:root{--bg: #f7f7f8;--card: #ffffff;--ink: #1a1a1e;--muted: #6b6b76;--line: #e4e4e9;--accent: #2f6df6;--error: #c0362c;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink)}*{box-sizing:border-box}body{margin:0;background:var(--bg)}.app__header{display:flex;align-items:baseline;gap:.5rem;padding:1rem 1.5rem;border-bottom:1px solid var(--line);background:var(--card)}.app__brand{font-weight:700}.app__sub{color:var(--muted);font-size:.9rem}.app__main{max-width:760px;margin:0 auto;padding:1.5rem}.stack{display:flex;flex-direction:column;gap:1.25rem}.row{display:flex;align-items:center;gap:.75rem}.row--between{justify-content:space-between}.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:1.25rem}.card--narrow{max-width:380px;margin:3rem auto}.form{display:flex;flex-direction:column;gap:.75rem}.form--grid{display:grid;grid-template-columns:1fr 1fr;gap:.75rem}.field{display:flex;flex-direction:column;gap:.25rem;font-size:.85rem;color:var(--muted)}.field input{padding:.5rem .6rem;border:1px solid var(--line);border-radius:8px;font-size:1rem;color:var(--ink)}.btn{cursor:pointer;border:0;border-radius:8px;padding:.55rem .9rem;font-size:.95rem}.btn--primary{background:var(--accent);color:#fff}.btn--primary:disabled{opacity:.6;cursor:default}.btn--link{background:none;color:var(--accent);padding:.25rem 0}.form--grid .btn--primary{grid-column:1 / -1}.list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.5rem}.list__item{display:flex;flex-direction:column;gap:.15rem;padding:.75rem 1rem;background:var(--card);border:1px solid var(--line);border-radius:10px}.link{color:var(--accent);text-decoration:none;font-weight:600}.link:hover{text-decoration:underline}select{padding:.35rem .5rem;border:1px solid var(--line);border-radius:8px;font-size:.9rem;color:var(--ink);background:var(--card)}.muted{color:var(--muted);font-size:.9rem}.error{color:var(--error);font-size:.9rem;margin:0}h1{font-size:1.4rem;margin:0}h2{font-size:1.1rem;margin:0 0 .75rem}