:root{color-scheme:light;--bg: #f7f8fa;--surface: #ffffff;--surface-muted: #f1f4f7;--text: #18202a;--muted: #66717f;--line: #dde3ea;--accent: #126b63;--accent-dark: #0f554f;--accent-soft: #e4f3f1;--danger: #b42318;--danger-soft: #fff1f0;--danger-line: #ffccc7;--shadow: 0 12px 32px rgba(21, 31, 44, .08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.5}a{color:inherit;text-decoration:none}button,textarea{font:inherit}button{cursor:pointer}.site-header{position:sticky;top:0;z-index:10;border-bottom:1px solid rgba(221,227,234,.9);background:#f7f8faeb;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.nav,main,.site-footer{width:min(1120px,calc(100% - 40px));margin:0 auto}.nav{display:flex;min-height:68px;align-items:center;justify-content:space-between;gap:24px}.brand{display:inline-flex;align-items:center;gap:11px;font-size:1rem;font-weight:720}.brand-mark{display:inline-flex;width:40px;height:40px;align-items:center;justify-content:center;border-radius:8px;background:var(--accent);color:#fff;font-weight:800}.home-link,.btn-secondary,.btn-danger,.btn-primary{display:inline-flex;min-height:40px;align-items:center;justify-content:center;border-radius:7px;font-size:.9rem;font-weight:720;padding:8px 13px;transition:background .16s ease,border-color .16s ease,color .16s ease,transform .16s ease}.home-link,.btn-secondary{border:1px solid var(--line);background:var(--surface);color:var(--muted)}.home-link:hover,.home-link:focus-visible,.btn-secondary:hover,.btn-secondary:focus-visible{border-color:#c6d1dc;background:var(--surface-muted);color:var(--text);outline:none}main{padding:54px 0 48px}.intro{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(280px,.85fr);gap:32px;align-items:end;padding-bottom:34px}.eyebrow{margin:0 0 10px;color:var(--accent);font-size:.78rem;font-weight:760;letter-spacing:.08em;text-transform:uppercase}h1,h2,p{margin-top:0}h1{max-width:760px;margin-bottom:0;font-size:clamp(2.2rem,5vw,4.6rem);line-height:1;letter-spacing:0}.intro-text{max-width:440px;margin:0;color:var(--muted);font-size:1.08rem}.tool-shell{border:1px solid var(--line);border-radius:8px;background:var(--surface);box-shadow:var(--shadow);padding:20px}.tool-heading{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:16px}.tool-heading h2{margin-bottom:4px;font-size:1.05rem}.tool-heading p{margin-bottom:0;color:var(--muted);font-size:.95rem}.counter{border-radius:6px;background:var(--accent-soft);color:var(--accent-dark);font-size:.78rem;font-weight:760;padding:5px 9px;white-space:nowrap}.editor-wrap{display:grid;grid-template-columns:18px minmax(0,1fr);gap:10px;align-items:stretch}.line-markers{min-height:420px;overflow:hidden;padding-top:16px;pointer-events:none}.line-dot{display:block;width:7px;height:var(--line-block-height, 27.2px);position:relative}.line-dot:before{content:"";position:absolute;top:var(--dot-top, 10px);left:5px;width:5px;height:5px;border-radius:50%;background:#a7c9c5}.line-dot.is-empty:before{background:transparent}#text-box{display:block;width:100%;min-height:420px;resize:vertical;border:1px solid var(--line);border-radius:8px;background:#fbfcfd;color:var(--text);font-size:1rem;line-height:1.7;outline:none;padding:16px;white-space:pre-wrap}#text-box:focus{border-color:#a7c9c5;background:#fff;box-shadow:0 0 0 3px #126b631a}#text-box::placeholder{color:#8a96a3}.action-row{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:14px}.left-actions,.right-actions{display:flex;gap:8px;flex-wrap:wrap}.btn-primary{border:1px solid var(--accent);background:var(--accent);color:#fff}.btn-primary:hover,.btn-primary:focus-visible{border-color:var(--accent-dark);background:var(--accent-dark);outline:none;transform:translateY(-1px)}.btn-danger{border:1px solid var(--danger-line);background:var(--danger-soft);color:var(--danger)}.btn-danger:hover,.btn-danger:focus-visible{background:#ffe4e1;outline:none}.status{min-height:22px;margin:12px 0 0;color:var(--muted);font-size:.9rem}.site-footer{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);color:var(--muted);font-size:.9rem;padding:24px 0 34px}.site-footer p{margin-bottom:0}.site-footer>div p+p{margin-top:5px}.footer-links{display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-end;gap:8px 15px}.footer-links a:hover,.footer-links a:focus-visible{color:var(--accent-dark);text-decoration:underline;text-underline-offset:3px}@media(max-width:760px){.intro{grid-template-columns:1fr;gap:16px;padding-bottom:22px}.tool-heading{display:block}.counter{display:inline-flex;margin-top:12px}}@media(max-width:620px){.nav,main,.site-footer{width:min(100% - 28px,1120px)}.nav{min-height:62px}.brand-name{display:none}main{padding-top:38px}h1{font-size:2.45rem}.tool-shell{padding:16px}.editor-wrap{grid-template-columns:14px minmax(0,1fr);gap:8px}.line-markers,#text-box{min-height:360px}.site-footer{display:block}.site-footer p+p{margin-top:6px}.footer-links{justify-content:flex-start;margin-top:12px}}