:root{color-scheme:light dark;--bg: #f6f7f9;--surface: #ffffff;--surface-2: #f3f4f7;--border: #eceef2;--border-strong: #dde0e6;--text: #1a1d24;--text-muted: #626873;--text-faint: #9aa0ac;--brand: #3b5bfd;--brand-ink: #2c46d6;--brand-soft: #eef1ff;--accent: #ff7a1a;--accent-soft: #fff2e8;--easy: #12a150;--medium: #d97706;--hard: #e5484d;--hot: #ff7a1a;--radius: 16px;--radius-sm: 10px;--shadow: none;--shadow-sm: 0 1px 2px rgba(23, 28, 45, .04), 0 1px 3px rgba(23, 28, 45, .06);--shadow-md: 0 2px 6px rgba(23, 28, 45, .05), 0 8px 24px rgba(23, 28, 45, .08);--maxw: 1180px;--font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "微软雅黑", "Segoe UI", "Hiragino Sans GB", sans-serif;--mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, "Microsoft YaHei", "微软雅黑", "PingFang SC", monospace}@media(prefers-color-scheme:dark){:root{--bg: #0c0e13;--surface: #16181f;--surface-2: #1d2029;--border: #262a33;--border-strong: #363b47;--text: #e8eaef;--text-muted: #9aa0ac;--text-faint: #6b7280;--brand: #7b93ff;--brand-ink: #9db0ff;--brand-soft: #191f3a;--accent: #ff9245;--accent-soft: #2a1c12;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3), 0 1px 3px rgba(0, 0, 0, .35);--shadow-md: 0 2px 8px rgba(0, 0, 0, .35), 0 10px 30px rgba(0, 0, 0, .45)}}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth;scrollbar-width:none;-ms-overflow-style:none}html::-webkit-scrollbar{width:0;height:0;display:none}body{margin:0;font-family:var(--font);background:var(--bg);color:var(--text);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}.page{min-height:100vh;display:flex;flex-direction:column}.page>main{flex:1 0 auto}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%}.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:1.5rem}.badge{display:inline-block;padding:.1em .55em;border-radius:3px;font-size:.68rem;font-weight:600;line-height:1.6;white-space:nowrap}.diff{display:inline-flex;align-items:center;gap:.34em;font-size:.75rem;color:var(--text-muted);white-space:nowrap}.diff:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--diff-c, var(--text-faint))}.diff-easy{--diff-c: var(--easy)}.diff-medium{--diff-c: var(--medium)}.diff-hard{--diff-c: var(--hard)}.badge-hot{color:#c2410c;background:var(--accent-soft);border:0}@media(prefers-color-scheme:dark){.badge-hot{color:#ffb787}}.tag{display:inline-block;padding:.05em .5em;border-radius:6px;font-size:.72rem;color:var(--text-muted);background:var(--bg);border:1px solid var(--border)}.breadcrumb{font-size:.8rem;color:var(--text-muted);margin:1.25rem 0 .5rem}.breadcrumb a{color:var(--text-muted)}.breadcrumb .sep{margin:0 .4em;color:var(--text-faint)}.grid{display:grid;gap:.75rem;grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}.card{display:block;padding:1rem 1.05rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);transition:border-color .15s ease,background-color .15s ease}.card:hover{border-color:var(--border-strong);background:var(--surface-2);text-decoration:none}.card-icon{font-size:1.15rem;filter:grayscale(.25)}.card-title{margin:.3rem 0 .15rem;font-size:.98rem;font-weight:650;letter-spacing:-.01em;color:var(--text)}.card-desc{margin:0;font-size:.78rem;color:var(--text-muted)}.card-count{display:inline-block;margin-top:.55rem;font-size:.75rem;color:var(--brand-ink);font-weight:600}.qlist{list-style:none;margin:.85rem 0 0;padding:0;border:1px solid var(--border);border-radius:6px;overflow:hidden;background:var(--surface);box-shadow:var(--shadow-sm)}.qlist li+li{border-top:1px solid var(--border)}.qitem{position:relative;display:flex;align-items:center;gap:.85rem;padding:.6rem 1.05rem;color:var(--text);transition:background-color .14s