/* ============================================
   Download Page
============================================ */
.page-download { background: var(--bg-base); }
.header-sub { background: rgba(6,9,16,0.5); backdrop-filter: blur(0.6rem); }
.header-sub.scrolled { background: rgba(6,9,16,0.92); }
.accent { color: var(--main-color3); }

/* Main download section (after sub-visual) */
.download-main {
  position: relative;
  padding: 10rem 0 8rem;
  overflow: hidden;
}
.download-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 6rem;
  align-items: center;
}
.download-text .sub-label { display: inline-block; margin-bottom: 2rem; }
.download-title {
  font-size: 5.4rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.2;
  color: #fff;
  margin-bottom: 2.4rem;
}
.download-desc {
  font-size: 1.6rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 3.5rem;
}

.store-row {
  display: flex;
  gap: 1.2rem;
  margin-bottom: 3rem;
}
.store-btn {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 1.4rem 2.4rem;
  border-radius: 1rem;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.15);
  transition: var(--transition);
  min-width: 18rem;
}
.store-btn:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.3);
  transform: translateY(-2px);
}
.store-android { background: var(--main-color); border-color: var(--main-color); }
.store-android:hover { background: var(--main-color3); border-color: var(--main-color3); }
.store-tag {
  font-family: var(--font-en);
  font-size: 1.05rem;
  font-weight: 500;
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.04em;
}
.store-name {
  font-family: var(--font-en);
  font-size: 1.7rem;
  font-weight: 600;
  color: #fff;
  letter-spacing: -0.01em;
}
.store-android .store-tag { color: rgba(255,255,255,0.85); }

.qr-row {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.qr-box {
  width: 10rem;
  height: 10rem;
  padding: 1rem;
  border-radius: 1rem;
  background: #fff;
}
.qr-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0.2rem;
  width: 100%;
  height: 100%;
}
.qr-grid span { background: #000; border-radius: 0.1rem; }
.qr-grid span:nth-child(3n) { background: transparent; }
.qr-grid span:nth-child(5n) { background: transparent; }
.qr-grid span:nth-child(7n) { background: #000; }
.qr-desc {
  font-size: 1.3rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.55;
}

.download-mock { display: flex; justify-content: center; }
.mock-phone {
  position: relative;
  width: 28rem;
  aspect-ratio: 9 / 19;
  border-radius: 3.4rem;
  background: #0a0f1c;
  border: 2px solid rgba(255,255,255,0.12);
  padding: 0.8rem;
  box-shadow:
    0 30px 80px rgba(0,0,0,0.6),
    0 0 80px rgba(39,102,248,0.25);
}
.mock-screen {
  width: 100%; height: 100%;
  border-radius: 2.6rem;
  background-size: cover;
  background-position: center;
}
.mock-notch {
  position: absolute;
  top: 1rem;
  left: 50%;
  transform: translateX(-50%);
  width: 9rem;
  height: 2.4rem;
  border-radius: 1.4rem;
  background: #060910;
}

/* Features */
.download-features { padding: 8rem 0; }
.df-head { text-align: center; margin-bottom: 5rem; }
.df-head .sub-label { display: inline-block; margin-bottom: 1.8rem; }
.df-head .section-title { font-size: 4rem; font-weight: 700; }
.df-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.8rem;
}
.df-card {
  padding: 4rem 3rem;
  border-radius: 2rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  transition: var(--transition);
}
.df-card:hover {
  background: var(--glass-bg-hover);
  border-color: rgba(255,255,255,0.18);
  transform: translateY(-4px);
}
.df-num {
  display: inline-block;
  font-size: 1.4rem;
  font-weight: 500;
  color: var(--main-color3);
  letter-spacing: 0.04em;
  margin-bottom: 1.6rem;
}
.df-card strong {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.03em;
  margin-bottom: 1.2rem;
}
.df-card p {
  font-size: 1.4rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Numbers */
.download-numbers { padding: 6rem 0 8rem; }
.dn-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}
.dn-item {
  padding: 3.4rem 2.6rem;
  border-radius: 2rem;
  background: linear-gradient(135deg, rgba(39,102,248,0.1), rgba(23,81,217,0.04));
  border: 1px solid rgba(39,102,248,0.18);
  text-align: center;
}
.dn-num {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.5rem;
  font-size: 5.4rem;
  font-weight: 300;
  letter-spacing: -0.04em;
  color: #fff;
  line-height: 1;
  margin-bottom: 1rem;
}
.dn-num em {
  font-style: normal;
  font-size: 1.6rem;
  font-weight: 500;
  color: rgba(255,255,255,0.6);
}
.dn-item p {
  font-size: 1.3rem;
  color: rgba(255,255,255,0.7);
}

/* FAQ */
.download-faq { padding: 8rem 0; }
.faq-head { text-align: center; margin-bottom: 4rem; }
.faq-head .sub-label { display: inline-block; margin-bottom: 1.8rem; }
.faq-head .section-title { font-size: 4rem; font-weight: 700; }
.faq-list {
  max-width: 96rem;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.faq-q {
  display: flex;
  align-items: center;
  gap: 2rem;
  width: 100%;
  padding: 2.4rem 0;
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  transition: var(--transition);
}
.faq-q:hover .faq-q-text { color: var(--main-color3); }
.faq-q-mark {
  font-size: 2rem;
  font-weight: 600;
  color: var(--main-color3);
  letter-spacing: -0.02em;
}
.faq-q-text {
  flex: 1;
  font-size: 1.65rem;
  font-weight: 500;
  color: #fff;
  letter-spacing: -0.03em;
  transition: var(--transition);
}
.faq-toggle {
  font-size: 2rem;
  font-weight: 300;
  color: rgba(255,255,255,0.5);
  transition: transform 0.4s;
}
.faq-item.is-open .faq-toggle { transform: rotate(45deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s cubic-bezier(.5,0,.1,1);
}
.faq-item.is-open .faq-a { max-height: 30rem; }
.faq-a p {
  padding: 0 0 2.4rem 5rem;
  font-size: 1.4rem;
  color: var(--text-secondary);
  line-height: 1.75;
}
.faq-a a { color: var(--main-color3); transition: var(--transition); }
.faq-a a:hover { color: #fff; }

/* B2B CTA */
.download-cta { padding: 6rem 0 12rem; text-align: center; }
.dl-cta-inner {
  max-width: 70rem;
  margin: 0 auto;
  padding: 6rem 4rem;
  border-radius: 3rem;
  background: linear-gradient(135deg, rgba(39,102,248,0.18), rgba(23,81,217,0.06));
  border: 1px solid rgba(39,102,248,0.25);
}
.dl-cta-inner .sub-label { display: inline-block; margin-bottom: 1.6rem; }
.dl-cta-inner .cta-title {
  font-size: 3.4rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: #fff;
  margin-bottom: 1.4rem;
}
.dl-cta-desc {
  font-size: 1.5rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 2.4rem;
}

/* Responsive */
@media (max-width: 1024px) {
  .download-grid { grid-template-columns: 1fr; gap: 4rem; }
  .download-mock { justify-content: center; margin-top: 1rem; }
  .df-grid { grid-template-columns: 1fr; }
  .dn-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .download-title { font-size: 3.4rem; }
  .store-row { flex-direction: column; }
  .store-btn { min-width: 0; }
  .df-head .section-title,
  .faq-head .section-title { font-size: 2.8rem; }
  .dn-grid { grid-template-columns: 1fr; }
  .dn-num { font-size: 4.4rem; }
  .dl-cta-inner { padding: 4rem 2.4rem; }
  .dl-cta-inner .cta-title { font-size: 2.4rem; }
}