/* TeleRanks — Telegram growth + SEO panel
   Palette: Blue Accent Minimal
     #EFF6FF  #BFDBFE  #60A5FA  #1E40AF  #1E3A5F
   Body class: tr. Solid fills + soft elevation only. */
:root{
  --tr-ice:#EFF6FF;
  --tr-sky:#BFDBFE;
  --tr-mid:#60A5FA;
  --tr-blue:#1E40AF;
  --tr-navy:#1E3A5F;

  --bg:#EFF6FF; --surface:#ffffff; --elevated:#ffffff; --inset:#BFDBFE;
  --border:#BFDBFE; --border2:#60A5FA;
  --txt:#1E3A5F; --muted:#3d5278; --faint:#6b7f9e;
  --accent:#1E40AF; --accent2:#60A5FA; --violet:#1E40AF; --cyan:#60A5FA;
  --btn-bg:#1E40AF; --btn-fg:#ffffff;
  --btn2-bg:#ffffff; --btn2-fg:#1E3A5F;
  --ok:#10b981; --ring:0 1px 2px rgba(30,58,95,.06);
  --shadow:0 8px 28px rgba(30,58,95,.08);
  --radius:14px; --r-sm:10px; --r-pill:999px; --maxw:1600px;
  --sans:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --display:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
}
[data-theme="dark"]{
  --bg:#0c1424; --surface:#121c30; --elevated:#172338; --inset:#1a2940;
  --border:rgba(191,219,254,.14); --border2:rgba(96,165,250,.28);
  --txt:#EFF6FF; --muted:#BFDBFE; --faint:#8fb0d6;
  --accent:#60A5FA; --accent2:#BFDBFE; --violet:#60A5FA; --cyan:#BFDBFE;
  --btn-bg:#1E40AF; --btn-fg:#ffffff;
  --btn2-bg:transparent; --btn2-fg:#EFF6FF;
  --ring:0 0 0 1px rgba(96,165,250,.12);
  --shadow:0 12px 36px rgba(0,0,0,.4);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body.tr{
  background:var(--bg);color:var(--txt);font-family:var(--sans);
  line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden}
:where(.tr) a{color:inherit;text-decoration:none}
.tr img{max-width:100%;display:block}
.tr-wrap{max-width:var(--maxw);margin:0 auto;padding:0 clamp(16px,2.5vw,36px);width:100%;box-sizing:border-box}
.tr-accent{color:var(--accent)}
.tr-cyan{color:var(--cyan)}

/* buttons */
.tr-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.45em;
  padding:11px 18px;border-radius:var(--r-sm);font-weight:650;font-size:14.5px;
  background:var(--btn-bg);color:var(--btn-fg);border:1px solid var(--btn-bg);
  cursor:pointer;transition:opacity .15s,transform .15s;white-space:nowrap}
.tr-btn:hover{opacity:.92}
.tr-btn-lg{padding:13px 22px;font-size:15px}
.tr-btn-sm{padding:8px 14px;font-size:13.5px}
.tr-ghost{background:var(--btn2-bg);color:var(--btn2-fg);border:1px solid var(--border2)}
.tr-ghost:hover{opacity:1;background:var(--inset)}

/* brand */
.tr-brand{display:inline-flex;align-items:center;gap:10px}
.tr-brand-mark{
  width:34px;height:34px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--tr-blue,#1E40AF);flex:none}
.tr-brand-name{font-weight:750;font-size:18px;letter-spacing:.06em;text-transform:uppercase}
.tr-brand-lg .tr-brand-mark{width:40px;height:40px}
.tr-brand-lg .tr-brand-name{font-size:20px}

/* header */
.tr-bar{
  position:sticky;top:0;z-index:60;
  background:color-mix(in srgb,var(--bg) 88%,transparent);
  backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
.tr-bar-inner{
  max-width:var(--maxw);margin:0 auto;padding:0 clamp(16px,2.5vw,36px);
  min-height:58px;display:flex;align-items:center;gap:16px}
.tr-nav{margin-left:auto;display:flex;align-items:center;gap:4px}
.tr-nav-link{
  padding:8px 12px;border-radius:999px;color:var(--muted);font-size:14px;font-weight:550}
.tr-nav-link:hover{color:var(--txt);background:var(--inset)}
.tr-nav-signin{padding:8px 12px;color:var(--txt);font-weight:600;font-size:14px}
.tr-theme{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--border);
  background:var(--surface);color:var(--txt);display:inline-flex;align-items:center;justify-content:center;cursor:pointer}
.tr-theme svg{width:16px;height:16px}
[data-theme="light"] .tr-theme .sun,[data-theme="dark"] .tr-theme .moon{display:none}
.tr-burger{
  display:none;margin-left:auto;width:40px;height:40px;border:1px solid var(--border);
  border-radius:10px;background:var(--surface);flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer}
.tr-burger span{display:block;width:16px;height:1.5px;background:var(--txt);border-radius:2px}

