/* Final visual-shell contract: dark homepage, bright tools, fixed white-glass navigation. */
:root{--acheng-light-paper:#f5f5f7;--acheng-light-ink:#1d1d1f;--acheng-orange:#fa7900}
html,body,button,input,select,textarea{font-family:MiSans,sans-serif!important}

/* All global navigation bars occupy the viewport edge and reserve their own page space. */
.acheng-site-header{
  position:fixed!important; inset:0 0 auto!important; z-index:1000!important; min-height:72px!important;
  background:rgba(255,255,255,.78)!important; border-bottom:1px solid rgba(29,29,31,.10)!important;
  box-shadow:0 10px 28px rgba(31,31,31,.10)!important;
  backdrop-filter:blur(26px) saturate(1.1)!important; -webkit-backdrop-filter:blur(26px) saturate(1.1)!important;
}
.acheng-site-header>div{width:100%!important;max-width:none!important;min-height:72px!important;margin:0!important;padding-inline:clamp(16px,2.5vw,40px)!important}
.acheng-site-header .logo-link{margin-right:auto!important}
.acheng-site-header .logo-icon,body.acheng-route-home .acheng-site-header .logo-icon{background:url("../brand-assets/v1.1/assets/logo-transparent.png") center/contain no-repeat!important}
.acheng-site-header .logo-text{color:#1d1d1f!important}.acheng-site-header .logo-subtitle{color:rgba(29,29,31,.52)!important}
.acheng-site-header .acheng-nav-pill{margin-left:auto!important;padding:5px!important;border:1px solid rgba(255,255,255,.82)!important;border-radius:15px!important;background:rgba(255,255,255,.50)!important;box-shadow:inset 0 1px 0 rgba(255,255,255,.88),0 8px 20px rgba(29,29,31,.08)!important;backdrop-filter:blur(18px) saturate(1.06)!important;-webkit-backdrop-filter:blur(18px) saturate(1.06)!important}
.acheng-site-header .acheng-nav-link{min-height:35px!important;padding:0 13px!important;border-radius:10px!important;color:#1d1d1f!important;font-size:13px!important;font-weight:700!important}
.acheng-site-header .acheng-nav-link:hover,.acheng-site-header .acheng-nav-link.is-active{background:#1d1d1f!important;color:#fff!important}

/* Homepage alone is the dark presentation layer. */
body.acheng-route-home,body.acheng-route-home #app{background:#070806!important}
body.acheng-route-home .acheng-platform-main{padding-top:72px!important;background:radial-gradient(ellipse at 76% 7%,rgba(250,121,0,.13),transparent 33%),#070806!important}
body.acheng-route-home .acheng-stage-visual,body.acheng-route-home .acheng-hero-image{will-change:transform,opacity}
body.acheng-route-home .acheng-public-tool,body.acheng-route-home .acheng-workbench-teaser{will-change:transform,opacity}
body.acheng-route-home .acheng-stage-visual::after,body.acheng-route-home .acheng-hero-image{animation:none!important}

/* Editors, framed tools and the workbench return to a bright paper workspace. */
body.acheng-route-editor,body.acheng-route-components,body.acheng-route-module:not(.acheng-route-home),body.acheng-workbench-active{background:var(--acheng-light-paper)!important;color:var(--acheng-light-ink)!important}
body.acheng-route-editor #app,body.acheng-route-components #app,body.acheng-route-module:not(.acheng-route-home) #app,body.acheng-workbench-active #app{min-height:100vh!important;background:radial-gradient(ellipse at 88% 0%,rgba(250,121,0,.09),transparent 31%),var(--acheng-light-paper)!important}
body.acheng-route-module:not(.acheng-route-home) .acheng-module-main{padding-top:72px!important;background:transparent!important}
.acheng-site-header+main{padding-top:72px!important}

/* The editor secondary switcher is a separate layer: it must not change global-nav height. */
@media (min-width:761px){
  body.acheng-has-editor-subnav .acheng-site-header,
  body.acheng-has-editor-subnav .acheng-site-header>div{height:72px!important;min-height:72px!important}
  body.acheng-has-editor-subnav .acheng-site-header>div{flex-wrap:nowrap!important;padding-bottom:0!important}
}
body.acheng-has-editor-subnav .acheng-editor-subnav{position:fixed!important;inset:72px 0 auto!important;z-index:999!important;height:40px!important;background:rgba(255,255,255,.78)!important;border-bottom:1px solid rgba(29,29,31,.08)!important;box-shadow:0 10px 22px rgba(31,31,31,.06)!important;backdrop-filter:blur(20px) saturate(1.08)!important;-webkit-backdrop-filter:blur(20px) saturate(1.08)!important}
body.acheng-has-editor-subnav .acheng-editor-subnav-inner{height:40px!important;max-width:none!important;padding:2px clamp(16px,2.5vw,40px)!important;justify-content:flex-end!important}
body.acheng-route-editor.acheng-has-editor-subnav #app>.acheng-site-header+.flex.flex-col.h-screen{padding-top:112px!important}

/* The workbench owns a separate header, but follows the same fixed white-glass rules. */
.acheng-workbench-active,.acheng-workbench-active #app{background:var(--acheng-light-paper)!important}
.acheng-wb-header{position:fixed!important;inset:0 0 auto!important;z-index:1000!important;height:72px!important;background:rgba(255,255,255,.78)!important;border-bottom:1px solid rgba(29,29,31,.10)!important;box-shadow:0 10px 28px rgba(31,31,31,.10)!important;backdrop-filter:blur(26px) saturate(1.1)!important;-webkit-backdrop-filter:blur(26px) saturate(1.1)!important}
.acheng-wb-header-inner{height:72px!important;max-width:none!important;padding-inline:clamp(16px,2.5vw,40px)!important}.acheng-wb-brand{margin-right:auto!important;color:#1d1d1f!important}.acheng-wb-brand-mark{background:url("../brand-assets/v1.1/assets/logo-transparent.png") center/contain no-repeat!important;color:transparent!important}.acheng-wb-global-nav{margin-left:auto!important;background:rgba(255,255,255,.50)!important;border:1px solid rgba(255,255,255,.82)!important;box-shadow:inset 0 1px 0 rgba(255,255,255,.88),0 8px 20px rgba(29,29,31,.08)!important;backdrop-filter:blur(18px)!important}.acheng-wb-global-link{color:#1d1d1f!important}.acheng-wb-global-link:hover,.acheng-wb-global-link.is-active{background:#1d1d1f!important;color:#fff!important}.acheng-wb-shell{padding-top:72px!important}.acheng-wb-main{background:radial-gradient(ellipse at 88% 0%,rgba(250,121,0,.09),transparent 31%),var(--acheng-light-paper)!important}

