.page-products {
  --sv-panel: rgba(8, 36, 58, .78);
  --sv-panel-strong: rgba(8, 36, 58, .94);
  --sv-line: rgba(14, 58, 90, .95);
  --sv-gold-line: rgba(215, 168, 74, .40);
  --sv-neon-line: rgba(55, 242, 214, .34);
  --sv-gap: clamp(18px, 2.6vw, 30px);
}

/* ============ 框景首屏 ============ */
.page-products .sv-hero {
  position: relative;
  padding: clamp(20px, 3.4vw, 38px) 0 clamp(34px, 5vw, 66px);
  overflow: hidden;
}

.page-products .sv-hero::before {
  content: "";
  position: absolute;
  inset: -30% -12% auto -12%;
  height: 150%;
  background:
    radial-gradient(58% 52% at 16% 10%, rgba(55, 242, 214, .10), transparent 64%),
    radial-gradient(46% 44% at 90% 6%, rgba(215, 168, 74, .15), transparent 68%);
  pointer-events: none;
}

.page-products .sv-hero > .wrap {
  position: relative;
  z-index: 1;
}

.page-products .sv-hero__frame {
  margin-top: clamp(14px, 2.4vw, 26px);
  border: 1px solid var(--sv-line);
  background: linear-gradient(170deg, rgba(8, 36, 58, .95), rgba(4, 17, 31, .70));
  clip-path: var(--clip-corner);
  box-shadow: 0 26px 60px -34px rgba(0, 0, 0, .95);
}

.page-products .sv-hero__bar {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  padding: 11px clamp(16px, 2.4vw, 30px);
  border-bottom: 1px solid var(--sv-line);
  background: linear-gradient(90deg, rgba(215, 168, 74, .16), transparent 72%);
  color: var(--c-mist);
  font-size: 12px;
  letter-spacing: .12em;
}

.page-products .sv-hero__pulse {
  width: 7px;
  height: 7px;
  flex: none;
  background: var(--c-neon-400);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
  box-shadow: 0 0 0 4px rgba(55, 242, 214, .12);
}

.page-products .sv-hero__bar .mono:last-child {
  margin-left: auto;
  color: var(--c-gold-300);
}

.page-products .sv-hero__body {
  display: grid;
  gap: clamp(24px, 3.6vw, 48px);
  padding: clamp(24px, 3.8vw, 46px) clamp(16px, 2.4vw, 38px) clamp(26px, 4vw, 48px);
}

.page-products .sv-hero__lead h1 {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(30px, 5.2vw, 54px);
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--c-paper);
}

.page-products .sv-hero__lead p {
  margin: 0 0 26px;
  max-width: 44em;
  color: var(--c-mist);
  font-size: 16px;
  line-height: 1.85;
}

.page-products .sv-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-products .sv-hero__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--sv-line);
  border: 1px solid var(--sv-line);
  clip-path: var(--clip-corner-sm);
}

.page-products .sv-hero__stats li {
  background: var(--sv-panel);
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-products .sv-hero__num {
  font-size: 24px;
  font-weight: 700;
  color: var(--c-gold-300);
  line-height: 1.1;
}

.page-products .sv-hero__cap {
  font-size: 13px;
  color: var(--c-mist);
  line-height: 1.5;
}

/* ============ 左侧索引轨道 + 右侧内容流 ============ */
.page-products .sv-shell {
  padding-bottom: clamp(40px, 6vw, 84px);
}

.page-products .sv-rail {
  margin-bottom: 28px;
}

.page-products .sv-rail__label {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .26em;
  color: var(--c-gold-500);
}

.page-products .sv-track {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
}

.page-products .sv-track a {
  flex: none;
  padding: 8px 14px;
  border: 1px solid var(--sv-line);
  background: rgba(8, 36, 58, .6);
  color: var(--c-mist);
  text-decoration: none;
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: .04em;
  white-space: nowrap;
  clip-path: var(--clip-corner-sm);
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}

.page-products .sv-track a:hover {
  color: var(--c-gold-300);
  border-color: var(--sv-gold-line);
}

.page-products .sv-track a[aria-current="true"] {
  color: var(--c-ink-900);
  background: var(--c-gold-500);
  border-color: var(--c-gold-500);
}

.page-products .sv-rail__note {
  margin: 14px 0 0;
  font-size: 13px;
  color: var(--c-mist);
  line-height: 1.7;
}

.page-products .sv-rail__note a {
  color: var(--c-neon-400);
  text-decoration: none;
  border-bottom: 1px solid var(--sv-neon-line);
}

