:root{color-scheme:dark;--bg:#101615;--surface:#151e1b;--surface-deep:#111915;--line:#2a3831;--line-soft:#233028;--ink:#eef1e9;--muted:#a1afa4;--subtle:#718277;--mint:#b5e5b5;--lime:#c2e9a6;--mono:Consolas,"SFMono-Regular",monospace;--sans:Inter,"Segoe UI","Microsoft YaHei",system-ui,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:26px}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:15px;line-height:1.7;-webkit-font-smoothing:antialiased}button,textarea{font:inherit}button,a,textarea{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button{cursor:pointer}button:disabled{cursor:default;opacity:.45}[hidden]{display:none!important}button:focus-visible,a:focus-visible,summary:focus-visible{outline:2px solid var(--mint);outline-offset:5px}textarea:focus-visible{outline:2px solid var(--mint);outline-offset:-2px}::selection{background:#b5e5b5;color:#101615}.site-shell{max-width:1232px;margin:auto;padding:0 48px}.skip-link{position:fixed;top:-100px;left:16px;z-index:100;padding:10px 20px;background:var(--mint);color:var(--bg)}.skip-link:focus{top:12px}.site-header{height:108px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:28px}.brand{display:flex;align-items:center;gap:14px;font-weight:650;font-size:21px;letter-spacing:-.7px}.brand-symbol{width:40px;height:44px;font-size:49px;line-height:37px;font-family:Georgia,serif;font-style:italic;letter-spacing:-7px;font-weight:500}.brand-symbol>span{color:var(--mint);font-size:28px;margin-left:6px}.brand-caption{font:8px/1.8 var(--mono);letter-spacing:1.7px;display:block;color:var(--muted)}.site-header nav{display:flex;gap:34px;margin-left:auto}.site-header nav a{font-size:13px;color:var(--muted);transition:color .2s}.site-header nav a:hover,.text-link:hover{color:var(--mint)}.header-link{font-size:12px;border:1px solid #3d5043;padding:10px 16px;white-space:nowrap}.header-link span{margin-left:13px;color:var(--mint)}.hero{display:grid;grid-template-columns:1.2fr 1fr;gap:54px;align-items:center;padding:77px 0 72px}.eyebrow{font:10px/1.5 var(--mono);letter-spacing:1.5px;color:var(--muted);display:flex;align-items:center;gap:10px}.status-dot{display:inline-block;flex:none;width:6px;height:6px;border-radius:50%;background:var(--mint)}h1{font-size:clamp(40px,4.7vw,61px);line-height:1.35;font-weight:560;letter-spacing:-2.6px;margin:24px 0}.mint{color:var(--mint)}.hero-description{font-size:13px;line-height:1.95;color:var(--muted);margin:0 0 27px}.button{border:0;display:inline-flex;align-items:center;justify-content:center;gap:27px;padding:13px 21px;font-size:13px;font-weight:600;line-height:1.4;transition:background .2s,transform .2s}.button-primary{background:var(--mint);color:#142519}.button-primary:hover:enabled,a.button-primary:hover{background:#cef4ca;transform:translateY(-1px)}.hero-button{padding:15px 22px}.hero-footnote{margin-top:22px;display:flex;align-items:center;gap:10px;color:var(--subtle);font-size:11px}.little-line{display:inline-block;width:24px;height:1px;background:#516454}.hero-art{height:337px;position:relative;overflow:hidden;background-color:#1b2820;background-image:radial-gradient(#54634a66 .7px,transparent .7px);background-size:13px 13px;border:1px solid #3c4a39;isolation:isolate}.art-corner{position:absolute;left:20px;right:20px;font:9px/1.5 var(--mono);letter-spacing:1.4px;color:#adbea4;z-index:3}.art-corner-top{top:18px}.art-corner-bottom{bottom:17px;display:flex;justify-content:space-between;border-top:1px solid #83967644;padding-top:12px}.art-corner-bottom span{font-size:19px;line-height:12px}.art-letter{position:absolute;left:65px;top:-23px;font:italic 310px/1.05 