/* ===== 产品详情页公共样式 — OXYZ-style layout ===== */

/* --- Banner --- */
.detail-banner {
  position: relative; width: 100%; height: 480px; margin-top: var(--header-height, 72px); overflow: hidden;
}
.detail-banner-bg {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
}
.detail-banner .container {
  position: relative; z-index: 1; display: flex; flex-direction: column;
  justify-content: center; height: 100%;
  padding-left: var(--page-padding); padding-right: var(--page-padding);
}
.detail-banner-label {
  display: inline-block; font-size: 14px; font-weight: 500;
  color: var(--color-primary); letter-spacing: 2px;
  text-transform: uppercase; margin-bottom: 16px;
}
.detail-banner h1 {
  font-size: 56px; font-weight: 400; color: var(--color-text-1);
  margin-bottom: 20px; letter-spacing: 1px; line-height: 1.2;
}
.detail-banner p {
  font-size: 18px; font-weight: 400; color: var(--color-text-2);
  max-width: 640px; line-height: 1.8;
}
@media (max-width: 1024px) {
  .detail-banner { height: auto; min-height: 620px; padding-bottom: 48px; }
  .detail-banner .container { height: auto; min-height: 300px; padding-top: 96px; padding-bottom: 24px; }
}

@media (max-width: 767px) {
  .detail-banner { min-height: auto; }
  .detail-banner .container { padding-top: 72px; }
}

/* 典型应用场景模块 — 已移除 */
.product-scenarios {
  display: none;
}

/* --- All product sections use consistent padding --- */
.video-advantages,
.product-scenarios,
.product-timeline,
.product-faq {
  padding: var(--section-padding) 0;
}

/* Alternate backgrounds */
.video-advantages { background: #fff; }
.product-scenarios { background: #fff; }
.product-timeline { background: var(--color-sand); position: relative; }
.product-faq { background: #fff; }

/* --- Advantages Grid (inside section-right) --- */
.advantages-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
}
.advantage-card {
  padding: 80px 24px;
  border: 1px solid var(--color-border);
  background: #fff;
  transition: border-color 0.3s;
}
.advantage-card:hover { border-color: var(--color-text-1); }
.advantage-card h4 { font-size: 18px; font-weight: 500; color: var(--color-text-1); margin-bottom: 10px; }
.advantage-card p { font-size: 15px; color: var(--color-text-3); line-height: 1.7; }

/* --- Feature Blocks (alternating left-right) --- */
.features-section { padding: var(--section-padding) 0 0; }
.feature-block { padding: var(--section-padding) 0; }
.feature-block .container {
  display: flex; align-items: center; gap: 80px;
}
.feature-text { flex: 1; min-width: 0; }
.feature-text h3 { font-size: 24px; font-weight: 500; color: var(--color-text-1); margin-bottom: 20px; }
.feature-text p { font-size: 16px; color: var(--color-text-2); line-height: 1.8; margin-bottom: 12px; }
.feature-btns { display: flex; gap: 12px; margin-top: 28px; }
.btn-primary {
  display: inline-flex; align-items: center; justify-content: space-between;
  gap: 20px; min-width: 140px;
  background: var(--color-primary); color: #fff; padding: 10px 20px; font-size: 13px;
  font-weight: 500; border: 1px solid var(--color-primary); cursor: pointer; transition: background 0.3s; text-decoration: none;
}
.btn-primary::after {
  content: "→"; font-size: 14px; transition: transform 0.3s ease;
}
.btn-primary:hover::after { transform: translateX(6px); }
.btn-outline-blue {
  display: inline-flex; align-items: center; justify-content: space-between;
  gap: 20px; min-width: 140px;
  background: #fff; color: var(--color-text-1); padding: 10px 20px; font-size: 13px;
  font-weight: 500; border: 1px solid var(--color-border); cursor: pointer; transition: background 0.3s; text-decoration: none;
}
.btn-outline-blue::after {
  content: "→"; font-size: 14px; color: var(--color-text-3); transition: transform 0.3s ease;
}
.btn-outline-blue:hover { background: var(--color-sand); }
.btn-outline-blue:hover::after { transform: translateX(6px); }
.feature-image { flex: 1; min-width: 0; }
.feature-image img { width: 100%; box-shadow: 0 8px 30px rgba(0,0,0,0.08); }

.feature-block.dark-blue { background: var(--color-sand); }
.feature-block.dark-blue .feature-text h3 { color: var(--color-text-1); }
.feature-block.dark-blue .feature-text p { color: var(--color-text-2); }
.feature-block.reversed .container { flex-direction: row-reverse; }

