(--fg3);max-width:860px}

/* guide layout */
.guide-layout{display:grid;grid-template-columns:232px minmax(0,var(--prose));gap:clamp(40px,6vw,96px);justify-content:center;align-items:start;border-top:1px solid var(--line);padding-top:8px;padding-bottom:40px}
.sidebar{position:sticky;top:calc(var(--header) + 32px);padding-top:48px}
.side-card{max-height:calc(100vh - var(--header) - 80px);overflow:auto;scrollbar-width:none}
.side-card::-webkit-scrollbar{display:none}
.side-top{display:flex;justify-content:space-between;align-items:center;font-family:var(--mono);font-size:12px;color:var(--fg3);text-transform:uppercase;margin-bottom:12px}
.side-count b{color:var(--fg);font-weight:400}
.side-bar{height:1px;background:var(--line);margin-bottom:16px}
.side-bar i{display:block;height:100%;transform-origin:0 50%;transform:scaleX(var(--sp,0));background:var(--fg);transition:transform .4s var(--ease)}
.side-nav{list-style:none;margin:0;padding:0;border-left:1px solid var(--line)}
.side-nav li{margin:0}
.side-nav a{position:relative;display:flex;gap:10px;align-items:baseline;padding:6px 0 6px 14px;font-size:13px;line-height:1.5;color:var(--fg2);transition:color .15s}
.side-nav a::before{content:"";position:absolute;left:-1px;top:6px;bottom:6px;width:1px;background:transparent;transition:background .2s}
.side-nav a:hover{color:var(--fg)}
.side-nav a.on{color:var(--fg)}
.side-nav a.on::before{background:var(--fg)}
.side-nav .n{flex:none;font-family:var(--mono);font-size:11px;color:var(--fg3);font-variant-numeric:tabular-nums}
.side-nav a.on .n{color:var(--accent)}
.side-nav .t small{margin-left:6px;font-size:11px;color:var(--fg3)}
.nav-part{padding:14px 0 4px 14px;font-family:var(--mono);font-size:11px;color:var(--fg3);text-transform:uppercase;letter-spacing:.04em}
.nav-part:first-child{padding-top:2px}
.side-faq{display:block;margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--fg2)}
.side-faq:hover{color:var(--fg)}
.steps{min-width:0}
.step{position:relative;padding:56px 0 60px;border-top:1px solid var(--line);scroll-margin-top:calc(var(--header) + 16px)}
.step:first-child{border-top:0}
.step-head{margin-bottom:26px}
.step-num{display:none}
.kicker{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:0 0 12px;font-family:var(--mono);font-size:12px;color:var(--fg3);text-transform:uppercase;letter-spacing:.02em}
.badge{font-family:var(--font);text-transform:none;font-size:11.5px;color:var(--fg2);border:1px solid var(--line2);border-radius:4px;padding:0 6px}
.step-head h2{margin:0;font-size:clamp(22px,2.4vw,28px);line-height:1.3;font-weight:500;letter-spacing:-.015em}
.guide-outro{display:grid;gap:18px;padding:48px 0;border-top:1px solid var(--line)}
.guide-outro>section,.refs{padding:22px 24px}

/* faq */
.faq{padding:72px 0 24px;border-top:1px solid var(--line)}
.faq .eyebrow{display:block;margin:0 0 14px;font-family:var(--mono);font-size:12px;color:var(--fg3);text-transform:uppercase}
.faq h2{margin:0 0 32px;font-size:clamp(24px,2.8vw,32px);font-weight:500;letter-spacing:-.02em}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:center;padding:18px 0;font-size:15px;font-weight:500;color:var(--fg)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .icon{width:14px;height:14px;color:var(--fg3);transition:transform .3s var(--ease)}
.faq-item[open] summary .icon{transform:rotate(45deg)}
.faq-item .prose{padding:0 0 20px}

/* pager / next */
.pager{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:48px}
.pager a{display:flex;flex-direction:column;gap:4px;padding:18px 20px;border:1px solid var(--line);border-radius:10px;color:var(--fg);transition:background .2s,border-color .2s}
.pager a:hover{background:rgba(255,255,255,.02);border-color:var(--line2)}
.pager .next{text-align:right}
.pager small{font-size:12px;color:var(--fg3);font-family:var(--mono);text-transform:uppercase}
.pager strong{font-size:15px;font-weight:500}
.next-up{display:grid;grid-template-columns:1fr auto;gap:4px 16px;align-items:center;margin:8px 0 0;padding:20px 22px;border:1px solid var(--line);border-radius:10px;color:inherit}
.next-up small{font-family:var(--mono);font-size:12px;color:var(--fg3);text-transform:uppercase}
.next-up strong{font-size:17px;font-weight:500}
.next-up span{font-size:14px;color:var(--fg2)}
.next-up .icon{grid-column:2;grid-row:1/4;width:18px;height:18px;color:var(--fg2)}

/* more page */
.tool-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--line);border-left:1px solid var(--line);margin:0 0 8px}
.tool-card{display:flex;flex-direction:column;gap:14px;padding:26px 26px 24px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);color:var(--fg);transition:background .25s}
.tool-card:hover{background:rgba(255,255,255,.018);color:var(--fg)}
.tool-top{display:flex;gap:14px;align-items:center}
.tool-logo{width:40px;height:40px;flex:none;border-radius:8px;display:grid;place-items:center;border:1px solid var(--line);background:var(--bg1)}
.tool-logo img{width:22px;height:22px}
.tool-logo.mono img{filter:grayscale(1) brightness(1.6)}
.tool-card h3{margin:0;font-size:16px;font-weight:500}
.tool-sub{margin:2px 0 0;font-size:12.5px;color:var(--fg3)}
.tool-copy{margin:0;flex:1;font-size:14px;line-height:1.65;color:var(--fg2)}
.tool-link{display:inline-flex;gap:6px;align-items:center;font-size:13px;color:var(--fg2)}
.tool-card:hover .tool-link{color:var(--fg)}