Georgia,serif;color:#cfdfb1;letter-spacing:-25px;z-index:1;text-shadow:15px 13px 0 #0f1a1266;transform:rotate(-7deg)}.art-letter span{color:#a8d4b5;font-size:260px}.orbit{position:absolute;border:1px solid #95b69155;border-radius:50%;width:330px;height:180px;transform:rotate(-37deg);top:79px;left:25px}.orbit-two{transform:rotate(36deg);width:380px;height:240px;top:41px;left:14px;border-color:#95b69133}.orbit-dot{position:absolute;left:40px;top:192px;width:8px;height:8px;background:var(--mint);border-radius:50%;z-index:3;box-shadow:0 0 0 5px #b5e5b511}.art-sticker{position:absolute;right:19px;top:115px;background:#dedeca;color:#29382b;padding:17px 21px;transform:rotate(7deg);z-index:2;font:30px/1.05 Georgia,serif;box-shadow:3px 4px 0 #0a140b33}.art-sticker em{font-weight:400}.art-sticker span{display:block;font:9px/1.6 var(--sans);margin-top:11px;letter-spacing:1.1px}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:23px}.section-index{font:10px/1.6 var(--mono);letter-spacing:1.7px;color:var(--subtle)}h2{font-size:27px;line-height:1.4;font-weight:550;letter-spacing:-.8px;margin:10px 0 0}.section-heading>p{font-size:11px;line-height:1.6;color:var(--muted);margin:0 0 4px;display:flex;align-items:center;gap:8px}.section-heading .status-dot{width:5px;height:5px}.workbench{border:1px solid #3b4b3e;background:var(--surface)}.workbench-top{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding:0 22px;gap:16px}.tool-tabs{display:flex;align-items:stretch;gap:24px}.tool-tab{color:var(--muted);background:transparent;border:0;padding:20px 4px 17px;font-size:12px;border-bottom:2px solid transparent;white-space:nowrap}.tool-tab>span{font:13px var(--mono);margin-right:7px;color:var(--subtle)}.tool-tab.active{color:var(--mint);border-bottom-color:var(--mint)}.tool-tab.active>span{color:var(--mint)}.local-badge{font:9px var(--mono);letter-spacing:1px;color:#849788;white-space:nowrap}.local-badge>span{font-size:14px;vertical-align:middle;margin-right:5px}.tool-description-row{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:74px;padding:14px 26px}.tool-description-row>p{font-size:11px;color:var(--muted);margin:0;line-height:1.8}.mode-controls{display:flex;border:1px solid #465944;padding:3px;flex:none}.mode-controls button{border:0;background:transparent;color:var(--muted);font-size:11px;line-height:1.3;padding:7px 13px}.mode-controls button[aria-pressed=true]{background:#334531;color:#e4efd9}.editors{display:grid;grid-template-columns:1fr 1fr;padding:0 26px;gap:18px}.editor{min-width:0;background:var(--surface-deep);border:1px solid var(--line);display:flex;flex-direction:column}.editor-heading{padding:12px 15px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line-soft);gap:8px;min-height:48px}.editor-heading label{font-size:11px;font-weight:600;white-space:nowrap}.editor-heading label span{font:9px var(--mono);color:var(--subtle);margin-left:7px;letter-spacing:1px}.editor-actions{display:flex;gap:14px}.editor-actions button,.copy-button{background:transparent;border:0;color:var(--muted);font-size:10px;padding:2px 0}.editor-actions button:hover,.copy-button:hover:enabled{color:var(--mint)}.copy-button{display:flex;align-items:center;gap:5px;white-space:nowrap}.copy-button svg{width:13px;height:13px;fill:none;stroke:currentColor;stroke-width:1.3}.editor textarea{width:100%;min-height:163px;resize:vertical;border:0;border-radius:0;display:block;padding:17px 15px;background:transparent;color:#e2eadf;font:13px/1.9 var(--mono),"Microsoft YaHei",sans-serif;overflow-wrap:anywhere;white-space:pre-wrap}.output-editor textarea{color:var(--mint);word-break:break-all}.editor