/* hero */
.tr-hero{padding:clamp(36px,6vw,64px) 0 clamp(28px,4vw,40px);position:relative}
.tr-hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(24px,4vw,48px);align-items:center}
.tr-eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:999px;
  border:1px solid color-mix(in srgb,var(--accent) 30%,var(--border));
  background:color-mix(in srgb,var(--accent) 8%,transparent);
  color:var(--accent);font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;margin:0 0 14px}
.tr-hero h1{
  font-family:var(--display);font-size:clamp(34px,5.2vw,54px);line-height:1.05;
  letter-spacing:-.035em;font-weight:800;margin:0 0 14px;max-width:14ch}
.tr-hero h1 em{font-style:normal;color:var(--accent)}
.tr-lede{font-size:clamp(15.5px,1.8vw,18px);color:var(--muted);line-height:1.65;margin:0 0 22px;max-width:42ch}
.tr-hero-cta{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.tr-pills{display:flex;flex-wrap:wrap;gap:8px}
.tr-pill{
  display:inline-flex;padding:7px 12px;border-radius:999px;font-size:12.5px;font-weight:600;
  border:1px solid var(--border);background:var(--surface);color:var(--muted)}
.tr-pill b{color:var(--txt);font-weight:700;margin-right:4px}

/* login card in hero */
.tr-login{
  background:var(--elevated);border:1px solid var(--border);border-radius:18px;
  box-shadow:var(--shadow);padding:22px 22px 20px}
.tr-login h2{margin:0 0 4px;font-size:20px;font-weight:750;letter-spacing:-.02em}
.tr-login-sub{margin:0 0 16px;color:var(--muted);font-size:13.5px}
.tr-field{display:flex;flex-direction:column;gap:6px;margin-bottom:12px}
.tr-label{font-size:12.5px;font-weight:600;color:var(--muted);display:flex;justify-content:space-between}
.tr-label a{color:var(--accent);font-weight:600}
.tr-input{
  height:44px;padding:0 12px;border-radius:10px;border:1px solid var(--border);
  background:var(--bg);color:var(--txt);font:inherit;font-size:14.5px}
.tr-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 18%,transparent)}
.tr-login-submit{width:100%;margin-top:4px}
.tr-login-alt{margin:14px 0 0;text-align:center;font-size:13.5px;color:var(--muted)}
.tr-login-alt a{color:var(--accent);font-weight:650}

/* strip */
.tr-strip{
  border-block:1px solid var(--border);background:var(--surface);padding:14px 0;overflow:hidden}
.tr-strip-inner{display:flex;flex-wrap:wrap;gap:10px 18px;justify-content:center;align-items:center}
.tr-strip-inner span{
  font-size:13px;font-weight:650;color:var(--muted);letter-spacing:.02em}
.tr-strip-inner span::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;
  background:var(--cyan);margin-right:8px;vertical-align:middle}

/* sections */
.tr-section{padding:clamp(40px,6vw,72px) 0}
.tr-kicker{
  display:inline-block;font-size:11.5px;font-weight:750;letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent);margin:0 0 10px}
.tr-section h2{
  font-size:clamp(24px,3.4vw,34px);font-weight:800;letter-spacing:-.03em;line-height:1.12;margin:0 0 10px}
.tr-section-sub{color:var(--muted);font-size:15.5px;line-height:1.6;margin:0 0 24px;max-width:52ch}

