:root{color:#172033;--surface:#fff;--text:#172033;--secondary:#5b6472;--primary:#165dff;--error:#b42318;--border:#d7dee8;--focus:#6d28d9;background:#f6f7f9;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;font-size:16px;line-height:1.5}*{box-sizing:border-box}body{min-width:320px;color:var(--text);background:#f6f7f9;margin:0}button,input,select{font:inherit;min-height:44px}button:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible,[tabindex="-1"]:focus-visible,[data-page-heading]:focus-visible{outline:3px solid var(--focus);outline-offset:2px}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}.app-shell{width:min(100%,720px);margin:0 auto;padding:24px 16px 32px}.brand{margin:0 0 24px;font-size:1.125rem;font-weight:700}.phase-banner,.surface,.hold-notice{background:var(--surface);border:1px solid var(--border);border-radius:16px;margin-bottom:16px;padding:24px}.phase-banner h2,.surface h2,.surface 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