:root{--bg:#f5f7fb;--card:#fff;--text:#202a39;--muted:#64748b;--nav:#0b2447;--nav2:#174b7a;--gold:#c79a3b;--line:#dce5ef;--link:#0e5f9e;--shadow:0 14px 38px rgba(11,36,71,.10);--radius:18px;--fs:1}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Tahoma,"Segoe UI",Arial,sans-serif;line-height:1.95;font-size:calc(16px * var(--fs))}
body.dark{--bg:#08111f;--card:#111c2c;--text:#edf4ff;--muted:#aab8ca;--nav:#050b14;--nav2:#102b48;--line:#263951;--link:#79bdff;--shadow:0 14px 38px rgba(0,0,0,.32)}
a{color:var(--link)}.header{position:sticky;top:0;z-index:100;background:linear-gradient(135deg,var(--nav),var(--nav2));color:#fff;box-shadow:0 5px 20px rgba(0,0,0,.18)}.header-inner{max-width:1340px;margin:auto;padding:11px 18px;display:flex;gap:13px;align-items:center;flex-wrap:wrap}.brand{color:#fff;text-decoration:none;font-weight:800;white-space:nowrap}.nav{display:flex;gap:5px;flex-wrap:wrap}.nav a{color:#dce9f7;text-decoration:none;padding:7px 9px;border-radius:8px;font-size:.9rem}.nav a:hover{background:rgba(255,255,255,.12)}.menu{display:none}.tools{margin-right:auto;display:flex;gap:5px}.tool{border:1px solid rgba(255,255,255,.25);background:rgba(255,255,255,.1);color:#fff;border-radius:8px;padding:7px 9px;cursor:pointer}
.hero{background:radial-gradient(circle at 12% 20%,rgba(199,154,59,.28),transparent 28%),linear-gradient(135deg,#0b2447,#1d5d96);color:#fff;padding:74px 22px}.hero-inner{max-width:1160px;margin:auto}.eyebrow{color:#f2ce78;font-weight:700}.hero h1{font-size:clamp(2rem,5vw,4rem);line-height:1.3;margin:.2em 0}.hero p{max-width:900px;color:#dce9f7;font-size:1.15rem}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}.btn{display:inline-block;padding:11px 17px;border-radius:10px;text-decoration:none}.primary{background:var(--gold);color:#17120a}.ghost{border:1px solid rgba(255,255,255,.35);color:#fff;background:rgba(255,255,255,.07)}
.container{max-width:1160px;margin:auto;padding:34px 20px 70px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card,.panel,.article{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.card{padding:22px;display:flex;flex-direction:column}.card .num{color:var(--gold);font-size:1.25rem;font-weight:900}.card h2,.card h3{margin:.25em 0;line-height:1.5}.card p{color:var(--muted)}.card a{margin-top:auto;font-weight:700}.panel{padding:25px;margin-bottom:22px}.layout{display:grid;grid-template-columns:270px 1fr;gap:24px}.side{position:sticky;top:80px;align-self:start;background:var(--card);border:1px solid var(--line);border-radius:15px;padding:16px;max-height:calc(100vh - 95px);overflow:auto}.side a{display:block;text-decoration:none;padding:8px;border-radius:8px}.side a:hover{background:rgba(14,95,158,.08)}.article{padding:30px;margin-bottom:22px}.article h1,.article h2{color:var(--nav2);line-height:1.45}body.dark .article h1,body.dark .article h2{color:#8fcaff}.lead{font-size:1.12rem;color:var(--muted)}.callout{border-right:4px solid var(--gold);background:rgba(199,154,59,.10);padding:14px 16px;border-radius:9px}.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.step{background:rgba(14,95,158,.07);border:1px solid var(--line);padding:12px;border-radius:10px}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse}th,td{border:1px solid var(--line);padding:11px;text-align:right;vertical-align:top}th{background:rgba(14,95,158,.08)}.search{display:flex;gap:8px}.search input{flex:1;padding:13px;border-radius:10px;border:1px solid var(--line);background:var(--card);color:var(--text);font:inherit}.result{padding:14px 0;border-bottom:1px solid var(--line)}.breadcrumbs{font-size:.92rem;color:var(--muted);margin-bottom:15px}.tag{display:inline-block;padding:4px 9px;border:1px solid var(--line);border-radius:999px;margin:3px;font-size:.86rem}.footer{background:var(--nav);color:#cdd8e6;padding:30px 20px}.footer-inner{max-width:1160px;margin:auto;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap}.footer a{color:#fff}.az{display:flex;gap:6px;flex-wrap:wrap}.az a{display:inline-block;padding:6px 10px;border:1px solid var(--line);border-radius:8px;text-decoration:none}
