.page-products {
  --pp-line: 1px solid var(--line-soft);
  --pp-line-strong: 1px solid var(--line);
  --pp-radius: 0;
  background: var(--paper);
  color: var(--ink);
}

.page-products [id] {
  scroll-margin-top: calc(var(--header-h) + 28px);
}

/* ---------- 首屏 ---------- */
.page-products__hero {
  padding: clamp(28px, 4.5vw, 56px) 0 clamp(48px, 7vw, 96px);
  border-bottom: var(--pp-line-strong);
  background:
    linear-gradient(180deg, rgba(227, 232, 239, .55) 0%, rgba(246, 241, 230, 0) 62%),
    var(--paper);
}

.page-products__hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 5vw, 60px);
  align-items: start;
  margin-top: clamp(24px, 3.5vw, 44px);
}

.page-products__hero-copy h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 4.6vw, 54px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--navy);
}

.page-products__hero-copy .lede {
  margin-top: 20px;
  max-width: 34em;
}

.page-products__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-products__hero-meta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: clamp(30px, 4vw, 46px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--line-soft);
  border: var(--pp-line-strong);
}

.page-products__hero-meta li {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 18px;
  background: var(--white);
}

.page-products__hero-meta .page-products__ver {
  align-self: flex-start;
  background: transparent;
  border-left: 0;
  padding: 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--navy);
}

.page-products__meta-label {
  font-size: 13px;
  color: var(--gray);
  letter-spacing: .02em;
}

.page-products__hero-visual {
  position: relative;
  padding-bottom: 26px;
}

.page-products__hero-frame {
  margin: 0;
  padding: 12px;
  background: var(--white);
  border: var(--pp-line-strong);
}

.page-products__hero-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  box-shadow: inset 0 0 0 1px rgba(16, 36, 58, .06);
}

.page-products__badge {
  position: absolute;
  top: 24px;
  right: 0;
  z-index: 2;
  padding: 8px 14px;
  background: var(--red);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
}

.page-products__ver {
  display: inline-block;
  padding: 3px 8px;
  background: var(--mist);
  border-left: 2px solid var(--gold);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--navy);
  white-space: nowrap;
}

.page-products__ver--inv {
  background: rgba(246, 241, 230, .1);
  border-left-color: var(--gold-soft);
  color: var(--gold-soft);
}

/* ---------- 通用章节 ---------- */
.page-products__section {
  padding: clamp(48px, 6.5vw, 92px) 0;
  border-bottom: var(--pp-line-strong);
}

.page-products__section--tint {
  background: var(--mist);
}

.page-products__section--navy {
  background: var(--navy);
  color: var(--text-inv);
}

.page-products .chapter-head--inverse .chapter-head__title {
  color: var(--paper);
}

.page-products .chapter-head--inverse .chapter-head__time {
  color: var(--text-inv-dim);
}

.page-products__section-lede {
  margin-top: 26px;
  max-width: 52ch;
}

.page-products__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 3.6vw, 48px);
  margin-top: clamp(26px, 3.4vw, 42px);
}

.page-products__body--split,
.page-products__body--even {
  margin-top: clamp(24px, 3vw, 40px);
}

.page-products__main > p {
  font-size: 17px;
  line-height: 1.85;
  color: var(--ink);
}

.page-products__main > p + p {
  margin-top: 16px;
}

/* ---------- 版本状态 ---------- */
.page-products__state-list {
  display: grid;
  gap: 12px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-products__state {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  padding: 18px;
  background: var(--white);
  border: var(--pp-line-strong);
  border-left-width: 3px;
  border-left-color: var(--line);
}

.page-products__state--ok {
  border-left-color: var(--teal);
}

.page-products__state--warn {
  border-left-color: var(--gold);
}

.page-products__state--alert {
  border-left-color: var(--red);
}

.page-products__state-mark {
  align-self: start;
  justify-self: start;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--navy);
  background: var(--mist);
}

.page-products__state--ok .page-products__state-mark {
  background: rgba(47, 125, 110, .12);
  color: var(--teal);
}

.page-products__state--warn .page-products__state-mark {
  background: rgba(200, 155, 60, .16);
  color: #8a6620;
}

.page-products__state--alert .page-products__state-mark {
  background: rgba(214, 58, 47, .1);
  color: var(--red);
}

.page-products__state h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  color: var(--navy);
}

.page-products__state p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--gray);
}

