/* CNCOptim — оформление сайта. Один файл, без внешних зависимостей. */

:root{
  --bg:#0F1113;
  --bg-2:#141719;
  --panel:#1A1E21;
  --panel-2:#212629;
  --line:#2A3034;
  --line-soft:#232A2E;
  --text:#E8EBED;
  --muted:#9AA4AC;
  --muted-2:#6E7A82;
  --accent:#3E9CFF;
  --accent-2:#6BB7FF;
  --accent-dim:rgba(62,156,255,.12);
  --ok:#4ADE80;
  --warn:#FBBF24;
  --err:#FF5C5C;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 10px 40px rgba(0,0,0,.45);
  --maxw:1180px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);font-family:var(--font);
  font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--accent-2)}
h1,h2,h3,h4{line-height:1.2;margin:0 0 .5em;font-weight:700;letter-spacing:-.02em}
h1{font-size:clamp(1.9rem,4.2vw,3.1rem)}
h2{font-size:clamp(1.45rem,2.8vw,2.1rem)}
h3{font-size:1.15rem}
p{margin:0 0 1em}
ul{padding-left:1.15em}
code,kbd{font-family:var(--mono);font-size:.9em;background:var(--panel-2);
  padding:.15em .4em;border-radius:6px;border:1px solid var(--line)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.muted{color:var(--muted)}
.small{font-size:.9rem}
.center{text-align:center}
.nowrap{white-space:nowrap}

/* ---------- шапка ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(15,17,19,.82);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-soft);
}
.site-header .wrap{display:flex;align-items:center;gap:24px;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.15rem;
  color:var(--text);letter-spacing:-.02em}
.logo:hover{color:var(--text)}
.logo-mark{width:28px;height:28px;flex:0 0 28px}
.nav{display:flex;gap:22px;margin-left:auto;align-items:center}
.nav a{color:var(--muted);font-size:.95rem;font-weight:500}
.nav a:hover,.nav a.active{color:var(--text)}
.nav a.btn-primary{color:#06121F}
.nav a.btn-primary:hover{color:#06121F}
.nav-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--line);
  color:var(--text);border-radius:8px;padding:6px 10px;font-size:1.1rem;cursor:pointer}

/* ---------- кнопки ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:12px 22px;border-radius:var(--radius-sm);border:1px solid transparent;
  font-weight:600;font-size:1rem;font-family:inherit;cursor:pointer;
  transition:transform .12s ease,background .15s ease,border-color .15s ease,opacity .15s;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--accent);color:#06121F}
.btn-primary:hover{background:var(--accent-2);color:#06121F}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-lg{padding:15px 30px;font-size:1.05rem}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none}
.btn-sm{padding:8px 14px;font-size:.9rem}

/* ---------- главный экран ---------- */
.hero{padding:72px 0 56px;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:-40% 30% 40% -20%;
  background:radial-gradient(closest-side,rgba(62,156,255,.16),transparent 70%);
  pointer-events:none;
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;
  gap:48px;align-items:center}
.badge{
  display:inline-flex;align-items:center;gap:8px;padding:6px 13px;border-radius:100px;
  background:var(--accent-dim);border:1px solid rgba(62,156,255,.3);
  color:var(--accent-2);font-size:.85rem;font-weight:600;margin-bottom:20px;
}
.badge .dot{width:7px;height:7px;border-radius:50%;background:var(--ok);
  box-shadow:0 0 0 3px rgba(74,222,128,.18)}
.hero p.lead{font-size:1.12rem;color:var(--muted);max-width:36em;margin-bottom:28px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:22px}
.hero-note{font-size:.88rem;color:var(--muted-2)}

/* ---------- счётчик ---------- */
.counter-strip{
  display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line-soft);
  border:1px solid var(--line-soft);border-radius:var(--radius);overflow:hidden;margin-top:34px;
}
.counter-cell{background:var(--panel);padding:20px 18px;text-align:center}
.counter-num{font-size:clamp(1.5rem,3vw,2.1rem);font-weight:800;letter-spacing:-.03em;
  font-variant-numeric:tabular-nums;color:var(--text)}
.counter-num .unit{font-size:.55em;color:var(--muted);font-weight:600;margin-left:4px}
.counter-label{font-size:.83rem;color:var(--muted);margin-top:4px}

