:root{
    --bg:#0B0D10;
    --bg-2:#101319;
    --bg-3:#151922;
    --surface:#171B23;
    --surface-2:#1D222C;
    --surface-3:#242A35;
    --text:#F4F1EA;
    --text-2:#C5C0B7;
    --text-3:#898E98;
    --line:rgba(255,255,255,.08);
    --line-strong:rgba(255,255,255,.14);
    --primary:#C94F4F;
    --primary-2:#E06A58;
    --primary-soft:rgba(201,79,79,.14);
    --gold:#C9A86A;
    --gold-soft:rgba(201,168,106,.14);
    --ice:#6EA7B9;
    --ice-soft:rgba(110,167,185,.12);
    --success:#6E9B7D;
    --shadow:0 20px 60px rgba(0,0,0,.34);
    --shadow-soft:0 12px 32px rgba(0,0,0,.22);
    --radius:10px;
    --radius-card:16px;
    --radius-large:24px;
    --wrap:1360px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{margin:0;background:
    radial-gradient(circle at 18% 4%,rgba(110,167,185,.055),transparent 28rem),
    radial-gradient(circle at 82% 20%,rgba(201,79,79,.045),transparent 30rem),
    var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;line-height:1.65;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{color:inherit}
button,a,input{outline:none}
:focus-visible{outline:2px solid var(--ice);outline-offset:3px}
::selection{background:var(--primary);color:#fff}
.wrap{width:min(calc(100% - 40px),var(--wrap));margin-inline:auto}
.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}
.skip-link{position:fixed;z-index:1000;left:16px;top:-80px;padding:10px 14px;background:var(--text);color:var(--bg);border-radius:8px}
.skip-link:focus{top:14px}
.news-strip{height:28px;background:#090A0D;border-bottom:1px solid rgba(255,255,255,.06);font-size:12px;color:var(--text-3)}
.news-strip__inner{height:100%;display:flex;align-items:center;gap:22px;overflow:hidden;white-space:nowrap}
.news-strip b{color:var(--gold);font-weight:650}.news-strip a:hover{color:var(--text)}
.site-header{position:sticky;top:0;z-index:50;height:72px;background:rgba(11,13,16,.88);backdrop-filter:blur(18px);border-bottom:1px solid var(--line);transition:box-shadow .2s ease,background .2s ease}
.site-header.is-scrolled{box-shadow:0 10px 34px rgba(0,0,0,.24);background:rgba(9,11,14,.95)}
.header-inner{height:100%;display:flex;align-items:center;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:750;letter-spacing:.04em;white-space:nowrap}
.brand img{width:34px;height:34px;border-radius:9px;object-fit:cover;border:1px solid var(--line-strong)}
.primary-nav{display:flex;align-items:stretch;height:100%;gap:3px;flex:1;justify-content:center}
.primary-nav a{position:relative;display:flex;align-items:center;padding:0 11px;color:#B9BBC2;font-size:14px}
.primary-nav a:hover,.primary-nav a.is-active{color:var(--text)}
.primary-nav a.is-active::after{content:"";position:absolute;left:50%;bottom:11px;width:18px;height:2px;background:var(--primary);transform:translateX(-50%);border-radius:2px}
.header-actions{display:flex;align-items:center;gap:8px}
.header-link{font-size:13px;color:var(--text-2);padding:7px 5px}.header-link:hover{color:var(--gold)}
.icon-btn{border:1px solid var(--line);background:var(--surface);min-width:38px;height:38px;border-radius:10px;display:inline-grid;place-items:center;cursor:pointer}
.icon-btn:hover{background:var(--surface-2);border-color:var(--line-strong)}
.menu-toggle{display:none}
.site-main{min-height:70vh}
.drawer-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.58);z-index:68}
.site-drawer{position:fixed;z-index:70;right:0;top:0;width:min(420px,90vw);height:100dvh;background:var(--bg-2);border-left:1px solid var(--line);padding:24px;transform:translateX(105%);transition:transform .22s ease;box-shadow:var(--shadow)}
.site-drawer.is-open{transform:none}.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:9px}.drawer-grid a{padding:13px 14px;background:var(--surface);border:1px solid var(--line);border-radius:10px;color:var(--text-2)}.drawer-grid a:hover{color:var(--text);border-color:var(--gold)}
.search-modal{
    display:none;
    position:fixed;
    inset:0;
    z-index:90;
    align-items:flex-start;
    justify-content:center;
    padding:12vh 20px 30px;
