/* ========== 应用中心：页面专属样式 ========== */
.page-products {
  --app-bg-soft: rgba(255, 255, 255, 0.04);
  --app-border-soft: rgba(255, 255, 255, 0.08);
  --app-accent-gradient: linear-gradient(90deg, var(--c-primary), var(--c-gold));
  background: var(--c-bg);
  color: var(--c-text);
}

/* 首屏 */
.page-products__hero {
  position: relative;
  padding: 96px 0 48px;
  background:
    radial-gradient(ellipse at 12% 18%, rgba(230, 52, 42, 0.28), transparent 48%),
    radial-gradient(ellipse at 88% 8%, rgba(247, 181, 0, 0.2), transparent 45%),
    var(--c-bg-deep);
  border-bottom: 1px solid rgba(247, 181, 0, 0.18);
}

.page-products__hero .breadcrumb {
  margin-bottom: 56px;
}

.page-products__hero-grid {
  display: grid;
  gap: 24px;
  margin-bottom: 40px;
}

.page-products__hero-title h1 {
  margin: 14px 0 10px;
  font-family: var(--font-display);
  font-size: clamp(36px, 8vw, 64px);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--c-text);
}

.page-products__hero-sub {
  font-size: 18px;
  font-weight: 600;
  color: var(--c-gold-light);
  margin: 0;
}

.page-products__hero-lead {
  max-width: 560px;
}

.page-products__hero-lead p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-text-alt);
}

.page-products__hero-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  padding: 10px 20px;
  border: 1px solid rgba(247, 181, 0, 0.45);
  border-radius: 999px;
  color: var(--c-gold);
  font-size: 14px;
  font-weight: 600;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}

.page-products__hero-link:hover {
  background: rgba(247, 181, 0, 0.12);
  border-color: var(--c-gold);
  transform: translateY(-2px);
}

/* 章节索引 */
.page-products__chapter-index {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.page-products__chapter-link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px;
  background: var(--app-bg-soft);
  border: 1px solid var(--app-border-soft);
  border-radius: var(--radius);
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}

.page-products__chapter-link:hover {
  background: rgba(230, 52, 42, 0.1);
  border-color: rgba(230, 52, 42, 0.4);
  transform: translateY(-2px);
}

.page-products__chapter-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-gold);
}

.page-products__chapter-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--c-text);
  line-height: 1.35;
}

.page-products__chapter-tag {
  font-size: 12px;
  color: var(--c-text-alt);
}

/* 核心应用区 */
.page-products__core {
  padding: 72px 0 0;
}

/* 应用模块交替背景 */
.page-products__app {
  position: relative;
  overflow: hidden;
  padding: 64px 0;
}

.page-products__app--standings {
  background: var(--c-bg);
}

.page-products__app--goals {
  background: var(--c-bg-alt);
}

.page-products__app--cases {
  background: var(--c-bg);
}

.page-products__app--help {
  background: var(--c-bg-alt);
}

.page-products__app-wrap {
  display: grid;
  gap: 32px;
  align-items: center;
}

.page-products__app-visual {
  position: relative;
}

.page-products__app-number {
  position: absolute;
  top: -28px;
  left: -6px;
  z-index: 1;
  font-family: var(--font-display);
  font-size: 96px;
  font-weight: 900;
  line-height: 1;
  color: rgba(247, 181, 0, 0.14);
  pointer-events: none;
  user-select: none;
}

.page-products__app-visual .stage-media {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 14px 44px rgba(0, 0, 0, 0.42);
}

.page-products__app-visual .stage-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-products__app--help .stage-media img {
  height: 340px;
  object-position: top center;
}

.page-products__app-content {
  min-width: 0;
}

.page-products__app-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.page-products__app h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 800;
  line-height: 1.15;
  color: var(--c-text);
}

.page-products__app-lead {
  margin: 0 0 24px;
  max-width: 560px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-text-alt);
}

/* 功能列表 */
.page-products__feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products__feature-list li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--c-text);
}

.page-products__feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 9px;
  height: 9px;
  background: linear-gradient(135deg, var(--c-primary), var(--c-gold));
  transform: rotate(45deg);
}

