:root{--color-bg:#faf8f2;--color-bg-sunken:#f1eee3;--color-ink:#1f2b26;--color-ink-soft:#55645d;--color-ink-faint:#9aa49e;--color-teal:#2f6f63;--color-teal-deep:#24554c;--color-teal-tint:#e3efea;--color-rule:#d8d3c4;--color-hair:#e9e6da;--color-field:#fff;--color-warn:#8a5a2b;--color-danger:#a2432f;--font-serif:"Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;--font-sans:"Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;--text-xs:.8125rem;--text-sm:.875rem;--text-base:1rem;--text-md:1.0625rem;--text-lg:1.25rem;--text-h1:clamp(1.875rem, 6vw, 2.75rem);--text-h2:clamp(1.25rem, 3.5vw, 1.5rem);--leading-body:1.7;--leading-title:1.4;--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.5rem;--space-6:2rem;--space-7:3rem;--space-8:4.5rem;--width-reading:45rem;--width-wide:65rem;--radius:12px;--radius-sm:8px;--duration:.2s;--easing:ease}@media (prefers-reduced-motion:reduce){:root{--duration:0s}}
*{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%}body{font-family:var(--font-sans);background:var(--color-bg);color:var(--color-ink);font-size:var(--text-base);line-height:var(--leading-body);padding:0 20px}a{color:var(--color-teal-deep);text-underline-offset:3px;transition:color var(--duration) var(--easing);text-decoration-thickness:1px}a:hover{color:var(--color-teal)}:focus-visible{outline:2px solid var(--color-teal);outline-offset:2px;border-radius:var(--radius)}button{font:inherit;cursor:pointer}input,textarea,select{font:inherit;color:var(--color-ink)}img{max-width:100%}.container-wide{max-width:var(--width-wide);margin-inline:auto}.container-reading{max-width:var(--width-reading);margin-inline:auto}.site-nav{max-width:var(--width-wide);border-bottom:1px solid var(--color-rule);align-items:center;gap:28px;margin:0 auto;padding:18px 0 14px;display:flex}.site-nav .brand{font-family:var(--font-sans);letter-spacing:.01em;color:var(--color-ink);flex:none;font-size:20px;font-weight:800;text-decoration:none}.site-nav .brand:after{content:"";background:var(--color-teal);vertical-align:3px;border-radius:50%;width:8px;height:8px;margin-left:8px;display:inline-block}.site-nav .nav-links{display:contents}.site-nav a.nav-link{color:var(--color-ink);padding:8px 0;font-size:15px;text-decoration:none}.site-nav a.nav-link:hover{color:var(--color-teal-deep);text-decoration:underline}.site-nav a.nav-link[aria-current=page]{color:var(--color-teal-deep);text-underline-offset:6px;text-decoration:underline}.site-nav .nav-actions{align-items:center;gap:18px;display:flex}.site-nav .lang-switch{color:var(--color-ink-soft);background:0 0;border:none;padding:8px 4px;font-size:14px;text-decoration:none}.site-nav .lang-switch:hover{color:var(--color-teal-deep)}.site-nav .lang-switch[aria-current=true]{color:var(--color-teal-deep);font-weight:700}.site-nav .account-link{border:1px solid var(--color-teal);background:var(--color-teal);color:#fff;transition:background var(--duration), color var(--duration);border-radius:999px;padding:8px 18px;text-decoration:none}.site-nav .account-link:hover{background:var(--color-teal-deep);border-color:var(--color-teal-deep);color:#fff;text-decoration:none}.site-footer{max-width:var(--width-wide);margin:var(--space-8) auto 0;border-top:1px solid var(--color-rule);font-size:var(--text-xs);color:var(--color-ink-soft);flex-wrap:wrap;gap:8px 24px;padding:24px 0 40px;display:flex}.site-footer a{color:var(--color-ink-soft);font-size:var(--text-xs)}.site-footer .footer-end{margin-left:auto}.btn{background:var(--color-teal);color:#fff;border-radius:var(--radius);transition:background var(--duration) var(--easing);border:none;min-height:44px;padding:12px 26px;font-size:15px;text-decoration:none;display:inline-block}.btn:hover{background:var(--color-teal-deep);color:#fff;text-decoration:none}.btn-outline{border:1px solid