.page-products {
  --rail-size: 34px;
  --step-line: var(--edge);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  overflow-x: clip;
}

.page-products .breadcrumbs {
  margin-top: clamp(18px, 3vw, 34px);
}

/* ---------- 首屏 ---------- */
.page-products .tools-hero {
  padding-block: clamp(26px, 5vw, 56px) clamp(48px, 7vw, 92px);
}

.page-products .split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.page-products .side-note {
  display: flex;
  align-items: center;
  gap: 14px;
}

.page-products .vertical {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.34em;
  color: var(--ink-2);
  text-transform: uppercase;
  writing-mode: horizontal-tb;
}

.page-products .hero-mark {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold);
  border: 1px solid var(--edge);
  border-radius: 999px;
  padding: 3px 10px;
}

.page-products .hero-main h1 {
  margin: 10px 0 0;
  font-size: clamp(34px, 8.4vw, 84px);
  line-height: 1.06;
  font-weight: 900;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.page-products .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--crimson);
  text-transform: uppercase;
}

.page-products .lede {
  max-width: 62ch;
  margin: 20px 0 0;
  font-size: clamp(15px, 1.75vw, 18px);
  line-height: 1.85;
  color: var(--ink-2);
}

.page-products .hero-jump {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
}

.page-products .jump-link {
  display: inline-block;
  padding: 7px 14px;
  border: 1px solid var(--edge);
  border-radius: 999px;
  font-size: 14px;
  color: var(--ink);
  text-decoration: none;
  background: rgba(255, 255, 255, 0.5);
  transition: border-color 0.2s ease, transform 0.2s ease, color 0.2s ease;
}

.page-products .jump-link:hover,
.page-products .jump-link:focus-visible {
  transform: translateY(-2px);
  border-color: var(--gold);
  color: var(--crimson);
}

.page-products .jump-link:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 2px;
}

/* ---------- 右侧进度轨道 ---------- */
.page-products .rail {
  display: none;
  position: fixed;
  right: clamp(8px, 1.4vw, 22px);
  top: 50%;
  transform: translateY(-50%);
  z-index: 20;
  flex-direction: column;
  gap: 8px;
}

.page-products .rail a {
  width: var(--rail-size);
  height: var(--rail-size);
  display: grid;
  place-items: center;
  border-radius: 999px;
  border: 1px solid var(--edge);
  background: var(--paper);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-2);
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.page-products .rail a[data-active="true"] {
  border-color: var(--neon);
  background: var(--midnight);
  color: var(--neon);
}

.page-products .rail a:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 2px;
}

/* ---------- 通用章节 ---------- */
.page-products .tools-sec {
  padding-block: 0 clamp(72px, 9vw, 96px);
}

.page-products .sec-num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
}

.page-products .sec-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--ink-2);
}

.page-products .sec-body > h2 {
  margin: 0 0 14px;
  font-size: clamp(24px, 4.2vw, 40px);
  line-height: 1.2;
  font-weight: 900;
  letter-spacing: -0.01em;
}

.page-products .rule-line {
  max-width: 68ch;
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-2);
}

.page-products .rule-line a {
  color: var(--crimson);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .rule-line a:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 2px;
}

.page-products .gold-line {
  border: 0;
  border-top: 1px solid var(--gold);
  margin: 0;
}

/* ---------- 图片框 ---------- */
.page-products .figure-frame {
  margin: clamp(20px, 3vw, 30px) 0;
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(16, 26, 51, 0.06), rgba(200, 160, 44, 0.08));
  overflow: hidden;
  box-shadow: var(--shadow-1);
}

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

.page-products .figure-frame--wide img { aspect-ratio: 16 / 9; }
.page-products .figure-frame--tall img { aspect-ratio: 4 / 5; }

.page-products .figure-frame--glow {
  box-shadow: var(--shadow-2), 0 0 0 1px rgba(62, 224, 206, 0.18) inset;
}

/* ---------- 七步 ---------- */
.page-products .step-list {
  list-style: none;
  margin: clamp(22px, 3.5vw, 34px) 0 0;
  padding: 0;
}

.page-products .step {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  padding: 0 0 clamp(24px, 3vw, 34px);
}

.page-products .step:last-child {
  padding-bottom: 0;
}

.page-products .step-badge {
  position: relative;
  z-index: 1;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: var(--crimson);
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  box-shadow: var(--shadow-1);
}

.page-products .step:not(:last-child) .step-badge::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  width: 1px;
  height: calc(100% + clamp(24px, 3vw, 34px) - 12px);
  transform: translateX(-50%);
  background: linear-gradient(to bottom, var(--gold), rgba(217, 210, 194, 0.4));
}

.page-products .step-text h3 {
  margin: 6px 0 8px;
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.35;
  font-weight: 700;
}

.page-products .step-text p {
  max-width: 62ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-2);
}

/* ---------- 折叠面板 ---------- */
.page-products .rule-fold {
  margin-top: 12px;
  border: 1px solid var(--edge);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.55);
}

.page-products .rule-fold summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  cursor: pointer;
  list-style: none;
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--crimson);
}

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

.page-products .rule-fold summary::before {
  content: "▸";
  display: inline-block;
  transform: rotate(0deg);
  transition: transform 0.2s ease;
  color: var(--gold);
  font-size: 12px;
}

.page-products .rule-fold[open] summary::before {
  transform: rotate(90deg);
}

.page-products .rule-fold summary:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 2px;
}

