:root{
  --bg:#0d1117; --bg2:#131a24; --card:#161f2b; --line:#25303f;
  --txt:#e8edf4; --mut:#9fb0c4;
  --or:#ff8500; --or2:#ffa326; --bl:#4d90ff; --pu:#7d4cff;
  --rad:14px; --wrap:1180px;
  --ff:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;background:var(--bg);color:var(--txt);font:16px/1.75 var(--ff);
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--or2);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.25;font-weight:800;letter-spacing:-.02em;margin:0 0 .5em}
h1{font-size:clamp(1.9rem,5vw,3rem)}
h2{font-size:clamp(1.4rem,3.2vw,2rem);margin-top:2.2em}
h3{font-size:clamp(1.08rem,2.2vw,1.28rem)}
p{margin:0 0 1.15em}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;z-index:99;background:var(--or);color:#111;padding:10px 16px;border-radius:8px}
:focus-visible{outline:2px solid var(--or2);outline-offset:2px}

/* header */
.site-head{position:sticky;top:0;z-index:50;background:rgba(13,17,23,.92);
  backdrop-filter:saturate(160%) blur(10px);border-bottom:1px solid var(--line)}
.head-in{display:flex;align-items:center;gap:22px;min-height:64px}
.brand{display:flex;align-items:center;color:#fff;flex:0 0 auto}
.brand img{width:176px;height:auto;aspect-ratio:639/150}
.nav{display:flex;gap:22px;margin-left:auto;font-size:.94rem;font-weight:600}
.nav a{color:var(--mut)}
.nav a:hover,.nav a[aria-current]{color:#fff;text-decoration:none}
.burger{display:none;background:none;border:0;padding:8px;cursor:pointer}
.burger span{display:block;width:24px;height:2px;background:#fff;margin:5px 0;border-radius:2px}
.mnav{display:none;flex-direction:column;border-top:1px solid var(--line);padding:8px 20px 16px}
.mnav a{padding:11px 0;color:var(--mut);font-weight:600;border-bottom:1px solid var(--line)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:linear-gradient(180deg,var(--or2),var(--or));color:#1a1000;font-weight:800;
  padding:13px 26px;border-radius:999px;border:0;cursor:pointer;white-space:nowrap;
  box-shadow:0 6px 20px rgba(255,133,0,.28);transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(255,133,0,.4);text-decoration:none;color:#1a1000}
.btn-head{padding:10px 20px;font-size:.9rem}
.btn-lg{padding:16px 36px;font-size:1.06rem}
.btn-block{display:flex;width:100%}
.btn-ghost{background:transparent;color:var(--txt);border:1px solid var(--line);box-shadow:none}
.btn-ghost:hover{border-color:var(--or2);color:var(--or2);box-shadow:none}

/* breadcrumbs */
.crumbs{max-width:var(--wrap);margin:0 auto;padding:14px 20px 0;font-size:.85rem;color:var(--mut)}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0}
.crumbs li+li::before{content:"›";margin-inline-end:8px;color:#4a5a6e}
.crumbs a{color:var(--mut)}

/* hero */
.hero{padding:26px 0 34px;background:
  radial-gradient(1100px 380px at 12% -10%,rgba(255,133,0,.14),transparent 60%),
  radial-gradient(900px 340px at 88% 0,rgba(124,76,255,.14),transparent 60%)}
.hero-alt{background:
  radial-gradient(1000px 360px at 85% -10%,rgba(77,144,255,.16),transparent 60%),
  radial-gradient(900px 320px at 10% 0,rgba(255,133,0,.11),transparent 60%)}
.hero-in{display:grid;grid-template-columns:1.25fr .85fr;gap:38px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.82rem;font-weight:700;
  color:var(--mut);background:var(--card);border:1px solid var(--line);
  padding:6px 14px;border-radius:999px;margin:0 0 16px}
.dot{width:8px;height:8px;border-radius:50%;background:#25d366;box-shadow:0 0 0 3px rgba(37,211,102,.18)}
.lead{font-size:clamp(1rem,2.1vw,1.16rem);color:#c9d6e4;max-width:60ch}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0 26px}
.hero-facts{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:0;padding:0}
.hero-facts li{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:11px 13px}
.hero-facts strong{display:block;font-size:.7rem;text-transform:uppercase;letter-spacing:.07em;color:var(--mut);font-weight:700}
.hero-facts span{font-weight:800;font-size:.95rem}
.hero-card img{border-radius:20px;border:1px solid var(--line);width:100%;height:auto}

/* layout */
.cols{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:44px;padding-top:22px;padding-bottom:56px;align-items:start}
.content{min-width:0}
.content>p,.content>ul,.content>ol{color:#cfdae7}

