*{box-sizing:border-box}
:root{
  --bg:#ffffff;
  --wash:#f5f7fc;
  --card:#ffffff;
  --text:#101828;
  --muted:#51607a;
  --line:#e4e9f4;
  --line-strong:#cdd6ea;
  --brand:#4f6ef7;
  --brand-2:#7b6cf6;
  --brand-soft:#eef1fe;
  --ok:#16a34a;
  --radius:14px;
  --gap:clamp(16px,2.2vw,28px);
  --container:min(1120px,92vw);
  --shadow:0 1px 2px rgba(16,24,40,.05),0 10px 28px -12px rgba(16,24,40,.12);
  --shadow-lg:0 2px 4px rgba(16,24,40,.05),0 24px 48px -16px rgba(79,110,247,.18);
  --font:"Segoe UI",system-ui,-apple-system,Roboto,"Noto Sans",Arial,sans-serif;
  --mono:Consolas,ui-monospace,"SF Mono",Menlo,monospace;
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#0c1017;
    --wash:#10151f;
    --card:#141a26;
    --text:#e8ecf5;
    --muted:#a3aec4;
    --line:rgba(255,255,255,.09);
    --line-strong:rgba(255,255,255,.18);
    --brand:#7aa2ff;
    --brand-2:#9b8cff;
    --brand-soft:rgba(122,162,255,.12);
    --ok:#34d399;
    --shadow:0 1px 2px rgba(0,0,0,.4),0 12px 32px -12px rgba(0,0,0,.5);
    --shadow-lg:0 2px 4px rgba(0,0,0,.4),0 28px 56px -16px rgba(0,0,0,.55);
  }
}

html{scroll-behavior:smooth;scroll-padding-top:84px}
html,body{margin:0}
body{
  font-family:var(--font);
  font-size:16.5px;line-height:1.65;
  color:var(--text);background:var(--bg);
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
.container{width:var(--container);margin-inline:auto;padding-inline:clamp(12px,1.4vw,16px)}
.grid{display:grid;gap:calc(var(--gap)*1.4);grid-template-columns:1.1fr .9fr;align-items:center}
.grid-2{display:grid;gap:calc(var(--gap)*1.5);grid-template-columns:1.1fr .9fr;align-items:start}
.section{padding:clamp(64px,9vh,110px) 0}
.section.alt{background:var(--wash);border-block:1px solid var(--line)}
.section.alt + .section.alt{border-top:0}

h1{font-size:clamp(34px,4.8vw,58px);line-height:1.08;letter-spacing:-.025em;font-weight:700;margin:0 0 16px}
h2{font-size:clamp(26px,3.2vw,38px);line-height:1.15;letter-spacing:-.02em;font-weight:700;margin:0 0 14px;position:relative;padding-bottom:14px}
h2::after{content:'';position:absolute;left:0;bottom:0;width:56px;height:4px;border-radius:4px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2))}
h3{margin:0 0 10px;font-size:clamp(17.5px,2vw,20px);font-weight:600;letter-spacing:-.01em}
p{margin:0 0 12px;color:var(--muted)}
strong{color:var(--text)}

.eyebrow{font-family:var(--mono);font-size:13px;letter-spacing:.04em;color:var(--brand);margin:0 0 14px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 85%,transparent);
  backdrop-filter:blur(12px) saturate(140%);border-bottom:1px solid var(--line)}
.site-header .container{display:flex;align-items:center;gap:18px;min-height:70px}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;font-size:19px;letter-spacing:-.01em;margin-right:auto}
.brand img{height:38px !important;width:auto}
.brand-tld{background:linear-gradient(90deg,var(--brand),var(--brand-2));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.lang-switch{display:flex;gap:4px;border:1px solid var(--line);border-radius:999px;padding:3px;background:var(--card)}
.lang-switch a{font-family:var(--mono);font-size:12.5px;font-weight:600;padding:5px 11px;border-radius:999px;color:var(--muted)}
.lang-switch a:hover{color:var(--text)}
.lang-switch a.active{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff}
.nav-toggle{display:none}
.menu{display:flex;gap:clamp(6px,1.6vw,10px);list-style:none;margin:0;padding:0;align-items:center}
.menu a:not(.btn){padding:8px 12px;border-radius:8px;font-weight:500;font-size:15px;color:var(--muted)}
.menu a:not(.btn):hover{color:var(--text);background:var(--wash)}

/* ---------- buttons ---------- */
.btn{display:inline-block;padding:13px 22px;border-radius:10px;font-weight:600;font-size:15.5px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:var(--shadow);
  transition:transform .15s ease,box-shadow .15s ease}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.menu .btn{padding:10px 18px}
.btn-ghost{background:var(--card);border:1px solid var(--line-strong);color:var(--text);box-shadow:none}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}

