/* методИИчка — стиль на основе дизайн-системы Constrana */
:root{
  --navy:#060B59; --navy-2:#0F156B; --ink:#01031D; --muted:#52546E; --label:#4E5172;
  --line:#DADCE8; --soft:#F4F5FA; --chip:#ECEDF5; --blue:#1F5A99; --blue-soft:#E8F0F8;
  --white:#FFFFFF; --amber:#B7791F; --amber-soft:#FBF3E4; --green:#2F7D4F; --green-soft:#E7F4EC;
  --serif:'Roboto Slab',Georgia,'Times New Roman',serif;
  --sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--white);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:var(--navy);text-decoration:none}
img{max-width:100%;height:auto;display:block}
.wrap{max-width:1200px;margin:0 auto;padding:0 clamp(20px,5vw,48px)}

/* Header */
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.96);backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:14px;padding-bottom:14px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-weight:700;font-size:22px;color:var(--ink);letter-spacing:-.01em}
.brand b{color:var(--blue)}
.nav{display:flex;gap:26px;align-items:center}
.nav a{color:var(--ink);font-size:15px;font-weight:500;transition:color .15s}
.nav a:hover,.nav a.active{color:var(--blue)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:8px;font-weight:600;font-size:15px;transition:background .15s,color .15s,border-color .15s;cursor:pointer;border:1px solid transparent}
.btn-primary{background:var(--navy);color:#fff}
.btn-primary:hover{background:var(--navy-2)}
.btn-ghost{border-color:var(--line);color:var(--navy);background:#fff}
.btn-ghost:hover{border-color:var(--navy)}
.btn-light{background:#fff;color:var(--navy)}
.btn-light:hover{background:#E5E6F5}
.btn-outline-light{border-color:rgba(255,255,255,.4);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.1)}
.btn-sm{padding:9px 18px;font-size:14px}
.menu-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:8px 10px;cursor:pointer}
@media (max-width:860px){
  .nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;align-items:flex-start;padding:16px 24px 20px;border-bottom:1px solid var(--line);gap:14px}
  .nav.open{display:flex}
  .menu-toggle{display:inline-flex}
  .site-header .btn-primary{display:none}
}

/* Hero */
.hero{padding:72px 0 64px;text-align:center;background:radial-gradient(1200px 500px at 50% -10%,#EEF2FA 0%,#fff 60%)}
.hero-logo{width:min(860px,100%);margin:0 auto;mix-blend-mode:multiply}
.hero-edition{display:inline-flex;margin-top:28px;padding:6px 14px;border-radius:999px;background:var(--chip);color:var(--label);font-size:13px;font-weight:600;letter-spacing:.02em}
.hero-lead{max-width:680px;margin:20px auto 0;color:var(--muted);font-size:18px}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:32px}

/* Sections */
section{padding:88px 0}
.bg-soft{background:var(--soft)}
.bg-navy{background:var(--navy);color:#fff;position:relative;overflow:hidden}
.eyebrow{font-weight:600;font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--label)}
.bg-navy .eyebrow{color:#A7AACB}
h2.title{font-size:clamp(26px,3vw,34px);font-weight:600;line-height:1.2;margin:10px 0 14px;letter-spacing:-.01em}
.sub{font-size:17px;color:var(--muted);max-width:720px;margin:0}
.bg-navy .sub{color:#C9CBE9}
.head{margin-bottom:44px}

.quote-big{font-family:var(--serif);font-weight:700;font-size:clamp(28px,4.4vw,52px);line-height:1.12;margin:16px 0 22px;max-width:18ch}
.quote-big span{color:#8FB4E0}
.navy-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;margin-top:40px}
.navy-card{border:1px solid rgba(255,255,255,.16);border-radius:14px;padding:22px;background:rgba(255,255,255,.04)}
.navy-card p{margin:0;color:#DDE0F3;font-size:15px}
.watermark{position:absolute;right:-60px;bottom:-40px;font-family:var(--serif);font-weight:700;font-size:420px;line-height:1;color:rgba(255,255,255,.04);pointer-events:none;user-select:none}

