/* ============================================================
   modbus2mqtt.ru — фирменная тёмно-фиолетовая тема с glow
   палитра и приёмы наследуют веб-интерфейс приложения
   ============================================================ */
:root{
  --bg:#120d1f; --bg2:#1a1130;
  --panel:rgba(46,30,78,.55); --panel-solid:#241640;
  --line:rgba(176,136,255,.22);
  --accent:#a855f7; --accent2:#7c5cff; --accent-soft:#c89bff;
  --text:#ece6ff; --muted:#9b8bcb;
  --ok:#43f0c0; --warn:#ffd166; --bad:#ff5d8f;
  --glow:0 0 22px rgba(168,85,247,.5);
  --radius:18px;
  --maxw:1180px;
  font-family:"Segoe UI",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{height:100%;scroll-behavior:smooth;scroll-padding-top:84px}
body{
  background:radial-gradient(1200px 700px at 80% -10%,#3a1d6e33,transparent),
             radial-gradient(900px 600px at -10% 110%,#5b2db433,transparent),
             linear-gradient(160deg,var(--bg),var(--bg2));
  color:var(--text);min-height:100vh;overflow-x:hidden;line-height:1.55;
}
a{color:inherit;text-decoration:none}
code{font-family:ui-monospace,Consolas,"Cascadia Code",monospace}

/* ---------- фоновые орбы и сетка ---------- */
.bg-orbs{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.bg-orbs span{position:absolute;border-radius:50%;filter:blur(90px);opacity:.32;
  animation:float 20s ease-in-out infinite}
.bg-orbs span:nth-child(1){width:440px;height:440px;background:#7c3aed;top:-100px;left:-80px}
.bg-orbs span:nth-child(2){width:360px;height:360px;background:#b026ff;bottom:-80px;right:6%;animation-delay:-6s}
.bg-orbs span:nth-child(3){width:300px;height:300px;background:#4f2bd6;top:38%;right:-90px;animation-delay:-11s}
.bg-orbs span:nth-child(4){width:280px;height:280px;background:#9333ea;top:62%;left:8%;animation-delay:-3s}
@keyframes float{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(46px) scale(1.1)}}
.bg-grid{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.4;
  background-image:linear-gradient(rgba(176,136,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(176,136,255,.05) 1px,transparent 1px);
  background-size:46px 46px;
  mask-image:radial-gradient(900px 600px at 50% 0%,#000,transparent 75%)}

main,header,footer{position:relative;z-index:1}

/* ---------- кнопки ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);
  border-radius:12px;padding:11px 20px;font-size:14px;font-weight:700;cursor:pointer;
  color:var(--text);background:rgba(255,255,255,.06);transition:.22s;white-space:nowrap}
.btn:hover{transform:translateY(-2px);background:rgba(255,255,255,.1)}
.btn.primary{background:linear-gradient(135deg,var(--accent),var(--accent2));border:none;
  box-shadow:0 0 18px rgba(168,85,247,.45)}
.btn.primary:hover{box-shadow:0 0 30px rgba(168,85,247,.75)}
.btn.ghost{background:transparent}
.btn.glow.lg,.btn.lg{padding:15px 28px;font-size:15px;border-radius:14px}
.btn.sm{padding:8px 14px;font-size:13px}

/* ---------- шапка ---------- */
.topbar{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:24px;
  padding:14px 32px;background:rgba(20,13,36,.55);backdrop-filter:blur(16px);
  border-bottom:1px solid transparent;transition:.3s}
.topbar.scrolled{background:rgba(20,13,36,.82);border-bottom-color:var(--line);
  box-shadow:0 10px 40px rgba(0,0,0,.35)}
.brand{display:flex;align-items:center;gap:13px}
.logo{width:44px;height:44px;display:grid;place-items:center;font-size:23px;border-radius:13px;
  background:linear-gradient(135deg,var(--accent),var(--accent2));box-shadow:var(--glow);
  animation:pulse 3s ease-in-out infinite}
.logo.sm{width:38px;height:38px;font-size:20px}
@keyframes pulse{0%,100%{box-shadow:0 0 16px rgba(168,85,247,.45)}50%{box-shadow:0 0 32px rgba(168,85,247,.9)}}
.brand-txt .wordmark{font-size:19px;letter-spacing:.4px;font-weight:800}
.brand-txt .wordmark span{color:var(--accent-soft)}
.brand-txt .wordmark .dom{color:var(--muted);font-weight:600}
.brand-txt p{font-size:11px;color:var(--muted)}
.nav{display:flex;gap:4px;margin-left:auto;background:rgba(255,255,255,.04);
  padding:6px;border-radius:14px;border:1px solid var(--line)}
.nav a{color:var(--muted);padding:9px 16px;border-radius:10px;font-size:14px;font-weight:600;transition:.2s}
.nav a:hover{color:#fff;background:rgba(255,255,255,.07)}
.topbar-actions{display:flex;align-items:center;gap:10px}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.burger span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:.25s}

