/* ============ 应用方案页专用样式 ============ */
.page-products .container.page-products__breadcrumb {
  padding-top: var(--sp-4);
}

.page-products .product-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--sp-5);
  padding-top: var(--sp-5);
  padding-bottom: var(--sp-8);
}

.page-products .product-main {
  min-width: 0;
}

/* ===== 左侧安装进度栏 ===== */
.page-products .product-rail__inner {
  background: var(--c-navy);
  color: var(--c-white);
  padding: var(--sp-5) var(--sp-4);
  position: relative;
  overflow: hidden;
}

.page-products .product-rail__inner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-gold-red);
}

.page-products .product-rail__inner::after {
  content: "";
  position: absolute;
  right: -40px;
  top: 20px;
  width: 140px;
  height: 140px;
  background: radial-gradient(circle, rgba(245, 166, 35, 0.16) 0%, transparent 70%);
  pointer-events: none;
}

.page-products .product-rail__eyebrow {
  display: block;
  font-family: var(--font-num);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: var(--sp-4);
}

.page-products .progress-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-products .progress-steps::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background: rgba(255, 255, 255, 0.18);
}

.page-products .progress-steps__item {
  position: relative;
  margin: 0;
  padding: 0 0 var(--sp-4) 44px;
}

.page-products .progress-steps__item:last-child {
  padding-bottom: 0;
}

.page-products .progress-steps__link {
  display: inline-flex;
  flex-direction: column;
  gap: var(--sp-1);
  text-decoration: none;
  color: rgba(255, 255, 255, 0.72);
  transition: color var(--dur-fast) var(--ease-out);
}

.page-products .progress-steps__num {
  position: absolute;
  left: 0;
  top: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.35);
  font-family: var(--font-num);
  font-size: 0.75rem;
  color: var(--c-gold);
  background: var(--c-navy);
  z-index: 1;
}

.page-products .progress-steps__text {
  font-size: 0.95rem;
  line-height: 1.4;
  max-width: 10em;
}

.page-products .progress-steps__item.is-active .progress-steps__link,
.page-products .progress-steps__item:hover .progress-steps__link {
  color: var(--c-white);
}

.page-products .progress-steps__item.is-active .progress-steps__num {
  background: var(--c-gold);
  border-color: var(--c-gold);
  color: var(--c-navy);
  font-weight: 700;
}

.page-products .rail-facts {
  margin-top: var(--sp-5);
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  padding-top: var(--sp-4);
}

.page-products .rail-facts__item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: var(--sp-2);
}

.page-products .rail-facts__label {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.6);
}

.page-products .rail-facts__value {
  font-family: var(--font-num);
  font-size: 0.95rem;
  color: var(--c-gold);
}

/* ===== 首屏 Hero ===== */
.page-products .product-hero {
  background: var(--c-navy);
  color: var(--c-white);
  padding: var(--sp-6) var(--sp-5);
  margin-bottom: var(--sp-7);
  position: relative;
  overflow: hidden;
}

.page-products .product-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-gold-red);
}

.page-products .product-hero::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(245, 166, 35, 0.18) 0%, transparent 65%);
  pointer-events: none;
}

.page-products .product-hero__kicker {
  font-family: var(--font-num);
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: var(--sp-4);
}

.page-products .product-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5.2vw, 3.4rem);
  line-height: 1.12;
  margin: 0 0 var(--sp-4);
  max-width: 18em;
  letter-spacing: 0.01em;
}

.page-products .product-hero__lead {
  font-size: 1.02rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.82);
  max-width: 38em;
  margin: 0 0 var(--sp-5);
}

.page-products .product-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
}

/* ===== 通用内容区块 ===== */
.page-products .product-section {
  margin-bottom: var(--sp-8);
  scroll-margin-top: calc(var(--header-total-h) + var(--sp-5));
}

.page-products .product-section .section-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-1) var(--sp-4);
  align-items: start;
  border-bottom: 1px solid var(--c-silver);
  padding-bottom: var(--sp-4);
  margin-bottom: var(--sp-5);
}

