:root {
  --sf-page: #f8fafc;
  --sf-surface: #ffffff;
  --sf-surface-muted: #f1f0fe;
  --sf-ink: #1e1b4b;
  --sf-body: #374151;
  --sf-muted: #6b7280;
  --sf-primary: #4f46e5;
  --sf-primary-deep: #3730a3;
  --sf-violet: #7c3aed;
  --sf-mint: #10b981;
  --sf-danger: #dc2626;
  --sf-border: #e5e7eb;
  --sf-shadow: 0 3px 14px rgba(30, 27, 75, 0.08);
}

[data-bs-theme="dark"] {
  --sf-page: #0b1220;
  --sf-surface: #141d33;
  --sf-surface-muted: #0f1830;
  --sf-ink: rgba(248, 250, 252, 0.94);
  --sf-body: rgba(248, 250, 252, 0.88);
  --sf-muted: rgba(248, 250, 252, 0.52);
  --sf-primary: #818cf8;
  --sf-violet: #a78bfa;
  --sf-mint: #34d399;
  --sf-danger: #f87171;
  --sf-border: rgba(255, 255, 255, 0.08);
  --sf-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
}

html { scroll-behavior: smooth; }
body { background: var(--sf-page); color: var(--sf-body); font-family: "Inter", sans-serif; }
a { color: var(--sf-primary); }
h1, h2, h3, h4, h5 { color: var(--sf-ink); font-weight: 800; letter-spacing: 0; }
.navbar { background: color-mix(in srgb, var(--sf-page) 94%, transparent); border-bottom: 1px solid var(--sf-border); backdrop-filter: blur(12px); }
.navbar-brand .logo { width: 238px; height: 38px; object-fit: contain; object-position: left center; }
.logo-dark { display: none; }
[data-bs-theme="dark"] .logo-light { display: none; }
[data-bs-theme="dark"] .logo-dark { display: block; }
.nav-link { color: var(--sf-body); font-weight: 600; border-radius: 8px; padding: .55rem .8rem !important; }
.nav-link:hover, .nav-link.active { color: var(--sf-primary); background: var(--sf-surface-muted); }
.theme-toggle { width: 42px; height: 42px; border: 1px solid var(--sf-border); border-radius: 50%; color: var(--sf-ink); background: var(--sf-surface); font-size: 1.15rem; }

.hero { background: linear-gradient(150deg, #1e1b4b 0%, #4338ca 55%, #6d28d9 100%); color: #fff; padding: 4.5rem 0 5.5rem; position: relative; overflow: hidden; }
.hero::after { content: ""; position: absolute; width: 520px; height: 520px; right: -180px; top: -240px; border: 1px solid rgba(255,255,255,.13); border-radius: 50%; box-shadow: 0 0 0 80px rgba(255,255,255,.035), 0 0 0 160px rgba(16,185,129,.05); }
.hero .container { position: relative; z-index: 1; }
.hero h1 { color: #fff; font-size: clamp(2.35rem, 5vw, 4.7rem); line-height: 1.02; max-width: 760px; }
.hero-copy { color: rgba(255,255,255,.82); font-size: 1.13rem; max-width: 640px; }
.eyebrow { display: inline-flex; align-items: center; gap: .5rem; color: #6ee7b7; font-size: .82rem; font-weight: 800; text-transform: uppercase; margin-bottom: 1.1rem; }
.eyebrow::before { content: ""; width: 26px; height: 3px; border-radius: 3px; background: #34d399; }
.hero-stats { display: flex; gap: 2rem; margin-top: 2rem; flex-wrap: wrap; }
.hero-stat strong { display: block; color: #fff; font-size: 1.5rem; }
.hero-stat span { color: rgba(255,255,255,.64); font-size: .84rem; }

.quiz-wrap { margin-top: -3rem; position: relative; z-index: 2; }
.quiz-card { background: var(--sf-surface); border: 1px solid var(--sf-border); border-radius: 24px; box-shadow: 0 18px 50px rgba(30,27,75,.18); padding: clamp(1.25rem, 4vw, 2.2rem); max-width: 820px; margin: auto; }
.progress-track { height: 7px; background: var(--sf-surface-muted); border-radius: 100px; overflow: hidden; }
.progress-bar { height: 100%; width: 33.333%; background: var(--sf-mint); transition: width .25s ease; }
.step-kicker { color: var(--sf-primary); text-transform: uppercase; font-size: .75rem; font-weight: 800; margin-top: 1.5rem; }
.quiz-step[hidden] { display: none; }
.form-control, .form-select { min-height: 50px; border-radius: 10px; border-color: var(--sf-border); background-color: var(--sf-page); color: var(--sf-body); }
.form-control:focus, .form-select:focus { border-color: var(--sf-primary); box-shadow: 0 0 0 .2rem color-mix(in srgb, var(--sf-primary) 20%, transparent); }
.hp-field { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.btn-sf, .btn-mint { border: 0; border-radius: 100px; font-weight: 800; min-height: 48px; padding: .72rem 1.4rem; }
.btn-sf { color: #fff; background: var(--sf-primary); }
.btn-sf:hover { color: #fff; background: var(--sf-primary-deep); }
.btn-mint { color: #08281d; background: var(--sf-mint); }
.btn-mint:hover { color: #08281d; filter: brightness(.92); }
.btn-back { color: var(--sf-muted); background: transparent; border: 0; font-weight: 700; padding: .7rem; }
.form-status { min-height: 24px; color: var(--sf-danger); font-weight: 600; }