/* ---- content re-theme ---- */
.prose{font-size:16px;line-height:1.85;color:var(--fg1)}
.prose p{margin:.85em 0}
.prose h3{font-size:17px;font-weight:500;color:var(--fg)}
.prose h4{font-weight:500}
.prose strong{color:var(--fg);font-weight:600}
.prose li::marker{color:var(--fg3)}
.prose a{color:var(--fg);text-decoration-color:rgba(255,255,255,.28)}
.prose a:hover{text-decoration-color:var(--fg)}
.prose :not(pre)>code{font-size:.86em;padding:.14em .4em;border-radius:4px;background:rgba(255,255,255,.06);border:1px solid var(--line);color:var(--fg)}
.prose pre{border-radius:8px;background:var(--bg1);border:1px solid var(--line);box-shadow:none;font-size:13px;line-height:1.7}
.pre-wrap pre{padding-top:46px}
.pre-wrap::after{content:"";position:absolute;left:1px;right:1px;top:1px;height:37px;border-radius:7px 7px 0 0;border-bottom:1px solid var(--line3);pointer-events:none}
.copy-btn{height:28px;padding:0 10px;border-radius:6px;font-size:12px;color:var(--fg2);background:transparent;border:1px solid var(--line)}
.copy-btn:hover{color:var(--fg);background:rgba(255,255,255,.05);border-color:var(--line2)}
.copy-btn.ok{color:var(--green);border-color:rgba(76,183,130,.4);background:transparent}
.prose figure,.prose .shot{border-radius:8px;border:1px solid var(--line);background:var(--bg1);box-shadow:none}
.prose figure img,.prose figure svg[class$="-screenshot"]{background:var(--bg1)}
.prose figcaption{padding:10px 14px 12px;font-size:13px;color:var(--fg2);border-top:1px solid var(--line)}
.prose figcaption strong{font-size:13.5px;font-weight:500}
.zoomable::after{content:"放大";font-size:11px;border-radius:4px;background:rgba(8,9,10,.85);border-color:var(--line2)}
.prose .lead{font-size:16.5px;color:var(--fg);padding-left:16px;border-left:1px solid var(--fg3)}
.prose aside,.prose .callout{border-radius:8px;background:rgba(255,255,255,.025);border:1px solid var(--line)}
.prose .callout.warn{background:rgba(217,160,102,.05);border-color:rgba(217,160,102,.28)}
.prose dl>div,.prose details,.op-card{border-radius:8px;background:transparent;border-color:var(--line)}
.prose details>summary{font-weight:500}
.prose details>summary::before{content:"+";color:var(--fg3)}
.prose details[open]>summary::before{transform:rotate(45deg)}
.prose th,.prose td{border-color:var(--line)}
.prose thead th{background:rgba(255,255,255,.03);font-weight:500}
.prose .chip-link,.prose .btn-link,.prose .link-row a,.prose [class$="-citations"] a{padding:4px 12px;border-radius:9999px;font-size:13px;color:var(--fg1);background:transparent;border:1px solid var(--line2)}
.prose .chip-link:hover,.prose .btn-link:hover,.prose .link-row a:hover,.prose [class$="-citations"] a:hover{background:rgba(255,255,255,.05);color:var(--fg)}
.prose .btn-link.primary{background:#e5e5e6;color:#08090a;border-color:transparent}
.prose .btn-link.primary:hover{background:#fff;color:#08090a}
.prose button:not(.copy-btn):not(.choice):not(.vtab){border-radius:6px;background:var(--bg3);border-color:var(--line)}
.prose button.primary,.prose .button.primary{background:#e5e5e6;color:#08090a}
.prose input:not([type=radio]):not([type=checkbox]),.prose select,.prose textarea{border-radius:6px;background:var(--bg1);border-color:var(--line2)}
.prose input:focus,.prose select:focus,.prose textarea:focus{border-color:rgba(255,255,255,.4);box-shadow:0 0 0 3px rgba(255,255,255,.06)}
.done-box{border-radius:8px;background:transparent;border:1px solid var(--line)}
.done-title{color:var(--green);font-weight:500}
.done-box li::marker{color:var(--green)}
.ip-expected{border-radius:6px;background:transparent;border:1px solid var(--line)}
.ip-expected strong,.note-line strong{color:var(--green)}
.op-num{color:var(--fg3)}
.note-line{border-radius:8px;background:transparent;border:1px solid var(--line)}
.choice{border-radius:8px;border-color:var(--line);background:transparent}
.choice strong{font-weight:500}
.choice:hover{border-color:var(--line2)}
.choice.on{border-color:rgba(255,255,255,.45);background:rgba(255,255,255,.035);box-shadow:none}
.vtabs-bar{border-radius:8px;padding:3px;background:var(--bg1);border-color:var(--line)}
.vtab{border-radius:6px;font-size:13px}
.vtab.on{background:var(--bg3);color:var(--fg);box-shadow:inset 0 0 0 1px var(--line2)}
.route-picker{border-radius:10px;border:1px solid var(--line);background:var(--bg1)}
.route-picker label span{border-radius:9999px;border-color:var(--line)}
.route-picker input:checked+span{border-color:rgba(255,255,255,.45);background:rgba(255,255,255,.05)}
.glass{border:1px solid var(--line);border-radius:10px;background:transparent}
.step.glass,.pager a.glass,.tool-card.glass,.next-up.glass{border-radius:0;border:0;background:none}
.step.glass{border-top:1px solid var(--line)}
.steps>.step.glass:first-child{border-top:0}
.pager a.glass{border:1px solid var(--line);border-radius:10px}
.tool-card.glass{border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.next-up.glass{border:1px solid var(--line);border-radius:10px}
.guard-scheme-stage,.guard-scheme-gateway,.guard-scheme-result,.guard-scheme-data li{border-radius:6px}
.guard-scheme-title{color:var(--fg2)}
.guard-scheme-gateway{background:rgba(255,255,255,.03);border-color:var(--line2)}
.vc-head{background:none!important;-webkit-background-clip:initial!important;background-clip:initial!important;color:var(--fg)!important;font-weight:500}
.vc-gallery .vc-fig{border-radius:8px}
mark.hl-red{color:#eb7a6a}
.lightbox{background:rgba(8,9,10,.95)}
.lb-close{border-radius:9999px;border-color:var(--line2);background:var(--bg3);font-size:14px}
.toast{border-radius:8px;background:#151617;border:1px solid var(--line2);box-shadow:0 12px 40px -12px #000}