    background:rgba(5,6,8,.8);
    backdrop-filter:blur(10px);
}
.search-modal.is-open{
    display:flex;
}
.search-modal[hidden]{
    display:none !important;
}
.search-dialog{width:min(760px,100%);background:var(--bg-2);border:1px solid var(--line-strong);border-radius:20px;box-shadow:var(--shadow);padding:24px}
.search-dialog__head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px}.search-dialog h2{margin:4px 0 12px;font-size:28px}.global-search{display:grid;grid-template-columns:1fr auto;gap:10px;margin-top:18px}.global-search input,.hero-search input,.filter-input{width:100%;height:50px;border:1px solid var(--line-strong);border-radius:10px;background:var(--surface);color:var(--text);padding:0 15px}.global-search input:focus,.hero-search input:focus,.filter-input:focus{border-color:var(--ice)}.search-suggestions{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.search-suggestions a{font-size:13px;color:var(--text-2);border:1px solid var(--line);padding:7px 10px;border-radius:999px}.search-suggestions a:hover{border-color:var(--ice);color:var(--text)}
.btn{display:inline-flex;min-height:44px;align-items:center;justify-content:center;padding:10px 16px;border-radius:9px;border:1px solid var(--line);font-weight:650;transition:transform .18s ease,border-color .18s ease,background .18s ease}.btn:hover{transform:translateY(-2px)}.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-2)}.btn-secondary{background:var(--surface-2);color:var(--text);border-color:var(--line-strong)}.btn-secondary:hover{border-color:var(--gold)}.btn-ice{background:var(--ice-soft);border-color:rgba(110,167,185,.28);color:#d8edf4}
.eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--gold);font-size:11px;font-weight:800;letter-spacing:.15em;text-transform:uppercase}.eyebrow::before{content:"";width:14px;height:2px;background:currentColor}.eyebrow.ice{color:var(--ice)}.eyebrow.red{color:var(--primary-2)}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:28px;margin-bottom:24px}.section-head>div{max-width:760px}.section-head h2{margin:7px 0 7px;font-size:clamp(28px,4vw,46px);line-height:1.12;letter-spacing:-.03em}.section-head p{margin:0;color:var(--text-2)}.section-head.compact h2{font-size:30px}.text-link{display:inline-flex;align-items:center;gap:8px;color:var(--text-2);white-space:nowrap}.text-link:hover{color:var(--gold)}
.home-section,.content-section{padding:72px 0;border-top:1px solid rgba(255,255,255,.045)}.home-section:nth-of-type(even){background:linear-gradient(180deg,rgba(255,255,255,.012),rgba(255,255,255,0))}.home-section.tight{padding:48px 0}.home-section.band{background:var(--bg-2);border-block:1px solid var(--line)}
.home-hero{padding:48px 0 62px;min-height:650px}.hero-grid{display:grid;grid-template-columns:5fr 4fr 3fr;gap:24px;align-items:stretch}.hero-copy,.hero-focus{padding-top:42px}.hero-kicker{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:18px}.hero-kicker span{font-size:12px;color:var(--text-2);padding:6px 9px;border:1px solid var(--line);border-radius:999px}.hero-copy h1{margin:0 0 18px;font-size:clamp(44px,5vw,72px);line-height:1.03;letter-spacing:-.045em;max-width:700px}.hero-copy>p{max-width:620px;color:var(--text-2);font-size:17px}.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin:22px 0}.hero-search{display:grid;grid-template-columns:1fr auto;gap:8px;margin-top:24px}.hero-search input{height:54px}.hero-hot{display:flex;gap:7px;flex-wrap:wrap;margin-top:12px}.hero-hot a{font-size:12px;color:var(--text-3)}.hero-hot a:hover{color:var(--ice)}
.hero-poster{position:relative;min-height:560px;border-radius:24px;overflow:hidden;border:1px solid var(--line-strong);box-shadow:var(--shadow);background:var(--surface)}.hero-poster img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/5}.hero-poster::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 46%,rgba(7,8,10,.86) 100%)}.poster-caption{position:absolute;z-index:2;left:20px;right:20px;bottom:20px}.poster-caption strong{display:block;font-size:21px}.poster-caption span{font-size:13px;color:var(--text-2)}
