:root{
  --text:#2f3035; --muted:#7a7c84; --glass:rgba(255,255,255,.64);
  --glass-strong:rgba(255,255,255,.82); --line:rgba(255,255,255,.58);
  --shadow:0 18px 50px rgba(36,37,42,.10); --lime:#d2e66f;
  --lav:#c2b9ed; --charcoal:#4b4c51; --radius:28px;
}
*{box-sizing:border-box} html{scroll-behavior:smooth}
body{
  margin:0; min-height:100vh; color:var(--text);
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:
    radial-gradient(58rem 38rem at 14% 106%,rgba(210,230,111,.18),transparent 62%),
    radial-gradient(48rem 32rem at 92% 102%,rgba(194,185,237,.20),transparent 64%),
    linear-gradient(180deg,#d9dade 0%,#e4e5e8 47%,#ececef 100%);
  background-attachment:fixed;
}
a{color:inherit} button{font:inherit}
.shell{width:min(1180px,calc(100% - 40px));margin:0 auto}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:26px 0 14px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand-icon{width:46px;height:46px;border-radius:16px;display:grid;place-items:center;background:var(--glass-strong);border:1px solid var(--line);box-shadow:0 10px 30px rgba(36,37,42,.08);overflow:hidden}
.brand-icon img{width:100%;height:100%;object-fit:cover}
.brand-copy{display:flex;flex-direction:column;gap:2px}
.brand-copy strong{font-size:14px;letter-spacing:-.02em}
.brand-copy span{font-size:11px;color:var(--muted)}
.nav{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.nav a,.theme-toggle{min-height:38px;padding:0 13px;border-radius:12px;border:1px solid var(--line);background:var(--glass);color:var(--text);text-decoration:none;font-size:11px;font-weight:750;cursor:pointer;backdrop-filter:blur(18px)}
.nav a{display:flex;align-items:center}
.nav a:hover,.theme-toggle:hover{background:var(--glass-strong)}
.hero{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(300px,.65fr);gap:18px;align-items:stretch;padding:40px 0 18px}
.card{background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);backdrop-filter:blur(24px) saturate(1.08)}
.hero-main{padding:38px 42px;position:relative;overflow:hidden;min-height:390px}
.hero-main:after{content:"";position:absolute;width:280px;height:280px;border-radius:50%;right:-80px;bottom:-110px;background:radial-gradient(circle at 35% 35%,rgba(255,255,255,.6),rgba(194,185,237,.24) 58%,transparent 70%);filter:blur(3px)}
.eyebrow{font-size:10px;font-weight:900;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
h1{margin:12px 0 18px;max-width:720px;font-size:clamp(40px,5.1vw,66px);line-height:1.01;letter-spacing:-.052em;font-weight:760}
.lead{max-width:700px;margin:0 0 28px;color:var(--muted);font-size:17px;line-height:1.62}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap}
.button{min-height:44px;padding:0 16px;border-radius:14px;border:0;display:inline-flex;align-items:center;justify-content:center;text-decoration:none;font-size:11px;font-weight:850}
.button.primary{background:var(--charcoal);color:#fff}
.button.secondary{background:var(--glass-strong);border:1px solid var(--line)}
.hero-side{padding:20px;display:flex;flex-direction:column;gap:12px}
.mini-card{flex:1;min-height:112px;padding:18px;border-radius:20px;background:var(--glass-strong);border:1px solid var(--line)}
.mini-card.lime{background:color-mix(in srgb,var(--lime) 68%, white)}
.mini-card.lav{background:color-mix(in srgb,var(--lav) 67%, white)}
.mini-card strong{display:block;font-size:14px;margin:6px 0 5px}
.mini-card span{display:block;font-size:12px;line-height:1.5;color:var(--muted)}
.section{padding:14px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin:10px 0 14px}
.section-head h2{margin:4px 0 0;font-size:30px;letter-spacing:-.045em}
.section-head p{margin:0;max-width:620px;color:var(--muted);font-size:14px;line-height:1.6}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.feature{min-height:210px;padding:22px}