textarea::placeholder{color:#65796a;font-size:12px}.editor-meta{margin-top:auto;display:flex;justify-content:space-between;padding:8px 15px;border-top:1px solid var(--line-soft);font:9px/1.5 var(--mono);color:var(--subtle);gap:12px}.workbench-footer{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:21px 26px}.run-actions{display:flex;gap:16px;align-items:center}.swap-button{border:0;background:transparent;color:var(--muted);font-size:11px;padding:8px 0;white-space:nowrap}.swap-button>span{margin-left:7px}#tool-status{font-size:11px;line-height:1.8;color:var(--muted);margin:0;text-align:right;max-width:48%;overflow-wrap:anywhere}#tool-status[data-state=error]{color:#f5b3a7}#tool-status[data-state=success]{color:#bad0aa}.toolbox-caption{display:flex;justify-content:space-between;gap:18px;font:10px/1.8 var(--mono);color:var(--subtle);margin-top:12px}.noscript-note{border:1px solid #a98650;padding:15px;color:#edd4ad}.notes-section{margin-top:74px}.note-list{border-top:1px solid var(--line)}.note{border-bottom:1px solid var(--line)}.note summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:28px;padding:24px 7px;transition:background .2s}.note summary::-webkit-details-marker{display:none}.note summary:hover{background:#18241a}.note-number{font:12px var(--mono);color:#6d8671;align-self:flex-start;padding-top:4px;min-width:30px}.note-category{font:9px var(--mono);letter-spacing:1.2px;color:var(--subtle)}h3{font-weight:500;font-size:18px;line-height:1.6;margin:5px 0 4px;letter-spacing:-.2px}.note summary p{font-size:11px;color:var(--muted);margin:0}.note-open{margin-left:auto;align-self:center;font-size:22px;font-weight:300;color:var(--mint);padding:0 9px}.note[open] .note-open{transform:rotate(45deg)}.note-body{max-width:810px;padding:0 58px 26px;font-size:13px;line-height:1.95;color:#b6c3b7}.note-body p:first-child{margin-top:0}.note-body code{font:11px var(--mono);padding:2px 5px;background:#26362a;color:var(--mint)}.text-link{background:transparent;border:0;padding:4px 0;font-size:12px;color:var(--mint)}.text-link span{margin-left:12px}.about-section{margin-top:72px;display:flex;gap:28px;align-items:center;border-top:1px solid var(--line);padding:36px 0}.about-mark{font-size:53px;line-height:1;color:var(--mint);align-self:flex-start}.about-section h2{font-size:23px}.about-section p{font-size:12px;color:var(--muted);margin-bottom:0;max-width:630px}.about-tag{margin-left:auto;font:12px/1.45 var(--mono);letter-spacing:1px;color:#6b816f;padding-left:20px}.about-tag span{color:var(--mint)}.site-footer{display:flex;justify-content:space-between;align-items:center;gap:20px;border-top:1px solid var(--line);padding:24px 0 35px;font:9px/1.8 var(--mono);letter-spacing:.6px;color:var(--subtle)}.site-footer>span{display:flex;align-items:center;gap:9px}.site-footer a{white-space:nowrap}.site-footer a span{margin-left:9px;color:var(--mint)}
@media(min-width:1500px){.site-shell{max-width:1310px}.hero{gap:100px}.hero-art{height:365px}.art-letter{top:-12px;left:90px}.art-sticker{right:23px;top:130px}.orbit{left:55px;top:94px}.orbit-two{left:39px;top:55px}}
@media(max-width:900px){.site-shell{padding:0 28px}.site-header{height:92px;gap:16px}.site-header nav{gap:22px}.header-link{display:none}.hero{gap:28px;padding:56px 0 58px;grid-template-columns:1.15fr 1fr}h1{font-size:45px;letter-spacing:-2px}.hero-art{height:310px}.art-letter{left:25px;top:0;font-size:275px}.art-letter span{font-size:220px}.art-sticker{right:12px;top:132px;font-size:23px;padding:14px}.orbit{left:-25px}.orbit-two{left:-40px}.art-corner{font-size:8px}.tool-tabs{gap:20px}.local-badge{display:none}.section-heading>p{max-width:210px}.editors{padding:0 20px;gap:12px}.tool-description-row{padding:14px 20px}.workbench-footer{padding:19px 20px;flex-wrap:wrap}#tool-status{max-width:100%;text-align:left}.hero-description{font-size:12px}.desktop-break{display:none}.run-actions{flex-wrap:wrap}}