.hero-focus{display:flex;flex-direction:column;gap:11px}.focus-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:4px}.focus-title strong{font-size:13px;letter-spacing:.08em}.focus-title span{font-size:11px;color:var(--success)}.focus-mini{padding:14px;border:1px solid var(--line);background:rgba(23,27,35,.7);border-radius:12px}.focus-mini b{display:block;font-size:14px;margin-bottom:4px}.focus-mini p{margin:0;color:var(--text-3);font-size:12px}.editor-note{margin-top:auto;padding:16px;border-left:2px solid var(--gold);background:var(--gold-soft)}.editor-note small{color:var(--gold)}.editor-note p{margin:6px 0 0;color:var(--text-2);font-size:13px}
.page-hero{width:min(calc(100% - 40px),var(--wrap));margin:0 auto;padding:64px 0 52px;display:grid;grid-template-columns:minmax(0,1.2fr) minmax(320px,.8fr);gap:44px;align-items:center}.page-hero__copy h1{font-size:clamp(42px,6vw,70px);line-height:1.04;letter-spacing:-.045em;margin:10px 0 16px}.page-hero__copy>p{font-size:17px;color:var(--text-2);max-width:760px}.page-hero__media{max-height:430px;border-radius:var(--radius-large);overflow:hidden;border:1px solid var(--line);background:var(--surface)}.page-hero__media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.split-5-7{display:grid;grid-template-columns:5fr 7fr;gap:28px}.split-7-5{display:grid;grid-template-columns:7fr 5fr;gap:28px}.split-asym{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(280px,.5fr);gap:24px}.stack{display:grid;gap:14px}
.media-card,.tutorial-card,.note-card,.tool-card,.rank-panel,.quote-card,.mini-card,.case-row,.workflow-card,.info-panel{border:1px solid var(--line);background:var(--surface);border-radius:var(--radius-card);overflow:hidden;transition:transform .18s ease,border-color .18s ease}.media-card:hover,.tutorial-card:hover,.tool-card:hover,.case-row:hover,.mini-card:hover{transform:translateY(-3px);border-color:var(--line-strong)}.media-card__image{display:block;overflow:hidden;aspect-ratio:16/10;background:var(--surface-2)}.media-card__image img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease}.media-card:hover img{transform:scale(1.02)}.media-card__body{padding:16px}.media-card h3,.tutorial-card h3,.mini-card h3{margin:9px 0 6px;font-size:19px;line-height:1.3}.media-card p,.tutorial-card p,.mini-card p,.tool-card p,.note-card p{margin:0;color:var(--text-2);font-size:14px}.meta{font-size:12px!important;color:var(--text-3)!important;margin-bottom:7px!important}.chip{display:inline-flex;padding:4px 7px;border-radius:7px;background:var(--primary-soft);color:#efb5ae;font-size:11px}.chip.gold{background:var(--gold-soft);color:#e7c98c}.chip.ice{background:var(--ice-soft);color:#afd5e1}
.tutorial-card{padding:18px}.tutorial-card__meta{display:flex;justify-content:space-between;color:var(--text-3);font-size:11px}.tutorial-card h3{font-size:18px}.tutorial-card.is-hidden,[data-filter-item].is-hidden{display:none!important}
.focus-stream{display:grid;grid-template-columns:1.6fr 1fr 1fr;grid-template-rows:auto auto;gap:14px}.focus-stream .focus-lead{grid-row:1/3}.focus-card{position:relative;min-height:180px;border-radius:18px;overflow:hidden;border:1px solid var(--line);background:var(--surface)}.focus-card img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}.focus-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.05),rgba(0,0,0,.82))}.focus-card__copy{position:absolute;z-index:2;left:18px;right:18px;bottom:16px}.focus-card__copy span{font-size:11px;color:var(--gold)}.focus-card__copy h3{font-size:18px;margin:4px 0 0}.focus-lead{min-height:390px}.focus-lead .focus-card__copy h3{font-size:30px}
.featured-split{display:grid;grid-template-columns:1.3fr .7fr;gap:22px}.featured-image{position:relative;min-height:420px;border-radius:22px;overflow:hidden;border:1px solid var(--line)}.featured-image img{width:100%;height:100%;object-fit:cover}.featured-image__copy{position:absolute;left:0;right:0;bottom:0;padding:70px 24px 24px;background:linear-gradient(transparent,rgba(8,10,13,.93))}.featured-image__copy h3{font-size:30px;margin:8px 0}.featured-list{display:grid;gap:1px;border:1px solid var(--line);border-radius:18px;overflow:hidden;background:var(--line)}.featured-list a{background:var(--surface);padding:18px}.featured-list b{display:block;margin-bottom:4px}.featured-list span{font-size:12px;color:var(--text-3)}