/* ---------- 信息条 ---------- */
.page-products__infobar {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: clamp(26px, 3.4vw, 40px) 0 0;
  padding: 0;
  background: var(--line-soft);
  border: var(--pp-line-strong);
}

.page-products__infocell {
  padding: 20px 18px;
  background: var(--white);
}

.page-products__infocell dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--gray);
}

.page-products__infocell dd {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3vw, 32px);
  line-height: 1.05;
  color: var(--navy);
  letter-spacing: -0.01em;
}

/* ---------- 规格表 ---------- */
.page-products__spec-table {
  width: 100%;
}

.page-products__spec-cap {
  caption-side: top;
  text-align: left;
  padding: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--gray);
}

.page-products__spec-table th[scope="row"] {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .05em;
  color: var(--gold-soft);
  white-space: nowrap;
}

.page-products__spec-table td {
  font-size: 15.5px;
  color: var(--ink);
}

.page-products__spec-more {
  margin-top: 18px;
  border: var(--pp-line-strong);
  background: var(--paper);
}

.page-products__spec-more summary {
  list-style: none;
  cursor: pointer;
  padding: 16px 18px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--navy);
  position: relative;
}

.page-products__spec-more summary::-webkit-details-marker {
  display: none;
}

.page-products__spec-more summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  color: var(--gold);
}

.page-products__spec-more[open] summary::after {
  content: "\2212";
}

.page-products__spec-more p {
  margin: 0;
  padding: 0 18px 18px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--gray);
}

/* ---------- 媒体 ---------- */
.page-products__media {
  margin: 0;
}

.page-products__media--center {
  margin-top: clamp(30px, 4vw, 50px);
}

.page-products__media .media-frame {
  border: var(--pp-line-strong);
  background: var(--white);
  padding: 10px;
}

.page-products__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-products__media .media-caption {
  display: block;
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray);
  max-width: 56ch;
}

/* ---------- 变化清单 ---------- */
.page-products__changes {
  counter-reset: none;
  margin: clamp(26px, 3.4vw, 40px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border-top: var(--pp-line-strong);
  border-bottom: var(--pp-line-strong);
}

.page-products__changes li {
  background: transparent;
  padding: 24px 0;
  border-bottom: var(--pp-line);
}

.page-products__changes li:last-child {
  border-bottom: 0;
}

.page-products__changes h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 21px;
  color: var(--navy);
}

.page-products__changes p {
  margin: 0;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--ink);
  max-width: 60ch;
}

/* ---------- 版本对照 ---------- */
.page-products__compare-wrap {
  margin-top: clamp(34px, 4.6vw, 58px);
}

.page-products__compare {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 22px;
}

.page-products__panel {
  border: var(--pp-line-strong);
  background: var(--white);
}

.page-products__panel--new {
  border-color: var(--gold);
  box-shadow: 8px 8px 0 rgba(200, 155, 60, .16);
}

.page-products__panel-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 16px 18px;
  border-bottom: var(--pp-line);
  background: var(--paper);
}

.page-products__panel-head h3 {
  flex: 1 1 100%;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  color: var(--navy);
}

.page-products__chan-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products__chan {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
  border-bottom: var(--pp-line);
  font-size: 15px;
}

.page-products__chan:last-child {
  border-bottom: 0;
}

.page-products__chan-idx {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--gray);
  min-width: 24px;
}

.page-products__chan--pinned {
  background: rgba(200, 155, 60, .14);
  border-left: 3px solid var(--gold);
  padding-left: 15px;
}

.page-products__chan--pinned .page-products__chan-idx {
  color: #8a6620;
}

/* ---------- 三步上手 ---------- */
.page-products__steps {
  display: grid;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: var(--pp-line-strong);
}

.page-products__step {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  padding: 26px 0;
  border-bottom: var(--pp-line);
}

.page-products__step-no {
  font-family: var(--font-mono);
  font-size: 38px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--gold);
}

.page-products__step h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  color: var(--navy);
}

.page-products__step p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink);
  max-width: 46ch;
}

.page-products__step-out {
  margin-top: 10px !important;
  padding-left: 14px;
  border-left: 2px solid var(--gold-soft);
  color: var(--gray) !important;
  font-size: 15px !important;
}

.page-products__linkline {
  margin-top: 22px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--gray);
}

.page-products__linkline a {
  color: var(--navy);
  border-bottom: 2px solid var(--gold);
  text-decoration: none;
}

