.page-products {
  --sv-rail-w: 164px;
  --sv-hair: rgba(154, 174, 194, 0.24);
  --sv-hair-strong: rgba(154, 174, 194, 0.42);
  --sv-ink-soft: rgba(10, 22, 38, 0.55);
  --sv-panel: #132E4A;
  --sv-panel-deep: #0E2036;
}

/* ---------- 首屏 ---------- */
.page-products .sv-hero {
  position: relative;
  padding: calc(var(--header-h) + 48px) 0 76px;
  background:
    radial-gradient(120% 88% at 86% 4%, rgba(63, 224, 207, 0.16), transparent 58%),
    radial-gradient(96% 74% at 2% 96%, rgba(255, 138, 61, 0.13), transparent 62%),
    var(--ink-900);
  overflow: hidden;
}

.page-products .sv-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.05;
  background-image: repeating-linear-gradient(
    0deg,
    rgba(243, 237, 225, 0.9) 0 1px,
    transparent 1px 3px
  );
}

.page-products .sv-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 44px;
  align-items: center;
}

.page-products .sv-hero .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--slate-300);
}

.page-products .sv-hero .breadcrumb__list li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(154, 174, 194, 0.6);
}

.page-products .sv-hero .breadcrumb__list a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 224, 207, 0.35);
}

.page-products .sv-hero .coord {
  margin: 0 0 14px;
  color: var(--orange-500);
}

.page-products .sv-hero h1 {
  margin: 0 0 22px;
  font-family: var(--font-display);
  font-size: clamp(34px, 7.4vw, 66px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--paper-100);
  text-wrap: balance;
}

.page-products .sv-hero .lede {
  max-width: 40ch;
  margin: 0 0 28px;
  color: var(--text-body);
  font-size: var(--step-0);
  line-height: 1.85;
}

.page-products .sv-hero__pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-products .sv-hero__pills .tag {
  text-decoration: none;
  transition: transform 0.25s ease, background-color 0.25s ease;
}

.page-products .sv-hero__pills .tag:hover,
.page-products .sv-hero__pills .tag:focus-visible {
  transform: translateY(-2px);
}

.page-products .sv-hero__figure {
  margin: 0;
}

.page-products .sv-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--sv-hair);
  box-shadow: var(--shadow-deep);
}

/* ---------- 版式骨架 ---------- */
.page-products .sv-layout {
  display: grid;
  gap: 0;
}

.page-products .sv-body {
  min-width: 0;
}

.page-products .sv-section {
  padding-block: 68px;
  border-top: 1px dashed var(--sv-hair);
}

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

.page-products .section-head {
  margin-bottom: 34px;
}

.page-products .section-head .coord {
  margin: 0 0 10px;
  color: var(--slate-300);
}

.page-products .section-title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(26px, 4.6vw, 40px);
  line-height: 1.22;
  letter-spacing: -0.005em;
  color: var(--paper-100);
  text-wrap: balance;
}

.page-products .section-head .lede {
  max-width: 62ch;
  margin: 0;
  color: var(--text-body);
  font-size: var(--step-0);
  line-height: 1.85;
}

.page-products .aside-note {
  margin-top: 28px;
  color: var(--text-body);
  font-size: 15px;
  line-height: 1.8;
}

.page-products .aside-note a {
  color: var(--cyan-400);
}

.page-products .sv-mono {
  font-family: var(--font-mono);
  font-size: 0.94em;
  color: var(--paper-100);
  word-break: break-all;
}

/* ---------- 通用图框 ---------- */
.page-products .sv-figure {
  margin: 0 0 32px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--sv-hair);
  background: var(--sv-panel-deep);
}

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

/* ---------- A-02 三条路线 ---------- */
.page-products .sv-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
}

.page-products .sv-step {
  position: relative;
  padding: 28px 24px 24px;
  border-radius: var(--radius-md);
  background: var(--sv-panel);
  border: 1px solid var(--sv-hair);
  overflow: hidden;
}

.page-products .sv-step::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
}

.page-products .sv-step--a::before {
  background: var(--cyan-400);
}

.page-products .sv-step--b::before {
  background: var(--orange-500);
}

.page-products .sv-step--c::before {
  background: var(--mint-300);
}

.page-products .sv-step__no {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--slate-300);
}

.page-products .sv-step__name {
  margin: 0 0 18px;
  font-size: var(--step-2);
  line-height: 1.25;
  color: var(--paper-100);
}

.page-products .sv-step__facts {
  margin: 0;
  display: grid;
  gap: 4px 14px;
}

.page-products .sv-step__facts dt {
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mint-300);
}