ease}.qitem:before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--dc, var(--brand));transform:scaleX(0);transform-origin:left;transition:transform .14s ease}.qitem:hover{background:var(--surface-2);text-decoration:none}.qitem:hover:before{transform:scaleX(1)}.qitem-idx{flex-shrink:0;width:1.7rem;font-family:var(--mono);font-size:.75rem;color:var(--text-faint);font-variant-numeric:tabular-nums}.qitem-title{flex:1 1 auto;font-size:13px;font-weight:500;transition:color .14s ease}.qitem:hover .qitem-title{color:var(--dc, var(--brand))}.qitem-meta{display:flex;align-items:center;gap:.7rem;flex-shrink:0}.q-freq{min-width:2.9em;text-align:center;font-size:.72rem;font-weight:600;padding:.14rem .5rem;border-radius:5px;white-space:nowrap}.freq-high{color:#c2410c;background:var(--accent-soft)}.freq-medium{color:var(--brand-ink);background:var(--brand-soft)}.freq-low{color:var(--text-muted);background:var(--surface-2)}@media(prefers-color-scheme:dark){.freq-high{color:#ffb787}}.qitem-arrow{color:var(--text-faint);font-size:1rem;line-height:1;transition:transform .14s ease,color .14s ease}.qitem:hover .qitem-arrow{color:var(--dc, var(--brand));transform:translate(2px)}@media(prefers-color-scheme:dark){.q-hot{color:#ffb787}}.prose{background:transparent;border:0;border-top:1px solid var(--border);border-radius:0;padding:1.25rem 0;box-shadow:none;font-size:.9rem;line-height:1.8}.prose h2{display:flex;align-items:center;gap:.5rem;margin-top:2.2rem;margin-bottom:.7rem;padding-bottom:.5rem;font-size:1.05rem;border-bottom:1px solid var(--border)}.prose h2:before{content:"";width:4px;height:1.05em;border-radius:2px;background:var(--dc, var(--brand))}.prose h2:first-child{margin-top:0}.prose h3{margin-top:1.5rem;margin-bottom:.5rem;font-size:.95rem;color:var(--dc, var(--brand-ink))}.prose blockquote{margin:1rem 0;padding:.7rem .95rem;border:1px solid color-mix(in srgb,var(--dc) 22%,var(--border));border-left:3px solid var(--dc, var(--brand));border-radius:8px;background:color-mix(in srgb,var(--dc) 6%,var(--surface));color:var(--text)}.prose blockquote>:first-child{margin-top:0}.prose blockquote>:last-child{margin-bottom:0}.prose a{color:var(--dc, var(--brand));text-decoration:underline;text-underline-offset:2px}.prose table{width:100%;border-collapse:collapse;margin:1rem 0;font-size:.9rem}.prose th,.prose td{border:1px solid var(--border);padding:.5rem .7rem;text-align:left}.prose th{background:var(--bg)}.prose pre{background:#0f172a;color:#e2e8f0;padding:1rem;border-radius:8px;overflow-x:auto}.prose :not(pre)>code{background:var(--bg);border:1px solid var(--border);border-radius:4px;padding:.1em .35em;font-size:.9em}.pager{display:flex;justify-content:space-between;gap:1rem;margin:1.5rem 0}.pager a{flex:1;padding:.85rem 1rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);font-size:.82rem}.pager a:hover{border-color:var(--brand);text-decoration:none}.pager .dir{display:block;font-size:.75rem;color:var(--text-muted)}.pager .next{text-align:right}.filter-btn{padding:.3rem .72rem;font-size:.78rem;border:0;border-radius:999px;background:transparent;color:var(--text-muted);cursor:pointer;transition:background-color .14s ease,color .14s ease}.filter-btn:hover{background:var(--surface-2);color:var(--text)}.filter-btn[aria-pressed=true]{background:var(--brand-soft);color:var(--brand-ink);font-weight:600}.hero{text-align:center;padding:2.25rem 1rem 1.5rem}.hero h1{font-size:1.85rem;font-weight:720;margin:0 0 .5rem;letter-spacing:-.025em}.hero p{color:var(--text-muted);max-width:640px;margin:0 auto}.section-title{font-size:1.08rem;font-weight:650;letter-spacing:-.015em;margin:1.65rem 0 .65rem}.empty{color:var(--text-muted);padding:2rem 0}.hub{padding:.35rem 0 