.page-home {
  padding-block: clamp(20px, 3.4vw, 44px) clamp(48px, 7vw, 92px);
}

.page-home .breadcrumbs {
  margin-bottom: clamp(14px, 2vw, 24px);
}

/* ---------- 图片容器 ---------- */
.page-home .ph-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-lg);
  border: 1px solid var(--line-1);
  background:
    repeating-linear-gradient(135deg, rgba(176, 196, 222, .07) 0 12px, rgba(176, 196, 222, .02) 12px 24px),
    var(--c-ink-2);
}

.page-home .ph-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-home .ph-figure__caption {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--text-3);
}

/* ---------- 首屏 ---------- */
.page-home .ph-opening {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 42px);
  align-items: start;
  padding-block: clamp(6px, 1.6vw, 18px) clamp(26px, 3.4vw, 44px);
  border-bottom: 1px solid var(--line-1);
}

.page-home .ph-opening__index {
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--c-accent);
}

.page-home .ph-opening__title {
  margin: 0 0 20px;
  font-size: clamp(28px, 5.6vw, 50px);
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: -.012em;
  color: var(--text-1);
}

.page-home .ph-opening__lead {
  margin: 0 0 14px;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text-2);
}

.page-home .ph-opening__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

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

/* ---------- 数据锚点 ---------- */
.page-home .ph-anchors {
  padding-block: clamp(22px, 3vw, 38px);
  border-bottom: 1px solid var(--line-1);
}

.page-home .ph-anchors__row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap);
}

.page-home .ph-anchor {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px 18px 22px;
  border-radius: var(--r-md);
  background: var(--c-ink-2);
  border: 1px solid var(--line-1);
  overflow: hidden;
}

.page-home .ph-anchor::before {
  content: "";
  position: absolute;
  inset-block: 0;
  inset-inline-start: 0;
  width: 3px;
  background: var(--c-accent);
}

.page-home .ph-anchor:nth-child(2)::before { background: var(--c-steel); }
.page-home .ph-anchor:nth-child(3)::before { background: var(--c-amber); }
.page-home .ph-anchor:nth-child(4)::before { background: var(--c-slate); }

.page-home .ph-anchor__num {
  font-size: clamp(24px, 3.6vw, 36px);
  font-weight: 700;
  line-height: 1.05;
  color: var(--text-1);
  letter-spacing: -.01em;
}

.page-home .ph-anchor__small {
  font-size: .5em;
  margin-inline-start: 2px;
  color: var(--text-3);
}

.page-home .ph-anchor__label {
  font-size: 13px;
  line-height: 1.55;
  color: var(--text-3);
}

/* ---------- 产品线 ---------- */
.page-home .ph-lines {
  padding-block: clamp(32px, 4.4vw, 62px);
  border-bottom: 1px solid var(--line-1);
}

.page-home .ph-lines .section__head {
  max-width: 68ch;
}

.page-home .ph-lines .section__head h2 {
  margin: 8px 0 14px;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.28;
  font-weight: 800;
  color: var(--text-1);
}

.page-home .ph-lines .section__lead {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--text-2);
}

.page-home .ph-lines .filterbar {
  margin-top: 24px;
}

.page-home .ph-lines__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
  margin-top: 22px;
}

.page-home .ph-line {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 22px;
  border-radius: var(--r-lg);
  background: var(--c-ink-2);
  border: 1px solid var(--line-1);
  transition: transform var(--t-med), border-color var(--t-med), box-shadow var(--t-med);
}

.page-home .ph-line:hover,
.page-home .ph-line:focus-within {
  transform: translateY(-4px);
  border-color: var(--line-2);
  box-shadow: var(--shadow-1);
}

.page-home .ph-line__tag {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--c-accent);
}

.page-home .ph-line__title {
  margin: 0;
  font-size: 19px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--text-1);
}

.page-home .ph-line__scene {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--text-2);
}

.page-home .ph-line__price {
  margin: 4px 0 0;
  font-size: 14px;
  color: var(--text-1);
  padding: 8px 12px;
  border-radius: var(--r-sm);
  background: rgba(255, 107, 53, .1);
  border: 1px solid rgba(255, 107, 53, .3);
  align-self: flex-start;
}

.page-home .ph-line__price .mono {
  font-weight: 700;
  color: var(--c-accent);
}

.page-home .ph-line__detail {
  margin-top: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-3);
}