/* Two columns */
.cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:40px;align-items:start}
.check{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.check li{position:relative;padding-left:28px;color:var(--ink)}
.check li:before{content:"";position:absolute;left:0;top:7px;width:14px;height:14px;background:var(--navy);clip-path:polygon(50% 0%,100% 100%,0% 100%)}
.check.muted li:before{background:#B9BCD3}
.check.muted li{color:var(--muted)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 14px;font-size:14px;font-weight:500}

/* Steps (triangles) */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:32px 28px}
.step{display:flex;flex-direction:column;gap:12px}
.tri{position:relative;width:50px;height:46px}
.tri:before{content:"";position:absolute;inset:0;background:var(--navy);clip-path:polygon(50% 0%,100% 100%,0% 100%)}
.tri span{position:relative;display:flex;align-items:flex-end;justify-content:center;height:100%;padding-bottom:6px;font-family:var(--serif);font-weight:700;font-size:15px;color:#fff}
.step h3{font-size:17px;margin:0;font-weight:600}
.step p{margin:0;font-size:14px;color:var(--muted)}
.step.accent .tri:before{background:var(--blue)}

/* Cards */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.cards-5{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px;display:flex;flex-direction:column;gap:12px;transition:box-shadow .15s,transform .15s}
a.card:hover{box-shadow:0 6px 18px rgba(6,11,89,.12);transform:translateY(-2px)}
.card h3{margin:0;font-size:18px;font-weight:600;color:var(--ink)}
.card p{margin:0;font-size:14.5px;color:var(--muted)}
.icon{width:44px;height:44px;border-radius:8px;background:var(--chip);display:flex;align-items:center;justify-content:center}
.card .more{margin-top:auto;font-size:14px;font-weight:600;color:var(--blue)}

/* Contents */
.parts{display:grid;gap:18px}
.part{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden}
.part-head{display:flex;align-items:baseline;gap:14px;padding:18px 24px;border-bottom:1px solid var(--line);background:#FAFAFD}
.part-num{font-family:var(--serif);font-weight:700;color:var(--blue);font-size:15px;min-width:64px}
.part-head h3{margin:0;font-size:18px;font-weight:600}
.ch{display:flex;align-items:center;gap:16px;padding:14px 24px;border-top:1px solid #EEF0F6}
.ch:first-of-type{border-top:0}
.ch-n{font-family:var(--serif);font-weight:700;color:var(--label);width:28px;flex:none}
.ch-t{flex:1;font-weight:500;color:var(--ink)}
a.ch:hover .ch-t{color:var(--blue)}
.badge{flex:none;font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;white-space:nowrap}
.b-ready{background:var(--green-soft);color:var(--green)}
.b-part{background:var(--blue-soft);color:var(--blue)}
.b-draft{background:var(--chip);color:var(--label)}
.legend{display:flex;gap:16px;flex-wrap:wrap;margin-top:18px;font-size:13px;color:var(--muted)}

/* Contact */
.contact-card{background:var(--soft);border:1px solid var(--line);border-radius:16px;padding:30px;display:flex;flex-direction:column;gap:18px}
.contact-card h3{margin:0;font-size:20px}
.contact-row{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:500;color:var(--ink)}
.contact-row:hover{color:var(--blue)}
.sep{height:1px;background:var(--line)}

/* Footer */
.site-footer{background:var(--ink);color:#fff;padding:52px 0 28px}
.site-footer .top{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.site-footer .brand{color:#fff}
.site-footer .brand b{color:#8FB4E0}
.site-footer nav{display:flex;gap:24px;flex-wrap:wrap}
.site-footer nav a{color:#C9CBE9;font-size:14px}
.site-footer nav a:hover{color:#fff}
.site-footer .bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:28px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:#A7AACB}

