/* LF EduTech · subpages (LV1–LV3, legal). Loaded after site.css */
.sub{--c:var(--gold)}
.sub[data-lv="1"]{--c:var(--lv1)}
.sub[data-lv="2"]{--c:var(--lv2)}
.sub[data-lv="3"]{--c:var(--lv3)}
.nav-links a.on{color:#fff;background:rgba(255,255,255,.06)}
.nav-links a.on i{color:var(--c)}

/* hero */
.sub-hero{position:relative;min-height:100svh;display:flex;align-items:center;padding:130px 0 90px}
.sub-hero .wrap{position:relative}
.sub-hero-copy{max-width:min(640px,54vw)}
.back{display:flex;width:max-content;align-items:center;gap:10px;font:11px var(--mono);letter-spacing:.2em;text-transform:uppercase;color:var(--muted);margin-bottom:38px;transition:color .3s,gap .3s}
.back:hover{color:#fff;gap:14px}
.lvpill{display:inline-flex;align-items:center;gap:10px;font:11px var(--mono);letter-spacing:.2em;text-transform:uppercase;color:var(--c);padding:8px 14px;border:1px solid color-mix(in srgb,var(--c) 40%,transparent);border-radius:999px;background:rgba(5,7,13,.45);backdrop-filter:blur(10px)}
.lvpill .dot{background:var(--c);box-shadow:0 0 12px var(--c)}
.sub-title{font-family:var(--serif);font-weight:400;font-size:clamp(42px,5vw,78px);line-height:1.03;letter-spacing:-.02em;margin:26px 0 24px}
.sub-title .line{display:block;overflow:hidden;padding-bottom:.08em}
.sub-title .line>span{display:inline-block}
.sub-title em{font-style:italic;background:linear-gradient(100deg,var(--c),#fff 130%);-webkit-background-clip:text;background-clip:text;color:transparent}
html[data-lang="zh"] .sub-title{font-weight:500;letter-spacing:.02em}
html[data-lang="zh"] .sub-title em{font-style:normal}
.sub-hero .lead{max-width:560px}
.partner-badge{display:flex;align-items:center;gap:16px;margin:0 0 6px;padding:12px 16px 12px 12px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.03);width:max-content;max-width:100%}
.partner-badge img{flex:none;height:34px;width:auto;border-radius:6px}
.partner-badge span{font:10.5px var(--mono);letter-spacing:.14em;color:var(--muted);text-transform:uppercase}
.partner-badge b{display:block;font:500 14px var(--sans);letter-spacing:0;color:var(--ink);text-transform:none}
.hero-hud{position:absolute;right:var(--gutter);bottom:-30px;text-align:right}
.hero-hud em{font-style:normal;color:var(--c)}

/* sections */
.sec{position:relative;padding:clamp(90px,13vh,150px) 0}
.sec-tight{padding-top:clamp(40px,6vh,70px)}
.sec-head{max-width:860px;margin-bottom:clamp(40px,6vh,64px)}
.sec-head.center{text-align:center;margin-left:auto;margin-right:auto}
.h2{font-family:var(--serif);font-weight:400;font-size:clamp(32px,4.2vw,62px);line-height:1.08;letter-spacing:-.01em}
.h2 em{font-style:italic;background:linear-gradient(100deg,var(--c),#fff 130%);-webkit-background-clip:text;background-clip:text;color:transparent}
html[data-lang="zh"] .h2{letter-spacing:.02em}
html[data-lang="zh"] .h2 em{font-style:normal}
.sub-k{display:block;font:11px var(--mono);letter-spacing:.2em;text-transform:uppercase;color:var(--muted);margin-top:16px}
.sec .kicker{color:var(--c)}
.prose p{color:#b6bfd2;font-size:16.5px;margin-bottom:16px;max-width:680px}

