@font-face{font-family:Inter;src:url(/linesmith/fonts/inter-ext.woff2) format("woff2");font-weight:100 900;font-display:swap}
:root{--bg:#0e1418;--panel:#141c21;--line:#22303a;--text:#e8eef1;--muted:#9aabb5;--green:#50c39b;--green-dark:#102c23;--amber:#ffb36b}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;line-height:1.65}
a{color:var(--green);text-underline-offset:3px}a:hover{color:#8cddbe}a:focus-visible,summary:focus-visible{outline:3px solid var(--green);outline-offset:5px;border-radius:4px}
.wrap{max-width:1120px;margin:auto;padding:0 24px}header{border-bottom:1px solid var(--line);background:var(--bg)}header .wrap{display:flex;justify-content:space-between;align-items:center;gap:20px;min-height:78px}
.brand{display:flex;align-items:center;gap:10px;font-size:1.2rem;font-weight:750;text-decoration:none;color:var(--text)}.brand img{width:32px;height:32px;border-radius:8px}.languages{display:flex;gap:6px;align-items:center}.languages a{padding:6px 12px;text-decoration:none;color:var(--muted);border-radius:8px}.languages a[aria-current=page]{color:var(--text);background:var(--panel);box-shadow:inset 0 0 0 1px var(--line)}
main{padding:48px 0 72px}.back{font-size:.92rem}.intro{padding:34px 0 28px}.kicker{margin:0 0 12px;color:var(--green);font-size:.8rem;font-weight:750;letter-spacing:.14em;text-transform:uppercase}h1{font-size:clamp(2.2rem,5vw,3.8rem);line-height:1.08;letter-spacing:-.04em;margin:0 0 20px;max-width:850px}h2,h3{letter-spacing:-.025em;line-height:1.25}h2{font-size:clamp(1.55rem,3vw,2.15rem);margin:0 0 12px}h3{margin:0 0 12px;font-size:1.1rem}.lead{color:var(--muted);max-width:760px;font-size:1.1rem;margin:0 0 24px}.btn{display:inline-flex;justify-content:center;align-items:center;padding:12px 20px;border:1px solid var(--line);border-radius:11px;font-weight:650;text-decoration:none;color:var(--text);background:var(--panel)}.btn.primary{background:var(--green);border-color:var(--green);color:var(--green-dark)}.actions{display:flex;align-items:center;flex-wrap:wrap;gap:12px}.meta{font-size:.86rem;color:var(--muted)}
.notice{border:1px solid #604e38;border-radius:16px;background:#1c201e;padding:26px 28px;margin:10px 0 28px}.notice .label{color:var(--amber);font-weight:750;font-size:.82rem;letter-spacing:.08em;text-transform:uppercase}.notice h2{font-size:1.5rem;margin:7px 0 12px}.notice p{max-width:920px;margin:8px 0;color:#c7d1d6}.notice strong{color:var(--text)}.notice .small{font-size:.88rem;color:var(--muted)}
.overview{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 48px}.overview a{display:inline-flex;gap:8px;align-items:center;padding:8px 13px;background:var(--panel);border:1px solid var(--line);border-radius:9px;text-decoration:none;color:var(--text);font-size:.9rem}.overview b{color:var(--green)}
.step{padding:36px 0 44px;border-top:1px solid var(--line);scroll-margin-top:28px}.step-top{display:grid;grid-template-columns:42px 1fr;gap:16px;margin-bottom:24px}.num{display:grid;place-items:center;width:38px;height:38px;background:var(--green-dark);color:var(--green);border:1px solid #2d6855;border-radius:50%;font-weight:750}.step p{color:var(--muted);margin:8px 0;max-width:890px}.step strong{color:var(--text)}.step code,.checksum code{background:#0b1115;border:1px solid var(--line);padding:2px 6px;border-radius:5px;font-size:.87em;overflow-wrap:anywhere}.visual-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}.figure{margin:0;background:#0a1116;border:1px solid var(--line);border-radius:16px;padding:14px;max-width:560px}.figure img{display:block;width:100%;height:auto;border-radius:9px}.figure a{display:block}.figure figcaption{padding:12px 4px 2px;color:var(--muted);font-size:.88rem}.single{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.85fr);align-items:center;gap:30px}.aside{padding:12px 0}.aside h3{color:var(--text)}.aside p{margin-bottom:16px}.hint{border-left:3px solid var(--green);padding-left:16px}.image-note{font-size:.83rem!important;margin-top:14px!important}
.help{border-top:1px solid var(--line);padding-top:38px}details{background:var(--panel);border:1px solid var(--line);padding:17px 20px;margin:10px 0;border-radius:12px}summary{cursor:pointer;font-weight:650}details p{color:var(--muted);margin:14px 0 0}details code{word-break:break-all}.checksum{font-size:.88rem}.checksum code{display:block;padding:12px;margin-top:12px}.support{background:var(--green-dark);border:1px solid #25563f;border-radius:16px;padding:24px 28px;margin-top:30px}.support h2{font-size:1.5rem}.support p{margin:8px 0 0;color:#b7cec4}.support a{color:#8cddbe}
footer{padding:24px 0 34px;border-top:1px solid var(--line);color:var(--muted);font-size:.88rem}footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}footer a{margin-left:12px}img{max-width:100%}
@media(max-width:700px){.wrap{padding:0 18px}main{padding-top:30px}.intro{padding-top:28px}.notice{padding:20px}.visual-row,.single{grid-template-columns:1fr}.figure{max-width:none}.single{gap:12px}.step-top{grid-template-columns:34px 1fr;gap:12px}.num{width:32px;height:32px;font-size:.9rem}.overview{margin-bottom:30px}.overview a{font-size:.82rem}.step{padding:28px 0 34px}.languages a{padding:6px 8px}header .wrap{min-height:70px;gap:10px}.support{padding:20px}footer a{margin-left:0;margin-right:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}