.feature-icon{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;background:var(--glass-strong);border:1px solid var(--line);font-size:18px}
.feature h3{font-size:17px;margin:28px 0 8px;letter-spacing:-.025em}
.feature p{font-size:13px;line-height:1.6;color:var(--muted);margin:0}
.feature:nth-child(2){background:color-mix(in srgb,var(--lav) 30%,var(--glass))}
.feature:nth-child(3){background:color-mix(in srgb,var(--lime) 28%,var(--glass))}
.security{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.security .card{padding:24px}
.security h3{font-size:20px;margin:0 0 10px}
.security p,.security li{font-size:13px;line-height:1.65;color:var(--muted)}
.security ul{padding-left:18px;margin:8px 0 0}
.notice{margin:22px 0 0;padding:16px 18px;border-radius:18px;background:rgba(255,255,255,.42);border:1px dashed rgba(70,70,75,.16);font-size:12px;line-height:1.55;color:var(--muted)}
.footer{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:36px 0 34px;color:var(--muted);font-size:11px}
.footer a{text-decoration:none}
.privacy-page{padding:32px 0 56px}
.privacy-wrap{max-width:900px;margin:0 auto;padding:32px}
.privacy-wrap h1{font-size:clamp(38px,6vw,68px);margin-top:10px}
.privacy-wrap h2{margin:28px 0 9px;font-size:19px;letter-spacing:-.025em}
.privacy-wrap p,.privacy-wrap li{color:var(--muted);font-size:14px;line-height:1.72}
.privacy-wrap ul{padding-left:20px}
.privacy-meta{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0 24px}
.pill{padding:7px 10px;border-radius:999px;background:var(--glass-strong);border:1px solid var(--line);font-size:11px;font-weight:800;color:var(--muted)}
code{padding:2px 6px;border-radius:7px;background:rgba(0,0,0,.05);font-size:.92em}
@media(max-width:860px){.hero{grid-template-columns:1fr}.grid-3{grid-template-columns:1fr}.security{grid-template-columns:1fr}.hero-main{min-height:auto;padding:30px}}
@media(max-width:620px){.shell{width:min(100% - 24px,1180px)}.topbar{align-items:flex-start}.brand-copy span{display:none}.nav{justify-content:flex-end}h1{font-size:48px}.hero{padding-top:24px}.hero-main{padding:24px}.privacy-wrap{padding:22px}}


/* ============================================================
   V3 — English official OAuth site
   ============================================================ */

.owner-section{
  padding:14px 0 4px;
}
.owner-card{
  display:grid;
  grid-template-columns:180px minmax(0,1fr);
  gap:26px;
  align-items:center;
  padding:24px;
}
.owner-photo{
  width:180px;
  aspect-ratio:1;
  object-fit:cover;
  border-radius:24px;
  border:1px solid rgba(255,255,255,.72);
  box-shadow:0 14px 34px rgba(40,40,45,.12);
}
.owner-copy h2{
  margin:6px 0 6px;
  font-size:30px;
  letter-spacing:-.04em;
}
.owner-role{
  color:var(--muted);
  font-size:13px;
  margin:0 0 18px;
}
.owner-links{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}
.owner-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:40px;
  padding:0 13px;
  border-radius:12px;
  background:var(--glass-strong);
  border:1px solid var(--line);
  text-decoration:none;
  font-size:12px;
  font-weight:750;
}
.owner-link:hover{
  transform:translateY(-1px);
  box-shadow:0 8px 18px rgba(35,35,40,.08);
}
.legal-intro{
  font-size:15px !important;
  line-height:1.7 !important;
}
.legal-highlight{
  padding:18px;
  margin:20px 0;
  border-radius:16px;
  background:rgba(210,230,111,.18);
  border:1px solid rgba(160,180,82,.18);
}
.legal-contact{
  margin-top:24px;
  padding:18px;
  border-radius:16px;
  background:rgba(194,185,237,.14);
  border:1px solid rgba(160,150,215,.18);
}
.nav a.active{
  background:var(--charcoal);
  color:white;
}
@media(max-width:700px){
  .owner-card{grid-template-columns:1fr}
  .owner-photo{width:140px}
}