.page-products {
  --pf-rail-w: 236px;
  --pf-line: rgba(14, 43, 76, 0.14);
}

/* ===== 面包屑 ===== */
.page-products .crumbs {
  padding-top: clamp(86px, 12vw, 118px);
}

/* ===== 首屏 ===== */
.page-products .pf-hero {
  position: relative;
  overflow: hidden;
  margin-top: clamp(14px, 2.5vw, 24px);
  padding: clamp(24px, 5vw, 56px) 0 clamp(28px, 5vw, 52px);
  background:
    radial-gradient(120% 96% at 8% 0%, rgba(232, 180, 74, 0.34), transparent 62%),
    linear-gradient(180deg, var(--haiou-white) 0%, var(--amber-light) 160%);
  border-top: 1px solid var(--pf-line);
  border-bottom: 1px solid var(--pf-line);
}

.page-products .pf-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(7, 24, 43, 0.045) 0 1px,
    transparent 1px 4px
  );
}

.page-products .pf-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 40px);
  align-items: end;
  position: relative;
  z-index: 1;
}

.page-products .pf-hero__title {
  margin: 10px 0 0;
  color: var(--deep-blue);
  font-size: clamp(30px, 5.4vw, 56px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  max-width: 17em;
}

.page-products .pf-hero__lede {
  margin: 18px 0 0;
  max-width: 40em;
  color: var(--deep-blue);
  font-size: 16px;
  line-height: 1.8;
}

.page-products .pf-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.page-products .pf-hero__meta {
  padding: 18px 20px;
  background: var(--glass-white);
  border: 1px solid rgba(14, 43, 76, 0.18);
  border-radius: var(--radius);
  backdrop-filter: blur(6px);
}

.page-products .pf-hero__meta-h {
  margin: 0 0 10px;
  color: var(--brick-red);
}

.page-products .pf-vers {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-products .pf-vers__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 8px;
  border-bottom: 1px dashed rgba(14, 43, 76, 0.24);
}

.page-products .pf-vers__row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-products .pf-vers__k {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gray-blue);
}

.page-products .pf-vers__v {
  font-size: 18px;
  font-weight: 700;
  color: var(--deep-blue);
  letter-spacing: 0.04em;
}

.page-products .pf-hero__meta-note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray-blue);
}

/* ===== 主栅格：左索引 + 右面板 ===== */
.page-products .pf-stage {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 44px);
  padding-top: clamp(28px, 5vw, 56px);
  padding-bottom: clamp(48px, 8vw, 104px);
}

.page-products .pf-rail__head {
  margin: 0 0 12px;
  color: var(--brick-red);
}

.page-products .pf-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-products .pf-rail__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 13px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--pf-line);
  background: var(--haiou-white);
  text-decoration: none;
  color: var(--deep-blue);
  font-size: 14px;
  transition: border-color 0.24s var(--ease), background-color 0.24s var(--ease);
}

.page-products .pf-rail__link:hover,
.page-products .pf-rail__link:focus-visible {
  border-color: var(--retro-red);
  background: var(--amber-light);
}

.page-products .pf-rail__num {
  font-size: 12px;
  color: var(--brick-red);
  letter-spacing: 0.08em;
}

.page-products .pf-rail__note {
  margin-top: 20px;
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  background: var(--ink-blue);
  color: var(--haiou-white);
}

.page-products .pf-rail__note-v {
  margin: 0;
  font-size: clamp(26px, 4vw, 34px);
  font-weight: 700;
  color: var(--electric-teal);
  letter-spacing: 0.04em;
}

.page-products .pf-rail__note-t {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: rgba(247, 244, 236, 0.82);
}

.page-products .pf-flow {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
  min-width: 0;
}

/* ===== 画板 ===== */
.page-products .pf-block {
  position: relative;
  padding: clamp(20px, 4vw, 40px);
  background: var(--haiou-white);
  border: 1px solid var(--pf-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  min-width: 0;
}

.page-products .pf-block--amber {
  background: linear-gradient(180deg, var(--haiou-white) 0%, rgba(245, 223, 168, 0.5) 100%);
}

