/* ===== 首页专属样式 · 作用域 .page-home ===== */
.page-home {
  --cut: 16px;
  --hair: rgba(26, 26, 26, 0.14);
  --hair-strong: rgba(26, 26, 26, 0.3);
  --night-hair: rgba(247, 245, 240, 0.18);
  background: var(--jade);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--fs-16);
  line-height: 1.8;
  overflow-x: clip;
}

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

.page-home h2,
.page-home h3 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.01em;
  margin: 0;
}

.page-home h2 {
  font-size: clamp(1.6rem, 4.4vw, 2.75rem);
}

.page-home h3 {
  font-size: clamp(1.05rem, 2.4vw, 1.3rem);
}

.page-home section {
  padding-block: clamp(52px, 8vw, 108px);
}

.page-home .depth .eyebrow {
  color: var(--gold);
}

.page-home .depth .eyebrow::before {
  background: var(--gold);
}

/* ---------- 首屏框景 ---------- */
.page-home .hero {
  padding-block: clamp(24px, 4vw, 52px) 0;
}

.page-home .hero__frame {
  position: relative;
  width: min(100% - var(--gutter) * 2, var(--wrap));
  margin-inline: auto;
  padding: clamp(24px, 4vw, 46px) clamp(18px, 3.2vw, 48px) 0;
  background: var(--jade);
  border: 1px solid var(--hair);
  border-top: 0;
}

.page-home .hero__frame::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 12px;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(26, 26, 26, 0.32) 0 1px,
    transparent 1px 26px
  );
}

.page-home .hero__frame::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 108px;
  height: 3px;
  background: var(--red);
}

.page-home .hero__inner {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  padding-top: clamp(10px, 1.6vw, 20px);
}

.page-home .hero__kicker {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin: 0;
}

.page-home .hero__kicker-text {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: rgba(26, 26, 26, 0.62);
}

.page-home .hero__title {
  margin: 0.34em 0 0.36em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.3rem, 8.4vw, 6rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
}

.page-home .hero__title-main {
  display: block;
}

.page-home .hero__title-em {
  display: block;
  color: var(--red);
}

.page-home .hero__lede {
  margin: 0;
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: rgba(26, 26, 26, 0.8);
  max-width: 46ch;
}

.page-home .hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-home .hero__side {
  margin: 18px 0 0;
  font-size: var(--fs-14);
  color: rgba(26, 26, 26, 0.62);
}

.page-home .hero__side a {
  color: var(--red);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 16, 46, 0.4);
}

.page-home .hero__visual {
  margin: 0;
  position: relative;
}

.page-home .hero__visual img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 44px), calc(100% - 44px) 100%, 0 100%);
}

.page-home .hero__visual figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: rgba(26, 26, 26, 0.55);
}

.page-home .hero__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(26px, 3.5vw, 42px) calc(-1 * clamp(18px, 3.2vw, 48px)) 0;
  padding: 0;
  background: var(--hair);
  border-top: 1px solid var(--hair);
}

.page-home .hero__facts > div {
  background: var(--jade);
  padding: 16px 14px;
}

.page-home .hero__facts dt {
  font-family: var(--font-mono);
  font-size: var(--fs-20);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--red);
}

.page-home .hero__facts dd {
  margin: 2px 0 0;
  font-size: var(--fs-12);
  color: rgba(26, 26, 26, 0.68);
}

/* ---------- 横向索引带 ---------- */
.page-home .ribbon {
  margin-top: clamp(32px, 4.5vw, 56px);
  border-block: 1px solid var(--hair);
  background: var(--sand);
  overflow: hidden;
}

.page-home .ribbon__inner {
  display: flex;
  width: max-content;
  animation: home-ribbon 68s linear infinite;
}

.page-home .ribbon:hover .ribbon__inner,
.page-home .ribbon:focus-within .ribbon__inner {
  animation-play-state: paused;
}

.page-home .ribbon__list {
  display: flex;
  align-items: center;
  flex: none;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .ribbon__list li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 15px 26px;
  font-size: var(--fs-14);
  white-space: nowrap;
  border-right: 1px solid var(--hair);
}

.page-home .ribbon__no {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--red);
}

@keyframes home-ribbon {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- 服务范围速览 ---------- */
.page-home .scope__head {
  max-width: 62ch;
}