/* --- Stats CTA --- */
.stats-cta {
  position: relative; overflow: hidden; padding: var(--section-padding) 0;
}
.stats-cta-video {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  object-fit: cover; z-index: 0;
}
.stats-cta-overlay {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(8, 11, 12, 0.85); z-index: 1;
}
.stats-cta-inner {
  padding: 0 var(--page-padding);
  position: relative; z-index: 2;
}
.stats-cta-top {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 48px;
}
.stats-cta-top h2 { font-size: 42px; font-weight: 600; color: #fff; margin: 0; }
.stats-cta-btns { display: flex; gap: 12px; }
.stats-cta-btns .btn-outline {
  display: inline-flex; align-items: center; padding: 10px 28px;
  border: 1px solid rgba(255,255,255,0.4); color: #fff;
  font-size: 14px; font-weight: 500; transition: all .25s ease; text-decoration: none;
}
.stats-cta-btns .btn-outline:hover {
  border-color: #fff; background: rgba(255,255,255,0.1);
}
.stats-cta-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.stats-cta-item {
  padding: 32px 28px; border: 1px solid rgba(255,255,255,0.12); text-align: center;
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(6px);
}
.stats-cta-num { font-size: 36px; font-weight: 700; color: #fff; margin-bottom: 8px; font-family: 'D-DIN', var(--font-num); }
.stats-cta-label { font-size: 14px; color: rgba(255,255,255,0.55); }

/* --- Scenarios: 4×2 image-first grid (full-width, no split) --- */
.product-scenarios .section-split { display: block; }
.product-scenarios .section-left { max-width: 100%; flex: none; position: static; margin-bottom: 40px; }
.scenario-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.scenario-card {
  background: #fff; border: 1px solid var(--color-border); border-radius: 8px;
  position: relative; transition: all 0.3s ease; overflow: hidden;
}
.scenario-card:hover {
  transform: translateY(-4px); border-color: var(--color-primary);
  box-shadow: 0 8px 24px rgba(3,99,233,0.08);
}
.scenario-card-img {
  width: 100%; aspect-ratio: 4/3; object-fit: cover; display: block;
  background: var(--color-sand);
}
.scenario-card-body {
  padding: 16px;
}
.scenario-card h4 {
  font-size: 15px; font-weight: 500; color: var(--color-text-1);
  margin: 0; text-align: center;
}
.scenario-card p { display: none; }
.scenario-tags { display: none; }

/* --- Timeline V2: Vertical list with bottom border --- */
.timeline-v {
  display: flex; flex-direction: column; gap: 0;
}
.timeline-v-item {
  display: flex; align-items: flex-start; gap: 28px;
  padding: 32px 0;
  border-bottom: 1px solid var(--color-text-1);
  position: relative;
}
.timeline-v-item:first-child { padding-top: 0; }
.timeline-v-num {
  font-family: 'D-DIN', monospace;
  font-size: 32px; font-weight: 700;
  color: var(--color-text-4);
  line-height: 1; min-width: 52px;
  padding-top: 2px;
  transition: color 0.3s ease;
}
.timeline-v-item:hover .timeline-v-num { color: var(--color-text-1); }
.timeline-v-content { flex: 1; }
.timeline-v-content h4 {
  font-size: 18px; font-weight: 500; color: var(--color-text-1);
  margin: 0 0 8px;
}
.timeline-v-content p {
  font-size: 15px; color: var(--color-text-3); line-height: 1.7; margin: 0;
}

/* --- FAQ (inside section-right) --- */
.faq-list {
  display: flex; flex-direction: column; gap: 12px;
}
.faq-item {
  background: #fff; border: 1px solid var(--color-border);
  overflow: hidden; transition: all 0.3s ease;
}
.faq-item:hover { border-color: var(--color-primary); }
.faq-q {
  padding: 20px 24px; font-size: 16px; font-weight: 500; color: var(--color-text-1);
  display: flex; justify-content: space-between; align-items: center; cursor: default;
  user-select: none;
}
.faq-q::after {
  content: "+"; font-size: 24px; font-weight: 300; color: var(--color-text-3);
  transition: transform 0.3s ease; line-height: 1;
}
.faq-item:hover .faq-q::after { transform: rotate(45deg); color: var(--color-primary); }
.faq-a {
  max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 24px; font-size: 14px; color: var(--color-text-2); line-height: 1.8;
}
.faq-item:hover .faq-a { max-height: 400px; padding: 0 24px 20px; }

