.page-home {
  --ph-line: 2px solid var(--line);
  --ph-gap: clamp(16px, 2vw, 28px);
  --ph-section-gap: clamp(44px, 5.4vw, 88px);

  background: var(--ink);
  color: var(--silver);
  font-family: var(--font-body);
  overflow-x: clip;
}

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

/* ---------------- 首屏 ---------------- */

.page-home .home-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(36px, 5.5vw, 78px) 0 clamp(48px, 7vw, 108px);
  border-bottom: var(--ph-line);
}

.page-home .home-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(90deg, rgba(42, 54, 72, .5) 1px, transparent 1px),
    linear-gradient(rgba(42, 54, 72, .5) 1px, transparent 1px);
  background-size: 96px 96px;
  -webkit-mask-image: radial-gradient(120% 95% at 82% 4%, #000 0%, transparent 70%);
  mask-image: radial-gradient(120% 95% at 82% 4%, #000 0%, transparent 70%);
  opacity: .75;
  pointer-events: none;
}

.page-home .home-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4vw, 56px);
  align-items: start;
}

@media (min-width: 980px) {
  .page-home .home-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(280px, .85fr);
    gap: clamp(40px, 5vw, 80px);
  }
}

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

.page-home .home-hero__title {
  display: flex;
  flex-direction: column;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  line-height: 1;
  color: var(--white);
}

.page-home .home-hero__brand {
  display: block;
  margin-bottom: clamp(10px, 1.6vw, 22px);
  font-size: clamp(20px, 2.5vw, 33px);
  font-weight: 400;
  letter-spacing: .2em;
  color: var(--silver);
}

.page-home .home-hero__ver {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(58px, 13.5vw, 178px);
  font-weight: 300;
  line-height: .88;
  letter-spacing: -.035em;
  color: var(--white);
}

.page-home .home-hero__ver em {
  font-style: normal;
  color: var(--accent);
}

.page-home .home-hero__sub {
  margin: clamp(14px, 1.8vw, 22px) 0 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.2vw, 28px);
  font-weight: 400;
  letter-spacing: .07em;
  color: var(--accent-soft);
}

.page-home .home-hero__text {
  max-width: 46ch;
  margin: clamp(16px, 2vw, 26px) 0 0;
  font-size: clamp(15px, 1.1vw, 17px);
  line-height: 1.8;
  color: var(--silver);
}

.page-home .home-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: clamp(22px, 2.8vw, 34px);
}

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

.page-home .home-hero__visual {
  position: relative;
  overflow: hidden;
  border: var(--ph-line);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
}

.page-home .home-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.page-home .home-hero__stamp {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 8px 16px;
  background: var(--accent);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
}

.page-home .home-hero__statuses {
  display: grid;
  gap: 10px;
  margin: clamp(16px, 2.2vw, 26px) 0 0;
  padding: 0;
  list-style: none;
}

.page-home .status {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  background: var(--ink-2);
  font-size: 14px;
}

.page-home .status__text {
  color: var(--silver);
  letter-spacing: .02em;
}

/* ---------------- 正文骨架 ---------------- */

.page-home .home-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 3.4vw, 48px);
  align-items: start;
  padding-top: clamp(46px, 6vw, 92px);
  padding-bottom: clamp(56px, 7vw, 116px);
}

@media (min-width: 1040px) {
  .page-home .home-body {
    grid-template-columns: 186px minmax(0, 1fr);
    gap: clamp(44px, 5vw, 88px);
  }
}

.page-home .section-index {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 4px;
  border-bottom: var(--ph-line);
}

.page-home .section-index::-webkit-scrollbar {
  display: none;
}

@media (min-width: 1040px) {
  .page-home .section-index {
    position: sticky;
    top: 104px;
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
    border-bottom: 0;
  }
}

.page-home .section-index__link {
  flex: none;
  display: block;
  padding: 9px 12px;
  border-bottom: 2px solid transparent;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  line-height: 1.5;
  color: var(--silver);
  text-decoration: none;
  white-space: nowrap;
  transition: color .22s var(--ease), border-color .22s var(--ease);
}

.page-home .section-index__link:hover,
.page-home .section-index__link:focus-visible {
  color: var(--white);
}

.page-home .section-index__link.is-active,
.page-home .section-index__link[aria-current] {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

