:root{--bg:#07090d;--panel:rgba(15,19,27,.93);--panel2:rgba(21,27,37,.94);--text:#eef3f6;--muted:#aab5bd;--accent:#71ffc9;--accent2:#72b7ff;--violet:#b59cff;--gold:#ffd77a;--line:rgba(113,255,201,.24);--shadow:0 22px 70px rgba(0,0,0,.36)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100vh;color:var(--text);background:#07090d;font-family:Inter,"Segoe UI",Arial,sans-serif;line-height:1.55;overflow-x:hidden}body:before{content:"";position:fixed;inset:0;z-index:-2;background:linear-gradient(rgba(4,7,10,.78),rgba(4,7,10,.94)),url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='512' height='444' viewBox='0 0 512 444'%3E%3Cg fill='none' stroke='%2371ffc9' stroke-opacity='.18' stroke-width='1.1'%3E%3Cpath d='M256 4 508 440 4 440Z'/%3E%3Cpath d='M256 4 382 222 130 222Z'/%3E%3Cpath d='M130 222 256 440 4 440Z'/%3E%3Cpath d='M382 222 508 440 256 440Z'/%3E%3Cpath d='M256 113 319 222 193 222Z'/%3E%3Cpath d='M256 222 319 331 193 331Z'/%3E%3Cpath d='M193 331 256 440 130 440Z'/%3E%3Cpath d='M319 331 382 440 256 440Z'/%3E%3C/g%3E%3C/svg%3E");background-size:auto,512px 444px;background-attachment:fixed}body:after{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;background:radial-gradient(circle at 14% 12%,rgba(113,255,201,.08),transparent 28%),radial-gradient(circle at 85% 75%,rgba(181,156,255,.08),transparent 30%)}a{color:inherit}.bar{position:sticky;top:0;z-index:20;background:rgba(6,8,12,.93);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.bar-inner{max-width:1180px;margin:auto;padding:14px 22px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none}.mark{font-size:32px;color:var(--accent);text-shadow:0 0 18px rgba(113,255,201,.55)}.brand b{display:block;font-size:19px;letter-spacing:.05em}.brand small{display:block;color:var(--muted);font-size:10px;letter-spacing:.14em}.nav{display:flex;flex-wrap:wrap;gap:7px}.nav a{font-size:13px;text-decoration:none;padding:8px 10px;border:1px solid transparent;border-radius:8px;color:#dce3e7}.nav a:hover,.nav a.active{border-color:var(--line);color:var(--accent);background:rgba(255,255,255,.03)}main{max-width:1180px;margin:auto;padding:48px 22px 76px}.hero{padding:48px;border:1px solid var(--line);border-radius:20px;background:linear-gradient(135deg,rgba(113,255,201,.065),rgba(181,156,255,.045)),var(--panel);box-shadow:var(--shadow)}.eyebrow{font-size:11px;font-weight:850;text-transform:uppercase;letter-spacing:.2em;color:var(--accent)}h1{font-size:clamp(36px,6vw,66px);line-height:1.03;margin:10px 0 16px}h2{margin-top:0}.hero p{max-width:900px;color:#c8d1d7;font-size:17px}.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}.btn{display:inline-block;text-decoration:none;font-weight:750;padding:11px 16px;border-radius:9px;border:1px solid var(--line);background:rgba(255,255,255,.035)}.btn.primary{background:var(--accent);color:#07110d}.btn.violet{border-color:rgba(181,156,255,.45);color:#d7caff}.btn:hover{transform:translateY(-1px);filter:brightness(1.06)}.section-head{display:flex;gap:14px;align-items:center;margin:46px 0 18px}.section-head h2{margin:0;font-size:23px}.section-head:after{content:"";height:1px;flex:1;background:linear-gradient(90deg,var(--line),transparent)}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}.card{padding:22px;border:1px solid rgba(255,255,255,.1);border-radius:14px;background:var(--panel2);box-shadow:0 9px 28px rgba(0,0,0,.18)}.card h3{margin:0 0 8px;color:var(--accent)}.card p{color:var(--muted);margin:0 0 14px}.card .more{color:var(--accent2);text-decoration:none;font-weight:750}.feature{display:grid;grid-template-columns:1fr 1fr;gap:16px}.panel{padding:27px;border:1px solid rgba(255,255,255,.1);border-radius:14px;background:var(--panel)}.panel p,.panel li{color:#bac4cb}.book{display:grid;grid-template-columns:minmax(180px,280px) 1fr;gap:24px;align-items:center}.book img{width:100%;border-radius:8px;box-shadow:0 12px 35px rgba(0,0,0,.4);background:white}.tagrow{display:flex;gap:7px;flex-wrap:wrap}.tag{padding:5px 9px;border-radius:999px;border:1px solid rgba(255,255,255,.1);color:#cad4db;font-size:11px;background:rgba(255,255,255,.03)}.video-shell{aspect-ratio:16/9;border:1px solid rgba(255,255,255,.12);border-radius:14px;overflow:hidden;background:#000;box-shadow:var(--shadow)}.video-shell iframe{width:100%;height:100%;border:0}.reader-shell{height:calc(100vh - 180px);min-height:620px;border:1px solid rgba(255,255,255,.12);border-radius:12px;overflow:hidden;background:#101218}.reader-shell iframe{width:100%;height:100%;border:0;background:white}.reader-tools{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:0 0 12px}.reader-tools input{width:80px;padding:9px;border-radius:8px;border:1px solid rgba(255,255,255,.16);background:#10151d;color:white}.reader-tools button{padding:9px 12px;border:1px solid var(--line);border-radius:8px;background:rgba(255,255,255,.04);color:white;cursor:pointer}.downloads{width:100%;border-collapse:separate;border-spacing:0 9px}.downloads td{padding:13px 14px;background:var(--panel2);border-top:1px solid rgba(255,255,255,.08);border-bottom:1px solid rgba(255,255,255,.08)}.downloads td:first-child{border-left:1px solid rgba(255,255,255,.08);border-radius:9px 0 0 9px}.downloads td:last-child{border-right:1px solid rgba(255,255,255,.08);border-radius:0 9px 9px 0;text-align:right}.downloads a{color:var(--accent);font-weight:750;text-decoration:none}.note{padding:14px 16px;border-radius:10px;border:1px solid rgba(255,215,122,.28);background:rgba(255,215,122,.04);color:#d7d0bb}.muted{color:var(--muted)}footer{max-width:1180px;margin:auto;padding:23px;border-top:1px solid rgba(255,255,255,.08);text-align:center;color:#75818a;font-size:12px}@media(max-width:780px){.bar-inner{align-items:flex-start;flex-direction:column;gap:9px}.hero{padding:30px 23px}.feature,.book{grid-template-columns:1fr}.book img{max-width:260px}.reader-shell{height:72vh;min-height:480px}.downloads,.downloads tbody,.downloads tr,.downloads td{display:block;width:100%}.downloads tr{margin-bottom:12px}.downloads td{border-left:1px solid rgba(255,255,255,.08)!important;border-right:1px solid rgba(255,255,255,.08)!important;border-radius:0!important}.downloads td:first-child{border-radius:9px 9px 0 0!important}.downloads td:last-child{border-radius:0 0 9px 9px!important;text-align:left}}