/* ---------- hero ---------- */
.hero{position:relative;padding:clamp(72px,11vh,130px) 0;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(48vw 34vw at 88% 0%,var(--brand-soft),transparent 68%),
    linear-gradient(180deg,var(--wash),var(--bg) 70%)}
.hero::after{content:'';position:absolute;inset:0;z-index:-1;opacity:.5;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:radial-gradient(60% 60% at 70% 20%,#000 30%,transparent 100%);
  mask-image:radial-gradient(60% 60% at 70% 20%,#000 30%,transparent 100%)}
.hero .card-like{background:transparent;border:0;padding:0}
.hero p{font-size:clamp(17px,1.9vw,19.5px);max-width:56ch}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin:22px 0 0}
.badges{display:flex;gap:10px;flex-wrap:wrap;padding:0;margin:26px 0 0;list-style:none}
.badges li{border:1px solid var(--line);border-radius:999px;padding:7px 13px;font-size:13.5px;
  background:var(--card);color:var(--muted);box-shadow:0 1px 2px rgba(16,24,40,.04)}

/* status panel — signature */
.hero-art{display:flex;justify-content:center}
.panel{width:min(380px,100%);background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-lg);padding:18px 20px 8px;font-size:14.5px}
.panel-head{display:flex;align-items:center;gap:7px;padding-bottom:12px;margin-bottom:6px;border-bottom:1px solid var(--line)}
.panel-head i{width:10px;height:10px;border-radius:50%;background:var(--line-strong)}
.panel-head i:first-child{background:#f87171}.panel-head i:nth-child(2){background:#fbbf24}.panel-head i:nth-child(3){background:#34d399}
.panel-head span{margin-left:auto;font-family:var(--mono);font-size:12px;color:var(--muted)}
.panel-row{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 0;border-bottom:1px dashed var(--line)}
.panel-row>span:first-child{color:var(--muted)}
.panel-val{font-family:var(--mono);font-size:13.5px;font-weight:600;display:flex;align-items:center;gap:7px}
.panel-val.ok{color:var(--ok)}
.dot{width:8px;height:8px;border-radius:50%;background:var(--ok);position:relative}
.dot::after{content:'';position:absolute;inset:-4px;border-radius:50%;border:2px solid var(--ok);opacity:0;animation:ping 2s ease-out infinite}
@keyframes ping{0%{transform:scale(.5);opacity:.7}80%,100%{transform:scale(1.2);opacity:0}}
.panel-pulse{display:block;width:100%;height:40px;color:var(--brand);margin-top:4px;opacity:.9}
.panel-pulse path{stroke-dasharray:600;stroke-dashoffset:600;animation:draw 3.2s ease-out .3s forwards}
@keyframes draw{to{stroke-dashoffset:0}}

/* ---------- cards ---------- */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--gap);margin-top:22px}
.card{padding:26px;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);
  box-shadow:0 1px 2px rgba(16,24,40,.04);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--line-strong)}
.card>img{width:46px;height:46px;padding:10px;border-radius:11px;margin-bottom:14px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2))}
.card ul{margin:0;padding:0;list-style:none}
.card ul li{padding:7px 0 7px 24px;position:relative;color:var(--muted);border-bottom:1px solid var(--line);font-size:15px}
.card ul li:last-child{border-bottom:0}
.card ul li::before{content:'';position:absolute;left:2px;top:15px;width:7px;height:7px;border-radius:2px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2))}

/* ---------- o mne / stats ---------- */
.checklist{padding:0;margin:16px 0 0;list-style:none}
.checklist li{padding:9px 0 9px 30px;position:relative;color:var(--muted)}
.checklist li::before{content:'✓';position:absolute;left:0;top:8px;width:21px;height:21px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand);font-size:12.5px;font-weight:700;display:flex;align-items:center;justify-content:center}
.stat-box{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.stat-box>div{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 14px;text-align:center;box-shadow:0 1px 2px rgba(16,24,40,.04)}
.stat-box p{margin:6px 0 0;font-size:13.5px}
.stat, .stat-box>div>span:nth-child(2){font-size:clamp(28px,4.4vw,42px);font-weight:700;letter-spacing:-.02em;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat{display:inline-block;min-width:2ch;text-align:right}