/* ============ 章节通用 ============ */
.page-products .sv-sec {
  padding-top: clamp(38px, 5vw, 68px);
  border-top: 1px solid var(--sv-line);
}

.page-products .sv-sec:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-products .sv-sec .section__lead {
  max-width: 62ch;
}

.page-products .sv-shot {
  margin: clamp(22px, 3vw, 34px) 0;
}

.page-products .sv-jump {
  margin: clamp(20px, 3vw, 30px) 0 0;
}

/* ============ 01 技能树 ============ */
.page-products .sv-tree {
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0 0 0 clamp(18px, 3vw, 34px);
  position: relative;
  display: grid;
  gap: 12px;
}

.page-products .sv-tree::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 14px;
  width: 2px;
  background: linear-gradient(180deg, var(--c-gold-500), rgba(55, 242, 214, .55) 62%, transparent);
}

.page-products .sv-tree__node {
  position: relative;
}

.page-products .sv-tree__node::before {
  content: "";
  position: absolute;
  left: calc(-1 * clamp(18px, 3vw, 34px) - 4px);
  top: 21px;
  width: 10px;
  height: 2px;
  background: var(--c-gold-500);
}

.page-products .sv-tree__node details {
  border: 1px solid var(--sv-line);
  background: var(--sv-panel);
  clip-path: var(--clip-corner-sm);
  transition: border-color .2s ease, background .2s ease;
}

.page-products .sv-tree__node details[open] {
  border-color: var(--sv-gold-line);
  background: var(--sv-panel-strong);
}

.page-products .sv-tree__node summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 14px;
  align-items: baseline;
  padding: 15px 18px;
}

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

.page-products .sv-tree__num {
  font-size: 13px;
  color: var(--c-neon-400);
  letter-spacing: .1em;
}

.page-products .sv-tree__name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
  color: var(--c-paper);
}

.page-products .sv-tree__hint {
  grid-column: 2;
  font-size: 13px;
  color: var(--c-mist);
}

.page-products .sv-tree__body {
  padding: 0 18px 18px;
  border-top: 1px dashed var(--sv-line);
  margin-top: 2px;
  padding-top: 14px;
}

.page-products .sv-tree__body p {
  margin: 0 0 10px;
  color: var(--c-mist);
  font-size: 15px;
  line-height: 1.8;
}

.page-products .sv-tree__jump {
  margin: 0 !important;
}

.page-products .sv-tree__jump a {
  color: var(--c-gold-300);
  text-decoration: none;
  font-size: 14px;
  border-bottom: 1px solid var(--sv-gold-line);
}

/* ============ 02 PC 端 ============ */
.page-products .sv-pcgrid {
  margin-top: 6px;
}

.page-products .sv-card {
  transition: transform .22s ease, border-color .22s ease;
}

.page-products .sv-card:hover {
  transform: translateY(-3px);
  border-color: var(--sv-gold-line);
}

/* ============ 03 手机专区 ============ */
.page-products .sv-mobile__stage {
  margin-top: clamp(24px, 3.4vw, 40px);
  display: grid;
  gap: clamp(24px, 3.6vw, 44px);
  padding: clamp(22px, 3.4vw, 40px);
  border: 1px solid var(--sv-line);
  background:
    radial-gradient(70% 60% at 24% 18%, rgba(55, 242, 214, .12), transparent 66%),
    linear-gradient(160deg, rgba(8, 36, 58, .95), rgba(4, 17, 31, .82));
  clip-path: var(--clip-corner);
}

.page-products .sv-device {
  margin: 0;
  max-width: 320px;
  justify-self: center;
  width: 100%;
}

.page-products .sv-device__glass {
  position: relative;
  padding: 10px;
  border: 1px solid var(--sv-gold-line);
  background: linear-gradient(180deg, rgba(4, 17, 31, .95), rgba(8, 36, 58, .70));
  clip-path: polygon(20px 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%, 0 20px);
  box-shadow: 0 30px 70px -40px rgba(55, 242, 214, .5);
}

.page-products .sv-device__glass img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  object-position: top center;
}

.page-products .sv-device__cap {
  margin: 12px 0 0;
  text-align: center;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--c-gold-300);
}

.page-products .sv-hots {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-products .sv-hots li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--sv-line);
}

.page-products .sv-hots li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-products .sv-hots__dot {
  width: 9px;
  height: 9px;
  margin-top: 7px;
  flex: none;
  background: var(--c-neon-400);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
  box-shadow: 0 0 0 4px rgba(55, 242, 214, .12);
}

