.page-home {
  --ph-space: clamp(56px, 9vw, 116px);
  --ph-line: 1px solid rgba(201, 212, 226, 0.18);
  --ph-line-soft: 1px solid rgba(201, 212, 226, 0.10);
  --ph-teal-line: 1px solid rgba(53, 208, 192, 0.45);
  position: relative;
  overflow-x: hidden;
  color: var(--c-paper);
  font-family: var(--font-body);
  background:
    radial-gradient(140% 70% at 86% -8%, rgba(53, 208, 192, 0.13), transparent 62%),
    radial-gradient(90% 55% at 0% 100%, rgba(232, 163, 61, 0.07), transparent 62%),
    var(--c-space);
}

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

.page-home h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.62rem, 3.7vw, 2.42rem);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--c-paper);
}

.page-home h3 {
  margin: 0;
  font-size: 1.08rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--c-paper);
}

.page-home p {
  margin: 0;
}

.page-home figure {
  margin: 0;
}

.page-home figure img,
.page-home .closer__bg {
  display: block;
  max-width: 100%;
}

.page-home a {
  color: var(--c-teal);
}

/* ---------- 首屏 ---------- */
.page-home .hero {
  position: relative;
  padding: clamp(44px, 8vw, 92px) 0 clamp(36px, 6vw, 68px);
  border-bottom: var(--ph-line);
}

.page-home .hero__inner {
  display: grid;
  gap: clamp(30px, 5vw, 54px);
  align-items: center;
}

.page-home .hero__text {
  min-width: 0;
}

.page-home .hero .eyebrow {
  margin-bottom: 18px;
  color: var(--c-mist);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.72rem;
}

.page-home .hero__title {
  margin: 0 0 clamp(18px, 3vw, 26px);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.4rem, 8.6vw, 6.2rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--c-paper);
}

.page-home .hero__title-accent {
  display: block;
  color: var(--c-teal);
  text-shadow: 0 0 32px rgba(53, 208, 192, 0.28);
}

.page-home .hero__lede {
  max-width: 46ch;
  font-size: clamp(0.98rem, 1.8vw, 1.06rem);
  line-height: 1.85;
  color: var(--c-mist);
}

.page-home .hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: clamp(24px, 4vw, 34px);
}

.page-home .hero__cta {
  padding: 13px 26px;
  font-size: 0.92rem;
  letter-spacing: 0.04em;
}

.page-home .hero__version {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.page-home .hero__figure {
  position: relative;
  min-width: 0;
}

.page-home .hero__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    180deg,
    rgba(127, 243, 228, 0.10) 0px,
    rgba(127, 243, 228, 0.10) 1px,
    transparent 1px,
    transparent 5px
  );
  mix-blend-mode: screen;
}

.page-home .hero__figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border: var(--ph-line);
  filter: saturate(1.05) contrast(1.04);
}

/* ---------- 通用章节头 ---------- */
.page-home .section-head {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-home .section-head__num {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  letter-spacing: 0.22em;
  color: var(--c-teal);
  line-height: 1;
}

.page-home .section-head__note {
  max-width: 62ch;
  font-size: 0.96rem;
  line-height: 1.82;
  color: var(--c-mist);
}

/* ---------- 目录 ---------- */
.page-home .directory {
  padding: var(--ph-space) 0;
  border-bottom: var(--ph-line);
}

.page-home .dir-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--ph-line);
}

.page-home .dir-item {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  gap: 6px 16px;
  align-items: start;
  padding: 22px 0;
  border-bottom: var(--ph-line);
  transition: border-color 0.14s var(--ease);
}

.page-home .dir-item:hover,
.page-home .dir-item:focus-within {
  border-bottom-color: rgba(53, 208, 192, 0.55);
}

.page-home .dir-item__num {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--c-amber);
  padding-top: 6px;
}

.page-home .dir-item__body {
  min-width: 0;
}

.page-home .dir-item__body h3 {
  margin-bottom: 6px;
}

.page-home .dir-item__body p {
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--c-mist);
}

.page-home .dir-item__link {
  grid-column: 2;
  justify-self: start;
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-decoration: none;
  color: var(--c-teal);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color 0.18s var(--ease);
}

.page-home .dir-item__link:hover,
.page-home .dir-item__link:focus-visible {
  border-bottom-color: var(--c-teal);
}

/* ---------- 双栏 ---------- */
.page-home .duo {
  padding: var(--ph-space) 0;
  border-bottom: var(--ph-line);
}

.page-home .duo__grid {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  align-items: start;
}