.page-products .pf-block--screen {
  background: var(--deep-blue);
  color: var(--haiou-white);
  border-color: rgba(47, 197, 182, 0.35);
  box-shadow: var(--shadow-panel);
}

.page-products .pf-block--screen .pf-block__title,
.page-products .pf-block--screen .pf-block__copy {
  color: var(--haiou-white);
}

.page-products .pf-block--screen .pf-block__lede {
  color: rgba(247, 244, 236, 0.78);
}

.page-products .pf-block__head {
  display: flex;
  align-items: flex-start;
  gap: clamp(12px, 2.5vw, 22px);
}

.page-products .pf-block__num {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: clamp(52px, 9vw, 74px);
  padding: 8px 10px;
  background: var(--ink-blue);
  color: var(--tv-amber);
  border-radius: var(--radius-sm);
  font-size: clamp(20px, 3.4vw, 30px);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1;
}

.page-products .pf-block--screen .pf-block__num {
  background: var(--electric-teal);
  color: var(--ink-blue);
}

.page-products .pf-block__ht {
  min-width: 0;
}

.page-products .pf-block__title {
  margin: 0;
  font-size: clamp(21px, 3vw, 30px);
  line-height: 1.25;
  color: var(--deep-blue);
  letter-spacing: -0.01em;
}

.page-products .pf-block__lede {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--gray-blue);
  max-width: 46em;
}

.page-products .pf-block__copy {
  margin: 20px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--deep-blue);
  max-width: 62ch;
}

.page-products .pf-block__copy--tight {
  margin-top: 0;
}

.page-products .pf-block__tip {
  margin: 20px 0 0;
  padding: 12px 16px;
  border-left: 3px solid var(--electric-teal);
  background: rgba(47, 197, 182, 0.1);
  border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--deep-blue);
}

/* ===== 三个入口列表 ===== */
.page-products .pf-rows {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .pf-row {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  padding: 16px 18px;
  border: 1px solid var(--pf-line);
  border-left: 4px solid var(--brick-red);
  border-radius: var(--radius-sm);
  background: var(--haiou-white);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-products .pf-row:nth-child(2) {
  border-left-color: var(--electric-teal);
}

.page-products .pf-row:nth-child(3) {
  border-left-color: var(--tv-amber);
}

.page-products .pf-row:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-soft);
}

.page-products .pf-row__idx {
  font-size: 15px;
  font-weight: 700;
  color: var(--gray-blue);
  letter-spacing: 0.08em;
  padding-top: 2px;
}

.page-products .pf-row__name {
  margin: 0;
  font-size: 17px;
  line-height: 1.4;
  color: var(--deep-blue);
}

.page-products .pf-row__body p {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--gray-blue);
}

.page-products .pf-row__go {
  align-self: center;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--amber-light);
  color: var(--deep-blue);
  text-decoration: none;
  font-size: 17px;
  transition: background-color 0.24s var(--ease), color 0.24s var(--ease);
}

.page-products .pf-row__go:hover,
.page-products .pf-row__go:focus-visible {
  background: var(--retro-red);
  color: #fff;
}

/* ===== 轮次时间轴 ===== */
.page-products .pf-line {
  position: relative;
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 6px;
}

.page-products .pf-line::before {
  content: "";
  position: absolute;
  top: 9px;
  left: 8%;
  right: 8%;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--gray-blue) 0%, var(--electric-teal) 55%, var(--retro-red) 100%);
  opacity: 0.55;
}

.page-products .pf-line__node {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding-top: 0;
  text-align: center;
}

.page-products .pf-line__dot {
  width: 14px;
  height: 14px;
  margin-top: 3px;
  border-radius: 50%;
  background: var(--haiou-white);
  border: 2px solid var(--gray-blue);
}

.page-products .pf-line__n {
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--gray-blue);
}

.page-products .pf-line__node.is-now .pf-line__dot {
  background: var(--retro-red);
  border-color: var(--retro-red);
  box-shadow: 0 0 0 5px rgba(217, 72, 31, 0.18);
}

