:root{--h:225;--ah:8;--sat:60%;--lit:58%;--radius:27px;--space:.82;--max:1163px;--bg:hsl(var(--h) 34% 8%);--panel:hsl(var(--h) 25% 13%);--ink:hsl(var(--h) 20% 96%);--muted:hsl(var(--h) 14% 70%);--accent:hsl(var(--ah) var(--sat) var(--lit));--line:hsl(var(--h) 20% 28%)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.75 system-ui,-apple-system,"Microsoft YaHei",sans-serif}body.light{--bg:hsl(var(--h) 35% 96%);--panel:white;--ink:hsl(var(--h) 35% 11%);--muted:hsl(var(--h) 12% 38%);--line:hsl(var(--h) 18% 82%)}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}button{cursor:pointer}.shell{width:min(var(--max),92vw);margin:auto}.topbar{display:flex;align-items:center;gap:22px;padding:20px 0;border-bottom:1px solid var(--line);position:relative;z-index:4}.brand{font-weight:900;letter-spacing:.06em;margin-right:auto}.nav{display:flex;gap:18px;align-items:center}.nav a,.tool{color:var(--muted)}.tool{border:1px solid var(--line);background:var(--panel);border-radius:999px;padding:7px 11px}.nav-toggle{display:none;align-items:center;justify-content:center;line-height:1}.nav-backdrop{display:none;position:fixed;inset:0;background:#0008;z-index:15}.nav-backdrop.open{display:block}.hero{position:relative;display:grid;gap:clamp(28px,5vw,70px);align-items:center;padding:calc(54px * var(--space)) 0;overflow:hidden}.hero-copy{position:relative}.eyebrow,.kicker{color:var(--accent);font-weight:800;letter-spacing:.15em;text-transform:uppercase}h1{font-size:clamp(38px,5.2vw,70px);line-height:1.08;letter-spacing:-.035em;margin:14px 0 22px;overflow-wrap:anywhere}h2{line-height:1.25}.lead{font-size:clamp(17px,2vw,20px);color:var(--muted);max-width:780px}.hero-art{min-height:360px;border:1px solid var(--line);border-radius:calc(var(--radius) + 12px);background:linear-gradient(145deg,color-mix(in srgb,var(--accent) 22%,transparent),var(--panel));overflow:hidden;display:grid;place-items:center;position:relative}.hero-art img{width:100%;height:100%;object-fit:cover}.section{padding:calc(44px * var(--space)) 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:24px}.section-head p,.muted{color:var(--muted)}.cards{display:grid;gap:18px}.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:calc(25px * var(--space));transition:transform .2s,border-color .2s}.card:hover{transform:translateY(-3px);border-color:var(--accent)}.card-index{font-weight:900;color:var(--accent)}.card p{color:var(--muted)}.article{width:min(760px,92vw);margin:auto;padding:56px 0}.article h1{font-size:clamp(34px,5vw,58px)}.article-figure{margin:24px 0;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}.article-figure img{width:100%;display:block;object-fit:cover;max-height:420px}.article-body{font-size:18px}.article-body p{margin:1.2em 0}.crumbs{color:var(--muted);font-size:14px}.actions{display:flex;gap:10px;flex-wrap:wrap;margin:28px 0}.button{display:inline-block;background:var(--accent);color:hsl(var(--h) 40% 8%);border:0;border-radius:999px;padding:10px 17px;font-weight:800}.button.secondary{background:var(--panel);color:var(--ink);border:1px solid var(--line)}details{padding:16px 0;border-bottom:1px solid var(--line)}summary{font-weight:750;cursor:pointer}.search-layer{position:fixed;inset:0;background:#000b;z-index:20;display:none;padding:8vh 5vw}.search-layer.open{display:block}.search-box{max-width:760px;margin:auto;background:var(--panel);border:1px solid var(--line);padding:24px;border-radius:var(--radius)}.search-box input,.form input,.form textarea{width:100%;border:1px solid var(--line);background:var(--bg);color:var(--ink);border-radius:8px;padding:12px}.result{display:block;padding:14px 0;border-bottom:1px solid var(--line)}.form{display:grid;gap:14px;max-width:680px}.form label{display:grid;gap:5px}.hp{position:absolute;left:-9999px}footer{border-top:1px solid var(--line);padding:28px 0 40px;color:var(--muted);margin-top:50px}.hero{grid-template-columns:.65fr 1.35fr}.hero-copy{order:2;padding-left:4vw}.cards{grid-template-columns:repeat(3,1fr)}.card:nth-child(2){grid-row:span 2}
