/* ============================================================
 * nustar game app login - style.css
 * All custom classes use the s2f4- prefix.
 * Mobile-first design, max-width: 430px primary container.
 * Palette: #DEB887 / #0A0A0A / #FFEF94 / #FFB3FF / #F5F5F5
 * Code comments are in English.
 * ============================================================ */

:root {
  --s2f4-primary: #DEB887;        /* burlywood gold */
  --s2f4-bg: #0A0A0A;             /* near-black */
  --s2f4-text: #F5F5F5;           /* off-white */
  --s2f4-accent: #FFEF94;         /* soft yellow */
  --s2f4-pink: #FFB3FF;           /* soft pink */
  --s2f4-surface: #15100A;        /* dark warm panel */
  --s2f4-surface2: #1F1810;
  --s2f4-border: rgba(222, 184, 135, 0.25);
  --s2f4-muted: #B7A98C;
  --s2f4-success: #6BCB77;
  --s2f4-danger: #FF6B6B;
}

/* ---------- Reset ---------- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
html, body {
  background: var(--s2f4-bg);
  color: var(--s2f4-text);
  font-family: "Segoe UI", "Helvetica Neue", Roboto, Arial, system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.5rem;
  scroll-behavior: smooth;
}
img { max-width: 100%; display: block; }
a { color: var(--s2f4-primary); text-decoration: none; }
a:hover { color: var(--s2f4-accent); }
ul, ol { list-style: none; }

/* ---------- Layout shell ---------- */
.s2f4-wrapper {
  width: 100%;
  max-width: 430px;
  margin: 0 auto;
  background: var(--s2f4-bg);
  min-height: 100vh;
  position: relative;
  box-shadow: 0 0 40px rgba(0,0,0,0.6);
}
main.s2f4-main { padding-bottom: 84px; }

/* ---------- Header ---------- */
.s2f4-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: linear-gradient(180deg, #14110C 0%, #0A0A0A 100%);
  border-bottom: 1px solid var(--s2f4-border);
  padding: 8px 12px;
}
.s2f4-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.s2f4-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}
.s2f4-logo img { width: 28px; height: 28px; border-radius: 6px; }
.s2f4-logo-name {
  font-weight: 800;
  font-size: 1.15rem;
  background: linear-gradient(90deg, var(--s2f4-accent), var(--s2f4-pink));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: 0.2px;
  white-space: nowrap;
}
.s2f4-header-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}
.s2f4-menu-btn {
  width: 38px; height: 38px;
  border: 1px solid var(--s2f4-border);
  background: transparent;
  color: var(--s2f4-text);
  border-radius: 8px;
  font-size: 1.2rem;
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer;
}

/* ---------- Buttons ---------- */
.s2f4-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.92rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .12s ease, box-shadow .12s ease, background .12s ease;
  text-align: center;
  line-height: 1;
}
.s2f4-btn:active { transform: scale(0.97); }
.s2f4-btn-primary {
  background: linear-gradient(135deg, var(--s2f4-primary), #C99B5E);
  color: #1A1206;
  box-shadow: 0 4px 14px rgba(222,184,135,0.35);
}
.s2f4-btn-primary:hover { color: #1A1206; filter: brightness(1.05); }
.s2f4-btn-accent {
  background: linear-gradient(135deg, var(--s2f4-accent), #FFD86B);
  color: #1A1206;
}
.s2f4-btn-ghost {
  background: transparent;
  color: var(--s2f4-text);
  border-color: var(--s2f4-border);
}
.s2f4-btn-pink {
  background: linear-gradient(135deg, var(--s2f4-pink), #E58AE5);
  color: #2A0033;
}
.s2f4-btn-block { display: flex; width: 100%; }
.s2f4-btn-lg { min-height: 48px; font-size: 1.05rem; }
.s2f4-text-link {
  color: var(--s2f4-accent);
  font-weight: 700;
  border-bottom: 1px dashed rgba(255,239,148,0.5);
}
.s2f4-text-link:hover { color: var(--s2f4-pink); }

