.page-home {
  display: block;
  background: var(--paper-050);
}

/* ---------- 首屏 ---------- */
.page-home .hero {
  position: relative;
  overflow: hidden;
  background: var(--indigo-700);
  color: #fff;
}

.page-home .hero::before {
  content: "";
  position: absolute;
  right: -14%;
  bottom: -22%;
  width: min(780px, 96vw);
  height: min(780px, 96vw);
  background: var(--ink-900);
  clip-path: polygon(36% 0, 100% 0, 100% 100%, 0 100%);
}

.page-home .hero::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 5px;
  height: 60%;
  background: linear-gradient(180deg, var(--orange-500), rgba(255, 122, 41, 0));
}

.page-home .hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(2rem, 5vw, 3.25rem);
  padding-top: clamp(3rem, 8vw, 6rem);
  padding-bottom: clamp(2.75rem, 7vw, 5.25rem);
}

.page-home .hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  margin: 0 0 1.1rem;
  font-size: var(--fs-meta);
  font-weight: 600;
  letter-spacing: 0.18em;
  color: rgba(255, 255, 255, 0.72);
}

.page-home .hero__eyebrow::before {
  content: "";
  width: 30px;
  height: 3px;
  background: var(--orange-500);
}

.page-home .hero__title {
  margin: 0 0 1.1rem;
  font-size: clamp(2.3rem, 7.6vw, 5.2rem);
  font-weight: 900;
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: #fff;
}

.page-home .hero__lede {
  max-width: 34ch;
  margin: 0;
  font-size: var(--fs-body);
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.84);
}

.page-home .hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
}

.page-home .hero__visual {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-m);
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.05);
}

.page-home .hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-home .hero__chip {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  z-index: 2;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-pill);
  background: var(--orange-500);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.page-home .hero__vnote {
  display: none;
  position: absolute;
  left: -1.5rem;
  top: 50%;
  transform: translateY(-50%);
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.42em;
  color: rgba(255, 255, 255, 0.42);
}

/* ---------- 索引带 ---------- */
.page-home .ph-index {
  background: var(--ink-900);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.page-home .ph-index__list {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  padding: 0.75rem 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-home .ph-index__list::-webkit-scrollbar {
  display: none;
}

.page-home .ph-index__list a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.95rem;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-pill);
  color: rgba(255, 255, 255, 0.86);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: color 220ms var(--ease-out), border-color 220ms var(--ease-out), background-color 220ms var(--ease-out);
}

.page-home .ph-index__list a:hover,
.page-home .ph-index__list a:focus-visible {
  color: #fff;
  border-color: var(--orange-500);
  background: rgba(255, 122, 41, 0.16);
}

.page-home .ph-index__no {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--orange-500);
  letter-spacing: 0.06em;
}

/* ---------- 区块通用 ---------- */
.page-home .ph-band {
  padding: clamp(3rem, 7vw, 5.5rem) 0;
}

.page-home .ph-band--paper {
  background: var(--paper-050);
  color: var(--text);
}

.page-home .ph-band--sand {
  background: var(--sand-200);
  color: var(--text);
}

.page-home .ph-band--teal {
  background: var(--teal-800);
  color: #fff;
}

.page-home .ph-band--ink {
  background: var(--ink-900);
  color: #fff;
}

.page-home .ph-band[id] {
  scroll-margin-top: 88px;
}

.page-home .ph-head {
  max-width: 58ch;
  margin-bottom: clamp(1.75rem, 4vw, 2.75rem);
}

.page-home .ph-head__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 0.9rem;
  font-size: var(--fs-meta);
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--gray-600);
}

.page-home .ph-head__eyebrow::before {
  content: "";
  width: 26px;
  height: 3px;
  background: var(--orange-500);
}

.page-home .ph-head__title {
  margin: 0 0 0.85rem;
  font-size: var(--fs-h2);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.page-home .ph-head__lede {
  margin: 0;
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--text-muted);
}

.page-home .ph-band--teal .ph-head__eyebrow,
.page-home .ph-band--ink .ph-head__eyebrow {
  color: rgba(255, 255, 255, 0.6);
}

