:root{--bg: #fafbfc;--surface: #ffffff;--text: #1a2233;--text-secondary: #4b5565;--muted: #8a94a6;--border: #e5e9f0;--border-strong: #d3dae5;--accent: #2456e6;--accent-hover: #1a44c2;--accent-weak: #eef3fe;--accent-text: #1d49cc;--warn: #b45309;--warn-weak: #fef6e7;--radius: 14px;--radius-sm: 8px;--shadow-sm: 0 1px 2px rgba(16, 24, 40, .04);--shadow-md: 0 6px 24px -8px rgba(16, 24, 40, .1);--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;--font-mono: ui-monospace, SFMono-Regular, Consolas, "Cascadia Code", Menlo, monospace;--site-width: 1120px;--prose-width: 760px}*{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font-sans);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;scroll-behavior:smooth}body{font-size:16px;line-height:1.75;min-height:100vh;display:flex;flex-direction:column}main{flex:1}img{max-width:100%;height:auto;display:block}a{color:var(--accent-text);text-decoration:none}a:hover{color:var(--accent-hover)}.container{max-width:var(--site-width);margin:0 auto;padding:0 24px}.site-header{position:sticky;top:0;z-index:50;background:#ffffffeb;backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}.header-inner{display:flex;align-items:center;gap:16px;height:64px}.brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:16.5px;color:var(--text);white-space:nowrap;flex-shrink:0}.brand:hover{color:var(--accent-text)}.brand svg{width:26px;height:26px;flex-shrink:0}.site-nav{flex:1;min-width:0;overflow-x:auto;scrollbar-width:none}.site-nav::-webkit-scrollbar{display:none}.site-nav ul{display:flex;align-items:center;justify-content:space-between;gap:2px;list-style:none}.site-nav a{display:block;padding:5px 9px;border-radius:999px;font-size:13.5px;letter-spacing:-.1px;color:var(--text-secondary);white-space:nowrap;transition:background .15s ease,color .15s ease}.site-nav a:hover{color:var(--accent-text);background:var(--accent-weak)}.site-nav a[aria-current=page],.site-nav a.active{color:var(--accent-text);background:var(--accent-weak);font-weight:600}.header-search{flex-shrink:0;display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border:1px solid var(--border);border-radius:999px;font-size:13px;color:var(--muted);background:var(--surface);transition:border-color .15s ease,color .15s ease}.header-search:hover{border-color:var(--accent);color:var(--accent-text)}.site-footer{margin-top:96px;border-top:1px solid var(--border);background:var(--surface);font-size:14px;color:var(--text-secondary)}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr 1fr;gap:40px;padding:56px 0 40px}.footer-about p{margin-top:12px;color:var(--muted);max-width:36em}.footer-col h3{font-size:14px;font-weight:600;color:var(--text);margin-bottom:14px}.footer-col ul{list-style:none;display:grid;gap:8px}.footer-col a{color:var(--text-secondary)}.footer-col a:hover{color:var(--accent-text)}.footer-bottom{border-top:1px solid var(--border);padding:20px 0;display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;color:var(--muted);font-size:13px}.footer-bottom a{color:var(--muted)}.footer-bottom a:hover{color:var(--accent-text)}.hero{padding:72px 0 56px;text-align:center}.hero h1{font-size:clamp(30px,4.5vw,44px);line-height:1.3;letter-spacing:-.5px;max-width:22em;margin:0 auto}.hero .subtitle{margin:18px auto 0;max-width:42em;color:var(--text-secondary);font-size:17px}.hero-search{margin:32px auto 0;max-width:560px;display:flex;gap:10px}.hero-search input{flex:1;padding:13px 18px;font-size:15px;font-family:inherit;border:1px solid var(--border-strong);border-radius:999px;background:var(--surface);color:var(--text);outline:none;transition:border-color .15s ease,box-shadow .15s ease}.hero-search