:root{color-scheme:light;--paper: oklch(.977 .003 90);--line: oklch(.895 .004 90);--line-strong: oklch(.82 .005 90);--ink: oklch(.185 .012 260);--ink-2: oklch(.34 .01 260);--ink-3: oklch(.48 .008 260);--ink-4: oklch(.62 .006 260);--red: oklch(.62 .24 25);--red-deep: oklch(.55 .22 25);--night: oklch(.165 .014 265);--night-2: oklch(.215 .016 265);--night-line: oklch(.32 .018 265);--night-tx: oklch(.97 .004 265);--night-tx-2: oklch(.8 .01 265);--night-tx-3: oklch(.63 .012 265);--data: oklch(.52 .14 250);--maxw: 1180px;--gutter: clamp(20px, 4.5vw, 48px);--font: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;--mono: "SF Mono", ui-monospace, "Cascadia Code", Menlo, Consolas, monospace;--ease: cubic-bezier(.22, 1, .36, 1);--fs-hero: clamp(40px, 7.6vw, 96px);--fs-h2: clamp(28px, 4vw, 52px);--fs-h3: clamp(17px, 1.5vw, 20px);--fs-body: clamp(15px, 1.05vw, 16.5px);--fs-sm: 13.5px;--fs-label: 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.marquee-track{animation-play-state:paused}.marquee-track>span{display:inline-flex;align-items:center;gap:30px;padding-right:30px;font-size:12px;font-weight:800;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-3);white-space:nowrap}.mq-dot{width:5px;height:5px;border-radius:50%;background:var(--red);display:inline-block;flex-shrink:0}@keyframes marquee{0%{transform:translateZ(0)}to{transform:translate3d(-33.3333%,0,0)}}.caret{display:inline-block;width:2px;height:1em;margin-left:2px;vertical-align:-.12em;background:currentColor;animation:caretBlink .9s steps(1,end) infinite}@keyframes caretBlink{0%,49%{opacity:1}50%,to{opacity:0}}.line-in{animation:lineIn .5s var(--ease) backwards}@keyframes lineIn{0%{opacity:0;transform:translate(-8px)}to{opacity:1;transform:none}}.sum-in{animation:sumIn .6s var(--ease) backwards}@keyframes sumIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}.sum-h{position:relative;display:inline-block}.sum-in 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i{width:2px;height:26%;border-radius:1px;background:oklch(.72 .2 25);animation:bar .88s ease-in-out infinite}.demo-badge{margin-left:auto;font-size:11px;font-weight:700;color:#87db94;border:1px solid oklch(.82 .13 148 / .35);border-radius:999px;padding:3px 10px;white-space:nowrap}.demo-body{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,1fr);min-height:300px}.demo-pane{padding:18px 20px;min-width:0}.demo-pane-sum{border-left:1px solid var(--night-line)}.demo-label{font-size:10.5px;font-weight:800;letter-spacing:.18em;text-transform:uppercase;color:var(--night-tx-3);margin-bottom:14px;display:flex;align-items:center;gap:8px}.demo-label:after{content:"";height:1px;flex:1;background:linear-gradient(90deg,var(--night-line),transparent)}.demo-scroll{max-height:232px;overflow:hidden;display:grid;gap:12px;align-content:start;scroll-behavior:smooth}.demo-line{display:grid;grid-template-columns:auto minmax(0,1fr);gap:10px;align-items:baseline;font-size:13px;line-height:1.6}.demo-line.in{animation:demoIn .42s var(--ease) backwards}@keyframes demoIn{0%{opacity:0;transform:translate(-6px)}to{opacity:1;transform:none}}.demo-spk{font-size:10px;font-weight:800;padding:1.5px 7px;border-radius:4px;white-space:nowrap}.demo-spk.s1{color:#4ac9ec;background:#4ac9ec29}.demo-spk.s2{color:#f4c352;background:#f4c35229}.demo-text{color:var(--night-tx-2)}.demo-done{margin-top:6px;font-size:11.5px;font-weight:700;color:#87db94;animation:demoIn .5s var(--ease) backwards}.demo-sum{display:grid;gap:15px;align-content:start}.demo-sum-block{animation:demoIn .5s var(--ease) backwards}.demo-sum-h{font-size:10.5px;font-weight:900;letter-spacing:.14em;color:oklch(.75 .17 25);margin-bottom:6px}.demo-sum-line{font-size:12.5px;line-height:1.65;color:var(--night-tx-2);animation:demoIn .45s var(--ease) backwards}.demo-idle{font-size:12px;color:var(--night-tx-3);font-style:italic}@keyframes 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var(--ease)}.prob:hover{background:var(--paper-hover);padding-left:10px}.prob:hover .prob-n{transition:color .3s var(--ease);color:var(--red)}.prob-n{transition:color .3s