.page-home {
  --home-gap: clamp(1.5rem, 4vw, 3rem);
  --home-card-bg: rgba(16, 32, 58, 0.62);
  background: var(--abyss-900);
  color: var(--ink-050);
  overflow-x: hidden;
}

/* ---------- 首屏：斜切色块 + 左悬浮入口卡 ---------- */
.page-home .hero-home {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(2.25rem, 6vw, 4.5rem) 0 clamp(2.75rem, 7vw, 5.5rem);
  background:
    radial-gradient(110% 80% at 82% 6%, rgba(79, 209, 176, 0.1), transparent 62%),
    linear-gradient(180deg, var(--abyss-950) 0%, var(--abyss-900) 76%, var(--abyss-900) 100%);
}

.page-home .hero-slash {
  position: absolute;
  left: -10%;
  right: -10%;
  bottom: -20%;
  height: 66%;
  z-index: -1;
  background: linear-gradient(100deg, var(--abyss-800), transparent 72%);
  clip-path: polygon(0 42%, 100% 0, 100% 100%, 0 100%);
}

.page-home .hero-home::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--abyss-700) 18%, var(--coral-500) 52%, var(--abyss-700) 82%, transparent);
  opacity: 0.55;
}

.page-home .hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--home-gap);
  align-items: start;
}

.page-home .hero-card-col {
  position: relative;
  max-width: 34rem;
  padding: clamp(1.5rem, 4.4vw, 2.5rem);
  background: linear-gradient(158deg, var(--abyss-800), rgba(16, 32, 58, 0.7));
  border: 1px solid var(--abyss-700);
}

.page-home .hero-card-col::after {
  content: "";
  position: absolute;
  inset: 8px -10px -10px 8px;
  border: 1px solid rgba(232, 237, 242, 0.18);
  pointer-events: none;
  z-index: -1;
}

.page-home .hero-title {
  margin: 0.6rem 0 0.75rem;
  font-size: clamp(2rem, 5.6vw, 3.6rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: 0.01em;
}

.page-home .hero-line {
  max-width: 26em;
  margin: 0;
  color: var(--ink-300);
  font-size: 1rem;
  line-height: 1.75;
}

.page-home .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.page-home .ripple-btn {
  background-image: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0) 62%);
  background-repeat: no-repeat;
  background-position: center center;
  background-size: 0% 0%;
  transition: background-size 560ms var(--ease), background-color 220ms var(--ease);
}

.page-home .ripple-btn:hover,
.page-home .ripple-btn:focus-visible {
  background-size: 240% 340%;
}

.page-home .hero-visual {
  position: relative;
  margin: 0;
}

.page-home .hero-visual::before {
  content: "";
  position: absolute;
  inset: -8% -4% -6% 10%;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(58% 48% at 28% 72%, rgba(79, 209, 176, 0.16), transparent 70%),
    radial-gradient(52% 42% at 82% 28%, rgba(255, 106, 61, 0.12), transparent 72%);
}

.page-home .hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--abyss-700);
  opacity: 0.84;
}

/* ---------- 上下文条 ---------- */
.page-home .home-crumbs {
  padding: 1rem 0 0;
}

/* ---------- 章节骨架 ---------- */
.page-home .depth-a {
  background: var(--abyss-900);
}

.page-home .depth-b {
  background: linear-gradient(180deg, var(--abyss-900) 0%, var(--abyss-950) 100%);
}

.page-home .depth-c {
  background: var(--abyss-950);
}

.page-home .chapter-wrap {
  position: relative;
}

.page-home .chapter-block .chapter-head {
  position: relative;
  display: grid;
  gap: 0.6rem;
  margin-bottom: clamp(1.5rem, 4vw, 2.75rem);
}

.page-home .chapter-block .chapter-index {
  font-size: clamp(2.4rem, 7vw, 4.4rem);
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: 0.04em;
  color: transparent;
  -webkit-text-stroke: 1px var(--abyss-700);
  transition-delay: 80ms;
}

.page-home .chapter-block .chapter-title {
  max-width: 24em;
  font-size: clamp(1.5rem, 3.8vw, 2.3rem);
  font-weight: 800;
  line-height: 1.22;
}

.page-home .chapter-block .chapter-note {
  font-size: 0.74rem;
  letter-spacing: 0.2em;
  color: var(--ink-300);
  text-transform: uppercase;
}

.page-home .chapter-spine {
  display: none;
}

/* ---------- 图与说明 ---------- */
.page-home figure {
  margin: 0;
}

.page-home .entry-fig img,
.page-home .personal-fig img,
.page-home .coverage-fig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--abyss-700);
}

.page-home figcaption {
  margin-top: 0.65rem;
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  color: var(--ink-300);
}

/* ---------- 文字与列表元件 ---------- */
.page-home .entry-copy p,
.page-home .personal-copy p,
.page-home .coverage-copy p,
.page-home .help-grid p {
  max-width: 34em;
}

.page-home .plain-list {
  list-style: none;
  margin: 1.25rem 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
  font-size: 0.95rem;
}

.page-home .plain-list li {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  color: var(--ink-300);
}

.page-home .plain-list .num {
  color: var(--coral-500);
  font-size: 0.78rem;
}

.page-home .text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--celadon-400);
  font-size: 0.92rem;
  text-decoration: none;
  padding-bottom: 0.15rem;
  border-bottom: 1px solid rgba(79, 209, 176, 0.35);
}

.page-home .text-link::after {
  content: "→";
  transition: transform 260ms var(--ease);
}

.page-home .text-link:hover::after,
.page-home .text-link:focus-visible::after {
  transform: translateX(4px);
}

