.page-home {
  --ph-card: #FCF9F2;
  --ph-cut: 18px;
  background: var(--paper);
  color: var(--text);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-home *,
.page-home *::before,
.page-home *::after {
  box-sizing: border-box;
}

.page-home .ph-wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- 面包屑 ---------- */
.page-home .ph-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding-top: clamp(16px, 3vw, 28px);
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--muted);
}

.page-home .ph-crumb .t-idx {
  color: var(--copper);
}

/* ---------- 首屏 ---------- */
.page-home .ph-hero {
  padding-bottom: clamp(36px, 6vw, 72px);
}

.page-home .ph-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 34px);
  margin-top: clamp(18px, 3vw, 32px);
}

.page-home .ph-hero__main {
  min-width: 0;
}

.page-home .ph-kicker {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: .14em;
  color: var(--bamboo);
}

.page-home .ph-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(29px, 6.2vw, 56px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-home .ph-search {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
  padding: 15px 16px;
  background: var(--ph-card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--bamboo);
  border-radius: var(--radius);
}

.page-home .ph-search__icon {
  position: relative;
  flex: none;
  width: 15px;
  height: 15px;
  border: 2px solid var(--muted);
  border-radius: 50%;
}

.page-home .ph-search__icon::after {
  content: "";
  position: absolute;
  right: -6px;
  bottom: -3px;
  width: 8px;
  height: 2px;
  background: var(--muted);
  transform: rotate(45deg);
}

.page-home .ph-search__ph {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 15px;
  line-height: 1.4;
  color: var(--muted);
}

.page-home .ph-search__key {
  flex: none;
  padding: 2px 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-2);
  font-size: 12px;
  color: var(--muted);
}

.page-home .ph-match__lead {
  margin: 18px 0 0;
}

.page-home .ph-match {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-home .ph-match__item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}

.page-home .ph-match__name {
  flex: 1 1 170px;
  min-width: 0;
  color: var(--text);
}

.page-home .ph-match__code {
  font-size: 12.5px;
  color: var(--muted);
}

.page-home .ph-hl {
  background: var(--bamboo-bright);
  color: var(--ink);
  padding: 0 2px;
  border-radius: 1px;
}

.page-home .ph-hero__note {
  margin: 16px 0 0;
  max-width: 46ch;
}

/* ---------- 下载卡片 ---------- */
.page-home .ph-hero__card {
  min-width: 0;
}

.page-home .ph-dl {
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--ph-card);
  border-top: 4px solid var(--copper);
  clip-path: polygon(0 0, calc(100% - var(--ph-cut)) 0, 100% var(--ph-cut), 100% 100%, var(--ph-cut) 100%, 0 calc(100% - var(--ph-cut)));
}

.page-home .ph-dl__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.page-home .ph-dl__top .t-idx {
  color: var(--ink-2);
}

.page-home .ph-dl__badge {
  padding: 2px 10px;
  border: 1px solid var(--bamboo);
  border-radius: 999px;
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--bamboo);
}

.page-home .ph-dl__num {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 16px 0 0;
}

.page-home .ph-dl__num .t-mono {
  font-size: clamp(42px, 7.5vw, 64px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--ink-2);
}

.page-home .ph-dl__unit {
  font-size: 13.5px;
  color: var(--muted);
}

.page-home .ph-dl__title {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.6;
  letter-spacing: .01em;
  color: var(--muted);
}

.page-home .ph-dl__shot {
  position: relative;
  margin: 16px 0 0;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--paper-2);
}

.page-home .ph-dl__shot img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 900 / 620;
  object-fit: cover;
}

.page-home .ph-dl__label {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 5px 10px;
  background: rgba(12, 36, 30, .82);
  color: var(--on-ink);
  font-size: 12px;
  letter-spacing: .06em;
}

.page-home .ph-dl__meta {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
}

.page-home .ph-dl__meta li {
  display: flex;
  gap: 9px;
  align-items: flex-start;
}

.page-home .ph-dl__meta li::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  margin-top: 7px;
  background: var(--copper);
}

.page-home .ph-dl__cta {
  display: flex;
  justify-content: center;
  width: 100%;
  margin-top: 20px;
}

/* ---------- 正文骨架 ---------- */
.page-home .ph-body {
  padding-top: clamp(40px, 7vw, 84px);
}

.page-home .ph-body__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
}

.page-home .ph-sections {
  min-width: 0;
}

.page-home .ph-sections > .ph-sec:first-child {
  padding-top: 0;
}

.page-home .ph-rail {
  display: none;
}

.page-home .ph-rail__title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--copper);
}