/* ---- responsive ---- */
@media (max-width:1180px){
  :root{--pad:32px}
  .frame{grid-template-columns:200px minmax(0,1fr)}
  .fr-col.fr-steps{display:none}
  .mw-adv .adv-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:980px){
  :root{--pad:24px;--header:60px}
  .topnav{position:fixed;top:var(--header);left:0;right:0;flex-direction:column;align-items:stretch;gap:0;margin:0;padding:8px var(--pad) 20px;background:#08090a;border-bottom:1px solid var(--line);opacity:0;transform:translateY(-6px);pointer-events:none;transition:.25s var(--ease)}
  .topnav.open{opacity:1;transform:none;pointer-events:auto}
  .topbar:has(.topnav.open){background:#08090a;-webkit-backdrop-filter:none;backdrop-filter:none}
  .topnav a{padding:13px 0;font-size:15px;border-bottom:1px solid var(--line3);border-radius:0}
  .menu-btn{display:block}
  .top-link{display:none}
  .idx,.tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .card.wide{grid-column:span 2}
  .card.span2{grid-column:span 2}
  .feat-grid,.adv-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .feat,.feat+.feat,.adv-item{padding:22px 22px 24px;border-left:1px solid var(--line)}
  .feat:nth-child(odd),.adv-grid>.adv-item:nth-child(odd){border-left:0;padding-left:0}
  .adv-grid>.adv-item:nth-child(3n+1){border-left:1px solid var(--line);padding-left:22px}
  .adv-grid>.adv-item:nth-child(odd){border-left:0;padding-left:0}
  .figs{grid-template-columns:1fr}
  .fig,.fig:first-child,.fig:last-child{padding:24px 0 28px;border-left:0;border-bottom:1px solid var(--line)}
  .fig .cover{max-width:460px}
  .sec-head{grid-template-columns:1fr;gap:18px}
  .g-grid{grid-template-columns:1fr}
  .footer-in{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1/-1}
  .guide-layout{grid-template-columns:minmax(0,1fr);gap:0;border-top:0;padding-top:0}
  .sidebar{position:sticky;top:var(--header);z-index:20;margin:0 calc(var(--pad)*-1);padding:10px 0;background:rgba(8,9,10,.9);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .side-card{max-height:none;overflow:visible}
  .side-top,.side-faq,.nav-part{display:none}
  .side-bar{margin:0 var(--pad) 10px}
  .side-nav{display:flex;gap:6px;overflow-x:auto;padding:0 var(--pad);border:0;scrollbar-width:none;scroll-snap-type:x proximity}
  .side-nav::-webkit-scrollbar{display:none}
  .side-nav li{flex:none;scroll-snap-align:start}
  .side-nav a{white-space:nowrap;padding:5px 12px;border:1px solid var(--line);border-radius:9999px;font-size:12.5px}
  .side-nav a::before{display:none}
  .side-nav a.on{border-color:rgba(255,255,255,.4);background:rgba(255,255,255,.04)}
  .side-nav .t small{display:none}
  .migrate-guide .route-picker{position:static}
  .cta{flex-direction:column;align-items:flex-start}
}
@media (max-width:640px){
  :root{--pad:20px}
  .hero{padding-top:64px}
  .hero h1{font-size:clamp(34px,9.4vw,44px);letter-spacing:-.025em}
  .hero-row{flex-direction:column;align-items:flex-start;gap:22px}
  .hero-lead{font-size:16px}
  .hero-cta .btn{flex:1}
  .frame{grid-template-columns:minmax(0,1fr);height:440px}
  .fr-col{display:none}
  .fr-body{grid-template-columns:minmax(0,1fr) 112px;gap:16px}
  .statement{font-size:26px}
  .idx,.tool-grid{grid-template-columns:1fr}
  .card.wide,.card.span2{grid-column:auto;display:flex}
  .card.wide .card-txt,.card.span2 .card-txt{padding-top:0}
  .card.wide h3,.card.span2 h3{font-size:19px}
  .feat-grid,.adv-grid,.mw-adv .adv-grid{grid-template-columns:1fr}
  .feat,.feat+.feat,.adv-item,.adv-grid>.adv-item:nth-child(3n+1){padding:20px 0;border-left:0!important}
  .g-hero{padding:32px 0 44px}
  .crumbs{margin-bottom:28px}
  .hero-desc{font-size:16px}
  .meta{row-gap:10px}
  .step{padding:40px 0 44px}
  .prose{font-size:15.5px;line-height:1.8}
  .pager{grid-template-columns:1fr}
  .footer-in{gap:28px;padding:44px 0 40px}
  .footer-bar{flex-direction:column}
  .cta-btns{width:100%}.cta-btns .btn{flex:1}
  .ip-fields{grid-template-columns:1fr}
  .ip-node-output{flex-direction:column}
  .vc-gallery .vc-fig{flex-basis:100%}
  .vc-gallery .vc-small{flex:0 0 96px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .js .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ===== 木智利 v3 layer — warm dark, dither field, engineering details. Original code. ===== */
@font-face{font-family:"Geist Mono";src:url(/assets/fonts/geist-mono.woff2) format("woff2");font-weight:100 900;font-display:swap}
:root{
  --bg:#0a0a0b;--bg1:#111112;--bg2:#161617;--bg3:#1e1e20;
  --fg:#f6f1eb;--fg1:#d8d1c8;--fg2:#9a928a;--fg3:#69625b;
  --line:rgba(255,240,226,.085);--line2:rgba(255,240,226,.14);--line3:rgba(255,240,226,.05);
  --accent:#ff8a3d;--acc:#ff8a3d;--acc2:#ffb77a;--acc-d:rgba(255,138,61,.14);--green:#5fd39a;
  --mono:"Geist Mono","JetBrains Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --maxw:1320px;
}
html,body{background:var(--bg)}
::selection{background:rgba(255,138,61,.35);color:#fff}
.grain{position:fixed;inset:-50%;z-index:90;pointer-events:none;opacity:.07;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 .9 0'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");mix-blend-mode:overlay}
.hud{display:inline-flex;align-items:center;gap:9px;margin:0;font:500 11.5px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--fg2)}
.pulse{width:6px;height:6px;border-radius:50%;background:var(--acc);box-shadow:0 0 0 0 rgba(255,138,61,.6);animation:pulse 2.2s infinite;flex:none}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(255,138,61,.55)}70%{box-shadow:0 0 0 8px rgba(255,138,61,0)}100%{box-shadow:0 0 0 0 rgba(255,138,61,0)}}
.ch{display:inline;position:relative}
.ch.g{color:transparent}.ch.g::after{content:attr(data-g);position:absolute;inset:0;display:grid;place-items:center;color:var(--acc);font:400 .6em var(--mono);-webkit-text-fill-color:var(--acc)}
.ch.g.w::after{opacity:.22}
canvas.field{position:absolute;inset:0;width:100%;height:100%;display:block;opacity:0;transition:opacity 1.2s ease}
canvas.field.live{opacity:1}

