.page-products {
  --page-accent: #FF6B35;
  --page-accent-grad: linear-gradient(135deg, #FF6B35, #FF8C5A);
  --page-card-bg: #122A4A;
  --page-text: #FFFFFF;
  --page-text-muted: #B0B8C4;
  --page-primary: #0A1F3F;
  --page-font-heading: "Montserrat Black", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial Black, sans-serif;
  --page-font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  --page-font-number: "Courier New", Courier, monospace;
  --page-spacing: 1rem;
  --page-radius: 1rem;
  --page-transition: 0.6s cubic-bezier(0.23, 1, 0.32, 1);

  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  background: var(--page-primary);
  color: var(--page-text);
  font-family: var(--page-font-body);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* ===== 背景装饰斜线 ===== */
.page-products__bg-decor {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    linear-gradient(135deg, transparent 48%, rgba(255,107,53,0.04) 48%, rgba(255,107,53,0.04) 52%, transparent 52%),
    linear-gradient(225deg, transparent 48%, rgba(255,107,53,0.03) 48%, rgba(255,107,53,0.03) 52%, transparent 52%);
  background-size: 80% 80%, 70% 70%;
  background-position: 0 0, 100% 100%;
  background-repeat: no-repeat;
}

/* ===== 首屏 ===== */
.page-products__hero {
  position: relative;
  z-index: 1;
  padding: 2rem var(--page-spacing) 3rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  background:
    linear-gradient(165deg, transparent 55%, rgba(255,107,53,0.06) 55%, rgba(255,107,53,0.06) 58%, transparent 58%),
    var(--page-primary);
  border-bottom: 2px solid rgba(255,107,53,0.15);
}

.page-products__breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--page-text-muted);
  margin-bottom: 0.5rem;
}

.page-products__breadcrumb a {
  color: var(--page-text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.page-products__breadcrumb a:hover,
.page-products__breadcrumb a:focus-visible {
  color: var(--page-accent);
  outline: none;
}

.page-products__breadcrumb-sep {
  color: var(--page-accent);
  font-weight: bold;
}

.page-products__hero-title {
  font-family: var(--page-font-heading);
  font-size: clamp(2.5rem, 10vw, 5rem);
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--page-text);
  margin: 0;
  text-transform: uppercase;
  position: relative;
}

.page-products__hero-title::after {
  content: '';
  display: inline-block;
  width: 0.35em;
  height: 0.08em;
  background: var(--page-accent);
  margin-left: 0.15em;
  vertical-align: middle;
}

.page-products__hero-subtitle {
  font-size: clamp(0.95rem, 2.5vw, 1.25rem);
  color: var(--page-text-muted);
  margin: 0;
  max-width: 32em;
  line-height: 1.5;
  letter-spacing: 0.02em;
}

.page-products__hero-index {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

/* ===== 按钮 ===== */
.page-products__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.4rem;
  font-family: var(--page-font-body);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--page-text);
  background: var(--page-accent-grad);
  border: none;
  border-radius: 2rem;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  box-shadow: 0 4px 14px rgba(255,107,53,0.25);
}

.page-products__btn:hover,
.page-products__btn:focus-visible {
  transform: scale(1.05);
  box-shadow: 0 6px 24px rgba(255,107,53,0.35);
  outline: 2px solid var(--page-accent);
  outline-offset: 2px;
}

.page-products__btn--ghost {
  background: transparent;
  border: 2px solid var(--page-accent);
  color: var(--page-accent);
  box-shadow: none;
}

.page-products__btn--ghost:hover,
.page-products__btn--ghost:focus-visible {
  background: var(--page-accent);
  color: var(--page-text);
  box-shadow: 0 4px 14px rgba(255,107,53,0.25);
}

/* ===== 服务网格 ===== */
.page-products__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  padding: 2rem var(--page-spacing) 3rem;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
}

/* ===== 卡片 ===== */
.page-products__card {
  perspective: 1200px;
  position: relative;
  border-radius: var(--page-radius);
  min-height: 320px;
}

