/* =========================================================
   Islenkov AI — премиальный тёмный дизайн
   Палитра: глубокий чёрный + латунное золото
   ========================================================= */

*{margin:0;padding:0;box-sizing:border-box}

:root{
  --bg:#0A0A0B;
  --bg-elevated:#101013;
  --surface:#141418;
  --surface-2:#1A1A20;
  --surface-hover:#1F1F26;
  --border:rgba(255,255,255,.08);
  --border-strong:rgba(255,255,255,.14);
  --text:#F4F4F6;
  --text-secondary:#A1A1AA;
  --text-muted:#71717A;
  --accent:#C9A961;
  --accent-bright:#E8C778;
  --accent-soft:rgba(201,169,97,.12);
  --accent-line:rgba(201,169,97,.32);
  --accent-dark:#8A7344;
  --dark:#070708;
  --success:#34D399;
  --danger:#F87171;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(0,0,0,.4);
  --shadow-lg:0 24px 48px -12px rgba(0,0,0,.6);
  --shadow-glow:0 0 0 1px var(--accent-line),0 20px 50px -20px rgba(201,169,97,.25);
  --ease:cubic-bezier(.22,1,.36,1);
  --maxw:1180px;
}

html{scroll-behavior:smooth;font-size:16px;-webkit-text-size-adjust:100%}

body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC",sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.65;
  font-feature-settings:"cv11","ss01";
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  letter-spacing:-.01em;
  overflow-x:hidden;
}

/* subtle фоновая сетка для глубины */
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.018) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.018) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
  z-index:0;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 30%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 30%,transparent 75%);
}

a{color:var(--accent);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--accent-bright)}
img{max-width:100%;display:block}
::selection{background:var(--accent);color:#0A0A0B}

/* ---------- Header / glass ---------- */
.header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(10,10,11,.72);
  backdrop-filter:saturate(180%) blur(20px);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease),background .3s var(--ease);
}
.header.scrolled{border-bottom-color:var(--border);background:rgba(10,10,11,.86)}
.header-inner{max-width:var(--maxw);margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:72px;padding:0 24px}
.logo{font-size:1.2rem;font-weight:700;color:var(--text);letter-spacing:-.02em;display:flex;align-items:center;gap:1px}
.logo span{color:var(--accent);font-weight:700;margin-left:5px;position:relative}
.logo span::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;background:linear-gradient(90deg,transparent,var(--accent),transparent);opacity:.7}
.nav{display:flex;gap:34px;align-items:center}
.nav>a{color:var(--text-secondary);font-size:.9rem;font-weight:500;letter-spacing:-.01em;position:relative;padding:6px 0;transition:color .2s var(--ease)}
.nav>a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.nav>a:hover,.nav>a.active{color:var(--text)}
.nav>a:hover::after,.nav>a.active::after{transform:scaleX(1)}
.nav-cta{
  background:linear-gradient(135deg,var(--accent-bright),var(--accent))!important;
  color:#0A0A0B!important;
  padding:10px 22px;border-radius:999px;
  font-weight:600;font-size:.88rem;
  letter-spacing:-.01em;
  box-shadow:0 4px 14px -4px rgba(201,169,97,.5);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-cta::after{display:none}
.nav-cta:hover{color:#0A0A0B!important;transform:translateY(-1px);box-shadow:0 8px 22px -6px rgba(201,169,97,.6)}
.burger{display:none;background:none;border:none;cursor:pointer;padding:10px;flex-direction:column;gap:5px;align-items:flex-end}
.burger span{display:block;width:22px;height:2px;background:var(--text);border-radius:2px;transition:transform .3s var(--ease),opacity .2s var(--ease)}
.burger span:nth-child(2){width:16px}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);width:22px}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:160px 24px 96px;
  text-align:center;
  overflow:hidden;
  isolation:isolate;
}
.hero::before{
  content:"";
  position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(ellipse 50% 40% at 50% -5%,rgba(201,169,97,.22),transparent 70%),
    radial-gradient(ellipse 30% 25% at 85% 10%,rgba(201,169,97,.10),transparent 70%),
    linear-gradient(180deg,#0E0E12 0%,var(--bg) 60%);
}
.hero::after{
  content:"";
  position:absolute;left:50%;top:0;transform:translateX(-50%);
  width:1px;height:120px;
  background:linear-gradient(180deg,transparent,var(--accent-line),transparent);
  z-index:-1;
}
.hero h1{
  font-size:clamp(2.1rem,5.4vw,3.6rem);
  font-weight:700;
  line-height:1.1;
  letter-spacing:-.035em;
  max-width:880px;
  margin:0 auto 22px;
  color:#fff;
}
.hero h1 em{font-style:normal;color:var(--accent);font-weight:700}
.hero p{
  font-size:clamp(1.02rem,1.6vw,1.18rem);
  color:var(--text-secondary);
  max-width:640px;margin:0 auto 38px;line-height:1.7;
}
.hero-buttons{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;border-radius:999px;
  font-size:.98rem;font-weight:600;letter-spacing:-.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .25s var(--ease),background .2s var(--ease),color .2s var(--ease);
  will-change:transform;
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent-bright),var(--accent));
  color:#0A0A0B;
  box-shadow:0 8px 24px -8px rgba(201,169,97,.55),inset 0 1px 0 rgba(255,255,255,.25);
}
.btn-primary:hover{color:#0A0A0B;transform:translateY(-2px);box-shadow:0 14px 32px -10px rgba(201,169,97,.7),inset 0 1px 0 rgba(255,255,255,.3)}
.btn-outline{
  background:rgba(255,255,255,.02);
  color:var(--text);
  border:1px solid var(--border-strong);
}
.btn-outline:hover{color:var(--accent);border-color:var(--accent-line);background:var(--accent-soft);transform:translateY(-2px)}