var(--ease);font-family:var(--mono);font-size:clamp(30px,3.2vw,44px);font-weight:700;color:var(--line-strong);line-height:1;letter-spacing:-.04em}.prob-t{font-size:clamp(19px,1.7vw,23px);font-weight:900;color:var(--ink);letter-spacing:-.03em;line-height:1.3}.prob-b{font-size:var(--fs-sm);color:var(--ink-3);line-height:1.75}.steps{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;border-top:2px solid var(--ink)}.step{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.82fr);gap:22px;padding:34px 32px 34px 0;border-bottom:1px solid var(--line);align-items:start}.step:nth-child(odd){border-right:1px solid 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var(--line-strong);background:#fff;color:var(--ink-2)}.chip.ghost{color:var(--ink-4);border-style:dashed;background:transparent}.table-wrap{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);overflow-x:auto}.cmp{width:100%;border-collapse:collapse;min-width:560px}.cmp th,.cmp td{text-align:left;font-size:var(--fs-sm);font-weight:400;vertical-align:baseline;padding:15px 24px}.cmp th:first-child,.cmp td:first-child{padding-left:28px}.cmp th:last-child,.cmp td:last-child{padding-right:28px}.cmp thead th{background:#fff;font-size:10.5px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-4);border-bottom:1px solid var(--line);padding-top:18px;padding-bottom:18px}.cmp thead th.pro-col{color:var(--ink)}.cmp tbody tr{border-bottom:1px solid var(--line)}.cmp tbody tr:last-child{border-bottom:0}.cmp tbody th{font-weight:500;color:var(--ink);width:42%}.cmp td{color:var(--ink-4)}.cmp td.pro-col{color:var(--ink-2)}.cmp tr.pro-only th{font-weight:600}.cmp tr.pro-only td.pro-col{color:var(--ink);font-weight:600}.cmp tr.pro-only td.pro-col:before{content:"";display:inline-block;width:6px;height:6px;margin-right:8px;border-radius:50%;background:var(--red);vertical-align:1px}.pro-col{background:#fff}.yes,.no{color:inherit;font-weight:inherit}.table-note{display:flex;gap:10px;margin-top:20px;padding-left:14px;border-left:2px solid var(--line-strong);font-size:12px;line-height:1.65;color:var(--ink-4);max-width:68ch}.ints{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.int{position:relative;min-width:0;background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px;display:flex;flex-direction:column;transition:transform .2s var(--ease),box-shadow .2s var(--ease)}.int:hover{transform:translateY(-3px);box-shadow:0 24px 48px -32px #00000059}.int h3{font-size:18px;letter-spacing:-.02em}.int-b{margin-top:9px;font-size:13px;color:var(--ink-3);line-height:1.68;flex:1}.code{margin-top:18px;background:var(--night);border-radius:10px;padding:15px;font-family:var(--mono);font-size:11px;line-height:1.85;color:var(--night-tx-2);white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word;max-width:100%}.code-c{color:var(--night-tx-3)}.code-k{color:oklch(.78 .17 25)}.copy{position:absolute;top:22px;right:22px;min-height:28px;padding:0 11px;font-size:11px;font-weight:800;color:var(--ink-3);background:#fff;border:1px solid var(--line);border-radius:999px;cursor:pointer;transition:color .16s var(--ease),background .16s var(--ease)}.copy:hover{color:var(--ink);background:var(--line)}.copy.done{background:var(--ink);border-color:var(--ink);color:#fff}.int-note{display:flex;gap:10px;margin-top:24px;padding-left:14px;border-left:2px solid var(--line-strong);font-size:12px;line-height:1.65;color:var(--ink-4);max-width:68ch}.plans{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;align-items:stretch}.plan{position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:18px;padding:30px 28px}.plan-name{font-size:12px;font-weight:900;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-4)}.plan-price{margin-top:16px;display:flex;align-items:baseline;gap:7px;color:var(--ink)}.plan-amount{font-size:clamp(36px,3.6vw,50px);font-weight:900;line-height:1;letter-spacing:-.05em}.plan-per{font-size:14px;font-weight:700;color:var(--ink-4)}.plan-sub{margin-top:8px;font-size:11.5px;font-family:var(--mono);color:var(--ink-4)}.plan-desc{margin-top:16px;font-size:13px;color:var(--ink-3);line-height:1.65;min-height:3.3em}.plan-feats{margin:22px 0 26px;display:grid;gap:10px;flex:1}.plan-feats li{display:grid;grid-template-columns:17px 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