.page-products__card--wide {
  grid-column: 1 / -1;
}

.page-products__card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 320px;
  transition: transform var(--page-transition);
  transform-style: preserve-3d;
  cursor: pointer;
  border-radius: var(--page-radius);
}

.page-products__card:hover .page-products__card-inner,
.page-products__card-inner:focus-within {
  transform: rotateY(180deg);
}

.page-products__card-front,
.page-products__card-back {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 1.5rem;
  border-radius: var(--page-radius);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  overflow: hidden;
  text-align: center;
}

.page-products__card-front {
  background: var(--page-card-bg);
  border: 1px solid rgba(255,107,53,0.12);
  gap: 0.75rem;
}

.page-products__card-front-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(135deg, transparent 45%, rgba(255,107,53,0.05) 45%, rgba(255,107,53,0.05) 50%, transparent 50%),
    linear-gradient(225deg, transparent 48%, rgba(255,107,53,0.03) 48%, rgba(255,107,53,0.03) 52%, transparent 52%);
  background-size: 60% 100%, 80% 100%;
  background-position: 0 0, 100% 0;
  background-repeat: no-repeat;
  z-index: 0;
}

.page-products__card-title {
  font-family: var(--page-font-heading);
  font-size: clamp(1.25rem, 4vw, 1.75rem);
  line-height: 1.1;
  color: var(--page-text);
  margin: 0;
  position: relative;
  z-index: 1;
}

.page-products__card-stat {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.15em;
  position: relative;
  z-index: 1;
}

.page-products__stat-number {
  font-family: var(--page-font-number);
  font-size: clamp(3.5rem, 12vw, 6rem);
  font-weight: 900;
  line-height: 1;
  color: var(--page-accent);
  letter-spacing: -0.03em;
}

.page-products__stat-unit {
  font-family: var(--page-font-heading);
  font-size: clamp(1rem, 3vw, 1.5rem);
  color: var(--page-text-muted);
  margin-left: 0.2em;
}

.page-products__card-tagline {
  font-size: clamp(0.8rem, 1.8vw, 0.95rem);
  color: var(--page-text-muted);
  margin: 0;
  position: relative;
  z-index: 1;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.page-products__card-icon-wrap {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid rgba(255,107,53,0.2);
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,107,53,0.06);
}

.page-products__card-icon-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-products__card-front-img {
  width: 60%;
  max-width: 300px;
  height: auto;
  object-fit: contain;
  border-radius: 0.5rem;
  opacity: 0.25;
  position: absolute;
  bottom: 0.5rem;
  right: 0.5rem;
  pointer-events: none;
  z-index: 0;
}

.page-products__card-back {
  background: var(--page-card-bg);
  border: 1px solid rgba(255,107,53,0.25);
  transform: rotateY(180deg);
  justify-content: flex-start;
  padding: 1.5rem;
  overflow-y: auto;
}

.page-products__card-back-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  max-width: 480px;
}

.page-products__card-back-title {
  font-family: var(--page-font-heading);
  font-size: clamp(1.1rem, 3vw, 1.5rem);
  color: var(--page-accent);
  margin: 0;
  line-height: 1.2;
}

.page-products__card-back-desc {
  font-size: 0.9rem;
  color: var(--page-text-muted);
  line-height: 1.6;
  margin: 0;
  text-align: center;
  max-width: 36em;
}

.page-products__card-back-img {
  width: 100%;
  max-width: 400px;
  height: auto;
  object-fit: contain;
  border-radius: 0.5rem;
  border: 1px solid rgba(255,107,53,0.1);
  margin: 0.25rem 0;
}

/* ===== 品牌氛围 ===== */
.page-products__atmosphere {
  position: relative;
  z-index: 1;
  padding: 2rem var(--page-spacing) 3rem;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
}

.page-products__atmosphere-inner {
  position: relative;
  border-radius: var(--page-radius);
  overflow: hidden;
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--page-card-bg);
  border: 1px solid rgba(255,107,53,0.1);
}