.card{border-width:1px 0 0;border-radius:0;background:transparent}.hero-art{border-radius:0}.topbar{align-items:flex-start}.nav{border-left:1px solid var(--line);padding-left:20px}
h1,h2,.brand{font-family:Inter,system-ui,"Microsoft YaHei",sans-serif}h1{font-size:clamp(36px,4.3vw,58px);line-height:1.1;letter-spacing:-.025em}
@media(max-width:800px){.nav-toggle{display:inline-flex}.nav{position:fixed;top:0;right:-100%;bottom:0;width:min(80vw,320px);flex-direction:column;align-items:flex-start;gap:22px;padding:88px 26px 26px;background:var(--panel);border-left:1px solid var(--line);transition:right .25s ease;z-index:16}.nav.open{right:0}.nav a{display:block;font-size:16px}.hero,.cards,.card{grid-template-columns:1fr!important}.card{grid-column:auto!important;transform:none!important}.hero-art{min-height:260px;position:relative}h1{font-size:clamp(32px,9vw,46px)}}

/* AI-generated per-site template layer */
body{margin:0;background:#1E2228;color:#F5F7FA;font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",sans-serif;font-size:14px;line-height:1.6;-webkit-font-smoothing:antialiased}
.topbar{position:sticky;top:0;z-index:50;height:64px;display:flex;align-items:center;gap:18px;padding:0 22px;background:rgba(30,34,40,.94);backdrop-filter:blur(10px);border-bottom:1px solid #2F353E}
.brand{flex:0 0 auto;font-family:"Arial Narrow","Roboto Condensed","Helvetica Neue",sans-serif;font-weight:700;font-size:18px;letter-spacing:.5px;color:#fff;white-space:nowrap}
.brand span{color:#3D5AFE}
.nav{flex:1 1 auto;display:flex;align-items:center;gap:2px;overflow-x:auto;scrollbar-width:none}
.nav::-webkit-scrollbar{display:none}
.nav a{padding:8px 12px;font-size:13px;color:#9AA7B4;text-decoration:none;white-space:nowrap;border-bottom:2px solid transparent;transition:color .15s,border-color .15s}
.nav a:hover{color:#F5F7FA;border-bottom-color:#3D5AFE}
.hero{display:grid;grid-template-columns:1.5fr 1fr;gap:14px;padding:18px 22px 14px;max-width:1280px;margin:0 auto}
.hero-copy{background:#2F353E;border:1px solid #3A414B;border-radius:10px;padding:22px 24px;display:flex;flex-direction:column;gap:14px;position:relative;overflow:hidden}
.hero-copy::before{content:"";position:absolute;top:0;left:0;width:4px;height:100%;background:#3D5AFE}
.hero-copy h1{margin:0;font-family:"Arial Narrow","Roboto Condensed",sans-serif;font-weight:700;font-size:30px;line-height:1.15;letter-spacing:.3px;color:#fff}
.hero-copy h1 em{font-style:normal;color:#3D5AFE}
.hero-copy .lead{margin:0;font-size:14px;line-height:1.7;color:#C8D0DA}
.hero-copy .lead b{color:#FF6B5B;font-weight:600}
.hero-copy .meta{font-size:12px;color:#9AA7B4;display:flex;gap:14px;flex-wrap:wrap;margin-top:auto}
.hero-art{display:grid;grid-template-rows:1fr 1fr;gap:14px}
.hero-art .card{padding:16px 18px}
.hero-art h3{margin:0 0 10px;font-family:"Arial Narrow","Roboto Condensed",sans-serif;font-size:16px;color:#3D5AFE;letter-spacing:.4px}
.hero-art .row{display:flex;justify-content:space-between;padding:5px 0;border-bottom:1px solid #3A414B;font-size:13px}
.hero-art .row:last-child{border-bottom:none}
.hero-art .row span:first-child{color:#9AA7B4}
.hero-art .row span:last-child{color:#F5F7FA;font-family:"Roboto Condensed",sans-serif}
.hero-art .pick{display:flex;align-items:center;gap:10px;padding:7px 0;border-bottom:1px solid #3A414B}
.hero-art .pick:last-child{border-bottom:none}
