.page-products {
  --dl-line: 1px solid rgba(20, 22, 28, .16);
  --dl-line-dark: 1px solid rgba(244, 239, 230, .18);
  background: var(--paper);
  color: var(--ink);
  overflow-x: hidden;
}

.page-products a {
  color: inherit;
}

/* ---------- 面包屑 ---------- */
.page-products .dl-crumb {
  background: var(--paper);
  padding: .9rem 0 0;
}

.page-products .breadcrumb {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .08em;
  color: var(--slate);
}

.page-products .breadcrumb a {
  color: var(--crimson);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .18s var(--ease);
}

.page-products .breadcrumb a:hover,
.page-products .breadcrumb a:focus-visible {
  border-bottom-color: var(--gold);
}

/* ---------- 首屏 ---------- */
.page-products .dl-hero {
  position: relative;
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(176, 27, 46, .55), rgba(176, 27, 46, 0) 58%),
    var(--indigo);
  color: var(--paper);
  padding: clamp(2.2rem, 5vw, 3.6rem) 0 clamp(3.4rem, 7vw, 5.2rem);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 2.6rem), 0 100%);
}

.page-products .dl-hero__kicker {
  margin: 0 0 .9rem;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .26em;
  color: var(--gold);
  text-transform: uppercase;
}

.page-products .dl-hero h1 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 5.4vw, 3.8rem);
  line-height: 1.12;
  letter-spacing: -.012em;
  color: var(--paper);
  max-width: 22em;
}

.page-products .dl-hero__lead {
  margin: 0;
  max-width: 36em;
  font-size: clamp(1rem, 1.6vw, 1.12rem);
  line-height: 1.85;
  color: rgba(244, 239, 230, .84);
}

.page-products .dl-hero__facts {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .7rem 2.4rem;
}

.page-products .dl-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: .22rem;
  padding-left: .8rem;
  border-left: 2px solid var(--gold);
}

.page-products .dl-hero__facts span {
  font-size: .76rem;
  letter-spacing: .1em;
  color: var(--slate);
}

.page-products .dl-hero__facts strong {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--paper);
}

/* ---------- 目录条 ---------- */
.page-products .dl-toc-band {
  background: var(--paper);
  padding: 0 0 clamp(1.2rem, 3vw, 2rem);
}

.page-products .dl-toc {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: rgba(20, 22, 28, .16);
  border: 1px solid rgba(20, 22, 28, .16);
}

.page-products .dl-toc a {
  display: flex;
  align-items: baseline;
  gap: .75rem;
  padding: .85rem 1rem;
  background: var(--paper);
  font-size: .95rem;
  font-weight: 700;
  text-decoration: none;
  transition: background .18s var(--ease), color .18s var(--ease);
}

.page-products .dl-toc a span {
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .08em;
  color: var(--crimson);
  transition: color .18s var(--ease);
}

.page-products .dl-toc a:hover,
.page-products .dl-toc a:focus-visible {
  background: var(--crimson);
  color: var(--paper);
}

.page-products .dl-toc a:hover span,
.page-products .dl-toc a:focus-visible span {
  color: var(--gold);
}

/* ---------- 分区骨架 ---------- */
.page-products .dl-section {
  padding: clamp(2.4rem, 5.2vw, 4.4rem) 0;
}

.page-products .dl-section--paper {
  background: var(--paper);
}

.page-products .dl-section--warm {
  background: linear-gradient(180deg, #FBF6EE 0%, #F4EFE6 100%);
}

.page-products .dl-section--indigo {
  background: var(--indigo);
  color: var(--paper);
  padding-top: clamp(3.4rem, 6.4vw, 5.4rem);
  clip-path: polygon(0 2.4rem, 100% 0, 100% 100%, 0 100%);
}

.page-products .dl-section--night {
  background: var(--night);
  color: var(--paper);
}

.page-products .dl-head {
  max-width: 44rem;
  margin-bottom: clamp(1.4rem, 3vw, 2.2rem);
}

.page-products .dl-head h2 {
  margin: .8rem 0 .7rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 3.2vw, 2.4rem);
  line-height: 1.22;
  letter-spacing: -.008em;
}

.page-products .dl-head p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.85;
}

.page-products .dl-section--indigo .dl-head p,
.page-products .dl-section--night .dl-head p {
  color: rgba(244, 239, 230, .78);
}

