/* TubeBoost Partner — shared light trustworthy theme */
:root{
  --bg:#ffffff; --bg2:#f6f8fc; --card:#ffffff; --border:#e3e8f0;
  --text:#0f1b2d; --muted:#5b6b82; --blue:#0b57d0; --blue2:#0842a0;
  --green:#0a9b4a; --red:#ff0033; --radius:16px;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Inter',system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}
h1,h2,h3{line-height:1.2;letter-spacing:-.3px}
a{color:inherit;text-decoration:none}
.container{max-width:1120px;margin:0 auto;padding:0 24px}
nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:66px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px}
.logo-mark{width:34px;height:34px;background:#0f1b2d;color:#fff;border-radius:9px;display:grid;place-items:center;font-size:16px}
.nav-links{display:flex;gap:26px;color:var(--muted);font-size:15px;font-weight:500}
.nav-links a:hover,.nav-links a.active{color:var(--text)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-weight:700;border-radius:12px;padding:13px 24px;border:0;cursor:pointer;font-size:15px;transition:.15s}
.btn-blue{background:var(--blue);color:#fff}
.btn-blue:hover{background:var(--blue2);transform:translateY(-1px)}
.btn-outline{border:1px solid var(--border);background:#fff;color:var(--text)}
.btn-outline:hover{border-color:#c3ccd9}
.btn-ghost{background:#0f1b2d;color:#fff}
.badge{display:inline-flex;align-items:center;gap:8px;background:#eef4ff;border:1px solid #d6e4ff;border-radius:100px;padding:7px 14px;font-size:13px;font-weight:600;color:#0b57d0}
.hero{padding:72px 0 48px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero h1{font-size:46px;font-weight:800}
.hero h1 span{color:var(--blue)}
.lead{color:var(--muted);font-size:18px;margin:18px 0 26px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.trust{display:flex;gap:28px;margin-top:26px;font-size:14px;color:var(--muted)}
.trust b{color:var(--text);font-size:20px;display:block}
.gbtn{display:inline-flex;align-items:center;gap:12px;background:#fff;border:1px solid #dadce0;color:#1f1f1f;font-weight:600;padding:13px 24px;border-radius:12px;font-size:15px;cursor:pointer;box-shadow:0 1px 3px rgba(0,0,0,.08)}
.gbtn:hover{box-shadow:0 4px 16px rgba(0,0,0,.12);transform:translateY(-1px)}
.cardbox{background:var(--card);border:1px solid var(--border);border-radius:20px;padding:24px;box-shadow:0 20px 60px rgba(15,27,45,.08)}
.dash-head{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#0b57d0,#00b0ff);color:#fff;display:grid;place-items:center;font-weight:800}
.verified{background:#e6f6ec;color:var(--green);font-size:12px;font-weight:800;border-radius:100px;padding:4px 10px}
.balance{background:var(--bg2);border:1px solid var(--border);border-radius:14px;padding:16px;margin:12px 0}
.balance small{color:var(--muted)}.balance .sum{font-size:30px;font-weight:800}
.row{display:flex;gap:10px}.stat{flex:1;background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:12px;text-align:center}
.stat b{font-size:17px;display:block}.stat span{font-size:12px;color:var(--muted)}
.payout{background:var(--green);color:#fff;border-radius:12px;padding:13px;font-weight:700;text-align:center;margin-top:12px}
.logos{padding:22px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);display:flex;gap:32px;justify-content:center;flex-wrap:wrap;color:#8a97ab;font-weight:700;font-size:13px;letter-spacing:1px}
section{padding:64px 0}
.sec-head{max-width:680px;margin-bottom:32px}
.sec-head h2{font-size:32px;margin-bottom:10px}
.sec-head p{color:var(--muted);font-size:17px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px}
.card h3{font-size:17px;margin:12px 0 8px}
.card p{color:var(--muted);font-size:14.5px}
.icon{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;font-size:22px;background:#eef2f8}
.calc{background:var(--bg2);border:1px solid var(--border);border-radius:20px;padding:32px;display:grid;grid-template-columns:1fr 1fr;gap:28px}
input[type=range]{width:100%;accent-color:var(--blue);height:30px}
.calc-out{background:#0f1b2d;border-radius:16px;padding:26px;color:#fff;text-align:center}
.calc-out .n{font-size:44px;font-weight:800}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.step{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px}
.step .num{color:var(--blue);font-weight:800;font-size:13px;letter-spacing:1px}
.rev{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px}
.faq{max-width:760px;margin:0 auto}
.faq details{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:16px 20px;margin-bottom:10px}
.faq summary{font-weight:700;cursor:pointer}
.faq p{color:var(--muted);margin-top:8px;font-size:15px}
.final{background:#0f1b2d;border-radius:24px;padding:52px;text-align:center;color:#fff;margin:16px 0 36px}
.final p{opacity:.75;margin-bottom:24px}
footer{border-top:1px solid var(--border);padding:26px 0;color:var(--muted);font-size:13px}
.foot-grid{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.foot-grid a:hover{color:var(--text)}
table.plain{width:100%;border-collapse:collapse;font-size:15px}
table.plain th,table.plain td{border:1px solid var(--border);padding:12px 14px;text-align:left}
table.plain th{background:var(--bg2)}
.note{background:#fff8e6;border:1px solid #f0d48a;border-radius:12px;padding:14px 16px;font-size:14px;color:#6b5410;margin-top:16px}
@media(max-width:900px){.hero-grid,.grid3,.steps,.calc{grid-template-columns:1fr}.hero h1{font-size:34px}.nav-links{display:none}}
/* AUTH MODAL (iframe → auth.html) */
.tb-modal{position:fixed;inset:0;z-index:200;display:none}
.tb-modal.open{display:block}
.tb-modal-backdrop{position:absolute;inset:0;background:rgba(10,15,25,.6);backdrop-filter:blur(3px)}
.tb-modal-box{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:min(520px,94vw);height:min(640px,92vh);background:#fff;border-radius:16px;overflow:hidden;box-shadow:0 20px 60px rgba(0,0,0,.4);display:flex;flex-direction:column}
.tb-urlbar{flex:0 0 36px;height:36px;display:flex;align-items:center;gap:7px;background:#f1f3f4;border-bottom:1px solid #dadce0;padding:0 6px 0 12px;font-family:Roboto,Arial,sans-serif;font-size:12px;line-height:1;user-select:none}
.tb-lock{display:inline-flex;flex:0 0 auto}
.tb-url-text{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:#5f6368;cursor:default}
.tb-url-text b{color:#202124;font-weight:500}
.tb-modal-close{flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:0;background:transparent;color:#5f6368;font-size:13px;cursor:pointer;line-height:1}
.tb-modal-close:hover{background:#dadce0}
#tb-auth-frame{flex:1;width:100%;border:0;background:#fff;min-height:0}
@media(max-width:600px){.tb-modal-box{width:96vw;height:92vh;border-radius:14px}}