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

/* ---------- 首屏 ---------- */
.page-home .hero {
  position: relative;
  padding: 36px 0 64px;
  overflow: hidden;
}

.page-home .hero::before {
  content: "";
  position: absolute;
  inset: -120px -12% auto -12%;
  height: 620px;
  background:
    radial-gradient(58% 68% at 80% 6%, rgba(31, 227, 210, 0.16), transparent 64%),
    radial-gradient(52% 62% at 10% 26%, rgba(169, 155, 255, 0.13), transparent 68%),
    linear-gradient(160deg, rgba(11, 58, 68, 0.55), transparent 72%);
  pointer-events: none;
  z-index: 0;
}

.page-home .hero__inner,
.page-home .hero__band {
  position: relative;
  z-index: 1;
}

.page-home .hero__inner {
  display: grid;
  gap: 36px;
}

.page-home .hero__eyebrow {
  margin: 0 0 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-home .hero__title {
  margin: 0 0 22px;
  font-family: var(--font-display);
  font-weight: 250;
  font-size: clamp(40px, 11vw, 118px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-home .hero__title em {
  display: block;
  font-style: normal;
  color: var(--cyan);
}

.page-home .hero__text {
  max-width: 48ch;
  margin: 0 0 28px;
  font-family: var(--font-text);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-home .hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.page-home .hero__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-home .hero__stack {
  display: grid;
  gap: 14px;
}

.page-home .path-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 22px 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  text-decoration: none;
  transition: transform 220ms var(--ease), border-color 220ms var(--ease);
}

.page-home .path-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  border-radius: var(--radius) var(--radius) 0 0;
  background: var(--border);
}

.page-home .path-card--query::before { background: var(--violet); }
.page-home .path-card--profile::before { background: var(--mint); }

.page-home .path-card:hover,
.page-home .path-card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--cyan);
}

.page-home .path-card__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-home .path-card__name {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 500;
  color: var(--text);
}

.page-home .path-card__desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-soft);
}

.page-home .hero__band {
  margin-top: 44px;
}

.page-home .hero__figure {
  margin: 0;
}

.page-home .hero__badge {
  margin: 16px 0 0;
}

/* ---------- 章节通用 ---------- */
.page-home .section {
  padding: 64px 0;
}

.page-home .section__lead {
  max-width: 62ch;
}

/* ---------- 服务目录 ---------- */
.page-home .catalogue__figure {
  margin: 32px 0 36px;
}

.page-home .catalogue__grid {
  gap: 16px;
}

.page-home .cat-card {
  position: relative;
  display: block;
  padding: 24px 22px 26px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  text-decoration: none;
  transition: transform 220ms var(--ease), border-color 220ms var(--ease);
}

.page-home .cat-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  border-radius: var(--radius) var(--radius) 0 0;
  background: var(--border);
}

.page-home .cat-card--query::before { background: var(--violet); }
.page-home .cat-card--profile::before { background: var(--mint); }

.page-home .cat-card:hover,
.page-home .cat-card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--cyan);
}

.page-home .cat-card__num {
  display: block;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-home .cat-card:hover .cat-card__num {
  color: var(--cyan);
  font-weight: 700;
}

.page-home .cat-card .card__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 500;
  color: var(--text);
}

.page-home .cat-card .card__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-soft);
}

/* ---------- 双主线 ---------- */
.page-home .tracks__grid {
  display: grid;
  gap: 20px;
  margin-bottom: 36px;
}

.page-home .track {
  position: relative;
  padding: 28px 24px 28px 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
}

.page-home .track::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
}

.page-home .track--query::before { background: var(--violet); }
.page-home .track--profile::before { background: var(--mint); }

.page-home .track__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-home .track--query .track__label { color: var(--violet); }
.page-home .track--profile .track__label { color: var(--mint); }

.page-home .track__title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 400;
  line-height: 1.4;
  color: var(--text);
}

.page-home .track__block {
  margin: 0 0 16px;
  padding-top: 14px;
  border-top: var(--home-line);
}

.page-home .track__block:last-child {
  margin-bottom: 0;
}

.page-home .track__block dt {
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-home .track__block dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-home .tracks__figure {
  margin: 0 0 36px;
}

.page-home .stat-row {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  border: var(--home-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--border);
}

.page-home .stat-row .stat {
  padding: 22px 20px;
  background: var(--surface);
}

.page-home .stat-row .stat__value {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 500;
  color: var(--cyan);
}

.page-home .stat-row .stat__label {
  display: block;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 手机访问 ---------- */
.page-home .mobile {
  position: relative;
}

.page-home .mobile__inner {
  display: grid;
  gap: 32px;
}

.page-home .mobile__text {
  max-width: 56ch;
  margin: 0 0 22px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-home .mobile__list {
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
}

.page-home .mobile__list li {
  position: relative;
  padding: 10px 0 10px 22px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-soft);
  border-bottom: var(--home-line);
}

.page-home .mobile__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
}

.page-home .mobile__figure {
  margin: 0;
}

/* ---------- 帮助文档 ---------- */
.page-home .docs {
  position: relative;
}

.page-home .docs::before {
  content: "";
  position: absolute;
  inset: 12% -8% auto auto;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(111, 227, 165, 0.12), transparent 68%);
  pointer-events: none;
}

.page-home .docs .layout {
  position: relative;
  display: grid;
  gap: 34px;
}

.page-home .doc-accordion .doc-group__heading {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-home .doc-group__trigger {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 18px 4px;
  border: 0;
  border-bottom: var(--home-line);
  background: transparent;
  color: inherit;
  text-align: left;
  cursor: pointer;
  transition: border-color 200ms var(--ease);
}