/* ---------- Sections ---------- */
.section{padding:100px 24px;position:relative}
.section-alt{background:linear-gradient(180deg,var(--bg) 0%,var(--bg-elevated) 50%,var(--bg) 100%)}
.section-dark{
  background:
    radial-gradient(ellipse 40% 50% at 50% 50%,rgba(201,169,97,.08),transparent 70%),
    var(--dark);
  position:relative;
}
.section-dark::after{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--accent-line),transparent);
}
.container{max-width:var(--maxw);margin:0 auto;position:relative;z-index:1}
.section-title{
  font-size:clamp(1.6rem,3.2vw,2.4rem);
  font-weight:700;letter-spacing:-.03em;text-align:center;
  margin-bottom:14px;color:#fff;line-height:1.2;
}
.section-subtitle{
  text-align:center;color:var(--text-secondary);
  max-width:620px;margin:0 auto 56px;font-size:1.02rem;line-height:1.7;
}

/* eyebrow — маленькая надпись над заголовком для премиальности */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.78rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent);
  padding:6px 14px;border-radius:999px;
  border:1px solid var(--accent-line);
  background:var(--accent-soft);
  margin:0 auto 22px;
}
.eyebrow.center{display:flex;width:max-content}
.eyebrow::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent)}

/* ---------- Grid cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:22px}
.card{
  position:relative;
  background:linear-gradient(180deg,var(--surface),var(--bg-elevated));
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:30px;
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
  overflow:hidden;
}
.card::before{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:radial-gradient(280px circle at var(--mx,50%) var(--my,0%),var(--accent-soft),transparent 60%);
  opacity:0;transition:opacity .3s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--accent-line);box-shadow:var(--shadow-lg)}
.card:hover::before{opacity:1}
.card-icon{
  width:46px;height:46px;
  background:var(--accent-soft);
  border:1px solid var(--accent-line);
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-size:1.35rem;margin-bottom:18px;
}
.card h3{font-size:1.08rem;font-weight:600;margin-bottom:9px;color:#fff;letter-spacing:-.02em}
.card p{color:var(--text-secondary);font-size:.94rem;line-height:1.65}

/* ---------- Steps ---------- */
.steps{counter-reset:step;max-width:840px;margin:0 auto}
.step{display:flex;gap:22px;margin-bottom:36px;align-items:flex-start;position:relative}
.step:last-child{margin-bottom:0}
.step-num{
  counter-increment:step;flex-shrink:0;
  width:46px;height:46px;
  background:linear-gradient(135deg,var(--surface-2),var(--bg-elevated));
  border:1px solid var(--accent-line);
  color:var(--accent);
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:1rem;
  box-shadow:0 0 0 4px rgba(201,169,97,.06);
}
.step-num::after{content:counter(step)}
.step:not(:last-child) .step-num::before{
  content:"";position:absolute;left:23px;top:46px;width:1px;height:calc(100% + 6px);
  background:linear-gradient(180deg,var(--accent-line),transparent);
}
.step-content{padding-top:6px}
.step-content h3{font-size:1.05rem;font-weight:600;margin-bottom:6px;color:#fff;letter-spacing:-.02em}
.step-content p{color:var(--text-secondary);font-size:.94rem}