/* tables */
.tbl-wrap{margin:26px 0;overflow-x:auto;border:1px solid var(--line);border-radius:var(--rad);background:var(--card)}
table{width:100%;border-collapse:collapse;font-size:.94rem;min-width:480px}
caption{text-align:start;padding:14px 16px;font-weight:800;color:#fff;font-size:1rem}
th,td{padding:12px 16px;border-top:1px solid var(--line);text-align:start;vertical-align:top}
thead th{background:var(--bg2);font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:var(--mut)}
tbody th{color:#fff;font-weight:700;white-space:nowrap}
tbody td{color:#c4d1e0}

/* callout */
.callout{background:linear-gradient(180deg,rgba(255,133,0,.1),rgba(255,133,0,.03));
  border:1px solid rgba(255,133,0,.32);border-inline-start:4px solid var(--or);
  border-radius:12px;padding:16px 20px;margin:26px 0}
.callout p{margin:0;color:#e3ecf6}

/* steps */
.steps{counter-reset:s;list-style:none;padding:0;margin:24px 0;display:grid;gap:14px}
.steps li{counter-increment:s;position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--rad);padding:18px 20px 18px 66px}
.steps li::before{content:counter(s);position:absolute;inset-inline-start:18px;top:18px;
  width:32px;height:32px;border-radius:50%;background:linear-gradient(180deg,var(--or2),var(--or));
  color:#1a1000;font-weight:800;display:grid;place-items:center;font-size:.95rem}
.steps h3{margin:0 0 4px;font-size:1.03rem}
.steps p{margin:0;color:#b8c6d6;font-size:.95rem}

/* ticks */
.ticks{list-style:none;padding:0;margin:20px 0;display:grid;gap:10px}
.ticks li{position:relative;padding-inline-start:30px;color:#cfdae7}
.ticks li::before{content:"";position:absolute;inset-inline-start:0;top:.62em;width:14px;height:8px;
  border-left:2.5px solid var(--or2);border-bottom:2.5px solid var(--or2);transform:rotate(-45deg)}

/* faq */
.faq{display:grid;gap:10px;margin:22px 0}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.faq summary{list-style:none;cursor:pointer;padding:15px 48px 15px 18px;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary h3{margin:0;font-size:1rem;font-weight:700;display:inline}
.faq summary::after{content:"";position:absolute;inset-inline-end:20px;top:22px;width:9px;height:9px;
  border-right:2px solid var(--or2);border-bottom:2px solid var(--or2);
  transform:rotate(45deg);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(-135deg)}
.faq details[open] summary{background:var(--bg2)}
.faq-a{padding:2px 18px 4px;border-top:1px solid var(--line)}
.faq-a p{margin:14px 0;color:#c2d0e0;font-size:.95rem}

/* cta + disclaimer */
.final-cta{margin:40px 0 10px;text-align:center}
.final-cta img{border-radius:var(--rad);border:1px solid var(--line);margin-bottom:18px}
.disclaimer{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin:26px 0 0}
.disclaimer p{margin:0;font-size:.86rem;color:var(--mut)}
.age{display:inline-grid;place-items:center;min-width:30px;height:22px;padding:0 6px;
  background:#c1121f;color:#fff;border-radius:5px;font-size:.72rem;font-weight:800;margin-inline-end:6px}

/* sidebar */
.side{display:grid;gap:16px;position:sticky;top:84px}
.side-box{background:var(--card);border:1px solid var(--line);border-radius:var(--rad);padding:18px}
.side-box h2{margin:0 0 10px;font-size:1rem}
.side-box p{font-size:.88rem;color:var(--mut);margin:0 0 12px}
.toc ol{margin:0;padding-inline-start:18px;font-size:.9rem;display:grid;gap:7px}
.toc a{color:#bcc9d8}
.toc a:hover{color:var(--or2)}

/* footer */
.site-foot{border-top:1px solid var(--line);background:var(--bg2);padding:38px 0 26px;margin-top:20px;color:#fff}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:28px}
.foot-txt{font-size:.87rem;color:var(--mut);margin-top:12px;max-width:44ch}
.foot-h{font-size:.95rem;margin:0 0 12px}
.foot-ul{list-style:none;padding:0;margin:0;display:grid;gap:8px;font-size:.89rem}
.foot-ul a{color:var(--mut)}
.foot-ul a:hover{color:var(--or2)}
.copy{border-top:1px solid var(--line);margin:26px 0 0;padding-top:16px;font-size:.82rem;color:var(--mut)}