/* split: copy + visual */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:clamp(36px,6vw,90px);align-items:center}
.split.rev>:first-child{order:2}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px}
.tags span{font-size:13.5px;padding:9px 14px;border-radius:999px;border:1px solid color-mix(in srgb,var(--c) 35%,transparent);background:color-mix(in srgb,var(--c) 7%,transparent)}
.frame{position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line);background:var(--bg2)}
.frame img{width:100%;height:100%;object-fit:cover}
.frame figcaption,.cap{position:absolute;left:14px;bottom:12px;font:10.5px var(--mono);letter-spacing:.16em;text-transform:uppercase;padding:6px 10px;border-radius:999px;background:rgba(5,7,13,.66);backdrop-filter:blur(8px)}
.frame.white{background:#fff}
.frame.white img{object-fit:contain;padding:18px}
.par{will-change:transform}

/* glass cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;perspective:1400px}
.cards.two{grid-template-columns:1fr 1fr}
.card{position:relative;padding:30px 28px 32px;border-radius:22px;border:1px solid var(--line);background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.01));transform-style:preserve-3d;overflow:hidden;transition:border-color .4s}
.card::before{content:"";position:absolute;inset:-1px;border-radius:inherit;padding:1px;background:linear-gradient(140deg,var(--c),transparent 40%,transparent 70%,color-mix(in srgb,var(--c) 50%,transparent));-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .5s;pointer-events:none}
.card:hover::before{opacity:1}
.card .no{font:12px var(--mono);color:var(--c);letter-spacing:.14em}
.card .ck{display:block;font:10.5px var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--muted);margin:14px 0 8px}
.card h3{font-family:var(--serif);font-weight:400;font-size:clamp(22px,1.9vw,27px);line-height:1.22;margin-bottom:12px}
.card p{color:#aab3c6;font-size:15px}
.card ul{list-style:none;margin-top:16px;display:grid;gap:8px}
.card li{position:relative;padding-left:18px;font-size:14.5px;color:#c6cddd}
.card li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:1px;background:var(--c)}
.card .goal{margin-top:20px;padding-top:16px;border-top:1px solid var(--line)}
.card .goal b{display:block;font:10.5px var(--mono);letter-spacing:.18em;color:var(--c);margin-bottom:6px;font-weight:400}
.card .sub-item{margin-top:22px;padding-top:20px;border-top:1px solid var(--line)}
.card .sub-item h4{font-weight:500;font-size:16px;margin-bottom:6px}

/* curriculum: three stages on a progress spine */
.stages{position:relative;display:grid;gap:18px}
.stage{display:grid;grid-template-columns:120px 1fr 1fr;gap:clamp(20px,3vw,48px);padding:34px 30px;border:1px solid var(--line);border-radius:22px;background:linear-gradient(120deg,rgba(255,255,255,.045),rgba(255,255,255,.008))}
.stage .big{font-family:var(--serif);font-size:clamp(56px,6vw,96px);line-height:.9;background:linear-gradient(180deg,var(--c),transparent 120%);-webkit-background-clip:text;background-clip:text;color:transparent}
.stage .ck{display:block;font:10.5px var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.stage h3{font-family:var(--serif);font-weight:400;font-size:clamp(22px,2vw,30px);line-height:1.2}
.stage ul{list-style:none;display:grid;gap:9px}
.stage li{position:relative;padding-left:18px;font-size:14.5px;color:#c6cddd}
.stage li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:1px;background:var(--c)}
.stage .goal{margin-top:18px;color:var(--muted);font-size:14.5px}
.stage .goal b{display:block;font:10.5px var(--mono);letter-spacing:.18em;color:var(--c);font-weight:400;margin-bottom:4px}

/* bento photo grids */
.bento{display:grid;grid-template-columns:repeat(12,1fr);grid-auto-rows:clamp(150px,15vw,230px);gap:16px}
.bento .frame{grid-column:span 4}
.bento .w6{grid-column:span 6}.bento .w8{grid-column:span 8}.bento .w12{grid-column:span 12}.bento .w3{grid-column:span 3}.bento .w5{grid-column:span 5}.bento .w7{grid-column:span 7}
.bento .h2r{grid-row:span 2}.bento .h3r{grid-row:span 3}
.bento .frame img{transition:transform 1.2s cubic-bezier(.2,.7,.2,1)}
.bento .frame:hover img{transform:scale(1.05)}
.bento .note{grid-column:span 4;display:flex;flex-direction:column;justify-content:flex-end;padding:24px;border-radius:20px;border:1px solid var(--line);background:linear-gradient(160deg,color-mix(in srgb,var(--c) 10%,transparent),transparent)}
.bento .note b{font-family:var(--serif);font-weight:400;font-size:24px;line-height:1.25}
.bento .note small{display:block;font:10.5px var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--c);margin-bottom:10px}
.bento .note p{color:var(--muted);font-size:14px;margin-top:10px}

