:root{--paper:#f5f6f2;--paper-dim:#ecede8;--ink:#14171c;--ink-soft:#565b62;--highlighter:#ffde59;--highlighter-soft:#fff3c4;--teal:#0e7c7b;--teal-deep:#0a5f5e;--coral:#e8503a;--line:#d8d9d4;--white:#fff;--radius:14px;--font-display:"Space Grotesk",sans-serif;--font-body:"Source Serif 4",serif;--font-mono:"IBM Plex Mono",monospace}*{box-sizing:border-box}body,html{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font-body);-webkit-font-smoothing:antialiased}.wrap{max-width:880px;margin:0 auto;padding:0 24px 80px}header{justify-content:space-between;padding:32px 0 12px}.logo,header{display:flex;align-items:center}.logo{font-family:var(--font-display);font-weight:700;font-size:22px;letter-spacing:-.02em;gap:8px}.logo-mark{width:26px;height:26px;display:block;transform:rotate(-4deg);flex-shrink:0}.tagline-small{font-family:var(--font-mono);font-size:12px;color:var(--ink-soft);letter-spacing:.02em}.header-right{display:flex;align-items:center;gap:14px}.ui-lang-toggle{display:flex;background:var(--paper-dim);padding:3px;border-radius:999px}.ui-lang-opt{font-family:var(--font-mono);font-size:11px;font-weight:500;letter-spacing:.04em;padding:5px 11px;border-radius:999px;border:none;background:transparent;color:var(--ink-soft);cursor:pointer;transition:background .15s ease,color .15s ease}.ui-lang-opt.active{background:var(--ink);color:var(--paper)}.ui-lang-opt:not(.active):hover{color:var(--ink)}.hero{padding:8px 0 36px;border-bottom:1px solid var(--line)}.eyebrow{font-family:var(--font-mono);font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--teal-deep);margin:0 0 14px}h1{font-family:var(--font-display);font-weight:700;font-size:clamp(32px,5vw,48px);line-height:1.05;letter-spacing:-.02em;margin:0 0 16px}h1 .mark{background:linear-gradient(to bottom,transparent 62%,var(--highlighter) 62%);padding:0 2px}.sub{font-size:18px;line-height:1.55;color:var(--ink-soft);max-width:560px;margin:0}.tool{margin-top:40px}.mode-tabs{display:flex;gap:8px;margin-bottom:18px;flex-wrap:wrap}.mode-tab{font-family:var(--font-display);font-weight:600;font-size:14px;padding:10px 18px;border-radius:999px;border:1.5px solid var(--ink);background:transparent;color:var(--ink);cursor:pointer;transition:all .15s ease;display:flex;align-items:center;gap:7px}.mode-tab:hover{background:var(--paper-dim)}.mode-tab.active{background:var(--ink);color:var(--paper)}.mode-icon{display:inline-flex;width:17px;height:17px;flex-shrink:0}.mode-icon svg{width:100%;height:100%}.sub-controls{display:flex;align-items:center;gap:10px;margin-bottom:18px;min-height:34px;font-family:var(--font-mono);font-size:13px;color:var(--ink-soft);flex-wrap:wrap}.pill-select{display:flex;gap:6px;background:var(--paper-dim);padding:4px;border-radius:999px}.pill-opt{font-family:var(--font-mono);font-size:12px;padding:6px 12px;border-radius:999px;border:none;background:transparent;cursor:pointer;color:var(--ink-soft)}.pill-opt.active{box-shadow:0 1px 2px rgba(0,0,0,.08)}.pill-opt.active,select.lang-select{background:var(--white);color:var(--ink)}select.lang-select{font-family:var(--font-mono);font-size:13px;padding:7px 12px;border-radius:999px;border:1px solid var(--line)}.panel{background:var(--white);border:1.5px solid var(--ink);border-radius:var(--radius);box-shadow:4px 4px 0 var(--ink);overflow:hidden}textarea{width:100%;border:none;outline:none;resize:vertical;min-height:140px;padding:22px;font-family:var(--font-body);font-size:17px;line-height:1.6;color:var(--ink);background:transparent;display:block}textarea::placeholder{color:#a3a8ac}.panel-footer{display:flex;align-items:center;justify-content:space-between;padding:12px 18px;border-top:1px solid var(--line);background:var(--paper-dim)}.char-count{font-family:var(--font-mono);font-size:12px;color:var(--ink-soft);transition:color .15s ease}.char-count.near{color:#a8730c}.char-count.over{color:var(--coral);font-weight:500}.go-btn{font-family:var(--font-display);font-weight:700;font-size:14px;padding:10px 22px;border-radius:999px;border:none;background:var(--teal);color:var(--white);cursor:pointer;display:flex;align-items:center;gap:8px;transition:background .15s ease,transform .1s ease}.go-btn:hover{background:var(--teal-deep)}.go-btn:active{transform:scale(.97)}.go-btn:disabled{background:#b7bbb8;cursor:not-allowed}.spinner{width:14px;height:14px;border:2px solid