@media(max-width:640px){.site-shell{padding:0 20px}.site-header{height:83px;gap:12px}.brand{font-size:19px;gap:9px}.brand-caption{font-size:7px;letter-spacing:1px}.brand-symbol{width:31px}.site-header nav{gap:15px}.site-header nav a{font-size:11px}.hero{grid-template-columns:1fr;padding:40px 0 43px;gap:32px}.eyebrow{font-size:8px;letter-spacing:1.2px}h1{font-size:48px;line-height:1.3;letter-spacing:-2.2px;margin:20px 0}.hero-description{font-size:12px}.hero-art{height:224px}.art-letter{font-size:225px;top:-32px;left:60px;letter-spacing:-20px}.art-letter span{font-size:190px}.art-sticker{right:30px;top:60px;font-size:26px;padding:15px 20px}.art-corner-top{top:13px}.art-corner-bottom{bottom:13px;padding-top:8px}.orbit{left:40px;top:30px;width:260px;height:140px}.orbit-two{left:10px;top:-12px;width:310px;height:210px}.orbit-dot{left:39px;top:129px}.hero-footnote{margin-top:17px;font-size:10px}.section-heading{align-items:start;flex-direction:column;gap:10px;margin-bottom:19px}.section-heading>p{max-width:none;margin:0;font-size:10px}.section-index{font-size:9px}h2{font-size:25px;margin-top:8px}.workbench-top{padding:0 13px}.tool-tabs{width:100%;gap:0;justify-content:space-between}.tool-tab{padding:17px 3px 14px;font-size:11px}.tool-tab>span{margin-right:4px;font-size:11px}.tool-description-row{padding:16px;gap:12px;align-items:flex-start;flex-direction:column;min-height:0}.tool-description-row>p{font-size:11px}.editors{grid-template-columns:1fr;padding:0 15px;gap:12px}.editor textarea{min-height:145px;padding:13px;font-size:12px}.editor-heading{padding:11px 13px}.editor-meta{padding:8px 13px}.output-editor textarea{min-height:130px}.workbench-footer{padding:18px 15px;gap:12px;align-items:flex-start;flex-direction:column}.run-actions{gap:13px;width:100%}.run-actions>.button{flex:1;padding:13px 12px;font-size:12px;gap:12px}.swap-button{font-size:10px}#tool-status{font-size:10px}.toolbox-caption{font-size:9px;flex-direction:column;gap:2px}.notes-section{margin-top:49px}.note summary{gap:13px;padding:20px 0}.note-number{font-size:10px;min-width:20px}.note-category{font-size:8px;letter-spacing:.7px}h3{font-size:15px;line-height:1.55}.note summary p{font-size:10px}.note-open{font-size:20px;padding:0 3px}.note-body{padding:0 15px 22px 33px;font-size:12px}.about-section{margin-top:46px;padding:28px 0;gap:15px;align-items:flex-start}.about-mark{font-size:34px}.about-section h2{font-size:21px}.about-section p{font-size:11px}.about-tag{display:none}.site-footer{font-size:8px;letter-spacing:0;padding:20px 0 26px;align-items:flex-start}.site-footer>span{max-width:220px}.site-footer .status-dot{width:4px;height:4px;margin-top:4px}}
@media(max-width:360px){.site-shell{padding:0 15px}.site-header nav{gap:11px}.brand-caption{display:none}.brand{font-size:18px}.site-header{height:73px}h1{font-size:41px}.hero-art{height:205px}.art-letter{left:35px;top:-40px}.art-sticker{right:15px;top:56px;font-size:24px}.tool-tab{font-size:10px}.tool-tab>span{font-size:10px;margin-right:3px}.editor-actions{gap:10px}.editor-heading label span{font-size:8px;margin-left:5px}.copy-button{font-size:9px}.run-actions{gap:8px}.swap-button{font-size:9px}.hero-footnote{font-size:9px}.section-heading h2{font-size:23px}.site-footer{gap:8px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}