/* ===== 版本与入口 · 页面专属样式 ===== */
.page-products {
  --ov-gap: clamp(14px, 2.2vw, 22px);
  --ov-pad: clamp(18px, 2.6vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-products .ov-hero {
  padding-top: clamp(22px, 4vw, 48px);
  padding-bottom: clamp(30px, 5vw, 68px);
  border-bottom: 1px solid var(--line);
}

.page-products .ov-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
  align-items: center;
}

.page-products .ov-hero h1 {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(34px, 7vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 12px 0 20px;
}

.page-products .ov-hl {
  color: var(--amber-hi);
}

.page-products .ov-hero-lead {
  margin: 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--body-text);
}

.page-products .ov-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-products .ov-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(88px, 1fr));
  gap: 16px;
  margin: 30px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.page-products .ov-fact {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.page-products .ov-fact dd {
  order: 1;
  margin: 0;
}

.page-products .ov-fact dt {
  order: 2;
  margin-top: 8px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-products .ov-fact-num {
  display: block;
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--amber);
}

.page-products .ov-visual {
  position: relative;
  padding-bottom: 38px;
}

.page-products .ov-chip {
  position: absolute;
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: 82%;
  padding: 8px 12px;
  font-size: 12px;
  line-height: 1.4;
  color: var(--body-text);
  background: rgba(18, 51, 42, 0.95);
  border: 1px solid var(--line);
  z-index: 2;
}

.page-products .ov-chip .mono {
  color: var(--amber-hi);
}

.page-products .ov-chip--amber {
  left: 0;
  bottom: 0;
  border-color: var(--amber);
}

.page-products .ov-chip--cyan {
  top: 14px;
  right: 0;
  border-color: var(--cyan);
}

.page-products .ov-chip--cyan .mono {
  color: var(--cyan);
}

/* ---------- 章节标题 ---------- */
.page-products .ov-sechead {
  display: grid;
  gap: 10px;
  max-width: 66ch;
  margin-bottom: clamp(22px, 3vw, 38px);
}

.page-products .ov-sechead h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(25px, 4.4vw, 40px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-products .ov-lead {
  margin: 0;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.78;
  color: var(--body-text);
}

/* ---------- 01 入口卡片 ---------- */
.page-products .ov-entry {
  border-bottom: 1px solid var(--line);
}

.page-products .ov-entry-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ov-gap);
}

.page-products .ov-entry-card {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: var(--ov-pad);
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 2px solid var(--amber);
}

.page-products .ov-entry-card:nth-child(2) {
  border-top-color: var(--cyan);
}

.page-products .ov-entry-card:nth-child(3) {
  border-top-color: var(--violet);
}

.page-products .ov-entry-icon {
  width: 30px;
  height: 30px;
  color: var(--amber);
}

.page-products .ov-entry-card:nth-child(2) .ov-entry-icon {
  color: var(--cyan);
}

.page-products .ov-entry-card:nth-child(3) .ov-entry-icon {
  color: var(--violet);
}

.page-products .ov-entry-title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.35;
  color: var(--paper);
}

.page-products .ov-entry-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--body-text);
}

/* ---------- 02 段位素材 ---------- */
.page-products .ov-tier {
  border-bottom: 1px solid var(--line);
}

.page-products .ov-tier-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 40px);
}

.page-products .ov-tier-side {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-products .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-products .filter-btn {
  padding: 8px 13px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist);
  background: transparent;
  border: 1px solid var(--line);
  cursor: pointer;
  transition: color 140ms ease, background-color 140ms ease, border-color 140ms ease;
}

.page-products .filter-btn:hover {
  color: var(--amber-hi);
  border-color: var(--amber);
}

.page-products .filter-btn[aria-pressed="true"] {
  color: var(--ink);
  background: var(--amber);
  border-color: var(--amber);
}

.page-products .ov-tier-note {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-products .ov-tier-note .mono {
  color: var(--cyan);
  font-size: 14px;
}

.page-products .ov-tier-media {
  margin-top: 4px;
}

.page-products .ov-tier-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .ov-tier-row {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 16px 0 16px 20px;
  border-bottom: 1px solid var(--line);
}

.page-products .ov-tier-row::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), transparent);
}

.page-products .ov-tier-name {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.1em;
  color: var(--amber-hi);
}

.page-products .ov-tier-text {
  font-size: 15px;
  line-height: 1.75;
  color: var(--body-text);
}

/* ---------- 03 旧版本查询 ---------- */
.page-products .ov-legacy {
  border-bottom: 1px solid var(--line);
}

.page-products .ov-legacy-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 44px);
  align-items: start;
}

