/* ─────────── Desktop hi-fi styles ─────────── */
.hfd {
  width: 1440px;
  background: var(--hf-bg);
  color: var(--hf-ink);
  font-family: var(--hf-font-body);
  -webkit-font-smoothing: antialiased;
  position: relative;
  border-radius: 0;
  overflow: hidden;
  box-shadow: none;
}
.hfd * { box-sizing: border-box; }
.hfd p { margin: 0; }
.hfd h1, .hfd h2, .hfd h3, .hfd h4 { margin: 0; font-family: var(--hf-font-display); letter-spacing: -0.025em; }
.hfd h1 { font-size: 72px; line-height: 0.96; font-weight: 800; letter-spacing: -0.045em; }
.hfd h2 { font-size: 48px; line-height: 1.0;  font-weight: 800; letter-spacing: -0.035em; }
.hfd h3 { font-size: 18px; line-height: 1.25; font-weight: 700; letter-spacing: -0.01em; }
.hfd .display-italic { font-style: italic; font-family: 'Manrope', serif; font-weight: 500; }
.hfd .h-accent {
  background: linear-gradient(180deg, transparent 64%, var(--hf-tg-soft) 64%);
  padding: 0 4px;
}

.hfd .eyebrow {
  font-family: var(--hf-font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--hf-tg-deep);
  font-weight: 600;
}
.hfd .lead { font-size: 19px; line-height: 1.5; color: var(--hf-ink-2); text-wrap: pretty; }
.hfd .body { font-size: 15.5px; line-height: 1.55; color: var(--hf-ink-2); text-wrap: pretty; }
.hfd .meta { font-size: 13px; color: var(--hf-ink-3); }
.hfd .num  { font-family: var(--hf-font-mono); font-weight: 600; font-feature-settings: 'tnum' 1; }

/* Section */
.hfd-section {
  padding: 110px 80px;
  position: relative;
}
.hfd-section.tight { padding-top: 60px; padding-bottom: 60px; }
.hfd-section.alt   { background: var(--hf-surface-2); }
.hfd-section.dark  { background: var(--hf-ink); color: white; }
.hfd-section.dark .lead { color: rgba(255,255,255,0.7); }
.hfd-section.dark .meta { color: rgba(255,255,255,0.55); }
.hfd-section.surface { background: var(--hf-surface); }

.hfd-container { max-width: 1280px; margin: 0 auto; }

/* Eyebrow row */
.hfd-eyebrow-row {
  display: flex; align-items: center; gap: 16px;
  margin-bottom: 20px;
}
.hfd-eyebrow-row::after {
  content: ""; flex: 1; height: 1px; background: var(--hf-line-2);
}
.hfd-section.dark .hfd-eyebrow-row::after { background: rgba(255,255,255,0.12); }

/* Header */
.hfd-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 80px;
  background: rgba(250,250,250,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--hf-line);
}
.hfd-nav { display: flex; gap: 28px; align-items: center; }
.hfd-nav a { font-size: 14px; font-weight: 500; color: var(--hf-ink-2); text-decoration: none; }
.hfd-nav a:hover { color: var(--hf-ink); }

.hfd-logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-family: var(--hf-font-display); font-size: 18px; letter-spacing: -0.02em; }
.hfd-logo-mark {
  width: 32px; height: 32px; border-radius: 9px;
  background: linear-gradient(135deg, var(--hf-tg) 0%, var(--hf-tg-deep) 100%);
  display: inline-flex; align-items: center; justify-content: center;
  color: white; font-size: 16px; font-weight: 700;
  box-shadow: 0 2px 8px rgba(42,171,238,0.3);
}

.hfd-header-actions { display: inline-flex; gap: 12px; align-items: center; }
.hfd-header-cta {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px;
  background: var(--hf-ink);
  color: white;
  border: none;
  border-radius: 999px;
  font-family: var(--hf-font-body);
  font-weight: 600;
  font-size: 13.5px;
  cursor: pointer;
  box-shadow: 0 4px 12px -2px rgba(15,20,25,0.25);
}
.hfd-header-cta-dot {
  width: 7px; height: 7px;
  border-radius: 999px;
  background: var(--hf-tg);
  box-shadow: 0 0 0 3px rgba(42,171,238,0.25);
}