3.5rem}.hub-hero{position:relative;display:flex;align-items:center;justify-content:space-between;gap:1.5rem;padding:1.15rem 1.5rem;background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow-sm);overflow:hidden}.hub-hero:before{content:"";position:absolute;inset:0;background:radial-gradient(120% 140% at 100% 0%,color-mix(in srgb,var(--dc) 10%,transparent),transparent 55%);pointer-events:none}.hub-id{position:relative;display:flex;align-items:center;gap:1.15rem}.hub-icon{flex-shrink:0;width:54px;height:54px;display:grid;place-items:center;font-size:1.6rem;border-radius:15px;background:color-mix(in srgb,var(--dc) 14%,transparent);color:var(--dc);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--dc) 22%,transparent)}.hub-icon svg{width:27px;height:27px}.hub-overline{margin:0 0 .3rem;font-family:var(--mono);font-size:.68rem;font-weight:600;letter-spacing:.04em;color:var(--dc)}.hub-title{margin:0;font-size:1.12rem;line-height:1.2;letter-spacing:-.01em}.hub-desc{margin:.3rem 0 0;color:var(--text-muted);font-size:.83rem;white-space:nowrap}.hub-stats{position:relative;display:flex;gap:.7rem;margin:0;flex-shrink:0}.hub-stat{min-width:78px;padding:.55rem .85rem;text-align:center;background:color-mix(in srgb,var(--dc) 8%,var(--surface));border:1px solid color-mix(in srgb,var(--dc) 16%,var(--border));border-radius:12px}.hub-stat dd{margin:0;font-size:1.3rem;font-weight:750;line-height:1.1;letter-spacing:-.03em;font-variant-numeric:tabular-nums;color:var(--dc)}.hub-stat dt{margin:.05rem 0 0;font-size:.68rem;color:var(--text-muted)}.cat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.7rem;margin-top:1.1rem}.cat-card{display:flex;align-items:flex-start;gap:.8rem;padding:.95rem 1.05rem;color:var(--text);background:var(--surface);border:1px solid var(--border);border-radius:8px;box-shadow:var(--shadow-sm);transition:box-shadow .16s ease,border-color .16s ease,transform .16s ease}.cat-card:hover{color:var(--text);border-color:color-mix(in srgb,var(--dc) 45%,var(--border));box-shadow:var(--shadow-md);transform:translateY(-2px);text-decoration:none}.cat-icon{flex-shrink:0;width:42px;height:42px;display:grid;place-items:center;border-radius:8px;background:color-mix(in srgb,var(--dc) 13%,transparent);color:var(--dc)}.cat-icon svg{width:21px;height:21px}.cat-body{flex:1 1 auto;min-width:0}.cat-head{display:flex;align-items:baseline;justify-content:space-between;gap:.5rem}.cat-head :is(h2,h3){margin:0;font-size:.88rem;font-weight:600;letter-spacing:-.01em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.cat-count{flex-shrink:0;font-size:.76rem;font-weight:650;color:var(--dc);font-variant-numeric:tabular-nums}.cat-count small{margin-left:.1rem;font-size:.66rem;font-weight:500;color:var(--text-muted)}.cat-body p{margin:.4rem 0 0;min-height:2.45rem;font-size:.79rem;line-height:1.55;color:var(--text-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}@media(max-width:1080px){.cat-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(max-width:820px){.cat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:760px){.hub-hero{flex-direction:column;align-items:flex-start;gap:1.1rem;padding:1.3rem}.hub-desc{white-space:normal}.hub-stats{width:100%}.hub-stat{flex:1}}@media(max-width:520px){.container{padding-inline:1rem}.cat-grid{grid-template-columns:1fr}}.site-header[data-astro-cid-3ef6ksr2]{position:sticky;top:0;z-index:20;background:var(--surface);border-bottom:1px solid var(--border);backdrop-filter:blur(10px)}.header-inner[data-astro-cid-3ef6ksr2]{display:grid;grid-template-columns:minmax(180px,1fr) auto minmax(180px,1fr);align-items:center;gap:1.5rem;min-height:54px;width:100%;padding-inline:1.75rem}.logo[data-astro-cid-3ef6ksr2]{justify-self:start}.logo[data-astro-cid-3ef6ksr2]{display:inline-flex;align-items:center;gap:.5rem;min-width:max-content;font-weight:800;font-size:1.12rem;color:var(--text);flex-shrink:0;white-space:nowrap}.logo[data-astro-cid-3ef6ksr2]:hover{text-decoration:none}.logo[data-astro-cid-3ef6ksr2] .logo-mark{width:28px;height:28px;flex-shrink:0;border-radius:8px}.logo-word[data-astro-cid-3ef6ksr2] .accent[data-astro-cid-3ef6ksr2]{color:var(--brand)}.nav[data-astro-cid-3ef6ksr2]{justify-self:center;min-width:0;display:flex;align-items:center;gap:.15rem;white-space:nowrap;overflow-x:auto;scrollbar-width:none}.nav[data-astro-cid-3ef6ksr2]::-webkit-scrollbar{display:none}.nav-link[data-astro-cid-3ef6ksr2]{padding:.28rem .55rem;border-radius:6px;color:var(--text-muted);font-size:.82rem;font-weight:500}.nav-link[data-astro-cid-3ef6ksr2]:hover{background:var(--bg);color:var(--text);text-decoration:none}.nav-link[data-astro-cid-3ef6ksr2].active{color:var(--brand);background:var(--brand-soft)}.nav-link[data-astro-cid-3ef6ksr2].featured{color:#6d4ac7;font-weight:650;position:relative}.nav-link[data-astro-cid-3ef6ksr2].featured.active,.nav-link[data-astro-cid-3ef6ksr2].featured:hover{color:#5937b1;background:#f5f2fb}.nav-link[data-astro-cid-3ef6ksr2].featured:after{content:"";position:absolute;right:.22rem;top:.2rem;width:4px;height:4px;border-radius:50%;background:#8b5cf6}.header-actions[data-astro-cid-3ef6ksr2]{justify-self:end;display:inline-flex;align-items:center;gap:.55rem;flex-shrink:0}.online-pill[data-astro-cid-3ef6ksr2]{display:inline-flex;align-items:center;gap:.34rem;padding:.25rem .62rem;border:1px solid rgba(16,185,129,.22);border-radius:999px;background:#ecfdf5db;color:#047857;font-size:.76rem;font-weight:650;white-space:nowrap}.online-pill[data-astro-cid-3ef6ksr2] strong[data-astro-cid-3ef6ksr2]{color:#065f46;font-weight:850;font-variant-numeric:tabular-nums}.online-dot[data-astro-cid-3ef6ksr2]{width:.42rem;height:.42rem;border-radius:999px;background:#10b981;box-shadow:0 0 0 4px #10b98124}@media(prefers-color-scheme:dark){.online-pill[data-astro-cid-3ef6ksr2]{border-color:#34d3993d;background:#064e3b3d;color:#6ee7b7}.online-pill[data-astro-cid-3ef6ksr2] strong[data-astro-cid-3ef6ksr2]{color:#a7f3d0}}.parent-btn[data-astro-cid-3ef6ksr2]{display:inline-flex;align-items:center;gap:.18rem;color:var(--text-faint);font-size:.8rem;font-weight:500;white-space:nowrap;transition:color .14s ease}.parent-btn[data-astro-cid-3ef6ksr2] svg[data-astro-cid-3ef6ksr2]{width:12px;height:12px}.parent-btn[data-astro-cid-3ef6ksr2]:hover{color:var(--brand);text-decoration:none}.parent-btn[data-astro-cid-3ef6ksr2]:hover svg[data-astro-cid-3ef6ksr2]{transform:translate(1px,-1px)}.parent-btn[data-astro-cid-3ef6ksr2] svg[data-astro-cid-3ef6ksr2]{transition:transform .14s ease}.search-btn[data-astro-cid-3ef6ksr2]{display:inline-flex;align-items:center;gap:.32rem;padding:.28rem .7rem .28rem .6rem;border:1px solid var(--border-strong);border-radius:999px;color:var(--text-muted);font-size:.82rem;font-weight:500;white-space:nowrap;transition:border-color .14s ease,color .14s ease,background-color .14s ease}.search-btn[data-astro-cid-3ef6ksr2] svg[data-astro-cid-3ef6ksr2]{width:15px;height:15px}.search-btn[data-astro-cid-3ef6ksr2]:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);text-decoration:none}@media(max-width:900px){.header-inner[data-astro-cid-3ef6ksr2]{display:flex;align-items:flex-start;flex-direction:column;gap:.4rem;padding-block:.55rem}.nav[data-astro-cid-3ef6ksr2]{justify-self:auto;width:100%;justify-content:flex-start}.header-actions[data-astro-cid-3ef6ksr2]{justify-self:auto}}.site-footer[data-astro-cid-sz7xmlte]{flex-shrink:0;margin-top:3rem;border-top:1px solid var(--border);background:var(--surface)}.footer-top[data-astro-cid-sz7xmlte]{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr) minmax(0,.75fr);align-items:start;gap:2.5rem;padding-block:2rem}.footer-logo[data-astro-cid-sz7xmlte]{display:inline-flex;align-items:center;gap:.5rem;font-weight:800;font-size:1.05rem;color:var(--text)}.footer-logo[data-astro-cid-sz7xmlte]:hover{text-decoration:none}.footer-logo[data-astro-cid-sz7xmlte] .footer-logo-mark{width:26px;height:26px;flex-shrink:0;border-radius:7px}.footer-logo[data-astro-cid-sz7xmlte] .accent[data-astro-cid-sz7xmlte]{color:var(--brand)}.footer-slogan[data-astro-cid-sz7xmlte]{margin:.6rem 0 0;max-width:46ch;color:var(--text-muted);font-size:.85rem;line-height:1.7}.footer-nav-title[data-astro-cid-sz7xmlte]{display:block;margin-bottom:.7rem;font-size:.75rem;font-weight:600;color:var(--text-muted)}.footer-links[data-astro-cid-sz7xmlte]{display:flex;flex-wrap:wrap;gap:.5rem 1.1rem;max-width:420px}.footer-links[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]{color:var(--text-muted);font-size:.85rem}.footer-links[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]:hover{color:var(--brand);text-decoration:none}.footer-bottom[data-astro-cid-sz7xmlte]{border-top:1px solid var(--border);padding-block:1rem;font-size:.8rem;color:var(--text-muted)}.footer-bottom[data-astro-cid-sz7xmlte] .container[data-astro-cid-sz7xmlte]{display:flex;align-items:center;justify-content:space-between;gap:.5rem 1rem;flex-wrap:wrap}.footer-bottom[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]{color:var(--text-muted)}.parent-link[data-astro-cid-sz7xmlte]{display:inline-flex;align-items:center;gap:.12em;font-weight:600}.footer-bottom[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte].parent-link{color:var(--brand)}.parent-link[data-astro-cid-sz7xmlte] svg[data-astro-cid-sz7xmlte]{width:.82em;height:.82em;opacity:.8}.parent-link[data-astro-cid-sz7xmlte]:hover{text-decoration:underline}.footer-family[data-astro-cid-sz7xmlte]{max-width:250px}.family-card[data-astro-cid-sz7xmlte]{display:inline-flex;align-items:center;gap:.4rem;padding:.42rem .7rem .42rem .8rem;border:1px solid var(--border-strong);border-radius:999px;background:var(--bg);color:var(--text);font-size:.85rem;font-weight:620;transition:border-color .16s ease,color .16s ease,background-color .16s ease,transform .16s ease}.family-card[data-astro-cid-sz7xmlte]:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-soft);transform:translateY(-1px);text-decoration:none}.family-tag[data-astro-cid-sz7xmlte]{margin-left:.4rem;padding:.05rem .35rem;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:.64rem;font-weight:600;vertical-align:.12em}.family-card[data-astro-cid-sz7xmlte]:hover .family-tag[data-astro-cid-sz7xmlte]{background:var(--surface)}.family-arrow[data-astro-cid-sz7xmlte]{width:14px;height:14px;color:var(--text-faint);transition:color .16s ease,transform .16s ease}.family-card[data-astro-cid-sz7xmlte]:hover .family-arrow[data-astro-cid-sz7xmlte]{color:var(--brand);transform:translate(1px,-1px)}.family-desc[data-astro-cid-sz7xmlte]{margin:.6rem 0 0;font-size:.78rem;line-height:1.65;color:var(--text-faint)}.footer-beian[data-astro-cid-sz7xmlte]{white-space:nowrap}.footer-beian[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]:hover{color:var(--brand);text-decoration:none}@media(max-width:900px){.footer-top[data-astro-cid-sz7xmlte]{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:1.8rem 2rem}.footer-brand[data-astro-cid-sz7xmlte]{grid-column:1 / -1}}@media(max-width:560px){.footer-top[data-astro-cid-sz7xmlte]{grid-template-columns:minmax(0,1fr);gap:1.5rem}.footer-family[data-astro-cid-sz7xmlte]{max-width:none}}
