/* =========================================================================
   Duel Зеркало — рабочий доступ (RU)  ·  main.css
   Тема B: тёмный slate + бирюза «статус-терминал». Self-contained.
   Класс-контракт совпадает с сеткой; отличается палитра и подача.
   ========================================================================= */

:root{
  --bg:#0b0f12; --bg-2:#10161b; --bg-3:#161f26;
  --ink:#e8f1f0; --ink-2:#a9bdbb; --muted:#6f8784;
  --acc:#19c37d; --acc-2:#0ea968; --cyan:#2dd4bf; --warn:#ffb454; --bad:#ff6b6b;
  --line:#1f2c31; --card:#10171c; --card-2:#0c1216;
  --r:10px; --r-sm:7px; --maxw:1120px;
  --shadow:0 16px 44px -22px rgba(0,0,0,.8);
  --mono:'SFMono-Regular',Consolas,'Liberation Mono',Menlo,monospace;
  --font:'Segoe UI',system-ui,-apple-system,Roboto,Arial,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
html.nav-open{overflow:hidden}
body{
  margin:0;font-family:var(--font);background:var(--bg);color:var(--ink);
  line-height:1.7;font-size:17px;-webkit-font-smoothing:antialiased;
  background-image:radial-gradient(900px 480px at 88% -120px,rgba(25,195,125,.13),transparent),
                   radial-gradient(700px 380px at -8% 4%,rgba(45,212,191,.06),transparent);
  background-attachment:fixed;
}
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:20px}
img{max-width:100%;height:auto;display:block}
a{color:var(--cyan)}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.25;margin:0 0 .5em;font-weight:800;letter-spacing:-.01em}
h1{font-size:clamp(1.9rem,5vw,2.9rem)}
h2{font-size:clamp(1.45rem,3.4vw,2rem);margin-top:1.8em}
h3{font-size:1.25rem;margin-top:1.5em}
p{margin:0 0 1.1em}
.muted{color:var(--muted)}
.skip-link{position:absolute;left:-999px;top:0;background:var(--acc);color:#04150d;padding:10px 16px;border-radius:0 0 8px 0;z-index:200}
.skip-link:focus{left:0}

/* ---------- Header / Nav ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(11,15,18,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.site-header__inner{display:flex;align-items:center;gap:16px;min-height:62px}
.brand{font-weight:900;font-size:1.16rem;color:var(--ink);letter-spacing:-.02em;white-space:nowrap;font-family:var(--mono)}
.brand b{color:var(--acc)}
.badge-18{font-size:.72rem;font-weight:800;border:1.5px solid var(--acc);color:var(--acc);border-radius:6px;padding:2px 8px;line-height:1.4}
.nav-toggle{margin-left:auto;display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--bg-3);border-radius:8px;cursor:pointer;appearance:none;color:inherit;font:inherit;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);transition:.2s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.site-nav{margin-left:auto;display:flex;align-items:center;gap:4px}
.nav-group{position:relative}
.nav-group>summary{list-style:none;cursor:pointer;padding:9px 13px;border-radius:7px;font-weight:600;color:var(--ink-2);white-space:nowrap}
.nav-group>summary::-webkit-details-marker{display:none}
.nav-group>summary:after{content:"▾";margin-left:6px;font-size:.7em;color:var(--muted)}
.nav-group[open]>summary,.nav-group>summary:hover{background:var(--bg-3);color:var(--ink)}
.nav-sub{display:flex;flex-direction:column;gap:2px;padding:8px}
.nav-sub a{padding:8px 12px;border-radius:7px;color:var(--ink-2);font-size:.96rem}
.nav-sub a:hover{background:var(--bg-3);color:var(--ink);text-decoration:none}
.nav-cta{margin-left:6px}
@media(min-width:901px){
  .nav-group>.nav-sub{position:absolute;top:calc(100% + 6px);left:0;min-width:236px;background:var(--card);border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow);z-index:70}
  .nav-group:not([open])>.nav-sub{display:none}
}
@media(max-width:900px){
  .site-header{backdrop-filter:none;-webkit-backdrop-filter:none}
  .nav-toggle{display:flex}
  .site-nav{position:fixed;inset:62px 0 0 0;background:var(--bg-2);flex-direction:column;align-items:stretch;gap:4px;padding:18px;overflow-y:auto;display:none;z-index:60;border-top:1px solid var(--line)}
  .nav-toggle[aria-expanded="true"] ~ .site-nav{display:flex}
  .nav-group{border:1px solid var(--line);border-radius:10px;background:var(--card-2)}
  .nav-group>summary{padding:14px 16px}
  .nav-sub a{padding:12px 16px;font-size:1rem}
  .nav-cta{margin:6px 0 0;text-align:center}
}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:800;border-radius:9px;padding:14px 26px;cursor:pointer;border:0;transition:transform .12s,box-shadow .2s;text-align:center}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn--cta{background:linear-gradient(135deg,var(--acc),var(--acc-2));color:#04150d;box-shadow:0 10px 26px -8px rgba(25,195,125,.5)}
.btn--ghost{background:var(--bg-3);color:var(--ink);border:1px solid var(--line)}
.btn--sm{padding:9px 16px;font-size:.9rem;border-radius:8px}
.btn--lg{padding:17px 34px;font-size:1.08rem}