/* ---------- Reader ---------- */
.reader{display:grid;grid-template-columns:290px minmax(0,1fr);gap:56px;padding-top:40px;padding-bottom:80px}
.toc{position:sticky;top:86px;align-self:start;max-height:calc(100vh - 110px);overflow:auto;padding-right:8px;font-size:14px}
.toc-title{font-weight:600;font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--label);margin:0 0 12px}
.toc ul{list-style:none;margin:0;padding:0}
.toc li a{display:block;padding:5px 10px;border-left:2px solid transparent;color:var(--muted);line-height:1.35}
.toc li a:hover{color:var(--navy)}
.toc li a.active{color:var(--navy);border-left-color:var(--blue);background:var(--soft);font-weight:500}
.toc .lvl1>a{font-weight:600;color:var(--ink);margin-top:14px}
.toc .lvl2>a{padding-left:20px}
.toc .lvl3>a{padding-left:32px;font-size:13px}
.toc .lvl3{display:none}
.toc .lvl3.show{display:block}
.toc-btn{display:none}
@media (max-width:980px){
  .reader{grid-template-columns:1fr;gap:0}
  .toc{position:fixed;inset:64px 0 0 0;max-height:none;background:#fff;z-index:25;padding:20px 24px;display:none;border-top:1px solid var(--line)}
  .toc.open{display:block}
  .toc-btn{display:inline-flex;position:fixed;right:18px;bottom:18px;z-index:26;box-shadow:0 6px 18px rgba(6,11,89,.25)}
}
.progress{position:fixed;top:0;left:0;height:3px;background:var(--blue);width:0;z-index:40}

.prose{max-width:760px;font-size:17px;line-height:1.7}
.prose h1{font-family:var(--serif);font-size:clamp(28px,3.4vw,40px);line-height:1.15;margin:72px 0 8px;padding-top:28px;border-top:3px solid var(--navy);letter-spacing:-.01em}
.prose h1:first-child{margin-top:0}
.prose h2{font-family:var(--serif);font-size:clamp(24px,2.6vw,30px);line-height:1.2;margin:56px 0 18px;color:var(--navy)}
.prose h3{font-size:21px;font-weight:600;line-height:1.3;margin:42px 0 12px}
.prose h4{font-size:17px;font-weight:600;margin:30px 0 8px;color:var(--ink)}
.prose h5{font-size:16px;font-weight:600;margin:24px 0 6px;color:var(--label)}
.prose p{margin:0 0 16px}
.prose ul,.prose ol{margin:0 0 18px;padding-left:24px}
.prose li{margin:4px 0}
.prose li::marker{color:var(--blue)}
.prose strong{font-weight:600}
.prose a{color:var(--blue);text-decoration:underline;text-underline-offset:3px;word-break:break-word}
.prose blockquote{margin:24px 0;padding:18px 22px;background:var(--blue-soft);border-left:4px solid var(--blue);border-radius:0 10px 10px 0;color:var(--ink)}
.prose blockquote p:last-child{margin-bottom:0}
.prose hr{border:0;height:1px;background:var(--line);margin:40px 0}
.prose code{font-family:var(--mono);font-size:.88em;background:var(--chip);padding:2px 6px;border-radius:4px}
.prose pre{background:#0B1040;color:#E3E6FA;padding:20px 22px;border-radius:12px;overflow:auto;margin:0 0 20px;font-size:14px;line-height:1.6}
.prose pre code{background:none;padding:0;color:inherit;font-size:inherit}
.prose table{width:100%;border-collapse:collapse;margin:0 0 22px;font-size:15px;display:block;overflow-x:auto}
.prose th,.prose td{border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top}
.prose th{background:var(--soft);font-weight:600}
.prose .math{overflow-x:auto;padding:6px 0;margin:0 0 18px}
.callout{margin:24px 0;padding:18px 22px;border-radius:12px;background:var(--amber-soft);border:1px solid #F0DDB8;font-size:15.5px}
.callout strong{color:var(--amber)}
.reader-intro{background:var(--soft);border-bottom:1px solid var(--line);padding:44px 0 36px}
.reader-intro h1{font-family:var(--serif);font-size:clamp(28px,3.4vw,40px);margin:8px 0 8px}
.reader-intro p{margin:0;color:var(--muted)}

/* Game link block */
.game-cta{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding:18px 22px;border:1px dashed var(--blue);border-radius:12px;margin:0 0 20px;background:#fff}