:root{--bg:#f3f6f8;--band:#e3eef3;--surface:#fff;--text:#24343c;--muted:#5c6f7a;--heading:#10242e;--line:#d5e0e6;--accent:#0b4f6c;--accent-strong:#08384d;--sand:#f8f3ea;--sand-line:#e2d3b8;--danger:#8d2f2f;--danger-bg:#fdeeee;--ok:#0f6b45;--ok-bg:#e8f6ee;--warn:#8a5a12;--warn-bg:#fff6e8;--button:#0b4f6c;--button-text:#fff;--shadow:0 18px 40px #10242e14;--sans:"Segoe UI", system-ui, sans-serif;--serif:"Iowan Old Style", Palatino, Georgia, serif;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;font:17px/1.5 var(--sans);color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--bg:#10181c;--band:#17303a;--surface:#182328;--text:#e5eef2;--muted:#a9bac3;--heading:#f4fafc;--line:#31454e;--accent:#8ecae0;--accent-strong:#d4eef6;--sand:#2a261f;--sand-line:#5c5140;--danger:#ffb4b0;--danger-bg:#3a2224;--ok:#9be0bf;--ok-bg:#173328;--warn:#f0cf9a;--warn-bg:#332816;--button:#8ecae0;--button-text:#08242e;--shadow:0 18px 40px #00000059}}*,:before,:after{box-sizing:border-box}body{background:linear-gradient(180deg, var(--band) 0 240px, var(--bg) 240px);min-height:100svh;margin:0}#root{min-height:100svh}h1,h2{font-family:var(--serif);color:var(--heading);letter-spacing:-.03em;font-weight:600}h1{margin:0;font-size:clamp(2rem,5vw,3.25rem);line-height:1.1}h2{margin:0 0 8px;font-size:1.75rem;line-height:1.2}p{margin:0}code{background:color-mix(in srgb, var(--accent) 12%, var(--surface));border-radius:6px;padding:.1em .35em;font-family:ui-monospace,Consolas,monospace;font-size:.92em}button,input{font:inherit}:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.focus-heading:focus{outline:none}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important}}.page{width:min(720px,100% - 32px);margin:0 auto;padding:40px 0 72px}.page-header{margin-bottom:28px}.brand{color:var(--accent);letter-spacing:.14em;text-transform:uppercase;margin-bottom:10px;font-size:.82rem;font-weight:700}.lede{max-width:38rem;color:var(--muted);margin-top:14px}.steps{gap:18px;margin:0 0 18px;padding:0;list-style:none;display:flex}.steps li{color:var(--muted);align-items:center;gap:8px;font-size:.95rem;display:flex}.steps li.is-current{color:var(--heading);font-weight:600}.steps li.is-done{color:var(--accent)}.step-index{background:var(--line);width:1.7rem;height:1.7rem;color:var(--heading);border-radius:999px;place-items:center;font-size:.85rem;font-weight:700;display:grid}.steps li.is-current .step-index,.steps li.is-done .step-index{background:var(--accent);color:var(--button-text)}.card{border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow);border-radius:22px;padding:28px}.section-copy{color:var(--muted);margin-bottom:16px}.player-host{aspect-ratio:16/9;background:#07141a;border-radius:14px;width:100%;position:relative;overflow:hidden}.player-host iframe,.instruction-video{background:#07141a;border:0;width:100%;height:100%;position:absolute;inset:0}.watch-meter{background:var(--line);border-radius:999px;height:8px;margin-top:16px;overflow:hidden}.watch-meter span{border-radius:inherit;background:var(--accent);height:100%;display:block}.meter-label{color:var(--muted);font-size:.92rem}.hint{color:var(--muted);margin-top:8px;font-size:.92rem}.meter-row{justify-content:space-between;align-items:center;gap:12px;margin-top:8px;display:flex}.speed{color:var(--muted);align-items:center;gap:8px;font-size:.92rem;display:flex}.speed select{border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:8px;padding:.3rem .45rem}.note{border-left:4px solid var(--sand-line);background:var(--sand);color:var(--heading);border-radius:12px;margin-bottom:20px;padding:14px 16px}.field{flex-direction:column;gap:8px;display:flex}.field label{color:var(--heading);font-weight:600}.field input{border:1px solid var(--line);background:var(--surface);width:100%;color:var(--text);border-radius:12px;padding:.8rem .9rem}.field input[aria-invalid=true]{border-color:var(--danger)}.actions{flex-wrap:wrap;gap:10px;margin-top:18px;display:flex}.button{appearance:none;background:var(--button);color:var(--button-text);cursor:pointer;border:0;border-radius:999px;padding:.85rem 1.25rem;font-weight:700}.button:hover:not(:disabled){background:var(--accent-strong)}.button:disabled{cursor:not-allowed;opacity:.45}.button-secondary{color:var(--accent-strong);box-shadow:inset 0 0 0 1.5px var(--accent);background:0 0}.button-secondary:hover:not(:disabled){background:color-mix(in srgb, var(--accent) 12%, transparent)}.status{overflow-wrap:anywhere;border-radius:12px;margin-top:14px;padding:12px 14px}.status-ok{background:var(--ok-bg);color:var(--ok)}.status-warn{background:var(--warn-bg);color:var(--warn)}.status-error{background:var(--danger-bg);color:var(--danger)}@media (width<=640px){.page{width:min(100% - 24px,720px);padding-top:28px}.card{padding:20px}.actions,.button{width:100%}}