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

/* ---------------- 章节 ---------------- */

.page-home .chapter {
  padding-top: var(--ph-section-gap);
  border-top: var(--ph-line);
  scroll-margin-top: 118px;
}

.page-home .home-body__main > .chapter:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-home .chapter__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  margin-bottom: clamp(24px, 3vw, 42px);
}

@media (min-width: 780px) {
  .page-home .chapter__head {
    grid-template-columns: 76px minmax(0, 1fr);
    column-gap: clamp(16px, 2.2vw, 30px);
    row-gap: 10px;
    align-items: start;
  }

  .page-home .chapter__no {
    grid-row: 1 / 3;
    padding-top: 8px;
  }
}

.page-home .chapter__no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--accent);
}

.page-home .chapter__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(27px, 3.8vw, 46px);
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: .01em;
  color: var(--white);
}

.page-home .chapter__note {
  max-width: 54ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--silver);
}

.page-home .chapter__more {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 28px;
  margin-top: clamp(24px, 3vw, 38px);
}

.page-home .textlink {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 3px;
  border-bottom: 1px solid rgba(255, 138, 76, .45);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--accent-soft);
  text-decoration: none;
  transition: color .22s var(--ease), border-color .22s var(--ease);
}

.page-home .textlink::after {
  content: "→";
}

.page-home .textlink:hover,
.page-home .textlink:focus-visible {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---------------- 图与说明牌 ---------------- */

.page-home .banner {
  margin: 0 0 clamp(24px, 3vw, 38px);
  border: var(--ph-line);
  background: var(--panel);
}

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

.page-home .media__caption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--silver);
}

/* ---------------- 六类板块档案卡 ---------------- */

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

.page-home .archive__item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  grid-template-areas:
    "no name"
    "no desc"
    "scene scene";
  column-gap: 16px;
  padding: clamp(16px, 2vw, 22px) clamp(16px, 2vw, 24px);
  border: var(--ph-line);
  background: var(--panel);
  transition: transform .28s var(--ease), border-color .28s var(--ease), box-shadow .28s var(--ease);
}

.page-home .archive__item:hover,
.page-home .archive__item:focus-within {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: var(--shadow-hard);
}

.page-home .archive__no {
  grid-area: no;
  font-family: var(--font-mono);
  font-size: clamp(24px, 2.6vw, 34px);
  font-weight: 500;
  line-height: 1;
  color: var(--accent);
}

.page-home .archive__name {
  grid-area: name;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.1vw, 25px);
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--white);
}

.page-home .archive__desc {
  grid-area: desc;
  margin: 6px 0 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--silver);
}

.page-home .archive__scene {
  grid-area: scene;
  margin-top: 12px;
  padding-left: 10px;
  border-left: 2px solid rgba(245, 199, 126, .45);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  line-height: 1.7;
  color: var(--amber);
}

@media (min-width: 880px) {
  .page-home .archive__item {
    grid-template-columns: 70px minmax(0, 1fr) 244px;
    grid-template-areas:
      "no name scene"
      "no desc scene";
    column-gap: 28px;
  }

  .page-home .archive__item:nth-child(even) {
    margin-left: clamp(0px, 4vw, 52px);
  }

  .page-home .archive__item:nth-child(odd) {
    margin-right: clamp(0px, 4vw, 52px);
  }

  .page-home .archive__scene {
    margin-top: 0;
    align-self: center;
  }
}

/* ---------------- 两步进入 ---------------- */

.page-home .walkthrough {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3vw, 42px);
  align-items: start;
}

@media (min-width: 900px) {
  .page-home .walkthrough {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  }
}

.page-home .walkthrough__figure {
  margin: 0;
  overflow: hidden;
  border: var(--ph-line);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
}

.page-home .walkthrough__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-home .steps {
  display: grid;
  gap: clamp(16px, 2.2vw, 26px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .step {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 14px;
  padding-top: 16px;
  border-top: var(--ph-line);
}

.page-home .step__no {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.2vw, 38px);
  font-weight: 500;
  line-height: 1;
  color: var(--accent);
}

.page-home .step__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 23px);
  font-weight: 500;
  letter-spacing: .03em;
  color: var(--white);
}

.page-home .step__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--silver);
}

/* ---------------- 文档与记录 ---------------- */

.page-home .vault {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3vw, 42px);
  align-items: center;
}

