.page-home {
  --ph-cut: clamp(10px, 1.3vw, 16px);
  --ph-gap: clamp(14px, 2vw, 24px);
}

/* ---------- 首屏 ---------- */
.page-home .ph-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(18px, 3.5vw, 38px) 0 clamp(36px, 6vw, 76px);
  background:
    radial-gradient(90% 70% at 6% 0%, rgba(39, 242, 210, .10), transparent 62%),
    radial-gradient(65% 65% at 100% 8%, rgba(181, 84, 45, .14), transparent 72%),
    var(--ink-900);
  border-bottom: 1px solid var(--line);
}

.page-home .ph-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(30, 58, 90, .55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30, 58, 90, .55) 1px, transparent 1px);
  background-size: 68px 68px;
  pointer-events: none;
  -webkit-mask-image: radial-gradient(125% 95% at 18% 0%, #000 0%, rgba(0, 0, 0, .25) 58%, transparent 78%);
  mask-image: radial-gradient(125% 95% at 18% 0%, #000 0%, rgba(0, 0, 0, .25) 58%, transparent 78%);
}

.page-home .ph-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 44px);
}

.page-home .ph-kicker {
  margin: 0 0 14px;
  font-size: var(--step--1);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--clay);
}

.page-home .ph-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2rem, 1.3rem + 3.9vw, 4.1rem);
  line-height: 1.0;
  letter-spacing: -.02em;
  color: var(--ice);
}

.page-home .ph-hero__title em {
  font-style: normal;
  color: var(--cyan);
}

.page-home .ph-hero__lede {
  max-width: 60ch;
  margin: 0 0 22px;
  color: var(--body-text);
}

.page-home .ph-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: clamp(22px, 3.2vw, 34px);
}

/* 首屏速览锚点 */
.page-home .ph-anchor {
  position: relative;
  padding: 18px 18px 8px;
  background: var(--ink-800);
  clip-path: polygon(0 0, calc(100% - var(--ph-cut)) 0, 100% var(--ph-cut), 100% 100%, var(--ph-cut) 100%, 0 calc(100% - var(--ph-cut)));
}

.page-home .ph-anchor::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid var(--line);
  pointer-events: none;
}

.page-home .ph-anchor__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.page-home .ph-anchor__stamp {
  font-size: var(--step--1);
  color: var(--slate);
}

.page-home .ph-anchor__list {
  margin: 0;
}

/* 首屏右侧 */
.page-home .ph-hero__media {
  margin: 0 0 18px;
}

.page-home .ph-rail {
  position: relative;
  padding: 20px 18px 8px;
  background: linear-gradient(180deg, rgba(12, 36, 64, .92), rgba(7, 26, 47, .45));
  border-left: 2px solid var(--cyan);
  clip-path: polygon(0 0, calc(100% - var(--ph-cut)) 0, 100% var(--ph-cut), 100% 100%, 0 100%);
}

.page-home .ph-rail::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 46px;
  height: 4px;
  background: var(--clay);
}

.page-home .ph-rail__title {
  margin: 0;
  font-size: var(--step--1);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ice);
}

.page-home .ph-timeline {
  position: relative;
  margin: 14px 0 0;
  padding: 0 0 0 20px;
  list-style: none;
}

.page-home .ph-timeline::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 8px;
  bottom: 16px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), var(--line) 65%, transparent);
}

.page-home .ph-timeline li {
  position: relative;
  padding-bottom: 18px;
}

.page-home .ph-timeline li:last-child {
  padding-bottom: 4px;
}

.page-home .ph-timeline li::before {
  content: "";
  position: absolute;
  left: -20px;
  top: 4px;
  width: 9px;
  height: 9px;
  background: var(--ink-900);
  border: 1px solid var(--cyan);
  transform: rotate(45deg);
}

.page-home .ph-timeline__when {
  display: block;
  margin-bottom: 4px;
  font-size: var(--step--1);
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-home .ph-timeline__what {
  margin: 0;
  font-size: var(--step--1);
  line-height: 1.65;
  color: var(--body-text);
}

