:root {
  --bg: #070b16;
  --bg-2: #0c1326;
  --panel: #0f172d;
  --line: rgba(203, 213, 225, 0.12);
  --line-2: rgba(203, 213, 225, 0.22);
  --text: #e8edf5;
  --muted: #94a3b8;
  --blue: #2f6bff;
  --blue-2: #1d4ed8;
  --blue-glow: rgba(47, 107, 255, 0.35);
  --silver: linear-gradient(180deg, #ffffff 0%, #d7dde6 45%, #8f9aaa 100%);
  --radius: 16px;
  --font: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; flex: none; }
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 .5em; letter-spacing: -0.01em; }
p { margin: 0 0 1em; }
.wrap { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 980px; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.center { text-align: center; }
.h2 { font-size: 1.6rem; }

/* Nav */
.nav { position: sticky; top: 0; z-index: 20; background: rgba(7, 11, 22, .78); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
.nav-in { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { border-radius: 8px; }
.brand-text { font-weight: 700; letter-spacing: .28em; font-size: .9rem; background: var(--silver); -webkit-background-clip: text; background-clip: text; color: transparent; }
.brand-text b { margin-left: .5em; color: var(--blue); -webkit-text-fill-color: var(--blue); }
.nav-link { color: var(--muted); font-size: .9rem; }
.nav-link:hover { color: var(--text); }

/* Hero */
.hero { position: relative; overflow: hidden; padding: 72px 0 56px; border-bottom: 1px solid var(--line); }
.hero::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(600px 300px at 85% 10%, var(--blue-glow), transparent 70%),
    radial-gradient(500px 260px at 10% 100%, rgba(203, 213, 225, .10), transparent 70%),
    linear-gradient(115deg, transparent 55%, rgba(47, 107, 255, .10) 55%, rgba(47, 107, 255, .10) 62%, transparent 62%),
    linear-gradient(115deg, transparent 40%, rgba(203, 213, 225, .05) 40%, rgba(203, 213, 225, .05) 50%, transparent 50%);
}
.hero .wrap { position: relative; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.4rem); max-width: 820px; font-weight: 800; }
.lead { font-size: 1.15rem; color: #c3cddc; max-width: 640px; }
.eyebrow { display: inline-block; font-size: .75rem; letter-spacing: .2em; text-transform: uppercase; color: #8fb0ff; font-weight: 600; margin-bottom: 12px; }
.silver { background: var(--silver); -webkit-background-clip: text; background-clip: text; color: transparent; }
.blue { color: var(--blue); text-shadow: 0 0 30px var(--blue-glow); }
.hero-detail h1 { background: var(--silver); -webkit-background-clip: text; background-clip: text; color: transparent; }
.back { display: table; color: var(--muted); font-size: .9rem; margin-bottom: 18px; }
.back:hover { color: var(--text); }

.meta { list-style: none; padding: 0; margin: 16px 0 0; display: flex; flex-wrap: wrap; gap: 8px 20px; color: #cbd5e1; font-size: .95rem; }
.meta li { display: flex; align-items: center; gap: 8px; }
.meta svg { color: var(--blue); }

.countdown { display: flex; gap: 10px; margin-top: 28px; flex-wrap: wrap; }
.countdown span { display: flex; flex-direction: column; align-items: center; min-width: 72px; padding: 10px 8px; border-radius: 12px; border: 1px solid var(--line-2); background: rgba(15, 23, 45, .7); font-size: .72rem; color: var(--muted); text-transform: uppercase; letter-spacing: .1em; }
.countdown b { font-size: 1.6rem; color: var(--text); letter-spacing: 0; font-variant-numeric: tabular-nums; }