.page-products .pf-line__node.is-now .pf-line__n {
  color: var(--retro-red);
  font-weight: 700;
}

.page-products .pf-line__tip {
  display: block;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--retro-red);
  white-space: nowrap;
}

.page-products .pf-line__node.is-next .pf-line__dot {
  border-style: dashed;
}

.page-products .pf-line__cap {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray-blue);
}

/* ===== 桌面端数字面板 ===== */
.page-products .pf-figs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.page-products .pf-fig {
  padding: 16px;
  border: 1px solid rgba(47, 197, 182, 0.3);
  border-radius: var(--radius-sm);
  background: rgba(7, 24, 43, 0.72);
}

.page-products .pf-fig__v {
  display: block;
  font-size: clamp(22px, 3.4vw, 32px);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--electric-teal);
  line-height: 1.15;
}

.page-products .pf-fig__k {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(247, 244, 236, 0.7);
}

.page-products .pf-grid2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 22px;
}

.page-products .pf-card {
  padding: 18px 20px;
  border-radius: var(--radius-sm);
  background: var(--amber-light);
  border: 1px solid rgba(168, 62, 42, 0.22);
}

.page-products .pf-block--screen .pf-card {
  background: rgba(247, 244, 236, 0.07);
  border-color: rgba(232, 180, 74, 0.32);
}

.page-products .pf-card__t {
  margin: 0;
  font-size: 16px;
  line-height: 1.4;
  color: var(--deep-blue);
}

.page-products .pf-card p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--deep-blue);
}

.page-products .pf-block--screen .pf-card__t {
  color: var(--tv-amber);
}

.page-products .pf-block--screen .pf-card p {
  color: rgba(247, 244, 236, 0.84);
}

/* ===== 安卓版双栏 ===== */
.page-products .pf-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 36px);
  margin-top: 22px;
  align-items: start;
}

.page-products .pf-chips {
  margin-top: 20px;
}

.page-products .pf-bullets {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .pf-bullets li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--deep-blue);
}

.page-products .pf-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  background: var(--brick-red);
}

.page-products .pf-phone {
  position: relative;
  margin: 0 auto;
  width: min(100%, 300px);
  padding: 14px 12px 18px;
  border-radius: 34px;
  background: var(--deep-blue);
  border: 2px solid var(--ink-blue);
  box-shadow: var(--shadow-panel);
}

.page-products .pf-phone__notch {
  display: block;
  width: 64px;
  height: 6px;
  margin: 0 auto 12px;
  border-radius: 3px;
  background: rgba(247, 244, 236, 0.4);
}

.page-products .pf-phone .media__img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 20px;
  object-fit: cover;
}

/* ===== 版本刻度尺 ===== */
.page-products .pf-ruler {
  margin-top: 26px;
}

.page-products .pf-ruler__bar {
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--deep-blue) 0%, var(--electric-teal) 38%, var(--tv-amber) 72%, var(--retro-red) 100%);
}

.page-products .pf-ruler__marks {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.page-products .pf-ruler__mark {
  padding-left: 12px;
  border-left: 2px solid var(--pf-line);
}

.page-products .pf-ruler__mark span {
  display: block;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gray-blue);
}

.page-products .pf-ruler__mark em {
  display: block;
  margin-top: 4px;
  font-size: 14px;
  font-style: normal;
  line-height: 1.5;
  color: var(--deep-blue);
}

.page-products .pf-ruler__mark--now {
  border-left-color: var(--retro-red);
}

.page-products .pf-ruler__mark--now span,
.page-products .pf-ruler__mark--now em {
  color: var(--retro-red);
  font-weight: 700;
}

/* ===== 上手三步 ===== */
.page-products .pf-steps {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
  counter-reset: pf-step;
}

.page-products .pf-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--pf-line);
  background: linear-gradient(90deg, rgba(245, 223, 168, 0.55), rgba(247, 244, 236, 0));
}

