.page-home {
  --home-dash: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 22px);
  --home-glow-m: 0 0 30px -8px rgba(255, 62, 143, .65);
  --home-glow-l: 0 0 30px -8px rgba(184, 255, 60, .65);
  padding-bottom: 72px;
  overflow-x: clip;
}

.page-home .hero,
.page-home .section {
  padding-top: 0;
}

/* ---------- 面包屑 ---------- */
.page-home .breadcrumb {
  padding-top: 20px;
  padding-bottom: 24px;
}

/* ---------- 通用小标题组 ---------- */
.page-home .blockintro {
  margin-bottom: 34px;
}
.page-home .blockintro .lede {
  margin-top: 14px;
  max-width: 62ch;
  color: var(--text-dim);
}
.page-home .blockintro h2 {
  margin-top: 10px;
}

/* =======================================================
   1. 首屏框景
   ======================================================= */
.page-home .hero__frame {
  position: relative;
  padding: 38px 18px 48px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background:
    radial-gradient(140% 90% at 12% 0%, rgba(255, 62, 143, .18), transparent 55%),
    radial-gradient(120% 90% at 92% 100%, rgba(53, 230, 224, .16), transparent 60%),
    linear-gradient(170deg, var(--ink-800), var(--ink-900) 72%);
  overflow: hidden;
}
.page-home .hero__frame::before,
.page-home .hero__frame::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 9px;
  background-image: var(--home-dash);
  opacity: .7;
  pointer-events: none;
}
.page-home .hero__frame::before { top: 12px; }
.page-home .hero__frame::after { bottom: 12px; }

.page-home .hero__inner {
  display: grid;
  gap: 40px;
  align-items: center;
}

.page-home .hero__title {
  margin: 18px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(36px, 9vw, 70px);
  line-height: 1.03;
  letter-spacing: .015em;
  color: var(--text);
}
.page-home .hero__title span { display: block; }
.page-home .hero__title-accent {
  color: var(--magenta);
  text-shadow:
    0 0 6px rgba(255, 62, 143, .95),
    0 0 34px rgba(53, 230, 224, .40);
}

.page-home .hero__lede {
  margin: 22px 0 0;
  max-width: 54ch;
  color: var(--text-dim);
  font-size: var(--fs-17);
  line-height: 1.8;
}

.page-home .hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-home .hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 30px;
  margin: 30px 0 0;
  padding-top: 18px;
  border-top: 1px dashed var(--line);
}
.page-home .hero__facts > div {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 0;
}
.page-home .hero__facts dt {
  margin: 0;
  color: var(--text-dim);
  font-size: var(--fs-12);
  letter-spacing: .1em;
}
.page-home .hero__facts dd {
  margin: 0;
  color: var(--text);
  font-weight: 700;
  font-size: var(--fs-14);
}
.page-home .hero__facts .num {
  font-family: var(--font-mono);
  font-size: var(--fs-22);
  font-weight: 700;
  color: var(--lime);
}

/* 首屏卡牌 */
.page-home .hero__stage {
  position: relative;
  display: grid;
  gap: 16px;
  justify-items: center;
  padding: 16px 0 0;
}

.page-home .hero__flip {
  position: relative;
  width: min(100%, 400px);
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-lg);
  outline: none;
  box-shadow: var(--home-glow-m);
}
.page-home .hero__flip:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 4px;
}
.page-home .hero__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-home .hero__badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
}
.page-home .hero__back {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
  height: 100%;
  padding: 26px 22px;
  background: linear-gradient(150deg, var(--card-back-a), var(--card-back-b));
  border: 1px solid var(--line);
  color: var(--text);
}
.page-home .hero__back-eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--amber);
}
.page-home .hero__back-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 5vw, 32px);
  line-height: 1.12;
}
.page-home .hero__back-copy {
  margin: 0;
  color: var(--text-dim);
  font-size: var(--fs-14);
  line-height: 1.75;
}
.page-home .hero__back .btn { align-self: flex-start; }

.page-home .hero__hint {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--text-dim);
}

/* =======================================================
   2. 双版对照台
   ======================================================= */
.page-home .costal {
  margin-top: 96px;
}
.page-home .costal__grid {
  display: grid;
  gap: 28px;
}
.page-home .costal__media { margin: 0; }

.page-home .costal__table {
  width: 100%;
  border-collapse: collapse;
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.page-home .costal__table th,
.page-home .costal__table td {
  text-align: left;
  padding: 14px 16px;
  vertical-align: top;
  transition: background 200ms var(--ease), color 200ms var(--ease);
}
.page-home .costal__table thead th {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .12em;
  text-transform: uppercase;
  background: var(--ink-800);
  border-bottom: 1px solid var(--line);
}
.page-home .costal__th--new { color: var(--lime); }
.page-home .costal__th--old { color: var(--amber); }

.page-home .costal__table tbody tr {
  border-top: 1px solid var(--line-soft);
}
.page-home .costal__table tbody th[scope="row"] {
  width: 22%;
  color: var(--text);
  font-weight: 700;
  font-size: var(--fs-14);
  background: var(--ink-800);
}
.page-home .costal__v {
  color: var(--text-dim);
  font-size: var(--fs-14);
  line-height: 1.65;
}
.page-home .costal__v--new { color: var(--text); }
.page-home .costal__v--old { color: var(--text); }

.page-home .costal__table tbody tr:hover th[scope="row"],
.page-home .costal__table tbody tr:focus-within th[scope="row"] {
  background: var(--ink-750);
  color: var(--lime);
}
.page-home .costal__table tbody tr:hover .costal__v--new,
.page-home .costal__table tbody tr:focus-within .costal__v--new {
  background: rgba(184, 255, 60, .12);
  box-shadow: inset 3px 0 0 var(--lime);
}
.page-home .costal__table tbody tr:hover .costal__v--old,
.page-home .costal__table tbody tr:focus-within .costal__v--old {
  background: rgba(255, 182, 39, .12);
  box-shadow: inset 3px 0 0 var(--amber);
}

/* =======================================================
   3. 四步上手轨
   ======================================================= */
.page-home .steps {
  margin-top: 96px;
}
.page-home .steps__track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-left: 1px solid var(--line);
}
.page-home .steps__item {
  position: relative;
  padding: 0 0 32px 30px;
}
.page-home .steps__item:last-child { padding-bottom: 0; }
.page-home .steps__item::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--lime);
  box-shadow: var(--home-glow-l);
}
.page-home .steps__num {
  display: inline-block;
  font-size: var(--fs-12);
  letter-spacing: .14em;
  color: var(--lime);
  margin-bottom: 6px;
}
.page-home .steps__h {
  margin: 0 0 8px;
  font-size: var(--fs-22);
  font-weight: 800;
  color: var(--text);
  line-height: 1.25;
}
.page-home .steps__item p {
  margin: 0 0 10px;
  color: var(--text-dim);
  font-size: var(--fs-17);
  line-height: 1.75;
  max-width: 52ch;
}
.page-home .steps__link {
  display: inline-block;
  color: var(--cyan);
  font-size: var(--fs-14);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 200ms var(--ease), color 200ms var(--ease);
}
.page-home .steps__link:hover,
.page-home .steps__link:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

/* =======================================================
   4. 栏目索引带
   ======================================================= */
.page-home .indexband {
  margin-top: 96px;
}
.page-home .indexband__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.page-home .indexband__row {
  border-bottom: 1px solid var(--line);
}
.page-home .indexband__link,
.page-home .indexband__row--here {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "num name"
    "num desc"
    "num note";
  column-gap: 18px;
  row-gap: 6px;
  padding: 22px 4px;
  text-decoration: none;
  color: inherit;
  transition: background 200ms var(--ease), padding 200ms var(--ease);
}
.page-home .indexband__link:hover,
.page-home .indexband__link:focus-visible {
  background: var(--glass);
  padding-left: 14px;
  padding-right: 14px;
}
.page-home .indexband__link:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
}
.page-home .indexband__num {
  grid-area: num;
  font-size: var(--fs-22);
  font-weight: 700;
  color: var(--line);
  line-height: 1.1;
}
.page-home .indexband__link:hover .indexband__num,
.page-home .indexband__link:focus-visible .indexband__num {
  color: var(--magenta);
}
.page-home .indexband__name {
  grid-area: name;
  font-size: var(--fs-22);
  font-weight: 800;
  color: var(--text);
  letter-spacing: .01em;
}
.page-home .indexband__link:hover .indexband__name,
.page-home .indexband__link:focus-visible .indexband__name {
  color: var(--lime);
}
.page-home .indexband__desc {
  grid-area: desc;
  color: var(--text-dim);
  font-size: var(--fs-14);
  line-height: 1.7;
  max-width: 60ch;
}
.page-home .indexband__note {
  grid-area: note;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .06em;
  color: var(--cyan);
}
.page-home .indexband__row--here {
  background: linear-gradient(90deg, rgba(255, 62, 143, .14), transparent 62%);
}
.page-home .indexband__row--here .indexband__num { color: var(--magenta); }
.page-home .indexband__row--here .indexband__note { color: var(--amber); }

/* =======================================================
   5. 规则与记录快照
   ======================================================= */
.page-home .snapshot {
  margin-top: 96px;
}
.page-home .snapshot__grid {
  display: grid;
  gap: 24px;
}
.page-home .snapshot__media { margin: 0; }
.page-home .snapshot__cards {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}
.page-home .snapshot__card {
  padding: 20px 18px;
  border-radius: var(--radius);
  background: var(--glass);
  border: 1px solid var(--line);
  transition: transform 200ms var(--ease), border-color 200ms var(--ease);
}
.page-home .snapshot__card:hover {
  transform: translateY(-4px);
  border-color: var(--cyan);
}
.page-home .snapshot__card .tag {
  display: inline-block;
  margin-bottom: 10px;
}
.page-home .snapshot__card p {
  margin: 0;
  color: var(--text);
  font-size: var(--fs-14);
  line-height: 1.75;
}