/* ---------- references ---------- */
.ref-list{list-style:none;padding:0;margin:22px 0 0;display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px}
.ref-list li{display:flex;align-items:center;justify-content:center;padding:20px 16px;
  border:1px solid var(--line);border-radius:12px;background:var(--card);
  filter:grayscale(100%);opacity:.75;transition:filter .2s ease,opacity .2s ease,border-color .2s ease}
.ref-list li:hover{filter:none;opacity:1;border-color:var(--line-strong)}
.ref-list li img{max-height:40px;width:auto}

/* ---------- faq ---------- */
.faq{border:1px solid var(--line);border-radius:12px;margin:12px 0;background:var(--card);overflow:hidden}
.faq>summary{cursor:pointer;font-weight:600;padding:16px 20px;list-style:none;position:relative;padding-right:48px}
.faq>summary::-webkit-details-marker{display:none}
.faq>summary::after{content:'+';position:absolute;right:18px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--brand);transition:transform .2s ease}
.faq[open]>summary::after{transform:translateY(-50%) rotate(45deg)}
.faq>p{padding:0 20px 16px;margin:0}
.faq[open]{border-color:var(--line-strong);box-shadow:var(--shadow)}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--gap);margin-top:10px}
.contact-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px;box-shadow:0 1px 2px rgba(16,24,40,.04)}
.contact-card .ids{font-family:var(--mono);font-size:13.5px}
.contact-link{display:inline-block;font-weight:600;color:var(--brand);padding:3px 0}
.contact-link:hover{text-decoration:underline}
.cta-card{background:linear-gradient(135deg,var(--brand),var(--brand-2));border:0;color:#fff;box-shadow:var(--shadow-lg)}
.cta-card h3{color:#fff}
.cta-card p{color:rgba(255,255,255,.85)}
.cta-card .btn{background:#fff;color:var(--brand)}
.cta-card .btn-ghost{background:transparent;border-color:rgba(255,255,255,.45);color:#fff}
.cta-card .btn-ghost:hover{border-color:#fff;color:#fff}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);padding:28px 0;font-size:14px;color:var(--muted);background:var(--wash)}
.foot-small{font-size:12.5px;opacity:.85}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:900px){
  .grid,.grid-2,.contact-grid{grid-template-columns:1fr}
  .hero-art{order:-1}
  .panel{width:min(340px,100%)}
  .nav-toggle{display:inline-block;background:var(--card);border:1px solid var(--line-strong);
    padding:9px 14px;border-radius:9px;color:var(--text);font:inherit;font-weight:600;cursor:pointer}
  .menu{position:absolute;right:12px;top:74px;background:var(--card);border:1px solid var(--line);
    border-radius:12px;padding:10px;display:none;flex-direction:column;align-items:stretch;
    width:min(240px,90vw);box-shadow:var(--shadow-lg)}
  .menu.open{display:flex}
  .menu a{display:block;text-align:center}
}
@media (max-width:560px){
  .site-header .container{flex-wrap:wrap;padding-block:10px;gap:10px}
  .brand{font-size:17px}
  .lang-switch{order:3}
  .stat-box{grid-template-columns:repeat(3,1fr);gap:8px}
  .stat-box>div{padding:16px 6px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
}

/* ============ BLOG ============ */
.page-hero{padding:clamp(56px,8vh,90px) 0 clamp(28px,4vh,44px);position:relative;overflow:hidden;background:var(--wash);border-bottom:1px solid var(--line)}
.page-hero::after{content:'';position:absolute;inset:0;z-index:0;opacity:.5;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:radial-gradient(70% 80% at 80% 0%,#000 20%,transparent 100%);
  mask-image:radial-gradient(70% 80% at 80% 0%,#000 20%,transparent 100%)}
.page-hero .container{position:relative;z-index:1}
.page-hero h1{font-size:clamp(30px,4vw,46px);margin-bottom:10px}
.page-hero p{font-size:clamp(16px,1.9vw,19px);max-width:60ch;margin:0}

.breadcrumb{font-size:13.5px;color:var(--muted);margin:0 0 16px;display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.breadcrumb a{color:var(--brand)}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb span{opacity:.5}

.post-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--gap);margin-top:8px}
.post-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:0 1px 2px rgba(16,24,40,.04);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--line-strong)}
.post-thumb{height:6px;background:linear-gradient(90deg,var(--brand),var(--brand-2))}
.post-card-body{padding:24px 26px;display:flex;flex-direction:column;flex:1}
.post-card h2{font-size:20px;line-height:1.3;padding:0;margin:12px 0 10px}
.post-card h2::after{display:none}
.post-card p{font-size:15px;flex:1}
.post-meta{display:flex;gap:10px;align-items:center;flex-wrap:wrap;font-size:12.5px;color:var(--muted);font-family:var(--mono)}
.tag{display:inline-block;font-family:var(--mono);font-size:11.5px;font-weight:600;letter-spacing:.03em;
  padding:4px 10px;border-radius:999px;background:var(--brand-soft);color:var(--brand)}
.post-more{margin-top:14px;font-weight:600;color:var(--brand);font-size:14.5px;display:inline-flex;align-items:center;gap:6px}
.post-card:hover .post-more{gap:10px}