.page-products .sv-step__facts dd {
  margin: 0 0 12px;
  color: var(--text-body);
  font-size: 15px;
  line-height: 1.78;
}

.page-products .sv-step__more {
  margin: 6px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--sv-hair);
  color: var(--slate-300);
  font-size: 14px;
  line-height: 1.7;
}

.page-products .sv-step__more a {
  color: var(--cyan-400);
  white-space: nowrap;
}

/* ---------- A-03 分类卡片 ---------- */
.page-products .sv-tags {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}

.page-products .sv-tag {
  padding: 22px 22px 20px;
  border-radius: var(--radius-md);
  background: var(--sv-panel-deep);
  border: 1px solid var(--sv-hair);
  border-left: 4px solid var(--mint-300);
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.page-products .sv-tag:nth-child(3n) {
  background: var(--sv-panel);
}

.page-products .sv-tag:hover {
  transform: translateY(-3px);
  border-left-color: var(--cyan-400);
}

.page-products .sv-tag__no {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange-500);
}

.page-products .sv-tag__name {
  margin: 0 0 10px;
  font-size: var(--step-1);
  line-height: 1.35;
  color: var(--paper-100);
}

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

.page-products .sv-tag__fit a {
  color: var(--cyan-400);
}

/* ---------- A-04 替换流程 ---------- */
.page-products .sv-swap {
  list-style: none;
  margin: 0 0 40px;
  padding: 0;
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}

.page-products .sv-swap__step {
  position: relative;
  padding: 22px 20px;
  border-radius: var(--radius-md);
  background: var(--sv-panel);
  border: 1px solid var(--sv-hair);
}

.page-products .sv-swap__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 22px;
  color: var(--cyan-400);
  margin-bottom: 10px;
}

.page-products .sv-swap__name {
  margin: 0 0 10px;
  font-size: var(--step-1);
  line-height: 1.3;
  color: var(--paper-100);
}

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

.page-products .sv-swap__step a {
  color: var(--cyan-400);
}

.page-products .sv-table {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--sv-hair);
  background: var(--paper-100);
}

.page-products .sv-table__head,
.page-products .sv-table__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 16px 20px;
}

.page-products .sv-table__head {
  background: var(--ink-700);
  color: var(--paper-100);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.page-products .sv-table__row {
  border-top: 1px solid rgba(10, 22, 38, 0.12);
  color: var(--ink-900);
  font-size: 15px;
}

.page-products .sv-table__head span:nth-child(1)::before,
.page-products .sv-table__head span:nth-child(2)::before,
.page-products .sv-table__head span:nth-child(3)::before {
  content: none;
}

.page-products .sv-table__old {
  color: rgba(10, 22, 38, 0.72);
  text-decoration: line-through;
  text-decoration-color: var(--orange-500);
  text-decoration-thickness: 2px;
}

.page-products .sv-table__new {
  font-weight: 600;
}

.page-products .sv-table__new a {
  color: #17565E;
  text-decoration: underline;
  text-decoration-color: rgba(23, 86, 94, 0.45);
}

.page-products .sv-table__batch {
  font-family: var(--font-mono);
  font-size: 13px;
  color: rgba(10, 22, 38, 0.7);
}

/* ---------- A-05 合作 ---------- */
.page-products .sv-coop {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
  margin-bottom: 28px;
}

.page-products .sv-coop__card {
  padding: 24px 22px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(63, 224, 207, 0.45);
  background: linear-gradient(180deg, rgba(63, 224, 207, 0.08), rgba(63, 224, 207, 0) 70%), var(--sv-panel);
}

.page-products .sv-coop__name {
  margin: 0 0 12px;
  font-size: var(--step-1);
  color: var(--paper-100);
  line-height: 1.3;
}

.page-products .sv-coop__desc {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-body);
}

.page-products .sv-coop__who {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--mint-300);
}

.page-products .sv-coop__apply {
  padding: 26px 22px;
  border-radius: var(--radius-md);
  background: rgba(19, 46, 74, 0.62);
  border: 1px dashed var(--sv-hair-strong);
  margin-bottom: 34px;
}

.page-products .sv-coop__apply-title {
  margin: 0 0 16px;
  font-size: var(--step-1);
  color: var(--paper-100);
}

.page-products .sv-coop__list {
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-products .sv-coop__list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-body);
}

.page-products .sv-coop__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid var(--orange-500);
}

.page-products .sv-coop__mail {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-body);
}

/* ---------- A-06 答疑 ---------- */
.page-products .sv-support {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
  margin-bottom: 30px;
}