/* ---------- секции ---------- */
.section{max-width:var(--maxw);margin:0 auto;padding:96px 32px}
.section.alt{position:relative}
.section.alt::before{content:"";position:absolute;inset:0;z-index:-1;
  background:radial-gradient(800px 400px at 50% 0%,rgba(124,92,255,.08),transparent 70%)}
.sec-head{text-align:center;max-width:760px;margin:0 auto 56px}
.kicker{display:inline-block;font-size:12px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent-soft);padding:6px 14px;border:1px solid var(--line);border-radius:30px;
  background:rgba(168,85,247,.08);margin-bottom:18px}
.sec-head h2{font-size:clamp(26px,3.4vw,40px);line-height:1.15;font-weight:800;letter-spacing:-.5px}
.lead{margin-top:16px;color:var(--muted);font-size:17px}

/* ---------- HERO ---------- */
.hero{max-width:var(--maxw);margin:0 auto;padding:70px 32px 40px;position:relative}
.hero-inner{display:flex;flex-direction:column;gap:34px;align-items:stretch;max-width:900px;margin:0 auto}
.badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  color:var(--accent-soft);padding:7px 14px;border:1px solid var(--line);border-radius:30px;
  background:rgba(168,85,247,.08)}
.badge .dot{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 10px var(--ok);
  animation:blink 1.6s infinite}
@keyframes blink{50%{opacity:.35}}
.hero-title{font-size:clamp(38px,5.5vw,68px);line-height:1.04;font-weight:900;letter-spacing:-1.5px;margin:22px 0 18px}
.grad{background:linear-gradient(120deg,#c89bff,#a855f7);-webkit-background-clip:text;background-clip:text;color:transparent}
.grad2{background:linear-gradient(120deg,#7c5cff,#43f0c0);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{color:var(--muted);font-size:18px;max-width:560px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin:30px 0 34px}
.hero-meta{display:flex;gap:30px;flex-wrap:wrap}
.hero-meta div{display:flex;flex-direction:column}
.hero-meta b{font-size:20px;font-weight:800;color:var(--text)}
.hero-meta span{font-size:12px;color:var(--muted)}

/* hero визуализация моста */
.hero-viz{display:flex;flex-direction:column;gap:18px}
.flow{display:flex;align-items:center;justify-content:center;gap:6px}
.node{flex:1;min-width:0;display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center;
  padding:20px 14px;border-radius:var(--radius);border:1px solid var(--line);
  background:var(--panel);backdrop-filter:blur(12px)}
.node-ico{font-size:30px;filter:drop-shadow(0 0 10px rgba(168,85,247,.55))}
.node span{font-weight:700;font-size:14px}
.node small{font-size:11px;color:var(--muted)}
.node-bridge{border-color:rgba(168,85,247,.5);background:linear-gradient(160deg,rgba(124,92,255,.28),rgba(168,85,247,.12))}
.pulse-card{animation:cardglow 3s ease-in-out infinite}
@keyframes cardglow{0%,100%{box-shadow:0 0 20px rgba(168,85,247,.3)}50%{box-shadow:0 0 42px rgba(168,85,247,.7)}}
.wire{width:42px;height:4px;position:relative;flex:none;border-radius:4px;
  background:linear-gradient(90deg,rgba(168,85,247,.15),rgba(168,85,247,.45))}
.wire i{position:absolute;top:50%;width:7px;height:7px;border-radius:50%;background:var(--accent-soft);
  box-shadow:0 0 10px var(--accent);transform:translateY(-50%);
  animation:dataflow 2.2s linear infinite}
.wire-out i{animation-name:dataflow}
.wire i:nth-child(2){animation-delay:.73s}
.wire i:nth-child(3){animation-delay:1.46s}
@keyframes dataflow{0%{left:-8px;opacity:0}15%{opacity:1}85%{opacity:1}100%{left:42px;opacity:0}}
.topic-line{text-align:center;font-size:13px;color:var(--muted);padding:12px;border-radius:12px;
  border:1px dashed var(--line);background:rgba(12,8,22,.4)}
.topic-line code b{color:var(--accent-soft)}