.page-home .ph-band--teal .ph-head__lede,
.page-home .ph-band--ink .ph-head__lede {
  color: rgba(255, 255, 255, 0.8);
}

.page-home .ph-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: clamp(1.5rem, 3vw, 2rem);
}

.page-home .ph-actions--center {
  justify-content: center;
}

/* ---------- 首页栏目 ---------- */
.page-home .ph-groups {
  display: grid;
  gap: clamp(0.9rem, 2.4vw, 1.5rem);
}

.page-home .ph-group {
  padding: 1.2rem 1.05rem 1.35rem;
  border-radius: var(--radius-m);
  background: #fff;
  border-top: 3px solid var(--tech-blue-500);
}

.page-home .ph-group:nth-child(2) {
  border-top-color: var(--orange-500);
}

.page-home .ph-group:nth-child(3) {
  border-top-color: var(--teal-800);
}

.page-home .ph-group:nth-child(4) {
  border-top-color: var(--wine-700);
}

.page-home .ph-group__head {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 1rem;
}

.page-home .ph-group__code {
  display: inline-grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-s);
  background: var(--ink-900);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
}

.page-home .ph-group:nth-child(2) .ph-group__code {
  background: var(--orange-500);
  color: var(--ink-900);
}

.page-home .ph-group:nth-child(3) .ph-group__code {
  background: var(--teal-800);
}

.page-home .ph-group:nth-child(4) .ph-group__code {
  background: var(--wine-700);
}

.page-home .ph-group__name {
  margin: 0;
  font-size: var(--fs-h3);
  font-weight: 700;
  letter-spacing: -0.01em;
}

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

.page-home .ph-tile {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.7rem;
  align-items: start;
  padding: 0.6rem 0.7rem;
  border: 1px solid transparent;
  border-radius: var(--radius-s);
  background: var(--paper-050);
  color: inherit;
  text-decoration: none;
  transition: transform 220ms var(--ease-out), background-color 220ms var(--ease-out), border-color 220ms var(--ease-out);
}

.page-home .ph-tile:hover,
.page-home .ph-tile:focus-visible {
  background: #fff;
  border-color: var(--orange-500);
  transform: translateY(-2px) scale(1.02);
}

.page-home .ph-tile__coord {
  padding-top: 0.12rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--tech-blue-500);
  font-variant-numeric: tabular-nums;
  transition: color 220ms var(--ease-out);
}

.page-home .ph-tile:hover .ph-tile__coord,
.page-home .ph-tile:focus-visible .ph-tile__coord {
  color: var(--orange-500);
}

.page-home .ph-tile__name {
  display: block;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.4;
}

.page-home .ph-tile__note {
  display: block;
  margin-top: 0.15rem;
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--gray-600);
}

.page-home .ph-figure {
  margin: clamp(1.75rem, 4vw, 2.75rem) 0 0;
}

.page-home .ph-figure img {
  display: block;
  width: 100%;
  max-width: 760px;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius-m);
  background: var(--gray-300);
}

.page-home .ph-figure--wide img {
  max-width: 100%;
  aspect-ratio: 8 / 3;
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
}

.page-home .ph-figure figcaption {
  margin-top: 0.7rem;
  font-size: var(--fs-meta);
  letter-spacing: 0.04em;
  color: var(--gray-600);
}

/* ---------- 版本 ---------- */
.page-home .ph-version {
  display: grid;
  gap: clamp(1.75rem, 4vw, 2.75rem);
  align-items: start;
}

.page-home .ph-version__copy .ph-head {
  margin-bottom: 1.5rem;
}

.page-home .ph-keyfacts {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.page-home .ph-keyfacts li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.page-home .ph-keyfacts__k {
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.62);
}

.page-home .ph-keyfacts__v {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
}

.page-home .ph-version__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: var(--radius-m);
  background: rgba(255, 255, 255, 0.08);
}

.page-home .ph-timeline {
  margin-top: clamp(2.25rem, 5vw, 3.25rem);
  padding-top: clamp(1.5rem, 3vw, 2rem);
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.page-home .ph-timeline__label {
  margin: 0 0 1rem;
  font-size: var(--fs-meta);
  letter-spacing: 0.16em;
  color: rgba(255, 255, 255, 0.62);
}