/* deliverables + price */
.deliver{display:grid;grid-template-columns:1.2fr 1fr;gap:18px;align-items:stretch}
.price{position:relative;padding:36px 32px;border-radius:24px;overflow:hidden;border:1px solid color-mix(in srgb,var(--c) 40%,transparent);background:radial-gradient(120% 90% at 100% 0%,color-mix(in srgb,var(--c) 20%,transparent),transparent 60%),linear-gradient(160deg,#0f1424,#080b14)}
.price .ck{font:10.5px var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}
.price .amt{font-family:var(--serif);font-size:clamp(46px,5vw,72px);line-height:1;margin:16px 0 8px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;white-space:nowrap}
.price ul{list-style:none;margin:24px 0;display:grid;gap:10px}
.price li{display:flex;gap:12px;font-size:15px}
.price li::before{content:"✓";color:var(--c)}
.price .fine{font-size:13px;color:var(--muted)}

/* quote */
.quote{font-family:var(--serif);font-size:clamp(26px,3.4vw,50px);line-height:1.28;max-width:1050px;margin:0 auto;text-align:center}
.quote::before{content:"“";display:block;font-size:2.2em;line-height:.6;color:var(--c);margin-bottom:10px}

/* stat row */
.statrow{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);margin-top:56px;max-width:900px}
.statrow div{padding:26px 22px 4px 0}
.statrow div+div{padding-left:22px;border-left:1px solid var(--line)}
.statrow b{display:block;font-family:var(--serif);font-weight:400;font-size:clamp(44px,5vw,74px);line-height:1;color:var(--c)}
.statrow small{display:block;margin-top:12px;font:10.5px var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}

/* enterprise: live system */
.live{display:grid;grid-template-columns:1.35fr 1fr;gap:18px}
.live .frame{min-height:420px}
.live-badge{position:absolute;left:16px;top:14px;display:flex;gap:8px;align-items:center;font:10.5px var(--mono);letter-spacing:.16em;padding:7px 11px;border-radius:999px;background:rgba(5,7,13,.7);backdrop-filter:blur(8px);color:#5fd4a8}
.live-badge i{width:6px;height:6px;border-radius:50%;background:#5fd4a8;box-shadow:0 0 10px #5fd4a8;animation:pulse 1.6s infinite}
.models{padding:28px;border-radius:22px;border:1px solid var(--line);background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.01))}
.models h3{font-family:var(--serif);font-weight:400;font-size:26px;margin:10px 0 10px}
.models>p{color:var(--muted);font-size:14.5px;margin-bottom:20px}
.model{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-top:1px solid var(--line);font:13px var(--mono)}
.model i{font-style:normal;font-size:9.5px;letter-spacing:.14em;padding:4px 8px;border-radius:6px;background:rgba(226,184,107,.14);color:var(--lv2)}
.model i.ce{background:rgba(95,212,168,.12);color:var(--lv3)}
.model.typing span::after{content:"▍";color:var(--c);animation:pulse 1s infinite}
.models .more{margin-top:14px;font:10.5px var(--mono);letter-spacing:.1em;color:var(--muted)}