/* ---------- Roadmap — zigzag timeline ---------- */
.roadmap{position:relative;max-width:860px;margin:0 auto;padding:8px 0}
.roadmap-track{position:absolute;left:50%;top:0;bottom:0;width:2px;background:linear-gradient(180deg,transparent,var(--accent-line) 6%,var(--accent-line) 94%,transparent);transform:translateX(-50%)}
.roadmap-stage{display:flex;align-items:flex-start;gap:0;margin-bottom:40px;position:relative}
.roadmap-stage:last-child{margin-bottom:0}
.roadmap-stage.right{flex-direction:row-reverse}
.roadmap-stage.right .roadmap-card{margin-left:0;margin-right:60px;text-align:left}
.roadmap-marker{position:absolute;left:50%;top:6px;transform:translateX(-50%);z-index:2}
.roadmap-marker span{
  display:flex;align-items:center;justify-content:center;
  width:44px;height:44px;
  background:linear-gradient(135deg,var(--accent-dark),var(--accent));
  color:#0A0A0B;font-weight:800;font-size:.82rem;
  border-radius:50%;border:3px solid var(--bg);
  box-shadow:0 0 0 1px var(--accent-line),0 0 24px -4px rgba(201,169,97,.4);
}
.roadmap-card{
  width:calc(50% - 60px);margin-left:60px;
  background:linear-gradient(180deg,var(--surface),var(--bg-elevated));
  border:1px solid var(--border);border-radius:var(--radius);
  padding:22px 24px 20px;transition:border-color .3s var(--ease);
}
.roadmap-card:hover{border-color:var(--accent-line)}
.roadmap-card-head{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.roadmap-icon{font-size:1.3rem;line-height:1;flex-shrink:0}
.roadmap-card-head h3{font-size:1.05rem;font-weight:600;color:#fff;letter-spacing:-.02em;flex:1;margin:0}
.roadmap-time{font-size:.68rem;font-weight:700;color:var(--accent);background:var(--accent-soft);border:1px solid var(--accent-line);padding:2px 9px;border-radius:999px;white-space:nowrap;flex-shrink:0}
.roadmap-desc{color:var(--text-secondary);font-size:.86rem;line-height:1.55;margin:0 0 12px}
.roadmap-acts{margin-bottom:14px}
.roadmap-act{display:flex;align-items:center;gap:8px;font-size:.82rem;color:var(--text-secondary);margin-bottom:5px;line-height:1.4}
.roadmap-check{flex-shrink:0;width:18px;height:18px;background:var(--accent-soft);border:1px solid var(--accent-line);border-radius:5px;display:flex;align-items:center;justify-content:center;font-size:.62rem;font-weight:800;color:var(--accent)}
.roadmap-io{display:flex;align-items:center;gap:10px;padding-top:12px;border-top:1px dashed var(--border)}
.roadmap-io-item{flex:1;min-width:0}
.roadmap-io-label{display:block;font-size:.58rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);margin-bottom:2px}
.roadmap-io-item strong{font-size:.78rem;color:var(--text-secondary);font-weight:600}
.roadmap-io-item.gold strong{color:var(--accent)}
.roadmap-io-arrow{color:var(--text-muted);font-size:.9rem;flex-shrink:0}

/* ---------- Quality gates ---------- */
.quality-gates{max-width:860px;margin:48px auto 0;padding:24px;background:linear-gradient(180deg,var(--surface),var(--bg-elevated));border:1px solid var(--border);border-radius:var(--radius)}
.quality-gates-title{display:block;text-align:center;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--accent);margin-bottom:18px}
.quality-gates-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;position:relative}
.gate{text-align:center;padding:16px 10px;background:var(--surface-2);border:1px solid var(--border);border-radius:10px;position:relative;transition:border-color .3s var(--ease)}
.gate:hover{border-color:var(--accent-line)}
.gate:not(:last-child)::after{content:"→";position:absolute;right:-9px;top:50%;transform:translateY(-50%);font-size:.8rem;color:var(--accent);z-index:2}
.gate-icon{display:block;font-size:1.3rem;margin-bottom:6px}
.gate-name{display:block;font-size:.72rem;font-weight:600;color:var(--text-secondary);line-height:1.4}

/* ---------- Time allocation ring + legend ---------- */
.time-block{display:grid;grid-template-columns:220px 1fr;gap:40px;align-items:center;max-width:760px;margin:48px auto 0}
.time-ring-wrap{display:flex;justify-content:center}
.time-ring{
  width:200px;height:200px;border-radius:50%;position:relative;
  background:conic-gradient(
    var(--accent) 0% var(--p1),
    #A88B4A var(--p1) calc(var(--p1) + var(--p2)),
    #8B7440 calc(var(--p1) + var(--p2)) calc(var(--p1) + var(--p2) + var(--p3)),
    #6B5A35 calc(var(--p1) + var(--p2) + var(--p3)) calc(var(--p1) + var(--p2) + var(--p3) + var(--p4)),
    #4A3E25 calc(var(--p1) + var(--p2) + var(--p3) + var(--p4)) 100%
  );
}
.time-ring::before{content:"";position:absolute;inset:24px;border-radius:50%;background:var(--bg);box-shadow:inset 0 0 20px rgba(0,0,0,.3)}
.time-ring-hole{position:absolute;inset:24px;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;z-index:1}
.time-ring-num{font-size:clamp(1.8rem,4vw,2.4rem);font-weight:700;color:var(--accent);letter-spacing:-.04em;line-height:1;text-shadow:0 0 24px rgba(201,169,97,.3)}
.time-ring-unit{font-size:.78rem;font-weight:600;color:var(--text-secondary);margin-top:2px}
.time-ring-sub{font-size:.62rem;color:var(--text-muted);font-weight:600;text-transform:uppercase;letter-spacing:.06em;margin-top:2px}
.time-legend{display:flex;flex-direction:column;gap:10px}
.time-legend-title{font-size:.74rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--accent);margin-bottom:6px}
.time-legend-row{display:grid;grid-template-columns:auto auto 1fr auto;align-items:center;gap:10px}
.tl-dot{width:12px;height:12px;border-radius:4px;flex-shrink:0}
.tl-name{font-size:.82rem;font-weight:600;color:var(--text-secondary);white-space:nowrap}
.tl-bar{height:8px;background:var(--surface);border:1px solid var(--border);border-radius:999px;overflow:hidden}
.tl-bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--accent-dark),var(--accent));transition:width 1s var(--ease)}
.tl-val{font-size:.82rem;font-weight:700;color:var(--accent);text-align:right;min-width:36px}

