.page-products {
  --pp-yellow: #F7B500;
  --pp-red: #E8362D;
  --pp-blue: #1F80FF;
  --pp-bg-card: #161616;
  --pp-bg-deep: #0E0E0E;
  --pp-bg-mid: #111111;
  --pp-line: rgba(255, 255, 255, 0.1);
  --pp-soft-yellow: rgba(247, 181, 0, 0.08);
  --pp-soft-blue: rgba(31, 128, 255, 0.14);
  background: var(--c-black);
  color: var(--c-white);
}

/* ===== 页首封面 ===== */
.page-products__header {
  position: relative;
  padding: 44px 0 56px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(232, 54, 45, 0.16) 0%, transparent 42%),
    linear-gradient(315deg, rgba(247, 181, 0, 0.12) 0%, transparent 38%),
    var(--c-black);
}

.page-products__header::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -70px;
  width: 280px;
  height: 280px;
  background: repeating-linear-gradient(
    -45deg,
    rgba(247, 181, 0, 0.14) 0 2px,
    transparent 2px 14px
  );
  pointer-events: none;
}

.page-products__header .breadcrumb {
  margin-bottom: 28px;
}

.page-products__header-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-top: 20px;
}

.page-products__header-copy .lead {
  max-width: 640px;
  margin: 18px 0 0;
  font-size: 17px;
  line-height: 1.72;
  color: var(--c-gray);
}

.page-products .page-header__title {
  margin-top: 14px;
  font-size: clamp(28px, 6vw, 42px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.page-products__header-meta {
  color: var(--c-gray);
}

.page-products__panel {
  position: relative;
  border: 1px solid var(--pp-line);
  border-left: 4px solid var(--pp-yellow);
  background:
    linear-gradient(180deg, rgba(247, 181, 0, 0.05), transparent 60%),
    #141414;
  padding: 18px 20px;
}

.page-products__panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 42px;
  height: 3px;
  background: var(--pp-red);
}

.page-products__panel > p {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
}

.page-products__panel-list {
  margin: 14px 0 0;
  display: grid;
  gap: 8px;
}

.page-products__panel-list > div {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--pp-line);
  font-size: 14px;
}

.page-products__panel-list dt {
  color: var(--c-gray);
}

.page-products__panel-list dd {
  margin: 0;
  color: var(--c-white);
  font-family: var(--font-mono);
}

/* ===== 区块标题 ===== */
.page-products__section-head {
  max-width: 760px;
  margin-bottom: 32px;
}

.page-products__section-head h2 {
  margin: 12px 0 10px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 28px;
  line-height: 1.22;
  letter-spacing: -0.02em;
}

.page-products__section-head .lead {
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-gray);
  margin: 0;
}

/* ===== 核心功能 ===== */
.page-products__features {
  background: linear-gradient(180deg, var(--c-black) 0%, #101010 100%);
}

.page-products__grid-gap {
  gap: 24px;
}

.page-products__feature {
  position: relative;
  padding: 24px 20px;
  background: var(--pp-bg-card);
  border: 1px solid var(--pp-line);
  border-top: 4px solid var(--c-line);
  transition: border-color var(--t-base), transform var(--t-base);
}

.page-products__feature:hover {
  border-top-color: var(--pp-yellow);
  transform: translateY(-2px);
}

.page-products__feature--highlight:hover {
  border-top-color: var(--pp-red);
}

.page-products__feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--pp-yellow);
  color: var(--c-black);
  font-weight: 700;
  transform: skewX(-8deg);
  margin-bottom: 16px;
}

.page-products__feature--highlight .page-products__feature-icon {
  background: var(--pp-red);
  color: var(--c-white);
}

.page-products__feature h3 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 22px;
}

.page-products__feature > p {
  font-size: 15px;
  line-height: 1.68;
  color: var(--c-gray);
  margin: 0;
}