/* Section & cards */
.section { padding: 48px 16px 72px; }
.section-title { font-size: 1.3rem; margin-bottom: 20px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.card {
  position: relative; display: flex; flex-direction: column; padding: 22px; border-radius: var(--radius);
  background: linear-gradient(160deg, #121c36 0%, #0b1224 100%);
  border: 1px solid var(--line); transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.card::before { content: ''; position: absolute; inset: 0 0 auto; height: 3px; border-radius: var(--radius) var(--radius) 0 0; background: linear-gradient(90deg, #cbd5e1, var(--blue)); }
.card:hover { transform: translateY(-4px); border-color: rgba(47, 107, 255, .5); box-shadow: 0 18px 40px -18px var(--blue-glow); }
.card h3 { font-size: 1.3rem; margin-top: 14px; }
.card .meta { font-size: .88rem; flex-direction: column; gap: 6px; margin-bottom: 18px; }
.card-top { display: flex; justify-content: space-between; align-items: flex-start; }
.chip { display: inline-block; font-size: .72rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; padding: 4px 10px; border-radius: 999px; background: rgba(47, 107, 255, .15); color: #9db8ff; border: 1px solid rgba(47, 107, 255, .35); }
.date-badge { display: flex; flex-direction: column; align-items: center; line-height: 1.1; padding: 6px 10px; border-radius: 10px; background: var(--silver); color: #0b1224; font-size: .7rem; text-transform: uppercase; font-weight: 700; }
.date-badge b { font-size: 1.3rem; }
.card-foot { margin-top: auto; display: flex; justify-content: space-between; align-items: center; padding-top: 16px; border-top: 1px solid var(--line); }
.price { font-weight: 800; font-size: 1.15rem; }
.price-wrap { display: flex; flex-direction: column; align-items: flex-start; gap: 4px; }
.was { color: var(--muted); font-weight: 500; font-size: .85em; text-decoration: line-through; text-decoration-color: #f87171; }
.was-lg { color: var(--muted); font-size: .95rem; margin-top: 10px; }
.was-lg s { text-decoration-color: #f87171; text-decoration-thickness: 2px; }
.promo { display: inline-block; font-size: .72rem; font-weight: 700; letter-spacing: .04em; padding: 4px 10px; border-radius: 999px; color: #fff; background: linear-gradient(135deg, #f97316, #ef4444); box-shadow: 0 6px 16px -6px rgba(239, 68, 68, .6); }
.promo-sm { font-size: .62rem; padding: 2px 8px; }
.promo-text { color: #fdba74; font-weight: 600; }
.summary .promo { margin-bottom: 4px; }
.go { display: flex; align-items: center; gap: 6px; color: #8fb0ff; font-weight: 600; font-size: .9rem; }
.empty { color: var(--muted); padding: 40px; text-align: center; border: 1px dashed var(--line-2); border-radius: var(--radius); }

/* Detail */
.detail { display: grid; grid-template-columns: 1fr 340px; gap: 32px; padding-top: 40px; padding-bottom: 72px; align-items: start; }
.block { padding: 28px 0; border-bottom: 1px solid var(--line); }
.block:first-child { padding-top: 0; }
.block h2 { font-size: 1.35rem; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.loop { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; counter-reset: loop; }
.loop li { display: flex; gap: 14px; padding: 16px; border-radius: 12px; background: var(--panel); border: 1px solid var(--line); }
.loop h4 { margin: 0 0 4px; }
.loop p { margin: 0; font-size: .93rem; }
.loop-n { flex: none; width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; font-weight: 800; color: #fff; background: linear-gradient(135deg, var(--blue), var(--blue-2)); box-shadow: 0 6px 18px -6px var(--blue-glow); }
.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.checks li { display: flex; gap: 10px; align-items: flex-start; }
.checks svg { color: var(--blue); margin-top: 3px; }
.facts { margin: 0; display: grid; gap: 4px; }
.facts dt { color: var(--muted); font-size: .82rem; margin-top: 8px; }
.facts dd { margin: 0; }
.instructor { display: flex; gap: 18px; align-items: center; }
.instructor h3 { margin-bottom: 2px; }
.instructor p { margin: 0; }
.avatar { flex: none; width: 72px; height: 72px; border-radius: 50%; display: grid; place-items: center; font-weight: 800; font-size: 1.4rem; color: #0b1224; background: var(--silver); box-shadow: 0 0 0 3px var(--bg), 0 0 0 5px var(--blue); }
.faq details { border: 1px solid var(--line); border-radius: 12px; background: var(--panel); margin-bottom: 10px; }
.faq summary { cursor: pointer; padding: 14px 44px 14px 16px; font-weight: 600; list-style: none; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; position: absolute; right: 16px; top: 10px; font-size: 1.3rem; color: var(--blue); }
.faq details[open] summary::after { content: '–'; }
.faq details p { padding: 0 16px 14px; margin: 0; color: #c3cddc; }