.page-products .dl-head a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(224, 163, 46, .55);
  transition: border-color .18s var(--ease);
}

.page-products .dl-head a:hover,
.page-products .dl-head a:focus-visible {
  border-bottom-color: var(--live);
}

/* ---------- 图片容器 ---------- */
.page-products .media-frame {
  margin: 0;
  border: var(--dl-line);
  box-shadow: 7px 7px 0 rgba(110, 15, 28, .18);
  background: #fff;
}

.page-products .dl-section--indigo .media-frame,
.page-products .dl-section--night .media-frame {
  border-color: rgba(224, 163, 46, .34);
  box-shadow: 7px 7px 0 rgba(14, 21, 51, .75);
  background: #101733;
}

.page-products .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 三种打开方式 ---------- */
.page-products .mode-layout {
  display: grid;
  gap: clamp(1.2rem, 3vw, 2rem);
}

.page-products .mode-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-products .mode-labels {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: 1.2rem;
}

.page-products .mode-label {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .55rem .95rem;
  border: var(--dl-line);
  background: #fff;
  font-size: .92rem;
  font-weight: 700;
  cursor: pointer;
  transition: background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}

.page-products .mode-label__num {
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--slate);
  transition: color .18s var(--ease);
}

.page-products .mode-label:hover {
  border-color: var(--crimson);
}

.page-products #mode-browser:checked ~ .mode-labels .mode-label:nth-child(1),
.page-products #mode-homescreen:checked ~ .mode-labels .mode-label:nth-child(2),
.page-products #mode-desktop:checked ~ .mode-labels .mode-label:nth-child(3) {
  background: var(--crimson);
  border-color: var(--crimson);
  color: var(--paper);
}

.page-products #mode-browser:checked ~ .mode-labels .mode-label:nth-child(1) .mode-label__num,
.page-products #mode-homescreen:checked ~ .mode-labels .mode-label:nth-child(2) .mode-label__num,
.page-products #mode-desktop:checked ~ .mode-labels .mode-label:nth-child(3) .mode-label__num {
  color: var(--gold);
}

.page-products .mode-radio:focus-visible ~ .mode-labels {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.page-products .mode-panel {
  display: none;
  padding: clamp(1.1rem, 2.6vw, 1.8rem);
  background: #fff;
  border: var(--dl-line);
  box-shadow: 6px 6px 0 rgba(110, 15, 28, .13);
}

.page-products #mode-browser:checked ~ .mode-panels .mode-panel:nth-child(1),
.page-products #mode-homescreen:checked ~ .mode-panels .mode-panel:nth-child(2),
.page-products #mode-desktop:checked ~ .mode-panels .mode-panel:nth-child(3) {
  display: block;
}

.page-products .mode-panel h3 {
  margin: 0 0 .4rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.32rem;
  line-height: 1.3;
}

.page-products .mode-panel__sub {
  margin: 0 0 1.1rem;
  font-family: var(--font-mono);
  font-size: .8rem;
  line-height: 1.7;
  color: var(--slate);
}

.page-products .mode-steps {
  list-style: none;
  counter-reset: ms;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .85rem;
}

.page-products .mode-steps li {
  position: relative;
  padding-left: 2.5rem;
  font-size: .97rem;
  line-height: 1.78;
}

.page-products .mode-steps li::before {
  counter-increment: ms;
  content: counter(ms, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: .12rem;
  padding-left: .45rem;
  border-left: 2px solid var(--gold);
  font-family: var(--font-mono);
  font-size: .82rem;
  color: var(--crimson);
}

.page-products .mode-panel__note {
  margin: 1.1rem 0 0;
  padding-top: .85rem;
  border-top: var(--dl-line);
  font-size: .92rem;
  line-height: 1.75;
  color: rgba(20, 22, 28, .72);
}

/* ---------- 码率 ---------- */
.page-products .bitrate-grid {
  display: grid;
  gap: clamp(1.2rem, 3vw, 2rem);
}

.page-products .bitrate-chart {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .8rem;
  align-content: start;
}

.page-products .bitrate-row {
  display: grid;
  grid-template-columns: 4.6rem minmax(3rem, 1fr) auto;
  align-items: center;
  gap: .5rem .9rem;
  padding: .7rem .85rem;
  border: var(--dl-line-dark);
  background: rgba(14, 21, 51, .52);
  transition: background .18s var(--ease), border-color .18s var(--ease);
}