/* header */
.topbar{background:rgba(10,10,11,.55);border-bottom-color:transparent;transition:background .3s,border-color .3s}
.topbar.stuck{background:rgba(10,10,11,.82);border-bottom-color:var(--line)}
.brand-name{letter-spacing:.06em}
.topnav a{font-size:13px;color:var(--fg2);position:relative}
.topnav a.on{color:var(--fg)}
.topnav a.on::after{content:"";position:absolute;left:10px;right:10px;bottom:0;height:1px;background:var(--acc)}
.sys{display:inline-flex;align-items:center;gap:7px;font:500 11px var(--mono);letter-spacing:.06em;color:var(--fg3);margin-right:8px}
.sys i{width:6px;height:6px;border-radius:50%;background:var(--green);box-shadow:0 0 8px rgba(95,211,154,.6)}
.read-progress i{background:var(--acc)!important}
.btn{transition:transform .25s var(--ease),background .2s,border-color .2s,color .2s;will-change:transform}
.btn-primary{background:var(--acc)!important;color:#140a03!important;border-color:var(--acc)!important;font-weight:600}
.btn-primary:hover{background:var(--acc2)!important;border-color:var(--acc2)!important}
.btn-secondary{background:rgba(255,240,226,.04);border:1px solid var(--line2);color:var(--fg)}
.btn-secondary:hover{border-color:rgba(255,240,226,.3);background:rgba(255,240,226,.07)}
.btn .icon{margin-left:6px}

/* hero */
.hero3{position:relative;min-height:min(880px,100svh);display:flex;flex-direction:column;justify-content:center;overflow:hidden;margin-top:calc(var(--header) * -1);padding:calc(var(--header) + 60px) 0 40px;border-bottom:1px solid var(--line)}
.hero3-mask{position:absolute;inset:0;pointer-events:none;background:linear-gradient(90deg,rgba(10,10,11,.92) 0%,rgba(10,10,11,.55) 42%,rgba(10,10,11,.1) 70%),linear-gradient(0deg,var(--bg) 0%,transparent 30%),repeating-linear-gradient(90deg,rgba(255,240,226,.035) 0 1px,transparent 1px 88px),repeating-linear-gradient(0deg,rgba(255,240,226,.035) 0 1px,transparent 1px 88px)}
.hero3-in{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px;align-items:center;width:100%}
.hero3 h1{margin:22px 0 24px;font-size:clamp(40px,4.5vw,66px);word-break:keep-all;line-height:1.06;font-weight:600;letter-spacing:-.035em;color:var(--fg)}
.hero3 .hero-lead{max-width:540px;font-size:17px;line-height:1.75;color:var(--fg1);margin:0 0 30px}
.hero3 .hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin:0 0 26px}
.hero3 .hero-author{font-size:13px;color:var(--fg2);margin:0}
.hero3 .hero-author b{color:var(--fg);font-weight:500}
.hero3-foot{width:100%;position:relative;z-index:2;display:flex;justify-content:space-between;gap:20px;margin-top:56px;font:500 10.5px var(--mono);letter-spacing:.12em;color:var(--fg3)}

/* terminal */
.term{position:relative;border-radius:14px;background:rgba(14,13,13,.82);border:1px solid var(--line2);box-shadow:0 40px 120px -30px rgba(0,0,0,.9),0 0 0 1px rgba(0,0,0,.6),inset 0 1px 0 rgba(255,240,226,.06);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);transform:perspective(1200px) rotateX(var(--rx,0deg)) rotateY(var(--ry,-6deg));transition:transform .5s var(--ease);overflow:hidden;font:13px/1.75 var(--mono);color:var(--fg1)}
.term::before{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(500px circle at var(--lx,70%) var(--ly,0%),rgba(255,138,61,.10),transparent 45%);opacity:.8}
.term-bar{display:flex;align-items:center;gap:7px;padding:12px 14px;border-bottom:1px solid var(--line)}
.term-bar i{width:10px;height:10px;border-radius:50%;background:rgba(255,240,226,.14)}
.term-bar i:first-child{background:var(--acc)}
.term-bar span{margin-left:10px;font-size:11.5px;color:var(--fg3)}
.term-body{height:330px;overflow:hidden;padding:16px 18px}
.tl{white-space:pre-wrap;word-break:break-all}
.tl .ps{color:var(--acc)}
.tl.cmd{color:var(--fg);margin-top:6px}
.tl.cmd:first-child{margin-top:0}
.tl .ok{color:var(--green)}
.tl .ls{color:var(--fg2)}
.tl .ls .d{color:var(--fg3);margin-right:6px}
.tl .ls .r{float:right;color:var(--fg3)}
.caret{display:inline-block;width:8px;height:15px;background:var(--acc);vertical-align:-2px;margin-left:2px;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.tl.prog{display:flex;align-items:center;gap:12px;color:var(--fg2)}
.tl.prog .bar{flex:1;height:4px;background:rgba(255,240,226,.08);border-radius:2px;overflow:hidden}
.tl.prog .bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--acc),var(--acc2))}
.tl.prog .pc{color:var(--fg);min-width:6ch;text-align:right}
.term-foot{display:flex;justify-content:space-between;padding:9px 16px;border-top:1px solid var(--line);font-size:10.5px;letter-spacing:.08em;color:var(--fg3);text-transform:uppercase}

/* marquee */
.marquee{overflow:hidden;border-bottom:1px solid var(--line);padding:18px 0;-webkit-mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent)}
.mq-track{display:flex;width:max-content;align-items:center;gap:30px;animation:mq 40s linear infinite;font-size:clamp(18px,2vw,26px);font-weight:500;letter-spacing:-.01em;color:var(--fg2)}
.mq-track span{white-space:nowrap}
.mq-track i{font-style:normal;color:var(--acc);font-size:.7em}
.marquee:hover .mq-track{animation-play-state:paused}
@keyframes mq{to{transform:translateX(-50%)}}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-left:1px solid var(--line)}
.stat{padding:34px 28px 30px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat b{display:block;font:500 clamp(38px,4.4vw,60px)/1 var(--mono);letter-spacing:-.04em;color:var(--fg);font-variant-numeric:tabular-nums}
.stat:first-child b{color:var(--acc)}
.stat span{display:block;margin-top:14px;font-size:15px;color:var(--fg)}
.stat small{display:block;margin-top:4px;font-size:13px;color:var(--fg3)}

/* section heads */
.sec{padding:120px 0 0}
.sec-head3{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:8px 48px;align-items:end;margin-bottom:44px}
.sec-head3 .hud{grid-column:1/-1;margin-bottom:6px}
.sec-head3 h2{margin:0;font-size:clamp(34px,4vw,56px);line-height:1.05;font-weight:600;letter-spacing:-.035em}
.sec-head3 p:not(.hud){margin:0;max-width:520px;color:var(--fg2);font-size:15px;line-height:1.75;justify-self:end}

