.page-products {
  --pp-pad: clamp(16px, 4vw, 48px);
  --pp-gap: clamp(18px, 2.4vw, 28px);
  --pp-hair: 1px solid rgba(168, 243, 236, .16);
  --pp-hair-strong: 1px solid rgba(46, 230, 214, .42);
  --pp-card-bg: linear-gradient(168deg, rgba(18, 44, 79, .82), rgba(6, 14, 28, .88));
  position: relative;
  padding-inline: var(--pp-pad);
  padding-bottom: clamp(48px, 8vw, 96px);
  color: var(--yh-shell);
  font-family: var(--yh-font-body);
  overflow-x: clip;
}

.page-products > * {
  max-width: var(--yh-shell-w);
  margin-inline: auto;
}

.page-products a {
  color: var(--yh-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 230, 214, .35);
  transition: border-color .25s var(--yh-ease), color .25s var(--yh-ease);
}

.page-products a:hover,
.page-products a:focus-visible {
  color: var(--yh-shell);
  border-bottom-color: var(--yh-cyan);
}

/* ============ 面包屑 ============ */
.page-products .pp-crumbs {
  padding-top: clamp(14px, 2.4vw, 26px);
}

.page-products .pp-crumbs ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--yh-font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--yh-mist);
}

.page-products .pp-crumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(143, 166, 196, .55);
}

.page-products .pp-crumbs li[aria-current="page"] {
  color: var(--yh-glow);
}

/* ============ 首屏框景 ============ */
.page-products .pp-hero {
  position: relative;
  padding-block: clamp(16px, 2.6vw, 32px) clamp(26px, 4.4vw, 52px);
}

.page-products .pp-hero__frame {
  position: relative;
  border: var(--pp-hair);
  border-radius: var(--yh-radius);
  padding: clamp(22px, 4vw, 52px);
  background:
    radial-gradient(115% 135% at 90% -14%, rgba(46, 230, 214, .20), transparent 56%),
    radial-gradient(95% 125% at -12% 112%, rgba(255, 138, 61, .16), transparent 58%),
    linear-gradient(162deg, rgba(18, 44, 79, .92), rgba(11, 31, 58, .66));
  overflow: hidden;
}

.page-products .pp-hero__frame::after {
  content: "";
  position: absolute;
  inset: auto -10% -60% 34%;
  height: 70%;
  background: linear-gradient(112deg, rgba(46, 230, 214, .16), rgba(59, 42, 99, .12) 46%, transparent 78%);
  transform: rotate(-7deg);
  pointer-events: none;
}

.page-products .pp-hero__eyebrow {
  position: relative;
  z-index: 1;
  margin: 0;
  color: var(--yh-orange);
}

.page-products .pp-hero__title {
  position: relative;
  z-index: 1;
  margin: 14px 0 0;
  font-family: var(--yh-font-head);
  font-weight: 900;
  font-size: clamp(30px, 6.4vw, 52px);
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--yh-shell);
  max-width: 20ch;
}

.page-products .pp-hero__lead {
  position: relative;
  z-index: 1;
  margin: 18px 0 0;
  max-width: 60ch;
  color: var(--yh-mist);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
}

.page-products .pp-hero__stats {
  position: relative;
  z-index: 1;
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(10px, 2vw, 22px);
  border-top: var(--pp-hair);
  padding-top: clamp(16px, 2.4vw, 24px);
}

.page-products .pp-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-products .pp-stat__num {
  font-family: var(--yh-font-mono);
  font-size: clamp(20px, 3vw, 30px);
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--yh-cyan);
  line-height: 1.1;
}

.page-products .pp-stat:nth-child(2) .pp-stat__num { color: var(--yh-lime); }
.page-products .pp-stat:nth-child(3) .pp-stat__num { color: var(--yh-orange); }

.page-products .pp-stat__label {
  font-size: 13px;
  color: var(--yh-mist);
}

.page-products .pp-hero__chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: clamp(18px, 3vw, 26px);
  padding: 7px 14px;
  border-radius: 999px;
  border: var(--pp-hair-strong);
  background: rgba(46, 230, 214, .1);
  font-family: var(--yh-font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--yh-cyan);
  white-space: nowrap;
}

.page-products .pp-hero__chip .yh-chip__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--yh-cyan);
  box-shadow: 0 0 10px rgba(46, 230, 214, .9);
}

/* ============ 区块基础 ============ */
.page-products .yh-section {
  position: relative;
  padding-block: clamp(30px, 5vw, 58px);
}

