:root{
  --ink:#172345;
  --ink-soft:#4b5c86;
  --ink-faint:#7a86a7;
  --line:#dde3f0;
  --bg:#f5f7fb;
  --card:#ffffff;
  --grad:linear-gradient(90deg,#3da5ff 0%,#6b35ff 100%);
  --shadow:0 18px 42px rgba(24,35,69,.08);
  --shadow-soft:0 10px 24px rgba(24,35,69,.05);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,sans-serif;background:var(--bg);color:var(--ink)}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
.container{width:min(1180px,calc(100% - 40px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.header-wrap{display:flex;align-items:center;gap:24px;min-height:118px}
.brand img{height:88px;width:auto}
.main-nav{display:flex;gap:28px;margin-left:auto}
.main-nav a{font-weight:600}
.lang-switch{display:flex;gap:8px;align-items:center}
.lang-btn{border:1px solid var(--line);background:#fff;padding:8px 10px;border-radius:10px;cursor:pointer;font-weight:700}
.lang-btn.active{background:#eef3ff;color:#2d46b9}
.menu-toggle{display:none;background:none;border:none;font-size:28px;margin-left:auto;cursor:pointer}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 22px;border-radius:14px;font-weight:700;border:1px solid transparent;cursor:pointer;transition:.18s ease}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--shadow)}
.btn-secondary{background:#fff;border-color:#c7d1ec;color:var(--ink)}
.btn-small{padding:11px 16px}
.kicker{text-transform:uppercase;letter-spacing:.18em;font-size:.82rem;font-weight:700;color:#6270a6;margin:0 0 18px}
.kicker:after{content:'';display:block;width:84px;height:3px;background:var(--grad);border-radius:99px;margin-top:10px}
h1,h2,h3{font-family:Georgia,serif;color:var(--ink);margin:0}
h1{font-size:58px;line-height:.95;margin-bottom:16px}
h2{font-size:40px;line-height:1;margin-bottom:14px}
h3{font-size:26px}
.subhead{font-family:Georgia,serif;color:#4e45c9;font-size:30px;margin:0 0 18px}
.lead,.card p,.split p,.small,.timeline-card p{line-height:1.75;color:var(--ink-soft)}
.hero{padding:74px 0 52px;background:radial-gradient(circle at top right,rgba(61,165,255,.10),transparent 32%),#f7f9fd}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:42px;align-items:center}
.hero-card,.card,.venue-panel,.timeline-card,.preview-card,.team-card,.stat-card,.quote-panel,.rsvp-panel{background:#fff;border:1px solid var(--line);border-radius:26px;box-shadow:var(--shadow)}
.hero-card{padding:24px;position:relative}
.hero-badge{position:absolute;right:24px;top:18px;background:rgba(255,255,255,.88);border:1px solid var(--line);padding:10px 14px;border-radius:999px;font-weight:700}
.hero-image{width:100%;max-height:700px;object-fit:contain}
.section{padding:62px 0}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.cards-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.card,.team-card,.stat-card,.rsvp-panel{padding:24px}
.split{display:grid;grid-template-columns:1fr .95fr;gap:28px;align-items:center}
.tag{display:inline-flex;padding:8px 12px;border-radius:999px;background:#eef3ff;color:#4656a1;font-size:.84rem;font-weight:700}
.list-clean{margin:18px 0 0;padding-left:18px;line-height:1.75;color:var(--ink-soft)}
.preview-card{overflow:hidden}
.preview-media{height:280px;background:#eef2fb}
.preview-media img{width:100%;height:100%;object-fit:cover}
.preview-copy{padding:22px}
.preview-dark{background:#121a33}
.preview-dark .preview-copy h3,.preview-dark .preview-copy p{color:#fff}
.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.timeline-card{padding:24px;min-height:170px}
.timeline-number{display:inline-flex;width:48px;height:48px;border-radius:50%;align-items:center;justify-content:center;background:#eef4ff;border:1px solid #cfd8fb;color:#4d41d8;font-weight:800;margin-bottom:16px}
.footer{padding:28px 0;border-top:1px solid var(--line);background:#fff}
.footer-grid{display:grid;grid-template-columns:.9fr 1fr 1fr;gap:18px;align-items:center}
.footer-logo{height:42px}
.inline-link{color:#3459e6;font-weight:700}
.note{color:var(--ink-soft)}
.contact-list{list-style:none;padding:0;margin:16px 0;display:grid;gap:12px}
.rsvp-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:22px}
