:root{--bg: #07080b;--bg-1: #0c0e13;--panel: #11141a;--panel-2: #171b23;--line: rgba(255, 255, 255, .09);--line-2: rgba(255, 255, 255, .17);--tx: #eef0f4;--tx-2: #aab0be;--tx-3: #868d9c;--volt: #c8ff2e;--volt-soft: rgba(200, 255, 46, .14);--volt-ink: #0a1200;--paper: #f3f1ea;--paper-2: #e6e3d9;--paper-ink: #1b1d22;--ink: #0b0d10;--sans: "Inter", ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;--mono: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Mono", Menlo, Consolas, "Liberation Mono", monospace;--r-lg: 28px;--r-md: 18px;--ease: cubic-bezier(.2, .7, .2, 1);--wrap: 1180px}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:88px;-webkit-text-size-adjust:100%;overflow-x:clip}body{margin:0;background:var(--bg);color:var(--tx);font-family:var(--sans);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden;overflow-x:clip}body:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;z-index:-1;pointer-events:none;background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:64px 64px;-webkit-mask-image:radial-gradient(ellipse 90% 60% at 50% 0%,#000 20%,transparent 75%);mask-image:radial-gradient(ellipse 90% 60% at 50% 0%,#000 20%,transparent 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.2s,border-color .2s}.btn:active{transform:scale(.97)}.btn-lg{height:54px;padding:0 28px;font-size:16px}.btn-sm{height:38px;padding:0 18px;font-size:14px}.btn-volt{background:var(--volt);color:var(--volt-ink)}.btn-volt:hover{box-shadow:0 0 0 6px var(--volt-soft),0 10px 40px #c8ff2e47}.btn-ghost{border-color:var(--line-2);color:var(--tx);background:#ffffff08}.btn-ghost:hover{border-color:#fff6;background:#ffffff12}.link-btn{display:inline-flex;align-items:center;gap:8px;margin-top:8px;color:var(--volt);font-weight:600;font-size:15px;border-bottom:1px solid transparent}.link-btn:hover{border-bottom-color:var(--volt)}.link-btn .ic{transition:transform .2s var(--ease)}.link-btn:hover .ic{transform:translate(4px)}.link-plain{color:var(--tx-2)}.link-plain:hover{color:var(--tx)}.x{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;color:var(--tx-2);border:1px solid var(--line)}.x:hover{color:var(--tx);border-color:var(--line-2)}.nav{position:fixed;z-index:50;top:14px;left:50%;transform:translate(-50%);width:min(880px,calc(100% - 24px));height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 10px 0 18px;border-radius:999px;background:#0e1016b8;border:1px solid var(--line);-webkit-backdrop-filter:blur(18px) saturate(1.4);backdrop-filter:blur(18px) saturate(1.4)}.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.01em}.brand img{border-radius:8px}.nav-links{display:flex;gap:4px}.nav-links a{padding:6px 14px;border-radius:999px;color:var(--tx-2);font-size:14px;font-weight:500;transition:color .2s,background .2s}.nav-links a:hover{color:var(--tx);background:#ffffff12}.nav-actions{display:flex;align-items:center;gap:8px}.nav-toggle{display:none;width:38px;height:38px;position:relative;border-radius:50%;border:1px solid var(--line)}.nav-toggle 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var(--line);border-radius:999px;background:#ffffff08}.pulse{width:7px;height:7px;border-radius:50%;background:var(--volt);animation:pulse 2s infinite}@keyframes pulse{0%{box-shadow:0 0 #c8ff2e99}70%,to{box-shadow:0 0 0 9px #c8ff2e00}}h1{margin-top:26px;font-size:clamp(42px,8vw,96px);line-height:1.08;font-weight:800;letter-spacing:-.04em}.mark{display:inline-block;color:var(--volt-ink);background:var(--volt);padding:0 .14em;margin:0 .02em;border-radius:.14em;transform:rotate(-1.2deg);box-shadow:0 0 60px #c8ff2e59}.lede{margin-top:28px;max-width:620px;color:var(--tx-2);font-size:clamp(16px,2vw,19px);line-height:1.85}.cta-row{margin-top:36px;display:flex;flex-wrap:wrap;gap:12px;justify-content:center}.hero-note{margin-top:18px;font-size:13.5px;color:var(--tx-3)}.stage{position:relative;margin-top:56px;padding:44px 18px 18px;border:1px solid var(--line-2);border-radius:var(--r-lg);background:radial-gradient(ellipse 60% 50% at 20% 0%,rgba(200,255,46,.06),transparent 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rgba(200,255,46,.9))}.paper-body{position:relative;padding:14px 16px 18px;overflow:hidden}.scanline{position:absolute;left:0;right:0;top:-90px;height:90px;z-index:4;pointer-events:none;opacity:0;background:linear-gradient(180deg,transparent,rgba(200,255,46,.55));border-bottom:2px solid var(--volt)}.stage[data-stage=scan] .scanline{animation:sweep .95s cubic-bezier(.45,0,.3,1) forwards}@keyframes sweep{0%{opacity:1;top:-90px}to{opacity:1;top:100%}}.q{position:relative;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:16px;padding:18px 18px 16px;margin:10px 0;border-radius:6px;transition:background .4s}.q:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;opacity:0;transform:scale(1.025);transition:opacity .35s,transform .45s var(--ease);--c: var(--ink);background:linear-gradient(var(--c),var(--c)) top left / 16px 2.5px no-repeat,linear-gradient(var(--c),var(--c)) top left / 2.5px 16px no-repeat,linear-gradient(var(--c),var(--c)) top right / 16px 2.5px no-repeat,linear-gradient(var(--c),var(--c)) top right / 2.5px 16px no-repeat,linear-gradient(var(--c),var(--c)) bottom left / 16px 2.5px no-repeat,linear-gradient(var(--c),var(--c)) bottom left / 2.5px 16px no-repeat,linear-gradient(var(--c),var(--c)) bottom right / 16px 2.5px no-repeat,linear-gradient(var(--c),var(--c)) bottom right / 2.5px 16px no-repeat}.q.has-frame{background:#c8ff2e33}.q.has-frame:after{opacity:1;transform:none}.q-label{position:absolute;left:12px;top:-9px;z-index:2;padding:1px 7px;border-radius:4px;font:700 10.5px var(--mono);background:var(--ink);color:var(--volt);opacity:0;transform:translateY(4px);transition:opacity .3s .1s,transform .3s .1s}.q.has-frame .q-label{opacity:1;transform:none}.q-stem{font-size:15px;line-height:1.7;font-weight:600}.q-stem b{font-family:var(--mono);margin-right:4px;color:#6a6d76}.opts{margin-top:8px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:2px 18px;font-size:14px;color:#3d4048;counter-reset:o}.opts li{counter-increment:o;padding:1px 6px;border-radius:4px;transition:background .3s,color .3s}.opts li:before{content:counter(o,upper-alpha) ". ";font-family:var(--mono);color:#8a8d95}.opts li.is-answer{background:var(--ink);color:#fff;font-weight:600}.opts li.is-answer:before{color:var(--volt)}.tag{position:relative;min-width:128px;height:46px;display:grid;place-items:center;padding:0 14px;border-radius:12px;background:var(--ink);color:#fff;border:1.5px solid var(--volt);box-shadow:0 8px 22px #00000059,0 0 22px #c8ff2e40;transition:opacity .3s,transform .4s var(--ease),box-shadow .2s}.tag[data-state=pending]{opacity:0;transform:translate(14px) scale(.92);pointer-events:none}.tag[data-state=thinking],.tag[data-state=done]{opacity:1;transform:none}.tag>span{grid-area:1 / 1;display:flex;align-items:center;gap:8px;transition:opacity .2s}.tag[data-state=thinking]{cursor:progress}.tag[data-state=thinking] .t-done,.tag[data-state=pending] .t-done,.tag[data-state=done] .t-think{opacity:0}.tag[data-state=done]:hover{transform:translate(-3px);box-shadow:0 10px 26px #0006,0 0 32px #c8ff2e73}.tag[aria-expanded=true]{background:var(--volt);color:var(--volt-ink)}.tag[aria-expanded=true] strong{color:var(--volt-ink)}.t-think i{width:6px;height:6px;border-radius:50%;background:var(--volt);animation:blink 1s infinite}.t-think i:nth-child(2){animation-delay:.15s}.t-think i:nth-child(3){animation-delay:.3s}@keyframes blink{0%,80%,to{opacity:.2;transform:scale(.8)}40%{opacity:1;transform:scale(1.1)}}.t-done strong{font-size:22px;line-height:1;color:var(--volt);font-weight:800}.t-done em{font-style:normal;font-size:13px;font-weight:600}.t-done .ic{width:15px;height:15px;opacity:.7}.console{display:flex;flex-direction:column;gap:12px;padding:14px;min-width:0;border:1px solid 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#ffffff1a}.hotkey-text{display:flex;flex-direction:column;line-height:1.35}.hotkey-text strong{font-size:15px}.hotkey-text small{color:var(--tx-3);font-size:12.5px}.k-main{transition:transform .12s,box-shadow .12s,color .12s,border-color .12s}.stage[data-stage=press] .k-main,.k-main.is-down{transform:translateY(3px);box-shadow:0 0 #05060a,0 0 22px #c8ff2e99;border-color:var(--volt);color:var(--volt)}.explain{flex:1;min-height:190px;display:flex}.explain-empty{flex:1;display:flex;flex-direction:column;gap:6px;justify-content:center;padding:16px;border:1px dashed var(--line-2);border-radius:12px;color:var(--tx-3);font-size:13.5px;line-height:1.8}.tip-label{font-size:12px;font-weight:700;color:var(--volt)}.explain-empty kbd{min-width:0;padding:1px 7px;font-size:11.5px;border-radius:6px;box-shadow:0 2px #05060a}.explain-card{flex:1;padding:14px;border-radius:12px;border:1px solid rgba(200,255,46,.5);background:linear-gradient(180deg,#c8ff2e1a,#c8ff2e05);animation:cardIn .4s var(--ease)}.explain-card[hidden],.explain-empty[hidden]{display:none}@keyframes cardIn{0%{opacity:0;transform:translateY(10px)}}.explain-top{display:flex;justify-content:space-between;align-items:center;font-size:13px;font-weight:600;color:var(--volt)}.explain-top .x{width:26px;height:26px}.explain-top .x .ic{width:13px;height:13px}.explain-ans{display:flex;align-items:baseline;gap:10px;margin:8px 0 6px}.explain-ans span{font-size:12.5px;color:var(--tx-3)}.explain-ans strong{font-size:28px;line-height:1.1;color:var(--volt);font-weight:800}#explain-text{font-size:14px;color:var(--tx-2);line-height:1.8}.section{padding:130px 0 0}.section-head{max-width:760px;margin-bottom:52px}.section-head p:last-child:not(.eyebrow){margin-top:18px;color:var(--tx-2);font-size:17px;max-width:560px}.eyebrow{font-size:14px;font-weight:700;color:var(--volt);margin-bottom:18px}.eyebrow:before{content:"";display:inline-block;width:22px;height:2px;background:var(--volt);vertical-align:middle;margin-right:12px}h2{font-size:clamp(34px,5.2vw,60px);line-height:1.14;font-weight:800;letter-spacing:-.035em}h3{font-size:20px;line-height:1.4;letter-spacing:-.01em}.pain{display:grid;grid-template-columns:1fr 1.1fr;gap:48px 72px;align-items:center}.pain-list li{display:flex;gap:22px;align-items:baseline;padding:26px 0;border-top:1px solid var(--line)}.pain-list li:last-child{border-bottom:1px solid var(--line)}.pain-list span{font:700 14px var(--mono);color:var(--tx-3)}.pain-list p{font-size:clamp(18px,2.2vw,22px);font-weight:600;letter-spacing:-.01em;line-height:1.55}.pain-turn{grid-column:1 / -1;margin-top:8px;font-size:clamp(26px,4vw,44px);font-weight:800;letter-spacing:-.03em;text-align:center}.values{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.value{padding:20px 20px 32px;border:1px solid