/* Hero */
.hfd-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  padding: 80px 80px 120px;
}
.hfd-hero-left { max-width: 580px; }
.hfd-video {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  background: linear-gradient(135deg, #1a2332 0%, #0f1419 100%);
  aspect-ratio: 16/10;
  box-shadow: var(--hf-shadow-lg);
}
.hfd-video-play {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
}
.hfd-video-play-btn {
  width: 96px; height: 96px;
  border-radius: 999px;
  background: rgba(255,255,255,0.16);
  backdrop-filter: blur(20px);
  border: 1.5px solid rgba(255,255,255,0.4);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease;
}
.hfd-video-play-btn:hover { background: rgba(255,255,255,0.22); transform: scale(1.05); }
.hfd-video-controls {
  position: absolute; left: 20px; right: 20px; bottom: 16px;
  display: flex; align-items: center; gap: 14px;
  color: white;
  font-family: var(--hf-font-mono);
  font-size: 12px;
}
.hfd-video-bar { flex: 1; height: 3px; border-radius: 2px; background: rgba(255,255,255,0.25); position: relative; }
.hfd-video-bar::after { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 8%; background: white; border-radius: 2px; }

/* CTA */
.hfd-btn-primary {
  display: inline-flex; align-items: center; gap: 14px;
  padding: 16px 22px 16px 26px;
  border-radius: 16px;
  border: none;
  cursor: pointer;
  font-family: var(--hf-font-body);
  letter-spacing: -0.01em;
  text-align: left;
  background: linear-gradient(180deg, #2aabee 0%, #1f8fc9 100%);
  color: white;
  box-shadow:
    0 1px 0 rgba(255,255,255,0.25) inset,
    0 -2px 0 rgba(0,0,0,0.08) inset,
    0 14px 28px -8px rgba(31,143,201,0.55),
    0 6px 14px -4px rgba(31,143,201,0.4);
  transition: transform 0.12s ease, box-shadow 0.2s ease;
}
.hfd-btn-primary:active { transform: translateY(1px); }
.hfd-btn-primary:hover { box-shadow:
    0 1px 0 rgba(255,255,255,0.25) inset,
    0 -2px 0 rgba(0,0,0,0.08) inset,
    0 18px 32px -8px rgba(31,143,201,0.65),
    0 8px 16px -4px rgba(31,143,201,0.5);
}
.hfd-btn-primary-label { display: flex; flex-direction: column; gap: 3px; }
.hfd-btn-primary-label > span:first-child { font-size: 17px; font-weight: 700; line-height: 1.1; }
.hfd-btn-primary-sub { font-size: 12px; font-weight: 500; opacity: 0.78; font-family: var(--hf-font-mono); }
.hfd-btn-primary-arrow {
  width: 42px; height: 42px;
  border-radius: 999px;
  background: rgba(255,255,255,0.18);
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid rgba(255,255,255,0.25);
  transition: transform 0.2s ease, background 0.2s ease;
}
.hfd-btn-primary:hover .hfd-btn-primary-arrow { background: rgba(255,255,255,0.28); transform: translateX(2px); }

.hfd-btn-secondary {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 14px 20px;
  background: var(--hf-surface);
  color: var(--hf-ink);
  border: 1px solid var(--hf-line-2);
  border-radius: 16px;
  font-family: var(--hf-font-body);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  box-shadow: var(--hf-shadow-sm);
}
.hfd-btn-secondary-play {
  width: 32px; height: 32px;
  border-radius: 999px;
  background: var(--hf-ink); color: white;
  display: inline-flex; align-items: center; justify-content: center;
}
.hfd-btn-secondary-play svg { margin-left: 1.5px; }
.hfd-btn-secondary-meta { font-family: var(--hf-font-mono); font-size: 12px; color: var(--hf-ink-3); margin-left: 6px; }

.hfd-cta-row { display: flex; gap: 14px; margin-top: 32px; align-items: center; }
.hfd-cta-meta { margin-top: 16px; color: var(--hf-ink-3); font-size: 13.5px; }

