:root{--ink:#1a1612;--ink-soft:#3d342c;--ink-muted:#7a6f64;--ivory:#f7f3ec;--ivory-deep:#ebe4d8;--paper:#fffdf9;--gold:#c9a227;--gold-bright:#e0bc4a;--gold-soft:#a8893a;--gold-glow:#c9a2272e;--danger:#b83a3a;--line:#1a16121a;--line-strong:#1a16122e;--shadow:0 1rem 2.5rem #1a161214;--radius:.75rem;--max:96rem;--font-display:"Songti SC", "STSong", "SimSun", "Noto Serif CJK SC", serif;--font-body:"PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;--header-h:3.75rem;--chat-gap:.85rem}*,:before,:after{box-sizing:border-box}html{font-size:12px}html,body{background:var(--ivory);height:100%;color:var(--ink);font-family:var(--font-body);-webkit-font-smoothing:antialiased;margin:0;line-height:1.55}body{font-size:1.1667rem}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit;color:inherit}img{max-width:100%;display:block}#app{height:100%;min-height:100%}.container{width:min(100% - 2.5rem, var(--max));margin-inline:auto}.btn{appearance:none;cursor:pointer;border:1px solid #0000;border-radius:999px;padding:.55rem 1.1rem;transition:transform .2s,background .2s,border-color .2s,color .2s}.btn:disabled{opacity:.45;cursor:not-allowed}.btn-primary{background:linear-gradient(135deg, var(--gold-bright), var(--gold));color:var(--ink);font-weight:600}.btn-primary:hover:not(:disabled){transform:translateY(-1px)}.btn-ghost{border-color:var(--line-strong);color:var(--ink);background:0 0}.btn-ghost:hover:not(:disabled){border-color:var(--gold);color:var(--gold-soft)}.btn-ink{background:var(--ink);color:var(--ivory)}.btn-ink:hover:not(:disabled){background:#2a241e}.price{font-family:var(--font-display);letter-spacing:.02em;font-weight:600}.toast-host{z-index:9999;pointer-events:none;flex-direction:column;gap:.5rem;display:flex;position:fixed;top:1.5rem;left:50%;transform:translate(-50%)}.toast{background:var(--ink);color:var(--ivory);box-shadow:var(--shadow);border-radius:999px;padding:.55rem 1rem;font-size:1.083rem;animation:.25s toast-in}.toast.error{background:var(--danger)}@keyframes toast-in{0%{opacity:0;transform:translateY(-.5rem)}to{opacity:1;transform:translateY(0)}}@keyframes rise{0%{opacity:0;transform:translateY(.85rem)}to{opacity:1;transform:translateY(0)}}.rise{animation:.55s both rise}