/* --- Sub-page Footer (unified with homepage) --- */
.site-footer { background: #050709; color: var(--color-text-2); }
.site-footer-inner { padding: 60px var(--page-padding) 32px; }
.site-footer-top { display: flex; gap: 60px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.site-footer-col { display: flex; flex-direction: column; gap: 10px; }
.site-footer-col h6 {
  font-size: 14px; font-weight: 600; color: #fff; margin-bottom: 8px;
  letter-spacing: 0.05em; text-transform: uppercase;
}
.site-footer-col a {
  font-size: 14px; color: var(--color-text-2); text-decoration: none; transition: color 0.2s;
}
.site-footer-col a:hover { color: #fff; }
.site-footer-col p { font-size: 14px; color: var(--color-text-2); }
.site-footer-qr { align-items: flex-start; }
.site-footer-qr img { margin-top: 8px; }
.site-footer-bottom { padding-top: 24px; }
.site-footer-bottom p { font-size: 12px; color: rgba(255,255,255,0.3); }
.site-footer-bottom a { color: rgba(255,255,255,0.3); text-decoration: none; }
.site-footer-bottom a:hover { color: var(--color-text-2); }

/* --- Responsive --- */
@media (max-width: 1024px) {
  .detail-banner { height: 360px; }
  .detail-banner h1 { font-size: 36px; }
  .advantages-grid { grid-template-columns: 1fr; }
  .advantage-card { padding: 48px 24px; }
  .feature-block .container { flex-direction: column; gap: 32px; }
  .feature-block.reversed .container { flex-direction: column; }
  .stats-cta-top { flex-direction: column; gap: 24px; text-align: center; }
  .stats-cta-top h2 { font-size: 32px; }
  .stats-cta-btns { justify-content: center; }
  .stats-cta-grid { grid-template-columns: repeat(2, 1fr); }
  .site-footer-top { flex-wrap: wrap; gap: 40px; }
  .scenario-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767px) {
  .detail-banner { height: 280px; }
  .detail-banner h1 { font-size: 28px; }
  .detail-banner .container { padding: 0 16px; }
  .feature-block .container { padding: 0 16px; }
  .stats-cta-inner { padding: 0 16px; }
  .stats-cta-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stats-cta-num { font-size: 28px; }
  .site-footer-inner { padding: 40px 16px 24px; }
  .site-footer-top { flex-direction: column; gap: 32px; }
  .timeline-v-item { gap: 16px; padding: 24px 0; }
  .timeline-v-num { font-size: 24px; min-width: 36px; }
  .advantage-card { padding: 32px 20px; }
  .advantage-card h4 { font-size: 16px; }
  .faq-q { padding: 16px 20px; }
  .scenario-grid { grid-template-columns: 1fr; }
}

/* --- Xinqi product redesign: 3D hero + bento capability layout --- */
.detail-banner {
  height: 560px;
  background: #f7f9fc;
}
.detail-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(90deg, rgba(255,255,255,0.96) 0%, rgba(255,255,255,0.86) 36%, rgba(255,255,255,0.22) 72%, rgba(255,255,255,0) 100%),
    linear-gradient(180deg, rgba(255,255,255,0.18) 0%, rgba(255,255,255,0.86) 100%);
  pointer-events: none;
}
.detail-banner-bg {
  filter: saturate(0.96) contrast(1.02);
}
.detail-banner .container {
  z-index: 2;
}
.detail-banner-label {
  color: var(--color-primary);
  letter-spacing: 0;
  font-weight: 600;
}
.detail-banner h1 {
  max-width: 680px;
  font-size: clamp(40px, 5vw, 72px);
  font-weight: 500;
  letter-spacing: 0;
}
.detail-banner p {
  max-width: 580px;
  color: #384152;
}

.video-advantages,
.product-timeline,
.product-faq {
  padding: 96px 0;
}
.video-advantages {
  border-bottom: 1px solid var(--color-border);
}
.video-advantages .section-split {
  display: block;
}
.video-advantages .section-left {
  position: static;
  max-width: none;
}
.video-advantages .section-left-sticky {
  position: static;
}
.video-advantages .section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.74fr) minmax(320px, 0.38fr);
  gap: 48px;
  align-items: end;
  margin-bottom: 36px;
}
.video-advantages .section-title {
  max-width: 820px;
  font-size: clamp(34px, 4.2vw, 58px);
  line-height: 1.08;
  letter-spacing: 0;
}
.video-advantages .section-desc {
  justify-self: end;
  max-width: 420px;
  color: var(--color-text-2);
  text-align: right;
}
.video-advantages .advantages-grid {
  counter-reset: adv-card;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  border: 1px solid var(--color-border);
  background: var(--color-border);
}
.video-advantages .advantage-card {
  counter-increment: adv-card;
  min-height: 268px;
  padding: 28px;
  border: 0;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.96), rgba(247,249,252,0.92)),
    #fff;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.video-advantages .advantage-card::before {
  content: "0" counter(adv-card);
  width: 44px;
  height: 44px;
  border: 1px solid rgba(233,79,152,0.22);
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font: 600 13px/1 "D-DIN", monospace;
  background: rgba(233,79,152,0.06);
}
.video-advantages .advantage-card::after {
  display: none;
}
.video-advantages .advantage-card:hover {
  border-color: transparent;
  background: #fff;
}
.video-advantages .advantage-card h4 {
  margin: auto 0 12px;
  font-size: 20px;
  line-height: 1.35;
}
.video-advantages .advantage-card p {
  color: #5d6675;
}
.detail-banner p,
.video-advantages .advantage-card p,
.feature-text h3,
.feature-text p {
  overflow-wrap: anywhere;
  word-break: break-word;
}