/* pillars */
.tr-pillars{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.tr-pillar{
  background:var(--elevated);border:1px solid var(--border);border-radius:16px;
  padding:20px 18px;box-shadow:var(--ring);transition:border-color .15s,transform .15s}
.tr-pillar:hover{border-color:color-mix(in srgb,var(--accent) 40%,var(--border));transform:translateY(-2px)}
.tr-pillar-ico{
  width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:color-mix(in srgb,var(--accent) 12%,transparent);color:var(--accent);
  font-weight:800;font-size:14px;margin-bottom:12px}
.tr-pillar h3{margin:0 0 6px;font-size:16.5px;font-weight:750;letter-spacing:-.015em}
.tr-pillar p{margin:0;color:var(--muted);font-size:14px;line-height:1.55}

/* service grid */
.tr-svc-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.tr-svc{
  display:flex;flex-direction:column;gap:6px;padding:16px;border-radius:14px;
  border:1px solid var(--border);background:var(--elevated);text-decoration:none;color:inherit;
  transition:border-color .15s,transform .15s,box-shadow .15s}
.tr-svc:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow)}
.tr-svc b{font-size:14.5px;font-weight:750}
.tr-svc span{font-size:12.5px;color:var(--muted);line-height:1.4}

/* steps */
.tr-steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.tr-step{
  background:var(--elevated);border:1px solid var(--border);border-radius:14px;padding:16px}
.tr-step-n{
  display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;
  border-radius:8px;background:var(--txt);color:var(--bg);font-size:12px;font-weight:800;margin-bottom:10px}
.tr-step h3{margin:0 0 4px;font-size:14.5px;font-weight:750}
.tr-step p{margin:0;font-size:13px;color:var(--muted);line-height:1.5}

/* CTA band */
.tr-cta{
  margin:0 0 clamp(40px,6vw,64px);
  background:#140b2e;color:#fff;border-radius:20px;padding:clamp(28px,4vw,40px);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
  border:1px solid rgba(139,92,246,.35)}
.tr-cta h2{margin:0 0 6px;font-size:clamp(22px,3vw,28px);font-weight:800;letter-spacing:-.025em;color:#fff}
.tr-cta p{margin:0;color:rgba(255,255,255,.7);max-width:40ch;font-size:14.5px;line-height:1.55}
.tr-cta-actions{display:flex;flex-wrap:wrap;gap:10px}
.tr-cta .tr-btn{background:#1E40AF;border-color:#1E40AF;color:#fff}
.tr-cta .tr-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.28)}
.tr-cta .tr-ghost:hover{background:rgba(255,255,255,.08)}

/* mini faq */
.tr-faq{display:grid;gap:10px;max-width:760px}
.tr-faq details{
  border:1px solid var(--border);border-radius:12px;background:var(--elevated);padding:12px 14px}
.tr-faq summary{cursor:pointer;font-weight:700;font-size:14.5px;list-style:none}
.tr-faq summary::-webkit-details-marker{display:none}
.tr-faq p{margin:8px 0 0;color:var(--muted);font-size:14px;line-height:1.55}

/* public page shells */
.tr-page{padding:clamp(36px,5vw,56px) 0 clamp(48px,7vw,80px)}
.tr-page h1{font-size:clamp(28px,4vw,40px);font-weight:800;letter-spacing:-.03em;margin:0 0 10px}
.tr-page-lead{color:var(--muted);font-size:16px;max-width:52ch;margin:0 0 24px;line-height:1.6}
.tr-card{
  background:var(--elevated);border:1px solid var(--border);border-radius:16px;padding:20px;box-shadow:var(--ring)}
.tr-prose{font-size:15.5px;line-height:1.7;color:var(--txt);max-width:68ch}
.tr-prose h2{font-size:20px;margin:1.4em 0 .5em}
.tr-prose p{margin:0 0 1em;color:var(--muted)}

/* auth pages */
body.tr.auth{min-height:100vh;display:flex;flex-direction:column}
body.tr.auth .tr-auth{flex:1;display:flex;align-items:center;justify-content:center;padding:40px 16px}
.tr-auth-card{
  width:100%;max-width:420px;background:var(--elevated);border:1px solid var(--border);
  border-radius:18px;padding:28px 24px;box-shadow:var(--shadow)}
.tr-auth-card h1{margin:0 0 6px;font-size:24px;font-weight:800}
.tr-auth-card .tr-lede{margin-bottom:18px;font-size:14.5px}