.page-home .text-link:focus-visible {
  outline: 2px solid var(--coral-500);
  outline-offset: 3px;
}

/* ---------- 01 入口层 ---------- */
.page-home .entry-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--home-gap);
  align-items: start;
}

/* ---------- 02 个人栏层 ---------- */
.page-home .personal-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--home-gap);
  align-items: start;
}

.page-home .choice-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 1.35rem 0;
}

.page-home .choice {
  padding: 1rem 1.15rem;
  border: 1px solid var(--abyss-700);
  background: var(--home-card-bg);
}

.page-home .choice .card-title {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.page-home .choice-list {
  list-style: none;
  margin: 0.65rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.35rem;
  font-size: 0.9rem;
  color: var(--ink-300);
}

.page-home .choice-list li::before {
  content: "·";
  margin-right: 0.5rem;
  color: var(--coral-500);
}

/* ---------- 03 回访层 ---------- */
.page-home .trace-steps {
  list-style: none;
  margin: 1.5rem 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--abyss-700);
  border: 1px solid var(--abyss-700);
}

.page-home .trace-steps li {
  padding: 1.25rem 1.15rem;
  background: var(--abyss-950);
  font-size: 0.94rem;
  line-height: 1.7;
  color: var(--ink-300);
}

.page-home .trace-steps strong {
  display: block;
  margin-bottom: 0.45rem;
  font-size: 1rem;
  letter-spacing: 0.08em;
  color: var(--ink-050);
}

/* ---------- 04 覆盖与记录 ---------- */
.page-home .coverage-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--home-gap);
  align-items: start;
}

.page-home .stat-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 1.5rem 0;
  background: var(--abyss-700);
  border: 1px solid var(--abyss-700);
}

.page-home .stat-row > div {
  padding: 1rem 1.05rem;
  background: var(--abyss-900);
}

.page-home .stat-row dt {
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  color: var(--ink-300);
}

.page-home .stat-row dd {
  margin: 0.35rem 0 0;
  font-family: var(--font-mono);
  font-size: 1.55rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--ink-050);
}

.page-home .stat-row .stat-word {
  font-family: var(--font-sans);
  font-size: 1.15rem;
  letter-spacing: 0.14em;
  color: var(--celadon-400);
}

.page-home .coverage-list {
  padding: 0.85rem 1.1rem;
  border: 1px solid var(--abyss-700);
  background: var(--home-card-bg);
}

.page-home .coverage-list summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--ink-050);
}

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

.page-home .coverage-list summary::after {
  content: "＋";
  color: var(--coral-500);
  font-size: 1rem;
}

.page-home .coverage-list[open] summary::after {
  content: "－";
}

.page-home .coverage-list summary:focus-visible {
  outline: 2px solid var(--coral-500);
  outline-offset: 3px;
}

.page-home .zone-list {
  list-style: none;
  margin: 1rem 0 0.85rem;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-home .zone-list li {
  padding: 0.3rem 0.72rem;
  border: 1px solid var(--abyss-700);
  font-size: 0.84rem;
  letter-spacing: 0.1em;
  color: var(--ink-300);
}

.page-home .coverage-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.75rem;
  margin-top: 0.5rem;
}

.page-home .record-line {
  margin-top: clamp(1.25rem, 3vw, 2rem);
  padding-top: 1rem;
  border-top: var(--hairline);
  font-size: 0.88rem;
  line-height: 1.75;
}

/* ---------- 05 帮助摘要 ---------- */
.page-home .help-grid {
  display: grid;
  gap: 1.5rem;
}

.page-home .order-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.9rem;
}

.page-home .order-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 0.85rem;
  padding-bottom: 0.9rem;
  border-bottom: var(--hairline);
  font-size: 0.94rem;
  line-height: 1.7;
  color: var(--ink-300);
}

.page-home .order-steps .num {
  color: var(--coral-500);
  font-size: 0.78rem;
}

.page-home .order-steps strong {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.98rem;
  letter-spacing: 0.08em;
  color: var(--ink-050);
}

.page-home .help-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.75rem;
  margin: 0;
}

/* ---------- 桌面：非对称分屏与章节左缘注释 ---------- */
@media (min-width: 900px) {
  .page-home .hero-inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(2rem, 5vw, 4rem);
  }

  .page-home .entry-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-home .personal-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-home .coverage-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

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

  .page-home .stat-row {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-home .help-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: clamp(1.75rem, 4vw, 3rem);
  }

  .page-home .chapter-block .chapter-head {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: end;
    column-gap: clamp(1rem, 2.5vw, 2rem);
  }

  .page-home .chapter-block .chapter-index {
    grid-row: 1 / span 2;
  }

  .page-home .chapter-block .chapter-title {
    grid-column: 2;
  }

  .page-home .chapter-block .chapter-note {
    grid-column: 2;
  }
}

@media (min-width: 600px) {
  .page-home .choice-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1200px) {
  .page-home .chapter-spine {
    display: block;
    position: absolute;
    left: -2.6rem;
    top: 0.35rem;
    writing-mode: vertical-rl;
    font-size: 0.72rem;
    letter-spacing: 0.22em;
    color: var(--ink-300);
    opacity: 0.8;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .ripple-btn {
    transition: none;
  }

  .page-home .ripple-btn:hover,
  .page-home .ripple-btn:focus-visible {
    background-size: 0% 0%;
  }

  .page-home .text-link::after {
    transition: none;
  }

  .page-home .chapter-block .chapter-index {
    transition-delay: 0ms;
  }
}