.page-home {
  --ph-tint-top: #121A44;
  --ph-slab: clamp(18px, 3vw, 34px);
  --ph-track-w: 178px;
  display: block;
}

/* ---------- 首屏 ---------- */
.page-home .ph-hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding: calc(var(--header-h) + clamp(30px, 6vw, 66px)) 0 clamp(34px, 5vw, 64px);
  background-color: var(--ink-900);
  background-image:
    linear-gradient(163deg, var(--ph-tint-top) 0 40%, var(--cyan) 40% 40.22%, rgba(10, 15, 44, 0) 40.22%),
    linear-gradient(180deg, rgba(10, 15, 44, 0) 0%, var(--ink-900) 100%);
}

.page-home .ph-hero__texture {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
  pointer-events: none;
}

.page-home .ph-hero__inner {
  position: relative;
  z-index: 1;
}

.page-home .ph-hero__eyebrow {
  margin: 0 0 clamp(14px, 2vw, 22px);
  color: var(--cyan);
}

.page-home .ph-hero__title {
  max-width: 15ch;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 6.6vw, 4.3rem);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-home .ph-hero__lead {
  max-width: 56ch;
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  font-size: clamp(1rem, 1.6vw, 1.0625rem);
  line-height: 1.8;
  color: var(--text-dim);
}

.page-home .ph-hero__actions {
  margin-top: clamp(22px, 3vw, 32px);
}

/* ---------- 横向批次对照条 ---------- */
.page-home .ph-compare {
  position: relative;
  z-index: 1;
  margin-top: clamp(38px, 6vw, 72px);
  display: grid;
  gap: 1px;
  background: var(--line-600);
  border: 1px solid var(--line-600);
  overflow: hidden;
}

.page-home .ph-compare__cell {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--ink-800);
}

.page-home .ph-compare__cell--current {
  background: var(--wash);
  box-shadow: inset 3px 0 0 var(--cyan);
}

.page-home .ph-compare__label {
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  color: var(--text-dim);
}

.page-home .ph-compare__code {
  font-size: clamp(1.4rem, 3.4vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-home .ph-compare__meta {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--text-dim);
}

.page-home .ph-compare__copy {
  align-self: flex-start;
  margin-top: 4px;
}

/* ---------- 改版说明 ---------- */
.page-home .ph-change__body {
  display: grid;
  gap: var(--gap);
}

.page-home .ph-change__panels {
  display: grid;
  gap: 16px;
}

.page-home .ph-panel {
  padding: clamp(18px, 2.4vw, 26px);
}

.page-home .ph-panel__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.125rem, 2.2vw, 1.375rem);
  line-height: 1.35;
  color: var(--text);
}

.page-home .ph-panel__text {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-home .ph-change__figure {
  margin: 0;
}

/* ---------- 批次时间轴 ---------- */
.page-home .ph-time__scroll {
  position: relative;
}

.page-home .ph-timeline {
  overflow-x: auto;
  overflow-y: hidden;
  padding: 6px 0 14px;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
}

.page-home .ph-timeline:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 6px;
}

.page-home .ph-timeline__track {
  position: relative;
  display: flex;
  margin: 0;
  padding: 0 2px;
  list-style: none;
  min-width: max-content;
}

.page-home .ph-timeline__track::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 15px;
  height: 2px;
  background: linear-gradient(90deg, var(--line-600) 0%, var(--amber) 58%, var(--cyan) 100%);
}

.page-home .ph-node {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: var(--ph-track-w);
  padding: 42px 24px 0 0;
  scroll-snap-align: start;
}

.page-home .ph-node__ring {
  position: absolute;
  top: 4px;
  left: 0;
  fill: var(--ink-900);
  stroke: var(--line-600);
  stroke-width: 2;
}

.page-home .ph-node__code {
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text);
}

.page-home .ph-node__label {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--text-dim);
}

.page-home .ph-node--current .ph-node__ring {
  stroke: var(--cyan);
}

.page-home .ph-node--current .ph-node__code {
  color: var(--cyan);
}

.page-home .ph-node--current::after {
  content: "";
  position: absolute;
  top: 11px;
  left: 7px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--cyan);
}

.page-home .ph-time__hint {
  margin: 6px 0 0;
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

/* ---------- 两步路径 ---------- */
.page-home .ph-steps__grid {
  display: grid;
  gap: var(--gap);
}

.page-home .ph-steps__head {
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-home .ph-steps__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--line-500);
  border-top: 1px solid var(--line-500);
  border-bottom: 1px solid var(--line-500);
}

.page-home .ph-step {
  display: grid;
  grid-template-columns: 56px 1fr;
  grid-template-areas:
    "no title"
    "no text";
  gap: 6px 14px;
  padding: clamp(18px, 2.4vw, 24px) 0;
  background: var(--ink-900);
}

.page-home .ph-step__no {
  grid-area: no;
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1;
  color: var(--amber);
}

.page-home .ph-step__title {
  grid-area: title;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.0625rem, 2vw, 1.25rem);
  color: var(--text);
}

.page-home .ph-step__text {
  grid-area: text;
  margin: 0;
  max-width: 54ch;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-home .ph-steps__text .wd-btn-row {
  margin-top: clamp(20px, 3vw, 30px);
}

.page-home .ph-steps__figure {
  margin: 0;
}

/* ---------- 往期资料 ---------- */
.page-home .ph-archive {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.page-home .ph-archive__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.24;
}

.page-home .ph-archive__inner {
  position: relative;
  border-left: 2px solid var(--cyan);
  padding-left: clamp(18px, 3vw, 34px);
}

.page-home .ph-archive__title {
  max-width: 22ch;
  margin: 12px 0 0;
}

.page-home .ph-archive__text {
  max-width: 62ch;
  margin: clamp(16px, 2.2vw, 22px) 0 0;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-home .ph-archive__inner .wd-btn-row {
  margin-top: clamp(20px, 3vw, 28px);
}

/* ---------- 服务范围与支持 ---------- */
.page-home .ph-support__grid {
  display: grid;
  gap: 1px;
  background: var(--line-500);
  border: 1px solid var(--line-500);
}

.page-home .ph-support__card {
  padding: clamp(20px, 2.6vw, 28px);
  background: var(--ink-800);
}

.page-home .ph-support__num {
  display: block;
  font-size: clamp(1.5rem, 3.6vw, 2.125rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--cyan);
  word-break: break-word;
}

.page-home .ph-support__title {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.0625rem;
  color: var(--text);
}

.page-home .ph-support__text {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--text-dim);
  word-break: break-word;
}

.page-home .ph-support__actions {
  margin-top: clamp(20px, 3vw, 30px);
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 860px) {
  .page-home .ph-compare {
    grid-template-columns: 1.3fr 1fr 1fr;
  }

  .page-home .ph-change__body {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-home .ph-steps__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
    align-items: center;
  }

  .page-home .ph-support__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1180px) {
  .page-home .ph-hero__title {
    max-width: 18ch;
  }

  .page-home .ph-timeline__track {
    padding-right: 40px;
  }
}