/* Card */
.hfd-card {
  background: var(--hf-surface);
  border: 1px solid var(--hf-line);
  border-radius: 18px;
  padding: 28px;
  box-shadow: var(--hf-shadow-sm);
}
.hfd-card.tg-soft { background: var(--hf-tg-soft); border-color: rgba(42,171,238,0.18); }
.hfd-card.dark    { background: var(--hf-ink); color: white; border-color: rgba(255,255,255,0.06); }
.hfd-card.bare    { background: transparent; border: 1px dashed var(--hf-line-2); box-shadow: none; }

/* Grid */
.hfd-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.hfd-grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; }
.hfd-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

/* Channels */
.hfd-channels-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.hfd-channel {
  display: flex; align-items: center; gap: 14px;
  padding: 20px 24px;
  border-radius: 16px;
  background: var(--hf-surface);
  border: 1px solid var(--hf-line);
  box-shadow: var(--hf-shadow-sm);
  font-weight: 700;
  font-size: 17px;
  font-family: var(--hf-font-display);
  letter-spacing: -0.01em;
}
.hfd-channel.tg  { background: var(--hf-tg-soft); border-color: rgba(42,171,238,0.3); color: var(--hf-tg-deep); }
.hfd-channel-meta { display: block; font-family: var(--hf-font-body); font-size: 12px; font-weight: 500; color: var(--hf-ink-3); margin-top: 2px; }
.hfd-channel.tg .hfd-channel-meta { color: var(--hf-tg-deep); opacity: 0.7; }

/* Monetization tile */
.hfd-monet {
  display: flex; gap: 18px; align-items: flex-start;
  padding: 28px;
  background: var(--hf-surface);
  border: 1px solid var(--hf-line);
  border-radius: 18px;
  box-shadow: var(--hf-shadow-sm);
  position: relative;
  overflow: hidden;
  transition: transform 0.15s ease, box-shadow 0.2s ease;
}
.hfd-monet:hover { transform: translateY(-2px); box-shadow: var(--hf-shadow); }
.hfd-monet-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 24px;
  color: white;
  flex-shrink: 0;
}
.hfd-monet-num { font-family: var(--hf-font-mono); font-size: 12px; color: var(--hf-ink-3); }
.hfd-monet h3 { margin-top: 6px; font-size: 19px; }
.hfd-monet p { margin-top: 8px; font-size: 14.5px; line-height: 1.5; color: var(--hf-ink-2); }

/* Tools tile */
.hfd-tool {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 16px;
  background: var(--hf-surface);
  border: 1px solid var(--hf-line);
  border-radius: 14px;
  font-size: 14px;
  font-weight: 500;
  box-shadow: var(--hf-shadow-sm);
}
.hfd-tool-mark {
  width: 24px; height: 24px;
  border-radius: 7px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: white;
}

/* Topic mock */
.hfd-tg-mock {
  background: var(--hf-surface);
  border-radius: 22px;
  box-shadow: var(--hf-shadow-lg);
  overflow: hidden;
  border: 1px solid var(--hf-line);
}
.hfd-tg-mock-head {
  display: flex; align-items: center; gap: 14px;
  padding: 18px 22px;
  border-bottom: 1px solid var(--hf-line);
}
.hfd-tg-row {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 22px;
  border-bottom: 1px solid var(--hf-line);
}
.hfd-tg-row:last-child { border-bottom: none; }
.hfd-tg-ava {
  width: 44px; height: 44px;
  border-radius: 999px;
  display: inline-flex; align-items: center; justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 16px;
  flex-shrink: 0;
}

/* Provider tile */
.hfd-provider {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 18px;
  background: var(--hf-surface);
  border: 1px solid var(--hf-line);
  border-radius: 14px;
  box-shadow: var(--hf-shadow-sm);
  font-size: 14.5px;
  font-weight: 600;
}
.hfd-provider-mark {
  height: 26px; min-width: 26px; padding: 0 8px;
  border-radius: 6px;
  display: inline-flex; align-items: center; justify-content: center;
  color: white; font-weight: 800; font-size: 12px;
  font-family: var(--hf-font-display); letter-spacing: -0.02em;
}