.direct-actions{display:grid;gap:14px;margin-top:22px}
[data-lang]{display:none}
[data-lang].active{display:block}

/* Premium landing */
.premium-shell{background:
 radial-gradient(circle at 18% 14%, rgba(94,133,255,.10), transparent 28%),
 radial-gradient(circle at 86% 12%, rgba(89,212,255,.10), transparent 22%),
 linear-gradient(180deg,#f8faff 0%,#f3f6fb 100%)}
.premium-hero{padding:88px 0 48px}
.premium-hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:46px;align-items:center}
.premium-overline{font-size:.8rem;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:#5f6b95;margin:0 0 18px}
.premium-title{font-family:Georgia,serif;font-size:72px;line-height:.92;letter-spacing:-.03em;margin:0 0 18px}
.premium-sub{font-family:Georgia,serif;font-size:30px;line-height:1.1;color:#4d45c7;margin:0 0 22px}
.premium-meta{display:flex;flex-wrap:wrap;gap:10px 16px;color:#5a6891;font-weight:600;margin-bottom:24px}
.premium-meta span:not(:last-child):after{content:'·';margin-left:16px;color:#98a5c8}
.premium-intro{font-size:1.08rem;line-height:1.85;color:var(--ink-soft);max-width:720px}
.premium-cta-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
.premium-visual{position:relative}
.premium-visual-card{background:linear-gradient(180deg,#fff,#fdfefe);border:1px solid var(--line);border-radius:30px;box-shadow:0 24px 56px rgba(24,35,69,.09);padding:28px;position:relative;overflow:hidden}
.premium-visual-card:before{content:'';position:absolute;right:-80px;top:-80px;width:280px;height:280px;background:radial-gradient(circle,rgba(61,165,255,.14),transparent 70%)}
.premium-robot-label{position:absolute;right:26px;top:22px;background:rgba(255,255,255,.92);border:1px solid var(--line);padding:10px 16px;border-radius:999px;font-weight:700}
.premium-image{width:100%;max-height:720px;object-fit:contain}
.premium-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:24px}
.stat-card{padding:18px 18px 16px}
.stat-label{font-size:.78rem;text-transform:uppercase;letter-spacing:.12em;color:#6a7598;font-weight:700;margin-bottom:10px}
.stat-value{font-size:1.02rem;font-weight:700;color:var(--ink)}
.quote-panel{padding:34px}
.quote-text{font-family:Georgia,serif;font-size:34px;line-height:1.12;letter-spacing:-.02em;margin:0 0 14px}
.section-head{display:grid;grid-template-columns:1fr .82fr;gap:26px;align-items:end;margin-bottom:24px}
.section-copy{color:var(--ink-soft);line-height:1.8}
.program-list{display:grid;gap:14px}
.program-row{display:grid;grid-template-columns:70px 1fr;gap:16px;align-items:start;padding:18px 0;border-top:1px solid var(--line)}
.program-row:first-child{border-top:none}
.program-no{font-family:Georgia,serif;font-size:34px;color:#4855d3;line-height:1}
.program-title{font-weight:700;color:var(--ink);margin-bottom:4px}
.program-text{color:var(--ink-soft);line-height:1.7}
.logo-pair{display:flex;gap:18px;align-items:center;flex-wrap:wrap}
.logo-pair img{height:44px;width:auto}
.rsvp-premium{display:grid;grid-template-columns:.92fr 1.08fr;gap:22px}
.rsvp-box{background:#fff;border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow);padding:28px}
.qr-row{display:grid;grid-template-columns:200px 1fr;gap:22px;align-items:center}
.qr-card{padding:14px;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:var(--shadow-soft)}
.minor{font-size:.95rem;color:var(--ink-faint)}
.thin-divider{height:1px;background:var(--line);margin:18px 0}
@media (max-width:1024px){
  .hero-grid,.split,.rsvp-grid,.footer-grid,.premium-hero-grid,.section-head,.rsvp-premium{grid-template-columns:1fr}
  .grid-3,.grid-4,.timeline,.cards-2,.premium-stats{grid-template-columns:repeat(2,1fr)}
  .main-nav{display:none}
  .menu-toggle{display:block}
  .btn-small{display:none}
  .premium-title{font-size:52px}
  .premium-sub{font-size:24px}
}
@media (max-width:680px){
  .container{width:min(100% - 28px,1180px)}
  .grid-3,.grid-4,.timeline,.cards-2,.premium-stats{grid-template-columns:1fr}
  h1{font-size:42px}
  .subhead{font-size:24px}
  .header-wrap{min-height:92px}
  .brand img{height:64px}
  .lang-switch{display:none}
  .premium-title{font-size:40px}
  .qr-row{grid-template-columns:1fr}
}