/* ==========================================================================
   S9 Game — download.css  (download.html)
   ========================================================================== */

.dl-hero {
  position: relative;
  padding-top: calc(var(--header-h) + clamp(2rem, 1.2rem + 4vw, 4rem));
  padding-bottom: clamp(2.5rem, 1.6rem + 4vw, 5rem);
  overflow: hidden;
  background:
    radial-gradient(1000px 520px at 78% 18%, rgba(230, 185, 79, 0.14), transparent 68%),
    radial-gradient(800px 420px at 10% 80%, rgba(216, 31, 60, 0.16), transparent 66%),
    var(--color-obsidian-900);
  border-bottom: 1px solid var(--color-frame);
}

.dl-hero__inner {
  position: relative;
  z-index: var(--z-base);
  display: grid;
  gap: clamp(2rem, 1.4rem + 3.5vw, 3.75rem);
  align-items: center;
}

.dl-hero h1 {
  font-size: var(--text-5xl);
  margin-top: var(--space-xs);
}

.dl-hero__sub {
  margin-top: var(--space-sm);
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
  max-width: 54ch;
}

/* file facts strip */
.file-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: var(--space-lg);
  border-radius: var(--radius-md);
  border: var(--border-frame);
  background: var(--color-frame);
  overflow: hidden;
}

.file-facts div {
  padding: 0.85rem 1rem;
  background: var(--color-obsidian-700);
}

.file-facts dt {
  font-size: 0.62rem;
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.file-facts dd {
  margin-top: 0.25rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: var(--weight-semibold);
  color: var(--color-gold-200);
}

/* QR panel */
.qr-panel {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--card-pad);
  border-radius: var(--radius-lg);
  border: var(--card-border);
  background: var(--card-bg);
  box-shadow: var(--shadow-md);
  flex-wrap: wrap;
}

.qr-code {
  display: grid;
  place-items: center;
  width: 118px;
  height: 118px;
  flex: none;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-frame-strong);
  background:
    repeating-conic-gradient(var(--color-obsidian-900) 0% 25%, var(--color-obsidian-500) 0% 50%) 0 0 / 14px 14px;
  box-shadow: inset 0 0 0 6px var(--color-obsidian-900), var(--glow-gold-sm);
  position: relative;
  overflow: hidden;
}

.qr-code::after {
  content: "QR";
  position: absolute;
  inset: auto;
  padding: 0.3rem 0.5rem;
  border-radius: var(--radius-xs);
  background: var(--color-obsidian-900);
  border: 1px solid var(--color-frame);
  font-size: 0.6rem;
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-wide);
  color: var(--color-gold-300);
}

.qr-panel h4 {
  font-family: var(--font-body);
  font-size: 0.95rem;
  margin-bottom: 0.35rem;
}

.qr-panel p {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: var(--leading-normal);
}

/* Install steps — vertical gold rail */
.install {
  position: relative;
  display: grid;
  gap: var(--space-md);
  padding-left: 0;
}

.install__step {
  position: relative;
  display: grid;
  gap: 0.6rem;
  padding: var(--card-pad);
  padding-left: calc(var(--card-pad) + 3.5rem);
  border-radius: var(--radius-lg);
  border: var(--card-border);
  background: var(--card-bg);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}

.install__step:hover {
  border-color: var(--color-frame-strong);
  transform: translateX(4px);
}

.install__num {
  position: absolute;
  left: var(--card-pad);
  top: var(--card-pad);
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-circle);
  background:
    radial-gradient(circle at 34% 28%, rgba(255, 255, 255, 0.32), transparent 55%),
    var(--gradient-gold-btn);
  color: var(--color-text-on-gold);
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: var(--weight-black);
  box-shadow: 0 8px 22px rgba(230, 185, 79, 0.3);
}

.install__step h3 {
  font-size: var(--text-lg);
}

.install__step p {
  font-size: 0.9rem;
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}

.install__tip {
  display: flex;
  gap: 0.6rem;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-sm);
  background: rgba(230, 185, 79, 0.06);
  border: 1px solid var(--color-frame);
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

.install__tip b {
  color: var(--color-gold-200);
}

/* On narrow phones the 3.5rem inset wastes too much width. */
@media (max-width: 520px) {
  .install__step {
    padding-left: var(--card-pad);
    padding-top: calc(var(--card-pad) + 3rem);
  }
}

/* Security callouts */
.safe-grid {
  display: grid;
  gap: var(--space-sm);
}

.safe-item {
  display: flex;
  gap: 0.85rem;
  padding: 1.1rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(41, 180, 131, 0.22);
  background: rgba(41, 180, 131, 0.05);
}

.safe-item svg {
  width: 20px;
  height: 20px;
  flex: none;
  color: var(--color-jade-400);
  margin-top: 2px;
}

.safe-item h4 {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: var(--weight-bold);
  margin-bottom: 0.25rem;
}

.safe-item p {
  font-size: 0.82rem;
  line-height: var(--leading-normal);
  color: var(--color-text-secondary);
}

/* platform chips */
.platforms {
  display: grid;
  gap: var(--space-sm);
}

.platform {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 1rem 1.15rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-hairline);
  background: var(--color-obsidian-700);
  transition: all var(--dur-base) var(--ease-out);
}

.platform:hover {
  border-color: var(--color-frame-strong);
  transform: translateY(-3px);
}

.platform__ico {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  flex: none;
  border-radius: 13px;
  background: var(--color-obsidian-500);
  border: 1px solid var(--color-frame);
  color: var(--color-gold-300);
}

.platform__ico svg {
  width: 22px;
  height: 22px;
}

.platform strong {
  display: block;
  font-size: 0.9rem;
}

.platform span {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

@media (min-width: 768px) {
  .file-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .safe-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .platforms {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .dl-hero__inner {
    grid-template-columns: 1.05fr 0.95fr;
  }

  .install {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}