.page-products .bitrate-row:hover,
.page-products .bitrate-row:focus-within {
  background: rgba(14, 21, 51, .88);
  border-color: var(--gold);
}

.page-products .bitrate-res {
  font-family: var(--font-mono);
  font-size: .95rem;
  letter-spacing: .04em;
  color: var(--gold);
}

.page-products .bitrate-bar {
  display: block;
  height: 8px;
  background: rgba(244, 239, 230, .16);
  overflow: hidden;
}

.page-products .bitrate-fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--crimson), var(--orange));
  transition: width .2s var(--ease);
}

.page-products .bitrate-fill--high { width: 100%; }
.page-products .bitrate-fill--mid { width: 64%; }
.page-products .bitrate-fill--low { width: 34%; }

.page-products .bitrate-cond {
  font-family: var(--font-mono);
  font-size: .76rem;
  color: var(--slate);
  white-space: nowrap;
  text-align: right;
}

.page-products .bitrate-note {
  grid-column: 1 / -1;
  margin: 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  font-size: .9rem;
  line-height: 1.75;
  color: rgba(244, 239, 230, .76);
  transition: max-height .2s var(--ease), opacity .2s var(--ease), margin .2s var(--ease);
}

.page-products .bitrate-row:hover .bitrate-note,
.page-products .bitrate-row:focus-within .bitrate-note {
  max-height: 8rem;
  opacity: 1;
  margin-top: .35rem;
}

/* ---------- 换机接续 ---------- */
.page-products .relogin-grid {
  display: grid;
  gap: clamp(1.4rem, 3vw, 2.2rem);
}

.page-products .relogin-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.2rem;
}

.page-products .relogin-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
  padding-bottom: 1.2rem;
  border-bottom: 1px dashed rgba(20, 22, 28, .2);
}

.page-products .relogin-step:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.page-products .relogin-step__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.9rem, 4.6vw, 2.9rem);
  line-height: .88;
  letter-spacing: -.03em;
  color: var(--crimson);
  min-width: 2.7rem;
}

.page-products .relogin-step h3 {
  margin: 0 0 .35rem;
  font-size: 1.06rem;
  font-weight: 800;
  line-height: 1.4;
}

.page-products .relogin-step p {
  margin: 0;
  font-size: .97rem;
  line-height: 1.82;
}

.page-products .relogin-tip {
  margin: clamp(1.4rem, 3vw, 2rem) 0 0;
  padding: 1rem 1.15rem;
  background: rgba(224, 163, 46, .16);
  border-left: 4px solid var(--gold);
  font-size: .95rem;
  line-height: 1.8;
}

.page-products .relogin-tip a {
  color: var(--crimson);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
}

.page-products .relogin-tip a:hover,
.page-products .relogin-tip a:focus-visible {
  border-bottom-color: var(--crimson);
}

/* ---------- 跨联赛切换 ---------- */
.page-products .switch-layout {
  display: grid;
  gap: clamp(1.2rem, 3vw, 2rem);
}

.page-products .switch-copy p {
  margin: 0 0 1rem;
  font-size: 1rem;
  line-height: 1.85;
}

.page-products .switch-copy p:last-child {
  margin-bottom: 0;
}

.page-products .switch-copy a {
  color: var(--crimson);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-products .switch-copy a:hover,
.page-products .switch-copy a:focus-visible {
  color: var(--indigo);
  border-bottom-color: var(--crimson);
}

/* ---------- 环境与兼容 ---------- */
.page-products .compat-visual {
  margin-bottom: clamp(1.4rem, 3vw, 2rem);
}

.page-products .compat-grid {
  display: grid;
  gap: clamp(1.4rem, 3vw, 2.2rem);
}

.page-products .compat-block h3 {
  margin: 0 0 .8rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: .04em;
  color: var(--gold);
}

.page-products .compat-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .92rem;
  line-height: 1.7;
}

.page-products .compat-table th {
  text-align: left;
  padding: .55rem .7rem;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--slate);
  border-bottom: 1px solid rgba(224, 163, 46, .4);
}

.page-products .compat-table td {
  padding: .7rem .7rem;
  vertical-align: top;
  border-bottom: 1px solid rgba(244, 239, 230, .14);
  color: rgba(244, 239, 230, .86);
}