.hero-art .pick i{width:34px;height:34px;border-radius:50%;background:#3A414B;display:grid;place-items:center;color:#3D5AFE;font-style:normal;font-weight:700;font-size:13px}
.hero-art .pick b{font-size:13px;color:#fff;font-weight:600}
.hero-art .pick small{display:block;color:#9AA7B4;font-size:11px}
.section{max-width:1280px;margin:0 auto;padding:26px 22px;border-top:1px solid #2F353E}
.section h2{margin:0 0 16px;font-family:"Arial Narrow","Roboto Condensed",sans-serif;font-size:22px;font-weight:700;letter-spacing:.5px;color:#fff;display:flex;align-items:center;gap:10px}
.section h2::after{content:"";width:36px;height:3px;background:#3D5AFE;border-radius:2px}
.section h2 small{font-size:12px;color:#9AA7B4;font-weight:400;letter-spacing:0}
.cards{display:grid;gap:12px}
.cards.faq{grid-template-columns:1fr 1fr}
.cards.topics{grid-template-columns:repeat(5,1fr)}
.cards.guide{grid-template-columns:1fr}
.cards.latest{grid-template-columns:1fr}
.card{background:#2F353E;border:1px solid transparent;border-radius:10px;padding:16px 18px;transition:border-color .15s,transform .15s;position:relative}
.card:hover{border-color:#3D5AFE;transform:translateY(-2px)}
.card h3{margin:0 0 6px;font-family:"Arial Narrow","Roboto Condensed",sans-serif;font-size:15px;color:#F5F7FA;letter-spacing:.3px}
.card p{margin:0;font-size:13px;line-height:1.6;color:#9AA7B4}
.card .tag{display:inline-block;margin:8px 6px 0 0;padding:2px 8px;border-radius:4px;background:rgba(61,90,254,.16);color:#8BA0FF;font-size:11px;font-family:"Roboto Condensed",sans-serif;letter-spacing:.4px}
.card .num{color:#FF6B5B;font-family:"Roboto Condensed",sans-serif;font-weight:700}
.card summary{cursor:pointer;color:#3D5AFE;font-size:14px;font-weight:600;list-style:none;display:flex;justify-content:space-between;align-items:center}
.card summary::-webkit-details-marker{display:none}
.card summary::after{content:"+";color:#FF6B5B;font-size:18px;font-weight:700}
.card[open] summary::after{content:"–"}
.card[open]{background:#3A414B}
.card[open] summary{margin-bottom:8px}
.card.guide-l{display:grid;grid-template-columns:1.6fr 1fr;gap:18px;align-items:center}
.card.guide-r{display:grid;grid-template-columns:1fr 1.6fr;gap:18px;align-items:center}
.card.guide-w{display:grid;grid-template-columns:1fr;gap:8px}
.card.guide-w h3{font-size:18px}
.card .thumb{width:100%;height:140px;background:linear-gradient(135deg,#3D5AFE 0%,#FF6B5B 100%);border-radius:8px;opacity:.85}
.latest .item{display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:center;padding:11px 0;border-bottom:1px solid #3A414B}
.latest .item:last-child{border-bottom:none}
.latest .item::before{content:"";width:7px;height:7px;border-radius:50%;background:#3D5AFE}
.latest .item .t{font-size:14px;color:#F5F7FA;font-weight:500}
.latest .item .d{font-size:12px;color:#9AA7B4;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:340px}
.latest .item a{color:#FF6B5B;font-size:12px;text-decoration:none;white-space:nowrap}
.latest .item a:hover{text-decoration:underline}
.article{max-width:760px;margin:0 auto;padding:30px 22px 50px}
.article h1{margin:6px 0 10px;font-family:"Arial Narrow","Roboto Condensed",sans-serif;font-weight:700;font-size:30px;line-height:1.2;color:#fff;letter-spacing:.3px}
.article .crumb{font-size:12px;color:#9AA7B4}
.article .crumb a{color:#3D5AFE;text-decoration:none}
.article .crumb a:hover{color:#FF6B5B}
.article .meta{font-size:12px;color:#9AA7B4;margin-bottom:18px;display:flex;gap:14px;flex-wrap:wrap}
.article .toc{background:#2F353E;border-left:3px solid #3D5AFE;border-radius:6px;padding:12px 16px;margin-bottom:24px;font-size:13px}
.article .toc a{color:#8BA0FF;text-decoration:none;margin-right:14px;display:inline-block}