.page-home .ph-timeline__bar {
  position: relative;
  display: grid;
  grid-template-columns: repeat(9, minmax(0, 1fr));
  align-items: center;
  height: 3rem;
}

.page-home .ph-timeline__bar::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 3px;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.22);
}

.page-home .ph-timeline__seg {
  position: relative;
  justify-self: center;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #fff;
  opacity: 0.55;
}

.page-home .ph-timeline__seg--now {
  width: 24px;
  height: 24px;
  opacity: 1;
  background: var(--orange-500);
  box-shadow: 0 0 0 7px rgba(255, 122, 41, 0.22);
}

.page-home .ph-timeline__cap {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin: 0.6rem 0 0;
  font-size: var(--fs-meta);
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.62);
}

.page-home .ph-timeline__now {
  color: var(--orange-500);
  font-weight: 600;
}

/* ---------- 四类服务 ---------- */
.page-home .ph-services {
  display: grid;
  gap: clamp(0.9rem, 2.2vw, 1.35rem);
}

.page-home .ph-service {
  position: relative;
  padding: 1.35rem 1.15rem 1.5rem;
  border-radius: var(--radius-m);
  background: #fff;
  border-left: 4px solid var(--tech-blue-500);
}

.page-home .ph-service--indigo {
  border-left-color: var(--indigo-700);
}

.page-home .ph-service--wine {
  border-left-color: var(--wine-700);
}

.page-home .ph-service--teal {
  border-left-color: var(--teal-800);
}

.page-home .ph-service__num {
  display: block;
  margin-bottom: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--gray-600);
}

.page-home .ph-service__title {
  margin: 0 0 0.6rem;
  font-size: var(--fs-h3);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-home .ph-service__text {
  margin: 0 0 0.9rem;
  font-size: 0.9375rem;
  line-height: 1.72;
  color: var(--text);
}

.page-home .ph-service__fit {
  margin: 0;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--gray-300);
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--gray-600);
}

/* ---------- 数据 ---------- */
.page-home .ph-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 1px;
  background: rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-m);
  overflow: hidden;
}

.page-home .ph-stat {
  background: var(--ink-900);
  padding: 1.1rem 0.9rem 1.25rem;
}

.page-home .ph-stat__label {
  margin: 0 0 0.45rem;
  font-size: 0.78125rem;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.6);
}

.page-home .ph-stat__value {
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
  margin: 0;
}

.page-home .ph-stat__num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  color: #fff;
  font-variant-numeric: tabular-nums;
}

.page-home .ph-stat__unit {
  font-size: 0.78125rem;
  color: rgba(255, 255, 255, 0.58);
}

.page-home .ph-rhythm {
  display: grid;
  gap: 0;
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.page-home .ph-rhythm li {
  display: grid;
  gap: 0.3rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.page-home .ph-rhythm__key {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--orange-500);
}

.page-home .ph-rhythm__val {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.84);
}

.page-home .ph-close {
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.78);
}

.page-home .ph-close a {
  color: #fff;
  text-decoration: none;
  border-bottom: 1px solid var(--orange-500);
}

.page-home .ph-close a:hover,
.page-home .ph-close a:focus-visible {
  color: var(--orange-500);
}

/* ---------- 焦点可见 ---------- */
.page-home a:focus-visible {
  outline: 2px solid var(--tech-blue-500);
  outline-offset: 2px;
}

.page-home .ph-band--teal a:focus-visible,
.page-home .ph-band--ink a:focus-visible,
.page-home .hero a:focus-visible,
.page-home .ph-index a:focus-visible {
  outline-color: var(--orange-500);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-home .ph-rhythm li {
    grid-template-columns: 11rem minmax(0, 1fr);
    align-items: baseline;
    gap: 1.25rem;
  }

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

@media (min-width: 900px) {
  .page-home .hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
  }

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

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

  .page-home .ph-stats {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .page-home .ph-groups {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 1240px) {
  .page-home .hero__vnote {
    display: block;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .ph-tile,
  .page-home .ph-index__list a,
  .page-home .ph-tile__coord {
    transition: none;
  }

  .page-home .ph-tile:hover,
  .page-home .ph-tile:focus-visible {
    transform: none;
  }
}