/* Funnel summary — KPI карточки */
.funnel-summary{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;max-width:760px;margin:40px auto 0}
.funnel-summary-card{text-align:center;padding:22px 12px 18px;background:linear-gradient(180deg,var(--surface),var(--bg-elevated));border:1px solid var(--accent-line);border-radius:var(--radius);position:relative;overflow:hidden}
.funnel-summary-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,var(--accent),transparent)}
.funnel-summary-num{font-size:clamp(1.5rem,3vw,2rem);font-weight:700;color:var(--accent);letter-spacing:-.04em;line-height:1;text-shadow:0 0 20px rgba(201,169,97,.25)}
.funnel-summary-num span{font-size:.45em;color:var(--text-secondary);font-weight:500}
.funnel-summary-label{margin-top:7px;font-size:.66rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);line-height:1.4}

@media(max-width:860px){
  .roadmap-track{left:22px}
  .roadmap-marker{left:22px}
  .roadmap-stage,.roadmap-stage.right{flex-direction:row}
  .roadmap-stage.right .roadmap-card{margin-right:0;text-align:left}
  .roadmap-card{width:calc(100% - 60px);margin-left:60px}
}
@media(max-width:620px){
  .funnel-summary{grid-template-columns:1fr 1fr;gap:10px}
  .quality-gates-grid{grid-template-columns:1fr 1fr}
  .gate:not(:last-child)::after{display:none}
  .time-block{grid-template-columns:1fr;gap:28px}
  .time-ring{width:170px;height:170px}
}

/* ---------- Autonomy ---------- */
.autonomy{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px}
.autonomy-item{
  position:relative;
  background:linear-gradient(180deg,var(--surface),var(--bg-elevated));
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:30px 24px;text-align:center;
  transition:border-color .3s var(--ease),transform .3s var(--ease);
}
.autonomy-item:hover{border-color:var(--accent-line);transform:translateY(-3px)}
.autonomy-level{
  font-size:2.1rem;font-weight:700;color:var(--accent);
  margin-bottom:6px;letter-spacing:-.04em;line-height:1;
  text-shadow:0 0 30px rgba(201,169,97,.4);
}
.autonomy-item h4{font-weight:600;margin-bottom:8px;color:#fff;letter-spacing:-.02em}
.autonomy-item p{color:var(--text-secondary);font-size:.88rem;line-height:1.6}

/* ---------- Service detail ---------- */
.service-detail{
  background:linear-gradient(180deg,var(--surface),var(--bg-elevated));
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:38px;margin-bottom:22px;
  transition:border-color .3s var(--ease);
  position:relative;overflow:hidden;
}
.service-detail:hover{border-color:var(--accent-line)}
.service-detail::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(180deg,var(--accent),transparent);opacity:.6}
.service-detail h3{font-size:1.35rem;font-weight:600;margin-bottom:12px;color:#fff;letter-spacing:-.025em;padding-left:14px}
.service-detail h4{font-size:.82rem;text-transform:uppercase;letter-spacing:.1em;color:var(--accent);margin:22px 0 10px;font-weight:600}
.service-detail p{color:var(--text-secondary);font-size:.95rem;line-height:1.7}
.service-meta{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0;padding-left:14px}
.service-meta span{
  background:var(--accent-soft);
  border:1px solid var(--accent-line);
  padding:5px 13px;border-radius:999px;
  font-size:.8rem;font-weight:600;color:var(--accent);
  letter-spacing:-.01em;
}
.service-detail ul{list-style:none;padding:0}
.service-detail li{padding:7px 0;padding-left:24px;position:relative;color:var(--text-secondary);font-size:.94rem;line-height:1.6}
.service-detail li::before{content:"";position:absolute;left:4px;top:14px;width:6px;height:6px;border-radius:50%;background:var(--accent)}

/* ---------- Cases ---------- */
.case-card{
  background:linear-gradient(180deg,var(--surface),var(--bg-elevated));
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  transition:border-color .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease);
  display:flex;flex-direction:column;
}
.case-card:hover{border-color:var(--accent-line);transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.case-header{
  background:linear-gradient(135deg,rgba(201,169,97,.14),rgba(201,169,97,.04));
  border-bottom:1px solid var(--accent-line);
  padding:22px 28px;position:relative;
}
.case-header::after{content:"";position:absolute;left:28px;bottom:-1px;width:40px;height:2px;background:var(--accent)}
.case-header h3{font-size:1.12rem;font-weight:600;color:#fff;letter-spacing:-.02em}
.case-body{padding:28px;flex:1}
.case-body h4{font-size:.78rem;text-transform:uppercase;letter-spacing:.12em;color:var(--accent);margin-bottom:8px;margin-top:20px;font-weight:600}
.case-body h4:first-child{margin-top:0}
.case-body p{color:var(--text-secondary);font-size:.92rem;line-height:1.65}
.case-body ul{list-style:none;padding:0}
.case-body li{padding:5px 0;padding-left:18px;position:relative;color:var(--text-secondary);font-size:.92rem;line-height:1.6}
.case-body li::before{content:"";position:absolute;left:2px;top:13px;width:5px;height:5px;border-radius:50%;background:var(--accent)}