.page-home .doc-group__trigger:hover {
  border-color: var(--cyan);
}

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

.page-home .doc-group__name {
  flex: 1;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 400;
  color: var(--text);
}

.page-home .doc-group__count {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-home .accordion__item[data-open="true"] .doc-group__trigger {
  border-color: var(--cyan);
}

.page-home .accordion__item[data-open="true"] .doc-group__count {
  color: var(--cyan);
}

.page-home .doc-group .accordion__panel-inner p {
  margin: 0;
  padding: 14px 4px 18px 46px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-home .docs__side {
  align-self: start;
  padding: 26px 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(11, 58, 68, 0.5), var(--surface));
}

.page-home .docs__side .tag {
  display: inline-block;
  margin-bottom: 16px;
}

.page-home .docs__side-text {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-home .docs__side-list {
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
  border-top: var(--home-line);
}

.page-home .docs__side-list li {
  padding: 12px 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  border-bottom: var(--home-line);
}

/* ---------- 苹果版注册 ---------- */
.page-home .signup__steps {
  display: grid;
  gap: 1px;
  margin: 0 0 34px;
  padding: 0;
  list-style: none;
  border: var(--home-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--border);
}

.page-home .step {
  padding: 28px 24px;
  background: var(--surface);
}

.page-home .step__num {
  display: block;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--coral);
}

.page-home .step__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 400;
  color: var(--text);
}

.page-home .step__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-home .signup__after {
  padding: 28px 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(140deg, rgba(31, 227, 210, 0.08), var(--surface) 62%);
}

.page-home .signup__after-title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 400;
  color: var(--text);
}

.page-home .signup__after-list {
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
}

.page-home .signup__after-list li {
  position: relative;
  padding: 9px 0 9px 20px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-soft);
}

.page-home .signup__after-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}

/* ---------- 高频问题 ---------- */
.page-home .qa__heading {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-home .qa__trigger {
  display: block;
  width: 100%;
  padding: 22px 48px 22px 4px;
  border: 0;
  border-bottom: var(--home-line);
  background: transparent;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  position: relative;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-home .qa__trigger::after {
  content: "+";
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--muted);
  transition: color 200ms var(--ease);
}

.page-home .qa__trigger:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

.page-home .accordion__item[data-open="true"] .qa__trigger {
  color: var(--cyan);
  border-color: var(--cyan);
}

.page-home .accordion__item[data-open="true"] .qa__trigger::after {
  content: "–";
  color: var(--cyan);
}

.page-home .qa__item .accordion__panel-inner p {
  margin: 0;
  padding: 16px 4px 22px;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-home .qa__more {
  margin: 28px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-home .qa__link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 200ms var(--ease);
}

.page-home .qa__link:hover {
  border-color: var(--cyan);
}

/* ---------- 人工支持 ---------- */
.page-home .support__inner {
  display: grid;
  gap: 30px;
}

.page-home .support__text {
  max-width: 56ch;
  margin: 0 0 26px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-home .support__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: var(--home-line);
}

.page-home .support__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 18px;
  padding: 16px 0;
  border-bottom: var(--home-line);
}

.page-home .support__key {
  min-width: 88px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-home .support__val {
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 200ms var(--ease), color 200ms var(--ease);
}

.page-home .support__val:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

.page-home .support__card {
  align-self: start;
  padding: 30px 24px 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(165deg, rgba(255, 107, 74, 0.1), var(--surface) 58%);
}

.page-home .support__card-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-home .support__card-big {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 44px;
  font-weight: 500;
  line-height: 1;
  color: var(--coral);
}

.page-home .support__card-text {
  margin: 0 0 24px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-soft);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-home .hero {
    padding: 56px 0 84px;
  }

  .page-home .hero__stack {
    grid-template-columns: 1fr 1fr;
    gap: 18px;
  }

  .page-home .path-card:nth-child(2) { margin-top: 24px; }
  .page-home .path-card:nth-child(3) { margin-top: -10px; }

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

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

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

  .page-home .support__list li {
    flex-wrap: nowrap;
  }
}

@media (min-width: 1024px) {
  .page-home .hero {
    padding: 72px 0 96px;
  }

  .page-home .hero__inner {
    grid-template-columns: 6fr 5fr;
    gap: 64px;
    align-items: start;
  }

  .page-home .hero__stack {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    padding-top: 8px;
  }

  .page-home .hero__band {
    position: relative;
    margin-top: 72px;
  }

  .page-home .hero__badge {
    position: absolute;
    right: 24px;
    top: -18px;
    margin: 0;
  }

  .page-home .section {
    padding: 104px 0;
  }

  .page-home .catalogue__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-home .tracks__grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }

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

  .page-home .mobile__inner {
    grid-template-columns: 7fr 4fr;
    gap: 56px;
    align-items: center;
  }

  .page-home .mobile__figure {
    max-width: 380px;
    justify-self: end;
  }

  .page-home .docs .layout {
    grid-template-columns: 7.5fr 2.5fr;
    gap: 56px;
    align-items: start;
  }

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

  .page-home .signup__after {
    padding: 36px 34px;
  }

  .page-home .support__inner {
    grid-template-columns: 7fr 4fr;
    gap: 56px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .path-card,
  .page-home .cat-card,
  .page-home .doc-group__trigger,
  .page-home .qa__trigger {
    transition: none;
  }

  .page-home .path-card:hover,
  .page-home .cat-card:hover {
    transform: none;
  }
}