.page-home {
  --home-gap: clamp(0.75rem, 1.6vw, 1.15rem);
  --home-pad: max(0.9rem, calc((100% - var(--shell)) / 2));
}

/* ---------- 首屏 ---------- */
.page-home .home-hero {
  position: relative;
  padding-block: clamp(1.5rem, 4vw, 3rem) clamp(2rem, 5vw, 3.6rem);
  overflow: hidden;
}

.page-home .home-hero::before {
  content: "";
  position: absolute;
  inset: -18% -20% auto auto;
  width: 46vw;
  height: 46vw;
  max-width: 620px;
  max-height: 620px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 229, 212, 0.2), transparent 66%);
  pointer-events: none;
}

.page-home .home-hero__title {
  margin: 0.6rem 0 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(1.85rem, 6.4vw, 4rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper);
  max-width: 20ch;
}

.page-home .home-hero__title em {
  font-style: normal;
  background: var(--pulse);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-home .home-hero__lead {
  max-width: 60ch;
  margin-top: 1.05rem;
  color: var(--signal);
  font-size: clamp(0.98rem, 1.5vw, 1.08rem);
  line-height: 1.9;
}

/* ---------- 拼贴首屏 ---------- */
.page-home .home-collage {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--home-gap);
  margin-top: clamp(1.5rem, 4vw, 2.6rem);
}

.page-home .tile {
  --tilt: 0deg;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: clamp(1.05rem, 2.4vw, 1.8rem);
  border: 1px solid var(--track);
  border-radius: var(--radius);
  background: var(--panel);
  transform: rotate(var(--tilt));
  transition: transform 0.32s var(--ease), border-color 0.32s var(--ease), box-shadow 0.32s var(--ease);
}

.page-home .tile:hover,
.page-home .tile:focus-within {
  transform: rotate(0deg) translateY(-4px);
  border-color: var(--cyan);
  box-shadow: 0 20px 44px -26px rgba(0, 229, 212, 0.6);
}

.page-home .tile--auth {
  background:
    radial-gradient(125% 105% at 100% 0%, rgba(139, 92, 246, 0.24), transparent 60%),
    var(--panel);
  border-color: rgba(0, 229, 212, 0.42);
  animation: home-breathe 2.4s ease-in-out infinite;
}

@keyframes home-breathe {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 229, 212, 0.26); }
  50% { box-shadow: 0 0 0 7px rgba(0, 229, 212, 0); }
}

.page-home .tile--android {
  background:
    radial-gradient(110% 90% at 0% 100%, rgba(0, 229, 212, 0.16), transparent 62%),
    var(--panel);
}

.page-home .tile--zones {
  background: linear-gradient(150deg, rgba(27, 31, 59, 0.9), rgba(16, 16, 25, 0.95));
}

.page-home .tile--records {
  background: linear-gradient(210deg, rgba(255, 233, 199, 0.07), rgba(16, 16, 25, 0.95));
}

.page-home .tile__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-home .tile__title {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(1.2rem, 3.4vw, 1.75rem);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-home .tile__text {
  margin: 0;
  color: var(--signal);
  font-size: 0.94rem;
  line-height: 1.85;
}

.page-home .tile__meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 0.7rem 1rem;
  margin: 0.2rem 0 0;
  padding-top: 0.9rem;
  border-top: 1px solid var(--track);
}

.page-home .tile__meta-item dt {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--signal);
}

.page-home .tile__meta-item dd {
  margin: 0.22rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--paper);
}

.page-home .tile__link {
  align-self: flex-start;
  margin-top: auto;
  padding-top: 0.4rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 212, 0.4);
  transition: border-color 0.28s var(--ease), color 0.28s var(--ease);
}

.page-home .tile__link::after {
  content: " →";
  font-family: var(--font-mono);
}

.page-home .tile__link:hover {
  color: var(--paper);
  border-color: var(--paper);
}

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

/* ---------- 升级变化 ---------- */
.page-home .upgrade-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--home-gap);
  margin-top: clamp(1.4rem, 3vw, 2.2rem);
}

.page-home .upgrade-card {
  position: relative;
  padding: 1.4rem 1.25rem 1.4rem 1.6rem;
  border: 1px solid var(--track);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(27, 31, 59, 0.82), rgba(16, 16, 25, 0.94));
  overflow: hidden;
  transition: transform 0.32s var(--ease), border-color 0.32s var(--ease);
}

.page-home .upgrade-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--pulse);
  opacity: 0.85;
}

.page-home .upgrade-card:hover {
  transform: translateY(-4px);
  border-color: rgba(139, 92, 246, 0.7);
}

.page-home .upgrade-card__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  color: var(--violet);
}