/* Tier */
.hfd-tier {
  padding: 32px 28px;
  background: var(--hf-surface);
  border: 1px solid var(--hf-line-2);
  border-radius: 22px;
  position: relative;
  display: flex; flex-direction: column;
  box-shadow: var(--hf-shadow-sm);
}
.hfd-tier.popular {
  background: linear-gradient(180deg, rgba(42,171,238,0.06) 0%, rgba(42,171,238,0.02) 100%);
  border-color: var(--hf-tg);
  border-width: 1.5px;
  box-shadow: var(--hf-shadow);
}
.hfd-tier-name { font-family: var(--hf-font-display); font-weight: 700; font-size: 17px; letter-spacing: -0.01em; }
.hfd-tier-desc { font-size: 13px; color: var(--hf-ink-3); margin-top: 6px; min-height: 36px; }
.hfd-tier-price { font-family: var(--hf-font-display); font-weight: 800; font-size: 44px; letter-spacing: -0.03em; margin-top: 20px; line-height: 1; }
.hfd-tier-cur   { font-size: 18px; font-weight: 500; color: var(--hf-ink-3); }
.hfd-tier-per   { display: block; font-size: 13px; font-weight: 500; color: var(--hf-ink-3); margin-top: 6px; }
.hfd-tier-pop {
  position: absolute; top: -10px; left: 28px;
  background: var(--hf-tg);
  color: white;
  font-family: var(--hf-font-mono);
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 6px;
  letter-spacing: 0.05em;
}
.hfd-tier ul { list-style: none; padding: 0; margin: 22px 0 0; display: flex; flex-direction: column; gap: 10px; }
.hfd-tier li { font-size: 13.5px; color: var(--hf-ink-2); display: flex; gap: 8px; align-items: flex-start; }
.hfd-tier li::before {
  content: "✓";
  color: var(--hf-tg-deep);
  font-weight: 700;
  flex-shrink: 0;
}

/* FAQ accordion */
.hfd-faq {
  background: var(--hf-surface);
  border: 1px solid var(--hf-line);
  border-radius: 16px;
  padding: 20px 24px;
}
.hfd-faq-row {
  display: flex; align-items: flex-start; gap: 18px;
  cursor: pointer;
}
.hfd-faq-q { flex: 1; font-weight: 600; font-size: 16px; line-height: 1.35; }
.hfd-faq-toggle {
  width: 32px; height: 32px;
  border-radius: 999px;
  background: var(--hf-surface-2);
  color: var(--hf-ink-2);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-size: 18px;
}
.hfd-faq.open .hfd-faq-toggle { background: var(--hf-ink); color: white; transform: rotate(45deg); }
.hfd-faq-a { font-size: 14.5px; color: var(--hf-ink-2); line-height: 1.6; margin-top: 14px; max-width: 720px; }

/* Footer */
.hfd-footer {
  background: var(--hf-surface-3);
  padding: 80px 80px 40px;
}
.hfd-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 64px;
  margin-bottom: 40px;
}
.hfd-footer-col h4 { font-size: 13px; font-weight: 700; color: var(--hf-ink); margin-bottom: 14px; letter-spacing: -0.01em; }
.hfd-footer-col a { display: block; font-size: 14px; color: var(--hf-ink-2); text-decoration: none; margin-bottom: 10px; }
.hfd-footer-col a:hover { color: var(--hf-ink); }

/* misc */
.hfd-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 500;
  background: var(--hf-surface);
  border: 1px solid var(--hf-line-2);
  color: var(--hf-ink-2);
}
.hfd-chip.tg  { background: var(--hf-tg-soft); color: var(--hf-tg-deep); border-color: rgba(42,171,238,0.25); font-weight: 600; }
.hfd-chip.ok  { background: rgba(22,160,133,0.1); color: var(--hf-ok); border-color: rgba(22,160,133,0.2); }
.hfd-chip.dot::before { content: ""; width: 6px; height: 6px; border-radius: 999px; background: currentColor; }

.hfd-stack { display: flex; flex-direction: column; gap: 24px; }
.hfd-stack.tight { gap: 12px; }