/* enterprise: cases */
.case-block{display:grid;grid-template-columns:1fr 1.15fr;gap:clamp(30px,5vw,70px);padding:clamp(30px,4vw,54px);border-radius:28px;border:1px solid var(--line);background:linear-gradient(140deg,rgba(255,255,255,.04),rgba(255,255,255,.005));margin-bottom:22px}
.case-block h3{font-family:var(--serif);font-weight:400;font-size:clamp(24px,2.4vw,36px);line-height:1.2;margin:12px 0 26px}
.case-block h4{font-weight:500;font-size:16px;margin-bottom:6px;color:#fff}
.case-block .item+.item{margin-top:22px;padding-top:22px;border-top:1px solid var(--line)}
.case-block .item p{color:#aab3c6;font-size:15px}
.shots{display:grid;gap:14px;align-content:start}
.shot{position:relative;border-radius:16px;overflow:hidden;border:1px solid var(--line);background:#fff}
.shot img{width:100%;aspect-ratio:16/8;object-fit:cover;object-position:top;transition:transform 1s cubic-bezier(.2,.7,.2,1)}
.shot:hover img{transform:scale(1.03)}
.shot figcaption{padding:12px 16px;background:#0b0f1b;border-top:1px solid var(--line)}
.shot figcaption small{display:block;font:9.5px var(--mono);letter-spacing:.18em;color:var(--c)}
.shot figcaption b{display:block;font-weight:500;font-size:14.5px;margin-top:3px}
.shot figcaption span{display:block;font-size:12.5px;color:var(--muted)}

/* media: horizontal film strip */
.strip{position:relative;overflow:hidden}
.strip-track{display:flex;gap:18px;width:max-content;padding:0 var(--gutter);will-change:transform}
.strip-track .frame{flex:none;width:clamp(260px,32vw,520px);aspect-ratio:16/10}
.strip-track .frame.tall{width:clamp(200px,22vw,360px);aspect-ratio:3/4}
.platforms{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.platforms span{font:12px var(--mono);padding:7px 12px;border-radius:8px;border:1px solid var(--line);color:#c6cddd}
.formula{font-family:var(--serif);font-size:clamp(22px,2.6vw,38px);text-align:center;margin:-20px auto 50px;color:#c6cddd}
.formula b{font-weight:400;color:var(--c)}

/* closing CTA (reuses .cta from site.css) */
.cta .btns{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}

/* legal */
.legal{max-width:780px;margin:0 auto;padding:150px var(--gutter) 110px}
.legal h1{font-family:var(--serif);font-weight:400;font-size:clamp(40px,5vw,68px);line-height:1.05;margin:20px 0 10px}
.legal .upd{font:11px var(--mono);letter-spacing:.16em;color:var(--muted);text-transform:uppercase}
.legal h2{font-family:var(--serif);font-weight:400;font-size:24px;margin:46px 0 14px;padding-top:26px;border-top:1px solid var(--line)}
.legal p,.legal li{color:#b6bfd2;font-size:16px}
.legal p+p{margin-top:10px}
.legal ul{margin:12px 0 0 0;list-style:none;display:grid;gap:8px}
.legal li{position:relative;padding-left:20px}
.legal li::before{content:"";position:absolute;left:0;top:.75em;width:8px;height:1px;background:var(--gold)}
.legal a{color:var(--gold);border-bottom:1px solid rgba(212,174,106,.4)}

/* responsive */
@media (max-width:1100px){
  .cards{grid-template-columns:1fr 1fr}
  .stage{grid-template-columns:90px 1fr}
  .stage>div:last-child{grid-column:2}
  .live{grid-template-columns:1fr}
}
@media (max-width:820px){
  .sub-hero{align-items:flex-end;padding:110px 0 70px;min-height:94svh}
  .sub-hero-copy{max-width:none}
  .hero-hud{display:none}
  .split,.deliver,.case-block,.cards,.cards.two{grid-template-columns:1fr}
  .split.rev>:first-child{order:0}
  .stage{grid-template-columns:1fr;padding:26px 22px;gap:14px}
  .stage>div:last-child{grid-column:auto}
  .stage .big{font-size:54px}
  .bento{grid-template-columns:repeat(2,1fr);grid-auto-rows:150px;gap:10px}
  .bento .frame,.bento .note,.bento .w3,.bento .w5,.bento .w6,.bento .w7,.bento .w8{grid-column:span 1}
  .bento .w12,.bento .wide-m{grid-column:span 2}
  .bento .h3r{grid-row:span 2}
  .bento .note{grid-column:span 2}
  .statrow b{font-size:40px}
  .statrow div{padding-right:10px}.statrow div+div{padding-left:12px}
  .live .frame{min-height:260px}
  .partner-badge{width:auto}
  .legal{padding-top:120px}
}
@media (prefers-reduced-motion:reduce){.live-badge i{animation:none}}