.page-products .ov-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-products .ov-step {
  display: grid;
  gap: 8px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.page-products .ov-step:last-child {
  border-bottom: 1px solid var(--line);
}

.page-products .ov-step-num {
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-products .ov-step-title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.4;
  color: var(--paper);
}

.page-products .ov-step-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--body-text);
}

.page-products .ov-legacy-media {
  margin: 0;
}

.page-products .ov-legacy-note {
  margin-top: clamp(22px, 3vw, 34px);
}

/* ---------- 04 房间分类 ---------- */
.page-products .ov-rooms {
  border-bottom: 1px solid var(--line);
}

.page-products .ov-rooms-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ov-gap);
}

.page-products .ov-rooms-media {
  margin: 0;
}

.page-products .ov-room-card {
  padding: var(--ov-pad);
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  display: grid;
  gap: 12px;
  align-content: start;
  transition: border-left-color 160ms ease, transform 160ms ease;
}

.page-products .ov-room-card:nth-child(odd) {
  border-left-color: var(--cyan);
}

.page-products .ov-room-card:nth-child(even) {
  border-left-color: var(--amber);
}

.page-products .ov-room-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.page-products .ov-room-name {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 21px;
  color: var(--paper);
}

.page-products .ov-room-count {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--amber-hi);
}

.page-products .ov-room-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--body-text);
}

.page-products .ov-room-foot {
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 05 平板记录 ---------- */
.page-products .ov-tablet {
  border-bottom: 1px solid var(--line);
}

.page-products .ov-device-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ov-gap);
}

.page-products .ov-device-card {
  padding: var(--ov-pad);
  background: linear-gradient(180deg, var(--panel), rgba(11, 31, 26, 0.4));
  border: 1px solid var(--line);
  display: grid;
  gap: 10px;
}

.page-products .ov-device-size {
  margin: 0;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-products .ov-device-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--body-text);
}

/* ---------- 06 沿革时间线 ---------- */
.page-products .ov-line {
  display: flex;
  gap: 0;
  overflow-x: auto;
  padding-bottom: 14px;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-products .ov-line-item {
  position: relative;
  flex: 0 0 min(258px, 76vw);
  padding: 20px 24px 6px 0;
  border-top: 2px solid var(--line);
  scroll-snap-align: start;
}

.page-products .ov-line-item::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 0;
  width: 10px;
  height: 10px;
  background: var(--cyan);
}

.page-products .ov-line-item:last-child::before {
  background: var(--amber);
}

.page-products .ov-line-year {
  margin: 0 0 10px;
  font-size: 20px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-products .ov-line-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--body-text);
}

/* ---------- 07 常见问题 ---------- */
.page-products .ov-faq {
  border-bottom: 1px solid var(--line);
}

.page-products .ov-faq-list {
  display: grid;
  gap: 2px;
  border-top: 1px solid var(--line);
}

.page-products .ov-faq-list .disclosure {
  border-bottom: 1px solid var(--line);
}

/* ---------- 08 联系 ---------- */
.page-products .ov-cta {
  padding-bottom: clamp(40px, 6vw, 80px);
}

.page-products .ov-cta-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 44px);
  align-items: center;
  padding: clamp(24px, 3.4vw, 44px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 2px solid var(--amber);
}

.page-products .ov-cta-copy h2 {
  margin: 10px 0 16px;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(24px, 3.8vw, 36px);
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-products .ov-cta-text {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--body-text);
}

.page-products .ov-cta-contact {
  display: grid;
  gap: 12px;
  margin: 26px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.page-products .ov-contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  align-items: baseline;
}

.page-products .ov-contact-row dt {
  min-width: 72px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-products .ov-contact-row dd {
  margin: 0;
  font-size: 15px;
  color: var(--amber-hi);
  word-break: break-all;
}

.page-products .ov-cta-media {
  min-width: 0;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-products .ov-entry-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .page-products .ov-entry-card {
    grid-column: span 4;
  }

  .page-products .ov-entry-card:nth-child(2) {
    grid-column: span 5;
    margin-top: 28px;
  }

  .page-products .ov-entry-card:nth-child(3) {
    grid-column: span 3;
    margin-top: 12px;
  }

  .page-products .ov-tier-row {
    grid-template-columns: 118px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }

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

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

  .page-products .ov-legacy-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

@media (min-width: 960px) {
  .page-products .ov-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-products .ov-tier-layout {
    grid-template-columns: minmax(250px, 4fr) minmax(0, 8fr);
  }

  .page-products .ov-tier-side {
    position: sticky;
    top: 24px;
  }

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

  .page-products .ov-cta-panel {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

@media (min-width: 1200px) {
  .page-products .ov-legacy-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .filter-btn,
  .page-products .ov-room-card {
    transition: none;
  }
}