:root{--bg:#f6f3ee;--ink:#1c2434;--accent:#c45c26;--card:#fff;--muted:#6b7280}*{box-sizing:border-box}body,html{margin:0;padding:0;min-height:100%;background:linear-gradient(165deg,#f6f3ee,#e8eef5 55%,#f6f3ee);color:var(--ink);font-family:PingFang SC,Hiragino Sans GB,Noto Sans SC,system-ui,sans-serif}main{max-width:480px;margin:0 auto;padding:24px 16px 48px}h1{font-size:1.5rem;margin:0 0 8px;letter-spacing:.02em}.sub{color:var(--muted);margin:0 0 24px;font-size:.95rem}.card{background:var(--card);border-radius:16px;padding:16px;margin-bottom:12px;box-shadow:0 8px 24px rgba(28,36,52,.06)}.card h2{margin:0 0 6px;font-size:1.1rem}.card p{margin:0 0 12px;color:var(--muted);font-size:.9rem;line-height:1.45}.price{font-weight:700;color:var(--accent);margin-right:8px}button.buy{width:100%;border:0;border-radius:999px;padding:12px 16px;background:var(--accent);color:#fff;font-size:1rem;font-weight:600}button.buy:disabled{opacity:.55}.status{text-align:center;padding:48px 16px;color:var(--muted)}.error{color:#b42318;background:#fef3f2}.error,.success{border-radius:12px;padding:12px;margin-bottom:16px}.success{color:#027a48;background:#ecfdf3}