.page-home {
  --home-rail: 132px;
  --home-ink-on-dark: rgba(244, 246, 250, 0.78);
  --home-rule-on-dark: rgba(244, 246, 250, 0.16);
  background: var(--paper);
  color: var(--blue-900);
}

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

/* ---------- 首屏 ---------- */
.page-home .home-stage {
  position: relative;
  z-index: 2;
  padding: clamp(36px, 7vw, 76px) 0 clamp(40px, 6vw, 64px);
  background:
    radial-gradient(120% 90% at 88% 6%, rgba(255, 143, 92, 0.28), transparent 58%),
    linear-gradient(158deg, var(--blue-900) 0%, var(--blue-700) 58%, var(--blue-500) 100%);
  color: var(--paper);
  overflow: visible;
}

.page-home .home-stage::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(135deg, rgba(244, 246, 250, 0.05) 0 1px, transparent 1px 4px);
  opacity: 0.6;
}

.page-home .home-stage__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 5vw, 48px);
  align-items: end;
}

.page-home .home-context {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--orange-300);
}

.page-home .home-context::before {
  content: "";
  display: inline-block;
  width: 26px;
  height: 2px;
  margin-right: 10px;
  vertical-align: middle;
  background: var(--orange);
}

.page-home h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 8vw, 64px);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.page-home .home-lede {
  margin: 20px 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--home-ink-on-dark);
}

.page-home .home-index {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 26px 0 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--home-rule-on-dark);
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: rgba(244, 246, 250, 0.6);
}

.page-home .home-index b {
  color: var(--acid);
  font-weight: 700;
}

.page-home .home-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.page-home .home-stage__figure {
  position: relative;
  margin: 0;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 44px), calc(100% - 44px) 100%, 0 100%);
  border: 1px solid rgba(244, 246, 250, 0.24);
  background: var(--blue-700);
  box-shadow: 18px 18px 0 rgba(255, 143, 92, 0.18);
}

.page-home .home-stage__figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: center 60%;
}

.page-home .home-stage__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(200deg, rgba(8, 21, 43, 0.05) 40%, rgba(8, 21, 43, 0.7) 100%);
}

.page-home .home-stage__figure figcaption {
  position: absolute;
  left: 18px;
  bottom: 16px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--acid);
}

/* ---------- 章节骨架 ---------- */
.page-home .sec {
  position: relative;
  padding: clamp(48px, 8vw, 92px) 0;
}

.page-home .sec__grid {
  display: grid;
  gap: var(--sp-3);
}

.page-home .sec__rail {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.page-home .sec__rail .chapter-no {
  font-family: var(--font-mono);
  font-size: clamp(38px, 7vw, 68px);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.05em;
  color: var(--orange);
}

.page-home .sec__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.page-home .sec__body h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1.24;
  letter-spacing: -0.02em;
}

.page-home .sec__lede {
  margin: 0;
  max-width: 46em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--blue-500);
}

.page-home .sec__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

/* ---------- 01 目录 ---------- */
.page-home .sec--index {
  position: relative;
  z-index: 1;
  padding-top: clamp(56px, 10vw, 132px);
  background: linear-gradient(180deg, var(--mist) 0%, var(--paper) 46%);
}

.page-home .idx-list {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-home .idx-item {
  border-bottom: 1px solid var(--line);
}

.page-home .idx-link {
  position: relative;
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) 26px;
  grid-template-areas:
    "code title arrow"
    "code desc arrow";
  gap: 6px 14px;
  padding: 18px 4px;
  color: inherit;
  text-decoration: none;
  overflow: hidden;
}

.page-home .idx-link::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255, 90, 31, 0.16), rgba(200, 255, 61, 0.12));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 400ms var(--ease);
}

.page-home .idx-link:hover::before,
.page-home .idx-link:focus-visible::before {
  transform: scaleX(1);
}

.page-home .idx-code,
.page-home .idx-title,
.page-home .idx-desc,
.page-home .idx-arrow {
  position: relative;
  z-index: 1;
}

.page-home .idx-code {
  grid-area: code;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--orange);
  align-self: center;
}

.page-home .idx-title {
  grid-area: title;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(19px, 2.4vw, 24px);
  letter-spacing: -0.01em;
}

.page-home .idx-desc {
  grid-area: desc;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-home .idx-arrow {
  grid-area: arrow;
  align-self: center;
  justify-self: end;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--blue-500);
  transition: transform 280ms var(--ease), color 280ms var(--ease);
}

.page-home .idx-link:hover .idx-arrow,
.page-home .idx-link:focus-visible .idx-arrow {
  transform: translateX(5px);
  color: var(--orange);
}

/* ---------- 02 会员档位 ---------- */
.page-home .sec--tiers {
  background: var(--paper);
}

.page-home .tiers {
  display: grid;
  gap: 12px;
  margin-top: 30px;
}

.page-home .tier {
  border: 1px solid var(--line);
  background: #ffffff;
  transition: border-color 240ms var(--ease);
}

.page-home .tier[open] {
  border-color: var(--orange-300);
  background: var(--mist);
}

.page-home .tier summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  padding: 18px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-home .tier summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--orange);
  line-height: 1;
}

.page-home .tier[open] summary::after {
  content: "–";
}

.page-home .tier__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
}

.page-home .tier__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  letter-spacing: -0.01em;
}

.page-home .tier__hint {
  padding: 3px 9px;
  font-size: 12px;
  color: var(--blue-900);
  background: var(--acid);
  border: 1px solid var(--blue-900);
}

.page-home .tier__body {
  padding: 0 18px 20px;
}

.page-home .tier__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--blue-500);
}