/* ---------- Approach ---------- */
.approach-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:20px}
.approach-card{
  background:linear-gradient(180deg,var(--surface),var(--bg-elevated));
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px;
  transition:border-color .3s var(--ease),transform .3s var(--ease);
}
.approach-card:hover{border-color:var(--accent-line);transform:translateY(-3px)}
.approach-card h3{font-size:1.02rem;font-weight:600;margin-bottom:9px;color:#fff;letter-spacing:-.02em;display:flex;align-items:center;gap:10px}
.approach-card p{color:var(--text-secondary);font-size:.92rem;line-height:1.6}

/* ---------- FAQ ---------- */
.faq-item{border-bottom:1px solid var(--border);padding:22px 0}
.faq-item:first-child{border-top:1px solid var(--border)}
.faq-item summary{
  font-weight:500;cursor:pointer;font-size:1.04rem;letter-spacing:-.02em;
  list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;
  color:var(--text);transition:color .2s var(--ease);
}
.faq-item summary:hover{color:var(--accent)}
.faq-item summary::after{
  content:"+";font-size:1.5rem;color:var(--accent);font-weight:300;
  transition:transform .3s var(--ease);flex-shrink:0;line-height:1;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item[open] summary{color:#fff}
.faq-item p{margin-top:14px;color:var(--text-secondary);line-height:1.75;font-size:.96rem}
.faq-item summary::-webkit-details-marker{display:none}

/* ---------- Form ---------- */
.form-section{
  background:linear-gradient(180deg,var(--surface),var(--bg-elevated));
  border:1px solid var(--border-strong);
  border-radius:var(--radius);
  padding:48px;max-width:680px;margin:0 auto;
  position:relative;overflow:hidden;
  box-shadow:0 30px 60px -30px rgba(0,0,0,.7);
}
.form-section::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(ellipse 60% 40% at 50% 0%,var(--accent-soft),transparent 70%);
}
.form-section>h2{text-align:center;margin-bottom:8px;position:relative}
.form-section>p{text-align:center;color:var(--text-secondary);margin-bottom:32px;position:relative}
.form-group{margin-bottom:18px;position:relative}
.form-group label{display:block;font-weight:500;margin-bottom:7px;font-size:.88rem;color:var(--text);letter-spacing:-.01em}
.form-group input,.form-group textarea,.form-group select{
  width:100%;padding:13px 16px;
  background:var(--bg);
  border:1px solid var(--border-strong);
  border-radius:var(--radius-sm);
  font-size:.98rem;font-family:inherit;color:var(--text);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
  letter-spacing:-.01em;
}
.form-group input::placeholder,.form-group textarea::placeholder{color:var(--text-muted)}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{
  outline:none;border-color:var(--accent);
  box-shadow:0 0 0 4px var(--accent-soft);background:var(--bg-elevated);
}
.form-group textarea{resize:vertical;min-height:104px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-submit{text-align:center;margin-top:6px;position:relative}
.form-success,.form-error{display:none;text-align:center;padding:32px;position:relative;border-radius:var(--radius-sm)}
.form-success.show,.form-error.show{display:block}
.form-success h3{color:var(--success);margin-bottom:8px;font-weight:600}
.form-error h3{color:var(--danger);margin-bottom:8px;font-weight:600}
.form-success p,.form-error p{color:var(--text-secondary)}
.hp-field{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}

/* ---------- Footer ---------- */
.footer{
  background:var(--dark);
  border-top:1px solid var(--border);
  color:var(--text-muted);
  padding:64px 24px 28px;
  position:relative;
}
.footer::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,transparent,var(--accent-line),transparent)}
.footer-inner{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px}
.footer-brand h3{color:#fff;font-size:1.15rem;margin-bottom:14px;font-weight:700;letter-spacing:-.02em}
.footer-brand h3 span{color:var(--accent)}
.footer-brand p{font-size:.92rem;line-height:1.7;color:var(--text-secondary);max-width:340px}
.footer-col h4{color:#fff;font-size:.8rem;text-transform:uppercase;letter-spacing:.12em;margin-bottom:16px;font-weight:600}
.footer-col a{display:block;color:var(--text-secondary);font-size:.92rem;padding:6px 0;transition:color .2s var(--ease),padding-left .2s var(--ease)}
.footer-col a:hover{color:var(--accent);text-decoration:none;padding-left:4px}
.footer-bottom{max-width:var(--maxw);margin:40px auto 0;padding-top:24px;border-top:1px solid var(--border);text-align:center;font-size:.84rem;color:var(--text-muted)}