.detail-side { position: sticky; top: 84px; }
.ticket { padding: 24px; border-radius: var(--radius); background: linear-gradient(170deg, #142245 0%, #0d1530 60%); border: 1px solid rgba(47, 107, 255, .35); box-shadow: 0 30px 60px -30px var(--blue-glow); }
.ticket-price { font-size: 2.1rem; font-weight: 800; line-height: 1.1; margin: 4px 0; background: var(--silver); -webkit-background-clip: text; background-clip: text; color: transparent; }
.ticket-list { list-style: none; padding: 0; margin: 18px 0 20px; display: grid; gap: 10px; font-size: .93rem; }
.ticket-list li { display: flex; gap: 10px; align-items: center; }
.ticket-list svg { color: var(--blue); }
.ticket .small.center { margin: 12px 0 0; }
.wa { display: flex; justify-content: center; align-items: center; gap: 8px; margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--line); color: #86efac; font-size: .88rem; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 13px 22px; border-radius: 12px; font-weight: 700; font-size: 1rem; border: 0; cursor: pointer; font-family: inherit; transition: transform .15s ease, box-shadow .15s ease, filter .15s ease; }
.btn-primary { color: #fff; background: linear-gradient(135deg, #3b7bff 0%, var(--blue-2) 100%); box-shadow: 0 10px 24px -10px var(--blue-glow), inset 0 1px 0 rgba(255, 255, 255, .25); }
.btn-primary:hover { transform: translateY(-1px); filter: brightness(1.08); }
.btn-ghost { color: var(--text); background: transparent; border: 1px solid var(--line-2); margin-top: 18px; }
.btn-disabled { color: var(--muted); background: rgba(148, 163, 184, .12); cursor: not-allowed; width: 100%; }
.btn-block { width: 100%; }
.link { background: none; border: 0; color: #8fb0ff; cursor: pointer; padding: 0; font: inherit; font-size: .9rem; text-decoration: underline; }

.sticky-cta { display: none; }

/* Flow pages */
.flow { padding-top: 32px; padding-bottom: 72px; }
.flow-grid { display: grid; grid-template-columns: 1fr 320px; gap: 24px; align-items: start; }
.panel { padding: 28px; border-radius: var(--radius); background: var(--panel); border: 1px solid var(--line); }
.panel-center { max-width: 520px; margin: 0 auto; }
.stepper { list-style: none; padding: 0; margin: 0 0 28px; display: flex; gap: 8px; }
.stepper li { flex: 1; display: flex; align-items: center; gap: 10px; font-size: .9rem; color: var(--muted); padding-bottom: 12px; border-bottom: 3px solid var(--line); }
.stepper li span { width: 28px; height: 28px; flex: none; border-radius: 50%; display: grid; place-items: center; font-weight: 700; font-size: .85rem; border: 1px solid var(--line-2); }
.stepper li span svg { width: 14px; height: 14px; }
.stepper li.on { color: var(--text); border-color: var(--blue); }
.stepper li.on span { background: var(--blue); border-color: var(--blue); color: #fff; }
.stepper li.done { color: #cbd5e1; border-color: #94a3b8; }
.stepper li.done span { background: var(--silver); color: #0b1224; border: 0; }

.field { display: block; margin-bottom: 16px; }
.field > span { display: block; font-size: .88rem; font-weight: 600; margin-bottom: 6px; }
.field input { width: 100%; padding: 13px 14px; border-radius: 10px; font: inherit; color: var(--text); background: #0a1122; border: 1px solid var(--line-2); outline: none; transition: border-color .15s ease, box-shadow .15s ease; }
.field input::placeholder { color: #5b6880; }
.field input:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(47, 107, 255, .25); }
.field small { display: block; margin-top: 6px; font-size: .8rem; }
.field.invalid input { border-color: #f87171; }
.err { color: #fca5a5; }
.alert { padding: 12px 14px; border-radius: 10px; background: rgba(248, 113, 113, .12); border: 1px solid rgba(248, 113, 113, .35); color: #fecaca; margin-bottom: 16px; font-size: .92rem; }

.summary { position: sticky; top: 84px; padding: 22px; border-radius: var(--radius); background: linear-gradient(170deg, #142245 0%, #0d1530 70%); border: 1px solid rgba(47, 107, 255, .3); }
.summary h3 { font-size: 1.1rem; }
.summary .meta { flex-direction: column; gap: 6px; font-size: .88rem; margin-bottom: 14px; }
.summary-row { display: flex; justify-content: space-between; gap: 12px; padding: 12px 0; border-top: 1px solid var(--line); font-size: .93rem; }
.summary-row span { color: var(--muted); }
.summary-row b { text-align: right; }