.page-products .pf-step__n {
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 700;
  color: var(--retro-red);
  letter-spacing: 0.04em;
  line-height: 1;
  padding-top: 3px;
}

.page-products .pf-step__t {
  margin: 0;
  font-size: 16px;
  line-height: 1.4;
  color: var(--deep-blue);
}

.page-products .pf-step p {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray-blue);
}

/* ===== 使用场景 ===== */
.page-products .pf-scenes {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 22px;
}

.page-products .pf-scene {
  padding: 18px 20px;
  border-radius: var(--radius-sm);
  background: var(--haiou-white);
  border: 1px solid var(--pf-line);
  border-top: 3px solid var(--electric-teal);
}

.page-products .pf-scene:nth-child(2) {
  border-top-color: var(--tv-amber);
}

.page-products .pf-scene:nth-child(3) {
  border-top-color: var(--retro-red);
}

.page-products .pf-scene__t {
  margin: 0;
  font-size: 16px;
  line-height: 1.4;
  color: var(--deep-blue);
}

.page-products .pf-scene p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray-blue);
}

/* ===== 旁注 ===== */
.page-products .pf-note {
  margin-top: 20px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  background: rgba(232, 180, 74, 0.18);
  border: 1px dashed rgba(168, 62, 42, 0.35);
}

.page-products .pf-note__k {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--brick-red);
}

.page-products .pf-note__v {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--deep-blue);
}

/* ===== 图片容器补充 ===== */
.page-products .pf-shot {
  margin: clamp(22px, 3.5vw, 32px) 0 0;
  border-radius: var(--radius);
  border: 1px solid var(--pf-line);
}

.page-products .pf-shot--screen {
  border-color: rgba(47, 197, 182, 0.4);
  box-shadow: 0 0 0 6px rgba(7, 24, 43, 0.6);
}

.page-products .pf-shot--ruler {
  border-color: rgba(232, 180, 74, 0.7);
}

.page-products .pf-shot .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ===== 收尾 ===== */
.page-products .pf-outro {
  padding: clamp(26px, 4vw, 44px);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(90% 130% at 100% 0%, rgba(47, 197, 182, 0.28), transparent 60%),
    linear-gradient(150deg, var(--ink-blue) 0%, var(--deep-blue) 100%);
  color: var(--haiou-white);
}

.page-products .pf-outro__t {
  margin: 0;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.25;
  color: var(--haiou-white);
  letter-spacing: -0.01em;
}

.page-products .pf-outro__p {
  margin: 14px 0 0;
  max-width: 44em;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(247, 244, 236, 0.82);
}

.page-products .pf-outro__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-products .pf-outro__note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(247, 244, 236, 0.66);
}

.page-products .pf-outro__note a {
  color: var(--tv-amber);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ===== 桌面布局 ===== */
@media (min-width: 860px) {
  .page-products .pf-hero__inner {
    grid-template-columns: minmax(0, 1fr) minmax(240px, 280px);
  }

  .page-products .pf-grid2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .page-products .pf-split {
    grid-template-columns: minmax(0, 1fr) minmax(240px, 300px);
  }

  .page-products .pf-phone {
    margin: 0;
  }
}

@media (min-width: 1000px) {
  .page-products .pf-stage {
    grid-template-columns: var(--pf-rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-products .pf-rail {
    position: sticky;
    top: 104px;
    align-self: start;
  }

  .page-products .pf-rail__list {
    flex-direction: column;
    flex-wrap: nowrap;
  }

  .page-products .pf-rail__link {
    justify-content: flex-start;
  }

  .page-products .pf-row {
    grid-template-columns: 40px minmax(0, 1fr) auto;
    padding: 20px 22px;
  }

  .page-products .pf-line__n {
    font-size: 16px;
  }
}

@media (min-width: 1200px) {
  .page-products .pf-block {
    padding: clamp(32px, 3.4vw, 48px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pf-row,
  .page-products .pf-row__go,
  .page-products .pf-rail__link {
    transition: none;
  }

  .page-products .pf-row:hover {
    transform: none;
  }
}