/* ---------- Hero ---------- */
.hero{padding:52px 0 28px}
.hero__inner{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.kicker{display:inline-block;font-family:var(--mono);font-size:.76rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--acc);background:rgba(25,195,125,.1);border:1px solid rgba(25,195,125,.3);padding:5px 12px;border-radius:6px;margin-bottom:16px}
.hero h1{margin-bottom:.4em}
.hero .lede{font-size:1.15rem;color:var(--ink-2);max-width:46ch}
.hero__cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:24px}
.hero__card{background:linear-gradient(180deg,var(--card),var(--card-2));border:1px solid var(--line);border-radius:12px;padding:24px;box-shadow:var(--shadow);font-family:var(--mono)}
.freshness{display:inline-flex;align-items:center;gap:8px;font-size:.84rem;font-weight:700;color:var(--acc);background:rgba(25,195,125,.1);border:1px solid rgba(25,195,125,.3);padding:6px 13px;border-radius:6px;margin-bottom:16px;font-family:var(--mono)}
.freshness .dot{width:9px;height:9px;border-radius:50%;background:var(--acc);animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(25,195,125,.5)}70%{box-shadow:0 0 0 9px rgba(25,195,125,0)}100%{box-shadow:0 0 0 0 rgba(25,195,125,0)}}
@media(prefers-reduced-motion:reduce){.freshness .dot{animation:none}}

/* ---------- Stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:8px 0}
.stat{background:var(--card-2);border:1px solid var(--line);border-radius:9px;padding:15px;text-align:center}
.stat b{display:block;font-size:1.5rem;color:var(--acc);font-weight:900;line-height:1.1}
.stat span{font-size:.8rem;color:var(--muted)}
.hero__card .stats{grid-template-columns:1fr 1fr}

/* ---------- Sections / prose ---------- */
.section{padding:30px 0}
.prose{max-width:760px}
.prose.wide{max-width:880px}
.lead{font-size:1.16rem;color:var(--ink-2)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:24px;box-shadow:var(--shadow)}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feature{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.feature h3{margin-top:0;font-size:1.1rem}
.feature .ico{font-size:1.7rem;margin-bottom:8px;display:block}

.checklist{list-style:none;padding:0;margin:0 0 1.2em}
.checklist li{position:relative;padding:7px 0 7px 30px}
.checklist li:before{content:"✓";position:absolute;left:0;top:7px;color:var(--acc);font-weight:900}
.crosslist{list-style:none;padding:0;margin:0 0 1.2em}
.crosslist li{position:relative;padding:7px 0 7px 30px}
.crosslist li:before{content:"✕";position:absolute;left:0;top:7px;color:var(--bad);font-weight:900}

.steps{counter-reset:s;list-style:none;padding:0;margin:1em 0}
.steps>li{counter-increment:s;position:relative;padding:18px 18px 18px 64px;background:var(--card);border:1px solid var(--line);border-radius:10px;margin-bottom:12px}
.steps>li:before{content:counter(s);position:absolute;left:16px;top:16px;width:34px;height:34px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--acc),var(--cyan));color:#04150d;font-weight:900;border-radius:8px;font-family:var(--mono)}
.steps>li h3{margin:0 0 .3em;font-size:1.06rem}
.steps>li p{margin:0;color:var(--ink-2)}

.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);margin:1.2em 0}
table{width:100%;border-collapse:collapse;font-size:.96rem;min-width:520px}
th,td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line)}
thead th{background:var(--bg-3);color:var(--ink);font-weight:800;font-size:.84rem;text-transform:uppercase;letter-spacing:.04em}
tbody tr:last-child td{border-bottom:0}
tbody tr:nth-child(even){background:rgba(255,255,255,.012)}
td .yes{color:var(--acc);font-weight:700}
td .no{color:var(--bad);font-weight:700}

.vs{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:1.2em 0}
.vs__col{border:1px solid var(--line);border-radius:var(--r);padding:20px}
.vs__col--good{background:linear-gradient(180deg,rgba(25,195,125,.07),transparent);border-color:rgba(25,195,125,.35)}
.vs__col--bad{background:linear-gradient(180deg,rgba(255,107,107,.06),transparent)}
.vs__col h4{margin-top:0}