/* guide index — equal cards */
.idx3{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}
.idx3 .card{position:relative;display:flex;flex-direction:column;padding:0;border:1px solid var(--line);border-radius:14px;background:linear-gradient(180deg,rgba(255,240,226,.025),rgba(255,240,226,.005));overflow:hidden;transform:perspective(900px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg));transition:transform .45s var(--ease),border-color .3s,opacity .7s var(--ease);min-height:0}
.js .idx3 .card.reveal{transform:perspective(900px) translateY(14px)}
.js .idx3 .card.reveal.in{transform:perspective(900px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg))}
.idx3 .card::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;background:radial-gradient(340px circle at var(--lx,50%) var(--ly,0%),rgba(255,138,61,.13),transparent 50%);opacity:0;transition:opacity .3s}
.idx3 .card::before{content:"";position:absolute;inset:-1px;border-radius:inherit;padding:1px;pointer-events:none;background:radial-gradient(260px circle at var(--lx,50%) var(--ly,0%),rgba(255,138,61,.7),transparent 60%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .3s}
.idx3 .card.lit::after,.idx3 .card.lit::before{opacity:1}
.idx3 .card:hover{border-color:var(--line2)}
.idx3 .card-top{display:flex;justify-content:space-between;padding:14px 16px 0;font:500 10.5px var(--mono);letter-spacing:.1em;color:var(--fg3);text-transform:uppercase;margin:0}
.idx3 .card .cover{aspect-ratio:1/0.92;margin:4px 0 0;border:0;background:none;border-radius:0}
.idx3 .card-txt{padding:4px 18px 0;flex:1}
.idx3 .card h3{margin:0 0 8px;font-size:16.5px;font-weight:600;letter-spacing:-.01em;color:var(--fg)}
.idx3 .card p{margin:0;font-size:13px;line-height:1.65;color:var(--fg2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.idx3 .card-foot{display:flex;align-items:center;gap:10px;margin:18px 0 0;padding:12px 16px;border-top:1px solid var(--line);font:500 10.5px var(--mono);letter-spacing:.06em;color:var(--fg3);text-transform:uppercase}
.idx3 .card-foot span:nth-child(2){margin-left:auto}
.idx3 .card-foot .go{display:grid;place-items:center;width:22px;height:22px;border-radius:50%;border:1px solid var(--line2);color:var(--fg2);transition:.3s}
.idx3 .card:hover .go{background:var(--acc);border-color:var(--acc);color:#140a03;transform:rotate(-45deg)}

/* scrollytelling */
.story-in{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:72px}
.story-sticky{position:sticky;top:calc(var(--header) + 40px);height:min(560px,calc(100vh - 160px));align-self:start}
.story-vis{position:relative;height:100%;border:1px solid var(--line2);border-radius:16px;background:#0d0d0e;overflow:hidden;box-shadow:0 40px 120px -40px rgba(0,0,0,.9)}
.sv-bar{display:flex;align-items:center;gap:7px;height:40px;padding:0 14px;border-bottom:1px solid var(--line)}
.sv-bar i{width:9px;height:9px;border-radius:50%;background:rgba(255,240,226,.12)}
.sv-url{margin-left:12px;padding:3px 12px;border-radius:6px;background:rgba(255,240,226,.04);font:11px var(--mono);color:var(--fg3)}
.sv{position:absolute;inset:40px 0 0;padding:26px;opacity:0;transform:translateY(16px) scale(.985);transition:opacity .6s var(--ease),transform .6s var(--ease);pointer-events:none}
.story-vis[data-stage="0"] .sv0,.story-vis[data-stage="1"] .sv1,.story-vis[data-stage="2"] .sv2{opacity:1;transform:none;pointer-events:auto}
.sv0{display:grid;grid-template-columns:200px 1fr;gap:24px}
.sv-toc{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--line)}
.sv-toc span{display:flex;gap:10px;padding:7px 12px;font-size:12.5px;color:var(--fg3);margin-left:-1px;border-left:1px solid transparent;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sv-toc span b{font:500 11px var(--mono);color:var(--fg3)}
.sv-toc span.on{color:var(--fg);border-left-color:var(--acc)}
.sv-toc span.on b{color:var(--acc)}
.sv-page .k{margin:0 0 8px;font:500 11px var(--mono);letter-spacing:.1em;color:var(--acc)}
.sv-page h4{margin:0 0 20px;font-size:22px;font-weight:600;letter-spacing:-.02em}
.sk{display:flex;flex-direction:column;gap:11px}
.sk i{display:block;height:7px;border-radius:4px;background:rgba(255,240,226,.07)}
.sv-shot{position:relative;height:100%;border-radius:10px;overflow:hidden;border:1px solid var(--line);background:#000}
.sv-shot img{width:100%;height:100%;object-fit:cover;object-position:top;display:block;opacity:.92}
.ann{position:absolute;border:2px solid var(--acc);border-radius:6px;box-shadow:0 0 0 9999px rgba(0,0,0,.35)}
.ann.a1{left:12%;top:22%;width:46%;height:16%;clip-path:inset(0 100% 100% 0);transition:clip-path .9s var(--ease) .25s}
.story-vis[data-stage="1"] .ann.a1{clip-path:inset(0 0 0 0)}
.ann.a2{left:62%;top:48%;width:26px;height:26px;border-radius:50%;background:var(--acc);box-shadow:none;display:grid;place-items:center;transform:scale(0);transition:transform .5s cubic-bezier(.3,1.6,.5,1) .9s}
.ann.a2 b{font:600 12px var(--mono);color:#140a03}
.story-vis[data-stage="1"] .ann.a2{transform:scale(1)}
.sv-code{border:1px solid var(--line2);border-radius:12px;background:#0f0e0e;overflow:hidden;margin-top:30px}
.sv-code-h{display:flex;justify-content:space-between;padding:10px 14px;border-bottom:1px solid var(--line);font:11px var(--mono);color:var(--fg3);text-transform:uppercase;letter-spacing:.08em}
.sv-code .cp{display:inline-flex;align-items:center;gap:6px;color:var(--green);opacity:0;transform:translateY(4px);transition:.4s 1.1s}
.sv-code .cp i{width:6px;height:6px;border-radius:50%;background:var(--green)}
.story-vis[data-stage="2"] .cp{opacity:1;transform:none}
.sv-code pre{margin:0;padding:18px;font:13.5px/1.9 var(--mono);color:var(--fg1);background:none;border:0;white-space:pre-wrap}
.sv-code .c{color:var(--fg3)}.sv-code .p{color:var(--acc)}.sv-code .ok{color:var(--green)}
.story-prog{position:absolute;left:0;right:0;bottom:-18px;height:2px;background:var(--line)}
.story-prog i{display:block;height:100%;width:33.33%;background:var(--acc);transition:transform .6s var(--ease)}
.story-sticky:has([data-stage="1"]) .story-prog i{transform:translateX(100%)}
.story-sticky:has([data-stage="2"]) .story-prog i{transform:translateX(200%)}
.story-steps{display:flex;flex-direction:column}
.story-step{min-height:58vh;display:flex;flex-direction:column;justify-content:center;opacity:.28;transition:opacity .5s}
.story-step.on{opacity:1}
.story-step h3{margin:14px 0 14px;font-size:clamp(26px,2.6vw,36px);line-height:1.2;font-weight:600;letter-spacing:-.025em}
.story-step p:not(.hud){margin:0;max-width:440px;font-size:16px;line-height:1.8;color:var(--fg2)}
.story-step:first-child{min-height:50vh}