.page-products__feature-list {
  list-style: none;
  margin: 18px 0 20px;
  padding: 0;
  counter-reset: feat;
  display: grid;
  gap: 10px;
}

.page-products__feature-list li {
  counter-increment: feat;
  position: relative;
  padding-left: 34px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-gray);
}

.page-products__feature-list li::before {
  content: counter(feat, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--pp-yellow);
  color: var(--pp-yellow);
  font-family: var(--font-mono);
  font-size: 11px;
  transform: skewX(-8deg);
}

.page-products__feature--highlight .page-products__feature-list li::before {
  border-color: var(--pp-red);
  color: var(--pp-red);
}

.page-products__feature .media {
  margin-top: 4px;
}

/* ===== 迷你红黄牌排行 ===== */
.page-products__mini-chart {
  margin: 0 0 18px;
  padding: 14px;
  background: #101010;
  border: 1px solid var(--pp-line);
  display: grid;
  gap: 10px;
}

.page-products__mini-row {
  display: grid;
  grid-template-columns: 88px 1fr;
  align-items: center;
  gap: 10px;
}

.page-products__mini-team {
  font-size: 12px;
  color: var(--c-gray);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.page-products__mini-track {
  display: flex;
  height: 20px;
  gap: 2px;
}

.page-products__mini-bar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  height: 100%;
  padding-right: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-white);
  transition: filter var(--t-fast);
}

.page-products__mini-bar--red {
  background: var(--pp-red);
}

.page-products__mini-bar--yellow {
  background: var(--pp-yellow);
  color: var(--c-black);
}

.page-products__mini-row:hover .page-products__mini-bar {
  filter: brightness(1.35);
}

/* ===== 新手课程 ===== */
.page-products__course.section--alt {
  background: var(--pp-bg-deep);
}

.page-products__course-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-products__course-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products__course-step {
  position: relative;
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 16px;
  padding-bottom: 28px;
}

.page-products__course-step:last-child {
  padding-bottom: 0;
}

.page-products__course-step::before {
  content: "";
  position: absolute;
  left: 24px;
  top: 46px;
  bottom: 4px;
  width: 2px;
  background: linear-gradient(180deg, var(--pp-yellow) 0%, var(--c-line) 90%);
}

.page-products__course-step:last-child::before {
  display: none;
}

.page-products__course-num {
  z-index: 1;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--pp-yellow);
  color: var(--c-black);
  font-family: var(--font-mono);
  font-weight: 700;
  transform: skewX(-8deg);
}

.page-products__course-body h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 900;
}

.page-products__course-body > p {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--c-gray);
}

.page-products__course-detail {
  margin-top: 12px;
  background: var(--pp-bg-card);
  border: 1px solid var(--pp-line);
}

.page-products__course-detail summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  font-size: 13px;
  color: var(--pp-yellow);
  user-select: none;
}

.page-products__course-detail summary::-webkit-details-marker {
  display: none;
}

.page-products__course-detail summary::before {
  content: "+";
  font-family: var(--font-mono);
  color: var(--c-white);
  font-size: 14px;
  line-height: 1;
}

.page-products__course-detail[open] summary::before {
  content: "−";
}

.page-products__course-detail p {
  margin: 0;
  padding: 0 14px 12px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-gray);
}

.page-products__course-visual {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-products__course-photo {
  background: var(--pp-bg-card);
  border: 1px solid var(--pp-line);
  overflow: hidden;
}

.page-products__course-photo img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-products__course-cta {
  margin-top: 36px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ===== 内容栏目 ===== */
.page-products__channels-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-products__channel-figure {
  background: var(--pp-bg-card);
  border: 1px solid var(--pp-line);
  overflow: hidden;
}

.page-products__channel-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 3;
  object-fit: cover;
}

.page-products__channel-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--pp-line);
  transition: background var(--t-fast), padding var(--t-fast);
}

.page-products__channel-item:hover {
  background: var(--pp-soft-yellow);
  padding-left: 12px;
  padding-right: 12px;
}

