:root{--paper: #f3f5fb;--card: #ffffff;--surface: #f7f9ff;--ink: #1b2437;--ink-soft: #5b6579;--ink-faint: #8a93a8;--line: #e4e8f2;--line-strong: #cfd6e6;--brand: #365dff;--brand-deep: #243a9b;--brand-soft: #eef3ff;--accent: var(--brand);--accent-deep: var(--brand-deep);--accent-soft: var(--brand-soft);--ok: #169b62;--ok-soft: #e5f6ee;--warn: #d89000;--warn-soft: #fdf3e0;--danger: #df3b47;--danger-soft: #fdecee;--price: #f5a623;--font-display: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;--font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;--font-mono: "IBM Plex Mono", "Cascadia Mono", Consolas, monospace;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--shadow-sm: 0 1px 2px rgba(27, 36, 55, .06);--shadow-md: 0 4px 16px rgba(27, 36, 55, .08);--shadow-lg: 0 12px 32px rgba(27, 36, 55, .14)}*{box-sizing:border-box}html,body,#app{width:100%;min-width:0;min-height:100%;margin:0;padding:0}body{background:var(--paper);color:var(--ink);font-family:var(--font-body);font-size:14px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}a{color:inherit;text-decoration:none}button{font-family:inherit}input,select,textarea{max-width:100%;font-family:inherit}img,video,canvas,svg{max-width:100%}.crash{max-width:560px;margin:8vh auto 0;padding:40px 44px;background:var(--card);border:1px solid var(--line);border-top:4px solid var(--accent)}.crash__code{margin:0 0 10px;font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;color:var(--accent-deep)}.crash__title{margin:0 0 12px;font-family:var(--font-display);font-size:30px;font-weight:600}.crash__detail{margin:0 0 26px;color:var(--ink-soft);font-family:var(--font-mono);font-size:12px;word-break:break-all}.crash__action{padding:10px 22px;background:var(--ink);color:var(--paper);border:none;cursor:pointer;font-size:14px;letter-spacing:.08em;transition:background .18s ease}.crash__action:hover{background:var(--accent-deep)}.page-placeholder{max-width:720px;animation:page-rise .45s ease both}.page-placeholder__kicker{margin:0 0 14px;font-family:var(--font-mono);font-size:11px;letter-spacing:.26em;color:var(--accent-deep);text-transform:uppercase}.page-placeholder__title{margin:0 0 14px;font-family:var(--font-display);font-size:40px;font-weight:600;letter-spacing:-.01em}.page-placeholder__body{margin:0 0 8px;color:var(--ink-soft)}.page-placeholder__note{margin:26px 0 0;padding:14px 18px;border-left:3px solid var(--accent);background:var(--card);border-top:1px solid var(--line);border-right:1px solid var(--line);border-bottom:1px solid var(--line);font-family:var(--font-mono);font-size:12px;color:var(--ink-soft)}@keyframes page-rise{0%{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}@media(prefers-reduced-motion:reduce){.page-placeholder{animation:none}}@media(max-width:600px){body{font-size:13px}.crash{margin:24px 12px;padding:28px 22px}.crash__title{font-size:24px}.page-placeholder__title{font-size:clamp(28px,9vw,36px)}}