/* ---------- 03 资源上新 ---------- */
.page-home .sec--drops {
  background: linear-gradient(168deg, var(--blue-900) 0%, var(--blue-700) 74%, var(--blue-500) 100%);
  color: var(--paper);
}

.page-home .sec--drops .chapter-no {
  color: var(--orange-300);
}

.page-home .sec--drops .sec__kicker {
  color: rgba(244, 246, 250, 0.58);
}

.page-home .sec--drops .sec__lede {
  color: var(--home-ink-on-dark);
}

.page-home .drops {
  display: grid;
  gap: 24px;
  margin-top: 30px;
}

.page-home .drops__figure {
  margin: 0;
  border: 1px solid var(--home-rule-on-dark);
  background: var(--blue-700);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
}

.page-home .drops__figure img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-home .drops__figure figcaption {
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--orange-300);
  border-top: 1px solid var(--home-rule-on-dark);
}

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

.page-home .drops__cats li {
  padding: 14px 0;
  border-top: 1px solid var(--home-rule-on-dark);
}

.page-home .drops__cats li:last-child {
  border-bottom: 1px solid var(--home-rule-on-dark);
}

.page-home .drops__cat {
  display: inline-block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--acid);
}

.page-home .drops__cats p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--home-ink-on-dark);
}

.page-home .drops__latest {
  margin-top: 28px;
}

.page-home .drops__latest-title {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(244, 246, 250, 0.58);
}

.page-home .drops__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .drops__list li {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--home-rule-on-dark);
  font-size: 14px;
  line-height: 1.6;
}

.page-home .drops__list code {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--orange-300);
  align-self: center;
}

/* ---------- 04 手机端 ---------- */
.page-home .sec--mobile {
  background: var(--paper);
}

.page-home .two-step {
  display: grid;
  gap: 26px;
  margin-top: 30px;
}

.page-home .phone-figure {
  position: relative;
  margin: 0;
  padding: 10px;
  background: #ffffff;
  border: 1px solid var(--line);
  box-shadow: 14px 14px 0 rgba(255, 90, 31, 0.12);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 32px), calc(100% - 32px) 100%, 0 100%);
}

.page-home .phone-figure img {
  width: 100%;
  aspect-ratio: 9 / 10;
  object-fit: cover;
}

.page-home .phone-figure figcaption {
  padding: 10px 4px 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
}

.page-home .steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: stepnum;
  display: grid;
  gap: 20px;
}

.page-home .steps li {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 10px 14px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
  counter-increment: stepnum;
}

.page-home .steps li::before {
  content: "0" counter(stepnum);
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-home .steps h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  letter-spacing: -0.01em;
}

.page-home .steps p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-home .drawer-note {
  margin-top: 24px;
  padding: 20px 20px 22px;
  background: var(--mist);
  border-left: 4px solid var(--orange);
}

.page-home .drawer-note__title {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--blue-900);
}

.page-home .drawer-note p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--blue-500);
}

.page-home .drawer-note__link {
  display: inline-block;
  margin-top: 12px;
  font-size: 14px;
  font-weight: 700;
  color: var(--blue-900);
  text-decoration: none;
  border-bottom: 2px solid var(--orange);
}

.page-home .drawer-note__link:hover {
  color: var(--orange);
}

/* ---------- 05 覆盖 ---------- */
.page-home .sec--final {
  padding-bottom: 0;
  background:
    radial-gradient(90% 70% at 12% 0%, rgba(255, 143, 92, 0.22), transparent 62%),
    linear-gradient(174deg, var(--blue-900) 0%, var(--blue-700) 100%);
  color: var(--paper);
}

.page-home .sec--final .chapter-no {
  color: var(--orange-300);
}

.page-home .sec--final .sec__kicker {
  color: rgba(244, 246, 250, 0.58);
}

.page-home .sec--final .sec__lede {
  color: var(--home-ink-on-dark);
}

.page-home .stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 20px;
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
}

.page-home .stat {
  padding-top: 12px;
  border-top: 2px solid var(--orange);
}

.page-home .stat b {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--acid);
}

.page-home .stat span {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(244, 246, 250, 0.62);
}

.page-home .banner {
  position: relative;
  margin: clamp(40px, 7vw, 72px) 0 0;
}

.page-home .banner img {
  width: 100%;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.page-home .banner figcaption {
  position: absolute;
  left: var(--gutter);
  bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: rgba(244, 246, 250, 0.86);
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 900px) {
  .page-home .home-stage {
    padding-bottom: 0;
  }

  .page-home .home-stage__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-home .home-stage__figure {
    margin-bottom: -132px;
    box-shadow: 24px 24px 0 rgba(255, 143, 92, 0.2);
  }

  .page-home .home-stage__figure img {
    aspect-ratio: 4 / 5;
  }

  .page-home .sec__grid {
    grid-template-columns: var(--home-rail) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-home .sec__rail {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .page-home .idx-link {
    grid-template-columns: 84px minmax(150px, 210px) minmax(0, 1fr) 32px;
    grid-template-areas: "code title desc arrow";
    align-items: baseline;
    gap: 18px;
    padding: 22px 8px;
  }

  .page-home .drops {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }

  .page-home .two-step {
    grid-template-columns: 300px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 52px);
    align-items: start;
  }

  .page-home .stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
  }
}

@media (min-width: 1180px) {
  .page-home .home-stage__figure {
    margin-bottom: -168px;
  }

  .page-home .two-step {
    grid-template-columns: 340px minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .idx-link::before,
  .page-home .idx-arrow {
    transition: none;
  }
}