.start-page{justify-content:center;align-items:center;min-height:80vh;padding:2rem;display:flex}.start-card{width:100%;max-width:520px}.start-title{text-align:center;color:var(--ink);margin-bottom:.5rem;font-size:1.8rem;font-weight:800}.start-subtitle{text-align:center;color:var(--ink-muted);margin-bottom:2rem;font-size:1rem}.start-placement-link{color:var(--primary);white-space:nowrap;text-decoration:underline}.start-levels{flex-direction:column;gap:10px;display:flex}.start-level-btn{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);cursor:pointer;text-align:left;align-items:center;gap:16px;width:100%;padding:16px 20px;transition:all .15s;display:flex}.start-level-btn:hover{background:var(--surface-sunken)}.start-level-btn.selected{background:var(--primary-tint,#e8f5f4);border:2px solid var(--primary)}.start-level-emoji{flex-shrink:0;font-size:1.5rem}.start-level-name{color:var(--ink);font-size:1rem;font-weight:700}.start-level-btn.selected .start-level-name{color:var(--primary)}.start-level-desc{color:var(--ink-muted);margin-top:2px;font-size:.85rem}.start-level-standards{color:var(--ink-subtle,#aaa);letter-spacing:.01em;margin-top:3px;font-size:.72rem}.start-level-check{color:var(--primary);margin-left:auto;font-size:1.2rem}.start-go-btn{background:var(--primary);color:#fff;border-radius:var(--radius-md);cursor:pointer;border:none;width:100%;margin-top:1.5rem;padding:14px;font-size:1rem;font-weight:700;transition:opacity .2s}.start-go-btn:disabled{background:var(--border);color:var(--ink-muted);cursor:not-allowed;opacity:.7}.start-hint{text-align:center;color:var(--ink-muted);margin-top:1rem;font-size:.85rem}[data-theme=dark] .start-level-btn{background:var(--surface);border-color:var(--border)}[data-theme=dark] .start-level-btn.selected{background:#0b6e6b26}