.page-home {
  --home-line: rgba(11, 27, 43, 0.16);
  --home-line-soft: rgba(11, 27, 43, 0.09);
  --home-gap: clamp(20px, 4vw, 42px);
  --home-pad: clamp(18px, 3.2vw, 34px);
  background: var(--paper);
  color: var(--ink);
  padding-bottom: clamp(36px, 6vw, 72px);
}

.page-home .crumbs {
  padding-top: clamp(12px, 2vw, 20px);
  font-size: 13px;
  color: var(--mist);
}
.page-home .crumbs__item a {
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--home-line);
}
.page-home .crumbs__item a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 封面首屏 ---------- */
.page-home .cover {
  padding-top: clamp(18px, 3vw, 34px);
}
.page-home .cover__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--home-gap);
}
.page-home .cover h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(34px, 7.2vw, 62px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 12px 0 0;
  max-width: 14ch;
}
.page-home .cover .lede {
  font-family: var(--font-serif);
  font-size: clamp(16px, 1.9vw, 18px);
  line-height: 1.9;
  color: var(--ink-soft);
  margin: clamp(14px, 2.4vw, 20px) 0 0;
  max-width: 46ch;
}

.page-home .paths {
  list-style: none;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-home .paths__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "num link"
    "num note";
  gap: 2px 14px;
  padding: 12px 16px;
  background: var(--card);
  border: 1px solid var(--home-line);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s var(--ease);
}
.page-home .paths__item:hover {
  border-color: var(--cyan);
}
.page-home .paths__num {
  grid-area: num;
  align-self: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}
.page-home .paths__link {
  grid-area: link;
  color: var(--ink);
  font-weight: 700;
  font-size: 16px;
  text-decoration: none;
}
.page-home .paths__link:hover {
  color: var(--cyan);
}
.page-home .paths__note {
  grid-area: note;
  color: var(--mist);
  font-size: 13px;
  line-height: 1.65;
}

.page-home .cover__side {
  display: grid;
  gap: 14px;
  align-content: start;
}
.page-home .cover__figure {
  position: relative;
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--home-line);
  background: var(--ink-soft);
}
.page-home .cover__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.page-home .cover__dial {
  position: absolute;
  right: 12px;
  bottom: 12px;
  width: 72px;
  height: 72px;
  padding: 8px;
  box-sizing: border-box;
  color: var(--cyan-soft);
  background: rgba(11, 27, 43, 0.6);
  border-radius: 50%;
}
.page-home .cover__needle {
  transform-box: view-box;
  transform-origin: 60px 60px;
  animation: home-needle 26s linear infinite;
}
@keyframes home-needle {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.page-home .cover__index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--home-line);
  border: 1px solid var(--home-line);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.page-home .cover__index li {
  background: var(--card);
  padding: 12px 14px;
  display: grid;
  gap: 3px;
}
.page-home .cover__k {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mist);
}
.page-home .cover__v {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  line-height: 1.5;
}

/* ---------- 章节通用 ---------- */
.page-home .band {
  padding-top: clamp(34px, 6vw, 68px);
}
.page-home .band__head {
  display: grid;
  gap: 8px;
  max-width: 64ch;
  margin-bottom: clamp(16px, 2.6vw, 26px);
}
.page-home .band__head h2 {
  font-family: var(--font-display);
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 0;
}
.page-home .band__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------- 双通道检索 ---------- */
.page-home .retrieval__panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  background: var(--card);
  border: 1px solid var(--home-line);
  border-radius: var(--radius);
  overflow: hidden;
}
.page-home .retrieval__side {
  background: var(--paper-2);
  padding: var(--home-pad);
  display: grid;
  gap: 12px;
  align-content: start;
}
.page-home .retrieval__map {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--home-line);
}
.page-home .retrieval__switchnote {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}
.page-home .retrieval__main {
  padding: var(--home-pad);
  display: grid;
  gap: 14px;
  align-content: start;
}
.page-home .retrieval__hint {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--mist);
}
.page-home .retrieval__all {
  justify-self: start;
  margin-top: 4px;
}