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

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

.page-home .vault__list li {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  font-size: 15px;
  line-height: 1.75;
  color: var(--silver);
}

.page-home .vault__list li::before {
  content: "";
  width: 10px;
  height: 10px;
  margin-top: 8px;
  background: var(--accent);
  box-shadow: 2px 2px 0 rgba(0, 0, 0, .5);
}

.page-home .formats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-home .formats li {
  padding: 7px 14px;
  border: 2px solid rgba(245, 199, 126, .45);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--amber);
}

.page-home .vault__figure {
  margin: 0;
  overflow: hidden;
  border: var(--ph-line);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
}

.page-home .vault__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

/* ---------------- 版本切换 ---------------- */

.page-home .vswitch {
  position: relative;
  padding: clamp(20px, 2.6vw, 32px);
  border: var(--ph-line);
  background: var(--panel);
}

.page-home .vswitch__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
  pointer-events: none;
}

.page-home .vswitch__radio:focus-visible ~ .vswitch__tabs {
  outline: 2px solid var(--accent-soft);
  outline-offset: 6px;
}

.page-home .vswitch__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(18px, 2.4vw, 28px);
  padding-bottom: 14px;
  border-bottom: 2px solid var(--line);
}

.page-home .vswitch__tab {
  cursor: pointer;
  padding: 8px 18px;
  border: 2px solid var(--line);
  background: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--silver);
  transition: color .22s var(--ease), border-color .22s var(--ease), background-color .22s var(--ease);
}

.page-home .vswitch__tab:hover {
  color: var(--white);
  border-color: var(--accent-soft);
}

.page-home #vh1:checked ~ .vswitch__tabs .vswitch__tab[for="vh1"],
.page-home #vh2:checked ~ .vswitch__tabs .vswitch__tab[for="vh2"],
.page-home #vh3:checked ~ .vswitch__tabs .vswitch__tab[for="vh3"] {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--ink);
}

.page-home .vswitch__panel {
  display: none;
}

.page-home #vh1:checked ~ .vswitch__panels .vswitch__panel[data-panel="vh1"],
.page-home #vh2:checked ~ .vswitch__panels .vswitch__panel[data-panel="vh2"],
.page-home #vh3:checked ~ .vswitch__panels .vswitch__panel[data-panel="vh3"] {
  display: block;
}

.page-home .vpanel__tag {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--accent);
}

.page-home .vpanel__text {
  max-width: 56ch;
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--silver);
}

/* ---------------- 迭代节奏数字 ---------------- */

.page-home .rhythm {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(22px, 4vw, 56px);
  margin: clamp(26px, 3.4vw, 42px) 0 0;
  padding: 0;
  list-style: none;
}

.page-home .rhythm__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(28px, 3.4vw, 44px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--accent);
}

.page-home .rhythm__label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--silver);
}

/* ---------------- 咨询反馈 ---------------- */

.page-home .contactband {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 36px);
  padding: clamp(22px, 3vw, 40px);
  border: var(--ph-line);
  background: linear-gradient(142deg, var(--panel) 0%, var(--ink-2) 100%);
  box-shadow: var(--shadow-hard);
}

@media (min-width: 820px) {
  .page-home .contactband {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: center;
  }
}

.page-home .contactband__intro p {
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--silver);
}

.page-home .contactband__items {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .contactband__items li {
  padding-left: 14px;
  border-left: 2px solid var(--accent);
}

.page-home .contactband__key {
  display: block;
  margin-bottom: 5px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--accent-soft);
}

.page-home .contactband__val {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.5;
  color: var(--white);
  word-break: break-word;
}

/* ---------------- 响应式收尾 ---------------- */

@media (max-width: 560px) {
  .page-home .home-hero__actions .btn {
    width: 100%;
    justify-content: center;
    text-align: center;
  }

  .page-home .archive__item:nth-child(n) {
    margin-left: 0;
    margin-right: 0;
  }

  .page-home .step {
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 10px;
  }
}

@media (min-width: 1440px) {
  .page-home .home-hero__grid {
    gap: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .archive__item,
  .page-home .textlink,
  .page-home .section-index__link,
  .page-home .vswitch__tab {
    transition: none;
  }

  .page-home .archive__item:hover,
  .page-home .archive__item:focus-within {
    transform: none;
  }
}