.section { padding: 5rem 0; }
.section-muted { background: var(--sf-surface-muted); }
.section-heading { max-width: 680px; margin-bottom: 2.4rem; }
.section-heading p { color: var(--sf-muted); }
.feature-grid, .offer-grid, .winner-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.2rem; }
.info-card, .offer-card, .winner-card { background: var(--sf-surface); border: 1px solid var(--sf-border); border-radius: 18px; box-shadow: var(--sf-shadow); padding: 1.5rem; }
.icon-tile { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 14px; color: var(--sf-primary); background: var(--sf-surface-muted); font-size: 1.35rem; font-weight: 800; margin-bottom: 1.2rem; }
.offer-card { display: flex; flex-direction: column; min-height: 340px; }
.offer-card .offer-meta { color: var(--sf-mint); font-weight: 800; font-size: .8rem; text-transform: uppercase; }
.offer-card ul { padding-left: 1.1rem; flex: 1; }
.offer-card li { margin-bottom: .65rem; }
.offer-card .btn-sf { align-self: flex-start; }
.winner-card strong { color: var(--sf-ink); }
.winner-card small { color: var(--sf-muted); }
.goal-chip { display: inline-block; margin-top: 1rem; padding: .35rem .7rem; border-radius: 100px; color: #047857; background: #d1fae5; font-size: .75rem; font-weight: 700; }
[data-bs-theme="dark"] .goal-chip { color: #6ee7b7; background: rgba(52,211,153,.12); }

.page-hero { padding: 4.5rem 0 4rem; background: linear-gradient(150deg, #1e1b4b, #4338ca 58%, #6d28d9); color: white; }
.page-hero h1 { color: white; max-width: 820px; }
.page-hero p { color: rgba(255,255,255,.78); max-width: 680px; font-size: 1.08rem; }
.content-shell { max-width: 860px; }
.content-shell h2 { margin-top: 2.4rem; font-size: 1.5rem; }
.content-shell li { margin-bottom: .6rem; }
.notice { border-left: 4px solid var(--sf-mint); background: var(--sf-surface-muted); padding: 1rem 1.2rem; border-radius: 0 10px 10px 0; }
.accordion-item { background: var(--sf-surface); color: var(--sf-body); border-color: var(--sf-border); }
.accordion-button { background: var(--sf-surface); color: var(--sf-ink); font-weight: 700; }
.accordion-button:not(.collapsed) { color: var(--sf-primary); background: var(--sf-surface-muted); }

.gate-page { min-height: 76vh; display: grid; place-items: center; padding: 4rem 1rem; background: linear-gradient(150deg, #1e1b4b, #4338ca 55%, #6d28d9); }
.gate-card { width: min(520px, 100%); text-align: center; background: var(--sf-surface); border-radius: 24px; padding: 2.5rem; box-shadow: 0 18px 50px rgba(0,0,0,.25); }
.gate-card img { max-width: 250px; }

.site-footer { background: #1e1b4b; color: rgba(255,255,255,.7); padding: 3.5rem 0 1.5rem; }
.footer-grid { display: grid; grid-template-columns: 1fr auto; gap: 2rem; align-items: start; }
.footer-links { display: flex; gap: 1.2rem; flex-wrap: wrap; }
.site-footer a { color: #c4b5fd; }
.disclosure { margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,.13); font-size: .82rem; }
.copyright { margin-top: 1rem; color: rgba(255,255,255,.42); font-size: .78rem; }

@media (max-width: 991px) {
  .navbar-brand .logo { width: 205px; }
  .feature-grid, .offer-grid, .winner-grid { grid-template-columns: 1fr; }
  .offer-card { min-height: 0; }
}
@media (max-width: 575px) {
  .hero { padding: 3.25rem 0 5rem; }
  .hero h1 { font-size: 2.45rem; }
  .hero-stats { gap: 1.25rem; }
  .quiz-card { border-radius: 18px; }
  .section { padding: 3.5rem 0; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-links { flex-direction: column; gap: .6rem; }
}