:root{--navy:#071b2b;--navy2:#0b2537;--gold:#b98535;--gold2:#d6aa63;--ink:#1d2730;--paper:#eadcc4;--paper2:#f6ecd8;--muted:#705f4a;--line:rgba(92,65,33,.28);--shadow:0 18px 42px rgba(48,31,12,.16);--r:6px}
*{box-sizing:border-box}body{margin:0;color:var(--ink);font-family:"Noto Serif SC","Songti SC","SimSun","Microsoft YaHei",serif;letter-spacing:0;background:var(--paper2)}a{text-decoration:none;color:inherit}img,video{max-width:100%;display:block}
.nav{position:sticky;top:0;z-index:20;min-height:82px;padding:0 clamp(18px,4vw,58px);display:flex;align-items:center;justify-content:space-between;background:linear-gradient(180deg,#061827,#0a2031);border-bottom:2px solid rgba(185,133,53,.65);box-shadow:0 8px 24px rgba(4,16,26,.28)}.brand{display:flex;align-items:center;gap:12px;color:var(--gold2)}.brand span{width:48px;height:48px;display:grid;place-items:center;border:2px solid var(--gold);border-radius:50%;font-weight:900;font-size:23px;box-shadow:inset 0 0 0 4px rgba(185,133,53,.13)}.brand b{display:block;font-size:22px;letter-spacing:.08em}.brand small{display:block;font-size:10px;text-transform:uppercase;color:#c69b5a;letter-spacing:.14em}.nav nav{display:flex;gap:22px;align-items:center}.nav nav a{color:#cfbd9e;font-size:16px;padding:28px 0 22px;border-bottom:3px solid transparent}.nav nav a:hover,.nav nav a.mark{color:var(--gold2);border-color:var(--gold)}.nav-btn{display:none;background:transparent;border:1px solid var(--gold);color:var(--gold2);width:42px;height:42px}.flashbox{position:fixed;top:92px;right:20px;z-index:30;display:grid;gap:10px}.flash{background:var(--paper2);border:1px solid var(--gold);box-shadow:var(--shadow);padding:12px 16px}
.hero{position:relative;min-height:430px;padding:70px clamp(18px,6vw,90px) 42px;display:grid;grid-template-columns:1fr 360px;gap:34px;align-items:center;overflow:hidden;background:#071b2b}.abyss{position:absolute;inset:0;z-index:0}.abyss:after{display:none}.abyss img,.abyss video{width:100%;height:100%;object-fit:cover}.hero-copy,.altar{position:relative;z-index:1}.hero-copy{position:relative;min-height:260px}.sigil{margin:0 0 10px;color:#7c5525;font-family:Georgia,serif;font-size:12px;text-transform:uppercase;letter-spacing:.22em;font-weight:700}.hero h1,.page h1,.detail h1{margin:0 0 18px;font-size:clamp(46px,6vw,82px);line-height:1.06;letter-spacing:.08em;color:var(--navy)}.hero h1 em{font-style:normal;color:#806026}.hero p,.page p,.detail p{color:#5f4c36;line-height:1.9;font-size:18px;max-width:760px}.actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px}.btn,button{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:9px 18px;border:1px solid #8c632e;border-radius:var(--r);background:#efe1c8;color:#4f3416;cursor:pointer;font-weight:700;box-shadow:inset 0 0 0 1px rgba(255,255,255,.28)}.btn.hot,button.hot,.hot{background:linear-gradient(180deg,#8b6128,#5c3b16);color:#fff5dd;border-color:#b98943}.altar{display:grid;grid-template-columns:1fr 1fr;gap:10px}.altar span{background:linear-gradient(180deg,var(--navy2),var(--navy));border:1px solid var(--gold);color:#d8c7a6;padding:16px;text-align:center;box-shadow:var(--shadow)}.altar b{display:block;color:var(--gold2);font-size:30px}
.block{position:relative;padding:58px clamp(18px,6vw,90px);background:var(--paper2);border-top:1px solid rgba(92,65,33,.15)}.head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:24px}.head.solo{display:block;text-align:left}.head h2,.manifest h2{margin:0;color:var(--navy);font-size:34px;letter-spacing:.12em}.head a{color:#71460f}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}