input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-weak)}.hero-search button{padding:0 26px;font-size:15px;font-family:inherit;font-weight:600;color:#fff;background:var(--accent);border:none;border-radius:999px;cursor:pointer;transition:background .15s ease}.hero-search button:hover{background:var(--accent-hover)}.hero-tags{margin-top:22px;display:flex;flex-wrap:wrap;gap:10px;justify-content:center}.hero-tags a{padding:5px 14px;border:1px solid var(--border);border-radius:999px;font-size:13.5px;color:var(--text-secondary);background:var(--surface);transition:border-color .15s ease,color .15s ease}.hero-tags a:hover{border-color:var(--accent);color:var(--accent-text)}.section{padding:40px 0}.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:24px}.section-head .eyebrow{display:block;font-size:13px;font-weight:600;letter-spacing:1.5px;color:var(--accent-text);text-transform:uppercase;margin-bottom:6px}.section-head h2{font-size:24px;line-height:1.4}.section-head .more{font-size:14px;white-space:nowrap;color:var(--muted)}.section-head .more:hover{color:var(--accent-text)}.section-desc{color:var(--text-secondary);max-width:46em;margin:-12px 0 24px;font-size:15px}.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.card-grid.cols-2{grid-template-columns:repeat(2,1fr)}.card-grid.cols-4{grid-template-columns:repeat(4,1fr)}.post-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}.post-card:hover{transform:translateY(-3px);border-color:var(--border-strong);box-shadow:var(--shadow-md)}.post-card .cover{aspect-ratio:1200 / 630;background:var(--accent-weak);overflow:hidden}.post-card .cover img{width:100%;height:100%;object-fit:cover}.post-card .body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}.post-card .meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--muted)}.post-card .meta .cat{color:var(--accent-text);background:var(--accent-weak);padding:2px 10px;border-radius:999px;font-weight:600}.post-card h3{font-size:16.5px;line-height:1.5}.post-card h3 a{color:var(--text)}.post-card h3 a:hover{color:var(--accent-text)}.post-card p{font-size:14px;color:var(--text-secondary);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.post-list{display:grid;gap:0;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);overflow:hidden}.post-row{display:flex;align-items:baseline;gap:16px;padding:16px 22px;border-bottom:1px solid var(--border)}.post-row:last-child{border-bottom:none}.post-row:hover{background:var(--bg)}.post-row .cat{flex-shrink:0;font-size:13px;color:var(--accent-text);min-width:5.5em}.post-row .title{flex:1;font-size:15px;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.post-row .title:hover{color:var(--accent-text)}.post-row time{flex-shrink:0;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}.topic-card{display:block;padding:22px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}.topic-card:hover{transform:translateY(-3px);border-color:var(--border-strong);box-shadow:var(--shadow-md)}.topic-card h3{font-size:16px;color:var(--text);margin-bottom:6px}.topic-card p{font-size:13.5px;color:var(--text-secondary);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.topic-card .count{display:inline-block;margin-top:10px;font-size:12.5px;color:var(--muted)}.breadcrumb{padding:20px 0 0;font-size:13.5px;color:var(--muted)}.