/* быстрая установка в hero */
.quick-install{margin:0;border-radius:14px;border:1px solid var(--line);overflow:hidden;
  background:rgba(12,8,22,.62);backdrop-filter:blur(10px);box-shadow:0 0 30px rgba(124,92,255,.18);width:100%}
.qi-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 14px;
  background:rgba(255,255,255,.04);border-bottom:1px solid var(--line)}
.qi-title{display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:700;color:var(--muted)}
.qi-pill{font-size:11px;font-weight:900;letter-spacing:.06em;color:#fff;padding:3px 9px;border-radius:7px;
  background:linear-gradient(135deg,var(--accent),var(--accent2));box-shadow:0 0 12px rgba(168,85,247,.5)}
.qi-copy{background:none;border:1px solid var(--line);color:var(--accent-soft);font-size:12px;font-weight:700;
  padding:6px 11px;border-radius:9px;cursor:pointer;transition:.2s;white-space:nowrap}
.qi-copy:hover{background:rgba(168,85,247,.14);color:#fff}
.quick-install pre{padding:14px 16px;font-size:12px;line-height:1.7;
  white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word}
.quick-install code{color:#d9ccff}
.quick-install .c{color:var(--muted)}

.scroll-hint{display:grid;place-items:center;margin-top:34px}
.scroll-hint span{width:26px;height:42px;border:2px solid var(--line);border-radius:14px;position:relative}
.scroll-hint span::after{content:"";position:absolute;left:50%;top:8px;width:4px;height:8px;border-radius:3px;
  background:var(--accent-soft);transform:translateX(-50%);animation:scrolldot 1.8s ease-in-out infinite}
@keyframes scrolldot{0%{opacity:0;transform:translate(-50%,0)}40%{opacity:1}100%{opacity:0;transform:translate(-50%,14px)}}

/* ---------- полоса вендоров ---------- */
.strip{max-width:var(--maxw);margin:0 auto;padding:10px 32px 6px;text-align:center}
.strip-cap{font-size:12px;text-transform:uppercase;letter-spacing:.14em;color:var(--muted);margin-bottom:16px}
.vendors{display:flex;flex-wrap:wrap;justify-content:center;gap:14px 34px}
.vendors span{font-size:17px;font-weight:800;color:#b6a4e6;opacity:.7;transition:.25s}
.vendors span:hover{opacity:1;color:#fff;text-shadow:0 0 16px rgba(168,85,247,.6)}
.vendors .v-more{font-style:italic;font-weight:600;color:var(--accent-soft);opacity:.85}

/* ---------- карточки возможностей ---------- */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.card{padding:26px 22px;border-radius:var(--radius);border:1px solid var(--line);
  background:var(--panel);backdrop-filter:blur(12px);transition:.3s;position:relative;overflow:hidden}
.card::after{content:"";position:absolute;inset:0;border-radius:var(--radius);opacity:0;transition:.3s;
  box-shadow:inset 0 0 0 1px rgba(168,85,247,.5),0 0 40px rgba(168,85,247,.25)}
.card:hover{transform:translateY(-6px)}
.card:hover::after{opacity:1}
.card-ico{width:54px;height:54px;display:grid;place-items:center;font-size:26px;border-radius:14px;
  background:linear-gradient(160deg,rgba(168,85,247,.22),rgba(124,92,255,.1));
  border:1px solid var(--line);margin-bottom:16px}
.card h4{font-size:17px;font-weight:800;margin-bottom:9px}
.card p{font-size:14px;color:var(--muted)}
.card code{color:var(--accent-soft);background:rgba(255,255,255,.07);padding:1px 5px;border-radius:5px;font-size:12.5px}