/* bento */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:14px}
.bx{position:relative;grid-column:span 6;padding:24px;border:1px solid var(--line);border-radius:14px;background:linear-gradient(180deg,rgba(255,240,226,.03),rgba(255,240,226,.008));overflow:hidden;transform:perspective(900px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg));transition:transform .45s var(--ease),border-color .3s,opacity .7s var(--ease)}
.bx::after{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(380px circle at var(--lx,50%) var(--ly,0%),rgba(255,138,61,.09),transparent 50%);opacity:0;transition:opacity .3s}
.bx.lit::after{opacity:1}
.bx-copy,.bx-phone{grid-column:span 5}.bx-toc,.bx-zoom{grid-column:span 7}
.bx h3{margin:10px 0 18px;font-size:20px;font-weight:600;letter-spacing:-.015em}
.bx>p:not(.hud){margin:14px 0 0;font-size:13px;color:var(--fg3)}
.demo-line{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 12px 12px 16px;border:1px solid var(--line2);border-radius:10px;background:#0f0e0e}
.demo-line code{font:13.5px var(--mono);color:var(--fg)}
.demo-line code::before{content:"$ ";color:var(--acc)}
.demo-copy{display:inline-flex;align-items:center;gap:7px;padding:7px 12px;border-radius:7px;border:1px solid var(--line2);background:rgba(255,240,226,.05);color:var(--fg);font:500 12px var(--font);cursor:pointer;transition:.2s}
.demo-copy:hover{border-color:var(--acc)}
.demo-copy.ok{background:rgba(95,211,154,.12);border-color:rgba(95,211,154,.5);color:var(--green)}
.mini-toc{position:relative;display:flex;flex-direction:column;border-left:1px solid var(--line)}
.mini-toc span{display:flex;gap:12px;padding:8px 14px;font-size:13px;color:var(--fg3);animation:mtc 7.5s infinite;animation-delay:calc(var(--i) * 1.5s)}
.mini-toc span b{font:500 11px var(--mono)}
@keyframes mtc{0%,18%{color:var(--fg)}20%,100%{color:var(--fg3)}}
.mt-hl{position:absolute;left:-1px;top:0;width:1px;height:20%;background:var(--acc);animation:mth 7.5s steps(5) infinite}
@keyframes mth{to{transform:translateY(500%)}}
.mini-shot{margin:0;border-radius:10px;overflow:hidden;border:1px solid var(--line2);height:170px;cursor:zoom-in;position:relative}
.mini-shot img{width:100%;height:100%;object-fit:cover;object-position:top;display:block;transition:transform .8s var(--ease)}
.mini-shot:hover img{transform:scale(1.06)}
.mini-shot figcaption{position:absolute;left:10px;bottom:10px;padding:4px 10px;border-radius:6px;background:rgba(10,10,11,.85);font-size:11.5px;color:var(--fg1)}
.mini-shot figcaption strong{font-weight:500}
.phone{width:180px;height:150px;margin:0 auto;border:1px solid var(--line2);border-bottom:0;border-radius:22px 22px 0 0;padding:16px 14px 0;background:#0f0e0e;overflow:hidden}
.ph-bar{display:flex;gap:6px;margin-bottom:14px;animation:phb 6s ease-in-out infinite alternate}
.ph-bar span{flex:none;padding:3px 9px;border-radius:99px;border:1px solid var(--line2);font:500 10px var(--mono);color:var(--fg3)}
.ph-bar span:nth-child(3){border-color:var(--acc);color:var(--acc)}
@keyframes phb{to{transform:translateX(-120px)}}

/* closing cta */
.cta3{position:relative;margin:130px 0 0;border:1px solid var(--line2);border-radius:20px;overflow:hidden;min-height:420px;display:grid;place-items:center;text-align:center}
.cta3::after{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at center,rgba(10,10,11,.75),rgba(10,10,11,.2) 70%);pointer-events:none}
.cta3-in{position:relative;z-index:2;padding:60px 24px}
.cta3 h2{margin:18px 0 30px;font-size:clamp(34px,5vw,68px);line-height:1.08;font-weight:600;letter-spacing:-.04em;font-family:var(--font)}
.cta3 .cta-btns{display:flex;justify-content:center;flex-wrap:wrap;gap:12px}

/* footer */
.footer{margin-top:120px;border-top:1px solid var(--line)}
.wordmark{margin:40px 0 0;font-size:clamp(90px,19vw,290px);line-height:.9;font-weight:700;letter-spacing:-.04em;text-align:center;color:transparent;-webkit-text-stroke:1px rgba(255,240,226,.12);user-select:none;background:linear-gradient(180deg,rgba(255,138,61,.10),transparent 70%);-webkit-background-clip:text;background-clip:text}
.footer-bar .mono-s{font:500 10.5px var(--mono);letter-spacing:.1em;color:var(--fg3)}