.page-products .product-section .section-head__index {
  font-family: var(--font-num);
  font-size: 1rem;
  color: var(--c-red);
  line-height: 1.4;
  letter-spacing: 0.05em;
}

.page-products .product-section .section-head__title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  line-height: 1.2;
  margin: 0;
  color: var(--c-charcoal);
}

.page-products .product-section .section-head__desc {
  margin: var(--sp-2) 0 0;
  color: var(--c-muted-text);
  line-height: 1.7;
  max-width: 42em;
}

/* ===== 安装步骤 ===== */
.page-products .install-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--sp-5);
}

.page-products .install-list {
  list-style: none;
  margin: 0 0 var(--sp-4);
  padding: 0;
}

.page-products .install-list__item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: var(--sp-3);
  padding-bottom: var(--sp-5);
  margin-bottom: var(--sp-5);
  border-bottom: 1px solid var(--c-silver);
}

.page-products .install-list__item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
  margin-bottom: 0;
}

.page-products .install-list__num {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-navy);
  color: var(--c-gold);
  font-family: var(--font-num);
  font-size: 1rem;
}

.page-products .install-list__content h3 {
  margin: 0 0 var(--sp-2);
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--c-charcoal);
}

.page-products .install-list__content p {
  margin: 0;
  line-height: 1.75;
  color: var(--c-body-text);
}

.page-products .install-list__content p + p {
  margin-top: var(--sp-2);
}

.page-products .install-figure {
  margin: 0;
  border: 1px solid var(--c-silver);
  padding: var(--sp-2);
  background: var(--c-white);
}

.page-products .install-figure__media {
  width: 100%;
  height: auto;
  display: block;
}

.page-products .install-figure figcaption,
.page-products .function-belt__figure figcaption,
.page-products .version-figure figcaption,
.page-products .data-figure figcaption,
.page-products .data-note__figure figcaption {
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--c-muted-text);
  padding-top: var(--sp-2);
}

/* ===== 功能矩阵 · 横向主题带 ===== */
.page-products .function-belt {
  background: var(--c-white);
  border: 1px solid var(--c-silver);
  padding: var(--sp-4);
  margin-bottom: var(--sp-5);
}

.page-products .function-belt__top {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  margin-bottom: var(--sp-4);
}

.page-products .function-belt__top h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin: 0;
  color: var(--c-charcoal);
}

.page-products .league-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--sp-3);
  margin-bottom: var(--sp-4);
}

.page-products .league-panel {
  border: 1px solid var(--c-silver);
  border-top: 3px solid var(--c-ice);
  background: var(--c-white);
  padding: var(--sp-4);
  transition: box-shadow var(--dur-base) var(--ease-out);
}

.page-products .league-panel:hover {
  box-shadow: var(--shadow-1);
}

.page-products .league-panel__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--sp-2);
  margin-bottom: var(--sp-3);
}

.page-products .league-panel__badge {
  font-family: var(--font-num);
  font-size: 0.68rem;
  color: var(--c-muted-text);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.page-products .league-panel h4 {
  margin: 0 0 var(--sp-2);
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--c-navy);
}

.page-products .league-panel p {
  font-size: 0.925rem;
  line-height: 1.7;
  color: var(--c-body-text);
  margin: 0 0 var(--sp-3);
}

.page-products .league-panel__meta {
  margin: 0;
  border-top: 1px solid var(--c-silver);
  padding-top: var(--sp-3);
}

.page-products .league-panel__meta > div {
  display: flex;
  justify-content: space-between;
  gap: var(--sp-2);
  font-size: 0.85rem;
  padding-bottom: var(--sp-1);
}

.page-products .league-panel__meta dt {
  color: var(--c-muted-text);
}

.page-products .league-panel__meta dd {
  margin: 0;
  font-family: var(--font-num);
  color: var(--c-charcoal);
  text-align: right;
}

