.page-home {
  --home-hair: rgba(110, 106, 85, .34);
  --home-rise: clamp(56px, 9vw, 116px);
  --home-gap: clamp(16px, 2.4vw, 26px);
  display: block;
  background: var(--deep-sea);
  color: var(--pearl);
}

/* ---------- 首屏 ---------- */
.page-home .home-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(34px, 6vw, 76px) 0 clamp(104px, 13vw, 168px);
  background:
    radial-gradient(115% 72% at 84% 4%, rgba(53, 224, 200, .11), transparent 58%),
    radial-gradient(95% 68% at 4% 96%, rgba(255, 138, 76, .08), transparent 62%),
    linear-gradient(180deg, #061a28 0%, #05141f 58%, #030c15 100%);
}

.page-home .home-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 5vw, 46px);
  position: relative;
  z-index: 2;
}

.page-home .hero-rail {
  order: 2;
  padding-top: clamp(14px, 3vw, 22px);
  border-top: 1px solid var(--line-soft);
}

.page-home .hero-main {
  order: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 46px);
}

.page-home .hero-rail__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .26em;
  color: var(--gold-grey);
}

.page-home .hero-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.page-home .hero-rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: 9px;
  padding: 4px 0;
  text-decoration: none;
  color: var(--mist);
  transition: color .32s var(--ease);
}

.page-home .hero-rail__num {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--dark-gold);
  transition: color .32s var(--ease);
}

.page-home .hero-rail__name {
  font-size: 13.5px;
  letter-spacing: .04em;
}

.page-home .hero-rail__link:hover,
.page-home .hero-rail__link[aria-current="true"] {
  color: var(--neon-teal);
}

.page-home .hero-rail__link:hover .hero-rail__num,
.page-home .hero-rail__link[aria-current="true"] .hero-rail__num {
  color: var(--neon-teal);
}

.page-home .hero-copy {
  max-width: 60ch;
}

.page-home .hero-title {
  margin: 16px 0 0;
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(34px, 7.2vw, 72px);
  line-height: 1.14;
  letter-spacing: .02em;
  color: var(--pearl);
  text-wrap: balance;
}

.page-home .hero-title::after {
  content: "";
  display: block;
  width: clamp(56px, 12vw, 108px);
  height: 1px;
  margin-top: clamp(18px, 3vw, 28px);
  background: linear-gradient(90deg, var(--dark-gold), var(--neon-teal), transparent);
}

.page-home .hero-lede {
  margin: clamp(18px, 3vw, 26px) 0 0;
  max-width: 48ch;
  color: #ccdadd;
}

.page-home .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 14px;
  margin-top: clamp(24px, 4vw, 34px);
}

.page-home .hero-stat {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin: clamp(26px, 4vw, 38px) 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
}

.page-home .hero-stat__num {
  font-family: var(--font-mono);
  font-size: clamp(34px, 6vw, 52px);
  font-weight: 500;
  line-height: .9;
  color: var(--neon-teal);
}

.page-home .hero-stat__k {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-home .hero-figure {
  margin: 0;
}

.page-home .hero-figure .figure__media {
  overflow: hidden;
  border: 1px solid var(--line-soft);
  background: linear-gradient(160deg, rgba(13, 46, 40, .92), rgba(6, 26, 40, .6));
  box-shadow: 0 34px 70px -46px rgba(53, 224, 200, .48);
}

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

.page-home .home-hero__tags {
  position: relative;
  z-index: 2;
  margin-top: clamp(34px, 5vw, 56px);
}

.page-home .hero-tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 9px 10px;
}

.page-home .hero-tags li {
  padding: 7px 13px;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--mist);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--glass);
}

.page-home .hero-wave {
  position: absolute;
  left: -1%;
  bottom: -1px;
  width: 102%;
  height: clamp(88px, 14vw, 176px);
  z-index: 1;
  display: block;
  pointer-events: none;
  animation: home-drift 20s ease-in-out infinite;
}

@keyframes home-drift {
  0%, 100% { transform: translateX(-1.1%); }
  50% { transform: translateX(1.1%); }
}

/* ---------- 章节标题 ---------- */
.page-home .section {
  position: relative;
  padding: var(--home-rise) 0;
}