var(--line);border-radius:var(--r-md);background:linear-gradient(180deg,var(--panel),var(--bg-1));transition:border-color .3s,transform .3s var(--ease)}.value:hover{border-color:#c8ff2e66;transform:translateY(-4px)}.value h3{margin-top:26px;font-size:24px}.value p{margin-top:10px;color:var(--tx-2);font-size:15.5px;line-height:1.85;max-width:460px}.value-viz{height:176px;border-radius:12px;background:#0a0c10;border:1px solid var(--line);position:relative;overflow:hidden}.viz-rows{padding:22px 24px;display:flex;flex-direction:column;gap:14px;justify-content:center}.viz-rows .row{display:grid;grid-template-columns:52px 1fr 40px;align-items:center;gap:14px}.viz-rows span{font-size:12.5px;color:var(--tx-3)}.viz-rows i{height:7px;border-radius:4px;background:#1d212b;position:relative;overflow:hidden}.viz-rows i:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:var(--volt);transform-origin:left;animation:fill 3.6s var(--ease) infinite}.viz-rows .row:nth-child(2) i:after{animation-delay:.25s}.viz-rows .row:nth-child(3) i:after{animation-delay:.5s}@keyframes fill{0%{transform:scaleX(0)}35%,85%{transform:scaleX(1)}to{transform:scaleX(1);opacity:.25}}.viz-rows b{height:28px;display:grid;place-items:center;border-radius:8px;background:var(--ink);border:1.5px solid var(--volt);color:var(--volt);font-size:14px}.viz-beside{padding:26px 28px;display:flex;flex-direction:column;gap:14px;justify-content:center;background:var(--paper);border-color:transparent}.ln{height:8px;border-radius:4px;background:#cfccc0}.ln.s{width:58%}.ln-hl{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 10px;border-radius:5px;background:#c8ff2e4d;outline:2px solid var(--ink);outline-offset:-2px}.ln-hl span{flex:1;height:8px;border-radius:4px;background:#9b988b;max-width:70%}.ln-hl b{display:grid;place-items:center;min-width:34px;height:26px;padding:0 6px;border-radius:8px;background:var(--ink);border:1.5px solid var(--volt);color:var(--volt);font-size:13px}.viz-explain{display:grid;place-items:center;padding:18px}.mini-card{width:100%;max-width:380px;padding:16px;border-radius:12px;border:1px solid rgba(200,255,46,.45);background:var(--volt-soft)}.mini-card span{font-size:12.5px;font-weight:700;color:var(--volt)}.mini-card p{margin-top:6px;font-size:14px;color:var(--tx);line-height:1.7}.viz-key{display:flex;align-items:center;justify-content:center;gap:16px}.viz-key kbd{min-width:0;padding:12px 20px;font-size:16px;border-color:var(--volt);color:var(--volt)}.viz-key span{font-size:14px;color:var(--tx-3)}html:not(.is-mac) .viz-key [data-mac],html.is-mac .viz-key [data-win]{display:none}.scene-cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.sc{padding:26px 22px 30px;border-radius:var(--r-md);border:1px solid var(--line);background:linear-gradient(180deg,var(--panel),var(--bg-1));transition:border-color .3s}.sc:hover{border-color:var(--line-2)}.sc span{font:700 13px var(--mono);color:var(--volt)}.sc h3{margin-top:32px}.sc p{margin-top:10px;color:var(--tx-3);font-size:14.5px;line-height:1.8}.out-layout{display:grid;grid-template-columns:300px minmax(0,1fr);gap:20px;align-items:stretch}.out-list{display:flex;flex-direction:column;gap:10px}.out-card{position:relative;text-align:left;padding:18px 56px 16px 20px;border-radius:var(--r-md);border:1px solid var(--line);background:var(--panel);transition:border-color .25s,background .25s,transform .2s var(--ease)}.out-card:hover{border-color:var(--line-2)}.out-card:active{transform:scale(.99)}.out-card strong{display:block;font-size:18px}.out-card 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