.page-products .function-belt__figure,
.page-products .version-figure,
.page-products .data-figure,
.page-products .data-note__figure {
  margin: 0;
}

.page-products .function-belt__figure img,
.page-products .version-figure img,
.page-products .data-figure img,
.page-products .data-note__figure img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--c-silver);
  background: var(--c-white);
}

/* ===== 功能网格 ===== */
.page-products .feature-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--sp-4);
  margin-top: var(--sp-5);
}

.page-products .feature-card {
  position: relative;
  background: var(--c-white);
  border: 1px solid var(--c-silver);
  border-left: 3px solid var(--c-gold);
  padding: var(--sp-5);
  min-height: 172px;
  transition: border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-base) var(--ease-out);
}

.page-products .feature-card:hover {
  box-shadow: var(--shadow-1);
  border-left-color: var(--c-red);
}

.page-products .feature-card__icon {
  display: inline-flex;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: var(--c-navy);
  color: var(--c-gold);
  margin-bottom: var(--sp-3);
}

.page-products .feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin: 0 0 var(--sp-2);
  color: var(--c-charcoal);
}

.page-products .feature-card p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--c-body-text);
}

/* ===== 焕新版特性 ===== */
.page-products .version-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--sp-5);
  margin-bottom: var(--sp-5);
}

.page-products .version-copy h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin: 0 0 var(--sp-4);
  color: var(--c-charcoal);
}

.page-products .feature-list {
  list-style: none;
  margin: 0 0 var(--sp-5);
  padding: 0;
}

.page-products .feature-list li {
  position: relative;
  padding: var(--sp-2) 0 var(--sp-2) 26px;
  border-bottom: 1px solid var(--c-silver);
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--c-body-text);
}

.page-products .feature-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  top: var(--sp-2);
  color: var(--c-red);
  font-family: var(--font-num);
}

.page-products .version-note {
  display: flex;
  gap: var(--sp-3);
  align-items: baseline;
  background: var(--c-navy);
  color: var(--c-white);
  padding: var(--sp-4);
  margin-bottom: var(--sp-4);
}

.page-products .version-note__label {
  font-family: var(--font-num);
  color: var(--c-gold);
  font-size: 0.78rem;
  white-space: nowrap;
  letter-spacing: 0.1em;
  flex: 0 0 auto;
}

.page-products .version-note__body {
  font-size: 0.925rem;
  line-height: 1.7;
}

.page-products .version-table-wrap {
  border: 1px solid var(--c-silver);
  background: var(--c-white);
  overflow-x: auto;
}

.page-products .version-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
}

.page-products .version-table th,
.page-products .version-table td {
  text-align: left;
  padding: var(--sp-3) var(--sp-4);
  border-bottom: 1px solid var(--c-silver);
  font-size: 0.925rem;
  line-height: 1.6;
}

.page-products .version-table th {
  background: var(--c-navy);
  color: var(--c-white);
  font-family: var(--font-num);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page-products .version-table td {
  color: var(--c-body-text);
}

.page-products .version-table tr:last-child td {
  border-bottom: 0;
}

.page-products .version-table tbody tr:hover {
  background: #F2F4F7;
}

.page-products .version-table__name {
  font-family: var(--font-num);
  color: var(--c-navy);
  font-weight: 600;
}

/* ===== 数据服务说明 ===== */
.page-products .data-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--sp-5);
  margin-bottom: var(--sp-5);
}

.page-products .data-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-3);
}

.page-products .stat {
  background: var(--c-navy);
  padding: var(--sp-4);
  color: var(--c-white);
}

.page-products .stat__value {
  display: block;
  font-family: var(--font-num);
  font-size: 2rem;
  line-height: 1.2;
  color: var(--c-gold);
}

.page-products .stat__unit {
  font-size: 0.85rem;
  color: var(--c-white);
  margin-left: var(--sp-1);
}

.page-products .stat__label {
  display: block;
  margin-top: var(--sp-1);
  font-size: 0.8rem;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.72);
}