.page-home .upgrade-card__title {
  margin: 0.55rem 0 0;
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--paper);
  letter-spacing: 0.01em;
}

.page-home .upgrade-card__text {
  margin: 0.6rem 0 0;
  color: var(--signal);
  font-size: 0.93rem;
  line-height: 1.85;
}

/* ---------- 厂商专区 ---------- */
.page-home .zone-groups {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(0.9rem, 2vw, 1.4rem);
  margin-top: clamp(1.4rem, 3vw, 2rem);
}

.page-home .zone-group__title {
  margin: 0 0 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--violet);
  text-transform: uppercase;
}

.page-home .zone-group__list {
  display: grid;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .zone {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.72rem 0.85rem;
  border: 1px solid var(--track);
  border-radius: var(--radius-s);
  background: var(--panel);
  transition: border-color 0.28s var(--ease), transform 0.28s var(--ease), background 0.28s var(--ease);
}

.page-home .zone:hover {
  transform: translateY(-3px);
  border-color: var(--cyan);
  background: rgba(0, 229, 212, 0.06);
}

.page-home .zone__icon {
  flex: none;
  width: 20px;
  height: 20px;
  color: var(--track);
  transition: color 0.28s var(--ease);
}

.page-home .zone:hover .zone__icon {
  color: var(--cyan);
}

.page-home .zone__label {
  font-size: 0.9rem;
  color: var(--paper);
  letter-spacing: 0.02em;
}

.page-home .zone-foot {
  margin: 1.5rem 0 0;
  color: var(--signal);
  font-size: 0.94rem;
  line-height: 1.9;
}

.page-home .zone-foot__link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 212, 0.4);
}

.page-home .zone-foot__link:hover {
  color: var(--paper);
  border-color: var(--paper);
}

/* ---------- 记录回看 ---------- */
.page-home .home-record-figure {
  margin-top: clamp(1.2rem, 3vw, 1.9rem);
}

.page-home .home-band {
  margin-top: clamp(1rem, 2.4vw, 1.6rem);
}

.page-home .home-band__track {
  display: flex;
  gap: var(--home-gap);
  padding-inline: var(--home-pad);
  padding-block: 0.35rem 1rem;
}

.page-home .record-card {
  flex: 0 0 min(78vw, 300px);
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.2rem 1.1rem;
  border: 1px solid var(--track);
  border-radius: var(--radius);
  background: var(--panel);
  transition: border-color 0.28s var(--ease), transform 0.28s var(--ease);
}

.page-home .record-card:hover {
  transform: translateY(-4px);
  border-color: var(--violet);
}

.page-home .record-card--link {
  background: linear-gradient(160deg, rgba(255, 233, 199, 0.08), rgba(16, 16, 25, 0.95));
}

.page-home .record-card__idx {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-home .record-card--link .record-card__idx {
  color: var(--alert);
}

.page-home .record-card__title {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--paper);
}

.page-home .record-card__text {
  margin: 0;
  color: var(--signal);
  font-size: 0.9rem;
  line-height: 1.8;
}

.page-home .record-card__link {
  margin-top: auto;
  padding-top: 0.3rem;
  font-size: 0.88rem;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 212, 0.4);
}

.page-home .record-card__link:hover {
  color: var(--paper);
  border-color: var(--paper);
}

/* ---------- 专栏笔记 ---------- */
.page-home .notes-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--home-gap);
  margin-top: clamp(1.4rem, 3vw, 2rem);
}

.page-home .note-feature {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: clamp(1rem, 2.4vw, 1.6rem);
  border: 1px solid var(--track);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(27, 31, 59, 0.85), rgba(16, 16, 25, 0.95));
  transition: border-color 0.32s var(--ease), transform 0.32s var(--ease);
}

.page-home .note-feature:hover {
  transform: translateY(-4px);
  border-color: var(--cyan);
}

.page-home .note-feature__media {
  margin: 0;
}

.page-home .note-feature__tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--warm);
}

.page-home .note-feature__title {
  margin: 0;
  font-size: clamp(1.15rem, 2.8vw, 1.5rem);
  font-weight: 900;
  line-height: 1.3;
  color: var(--paper);
}

.page-home .note-feature__text {
  margin: 0;
  color: var(--signal);
  font-size: 0.94rem;
  line-height: 1.88;
}

.page-home .note-feature__link {
  align-self: flex-start;
  margin-top: auto;
  font-size: 0.92rem;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 212, 0.4);
}

.page-home .note-feature__link:hover {
  color: var(--paper);
  border-color: var(--paper);
}

.page-home .note-card {
  padding: 1.15rem 1.1rem;
  border: 1px solid var(--track);
  border-left: 3px solid var(--violet);
  border-radius: var(--radius-s);
  background: var(--panel);
  transition: border-color 0.28s var(--ease), transform 0.28s var(--ease);
}