/* ---------- карточки/сетки ---------- */
.section{padding:64px 0;border-top:1px solid var(--line-soft)}
.section-head{max-width:44em;margin-bottom:36px}
.section-head p{color:var(--muted);margin:0}
.grid{display:grid;gap:18px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{
  background:var(--panel);border:1px solid var(--line-soft);border-radius:var(--radius);
  padding:24px;transition:border-color .18s ease,transform .18s ease;
}
.card:hover{border-color:var(--line)}
.card h3{margin-bottom:8px}
.card p{color:var(--muted);margin:0;font-size:.95rem}
.card .icon{width:38px;height:38px;border-radius:10px;background:var(--accent-dim);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;color:var(--accent)}

.steps{counter-reset:step;display:grid;gap:16px;grid-template-columns:repeat(4,1fr)}
.step{background:var(--panel);border:1px solid var(--line-soft);border-radius:var(--radius);
  padding:22px;position:relative}
.step::before{
  counter-increment:step;content:counter(step);
  display:flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:9px;background:var(--accent);color:#06121F;
  font-weight:800;font-size:.95rem;margin-bottom:12px;
}
.step h3{font-size:1rem;margin-bottom:6px}
.step p{color:var(--muted);font-size:.9rem;margin:0}

/* ---------- демо-картинка ---------- */
.shot{
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  background:var(--bg-2);box-shadow:var(--shadow);
}
.shot img{width:100%}
.shot figcaption{padding:12px 16px;font-size:.85rem;color:var(--muted-2);
  border-top:1px solid var(--line-soft);background:var(--panel)}

/* ---------- таблица тарифов ---------- */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:stretch}
.plan{background:var(--panel);border:1px solid var(--line-soft);border-radius:var(--radius);
  padding:28px;display:flex;flex-direction:column}
.plan.featured{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent-dim)}
.plan .price{font-size:2.1rem;font-weight:800;letter-spacing:-.03em;margin:10px 0 4px}
.plan .price span{font-size:.95rem;font-weight:500;color:var(--muted)}
.plan ul{list-style:none;padding:0;margin:18px 0 24px;flex:1}
.plan li{padding:7px 0 7px 26px;position:relative;color:var(--muted);font-size:.94rem}
.plan li::before{content:"";position:absolute;left:0;top:15px;width:14px;height:2px;
  background:var(--accent);border-radius:2px}

/* ---------- FAQ ---------- */
details.faq{border:1px solid var(--line-soft);border-radius:var(--radius-sm);
  background:var(--panel);margin-bottom:10px;overflow:hidden}
details.faq summary{padding:16px 20px;cursor:pointer;font-weight:600;list-style:none;
  display:flex;justify-content:space-between;gap:16px;align-items:center}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";color:var(--accent);font-size:1.3rem;flex:0 0 auto}
details.faq[open] summary::after{content:"−"}
details.faq .faq-body{padding:0 20px 18px;color:var(--muted)}
details.faq .faq-body p:last-child{margin-bottom:0}

/* ---------- приложение (загрузка файлов) ---------- */
.app-grid{display:grid;grid-template-columns:340px 1fr;gap:26px;align-items:start}
.panel{background:var(--panel);border:1px solid var(--line-soft);border-radius:var(--radius);
  padding:22px}
.panel h2{font-size:1.1rem;margin-bottom:16px}
.drop{
  border:2px dashed var(--line);border-radius:var(--radius);padding:38px 22px;text-align:center;
  transition:border-color .18s,background .18s;cursor:pointer;background:var(--bg-2);
}
.drop:hover,.drop.over{border-color:var(--accent);background:rgba(62,156,255,.05)}
.drop .big{font-weight:600;margin-bottom:6px}
.drop .small{color:var(--muted-2)}
.file-list{list-style:none;padding:0;margin:16px 0 0}
.file-row{display:flex;align-items:center;gap:12px;padding:11px 14px;background:var(--bg-2);
  border:1px solid var(--line-soft);border-radius:var(--radius-sm);margin-bottom:8px;font-size:.92rem}
.file-row .name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.file-row .size{color:var(--muted-2);font-size:.85rem;font-variant-numeric:tabular-nums}
.file-row .rm{background:none;border:none;color:var(--muted-2);cursor:pointer;font-size:1.1rem;
  padding:0 4px;line-height:1}
.file-row .rm:hover{color:var(--err)}