/* article body */
.article{max-width:760px;margin-inline:auto}
.article .lede{font-size:clamp(17px,2vw,20px);color:var(--muted);line-height:1.6;margin:0 0 8px}
.article-meta{display:flex;gap:12px;align-items:center;flex-wrap:wrap;font-family:var(--mono);font-size:13px;
  color:var(--muted);padding:16px 0;margin:20px 0 28px;border-block:1px solid var(--line)}
.prose{font-size:17px;line-height:1.75}
.prose>h2{font-size:clamp(23px,2.6vw,30px);margin:44px 0 16px;padding-bottom:12px}
.prose>h3{font-size:clamp(18.5px,2vw,22px);margin:32px 0 12px;font-weight:600}
.prose p{color:var(--text);margin:0 0 18px}
.prose a{color:var(--brand);text-decoration:underline;text-underline-offset:2px}
.prose ul,.prose ol{margin:0 0 18px;padding-left:0;list-style:none}
.prose ul li,.prose ol li{position:relative;padding:6px 0 6px 30px;color:var(--text)}
.prose ul li::before{content:'';position:absolute;left:4px;top:15px;width:7px;height:7px;border-radius:2px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2))}
.prose ol{counter-reset:step}
.prose ol li{counter-increment:step}
.prose ol li::before{content:counter(step);position:absolute;left:0;top:8px;width:22px;height:22px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand);font-family:var(--mono);font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center}
.prose code{font-family:var(--mono);font-size:.88em;background:var(--wash);border:1px solid var(--line);
  padding:2px 6px;border-radius:6px;color:var(--brand)}
.prose pre{background:#0c1017;border:1px solid var(--line-strong);border-radius:12px;padding:18px 20px;
  overflow-x:auto;margin:0 0 20px}
.prose pre code{background:0;border:0;padding:0;color:#c8d3ef;font-size:14px;line-height:1.6}
.prose blockquote{margin:0 0 20px;padding:14px 20px;border-left:3px solid var(--brand);
  background:var(--wash);border-radius:0 8px 8px 0;color:var(--muted)}
.callout{display:flex;gap:14px;padding:18px 20px;margin:0 0 22px;border-radius:12px;
  background:var(--brand-soft);border:1px solid var(--line)}
.callout .ico{flex:0 0 auto;width:26px;height:26px;border-radius:7px;background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:15px}
.callout p{margin:0;font-size:15.5px}
.callout.warn{background:#fff7ed;border-color:#fed7aa}
.callout.warn .ico{background:#f59e0b}
@media (prefers-color-scheme:dark){.callout.warn{background:rgba(245,158,11,.1);border-color:rgba(245,158,11,.3)}}

.toc{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px 22px;margin:0 0 34px}
.toc p{font-family:var(--mono);font-size:12px;letter-spacing:.05em;color:var(--muted);margin:0 0 10px;text-transform:uppercase}
.toc ol{margin:0;padding:0;list-style:none;counter-reset:t}
.toc ol li{counter-increment:t;padding:5px 0 5px 26px;position:relative}
.toc ol li::before{content:counter(t,decimal-leading-zero);position:absolute;left:0;top:5px;
  font-family:var(--mono);font-size:12px;color:var(--brand);font-weight:700}
.toc a{color:var(--text)}
.toc a:hover{color:var(--brand)}

.article-cta{margin:44px 0 0;padding:30px;border-radius:var(--radius);text-align:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:var(--shadow-lg)}
.article-cta h3{color:#fff;margin-bottom:6px}
.article-cta p{color:rgba(255,255,255,.85);margin:0 0 18px}
.article-cta .btn{background:#fff;color:var(--brand)}

.related{margin-top:52px;padding-top:32px;border-top:1px solid var(--line)}
.related h2{font-size:22px}

/* copy-to-clipboard toast for e-mail contact */
.copy-toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);
  background:var(--text);color:var(--bg);padding:12px 20px;border-radius:10px;font-size:14.5px;font-weight:600;
  box-shadow:var(--shadow-lg);opacity:0;pointer-events:none;transition:opacity .25s ease,transform .25s ease;z-index:200}
.copy-toast.show{opacity:1;transform:translate(-50%,0)}