.page-home {
  background: var(--ink);
  color: var(--paper);
}

.page-home .breadcrumbs {
  padding-top: 16px;
}

/* ---------- 首屏分屏 ---------- */

.page-home .home-hero {
  position: relative;
  padding: clamp(20px, 3vw, 40px) 0 var(--sec);
}

.page-home .hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  align-items: center;
}

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

.page-home h1 {
  font-size: clamp(36px, 8vw, 78px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 0 0 22px;
  max-width: 13ch;
}

.page-home .hero-lead {
  font-size: var(--fs-body);
  line-height: 1.78;
  color: var(--neon-soft);
  max-width: 36ch;
  margin: 0 0 30px;
}

.page-home .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: clamp(28px, 4vw, 44px);
}

.page-home .hero-actions .btn-signal {
  position: relative;
  transition: transform 180ms cubic-bezier(.2, .7, .3, 1), box-shadow 180ms ease;
}

.page-home .hero-actions .btn-signal::after {
  content: "↗";
  display: inline-block;
  margin-left: 10px;
  font-family: var(--font-mono);
  transition: transform 180ms ease;
}

.page-home .hero-actions .btn-signal:hover {
  transform: translate(6px, -6px);
  box-shadow: -8px 8px 0 var(--neon-deep);
}

.page-home .hero-actions .btn-signal:hover::after {
  transform: translate(4px, -4px);
}

.page-home .hero-stats {
  list-style: none;
  margin: 0;
  padding: 1px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-home .hero-stats li {
  background: var(--ink);
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-home .stat-num {
  font-size: var(--fs-h4);
  font-weight: 700;
  color: var(--neon);
  letter-spacing: 0.04em;
}

.page-home .stat-label {
  font-size: var(--fs-note);
  line-height: 1.6;
  color: var(--mist);
}

.page-home .hero-visual {
  position: relative;
  border: 2px solid var(--line);
  background: var(--ink-2);
  overflow: hidden;
  aspect-ratio: 4 / 5;
}

.page-home .hero-visual img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-home .hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(150deg, rgba(10, 26, 47, 0.78), rgba(10, 26, 47, 0.08) 58%, rgba(47, 224, 208, 0.22));
  pointer-events: none;
}

.page-home .ramp-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 2;
}

.page-home .ramp-svg path {
  fill: none;
  stroke: var(--neon);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-dasharray: 1200;
  stroke-dashoffset: 1200;
  animation: home-ramp-in 600ms ease-out forwards;
}

.page-home .ramp-svg .ramp-b {
  stroke: var(--neon-soft);
  opacity: 0.55;
  animation-delay: 120ms;
}

.page-home .ramp-svg .ramp-c {
  stroke: var(--pulse);
  opacity: 0.5;
  animation-delay: 220ms;
}

@keyframes home-ramp-in {
  to { stroke-dashoffset: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .ramp-svg path {
    animation: none;
    stroke-dashoffset: 0;
  }
  .page-home .hero-actions .btn-signal,
  .page-home .hero-actions .btn-signal::after {
    transition: none;
  }
  .page-home .tier-card {
    transition: none;
  }
}

/* ---------- 第二栏：旧版面板 ---------- */

.page-home .home-panel {
  background: var(--ink-2);
  border-top: 2px solid var(--line);
  border-bottom: 2px solid var(--line);
}

.page-home .panel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 54px);
  align-items: center;
}

.page-home .panel-copy h2 {
  font-size: var(--fs-h2);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0 0 18px;
  max-width: 18ch;
}

.page-home .panel-copy > p {
  font-size: var(--fs-body);
  line-height: 1.78;
  color: var(--mist);
  max-width: 38ch;
  margin: 0 0 24px;
}

.page-home .panel-points {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-home .panel-points li {
  position: relative;
  padding-left: 24px;
  font-size: var(--fs-body);
  line-height: 1.72;
  color: var(--paper);
  max-width: 40ch;
}

.page-home .panel-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 13px;
  width: 14px;
  height: 2px;
  background: var(--neon);
}

.page-home .panel-shot {
  margin: 0;
  border: 2px solid var(--neon);
  box-shadow: 6px 6px 0 rgba(47, 224, 208, 0.24);
  background: var(--ink);
}

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

.page-home .panel-shot figcaption {
  font-size: var(--fs-note);
  color: var(--mist);
  padding: 12px 14px;
  border-top: 2px solid var(--line);
  letter-spacing: 0.06em;
}

/* ---------- 比一比 + 下载 ---------- */

.page-home .home-compare {
  background: var(--paper);
  color: var(--ink);
}

.page-home .home-compare .section-head {
  border-bottom: 2px solid var(--ink);
}

.page-home .home-compare .section-head h2 {
  font-size: var(--fs-h2);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-home .home-compare .section-head .mono {
  color: var(--neon-deep);
}

.page-home .compare-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 3.5vw, 46px);
  margin-top: clamp(26px, 3.5vw, 40px);
}

.page-home .compare-visual {
  border: 2px solid var(--ink);
  box-shadow: 6px 6px 0 var(--neon);
  background: var(--ink-2);
}