.page-home .section--tight {
  padding: clamp(48px, 7vw, 92px) 0 clamp(64px, 9vw, 120px);
}

.page-home .section--board {
  background: linear-gradient(180deg, rgba(13, 46, 40, .55), rgba(13, 46, 40, 0) 78%);
}

.page-home .chapter {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "num label"
    "num title";
  column-gap: clamp(14px, 3vw, 30px);
  row-gap: 8px;
  align-items: start;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-home .chapter__num {
  grid-area: num;
  font-family: var(--font-mono);
  font-size: clamp(44px, 8.6vw, 88px);
  font-weight: 500;
  line-height: .84;
  letter-spacing: -.02em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(201, 162, 39, .58);
}

.page-home .chapter__label {
  grid-area: label;
  align-self: end;
  margin: 0;
  padding-bottom: 5px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .24em;
  color: var(--gold-grey);
}

.page-home .chapter__title {
  grid-area: title;
  margin: 0;
  max-width: 26ch;
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(24px, 4.2vw, 40px);
  line-height: 1.32;
  letter-spacing: .015em;
  color: var(--pearl);
}

.page-home .section-lede {
  max-width: 62ch;
  margin: 0 0 clamp(26px, 4vw, 40px);
}

.page-home .section-foot {
  margin: clamp(24px, 3.5vw, 36px) 0 0;
  font-size: 14px;
  color: var(--mist);
}

.page-home .link-teal {
  color: var(--neon-teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 200, .4);
  transition: border-color .3s var(--ease), color .3s var(--ease);
}

.page-home .link-teal:hover {
  color: var(--warm-orange);
  border-bottom-color: rgba(255, 138, 76, .6);
}

/* ---------- 01 当季版本 ---------- */
.page-home .ver-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--home-gap);
}

.page-home .ver-card {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 3.6vw, 38px);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-home .ver-card__bar {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--dark-gold), transparent 72%);
  transition: background .36s var(--ease);
}

.page-home .ver-card:hover .ver-card__bar {
  background: linear-gradient(90deg, var(--neon-teal), transparent 72%);
}

.page-home .ver-card__os {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: .22em;
  color: var(--gold-grey);
}

.page-home .ver-card__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(19px, 2.6vw, 24px);
  line-height: 1.4;
  color: var(--pearl);
}

.page-home .ver-card__text {
  margin: 0;
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: #c3d2d6;
}

.page-home .stat-band {
  list-style: none;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: clamp(22px, 3vw, 30px) 0 0;
  border-top: 1px solid var(--line-soft);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 30px);
}

.page-home .stat-band__item {
  min-width: 0;
  border-left: 1px solid var(--home-hair);
  padding-left: 14px;
}

.page-home .stat-band__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 500;
  line-height: 1;
  color: var(--dark-gold);
}

.page-home .stat-band__unit {
  margin-left: 4px;
  font-size: .46em;
  letter-spacing: .08em;
  color: var(--mist);
}

.page-home .stat-band__label {
  margin: 10px 0 0;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- 02 六个内容大类 ---------- */
.page-home .board-lead {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.6vw, 40px);
  margin-bottom: clamp(28px, 4.4vw, 48px);
}

.page-home .board-figure {
  margin: 0;
}

.page-home .board-figure .figure__media {
  overflow: hidden;
  border: 1px solid var(--line-soft);
  background: linear-gradient(150deg, rgba(13, 46, 40, .9), rgba(6, 26, 40, .7));
}

.page-home .board-figure img,
.page-home .archive-figure img,
.page-home .start-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-home .board-lead__copy .prose + .prose {
  margin-top: 1.1em;
}

.page-home .board-cta {
  margin-top: clamp(20px, 3vw, 28px);
}

.page-home .board-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2vw, 22px);
}

.page-home .board-card {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 3vw, 30px);
  border: 1px solid rgba(201, 162, 39, .26);
  border-radius: var(--radius);
  background: linear-gradient(165deg, rgba(255, 255, 255, .07), rgba(255, 255, 255, .02));
  backdrop-filter: blur(6px);
  transition: border-color .34s var(--ease), transform .34s var(--ease), box-shadow .34s var(--ease);
}