/* =======================================================
   6. 换机与收藏夹
   ======================================================= */
.page-home .swap {
  margin-top: 96px;
}
.page-home .swap__grid {
  display: grid;
  gap: 28px;
  align-items: center;
}
.page-home .swap__media { margin: 0; }
.page-home .swap__copy h2 {
  margin: 10px 0 16px;
}
.page-home .swap__copy > p {
  margin: 0 0 24px;
  color: var(--text-dim);
  font-size: var(--fs-17);
  line-height: 1.8;
  max-width: 56ch;
}
.page-home .swap__groups {
  display: grid;
  gap: 14px;
  margin-bottom: 26px;
}
.page-home .swap__group {
  padding: 14px 16px;
  border-left: 3px solid var(--magenta);
  background: var(--ink-800);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.page-home .swap__group:nth-child(2) { border-left-color: var(--cyan); }
.page-home .swap__group:nth-child(3) { border-left-color: var(--amber); }
.page-home .swap__group .tag {
  display: inline-block;
  margin-bottom: 8px;
}
.page-home .swap__group p {
  margin: 0;
  color: var(--text-dim);
  font-size: var(--fs-14);
  line-height: 1.7;
}

/* =======================================================
   7. 答疑与客服
   ======================================================= */
.page-home .ask {
  margin-top: 96px;
}
.page-home .ask__frame {
  display: grid;
  gap: 32px;
  padding: 36px 22px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background:
    radial-gradient(120% 100% at 0% 0%, rgba(184, 255, 60, .12), transparent 58%),
    linear-gradient(160deg, var(--ink-800), var(--ink-900));
}
.page-home .ask__copy h2 {
  margin: 10px 0 14px;
  color: var(--text);
}
.page-home .ask__copy > p {
  margin: 0 0 24px;
  color: var(--text-dim);
  font-size: var(--fs-17);
  line-height: 1.8;
  max-width: 58ch;
}
.page-home .ask__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-home .ask__contacts {
  margin: 0;
  padding: 22px 20px;
  border-radius: var(--radius);
  background: var(--ink-600);
  border: 1px solid var(--line);
  display: grid;
  gap: 14px;
}
.page-home .ask__contacts > div {
  display: grid;
  gap: 4px;
}
.page-home .ask__contacts dt {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.page-home .ask__contacts dd {
  margin: 0;
  color: var(--text);
  font-size: var(--fs-14);
  line-height: 1.6;
  word-break: break-word;
}
.page-home .ask__contacts dd.num {
  font-family: var(--font-mono);
  color: var(--lime);
  letter-spacing: .04em;
}

/* =======================================================
   响应式
   ======================================================= */
@media (min-width: 620px) {
  .page-home .hero__frame { padding: 46px 30px 56px; }
  .page-home .snapshot__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-home .swap__groups {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-home .ask__contacts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-home .hero__frame { padding: 60px 52px 66px; }
  .page-home .hero__inner {
    grid-template-columns: 1.06fr .94fr;
    gap: 56px;
  }
  .page-home .hero__stage {
    justify-items: end;
    padding-top: 0;
  }

  .page-home .costal__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 6fr);
    gap: 40px;
    align-items: start;
  }
  .page-home .costal__table tbody th[scope="row"] { width: 24%; }

  .page-home .steps__track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    border-left: 0;
    border-top: 1px solid var(--line);
    column-gap: 24px;
  }
  .page-home .steps__item {
    padding: 30px 0 0 0;
  }
  .page-home .steps__item::before {
    left: 0;
    top: -6px;
  }

  .page-home .indexband__link,
  .page-home .indexband__row--here {
    grid-template-columns: 64px 200px 1fr 220px;
    grid-template-areas: "num name desc note";
    align-items: baseline;
    column-gap: 28px;
    padding: 24px 4px;
  }
  .page-home .indexband__note { text-align: right; }

  .page-home .snapshot__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 40px;
    align-items: start;
  }

  .page-home .swap__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 48px;
  }

  .page-home .ask__frame {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    padding: 48px 44px;
    align-items: start;
  }
}

@media (min-width: 1160px) {
  .page-home .hero__frame { padding: 68px 60px 74px; }
  .page-home .indexband__link,
  .page-home .indexband__row--here {
    grid-template-columns: 72px 220px 1fr 240px;
    column-gap: 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .snapshot__card,
  .page-home .indexband__link,
  .page-home .steps__link {
    transition: none;
  }
  .page-home .snapshot__card:hover { transform: none; }
}