.page-products {
  --pp-gap: clamp(16px, 2.2vw, 30px);
  --pp-alt: rgba(38, 49, 74, 0.30);
  --pp-cyan-wash: rgba(43, 245, 208, 0.07);
  --pp-orange-wash: rgba(255, 106, 26, 0.10);
  padding-bottom: clamp(48px, 8vw, 110px);
}

/* ---------- 面包屑 ---------- */
.page-products .crumbs {
  padding-top: clamp(16px, 2.6vw, 30px);
}

/* ---------- 首屏 ---------- */
.page-products .prod-hero {
  position: relative;
  padding-top: clamp(22px, 3.6vw, 52px);
}

.page-products .prod-hero-intro {
  max-width: 920px;
}

.page-products .prod-eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-products .prod-hero h1 {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-size: clamp(34px, 6vw, 76px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  font-weight: 700;
  color: var(--white);
  max-width: 20ch;
}

.page-products .prod-lede {
  margin: 0 0 26px;
  max-width: 62ch;
  font-size: var(--fs-3);
  line-height: 1.85;
  color: var(--muted);
}

.page-products .prod-hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-products .prod-hero-figure {
  margin: clamp(26px, 4vw, 48px) 0 0;
  border: 1px solid var(--line);
}

/* ---------- 首屏数据板 ---------- */
.page-products .prod-hero-board {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pp-gap);
  margin-top: var(--pp-gap);
}

.page-products .prod-table-wrap {
  background: var(--panel);
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-products .prod-table-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 18px;
  padding: 18px 20px 14px;
  border-bottom: 1px solid var(--line);
}

.page-products .prod-table-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--fs-4);
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-products .prod-table-note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  color: var(--muted);
}

.page-products .prod-table-scroll {
  overflow-x: auto;
  max-height: 480px;
}

.page-products .prod-table {
  width: 100%;
  min-width: 660px;
  border-collapse: collapse;
  font-size: 15px;
}

.page-products .prod-table thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  padding: 12px 16px;
  text-align: left;
  background: var(--navy);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}

.page-products .prod-table tbody th,
.page-products .prod-table tbody td {
  padding: 13px 16px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

.page-products .prod-table tbody th {
  font-family: var(--font-body);
  font-weight: 500;
  color: var(--white);
}

.page-products .prod-table tbody tr:nth-child(even) {
  background: var(--pp-alt);
}

.page-products .prod-table tbody tr:hover {
  background: var(--pp-cyan-wash);
}

.page-products .prod-table td.num {
  font-family: var(--font-mono);
  font-size: 15px;
  font-variant-numeric: tabular-nums;
  color: rgba(242, 245, 247, 0.82);
}

.page-products .prod-table td.num.is-lead {
  color: var(--cyan);
}

/* ---------- 首屏浮层数据卡 ---------- */
.page-products .prod-glance {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid var(--glass-line);
  border-radius: var(--radius);
}

.page-products .prod-glance-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--fs-4);
  color: var(--white);
}

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

.page-products .prod-glance-list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line);
  font-size: var(--fs-2);
  color: var(--muted);
}

.page-products .prod-glance-list b.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-4);
  color: var(--cyan);
  letter-spacing: -0.01em;
}

/* ---------- 章节通用 ---------- */
.page-products .prod-sec {
  margin-top: clamp(56px, 9vw, 128px);
}

.page-products .prod-sec-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  margin-bottom: clamp(20px, 3vw, 36px);
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.page-products .prod-sec-head .chapter-title {
  flex: 1 1 100%;
  margin: 0;
  max-width: 30ch;
}

.page-products .prod-sub-title {
  margin: 26px 0 12px;
  font-family: var(--font-display);
  font-size: var(--fs-4);
  color: var(--white);
  letter-spacing: 0.01em;
}

.page-products .prod-lead-text {
  margin: 0 0 8px;
  font-size: var(--fs-3);
  line-height: 1.85;
  color: rgba(242, 245, 247, 0.88);
}

.page-products .prod-note-text {
  margin: 16px 0 0;
  font-size: var(--fs-2);
  line-height: 1.8;
  color: var(--muted);
}