.page-products .data-note {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--sp-5);
  padding: var(--sp-5);
  background: var(--c-white);
  border: 1px solid var(--c-silver);
  margin-bottom: var(--sp-5);
}

.page-products .data-note__text h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  margin: 0 0 var(--sp-3);
  color: var(--c-charcoal);
}

.page-products .data-note__text p {
  line-height: 1.8;
  color: var(--c-body-text);
  margin: 0 0 var(--sp-3);
}

.page-products .data-note__text p:last-child {
  margin-bottom: 0;
}

.page-products .data-note__link {
  color: var(--c-ice);
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
}

.page-products .data-note__figure img {
  max-width: 100%;
}

.page-products .coverage-strip {
  border: 1px solid var(--c-silver);
  border-left: 4px solid var(--c-gold);
  background: var(--c-white);
  padding: var(--sp-5);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--sp-3);
  margin-bottom: var(--sp-5);
}

.page-products .coverage-strip__label {
  font-family: var(--font-num);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-navy);
}

.page-products .coverage-strip__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

.page-products .coverage-strip p {
  grid-column: 1 / -1;
  margin: 0;
  font-size: 0.925rem;
  line-height: 1.7;
  color: var(--c-muted-text);
}

.page-products .trust-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  padding-top: var(--sp-2);
}

/* ===== 平板与桌面增强 ===== */
@media (min-width: 640px) {
  .page-products .product-section .section-head {
    grid-template-columns: 48px 1fr;
  }

  .page-products .install-layout {
    grid-template-columns: minmax(0, 1fr) 260px;
    gap: var(--sp-6);
    align-items: start;
  }

  .page-products .league-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-products .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .version-layout {
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-6);
    align-items: center;
  }

  .page-products .data-note {
    grid-template-columns: 1fr 260px;
    align-items: center;
  }

  .page-products .coverage-strip {
    grid-template-columns: auto 1fr;
    align-items: center;
  }
}

@media (min-width: 768px) {
  .page-products .install-layout {
    grid-template-columns: minmax(0, 1fr) 300px;
  }

  .page-products .data-grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(220px, 0.7fr);
    align-items: center;
  }

  .page-products .data-stats {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (min-width: 1024px) {
  .page-products .product-shell {
    grid-template-columns: var(--product-rail-w, 270px) minmax(0, 1fr);
    gap: var(--sp-7);
    align-items: start;
  }

  .page-products .product-rail {
    position: sticky;
    top: calc(var(--header-total-h) + 24px);
    z-index: 5;
    align-self: start;
  }
}

@media (max-width: 1023px) {
  .page-products .product-rail__inner {
    padding: var(--sp-3);
  }

  .page-products .product-rail__eyebrow {
    display: none;
  }

  .page-products .progress-steps {
    display: flex;
    gap: var(--sp-2);
    overflow-x: auto;
    padding-bottom: var(--sp-1);
    scrollbar-width: none;
  }

  .page-products .progress-steps::-webkit-scrollbar {
    display: none;
  }

  .page-products .progress-steps::before {
    display: none;
  }

  .page-products .progress-steps__item {
    flex: 0 0 auto;
    padding: 0;
    margin: 0;
  }

  .page-products .progress-steps__link {
    flex-direction: row;
    align-items: center;
    gap: var(--sp-2);
    padding: var(--sp-2) var(--sp-3);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.16);
    color: rgba(255, 255, 255, 0.75);
    white-space: nowrap;
  }

  .page-products .progress-steps__num {
    position: static;
    width: 24px;
    height: 24px;
    font-size: 0.7rem;
    flex: 0 0 24px;
  }

  .page-products .progress-steps__text {
    font-size: 0.875rem;
  }

  .page-products .rail-facts {
    display: none;
  }
}

@media (min-width: 1200px) {
  .page-products .install-layout {
    grid-template-columns: minmax(0, 1fr) 340px;
  }
}

.page-products {
  --product-rail-w: inherit;
}