.article .toc a:hover{color:#FF6B5B}
.article-body{font-size:15px;line-height:1.78;color:#E8EDF2}
.article-body h2{font-family:"Arial Narrow","Roboto Condensed",sans-serif;font-size:20px;color:#3D5AFE;margin:26px 0 12px;letter-spacing:.3px}
.article-body p{margin:0 0 16px}
.article-body b{color:#FF6B5B;font-weight:600}
.article-body blockquote{margin:18px 0;padding:12px 16px;background:#2F353E;border-left:3px solid #3D5AFE;border-radius:6px;color:#C8D0DA;font-size:14px}
.article-body table{width:100%;border-collapse:collapse;margin:18px 0;font-size:13px;background:#2F353E;border-radius:8px;overflow:hidden}
.article-body th{background:#3D5AFE;color:#fff;padding:10px 12px;text-align:left;font-family:"Roboto Condensed",sans-serif;letter-spacing:.4px}
.article-body td{padding:9px 12px;border-bottom:1px solid #3A414B;color:#E8EDF2}
.article-body tr:last-child td{border-bottom:none}
.article-body figure{margin:20px 0}
.article-body figcaption{font-size:12px;color:#9AA7B4;margin-top:6px;text-align:center}
.article .related{margin-top:34px;padding-top:20px;border-top:1px solid #3A414B}
.article .related h3{font-family:"Arial Narrow","Roboto Condensed",sans-serif;font-size:16px;color:#3D5AFE;margin:0 0 10px}
.article .related a{display:block;padding:7px 0;color:#F5F7FA;text-decoration:none;font-size:14px;border-bottom:1px solid #2F353E}
.article .related a:hover{color:#FF6B5B}
.button{display:inline-flex;align-items:center;justify-content:center;padding:9px 18px;border-radius:8px;font-size:13px;font-weight:600;font-family:"Roboto Condensed",sans-serif;letter-spacing:.5px;text-decoration:none;cursor:pointer;border:none;min-height:44px;transition:filter .15s,transform .15s}
.button:hover{transform:translateY(-1px);filter:brightness(1.1)}
.button.primary{background:#3D5AFE;color:#fff}
.button.secondary{background:transparent;color:#3D5AFE;border:1px solid #3D5AFE}
.button.emphasis{background:#FF6B5B;color:#1E2228}
footer{background:#262B33;border-top:1px solid #2F353E;padding:24px 22px;font-size:12px;color:#9AA7B4;text-align:center;line-height:1.7}
footer a{color:#3D5AFE;text-decoration:none}
footer a:hover{color:#FF6B5B}
@media(max-width:767px){
.topbar{height:56px;padding:0 14px;gap:10px}
.brand{font-size:15px;flex:1 1 auto}
.brand small{display:none}
.nav{position:fixed;left:0;right:0;bottom:0;top:56px;flex-direction:column;background:#1E2228;padding:14px;gap:2px;transform:translateX(100%);transition:transform .25s;z-index:60}
.nav.open{transform:translateX(0)}
.nav a{padding:14px 12px;font-size:15px;border-bottom:1px solid #2F353E}
.hero{grid-template-columns:1fr;padding:12px 14px;gap:10px}
.hero-copy{padding:16px;order:1}
.hero-copy h1{font-size:22px}
.hero-copy .lead{font-size:13px}
.hero-art{order:2}
.hero-art .card{padding:12px 14px}
.hero-art h3{font-size:14px}
.section{padding:18px 14px}
.section h2{font-size:18px}
.cards.faq,.cards.topics{grid-template-columns:1fr}
.cards.topics{grid-template-columns:1fr 1fr}
.card.guide-l,.card.guide-r{grid-template-columns:1fr}
.card .thumb{height:100px}
.latest .item{grid-template-columns:auto 1fr;gap:8px}
.latest .item .d{display:none}
.latest .item a{grid-column:2;margin-top:4px}
.article{padding:18px 14px 30px}
.article h1{font-size:22px}
.article-body{font-size:15px;line-height:1.75}
.article-body h2{font-size:18px}
.article-body table{font-size:12px;display:block;overflow-x:auto;white-space:nowrap}
.button{width:100%;margin:4px 0}
}
@media(min-width:768px) and (max-width:1199px){
.hero{grid-template-columns:1.3fr 1fr}
.cards.topics{grid-template-columns:repeat(3,1fr)}
.cards.faq{grid-template-columns:1fr 1fr}
.card.guide-l,.card.guide-r{grid-template-columns:1fr 1fr}
}