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(width<=620px){.app-header__inner{flex-wrap:wrap;padding-bottom:8px}.app-main{padding:12px 0}.app-nav{scrollbar-width:none;order:3;width:100%;overflow-x:auto}.app-nav::-webkit-scrollbar{display:none}.app-nav__link{align-items:center;min-height:40px;display:inline-flex}.brand__text i{display:none}}:root{--gd-ink:#101827;--gd-paper:#fffaf0;--gd-gold:#ffc93c;--gd-coral:#ff665a;--gd-mint:#57e3bd;--bg-page:#101827;--bg-panel:#182536;--bg-panel-elevated:#223448;--bg-felt:#17483d;--bg-felt-dark:#0e302c;--bg-card:#fffaf0;--bg-sheet:#faf8f2;--text-on-dark:#f8fafc;--text-subtle-on-dark:#bac9d5;--text-on-light:#17212c;--text-muted-on-light:#536171;--accent-primary:#ffc93c;--accent-success:#57e3bd;--accent-error:#c83b43;--suit-red:#c52f38;--suit-black:#17212c;--border-light:#d5d9dc;--border-dark:#3a5562;--border-subtle-dark:#94a3b842;--border-subtle-light:#17212c1f;--radius-xs:4px;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-sheet:20px;--shadow-card:0 2px 7px #0000002e;--shadow-sheet:0 -8px 26px #00000038;--shadow-panel:0 10px 28px #00000042;--duration-quick:.12s;--duration-ui:.18s;--duration-play:.2s;--ease-standard:cubic-bezier(.2, 0, .2, 1);--max-content:960px;--header-height:52px;--touch-min:44px;--font-sans:-apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", "WenQuanYi Micro Hei", sans-serif;--font-mono:ui-monospace, "SFMono-Regular", Menlo, Consolas, "Cascadia Mono", "Noto Sans SC", monospace;--fs-caption:12px;--fs-note:14px;--fs-body:16px;--fs-lead:18px;--fs-question:21px;--fs-score:32px;--fs-display:40px;--lh-tight:1.25;--lh-body:1.6;--lh-loose:1.75}@media (prefers-reduced-motion:reduce){:root{--duration-quick:0s;--duration-ui:0s;--duration-play:0s}}*,:before,:after{box-sizing:border-box}html{background:var(--bg-page);-webkit-text-size-adjust:100%}body{background:var(--bg-page);min-height:100dvh;color:var(--text-on-dark);font-family:var(--font-sans);font-size:var(--fs-body);line-height:var(--lh-body);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;overscroll-behavior-y:none;margin:0}h1,h2,h3,h4{font-weight:700;line-height:var(--lh-tight);letter-spacing:-.01em;margin:0}p{margin:0}ul,ol{margin:0;padding:0;list-style:none}button{font:inherit;color:inherit;cursor:pointer;background:0 0;border:0}a{color:var(--accent-primary);text-decoration:none}a:hover{text-decoration:underline}.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}:focus-visible{outline:3px solid var(--accent-primary);outline-offset:2px;border-radius:var(--radius-xs)}.sr-only{clip-path:inset(50%);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.skip-link{z-index:100;border-radius:var(--radius-sm);background:var(--accent-primary);color:var(--gd-ink);padding:10px 14px;font-weight:700;position:absolute;top:8px;left:8px;transform:translateY(-160%)}.skip-link:focus{transform:none}.app-shell{flex-direction:column;min-height:100dvh;display:flex}.container{width:100%;max-width:var(--max-content);margin:0 auto;padding:0 16px}.stack{flex-direction:column;gap:14px;display:flex}.stack-sm{flex-direction:column;gap:8px;display:flex}.row{align-items:center;gap:10px;display:flex}.row-between{justify-content:space-between;align-items:center;gap:10px;display:flex}.spacer{flex:1}.eyebrow{letter-spacing:.18em;text-transform:uppercase;color:var(--text-subtle-on-dark);font-size:11px;font-weight:700}.page-title{font-size:26px;font-weight:700}.section-title{font-size:var(--fs-lead);font-weight:700}.muted{color:var(--text-subtle-on-dark)}.muted-light{color:var(--text-muted-on-light)}.note{font-size:var(--fs-note);line-height:var(--lh-loose);color:var(--text-subtle-on-dark)}.caption{font-size:var(--fs-caption);line-height:var(--lh-body);color:var(--text-subtle-on-dark)}.strong{color:var(--text-on-dark);font-weight:700}.btn{min-height:var(--touch-min);border-radius:var(--radius-md);font-size:var(--fs-body);text-align:center;transition:transform var(--duration-quick) var(--ease-standard), background-color var(--duration-quick) var(--ease-standard);touch-action:manipulation;justify-content:center;align-items:center;gap:8px;padding:11px 