.review { display: grid; grid-template-columns: 110px 1fr; gap: 8px 12px; margin: 0 0 8px; padding: 16px; border-radius: 12px; background: #0a1122; border: 1px solid var(--line); }
.review dt { color: var(--muted); font-size: .88rem; }
.review dd { margin: 0; word-break: break-word; }
.inline { margin: 0 0 20px; }
.total { display: flex; justify-content: space-between; align-items: center; padding: 16px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.total b { font-size: 1.5rem; background: var(--silver); -webkit-background-clip: text; background-clip: text; color: transparent; }
.pay-methods { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0; }
.pay-methods span { font-size: .78rem; padding: 6px 10px; border-radius: 8px; border: 1px solid var(--line-2); color: #cbd5e1; }
.methods { border: 0; padding: 0; margin: 18px 0 16px; display: grid; gap: 10px; }
.methods legend { font-weight: 600; font-size: .9rem; margin-bottom: 10px; padding: 0; }
.method { display: flex; gap: 12px; align-items: flex-start; padding: 14px; border-radius: 12px; border: 1px solid var(--line-2); background: #0a1122; cursor: pointer; transition: border-color .15s ease, background .15s ease; }
.method input { margin-top: 4px; accent-color: var(--blue); }
.method-body { display: grid; gap: 2px; }
.method:has(input:checked) { border-color: var(--blue); background: rgba(47, 107, 255, .08); }
.bank { margin: 18px 0; padding: 6px 16px; border-radius: 12px; background: #0a1122; border: 1px solid rgba(47, 107, 255, .35); }
.bank-row { display: flex; align-items: center; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.bank-row:last-child { border-bottom: 0; }
.bank-row span { color: var(--muted); font-size: .88rem; width: 130px; flex: none; }
.bank-row b { flex: 1; word-break: break-all; }
.mono { font-variant-numeric: tabular-nums; letter-spacing: .03em; }
.copy { flex: none; font: inherit; font-size: .78rem; padding: 4px 10px; border-radius: 8px; border: 1px solid var(--line-2); background: transparent; color: #8fb0ff; cursor: pointer; }
.howto { padding-left: 20px; margin: 0 0 20px; color: #c3cddc; font-size: .93rem; }
.howto li { margin-bottom: 6px; }
.agree { display: flex; gap: 10px; align-items: flex-start; font-size: .88rem; color: #c3cddc; margin-bottom: 16px; }
.agree input { margin-top: 4px; accent-color: var(--blue); }

.success-icon { width: 72px; height: 72px; margin: 0 auto 18px; border-radius: 50%; display: grid; place-items: center; background: linear-gradient(135deg, #3b7bff, var(--blue-2)); box-shadow: 0 0 0 8px rgba(47, 107, 255, .15), 0 16px 40px -10px var(--blue-glow); }
.success-icon svg { width: 34px; height: 34px; color: #fff; stroke-width: 3; }
.panel-center .chip { display: table; margin: 0 auto 14px; }
.spinner { width: 48px; height: 48px; margin: 0 auto 18px; border-radius: 50%; border: 4px solid var(--line-2); border-top-color: var(--blue); animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Footer */
.foot { border-top: 1px solid var(--line); padding: 24px 0; color: var(--muted); font-size: .85rem; }
.foot-in { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

/* Responsive */
@media (max-width: 900px) {
  .detail, .flow-grid { grid-template-columns: 1fr; }
  .detail-side { position: static; }
  .summary { position: static; order: -1; }
  .flow-grid .summary { order: -1; }
}
@media (max-width: 640px) {
  .hero { padding: 48px 0 40px; }
  .two-col { grid-template-columns: 1fr; }
  .countdown span { min-width: 64px; }
  .stepper li { font-size: 0; gap: 0; justify-content: center; }
  .panel { padding: 20px; }
  .review { grid-template-columns: 1fr; gap: 2px; }
  .review dd { margin-bottom: 8px; }
  .bank-row span { width: 96px; }
  .has-sticky { padding-bottom: 76px; }
  .sticky-cta { display: flex; position: fixed; z-index: 30; left: 0; right: 0; bottom: 0; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 16px; background: rgba(12, 19, 38, .95); backdrop-filter: blur(10px); border-top: 1px solid var(--line-2); }
  .sticky-cta .btn { width: auto; padding: 11px 22px; }
  .nav-link { display: none; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }