/* ===== 首页专属样式 ===== */
.page-home {
  background-color: var(--ink);
  color: var(--warm-paper);
  font-family: var(--font-sans);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.page-home a {
  transition: color 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease), padding-left 0.25s var(--ease);
}

/* ---------- 通用区块 ---------- */
.page-home .home-section {
  padding: 72px 0;
  scroll-margin-top: calc(var(--header-h) + 16px);
}

.page-home .home-section__title {
  margin: 10px 0 22px;
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.6vw, 2.6rem);
  font-weight: 400;
  line-height: 1.2;
  color: var(--warm-paper);
  letter-spacing: 0.02em;
}

.page-home .home-section__title--dark {
  color: var(--ink);
}

.page-home .section-index--dark {
  color: var(--ink);
}

.page-home .home-upgrade .lead,
.page-home .home-download .lead {
  color: var(--gray);
}

/* ---------- 首屏海报 ---------- */
.page-home .home-hero {
  position: relative;
  background: var(--ink);
  padding: 56px 0 0;
  overflow: hidden;
}

.page-home .home-hero__bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 55%;
  z-index: 0;
  pointer-events: none;
}

.page-home .home-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.28;
}

.page-home .home-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 44px;
  padding-bottom: 72px;
}

.page-home .home-hero__brand {
  padding-top: 20px;
}

.page-home .home-hero__kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 20px;
  border-left: 2px solid var(--gold);
  padding-left: 12px;
}

.page-home .home-hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.75rem, 8vw, 5.5rem);
  font-weight: 300;
  line-height: 0.95;
  color: var(--warm-paper);
  margin: 0 0 16px;
  letter-spacing: 0.02em;
}

.page-home .home-hero__title-x {
  display: block;
  font-size: 0.32em;
  letter-spacing: 0.28em;
  color: var(--gold);
  margin-top: 12px;
  font-weight: 400;
}

.page-home .home-hero__slogan {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.28em;
  color: var(--silver);
}

.page-home .home-hero__index {
  border-top: 1px solid var(--gold-soft);
  padding-top: 24px;
}

.page-home .home-hero__index-cap {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--silver);
  margin-bottom: 18px;
}

.page-home .home-hero__index-item {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 14px 4px;
  border-bottom: 1px solid rgba(245, 230, 196, 0.12);
  text-decoration: none;
  color: var(--warm-paper);
  overflow: hidden;
}

.page-home .home-hero__index-item::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--gold-bright);
  transition: width 0.3s var(--ease);
}

.page-home .home-hero__index-item:hover {
  background: var(--gold-soft);
  color: var(--gold-bright);
  padding-left: 16px;
}

.page-home .home-hero__index-item:hover::after {
  width: 100%;
}

.page-home .home-hero__index-no {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold);
  min-width: 26px;
}

.page-home .home-hero__index-text {
  font-size: 17px;
  letter-spacing: 0.04em;
}

.page-home .home-hero__band {
  height: 10px;
  background: linear-gradient(102deg, var(--deep-red) 0%, var(--deep-red) 78%, var(--gold) 78%, var(--gold) 100%);
}

/* ---------- 01 内容中心 ---------- */
.page-home .home-content {
  background: var(--carbon);
}

.page-home .home-content__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: center;
}

.page-home .home-content__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--gold-soft);
  background: var(--ink);
}

.page-home .home-content__media::before {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  width: 64px;
  height: 3px;
  background: var(--gold);
}

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

.page-home .home-content__body {
  padding: 8px 0;
}

.page-home .home-content__list {
  list-style: none;
  padding: 0;
  margin: 24px 0 32px;
  display: grid;
  gap: 10px;
}

.page-home .home-content__list li {
  position: relative;
  padding-left: 22px;
  color: var(--paper-dim);
  font-size: 15px;
  line-height: 1.6;
}

.page-home .home-content__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 12px;
  height: 1px;
  background: var(--gold);
}

/* ---------- 02 升级版 ---------- */
.page-home .home-upgrade {
  background: var(--warm-paper);
  color: var(--ink);
}

.page-home .home-upgrade__head {
  max-width: 720px;
}

.page-home .home-upgrade__lead {
  font-size: 16px;
  line-height: 1.7;
}

.page-home .home-upgrade__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 36px;
}

.page-home .home-upgrade__card {
  position: relative;
  background: var(--light-paper);
  border: 1px solid rgba(212, 175, 55, 0.5);
  border-left: 4px solid var(--gold);
  padding: 28px 24px;
}

.page-home .home-upgrade__card::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gold);
  transition: width 0.3s var(--ease);
}

.page-home .home-upgrade__card:hover::after {
  width: 100%;
}

.page-home .home-upgrade__num {
  display: block;
  font-family: var(--font-serif);
  font-size: 2.875rem;
  line-height: 1;
  color: var(--gold);
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}

.page-home .home-upgrade__card-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.page-home .home-upgrade__card-text {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.65;
}

.page-home .home-upgrade__bottom {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 32px;
  align-items: end;
}

.page-home .home-upgrade__media {
  margin: 0;
  border: 1px solid rgba(12, 12, 12, 0.15);
  background: var(--warm-paper);
}

.page-home .home-upgrade__media img {
  display: block;
  width: 100%;
  height: auto;
}

.page-home .home-upgrade__action {
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: flex-start;
}

.page-home .home-upgrade__note {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gray);
}

/* ---------- 03 收藏iOS ---------- */
.page-home .home-ios {
  position: relative;
  background:
    linear-gradient(180deg, rgba(212, 175, 55, 0.06), transparent 60%),
    var(--carbon);
  overflow: hidden;
}

.page-home .home-ios__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 64px 0 72px;
}

.page-home .home-ios__badge {
  font-family: var(--font-serif);
  font-size: clamp(4.5rem, 14vw, 8rem);
  font-weight: 700;
  line-height: 0.9;
  color: var(--gold);
  opacity: 0.5;
  margin-bottom: 24px;
  text-shadow: 0 0 60px rgba(212, 175, 55, 0.3);
}

.page-home .home-ios__title {
  max-width: 640px;
}

.page-home .home-ios__desc {
  max-width: 640px;
  color: var(--paper-dim);
  font-size: 16px;
  line-height: 1.75;
  margin-bottom: 28px;
}

/* ---------- 04 资料下载 ---------- */
.page-home .home-download {
  background: var(--light-paper);
  color: var(--ink);
}

.page-home .home-download__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: center;
}

.page-home .home-download__body {
  padding: 8px 0;
}

.page-home .home-download__list {
  list-style: none;
  padding: 0;
  margin: 24px 0 32px;
  display: grid;
  gap: 10px;
}

.page-home .home-download__list li {
  position: relative;
  padding-left: 22px;
  color: var(--gray);
  font-size: 15px;
  line-height: 1.6;
}

.page-home .home-download__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 12px;
  height: 2px;
  background: var(--deep-red);
}

.page-home .home-download__media {
  position: relative;
  margin: 0;
  border: 1px solid rgba(12, 12, 12, 0.2);
  background: var(--warm-paper);
}

.page-home .home-download__media::before {
  content: "";
  position: absolute;
  bottom: -1px;
  left: -1px;
  width: 56px;
  height: 3px;
  background: var(--deep-red);
}

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

/* ---------- 05 反馈通道 ---------- */
.page-home .home-feedback {
  background:
    radial-gradient(circle at 92% 12%, rgba(212, 175, 55, 0.08), transparent 42%),
    var(--ink);
}

.page-home .home-feedback__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-home .home-feedback__info {
  max-width: 640px;
}

.page-home .home-feedback__channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--gold-soft);
  border: 1px solid var(--gold-soft);
}

.page-home .home-feedback__channel {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--carbon);
  padding: 18px 20px;
}

.page-home .home-feedback__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-home .home-feedback__value {
  font-size: 16px;
  color: var(--warm-paper);
  word-break: break-all;
  line-height: 1.5;
}

.page-home .home-feedback__action {
  grid-column: 1 / -1;
}

/* ---------- 按钮浅色变体 ---------- */
.page-home .btn--ghost-dark {
  border-color: var(--ink);
  color: var(--ink);
  background: transparent;
}

.page-home .btn--ghost-dark:hover {
  background: var(--ink);
  color: var(--warm-paper);
  border-color: var(--ink);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 768px) {
  .page-home .home-section {
    padding: 104px 0;
  }

  .page-home .home-hero {
    padding-top: 88px;
  }

  .page-home .home-hero__bg {
    width: 55%;
    height: 100%;
    opacity: 0.85;
  }

  .page-home .home-hero__inner {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 64px;
    align-items: start;
    min-height: 500px;
    padding-bottom: 100px;
  }

  .page-home .home-hero__brand {
    padding-top: 32px;
  }

  .page-home .home-hero__title {
    font-size: clamp(4rem, 7vw, 6rem);
  }

  .page-home .home-hero__title-x {
    font-size: 0.3em;
  }

  .page-home .home-content__grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 64px;
  }

  .page-home .home-upgrade__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 44px;
  }

  .page-home .home-upgrade__bottom {
    grid-template-columns: 1fr 320px;
    margin-top: 40px;
  }

  .page-home .home-upgrade__action {
    padding-bottom: 12px;
  }

  .page-home .home-ios__inner {
    padding: 96px 0 112px;
  }

  .page-home .home-download__grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 64px;
  }

  .page-home .home-feedback__inner {
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
  }

  .page-home .home-feedback__action {
    margin-top: 12px;
  }
}

@media (min-width: 1200px) {
  .page-home .home-hero__inner {
    min-height: 560px;
  }

  .page-home .home-upgrade__grid {
    grid-template-columns: repeat(3, 1fr);
    max-width: 1080px;
  }

  .page-home .home-feedback__channels {
    grid-template-columns: 1fr 1fr;
  }
}