/* ======================================================
   LetterBot RU — Premium Stylesheet v4
   Direction: dark ink · amber glow · mono accents · editorial
   Fonts: Unbounded (display) + Manrope (body) + JetBrains Mono
   ====================================================== */

@import url('https://fonts.googleapis.com/css2?family=Unbounded:wght@400;600;700;900&family=Manrope:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── tokens ── */
:root {
  --ink:      #07090f;
  --ink2:     #0c0f18;
  --ink3:     #111622;
  --ink4:     #18202f;
  --ink5:     #1f2a3d;
  --line:     rgba(255,255,255,0.07);
  --line2:    rgba(255,255,255,0.13);
  --amber:    #f59e0b;
  --amber2:   #d97706;
  --amber3:   rgba(245,158,11,0.12);
  --teal:     #2dd4bf;
  --green:    #4ade80;
  --red:      #f87171;
  --blue:     #60a5fa;
  --purple:   #a78bfa;
  --text:     #edf0f8;
  --muted:    rgba(237,240,248,0.75);
  --muted2:   rgba(237,240,248,0.45);
  --surface:  rgba(255,255,255,0.035);
  --surface2: rgba(255,255,255,0.07);
  --surface3: rgba(255,255,255,0.10);
  --radius:   10px;
  --radius2:  18px;
  --shadow:   0 16px 56px rgba(0,0,0,0.65);
  --shadow2:  0 4px 20px rgba(0,0,0,0.4);
  --font-h:   'Unbounded', sans-serif;
  --font-b:   'Manrope', sans-serif;
  --font-m:   'JetBrains Mono', monospace;
  --max:      1140px;
}

/* ── reset ── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-b);
  background:var(--ink);
  color:var(--text);
  line-height:1.72;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:var(--amber);text-decoration:none}
a:hover{text-decoration:underline;opacity:.9}
img{max-width:100%;display:block}
ul,ol{list-style:none}
figure{margin:0}

code,kbd{
  font-family:var(--font-m);
  font-size:.82em;
  background:var(--amber3);
  border:1px solid rgba(245,158,11,0.22);
  border-radius:4px;
  padding:1px 6px;
  color:var(--amber);
}

/* ── noise grain ── */
body::before{
  content:'';
  position:fixed;inset:0;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='.045'/%3E%3C/svg%3E");
  pointer-events:none;z-index:0;opacity:.5;
}
body>*{position:relative;z-index:1}

/* ── layout ── */
.wrap{max-width:var(--max);margin:0 auto;padding:0 28px}
.section{padding:92px 0}
.section-sm{padding:56px 0}

/* ── nav ── */
.nav{
  position:sticky;top:0;z-index:200;
  background:rgba(7,9,15,.92);
  backdrop-filter:blur(22px) saturate(1.4);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  display:flex;align-items:center;
  height:62px;gap:4px;
}
.brand{
  display:flex;align-items:center;gap:11px;
  font-family:var(--font-h);font-weight:700;font-size:15px;
  color:var(--text);letter-spacing:-.3px;
  white-space:nowrap;text-decoration:none;margin-right:20px;
  flex-shrink:0;
}
.brand:hover{text-decoration:none;opacity:.9}
.brand-icon{
  width:34px;height:34px;border-radius:8px;
  background:var(--amber);
  display:grid;place-items:center;
  font-size:16px;flex-shrink:0;
  box-shadow:0 2px 14px rgba(245,158,11,.55);
  color:#000;font-weight:700;
}
.brand-tag{
  display:block;font-size:9px;font-weight:400;
  color:var(--muted2);letter-spacing:.5px;text-transform:uppercase;
  font-family:var(--font-b);margin-top:1px;
}
.nav-links{
  display:flex;align-items:center;gap:2px;flex:1;
}
.nav-links a{
  font-size:13px;font-weight:500;color:var(--muted);
  padding:6px 11px;border-radius:7px;
  transition:color .18s,background .18s;
  white-space:nowrap;
}
.nav-links a:hover,.nav-links a[aria-current]{
  color:var(--text);background:var(--surface2);
  text-decoration:none;
}
.nav-end{display:flex;align-items:center;gap:8px;margin-left:auto}
.mob-btn{
  display:none;background:none;border:none;
  color:var(--text);font-size:20px;cursor:pointer;
  padding:6px;border-radius:7px;
  margin-left:auto;
}
.mob-nav{
  display:none;flex-direction:column;gap:4px;
  padding:16px 24px 20px;border-top:1px solid var(--line);
  background:var(--ink2);
}
.mob-nav a{font-size:15px;font-weight:500;padding:10px 0;color:var(--muted);border-bottom:1px solid var(--line)}
.mob-nav a:hover,.mob-nav a[aria-current]{color:var(--amber)}
.mob-nav.open{display:flex}