/* ---------- Contacts ---------- */
.contacts-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.contact-card{
  background:linear-gradient(180deg,var(--surface),var(--bg-elevated));
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:30px;
  transition:border-color .3s var(--ease);
}
.contact-card:hover{border-color:var(--accent-line)}
.contact-card h3{margin-bottom:18px;color:#fff;font-size:1.1rem;font-weight:600;letter-spacing:-.02em}
.contact-item{display:flex;gap:14px;align-items:center;padding:12px 0;border-bottom:1px solid var(--border)}
.contact-item:last-child{border-bottom:none}
.contact-icon{
  width:42px;height:42px;
  background:var(--accent-soft);border:1px solid var(--accent-line);
  border-radius:11px;display:flex;align-items:center;justify-content:center;
  font-size:1.15rem;flex-shrink:0;
}
.contact-item strong{display:block;font-size:.78rem;color:var(--text-muted);margin-bottom:3px;font-weight:500;text-transform:uppercase;letter-spacing:.08em}
.contact-item span{font-weight:500;color:var(--text)}

/* ---------- Infographics ---------- */
.stats-strip{display:grid;grid-template-columns:repeat(4,1fr);max-width:var(--maxw);margin:-20px auto 0;padding:0 24px;position:relative;z-index:2}
.stat{text-align:center;padding:34px 14px;position:relative;background:linear-gradient(180deg,var(--surface),var(--bg-elevated));border:1px solid var(--border)}
.stat:first-child{border-radius:var(--radius) 0 0 var(--radius)}
.stat:last-child{border-radius:0 var(--radius) var(--radius) 0}
.stat+.stat{border-left:none}
.stat-num{font-size:clamp(2rem,4vw,2.7rem);font-weight:700;color:var(--accent);letter-spacing:-.04em;line-height:1;text-shadow:0 0 30px rgba(201,169,97,.25)}
.stat-num em{font-style:normal;font-size:.45em;color:var(--text-secondary);font-weight:500;margin-left:3px;letter-spacing:0}
.stat-label{margin-top:10px;font-size:.74rem;font-weight:600;text-transform:uppercase;letter-spacing:.12em;color:var(--text-muted);line-height:1.5}
.bar-chart{max-width:760px;margin:0 auto}
.bar-legend{display:flex;gap:24px;justify-content:center;margin-bottom:28px;flex-wrap:wrap}
.bar-legend span{display:inline-flex;align-items:center;gap:8px;font-size:.82rem;color:var(--text-secondary);font-weight:500}
.bar-legend span::before{content:"";width:14px;height:14px;border-radius:4px}
.bar-legend .lg-before::before{background:var(--surface-2);border:1px solid var(--border-strong)}
.bar-legend .lg-after::before{background:linear-gradient(90deg,var(--accent-dark),var(--accent))}
.bar-row{margin-bottom:22px}
.bar-row-label{font-size:.9rem;color:var(--text);font-weight:500;margin-bottom:8px;display:flex;justify-content:space-between;align-items:baseline;gap:12px}
.bar-row-label .bar-pct{font-size:.78rem;color:var(--accent);font-weight:600;white-space:nowrap}
.bar-track-wrap{display:flex;gap:10px;align-items:center}
.bar-track-label{width:52px;flex-shrink:0;font-size:.74rem;color:var(--text-muted);font-weight:600;text-align:right;text-transform:uppercase;letter-spacing:.05em}
.bar-track{flex:1;height:30px;background:var(--surface);border:1px solid var(--border);border-radius:8px;position:relative;overflow:hidden}
.bar-fill{height:100%;border-radius:7px 0 0 7px;display:flex;align-items:center;justify-content:flex-end;padding-right:10px;font-size:.74rem;font-weight:700;color:#0A0A0B;transition:width 1.2s var(--ease);min-width:28px}
.bar-fill.before{background:var(--surface-2);color:var(--text-secondary);border:1px solid var(--border-strong)}
.bar-fill.after{background:linear-gradient(90deg,var(--accent-dark),var(--accent));box-shadow:0 0 16px -4px rgba(201,169,97,.4)}
.bar-track-stack{display:flex;flex-direction:column;gap:5px;flex:1}
.ring-row{display:flex;gap:32px;justify-content:center;flex-wrap:wrap;margin-top:8px}
.ring-item{text-align:center}
.ring-chart{width:130px;height:130px;border-radius:50%;background:conic-gradient(var(--accent) 0 var(--deg,252deg),var(--surface-2) var(--deg,252deg));display:grid;place-items:center;position:relative;margin:0 auto 14px}
.ring-chart::before{content:"";position:absolute;inset:9px;background:var(--bg-elevated);border-radius:50%}
.ring-chart>strong{position:relative;z-index:1;font-size:1.7rem;font-weight:700;color:var(--accent);letter-spacing:-.03em}
.ring-item p{font-size:.82rem;color:var(--text-secondary);max-width:130px;margin:0 auto;line-height:1.5}
.pipeline{display:flex;align-items:stretch;justify-content:center;gap:0;flex-wrap:nowrap;margin-top:16px}
.pipeline-node{flex:1;max-width:180px;text-align:center;background:linear-gradient(180deg,var(--surface),var(--bg-elevated));border:1px solid var(--border);border-radius:var(--radius-sm);padding:22px 14px;position:relative;transition:border-color .3s var(--ease),transform .3s var(--ease)}
.pipeline-node:hover{border-color:var(--accent-line);transform:translateY(-3px)}
.pipeline-node-icon{width:48px;height:48px;margin:0 auto 12px;background:var(--accent-soft);border:1px solid var(--accent-line);border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.3rem}
.pipeline-node-num{position:absolute;top:-10px;left:50%;transform:translateX(-50%);width:24px;height:24px;border-radius:50%;background:linear-gradient(135deg,var(--accent-bright),var(--accent));color:#0A0A0B;font-size:.74rem;font-weight:700;display:flex;align-items:center;justify-content:center;box-shadow:0 0 0 4px var(--bg)}
.pipeline-node h4{font-size:.92rem;font-weight:600;color:#fff;margin-bottom:5px;letter-spacing:-.02em}
.pipeline-node p{font-size:.78rem;color:var(--text-secondary);line-height:1.5}
.pipeline-arrow{display:flex;align-items:center;justify-content:center;width:36px;flex-shrink:0;color:var(--accent);font-size:1.4rem;font-weight:300}
.pipeline-arrow::before{content:"\2192"}
.price-bars{max-width:720px;margin:0 auto}
.price-bar{margin-bottom:20px}
.price-bar-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:8px;gap:12px}
.price-bar-name{font-size:.94rem;font-weight:600;color:var(--text)}
.price-bar-value{font-size:1rem;font-weight:700;color:var(--accent);white-space:nowrap}
.price-bar-track{height:14px;background:var(--surface);border:1px solid var(--border);border-radius:999px;overflow:hidden;position:relative}
.price-bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--accent-dark),var(--accent-bright));box-shadow:0 0 12px -2px rgba(201,169,97,.35);transition:width 1s var(--ease)}
.price-bar-meta{font-size:.76rem;color:var(--text-muted);margin-top:5px}
.metric-row{margin-bottom:14px}
.metric-row-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:6px;gap:10px}
.metric-row-label{font-size:.84rem;color:var(--text-secondary)}
.metric-row-value{font-size:.86rem;font-weight:700;color:var(--accent)}
.metric-row-track{height:8px;background:var(--surface);border-radius:999px;overflow:hidden}
.metric-row-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--accent-dark),var(--accent));transition:width 1s var(--ease)}
.metric-row-fill.muted{background:var(--surface-hover)}