.page-products__atmosphere-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.35;
}

.page-products__atmosphere-quote {
  position: relative;
  z-index: 1;
  font-family: var(--page-font-heading);
  font-size: clamp(2rem, 8vw, 4rem);
  line-height: 1.1;
  color: var(--page-text);
  text-align: center;
  padding: 1.5rem;
  margin: 0;
  letter-spacing: 0.06em;
  text-shadow: 0 4px 24px rgba(0,0,0,0.5);
  background: linear-gradient(135deg, var(--page-text) 40%, var(--page-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== 平板及以上 ===== */
@media (min-width: 640px) {
  .page-products__hero {
    padding: 3rem var(--page-spacing) 4rem;
  }

  .page-products__hero-title {
    font-size: clamp(3.5rem, 8vw, 5rem);
  }

  .page-products__grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    padding: 3rem var(--page-spacing) 4rem;
  }

  .page-products__card--wide {
    grid-column: 1 / -1;
  }

  .page-products__card {
    min-height: 360px;
  }

  .page-products__card-inner {
    min-height: 360px;
  }

  .page-products__card-front,
  .page-products__card-back {
    padding: 2rem;
  }

  .page-products__card-front-img {
    width: 45%;
    max-width: 240px;
  }

  .page-products__card-icon-wrap {
    width: 100px;
    height: 100px;
  }

  .page-products__atmosphere {
    padding: 3rem var(--page-spacing) 4rem;
  }

  .page-products__atmosphere-inner {
    min-height: 360px;
  }

  .page-products__atmosphere-quote {
    font-size: clamp(2.5rem, 6vw, 4rem);
  }
}

/* ===== 桌面 ===== */
@media (min-width: 1024px) {
  .page-products__hero {
    padding: 4rem 2rem 5rem;
    align-items: flex-start;
  }

  .page-products__hero-title {
    font-size: 5rem;
  }

  .page-products__hero-subtitle {
    font-size: 1.25rem;
  }

  .page-products__grid {
    grid-template-columns: 1.2fr 0.8fr 0.8fr;
    gap: 2rem;
    padding: 4rem 2rem 5rem;
  }

  .page-products__card--wide {
    grid-column: 1 / -1;
  }

  .page-products__card {
    min-height: 400px;
  }

  .page-products__card-inner {
    min-height: 400px;
  }

  .page-products__card-front,
  .page-products__card-back {
    padding: 2.5rem;
  }

  .page-products__card-front-img {
    width: 35%;
    max-width: 200px;
  }

  .page-products__card-icon-wrap {
    width: 120px;
    height: 120px;
  }

  .page-products__card-back-content {
    max-width: 520px;
  }

  .page-products__atmosphere {
    padding: 4rem 2rem 5rem;
  }

  .page-products__atmosphere-inner {
    min-height: 440px;
  }

  .page-products__atmosphere-quote {
    font-size: 4rem;
  }
}

/* ===== 宽桌面 ===== */
@media (min-width: 1280px) {
  .page-products__grid {
    grid-template-columns: 1.4fr 0.9fr 0.9fr;
    gap: 2.5rem;
  }
}

/* ===== 减少动效 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-products__card-inner {
    transition: none;
  }

  .page-products__card:hover .page-products__card-inner,
  .page-products__card-inner:focus-within {
    transform: none;
  }

  .page-products__card-back {
    transform: none;
    position: relative;
    display: block;
    backface-visibility: visible;
    -webkit-backface-visibility: visible;
    border-top: 2px solid var(--page-accent);
    margin-top: 0.5rem;
  }

  .page-products__card-front {
    position: relative;
    backface-visibility: visible;
    -webkit-backface-visibility: visible;
  }

  .page-products__card-inner {
    display: flex;
    flex-direction: column;
    min-height: auto;
  }

  .page-products__btn {
    transition: none;
  }

  .page-products__btn:hover,
  .page-products__btn:focus-visible {
    transform: none;
  }
}