.page-products .compat-table td:first-child {
  font-family: var(--font-mono);
  font-size: .84rem;
  color: var(--paper);
  white-space: nowrap;
}

/* ---------- 版本记录 ---------- */
.page-products .changelog {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .6rem;
}

.page-products .changelog__item {
  border-left: 3px solid var(--gold);
  background: #fff;
  box-shadow: 5px 5px 0 rgba(110, 15, 28, .1);
}

.page-products .changelog__item summary {
  display: grid;
  grid-template-columns: 6.4rem 1fr auto;
  align-items: center;
  gap: .9rem;
  padding: .85rem 1rem;
  cursor: pointer;
  list-style: none;
  transition: background .18s var(--ease);
}

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

.page-products .changelog__item summary:hover {
  background: rgba(176, 27, 46, .06);
}

.page-products .changelog__item details[open] > summary {
  background: rgba(176, 27, 46, .09);
}

.page-products .changelog__ver {
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: .06em;
  color: var(--crimson);
}

.page-products .changelog__title {
  font-size: .98rem;
  font-weight: 700;
}

.page-products .changelog__mark {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--slate);
  white-space: nowrap;
}

.page-products .changelog__less {
  display: none;
}

.page-products .changelog__item details[open] .changelog__more {
  display: none;
}

.page-products .changelog__item details[open] .changelog__less {
  display: inline;
  color: var(--crimson);
}

.page-products .changelog__body {
  padding: .2rem 1rem 1.1rem 7.4rem;
}

.page-products .changelog__body ul {
  margin: 0;
  padding-left: 1.1rem;
  display: grid;
  gap: .4rem;
  font-size: .93rem;
  line-height: 1.78;
  color: rgba(20, 22, 28, .82);
}

.page-products .dl-outro {
  margin: clamp(1.6rem, 3vw, 2.2rem) 0 0;
  max-width: 44em;
  font-size: .96rem;
  line-height: 1.85;
  color: rgba(20, 22, 28, .78);
}

.page-products .dl-outro a {
  color: var(--crimson);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
}

.page-products .dl-outro a:hover,
.page-products .dl-outro a:focus-visible {
  border-bottom-color: var(--crimson);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-products .dl-toc {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .page-products .dl-toc {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-products .mode-layout {
    grid-template-columns: 1.62fr .88fr;
    align-items: start;
  }

  .page-products .mode-visual {
    margin-top: 3.2rem;
  }

  .page-products .bitrate-grid {
    grid-template-columns: 1.28fr .92fr;
    align-items: start;
  }

  .page-products .bitrate-visual {
    margin-top: 1.6rem;
  }

  .page-products .relogin-grid {
    grid-template-columns: 1.6fr .9fr;
    align-items: start;
  }

  .page-products .relogin-visual {
    margin-top: 2.4rem;
  }

  .page-products .switch-layout {
    grid-template-columns: 1fr 1.25fr;
    align-items: start;
  }

  .page-products .compat-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

@media (max-width: 899px) {
  .page-products .bitrate-note {
    max-height: 9rem;
    opacity: 1;
    margin-top: .35rem;
  }
}

@media (max-width: 640px) {
  .page-products .dl-hero {
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 1.5rem), 0 100%);
    padding-bottom: 2.6rem;
  }

  .page-products .dl-section--indigo {
    clip-path: polygon(0 1.4rem, 100% 0, 100% 100%, 0 100%);
    padding-top: 2.8rem;
  }

  .page-products .changelog__item summary {
    grid-template-columns: 1fr auto;
    gap: .25rem .6rem;
  }

  .page-products .changelog__ver {
    grid-column: 1 / -1;
  }

  .page-products .changelog__body {
    padding-left: 1rem;
  }

  .page-products .relogin-step {
    grid-template-columns: 1fr;
    gap: .3rem;
  }

  .page-products .relogin-step__num {
    font-size: 1.7rem;
  }

  .page-products .compat-table td:first-child {
    white-space: normal;
  }
}

@media (max-width: 460px) {
  .page-products .bitrate-row {
    grid-template-columns: 4rem minmax(2.4rem, 1fr);
  }

  .page-products .bitrate-cond {
    grid-column: 1 / -1;
    text-align: left;
  }

  .page-products .mode-label {
    width: 100%;
    justify-content: flex-start;
  }
}