@media (max-width:760px){
  .acheng-site-header,.acheng-site-header>div{min-height:100px!important}.acheng-site-header>div{padding:8px 12px!important;gap:6px!important}.acheng-site-header .logo-link{width:100%!important}.acheng-site-header .logo-icon{width:32px!important;height:32px!important;flex-basis:32px!important}.acheng-site-header .logo-subtitle{display:none!important}.acheng-site-header .acheng-nav-pill{order:2!important;width:100%!important;max-width:none!important;margin-left:0!important;flex:0 0 100%!important}.acheng-site-header .acheng-nav-link{flex:1 0 auto!important;justify-content:center!important;min-height:32px!important;padding:0 8px!important;font-size:12px!important}
  body.acheng-route-home .acheng-platform-main,body.acheng-route-module:not(.acheng-route-home) .acheng-module-main,.acheng-site-header+main{padding-top:100px!important}
  body.acheng-has-editor-subnav .acheng-site-header{height:100px!important;min-height:100px!important}
  body.acheng-has-editor-subnav .acheng-editor-subnav{inset:100px 0 auto!important;height:42px!important}
  body.acheng-has-editor-subnav .acheng-editor-subnav-inner{height:42px!important;padding:3px 12px!important}
  body.acheng-route-editor.acheng-has-editor-subnav #app>.acheng-site-header+.flex.flex-col.h-screen{padding-top:142px!important}
}
@media (max-width:820px){.acheng-wb-header,.acheng-wb-header-inner{height:52px!important}.acheng-wb-header-inner{padding-inline:12px!important}.acheng-wb-shell{padding-top:52px!important}.acheng-wb-sidebar{top:52px!important}}
@media (prefers-reduced-transparency:reduce){.acheng-site-header,.acheng-site-header .acheng-nav-pill,.acheng-wb-header,.acheng-wb-global-nav{background:#fff!important;backdrop-filter:none!important;-webkit-backdrop-filter:none!important}}

/* Short-video topic desk: a light editorial workspace, not a generic dashboard. */
.acheng-vt-page,.acheng-vtd-page{max-width:1200px;margin:0 auto;color:#1d1d1f}
.acheng-vt-head{display:grid;grid-template-columns:minmax(0,1fr) 210px;gap:36px;align-items:end;padding:12px 0 28px;border-bottom:1px solid rgba(29,29,31,.12)}
.acheng-vt-eyebrow{margin:0 0 12px;color:#d96500;font-size:11px;font-weight:800;letter-spacing:.13em}
.acheng-vt-head h1,.acheng-vtd-head h1{max-width:760px;margin:0;color:#1d1d1f;font-size:clamp(34px,4.1vw,54px);font-weight:750;line-height:1.08;letter-spacing:-.075em}
.acheng-vt-intro,.acheng-vtd-head>div>p:last-child{max-width:680px;margin:18px 0 0;color:#6f7073;font-size:15px;line-height:1.78}
.acheng-vt-overview{display:grid;gap:3px;align-self:stretch;align-content:end;padding:17px 0 4px 20px;border-left:1px solid rgba(29,29,31,.12)}
.acheng-vt-overview span,.acheng-vt-overview em{color:#76767a;font-size:11px;font-style:normal}.acheng-vt-overview strong{font-size:36px;line-height:1;font-weight:750;letter-spacing:-.06em}.acheng-vt-overview strong i{font-size:13px;font-style:normal;letter-spacing:0}
.acheng-vt-toolbar{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:22px 0 18px}.acheng-vt-toolbar>p{flex:0 0 auto;margin:0;color:#77787b;font-size:12px}.acheng-vt-toolbar>p b{color:#e26a00;font-size:15px}
.acheng-vt-filter{display:flex;gap:7px;flex-wrap:wrap}.acheng-vt-filter button{border:1px solid rgba(29,29,31,.12);border-radius:999px;background:rgba(255,255,255,.64);box-shadow:inset 0 1px rgba(255,255,255,.92);color:#55565a;font:700 12px MiSans,sans-serif;line-height:1;padding:9px 13px;cursor:pointer;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}.acheng-vt-filter button:hover{border-color:rgba(225,102,0,.42);color:#c75b00}.acheng-vt-filter button.is-active{border-color:#1d1d1f;background:#1d1d1f;color:#fff;box-shadow:none}
.acheng-vt-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.acheng-vt-card{position:relative;display:flex;min-height:268px;flex-direction:column;overflow:hidden;padding:22px 23px 20px;border:1px solid rgba(29,29,31,.13);border-radius:19px;background:linear-gradient(135deg,rgba(255,255,255,.86),rgba(246,246,248,.62));box-shadow:0 16px 34px rgba(35,36,39,.055),inset 0 1px rgba(255,255,255,.96);color:#1d1d1f;text-decoration:none;backdrop-filter:blur(18px) saturate(1.08);-webkit-backdrop-filter:blur(18px) saturate(1.08);will-change:transform,opacity}.acheng-vt-card:before{position:absolute;inset:0 auto 0 0;width:3px;background:linear-gradient(#ff8b30,#f06c00);content:""}.acheng-vt-card:hover{border-color:rgba(225,102,0,.45);box-shadow:0 20px 38px rgba(35,36,39,.10),inset 0 1px rgba(255,255,255,.98)}
.acheng-vt-card-top,.acheng-vt-card-foot{display:flex;align-items:center;justify-content:space-between;gap:14px}.acheng-vt-index{color:#e06600;font-size:12px;font-weight:800;letter-spacing:.08em}.acheng-vt-status{display:inline-flex;align-items:center;border:1px solid rgba(29,29,31,.14);border-radius:99px;color:#68696d;font-size:11px;font-weight:700;line-height:1;padding:6px 8px;background:rgba(255,255,255,.44)}.acheng-vt-status.is-ready{border-color:rgba(229,101,0,.32);color:#ce5d00;background:rgba(255,244,235,.8)}
.acheng-vt-category{margin:23px 0 8px;color:#a06127;font-size:12px;font-weight:800}.acheng-vt-card h2{max-width:530px;margin:0;color:#242427;font-size:clamp(20px,2vw,25px);font-weight:750;line-height:1.22;letter-spacing:-.045em}.acheng-vt-summary{margin:11px 0 0;color:#6b6c70;font-size:13px;line-height:1.7}.acheng-vt-signals{display:flex;gap:6px;flex-wrap:wrap;margin-top:auto;padding-top:16px}.acheng-vt-signals span{padding:5px 7px;border-radius:6px;background:rgba(31,32,34,.055);color:#747579;font-size:10px}.acheng-vt-card-foot{margin-top:15px;padding-top:13px;border-top:1px solid rgba(29,29,31,.09);color:#8b8b8e;font-size:11px}.acheng-vt-card-foot b{color:#35363a;font-size:12px}.acheng-vt-card-foot i{margin-left:4px;color:#e06600;font-size:16px;font-style:normal}.acheng-vt-footnote{margin:20px 0 0;color:#8d8d90;font-size:11px}
.acheng-vtd-page{padding-top:2px}.acheng-vtd-back{display:inline-flex;gap:8px;align-items:center;margin-bottom:28px;color:#57585b;font-size:12px;font-weight:700;text-decoration:none}.acheng-vtd-back:hover{color:#d45f00}.acheng-vtd-back i{font-size:17px;font-style:normal}.acheng-vtd-head{display:flex;align-items:flex-start;justify-content:space-between;gap:26px;padding-bottom:27px;border-bottom:1px solid rgba(29,29,31,.12)}.acheng-vtd-head .acheng-vt-status{margin-top:4px;flex:0 0 auto}
.acheng-vtd-layout{display:grid;grid-template-columns:minmax(0,1fr) 276px;gap:44px;padding-top:30px}.acheng-vtd-content{min-width:0}.acheng-vtd-content>section{padding:0 0 30px;margin-bottom:29px;border-bottom:1px solid rgba(29,29,31,.11)}.acheng-vtd-content>section:last-child{margin-bottom:0;border:0}.acheng-vtd-label,.acheng-vtd-side>div>p{margin:0 0 10px;color:#d96500;font-size:11px;font-weight:800;letter-spacing:.11em}.acheng-vtd-content h2{max-width:670px;margin:0;color:#242427;font-size:25px;font-weight:750;letter-spacing:-.045em}.acheng-vtd-content>section>p:last-child{max-width:730px;margin:14px 0 0;color:#66676b;font-size:14px;line-height:1.82}.acheng-vtd-steps{display:grid;gap:0;margin:17px 0 0;padding:0;list-style:none;border-top:1px solid rgba(29,29,31,.11)}.acheng-vtd-steps li{display:grid;grid-template-columns:106px minmax(0,1fr);gap:18px;padding:15px 0;border-bottom:1px solid rgba(29,29,31,.11)}.acheng-vtd-steps span{color:#a15f29;font-size:11px;font-weight:800}.acheng-vtd-steps p{margin:0;color:#36373a;font-size:14px;line-height:1.65}.acheng-vtd-side{align-self:start;display:grid;gap:12px}.acheng-vtd-meta,.acheng-vtd-material{padding:18px;border:1px solid rgba(29,29,31,.12);border-radius:15px;background:rgba(255,255,255,.62);box-shadow:inset 0 1px rgba(255,255,255,.92);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}.acheng-vtd-meta dl{display:grid;gap:11px;margin:0}.acheng-vtd-meta dl div{display:grid;gap:3px}.acheng-vtd-meta dt{color:#8a8b8e;font-size:10px}.acheng-vtd-meta dd{margin:0;color:#35363a;font-size:12px;font-weight:700;line-height:1.5}.acheng-vtd-material ul{display:grid;gap:8px;margin:0;padding:0;list-style:none}.acheng-vtd-material li{position:relative;padding-left:12px;color:#606166;font-size:12px;line-height:1.55}.acheng-vtd-material li:before{position:absolute;left:0;top:.52em;width:4px;height:4px;border-radius:50%;background:#e06600;content:""}.acheng-vtd-copy{width:100%;padding:13px 15px;border:1px solid #1d1d1f;border-radius:13px;background:#1d1d1f;color:#fff;font:750 12px MiSans,sans-serif;text-align:left;cursor:pointer}.acheng-vtd-copy:hover{background:#d96500;border-color:#d96500}.acheng-vtd-copy.is-copied{background:#31785a;border-color:#31785a}.acheng-vtd-copy i{float:right;font-size:15px;font-style:normal}
@media (max-width:820px){.acheng-vt-head{grid-template-columns:1fr;gap:16px;padding-top:4px}.acheng-vt-overview{display:flex;align-items:baseline;gap:9px;padding:12px 0 0;border-top:1px solid rgba(29,29,31,.11);border-left:0}.acheng-vt-overview strong{font-size:26px}.acheng-vt-toolbar{align-items:flex-start;flex-direction:column;padding:18px 0 14px}.acheng-vt-grid{grid-template-columns:1fr}.acheng-vt-card{min-height:0;padding:19px 19px 17px}.acheng-vt-category{margin-top:19px}.acheng-vt-card h2{font-size:22px}.acheng-vt-summary{font-size:13px}.acheng-vtd-back{margin-bottom:21px}.acheng-vtd-head{display:block}.acheng-vtd-head .acheng-vt-status{margin-top:16px}.acheng-vtd-layout{grid-template-columns:1fr;gap:16px;padding-top:24px}.acheng-vtd-content h2{font-size:22px}.acheng-vtd-steps li{grid-template-columns:72px minmax(0,1fr);gap:12px}.acheng-vtd-side{grid-template-columns:1fr 1fr}.acheng-vtd-copy{grid-column:1/-1}.acheng-vtd-meta,.acheng-vtd-material{padding:15px}}
@media (max-width:500px){.acheng-vt-head h1,.acheng-vtd-head h1{font-size:32px}.acheng-vt-filter{gap:6px}.acheng-vt-filter button{padding:8px 10px;font-size:11px}.acheng-vtd-side{grid-template-columns:1fr}.acheng-vtd-copy{grid-column:auto}.acheng-vtd-steps li{grid-template-columns:1fr;gap:4px}.acheng-vtd-steps span{font-size:10px}}

