/* ================= page-home ================= */
.page-home {
  --hp-border: 2px solid var(--green-deep);
  --hp-pad: clamp(22px, 3vw, 44px);
  display: block;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-home h1,
.page-home h2,
.page-home h3 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.01em;
  line-height: 1.15;
  margin: 0;
}

.page-home p {
  margin: 0;
}

.page-home .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 首屏 ---------- */
.page-home .home-hero {
  padding: calc(var(--header-h) + clamp(20px, 3.4vw, 48px)) var(--gutter) clamp(40px, 6vw, 76px);
  background: var(--cream);
}

.page-home .hero-frame {
  position: relative;
  max-width: var(--shell-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  background: var(--cream);
  border: var(--hp-border);
  box-shadow: 8px 8px 0 var(--green-deep);
}

.page-home .hero-frame::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 11px;
  background-image: repeating-linear-gradient(90deg, var(--copper) 0 1px, transparent 1px 13px);
  opacity: 0.6;
  pointer-events: none;
  z-index: 3;
}

.page-home .hero-copy {
  display: flex;
  flex-direction: column;
  gap: clamp(16px, 2vw, 22px);
  padding: clamp(26px, 3.6vw, 46px);
  padding-top: clamp(34px, 4vw, 54px);
  border-bottom: var(--hp-border);
}

.page-home .hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--sage);
}

.page-home .hero-eyebrow .num {
  display: inline-block;
  padding: 2px 7px;
  border: 1.5px solid var(--copper);
  color: var(--copper);
  font-size: 11px;
}

.page-home h1 {
  font-size: clamp(34px, 6vw, 66px);
  color: var(--green-deep);
}

.page-home .hero-lede {
  max-width: 46ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--ink);
}

.page-home .hero-figure {
  margin: 0;
  position: relative;
  border-top: 0;
}

.page-home .hero-figure-media {
  height: 100%;
  min-height: 240px;
  border: 0;
  box-shadow: none;
  --figure-ratio: auto;
}

.page-home .hero-figure-media img {
  width: 100%;
  height: 100%;
  min-height: 240px;
  object-fit: cover;
  display: block;
}

.page-home .hero-figure figcaption {
  padding: 10px 16px;
  border-top: var(--hp-border);
  background: var(--paper);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--green-deep);
}

/* ---------- 首屏标签页 ---------- */
.page-home .hero-tabs {
  margin-top: auto;
}

.page-home .hero-tabs .tab-list {
  display: flex;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.page-home .hero-tabs .tab {
  min-height: 44px;
  padding: 10px 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  background: transparent;
  color: var(--green-deep);
  border: 1.5px solid var(--green-deep);
  cursor: pointer;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-home .hero-tabs .tab + .tab {
  border-left: 0;
}

.page-home .hero-tabs .tab[aria-selected="true"] {
  background: var(--green-deep);
  color: var(--copper-light);
}

.page-home .hero-tabs .tab:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 2px;
}

.page-home .hero-tabs .tab-panel {
  min-height: 210px;
}

.page-home .panel-note {
  font-size: 14px;
  line-height: 1.7;
  color: var(--sage);
  max-width: 52ch;
  margin-bottom: 26px;
}

.page-home .panel-foot {
  margin-top: 26px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--sage);
}

.page-home .panel-link {
  color: var(--copper);
  text-decoration: none;
  border-bottom: 1.5px solid var(--copper);
  padding-bottom: 1px;
}

.page-home .panel-link:hover,
.page-home .panel-link:focus-visible {
  color: var(--green-deep);
  border-color: var(--green-deep);
}

/* ---------- 刻度条 ---------- */
.page-home .ruler {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-home .ruler--order {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

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

.page-home .ruler-node {
  position: relative;
  min-height: 44px;
  padding: 30px 4px 8px;
  text-align: center;
  border-left: 1px solid var(--line);
  border-top: 2px solid var(--green-deep);
}

.page-home .ruler-node:last-child {
  border-right: 1px solid var(--line);
}

.page-home .ruler-pin {
  position: absolute;
  top: -8px;
  left: 50%;
  width: 14px;
  height: 14px;
  margin-left: -7px;
  background: var(--copper);
  border: 1.5px solid var(--green-deep);
  border-radius: 50%;
}

.page-home .ruler--care .ruler-pin {
  background: var(--green-deep);
  border-color: var(--copper);
}

.page-home .ruler-value {
  display: block;
  font-size: 20px;
  font-weight: 600;
  color: var(--green-deep);
  line-height: 1.1;
}

.page-home .ruler-unit {
  display: block;
  margin-top: 2px;
  font-size: 12px;
  color: var(--sage);
}