.page-products .yh-section-head {
  max-width: 62ch;
}

.page-products .yh-section-head h2,
.page-products .pp-index__copy h2,
.page-products .pp-record__copy h2,
.page-products .pp-device__copy h2 {
  font-family: var(--yh-font-head);
  font-weight: 800;
  font-size: clamp(23px, 3.4vw, 34px);
  line-height: 1.2;
  letter-spacing: -.015em;
  margin: 10px 0 0;
  color: var(--yh-shell);
}

.page-products .yh-prose {
  margin: 14px 0 0;
  color: var(--yh-mist);
  font-size: clamp(15px, 1.5vw, 16.5px);
  line-height: 1.8;
  max-width: 62ch;
}

.page-products .pp-channels__figure {
  margin: clamp(20px, 3vw, 32px) 0 0;
}

/* ============ 频道错落卡片 ============ */
.page-products .pp-channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(12px, 1.5vw, 16px);
  margin-top: clamp(18px, 2.6vw, 28px);
}

.page-products .pp-channel {
  --pp-accent: var(--yh-cyan);
  --pp-accent-soft: rgba(46, 230, 214, .16);
  position: relative;
  border: var(--pp-hair);
  border-radius: var(--yh-radius-sm);
  background: var(--pp-card-bg);
  padding: 16px 16px 18px;
  overflow: hidden;
  transition: transform .35s var(--yh-ease), border-color .35s var(--yh-ease), box-shadow .35s var(--yh-ease);
}

.page-products .pp-channel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 58%;
  height: 2px;
  background: linear-gradient(90deg, var(--pp-accent), transparent);
}

.page-products .pp-channel:hover,
.page-products .pp-channel:focus-within {
  transform: translateY(-4px);
  border-color: var(--pp-accent);
  box-shadow: 0 14px 34px rgba(6, 14, 28, .55);
}

.page-products .pp-channel--puzzle { --pp-accent: var(--yh-lime); --pp-accent-soft: rgba(184, 241, 77, .14); }
.page-products .pp-channel--duo { --pp-accent: var(--yh-orange); --pp-accent-soft: rgba(255, 138, 61, .16); }
.page-products .pp-channel--idle { --pp-accent: var(--yh-glow); --pp-accent-soft: rgba(168, 243, 236, .14); }
.page-products .pp-channel--daily { --pp-accent: var(--yh-mist); --pp-accent-soft: rgba(143, 166, 196, .16); }

.page-products .pp-channel__no {
  margin: 0;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--pp-accent);
}

.page-products .pp-channel__name {
  margin: 8px 0 0;
  font-family: var(--yh-font-head);
  font-weight: 800;
  font-size: clamp(17px, 1.9vw, 20px);
  line-height: 1.25;
  color: var(--yh-shell);
}

.page-products .pp-channel__beat {
  display: inline-block;
  margin: 10px 0 0;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--pp-accent-soft);
  color: var(--pp-accent);
  font-size: 12px;
  line-height: 1.4;
}

.page-products .pp-channel__desc {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--yh-mist);
}

.page-products .pp-channel__more {
  margin-top: 12px;
}

.page-products .pp-channel__more > summary {
  cursor: pointer;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--pp-accent);
  color: var(--pp-accent);
  font-family: var(--yh-font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  transition: background .28s var(--yh-ease);
}

.page-products .pp-channel__more > summary::-webkit-details-marker { display: none; }

.page-products .pp-channel__more > summary::after {
  content: "+";
  font-size: 13px;
  line-height: 1;
}

.page-products .pp-channel__more[open] > summary::after { content: "–"; }

.page-products .pp-channel__more > summary:hover,
.page-products .pp-channel__more > summary:focus-visible {
  background: var(--pp-accent-soft);
}

.page-products .pp-channel__list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.page-products .pp-channel__list li {
  position: relative;
  padding-left: 14px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--yh-shell);
}

.page-products .pp-channel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--pp-accent);
}

.page-products .pp-channel__time {
  margin: 12px 0 0;
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--yh-mist);
}

/* ============ 索引与目录 ============ */
.page-products .pp-index__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-products .pp-index__steps {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .pp-index__steps li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--yh-shell);
}

.page-products .pp-index__step-no {
  flex: none;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  border: var(--pp-hair-strong);
  color: var(--yh-orange);
  font-size: 12px;
}

.page-products .pp-export {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.page-products .pp-export__hint {
  font-size: 12.5px;
  color: var(--yh-mist);
}