/* Short-video explosive-topic library: dense research table, not a feature-card wall. */
.acheng-vt-page{max-width:1320px}.acheng-vt-head{grid-template-columns:minmax(0,1fr) 182px}.acheng-vt-table{overflow:hidden;border:1px solid rgba(29,29,31,.13);border-radius:17px;background:rgba(255,255,255,.6);box-shadow:0 16px 34px rgba(35,36,39,.045),inset 0 1px rgba(255,255,255,.95);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}
.acheng-vt-table-head,.acheng-vt-row{display:grid;grid-template-columns:50px minmax(290px,2.2fr) 88px 104px 112px 100px 108px 112px 48px;gap:12px;align-items:center}.acheng-vt-table-head{min-height:43px;padding:0 18px;border-bottom:1px solid rgba(29,29,31,.11);background:rgba(29,29,31,.035);color:#88898d;font-size:10px;font-weight:800;letter-spacing:.04em}.acheng-vt-row{position:relative;min-height:82px;padding:10px 18px;border-bottom:1px solid rgba(29,29,31,.09);color:#35363a;text-decoration:none;transition:border-color .2s ease,background .2s ease}.acheng-vt-row:last-child{border-bottom:0}.acheng-vt-row:before{position:absolute;inset:0 auto 0 0;width:2px;background:#f37700;content:"";opacity:0;transition:opacity .18s ease}.acheng-vt-row:hover{background:rgba(255,255,255,.82);border-color:rgba(243,119,0,.26)}.acheng-vt-row:hover:before{opacity:1}.acheng-vt-row-no{color:#df6700;font-size:11px;font-weight:800}.acheng-vt-row-title{display:grid;gap:5px;min-width:0}.acheng-vt-row-title b{overflow:hidden;color:#252629;font-size:14px;font-weight:750;line-height:1.4;text-overflow:ellipsis;white-space:nowrap}.acheng-vt-row-title small{overflow:hidden;color:#8b8b8e;font-size:11px;text-overflow:ellipsis;white-space:nowrap}.acheng-vt-kind{display:inline-flex;padding:5px 7px;border-radius:6px;background:rgba(243,119,0,.09);color:#c55a00;font-size:10px;font-style:normal;font-weight:800;white-space:nowrap}.acheng-vt-ratio{color:#494a4e;font-size:12px;font-weight:750}.acheng-vt-row .acheng-vt-category{display:grid;gap:3px;margin:0;color:#3d3e42;font-size:11px;font-weight:700}.acheng-vt-row .acheng-vt-category small{color:#929397;font-size:10px;font-weight:500}.acheng-vt-date{color:#77787b;font-size:11px}.acheng-vt-score{display:inline-flex;align-items:baseline;gap:4px;color:#d46000;white-space:nowrap}.acheng-vt-score b{font-size:18px;letter-spacing:-.05em}.acheng-vt-score small{color:#929397;font-size:9px}.acheng-vt-row-status{color:#818286;font-size:11px;font-weight:700}.acheng-vt-row-status.is-done{color:#267657}.acheng-vt-open{color:#717276;font-size:11px;font-weight:700;white-space:nowrap}.acheng-vt-open i{color:#df6700;font-size:15px;font-style:normal}.acheng-vtd-score{display:grid;justify-items:end;gap:0;padding:9px 0 0}.acheng-vtd-score b{font-size:36px;line-height:.9}.acheng-vtd-score small{font-size:10px}.acheng-vtd-stats{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border-top:1px solid rgba(29,29,31,.11);border-left:1px solid rgba(29,29,31,.11)}.acheng-vtd-stats div{display:grid;gap:7px;padding:16px 14px;border-right:1px solid rgba(29,29,31,.11);border-bottom:1px solid rgba(29,29,31,.11)}.acheng-vtd-stats span{color:#8a8b8e;font-size:10px}.acheng-vtd-stats b{color:#303136;font-size:14px;line-height:1.45}.acheng-vtd-analysis{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:1px solid rgba(29,29,31,.11);border-left:1px solid rgba(29,29,31,.11)}.acheng-vtd-analysis>div{padding:16px 18px;border-right:1px solid rgba(29,29,31,.11);border-bottom:1px solid rgba(29,29,31,.11)}.acheng-vtd-analysis b{color:#37383c;font-size:12px}.acheng-vtd-analysis p{margin:8px 0 0;color:#6c6d71;font-size:12px;line-height:1.7}.acheng-vtd-rewrites{display:grid;gap:0;margin:14px 0 0;padding:0;list-style:none;border-top:1px solid rgba(29,29,31,.11)}.acheng-vtd-rewrites li{display:grid;grid-template-columns:68px minmax(0,1fr);gap:15px;align-items:center;padding:13px 0;border-bottom:1px solid rgba(29,29,31,.11)}.acheng-vtd-rewrites span{color:#dc6700;font-size:11px;font-weight:800}.acheng-vtd-rewrites p{margin:0;color:#34353a;font-size:14px;font-weight:700;line-height:1.55}
@media (max-width:1120px){.acheng-vt-table{overflow-x:auto}.acheng-vt-table-head,.acheng-vt-row{min-width:1040px}.acheng-vtd-stats{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (max-width:820px){.acheng-vt-page{max-width:none}.acheng-vt-table{margin-inline:-2px;border-radius:14px}.acheng-vt-table-head,.acheng-vt-row{min-width:930px}.acheng-vtd-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.acheng-vtd-analysis{grid-template-columns:1fr}.acheng-vtd-score{justify-items:start;margin-top:14px}.acheng-vtd-score b{font-size:30px}}
@media (max-width:500px){.acheng-vt-table-head,.acheng-vt-row{min-width:860px}.acheng-vtd-stats{grid-template-columns:1fr}.acheng-vtd-rewrites li{grid-template-columns:44px minmax(0,1fr);gap:10px}.acheng-vtd-rewrites p{font-size:13px}}