.page-home .duo__col {
  min-width: 0;
}

.page-home .duo__figure {
  margin-bottom: 20px;
  position: relative;
}

.page-home .duo__figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border: var(--ph-line);
}

.page-home .duo__caption {
  display: block;
  margin-top: 9px;
  font-size: 0.7rem;
  letter-spacing: 0.13em;
  color: var(--c-mist);
}

.page-home .duo__card {
  padding: clamp(22px, 3.4vw, 32px);
  border-left: 2px solid var(--c-teal);
}

.page-home .duo__card--alt {
  border-left-color: var(--c-amber);
}

.page-home .duo__kicker {
  margin-bottom: 10px;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--c-teal);
}

.page-home .duo__card--alt .duo__kicker {
  color: var(--c-amber);
}

.page-home .duo__desc {
  margin: 10px 0 16px;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--c-paper);
  opacity: 0.86;
}

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

.page-home .duo__facts li {
  position: relative;
  padding-left: 18px;
  font-size: 0.92rem;
  line-height: 1.78;
  color: var(--c-mist);
}

.page-home .duo__facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 1px;
  background: var(--c-teal);
}

.page-home .duo__more {
  display: inline-block;
  margin-top: 20px;
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-decoration: none;
  color: var(--c-amber);
  border-bottom: 1px solid transparent;
  transition: border-color 0.18s var(--ease);
}

.page-home .duo__more:hover,
.page-home .duo__more:focus-visible {
  border-bottom-color: var(--c-amber);
}

/* ---------- 设备视图切换 ---------- */
.page-home .viewer {
  padding: var(--ph-space) 0;
  border-bottom: var(--ph-line);
}

.page-home .viewer__banner {
  margin-bottom: clamp(22px, 3.6vw, 34px);
}

.page-home .viewer__banner img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border: var(--ph-line);
  filter: saturate(0.9);
}

.page-home .viewer__switch {
  min-width: 0;
}

.page-home .viewer__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(20px, 3vw, 28px);
}

.page-home .viewer__tab {
  padding: 10px 16px;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--c-mist);
  border: var(--ph-line);
  background: transparent;
  cursor: pointer;
  transition: color 0.14s var(--ease), border-color 0.14s var(--ease), background-color 0.14s var(--ease);
}

.page-home .viewer__tab:hover {
  color: var(--c-elec);
  border-color: rgba(127, 243, 228, 0.5);
}

.page-home #view-desktop:checked ~ .viewer__tabs label[for="view-desktop"],
.page-home #view-land:checked ~ .viewer__tabs label[for="view-land"],
.page-home #view-port:checked ~ .viewer__tabs label[for="view-port"] {
  color: var(--c-ink);
  background: var(--c-teal);
  border-color: var(--c-teal);
}

.page-home .viewer__radio:focus-visible ~ .viewer__tabs label {
  outline: 1px dashed rgba(127, 243, 228, 0.7);
  outline-offset: 3px;
}

.page-home .viewer__panels {
  border-top: var(--ph-line);
  padding-top: clamp(20px, 3vw, 28px);
}

.page-home .viewer__panel {
  display: none;
  animation: ph-fade 0.22s var(--ease) both;
}

.page-home #view-desktop:checked ~ .viewer__panels .viewer__panel--desktop,
.page-home #view-land:checked ~ .viewer__panels .viewer__panel--land,
.page-home #view-port:checked ~ .viewer__panels .viewer__panel--port {
  display: block;
}

@keyframes ph-fade {
  from { opacity: 0; transform: translateX(-10px); }
  to   { opacity: 1; transform: translateX(0); }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .viewer__panel {
    animation: none;
  }
}

.page-home .viewer__panel h3 {
  margin-bottom: 14px;
}

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

.page-home .viewer__facts li {
  position: relative;
  padding-left: 20px;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--c-mist);
}

.page-home .viewer__facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 10px;
  height: 1px;
  background: var(--c-amber);
}

.page-home .viewer__link {
  display: inline-block;
  margin-top: 18px;
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-decoration: none;
  color: var(--c-teal);
  border-bottom: 1px solid transparent;
  transition: border-color 0.18s var(--ease);
}

.page-home .viewer__link:hover,
.page-home .viewer__link:focus-visible {
  border-bottom-color: var(--c-teal);
}

/* ---------- 时间轴 ---------- */
.page-home .timeline {
  padding: var(--ph-space) 0;
  border-bottom: var(--ph-line);
}

.page-home .timeline__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-home .timeline__item {
  position: relative;
  padding: 0 0 26px 26px;
  border-left: var(--ph-line);
}