.page-home .scope__title {
  margin: 0.3em 0 0.5em;
}

.page-home .scope__lede {
  margin: 0;
  font-size: clamp(1rem, 1.9vw, 1.2rem);
  color: rgba(26, 26, 26, 0.78);
  max-width: 56ch;
}

.page-home .scope__body {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
  margin-top: clamp(28px, 4vw, 46px);
}

.page-home .scope__figure {
  margin: 0;
  padding: 10px;
  border: 1px solid var(--hair);
  background: var(--sand);
}

.page-home .scope__figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
}

.page-home .scope__figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: rgba(26, 26, 26, 0.58);
}

.page-home .scope__cols {
  display: grid;
  gap: 1px;
  background: var(--hair);
  border-block: 1px solid var(--hair);
}

.page-home .scope__col {
  background: var(--jade);
  padding: 22px 4px;
}

.page-home .scope__col h3 {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 8px;
  font-family: var(--font-body);
  font-size: var(--fs-16);
  font-weight: 700;
}

.page-home .scope__no {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-home .scope__col p {
  margin: 0;
  font-size: var(--fs-14);
  color: rgba(26, 26, 26, 0.76);
}

.page-home .scope__more {
  grid-column: 1 / -1;
  margin: 0;
  padding: 20px 4px;
  background: var(--jade);
}

/* ---------- 2025 索引纵深区 ---------- */
.page-home .depth {
  position: relative;
  background: var(--night);
  color: var(--jade);
}

.page-home .depth::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    -45deg,
    rgba(247, 245, 240, 0.035) 0 2px,
    transparent 2px 15px
  );
}

.page-home .depth .shell {
  position: relative;
  z-index: 1;
}

.page-home .depth__head {
  max-width: 66ch;
}

.page-home .depth__title {
  margin: 0.3em 0 0.5em;
  color: var(--jade);
}

.page-home .depth__lede {
  margin: 0;
  font-size: clamp(1rem, 1.9vw, 1.2rem);
  color: rgba(247, 245, 240, 0.82);
  max-width: 58ch;
}

.page-home .depth__grid {
  display: grid;
  gap: clamp(24px, 4vw, 52px);
  margin-top: clamp(30px, 4vw, 54px);
}

.page-home .clusters {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--night-hair);
  border: 1px solid var(--night-hair);
}

.page-home .clusters li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 18px;
  background: var(--night);
  font-size: var(--fs-16);
  color: rgba(247, 245, 240, 0.92);
}

.page-home .clusters__no {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-home .depth__rail {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}

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

.page-home .depth__figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 9 / 7;
  object-fit: cover;
  opacity: 0.92;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 38px), calc(100% - 38px) 100%, 0 100%);
}

.page-home .yearline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 24px;
  border-left: 1px solid var(--night-hair);
  display: grid;
  gap: 18px;
}

.page-home .yearline li {
  position: relative;
}

.page-home .yearline li::before {
  content: "";
  position: absolute;
  left: -29px;
  top: 10px;
  width: 9px;
  height: 9px;
  background: var(--red);
  transform: rotate(45deg);
}

.page-home .yearline__year {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-20);
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-home .yearline p {
  margin: 4px 0 0;
  font-size: var(--fs-14);
  color: rgba(247, 245, 240, 0.78);
}

.page-home .depth__more {
  margin: clamp(28px, 3.5vw, 44px) 0 0;
}

/* ---------- 版本与资料速取 ---------- */
.page-home .library__head {
  max-width: 64ch;
}

.page-home .library__head h2 {
  margin: 0.3em 0 0.5em;
}

.page-home .library__lede {
  margin: 0;
  font-size: clamp(1rem, 1.9vw, 1.2rem);
  color: rgba(26, 26, 26, 0.78);
  max-width: 56ch;
}

.page-home .library__body {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  margin-top: clamp(28px, 4vw, 46px);
}

.page-home .specs {
  margin: 0;
  border-top: 1px solid var(--hair);
}

.page-home .specs__row {
  display: grid;
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px solid var(--hair);
}

.page-home .specs dt {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--red);
}

.page-home .specs dd {
  margin: 0;
  font-size: var(--fs-16);
  color: rgba(26, 26, 26, 0.82);
}

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

.page-home .library__figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
}

.page-home .library__figure figcaption {
  margin-top: 10px;
  font-size: var(--fs-12);
  color: rgba(26, 26, 26, 0.58);
}