.page-products .pp-export__panel {
  margin-top: 16px;
  border: var(--pp-hair-strong);
  border-radius: var(--yh-radius-sm);
  background: rgba(6, 14, 28, .78);
  backdrop-filter: blur(6px);
  padding: 16px;
}

.page-products .pp-export__panelhead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: var(--pp-hair);
}

.page-products .pp-export__panel-title {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--yh-lime);
}

.page-products .pp-export__body {
  margin: 12px 0 0;
  font-family: var(--yh-font-mono);
  font-size: 12.5px;
  line-height: 1.9;
  letter-spacing: .02em;
  color: var(--yh-glow);
  white-space: pre-wrap;
  word-break: break-word;
}

.page-products .pp-index__note {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--yh-mist);
}

.page-products .pp-index__side {
  display: grid;
  gap: clamp(22px, 3vw, 34px);
}

.page-products .pp-index__stack {
  position: relative;
  display: grid;
  padding: 0 24px 24px 0;
}

.page-products .pp-index__stack > * {
  grid-area: 1 / 1;
}

.page-products .pp-stack-card {
  border-radius: var(--yh-radius-sm);
  min-height: 210px;
}

.page-products .pp-stack-card--shadow {
  transform: translate(22px, 22px) scale(.94);
  background: rgba(59, 42, 99, .45);
  border: var(--pp-hair);
}

.page-products .pp-stack-card--glass {
  transform: translate(11px, 11px) scale(.97);
  background: rgba(168, 243, 236, .07);
  border: var(--pp-hair);
  backdrop-filter: blur(5px);
}

.page-products .pp-stack-card--solid {
  position: relative;
  background: linear-gradient(165deg, rgba(18, 44, 79, .98), rgba(11, 31, 58, .94));
  border: 1px solid rgba(46, 230, 214, .34);
  padding: 18px;
}

.page-products .pp-stack-card__label {
  margin: 0 0 12px;
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--yh-lime);
}

.page-products .pp-stack-card__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-products .pp-stack-card__list li {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: 10px;
  padding-bottom: 9px;
  border-bottom: 1px dashed rgba(168, 243, 236, .14);
  font-size: 14px;
  color: var(--yh-shell);
}

.page-products .pp-stack-card__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-products .pp-stack-card__list .yh-mono {
  font-size: 11.5px;
  color: var(--yh-cyan);
  letter-spacing: .06em;
}

.page-products .pp-stack-card__list em {
  font-style: normal;
  font-family: var(--yh-font-mono);
  font-size: 11.5px;
  color: var(--yh-mist);
}

.page-products .pp-index__figure {
  margin: 0;
}

/* ============ 记录明细 ============ */
.page-products .pp-record__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  align-items: center;
}

.page-products .pp-record__figure {
  margin: 0;
  max-width: 340px;
}

.page-products .pp-record__compare {
  margin-top: 22px;
  display: grid;
  gap: 14px;
}

.page-products .pp-record__box {
  border: var(--pp-hair);
  border-left: 2px solid rgba(143, 166, 196, .5);
  border-radius: var(--yh-radius-sm);
  background: rgba(18, 44, 79, .42);
  padding: 16px 18px;
}

.page-products .pp-record__box--accent {
  border-left-color: var(--yh-orange);
  background: rgba(255, 138, 61, .08);
}

.page-products .pp-record__box-label {
  margin: 0 0 8px;
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--yh-orange);
}

.page-products .pp-record__box p:last-child {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--yh-shell);
}

.page-products .pp-record__note {
  margin: 20px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--yh-mist);
}

/* ============ 历史归档 ============ */
.page-products .pp-archive__banner {
  position: relative;
  margin-top: clamp(20px, 3vw, 32px);
  border-radius: var(--yh-radius);
  overflow: hidden;
  border: var(--pp-hair);
}

.page-products .pp-archive__banner img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  opacity: .78;
}

.page-products .pp-archive__banner-cap {
  margin: 0;
  padding: 12px 18px;
  background: rgba(6, 14, 28, .86);
  font-size: 13px;
  line-height: 1.7;
  color: var(--yh-mist);
}

.page-products .pp-archive__groups {
  margin-top: clamp(22px, 3vw, 34px);
  display: grid;
  gap: clamp(20px, 3vw, 30px);
}

.page-products .pp-archive__group {
  position: relative;
  padding-left: 18px;
}

.page-products .pp-archive__group::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--yh-cyan), rgba(46, 230, 214, .06));
}

.page-products .pp-archive__group-label {
  margin: 0 0 12px;
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--yh-lime);
}