.timeline{position:relative;margin-left:12px;padding-left:28px}.timeline::before{content:"";position:absolute;left:4px;top:4px;bottom:4px;width:1px;background:linear-gradient(var(--primary),var(--line))}.timeline-item{position:relative;padding:0 0 24px}.timeline-item::before{content:"";position:absolute;left:-28px;top:7px;width:9px;height:9px;border-radius:50%;background:var(--bg);border:2px solid var(--primary)}.timeline-item time{color:var(--primary-2);font-size:11px}.timeline-item h3{margin:4px 0;font-size:18px}.timeline-item p{margin:0;color:var(--text-2)}
.rail-shell{position:relative}.media-rail{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(250px,330px);gap:14px;overflow:auto;scroll-snap-type:x mandatory;padding-bottom:10px;scrollbar-width:thin}.media-rail>*{scroll-snap-align:start}.rail-controls{display:flex;gap:7px;justify-content:flex-end;margin-bottom:10px}.rail-controls button{width:36px;height:36px;border-radius:9px;border:1px solid var(--line);background:var(--surface);cursor:pointer}
.rank-dual{display:grid;grid-template-columns:1fr 1fr;gap:18px}.rank-panel{padding:20px}.rank-panel h3{margin:0 0 12px}.rank-list{display:grid;gap:2px}.rank-item{display:grid;grid-template-columns:44px 1fr auto;gap:12px;align-items:center;padding:14px 0;border-top:1px solid var(--line)}.rank-item:first-child{border-top:0}.rank-number{font-size:22px;color:var(--gold);font-variant-numeric:tabular-nums}.rank-item b{font-size:14px}.rank-item small{color:var(--text-3)}
.masonry-wall{columns:4 220px;column-gap:14px}.masonry-card{break-inside:avoid;margin-bottom:14px;position:relative;border:1px solid var(--line);background:var(--surface);border-radius:16px;overflow:hidden}.masonry-card img{width:100%;aspect-ratio:9/12;object-fit:cover}.masonry-card:nth-child(3n) img{aspect-ratio:9/10}.masonry-card:nth-child(4n) img{aspect-ratio:9/14}.masonry-card div{padding:14px}.masonry-card h3{font-size:16px;margin:0 0 5px}.masonry-card p{font-size:13px;color:var(--text-3);margin:0}
.magazine-duo{display:grid;grid-template-columns:1.1fr .9fr;gap:22px}.magazine-feature{padding:24px;border-top:1px solid var(--gold);background:linear-gradient(135deg,var(--surface),var(--bg-3))}.magazine-feature h3{font-size:34px;margin:10px 0}.magazine-feature p{color:var(--text-2)}.magazine-side{display:grid;gap:12px}.mini-card{padding:16px}
.discussion-rank{counter-reset:rank}.discussion-rank article{counter-increment:rank;display:grid;grid-template-columns:52px 1fr auto;gap:14px;padding:16px 0;border-top:1px solid var(--line)}.discussion-rank article::before{content:counter(rank,decimal-leading-zero);font-size:20px;color:var(--primary-2)}.discussion-rank article:first-child{border-top:0}.discussion-rank p{margin:4px 0 0;color:var(--text-3);font-size:13px}.discussion-rank span{color:var(--text-3);font-size:12px}
.tag-wall{display:flex;flex-wrap:wrap;gap:10px}.tag-wall a,.filter-chip{border:1px solid var(--line);background:var(--surface);color:var(--text-2);padding:10px 13px;border-radius:10px;cursor:pointer}.tag-wall a:hover,.filter-chip:hover,.filter-chip.is-active{border-color:var(--ice);color:var(--text);background:var(--ice-soft)}
.editorial-band{display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;padding:36px;border:1px solid rgba(201,168,106,.22);background:linear-gradient(110deg,rgba(201,168,106,.08),var(--surface) 50%,var(--bg-3));border-radius:22px}.editorial-band h3{font-size:34px;margin:8px 0}.editorial-band p{color:var(--text-2);max-width:760px}