.page-home .tabs__list {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  margin-top: 4px;
}
.page-home .tabs__tab {
  flex: 0 0 auto;
  min-height: 44px;
  padding: 10px 16px;
  border: 1px solid var(--home-line);
  border-radius: var(--radius-pill);
  background: var(--card);
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  white-space: nowrap;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease), color 0.2s var(--ease);
}
.page-home .tabs__tab:hover {
  border-color: var(--cyan-soft);
}
.page-home .tabs__tab[aria-selected="true"] {
  border-color: var(--cyan);
  background: var(--cyan-soft);
  color: var(--ink);
  font-weight: 700;
}
.page-home .tabs__tab:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-home .tabs__panel {
  display: grid;
  gap: 12px;
}
.page-home .tabs__panel[hidden] {
  display: none;
}

.page-home .vendor-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}
.page-home .vendor {
  display: grid;
  gap: 6px;
  padding: 14px;
  background: var(--card);
  border: 1px solid var(--home-line);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s var(--ease);
}
.page-home .vendor:hover {
  border-color: var(--cyan-soft);
}
.page-home .vendor__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.page-home .vendor__code {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--mist);
}
.page-home .vendor__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.45;
}
.page-home .vendor .card__meta {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--mist);
}
.page-home .vendor__more summary {
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 32px;
  padding: 4px 0;
  font-size: 12.5px;
  color: var(--cyan);
  cursor: pointer;
}
.page-home .vendor__more summary::-webkit-details-marker {
  display: none;
}
.page-home .vendor__more summary::before {
  content: "+";
  font-family: var(--font-mono);
}
.page-home .vendor__more[open] summary::before {
  content: "−";
}
.page-home .vendor__more summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}
.page-home .vendor__more p {
  margin: 2px 0 0;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* ---------- 横向索引带 ---------- */
.page-home .indexband {
  margin-top: clamp(30px, 5vw, 56px);
  padding: clamp(18px, 3vw, 28px) 0;
  background: var(--paper-2);
  border-top: 1px solid var(--home-line);
  border-bottom: 1px solid var(--home-line);
}
.page-home .indexband__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 18px;
  margin-bottom: 14px;
}
.page-home .indexband__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(16px, 2.2vw, 19px);
  line-height: 1.4;
}
.page-home .indexband__jump {
  margin: 0;
  font-size: 13px;
  color: var(--mist);
}
.page-home .indexband__jump a {
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--home-line);
}
.page-home .indexband__jump a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}
.page-home .indexband__list {
  list-style: none;
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 0 0 6px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}
.page-home .indexband__item {
  flex: 0 0 auto;
  scroll-snap-align: start;
}
.page-home .indexband__link {
  display: grid;
  gap: 2px;
  min-width: 138px;
  padding: 10px 14px;
  background: var(--card);
  border: 1px solid var(--home-line);
  border-radius: var(--radius-sm);
  color: var(--ink);
  text-decoration: none;
  transition: border-color 0.2s var(--ease);
}
.page-home .indexband__link:hover {
  border-color: var(--cyan);
}
.page-home .indexband__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--orange);
}
.page-home .indexband__name {
  font-size: 14px;
  font-weight: 700;
}
.page-home .indexband__count {
  font-size: 12px;
  color: var(--mist);
  font-variant-numeric: tabular-nums;
}