.page-products .prod-note-text a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .prod-cols,
.page-products .prod-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pp-gap);
}

.page-products .prod-panel {
  padding: clamp(20px, 2.6vw, 30px);
  border: 1px solid var(--line);
}

.page-products .prod-panel--example {
  background: linear-gradient(150deg, var(--pp-orange-wash), transparent 62%), var(--panel);
}

/* ---------- 01 字段清单 ---------- */
.page-products .prod-field-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-products .prod-field-list li {
  padding: 16px 0;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 6px;
}

.page-products .prod-field-list b {
  font-family: var(--font-display);
  font-size: var(--fs-3);
  font-weight: 600;
  color: var(--cyan);
  letter-spacing: 0.02em;
}

.page-products .prod-field-list span {
  font-size: var(--fs-2);
  line-height: 1.8;
  color: var(--muted);
}

.page-products .prod-check-list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: pp-check;
  display: grid;
  gap: 12px;
}

.page-products .prod-check-list li {
  position: relative;
  counter-increment: pp-check;
  padding-left: 36px;
  font-size: var(--fs-2);
  line-height: 1.75;
  color: rgba(242, 245, 247, 0.86);
}

.page-products .prod-check-list li::before {
  content: counter(pp-check, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  color: var(--orange);
  letter-spacing: 0.04em;
}

/* ---------- 02 左右分栏 ---------- */
.page-products .prod-split-text {
  min-width: 0;
}

.page-products .prod-split-figure {
  margin: 0;
  border: 1px solid var(--line);
}

.page-products .prod-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 26px 0 4px;
}

.page-products .prod-filter {
  display: inline-flex;
  align-items: center;
  padding: 7px 15px;
  border-radius: 999px;
  border: 1px solid var(--glass-line);
  background: var(--glass);
  font-size: var(--fs-2);
  color: var(--muted);
  white-space: nowrap;
}

.page-products .prod-filter.is-on {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
  font-weight: 500;
}

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

.page-products .prod-plain-list li {
  position: relative;
  padding-left: 20px;
  font-size: var(--fs-3);
  line-height: 1.8;
  color: rgba(242, 245, 247, 0.84);
}

.page-products .prod-plain-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}

.page-products .prod-plain-list b {
  color: var(--white);
  font-weight: 600;
}

/* ---------- 03 收藏 ---------- */
.page-products .prod-collect-figure {
  margin: 0;
  border: 1px solid var(--line);
}

/* ---------- 04 下载 ---------- */
.page-products .prod-dl-list {
  display: grid;
  gap: 10px;
  margin-top: 24px;
}

.page-products .prod-dl-card {
  border: 1px solid var(--glass-line);
  background: var(--glass);
  border-radius: var(--radius);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-products .prod-dl-card:hover {
  border-color: var(--cyan);
  transform: translateY(-6px);
}

.page-products .prod-dl-card > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-3);
  color: var(--white);
}

.page-products .prod-dl-card > summary::-webkit-details-marker {
  display: none;
}

.page-products .prod-dl-card > summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--fs-4);
  line-height: 1;
  color: var(--cyan);
}

.page-products .prod-dl-card[open] > summary::after {
  content: "–";
}

.page-products .prod-dl-card > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-products .prod-dl-name {
  font-weight: 500;
}

.page-products .prod-dl-meta {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--fs-2);
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
}

.page-products .prod-dl-body {
  padding: 0 20px 18px;
  border-top: 1px solid var(--line);
}

.page-products .prod-dl-body p {
  margin: 14px 0 10px;
  font-size: var(--fs-2);
  line-height: 1.8;
  color: var(--muted);
}

.page-products .prod-dl-spec {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 6px;
}

.page-products .prod-dl-spec li {
  position: relative;
  padding-left: 16px;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  line-height: 1.7;
  color: rgba(147, 161, 184, 0.9);
}

.page-products .prod-dl-spec li::before {
  content: "·";
  position: absolute;
  left: 4px;
  color: var(--orange);
}

/* ---------- 05 会员等级 ---------- */
.page-products .prod-tiers {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border: 1px solid var(--line);
}