20px;font-weight:700;display:inline-flex}.btn:active:not(:disabled){transform:translateY(1px)}.btn:disabled{cursor:not-allowed;opacity:.42;transform:none}.btn-primary{background:var(--accent-primary);color:var(--gd-ink)}.btn-primary:hover:not(:disabled){background:#ffd666}.btn-secondary{border:2px solid var(--border-dark);color:var(--text-on-dark);background:0 0}.btn-secondary:hover:not(:disabled){border-color:var(--text-subtle-on-dark);background:var(--bg-panel)}.btn-ghost{border-radius:var(--radius-sm);min-height:40px;color:var(--text-subtle-on-dark);font-size:var(--fs-note);padding:8px 12px;font-weight:600}.btn-ghost:hover:not(:disabled){color:var(--text-on-dark);background:var(--bg-panel)}.btn-danger{border:2px solid var(--accent-error);color:#ff9aa0;background:0 0}.btn-block{width:100%}.panel{border:1px solid var(--border-subtle-dark);border-radius:var(--radius-lg);background:var(--bg-panel);padding:18px}.panel-quiet{border:1px dashed var(--border-dark);border-radius:var(--radius-lg);padding:16px}.sheet-light{border-radius:var(--radius-sheet);background:var(--bg-sheet);color:var(--text-on-light);box-shadow:var(--shadow-sheet)}.sheet-light h2,.sheet-light h3{color:var(--text-on-light)}.chip{border:1px solid var(--border-dark);font-size:var(--fs-caption);color:var(--text-subtle-on-dark);white-space:nowrap;border-radius:999px;align-items:center;gap:6px;padding:4px 9px;font-weight:600;display:inline-flex}.chip-accent{border-color:var(--accent-primary);color:var(--accent-primary)}.chip-success{border-color:var(--accent-success);color:var(--accent-success)}.chip-error{border-color:var(--accent-error);color:#ff9aa0}.field{flex-direction:column;gap:6px;display:flex}.field>label{font-size:var(--fs-note);font-weight:700}.input{min-height:var(--touch-min);border:2px solid var(--border-light);border-radius:var(--radius-sm);width:100%;color:var(--text-on-light);font-size:var(--fs-body);font-variant-numeric:tabular-nums;background:#fff;padding:10px 12px}.input:focus-visible{outline:3px solid var(--accent-primary);outline-offset:1px}.sheet-backdrop{z-index:60;background:#030712b8;justify-content:center;align-items:flex-end;padding:0;display:flex;position:fixed;inset:0}.sheet-body{overscroll-behavior:contain;width:100%;max-width:560px;max-height:calc(100dvh - 24px);padding:20px 18px calc(20px + env(safe-area-inset-bottom));border-radius:var(--radius-sheet) var(--radius-sheet) 0 0;background:var(--bg-sheet);color:var(--text-on-light);box-shadow:var(--shadow-sheet);animation:sheet-rise var(--duration-ui) var(--ease-standard);--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;overflow-y:auto}.sheet-body .eyebrow{color:var(--text-muted-on-light)}.sheet-body .btn-secondary{border-color:var(--border-light);color:var(--text-on-light);background:0 0}.sheet-body .btn-secondary:hover:not(:disabled){border-color:var(--text-muted-on-light);background:var(--border-subtle-light)}.sheet-body .btn-ghost{color:var(--text-muted-on-light)}.sheet-body .btn-ghost:hover:not(:disabled){color:var(--text-on-light);background:var(--border-subtle-light)}.sheet-body .chip{border-color:var(--border-light);color:var(--text-muted-on-light)}.sheet-body .chip-accent,.sheet-body .chip-success{color:var(--text-on-light)}.sheet-body .chip-error{color:var(--accent-error)}@media (width>=640px){.sheet-backdrop{align-items:center;padding:24px}.sheet-body{border-radius:var(--radius-sheet)}}@keyframes sheet-rise{0%{opacity:.6;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.divider{background:var(--border-subtle-dark);border:0;height:1px;margin:0}.divider-light{background:var(--border-subtle-light);border:0;height:1px;margin:0}.site-footer{padding:22px 0 calc(22px + env(safe-area-inset-bottom));border-top:1px solid var(--border-subtle-dark);font-size:var(--fs-caption);color:var(--text-subtle-on-dark);margin-top:auto}.site-footer nav{flex-wrap:wrap;gap:14px;display:flex}.site-footer a{color:var(--text-subtle-on-dark);font-weight:600}.site-footer a:hover{color:var(--accent-primary)}