hsla(0,0%,100%,.4);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}.output-wrap{margin-top:26px}.output-label{font-family:var(--font-mono);font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--teal-deep);margin-bottom:10px;display:flex;align-items:center;gap:8px}.output-label:before{content:"";width:8px;height:8px;background:var(--teal);border-radius:50%}.output-card{position:relative;background:var(--white);border-left:4px solid var(--teal);border-radius:10px;padding:24px 26px;font-size:18px;line-height:1.7;box-shadow:0 1px 3px rgba(0,0,0,.06);overflow:hidden}.sweep{position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(100deg,transparent 0,var(--highlighter) 45%,transparent 90%);transform:translateX(-100%);pointer-events:none}.sweep.animate{animation:sweep-move .9s ease}@keyframes sweep-move{to{transform:translateX(100%)}}.output-text{position:relative;z-index:1;white-space:pre-wrap}.output-text .md-p{margin:0 0 12px;white-space:pre-wrap}.output-text .md-p:last-child{margin-bottom:0}.output-text .md-heading{font-family:var(--font-display);font-size:15px;font-weight:700;letter-spacing:.01em;text-transform:uppercase;color:var(--teal-deep);margin:22px 0 10px}.output-text .md-heading:first-child{margin-top:0}.output-text .md-list{margin:0 0 14px;padding-left:0;list-style:none}.output-text .md-list li{position:relative;padding-left:20px;margin-bottom:9px}.output-text .md-list li:before{content:"";position:absolute;left:2px;top:.62em;width:7px;height:7px;background:var(--highlighter);border:1px solid var(--ink);border-radius:2px;transform:rotate(-8deg)}.output-text .md-list li strong{font-weight:600;color:var(--ink)}.output-text .md-rule{border:none;border-top:1px solid var(--line);margin:18px 0}.hl-source{white-space:pre-wrap;line-height:1.85}.hl-mark{font:inherit;color:inherit;border:none;padding:1px 3px;margin:0 -1px;cursor:pointer;border-radius:3px;background:linear-gradient(to bottom,transparent 8%,var(--highlighter-soft) 8%,var(--highlighter) 92%,transparent 92%);box-decoration-break:clone;-webkit-box-decoration-break:clone;transition:background .15s ease,box-shadow .15s ease}.hl-mark:hover{background:var(--highlighter);box-shadow:0 0 0 2px rgba(255,222,89,.5)}.hl-mark.active{background:var(--highlighter);box-shadow:0 0 0 2px var(--ink);font-weight:600}.hl-panel{margin-top:14px;background:var(--white);border:1.5px solid var(--ink);border-radius:12px;box-shadow:3px 3px 0 var(--highlighter);padding:16px 20px;animation:hl-panel-in .18s ease}@keyframes hl-panel-in{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.hl-panel-term{font-family:var(--font-display);font-weight:700;font-size:16px;margin-bottom:6px}.hl-panel-body{font-size:16px;line-height:1.6;color:var(--ink-soft)}.hl-hint{margin-top:14px;font-family:var(--font-mono);font-size:12px;color:var(--ink-soft);padding-left:2px}.hl-next-action{margin-top:18px;font-family:var(--font-display);font-weight:600;font-size:14px;padding:10px 20px;border-radius:999px;border:1.5px solid var(--ink);background:transparent;color:var(--ink);cursor:pointer;transition:background .15s ease}.hl-next-action:hover{background:var(--paper-dim)}@media (prefers-reduced-motion:reduce){.hl-panel{animation:none}}.copy-btn{font-family:var(--font-mono);font-size:12px;padding:5px 12px;border-radius:999px;border:1px solid var(--line);background:var(--white);color:var(--ink-soft);cursor:pointer;margin-left:auto}.copy-btn:hover{border-color:var(--ink);color:var(--ink)}.cleaned-note{font-family:var(--font-mono);font-size:11px;text-transform:none;letter-spacing:0;color:var(--ink-soft);background:var(--paper-dim);padding:3px 9px;border-radius:999px;margin-left:auto}.cleaned-note+.copy-btn{margin-left:8px}.examples{margin-top:14px;display:flex;gap:8px;flex-wrap:wrap;align-items:center}.example-chip,.examples-label{font-family:var(--font-mono);font-size:12px;color:var(--ink-soft)}.example-chip{padding:6px 12px;border-radius:999px;border:1px solid var(--line);background:var(--white);cursor:pointer}.example-chip:hover{border-color:var(--ink);color:var(--ink)}.error-box{margin-top:16px;padding:14px 18px;border-radius:10px;background:#fdeeec;border-left:4px solid var(--coral);color:#8a2d1f;font-size:13px}.error-box,footer{font-family:var(--font-mono)}footer{margin-top:60px;padding-top:20px;border-top:1px solid var(--line);font-size:12px;color:var(--ink-soft);display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}@media (prefers-reduced-motion:reduce){.sweep.animate{animation:none}*{transition:none!important}}@media (max-width:560px){h1{font-size:30px}.sub{font-size:16px}header{flex-direction:row;align-items:center;gap:10px;flex-wrap:wrap}.header-right .tagline-small{display:none}}