/* TRONBridge - calm dark theme, low-glare palette */
:root{
  --bg:#0e1319;
  --bg-2:#131a22;
  --surface:#18212b;
  --surface-2:#1e2936;
  --border:#2b3947;
  --text:#e3e9f0;
  --muted:#9aa9b9;
  --accent:#6cc0b2;
  --accent-strong:#8fd6c9;
  --accent-2:#8fb8e0;
  --warm:#e6c48f;
  --focus:#9fe3d6;
  --radius:12px;
  --shadow:0 10px 30px rgba(0,0,0,.25);
  --font:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.65;overflow-x:hidden;min-height:100vh;display:flex;flex-direction:column}
img,svg{display:block;max-width:100%}
a{color:var(--accent-strong);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:2px solid var(--focus);outline-offset:3px;border-radius:6px}
h1,h2,h3{line-height:1.25;color:#f3f6f9;font-weight:700}
h1{font-size:clamp(2rem,4.4vw,3.2rem);letter-spacing:-.02em}
h2{font-size:clamp(1.5rem,3vw,2.1rem);letter-spacing:-.01em}
h3{font-size:1.15rem}
p{color:var(--muted);max-width:68ch}
ul{padding-left:1.2rem;color:var(--muted)}
li{margin:.35rem 0}
.wrap{width:min(1120px,calc(100% - 32px));margin-inline:auto}
main{flex:1}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(14,19,25,.88);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.nav-row{display:flex;align-items:center;justify-content:space-between;gap:16px;height:68px}
.logo{display:flex;align-items:center;gap:10px;color:#f3f6f9;font-weight:700;font-size:1.05rem}
.logo:hover{text-decoration:none}
.logo-mark{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--accent),var(--accent-2));display:grid;place-items:center}
.primary-nav{display:flex;gap:6px;align-items:center}
.primary-nav a{color:var(--muted);padding:8px 12px;border-radius:8px;font-size:.95rem}
.primary-nav a:hover,.primary-nav a[aria-current="page"]{color:#f3f6f9;background:var(--surface);text-decoration:none}
.nav-toggle{display:none}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:inherit;font-weight:600;font-size:.95rem;padding:12px 22px;border-radius:10px;border:1px solid transparent;cursor:pointer;transition:background .2s,border-color .2s,color .2s;text-decoration:none;line-height:1.2}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--accent);color:#0b1714}
.btn-primary:hover{background:var(--accent-strong)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--border)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent-strong)}
.btn-small{padding:9px 16px;font-size:.88rem}

/* Hero */
.hero{padding:88px 0 64px}
.eyebrow{display:inline-block;font-size:.8rem;letter-spacing:.08em;text-transform:uppercase;color:var(--accent-strong);background:var(--surface);border:1px solid var(--border);padding:6px 12px;border-radius:999px;margin-bottom:22px}
.hero h1{margin-bottom:20px}
.hero .lead{font-size:1.1rem;margin-bottom:32px}
.btn-row{display:flex;flex-wrap:wrap;gap:12px}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center}
.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.panel h3{margin-bottom:10px}
.panel dl{display:grid;gap:12px;margin-top:14px}
.panel dl div{display:flex;justify-content:space-between;gap:12px;border-bottom:1px dashed var(--border);padding-bottom:10px}
.panel dt{color:var(--muted)}
.panel dd{color:var(--text);text-align:right}

/* Sections */
section.block{padding:72px 0;border-top:1px solid var(--border)}
.section-head{max-width:720px;margin-bottom:36px}
.section-head p{margin-top:12px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:26px;transition:border-color .2s,transform .2s}
.card:hover{border-color:#3c4d5f;transform:translateY(-2px)}
.card .tag{font-size:.78rem;color:var(--accent-2);text-transform:uppercase;letter-spacing:.07em;margin-bottom:10px;display:block}
.card p{margin-top:8px;font-size:.97rem}
.card a.more{display:inline-block;margin-top:14px;font-weight:600}
.steps{counter-reset:s;list-style:none;padding:0;display:grid;gap:14px;max-width:760px}
.steps li{counter-increment:s;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px 18px 68px;position:relative;margin:0;color:var(--muted)}
.steps li::before{content:counter(s);position:absolute;left:20px;top:16px;width:32px;height:32px;border-radius:50%;background:var(--surface-2);color:var(--accent-strong);display:grid;place-items:center;font-weight:700}
.steps strong{color:var(--text)}

/* Notice */
.notice{border-left:3px solid var(--warm);background:var(--surface);padding:18px 20px;border-radius:8px;color:var(--muted);font-size:.95rem}
.notice strong{color:var(--text)}