.page-home .board-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(82% 78% at 50% 104%, rgba(53, 224, 200, .17), transparent 66%);
  opacity: 0;
  pointer-events: none;
  transition: opacity .38s var(--ease);
}

.page-home .board-card:hover {
  border-color: var(--neon-teal);
  transform: translateY(-3px);
  box-shadow: 0 20px 42px -26px rgba(53, 224, 200, .6);
}

.page-home .board-card:hover::after {
  opacity: 1;
}

.page-home .board-card__code {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .22em;
  color: var(--dark-gold);
  transition: color .34s var(--ease);
}

.page-home .board-card:hover .board-card__code {
  color: var(--neon-teal);
}

.page-home .board-card__title {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(19px, 2.6vw, 23px);
  line-height: 1.4;
  color: var(--pearl);
}

.page-home .board-card__text {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 03 新用户第一程 ---------- */
.page-home .start-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 46px);
}

.page-home .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(20px, 3vw, 28px);
  counter-reset: none;
}

.page-home .step {
  position: relative;
  padding-left: clamp(50px, 9vw, 74px);
}

.page-home .step::before {
  content: "";
  position: absolute;
  left: clamp(21px, 3.6vw, 30px);
  left: calc(clamp(50px, 9vw, 74px) - clamp(26px, 4.6vw, 38px));
  top: 30px;
  bottom: -28px;
  width: 1px;
  background: linear-gradient(180deg, rgba(201, 162, 39, .5), rgba(201, 162, 39, .06));
}

.page-home .step:last-child::before {
  display: none;
}

.page-home .step__num {
  position: absolute;
  left: 0;
  top: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: clamp(38px, 6.4vw, 50px);
  height: clamp(38px, 6.4vw, 50px);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--dark-gold);
  border: 1px solid rgba(201, 162, 39, .46);
  border-radius: 50%;
  background: rgba(201, 162, 39, .06);
  transition: color .34s var(--ease), border-color .34s var(--ease), background .34s var(--ease);
}

.page-home .step:hover .step__num {
  color: var(--neon-teal);
  border-color: var(--neon-teal);
  background: rgba(53, 224, 200, .1);
}

.page-home .step__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(19px, 2.6vw, 23px);
  line-height: 1.42;
  color: var(--pearl);
}

.page-home .step__text {
  margin: 10px 0 0;
  max-width: 52ch;
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: #c3d2d6;
}

.page-home .start-figure {
  margin: 0;
  align-self: start;
}

.page-home .start-figure .figure__media {
  overflow: hidden;
  aspect-ratio: 5 / 3;
  border: 1px solid var(--line-soft);
  background: linear-gradient(150deg, rgba(6, 26, 40, .94), rgba(13, 46, 40, .6));
}

.page-home .start-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 04 资料库目录 ---------- */
.page-home .section--archive {
  background: linear-gradient(180deg, rgba(3, 12, 21, 0), rgba(13, 46, 40, .48) 42%, rgba(3, 12, 21, .6));
}

.page-home .archive-lead {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  margin-bottom: clamp(28px, 4.4vw, 46px);
}

.page-home .archive-figure {
  margin: 0;
}

.page-home .archive-figure .figure__media {
  overflow: hidden;
  border: 1px solid var(--line-soft);
  background: linear-gradient(150deg, rgba(13, 46, 40, .9), rgba(6, 26, 40, .7));
}

.page-home .archive-bands {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-home .band {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .035);
  transition: border-color .34s var(--ease), background .34s var(--ease);
}

.page-home .band:hover {
  border-color: rgba(53, 224, 200, .55);
  background: rgba(53, 224, 200, .05);
}

.page-home .band[open] {
  border-color: rgba(201, 162, 39, .5);
  background: rgba(201, 162, 39, .05);
}

.page-home .band__head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px clamp(16px, 2.6vw, 22px);
  cursor: pointer;
  list-style: none;
}

.page-home .band__head::-webkit-details-marker {
  display: none;
}

.page-home .band__letter {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 500;
  line-height: 1;
  color: var(--dark-gold);
  animation: home-breathe 5.8s var(--ease) infinite;
}