.page-home .ph-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
}

.page-home .ph-rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-left: -15px;
  padding: 7px 0 7px 13px;
  border-left: 2px solid transparent;
  font-size: 14px;
  line-height: 1.4;
  color: var(--muted);
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-home .ph-rail__link .t-mono {
  font-size: 12px;
  color: var(--copper);
}

.page-home .ph-rail__link:hover,
.page-home .ph-rail__link:focus-visible {
  color: var(--text);
  border-left-color: var(--bamboo);
}

.page-home .ph-rail__link[aria-current="true"],
.page-home .ph-rail__link[aria-current="page"] {
  color: var(--text);
  font-weight: 700;
  border-left-color: var(--copper);
}

/* ---------- 章节通用 ---------- */
.page-home .ph-sec {
  padding-top: clamp(46px, 7vw, 84px);
  scroll-margin-top: calc(var(--header-h-compact) + 22px);
}

.page-home .ph-sec__head {
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-home .ph-sec__num {
  display: inline-block;
  position: relative;
  padding-bottom: 9px;
  font-size: clamp(30px, 5.4vw, 44px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.05em;
  color: var(--bamboo);
}

.page-home .ph-sec__num::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 46px;
  height: 3px;
  background: var(--copper);
}

.page-home .ph-sec__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 33px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-home .ph-sec__desc {
  margin: 12px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 01 服务方向 ---------- */
.page-home .ph-svc {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-home .ph-svc__item {
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--paper);
  transition: background var(--dur) var(--ease);
}

.page-home .ph-svc__item:hover {
  background: var(--paper-2);
}

.page-home .ph-svc__name {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  color: var(--ink-2);
}

.page-home .ph-svc__name::before {
  content: "";
  flex: none;
  width: 10px;
  height: 10px;
  background: var(--copper);
  clip-path: polygon(0 0, 100% 0, 100% 68%, 68% 100%, 0 100%);
}

.page-home .ph-svc__body {
  margin: 10px 0 0;
  font-size: 15.5px;
  line-height: 1.72;
  color: var(--muted);
}

.page-home .ph-svc__fit {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 8px;
  margin: 12px 0 0;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--ink-2);
}

.page-home .ph-svc__fit .tag {
  flex: none;
}

/* ---------- 02 归档规模 ---------- */
.page-home .ph-archive__band {
  margin: 0 0 clamp(18px, 2.6vw, 28px);
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--ink-2);
}

.page-home .ph-archive__band img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 1600 / 560;
  object-fit: cover;
}

.page-home .ph-facts {
  list-style: none;
  margin: 0 0 clamp(18px, 2.6vw, 28px);
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-home .ph-facts li {
  padding: 15px 16px;
  background: var(--paper-2);
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--muted);
}

.page-home .ph-facts li .t-mono {
  display: block;
  margin-bottom: 4px;
  font-size: clamp(21px, 3vw, 29px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--ink-2);
}

.page-home .ph-cat {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(12px, 1.8vw, 18px);
}

.page-home .ph-cat__item {
  padding: 18px 20px;
  background: var(--ph-card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--bamboo);
  border-radius: var(--radius);
}

.page-home .ph-cat__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--ink-2);
}

.page-home .ph-cat__body {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

.page-home .ph-cat__fmt {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--gold);
}

/* ---------- 03 版本沿革 ---------- */
.page-home .ph-ver__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 38px);
  align-items: start;
}

.page-home .ph-ver__fig {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--paper-2);
}

.page-home .ph-ver__fig img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 1200 / 800;
  object-fit: cover;
}

.page-home .ph-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 22px;
  position: relative;
}

.page-home .ph-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--gold);
  opacity: .5;
}

.page-home .ph-timeline__item {
  position: relative;
  padding-bottom: clamp(18px, 2.8vw, 28px);
}

.page-home .ph-timeline__item:last-child {
  padding-bottom: 0;
}

.page-home .ph-timeline__dot {
  position: absolute;
  left: -22px;
  top: 4px;
  width: 12px;
  height: 12px;
  border: 2px solid var(--gold);
  border-radius: 50%;
  background: var(--paper);
  transition: border-width var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-home .ph-timeline__item:hover .ph-timeline__dot {
  border-width: 3px;
  transform: scale(1.08);
}

.page-home .ph-timeline__year {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--gold);
}

.page-home .ph-timeline__name {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  color: var(--ink-2);
}

.page-home .ph-timeline__body {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
}

.page-home .ph-ver__note {
  margin: 18px 0 0;
}

.page-home .ph-ver__more {
  margin: clamp(14px, 2.4vw, 22px) 0 0;
  font-size: 15px;
}

/* ---------- 04 四步路径 ---------- */
.page-home .ph-step {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-home .ph-step__item {
  position: relative;
  padding: clamp(18px, 2.2vw, 24px);
  background: var(--paper);
}