@media(max-width:900px){.grid{grid-template-columns:1fr 1fr}.layout{grid-template-columns:1fr}.side{position:relative;top:auto;max-height:none}.steps{grid-template-columns:1fr 1fr}.menu{display:block}.nav{display:none;width:100%;order:3}.nav.open{display:flex;flex-direction:column}.header-inner{padding:9px 12px}}
@media(max-width:600px){.grid{grid-template-columns:1fr}.steps{grid-template-columns:1fr}.container{padding-inline:13px}.article{padding:21px}.hero{padding-top:50px}}
@media print{.header,.side,.footer,.actions,.tools{display:none!important}body{background:#fff;color:#000}.layout{display:block}.article,.panel,.card{box-shadow:none;border:1px solid #bbb}}

.hero{position:relative;overflow:hidden;min-height:500px;display:flex;align-items:center}.hero:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 82% 18%,rgba(255,255,255,.14),transparent 18%),radial-gradient(circle at 12% 76%,rgba(199,154,59,.25),transparent 24%)}.hero-grid{position:absolute;inset:0;opacity:.13;background-image:linear-gradient(rgba(255,255,255,.18) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.18) 1px,transparent 1px);background-size:42px 42px}.hero-inner{position:relative;z-index:2}.hero-badge{display:inline-flex;padding:7px 12px;border:1px solid rgba(255,255,255,.25);border-radius:999px;background:rgba(255,255,255,.08)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:-42px;position:relative;z-index:3}.stat{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:var(--shadow)}.stat strong{display:block;font-size:2rem;color:var(--nav2)}body.dark .stat strong{color:#9fd2ff}.stat span{color:var(--muted)}
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.feature{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:var(--shadow)}.feature .ico{font-size:2rem}.timeline{position:relative;padding-right:24px}.timeline:before{content:"";position:absolute;right:6px;top:0;bottom:0;width:3px;background:linear-gradient(var(--gold),var(--nav2))}.timeline-item{position:relative;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px;margin:0 24px 18px 0}.timeline-item:before{content:"";position:absolute;right:-26px;top:22px;width:14px;height:14px;background:var(--gold);border:3px solid var(--bg);border-radius:50%}.timeline-item .year{color:var(--gold);font-weight:900}
.recommendations{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.recommendation{border:1px solid var(--line);border-radius:12px;padding:15px;background:rgba(14,95,158,.04)}.citation-box{background:rgba(108,92,231,.08);border:1px solid rgba(108,92,231,.25);padding:15px;border-radius:12px}.citation-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px}.citation-tabs button{border:1px solid var(--line);background:var(--card);color:var(--text);padding:7px 10px;border-radius:8px}.reading-mode .header,.reading-mode .footer,.reading-mode .side,.reading-mode .breadcrumbs{display:none!important}.reading-mode .container{max-width:880px}.reading-mode .layout{display:block}.reading-mode .article{box-shadow:none;border:none;padding:12px 0}.floating-tools{position:fixed;left:18px;bottom:18px;z-index:90;display:flex;flex-direction:column;gap:8px}.float-btn{width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:var(--card);color:var(--text);box-shadow:var(--shadow);cursor:pointer}.progress-bar{position:fixed;top:0;right:0;height:3px;background:var(--gold);z-index:200;width:0}.back-top{display:none}.back-top.show{display:block}.media-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.media-card{background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow)}.media-visual{height:180px;background:linear-gradient(135deg,#0b2447,#1d5d96);display:grid;place-items:center;color:#fff;font-size:3rem}.media-card .body{padding:17px}.author-hero{display:grid;grid-template-columns:220px 1fr;gap:28px;align-items:center}.author-avatar{width:210px;height:210px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--nav),var(--gold));color:#fff;font-size:4rem;border:8px solid var(--card);box-shadow:var(--shadow)}
@media(max-width:900px){.stats-grid,.feature-grid{grid-template-columns:1fr 1fr}.recommendations,.media-grid{grid-template-columns:1fr 1fr}.author-hero{grid-template-columns:1fr;text-align:center}.author-avatar{margin:auto}}@media(max-width:600px){.stats-grid,.feature-grid,.recommendations,.media-grid{grid-template-columns:1fr}.stats-grid{margin-top:18px}.hero{min-height:auto}}