/* ── buttons ── */
.btn{
  display:inline-flex;align-items:center;gap:7px;
  padding:10px 22px;border-radius:10px;font-weight:700;
  font-size:14px;font-family:var(--font-b);
  cursor:pointer;border:none;transition:all .2s;
  text-decoration:none;white-space:nowrap;letter-spacing:.1px;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-sm{padding:7px 16px;font-size:13px}
.btn-lg{padding:14px 32px;font-size:16px}
.btn-amber{background:var(--amber);color:#000;box-shadow:0 4px 22px rgba(245,158,11,.38)}
.btn-amber:hover{background:#fbbf24;box-shadow:0 6px 30px rgba(245,158,11,.55)}
.btn-outline{background:transparent;color:var(--text);border:1px solid var(--line2)}
.btn-outline:hover{background:var(--surface2);border-color:rgba(255,255,255,.2)}
.btn-ghost{background:var(--surface);color:var(--text);border:1px solid var(--line)}
.btn-ghost:hover{background:var(--surface2)}
.btn-teal{background:rgba(45,212,191,.12);color:var(--teal);border:1px solid rgba(45,212,191,.25)}
.btn-teal:hover{background:rgba(45,212,191,.22)}

/* ── hero ── */
.hero{
  padding:72px 0 88px;
  position:relative;overflow:hidden;
}
.hero::after{
  content:'';position:absolute;
  top:-220px;right:-340px;
  width:760px;height:760px;
  background:radial-gradient(circle,rgba(245,158,11,.07) 0%,transparent 65%);
  pointer-events:none;
}
.hero::before{
  content:'';position:absolute;
  bottom:-100px;left:-200px;
  width:500px;height:500px;
  background:radial-gradient(circle,rgba(45,212,191,.05) 0%,transparent 65%);
  pointer-events:none;z-index:0;
}

/* ── hero top strip ── */
.hero-top-strip{
  display:flex;flex-wrap:wrap;gap:8px;
  margin-bottom:32px;
}
.htag{
  font-size:12px;font-weight:700;
  padding:5px 13px;border-radius:20px;
  background:var(--surface2);border:1px solid var(--line2);
  color:var(--muted);letter-spacing:.2px;
  font-family:var(--font-b);
}
.htag.green{background:rgba(74,222,128,.1);border-color:rgba(74,222,128,.25);color:var(--green)}
.htag.teal{background:rgba(45,212,191,.1);border-color:rgba(45,212,191,.25);color:var(--teal)}
.htag.amber{background:var(--amber3);border-color:rgba(245,158,11,.28);color:var(--amber)}

.hero-grid{
  display:grid;grid-template-columns:1fr 420px;
  gap:60px;align-items:start;
}
.eyebrow{
  font-family:var(--font-m);font-size:11px;
  color:var(--amber);text-transform:uppercase;letter-spacing:1.5px;
  margin-bottom:22px;
}
.hero h1{
  font-family:var(--font-h);font-size:clamp(28px,4.2vw,50px);
  font-weight:900;line-height:1.1;letter-spacing:-1.5px;
  margin-bottom:18px;
}
.h1-highlight{
  color:var(--amber);display:inline;
}
.hero-lead{
  font-size:18px;color:var(--muted);line-height:1.72;
  max-width:560px;margin-bottom:28px;font-weight:500;
}

