@import url("tutorial-dark.css?v=20260910-1");
:root{--ink:#172033;--muted:#657186;--paper:#f5f2eb;--panel:#fff;--soft:#f4f6f9;--line:#dce2eb;--orange:#e69b43;--blue:#172f4e;--green:#2c7d5e;--danger:#ad514c;--code:#111827;--code-ink:#dce8f8}*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:var(--paper);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}button,input,textarea,select{font:inherit}.boot{display:grid;place-items:center;min-height:100vh;color:var(--muted)}.tutorial-shell{width:min(1480px,100%);margin:auto;padding:20px}.tutorial-topbar{display:flex;align-items:center;gap:18px;padding:12px 16px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.92);box-shadow:0 12px 40px rgba(26,39,64,.07);position:sticky;top:10px;z-index:10;backdrop-filter:blur(14px)}.tutorial-brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none}.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--orange);color:white;font-weight:900}.tutorial-brand b,.tutorial-brand small{display:block}.tutorial-brand small{font-size:.59rem;letter-spacing:.12em;color:var(--muted)}.tutorial-progress{display:flex;align-items:center;gap:10px;margin-left:auto;color:var(--muted);font-size:.75rem}.progress-track{width:130px;height:6px;border-radius:99px;background:#e6eaf0;overflow:hidden}.progress-track span{display:block;height:100%;background:var(--orange)}.back-link{padding:8px 10px;color:var(--muted);text-decoration:none;font-size:.78rem}.lesson-hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(250px,.45fr);gap:40px;padding:62px 22px 38px}.eyebrow{color:#b56d23;font-size:.69rem;font-weight:850;letter-spacing:.13em;text-transform:uppercase}.lesson-hero h1{max-width:850px;margin:10px 0 13px;font-size:clamp(2.3rem,5vw,4.8rem);line-height:.98;letter-spacing:-.045em}.lesson-lede{max-width:760px;margin:0;color:var(--muted);font-size:1.08rem;line-height:1.68}.lesson-goal{align-self:end;padding:22px;border-left:3px solid var(--orange);background:rgba(255,255,255,.55)}.lesson-goal b{display:block;margin-bottom:8px}.lesson-goal p{margin:0;color:var(--muted);line-height:1.55}.lesson-explain{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:0 0 20px}.explain-card{padding:25px;border:1px solid var(--line);border-radius:20px;background:var(--panel)}.explain-card h2{margin:7px 0 10px;font-size:1.25rem}.explain-card p,.benefit-list{margin:0;color:var(--muted);line-height:1.65}.benefit-list{padding-left:19px}.process{margin:0 0 26px;padding:28px;border:1px solid var(--line);border-radius:22px;background:var(--blue);color:white}.process h2{margin:7px 0 22px}.process-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:10px;counter-reset:process}.process-step{position:relative;padding:16px 14px 16px 46px;border:1px solid rgba(255,255,255,.14);border-radius:13px;color:#d8e3f1;font-size:.86rem;line-height:1.5;counter-increment:process}.process-step:before{content:counter(process,decimal-leading-zero);position:absolute;left:14px;color:#f0ae60;font-weight:800}.lab{overflow:hidden;border:1px solid var(--line);border-radius:24px;background:var(--panel);box-shadow:0 20px 65px rgba(28,39,62,.08)}.lab-toolbar{display:flex;align-items:center;min-height:54px;padding:0 15px;border-bottom:1px solid var(--line);background:#fff}.code-tabs{display:flex;gap:4px}.code-tab,.mobile-run-toggle{padding:8px 12px;border:0;border-radius:9px;background:transparent;color:var(--muted);font-size:.76rem;font-weight:800;cursor:pointer}.code-tab.is-active{background:#fff1e1;color:#aa631e}.mobile-run-toggle{display:none;margin-left:auto;background:var(--orange);color:white}.lab-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(390px,.95fr);min-height:620px}.code-pane{min-width:0;background:var(--code)}.code-file{display:none;height:100%}.code-file.is-active{display:block}.code-file pre{height:100%;min-height:620px;margin:0;padding:24px;overflow:auto;color:var(--code-ink);font:13px/1.68 ui-monospace,SFMono-Regular,Consolas,monospace;white-space:pre}.run-pane{min-width:0;padding:27px;background:linear-gradient(145deg,#f8fafc,#eef2f6)}.run-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:15px;margin-bottom:22px}.run-heading h2{margin:5px 0 0;font-size:1.35rem}.live-pill{padding:6px 9px;border-radius:99px;background:#ddf2e8;color:var(--green);font-size:.67rem;font-weight:850;letter-spacing:.08em}.demo-card{padding:22px;border:1px solid var(--line);border-radius:17px;background:white}.demo-card+.demo-card{margin-top:14px}.demo-card h3{margin:0 0 6px}.demo-card p{margin:0 0 15px;color:var(--muted);font-size:.85rem;line-height:1.55}.demo-form{display:grid;gap:10px}.demo-form label{color:var(--muted);font-size:.7rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.demo-input,.demo-textarea,.demo-select{width:100%;padding:12px 13px;border:1px solid var(--line);border-radius:10px;background:#fbfcfe;color:var(--ink)}.demo-textarea{min-height:92px;resize:vertical}.demo-button{justify-self:start;padding:11px 15px;border:0;border-radius:10px;background:var(--orange);color:white;font-weight:800;cursor:pointer}.demo-button.secondary{background:var(--blue)}.demo-button:disabled{opacity:.55;cursor:wait}.demo-output{min-height:90px;margin-top:14px;padding:14px;border-radius:12px;background:#111827;color:#dce8f8;font:12px/1.55 ui-monospace,monospace;white-space:pre-wrap;overflow-wrap:anywhere}.demo-preview{padding:24px;border-radius:15px;background:linear-gradient(135deg,#162f4d,#295579);color:white}.demo-preview h3{font-size:1.6rem;margin:0 0 8px}.demo-preview p{color:#d7e5f4;margin:0}.demo-note{margin-top:14px;color:var(--muted);font-size:.75rem;line-height:1.5}.lesson-footer{display:flex;justify-content:space-between;align-items:center;padding:35px 5px 20px}.lesson-footer a{color:var(--ink);font-weight:750;text-decoration:none}.lesson-footer a:last-child{padding:11px 14px;border-radius:10px;background:var(--orange);color:white}.pubkey{font-family:ui-monospace,monospace;overflow-wrap:anywhere}.status-ok{color:var(--green)}.status-error{color:var(--danger)}
@media(max-width:760px){.tutorial-shell{padding:10px}.tutorial-topbar{top:5px}.tutorial-progress{display:none}.lesson-hero{grid-template-columns:1fr;gap:22px;padding:42px 8px 26px}.lesson-goal{align-self:auto}.lesson-explain{grid-template-columns:1fr}.process{padding:22px 16px}.process-list{grid-template-columns:1fr}.lab{border-radius:18px}.mobile-run-toggle{display:block}.lab-grid{display:block;min-height:590px}.code-pane,.run-pane{min-height:590px}.code-file pre{min-height:590px;padding:18px;font-size:12px}.run-pane{display:none;padding:17px}.lab.show-run .code-pane{display:none}.lab.show-run .run-pane{display:block}.lesson-footer{gap:13px;font-size:.77rem}.back-link{display:none}.tutorial-brand span:last-child{display:none}}