.journey{display:grid;grid-template-columns:repeat(7,1fr);position:relative}.journey::before{content:"";position:absolute;top:22px;left:6%;right:6%;height:1px;background:var(--line-strong)}.journey-step{position:relative;text-align:center;padding:0 8px}.journey-step b{display:grid;place-items:center;width:44px;height:44px;margin:0 auto 10px;border-radius:50%;background:var(--surface-2);border:1px solid var(--line-strong);position:relative;z-index:1;color:var(--ice)}.journey-step span{font-size:13px;color:var(--text-2)}
.quick-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.quick-tip{display:grid;grid-template-columns:36px 1fr;gap:12px;padding:15px;border:1px solid var(--line);border-radius:12px;background:rgba(23,27,35,.75)}.quick-tip>span{color:var(--gold);font-weight:800}.quick-tip h3{margin:0 0 3px;font-size:15px}.quick-tip p{margin:0;color:var(--text-3);font-size:13px}
.workbench{display:grid;grid-template-columns:220px 1fr;gap:18px}.workbench-nav{display:grid;align-content:start;gap:8px}.workbench-nav button{padding:11px 12px;text-align:left;border:1px solid var(--line);background:var(--surface);border-radius:9px;cursor:pointer}.workbench-nav button.is-active{background:var(--ice-soft);border-color:var(--ice)}.workbench-panel{padding:22px;border:1px solid var(--line);background:var(--surface);border-radius:16px}.workbench-panel h3{margin-top:0;font-size:25px}.workbench-panel p{color:var(--text-2)}
.ai-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px}.ai-card{min-height:200px;padding:20px;border:1px solid rgba(110,167,185,.18);background:linear-gradient(160deg,var(--surface),rgba(110,167,185,.06));border-radius:16px}.ai-card h3{font-size:20px;margin:7px 0}.ai-card p{color:var(--text-2)}
.tutorial-rank{display:grid;gap:0;border-block:1px solid var(--line)}.tutorial-rank article{display:grid;grid-template-columns:60px 1fr auto auto;gap:18px;align-items:center;padding:16px 0;border-top:1px solid var(--line)}.tutorial-rank article:first-child{border-top:0}.tutorial-rank .num{font-size:28px;color:var(--gold)}.tutorial-rank small{color:var(--text-3)}
.route-map{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.route-card{padding:18px;background:var(--surface);border:1px solid var(--line);border-radius:14px;cursor:pointer}.route-card.is-current{border-color:var(--ice);background:var(--ice-soft)}.route-card span{font-size:11px;color:var(--ice)}.route-card h3{font-size:16px;margin:6px 0}.route-card p{font-size:12px;color:var(--text-3);margin:0}
.workflow-card{padding:20px}.workflow-card__top{display:flex;justify-content:space-between;gap:20px;align-items:flex-start}.workflow-card__top h3{margin:0}.workflow-card__top span{font-size:12px;color:var(--text-3)}.workflow-nodes{display:grid;grid-template-columns:repeat(6,1fr);gap:8px;list-style:none;padding:18px 0 0;margin:0}.workflow-nodes li{position:relative;padding-top:14px;border-top:1px solid var(--line);color:var(--text-3)}.workflow-nodes li::before{content:"";position:absolute;top:-4px;left:0;width:7px;height:7px;border-radius:50%;background:var(--surface-3)}.workflow-nodes li.is-current{color:var(--text)}.workflow-nodes li.is-current::before{background:var(--primary)}.workflow-nodes li span{display:block;font-size:10px}.workflow-nodes li strong{font-size:12px}
.case-list{display:grid;gap:12px}.case-row{display:grid;grid-template-columns:180px 1fr auto;gap:18px;padding:18px;align-items:center}.case-row__label{color:var(--gold);font-size:12px}.case-row h3{margin:3px 0;font-size:19px}.case-row p{margin:0;color:var(--text-3);font-size:13px}.case-row button{border:1px solid var(--line);background:var(--surface-2);padding:9px 11px;border-radius:9px;cursor:pointer}
.case-detail{display:none;margin-top:12px;padding:20px;border:1px solid var(--line);border-radius:14px;background:var(--bg-3)}.case-detail.is-open{display:grid}.case-detail dl{display:grid;grid-template-columns:130px 1fr;gap:8px 14px;margin:0}.case-detail dt{color:var(--text-3)}.case-detail dd{margin:0}
.note-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.note-card{padding:20px}.note-card blockquote{margin:0;font-size:18px;line-height:1.5}.note-card footer{margin-top:12px;color:var(--text-3);font-size:12px}
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