:root {
  --bg: #0c1018;
  --panel: rgba(22, 32, 48, 0.92);
  --yellow: #ffd84d;
  --yellow-glow: rgba(255, 216, 77, 0.3);
  --cyan: #4ec8ff;
  --blue-soft: #a8c8f0;
  --red: #ff4757;
  --text: #eaf2ff;
  --muted: #7a8da8;
  --border: rgba(78, 200, 255, 0.15);
  --border-hot: rgba(255, 216, 77, 0.4);
  --font: 'Montserrat', sans-serif;
  --font-display: 'Unbounded', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 1.25rem 1rem 2rem;
}

.bg-glow {
  position: fixed; inset: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 60% 50% at 20% 0%, rgba(78, 200, 255, 0.1), transparent),
    radial-gradient(ellipse 50% 40% at 80% 100%, rgba(255, 71, 87, 0.07), transparent);
}

.snow { position: fixed; inset: 0; pointer-events: none; overflow: hidden; }
.snowflake { position: absolute; top: -10px; color: rgba(255,255,255,0.3); animation: fall linear infinite; user-select: none; }
@keyframes fall { to { transform: translateY(105vh) rotate(360deg); } }

.page {
  position: relative; z-index: 2;
  width: min(720px, 100%);
  display: flex; flex-direction: column; gap: 0.75rem;
}

.head { text-align: center; }
.brand { font-family: var(--font-display); font-size: 1.5rem; font-weight: 800; letter-spacing: 0.08em; color: var(--text); text-decoration: none; }
.brand span { color: var(--yellow); }
.head__sub { font-size: 0.82rem; color: var(--muted); margin-top: 0.25rem; }
.head__price { margin-top: 0.5rem; font-family: var(--font-display); font-size: 1.6rem; font-weight: 800; color: var(--yellow); }
.head__price small { font-size: 0.85rem; color: var(--muted); font-weight: 600; }

.main-tabs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.4rem; }
.main-tab {
  padding: 0.6rem 0.5rem; background: var(--panel); border: 2px solid var(--border);
  border-radius: 10px; font-family: var(--font); font-size: 0.8rem; font-weight: 700;
  color: var(--muted); cursor: pointer; transition: all 0.2s;
}
.main-tab:hover { border-color: var(--cyan); color: var(--text); }
.main-tab--active { border-color: var(--cyan); color: var(--cyan); background: rgba(78, 200, 255, 0.08); }

.section { display: none; flex-direction: column; gap: 0.6rem; }
.section--active { display: flex; }

.info-card {
  background: var(--panel); border: 1px solid var(--border); border-left: 3px solid var(--cyan);
  border-radius: 12px; padding: 0.85rem 1rem;
}
.info-card--accent { border-left-color: var(--red); background: rgba(255, 71, 87, 0.06); }
.info-card__title { font-size: 0.9rem; font-weight: 700; color: var(--yellow); margin-bottom: 0.5rem; }
.info-card p, .info-card li { font-size: 0.82rem; color: var(--blue-soft); line-height: 1.6; }
.info-card p + p { margin-top: 0.5rem; }
.info-card b { color: var(--yellow); font-weight: 600; }
.info-card__note { margin-top: 0.6rem !important; font-size: 0.78rem !important; color: var(--muted) !important; }
.info-card__hint { margin-top: 0.5rem !important; font-size: 0.75rem !important; color: var(--muted) !important; font-style: italic; }

.info-list { list-style: none; display: flex; flex-direction: column; gap: 0.35rem; }
.info-list li::before { content: '— '; color: var(--cyan); }

.perks { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 0.5rem; }
.perk { padding: 0.3rem 0.6rem; background: rgba(78,200,255,0.1); border-radius: 6px; font-size: 0.72rem; font-weight: 700; color: var(--cyan); }

.steps { list-style: none; counter-reset: step; display: flex; flex-direction: column; gap: 0.5rem; }
.steps li { counter-increment: step; padding-left: 1.6rem; position: relative; font-size: 0.82rem; color: var(--blue-soft); line-height: 1.5; }
.steps li::before {
  content: counter(step); position: absolute; left: 0; top: 0;
  width: 1.2rem; height: 1.2rem; background: var(--cyan); color: var(--bg);
  border-radius: 50%; font-size: 0.65rem; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}

.tg-link { display: inline-block; margin-top: 0.4rem; font-family: var(--font-display); font-size: 1.1rem; font-weight: 800; color: var(--cyan) !important; text-decoration: none; }
.tg-link:hover { color: var(--yellow) !important; }

.tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
.tab {
  display: flex; flex-direction: column; align-items: center; padding: 0.7rem 0.5rem;
  background: var(--panel); border: 2px solid var(--border); border-radius: 12px;
  cursor: pointer; font-family: var(--font); color: var(--text); transition: all 0.2s;
}
.tab:hover { border-color: var(--cyan); }
.tab--active { border-color: var(--yellow); background: rgba(255,216,77,0.08); box-shadow: 0 0 24px var(--yellow-glow); }
.tab__city { font-family: var(--font-display); font-size: 0.95rem; font-weight: 800; }
.tab--active .tab__city { color: var(--yellow); }
.tab__sub { font-size: 0.68rem; color: var(--muted); margin-top: 0.15rem; }

.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 0.85rem; transition: opacity 0.25s; }
.panel--fade { opacity: 0; }

.dc-info { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-bottom: 0.65rem; padding-bottom: 0.65rem; border-bottom: 1px solid rgba(255,255,255,0.06); }
.dc-chip { font-size: 0.68rem; font-weight: 600; color: var(--blue-soft); padding: 0.25rem 0.55rem; background: rgba(78,200,255,0.08); border-radius: 999px; }

.tariff-list {
  display: flex; flex-direction: column; gap: 0.35rem;
  max-height: 38vh; overflow-y: auto;
  scrollbar-width: thin; scrollbar-color: var(--cyan) transparent;
}
.tariff-list::-webkit-scrollbar { width: 4px; }
.tariff-list::-webkit-scrollbar-thumb { background: var(--cyan); border-radius: 4px; }

.tariff-row {
  display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 0.5rem;
  padding: 0.55rem 0.65rem; background: rgba(12,16,24,0.5);
  border: 1px solid rgba(255,255,255,0.05); border-radius: 8px;
  transition: border-color 0.2s, background 0.2s;
}
.tariff-row:hover { border-color: rgba(78,200,255,0.25); background: rgba(12,16,24,0.75); }
.tariff-row--hot { border-color: var(--border-hot); background: rgba(255,216,77,0.06); }
.tariff-row__spec { font-size: 0.78rem; line-height: 1.35; }
.tariff-row__spec b { color: var(--cyan); font-size: 0.85rem; }
.tariff-row--hot .tariff-row__spec b { color: var(--yellow); }
.tariff-row__badge { font-size: 0.58rem; font-weight: 800; text-transform: uppercase; color: #ff9f43; margin-left: 0.35rem; }
.tariff-row__price { font-family: var(--font-display); font-size: 0.9rem; font-weight: 800; color: var(--yellow); white-space: nowrap; }
.tariff-row__btn {
  padding: 0.35rem 0.65rem; font-size: 0.68rem; font-weight: 700; border-radius: 6px;
  background: rgba(78,200,255,0.12); border: 1px solid var(--cyan);
  color: var(--cyan) !important; text-decoration: none !important; white-space: nowrap; transition: all 0.2s;
}
.tariff-row__btn:hover { background: var(--cyan); color: var(--bg) !important; }
.tariff-row--hot .tariff-row__btn { background: linear-gradient(135deg, #ff6b35, #ff4757); border: none; color: #fff !important; }

.panel__hint { margin-top: 0.6rem; font-size: 0.75rem; color: var(--muted); font-style: italic; text-align: center; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.8rem 1.2rem; border-radius: 12px; font-family: var(--font);
  font-size: 0.85rem; font-weight: 700; text-decoration: none !important;
  transition: transform 0.2s, box-shadow 0.2s;
}
.btn--fire { background: linear-gradient(135deg, #ff6b35, #ff4757); color: #fff !important; box-shadow: 0 4px 20px rgba(255,71,87,0.35); }
.btn--fire:hover { transform: translateY(-2px); box-shadow: 0 6px 28px rgba(255,71,87,0.45); }
.btn--block { width: 100%; }

.foot { display: flex; align-items: center; justify-content: center; gap: 0.5rem; font-size: 0.75rem; color: var(--muted); }
.dynamic-text { font-style: italic; color: var(--blue-soft); transition: opacity 0.4s; }

@media (max-width: 480px) {
  .main-tab { font-size: 0.72rem; padding: 0.5rem 0.3rem; }
  .tariff-row { grid-template-columns: 1fr; gap: 0.35rem; }
  .tariff-row__btn { width: 100%; text-align: center; padding: 0.45rem; }
}