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;align-items:center}.breadcrumb li{display:flex;align-items:center;gap:6px}.breadcrumb li+li:before{content:"/";color:var(--border-strong)}.breadcrumb a{color:var(--muted)}.breadcrumb a:hover{color:var(--accent-text)}.breadcrumb [aria-current]{color:var(--text-secondary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:24em}.page-head{padding:36px 0 8px;max-width:800px}.page-head h1{font-size:clamp(26px,3.6vw,34px);line-height:1.35;letter-spacing:-.3px}.page-head .lede{margin-top:14px;color:var(--text-secondary);font-size:16px}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:56px;padding-top:12px}.article-main{max-width:var(--prose-width)}.article-header h1{font-size:clamp(26px,3.4vw,34px);line-height:1.4;letter-spacing:-.3px;margin:18px 0 16px}.article-meta{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:13.5px;color:var(--muted);padding-bottom:20px;border-bottom:1px solid var(--border)}.article-meta .cat-link{color:var(--accent-text);font-weight:600}.article-cover{margin:24px 0 8px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border)}.article-cover img{width:100%}.article-cover figcaption{font-size:13px;color:var(--muted);text-align:center;padding:8px 12px;background:var(--surface);border-top:1px solid var(--border)}.article-aside{position:relative}.toc{position:sticky;top:88px;font-size:13.5px;border-left:1px solid var(--border);padding-left:20px;max-height:calc(100vh - 120px);overflow-y:auto}.toc h2{font-size:13px;letter-spacing:1px;color:var(--muted);font-weight:600;margin-bottom:12px;text-transform:uppercase}.toc ul{list-style:none;display:grid;gap:8px}.toc li.depth-3{padding-left:14px}.toc a{color:var(--text-secondary);display:block;line-height:1.5}.toc a:hover{color:var(--accent-text)}.prose{margin-top:8px;font-size:16px;line-height:1.9;color:var(--text)}.prose>*+*{margin-top:1.1em}.prose h2{font-size:23px;line-height:1.45;margin-top:2.2em;padding-top:.4em;letter-spacing:-.2px}.prose h3{font-size:18.5px;line-height:1.5;margin-top:1.8em}.prose h4{font-size:16.5px;margin-top:1.5em}.prose ul,.prose ol{padding-left:1.6em;display:grid;gap:.45em}.prose li::marker{color:var(--accent)}.prose blockquote{border-left:3px solid var(--accent);background:var(--accent-weak);padding:14px 20px;border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-secondary)}.prose blockquote>*+*{margin-top:.6em}.prose code{font-family:var(--font-mono);font-size:.88em;background:#eef1f6;border-radius:5px;padding:2px 6px}.prose pre{background:#f6f8fa;border:1px solid var(--border);border-radius:var(--radius-sm);padding:16px 20px;overflow-x:auto;font-size:13.5px;line-height:1.7}.prose pre code{background:none;padding:0}.prose table{width:100%;border-collapse:collapse;font-size:14.5px;display:block;overflow-x:auto;white-space:nowrap}.prose table thead{background:var(--bg)}.prose table th,.prose table td{border:1px solid var(--border);padding:10px 14px;text-align:left;white-space:normal;min-width:7em}.prose table th{font-weight:600;color:var(--text)}.prose img{border-radius:var(--radius-sm);border:1px solid var(--border)}.prose hr{border:none;border-top:1px solid var(--border);margin:2.5em 0}.prose a{text-decoration:underline;text-decoration-color:#2456e659;text-underline-offset:3px}.prose a:hover{text-decoration-color:var(--accent)}.article-footer{margin-top:48px;display:grid;gap:32px}.article-tags{display:flex;flex-wrap:wrap;gap:8px}.article-tags a{font-size:13px;padding:4px 12px;border-radius:999px;background:var(--surface);border:1px solid var(--border);color:var(--text-secondary)}.article-tags a:hover{border-color:var(--accent);color:var(--accent-text)}.prev-next{display:grid;grid-template-columns:1fr 1fr;gap:16px}.prev-next a{display:block;padding:16px 20px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);transition:border-color .15s ease}.prev-next a:hover{border-color:var(--accent)}.prev-next .label{font-size:12.5px;color:var(--muted);display:block;margin-bottom:4px}.prev-next .t{font-size:14.5px;color:var(--text);line-height:1.5}.prev-next a:hover .t{color:var(--accent-text)}.prev-next .next{text-align:right}.offer-card{--brand: var(--accent);margin:28px 0 8px;padding:24px 26px;border-radius:var(--radius);background:#0f1a30;border:1px solid #22304f;color:#c6d2e8;font-size:14.5px}.offer-head{display:flex;align-items:center;flex-wrap:wrap;gap:10px}.offer-name{font-size:20px;font-weight:700;color:#f5f8ff}.offer-tier{font-size:12px;padding:2px 10px;border-radius:999px;border:1px solid var(--brand);color:var(--brand)}.offer-badge{font-size:12px;padding:2px 10px;border-radius:999px;background:var(--brand);color:#0b1220;font-weight:700}.offer-price{margin-top:12px;display:flex;align-items:baseline;gap:8px}.offer-price strong{font-size:26px;color:var(--brand);letter-spacing:-.5px}.offer-price span{color:#8fa0bf}.offer-points{margin:14px 0 0;padding:0;list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:6px 18px}.offer-points li{padding-left:18px;position:relative;line-height:1.6}.offer-points li:before{content:"✓";position:absolute;left:0;color:var(--brand);font-weight:700}.offer-coupon{margin-top:16px;display:inline-flex;align-items:center;gap:10px;padding:8px 14px;border:1px dashed var(--brand);border-radius:var(--radius-sm);background:#ffffff08}.offer-coupon .label{font-size:13px;color:#8fa0bf}.offer-coupon code{font-family:var(--font-mono);font-size:15px;font-weight:700;color:var(--brand);letter-spacing:1px}.offer-cta{display:block;margin-top:18px;padding:12px 0;text-align:center;border-radius:999px;background:var(--brand);color:#0b1220;font-weight:700;font-size:15.5px;transition:filter .15s ease}.offer-cta:hover{filter:brightness(1.1);color:#0b1220}.offer-note{margin-top:12px;font-size:12.5px;color:#8fa0bf}.offer-note a{color:#aebfe0;text-decoration:underline}@media(max-width:640px){.offer-card{padding:20px 18px}.offer-points{grid-template-columns:1fr}}.faq-section{margin-top:8px}.faq-section>h2{font-size:22px;margin-bottom:18px}.faq-list{display:grid;gap:12px}.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.faq-item summary{cursor:pointer;padding:16px 20px;font-weight:600;font-size:15.5px;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"+";font-size:20px;color:var(--muted);transition:transform .2s ease;flex-shrink:0}.faq-item[open] summary:after{transform:rotate(45deg)}.faq-item .answer{padding:0 20px 18px;color:var(--text-secondary);font-size:14.5px}.callout{display:grid;gap:6px;padding:16px 20px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--surface);font-size:14.5px}.callout.warn{border-color:#f3d9ac;background:var(--warn-weak);color:var(--warn)}.tut-filter{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}.tut-filter button{padding:6px 15px;font-size:13.5px;font-family:inherit;color:var(--text-secondary);background:var(--surface);border:1px solid var(--border);border-radius:999px;cursor:pointer;transition:border-color .15s ease,color .15s ease,background .15s ease}.tut-filter button:hover{border-color:var(--accent);color:var(--accent-text)}.tut-filter button.active{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}.tutorial-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}.tutorial-card:hover{transform:translateY(-3px);border-color:var(--border-strong);box-shadow:var(--shadow-md)}.tutorial-card .tc-cover{position:relative;display:block;aspect-ratio:1200 / 630;background:var(--accent-weak);overflow:hidden}.tutorial-card .tc-cover img{width:100%;height:100%;object-fit:cover}.tutorial-card .tc-client{position:absolute;left:12px;bottom:12px;font-size:12px;font-weight:600;color:#0b1220;background:#ffffffeb;padding:3px 10px;border-radius:999px}.tutorial-card .tc-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:9px;flex:1}.tutorial-card .tc-tags{display:flex;flex-wrap:wrap;gap:6px;align-items:center}.tc-plat{font-size:11.5px;color:var(--text-secondary);background:var(--bg);border:1px solid var(--border);padding:1px 8px;border-radius:6px}.tc-diff{font-size:11.5px;padding:1px 8px;border-radius:6px;font-weight:600}.tc-diff.diff-easy{color:#047857;background:#e6f6ef}.tc-diff.diff-adv{color:#b45309;background:#fdf1e0}.tutorial-card h3{font-size:16px;line-height:1.5}.tutorial-card h3 a{color:var(--text)}.tutorial-card h3 a:hover{color:var(--accent-text)}.tutorial-card .tc-body p{font-size:13.5px;color:var(--text-secondary);line-height:1.65;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.tutorial-card .tc-meta{margin-top:auto;padding-top:8px;display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--muted)}.tutorial-card .tc-meta time{font-variant-numeric:tabular-nums}.tutorial-card .tc-read{margin-left:auto;font-weight:600;color:var(--accent-text);white-space:nowrap}.ai-airport-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;display:flex;flex-direction:column;gap:8px}.ai-airport-card .aac-head{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.ai-airport-card .aac-name{font-size:16px;font-weight:700;color:var(--text)}.ai-airport-card .aac-tag{font-size:11.5px;color:var(--accent-text);background:var(--accent-weak);border-radius:999px;padding:1px 9px}.ai-airport-card p{font-size:13.5px;color:var(--text-secondary);line-height:1.6}.ai-airport-card .aac-actions{margin-top:auto;padding-top:6px;display:flex;gap:10px}.learn-path{list-style:none;display:flex;flex-wrap:wrap;gap:10px;align-items:center;padding:0;margin-top:6px}.learn-path li{display:inline-flex;align-items:center;gap:8px;position:relative}.learn-path li:not(:last-child):after{content:"→";color:var(--muted);margin-left:10px}.learn-path .lp-num{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:999px;background:var(--accent-weak);color:var(--accent-text);font-size:12.5px;font-weight:700;flex-shrink:0}.learn-path a{padding:7px 14px;background:var(--surface);border:1px solid var(--border);border-radius:999px;font-size:14px;color:var(--text-secondary);transition:border-color .15s ease,color .15s ease}.learn-path a:hover{border-color:var(--accent);color:var(--accent-text)}@media(max-width:640px){.learn-path{flex-direction:column;align-items:stretch;gap:8px}.learn-path li:not(:last-child):after{display:none}.learn-path li{width:100%}.learn-path a{flex:1}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.ranking{--rk-bg: #ffffff;--rk-panel: #ffffff;--rk-line: #e5e7eb;--rk-line-strong: #d6dce5;--rk-text: #0f172a;--rk-text-2: #64748b;--rk-hover: #f8fafc;margin-top:8px}.ranking-controls{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}.ranking-filters{display:flex;flex-wrap:wrap;gap:8px}.ranking-filters button{padding:6px 15px;font-size:13.5px;font-family:inherit;color:var(--text-secondary);background:var(--surface);border:1px solid var(--border);border-radius:999px;cursor:pointer;transition:border-color .15s ease,color .15s ease,background .15s ease}.ranking-filters button:hover{border-color:var(--accent);color:var(--accent-text)}.ranking-filters button.active{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}.ranking-sort{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted)}.ranking-sort select{font-family:inherit;font-size:13.5px;padding:6px 30px 6px 12px;border:1px solid var(--border);border-radius:8px;background:var(--surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%238a94a6' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat right 12px center;color:var(--text);cursor:pointer;appearance:none;-webkit-appearance:none}.ranking-sort