/* Short-video topic cards: reuse the approved material study — layered edge, inner light and a quiet physical depth. */
.acheng-vt-card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:22px 18px;align-items:start}
.acheng-vt-card{position:relative;isolation:isolate;display:flex;min-width:0;aspect-ratio:3/4;min-height:0;flex-direction:column;overflow:hidden;padding:16px;border:1px solid rgba(155,149,140,.44);border-radius:14px;background:rgba(251,251,249,.94);box-shadow:inset 0 1px 0 rgba(255,255,255,.88),inset 0 -1px 0 rgba(75,70,63,.05),0 9px 18px rgba(43,41,37,.055),0 2px 4px rgba(43,41,37,.035);color:#262524;text-decoration:none;will-change:transform,opacity}
.acheng-vt-card:before{position:absolute;inset:1px;z-index:-1;border:1px solid rgba(255,255,255,.56);border-radius:12px;box-shadow:inset 0 1px 0 rgba(255,255,255,.58),inset 0 -8px 16px rgba(86,78,68,.025);content:"";pointer-events:none}.acheng-vt-card>*{position:relative;z-index:1}.acheng-vt-card:focus-visible{outline:2px solid #d96500;outline-offset:4px}
.acheng-vt-card-top{display:flex;min-height:21px;align-items:center;justify-content:space-between;gap:8px}.acheng-vt-source{overflow:hidden;color:#8d8983;font-size:9px;text-overflow:ellipsis;white-space:nowrap}.acheng-vt-card .acheng-vt-kind{display:inline-flex;flex:0 0 auto;align-items:center;min-height:21px;padding:3px 7px;border:1px solid rgba(104,97,88,.07);border-radius:99px;background:#f4e5e1;color:#925348;box-shadow:inset 0 1px rgba(255,255,255,.46);font-size:9px;font-style:normal;font-weight:700;white-space:nowrap}
.acheng-vt-card h2{display:-webkit-box;min-height:50px;overflow:hidden;margin:10px 0 0;color:#262524;font-size:clamp(18px,1.55vw,21px);font-weight:700;line-height:1.36;letter-spacing:-.04em;-webkit-box-orient:vertical;-webkit-line-clamp:2}
.acheng-vt-card-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;margin-top:11px}.acheng-vt-card-metrics>div{display:grid;min-width:0;min-height:58px;align-content:start;padding:7px;border:1px solid rgba(110,104,96,.15);border-radius:6px;background:rgba(255,255,255,.22);box-shadow:inset 0 1px rgba(255,255,255,.5),0 1px 1px rgba(69,64,58,.025)}.acheng-vt-card-metrics span{color:#88837c;font-size:8px;line-height:1.25}.acheng-vt-card-metrics b{overflow:hidden;margin-top:8px;color:#373431;font-size:16px;font-weight:700;letter-spacing:-.04em;line-height:1.1;text-overflow:ellipsis;white-space:nowrap}
.acheng-vt-card-ai{display:grid;grid-template-columns:3px minmax(0,1fr);gap:8px;min-height:58px;margin-top:11px}.acheng-vt-card-ai>i{display:block;border-radius:99px;background:#d96500;box-shadow:0 1px 2px rgba(104,55,21,.18)}.acheng-vt-card-ai b{display:block;margin-bottom:4px;color:#8f5b29;font-size:9px;font-weight:700}.acheng-vt-card-ai p{display:-webkit-box;overflow:hidden;margin:0;color:#5f5a53;font-size:10px;line-height:1.5;-webkit-box-orient:vertical;-webkit-line-clamp:3}
.acheng-vt-card-engagement{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:4px;margin-top:9px}.acheng-vt-card-engagement div{min-width:0;padding:5px 2px;border:1px solid rgba(110,104,96,.14);border-radius:5px;background:rgba(255,255,255,.16);box-shadow:inset 0 1px rgba(255,255,255,.38);text-align:center}.acheng-vt-card-engagement span{display:block;overflow:hidden;color:#928d85;font-size:8px;text-overflow:ellipsis;white-space:nowrap}.acheng-vt-card-engagement b{display:block;overflow:hidden;margin-top:3px;color:#56514b;font-size:9px;font-weight:500;text-overflow:ellipsis;white-space:nowrap}
.acheng-vt-card-quick{display:grid;grid-template-columns:1fr 1fr;gap:5px;margin-top:9px}.acheng-vt-card-quick>span{min-width:0;padding-left:6px;border-left:1px solid rgba(110,104,96,.24)}.acheng-vt-card-quick small{display:block;color:#928d85;font-size:8px}.acheng-vt-card-quick b{display:block;overflow:hidden;margin-top:2px;color:#514c45;font-size:10px;font-weight:600;text-overflow:ellipsis;white-space:nowrap}
.acheng-vt-card-foot{display:flex;align-items:end;justify-content:space-between;gap:8px;margin-top:auto;padding-top:10px;border-top:1px solid rgba(110,104,96,.16)}.acheng-vt-card-foot>div{display:flex;max-width:72%;flex-wrap:wrap;gap:4px}.acheng-vt-card-foot small{align-self:center;color:#98938c;font-size:8px}.acheng-vt-card-foot span{display:inline-flex;align-items:center;min-height:18px;padding:2px 5px;border:1px solid rgba(104,97,88,.07);border-radius:99px;background:#f2eee8;color:#766d61;box-shadow:inset 0 1px rgba(255,255,255,.46);font-size:8px;line-height:1.1;white-space:nowrap}.acheng-vt-card-foot span:last-child{background:#f8ede3;color:#9a5d2c}.acheng-vt-card-foot strong{display:inline-flex;flex:0 0 auto;align-items:center;min-height:29px;padding:5px 7px;border:1px solid rgba(87,81,73,.19);border-radius:8px;background:rgba(255,255,255,.22);box-shadow:inset 0 1px rgba(255,255,255,.55),0 2px 4px rgba(61,56,50,.035);color:#5d5750;font-size:9px;font-weight:700;white-space:nowrap}.acheng-vt-card-foot i{margin-left:3px;color:#d96500;font-size:11px;font-style:normal}
@media (max-width:820px){.acheng-vt-card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:17px}.acheng-vt-card{padding:15px}.acheng-vt-card h2{font-size:18px}.acheng-vt-card-metrics b{font-size:15px}}
@media (max-width:620px){.acheng-vt-card-grid{grid-template-columns:1fr;max-width:390px;margin-inline:auto}.acheng-vt-card{padding:16px}.acheng-vt-card h2{font-size:20px}.acheng-vt-card-metrics>div{min-height:64px}.acheng-vt-card-metrics b{font-size:18px}.acheng-vt-card-ai{min-height:64px}.acheng-vt-card-ai p{-webkit-line-clamp:4;font-size:10.5px}.acheng-vt-card-engagement b{font-size:10px}}