.opt-row{display:flex;align-items:flex-start;gap:11px;padding:9px 0;
  border-bottom:1px solid var(--line-soft)}
.opt-row:last-child{border-bottom:none}
.opt-row label{flex:1;font-size:.93rem;cursor:pointer}
.opt-row .hint{display:block;color:var(--muted-2);font-size:.82rem;margin-top:2px}
.opt-row input[type=checkbox]{
  appearance:none;width:38px;height:21px;border-radius:100px;background:var(--line);
  position:relative;cursor:pointer;flex:0 0 38px;margin-top:2px;transition:background .18s;
}
.opt-row input[type=checkbox]::after{
  content:"";position:absolute;top:3px;left:3px;width:15px;height:15px;border-radius:50%;
  background:var(--muted);transition:transform .18s,background .18s;
}
.opt-row input[type=checkbox]:checked{background:var(--accent)}
.opt-row input[type=checkbox]:checked::after{transform:translateX(17px);background:#06121F}
.opt-row .lbl{display:inline}
.opt-row.risk .lbl::after{content:"риск";margin-left:8px;font-size:.7rem;padding:1px 7px;
  border-radius:100px;background:rgba(251,191,36,.14);color:var(--warn);
  border:1px solid rgba(251,191,36,.32);vertical-align:middle;white-space:nowrap}
.num-row{display:flex;align-items:center;gap:12px;padding:9px 0}
.num-row label{flex:1;font-size:.93rem}
.num-row input[type=number]{
  width:110px;background:var(--bg-2);border:1px solid var(--line);color:var(--text);
  border-radius:8px;padding:8px 10px;font-family:inherit;font-size:.93rem;
}
.num-row input:focus{outline:none;border-color:var(--accent)}
.adv-toggle{background:none;border:none;color:var(--accent);cursor:pointer;font-size:.9rem;
  padding:10px 0;font-family:inherit}

.result-card{background:var(--panel);border:1px solid var(--line-soft);
  border-radius:var(--radius);overflow:hidden;margin-bottom:20px}
.result-head{display:flex;align-items:center;gap:12px;padding:15px 20px;
  border-bottom:1px solid var(--line-soft);flex-wrap:wrap}
.result-head .title{font-weight:600;flex:1;min-width:180px}
.result-body{padding:18px 20px}
.result-img{width:100%;border-radius:var(--radius-sm);border:1px solid var(--line-soft);
  background:var(--bg-2);cursor:zoom-in}
.metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1px;
  background:var(--line-soft);border:1px solid var(--line-soft);border-radius:var(--radius-sm);
  overflow:hidden;margin-bottom:16px}
.metric{background:var(--bg-2);padding:13px 14px}
.metric .v{font-size:1.28rem;font-weight:700;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.metric .v.good{color:var(--ok)}
.metric .k{font-size:.78rem;color:var(--muted);margin-top:1px}

.status{display:inline-flex;align-items:center;gap:7px;font-size:.85rem;padding:4px 11px;
  border-radius:100px;border:1px solid var(--line);color:var(--muted)}
.status.done{color:var(--ok);border-color:rgba(74,222,128,.35);background:rgba(74,222,128,.08)}
.status.err{color:var(--err);border-color:rgba(255,92,92,.35);background:rgba(255,92,92,.08)}
.status.run{color:var(--accent);border-color:rgba(62,156,255,.35);background:var(--accent-dim)}

.spinner{width:15px;height:15px;border:2px solid var(--line);border-top-color:var(--accent);
  border-radius:50%;animation:spin .7s linear infinite;display:inline-block}
@keyframes spin{to{transform:rotate(360deg)}}

.progress{height:4px;background:var(--line-soft);border-radius:100px;overflow:hidden;margin-top:14px}
.progress i{display:block;height:100%;background:var(--accent);width:0;transition:width .3s ease}

.alert{padding:13px 16px;border-radius:var(--radius-sm);font-size:.92rem;margin-bottom:16px;
  border:1px solid var(--line)}
.alert-err{background:rgba(255,92,92,.08);border-color:rgba(255,92,92,.3);color:#FFB0B0}
.alert-info{background:var(--accent-dim);border-color:rgba(62,156,255,.3);color:var(--accent-2)}
.alert-warn{background:rgba(251,191,36,.08);border-color:rgba(251,191,36,.3);color:#FDE68A}

.empty{text-align:center;padding:60px 24px;color:var(--muted-2)}
.empty svg{margin:0 auto 16px;opacity:.5}