select:focus{outline:none;border-color:var(--accent)}.ranking-wrap{border-radius:var(--radius);border:1px solid var(--rk-line);background:var(--rk-panel);overflow:hidden}.ranking-table{width:100%;border-collapse:collapse;color:var(--rk-text);font-size:14.5px;background:var(--rk-panel)}.ranking-table thead th{text-align:left;font-size:12.5px;font-weight:600;letter-spacing:.5px;color:var(--rk-text-2);padding:14px 18px;border-bottom:1px solid var(--rk-line-strong);white-space:nowrap;background:#f8fafc}.ranking-table tbody td{padding:15px 18px;border-bottom:1px solid var(--rk-line);vertical-align:middle}.ranking-table tbody tr:last-child td{border-bottom:none}.ranking-table tbody tr{transition:background .14s ease}.ranking-table tbody tr:hover{background:var(--rk-hover);box-shadow:inset 3px 0 0 var(--accent)}.col-rank{width:56px;text-align:center}.rank-num{display:inline-flex;align-items:center;justify-content:center;min-width:26px;height:26px;padding:0 6px;font-variant-numeric:tabular-nums;font-weight:700;font-size:14px;color:var(--rk-text-2);border-radius:8px}.ranking-table tr.top-1 .rank-num{color:#92610a;background:#fdf1c9;border:1px solid #f2d18a}.ranking-table tr.top-2 .rank-num{color:#566072;background:#eef1f6;border:1px solid #d5dce6}.ranking-table tr.top-3 .rank-num{color:#a4560f;background:#fbe5d0;border:1px solid #f0c6a3}.ranking-table tr.top{background:#fcfdff}.ranking-table tr.top:hover{background:var(--rk-hover);box-shadow:inset 3px 0 0 var(--accent)}.brand-name{display:inline-block;font-size:16px;font-weight:700;color:var(--rk-text)}.brand-name:hover{color:var(--accent-text)}.brand-tags{display:inline-flex;flex-wrap:wrap;gap:5px;margin-left:10px;vertical-align:middle}.brand-tags .tag{font-size:11.5px;line-height:1.6;padding:1px 8px;border-radius:999px;border:1px solid transparent;white-space:nowrap}.tag-recommend{color:#1d4ed8;background:#e8effd;border-color:#cadcfb}.tag-line{color:#047857;background:#e6f6ef;border-color:#bde6d3}.tag-value{color:#a16207;background:#fdf6da;border-color:#efe0a4}.tag-low{color:#c2570c;background:#fdeede;border-color:#f6d6b4}.tag-unlimited{color:#7c3aed;background:#f1ebfc;border-color:#ded0f7}.tag-ai{color:#0e7fb8;background:#e6f3fb;border-color:#bfe1f2}.tag-traffic{color:#0e8f86;background:#e2f5f3;border-color:#bae7e2}.tag-neutral{color:#475569;background:#eef1f6;border-color:#dce2ea}.col-price .price{font-size:18px;font-weight:700;color:#0f172a;font-variant-numeric:tabular-nums}.col-price .price-note{display:block;font-size:11.5px;color:var(--rk-text-2);margin-top:1px}.col-tier{color:var(--rk-text-2);font-size:13.5px;white-space:nowrap}.coupon{font-family:var(--font-mono);font-size:13px;font-weight:700;letter-spacing:.5px;color:#1d4ed8;background:#eef4ff;border:1px dashed #b6ccf6;border-radius:7px;padding:4px 10px;cursor:pointer;transition:background .14s ease,color .14s ease,border-color .14s ease}.coupon:hover{background:#e0eaff;border-style:solid}.coupon.copied{color:#047857;border-color:#86cfab;background:#e6f6ef}.coupon-none{color:#94a3b8;font-size:13px}.status{display:inline-flex;align-items:center;gap:5px;font-size:13px;white-space:nowrap}.status .dot{font-size:9px;line-height:1}.status-active{color:#16a34a}.status-warning{color:#d97706}.status-offline{color:#dc2626}.col-actions{white-space:nowrap}.btn-rank{display:inline-block;padding:6px 14px;font-size:13px;font-weight:600;border-radius:8px;transition:background .14s ease,border-color .14s ease,color .14s ease}.btn-detail{color:#334155;border:1px solid #cbd5e1;background:#fff}.btn-detail:hover{color:#0f172a;border-color:#94a3b8;background:#f8fafc}.btn-go{color:#fff;background:var(--accent);border:1px solid