/* ── advantages list ── */
.adv-list{
  list-style:none;
  margin:0 0 32px;
  padding:0;
  display:flex;flex-direction:column;gap:10px;
}
.adv-list li{
  display:flex;align-items:baseline;gap:11px;
  font-size:15px;color:var(--muted);line-height:1.55;
  font-weight:500;
}
.adv-list li strong{
  color:var(--text);font-weight:700;
}
.adv-icon{
  flex-shrink:0;
  font-family:var(--font-h);font-size:14px;font-weight:800;
  color:var(--muted2);min-width:20px;text-align:center;
  line-height:1;
}
.adv-icon.green{color:var(--green)}
.adv-icon.teal{color:var(--teal)}
.adv-icon.amber{color:var(--amber)}

.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:36px}

/* ── stats bar ── */
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:1px;background:var(--line);border-radius:14px;overflow:hidden;
  border:1px solid var(--line);
}
.stat{
  background:var(--ink2);padding:16px 18px;
}
.stat-val{
  font-family:var(--font-h);font-size:22px;font-weight:700;
  color:var(--amber);display:block;
}
.stat-label{font-size:11px;color:var(--muted2);margin-top:4px;font-weight:500}

/* ── telegram mock ── */
.tg-card{
  background:var(--ink3);
  border:1px solid var(--line2);border-radius:var(--radius2);
  overflow:hidden;box-shadow:var(--shadow);
}
.tg-header{
  background:var(--ink4);padding:12px 16px;
  display:flex;align-items:center;gap:10px;
  border-bottom:1px solid var(--line);
}
.tg-avatar{
  width:36px;height:36px;border-radius:50%;
  background:var(--amber);display:grid;place-items:center;
  font-size:14px;color:#000;font-weight:700;flex-shrink:0;
}
.tg-name{font-weight:700;font-size:14px}
.tg-sub{font-size:11px;color:var(--teal)}
.tg-body{padding:16px}
.tg-msg{
  background:var(--ink4);border-radius:12px 12px 12px 4px;
  padding:14px 16px;margin-bottom:10px;font-size:14px;
  line-height:1.6;border-left:3px solid var(--amber);
}
.tg-msg .pri{font-weight:700;font-size:13px;margin-bottom:6px}
.tg-msg .subject{font-weight:700;color:var(--text);margin-bottom:4px}
.tg-msg .action{color:var(--green);font-size:13px;margin-top:6px}
.tg-msg .meta{font-size:11px;color:var(--muted2);margin-top:6px;font-family:var(--font-m)}
.tg-btns{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.tg-btn{
  background:var(--ink4);border:1px solid var(--line2);
  border-radius:8px;padding:6px 12px;font-size:12px;
  color:var(--muted);cursor:pointer;font-family:var(--font-b);font-weight:600;
}
.tg-btn.hi{background:rgba(248,113,113,.1);border-color:rgba(248,113,113,.25);color:var(--red)}
.tg-btn.med{background:rgba(251,191,36,.08);border-color:rgba(251,191,36,.2);color:var(--amber)}
.tg-btn.lo{background:rgba(74,222,128,.07);border-color:rgba(74,222,128,.18);color:var(--green)}

/* ── sections ── */
h2{
  font-family:var(--font-h);font-size:clamp(21px,3.2vw,34px);
  font-weight:800;letter-spacing:-1px;line-height:1.15;
  margin-bottom:14px;
}
h3{font-family:var(--font-h);font-size:15px;font-weight:700;letter-spacing:-.3px;margin-bottom:8px}
.section-lead{font-size:17px;color:var(--muted);margin-bottom:44px;max-width:660px;line-height:1.72;font-weight:500}
.section-eyebrow{font-family:var(--font-m);font-size:10px;letter-spacing:2px;text-transform:uppercase;color:var(--amber);margin-bottom:14px}