/* FAQ */
.faq-list{max-width:820px;display:grid;gap:10px}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius)}
.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:16px;background:none;border:0;color:var(--text);font:inherit;font-weight:600;text-align:left;padding:18px 20px;cursor:pointer;font-size:1rem}
.faq-q::after{content:"+";font-size:1.4rem;color:var(--accent-strong);line-height:1}
.faq-item.open .faq-q::after{content:"−"}
.faq-a{display:none;padding:0 20px 18px;color:var(--muted)}
.faq-item.open .faq-a{display:block}

/* Page header */
.page-hero{padding:72px 0 40px;border-bottom:1px solid var(--border);background:linear-gradient(180deg,var(--bg-2),var(--bg))}
.crumbs{font-size:.88rem;color:var(--muted);margin-bottom:14px}
.crumbs a{color:var(--muted)}
.page-hero p{margin-top:14px;font-size:1.05rem}
.status{display:inline-block;margin-top:18px;font-size:.85rem;color:var(--warm);border:1px solid rgba(230,196,143,.35);padding:5px 12px;border-radius:999px}

.prose{max-width:760px}
.prose h2{margin:44px 0 14px}
.prose h3{margin:26px 0 8px}
.prose p{margin-bottom:14px}
.prose ul{margin:0 0 14px}

/* Footer */
.site-footer{background:var(--bg-2);border-top:1px solid var(--border);padding:48px 0 32px;margin-top:40px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:32px}
.site-footer h4{color:#f3f6f9;font-size:.95rem;margin-bottom:12px}
.site-footer ul{list-style:none;padding:0}
.site-footer li{margin:8px 0}
.site-footer a{color:var(--muted)}
.disclaimer{margin-top:32px;padding-top:20px;border-top:1px solid var(--border);font-size:.85rem;color:var(--muted)}

/* Responsive */
@media (max-width:900px){
  .hero-grid,.grid-3,.grid-2,.foot-grid{grid-template-columns:1fr}
  .hero{padding:56px 0 40px}
  section.block{padding:56px 0}
}
@media (max-width:760px){
  .nav-toggle{display:inline-flex;background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:8px 12px;font:inherit;cursor:pointer}
  .primary-nav{display:none;position:absolute;top:68px;left:0;right:0;flex-direction:column;align-items:stretch;background:var(--bg-2);border-bottom:1px solid var(--border);padding:12px 16px}
  .primary-nav.open{display:flex}
  .nav-row .btn{display:none}
  .btn-row .btn{flex:1 1 100%}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

/* Widgets */
.widget{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);max-width:460px;width:100%;justify-self:end}
.widget-wrap{max-width:560px}
.w-tabs{display:flex;gap:6px;background:var(--bg-2);border-radius:10px;padding:4px;margin-bottom:18px}
.w-tab{flex:1;background:none;border:0;color:var(--muted);font:inherit;font-weight:600;padding:9px 10px;border-radius:8px;cursor:pointer}
.w-tab.active,.w-tab[aria-selected="true"]{background:var(--surface-2);color:var(--text)}
.w-panel[hidden]{display:none}
.w-label{display:block;font-size:.85rem;color:var(--muted);margin:14px 0 6px}
.w-input{width:100%;background:var(--bg-2);color:var(--text);border:1px solid var(--border);border-radius:10px;padding:12px 14px;font:inherit;font-size:1rem}
.w-input:focus{outline:2px solid var(--focus);outline-offset:1px}
.w-input[readonly]{color:var(--muted)}
.w-note{font-size:.82rem;color:var(--muted);margin:12px 0 16px}
.w-apy{display:flex;justify-content:space-between;align-items:center;background:var(--bg-2);border-radius:10px;padding:14px 16px;margin-bottom:4px}
.w-apy span{color:var(--muted)}
.w-apy strong{font-size:1.4rem;color:var(--accent-strong)}
.w-result{display:flex;justify-content:space-between;align-items:center;margin-top:14px;padding:12px 14px;border:1px dashed var(--border);border-radius:10px}
.w-result span{color:var(--muted)}
.w-result strong{color:var(--text)}
.widget .btn{width:100%}
.widget .slip-row{display:flex;gap:8px}
.slip-btn{flex:1;background:var(--bg-2);border:1px solid var(--border);color:var(--muted);border-radius:8px;padding:8px;font:inherit;cursor:pointer}
.slip-btn[aria-pressed="true"]{border-color:var(--accent);color:var(--accent-strong)}
.w-msg{font-size:.85rem;color:var(--warm);margin-top:10px;min-height:1.2em}
@media (max-width:900px){.widget{justify-self:stretch;max-width:none}}