.page-home .ph-line__detail p {
  margin: 0;
}

.page-home .ph-line .btn {
  margin-top: auto;
  align-self: flex-start;
}

@media (hover: hover) and (pointer: fine) {
  .page-home .ph-line__detail {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height var(--t-med), opacity var(--t-med), padding var(--t-med);
    border-top: 1px solid transparent;
    padding-top: 0;
  }

  .page-home .ph-line:hover .ph-line__detail,
  .page-home .ph-line:focus-within .ph-line__detail,
  .page-home .ph-line:focus .ph-line__detail {
    max-height: 200px;
    opacity: 1;
    padding-top: 12px;
    border-top-color: var(--line-1);
  }
}

/* ---------- 双口径 ---------- */
.page-home .ph-dual {
  padding-block: clamp(32px, 4.4vw, 62px);
  border-bottom: 1px solid var(--line-1);
}

.page-home .ph-dual .section__head {
  max-width: 68ch;
}

.page-home .ph-dual .section__head h2 {
  margin: 8px 0 14px;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.28;
  font-weight: 800;
  color: var(--text-1);
}

.page-home .ph-dual .section__lead {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--text-2);
}

.page-home .ph-dual__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
  margin-top: 26px;
}

.page-home .ph-gauge {
  display: flex;
  flex-direction: column;
  border-radius: var(--r-xl);
  overflow: hidden;
  border: 1px solid var(--line-1);
  background: var(--c-ink-2);
}

.page-home .ph-gauge--accent {
  box-shadow: inset 0 3px 0 0 var(--c-accent);
}

.page-home .ph-gauge--slate {
  box-shadow: inset 0 3px 0 0 var(--c-slate);
}

.page-home .ph-gauge__figure {
  margin: 0;
  position: relative;
  overflow: hidden;
  background:
    repeating-linear-gradient(135deg, rgba(176, 196, 222, .06) 0 12px, rgba(176, 196, 222, .02) 12px 24px),
    var(--c-ink-3);
}

.page-home .ph-gauge__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-home .ph-gauge__body {
  padding: 24px 22px 26px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-home .ph-gauge__kicker {
  margin: 0;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--c-accent);
}

.page-home .ph-gauge--slate .ph-gauge__kicker {
  color: var(--c-slate);
}

.page-home .ph-gauge__title {
  margin: 0;
  font-size: clamp(18px, 2.3vw, 22px);
  font-weight: 800;
  line-height: 1.4;
  color: var(--text-1);
}

.page-home .ph-gauge__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-home .ph-gauge__list li {
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: baseline;
  gap: 4px 8px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line-1);
}

.page-home .ph-gauge__list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-home .ph-gauge__num {
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--text-1);
}

.page-home .ph-gauge--accent .ph-gauge__num { color: var(--c-accent); }
.page-home .ph-gauge--slate .ph-gauge__num { color: var(--c-slate); }

.page-home .ph-gauge__unit {
  font-size: 13px;
  color: var(--text-3);
}

.page-home .ph-gauge__desc {
  grid-column: 1 / -1;
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--text-2);
}

.page-home .ph-gauge .btn {
  align-self: flex-start;
}

/* ---------- 合作生态 ---------- */
.page-home .ph-eco {
  padding-block: clamp(32px, 4.4vw, 62px);
  border-bottom: 1px solid var(--line-1);
}

.page-home .ph-eco__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 40px);
  align-items: start;
}

.page-home .ph-eco h2 {
  margin: 8px 0 16px;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.28;
  font-weight: 800;
  color: var(--text-1);
}

.page-home .ph-eco__lead {
  margin: 0 0 22px;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--text-2);
}

.page-home .ph-eco__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0 0 24px;
}

.page-home .ph-fact {
  padding: 14px 16px;
  border-radius: var(--r-md);
  background: var(--c-ink-3);
  border: 1px solid var(--line-1);
}

.page-home .ph-fact__key {
  margin: 0 0 6px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--text-3);
}

.page-home .ph-fact__val {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  color: var(--c-mist);
}

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

.page-home .ph-frame--tall img {
  aspect-ratio: 8 / 5;
}

/* ---------- 时间轴 ---------- */
.page-home .ph-timeline {
  padding-block: clamp(32px, 4.4vw, 62px);
  border-bottom: 1px solid var(--line-1);
}