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

.page-home .compare-lead {
  font-size: var(--fs-body);
  line-height: 1.78;
  color: rgba(10, 26, 47, 0.78);
  margin: 0 0 22px;
  max-width: 40ch;
}

.page-home .cat-list {
  list-style: none;
  margin: 0 0 30px;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-home .cat-list li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 12px 0 12px 16px;
  border-left: 4px solid var(--neon-deep);
  border-bottom: 1px solid rgba(10, 26, 47, 0.14);
}

.page-home .cat-list li:nth-child(2n) {
  border-left-color: var(--line);
}

.page-home .cat-name {
  font-size: var(--fs-h4);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-home .cat-note {
  font-size: var(--fs-small);
  line-height: 1.65;
  color: rgba(10, 26, 47, 0.62);
}

.page-home .download-note {
  background: var(--ink);
  color: var(--paper);
  border: 2px solid var(--ink);
  box-shadow: 6px 6px 0 var(--neon);
  padding: clamp(18px, 2.6vw, 28px);
}

.page-home .download-note .note-tag {
  margin: 0 0 12px;
  font-size: var(--fs-note);
  color: var(--neon);
  letter-spacing: 0.1em;
}

.page-home .download-note .note-text {
  margin: 0 0 22px;
  font-size: var(--fs-body);
  line-height: 1.75;
  color: rgba(244, 239, 230, 0.86);
  max-width: 38ch;
}

/* ---------- 四档速览 ---------- */

.page-home .home-tiers {
  background: var(--ink);
}

.page-home .home-tiers .section-head {
  border-bottom: 2px solid var(--line);
}

.page-home .home-tiers .section-head h2 {
  font-size: var(--fs-h2);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-home .tier-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin: clamp(26px, 3.5vw, 40px) 0 0;
}

.page-home .tier-card {
  --tier: var(--line);
  background: var(--ink-2);
  border: 2px solid var(--line);
  border-top: 6px solid var(--tier);
  padding: 20px 18px 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: transform 200ms ease, border-color 200ms ease, box-shadow 200ms ease;
}

.page-home .tier-card[data-tier="1"] { --tier: var(--tier-1); }
.page-home .tier-card[data-tier="2"] { --tier: var(--tier-2); }
.page-home .tier-card[data-tier="3"] { --tier: var(--tier-3); }
.page-home .tier-card[data-tier="4"] { --tier: var(--tier-4); }

.page-home .tier-card:hover {
  transform: translateY(-6px);
  border-color: var(--tier);
  box-shadow: 0 8px 0 rgba(47, 224, 208, 0.16);
}

.page-home .tier-code {
  margin: 0;
  font-size: var(--fs-note);
  letter-spacing: 0.12em;
  color: var(--tier);
}

.page-home .tier-name {
  margin: 0;
  font-size: var(--fs-h3);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.page-home .tier-rows {
  margin: 0;
  display: grid;
  gap: 9px;
}

.page-home .tier-rows > div {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 7px;
  border-bottom: 1px dashed var(--line);
}

.page-home .tier-rows dt {
  font-size: var(--fs-note);
  color: var(--mist);
}

.page-home .tier-rows dd {
  margin: 0;
  font-size: var(--fs-small);
  color: var(--paper);
  font-weight: 600;
  text-align: right;
}

.page-home .tier-fit {
  margin: 0;
  font-size: var(--fs-note);
  line-height: 1.7;
  color: var(--mist);
}

.page-home .tier-foot {
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: var(--fs-small);
  line-height: 1.8;
  color: var(--mist);
  max-width: 62ch;
}

.page-home .tier-foot a {
  color: var(--neon);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-home .tier-foot a:hover {
  color: var(--neon-soft);
}

/* ---------- 尾部信息带 ---------- */

.page-home .home-band {
  background: var(--ink-2);
  border-top: 2px solid var(--line);
  padding: 20px 0;
}

.page-home .band-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  align-items: center;
  justify-content: space-between;
}

.page-home .band-inner p {
  margin: 0;
  font-size: var(--fs-note);
  line-height: 1.6;
  color: var(--mist);
}

.page-home .band-inner a {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-home .band-inner a:hover {
  color: var(--neon-soft);
}

/* ---------- 断点 ---------- */

@media (min-width: 700px) {
  .page-home .hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-home .cat-list li {
    grid-template-columns: minmax(96px, auto) 1fr;
    align-items: baseline;
    gap: 4px 18px;
  }
}

@media (min-width: 900px) {
  .page-home .hero-grid {
    grid-template-columns: 45fr 55fr;
    align-items: stretch;
    gap: clamp(32px, 4vw, 60px);
  }

  .page-home .hero-copy {
    align-self: center;
  }

  .page-home .hero-visual {
    aspect-ratio: auto;
    height: clamp(440px, 64vh, 640px);
  }

  .page-home .compare-grid {
    grid-template-columns: 1.02fr 0.98fr;
    align-items: start;
  }

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

@media (min-width: 1024px) {
  .page-home .panel-grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-home .tier-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
</main>