/* ---------- Mobile menu drawer ---------- */
.s2f4-mobile-menu {
  position: fixed;
  top: 0; left: 0;
  width: 84%;
  max-width: 360px;
  height: 100%;
  background: var(--s2f4-surface);
  border-right: 1px solid var(--s2f4-border);
  transform: translateX(-105%);
  transition: transform .25s ease;
  z-index: 9999;
  padding: 16px;
  overflow-y: auto;
}
.s2f4-mobile-menu.s2f4-menu-open { transform: translateX(0); }
.s2f4-menu-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 9998;
  display: none;
}
.s2f4-menu-overlay.s2f4-menu-open { display: block; }
.s2f4-menu-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 14px;
}
.s2f4-menu-title { font-weight: 800; color: var(--s2f4-accent); font-size: 1.1rem; }
.s2f4-menu-close {
  width: 34px; height: 34px; border-radius: 8px;
  border: 1px solid var(--s2f4-border);
  background: transparent; color: var(--s2f4-text);
  font-size: 1.1rem; cursor: pointer;
}
.s2f4-menu-section { margin-bottom: 18px; }
.s2f4-menu-section h4 {
  font-size: 0.78rem; color: var(--s2f4-muted);
  text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px;
}
.s2f4-menu-list li { margin-bottom: 6px; }
.s2f4-menu-list a {
  display: block; padding: 10px 12px;
  border-radius: 8px;
  background: var(--s2f4-surface2);
  color: var(--s2f4-text);
  border: 1px solid transparent;
}
.s2f4-menu-list a:hover { border-color: var(--s2f4-border); color: var(--s2f4-accent); }

/* ---------- Sections ---------- */
.s2f4-section { padding: 22px 14px; }
.s2f4-section-alt { background: linear-gradient(180deg, #120D08, #0A0A0A); }
.s2f4-section-title {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 6px;
  color: var(--s2f4-text);
}
.s2f4-section-title .s2f4-hl { color: var(--s2f4-accent); }
.s2f4-section-sub {
  color: var(--s2f4-muted);
  font-size: 0.9rem;
  margin-bottom: 14px;
}
.s2f4-h1 {
  font-size: 1.55rem;
  line-height: 1.3;
  font-weight: 800;
  color: var(--s2f4-text);
}
.s2f4-h1 .s2f4-hl { color: var(--s2f4-primary); }
.s2f4-eyebrow {
  display: inline-block;
  font-size: 0.74rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--s2f4-accent);
  margin-bottom: 6px;
  padding: 3px 8px;
  border: 1px solid var(--s2f4-border);
  border-radius: 999px;
}

/* ---------- Hero / Carousel ---------- */
.s2f4-hero {
  position: relative;
  margin: 12px 0 0;
  padding: 0 12px;
}
.s2f4-carousel {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--s2f4-border);
  background: #000;
}
.s2f4-slides { position: relative; }
.s2f4-slide {
  display: none;
  position: relative;
  cursor: pointer;
}
.s2f4-slide.s2f4-slide-active { display: block; }
.s2f4-slide img { width: 100%; height: 190px; object-fit: cover; }
.s2f4-slide-cap {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 10px 14px;
  background: linear-gradient(0deg, rgba(0,0,0,0.85), transparent);
  color: var(--s2f4-text);
}
.s2f4-slide-cap h3 { font-size: 1.05rem; color: var(--s2f4-accent); }
.s2f4-slide-cap p { font-size: 0.8rem; color: var(--s2f4-text); }
.s2f4-dots {
  display: flex; justify-content: center; gap: 6px;
  padding: 8px 0;
}
.s2f4-slide-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: rgba(245,245,245,0.3);
  cursor: pointer;
}
.s2f4-slide-dot.s2f4-dot-active { background: var(--s2f4-accent); }
.s2f4-hero-cta {
  display: flex; gap: 8px; margin-top: 10px;
}
.s2f4-hero-cta .s2f4-btn { flex: 1; }

/* ---------- Category tabs ---------- */
.s2f4-cat-tabs {
  display: flex; gap: 8px; overflow-x: auto;
  padding: 6px 0 12px;
  scrollbar-width: none;
}
.s2f4-cat-tabs::-webkit-scrollbar { display: none; }
.s2f4-cat-tab {
  flex: 0 0 auto;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--s2f4-border);
  background: var(--s2f4-surface2);
  color: var(--s2f4-text);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
}
.s2f4-cat-tab.s2f4-cat-tab-active {
  background: linear-gradient(135deg, var(--s2f4-primary), #B88A55);
  color: #1A1206;
  border-color: transparent;
}