.shop-feature{margin-top:24px;padding:26px 28px;border-radius:18px;border:1px solid rgba(255,215,122,.68);background:linear-gradient(120deg,rgba(255,215,122,.16),rgba(255,171,64,.07)),rgba(24,20,12,.95);box-shadow:0 18px 55px rgba(0,0,0,.28),0 0 34px rgba(255,215,122,.08)}
.shop-kicker{font-size:11px;font-weight:900;letter-spacing:.2em;color:var(--gold);margin-bottom:7px}.shop-copy{display:flex;align-items:center;justify-content:space-between;gap:24px}.shop-copy h2{font-size:clamp(28px,4vw,42px);margin:0 0 6px;color:#ffe6a5}.shop-copy p{margin:0;max-width:760px;color:#d7d0bb}.shop-btn{display:inline-block;white-space:nowrap;text-decoration:none;font-weight:900;padding:14px 20px;border-radius:10px;background:var(--gold);color:#191205;box-shadow:0 0 24px rgba(255,215,122,.18)}.shop-btn:hover{transform:translateY(-2px);filter:brightness(1.05)}.shop-card{border-color:rgba(255,215,122,.42)}.shop-card h3{color:var(--gold)}
.eski-shop-feature{margin-top:22px;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 25px;border-radius:15px;border:1px solid rgba(255,215,122,.5);background:linear-gradient(120deg,rgba(255,215,122,.1),rgba(181,156,255,.04)),rgba(18,16,13,.92)}.eski-shop-feature h2{margin:3px 0 4px;color:#ffe3a0}.eski-shop-feature p{margin:0;color:#cfc6ae}
@media(max-width:780px){.shop-copy,.eski-shop-feature{align-items:flex-start;flex-direction:column}.shop-btn{white-space:normal}}

/* Master-home background: a single hexagon built from six recursive Sierpiński fields. */
body.homepage:before{background:linear-gradient(rgba(4,7,10,.66),rgba(4,7,10,.92)),radial-gradient(circle at 50% 43%,rgba(113,255,201,.08),transparent 48%),url("hex-sierpinski.svg");background-repeat:no-repeat,no-repeat,no-repeat;background-position:center,center,center 76px;background-size:auto,auto,min(1120px,112vw) auto;background-attachment:fixed,fixed,fixed}
body.homepage:after{background:radial-gradient(circle at 15% 12%,rgba(113,255,201,.08),transparent 26%),radial-gradient(circle at 84% 74%,rgba(181,156,255,.09),transparent 31%),radial-gradient(circle at 50% 38%,rgba(114,183,255,.055),transparent 36%)}
@media(max-width:780px){body.homepage:before{background-position:center,center,center 145px;background-size:auto,auto,138vw auto}}

/* Enriched project-note / guide components */
.intent-grid .card{min-height:220px}.intent-grid .card h3{font-size:18px}.media-note h2{font-size:clamp(25px,4vw,38px)}.tracklist{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:7px;margin:18px 0}.tracklist span{padding:8px 10px;border:1px solid rgba(255,255,255,.09);border-radius:8px;background:rgba(255,255,255,.025);color:#c6d0d6;font-size:13px}.evidence-row{display:grid;grid-template-columns:auto 1fr auto auto 1fr auto auto 1fr;gap:8px;align-items:center;margin-top:20px;padding:14px;border:1px solid rgba(255,255,255,.1);border-radius:10px;background:rgba(255,255,255,.025)}.evidence-row span{color:var(--muted);font-size:12px}.evidence-row b{color:var(--accent);font-size:13px}pre{overflow:auto;padding:16px;border-radius:10px;border:1px solid rgba(255,255,255,.1);background:#05070a;color:#cce9df}code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace}@media(max-width:850px){.evidence-row{grid-template-columns:1fr}.evidence-row span:nth-of-type(2),.evidence-row span:nth-of-type(4){display:none}}