.page-products .pp-vols {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(74px, 1fr));
  gap: 8px;
}

.page-products .pp-vol {
  border: var(--pp-hair);
  border-radius: 10px;
  background: rgba(18, 44, 79, .5);
  padding: 8px 4px 9px;
  text-align: center;
  transition: transform .3s var(--yh-ease), border-color .3s var(--yh-ease), background .3s var(--yh-ease);
}

.page-products .pp-vol:hover,
.page-products .pp-vol:focus-within {
  transform: translateY(-3px);
  border-color: rgba(46, 230, 214, .5);
  background: rgba(46, 230, 214, .1);
}

.page-products .pp-vol__no {
  display: block;
  font-size: 10.5px;
  letter-spacing: .08em;
  color: var(--yh-lime);
}

.page-products .pp-vol__month {
  display: block;
  margin-top: 3px;
  font-size: 14px;
  color: var(--yh-shell);
}

/* ============ 设备适配 ============ */
.page-products .pp-device__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-products .pp-check {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .pp-check__item {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: 12px;
  padding: 14px 16px;
  border: var(--pp-hair);
  border-radius: var(--yh-radius-sm);
  background: rgba(18, 44, 79, .42);
  transition: border-color .3s var(--yh-ease), transform .3s var(--yh-ease);
}

.page-products .pp-check__item:hover {
  border-color: rgba(46, 230, 214, .45);
  transform: translateX(4px);
}

.page-products .pp-check__no {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: rgba(46, 230, 214, .12);
  color: var(--yh-cyan);
  font-size: 12px;
}

.page-products .pp-check__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--yh-shell);
}

.page-products .pp-device__note {
  margin: 20px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--yh-mist);
}

.page-products .pp-device__figure {
  margin: 0;
}

/* ============ 上手三步 ============ */
.page-products .pp-steps {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(12px, 1.6vw, 18px);
}

.page-products .pp-step {
  position: relative;
  border: var(--pp-hair);
  border-radius: var(--yh-radius);
  background: var(--pp-card-bg);
  padding: 20px 18px 22px;
  overflow: hidden;
  transition: transform .35s var(--yh-ease), border-color .35s var(--yh-ease);
}

.page-products .pp-step::after {
  content: "";
  position: absolute;
  left: -30%;
  bottom: -55%;
  width: 90%;
  height: 90%;
  background: radial-gradient(circle, rgba(46, 230, 214, .16), transparent 68%);
  pointer-events: none;
}

.page-products .pp-step:hover {
  transform: translateY(-4px);
  border-color: rgba(46, 230, 214, .45);
}

.page-products .pp-step__no {
  display: block;
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--yh-orange);
}

.page-products .pp-step__title {
  position: relative;
  z-index: 1;
  margin: 12px 0 0;
  font-family: var(--yh-font-head);
  font-weight: 800;
  font-size: clamp(16.5px, 1.9vw, 19px);
  line-height: 1.35;
  color: var(--yh-shell);
}

.page-products .pp-step p {
  position: relative;
  z-index: 1;
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--yh-mist);
}

.page-products .pp-start__note {
  margin: 22px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--yh-mist);
}

/* ============ 响应式 ============ */
@media (min-width: 620px) {
  .page-products .pp-channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-products .pp-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 780px) {
  .page-products .pp-hero__frame {
    padding-right: clamp(180px, 22vw, 260px);
  }

  .page-products .pp-hero__chip {
    position: absolute;
    top: clamp(18px, 2.6vw, 34px);
    right: clamp(18px, 2.6vw, 34px);
    margin-top: 0;
    z-index: 3;
  }
}

@media (min-width: 960px) {
  .page-products .pp-index__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
  }

  .page-products .pp-record__grid {
    grid-template-columns: minmax(0, 340px) minmax(0, 1fr);
  }

  .page-products .pp-device__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }

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

@media (min-width: 1040px) {
  .page-products .pp-channel-grid {
    grid-template-columns: 1.34fr 1fr 1.18fr .96fr 1.08fr;
    align-items: start;
  }

  .page-products .pp-hero__title {
    max-width: 24ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pp-channel,
  .page-products .pp-vol,
  .page-products .pp-check__item,
  .page-products .pp-step {
    transition: none;
  }

  .page-products .pp-channel:hover,
  .page-products .pp-channel:focus-within,
  .page-products .pp-vol:hover,
  .page-products .pp-vol:focus-within,
  .page-products .pp-check__item:hover,
  .page-products .pp-step:hover {
    transform: none;
  }
}