.page-home .timeline__item::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 5px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-teal);
  box-shadow: 0 0 0 3px rgba(11, 27, 51, 1);
}

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

.page-home .timeline__year {
  margin-bottom: 6px;
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  color: var(--c-amber);
}

.page-home .timeline__item h3 {
  margin-bottom: 6px;
}

.page-home .timeline__item p {
  font-size: 0.93rem;
  line-height: 1.78;
  color: var(--c-mist);
}

.page-home .timeline__foot {
  margin-top: clamp(24px, 4vw, 34px);
}

.page-home .timeline__foot a {
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-decoration: none;
  color: var(--c-teal);
  border-bottom: 1px solid transparent;
  transition: border-color 0.18s var(--ease);
}

.page-home .timeline__foot a:hover,
.page-home .timeline__foot a:focus-visible {
  border-bottom-color: var(--c-teal);
}

/* ---------- 三步路径 ---------- */
.page-home .steps {
  padding: var(--ph-space) 0;
  border-bottom: var(--ph-line);
}

.page-home .steps__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(20px, 3.4vw, 32px);
}

.page-home .step {
  min-width: 0;
  padding-top: 16px;
  border-top: 2px solid var(--c-teal);
}

.page-home .step:nth-child(2) {
  border-top-color: var(--c-elec);
}

.page-home .step:nth-child(3) {
  border-top-color: var(--c-amber);
}

.page-home .step__num {
  margin-bottom: 10px;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--c-mist);
}

.page-home .step h3 {
  margin-bottom: 8px;
}

.page-home .step p {
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--c-mist);
}

.page-home .step__link {
  display: inline-block;
  margin-top: 14px;
  font-size: 0.73rem;
  letter-spacing: 0.14em;
  text-decoration: none;
  color: var(--c-paper);
  border-bottom: 1px solid rgba(201, 212, 226, 0.45);
  padding-bottom: 2px;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-home .step__link:hover,
.page-home .step__link:focus-visible {
  color: var(--c-teal);
  border-bottom-color: var(--c-teal);
}

/* ---------- 收口 ---------- */
.page-home .closer {
  position: relative;
  overflow: hidden;
  padding: clamp(52px, 8vw, 96px) 0;
  background: var(--c-ink);
}

.page-home .closer__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.26;
  filter: saturate(0.85) contrast(1.05);
}

.page-home .closer::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 16, 31, 0.55), rgba(6, 16, 31, 0.88));
  pointer-events: none;
}

.page-home .closer__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  align-items: center;
}

.page-home .closer__text p {
  margin-top: 14px;
  max-width: 52ch;
  font-size: 0.96rem;
  line-height: 1.85;
  color: var(--c-mist);
}

.page-home .closer__card {
  min-width: 0;
  padding: clamp(20px, 3vw, 28px);
  border: var(--ph-teal-line);
  background: rgba(18, 41, 74, 0.82);
}

.page-home .closer__label {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--c-mist);
}

.page-home .closer__mail {
  margin: 10px 0 8px;
  font-size: clamp(0.82rem, 2vw, 1rem);
  letter-spacing: 0.04em;
  color: var(--c-amber);
  word-break: break-all;
}

.page-home .closer__hours {
  margin-bottom: 18px;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--c-mist);
  line-height: 1.9;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-home .steps__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-home .duo__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(30px, 4vw, 56px);
  }

  .page-home .duo__col--b {
    margin-top: 48px;
  }

  .page-home .timeline__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(16px, 2.4vw, 30px);
    border-top: var(--ph-line);
    padding-top: 30px;
  }

  .page-home .timeline__item {
    padding: 0;
    border-left: 0;
  }

  .page-home .timeline__item::before {
    left: 0;
    top: -34px;
  }

  .page-home .closer__inner {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  }
}

@media (min-width: 1024px) {
  .page-home .hero__inner {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: clamp(32px, 4vw, 64px);
  }

  .page-home .hero__figure {
    clip-path: polygon(10% 0, 100% 0, 100% 100%, 0 100%);
    margin-right: calc(var(--gutter) * -0.4);
  }

  .page-home .dir-item {
    grid-template-columns: 3.4rem minmax(0, 1fr) auto;
    align-items: center;
    padding: 24px 0;
  }

  .page-home .dir-item__link {
    grid-column: 3;
    justify-self: end;
  }

  .page-home .viewer__tabs {
    gap: 10px;
  }

  .page-home .viewer__tab {
    padding: 11px 22px;
  }
}
<<<END>>>