:root{--fg: #1d1d1f;--muted: #6e6e73;--accent: #6e6e73;--card-bg: rgba(255, 255, 255, .7);--card-shadow: 0 12px 28px rgba(0, 0, 0, .06), 0 1px 2px rgba(0, 0, 0, .03), 0 0 0 1px rgba(0, 0, 0, .035);--hairline: rgba(0, 0, 0, .06);--code-bg: rgba(245, 245, 245, .6);--radius: 24px;--bg-grad: radial-gradient(55% 60% at 15% 4%, rgba(229, 229, 234, .6), transparent 70%), radial-gradient(50% 55% at 85% 12%, rgba(209, 209, 214, .5), transparent 70%), radial-gradient(60% 50% at 30% 95%, rgba(234, 235, 239, .7), transparent 70%), radial-gradient(45% 45% at 50% 50%, rgba(255, 255, 255, .85), transparent 70%), linear-gradient(135deg, #e8e8ed, #f2f2f7)}:root[data-dark]{--fg: #f5f5f7;--muted: #9da0a8;--card-bg: rgba(36, 38, 46, .72);--card-shadow: 0 20px 40px rgba(0, 0, 0, .45), 0 0 0 1px rgba(255, 255, 255, .07);--hairline: rgba(255, 255, 255, .09);--code-bg: rgba(255, 255, 255, .05);--bg-grad: radial-gradient(55% 60% at 15% 4%, rgba(60, 64, 82, .55), transparent 70%), radial-gradient(50% 55% at 85% 12%, rgba(40, 42, 60, .5), transparent 70%), radial-gradient(60% 55% at 50% 95%, rgba(30, 32, 44, .6), transparent 70%), linear-gradient(135deg, #15171d, #0f1014)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;color:var(--fg);background:var(--bg-grad) fixed;min-height:100vh;overflow-x:hidden;-webkit-font-smoothing:antialiased}.lg{backdrop-filter:blur(16px) saturate(1.5);-webkit-backdrop-filter:blur(16px) saturate(1.5)}.header-controls{position:fixed;top:16px;right:18px;z-index:20;display:flex;align-items:center;gap:8px}.icon-btn{width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;padding:0;border:none;cursor:pointer;color:#333;background:linear-gradient(180deg,#f5f5f54d,#f5f5f580);box-shadow:inset 0 1px 2px #ffffff80,inset 0 -1px 2px #0000000d,inset 0 0 0 1px #ffffff4d,0 1px 3px #0000000f;transition:all .3s cubic-bezier(.4,0,.2,1)}.icon-btn:hover{color:#000;transform:translateY(-1px)}.icon-btn svg{width:20px;height:20px}:root[data-dark] .icon-btn{color:var(--fg);background:#ffffff14;box-shadow:inset 0 0 0 1px #ffffff1f}.container{width:min(100%,1200px);margin:0 auto;padding:84px 32px 48px}.header-main{text-align:center;padding:18px 0 40px}.header-main h1{font-size:clamp(30px,6vw,52px);font-weight:700;letter-spacing:-.025em;margin:0}.header-main .arrow{color:var(--muted);font-weight:400}.header-main .sub{font-size:clamp(16px,2.4vw,20px);color:var(--fg);margin:14px 0 4px;font-weight:500}.header-main .sub2{font-size:14px;color:var(--muted);margin:0}.main-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,420px),1fr));gap:24px}.card{min-width:0;background:var(--card-bg);border-radius:var(--radius);box-shadow:var(--card-shadow);padding:28px}.card-header{display:flex;align-items:baseline;flex-wrap:wrap;gap:4px 10px;margin-bottom:16px}.card-header h2{font-size:17px;font-weight:600;margin:0}.cap{font-size:12px;color:var(--muted)}.code{max-width:100%;margin:0;background:var(--code-bg);border-radius:12px;padding:16px;overflow:auto;box-shadow:inset 0 0 0 1px var(--hairline)}.code code{display:block;min-width:100%;width:max-content;font-family:JetBrains Mono,SF Mono,ui-monospace,monospace;font-size:12.5px;line-height:1.7;color:var(--fg);white-space:pre}.chart{max-width:100%;padding:6px 2px;overflow:hidden}.chart svg{display:block;max-width:100%;height:auto}.note{font-size:11.5px;color:var(--muted);margin:14px 0 0}.grid-note{font-size:12px;color:var(--muted);margin:14px 2px 0;text-align:center}.examples{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}.examples button{font:inherit;font-size:12px;font-weight:500;padding:6px 14px;border-radius:16px;cursor:pointer;color:var(--muted);border:none;background:var(--code-bg);box-shadow:inset 0 0 0 1px var(--hairline)}.examples button.active,.examples button:hover{color:var(--fg);box-shadow:inset 0 0 0 1px var(--muted)}.editor{display:flex;flex-direction:column;gap:14px}textarea{font-family:JetBrains Mono,SF