.callout{border-left:4px solid var(--acc);background:var(--bg-3);padding:16px 20px;border-radius:0 10px 10px 0;margin:1.3em 0}
.callout--warn{border-left-color:var(--warn)}
.callout p:last-child{margin-bottom:0}

.chips{display:flex;flex-wrap:wrap;gap:8px;margin:1em 0}
.chip{background:var(--bg-3);border:1px solid var(--line);border-radius:6px;padding:6px 13px;font-size:.84rem;color:var(--ink-2);font-weight:600;font-family:var(--mono)}

.disclosure{display:flex;gap:12px;align-items:flex-start;background:var(--bg-3);border:1px solid var(--line);border-radius:10px;padding:14px 18px;margin:1.4em 0;font-size:.92rem;color:var(--ink-2)}
.disclosure__icon{color:var(--acc);font-size:1.2rem;line-height:1}
.disclosure p{margin:0}

.cta-banner{background:linear-gradient(135deg,var(--bg-3),var(--card));border:1px solid var(--line);border-radius:14px;padding:34px;text-align:center;margin:2em 0;box-shadow:var(--shadow)}
.cta-banner h2{margin-top:0}
.cta-banner .cta-offer{font-size:.86rem;color:var(--muted);max-width:60ch;margin:14px auto 0}

.breadcrumb{padding:18px 0 0}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:0;font-size:.84rem;color:var(--muted)}
.breadcrumb li:not(:last-child):after{content:"/";margin-left:8px;color:var(--line)}
.breadcrumb a{color:var(--ink-2)}

.faq details{border:1px solid var(--line);border-radius:10px;background:var(--card);margin-bottom:12px;overflow:hidden}
.faq summary{cursor:pointer;padding:16px 20px;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";color:var(--acc);font-weight:900;font-size:1.3rem;line-height:1}
.faq details[open] summary:after{content:"–"}
.faq details[open] summary{border-bottom:1px solid var(--line)}
.faq .faq__a{padding:16px 20px;color:var(--ink-2)}
.faq .faq__a p:last-child{margin-bottom:0}

.byline{display:flex;align-items:center;gap:12px;margin:1.4em 0;padding:14px;background:var(--card-2);border:1px solid var(--line);border-radius:10px}
.byline img,.byline .avatar{width:46px;height:46px;border-radius:50%;background:var(--bg-3);flex:none}
.byline b{color:var(--ink)}
.byline span{font-size:.85rem;color:var(--muted)}

.toc{background:var(--card-2);border:1px solid var(--line);border-radius:10px;padding:18px 22px;margin:1.4em 0}
.toc b{display:block;margin-bottom:8px;color:var(--ink)}
.toc ol{margin:0;padding-left:20px;color:var(--ink-2)}
.toc a{color:var(--ink-2)}

/* screenshot figure */
.shot{margin:1.6em 0;display:flex;flex-direction:column;align-items:center;background:var(--card-2);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow)}
.shot img{max-width:100%;max-height:540px;width:auto;height:auto;display:block}
.shot figcaption{width:100%;padding:11px 18px;font-size:.85rem;color:var(--muted);border-top:1px solid var(--line);text-align:center;background:var(--card-2)}

/* status box — central element of this site (mirror status) */
.status-box{display:flex;flex-wrap:wrap;align-items:center;gap:14px;background:linear-gradient(135deg,rgba(25,195,125,.12),transparent);border:1px solid rgba(25,195,125,.45);border-radius:12px;padding:18px 22px;margin:1.2em 0;font-family:var(--mono)}
.status-box .big{font-size:1.05rem;font-weight:800;color:var(--acc)}

.rg-block{background:var(--card-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:2em}
.rg-block__inner{display:flex;gap:16px;align-items:flex-start;padding:22px 0}
.rg-block__badge{flex:none;font-weight:900;color:var(--acc);border:2px solid var(--acc);border-radius:8px;padding:6px 10px}
.rg-block p{margin:0;color:var(--ink-2);font-size:.94rem}

.site-footer{background:var(--card-2);border-top:1px solid var(--line);padding:40px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px}
.site-footer h4{font-size:1rem;margin-bottom:.7em}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:7px}
.site-footer a{color:var(--ink-2);font-size:.94rem}
.footer-legal{border-top:1px solid var(--line);margin-top:28px;padding-top:20px}
.footer-legal p{font-size:.84rem;color:var(--muted)}
.footer-license{color:var(--ink-2)!important}

@media(max-width:900px){
  .hero__inner,.grid-3,.grid-2,.vs,.footer-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr}
  .hero{padding:32px 0 18px}
}
@media(max-width:480px){
  body{font-size:16px}
  .stats{grid-template-columns:1fr 1fr}
  .cta-banner{padding:24px 18px}
}