/* 数据覆盖 */
.page-products__coverage {
  padding: 88px 0;
  background:
    radial-gradient(ellipse at 85% 45%, rgba(230, 52, 42, 0.2), transparent 52%),
    radial-gradient(ellipse at 10% 85%, rgba(247, 181, 0, 0.12), transparent 45%),
    linear-gradient(140deg, var(--c-bg-deep), var(--c-bg));
  border-top: 1px solid rgba(247, 181, 0, 0.18);
  border-bottom: 1px solid rgba(247, 181, 0, 0.18);
}

.page-products__coverage-grid {
  display: grid;
  gap: 48px;
  align-items: center;
}

.page-products__coverage-copy .eyebrow {
  margin-bottom: 8px;
}

.page-products__coverage-copy h2 {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 900;
  line-height: 1.1;
  color: var(--c-text);
}

.page-products__coverage-copy > p {
  margin: 0;
  max-width: 540px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-text-alt);
}

.page-products__coverage-trust {
  margin-top: 16px;
  font-size: 13px;
  color: var(--c-text-alt);
  opacity: 0.75;
}

.page-products__coverage-list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px 14px;
}

.page-products__coverage-list li {
  padding: 14px 16px 14px 18px;
  border-left: 2px solid var(--c-gold);
  background: rgba(255, 255, 255, 0.04);
  border-radius: 0 10px 10px 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--c-text-alt);
}

.page-products__coverage-list .num {
  display: block;
  margin-bottom: 2px;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--c-gold-light);
}

.page-products__coverage-visual {
  display: grid;
  justify-items: center;
  gap: 24px;
}

.page-products__coverage-ring {
  position: relative;
  display: grid;
  place-items: center;
}

.page-products__coverage-donut {
  position: relative;
  display: grid;
  place-items: center;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: conic-gradient(var(--c-primary) 0deg 300deg, rgba(255, 255, 255, 0.08) 300deg 360deg);
}

.page-products__coverage-donut::before {
  content: "";
  position: absolute;
  width: 148px;
  height: 148px;
  border-radius: 50%;
  background: var(--c-bg-deep);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.page-products__coverage-donut-num {
  position: relative;
  font-family: var(--font-mono);
  font-size: 54px;
  font-weight: 700;
  line-height: 1;
  color: var(--c-gold-light);
}

.page-products__coverage-donut-label {
  position: relative;
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: var(--c-text-alt);
}

.page-products__coverage-visual .stage-media {
  width: 100%;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.45);
}

.page-products__coverage-visual .stage-media img {
  display: block;
  width: 100%;
  height: auto;
}

/* 版本说明 */
.page-products__versions {
  padding: 88px 0;
  background: var(--c-bg);
}

.page-products__version-grid {
  margin-top: 36px;
}

.page-products__version-card {
  position: relative;
  padding: 32px 28px;
  border-top: 3px solid var(--c-primary);
}

.page-products__version-card--local {
  border-top-color: var(--c-gold);
}

.page-products__version-icon {
  display: inline-block;
  margin-bottom: 18px;
  padding: 5px 12px;
  border-radius: 4px;
  background: rgba(230, 52, 42, 0.16);
  color: var(--c-primary-light);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.page-products__version-card--local .page-products__version-icon {
  background: rgba(247, 181, 0, 0.14);
  color: var(--c-gold-light);
}

.page-products__version-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  color: var(--c-text);
}

.page-products__version-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-alt);
}

.page-products__versions-note {
  margin: 36px 0 0;
  text-align: center;
  font-size: 14px;
  color: var(--c-text-alt);
}

.page-products__versions-note a {
  color: var(--c-gold);
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* 平板及以上 */
@media (min-width: 768px) {
  .page-products__hero {
    padding: 124px 0 56px;
  }

  .page-products__hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: end;
    gap: 48px;
    margin-bottom: 48px;
  }

  .page-products__chapter-index {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-products__app {
    padding: 88px 0;
  }

  .page-products__app-wrap {
    grid-template-columns: minmax(0, 8fr) minmax(0, 12fr);
    gap: 48px;
  }

  .page-products__app--goals .page-products__app-visual,
  .page-products__app--help .page-products__app-visual {
    order: 2;
  }

  .page-products__app--help .stage-media img {
    height: 420px;
  }

  .page-products__coverage-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 56px;
  }

  .page-products__coverage-visual {
    justify-items: end;
  }

  .page-products__versions-note {
    margin-top: 48px;
  }
}

/* 桌面宽屏 */
@media (min-width: 1024px) {
  .page-products__app-wrap {
    gap: 80px;
  }

  .page-products__app-number {
    font-size: 128px;
  }
}