/* ---------- шаги ---------- */
.steps{display:flex;align-items:stretch;justify-content:center;gap:14px;flex-wrap:wrap}
.step{flex:1;min-width:240px;max-width:340px;padding:30px 26px;border-radius:var(--radius);
  border:1px solid var(--line);background:var(--panel);backdrop-filter:blur(12px);transition:.3s}
.step:hover{transform:translateY(-5px);box-shadow:0 0 36px rgba(168,85,247,.25)}
.step-no{width:46px;height:46px;display:grid;place-items:center;font-size:20px;font-weight:900;border-radius:50%;
  background:linear-gradient(135deg,var(--accent),var(--accent2));box-shadow:var(--glow);margin-bottom:16px}
.step h4{font-size:18px;font-weight:800;margin-bottom:10px}
.step p{font-size:14px;color:var(--muted)}
.step-arrow{align-self:center;font-size:30px;color:var(--accent-soft);opacity:.55}

/* ---------- браузерная рамка (общая) ---------- */
.mock-bar{display:flex;align-items:center;gap:8px;padding:11px 16px;background:rgba(12,8,22,.7);border-bottom:1px solid var(--line)}
.mock-dot{width:11px;height:11px;border-radius:50%;background:#ff5d8f}
.mock-dot:nth-child(2){background:#ffd166}.mock-dot:nth-child(3){background:#43f0c0}
.mock-url{margin-left:14px;font-size:12px;color:var(--muted);background:rgba(255,255,255,.05);
  padding:5px 14px;border-radius:8px;font-family:ui-monospace,monospace}

/* ---------- главный скриншот ---------- */
.shot-hero{max-width:920px;margin:0 auto 28px;border-radius:18px;overflow:hidden;border:1px solid var(--line);
  background:rgba(20,13,36,.7);backdrop-filter:blur(14px);cursor:zoom-in;position:relative;transition:.35s;
  box-shadow:0 30px 80px rgba(0,0,0,.5),0 0 60px rgba(124,92,255,.2)}
.shot-hero:hover{transform:translateY(-4px);box-shadow:0 40px 100px rgba(0,0,0,.55),0 0 80px rgba(124,92,255,.35)}
.shot-hero img{display:block;width:100%;height:auto}
.shot-hero figcaption{position:absolute;left:0;right:0;bottom:0;padding:30px 18px 14px;font-size:13px;font-weight:700;
  color:#fff;background:linear-gradient(0deg,rgba(12,8,22,.85),transparent)}

.shot-more{text-align:center;margin-top:22px;font-size:14px;color:var(--muted)}
.shot-more a{color:var(--accent-soft);font-weight:700;border-bottom:1px solid rgba(200,155,255,.4)}
.shot-more a:hover{color:#fff}

/* ---------- галерея ---------- */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.shot{margin:0;border-radius:16px;overflow:hidden;border:1px solid var(--line);background:var(--panel);
  cursor:zoom-in;transition:.3s;position:relative}
.shot img{display:block;width:100%;height:170px;object-fit:cover;object-position:top;transition:.4s}
.shot:hover{transform:translateY(-5px);border-color:rgba(168,85,247,.55);box-shadow:0 0 36px rgba(168,85,247,.3)}
.shot:hover img{transform:scale(1.04)}
.shot figcaption{display:flex;flex-direction:column;gap:2px;padding:13px 16px;border-top:1px solid var(--line)}
.shot figcaption b{font-size:14.5px;font-weight:800}
.shot figcaption span{font-size:12px;color:var(--muted)}
.shot::after{content:"⤢";position:absolute;top:10px;right:12px;width:30px;height:30px;display:grid;place-items:center;
  border-radius:9px;background:rgba(12,8,22,.6);backdrop-filter:blur(6px);color:var(--accent-soft);font-size:15px;
  opacity:0;transform:scale(.8);transition:.25s}
.shot:hover::after{opacity:1;transform:scale(1)}

