:root{--bg: #f5f7fb;--surface: #ffffff;--surface-muted: #f1f4f9;--text: #1b2430;--text-soft: #4f5e72;--border: #d8dfeb;--brand: #1f6feb;--brand-strong: #0f4fb8;--danger: #8f2d2d;--danger-bg: #fff4f4;--focus: #ff9c2f;--shadow: 0 8px 26px rgba(18, 35, 64, .08)}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%}body{font-family:Segoe UI,Helvetica Neue,Arial,sans-serif;background:linear-gradient(180deg,#f7f9fc,#eef3f9);color:var(--text);line-height:1.6}.skip-link{position:absolute;left:10px;top:-48px;background:var(--surface);color:var(--text);padding:8px 12px;border-radius:8px;border:1px solid var(--border);z-index:1000}.skip-link:focus{top:10px}.container{width:min(1080px,calc(100% - 32px));margin:0 auto}.hero{border-bottom:1px solid var(--border);background:radial-gradient(circle at 8% 10%,#e9f0ff,#f7f9fc 42%,#f7f9fc);padding:28px 0 26px}.eyebrow{margin:0;color:var(--brand-strong);font-size:.92rem;font-weight:700;letter-spacing:.02em}h1,h2,h3{line-height:1.25;margin-top:0}h1{margin:8px 0 10px;font-size:clamp(1.8rem,3.5vw,2.3rem)}h2{margin-bottom:8px;font-size:clamp(1.3rem,2.2vw,1.6rem)}h3{margin-bottom:10px;font-size:1.08rem}.hero__lead{max-width:70ch;margin-top:0;color:var(--text-soft)}.hero__notice{margin:0;max-width:78ch;padding:10px 12px;border:1px solid #f3d5a4;border-radius:10px;background:#fff7ea;color:#5d431e;font-size:.95rem}.nav-list{list-style:none;margin:18px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:10px}.nav-list a{display:inline-block;padding:8px 12px;border:1px solid var(--border);border-radius:999px;color:var(--text);text-decoration:none;background:var(--surface);font-size:.95rem}.nav-list a:hover{border-color:var(--brand);color:var(--brand-strong)}.section{padding:26px 0}.section__header p{margin:0;color:var(--text-soft)}.grid{margin-top:16px;display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:14px}.card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:16px;box-shadow:var(--shadow)}.card--danger{border-color:#f0c9c9;background:var(--danger-bg)}.card p,.card li{color:var(--text-soft)}.flow-list{margin:0;padding-left:18px}pre{white-space:pre-wrap;margin:8px 0 0;background:var(--surface-muted);border:1px solid var(--border);border-radius:10px;padding:10px;color:#21324a;font-size:.9rem}button{margin-top:10px;border:1px solid var(--brand);background:var(--brand);color:#fff;border-radius:10px;padding:8px 12px;font-size:.92rem;cursor:pointer}button:hover{background:var(--brand-strong)}button:disabled{opacity:.6;cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--focus);outline-offset:2px}textarea:focus-visible{outline:3px solid var(--focus);outline-offset:2px}.hint{margin-top:0}.practice-card__top{display:flex;align-items:center;justify-content:space-between;gap:10px}.checkbox-label{display:inline-flex;align-items:center;gap:7px;color:var(--text-soft);font-size:.92rem}.progress{border:1px solid var(--border);border-radius:14px;padding:12px;background:var(--surface);box-shadow:var(--shadow)}.progress__meta{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;color:var(--text-soft)}.progress__bar{margin-top:10px;background:#dbe4f2;border-radius:999px;overflow:hidden;height:10px}.progress__fill{height:100%;background:linear-gradient(90deg,#2e7cf0,#1f6feb);width:0;transition:width .18s ease}.resource-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}.resource-list a{color:var(--brand-strong);text-decoration:none;font-weight:600}.resource-list a:hover{text-decoration:underline}.comment-form{display:grid;gap:8px}.comment-form input,.comment-form textarea{width:100%;border:1px solid var(--border);border-radius:10px;padding:10px 12px;font:inherit;color:var(--text);background:var(--surface)}.comment-form textarea{resize:vertical}.comment-form__actions{display:flex;justify-content:flex-start}.comment-list{margin-top:14px;display:grid;gap:12px}.comment-item__meta{display:flex;justify-content:space-between;gap:10px;align-items:baseline;margin-bottom:8px}.comment-item__meta time{color:var(--text-soft);font-size:.88rem}.comment-status{margin-top:10px}.comment-status--error{color:var(--danger)}@media (max-width: 720px){.container{width:min(1080px,calc(100% - 22px))}.hero{padding-top:20px}.section{padding:20px 0}.practice-card__top{flex-direction:column;align-items:flex-start}}