.page-products__channel-name {
  margin: 0 0 4px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 900;
}

.page-products__channel-item p {
  margin: 0;
}

.page-products__channel-count {
  color: var(--pp-blue);
  font-size: 13px;
  white-space: nowrap;
}

.page-products__channel-total {
  margin: 20px 0 0;
  line-height: 1.8;
}

.page-products__channel-total .text-mono {
  background: var(--pp-soft-blue);
  color: var(--pp-blue);
  padding: 2px 6px;
}

/* ===== 技术特性 ===== */
.page-products__tech.section--alt {
  background: var(--pp-bg-mid);
}

.page-products__tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 36px;
}

.page-products__tech-item {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 22px 16px 18px;
  background: var(--pp-bg-card);
  border: 1px solid var(--pp-line);
}

.page-products__tech-item::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 56px;
  height: 4px;
  background: var(--pp-yellow);
}

.page-products__tech-item:nth-child(2)::after {
  background: var(--pp-red);
}

.page-products__tech-item:nth-child(3)::after {
  background: var(--pp-blue);
}

.page-products__tech-item:nth-child(4)::after {
  background: var(--pp-yellow);
}

.page-products__tech-value {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--c-white);
}

.page-products__tech-label {
  font-size: 13px;
  color: var(--c-gray);
}

.page-products__tech-detail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  align-items: center;
}

.page-products__tech-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products__tech-list li {
  position: relative;
  padding-left: 24px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--c-gray);
}

.page-products__tech-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 10px;
  height: 10px;
  background: linear-gradient(135deg, var(--pp-red), var(--pp-yellow));
  transform: skewX(-16deg);
}

.page-products__tech-bg img {
  object-fit: cover;
}

.page-products__tech-footer {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--pp-line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  font-size: 14px;
  color: var(--c-gray);
}

.page-products__inline-link {
  color: var(--pp-blue);
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* ===== 底部 CTA ===== */
.page-products__cta-box {
  display: grid;
  gap: 22px;
  justify-items: center;
  text-align: center;
  padding: 34px 24px;
  background:
    linear-gradient(135deg, rgba(232, 54, 45, 0.16), transparent 55%),
    var(--pp-bg-card);
  border: 1px solid var(--pp-line);
}

.page-products__cta-box h2 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 24px;
}

.page-products__cta-box p {
  margin: 0;
  font-size: 15px;
  color: var(--c-gray);
}

.page-products__cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

/* ===== 图片通用 ===== */
.page-products img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ===== 桌面增强 ===== */
@media (min-width: 900px) {
  .page-products__header {
    padding: 68px 0 80px;
  }

  .page-products__header-grid {
    grid-template-columns: 1.3fr 0.7fr;
    align-items: start;
    gap: 48px;
  }

  .page-products__header-copy .lead {
    font-size: 18px;
  }

  .page-products__section-head {
    margin-bottom: 40px;
  }

  .page-products__section-head h2 {
    font-size: 34px;
  }

  .page-products__feature {
    padding: 32px 28px;
  }

  .page-products__feature h3 {
    font-size: 24px;
  }

  .page-products__course-grid {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: start;
  }

  .page-products__channels-grid {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: center;
  }

  .page-products__tech-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }

  .page-products__tech-detail {
    grid-template-columns: 1fr 1.2fr;
    gap: 40px;
  }

  .page-products__tech-value {
    font-size: 40px;
  }

  .page-products__cta-box {
    grid-template-columns: 1fr auto;
    grid-auto-flow: column;
    align-items: center;
    text-align: left;
    padding: 44px 48px;
  }

  .page-products__cta-actions {
    justify-content: flex-end;
  }
}

/* ===== 小屏收紧 ===== */
@media (max-width: 420px) {
  .page-products__mini-row {
    grid-template-columns: 70px 1fr;
  }

  .page-products__tech-grid {
    grid-template-columns: 1fr;
  }

  .page-products__panel {
    padding: 14px 16px;
  }
}