/* ---------- lightbox ---------- */
.lightbox{position:fixed;inset:0;z-index:200;display:flex;align-items:center;justify-content:center;
  padding:40px;background:rgba(8,5,16,.86);backdrop-filter:blur(10px);
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s}
.lightbox.open{opacity:1;visibility:visible}
.lb-stage{margin:0;max-width:min(1200px,94vw);max-height:88vh;display:flex;flex-direction:column;
  align-items:center;gap:14px;transform:scale(.96);transition:transform .3s ease}
.lightbox.open .lb-stage{transform:scale(1)}
.lb-stage img{max-width:100%;max-height:80vh;border-radius:14px;border:1px solid var(--line);
  box-shadow:0 30px 90px rgba(0,0,0,.6),0 0 70px rgba(124,92,255,.3)}
.lb-stage figcaption{font-size:14px;font-weight:600;color:var(--text);text-align:center}
.lb-close,.lb-nav{position:absolute;background:rgba(36,22,64,.7);border:1px solid var(--line);color:#fff;
  cursor:pointer;border-radius:50%;display:grid;place-items:center;transition:.2s;backdrop-filter:blur(8px)}
.lb-close:hover,.lb-nav:hover{background:linear-gradient(135deg,var(--accent),var(--accent2));box-shadow:var(--glow)}
.lb-close{top:22px;right:26px;width:46px;height:46px;font-size:20px}
.lb-nav{top:50%;transform:translateY(-50%);width:54px;height:54px;font-size:30px;line-height:1}
.lb-prev{left:24px}.lb-next{right:24px}

/* ---------- библиотека ---------- */
.lib-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.lib{padding:22px 20px;border-radius:var(--radius);border:1px solid var(--line);
  background:var(--panel);backdrop-filter:blur(12px);transition:.3s;display:flex;flex-direction:column;gap:6px}
.lib:hover{transform:translateY(-5px);border-color:rgba(168,85,247,.5);box-shadow:0 0 30px rgba(168,85,247,.22)}
.lib-tag{align-self:flex-start;font-size:11px;font-weight:800;letter-spacing:.05em;text-transform:uppercase;
  color:var(--accent-soft);padding:4px 10px;border-radius:20px;background:rgba(168,85,247,.12);margin-bottom:6px}
.lib b{font-size:15px;font-weight:800}
.lib small{font-size:12.5px;color:var(--muted)}
.lib-note{max-width:820px;margin:30px auto 0;text-align:center;font-size:15px;line-height:1.7;color:var(--muted);
  padding:20px 26px;border-radius:16px;border:1px dashed var(--line);background:rgba(168,85,247,.06)}
.lib-note b{color:var(--accent-soft)}
.lib-note a{display:inline-block;margin-top:6px;color:var(--accent-soft);font-weight:700;
  border-bottom:1px solid rgba(200,155,255,.4)}
.lib-note a:hover{color:#fff}

/* ---------- скачать ---------- */
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;max-width:880px;margin:0 auto 30px}
.dl{padding:28px 24px;border-radius:var(--radius);border:1px solid var(--line);background:var(--panel);
  backdrop-filter:blur(12px);transition:.3s;text-align:center;display:flex;flex-direction:column;align-items:center;gap:8px}
.dl:hover{transform:translateY(-6px);border-color:rgba(168,85,247,.55);box-shadow:0 0 40px rgba(168,85,247,.3)}
.dl-arch{font-size:24px;font-weight:900;letter-spacing:-.5px;color:var(--text)}
.dl-desc{font-size:13px;color:var(--muted)}
.dl-go{margin-top:10px;display:inline-flex;padding:9px 20px;border-radius:11px;font-weight:800;font-size:14px;
  background:linear-gradient(135deg,var(--accent),var(--accent2));box-shadow:0 0 16px rgba(168,85,247,.45)}
.install{max-width:none;margin:0 auto;border-radius:var(--radius);border:1px solid var(--line);
  background:rgba(12,8,22,.6);overflow:hidden}
.install-head{padding:12px 18px;font-size:13px;font-weight:700;color:var(--muted);
  border-bottom:1px solid var(--line);background:rgba(255,255,255,.03)}
.install pre{padding:20px;font-size:13.5px;line-height:1.7;
  white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word}
.install code{color:var(--text)}
.install .c{color:var(--muted)}
.install .btn,.install .copyBtn{margin:0 18px 18px}
.install.recommended{border-color:rgba(168,85,247,.5);box-shadow:0 0 40px rgba(168,85,247,.22)}
.rec-badge{display:inline-block;font-size:11px;font-weight:900;letter-spacing:.05em;color:#fff;
  padding:3px 10px;border-radius:7px;margin-right:8px;
  background:linear-gradient(135deg,var(--accent),var(--accent2));box-shadow:0 0 12px rgba(168,85,247,.5)}
.copyBtn{background:none;border:1px solid var(--line);color:var(--accent-soft);font-size:13px;font-weight:700;
  padding:8px 14px;border-radius:10px;cursor:pointer;transition:.2s}
.copyBtn:hover{background:rgba(168,85,247,.14);color:#fff}
.upd-note{max-width:none;margin:16px auto 30px;padding:14px 18px;border-radius:12px;font-size:13.5px;color:var(--muted);
  border:1px dashed var(--line);background:rgba(12,8,22,.35)}
.upd-note b{color:var(--text)}
.upd-note code{display:inline-block;margin:2px 0;color:var(--accent-soft);background:rgba(255,255,255,.07);
  padding:2px 7px;border-radius:6px;font-size:12.5px}
.dl-cap{text-align:center;color:var(--muted);font-size:14px;margin:14px auto 22px;max-width:620px}
.dl-cap b{color:var(--text)}
.dl-cap code{color:var(--accent-soft);background:rgba(255,255,255,.07);padding:2px 7px;border-radius:6px;font-size:12.5px}