.page-products .prod-tier {
  padding: clamp(20px, 2.6vw, 30px);
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

.page-products .prod-tier:last-child {
  border-bottom: 0;
}

.page-products .prod-tier--mid {
  background: var(--pp-alt);
}

.page-products .prod-tier--top {
  background: linear-gradient(140deg, var(--pp-cyan-wash), transparent 70%), var(--panel);
}

.page-products .prod-tier-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-products .prod-tier-name {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--fs-5);
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-products .prod-tier--top .prod-tier-name {
  color: var(--cyan);
}

.page-products .prod-tier-for {
  margin: 0;
  font-size: var(--fs-2);
  color: var(--muted);
}

.page-products .prod-tier-list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-products .prod-tier-list li {
  position: relative;
  padding-left: 18px;
  font-size: var(--fs-2);
  line-height: 1.8;
  color: rgba(242, 245, 247, 0.84);
}

.page-products .prod-tier-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.8em;
  width: 8px;
  height: 1px;
  background: var(--orange);
}

/* ---------- 06 步骤树 ---------- */
.page-products .prod-steps-wrap {
  position: relative;
  padding-top: 8px;
}

.page-products .prod-steps-arc {
  display: none;
  width: 100%;
  height: 96px;
  margin-bottom: -46px;
}

.page-products .prod-steps {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-products .prod-step {
  position: relative;
  padding: 22px 20px 20px;
  border: 1px solid var(--line);
  background: var(--panel);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .prod-step:hover,
.page-products .prod-step:focus-within {
  transform: translateY(-6px);
  border-color: var(--orange);
}

.page-products .prod-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  margin-bottom: 14px;
  border: 2px solid var(--orange);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: 0.04em;
  color: var(--orange);
}

.page-products .prod-step-title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: var(--fs-4);
  color: var(--white);
}

.page-products .prod-step p {
  margin: 0;
  font-size: var(--fs-2);
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 07 合作 ---------- */
.page-products .prod-split-text > p {
  font-size: var(--fs-3);
  line-height: 1.85;
  color: rgba(242, 245, 247, 0.84);
}

.page-products .prod-split-text > p a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 焦点可见 ---------- */
.page-products a:focus-visible,
.page-products summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-products .prod-tiers {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-products .prod-tier {
    border-bottom: 0;
    border-right: 1px solid var(--line);
  }

  .page-products .prod-tier:last-child {
    border-right: 0;
  }
}

@media (min-width: 900px) {
  .page-products .prod-cols {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-products .prod-cols--reverse {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.45fr);
  }

  .page-products .prod-panel--example {
    margin-top: clamp(24px, 4vw, 56px);
  }

  .page-products .prod-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-products .prod-split--media-left {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  }

  .page-products .prod-split--media-right .prod-split-figure {
    margin-top: clamp(24px, 4vw, 56px);
  }

  .page-products .prod-split--media-left .prod-split-figure {
    margin-top: clamp(12px, 2vw, 24px);
  }

  .page-products .prod-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
  }

  .page-products .prod-steps-arc {
    display: block;
  }

  .page-products .prod-step:nth-child(even) {
    margin-top: 26px;
  }

  .page-products .prod-collect-figure {
    margin-top: clamp(18px, 3vw, 42px);
  }
}

@media (min-width: 980px) {
  .page-products .prod-hero-board {
    grid-template-columns: minmax(0, 1.62fr) minmax(0, 0.86fr);
    align-items: start;
  }

  .page-products .prod-glance {
    margin-top: clamp(32px, 5vw, 64px);
  }
}

@media (min-width: 1240px) {
  .page-products .prod-hero h1 {
    max-width: 22ch;
  }

  .page-products .prod-sec-head {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 4px 20px;
    align-items: baseline;
  }

  .page-products .prod-sec-head .chapter-title {
    grid-column: 2;
    max-width: 26ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .prod-dl-card,
  .page-products .prod-step {
    transition: none;
  }

  .page-products .prod-dl-card:hover,
  .page-products .prod-step:hover,
  .page-products .prod-step:focus-within {
    transform: none;
  }
}