.page-products .rule-fold p {
  margin: 0;
  padding: 0 14px 14px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-2);
}

.page-products .fold-block {
  margin-top: 0;
  background: var(--paper);
  box-shadow: var(--shadow-1);
}

/* ---------- 速查卡 ---------- */
.page-products .quick-grid {
  margin-top: clamp(24px, 3.5vw, 36px);
}

.page-products .quick-card {
  padding: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.page-products .quick-card .figure-frame {
  margin: 0;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.page-products .quick-card .figure-frame--tall img { aspect-ratio: 4 / 3; }

.page-products .quick-card .card-kicker {
  margin: 18px 20px 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--gold);
  text-transform: uppercase;
}

.page-products .quick-card .card-title {
  margin: 0 20px 12px;
  font-size: clamp(18px, 2.4vw, 23px);
  line-height: 1.3;
  font-weight: 800;
}

.page-products .quick-list,
.page-products .quick-steps {
  list-style: none;
  margin: 0 20px;
  padding: 0;
}

.page-products .quick-list li {
  padding: 11px 0;
  border-top: 1px solid var(--edge);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-2);
}

.page-products .quick-list .k {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--ink);
  margin-right: 8px;
}

.page-products .quick-steps li {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 10px;
  padding: 11px 0;
  border-top: 1px solid var(--edge);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-2);
}

.page-products .quick-steps .mono {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--gold);
}

.page-products .quick-foot {
  margin: auto 20px 20px;
  padding-top: 14px;
  border-top: 1px dashed var(--edge);
  font-size: 13px;
  line-height: 1.8;
  color: var(--ink-2);
}

.page-products .quick-foot a {
  color: var(--crimson);
  text-underline-offset: 3px;
}

/* ---------- 分类板块 ---------- */
.page-products .board-grid {
  margin-top: clamp(20px, 3vw, 30px);
}

.page-products .board-card {
  padding: 18px;
}

.page-products .board-card .card-title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 800;
}

.page-products .board-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-2);
}

/* ---------- 登录与设备 ---------- */
.page-products .session-stack {
  margin-top: clamp(20px, 3vw, 30px);
  gap: 12px;
}

/* ---------- 版本对照表 ---------- */
.page-products .table-wrap {
  margin-top: clamp(20px, 3vw, 30px);
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  overflow-x: auto;
  background: rgba(255, 255, 255, 0.55);
  box-shadow: var(--shadow-1);
}

.page-products .compare-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 14.5px;
}

.page-products .compare-table th,
.page-products .compare-table td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--edge);
  line-height: 1.7;
}

.page-products .compare-table thead th {
  background: var(--crimson);
  color: var(--paper);
  font-size: 13px;
  letter-spacing: 0.08em;
  border-bottom: 0;
}

.page-products .compare-table tbody th[scope="row"] {
  font-weight: 700;
  color: var(--ink);
  white-space: nowrap;
  background: rgba(217, 210, 194, 0.22);
}

.page-products .compare-table tbody td {
  color: var(--ink-2);
}

.page-products .compare-table tbody tr:last-child th,
.page-products .compare-table tbody tr:last-child td {
  border-bottom: 0;
}

/* ---------- 手机细节 ---------- */
.page-products .habit-grid {
  margin-top: clamp(20px, 3vw, 30px);
}

.page-products .habit-card {
  padding: 20px;
}

.page-products .habit-card .card-kicker {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-products .habit-card .card-title {
  margin: 0 0 8px;
  font-size: 17px;
  line-height: 1.4;
  font-weight: 800;
}

.page-products .habit-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-2);
}

.page-products .closing-band {
  margin-top: clamp(28px, 4vw, 46px);
  padding: clamp(22px, 3.4vw, 34px);
  border-radius: var(--radius);
  background: var(--midnight);
  color: var(--paper);
  border: 1px solid rgba(62, 224, 206, 0.25);
}

.page-products .closing-band p {
  margin: 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(247, 242, 232, 0.86);
}

.page-products .closing-band a {
  color: var(--neon);
  text-underline-offset: 3px;
}

.page-products .closing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-products .closing-actions .btn--ghost {
  color: var(--paper);
  border-color: rgba(247, 242, 232, 0.35);
  background: transparent;
}

.page-products .closing-actions .btn--ghost:hover,
.page-products .closing-actions .btn--ghost:focus-visible {
  border-color: var(--neon);
  color: var(--neon);
}

.page-products .tools-sec--last {
  padding-bottom: clamp(84px, 11vw, 130px);
}

/* ---------- 平板 ---------- */
@media (min-width: 700px) {
  .page-products .split {
    grid-template-columns: 148px 1fr;
    gap: clamp(20px, 3vw, 42px);
  }

  .page-products .side-note {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .page-products .vertical {
    writing-mode: vertical-rl;
    letter-spacing: 0.4em;
  }

  .page-products .quick-card .figure-frame--tall img { aspect-ratio: 4 / 5; }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1024px) {
  .page-products .split {
    grid-template-columns: 196px 1fr;
    gap: clamp(30px, 4vw, 62px);
  }

  .page-products .rail {
    display: flex;
  }
}

@media (min-width: 1180px) {
  .page-products .sec-body {
    max-width: 900px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .jump-link,
  .page-products .rail a,
  .page-products .rule-fold summary::before {
    transition: none;
  }

  .page-products .jump-link:hover,
  .page-products .jump-link:focus-visible {
    transform: none;
  }
}