/* 404 */
.nf{padding:70px 20px;text-align:center}
.nf img{margin:0 auto 24px}

@media(max-width:1020px){
  .cols{grid-template-columns:1fr;gap:30px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:26px}
  .side{position:static;grid-template-columns:1fr 1fr;display:grid}
}
@media(max-width:820px){
  .nav{display:none}
  .burger{display:block;margin-left:auto}
  .mnav[data-open]{display:flex}
  .btn-head{display:none}
  .hero-in{grid-template-columns:1fr;gap:26px}
  .hero-card{order:-1}
  .hero-facts{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr;gap:24px}
  .side{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* ---- компактный hero для внутренних страниц ---- */
.hero-sm{padding:24px 0 30px}
.hero-sm h1{margin-bottom:.35em}
.hero-sm .lead{max-width:66ch}

/* ---- карточки разделов ---- */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(258px,1fr));gap:14px;margin:24px 0 8px}
.card{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--rad);
  padding:18px 20px;color:inherit;transition:border-color .15s,transform .15s}
.card:hover{border-color:var(--or);transform:translateY(-2px);text-decoration:none}
.card h3{margin:0 0 6px;font-size:1.02rem;color:var(--or2)}
.card p{margin:0;font-size:.9rem;color:#b6c4d4;line-height:1.6}

/* ---- врезка «читать дальше» ---- */
.more{border-inline-start:3px solid var(--or);padding-inline-start:14px;
  color:#b9c7d7;font-size:.94rem;margin:18px 0 22px}

/* ---- блок «что дальше» ---- */
.next-box{background:var(--bg2);border:1px solid var(--line);border-radius:var(--rad);
  padding:18px 22px;margin:32px 0 0}
.next-box h2{margin:0 0 8px;font-size:1.05rem}
.next-box p{margin:0;color:#c2d0e0;font-size:.95rem}

/* текущая страница в футере — не ссылка */
.foot-cur{color:var(--or2);font-weight:600}

/* ============ МОБИЛЬНАЯ ОПТИМИЗАЦИЯ ============ */
@media(max-width:820px){
  /* Тач-цели минимум 48px (требование Lighthouse) */
  .nav a,.mnav a,.toc a,.foot-ul a,.crumbs a{min-height:44px;display:flex;align-items:center}
  .toc ol{gap:2px}
  .toc a{padding:6px 0}
  .foot-ul{gap:2px}
  .foot-ul a{padding:6px 0}
  .faq summary{padding:16px 46px 16px 16px;min-height:56px;display:flex;align-items:center}
  .btn{min-height:48px}
  .card{padding:16px 18px}

  /* Ссылки в тексте плотно идут — увеличиваем зону промаха */
  .content p a{padding:2px 0}

  /* Таблицы: не выпадают за экран */
  .tbl-wrap{margin:20px -16px;border-radius:0;border-left:0;border-right:0}
  table{min-width:520px;font-size:.9rem}
  th,td{padding:11px 14px}
  caption{padding:13px 16px}

  /* Компактнее блоки */
  .steps li{padding:16px 18px 16px 58px}
  .steps li::before{inset-inline-start:16px;top:16px}
  .callout,.next-box,.disclaimer{padding:14px 16px}
  .final-cta{margin:30px 0 8px}
  h2{margin-top:1.8em}
  .side{gap:12px}
}

@media(max-width:420px){
  .hero-facts{grid-template-columns:1fr 1fr;gap:8px}
  .cta-row .btn{width:100%}
  .btn-lg{padding:15px 22px;font-size:1rem}
  .brand img{width:150px}
}

/* ============ A11Y + РЕНДЕР ============ */
/* Ссылки внутри текста различимы не только цветом (требование WCAG) */
.content p a,.content li a,.faq-a a,.next-box a,.disclaimer a,.more a{
  text-decoration:underline;text-underline-offset:2px;text-decoration-thickness:1px;
  text-decoration-color:rgba(255,163,38,.5)}
.content p a:hover,.content li a:hover,.faq-a a:hover,.next-box a:hover{
  text-decoration-color:var(--or2)}

/* Тяжёлые блоки ниже первого экрана не считаются до прокрутки:
   снимает основную нагрузку со Style & Layout */
.faq details,.tbl-wrap,.cards,.final-cta,.site-foot{content-visibility:auto}
.faq details{contain-intrinsic-size:auto 62px}
.tbl-wrap{contain-intrinsic-size:auto 320px}
.cards{contain-intrinsic-size:auto 420px}
.final-cta{contain-intrinsic-size:auto 320px}
.site-foot{contain-intrinsic-size:auto 420px}