/* Keep the research-page masthead readable on a narrow workbench canvas. */
@media (max-width:820px){
  .acheng-vt-head{grid-template-columns:1fr;gap:16px}
  .acheng-vt-overview{display:flex;align-items:baseline;gap:9px;padding:12px 0 0;border-top:1px solid rgba(29,29,31,.11);border-left:0}
}

/* Daily topic cards: homepage-entry material, simplified for rapid editorial decisions. */
.acheng-vt-card-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.acheng-vt-card{height:318px;min-height:318px;aspect-ratio:auto;padding:22px!important;border-color:rgba(255,255,255,.86)!important;border-radius:18px!important;background:linear-gradient(145deg,rgba(255,255,255,.90),rgba(255,255,255,.62))!important;box-shadow:inset 0 1px 0 rgba(255,255,255,.96),inset 0 -1px 0 rgba(255,255,255,.30),0 18px 44px rgba(35,36,39,.11)!important;backdrop-filter:blur(18px) saturate(1.08)!important;-webkit-backdrop-filter:blur(18px) saturate(1.08)!important;transition:none!important}
.acheng-vt-card:before{inset:0!important;border-color:rgba(255,255,255,.30)!important;border-radius:18px!important;background:radial-gradient(circle at 12% 0%,rgba(255,255,255,.46),transparent 34%),linear-gradient(180deg,rgba(255,255,255,.14),transparent 48%)!important;box-shadow:none!important}
.acheng-vt-card:hover{border-color:rgba(255,255,255,.92)!important;box-shadow:inset 0 1px 0 rgba(255,255,255,.98),inset 0 -1px 0 rgba(255,255,255,.38),0 20px 38px rgba(36,39,30,.10)!important}
.acheng-vt-card[data-view="大爆款"]{--topic-accent:#d96500;--topic-soft:rgba(217,101,0,.12)}
.acheng-vt-card[data-view="小爆款"]{--topic-accent:#546f88;--topic-soft:rgba(84,111,136,.12)}
.acheng-vt-card[data-view="潜力款"]{--topic-accent:#62745f;--topic-soft:rgba(98,116,95,.12)}
.acheng-vt-card-top{min-height:24px}.acheng-vt-source{color:#73767a!important;font-size:11px!important;font-variant-numeric:tabular-nums}.acheng-vt-card .acheng-vt-kind{min-height:24px!important;padding:4px 9px!important;border-color:transparent!important;background:var(--topic-soft)!important;color:var(--topic-accent)!important;box-shadow:none!important;font-size:10px!important}
.acheng-vt-card-main{margin-top:25px}.acheng-vt-card .acheng-vt-category{margin:0 0 9px!important;color:var(--topic-accent)!important;font-size:11px!important;font-weight:750!important;letter-spacing:.02em}.acheng-vt-card h2{display:-webkit-box!important;overflow:hidden;min-height:2.52em;margin:0!important;color:#202124!important;font-size:clamp(22px,1.42vw,27px)!important;font-weight:750!important;line-height:1.26!important;letter-spacing:-.055em!important;-webkit-box-orient:vertical;-webkit-line-clamp:2}
.acheng-vt-card-signal{display:grid;grid-template-columns:auto 1fr;align-items:baseline;column-gap:8px;margin-top:17px}.acheng-vt-card-signal span{grid-column:1/-1;color:#74767a;font-size:10px}.acheng-vt-card-signal b{color:var(--topic-accent);font-size:30px;line-height:1;font-weight:750;letter-spacing:-.07em}.acheng-vt-card-signal small{justify-self:end;color:#6e7074;font-size:10px;white-space:nowrap}
.acheng-vt-card-ai{min-height:0!important;margin-top:auto!important;padding:12px 0 0!important;border-top:1px solid rgba(29,29,31,.10)!important}.acheng-vt-card-ai>i{width:3px!important;min-height:34px!important;border-radius:2px!important;background:var(--topic-accent)!important}.acheng-vt-card-ai b{color:#5d6065!important;font-size:10px!important}.acheng-vt-card-ai p{display:-webkit-box!important;overflow:hidden;margin-top:4px!important;color:#5f6267!important;font-size:11px!important;line-height:1.55!important;-webkit-box-orient:vertical;-webkit-line-clamp:1}
.acheng-vt-card-foot{margin-top:13px!important;padding-top:0!important;border-top:0!important}.acheng-vt-card-foot>span{color:#777a7e;font-size:10px;font-weight:650}.acheng-vt-card-foot strong{min-height:auto!important;padding:0!important;border:0!important;border-radius:0!important;background:transparent!important;box-shadow:none!important;color:#34363a!important;font-size:11px!important}.acheng-vt-card-foot i{color:var(--topic-accent)!important}
.acheng-vt-overview strong{font-size:23px!important;letter-spacing:-.035em!important}.acheng-vt-overview em{font-variant-numeric:tabular-nums}.acheng-vtd-video-link{display:inline-flex;align-items:center;gap:5px;margin-top:14px;padding:8px 11px;border:1px solid rgba(29,29,31,.14);border-radius:10px;background:rgba(255,255,255,.62);box-shadow:inset 0 1px rgba(255,255,255,.92);color:#3d3f43;font-size:12px;font-weight:700;text-decoration:none}.acheng-vtd-video-link i{color:#d96500;font-size:15px;font-style:normal}
@media (min-width:1720px){.acheng-wb-shell{max-width:1920px!important}.acheng-wb-main{padding:48px 64px 72px!important}.acheng-vt-page,.acheng-vtd-page{max-width:1640px!important}.acheng-vt-card-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}.acheng-vt-card{height:338px;min-height:338px!important}}
@media (max-width:820px){.acheng-vt-card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.acheng-vt-card{height:auto;min-height:292px;padding:18px!important}.acheng-vt-card-main{margin-top:19px}.acheng-vt-card h2{font-size:20px!important}.acheng-vt-card-signal b{font-size:26px}.acheng-vt-card-signal small{display:none}}
@media (max-width:620px){.acheng-vt-card-grid{grid-template-columns:1fr;max-width:none}.acheng-vt-card{height:auto;min-height:290px;padding:20px!important}.acheng-vt-card h2{font-size:23px!important}.acheng-vt-card-signal small{display:block}.acheng-vtd-video-link{margin-top:12px}}
@media (prefers-reduced-transparency:reduce){.acheng-vt-card{background:#fff!important;backdrop-filter:none!important;-webkit-backdrop-filter:none!important}}