.page-home .verdiff {
  margin-top: clamp(26px, 3.5vw, 42px);
  border: 1px solid var(--hair);
  background: var(--sand);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-home .verdiff__sum {
  cursor: pointer;
  padding: 16px 20px;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: 0.06em;
  color: var(--night);
  list-style: none;
}

.page-home .verdiff__sum::-webkit-details-marker {
  display: none;
}

.page-home .verdiff__sum::after {
  content: "+";
  float: right;
  font-size: var(--fs-20);
  line-height: 1;
  color: var(--red);
}

.page-home .verdiff[open] .verdiff__sum::after {
  content: "\2212";
}

.page-home .verdiff__list {
  margin: 0;
  padding: 0 20px 22px 40px;
  display: grid;
  gap: 8px;
  font-size: var(--fs-14);
  color: rgba(26, 26, 26, 0.8);
}

.page-home .verdiff__list li::marker {
  color: var(--gold);
}

/* ---------- 选择理由 ---------- */
.page-home .why__head {
  max-width: 60ch;
}

.page-home .why__head h2 {
  margin-top: 0.3em;
}

.page-home .why__list {
  list-style: none;
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: 0;
  display: grid;
  gap: clamp(20px, 2.6vw, 30px);
}

.page-home .why__item {
  display: flex;
  flex-direction: column;
  padding-top: 18px;
  border-top: 3px solid var(--red);
}

.page-home .why__no {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-home .why__h {
  margin: 0 0 10px;
  font-size: var(--fs-20);
}

.page-home .why__p {
  margin: 0 0 18px;
  font-size: var(--fs-14);
  color: rgba(26, 26, 26, 0.78);
}

.page-home .why__stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin: auto 0 0;
}

.page-home .why__stat .stat__num {
  font-family: var(--font-mono);
  font-size: var(--fs-28);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--red);
}

.page-home .why__stat .stat__key {
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: rgba(26, 26, 26, 0.58);
}

/* ---------- 常用路径 ---------- */
.page-home .paths {
  background: var(--sand);
  border-block: 1px solid var(--hair);
}

.page-home .paths__head {
  max-width: 56ch;
}

.page-home .paths__head h2 {
  margin-top: 0.3em;
}

.page-home .paths__grid {
  display: grid;
  gap: clamp(18px, 2.4vw, 26px);
  margin-top: clamp(28px, 4vw, 44px);
}

.page-home .pcard {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(20px, 2.4vw, 30px);
  background: var(--jade);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-home .pcard__h {
  margin: 0;
  font-size: var(--fs-20);
}

.page-home .pcard__steps {
  margin: 0;
  padding-left: 1.2em;
  display: grid;
  gap: 8px;
  font-size: var(--fs-14);
  color: rgba(26, 26, 26, 0.78);
}

.page-home .pcard__steps li::marker {
  font-family: var(--font-mono);
  color: var(--gold);
}

.page-home .pcard__link {
  align-self: flex-start;
  margin-top: auto;
  padding-bottom: 2px;
  font-size: var(--fs-14);
  font-weight: 700;
  color: var(--red);
  text-decoration: none;
  border-bottom: 2px solid var(--gold);
}

.page-home .pcard__link:hover,
.page-home .pcard__link:focus-visible {
  color: var(--red-deep);
  border-bottom-color: var(--red);
}

.page-home .paths__note {
  margin: clamp(24px, 3vw, 36px) 0 0;
  font-size: var(--fs-14);
  color: rgba(26, 26, 26, 0.72);
}

.page-home .paths__note a {
  color: var(--red);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 16, 46, 0.4);
}

/* ---------- 焦点可见性 ---------- */
.page-home a:focus-visible,
.page-home summary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-home .specs__row {
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 4px 24px;
    align-items: baseline;
  }

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

@media (min-width: 640px) {
  .page-home .scope__col {
    padding: 24px 20px;
  }

  .page-home .scope__more {
    padding: 22px 20px;
  }

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

@media (min-width: 860px) {
  .page-home .scope__body {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
  }

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

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

@media (min-width: 900px) {
  .page-home .hero__inner {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    align-items: end;
  }

  .page-home .depth__grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    align-items: start;
  }

  .page-home .library__body {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-home .why__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-home .ribbon__inner {
    animation: none;
  }
}
</PAGE_CSS>>>