.page-home .ruler-pop {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  width: max-content;
  max-width: 190px;
  padding: 7px 10px;
  background: var(--green-deep);
  color: var(--cream);
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.5;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, -5px);
  transition: opacity 0.18s var(--ease), transform 0.18s var(--ease);
  z-index: 6;
}

.page-home .ruler-node:first-child .ruler-pop {
  left: 0;
  transform: translate(0, -5px);
}

.page-home .ruler-node:last-child .ruler-pop {
  left: auto;
  right: 0;
  transform: translate(0, -5px);
}

.page-home .ruler-node:hover .ruler-pop,
.page-home .ruler-node:focus-within .ruler-pop,
.page-home .ruler-node:focus .ruler-pop {
  opacity: 1;
}

.page-home .ruler-node:hover .ruler-pop,
.page-home .ruler-node:focus .ruler-pop {
  transform: translate(-50%, 0);
}

.page-home .ruler-node:first-child:hover .ruler-pop,
.page-home .ruler-node:first-child:focus .ruler-pop,
.page-home .ruler-node:last-child:hover .ruler-pop,
.page-home .ruler-node:last-child:focus .ruler-pop {
  transform: translate(0, 0);
}

.page-home .ruler-node:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: -2px;
}

/* ---------- 对照带 ---------- */
.page-home .home-axis {
  background: var(--paper);
  border-top: var(--hp-border);
  border-bottom: var(--hp-border);
  padding: clamp(36px, 5vw, 64px) var(--gutter);
}

.page-home .axis-inner {
  max-width: var(--shell-max);
  margin: 0 auto;
  display: grid;
  gap: 18px;
}

.page-home .axis-title {
  font-size: clamp(22px, 2.6vw, 30px);
  color: var(--green-deep);
}

.page-home .axis-note {
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

.page-home .axis-figure {
  margin-top: 8px;
  border: var(--hp-border);
  box-shadow: var(--shadow-hard-sm);
  background: var(--cream);
}

.page-home .axis-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 两条线入口 ---------- */
.page-home .home-track .track-grid {
  display: grid;
  gap: var(--gap);
  grid-template-columns: 1fr;
}

.page-home .track-side {
  display: flex;
  align-items: center;
  gap: 14px;
}

.page-home .track-no {
  font-size: clamp(52px, 7vw, 88px);
  line-height: 0.9;
  color: var(--copper);
  letter-spacing: -0.03em;
}

.page-home .track-main h2 {
  font-size: clamp(24px, 3.2vw, 38px);
  color: var(--green-deep);
  margin-bottom: 14px;
}

.page-home .track-lede {
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 24px;
}

.page-home .track-table {
  margin-bottom: 22px;
}

.page-home .track-foot {
  font-size: 14px;
  line-height: 1.7;
  color: var(--sage);
  margin-bottom: 24px;
}

.page-home .home-track .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 22px;
  font-family: var(--font-mono);
  font-size: 13px;
  text-decoration: none;
}

.page-home .btn-copper {
  background: var(--copper);
  color: var(--green-deep);
  border: 2px solid var(--green-deep);
  box-shadow: var(--shadow-hard-sm);
}

.page-home .btn-copper:hover,
.page-home .btn-copper:focus-visible {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--green-deep);
}

.page-home .btn-ghost {
  background: transparent;
  color: var(--cream);
  border: 2px solid var(--cream);
  box-shadow: var(--shadow-hard-sm);
}

.page-home .btn-ghost:hover,
.page-home .btn-ghost:focus-visible {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--copper-light);
}

/* 产品线深色块 */
.page-home .track--green {
  background: var(--green-deep);
  color: var(--cream);
  border-top: var(--hp-border);
  border-bottom: var(--hp-border);
}

.page-home .track--green .track-no {
  color: var(--paper);
}

.page-home .track--green .track-main h2 {
  color: var(--cream);
}

.page-home .track--green .track-lede {
  color: var(--paper);
}

.page-home .tag-on-dark {
  border: 1.5px solid var(--copper-light);
  color: var(--copper-light);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  white-space: nowrap;
}

.page-home .device-list {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  border-top: 1px solid rgba(244, 239, 228, 0.28);
}

.page-home .device-item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(244, 239, 228, 0.28);
}

.page-home .device-code {
  font-size: 22px;
  font-weight: 700;
  color: var(--copper-light);
  line-height: 1.3;
}

.page-home .device-body h3 {
  font-size: 17px;
  color: var(--cream);
  margin-bottom: 6px;
}