.page-home .band:nth-child(2) .band__letter { animation-delay: .5s; }
.page-home .band:nth-child(3) .band__letter { animation-delay: 1s; }
.page-home .band:nth-child(4) .band__letter { animation-delay: 1.5s; }
.page-home .band:nth-child(5) .band__letter { animation-delay: 2s; }
.page-home .band:nth-child(6) .band__letter { animation-delay: 2.5s; }

@keyframes home-breathe {
  0%, 100% { letter-spacing: .04em; }
  50% { letter-spacing: .18em; }
}

.page-home .band__name {
  font-size: 15px;
  letter-spacing: .05em;
  color: var(--pearl);
}

.page-home .band__body {
  margin: 0;
  padding: 0 clamp(16px, 2.6vw, 22px) 18px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 05 常用页面收藏 ---------- */
.page-home .fav-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 38px);
}

.page-home .fav-panel {
  padding: clamp(26px, 3.8vw, 40px);
  background: linear-gradient(158deg, rgba(53, 224, 200, .1), rgba(255, 255, 255, .03) 68%);
}

.page-home .fav-panel__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(60px, 12vw, 104px);
  font-weight: 500;
  line-height: .84;
  color: var(--neon-teal);
}

.page-home .fav-panel__label {
  margin: 14px 0 0;
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--pearl);
}

.page-home .fav-panel__text {
  margin: 14px 0 0;
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: #c3d2d6;
}

.page-home .fav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(18px, 2.6vw, 26px);
}

.page-home .fav-list__item {
  padding-left: 18px;
  border-left: 1px solid var(--home-hair);
}

.page-home .fav-list__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(18px, 2.4vw, 21px);
  line-height: 1.44;
  color: var(--pearl);
}

.page-home .fav-list__text {
  margin: 9px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 06 下一步 ---------- */
.page-home .next-links {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-home .next-link {
  display: grid;
  gap: 7px;
  padding: 20px clamp(18px, 2.6vw, 26px);
  text-decoration: none;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .03);
  transition: border-color .34s var(--ease), background .34s var(--ease), transform .34s var(--ease);
}

.page-home .next-link:hover {
  border-color: var(--neon-teal);
  background: rgba(53, 224, 200, .07);
  transform: translateX(4px);
}

.page-home .next-link__title {
  font-family: var(--font-head);
  font-weight: 300;
  font-size: 19px;
  letter-spacing: .04em;
  color: var(--pearl);
}

.page-home .next-link__desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 回到轨道 ---------- */
.page-home .rail-float {
  position: fixed;
  right: clamp(16px, 3vw, 32px);
  bottom: clamp(18px, 3vw, 34px);
  z-index: 40;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  font-size: 17px;
  line-height: 1;
  text-decoration: none;
  color: var(--neon-teal);
  border: 1px solid rgba(53, 224, 200, .5);
  border-radius: 50%;
  background: rgba(6, 26, 40, .78);
  backdrop-filter: blur(8px);
  transition: color .32s var(--ease), border-color .32s var(--ease), background .32s var(--ease);
}

.page-home .rail-float:hover {
  color: var(--midnight);
  background: var(--neon-teal);
  border-color: var(--neon-teal);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-home .stat-band {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-home .board-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .archive-bands {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .next-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-home .ver-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .board-lead {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: center;
  }

  .page-home .start-layout {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: center;
  }

  .page-home .archive-lead {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: center;
  }

  .page-home .fav-layout {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    align-items: start;
  }
}

@media (min-width: 920px) {
  .page-home .home-hero__inner {
    grid-template-columns: 150px minmax(0, 1fr);
    column-gap: clamp(40px, 6vw, 74px);
    align-items: start;
  }

  .page-home .hero-rail {
    order: 0;
    padding-top: 6px;
    padding-left: 18px;
    border-top: 0;
    border-left: 1px solid var(--line-soft);
  }

  .page-home .hero-main {
    order: 0;
  }

  .page-home .hero-rail__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 20px;
  }
}

@media (min-width: 1040px) {
  .page-home .hero-main {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: end;
  }

  .page-home .board-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-home .archive-bands {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-home .next-links {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .hero-wave,
  .page-home .band__letter {
    animation: none;
  }

  .page-home .board-card,
  .page-home .next-link,
  .page-home .rail-float {
    transition: none;
  }
}