var(--color-ink);color:var(--color-ink);background:0 0}.btn-outline:hover{background:var(--color-ink);color:#fff}.demo-badge{letter-spacing:.05em;color:var(--color-teal-deep);border:1px solid var(--color-teal);border-radius:var(--radius);vertical-align:2px;white-space:nowrap;margin-right:6px;padding:0 7px;font-size:12px;line-height:1.5;display:inline-block}.demo-badge:before{content:"示例"}html[lang=en] .demo-badge:before{content:"DEMO"}.status-badge{letter-spacing:.05em;border-radius:var(--radius);white-space:nowrap;padding:0 7px;font-size:12px;line-height:1.5;display:inline-block}.status-active{color:var(--color-teal-deep);border:1px solid var(--color-teal)}.status-archived{color:var(--color-warn);border:1px solid var(--color-warn)}.field label{font-size:var(--text-sm);margin-bottom:6px;display:block}.field 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#1f2b260d}.ans-layer{margin-top:24px}.ans-layer:first-child{margin-top:0}.ans-layer>h3{letter-spacing:.14em;color:var(--color-teal-deep);margin-bottom:10px;font-size:13px;font-weight:700}.ans-conclusion{font-size:17px;font-weight:700;line-height:1.75}.ans-body{max-width:42em;font-size:15.5px;line-height:1.8}.ans-steps{padding-left:22px}.ans-steps li{margin:8px 0;line-height:1.7}.key-question{background:var(--color-teal-tint);border-radius:var(--radius);margin-top:10px;padding:16px 18px}.key-question .kq-q{font-size:16px;font-weight:700;line-height:1.6}.key-question .kq-note{font-size:var(--text-xs);color:var(--color-ink-soft);margin-top:8px}.gap-box{border:1px dashed var(--color-warn);border-radius:var(--radius);background:#fbf6ec;margin-top:10px;padding:16px 18px;font-size:15px;line-height:1.75}.gap-box ul{margin-top:8px;padding-left:20px}.gap-box li{margin:6px 0}.gap-box .conflict-item{margin:10px 0}.gap-box .conflict-item .ci-source{font-weight:700}.gap-box 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16px;font-size:14px}.followup-chips button:hover{border-color:var(--color-teal);color:var(--color-teal-deep)}.update-flag{border:1px solid var(--color-teal);background:var(--color-teal-tint);border-radius:var(--radius);color:var(--color-teal-deep);flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:14px;padding:10px 14px;font-size:13.5px;font-weight:700;display:flex}.update-flag button{background:var(--color-teal);color:#fff;border:none;border-radius:999px;min-height:40px;padding:8px 16px;font-size:13px;font-weight:700}.update-flag button:hover{background:var(--color-teal-deep)}.old-answer{opacity:.85}.old-answer .ans-date{font-size:var(--text-xs);color:var(--color-ink-faint);margin-bottom:8px}.updated-card{border:1px solid var(--color-teal);border-left-width:4px}.updated-card .updated-head{letter-spacing:.1em;color:var(--color-teal-deep);margin-bottom:4px;font-size:13px;font-weight:700}.updated-card 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4px;font-size:16px}.composer input:focus{outline:none}.composer button{background:var(--color-teal);color:#fff;border-radius:var(--radius-sm);border:none;flex:none;min-height:44px;padding:13px 28px;font-size:15px;font-weight:700}.composer button:hover{background:var(--color-teal-deep)}.notify-btn{border:1px solid var(--color-teal);color:var(--color-teal-deep);background:0 0;border-radius:999px;min-height:44px;margin-top:12px;padding:9px 18px;font-size:13.5px;font-weight:700}.notify-btn:hover{background:var(--color-teal);color:#fff}.notify-btn[disabled]{border-color:var(--color-rule);color:var(--color-ink-faint);cursor:default;background:0 0}@media (max-width:640px){.site-nav{flex-wrap:wrap;gap:0 12px}.site-nav .nav-links{border-top:1px solid var(--color-rule);order:3;gap:22px;width:100%;margin-top:10px;padding-top:10px;display:flex}.site-footer .footer-end{width:100%;margin-left:0}.answer-card{padding:20px 18px 18px}.login-hint{flex-wrap:wrap}}