/* ── feature grid ── */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px}
.fcard{
  background:var(--ink2);border:1px solid var(--line);
  border-radius:var(--radius2);padding:26px 28px;
  transition:border-color .2s,transform .2s;
}
.fcard:hover{border-color:var(--line2);transform:translateY(-2px)}
.fcard-icon{
  width:42px;height:42px;border-radius:10px;
  display:grid;place-items:center;font-size:19px;
  margin-bottom:14px;flex-shrink:0;
}
.fcard-icon.amber{background:var(--amber3)}
.fcard-icon.teal{background:rgba(45,212,191,.1)}
.fcard-icon.green{background:rgba(74,222,128,.1)}
.fcard-icon.blue{background:rgba(96,165,250,.1)}
.fcard-icon.red{background:rgba(248,113,113,.1)}
.fcard-icon.purple{background:rgba(167,139,250,.1)}
.fcard h3{font-size:16px;color:var(--text)}
.fcard p{font-size:15px;color:var(--muted);line-height:1.65;margin-top:6px}
.fcard-tag{
  display:inline-block;margin-top:12px;
  font-family:var(--font-m);font-size:10px;
  color:var(--amber);background:var(--amber3);
  border:1px solid rgba(245,158,11,.2);
  border-radius:4px;padding:2px 8px;
}

/* ── cockpit section ── */
.cockpit-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:24px;
}
.cockpit-card{
  background:var(--ink2);border:1px solid var(--line2);
  border-radius:var(--radius2);overflow:hidden;
  transition:border-color .2s,transform .2s;
  box-shadow:var(--shadow2);
}
.cockpit-card:hover{border-color:rgba(245,158,11,.3);transform:translateY(-3px)}
.cockpit-card img{
  width:100%;display:block;
  border-bottom:1px solid var(--line);
}
.cockpit-card figcaption{
  padding:20px 24px;
}
.cockpit-card figcaption strong{
  display:block;font-family:var(--font-h);font-size:14px;
  font-weight:700;color:var(--text);margin-bottom:8px;
  letter-spacing:-.2px;
}
.cockpit-card figcaption p{
  font-size:14px;color:var(--muted);line-height:1.65;
}

/* ── fit section ── */
.fit-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:8px}
.fit-card{
  background:var(--ink2);border:1px solid var(--line);
  border-radius:var(--radius2);padding:24px 26px;
}
.fit-card.good{border-color:rgba(74,222,128,.2)}
.fit-card.bad{border-color:rgba(248,113,113,.12)}
.fit-card h3{font-size:15px;margin-bottom:16px}
.fit-card h3.good{color:var(--green)}
.fit-card h3.bad{color:var(--red)}
.fit-ul{display:flex;flex-direction:column;gap:8px;list-style:none}
.fit-ul li{font-size:14px;color:var(--muted);display:flex;gap:9px;align-items:baseline;line-height:1.5}
.fit-ul li::before{content:'✓';color:var(--green);font-weight:800;flex-shrink:0}
.fit-ul.no li::before{content:'✗';color:rgba(248,113,113,.7)}

/* ── comparison table ── */
.cmp-table{width:100%;border-collapse:collapse;font-size:14px}
.cmp-table th{
  font-family:var(--font-h);font-size:11px;font-weight:700;
  text-transform:uppercase;letter-spacing:.5px;
  padding:14px 20px;background:var(--ink3);
  border-bottom:1px solid var(--line2);text-align:left;color:var(--muted);
}
.cmp-table th:first-child{color:var(--text)}
.cmp-table td{
  padding:13px 20px;border-bottom:1px solid var(--line);
  vertical-align:middle;font-size:14px;
}
.cmp-table tr:last-child td{border-bottom:none}
.cmp-table tr:hover td{background:var(--surface)}
.cmp-table td:first-child{color:var(--muted);font-size:13px;font-weight:600}
.cmp-table .lb-col{color:var(--amber);font-weight:700}
.cmp-yes{color:var(--green);font-weight:600}
.cmp-no{color:var(--muted2)}
.cmp-part{color:var(--amber)}
.table-wrap{
  background:var(--ink2);border:1px solid var(--line);
  border-radius:var(--radius2);overflow:hidden;overflow-x:auto;
}

