:root{color-scheme:light;font-family:IBM Plex Sans,Segoe UI,sans-serif;background:radial-gradient(circle at top,rgba(226,241,255,.9),transparent 34%),linear-gradient(180deg,#f5f7fb,#edf2f7);color:#0f172a}*{box-sizing:border-box}body{margin:0;min-height:100vh}.app-shell{min-height:100vh;padding:16px 16px calc(100px + env(safe-area-inset-bottom))}.screen{display:flex;flex-direction:column;gap:16px}.screen--stack{gap:14px}.ui-card{background:#ffffffe0;border:1px solid rgba(148,163,184,.22);border-radius:20px;padding:16px;box-shadow:0 16px 40px #0f172a14;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.ui-button,.link-button{appearance:none;border:none;background:#0f172a;color:#fff;border-radius:14px;padding:12px 16px;min-height:44px;font:inherit;cursor:pointer;text-decoration:none}.ui-button:disabled{opacity:.45}.ui-input{width:100%;min-height:48px;padding:12px 14px;border-radius:14px;border:1px solid rgba(148,163,184,.4);background:#fff;font:inherit}.comment-list,.comment-card__children,.button-row,.toolbar{display:flex;flex-direction:column;gap:12px}.comment-card__children{margin-top:12px;padding-left:10px;border-left:2px solid rgba(148,163,184,.25)}.comment-card__head,.comment-card__actions,.toolbar__links{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.comment-card__body{margin:12px 0;line-height:1.45}.comment-card--muted{opacity:.78}.eyebrow{display:inline-block;margin-bottom:6px;text-transform:uppercase;letter-spacing:.08em;font-size:12px;color:#334155}.composer{display:grid;grid-template-columns:1fr auto;gap:10px}.sticky-composer{position:sticky;bottom:0;padding:8px;background:linear-gradient(180deg,#edf2f700,#edf2f7f2 35%)}@media(min-width:720px){.app-shell{max-width:760px;margin:0 auto}}