/* Interaction data receives the same clear hierarchy as the homepage entry cards. */
.acheng-topic-icon{display:inline-grid;place-items:center;width:15px;height:15px;color:currentColor}.acheng-topic-icon svg{width:100%;height:100%;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.acheng-vt-card-key-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:17px}.acheng-vt-card-ratio,.acheng-vt-card .acheng-topic-metric{display:grid;min-width:0;align-content:start;gap:3px;padding-right:6px;border-right:1px solid rgba(29,29,31,.10)}.acheng-vt-card .acheng-topic-metric:last-child{padding-right:0;border-right:0}.acheng-vt-card-ratio span,.acheng-vt-card .acheng-topic-metric span{overflow:hidden;color:#74767a;font-size:10px;text-overflow:ellipsis;white-space:nowrap}.acheng-vt-card .acheng-topic-metric{grid-template-columns:15px minmax(0,1fr);column-gap:4px}.acheng-vt-card .acheng-topic-metric .acheng-topic-icon{grid-column:1;grid-row:1;color:var(--topic-accent)}.acheng-vt-card .acheng-topic-metric span{grid-column:2;grid-row:1}.acheng-vt-card-ratio b,.acheng-vt-card .acheng-topic-metric b{grid-column:1/-1;overflow:hidden;color:var(--topic-accent);font-size:clamp(22px,1.45vw,29px);font-weight:750;letter-spacing:-.075em;line-height:1.05;text-overflow:ellipsis;white-space:nowrap}.acheng-vt-card-foot strong{min-height:32px!important;padding:0 10px!important;border:1px solid var(--topic-accent)!important;border-radius:10px!important;background:var(--topic-accent)!important;box-shadow:inset 0 1px rgba(255,255,255,.24),0 5px 12px color-mix(in srgb,var(--topic-accent) 22%,transparent)!important;color:#fff!important;line-height:30px}.acheng-vt-card-foot i{color:#fff!important}.acheng-vt-card-foot>span{font-size:11px!important}.acheng-vt-empty{margin:30px 0 0;padding:26px 24px;border:1px dashed rgba(29,29,31,.18);border-radius:16px;background:rgba(255,255,255,.5);color:#6e7074;font-size:13px;line-height:1.7;text-align:center}
.acheng-vtd-stats .acheng-topic-metric{grid-template-columns:16px minmax(0,1fr);column-gap:7px;align-content:start}.acheng-vtd-stats .acheng-topic-metric .acheng-topic-icon{grid-column:1;grid-row:1;color:#d96500}.acheng-vtd-stats .acheng-topic-metric span{grid-column:2;grid-row:1}.acheng-vtd-stats .acheng-topic-metric b{grid-column:1/-1;margin-top:1px}
@media (max-width:820px){.acheng-vt-card-key-metrics{gap:6px;margin-top:15px}.acheng-vt-card-ratio,.acheng-vt-card .acheng-topic-metric{padding-right:5px}.acheng-vt-card-ratio b,.acheng-vt-card .acheng-topic-metric b{font-size:22px}.acheng-vt-card-foot strong{padding:0 8px!important;font-size:10px!important}}
@media (max-width:430px){.acheng-vt-card-ratio b,.acheng-vt-card .acheng-topic-metric b{font-size:21px}.acheng-vt-card-foot strong{min-height:30px!important;line-height:28px}}
@media (max-width:500px){.acheng-vt-overview{flex-wrap:nowrap!important;gap:7px!important}.acheng-vt-overview span,.acheng-vt-overview strong{white-space:nowrap}.acheng-vt-overview strong{font-size:21px!important}.acheng-vt-overview em{min-width:0;font-size:10px!important;line-height:1.35!important}}

/* Portrait cards restore a deliberate reading rhythm: topic first, interaction data second. */
.acheng-vt-card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.acheng-vt-card{height:auto!important;min-height:0!important;aspect-ratio:3/4!important;padding:22px!important;transform-origin:center bottom}.acheng-vt-card-top{align-items:flex-start!important}.acheng-vt-source{font-size:11px!important;line-height:1.7}.acheng-vt-card-status{display:flex;align-items:center;justify-content:flex-end;gap:7px}.acheng-vt-card-status time{color:#56595e;font-size:13px;font-weight:750;line-height:24px;font-variant-numeric:tabular-nums;white-space:nowrap}.acheng-vt-card-main{margin-top:27px!important}.acheng-vt-card .acheng-vt-category{margin-bottom:11px!important;font-size:11px!important}.acheng-vt-card h2{min-height:0!important;font-size:clamp(22px,1.52vw,29px)!important;line-height:1.22!important;-webkit-line-clamp:3}.acheng-vt-card-key-metrics{margin-top:21px!important}.acheng-vt-card-ratio b{font-size:clamp(26px,1.7vw,33px)!important}.acheng-vt-card .acheng-topic-metric b{font-size:clamp(20px,1.28vw,25px)!important;letter-spacing:-.06em!important}.acheng-vt-card .acheng-topic-metric span,.acheng-vt-card-ratio span{font-size:9px!important}.acheng-vt-card-ai{margin-top:auto!important;padding-top:15px!important}.acheng-vt-card-ai p{-webkit-line-clamp:2!important;font-size:11px!important}.acheng-vt-card-foot{margin-top:16px!important}.acheng-vt-card-foot strong{min-height:36px!important;padding:0 12px!important;border-radius:11px!important;line-height:34px!important;font-size:11px!important}.acheng-vtd-video-link{margin-top:20px!important;padding:13px 17px!important;border-color:#d96500!important;border-radius:13px!important;background:#d96500!important;box-shadow:inset 0 1px rgba(255,255,255,.25),0 12px 24px rgba(217,101,0,.22)!important;color:#fff!important;font-size:14px!important;font-weight:750!important}.acheng-vtd-video-link i{color:#fff!important;font-size:17px!important}
.acheng-vt-overview{grid-template-columns:auto minmax(0,1fr)!important;gap:2px 10px!important}.acheng-vt-overview span{grid-column:1/-1}.acheng-vt-overview strong{align-self:center;white-space:nowrap}.acheng-vt-live-time{align-self:center;color:#d96500;font-size:30px;line-height:1;font-weight:750;letter-spacing:-.065em;font-variant-numeric:tabular-nums;white-space:nowrap}.acheng-vt-overview em{grid-column:1/-1}
@media (min-width:1720px){.acheng-vt-card-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.acheng-vt-card{height:auto!important;min-height:0!important}}
@media (max-width:820px){.acheng-vt-card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.acheng-vt-card{height:auto!important;min-height:0!important;aspect-ratio:3/4!important;padding:18px!important}.acheng-vt-card-main{margin-top:20px!important}.acheng-vt-card h2{font-size:21px!important}.acheng-vt-card-key-metrics{margin-top:16px!important}.acheng-vt-card-ratio b{font-size:25px!important}.acheng-vt-card .acheng-topic-metric b{font-size:19px!important}.acheng-vt-card-ai p{-webkit-line-clamp:1!important}.acheng-vt-live-time{font-size:25px}}
@media (max-width:620px){.acheng-vt-card-grid{grid-template-columns:1fr;max-width:390px;margin-inline:auto}.acheng-vt-card{aspect-ratio:3/4!important;padding:21px!important}.acheng-vt-card h2{font-size:26px!important}.acheng-vt-card-ratio b{font-size:31px!important}.acheng-vt-card .acheng-topic-metric b{font-size:23px!important}.acheng-vt-card-ai p{-webkit-line-clamp:2!important}.acheng-vt-live-time{font-size:24px}}
@media (max-width:500px){.acheng-vt-overview{display:grid!important;grid-template-columns:auto minmax(0,1fr)!important;gap:2px 7px!important}.acheng-vt-overview span{grid-column:1/-1}.acheng-vt-overview strong{font-size:19px!important}.acheng-vt-live-time{font-size:23px!important}.acheng-vt-overview em{grid-column:1/-1;white-space:nowrap}.acheng-vt-card-status{gap:5px}.acheng-vt-card-status time{font-size:12px}.acheng-vt-card .acheng-vt-kind{padding:3px 7px!important}}