/* Task flow — мини-схема потока данных внутри карточки */
.task-flow{display:flex;align-items:center;gap:0;margin-top:16px;padding:14px 0 6px;border-top:1px solid var(--border)}
.task-flow-node{flex:1;text-align:center;font-size:.68rem;color:var(--text-muted);font-weight:600;text-transform:uppercase;letter-spacing:.06em;line-height:1.4}
.task-flow-node strong{display:block;font-size:.8rem;color:var(--text);font-weight:600;text-transform:none;letter-spacing:-.01em;margin-bottom:3px}
.task-flow-node .tfn-icon{width:34px;height:34px;margin:0 auto 6px;background:var(--surface-2);border:1px solid var(--border);border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:.95rem}
.task-flow-node.agent .tfn-icon{background:var(--accent-soft);border-color:var(--accent-line)}
.task-flow-node.agent strong{color:var(--accent)}
.task-flow-arrow{flex-shrink:0;color:var(--text-muted);font-size:1rem;padding:0 2px;line-height:1}
.task-flow-arrow::before{content:"\2192"}
.task-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:14px}
.task-tag{font-size:.7rem;font-weight:600;padding:3px 9px;border-radius:999px;background:var(--surface-2);border:1px solid var(--border);color:var(--text-muted);letter-spacing:-.01em}
.task-tag.gold{background:var(--accent-soft);border-color:var(--accent-line);color:var(--accent)}

/* Pipeline enhancement — детали под нодами */
.pipeline-detail{margin-top:16px;padding-top:14px;border-top:1px dashed var(--border);font-size:.72rem;color:var(--text-muted);line-height:1.5}
.pipeline-detail strong{display:block;color:var(--text-secondary);font-size:.66rem;text-transform:uppercase;letter-spacing:.08em;font-weight:600;margin-bottom:5px}
.pipeline-timeline{max-width:900px;margin:36px auto 0;height:6px;background:var(--surface);border-radius:999px;position:relative;overflow:hidden}
.pipeline-timeline::after{content:"";position:absolute;left:0;top:0;height:100%;width:100%;background:linear-gradient(90deg,var(--accent-dark) 0%,var(--accent) 50%,var(--accent-bright) 100%);border-radius:999px;transform-origin:left;opacity:.35}
.pipeline-timeline-marks{display:flex;justify-content:space-between;max-width:900px;margin:10px auto 0;font-size:.68rem;color:var(--text-muted);font-weight:600;text-transform:uppercase;letter-spacing:.06em;padding:0 12px}
.pipeline-timeline-marks span{flex:1;text-align:center}
.pipeline-timeline-marks span:first-child{text-align:left}
.pipeline-timeline-marks span:last-child{text-align:right}

/* Before/After dashboard — аналитический вид */
.ba-dashboard{max-width:820px;margin:0 auto}
.ba-summary{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:32px}
.ba-summary-card{text-align:center;padding:24px 16px;background:linear-gradient(180deg,var(--surface),var(--bg-elevated));border:1px solid var(--accent-line);border-radius:var(--radius);position:relative;overflow:hidden}
.ba-summary-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,var(--accent),transparent)}
.ba-summary-num{font-size:clamp(1.8rem,3.5vw,2.4rem);font-weight:700;color:var(--accent);letter-spacing:-.04em;line-height:1;text-shadow:0 0 24px rgba(201,169,97,.3)}
.ba-summary-num em{font-style:normal;font-size:.5em;color:var(--text-secondary);font-weight:500}
.ba-summary-label{margin-top:8px;font-size:.74rem;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);line-height:1.5}
.ba-row{display:grid;grid-template-columns:48px 1fr auto;gap:16px;align-items:center;padding:18px 0;border-bottom:1px solid var(--border)}
.ba-row:last-child{border-bottom:none}
.ba-row-icon{width:42px;height:42px;background:var(--accent-soft);border:1px solid var(--accent-line);border-radius:11px;display:flex;align-items:center;justify-content:center;font-size:1.1rem;flex-shrink:0}
.ba-row-body{min-width:0}
.ba-row-title{font-size:.92rem;font-weight:600;color:var(--text);margin-bottom:10px}
.ba-bars{display:flex;flex-direction:column;gap:5px}
.ba-bar{height:22px;background:var(--surface);border:1px solid var(--border);border-radius:6px;overflow:hidden;position:relative}
.ba-bar-fill{height:100%;border-radius:5px;display:flex;align-items:center;padding:0 8px;font-size:.68rem;font-weight:700;transition:width 1.2s var(--ease);white-space:nowrap}
.ba-bar-fill.before{background:var(--surface-2);color:var(--text-muted);border:1px solid var(--border)}
.ba-bar-fill.after{background:linear-gradient(90deg,var(--accent-dark),var(--accent));color:#0A0A0B;box-shadow:0 0 12px -3px rgba(201,169,97,.4)}
.ba-delta{text-align:right;flex-shrink:0;min-width:78px}
.ba-delta-num{font-size:1.4rem;font-weight:700;color:var(--accent);letter-spacing:-.03em;line-height:1}
.ba-delta-label{font-size:.66rem;color:var(--text-muted);font-weight:600;text-transform:uppercase;letter-spacing:.06em;margin-top:4px}
@media(max-width:560px){
  .ba-summary{grid-template-columns:1fr}
  .ba-row{grid-template-columns:36px 1fr;gap:12px}
  .ba-delta{grid-column:1/-1;text-align:left;min-width:0;display:flex;align-items:baseline;gap:8px}
  .ba-delta-num{font-size:1.1rem}
  .ba-delta-label{margin-top:0}
  .task-flow{flex-wrap:wrap}
  .task-flow-arrow{display:none}
  .task-flow-node{flex:1 1 30%}
}

@media(max-width:760px){.stats-strip{grid-template-columns:1fr 1fr;gap:0;margin-top:-10px}.stat:first-child{border-radius:var(--radius) 0 0 0}.stat:nth-child(2){border-radius:0 var(--radius) 0 0;border-left:none}.stat:nth-child(3){border-radius:0 0 0 var(--radius);border-top:none}.stat:nth-child(4){border-radius:0 0 var(--radius) 0;border-left:none;border-top:none}}
@media(max-width:900px){.pipeline{flex-direction:column;align-items:stretch;gap:0}.pipeline-node{max-width:none}.pipeline-arrow{transform:rotate(90deg);width:auto;height:32px;margin:-4px 0}}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .footer-inner{grid-template-columns:1fr 1fr;gap:36px}
}
@media(max-width:768px){
  .nav{
    display:none;position:absolute;top:72px;left:0;right:0;
    flex-direction:column;align-items:flex-start;
    background:rgba(10,10,11,.98);
    backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
    padding:20px 24px 28px;gap:4px;
    border-bottom:1px solid var(--border);
    box-shadow:0 24px 48px -12px rgba(0,0,0,.6);
  }
  .nav.open{display:flex}
  .nav>a{width:100%;padding:13px 0;font-size:1rem;border-bottom:1px solid var(--border)}
  .nav>a::after{display:none}
  .nav-cta{margin-top:10px;width:100%;justify-content:center;padding:13px 22px}
  .burger{display:flex}
  .hero{padding:130px 18px 70px}
  .section{padding:64px 18px}
  .section-subtitle{margin-bottom:40px}
  .form-row{grid-template-columns:1fr}
  .contacts-grid{grid-template-columns:1fr;gap:24px}
  .form-section{padding:30px 22px}
  .service-detail,.contact-card,.case-body,.autonomy-item,.approach-card,.card{padding:24px}
  .service-detail h3{font-size:1.2rem}
}
@media(max-width:480px){
  .footer-inner{grid-template-columns:1fr;gap:32px}
  .hero-buttons{flex-direction:column;align-items:stretch}
  .hero-buttons .btn{justify-content:center}
  .btn{padding:13px 24px;font-size:.95rem}
}

/* ---------- Motion safety ---------- */
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}