/* footer */
.tr-foot{border-top:1px solid var(--border);background:var(--surface)}
.tr-foot-cta{
  background:#140b2e;color:#fff;padding:26px 0;border-bottom:1px solid rgba(139,92,246,.25)}
.tr-foot-cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px}
.tr-foot-cta h2{margin:0 0 4px;font-size:clamp(18px,2.4vw,24px);font-weight:800;color:#fff}
.tr-foot-cta p{margin:0;color:rgba(255,255,255,.68);font-size:14px;max-width:40ch}
.tr-foot-body{padding:20px 0 16px}
.tr-foot-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.tr-foot-nav{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.tr-foot-nav a{
  display:inline-flex;padding:7px 12px;border-radius:999px;border:1px solid var(--border);
  background:var(--bg);font-size:13px;font-weight:600;color:var(--muted)}
.tr-foot-nav a:hover{color:var(--accent);border-color:var(--accent)}
.tr-foot-copy{margin:0;color:var(--faint);font-size:12.5px}

/* language grid (blog) */
.tr-foot-langs{margin:0 0 14px;padding:14px 0 0;border-top:1px solid var(--border)}
.tr-foot-langs-title{
  margin:0 0 10px;font-size:15px;font-weight:750;display:flex;align-items:center;gap:8px}
.tr-foot-langs-title::before{
  content:"";width:12px;height:12px;border-radius:50%;background:var(--accent);flex:none}
.tr-foot-langs-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 16px;max-width:520px}
.tr-foot-lang{
  display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:10px;
  color:var(--muted);font-size:14px;border:1px solid transparent;min-width:0}
.tr-foot-lang:hover{background:var(--bg);color:var(--txt)}
.tr-foot-lang.is-cur{background:var(--bg);border-color:var(--border);color:var(--txt)}
.tr-foot-lang-code{
  flex:none;min-width:2.2ch;font-size:12px;font-weight:800;text-transform:uppercase;
  letter-spacing:.04em;color:var(--faint)}
.tr-foot-lang.is-cur .tr-foot-lang-code{color:var(--accent)}
.tr-foot-lang-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:550}
@media(min-width:720px){.tr-foot-langs-grid{grid-template-columns:repeat(3,minmax(0,1fr));max-width:720px}}
@media(min-width:1000px){.tr-foot-langs-grid{grid-template-columns:repeat(4,minmax(0,1fr));max-width:920px}}

/* reveal */
.has-js .reveal,.has-js .reveal-group>*{opacity:0;transform:translateY(14px);transition:opacity .55s ease,transform .55s ease}
.has-js .reveal.in,.has-js .reveal-group.in>*{opacity:1;transform:none}

/* responsive */
@media(max-width:900px){
  .tr-burger{display:inline-flex}
  .tr-nav{
    display:none;position:absolute;inset:58px 12px auto;flex-direction:column;align-items:stretch;
    background:var(--elevated);border:1px solid var(--border);border-radius:14px;padding:10px;
    box-shadow:var(--shadow);z-index:70}
  .tr-nav.open{display:flex}
  .tr-hero-grid{grid-template-columns:1fr}
  .tr-pillars{grid-template-columns:1fr}
  .tr-svc-grid{grid-template-columns:1fr 1fr}
  .tr-steps{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .tr-svc-grid,.tr-steps{grid-template-columns:1fr}
  .tr-hero h1{max-width:none}
}
@media(prefers-reduced-motion:reduce){
  .has-js .reveal,.has-js .reveal-group>*{opacity:1;transform:none;transition:none}
  .tr-pillar:hover,.tr-svc:hover{transform:none}
}