.page-home .device-body p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
}

.page-home .device-body .num {
  color: var(--copper-light);
}

.page-home .track--green .figure {
  margin: 0;
}

.page-home .track--green .figure-media {
  border: 2px solid var(--copper-light);
  box-shadow: none;
}

.page-home .track--green .figure-caption {
  padding: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--paper);
}

/* ---------- 目录索引 ---------- */
.page-home .home-index {
  background: var(--cream);
}

.page-home .index-layout {
  display: grid;
  gap: var(--gap);
  grid-template-columns: 1fr;
}

.page-home .index-figure {
  margin: 0;
  align-self: start;
}

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

.page-home .index-link {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  grid-template-rows: auto auto;
  column-gap: 14px;
  min-height: 44px;
  padding: 16px 10px;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: var(--ink);
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-home .index-link:hover,
.page-home .index-link:focus-visible {
  background: var(--paper);
  border-bottom-color: var(--green-deep);
  outline: none;
}

.page-home .index-no {
  grid-column: 1;
  grid-row: 1 / span 2;
  font-size: 20px;
  font-weight: 700;
  color: var(--copper);
  align-self: start;
  line-height: 1.2;
}

.page-home .index-title {
  grid-column: 2;
  grid-row: 1;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  color: var(--green-deep);
  margin-bottom: 4px;
}

.page-home .index-desc {
  grid-column: 2;
  grid-row: 2;
  font-size: 14px;
  line-height: 1.7;
  color: var(--sage);
}

.page-home .index-aside {
  margin-top: 22px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--sage);
}

.page-home .index-aside a {
  color: var(--green-deep);
  border-bottom: 1.5px solid var(--copper);
  text-decoration: none;
}

.page-home .index-aside a:hover,
.page-home .index-aside a:focus-visible {
  color: var(--copper);
}

/* ---------- 联络带 ---------- */
.page-home .home-contact {
  border-top: var(--hp-border);
}

.page-home .contact-layout {
  display: grid;
  gap: var(--gap);
  grid-template-columns: 1fr;
}

.page-home .contact-lead h2 {
  font-size: clamp(24px, 3vw, 36px);
  color: var(--cream);
  margin: 16px 0 14px;
}

.page-home .contact-lead p {
  max-width: 48ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper);
}

.page-home .contact-list {
  margin: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid rgba(244, 239, 228, 0.3);
}

.page-home .contact-row {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(244, 239, 228, 0.3);
}

.page-home .contact-row dt {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--copper-light);
}

.page-home .contact-row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--cream);
  word-break: break-word;
}

.page-home .contact-row dd a {
  color: var(--cream);
  border-bottom: 1.5px solid var(--copper);
  text-decoration: none;
}

.page-home .contact-row dd a:hover,
.page-home .contact-row dd a:focus-visible {
  color: var(--copper-light);
}

.page-home .contact-note {
  margin-top: 22px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--sage);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 860px) {
  .page-home .hero-frame {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 0.68fr);
  }

  .page-home .hero-copy {
    border-bottom: 0;
    border-right: var(--hp-border);
  }

  .page-home .hero-figure {
    display: flex;
    flex-direction: column;
  }

  .page-home .hero-figure-media {
    flex: 1;
  }

  .page-home .track-grid {
    grid-template-columns: 116px minmax(0, 1fr);
  }

  .page-home .track-grid--green {
    grid-template-columns: 116px minmax(0, 1fr) minmax(0, 0.82fr);
    align-items: start;
  }

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

  .page-home .index-layout {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    align-items: start;
  }

  .page-home .contact-layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

@media (min-width: 1100px) {
  .page-home .index-link {
    grid-template-columns: 74px minmax(0, 1fr);
    padding: 18px 14px;
  }

  .page-home .index-no {
    font-size: 22px;
  }
}

/* ---------- 窄屏收敛 ---------- */
@media (max-width: 480px) {
  .page-home .hero-frame {
    box-shadow: 4px 4px 0 var(--green-deep);
  }

  .page-home .ruler-value {
    font-size: 16px;
  }

  .page-home .ruler-node {
    padding: 26px 2px 6px;
  }

  .page-home .ruler-pop {
    max-width: 150px;
    font-size: 10.5px;
  }

  .page-home .contact-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .page-home .device-item {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 10px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-home .hero-tabs .tab,
  .page-home .ruler-pop,
  .page-home .index-link {
    transition: none;
  }

  .page-home .btn-copper:hover,
  .page-home .btn-ghost:hover,
  .page-home .btn-copper:focus-visible,
  .page-home .btn-ghost:focus-visible {
    transform: none;
  }
}
</main>