/* ---------- FAQ ---------- */
.faq-list{max-width:780px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq{border:1px solid var(--line);border-radius:14px;background:var(--panel);backdrop-filter:blur(10px);
  padding:4px 20px;transition:.25s}
.faq[open]{border-color:rgba(168,85,247,.45);box-shadow:0 0 26px rgba(168,85,247,.18)}
.faq summary{list-style:none;cursor:pointer;padding:16px 0;font-weight:700;font-size:16px;
  display:flex;align-items:center;justify-content:space-between;gap:14px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:22px;color:var(--accent-soft);transition:.25s;flex:none}
.faq[open] summary::after{transform:rotate(45deg)}
.faq p{padding:0 0 18px;color:var(--muted);font-size:14.5px}
.faq code{color:var(--accent-soft);background:rgba(255,255,255,.07);padding:1px 5px;border-radius:5px;font-size:12.5px}

/* ---------- о нас ---------- */
.about-card{max-width:780px;margin:0 auto;text-align:center;padding:44px 38px;border-radius:24px;
  border:1px solid var(--line);background:var(--panel);backdrop-filter:blur(14px);position:relative;overflow:hidden;
  box-shadow:0 0 50px rgba(124,92,255,.16)}
.about-card::before{content:"";position:absolute;inset:0;z-index:-1;
  background:radial-gradient(600px 240px at 50% -10%,rgba(124,92,255,.16),transparent 70%)}
.about-ico{width:64px;height:64px;margin:0 auto 20px;display:grid;place-items:center;font-size:30px;border-radius:18px;
  background:linear-gradient(160deg,rgba(168,85,247,.25),rgba(124,92,255,.12));border:1px solid var(--line);
  box-shadow:var(--glow)}
.about-card p{font-size:17px;line-height:1.7;color:var(--text)}
.about-card p b{color:var(--accent-soft)}

/* ---------- статья / база знаний ---------- */
.longread{max-width:840px;margin:0 auto;border-radius:var(--radius);border:1px solid var(--line);
  background:var(--panel);backdrop-filter:blur(12px);padding:38px 44px;box-shadow:0 0 50px rgba(124,92,255,.12)}
.longread h3{font-size:21px;font-weight:800;margin:30px 0 12px;color:var(--text);
  padding-left:14px;border-left:3px solid var(--accent)}
.longread h3:first-child{margin-top:0}
.longread p{color:#cfc3ee;font-size:15.5px;line-height:1.8;margin-bottom:14px}
.longread p b{color:var(--accent-soft)}
.longread ul{margin:0 0 14px;padding-left:22px;color:#cfc3ee;font-size:15.5px;line-height:1.8}
.longread li{margin-bottom:6px}
.longread code{color:var(--accent-soft);background:rgba(255,255,255,.07);padding:1px 6px;border-radius:5px;font-size:13.5px}
.longread .lr-cta{margin-top:26px;padding-top:22px;border-top:1px solid var(--line);font-size:15px}
.longread .lr-cta a{color:var(--accent-soft);font-weight:700;border-bottom:1px solid rgba(200,155,255,.4)}
.longread .lr-cta a:hover{color:#fff}
@media (max-width:760px){.longread{padding:26px 22px}}

