/* ===== 平台与档位 · 页面专属样式 ===== */

.page-products {
  --pp-band-h: 132px;
  --pp-tier-float: -18px;
}

/* ---------- 首屏 ---------- */

.page-products .page-products__hero {
  padding: 40px 0 56px;
}

.page-products .page-products__hero-inner {
  display: grid;
  gap: 36px;
}

.page-products .page-products__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(46px, 12.5vw, 100px);
  line-height: 0.98;
  letter-spacing: -0.025em;
  color: var(--c-ink);
}

.page-products .page-products__title-thin {
  display: block;
  font-weight: 300;
}

.page-products .page-products__title-strong {
  display: block;
  font-weight: 800;
  letter-spacing: -0.035em;
}

.page-products .page-products__lede {
  margin: 24px 0 0;
  max-width: 60ch;
  font-size: 17px;
  line-height: 1.8;
  color: var(--c-ink-soft);
}

.page-products .page-products__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.page-products .page-products__hero-side {
  display: grid;
  gap: 20px;
  align-content: start;
}

.page-products .page-products__side-card {
  position: relative;
  padding: 22px 24px 24px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-card);
  background: var(--c-panel-soft);
  overflow: hidden;
}

.page-products .page-products__side-card::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  background: linear-gradient(90deg, var(--tier-1), var(--tier-2), var(--tier-3), var(--tier-4));
}

.page-products .page-products__side-time {
  margin: 10px 0 0;
  font-size: 34px;
  line-height: 1.05;
  color: var(--c-orange);
  letter-spacing: -0.02em;
}

.page-products .page-products__side-note {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-ink-soft);
}

.page-products .page-products__stats {
  flex-wrap: wrap;
  gap: 16px 22px;
  padding: 18px 22px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-card);
}

/* ---------- 章节头部微调 ---------- */

.page-products .page-products__section-head {
  margin-bottom: 36px;
}

.page-products .page-products__section-head .section-head__index {
  font-family: var(--font-mono);
  color: var(--c-cyan);
}

/* ---------- 01 色带区 ---------- */

.page-products .page-products__band-section {
  padding-top: 8px;
}

.page-products .page-products__compare {
  display: grid;
  gap: 28px;
}

.page-products .page-products__band {
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-radius: var(--radius-card);
  overflow: hidden;
}

.page-products .page-products__seg {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 4px;
  min-height: 104px;
  padding: 18px 20px;
  border-radius: 18px;
  color: #05070f;
  transition: filter 200ms var(--ease), transform 200ms var(--ease);
  outline: none;
}

.page-products .page-products__seg-index {
  font-size: 12px;
  letter-spacing: 0.16em;
  opacity: 0.72;
}

.page-products .page-products__seg-name {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1;
}

.page-products .page-products__seg-desc {
  font-size: 13px;
  letter-spacing: 0.02em;
  opacity: 0.78;
}

.page-products .page-products__seg:hover,
.page-products .page-products__seg:focus-visible {
  filter: brightness(1.16) saturate(1.08);
}

.page-products .page-products__seg:focus-visible {
  box-shadow: 0 0 0 2px var(--c-cyan);
}

.page-products .page-products__band-media {
  margin: 0;
}

/* 色带 ↔ 卡片联动高亮 */
.page-products .page-products__compare:has(.page-products__tier--1:hover) .page-products__seg:nth-child(1),
.page-products .page-products__compare:has(.page-products__tier--2:hover) .page-products__seg:nth-child(2),
.page-products .page-products__compare:has(.page-products__tier--3:hover) .page-products__seg:nth-child(3),
.page-products .page-products__compare:has(.page-products__tier--4:hover) .page-products__seg:nth-child(4) {
  filter: brightness(1.18) saturate(1.1);
}

.page-products .page-products__compare:has(.page-products__tier--1:focus-within) .page-products__seg:nth-child(1),
.page-products .page-products__compare:has(.page-products__tier--2:focus-within) .page-products__seg:nth-child(2),
.page-products .page-products__compare:has(.page-products__tier--3:focus-within) .page-products__seg:nth-child(3),
.page-products .page-products__compare:has(.page-products__tier--4:focus-within) .page-products__seg:nth-child(4) {
  box-shadow: inset 0 0 0 2px var(--c-cyan);
}