/* ---------- Game grid ---------- */
.s2f4-cat-section { padding: 8px 0 18px; }
.s2f4-cat-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 10px;
}
.s2f4-cat-head h2 { font-size: 1.1rem; color: var(--s2f4-text); }
.s2f4-cat-head h2 .s2f4-hl { color: var(--s2f4-primary); }
.s2f4-cat-more { font-size: 0.8rem; color: var(--s2f4-accent); font-weight: 700; }
.s2f4-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.s2f4-game-card {
  display: flex;
  flex-direction: column;
  background: var(--s2f4-surface);
  border: 1px solid var(--s2f4-border);
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
  transition: transform .12s ease, border-color .12s ease;
}
.s2f4-game-card:hover { transform: translateY(-2px); border-color: var(--s2f4-primary); }
.s2f4-game-thumb {
  position: relative;
  aspect-ratio: 1 / 1;
  background: #000;
}
.s2f4-game-thumb img { width: 100%; height: 100%; object-fit: cover; }
.s2f4-game-name {
  padding: 6px 8px;
  font-size: 0.74rem;
  text-align: center;
  color: var(--s2f4-text);
  font-weight: 600;
  line-height: 1.2;
  min-height: 32px;
  display: flex; align-items: center; justify-content: center;
}
.s2f4-badge {
  position: absolute; top: 4px; left: 4px;
  background: var(--s2f4-pink);
  color: #2A0033;
  font-size: 0.6rem;
  font-weight: 800;
  padding: 2px 6px;
  border-radius: 6px;
  text-transform: uppercase;
}

/* ---------- Cards / panels ---------- */
.s2f4-card {
  background: var(--s2f4-surface);
  border: 1px solid var(--s2f4-border);
  border-radius: 14px;
  padding: 14px;
  margin-bottom: 12px;
}
.s2f4-card h3 { color: var(--s2f4-accent); font-size: 1.05rem; margin-bottom: 8px; }
.s2f4-card p { color: var(--s2f4-text); font-size: 0.9rem; margin-bottom: 8px; }
.s2f4-card ul.s2f4-list li {
  padding: 6px 0 6px 22px;
  position: relative;
  font-size: 0.88rem;
  color: var(--s2f4-text);
  border-bottom: 1px dashed rgba(222,184,135,0.15);
}
.s2f4-card ul.s2f4-list li:last-child { border-bottom: none; }
.s2f4-card ul.s2f4-list li::before {
  content: "▸";
  position: absolute; left: 4px;
  color: var(--s2f4-primary);
}
.s2f4-feature-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.s2f4-feature {
  background: var(--s2f4-surface2);
  border: 1px solid var(--s2f4-border);
  border-radius: 12px;
  padding: 12px;
  text-align: center;
}
.s2f4-feature .s2f4-feature-ico {
  font-size: 1.6rem; color: var(--s2f4-accent); margin-bottom: 6px;
}
.s2f4-feature h4 { font-size: 0.92rem; color: var(--s2f4-text); margin-bottom: 4px; }
.s2f4-feature p { font-size: 0.78rem; color: var(--s2f4-muted); }

/* ---------- Stats / RTP ---------- */
.s2f4-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.s2f4-stat {
  background: var(--s2f4-surface2);
  border: 1px solid var(--s2f4-border);
  border-radius: 12px;
  padding: 12px;
  text-align: center;
}
.s2f4-stat-num {
  font-size: 1.4rem; font-weight: 800;
  color: var(--s2f4-accent);
}
.s2f4-stat-lbl { font-size: 0.76rem; color: var(--s2f4-muted); }
.s2f4-rtp-row {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 0;
  border-bottom: 1px dashed rgba(222,184,135,0.15);
}
.s2f4-rtp-row:last-child { border-bottom: none; }
.s2f4-rtp-name { flex: 1; font-size: 0.85rem; color: var(--s2f4-text); }
.s2f4-rtp-bar {
  flex: 1.4;
  height: 8px;
  background: rgba(245,245,245,0.1);
  border-radius: 4px;
  overflow: hidden;
}
.s2f4-rtp-bar > span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--s2f4-primary), var(--s2f4-accent));
}
.s2f4-rtp-val { font-size: 0.82rem; color: var(--s2f4-accent); font-weight: 700; width: 44px; text-align: right; }

/* ---------- Testimonials ---------- */
.s2f4-testimonials {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}
.s2f4-testi {
  background: var(--s2f4-surface2);
  border: 1px solid var(--s2f4-border);
  border-radius: 12px;
  padding: 12px;
}
.s2f4-testi-head {
  display: flex; align-items: center; gap: 8px; margin-bottom: 6px;
}
.s2f4-testi-avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: linear-gradient(135deg, var(--s2f4-primary), var(--s2f4-pink));
  color: #1A1206;
  font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem;
}
.s2f4-testi-name { font-size: 0.88rem; font-weight: 700; color: var(--s2f4-text); }
.s2f4-testi-stars { color: var(--s2f4-accent); font-size: 0.78rem; }
.s2f4-testi-text { font-size: 0.85rem; color: var(--s2f4-muted); }