/* модалка просмотра картинки */
.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.9);z-index:100;display:none;
  align-items:center;justify-content:center;padding:24px;cursor:zoom-out}
.lightbox.on{display:flex}
.lightbox img{max-width:100%;max-height:100%;border-radius:8px}

/* ---------- текстовые страницы ---------- */
.prose{max-width:44em}
.prose h2{margin-top:1.8em}
.prose h3{margin-top:1.5em}
.prose ol,.prose ul{color:var(--muted)}
.prose li{margin-bottom:.4em}
.prose table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:.93rem}
.prose th,.prose td{padding:10px 12px;border:1px solid var(--line-soft);text-align:left}
.prose th{background:var(--panel);font-weight:600}
.prose td{color:var(--muted)}
.table-scroll{overflow-x:auto}

/* ---------- подвал ---------- */
.site-footer{border-top:1px solid var(--line-soft);padding:38px 0;margin-top:56px;
  color:var(--muted-2);font-size:.9rem}
.footer-grid{display:flex;gap:40px;flex-wrap:wrap;justify-content:space-between}
.footer-links{display:flex;gap:22px;flex-wrap:wrap}
.footer-links a{color:var(--muted)}
.footer-links a:hover{color:var(--text)}

/* ---------- адаптив ---------- */
@media (max-width:960px){
  .hero-inner{grid-template-columns:1fr;gap:34px}
  .grid-3,.plans{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  .app-grid{grid-template-columns:1fr}
}
@media (max-width:700px){
  .nav{position:absolute;top:64px;left:0;right:0;flex-direction:column;align-items:stretch;
    gap:0;background:var(--panel);border-bottom:1px solid var(--line);display:none;padding:8px 0}
  .nav.open{display:flex}
  .nav a{padding:12px 20px}
  .nav .btn{margin:8px 20px}
  .nav-toggle{display:block}
  .site-header .wrap{position:relative}
  .counter-strip{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .hero{padding:48px 0 40px}
  .section{padding:48px 0}
  /* длинные надписи на кнопках не должны вылезать за экран телефона */
  .btn{white-space:normal;text-align:center}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .plan .btn,.plan button{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
  html{scroll-behavior:auto}
}

/* ---------- статьи ---------- */
.article-head{max-width:44em;margin-bottom:34px}
.article-meta{font-size:.85rem;color:var(--muted-2);margin:10px 0 0;
  display:flex;gap:14px;flex-wrap:wrap}
.article-lead{font-size:1.1rem;color:var(--muted);margin-top:14px}
.crumbs{font-size:.85rem;color:var(--muted-2);margin-bottom:20px}
.crumbs a{color:var(--muted)}
.prose figure{margin:1.6em 0}
.prose figure img{border-radius:var(--radius-sm);border:1px solid var(--line-soft)}
.prose figcaption{font-size:.85rem;color:var(--muted-2);margin-top:8px}
.prose blockquote{margin:1.5em 0;padding:2px 0 2px 18px;border-left:3px solid var(--accent);
  color:var(--muted)}
.prose .calc{background:var(--panel);border:1px solid var(--line-soft);
  border-radius:var(--radius-sm);padding:18px 20px;margin:1.5em 0;font-size:.95rem}
.prose .calc .row{display:flex;justify-content:space-between;gap:16px;
  padding:5px 0;border-bottom:1px solid var(--line-soft)}
.prose .calc .row:last-child{border-bottom:none;padding-top:10px;margin-top:5px;
  border-top:1px solid var(--line);font-weight:600;color:var(--text)}
.prose .calc .row span:last-child{font-variant-numeric:tabular-nums;white-space:nowrap}
.article-list{display:grid;gap:16px;margin-top:26px}
.article-card{background:var(--panel);border:1px solid var(--line-soft);
  border-radius:var(--radius);padding:22px 24px;transition:border-color .18s}
.article-card:hover{border-color:var(--line)}
.article-card h2{font-size:1.2rem;margin-bottom:6px}
.article-card h2 a{color:var(--text)}
.article-card h2 a:hover{color:var(--accent)}
.article-card p{color:var(--muted);margin:0;font-size:.95rem}
.article-next{margin-top:44px;padding-top:24px;border-top:1px solid var(--line-soft)}
.article-cta{background:var(--panel);border:1px solid var(--line-soft);
  border-left:3px solid var(--accent);border-radius:var(--radius-sm);
  padding:20px 22px;margin:2em 0 0}
.article-cta p:last-child{margin-bottom:0}