/* ---------- 阵容工作台 ---------- */
.page-home .ph-wb {
  padding: clamp(40px, 7vw, 84px) 0;
  background: var(--ink-850);
  border-bottom: 1px solid var(--line);
}

.page-home .ph-wb__intro {
  max-width: 68ch;
  margin: 0 0 26px;
  color: var(--body-text);
}

.page-home .ph-wb__cards {
  display: flex;
  gap: var(--ph-gap);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 6px;
}

.page-home .ph-lane {
  position: relative;
  flex: 0 0 78%;
  scroll-snap-align: start;
  padding: 20px 16px 22px;
  background: var(--ink-800);
  clip-path: polygon(0 0, calc(100% - var(--ph-cut)) 0, 100% var(--ph-cut), 100% 100%, var(--ph-cut) 100%, 0 calc(100% - var(--ph-cut)));
}

.page-home .ph-lane::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid var(--line);
  pointer-events: none;
}

.page-home .ph-lane::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--cyan);
}

.page-home .ph-lane:nth-child(3)::after {
  background: var(--orange);
}

.page-home .ph-lane:nth-child(4)::after {
  background: var(--clay);
}

.page-home .ph-lane:nth-child(5)::after {
  background: var(--teal);
}

.page-home .ph-lane__num {
  display: block;
  font-size: var(--step--1);
  color: var(--slate);
  letter-spacing: .12em;
  margin-bottom: 12px;
}

.page-home .ph-lane__name {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: var(--step-1);
  font-weight: 800;
  letter-spacing: .01em;
  color: var(--ice);
}

.page-home .ph-lane__desc {
  margin: 0;
  font-size: var(--step--1);
  line-height: 1.7;
  color: var(--body-text);
}

.page-home .ph-wb__figure {
  display: grid;
  gap: 18px;
  margin: clamp(26px, 3.5vw, 38px) 0 0;
}

.page-home .ph-wb__cap p {
  margin: 12px 0 0;
  font-size: var(--step--1);
  line-height: 1.75;
  color: var(--body-text);
}

/* ---------- 轮次档案 ---------- */
.page-home .ph-archive {
  padding: clamp(40px, 7vw, 84px) 0;
  background: var(--ink-900);
  border-bottom: 1px solid var(--line);
}

.page-home .ph-arch {
  display: grid;
  gap: clamp(22px, 3vw, 34px);
}

.page-home .ph-arch__rail {
  display: flex;
  gap: var(--ph-gap);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 6px;
}

.page-home .ph-round {
  flex: 0 0 82%;
  scroll-snap-align: start;
  padding: 18px 18px 20px;
  background: var(--ink-800);
  border-left: 3px solid var(--cyan);
}

.page-home .ph-round:nth-child(2) {
  border-left-color: var(--teal);
}

.page-home .ph-round:nth-child(3) {
  border-left-color: var(--orange);
}

.page-home .ph-round:nth-child(4) {
  border-left-color: var(--clay);
}

.page-home .ph-round__name {
  margin: 14px 0 10px;
  font-family: var(--font-head);
  font-size: var(--step-1);
  font-weight: 800;
  color: var(--ice);
}

.page-home .ph-round p {
  margin: 0 0 14px;
  font-size: var(--step--1);
  line-height: 1.7;
  color: var(--body-text);
}

.page-home .ph-round__meta {
  display: block;
  font-size: var(--step--1);
  color: var(--slate);
  letter-spacing: .05em;
}

.page-home .ph-arch__side {
  padding: 0;
}

.page-home .ph-arch__copy {
  margin: 18px 0 20px;
  font-size: var(--step--1);
  line-height: 1.75;
  color: var(--body-text);
}

/* ---------- 词典与专题 ---------- */
.page-home .ph-topics {
  padding: clamp(40px, 7vw, 84px) 0;
  background: var(--ink-850);
  border-bottom: 1px solid var(--line);
}

.page-home .ph-topics__intro {
  max-width: 72ch;
  margin: 0 0 24px;
  color: var(--body-text);
}