.page-home .note-card:hover {
  transform: translateY(-3px);
  border-color: var(--cyan);
  border-left-color: var(--cyan);
}

.page-home .note-card__title {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--paper);
}

.page-home .note-card__text {
  margin: 0.55rem 0 0;
  color: var(--signal);
  font-size: 0.9rem;
  line-height: 1.82;
}

/* ---------- 五步上手 ---------- */
.page-home .steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: clamp(1.4rem, 3vw, 2rem) 0 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.page-home .step {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 0.9rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--track);
}

.page-home .step:first-child {
  border-top: 1px solid var(--track);
}

.page-home .step__num {
  font-family: var(--font-mono);
  font-size: 1rem;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-home .step__title {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--paper);
}

.page-home .step__text {
  margin: 0.35rem 0 0;
  color: var(--signal);
  font-size: 0.9rem;
  line-height: 1.8;
}

/* ---------- 信任收束 ---------- */
.page-home .trust {
  position: relative;
  border: 1px solid var(--track);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink);
}

.page-home .trust__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.22;
  filter: saturate(0.85);
  pointer-events: none;
}

.page-home .trust__inner {
  position: relative;
  z-index: 1;
  padding: clamp(1.4rem, 4vw, 2.8rem);
  background: linear-gradient(120deg, rgba(7, 7, 12, 0.94) 42%, rgba(7, 7, 12, 0.72) 100%);
}

.page-home .trust__title {
  margin: 0.5rem 0 0;
  font-size: clamp(1.35rem, 3.6vw, 2.1rem);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--paper);
  max-width: 22ch;
}

.page-home .trust__text {
  margin: 0.9rem 0 0;
  max-width: 62ch;
  color: var(--signal);
  font-size: 0.94rem;
  line-height: 1.92;
}

.page-home .trust__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.9rem 1.2rem;
  margin: 1.5rem 0 0;
  padding-top: 1.3rem;
  border-top: 1px solid var(--track);
}

.page-home .trust__stat dt {
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--signal);
}

.page-home .trust__stat dd {
  margin: 0.3rem 0 0;
  font-size: 0.92rem;
  color: var(--paper);
}

.page-home .trust__num {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: -0.01em;
}

.page-home .trust__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.9rem 1.4rem;
  margin-top: 1.7rem;
}

.page-home .trust__side {
  font-size: 0.9rem;
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid var(--track);
  transition: color 0.28s var(--ease), border-color 0.28s var(--ease);
}

.page-home .trust__side:hover {
  color: var(--paper);
  border-color: var(--paper);
}

/* ---------- 焦点可见性 ---------- */
.page-home a:focus-visible,
.page-home .tile:focus-within {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 平板 ---------- */
@media (min-width: 680px) {
  .page-home .zone-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .page-home .note-feature {
    grid-column: 1 / -1;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-home .home-collage {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .page-home .tile--auth {
    grid-column: 1 / span 7;
    grid-row: 1 / span 2;
  }

  .page-home .tile--android {
    grid-column: 8 / span 5;
    grid-row: 1 / span 2;
    --tilt: -0.7deg;
  }

  .page-home .tile--zones {
    grid-column: 1 / span 5;
    --tilt: 0.5deg;
  }

  .page-home .tile--records {
    grid-column: 6 / span 7;
    --tilt: -0.4deg;
  }

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

  .page-home .upgrade-card:nth-child(2) {
    transform: translateY(26px);
  }

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

  .page-home .notes-grid {
    grid-template-columns: 1.2fr 1fr;
    grid-template-rows: auto auto;
    align-items: start;
  }

  .page-home .note-feature {
    grid-column: 1;
    grid-row: 1 / span 2;
  }

  .page-home .note-card:nth-of-type(2) {
    grid-column: 2;
    grid-row: 1;
  }

  .page-home .note-card:nth-of-type(3) {
    grid-column: 2;
    grid-row: 2;
    transform: translateY(14px);
  }

  .page-home .steps {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: var(--home-gap);
  }

  .page-home .step {
    grid-template-columns: 1fr;
    gap: 0.5rem;
    padding: 0.95rem 0 0;
    border-top: 2px solid var(--track);
    border-bottom: none;
  }

  .page-home .step:first-child {
    border-top: 2px solid var(--track);
  }

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

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-home .tile,
  .page-home .upgrade-card,
  .page-home .zone,
  .page-home .record-card,
  .page-home .note-feature,
  .page-home .note-card {
    animation: none;
    transition: none;
    transform: none;
  }

  .page-home .tile--auth {
    animation: none;
  }
}
</main>