/* ── arch cards ── */
.arch-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.arch-card{
  background:var(--ink2);border:1px solid var(--line);
  border-radius:var(--radius2);padding:20px 22px;
}
.arch-card h4{
  font-family:var(--font-m);font-size:12px;font-weight:500;
  color:var(--teal);margin-bottom:10px;letter-spacing:.5px;
}
.arch-card p{font-size:14px;color:var(--muted);line-height:1.65}

/* ── code block ── */
.code-block{
  background:var(--ink3);border:1px solid var(--line2);
  border-radius:var(--radius2);padding:20px 24px;
  font-family:var(--font-m);font-size:13px;
  line-height:1.8;overflow-x:auto;
}
.code-block .comment{color:var(--muted2)}
.code-block .key{color:var(--amber)}
.code-block .val{color:var(--green)}
.code-block .prompt{color:var(--teal)}

/* ── faq ── */
.faq-search-wrap{
  display:flex;align-items:center;gap:12px;
  margin-bottom:36px;flex-wrap:wrap;
}
#faq-search{
  flex:1;min-width:240px;max-width:520px;
  background:var(--ink3);border:1px solid var(--line2);
  border-radius:10px;padding:11px 16px;
  font-size:14px;color:var(--text);
  font-family:var(--font-b);outline:none;
  transition:border-color .2s,box-shadow .2s;
}
#faq-search:focus{
  border-color:rgba(245,158,11,.4);
  box-shadow:0 0 0 3px rgba(245,158,11,.1);
}
#faq-search::placeholder{color:var(--muted2)}
#faq-empty{
  display:none;text-align:center;padding:40px;
  color:var(--muted);font-size:15px;
}
.faq-section-label{
  font-family:var(--font-m);font-size:10px;
  text-transform:uppercase;letter-spacing:1.8px;
  color:var(--amber);margin:36px 0 14px;
}
.faq-item{
  border:1px solid var(--line);border-radius:12px;
  margin-bottom:8px;overflow:hidden;
  transition:border-color .2s;
}
.faq-item:hover{border-color:var(--line2)}
.faq-item[data-hidden]{display:none}
.faq-q{
  display:flex;justify-content:space-between;align-items:center;
  padding:17px 22px;cursor:pointer;
  font-weight:700;font-size:15px;color:var(--text);
  gap:12px;user-select:none;
  background:var(--ink2);
}
.faq-q:hover{background:var(--ink3)}
.faq-q .faq-ic{
  flex-shrink:0;width:22px;height:22px;
  border-radius:50%;background:var(--surface2);
  display:grid;place-items:center;
  font-size:14px;transition:transform .25s;
  color:var(--amber);
}
.faq-item.open .faq-q .faq-ic{transform:rotate(45deg)}
.faq-body{
  display:none;padding:18px 22px 22px;
  font-size:15px;color:var(--muted);line-height:1.75;
  background:var(--ink2);border-top:1px solid var(--line);
}
.faq-item.open .faq-body{display:block}
.faq-body strong{color:var(--text)}
.faq-body code{font-size:.82em}
.faq-match{background:rgba(245,158,11,.22);border-radius:2px;padding:0 2px}

/* ── donate ── */
.donate-box{
  background:linear-gradient(135deg,var(--ink3) 0%,var(--ink2) 100%);
  border:1px solid var(--line2);
  border-radius:var(--radius2);padding:36px;
  display:flex;gap:36px;align-items:flex-start;flex-wrap:wrap;
}
.donate-qr{
  width:148px;height:148px;flex-shrink:0;
  border-radius:14px;overflow:hidden;background:#fff;padding:8px;
  box-shadow:0 4px 20px rgba(0,0,0,.4);
}
.donate-qr img{width:100%;height:100%;object-fit:contain}
.donate-text{flex:1;min-width:260px}
.donate-text h3{
  font-family:var(--font-h);margin-bottom:12px;font-size:20px;
  font-weight:800;letter-spacing:-.5px;
}
.donate-text .donate-lead{
  color:var(--muted);font-size:15px;margin-bottom:20px;line-height:1.7;
}
.donate-btns{display:flex;gap:10px;flex-wrap:wrap}