.page-home .ph-timeline .section__head {
  max-width: 68ch;
}

.page-home .ph-timeline .section__head h2 {
  margin: 8px 0 14px;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.28;
  font-weight: 800;
  color: var(--text-1);
}

.page-home .ph-timeline .section__lead {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--text-2);
}

.page-home .ph-tl {
  position: relative;
  margin: 28px 0 0;
  padding: 0 0 0 26px;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-home .ph-tl::before {
  content: "";
  position: absolute;
  inset-block: 12px 12px;
  inset-inline-start: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--c-accent) 0%, var(--c-slate) 55%, rgba(122, 139, 153, .12) 100%);
}

.page-home .ph-tl__item {
  position: relative;
}

.page-home .ph-tl__item::before {
  content: "";
  position: absolute;
  inset-inline-start: -25px;
  top: 20px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--c-slate);
  box-shadow: 0 0 0 4px rgba(122, 139, 153, .16);
}

.page-home .ph-tl__item:first-child::before {
  background: var(--c-accent);
  box-shadow: 0 0 0 4px rgba(255, 107, 53, .18);
}

.page-home .ph-tl__item .fold {
  border-radius: var(--r-md);
  background: var(--c-ink-2);
  border: 1px solid var(--line-1);
  overflow: hidden;
}

.page-home .ph-tl__item .fold > summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

.page-home .ph-tl__item .fold > summary::-webkit-details-marker {
  display: none;
}

.page-home .ph-tl__year {
  font-size: 15px;
  font-weight: 700;
  color: var(--c-slate);
  padding: 2px 10px;
  border-radius: var(--r-pill);
  background: rgba(122, 139, 153, .14);
  flex-shrink: 0;
}

.page-home .ph-tl__item:first-child .ph-tl__year {
  color: var(--c-accent);
  background: rgba(255, 107, 53, .14);
}

.page-home .ph-tl__head {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-1);
  flex: 1 1 220px;
  min-width: 0;
}

.page-home .ph-tl__item .fold__body {
  padding: 0 18px 18px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-2);
  border-top: 1px dashed var(--line-1);
  padding-top: 14px;
}

.page-home .ph-tl__item .fold__body p {
  margin: 0;
}

.page-home .ph-timeline__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

/* ---------- 动态 ------------------ */
.page-home .ph-news {
  padding-block: clamp(32px, 4.4vw, 62px) clamp(10px, 2vw, 20px);
}

.page-home .ph-news .section__head {
  max-width: 64ch;
}

.page-home .ph-news .section__head h2 {
  margin: 8px 0 12px;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.28;
  font-weight: 800;
  color: var(--text-1);
}

.page-home .ph-news .section__lead {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--text-2);
}

.page-home .ph-news__list {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.page-home .ph-news__link {
  display: flex;
  flex-direction: column;
  gap: 10px;
  height: 100%;
  padding: 22px;
  border-radius: var(--r-lg);
  background: var(--c-ink-2);
  border: 1px solid var(--line-1);
  text-decoration: none;
  transition: transform var(--t-med), border-color var(--t-med), background var(--t-med);
}

.page-home .ph-news__link:hover,
.page-home .ph-news__link:focus-visible {
  transform: translateY(-3px);
  border-color: var(--line-2);
  background: var(--c-ink-3);
}

.page-home .ph-news__title {
  margin: 0;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.45;
  color: var(--text-1);
}

.page-home .ph-news__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-2);
}

.page-home .ph-news__time {
  margin-top: auto;
  padding-top: 6px;
  font-size: 12px;
  color: var(--text-3);
}

.page-home .ph-news__more {
  margin-top: 26px;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-home .ph-lines__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .ph-news__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .ph-news__item:first-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-home .ph-opening {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: center;
  }

  .page-home .ph-anchors__row {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-home .ph-dual__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .ph-gauge {
    height: 100%;
  }

  .page-home .ph-gauge__body {
    flex: 1;
  }

  .page-home .ph-eco__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }

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

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

  .page-home .ph-news__item:first-child {
    grid-column: auto;
  }
}

@media (min-width: 1120px) {
  .page-home .ph-lines__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .ph-line,
  .page-home .ph-news__link {
    transition: none;
  }

  .page-home .ph-line:hover,
  .page-home .ph-line:focus-within,
  .page-home .ph-news__link:hover {
    transform: none;
  }
}
<<<END>>>