.page-products .sv-hots strong {
  display: block;
  margin-bottom: 5px;
  font-size: 16px;
  color: var(--c-paper);
  font-weight: 600;
}

.page-products .sv-hots p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-mist);
}

/* ============ 04 账户设置 ============ */
.page-products .sv-setgrid {
  margin-top: 6px;
}

.page-products .sv-card--step {
  border-left: 2px solid var(--c-gold-500);
}

.page-products .sv-fields {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--sv-line);
  border: 1px solid var(--sv-line);
  clip-path: var(--clip-corner-sm);
}

.page-products .sv-fields li {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px;
  padding: 14px 18px;
  background: var(--sv-panel);
  color: var(--c-mist);
  font-size: 15px;
  line-height: 1.7;
}

/* ============ 05 内容目录 ============ */
.page-products .sv-catgrid {
  margin-top: 6px;
}

.page-products .sv-cat {
  padding: 20px 18px;
  border: 1px solid var(--sv-line);
  background: var(--sv-panel);
  clip-path: var(--clip-corner-sm);
}

.page-products .sv-cat__num {
  display: block;
  font-size: 30px;
  font-weight: 700;
  color: var(--c-gold-300);
  line-height: 1.1;
}

.page-products .sv-cat__name {
  margin: 8px 0 6px;
  font-size: 15px;
  color: var(--c-paper);
  font-weight: 600;
}

.page-products .sv-cat__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-mist);
}

.page-products .sv-note {
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 16px 18px;
  border: 1px solid var(--sv-line);
  border-left: 2px solid var(--c-neon-400);
  background: rgba(4, 17, 31, .6);
  color: var(--c-mist);
  font-size: 15px;
  line-height: 1.85;
}

/* ============ 06 反馈闭环 ============ */
.page-products .sv-tickets {
  display: grid;
  gap: 14px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-products .sv-ticket {
  padding: 18px;
  border: 1px solid var(--sv-line);
  background: var(--sv-panel);
  clip-path: var(--clip-corner-sm);
  border-top: 2px solid var(--sv-gold-line);
  transition: transform .22s ease, border-color .22s ease;
}

.page-products .sv-ticket:hover {
  transform: translateY(-3px);
  border-color: var(--sv-neon-line);
}

.page-products .sv-ticket__title {
  margin: 12px 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  color: var(--c-paper);
}

.page-products .sv-ticket p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-mist);
}

/* ============ 结尾行动区 ============ */
.page-products .sv-cta {
  margin-top: clamp(40px, 5vw, 70px);
  padding: clamp(26px, 3.8vw, 46px) clamp(20px, 3vw, 40px);
  border: 1px solid var(--sv-gold-line);
  background:
    radial-gradient(80% 100% at 88% 0%, rgba(215, 168, 74, .16), transparent 70%),
    linear-gradient(150deg, rgba(8, 36, 58, .96), rgba(4, 17, 31, .86));
  clip-path: var(--clip-corner);
}

.page-products .sv-cta h2 {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1.28;
  color: var(--c-paper);
}

.page-products .sv-cta p {
  margin: 0 0 24px;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-mist);
}

.page-products .sv-cta__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ============ 响应式 ============ */
@media (min-width: 641px) {
  .page-products .sv-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-products .sv-mobile__stage {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    align-items: start;
  }

  .page-products .sv-device {
    justify-self: start;
  }
}

@media (min-width: 1001px) {
  .page-products .sv-shell {
    display: grid;
    grid-template-columns: 230px minmax(0, 1fr);
    gap: clamp(30px, 4vw, 58px);
    align-items: start;
  }

  .page-products .sv-rail {
    position: sticky;
    top: 108px;
    margin-bottom: 0;
  }

  .page-products .sv-track {
    flex-direction: column;
    overflow-x: visible;
    padding-bottom: 0;
    gap: 6px;
  }

  .page-products .sv-track a {
    border-left: 2px solid var(--sv-line);
    clip-path: none;
    background: transparent;
    white-space: normal;
  }

  .page-products .sv-track a[aria-current="true"] {
    background: rgba(215, 168, 74, .14);
    color: var(--c-gold-300);
    border-left-color: var(--c-gold-500);
  }

  .page-products .sv-hero__body {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }

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

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

@media (prefers-reduced-motion: reduce) {
  .page-products .sv-card,
  .page-products .sv-ticket,
  .page-products .sv-track a {
    transition: none;
  }

  .page-products .sv-card:hover,
  .page-products .sv-ticket:hover {
    transform: none;
  }
}