var(--accent);margin-left:6px}.btn-go:hover{color:#fff;background:var(--accent-hover);border-color:var(--accent-hover)}.ranking-empty{margin-top:16px;color:var(--muted);font-size:14px;text-align:center}@media(max-width:1024px){.ranking-table thead th,.ranking-table tbody td{padding-left:14px;padding-right:14px}.brand-tags .tag:nth-child(n+3){display:none}}@media(max-width:640px){.ranking-controls{flex-direction:column;align-items:stretch}.ranking-sort{justify-content:flex-end}.ranking-wrap{border:none;background:transparent;overflow:visible}.ranking-table{background:none;display:block}.ranking-table thead{display:none}.ranking-table tbody,.ranking-table tr,.ranking-table td{display:block}.ranking-table tr{position:relative;background:var(--rk-panel);border:1px solid var(--rk-line);border-radius:var(--radius);padding:14px 16px;margin-bottom:12px;display:grid;grid-template-columns:auto 1fr auto;grid-template-areas:"rank brand status" "price tier tier" "coupon coupon coupon" "actions actions actions";column-gap:12px;row-gap:10px;align-items:center}.ranking-table tr.top{border-color:var(--rk-line-strong)}.ranking-table tbody td{padding:0;border-bottom:none}.col-rank{grid-area:rank;width:auto}.col-brand{grid-area:brand}.brand-tags{display:flex;margin-left:0;margin-top:6px}.brand-tags .tag:nth-child(n+3){display:inline-block}.col-price{grid-area:price;display:flex;align-items:baseline;gap:8px}.col-price .price-note{margin-top:0}.col-tier{grid-area:tier;justify-self:end;align-self:center;display:block;color:var(--rk-text-2);font-size:12.5px}.col-status{grid-area:status;justify-self:end}.col-coupon{grid-area:coupon;padding-top:10px;border-top:1px solid var(--rk-line)}.col-coupon:before{content:"优惠码：";color:var(--rk-text-2);font-size:13px;margin-right:6px}.col-actions{grid-area:actions;display:flex;gap:10px}.btn-rank{flex:1;text-align:center;padding:9px 0}.btn-go{margin-left:0}}.news-filter{display:flex;flex-wrap:wrap;gap:8px;margin:24px 0 4px}.news-filter button{padding:6px 16px;font-size:13.5px;font-family:inherit;border:1px solid var(--border);border-radius:999px;background:var(--surface);color:var(--text-secondary);cursor:pointer;transition:border-color .15s ease,color .15s ease,background .15s ease}.news-filter button:hover{border-color:var(--accent);color:var(--accent-text)}.news-filter button.active{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}.news-list{display:grid;gap:14px;margin-top:20px}.news-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px 24px;transition:border-color .15s ease,box-shadow .15s ease}.news-card:hover{border-color:var(--border-strong);box-shadow:var(--shadow-md)}.news-card .nc-top{display:flex;align-items:center;gap:8px;margin-bottom:8px}.nc-cat{font-size:12.5px;font-weight:600;color:var(--accent-text);background:var(--accent-weak);padding:2px 10px;border-radius:999px}.nc-badge{font-size:12px;padding:1px 8px;border-radius:999px;font-weight:600}.nc-badge.pin{background:#eef7ee;color:#1a7f37}.nc-badge.hot{background:#fff1e7;color:#c2410c}.nc-badge.alert{background:#fdecec;color:#b91c1c}.news-card h2{font-size:18px;line-height:1.5}.news-card h2 a{color:var(--text)}.news-card h2 a:hover{color:var(--accent-text)}.news-card .nc-desc{margin-top:6px;font-size:14px;color:var(--text-secondary);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.news-card .nc-meta{margin-top:12px;display:flex;flex-wrap:wrap;gap:6px 18px;align-items:center;font-size:12.5px;color:var(--muted)}.news-card .nc-meta time{margin-left:4px;font-variant-numeric:tabular-nums}.nc-read{margin-left:auto;font-size:13px;font-weight:600;color:var(--accent-text)}.news-brief-list{display:grid;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);overflow:hidden}.news-brief{display:flex;align-items:baseline;gap:14px;padding:14px 22px;border-bottom:1px solid var(--border);color:var(--text)}.news-brief:last-child{border-bottom:none}.news-brief:hover{background:var(--bg)}.news-brief .nb-cat{flex-shrink:0;font-size:12.5px;font-weight:600;color:var(--accent-text);min-width:4.5em}.news-brief .nb-body{flex:1;min-width:0;display:flex;align-items:baseline;gap:10px}.news-brief .nb-title{font-size:14.