/* ---------- Payment ---------- */
.s2f4-pay-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.s2f4-pay-item {
  background: var(--s2f4-surface2);
  border: 1px solid var(--s2f4-border);
  border-radius: 10px;
  padding: 10px;
  text-align: center;
}
.s2f4-pay-item .s2f4-pay-ico { font-size: 1.4rem; color: var(--s2f4-accent); }
.s2f4-pay-item span { display: block; margin-top: 4px; font-size: 0.74rem; color: var(--s2f4-text); }

/* ---------- Winners ---------- */
.s2f4-winner {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 0;
  border-bottom: 1px dashed rgba(222,184,135,0.15);
}
.s2f4-winner:last-child { border-bottom: none; }
.s2f4-winner-ico {
  width: 34px; height: 34px; border-radius: 50%;
  background: linear-gradient(135deg, var(--s2f4-pink), var(--s2f4-primary));
  color: #1A1206;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800;
}
.s2f4-winner-info { flex: 1; }
.s2f4-winner-name { font-size: 0.85rem; color: var(--s2f4-text); font-weight: 600; }
.s2f4-winner-game { font-size: 0.74rem; color: var(--s2f4-muted); }
.s2f4-winner-amt { color: var(--s2f4-accent); font-weight: 800; font-size: 0.92rem; }

/* ---------- FAQ ---------- */
.s2f4-faq-item {
  background: var(--s2f4-surface2);
  border: 1px solid var(--s2f4-border);
  border-radius: 10px;
  padding: 10px 12px;
  margin-bottom: 8px;
}
.s2f4-faq-q { font-weight: 700; color: var(--s2f4-accent); font-size: 0.9rem; margin-bottom: 4px; }
.s2f4-faq-a { color: var(--s2f4-text); font-size: 0.85rem; }

/* ---------- Tricks / steps ---------- */
.s2f4-steps { counter-reset: step; }
.s2f4-step {
  position: relative;
  padding: 10px 10px 10px 44px;
  margin-bottom: 8px;
  background: var(--s2f4-surface2);
  border: 1px solid var(--s2f4-border);
  border-radius: 10px;
}
.s2f4-step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute; left: 10px; top: 10px;
  width: 26px; height: 26px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--s2f4-primary), var(--s2f4-accent));
  color: #1A1206;
  font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem;
}
.s2f4-step h4 { color: var(--s2f4-text); font-size: 0.92rem; margin-bottom: 2px; }
.s2f4-step p { color: var(--s2f4-muted); font-size: 0.82rem; }

/* ---------- App download CTA ---------- */
.s2f4-app-cta {
  background: radial-gradient(circle at top right, rgba(255,179,255,0.18), transparent 60%),
              linear-gradient(135deg, #1a130a, #0A0A0A);
  border: 1px solid var(--s2f4-border);
  border-radius: 16px;
  padding: 18px;
  text-align: center;
}
.s2f4-app-cta h3 { color: var(--s2f4-accent); font-size: 1.15rem; margin-bottom: 6px; }
.s2f4-app-cta p { color: var(--s2f4-text); font-size: 0.88rem; margin-bottom: 12px; }
.s2f4-app-btns { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }

/* ---------- Achievements ---------- */
.s2f4-ach-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.s2f4-ach {
  background: var(--s2f4-surface2);
  border: 1px solid var(--s2f4-border);
  border-radius: 12px;
  padding: 12px;
  text-align: center;
}
.s2f4-ach .material-icons, .s2f4-ach i { font-size: 1.6rem; color: var(--s2f4-pink); margin-bottom: 6px; }
.s2f4-ach h4 { font-size: 0.88rem; color: var(--s2f4-accent); margin-bottom: 2px; }
.s2f4-ach p { font-size: 0.76rem; color: var(--s2f4-muted); }

/* ---------- Promo banner ---------- */
.s2f4-promo-band {
  background: linear-gradient(135deg, var(--s2f4-primary), var(--s2f4-pink));
  color: #1A1206;
  border-radius: 14px;
  padding: 14px;
  text-align: center;
  margin-bottom: 12px;
}
.s2f4-promo-band h3 { font-size: 1.15rem; font-weight: 800; margin-bottom: 4px; }
.s2f4-promo-band p { font-size: 0.85rem; margin-bottom: 10px; }