.course,.post,.line,.panel,.admin-card,.metric{background:rgba(255,248,231,.78);border:1px solid #b99868;border-radius:var(--r);box-shadow:var(--shadow);position:relative}.course:before,.panel:before,.post:before,.line:before{content:"";position:absolute;inset:5px;border:1px solid rgba(133,91,38,.22);pointer-events:none}.cover{aspect-ratio:16/9;background:#d7c3a4;position:relative;overflow:hidden}.cover img{width:100%;height:100%;object-fit:cover;filter:sepia(.55) saturate(.72) contrast(.9)}.cover i{position:absolute;left:0;bottom:0;background:#8a5b21;color:#fff0d2;font-style:normal;font-size:12px;padding:5px 9px}.course-in,.pad{padding:15px}.course small,.post small{color:#7d531e;font-weight:700}.course h3{font-size:19px;margin:8px 0;color:#2c261c;min-height:52px}.course p,.line span,.post p,.mini small{font-size:14px;color:var(--muted);line-height:1.75}.course-in div{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:13px}.course-in b{margin-left:auto;color:#8b5719;font-size:18px}.manifest{padding:38px clamp(18px,6vw,90px);background:#e6d2ae;border-top:1px solid #b99868;border-bottom:1px solid #b99868;text-align:center}.manifest p{max-width:880px;margin:14px auto;color:#5b4630;line-height:1.9}.manifest div{display:flex;justify-content:center;gap:42px;flex-wrap:wrap}.manifest span{color:#614111;font-weight:700}.split{display:grid;grid-template-columns:1fr 1fr;gap:28px}.split.wide{grid-template-columns:minmax(0,1.55fr) minmax(320px,.82fr)}.stack,.mini{display:grid;gap:12px}.line{display:grid;gap:5px;padding:16px}.page,.detail,.auth{position:relative;padding:62px clamp(18px,6vw,90px);background:linear-gradient(180deg,#efe0c5,#f7ecd8);border-bottom:1px solid #c1a06e}.search{display:grid;grid-template-columns:1fr 200px auto;gap:12px;margin-top:20px;max-width:900px}input,select,textarea{width:100%;padding:12px;border:1px solid #9b7a4a;background:#fff5df;color:#2b251b;border-radius:var(--r);font:inherit}option{background:#fff5df}.detail{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(320px,.8fr);gap:32px;align-items:center}.poster{background:#ead8b8;border:1px solid #b99868;box-shadow:var(--shadow)}.poster img{width:100%;aspect-ratio:16/9;object-fit:cover;filter:sepia(.45)}.poster div{padding:18px}.poster b{font-size:30px;color:#855017;display:block}.poster span{color:var(--muted)}.chapters details{background:#fff3da;border:1px solid #b99868;margin-bottom:10px}.chapters summary{padding:15px;cursor:pointer;font-weight:700;color:var(--navy)}.chapters a{display:flex;justify-content:space-between;border-top:1px solid rgba(185,153,104,.55);padding:12px 15px;color:#5d4c37}.panel{padding:20px;align-self:start}.panel h3{color:var(--navy)}.panel form,.edit-form{display:grid;gap:12px}.mini a,.mini span{display:grid;gap:4px;background:#fff4dc;border:1px solid #c4a36e;padding:10px}.learn{display:grid;grid-template-columns:minmax(0,1fr) 350px;min-height:calc(100vh - 82px);background:#071b2b}.screen{color:#f7ead0}.screen video{width:100%;aspect-ratio:16/9;background:#000}.screen>div:last-child{padding:28px clamp(18px,4vw,54px)}.screen h1{font-size:40px}.playlist{background:#efe0c5;border-left:2px solid #b98535;padding:18px;display:grid;align-content:start;gap:8px}.playlist b{color:var(--navy)}.playlist