/* A topic card is a reading surface: the editorial thesis leads, data supports it. */
.acheng-vt-card{padding:24px!important}
.acheng-vt-card-main{margin-top:19px!important}
.acheng-vt-card .acheng-vt-category{margin-bottom:9px!important}
.acheng-vt-card h2{font-size:clamp(24px,1.6vw,30px)!important;line-height:1.17!important;letter-spacing:-.065em!important}
.acheng-vt-card-key-metrics{grid-template-columns:repeat(2,minmax(0,1fr))!important;gap:0 16px!important;margin-top:23px!important}
.acheng-vt-card-ratio{display:flex!important;grid-column:1/-1!important;align-items:baseline!important;justify-content:space-between!important;gap:12px!important;margin-bottom:15px!important;padding:13px 0 14px!important;border-block:1px solid rgba(29,29,31,.11)!important}
.acheng-vt-card-ratio span{font-size:10px!important;font-weight:700!important;letter-spacing:.04em!important}
.acheng-vt-card-ratio b{font-size:clamp(34px,2.05vw,42px)!important;line-height:.9!important}
.acheng-vt-card .acheng-topic-metric{grid-template-columns:15px minmax(0,1fr)!important;gap:0 5px!important;padding:0!important;border-right:0!important}
.acheng-vt-card .acheng-topic-metric .acheng-topic-icon{align-self:center}
.acheng-vt-card .acheng-topic-metric span{align-self:center;font-size:10px!important}
.acheng-vt-card .acheng-topic-metric b{margin-top:5px!important;font-size:clamp(21px,1.35vw,26px)!important;line-height:1!important}
.acheng-vt-card-ai{margin-top:22px!important;padding:13px 13px 12px!important;border-top:0!important;border-radius:11px!important;background:rgba(29,29,31,.035)!important}
.acheng-vt-card-ai>i{min-height:34px!important}
.acheng-vt-card-ai b{margin-bottom:3px!important}
.acheng-vt-card-ai p{-webkit-line-clamp:2!important}
.acheng-vt-card-foot{margin-top:auto!important;padding-top:17px!important;border-top:1px solid rgba(29,29,31,.10)!important}
.acheng-vt-card-foot strong{min-height:38px!important;padding:0 13px!important;line-height:36px!important}
@media (max-width:820px){.acheng-vt-card{padding:20px!important}.acheng-vt-card h2{font-size:22px!important}.acheng-vt-card-key-metrics{margin-top:18px!important}.acheng-vt-card-ratio{margin-bottom:12px!important;padding:11px 0 12px!important}.acheng-vt-card-ratio b{font-size:31px!important}.acheng-vt-card .acheng-topic-metric b{font-size:20px!important}.acheng-vt-card-ai{margin-top:16px!important;padding:11px!important}}
@media (max-width:620px){.acheng-vt-card{padding:23px!important}.acheng-vt-card h2{font-size:27px!important}.acheng-vt-card-key-metrics{margin-top:22px!important}.acheng-vt-card-ratio b{font-size:39px!important}.acheng-vt-card .acheng-topic-metric b{font-size:24px!important}.acheng-vt-card-ai{margin-top:20px!important;padding:13px!important}}

/* MiSans numerals and Chinese glyphs need a little optical breathing room. */
.acheng-vt-card h2{line-height:1.27!important;padding-block:2px!important}
.acheng-vt-card-ratio b{line-height:1.2!important;padding-bottom:2px!important}
.acheng-vt-card .acheng-topic-metric b{line-height:1.18!important;padding-bottom:1px!important}

/* Keep the final action strip optically grounded on narrow cards. */
.acheng-vt-card-ai{grid-template-columns:2px minmax(0,1fr)!important;align-items:stretch!important}
.acheng-vt-card-ai>i{width:2px!important;min-height:0!important;height:auto!important;align-self:stretch!important}
.acheng-vt-card-ai p{line-height:1.58!important}
.acheng-vt-card-foot{align-items:center!important;gap:10px!important}
.acheng-vt-card-foot>span{max-width:calc(100% - 142px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.acheng-vt-card-ai,.acheng-vt-card-foot{flex-shrink:0!important}
.acheng-vt-card-ai{min-height:74px!important;box-sizing:border-box!important}
.acheng-vt-card-ai{margin-top:18px!important}
.acheng-vt-card-foot{padding-top:12px!important}
.acheng-vt-card-ratio{padding-right:6px!important;overflow:visible!important}
.acheng-vt-card-ratio b{flex:0 0 auto!important;overflow:visible!important;text-overflow:clip!important}
.acheng-vt-card-foot>span{max-width:none!important;overflow:visible!important;padding:3px 7px!important;text-overflow:clip!important;line-height:1.3!important}
@media (max-width:620px){
  .acheng-vt-card{padding:19px!important}
  .acheng-vt-card h2{font-size:25px!important;line-height:1.24!important}
  .acheng-vt-card-key-metrics{margin-top:15px!important}
  .acheng-vt-card-ratio{margin-bottom:10px!important;padding:9px 6px 10px 0!important}
  .acheng-vt-card-ai{min-height:70px!important;margin-top:12px!important;padding:11px!important}
  .acheng-vt-card-foot{margin-top:10px!important;padding-top:10px!important}
}