.features-section {
  counter-reset: feature-card;
  padding: 0;
  background: #f6f8fb;
  border-top: 1px solid var(--color-border);
}
.feature-block {
  counter-increment: feature-card;
  padding: 0;
  border-bottom: 1px solid var(--color-border);
  background: transparent;
}
.feature-block.dark-blue {
  background: transparent;
}
.feature-block .auto {
  padding-left: var(--page-padding);
  padding-right: var(--page-padding);
}
.feature-block .container {
  max-width: 1320px;
  margin: 0 auto;
  padding: 56px 0;
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: 56px;
  align-items: center;
  min-height: 440px;
  border-left: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border);
}
.feature-block.reversed .container {
  grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
}
.feature-block.reversed .feature-text {
  order: 2;
}
.feature-block.reversed .feature-image {
  order: 1;
}
.feature-text {
  padding: 0 44px;
}
.feature-text::before {
  content: "CAPABILITY 0" counter(feature-card);
  display: block;
  margin-bottom: 18px;
  color: var(--color-primary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0;
}
.feature-text h3 {
  max-width: 560px;
  font-size: clamp(24px, 2.7vw, 40px);
  line-height: 1.16;
  font-weight: 500;
  letter-spacing: 0;
}
.feature-text p {
  max-width: 560px;
  color: #4c5563;
}
.feature-image {
  padding: 0 44px;
}
.feature-image img {
  display: block;
  width: 100%;
  border: 1px solid rgba(159, 172, 190, 0.26);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 28px 90px rgba(36, 48, 72, 0.12);
}
.feature-btns {
  flex-wrap: wrap;
}
.btn-primary,
.btn-outline-blue {
  border-radius: 8px;
}

@media (max-width: 1024px) {
  .detail-banner {
    height: 460px;
    min-height: 460px;
    padding-bottom: 0;
  }
  .detail-banner .container {
    min-height: 460px;
    padding-top: 56px;
    padding-bottom: 0;
  }
  .video-advantages,
  .product-timeline,
  .product-faq {
    padding: 72px 0;
  }
  .video-advantages .section-heading {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .video-advantages .section-desc {
    justify-self: start;
    max-width: 620px;
    text-align: left;
  }
  .video-advantages .advantages-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .feature-block .container,
  .feature-block.reversed .container {
    grid-template-columns: 1fr;
    gap: 28px;
    min-height: 0;
    padding: 46px 0;
  }
  .feature-block.reversed .feature-text,
  .feature-block.reversed .feature-image {
    order: 0;
  }
  .feature-text,
  .feature-image {
    padding: 0 32px;
  }
}

@media (max-width: 767px) {
  .detail-banner {
    height: 420px;
    min-height: 420px;
  }
  .detail-banner::after {
    background:
      linear-gradient(90deg, rgba(255,255,255,0.96) 0%, rgba(255,255,255,0.76) 68%, rgba(255,255,255,0.32) 100%),
      linear-gradient(180deg, rgba(255,255,255,0.18) 0%, rgba(255,255,255,0.92) 100%);
  }
  .detail-banner .container {
    min-height: 420px;
    padding: 48px 18px 0;
  }
  .detail-banner p {
    font-size: 15px;
    line-height: 1.7;
  }
  .video-advantages .advantages-grid {
    grid-template-columns: 1fr;
    width: 100%;
  }
  .video-advantages .advantage-card {
    min-height: 210px;
    padding: 24px;
  }
  .feature-block .auto {
    padding-left: 16px;
    padding-right: 16px;
  }
  .feature-block .container {
    border-left: 0;
    border-right: 0;
    padding: 38px 0;
  }
  .feature-text,
  .feature-image {
    padding: 0;
  }
  .feature-text h3 {
    font-size: 24px;
  }
  .detail-banner p,
  .video-advantages .advantage-card p,
  .feature-text h3,
  .feature-text p {
    line-break: anywhere;
    word-break: break-all;
  }
}