/* ---------- Footer ---------- */
.s2f4-footer {
  background: #050505;
  border-top: 1px solid var(--s2f4-border);
  padding: 22px 14px 14px;
  color: var(--s2f4-muted);
}
.s2f4-footer-brand {
  display: flex; align-items: center; gap: 8px; margin-bottom: 10px;
}
.s2f4-footer-brand img { width: 28px; height: 28px; border-radius: 6px; }
.s2f4-footer-brand strong { color: var(--s2f4-accent); font-size: 1rem; }
.s2f4-footer p { font-size: 0.82rem; line-height: 1.5; margin-bottom: 10px; color: var(--s2f4-muted); }
.s2f4-footer-links {
  display: flex; flex-wrap: wrap; gap: 6px 10px; margin-bottom: 12px;
}
.s2f4-footer-links a {
  font-size: 0.78rem; color: var(--s2f4-text);
  padding: 4px 8px; border-radius: 6px;
  background: var(--s2f4-surface2);
  border: 1px solid var(--s2f4-border);
}
.s2f4-footer-links a:hover { color: var(--s2f4-accent); }
.s2f4-footer-promos {
  display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px;
}
.s2f4-footer-promos .s2f4-btn { flex: 1 1 40%; min-height: 34px; font-size: 0.78rem; padding: 0 10px; }
.s2f4-footer-copy {
  font-size: 0.72rem; color: var(--s2f4-muted); text-align: center;
  border-top: 1px dashed rgba(222,184,135,0.15);
  padding-top: 10px;
}

/* ---------- Bottom navigation (mobile only) ---------- */
.s2f4-bottom-nav {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 1000;
  height: 62px;
  background: linear-gradient(180deg, #14110C, #050505);
  border-top: 1px solid var(--s2f4-border);
  display: flex;
  justify-content: space-around;
  align-items: stretch;
  padding: 4px 0 0;
}
.s2f4-bottom-nav-btn {
  flex: 1;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2px;
  color: var(--s2f4-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 0.66rem;
  font-weight: 700;
  text-decoration: none;
  transition: color .12s ease, transform .12s ease;
  min-width: 60px;
  min-height: 56px;
}
.s2f4-bottom-nav-btn .s2f4-nav-ico { font-size: 22px; line-height: 1; }
.s2f4-bottom-nav-btn:hover { color: var(--s2f4-accent); }
.s2f4-bottom-nav-btn.s2f4-bottom-nav-active { color: var(--s2f4-accent); }
.s2f4-bottom-nav-btn.s2f4-bottom-nav-active .s2f4-nav-ico {
  background: linear-gradient(135deg, var(--s2f4-primary), var(--s2f4-accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.s2f4-bottom-nav-btn.s2f4-tap { transform: scale(0.92); }
.s2f4-nav-badge {
  position: absolute;
  top: 4px; right: 22%;
  background: var(--s2f4-danger);
  color: #fff;
  font-size: 0.58rem;
  padding: 1px 4px;
  border-radius: 8px;
}
.s2f4-nav-item { position: relative; }

/* ---------- Utility ---------- */
.s2f4-container { width: 100%; max-width: 430px; margin: 0 auto; padding: 0 12px; }
.s2f4-row { display: flex; gap: 10px; }
.s2f4-row-between { display: flex; justify-content: space-between; align-items: center; }
.s2f4-text-center { text-align: center; }
.s2f4-mt-8 { margin-top: 8px; } .s2f4-mt-12 { margin-top: 12px; } .s2f4-mt-16 { margin-top: 16px; }
.s2f4-mb-8 { margin-bottom: 8px; } .s2f4-mb-12 { margin-bottom: 12px; } .s2f4-mb-16 { margin-bottom: 16px; }
.s2f4-hidden { display: none !important; }
.s2f4-prose p { font-size: 0.88rem; color: var(--s2f4-text); margin-bottom: 8px; }
.s2f4-prose strong { color: var(--s2f4-accent); }

/* ---------- Desktop: hide mobile bottom nav, widen shell ---------- */
@media (min-width: 769px) {
  .s2f4-bottom-nav { display: none; }
  main.s2f4-main { padding-bottom: 24px; }
  .s2f4-wrapper { max-width: 430px; }
}

/* ---------- Small phones ---------- */
@media (max-width: 360px) {
  .s2f4-grid { grid-template-columns: repeat(2, 1fr); }
  .s2f4-section-title { font-size: 1.15rem; }
  .s2f4-h1 { font-size: 1.35rem; }
}