/* ---------- запрос на добавление устройства ---------- */
.add-dev{max-width:780px;margin:0 auto;text-align:center;padding:48px 36px;border-radius:24px;
  border:1px solid var(--line);background:var(--panel);backdrop-filter:blur(14px);position:relative;overflow:hidden;
  box-shadow:0 0 50px rgba(124,92,255,.18)}
.add-dev::before{content:"";position:absolute;inset:0;z-index:-1;
  background:radial-gradient(600px 260px at 50% -10%,rgba(168,85,247,.16),transparent 70%)}
.add-ico{width:64px;height:64px;margin:0 auto 18px;display:grid;place-items:center;font-size:30px;border-radius:18px;
  background:linear-gradient(160deg,rgba(168,85,247,.25),rgba(124,92,255,.12));border:1px solid var(--line);
  box-shadow:var(--glow);animation:pulse 3s ease-in-out infinite}
.add-dev h2{font-size:clamp(23px,3vw,32px);font-weight:900;letter-spacing:-.4px}
.add-dev p{color:var(--muted);font-size:16px;margin:14px auto 26px;max-width:600px}
.add-dev p b{color:var(--accent-soft)}
.add-actions{display:flex;flex-direction:column;align-items:center;gap:14px}
.add-mail{font-size:14px;color:var(--muted)}
.add-mail a{color:var(--accent-soft);font-weight:700;border-bottom:1px solid rgba(200,155,255,.4)}
.add-mail a:hover{color:#fff}

/* ---------- финальный CTA ---------- */
.cta-final{max-width:880px;margin:30px auto 80px;text-align:center;padding:64px 32px;border-radius:26px;
  border:1px solid rgba(168,85,247,.4);position:relative;overflow:hidden;
  background:radial-gradient(700px 300px at 50% 0%,rgba(168,85,247,.22),transparent 70%),var(--panel);
  backdrop-filter:blur(14px);box-shadow:0 0 60px rgba(124,92,255,.25)}
.cta-final h2{font-size:clamp(26px,3.4vw,38px);font-weight:900;letter-spacing:-.5px}
.cta-final p{color:var(--muted);font-size:17px;margin:14px 0 28px}

/* ---------- подвал ---------- */
.footer{border-top:1px solid var(--line);background:rgba(20,13,36,.5);backdrop-filter:blur(14px);margin-top:40px}
.footer-in{max-width:var(--maxw);margin:0 auto;padding:36px 32px;display:flex;align-items:center;
  gap:26px;flex-wrap:wrap;justify-content:space-between}
.foot-nav{display:flex;gap:8px;flex-wrap:wrap}
.foot-nav a{color:var(--muted);font-size:14px;font-weight:600;padding:8px 12px;border-radius:9px;transition:.2s}
.foot-nav a:hover{color:#fff;background:rgba(255,255,255,.06)}
.copy{width:100%;text-align:center;font-size:12.5px;color:var(--muted);padding-top:18px;border-top:1px solid var(--line)}

/* ---------- анимация появления при скролле ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
.cards .reveal.in,.lib-grid .reveal.in,.dl-grid .reveal.in{transition-delay:var(--d,0ms)}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
}

/* ---------- адаптив ---------- */
@media (max-width:980px){
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .cards{grid-template-columns:repeat(2,1fr)}
  .lib-grid{grid-template-columns:repeat(2,1fr)}
  .gallery{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:760px){
  .nav{display:none;position:absolute;top:70px;right:16px;left:16px;flex-direction:column;
    background:rgba(20,13,36,.96);backdrop-filter:blur(18px);padding:12px;box-shadow:0 20px 50px rgba(0,0,0,.5)}
  .nav.open{display:flex}
  .nav a{padding:13px 16px}
  .burger{display:flex}
  .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)}
  .section{padding:64px 20px}
  .hero{padding:40px 20px 20px}
  .dl-grid,.cards,.lib-grid,.gallery{grid-template-columns:1fr}
  .step-arrow{transform:rotate(90deg)}
  .footer-in{flex-direction:column;text-align:center}
  .lightbox{padding:16px}
  .lb-close{top:12px;right:14px;width:40px;height:40px}
  .lb-nav{width:42px;height:42px;font-size:24px}
  .lb-prev{left:8px}.lb-next{right:8px}
}