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:60%}.news-brief:hover .nb-title{color:var(--accent-text)}.news-brief .nb-desc{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}.news-brief time{flex-shrink:0;font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums}.source-box{margin-top:32px;padding:16px 20px;border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:var(--radius-sm);background:var(--surface);font-size:14px}.source-box .label{display:inline-block;font-size:12.5px;font-weight:700;color:var(--accent-text);margin-right:10px}.source-box p{margin-top:8px;font-size:12.5px;color:var(--muted)}@media(max-width:640px){.news-brief .nb-body{flex-direction:column;gap:2px}.news-brief .nb-title{max-width:100%;white-space:normal}.news-brief .nb-desc{display:none}.news-card{padding:16px 18px}}.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}.tag-cloud a{padding:7px 16px;background:var(--surface);border:1px solid var(--border);border-radius:999px;font-size:14px;color:var(--text-secondary)}.tag-cloud a:hover{border-color:var(--accent);color:var(--accent-text)}.tag-cloud .n{color:var(--muted);font-size:12px;margin-left:4px}.search-box{margin:24px 0 8px;display:flex;gap:10px;max-width:560px}.search-box input{flex:1;padding:12px 18px;font-size:15px;font-family:inherit;border:1px solid var(--border-strong);border-radius:999px;outline:none;background:var(--surface);color:var(--text)}.search-box input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-weak)}.search-hint{color:var(--muted);font-size:14px;margin-top:16px}.error-page{text-align:center;padding:100px 0 60px}.error-page .code{font-size:84px;font-weight:800;color:var(--accent);letter-spacing:-3px;line-height:1}.error-page h1{font-size:24px;margin-top:16px}.error-page p{color:var(--text-secondary);margin-top:10px}.error-page .actions{margin-top:28px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.btn{display:inline-block;padding:10px 24px;border-radius:999px;font-size:14.5px;font-weight:600;border:1px solid var(--border-strong);color:var(--text);background:var(--surface);transition:border-color .15s ease,color .15s ease,background .15s ease}.btn:hover{border-color:var(--accent);color:var(--accent-text)}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn.primary:hover{background:var(--accent-hover);color:#fff}@media(max-width:1120px){.header-inner{gap:12px}.site-nav a{padding:4px 7px;font-size:13px}}@media(max-width:1024px){.card-grid,.card-grid.cols-4{grid-template-columns:repeat(2,1fr)}.article-layout{grid-template-columns:1fr;gap:0}.article-aside{display:none}.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}@media(max-width:640px){body{font-size:15.5px}.container{padding:0 18px}.header-inner{gap:14px;height:56px}.header-search span{display:none}.hero{padding:48px 0 36px}.hero-search{flex-direction:column}.hero-search button{padding:12px 0}.card-grid,.card-grid.cols-2,.card-grid.cols-4{grid-template-columns:1fr}.section{padding:28px 0}.post-row{flex-wrap:wrap;gap:6px 12px;padding:14px 16px}.post-row .title{flex-basis:100%;order:-1;white-space:normal}.prev-next{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;padding:40px 0 28px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.post-card,.topic-card{transition:none}}