/* ── page hero ── */
.page-hero{
  padding:64px 0 56px;
  border-bottom:1px solid var(--line);
}
.page-hero h1{
  font-family:var(--font-h);font-size:clamp(22px,4vw,42px);
  font-weight:900;letter-spacing:-1.2px;line-height:1.1;
  margin-bottom:14px;
}
.page-hero p{font-size:17px;color:var(--muted);max-width:600px;line-height:1.72;font-weight:500}

/* ── highlight boxes ── */
.hbox{
  background:var(--amber3);border:1px solid rgba(245,158,11,.22);
  border-radius:var(--radius);padding:16px 20px;
  font-size:15px;line-height:1.7;margin:20px 0;
}
.hbox strong{color:var(--amber)}
.tbox{
  background:rgba(45,212,191,.06);border:1px solid rgba(45,212,191,.18);
  border-radius:var(--radius);padding:16px 20px;
  font-size:15px;line-height:1.7;margin:20px 0;
}
.tbox strong{color:var(--teal)}
.gbox{
  background:rgba(74,222,128,.06);border:1px solid rgba(74,222,128,.18);
  border-radius:var(--radius);padding:16px 20px;
  font-size:15px;line-height:1.7;
}
.gbox strong{color:var(--green)}

/* ── two-col ── */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.three-col{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}

/* ── log mock ── */
.log-mock{
  background:var(--ink);border:1px solid var(--line2);
  border-radius:var(--radius2);padding:20px 24px;
  font-family:var(--font-m);font-size:12.5px;line-height:1.9;
  overflow-x:auto;
}
.log-mock .ok{color:var(--green)}
.log-mock .warn{color:var(--amber)}
.log-mock .err{color:var(--red)}
.log-mock .info{color:var(--blue)}
.log-mock .ts{color:var(--muted2)}
.log-mock .ev{color:var(--teal)}

/* ── steps ── */
.steps{display:flex;flex-direction:column;gap:0}
.step{
  display:flex;gap:22px;padding:22px 0;
  border-bottom:1px solid var(--line);
}
.step:last-child{border-bottom:none}
.step-num{
  width:34px;height:34px;border-radius:50%;
  background:var(--amber);color:#000;
  font-weight:800;font-family:var(--font-h);font-size:13px;
  display:grid;place-items:center;flex-shrink:0;margin-top:2px;
}
.step-body h4{font-family:var(--font-h);font-size:14px;font-weight:700;margin-bottom:8px}
.step-body p{font-size:15px;color:var(--muted);line-height:1.7}

/* ── deterministic section ── */
.determ-section{
  background:linear-gradient(135deg,rgba(45,212,191,.05) 0%,rgba(245,158,11,.04) 100%);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:64px 0;
}
.determ-checks{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));
  gap:12px;margin-top:28px;
}
.determ-check{
  display:flex;gap:12px;align-items:baseline;
  font-size:15px;color:var(--muted);font-weight:500;
}
.determ-check::before{
  content:'✓';color:var(--green);font-weight:900;
  font-size:16px;flex-shrink:0;margin-top:1px;
}

/* ── footer ── */
.footer{
  padding:52px 0 36px;
  border-top:1px solid var(--line);margin-top:40px;
}
.footer-grid{
  display:grid;grid-template-columns:1fr 1fr 1fr;gap:32px;
  margin-bottom:36px;
}
.footer-col h4{
  font-family:var(--font-h);font-size:11px;font-weight:700;
  text-transform:uppercase;letter-spacing:1px;
  color:var(--muted2);margin-bottom:14px;
}
.footer-col a{
  display:block;font-size:13px;color:var(--muted);
  margin-bottom:9px;font-weight:500;
}
.footer-col a:hover{color:var(--amber)}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;
  flex-wrap:wrap;gap:12px;
  padding-top:24px;border-top:1px solid var(--line);
  font-size:12px;color:var(--muted2);
}
.footer-bottom a{color:var(--muted)}
.footer-bottom a:hover{color:var(--amber)}

