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8px;gap:12px}.contact-success[hidden]{display:none}.contact-success__icon{font-size:3rem;line-height:1}.contact-success__title{font-size:1.4rem;font-weight:700;color:var(--text-primary);margin:0}.contact-success__msg{color:var(--text-secondary);font-size:.9375rem;margin:0;line-height:1.6}:root{--bg-primary:#0a0e14;--bg-secondary:#121620;--bg-card:#181e28;--bg-hover:#1e2633;--accent:#39bae6;--accent-glow:rgba(57,186,230,0.25);--accent2:#95e6cb;--color-ds:#39bae6;--color-co:#ff8f40;--color-os:#a277ff;--color-cn:#95e6cb;--text-primary:#e2e8f0;--text-secondary:#8899a9;--text-muted:#7a8896;--border-color:#232a35;--border-light:#2a3240;--font-display:-apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;--font-body:-apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;--font-mono:ui-monospace, 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rgba(0,0,0,0.25);--primary:var(--accent);--border:var(--border-color);--code-bg:var(--bg-secondary);--code-inline-bg:rgba(57,186,230,0.1);--table-header-bg:var(--bg-secondary);--table-row-alt:rgba(255,255,255,0.02);--tag-bg:rgba(57,186,230,0.1);--tag-border:rgba(57,186,230,0.15);--answer-color:#ff6b6b}:root[data-theme=light]{--bg-primary:#ffffff;--bg-secondary:#f0f3f8;--bg-card:#ffffff;--bg-hover:#eef2f7;--accent:#1a72c4;--accent-glow:rgba(26,114,196,0.18);--accent2:#0f9d8a;--color-ds:#1a72c4;--color-co:#e0761a;--color-os:#7a3ff0;--color-cn:#0f9d8a;--text-primary:#1f2a38;--text-secondary:#44566a;--text-muted:#66788a;--border-color:#dde3ed;--border-light:#c8d2df;--shadow-card:0 2px 12px rgba(15,23,42,0.08);--primary:var(--accent);--border:var(--border-color);--code-bg:#f0f3f8;--code-inline-bg:rgba(26,114,196,0.08);--table-header-bg:#eef2f7;--table-row-alt:#f7f9fc;--tag-bg:rgba(26,114,196,0.08);--tag-border:rgba(26,114,196,0.2);--answer-color:#d7322a}:root[data-theme=light] .navbar{background:#fff;border-bottom:1px solid var(--border-color);box-shadow:none!important;backdrop-filter:none!important;-webkit-backdrop-filter:none!important}@media(min-width:769px){:root[data-theme=light] .navbar-links{background:0 0}}:root[data-theme=light] .site-footer{background:var(--bg-secondary)}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-body);font-size:var(--fs-body);line-height:1.75;color:var(--text-primary);background:var(--bg-primary);-webkit-font-smoothing:antialiased}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:700;line-height:1.25;letter-spacing:-.01em}h1{font-size:var(--fs-h1);margin-bottom:1.5rem}h2{font-size:var(--fs-h2);margin-top:3rem;margin-bottom:1rem;padding-bottom:.5rem;border-bottom:1px solid 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