/* guide hero */
.g-hero{position:relative;overflow:hidden;margin-top:calc(var(--header) * -1);padding-top:calc(var(--header) + 36px)!important;border-bottom:1px solid var(--line)}
.g-hero>.wrap{position:relative;z-index:2}
.g-hero-mask{position:absolute;inset:0;pointer-events:none;background:linear-gradient(90deg,rgba(10,10,11,.95) 0%,rgba(10,10,11,.7) 45%,rgba(10,10,11,.35) 100%),linear-gradient(0deg,var(--bg) 0%,transparent 40%),repeating-linear-gradient(90deg,rgba(255,240,226,.03) 0 1px,transparent 1px 88px),repeating-linear-gradient(0deg,rgba(255,240,226,.03) 0 1px,transparent 1px 88px)}
.g-hero h1{font-weight:600!important;letter-spacing:-.035em!important}
.g-hero .hud{margin-bottom:4px}
.g-fig{position:relative;border:1px solid var(--line2)!important;border-radius:14px!important;background:rgba(12,12,13,.75)!important;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);padding:0!important;overflow:visible!important;transform:perspective(1100px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg));transition:transform .5s var(--ease)}
.gf-top,.gf-bot{display:flex;justify-content:space-between;padding:12px 16px;font:500 10.5px var(--mono);letter-spacing:.1em;color:var(--fg3);text-transform:uppercase}
.gf-top{border-bottom:1px solid var(--line)}.gf-bot{border-top:1px solid var(--line)}
.live-dot{display:inline-flex;align-items:center;gap:6px;color:var(--acc)}
.live-dot::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--acc);animation:blink 1.4s steps(1) infinite}
.g-fig .cover{aspect-ratio:16/10;margin:0!important;border:0!important;background:none!important;border-radius:0!important}
.tk{position:absolute;width:10px;height:10px;border-color:var(--acc);border-style:solid;border-width:0;opacity:.8}
.tk.t1{left:-5px;top:-5px;border-left-width:1px;border-top-width:1px}.tk.t2{right:-5px;top:-5px;border-right-width:1px;border-top-width:1px}.tk.t3{left:-5px;bottom:-5px;border-left-width:1px;border-bottom-width:1px}.tk.t4{right:-5px;bottom:-5px;border-right-width:1px;border-bottom-width:1px}
.meta span b{color:var(--acc)}
.kicker{color:var(--acc)!important;font-family:var(--mono)!important;letter-spacing:.08em}
.step-head h2{font-weight:600!important;letter-spacing:-.025em}
.side-nav a.on{color:var(--fg)}
.side-nav a.on::before{background:var(--acc)!important}
.side-nav a.on .n{color:var(--acc)!important}
.side-bar i{background:var(--acc)!important}
.side-count .cur{color:var(--acc)}
.prose a:not(.btn):not(.chip-link){text-decoration-color:rgba(255,138,61,.5)}
.vc-adv .adv-ic{color:var(--acc)}
.tool-card{transform:perspective(900px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg));transition:transform .45s var(--ease),border-color .3s}
.pager a:hover{border-color:rgba(255,138,61,.45)}

/* responsive */
@media (max-width:1240px){.idx3{grid-template-columns:repeat(3,minmax(0,1fr))}.idx3 .card:last-child{grid-column:span 2}.idx3 .card:last-child .cover{aspect-ratio:2/0.92}}
@media (max-width:980px){
  .sys{display:none}
  .hero3{min-height:0;padding:calc(var(--header) + 40px) 0 28px}
  .hero3-in{grid-template-columns:1fr;gap:40px}
  .term{transform:none}.term-body{height:290px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .sec{padding-top:88px}
  .sec-head3{grid-template-columns:1fr}.sec-head3 p:not(.hud){justify-self:start}
  .idx3{grid-template-columns:repeat(2,minmax(0,1fr))}.idx3 .card:last-child{grid-column:auto}.idx3 .card:last-child .cover{aspect-ratio:1/0.92}
  .story-in{grid-template-columns:1fr;gap:0}
  .story-sticky{top:calc(var(--header) + 10px);height:330px;z-index:3}
  .story-vis{background:#0d0d0e}
  .sv{padding:18px}.sv0{grid-template-columns:1fr}.sv-toc{display:none}
  .story-step{min-height:46vh}.story-step:first-child{min-height:40vh}
  .bx,.bx-copy,.bx-phone,.bx-toc,.bx-zoom{grid-column:span 12}
  .g-fig{transform:none}
}
@media (max-width:640px){
  .hero3 h1{font-size:clamp(34px,10vw,46px)}
  .hero3 .hero-lead{font-size:15.5px}
  .hero3-foot .hide-s{display:none}
  .term{font-size:12px}.term-body{height:270px;padding:14px}
  .tl .ls .r{display:none}
  .stat{padding:24px 18px}
  .idx3{grid-template-columns:1fr}.idx3 .card:last-child{grid-column:auto}
  .idx3 .card .cover,.idx3 .card:last-child .cover{aspect-ratio:16/10}
  .cta3{margin-top:90px;min-height:340px}
  .wordmark{-webkit-text-stroke-width:.6px}
}
@media (prefers-reduced-motion:reduce){.mq-track,.mini-toc span,.mt-hl,.ph-bar,.pulse,.caret,.live-dot::before{animation:none!important}.term,.idx3 .card,.bx,.g-fig{transform:none!important}}
@media (hover:none){.term{transform:none}}