/* ── misc utilities ── */
.tag{
  display:inline-block;font-family:var(--font-m);font-size:10px;
  padding:3px 9px;border-radius:4px;
  background:var(--surface2);border:1px solid var(--line2);
  color:var(--muted);
}
.tag.amber{background:var(--amber3);border-color:rgba(245,158,11,.2);color:var(--amber)}
.tag.green{background:rgba(74,222,128,.08);border-color:rgba(74,222,128,.2);color:var(--green)}
.tag.teal{background:rgba(45,212,191,.08);border-color:rgba(45,212,191,.2);color:var(--teal)}
.skip-link{position:absolute;top:-60px;left:0;background:var(--amber);color:#000;padding:8px 16px;border-radius:0 0 8px 0;font-weight:700;transition:top .2s;z-index:999}
.skip-link:focus{top:0}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
.divider{border:none;border-top:1px solid var(--line);margin:40px 0}
.centered{text-align:center}
.muted{color:var(--muted)}
.small{font-size:13px}
input[type="search"],input[type="text"]{
  background:var(--ink3);border:1px solid var(--line2);
  border-radius:10px;padding:10px 16px;
  font-size:14px;color:var(--text);
  font-family:var(--font-b);outline:none;width:100%;
  transition:border-color .2s,box-shadow .2s;
}
input:focus{border-color:rgba(245,158,11,.4);box-shadow:0 0 0 3px rgba(245,158,11,.1)}

/* ── engineer page ── */
.eng-hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(45,212,191,.07);border:1px solid rgba(45,212,191,.18);
  border-radius:8px;padding:8px 14px;font-size:13px;color:var(--teal);
  font-family:var(--font-m);margin-bottom:20px;
}
.metrics-bar{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));
  gap:12px;margin:28px 0;
}
.metric-box{
  background:var(--ink2);border:1px solid var(--line);
  border-radius:12px;padding:16px 18px;
}
.metric-box .mv{
  font-family:var(--font-h);font-size:20px;font-weight:700;
  color:var(--amber);display:block;
}
.metric-box .ml{font-size:12px;color:var(--muted);margin-top:4px}

/* ── priority chips ── */
.pri-chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:20px;
}
.pri-chip.red{background:rgba(248,113,113,.1);color:var(--red);border:1px solid rgba(248,113,113,.2)}
.pri-chip.amber{background:var(--amber3);color:var(--amber);border:1px solid rgba(245,158,11,.2)}
.pri-chip.green{background:rgba(74,222,128,.08);color:var(--green);border:1px solid rgba(74,222,128,.2)}

/* ── badge row (old style compat) ── */
.badge-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:32px}
.badge{
  font-size:12px;font-weight:600;
  padding:5px 12px;border-radius:20px;
  background:var(--surface2);border:1px solid var(--line2);
  color:var(--muted);letter-spacing:.2px;
}
.badge.green{background:rgba(74,222,128,.08);border-color:rgba(74,222,128,.2);color:var(--green)}
.badge.amber{background:var(--amber3);border-color:rgba(245,158,11,.25);color:var(--amber)}
.badge.teal{background:rgba(45,212,191,.08);border-color:rgba(45,212,191,.2);color:var(--teal)}

/* ── responsive ── */
@media(max-width:960px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .two-col,.three-col,.footer-grid{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:repeat(4,1fr)}
  .cockpit-grid{grid-template-columns:1fr}
  .fit-grid{grid-template-columns:1fr}
  .determ-checks{grid-template-columns:1fr 1fr}
}
@media(max-width:720px){
  .section{padding:64px 0}
  .wrap{padding:0 18px}
  .nav-links{display:none}
  .mob-btn{display:block}
  .nav-end{display:none}
  h2{font-size:22px}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .feature-grid{grid-template-columns:1fr}
  .arch-grid{grid-template-columns:1fr}
  .metrics-bar{grid-template-columns:repeat(2,1fr)}
  .donate-box{flex-direction:column}
  .donate-qr{width:120px;height:120px}
  .determ-checks{grid-template-columns:1fr}
  body{font-size:16px}
  .hero h1{letter-spacing:-1px}
  .hero-lead{font-size:16px}
}
@media(max-width:480px){
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .hero-top-strip{gap:6px}
  .htag{font-size:11px;padding:4px 10px}
}