/* ---------- 四步进站 ---------- */
.page-home .steps__wrap {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4vw, 48px);
  background: var(--ink-soft);
  color: var(--paper);
  border-radius: var(--radius);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 calc(100% - 34px));
}
.page-home .steps__wrap::before {
  content: "";
  position: absolute;
  top: 0;
  left: clamp(24px, 4vw, 48px);
  width: 72px;
  height: 3px;
  background: var(--orange);
}
.page-home .steps__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.16;
}
.page-home .steps__inner {
  position: relative;
  display: grid;
  gap: 18px;
}
.page-home .steps__head {
  margin-bottom: 0;
}
.page-home .steps__head .band__note {
  color: rgba(244, 239, 230, 0.8);
}
.page-home .steps__bar {
  --fill: 76%;
  height: 4px;
  border-radius: var(--radius-pill);
  background: rgba(244, 239, 230, 0.18);
  overflow: hidden;
}
.page-home .steps__bar span {
  display: block;
  height: 100%;
  width: var(--fill);
  border-radius: inherit;
  background: linear-gradient(90deg, var(--cyan), var(--amber));
}
.page-home .stepline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}
.page-home .stepline__item {
  background: rgba(244, 239, 230, 0.07);
  border: 1px solid var(--line-light);
  border-radius: var(--radius-sm);
}
.page-home .stepline__item[open] {
  background: rgba(159, 227, 229, 0.16);
  border-color: var(--cyan-soft);
}
.page-home .stepline__item summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 12px 14px;
  cursor: pointer;
}
.page-home .stepline__item summary::-webkit-details-marker {
  display: none;
}
.page-home .stepline__item summary:focus-visible {
  outline: 2px solid var(--cyan-soft);
  outline-offset: 2px;
}
.page-home .stepline__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
}
.page-home .stepline__name {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
}
.page-home .stepline__item p {
  margin: 0;
  padding: 0 14px 14px;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(244, 239, 230, 0.82);
}
.page-home .steps__cta {
  justify-self: start;
}

/* ---------- 更新节奏 ---------- */
.page-home .rhythm__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--home-gap);
  align-items: center;
}
.page-home .rhythm__figure {
  margin: 0;
  border: 1px solid var(--home-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--paper-2);
}
.page-home .rhythm__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}
.page-home .rhythm__rows {
  display: grid;
}
.page-home .rhythm__row {
  display: grid;
  gap: 4px;
  padding: 16px 0;
  border-top: 1px solid var(--home-line);
}
.page-home .rhythm__row:last-child {
  border-bottom: 1px solid var(--home-line);
}
.page-home .rhythm__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}
.page-home .rhythm__row h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 17px;
  line-height: 1.5;
}
.page-home .rhythm__row p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}
.page-home .rhythm__row .text-link {
  justify-self: start;
  font-size: 13.5px;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-soft);
  padding-bottom: 1px;
}
.page-home .rhythm__row .text-link:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 联系面板 ---------- */
.page-home .contactbox {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 32px);
  padding: clamp(22px, 4vw, 44px);
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius);
}
.page-home .contactbox h2 {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 3vw, 28px);
  line-height: 1.35;
}
.page-home .contactbox__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}
.page-home .contactbox__list a {
  color: var(--amber);
  font-weight: 700;
  font-size: 15px;
  text-decoration: none;
  border-bottom: 1px solid rgba(239, 164, 58, 0.45);
}
.page-home .contactbox__list a:hover {
  border-bottom-color: var(--amber);
}
.page-home .contactbox__list p {
  margin: 5px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(244, 239, 230, 0.75);
}
.page-home .contactbox__meta {
  display: grid;
  gap: 6px;
  padding-top: 14px;
  border-top: 1px solid var(--line-light);
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(244, 239, 230, 0.82);
}
.page-home .contactbox__meta p {
  margin: 0;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-home .vendor-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-home .cover__index {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-home .stepline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }
}

@media (min-width: 960px) {
  .page-home .cover__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(28px, 4vw, 60px);
    align-items: start;
  }
  .page-home .retrieval__panel {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  }
  .page-home .tabs__list {
    flex-direction: column;
    overflow: visible;
  }
  .page-home .tabs__tab {
    border-radius: var(--radius-sm);
    text-align: left;
    white-space: normal;
  }
  .page-home .stepline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-home .rhythm__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: center;
  }
  .page-home .contactbox {
    grid-template-columns: minmax(0, 4fr) minmax(0, 5fr) minmax(0, 3fr);
    align-items: start;
  }
  .page-home .contactbox__meta {
    border-top: 0;
    border-left: 1px solid var(--line-light);
    padding-top: 0;
    padding-left: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .cover__needle {
    animation: none;
  }
  .page-home .paths__item,
  .page-home .tabs__tab,
  .page-home .vendor,
  .page-home .indexband__link {
    transition: none;
  }
}