.page-home .ph-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: clamp(26px, 4vw, 40px);
}

.page-home .ph-cloud a {
  display: inline-block;
  padding: 9px 15px;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--ice);
  text-decoration: none;
  background: var(--ink-800);
  border: 1px solid var(--line);
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}

.page-home .ph-cloud a:hover,
.page-home .ph-cloud a:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(39, 242, 210, .08);
}

.page-home .ph-topics__cards {
  gap: var(--ph-gap);
}

.page-home .ph-topic-card {
  padding: 22px 20px 24px;
  background: var(--ink-800);
  border-top: 2px solid var(--cyan);
}

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

.page-home .ph-topic-card h3 {
  margin: 14px 0 10px;
  font-family: var(--font-head);
  font-size: var(--step-2);
  font-weight: 800;
  color: var(--ice);
}

.page-home .ph-topic-card p {
  margin: 0 0 18px;
  font-size: var(--step--1);
  line-height: 1.75;
  color: var(--body-text);
}

.page-home .ph-topics__figure {
  margin: clamp(28px, 4vw, 44px) 0 0;
}

/* ---------- 版本与咨询 ---------- */
.page-home .ph-plans {
  padding: clamp(40px, 7vw, 84px) 0;
  background: var(--ink-900);
}

.page-home .ph-plans__grid {
  display: grid;
  gap: var(--ph-gap);
}

.page-home .ph-plan {
  padding: 24px 22px 26px;
  background: var(--ink-800);
}

.page-home .ph-plan--version {
  border-left: 3px solid var(--orange);
}

.page-home .ph-plan--contact {
  border-left: 3px solid var(--cyan);
}

.page-home .ph-plan h3 {
  margin: 14px 0 12px;
  font-family: var(--font-head);
  font-size: var(--step-2);
  font-weight: 800;
  letter-spacing: -.005em;
  color: var(--ice);
}

.page-home .ph-plan p {
  margin: 0 0 20px;
  font-size: var(--step--1);
  line-height: 1.8;
  color: var(--body-text);
}

/* ---------- 信任横条 ---------- */
.page-home .ph-trust {
  padding: clamp(34px, 5.5vw, 62px) 0 clamp(44px, 7vw, 84px);
  background: var(--ink-850);
  border-top: 1px solid var(--line);
}

.page-home .ph-trust__title {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-size: var(--step-2);
  font-weight: 800;
  color: var(--ice);
}

.page-home .ph-trust__lead {
  max-width: 74ch;
  margin: 0 0 28px;
  color: var(--body-text);
}

.page-home .ph-trust__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 14px;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
}

.page-home .ph-stat__num {
  display: block;
  font-size: clamp(1.35rem, 1.05rem + 1.2vw, 2rem);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-home .ph-stat__label {
  display: block;
  margin-top: 8px;
  font-size: var(--step--1);
  color: var(--slate);
}

.page-home .ph-trust__more {
  max-width: 74ch;
  margin: 0 0 24px;
  font-size: var(--step--1);
  line-height: 1.8;
  color: var(--body-text);
}

.page-home .ph-trust__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-home .ph-wb__figure {
    grid-template-columns: 1.6fr .9fr;
    align-items: center;
    gap: 28px;
  }

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

@media (min-width: 900px) {
  .page-home .ph-wb__cards {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    overflow: visible;
    padding-bottom: 0;
  }

  .page-home .ph-lane {
    flex: none;
  }

  .page-home .ph-arch {
    grid-template-columns: 1.35fr .85fr;
    align-items: start;
  }

  .page-home .ph-arch__rail {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    overflow: visible;
    padding-bottom: 0;
  }

  .page-home .ph-round {
    flex: none;
  }

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

@media (min-width: 1000px) {
  .page-home .ph-hero__inner {
    grid-template-columns: 1.08fr .92fr;
    align-items: start;
    gap: clamp(32px, 5vw, 72px);
  }

  .page-home .ph-hero__media {
    margin-bottom: 22px;
  }
}

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

  .page-home .ph-timeline li::before {
    transform: none;
  }
}