a{padding:11px;border:1px solid #b99868;color:#5e4930;background:#fff2d7}.playlist a.on{background:var(--navy);color:#f0d3a0}.post{padding:18px}.post h2{color:var(--navy)}.post img{margin-top:12px;width:100%;max-height:340px;object-fit:cover;filter:sepia(.35)}.auth{min-height:70vh;display:grid;grid-template-columns:1fr 420px;gap:40px;align-items:center}.center{text-align:center}.foot{padding:34px clamp(18px,6vw,90px);background:var(--navy);color:#c7b18a;border-top:2px solid var(--gold)}.foot b{color:var(--gold2);font-size:22px}.foot p{max-width:720px;line-height:1.8}
.admin-body{display:grid;grid-template-columns:282px 1fr;min-height:100vh;background:#f3e6cf}.admin-side{position:sticky;top:0;height:100vh;overflow:auto;background:var(--navy);border-right:2px solid var(--gold);padding:18px}.admin-side nav,.table-list{display:grid;gap:7px;margin-top:22px}.admin-side a{padding:10px 12px;color:#d3bd97;border:1px solid transparent;border-radius:var(--r)}.admin-side a:hover{border-color:#9b6c2e;background:rgba(255,255,255,.05);color:#f6d99d}.admin-main{padding:28px}.admin-head{display:flex;justify-content:space-between;align-items:end;margin-bottom:22px}.admin-head h1{margin:0;color:var(--navy);font-size:44px}.admin-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px}.metric{padding:18px;background:#fff3da}.metric b{display:block;color:#8b5719;font-size:34px}.metric span{color:#4d3e2c}.admin-card,.data-shell{padding:18px;margin-top:18px;background:#fff3da;border:1px solid #b99868;box-shadow:var(--shadow)}.module-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.module{background:#fff3da;border:1px solid #b99868;padding:18px;box-shadow:var(--shadow);display:grid;gap:10px}.module h3{color:var(--navy);margin:0}.module p{color:var(--muted);line-height:1.65}.module .links{display:flex;flex-wrap:wrap;gap:8px}.module .links a{border:1px solid #9b6c2e;padding:7px 10px;border-radius:var(--r);color:#6d4716}.admin-search{display:flex;gap:10px;margin-bottom:14px}.data-shell{overflow:auto}table{width:100%;border-collapse:collapse;min-width:900px}th,td{border-bottom:1px solid rgba(153,111,50,.32);padding:11px;text-align:left;max-width:270px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}th{color:#825318;background:#ead8b8}.ops{display:flex;gap:8px}.ops form{display:inline}.ops button{min-height:auto;padding:6px 9px}.edit-form{max-width:900px;background:#fff3da;border:1px solid #b99868;padding:18px;box-shadow:var(--shadow)}.edit-form label span{display:block;color:#80551d;margin-bottom:6px;font-weight:700}
@media(max-width:1000px){.nav-btn{display:block}.nav nav{display:none;position:absolute;top:82px;left:12px;right:12px;background:var(--navy);border:1px solid var(--gold);padding:12px}.nav nav.open{display:grid}.hero,.detail,.split,.split.wide,.learn,.auth,.admin-body{grid-template-columns:1fr}.grid,.grid.four,.admin-grid,.module-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.admin-side{position:relative;height:auto}.search{grid-template-columns:1fr}}@media(max-width:650px){.hero h1,.page h1,.detail h1{font-size:42px}.grid,.grid.four,.admin-grid,.module-grid{grid-template-columns:1fr}.head,.admin-head{display:grid;text-align:left}.hero{grid-template-columns:1fr}.altar{grid-template-columns:1fr 1fr}.brand b{font-size:18px}.nav{height:auto;min-height:74px}}
/* 2026-05-16 polish: show course covers without the old veil/filter. */
.cover img,.poster img{filter:none!important}