Mono,ui-monospace,monospace;font-size:13px;line-height:1.65;width:100%;min-height:150px;resize:vertical;padding:16px;border-radius:14px;border:none;color:var(--fg);background:var(--code-bg);box-shadow:inset 0 0 0 1px var(--hairline)}textarea:focus{outline:none;box-shadow:inset 0 0 0 2px var(--muted)}.preview{display:flex;align-items:center;justify-content:center;min-height:220px;padding:16px;overflow:auto;border-radius:14px;background:#fff6;box-shadow:inset 0 0 0 1px var(--hairline)}:root[data-dark] .preview{background:#0000002e}.preview svg{max-width:100%;height:auto}.preview.err{color:#d9534f;font-size:13px;font-family:JetBrains Mono,monospace}.diagrams-section{margin-top:40px}.diagrams-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}.tile{background:var(--card-bg);border-radius:18px;box-shadow:var(--card-shadow);overflow:hidden;display:flex;flex-direction:column;cursor:pointer;transition:transform .18s,box-shadow .18s}.tile:hover{transform:translateY(-3px);box-shadow:0 24px 48px #00000024,0 0 0 1px #0a84ff66}.tile .tag{font-size:12px;font-weight:600;padding:12px 16px 0;color:var(--fg)}.tile .src{margin:8px 16px 0;padding:10px 12px;border-radius:10px;background:var(--code-bg);box-shadow:inset 0 0 0 1px var(--hairline);font-family:JetBrains Mono,ui-monospace,monospace;font-size:11px;line-height:1.55;color:var(--muted);white-space:pre;overflow:auto;max-height:130px}.tile .render{flex:1;display:flex;align-items:center;justify-content:center;margin:12px 16px 16px;padding:18px;min-height:150px;overflow:auto;border-radius:12px;box-shadow:inset 0 0 0 1px var(--hairline)}.tile .render svg{max-width:100%;height:auto}.globe{font-size:14px}.modal{position:fixed;inset:0;z-index:50;display:flex;align-items:center;justify-content:center;background:#00000047;backdrop-filter:blur(6px);padding:20px}.modal[hidden]{display:none}.modal-card{position:relative;width:min(720px,94vw);max-height:86vh;overflow:auto;background:var(--card-bg);border-radius:var(--radius);box-shadow:var(--card-shadow);padding:28px 26px 60px}.modal-card h3{text-align:center;margin:0 0 20px;font-size:18px;font-weight:700;color:var(--fg)}.lang-grid{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}.lang-grid button{font:inherit;font-size:13px;font-weight:500;padding:7px 14px;border-radius:18px;cursor:pointer;color:var(--fg);border:none;background:var(--code-bg);box-shadow:inset 0 0 0 1px var(--hairline);transition:all .2s}.lang-grid button:hover{box-shadow:inset 0 0 0 1px var(--muted)}.lang-grid button.active{background:#0a84ff;color:#fff;box-shadow:none}.modal-close{position:absolute;left:50%;bottom:16px;transform:translate(-50%);width:38px;height:38px;border-radius:50%;border:none;cursor:pointer;font-size:20px;line-height:1;color:var(--muted);background:var(--code-bg);box-shadow:inset 0 0 0 1px var(--hairline)}.modal-close:hover{color:var(--fg)}[dir=rtl] .header-controls{right:auto;left:18px}[dir=rtl] .code,[dir=rtl] .src,[dir=rtl] textarea{direction:ltr;text-align:left}footer{text-align:center;padding:40px;color:var(--muted);font-size:13px}@media(max-width:760px){.container{padding:74px 14px 36px}.header-main{padding:8px 0 26px}.header-controls{top:12px;right:12px;gap:6px}.icon-btn{width:40px;height:40px}.main-grid{gap:16px}.card{padding:20px;border-radius:18px}.card-header{margin-bottom:14px}.cap{flex-basis:100%}.examples{flex-wrap:nowrap;overflow-x:auto;padding-bottom:2px;scrollbar-width:none}.examples::-webkit-scrollbar{display:none}.examples button{flex:0 0 auto}textarea{min-height:132px}.preview{min-height:180px;padding:12px}.diagrams-section{margin-top:28px}.diagrams-grid{grid-template-columns:1fr;gap:16px}.code code{font-size:11.5px}.modal-card{padding:22px 16px 56px}.lang-grid button{font-size:12px;padding:6px 11px}}@media(max-width:420px){.container{padding:70px 10px 32px}.header-main h1{font-size:34px}.header-main .sub{font-size:15px}.header-main .sub2{font-size:12px}.card{padding:14px;border-radius:16px}.card-header h2{font-size:16px}.code{padding:12px}.code code{font-size:10.5px}.chart{padding:2px 0}.examples button{padding:6px 12px}}