.page-home .ph-step__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  margin-bottom: 12px;
  border-radius: 50%;
  background: var(--bamboo);
  color: #FFFFFF;
  font-size: 15px;
  font-weight: 700;
}

.page-home .ph-step__item:nth-child(4) .ph-step__no {
  background: transparent;
  border: 2px solid var(--gold);
  color: var(--gold);
}

.page-home .ph-step__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--ink-2);
}

.page-home .ph-step__body {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

.page-home .ph-step__out {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .02em;
  line-height: 1.5;
  color: var(--bamboo);
}

.page-home .ph-path__fig {
  margin: clamp(20px, 3vw, 30px) 0 0;
  max-width: 720px;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--paper-2);
}

.page-home .ph-path__fig img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 1000 / 750;
  object-fit: cover;
}

.page-home .ph-path__more {
  margin: 16px 0 0;
}

/* ---------- 05 响应节奏 ---------- */
.page-home .ph-resp {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 34px);
  align-items: start;
}

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

.page-home .ph-resp__row {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-home .ph-resp__row:first-child {
  border-top: 1px solid var(--line);
}

.page-home .ph-resp__row dt {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--ink-2);
}

.page-home .ph-resp__row dd {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.72;
  color: var(--muted);
}

.page-home .ph-resp__side {
  padding: clamp(20px, 2.6vw, 28px);
  background: var(--ink);
  color: var(--on-ink);
  border-radius: var(--radius);
}

.page-home .ph-resp__side-label {
  margin: 0;
  color: var(--bamboo-bright);
  font-size: 12px;
  letter-spacing: .16em;
}

.page-home .ph-resp__side-title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.4;
  color: var(--on-ink);
}

.page-home .ph-resp__side-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--on-ink-soft);
}

.page-home .ph-resp__side-list li {
  padding-left: 14px;
  border-left: 2px solid var(--ink-line);
}

.page-home .ph-resp__side-list strong {
  display: block;
  color: var(--bamboo-bright);
  font-weight: 700;
}

.page-home .ph-resp__side-note {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--ink-line);
  font-size: 14px;
  line-height: 1.72;
  color: var(--on-ink-soft);
}

/* ---------- 06 联系 ---------- */
.page-home .ph-slash {
  height: 10px;
  margin-bottom: clamp(24px, 4vw, 40px);
  background-image: repeating-linear-gradient(135deg, var(--copper) 0 2px, transparent 2px 10px);
  opacity: .55;
}

.page-home .ph-contact {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 36px);
  align-items: start;
}

.page-home .ph-contact__cta {
  margin-top: clamp(16px, 2.4vw, 24px);
}

.page-home .ph-contact__card {
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--ph-card);
  border: 1px solid var(--line);
  border-top: 4px solid var(--bamboo);
  border-radius: var(--radius);
}

.page-home .ph-contact__label {
  margin: 0 0 14px;
  color: var(--copper);
  font-size: 12px;
  letter-spacing: .16em;
}

.page-home .ph-contact__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-home .ph-contact__list li {
  display: grid;
  gap: 3px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

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

.page-home .ph-contact__key {
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--muted);
}

.page-home .ph-contact__val {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  word-break: break-word;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-home .ph-resp__row {
    grid-template-columns: 132px 1fr;
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 720px) {
  .page-home .ph-svc {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-home .ph-svc__item:last-child {
    grid-column: span 2;
  }

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

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

@media (min-width: 760px) {
  .page-home .ph-facts {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 880px) {
  .page-home .ph-ver__grid {
    grid-template-columns: 5fr 7fr;
    gap: clamp(26px, 4vw, 48px);
  }

  .page-home .ph-resp {
    grid-template-columns: 7fr 5fr;
  }

  .page-home .ph-contact {
    grid-template-columns: 7fr 5fr;
  }
}

@media (min-width: 920px) {
  .page-home .ph-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: clamp(28px, 4vw, 54px);
  }
}

@media (min-width: 1000px) {
  .page-home .ph-body__grid {
    grid-template-columns: minmax(170px, 196px) 1fr;
    gap: clamp(32px, 5vw, 68px);
  }

  .page-home .ph-rail {
    display: block;
    position: sticky;
    top: calc(var(--header-h-compact) + 24px);
    padding-left: 15px;
    border-left: 1px solid var(--line);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .ph-dl,
  .page-home .ph-svc__item,
  .page-home .ph-timeline__dot,
  .page-home .ph-rail__link {
    transition: none;
  }

  .page-home .ph-timeline__item:hover .ph-timeline__dot {
    transform: none;
  }
}
<<<END>>>