/* Fixed portrait cards reserve their last row before optional copy can grow. */
.acheng-vt-card h2{min-height:0!important;max-height:2.54em!important;-webkit-line-clamp:2!important}
.acheng-vt-card-ai p{display:-webkit-box!important;max-height:3.16em!important;overflow:hidden!important;-webkit-box-orient:vertical!important;-webkit-line-clamp:2!important}
.acheng-vt-card-foot{min-height:50px!important;box-sizing:border-box!important}
@media (max-width:620px){.acheng-vt-card-foot{min-height:48px!important}}

/* Structural slots keep the CTA inside a fixed 3:4 card at every content length. */
.acheng-vt-card{display:grid!important;grid-template-rows:24px minmax(0,1fr) 74px 50px!important;box-sizing:border-box!important}
.acheng-vt-card-main{min-height:0!important}
.acheng-vt-card-ai{align-self:stretch!important;min-height:0!important;margin-top:0!important}
.acheng-vt-card-foot{align-self:stretch!important;min-height:0!important;margin-top:0!important}
@media (max-width:620px){
  .acheng-vt-card{grid-template-rows:24px minmax(0,1fr) 70px 48px!important}
  .acheng-vt-card-main{margin-top:14px!important}
}
@media (max-width:380px){
  .acheng-vt-card{padding:16px!important;grid-template-rows:22px minmax(0,1fr) 64px 44px!important}
  .acheng-vt-card-main{margin-top:10px!important}
  .acheng-vt-card h2{font-size:22px!important;line-height:1.25!important}
  .acheng-vt-card-key-metrics{margin-top:12px!important}
  .acheng-vt-card-ratio{margin-bottom:8px!important;padding:7px 6px 8px 0!important}
  .acheng-vt-card-ratio b{font-size:35px!important}
  .acheng-vt-card .acheng-topic-metric b{font-size:22px!important}
  .acheng-vt-card-ai{min-height:64px!important;padding:8px!important}
  .acheng-vt-card-foot{min-height:44px!important;padding-top:6px!important}
}
/* Four-column desktop cards become narrower before the page reaches ultrawide width. */
@media (min-width:621px) and (max-width:1960px){
  .acheng-vt-card{padding:20px!important;grid-template-rows:24px minmax(0,1fr) 68px 46px!important}
  .acheng-vt-card-main{margin-top:14px!important}
  .acheng-vt-card h2{font-size:25px!important;line-height:1.23!important}
  .acheng-vt-card-key-metrics{margin-top:15px!important}
  .acheng-vt-card-ratio{margin-bottom:10px!important;padding:9px 6px 10px 0!important}
  .acheng-vt-card-ratio b{font-size:34px!important}
  .acheng-vt-card .acheng-topic-metric b{font-size:22px!important}
  .acheng-vt-card-ai{min-height:68px!important;padding:9px!important}
  .acheng-vt-card-foot{min-height:46px!important;padding-top:8px!important}
}
.acheng-workbench-active .acheng-wb-main{overflow-x:clip!important}

/* Reserve a real desktop column for the live clock: the date and seconds must never be compressed. */
@media (min-width:821px){
  .acheng-vt-head{grid-template-columns:minmax(0,1fr) 286px!important;gap:28px!important}
  .acheng-vt-overview{min-width:286px;grid-template-columns:max-content max-content!important;column-gap:10px!important}
  .acheng-vt-overview strong,.acheng-vt-live-time{min-width:max-content;white-space:nowrap}
}

/* Detail score: a clear decision signal, sized as the secondary page hero. */
.acheng-vtd-score{min-width:176px;padding-top:3px!important}
.acheng-vtd-score b{font-size:clamp(96px,8vw,136px)!important;line-height:.72!important;font-weight:800!important;letter-spacing:-.105em!important;font-variant-numeric:tabular-nums}
.acheng-vtd-score small{margin-top:9px;color:#77797d;font-size:11px!important;font-weight:750;letter-spacing:.05em}
@media (max-width:820px){.acheng-vtd-score{min-width:0;padding-top:0!important}.acheng-vtd-score b{font-size:92px!important;line-height:.74!important}.acheng-vtd-score small{margin-top:8px}}
@media (max-width:500px){.acheng-vtd-score b{font-size:76px!important}.acheng-vtd-score small{font-size:10px!important}}

/* One navigation geometry at every route. Mobile keeps the brand and the
   four primary destinations in two deliberate rows instead of letting each
   page derive a different header height from its underlying legacy layout. */
@media (max-width:760px){
  .acheng-site-header,
  .acheng-site-header>div,
  .acheng-wb-header,
  .acheng-wb-header-inner{
    height:100px!important;
    min-height:100px!important;
    box-sizing:border-box!important;
  }
  .acheng-site-header>div,
  .acheng-wb-header-inner{
    display:flex!important;
    flex-wrap:wrap!important;
    align-content:center!important;
    align-items:center!important;
    gap:4px!important;
    padding:7px 12px!important;
  }
  .acheng-site-header .logo-link,
  .acheng-wb-brand{
    flex:0 0 100%!important;
    width:100%!important;
    min-width:0!important;
    height:36px!important;
    margin:0!important;
  }
  .acheng-wb-brand{gap:9px!important}
  .acheng-wb-brand>span:last-child{display:block!important}
  .acheng-wb-brand b{font-size:15px!important}
  .acheng-wb-brand small{display:none!important}
  .acheng-site-header .acheng-nav-pill,
  .acheng-wb-global-nav{
    order:2!important;
    display:flex!important;
    flex:0 0 100%!important;
    width:100%!important;
    max-width:none!important;
    min-height:36px!important;
    margin:0!important;
    padding:2px!important;
  }
  .acheng-site-header .acheng-nav-link,
  .acheng-wb-global-link{
    flex:1 1 0!important;
    justify-content:center!important;
    min-width:0!important;
    min-height:32px!important;
    padding-inline:4px!important;
    font-size:11px!important;
    white-space:nowrap!important;
  }
  .acheng-wb-member{display:none!important}
  .acheng-wb-shell{padding-top:100px!important}
  .acheng-wb-sidebar{top:100px!important}
  body.acheng-route-home .acheng-platform-main,
  body.acheng-route-module:not(.acheng-route-home) .acheng-module-main,
  .acheng-site-header+main{padding-top:100px!important}
}

@media (min-width:761px){
  .acheng-site-header,.acheng-site-header>div{height:72px!important;min-height:72px!important;box-sizing:border-box!important}
}
/* Final desktop layout lock. This file loads after workbench.css, so it keeps wide displays flush with the viewport. */
@media (min-width:821px){
  .acheng-wb-header{position:fixed!important;inset:0 0 auto!important;height:72px!important;z-index:1000!important}
  .acheng-wb-shell{width:100%!important;max-width:none!important;margin:0!important;grid-template-columns:248px minmax(0,1fr)!important;padding-top:72px!important}
  .acheng-wb-sidebar{position:sticky!important;top:72px!important;z-index:90!important;height:calc(100dvh - 72px)!important;box-sizing:border-box!important;overflow-y:auto!important;overscroll-behavior:contain}
  .acheng-wb-main{min-height:calc(100dvh - 72px)!important;padding:clamp(34px,3vw,52px) clamp(32px,4vw,76px) 72px!important}
  .acheng-vt-page,.acheng-vtd-page{max-width:1680px!important;margin:0!important}
  .acheng-members-page{max-width:1440px!important;margin:0!important}
}