.faq-item summary{padding:16px 18px}.faq-item .prose{padding:0 18px 18px}

/* new-tools guide */
.nt-h{margin:30px 0 12px;font-size:17px;font-weight:600;color:var(--fg)}
.nt-k{margin:26px 0 10px;font:500 11px var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--fg3)}
.nt-fine{font-size:12.5px;color:var(--fg3);line-height:1.7;margin:10px 0 0}
.nt-tw{margin:18px 0 0;border:1px solid var(--line);border-radius:12px;overflow-x:auto;-webkit-overflow-scrolling:touch;background:var(--bg1);max-width:100%}
.prose .nt-tw table.nt-table,.nt-table{display:table;width:100%;min-width:860px;border-collapse:collapse;margin:0;font-size:13px;line-height:1.55;border:0}
.nt-table th,.nt-table td{padding:11px 12px;text-align:left;vertical-align:top;border:0;border-bottom:1px solid var(--line);color:var(--fg1);background:none}
.nt-table thead th{font:500 10.5px var(--mono);letter-spacing:.08em;color:var(--fg3);text-transform:uppercase;background:var(--bg2);white-space:nowrap}
.nt-table tbody th{min-width:112px}
.nt-table tbody th b{display:block;color:var(--fg);font-size:14px;font-weight:600}
.nt-table tbody th small{display:block;margin-top:2px;font:400 11px var(--mono);color:var(--fg3)}
.nt-table tbody th a{color:var(--fg);text-decoration:none;border-bottom:1px dashed var(--line2)}
.nt-table tbody tr:hover td,.nt-table tbody tr:hover th{background:rgba(255,240,226,.02)}
.nt-table .nt-sep td{padding:9px 12px;font:500 10.5px var(--mono);letter-spacing:.1em;color:var(--acc2);background:var(--bg2)}
.nt-table .nt-base td,.nt-table .nt-base th{opacity:.82}
.nt-table tr:last-child td,.nt-table tr:last-child th{border-bottom:0}
.nt-g,.nt-r{display:inline-block;margin:0 6px 2px 0;padding:1px 7px;border-radius:999px;font-size:11px;font-weight:600}
.nt-g{color:var(--green);background:rgba(95,211,154,.1);border:1px solid rgba(95,211,154,.25)}
.nt-r{color:var(--acc2);background:rgba(255,138,61,.08);border:1px solid rgba(255,138,61,.25)}
.nt-pick{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.nt-pick>div{padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:var(--bg1)}
.nt-pick b{display:block;color:var(--fg);font-size:14px;margin-bottom:4px}
.nt-pick p{margin:0;font-size:13.5px;color:var(--fg2)}
.nt-kv{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;margin:18px 0;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--line)}
.nt-kv>div{padding:12px 14px;background:var(--bg1);min-width:0}
.nt-kv dt{font:500 10.5px var(--mono);letter-spacing:.1em;color:var(--fg3);text-transform:uppercase;margin:0 0 4px}
.nt-kv dd{margin:0;font-size:13.5px;color:var(--fg1);overflow-wrap:anywhere}
.nt-shot{margin:20px 0;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--bg1)}
.nt-shot .zoomable{display:block;cursor:zoom-in;background:#fff}
.nt-shot img{display:block;width:100%;height:auto;margin:0;border:0;border-radius:0}
.nt-shot figcaption{padding:11px 14px;border-top:1px solid var(--line);font-size:13px;line-height:1.6;color:var(--fg2)}
.nt-shot figcaption strong{display:block;color:var(--fg);font-size:13.5px;margin-bottom:2px}
.nt-steps{list-style:none;counter-reset:nt;margin:18px 0;padding:0}
.nt-steps li{counter-increment:nt;position:relative;padding:0 0 14px 40px;margin:0}
.nt-steps li::before{content:counter(nt);position:absolute;left:0;top:0;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;font:600 12px var(--mono);color:#140a03;background:var(--acc)}
.nt-steps li:not(:last-child)::after{content:"";position:absolute;left:12.5px;top:30px;bottom:2px;width:1px;background:var(--line2)}
.nt-steps h3{margin:2px 0 4px;font-size:15px;color:var(--fg)}
.nt-steps p{margin:0;font-size:14px;color:var(--fg2)}
.nt-pt{margin:16px 0;border:1px solid var(--line);border-radius:12px;background:var(--bg1);overflow:hidden}
.nt-pt-h{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;padding:10px 14px;border-bottom:1px solid var(--line);font-size:13.5px}
.nt-pt-no{font:500 10.5px var(--mono);letter-spacing:.1em;color:var(--acc)}
.nt-pt-h b{color:var(--fg)}
.nt-pt-h em{margin-left:auto;font-style:normal;font-size:12px;color:var(--fg3)}
.nt-pt pre{margin:0;border:0;border-radius:0;white-space:pre-wrap;overflow-wrap:anywhere}
.nt-nocap{display:flex;gap:10px;align-items:flex-start;margin:16px 0;padding:11px 14px;border:1px dashed var(--line2);border-radius:10px;font-size:13.5px;color:var(--fg2)}
.nt-nocap span{flex:none;padding:1px 7px;border-radius:5px;font:500 10.5px var(--mono);letter-spacing:.06em;color:var(--fg3);border:1px solid var(--line2)}
.nt-vc{display:inline-flex;align-items:center;gap:4px;margin-left:6px;font-size:13px;color:var(--fg2)!important;text-decoration:none!important;border-bottom:1px dotted var(--line2)}
.nt-vc:hover{color:var(--acc2)!important}
.nt-vc .icon{width:12px;height:12px}
.nt-tips{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:6px 0 18px}
.nt-tip{padding:16px;border:1px solid var(--line);border-radius:12px;background:var(--bg1)}
.nt-tip b{font:500 11px var(--mono);color:var(--acc)}
.nt-tip h3{margin:6px 0 4px;font-size:15px;color:var(--fg)}
.nt-tip p{margin:0;font-size:13.5px;color:var(--fg2)}
.nt-src{margin:40px 0 10px;padding:22px;border:1px solid var(--line);border-radius:14px;background:var(--bg1)}
.nt-src h2{margin:6px 0 8px;font-size:20px}
.nt-src>p{font-size:13.5px;color:var(--fg2)}
.nt-src ol{margin:14px 0 0;padding:0;list-style:none;counter-reset:s}
.nt-src li{counter-increment:s;display:grid;grid-template-columns:28px minmax(0,1fr);gap:0 10px;padding:8px 0;border-top:1px solid var(--line);font-size:13px}
.nt-src li::before{content:counter(s,decimal-leading-zero);grid-row:span 2;font:500 11px var(--mono);color:var(--fg3);padding-top:2px}
.nt-src li span{color:var(--fg1)}
.nt-src li a{font:400 12px var(--mono);color:var(--fg2);overflow-wrap:anywhere;text-decoration:none}
.nt-src li a:hover{color:var(--acc2)}
@media (max-width:640px){.nt-pick,.nt-kv,.nt-tips{grid-template-columns:1fr}.nt-src{padding:16px}.nt-pt-h em{margin-left:0;width:100%}}
/* home grid: 11 cards */
.idx3{grid-template-columns:repeat(4,minmax(0,1fr))}
.idx3 .card:last-child{grid-column:span 2}.idx3 .card:last-child .cover{aspect-ratio:2/0.92}
@media (max-width:1240px){.idx3{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (max-width:980px){.idx3{grid-template-columns:repeat(2,minmax(0,1fr))}.idx3 .card:last-child{grid-column:span 2}.idx3 .card:last-child .cover{aspect-ratio:2/0.92}}
@media (max-width:640px){.idx3{grid-template-columns:1fr}.idx3 .card:last-child{grid-column:auto}.idx3 .card:last-child .cover{aspect-ratio:16/10}}
.nt-guide .g-grid h1{word-break:keep-all;overflow-wrap:break-word}
/* account guides */
.ac-verdict{margin:20px 0;padding:18px 20px;border:1px solid rgba(255,138,61,.45);border-left:3px solid var(--acc,#ff8a3d);border-radius:12px;background:rgba(255,138,61,.05)}
.ac-verdict .ac-v-k{margin:0 0 6px;font:500 10.5px var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--acc2,#ff8a3d)}
.ac-verdict>b{display:block;font-size:16.5px;line-height:1.5;color:var(--fg);font-weight:600}
.ac-verdict ul{margin:12px 0 0;padding-left:1.1em}.ac-verdict li{margin:6px 0;color:var(--fg1);line-height:1.7}
/* 13-card index: last card fills the final row */
.idx3 .card:last-child{grid-column:1/-1}.idx3 .card:last-child .cover{aspect-ratio:4.4/0.92}
@media (max-width:1240px){.idx3 .card:last-child{grid-column:1/-1}.idx3 .card:last-child .cover{aspect-ratio:3.3/0.92}}
@media (max-width:980px){.idx3 .card:last-child{grid-column:1/-1}.idx3 .card:last-child .cover{aspect-ratio:2.2/0.92}}
@media (max-width:640px){.idx3 .card:last-child .cover{aspect-ratio:1/0.92}}
.nt-pick.n3{grid-template-columns:repeat(3,minmax(0,1fr))}
.nt-kv>div:last-child:nth-child(odd){grid-column:1/-1}
@media (max-width:640px){.nt-pick.n3{grid-template-columns:1fr}}