/* ============ /api — TeleRanks: reading column + right sticky TOC ============ */
body.tr .tr-api-shell{max-width:var(--maxw);margin:0 auto;padding:0 clamp(16px,2.5vw,36px) 64px}
body.tr .fs-api{
  display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:36px;align-items:start;
  max-width:none;margin:0;padding:32px 0 0}
body.tr .fs-toc{order:2}
body.tr .fs-body{order:1;min-width:0}
body.tr .fs-toc{
  position:sticky;top:72px;background:var(--elevated);border:1px solid var(--border);border-radius:16px;
  padding:16px 12px;max-height:calc(100vh - 96px);overflow:auto;display:flex;flex-direction:column;gap:2px;
  box-shadow:var(--shadow)}
body.tr .fs-toc-title{color:var(--accent);font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;padding:4px 10px 12px}
body.tr .fs-toc a{color:var(--muted);padding:8px 10px;border-radius:10px;font-size:13px;font-weight:550;text-decoration:none;border-left:3px solid transparent}
body.tr .fs-toc a:hover{background:var(--inset);color:var(--txt)}
body.tr .fs-toc a.active{background:color-mix(in srgb,var(--accent) 12%,transparent);color:var(--accent);border-left-color:var(--accent);font-weight:700}
body.tr .fs-header{margin:0 0 28px;padding:0 0 20px;border-bottom:2px solid var(--accent)}
body.tr .fs-header h1{margin:0 0 8px;font-size:clamp(32px,4.2vw,44px);font-weight:800;letter-spacing:-.035em;color:var(--txt)}
body.tr .fs-header .muted{color:var(--muted);margin:0;font-size:16px;max-width:48ch}
body.tr .fs-sec{margin:0 0 32px;padding:0 0 28px;border-bottom:1px solid var(--border);background:transparent;scroll-margin-top:84px;counter-increment:trapi}
body.tr .fs-sec:last-child{border-bottom:0}
body.tr .fs-body{counter-reset:trapi}
body.tr .fs-sec h3{margin:0 0 14px;font-size:22px;font-weight:800;letter-spacing:-.02em;color:var(--txt);border:0;padding:0;display:flex;align-items:baseline;gap:12px}
body.tr .fs-sec h3::before{content:counter(trapi, decimal-leading-zero);font-size:13px;font-weight:800;color:var(--accent);letter-spacing:.06em}
body.tr .fs-sec h4.fs-sub{display:inline-block;margin:16px 0 10px;padding:6px 12px;border-radius:8px;background:#140b2e;color:#fff;font-size:12px;font-weight:700}
body.tr .fs-sec p{color:var(--muted);font-size:14.5px;line-height:1.65}
body.tr .fs-label{font-size:11px;text-transform:uppercase;letter-spacing:.1em;font-weight:800;color:var(--faint);margin:14px 0 6px!important}
body.tr .fs-info,body.tr .fs-params{width:100%;border-collapse:collapse;border:1px solid var(--border);border-radius:14px;overflow:hidden;background:var(--elevated);margin-bottom:10px;box-shadow:var(--ring)}
body.tr .fs-info td,body.tr .fs-params th,body.tr .fs-params td{padding:11px 14px;border-bottom:1px solid var(--border);font-size:13.5px;text-align:left;vertical-align:top;overflow-wrap:anywhere}
body.tr .fs-info tr:last-child td,body.tr .fs-params tr:last-child td{border-bottom:0}
body.tr .fs-info td:first-child{width:30%;background:color-mix(in srgb,var(--accent) 10%,var(--inset));color:var(--accent);font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.06em}
body.tr .fs-params th{background:var(--inset);font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--faint);font-weight:800}
body.tr .fs-params td:first-child{font-family:var(--mono);font-size:12.5px;font-weight:700;width:32%}
body.tr .fs-info code,body.tr .fs-params code,body.tr .fs-sec code{color:var(--accent);font-family:var(--mono);font-size:.9em}
body.tr .fs-code{display:block;overflow-x:auto;margin:0;padding:16px 18px;border-radius:14px;background:#eff6ff;color:#1e3a5f;border:1px solid #bfdbfe;font-family:var(--mono);font-size:12.5px;line-height:1.55}
body.tr .fs-code .c-p{color:#1e40af}body.tr .fs-code .c-s{color:#1e3a5f}body.tr .fs-code .c-v{color:#1e40af}
[data-theme="dark"] body.tr .fs-code{background:#140b2e;color:#efe9ff;border-color:rgba(139,92,246,.35)}
[data-theme="dark"] body.tr .fs-code .c-p{color:#c4b5fd}[data-theme="dark"] body.tr .fs-code .c-s{color:#fff}[data-theme="dark"] body.tr .fs-code .c-v{color:#a78bfa}
body.tr .opt-tag{margin-left:6px;padding:1px 7px;border-radius:999px;background:var(--inset);font-size:10px;color:var(--faint)}
@media(max-width:960px){
  body.tr .fs-api{grid-template-columns:1fr}
  body.tr .fs-toc{order:0;position:static;max-height:none;margin-bottom:18px}
  body.tr .fs-body{order:1}
}