/* 档位卡片：不等高非对称排布 */
.page-products .page-products__tiers {
  display: grid;
  gap: 18px;
}

.page-products .page-products__tier {
  display: grid;
  align-content: start;
  gap: 8px;
  padding: 24px;
  border-top: 3px solid var(--band, var(--c-line));
  background: var(--c-panel-soft);
}

.page-products .page-products__tier--1 {
  --band: var(--tier-1);
}

.page-products .page-products__tier--2 {
  --band: var(--tier-2);
  padding-top: 34px;
}

.page-products .page-products__tier--3 {
  --band: var(--tier-3);
  padding-top: 44px;
}

.page-products .page-products__tier--4 {
  --band: var(--tier-4);
  padding-top: 54px;
}

.page-products .page-products__tier-name {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--c-ink);
}

.page-products .page-products__tier-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-ink-soft);
}

.page-products .page-products__tier-key {
  margin: 8px 0 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-ink-soft);
}

.page-products .page-products__tier-val {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--c-ink);
}

/* ---------- 02 折叠面板 ---------- */

.page-products .page-products__folds {
  display: grid;
  gap: 14px;
}

.page-products .page-products__fold {
  position: relative;
  padding-left: 14px;
  border-radius: var(--radius-card);
}

.page-products .page-products__fold::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 3px;
  border-radius: 3px;
  transition: background 200ms var(--ease);
}

.page-products .page-products__fold--1::before {
  background: var(--tier-1);
}

.page-products .page-products__fold--2::before {
  background: var(--tier-2);
}

.page-products .page-products__fold--3::before {
  background: var(--tier-3);
}

.page-products .page-products__fold--4::before {
  background: var(--tier-4);
}

.page-products .page-products__fold .fold__summary {
  display: flex;
  align-items: center;
  gap: 16px;
  cursor: pointer;
}

.page-products .page-products__fold .fold__index {
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--c-ink-soft);
}

.page-products .page-products__fold-title {
  font-size: 17px;
  line-height: 1.5;
  color: var(--c-ink);
}

.page-products .page-products__fold .fold__body p {
  margin: 0 0 12px;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-ink-soft);
}

.page-products .page-products__fold .fold__body p:last-child {
  margin-bottom: 0;
}

/* ---------- 03 包装规格 ---------- */

.page-products .page-products__pack {
  display: grid;
  gap: 28px;
}

.page-products .page-products__pack-media {
  margin: 0;
}

.page-products .page-products__pack-list {
  display: grid;
  gap: 20px;
  margin: 0;
}

.page-products .page-products__pack-item {
  display: grid;
  gap: 10px;
  padding: 20px 22px;
  border: 1px solid var(--c-line);
  border-radius: 20px;
  background: var(--c-panel-soft);
}

.page-products .page-products__pack-item dt {
  margin: 0;
}

.page-products .page-products__pack-item dd {
  margin: 0;
  display: grid;
  gap: 8px;
}

.page-products .page-products__pack-item dd p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-ink-soft);
}

.page-products .page-products__pack-meta {
  font-family: var(--font-mono);
  font-size: 13px !important;
  color: var(--c-ink) !important;
  letter-spacing: -0.01em;
}

.page-products .page-products__pack-note {
  margin: 22px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--c-line);
  font-size: 13px;
  line-height: 1.8;
  color: var(--c-ink-soft);
}

/* ---------- 04 版本差异 ---------- */

.page-products .page-products__diff-grid {
  align-items: start;
}

.page-products .page-products__diff {
  border: 1px solid var(--c-line);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--c-panel-soft);
}

.page-products .page-products__diff-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--c-line);
}

.page-products .page-products__diff-row:last-child {
  border-bottom: 0;
}

.page-products .page-products__diff-row--head {
  background: rgba(160, 107, 255, 0.08);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-ink-soft);
}

.page-products .page-products__diff-cell {
  font-size: 15px;
  line-height: 1.65;
  color: var(--c-ink-soft);
}