.page-products__linkline a:hover {
  color: var(--red);
  border-bottom-color: var(--red);
}

/* ---------- 换机迁移 ---------- */
.page-products__migrate {
  margin-top: clamp(26px, 3.4vw, 42px);
  max-width: 62rem;
}

.page-products__migrate-lede {
  margin: 0;
  font-size: clamp(18px, 2.2vw, 22px);
  line-height: 1.7;
  color: var(--text-inv);
  max-width: 40em;
}

.page-products__migrate-facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: clamp(26px, 3.4vw, 40px) 0 30px;
  background: var(--line-inv);
  border: 1px solid var(--line-inv);
}

.page-products__migrate-fact {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px;
  background: var(--navy-deep);
}

.page-products__migrate-fact span:last-child {
  font-size: 14px;
  color: var(--text-inv-dim);
}

/* ---------- 时间线 ---------- */
.page-products__timeline {
  position: relative;
  margin: clamp(30px, 4vw, 48px) 0 0;
  padding: 0 0 0 34px;
  list-style: none;
}

.page-products__timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--gold) 0%, var(--gold-soft) 55%, rgba(200, 155, 60, .18) 100%);
}

.page-products__tl-item {
  position: relative;
  padding-bottom: 34px;
}

.page-products__tl-item:last-child {
  padding-bottom: 0;
}

.page-products__tl-item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 4px;
  width: 12px;
  height: 12px;
  background: var(--paper);
  border: 2px solid var(--gold);
}

.page-products__tl-ver {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--red);
}

.page-products__tl-title {
  margin: 8px 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  color: var(--navy);
}

.page-products__tl-item p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--gray);
  max-width: 56ch;
}

/* ---------- 常见疑问 ---------- */
.page-products__faq {
  margin-top: clamp(26px, 3.2vw, 40px);
  border-top: var(--pp-line-strong);
}

.page-products__faq details {
  border-bottom: var(--pp-line);
}

.page-products__faq summary {
  list-style: none;
  cursor: pointer;
  position: relative;
  padding: 20px 42px 20px 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--navy);
}

.page-products__faq summary::-webkit-details-marker {
  display: none;
}

.page-products__faq summary::after {
  content: "+";
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--gold);
}

.page-products__faq details[open] summary::after {
  content: "\2212";
}

.page-products__faq p {
  margin: 0 0 20px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--gray);
  max-width: 62ch;
}

/* ---------- 下一步 ---------- */
.page-products__next {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  align-items: center;
  margin-top: clamp(34px, 4.4vw, 56px);
  padding: clamp(24px, 3vw, 34px);
  background: var(--white);
  border: var(--pp-line-strong);
  border-left: 4px solid var(--red);
}

.page-products__next h3 {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  color: var(--navy);
}

.page-products__next p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--gray);
  max-width: 50ch;
}

.page-products__next-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-products__hero-meta {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-products__infobar {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-products__state {
    grid-template-columns: auto 1fr;
    align-items: start;
  }

  .page-products__migrate-facts {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 760px) {
  .page-products__compare {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .page-products__panel-head h3 {
    flex: 1;
  }

  .page-products__step {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 26px;
    align-items: start;
  }

  .page-products__step-no {
    font-size: 44px;
  }

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

@media (min-width: 900px) {
  .page-products__body--split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
  }

  .page-products__body--even {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  }

  .page-products__spec-table th[scope="row"] {
    width: 200px;
  }

  .side-note {
    position: sticky;
    top: calc(var(--header-h) + 32px);
    align-self: start;
  }
}

@media (min-width: 1000px) {
  .page-products__hero-grid {
    grid-template-columns: minmax(0, 1.36fr) minmax(0, 1fr);
  }

  .page-products__hero-visual {
    padding-left: 22px;
  }

  .page-products__badge {
    right: 22px;
    top: 34px;
  }
}

@media (min-width: 1180px) {
  .page-products__infobar {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 559px) {
  .page-products__badge {
    position: static;
    display: inline-block;
    margin-top: 12px;
  }

  .page-products__hero-visual {
    padding-bottom: 0;
  }

  .page-products__step-no {
    font-size: 32px;
  }

  .page-products__panel--new {
    box-shadow: 4px 4px 0 rgba(200, 155, 60, .16);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products * {
    transition: none !important;
    animation: none !important;
  }
}