.page-products .sv-support__item {
  padding: 20px;
  border-radius: var(--radius-md);
  background: var(--sv-panel-deep);
  border: 1px solid var(--sv-hair);
  border-top: 3px solid var(--orange-500);
}

.page-products .sv-support__num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(22px, 4vw, 30px);
  line-height: 1.15;
  color: var(--cyan-400);
  margin-bottom: 8px;
}

.page-products .sv-support__label {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-body);
}

.page-products .sv-support__contact {
  padding: 24px 22px;
  border-radius: var(--radius-md);
  background: var(--paper-100);
  color: var(--ink-900);
}

.page-products .sv-support__contact p {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(10, 22, 38, 0.88);
}

.page-products .sv-support__contact .sv-mono {
  color: var(--ink-900);
  font-weight: 600;
}

/* ---------- A-07 自查清单 ---------- */
.page-products .sv-check {
  list-style: none;
  margin: 0 0 34px;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}

.page-products .sv-check__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: start;
  padding: 18px 20px;
  border-radius: var(--radius-sm);
  background: rgba(19, 46, 74, 0.5);
  border: 1px solid var(--sv-hair);
}

.page-products .sv-check__no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--orange-500);
  padding-top: 3px;
}

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

.page-products .sv-closing {
  padding: 28px 24px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(63, 224, 207, 0.12), rgba(255, 138, 61, 0.1)), var(--sv-panel);
  border: 1px solid var(--sv-hair-strong);
}

.page-products .sv-closing p {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-body);
}

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

/* ---------- 右侧索引轨道 ---------- */
.page-products .sv-rail {
  display: none;
}

/* ---------- 渐进增强：窄屏堆叠 ---------- */
@media (min-width: 700px) {
  .page-products .sv-hero {
    padding-bottom: 96px;
  }

  .page-products .sv-steps {
    grid-template-columns: 5fr 4fr 3fr;
    align-items: stretch;
  }

  .page-products .sv-tags {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-products .sv-tag--w1 {
    grid-column: span 2;
  }

  .page-products .sv-tag--w2 {
    grid-column: span 4;
  }

  .page-products .sv-tag--full {
    grid-column: span 6;
  }

  .page-products .sv-swap {
    grid-template-columns: 4fr 3fr 4fr 3fr;
  }

  .page-products .sv-table__head,
  .page-products .sv-table__row {
    grid-template-columns: 1.35fr 1.35fr 0.6fr;
    align-items: baseline;
    gap: 18px;
  }

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

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

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

  .page-products .sv-section {
    padding-block: 88px;
  }
}

@media (min-width: 1024px) {
  .page-products .sv-hero__inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 56px;
  }

  .page-products .sv-hero .lede {
    font-size: var(--step-1);
    max-width: 34ch;
  }

  .page-products .sv-layout {
    grid-template-columns: minmax(0, 1fr) var(--sv-rail-w);
    gap: 56px;
    align-items: start;
  }

  .page-products .sv-rail {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 32px);
    padding-top: 92px;
  }

  .page-products .sv-rail__label {
    margin: 0 0 16px;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.2em;
    color: var(--slate-300);
  }

  .page-products .sv-rail__list {
    list-style: none;
    margin: 0 0 20px;
    padding: 0 0 0 16px;
    border-left: 2px solid rgba(154, 174, 194, 0.24);
    display: grid;
    gap: 14px;
  }

  .page-products .sv-rail__list a {
    display: block;
    font-size: 14px;
    line-height: 1.45;
    color: var(--slate-300);
    text-decoration: none;
    transition: color 0.22s ease, transform 0.22s ease;
  }

  .page-products .sv-rail__list a:hover,
  .page-products .sv-rail__list a:focus-visible {
    color: var(--cyan-400);
    transform: translateX(4px);
  }

  .page-products .sv-rail__no {
    display: block;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    color: var(--orange-500);
    margin-bottom: 2px;
  }

  .page-products .sv-rail__note {
    margin: 0;
    font-size: 12px;
    letter-spacing: 0.08em;
    color: rgba(154, 174, 194, 0.7);
  }

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

@media (min-width: 1280px) {
  .page-products .sv-hero {
    padding-top: calc(var(--header-h) + 72px);
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-products .sv-hero__pills .tag,
  .page-products .sv-tag,
  .page-products .sv-rail__list a {
    transition: none;
  }

  .page-products .sv-hero__pills .tag:hover,
  .page-products .sv-hero__pills .tag:focus-visible,
  .page-products .sv-tag:hover,
  .page-products .sv-rail__list a:hover,
  .page-products .sv-rail__list a:focus-visible {
    transform: none;
  }
}