.page-products .page-products__diff-key {
  color: var(--c-ink);
  font-size: 14px;
  letter-spacing: 0.02em;
}

.page-products .page-products__diff-new {
  color: var(--c-ink);
}

.page-products .page-products__diff-link {
  margin: 20px 0 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-ink-soft);
}

.page-products .page-products__diff-side {
  display: grid;
  gap: 20px;
}

.page-products .page-products__diff-media {
  margin: 0;
}

/* ---------- 05 库存快照 ---------- */

.page-products .page-products__snap-list {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-products .page-products__snap-list li {
  padding: 14px 18px;
  border: 1px solid var(--c-line);
  border-radius: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-ink-soft);
  background: var(--c-panel-soft);
}

.page-products .page-products__snap-media {
  margin: 0;
}

.page-products .page-products__snapshot {
  position: sticky;
  bottom: 0;
  z-index: 3;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  margin-top: 36px;
  padding: 16px 20px;
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-orange);
  border-radius: 20px;
  background: rgba(13, 20, 40, 0.94);
  backdrop-filter: blur(6px);
}

.page-products .page-products__snapshot-text {
  flex: 1 1 240px;
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-ink-soft);
}

.page-products .page-products__snapshot-text .num {
  color: var(--c-orange);
  font-size: 15px;
}

/* ---------- 接着看 ---------- */

.page-products .page-products__next-title {
  margin-bottom: 24px;
}

.page-products .page-products__next-grid {
  display: grid;
  gap: 14px;
}

.page-products .page-products__next-item {
  display: grid;
  gap: 8px;
  padding: 20px 22px;
  border: 1px solid var(--c-line);
  border-radius: 20px;
  background: var(--c-panel-soft);
  text-decoration: none;
  transition: border-color 200ms var(--ease), transform 200ms var(--ease);
}

.page-products .page-products__next-item:hover {
  border-color: var(--c-cyan);
  transform: translateY(-3px);
}

.page-products .page-products__next-item:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 3px;
}

.page-products .page-products__next-name {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--c-ink);
}

/* ---------- 断点：650px ---------- */

@media (min-width: 650px) {
  .page-products .page-products__tiers {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

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

  .page-products .page-products__pack-item:last-child {
    grid-column: 1 / -1;
  }

  .page-products .page-products__diff-row {
    grid-template-columns: 1.1fr 1fr 1.2fr;
    gap: 16px;
    align-items: baseline;
  }

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

  .page-products .page-products__band {
    flex-direction: row;
    height: var(--pp-band-h);
  }

  .page-products .page-products__seg {
    min-height: 0;
    border-radius: 16px;
  }

  .page-products .page-products__seg:nth-child(1) {
    flex: 22 1 0;
  }

  .page-products .page-products__seg:nth-child(2) {
    flex: 24 1 0;
  }

  .page-products .page-products__seg:nth-child(3) {
    flex: 26 1 0;
  }

  .page-products .page-products__seg:nth-child(4) {
    flex: 28 1 0;
  }
}

/* ---------- 断点：980px ---------- */

@media (min-width: 980px) {
  .page-products .page-products__hero {
    padding: 64px 0 88px;
  }

  .page-products .page-products__hero-inner {
    grid-template-columns: 7fr 4fr;
    gap: 56px;
    align-items: end;
  }

  .page-products .page-products__title {
    font-size: clamp(68px, 7.6vw, 112px);
  }

  .page-products .page-products__tiers {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    align-items: end;
  }

  .page-products .page-products__tier--4 {
    transform: translateY(var(--pp-tier-float));
  }

  .page-products .page-products__pack {
    grid-template-columns: 5fr 6fr;
    gap: 44px;
    align-items: start;
  }

  .page-products .page-products__pack-list {
    grid-template-columns: 1fr;
  }

  .page-products .page-products__pack-item:last-child {
    grid-column: auto;
  }

  .page-products .page-products__next-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 降低动效 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-products .page-products__seg,
  .page-products .page-products__next-item {
    transition: none;
  }

  .page-products .page-products__next-item:hover {
    transform: none;
  }

  .page-products .page-products__tier--4 {
    transform: none;
  }
}