.page-home {
  --ph-edge: rgba(91, 107, 140, 0.34);
  --ph-edge-strong: rgba(61, 225, 255, 0.42);
  --ph-panel: rgba(18, 26, 46, 0.88);
  --ph-panel-deep: rgba(11, 16, 32, 0.86);
  --ph-glow-cyan: rgba(61, 225, 255, 0.22);
  --ph-glow-gold: rgba(246, 200, 106, 0.2);
}

/* ---------- 首屏：侧边导览 ---------- */
.page-home .ph-hero {
  position: relative;
  isolation: isolate;
  padding-block: clamp(28px, 5vw, 60px) clamp(36px, 6vw, 84px);
  border-bottom: 1px solid var(--ph-edge);
  background: linear-gradient(180deg, var(--gxy-bg-2) 0%, var(--gxy-bg) 72%);
}

.page-home .ph-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  overflow: hidden;
}

.page-home .ph-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.26;
}

.page-home .ph-hero__glow {
  position: absolute;
  z-index: -1;
  top: -18%;
  right: -22%;
  width: min(620px, 92vw);
  height: min(620px, 92vw);
  background: radial-gradient(circle, var(--ph-glow-cyan) 0%, rgba(61, 225, 255, 0) 64%);
  filter: blur(18px);
  pointer-events: none;
}

.page-home .ph-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 4vw, 44px);
}

.page-home .ph-rail {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 16px 16px 16px 22px;
  border-left: 1px solid var(--ph-edge);
  background: linear-gradient(120deg, rgba(18, 26, 46, 0.92), rgba(11, 16, 32, 0.45));
  min-width: 0;
}

.page-home .ph-rail::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 20px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gxy-cyan);
  box-shadow: 0 0 0 4px rgba(61, 225, 255, 0.12), 0 0 18px rgba(61, 225, 255, 0.65);
  animation: ph-breathe 4.5s ease-in-out infinite;
}

.page-home .ph-rail__ver {
  margin: 0;
  letter-spacing: 0.1em;
}

.page-home .ph-rail__brand {
  margin: 0;
  font-family: var(--gxy-font-display);
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.03em;
  color: var(--gxy-ink);
}

.page-home .ph-rail__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gxy-muted);
}

.page-home .ph-rail__btn {
  margin-top: 6px;
  align-self: flex-start;
}

.page-home .ph-rail__meta {
  margin: 4px 0 0;
  font-size: 11px;
  color: var(--gxy-line);
  letter-spacing: 0.06em;
}

.page-home .ph-hero__main {
  min-width: 0;
}

.page-home .ph-hero__title {
  margin: clamp(14px, 2.4vw, 22px) 0 0;
  font-family: var(--gxy-font-display);
  font-size: clamp(34px, 8vw, 92px);
  line-height: 1.02;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--gxy-ink);
}

.page-home .ph-hero__title span {
  color: var(--gxy-cyan);
  text-shadow: 0 0 34px rgba(61, 225, 255, 0.35);
}

.page-home .ph-hero__lead {
  margin-top: clamp(16px, 2.6vw, 24px);
  max-width: 34em;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.9;
  color: var(--gxy-muted);
}

/* ---------- 首屏目录索引 ---------- */
.page-home .ph-index {
  list-style: none;
  margin: clamp(22px, 3.6vw, 36px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-home .ph-index__item {
  position: relative;
  min-width: 0;
  padding: 14px 18px 16px 30px;
  border: 1px solid var(--ph-edge);
  background: linear-gradient(100deg, rgba(18, 26, 46, 0.95), rgba(18, 26, 46, 0.5));
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
  transition: transform 0.28s ease, border-color 0.28s ease, background 0.28s ease;
}

.page-home .ph-index__item::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 21px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gxy-cyan);
  box-shadow: 0 0 12px rgba(61, 225, 255, 0.8);
}

.page-home .ph-index__item--gold::before {
  background: var(--gxy-gold);
  box-shadow: 0 0 12px rgba(246, 200, 106, 0.75);
}

.page-home .ph-index__item--coral::before {
  background: var(--gxy-coral);
  box-shadow: 0 0 12px rgba(255, 107, 107, 0.7);
}

.page-home .ph-index__item:hover,
.page-home .ph-index__item:focus-within {
  border-color: var(--ph-edge-strong);
  transform: translateX(4px);
}

.page-home .ph-index__kicker {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gxy-line);
}

.page-home .ph-index__title {
  margin: 6px 0 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--gxy-ink);
}

.page-home .ph-index__desc {
  margin: 6px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--gxy-muted);
}

/* ---------- 通用小节 ---------- */
.page-home .ph-h2 {
  margin: 10px 0 0;
  font-family: var(--gxy-font-display);
  font-size: clamp(26px, 4.6vw, 46px);
  line-height: 1.16;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--gxy-ink);
}

.page-home .ph-sec-lead {
  margin-top: 14px;
  max-width: 38em;
  font-size: 16px;
  line-height: 1.88;
  color: var(--gxy-muted);
}

/* ---------- 动线三步 ---------- */
.page-home .ph-steps {
  list-style: none;
  counter-reset: ph-step;
  margin: clamp(22px, 4vw, 34px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-home .ph-step {
  position: relative;
  min-width: 0;
  padding: 20px 18px 18px;
  border: 1px solid var(--ph-edge);
  background: linear-gradient(160deg, rgba(18, 26, 46, 0.95), rgba(11, 16, 32, 0.9));
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
  transition: border-color 0.28s ease;
}

.page-home .ph-step:hover,
.page-home .ph-step:focus-within {
  border-color: var(--ph-edge-strong);
}

.page-home .ph-step__no {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gxy-cyan);
}

.page-home .ph-step__title {
  margin: 8px 0 0;
  font-size: 17px;
  line-height: 1.45;
  color: var(--gxy-ink);
}

.page-home .ph-step p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--gxy-muted);
}

.page-home .ph-step__meta {
  margin: 12px 0 0;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--gxy-line);
  opacity: 0.75;
  transition: opacity 0.28s ease, color 0.28s ease;
}

.page-home .ph-step:hover .ph-step__meta,
.page-home .ph-step:focus-within .ph-step__meta {
  opacity: 1;
  color: var(--gxy-gold);
}

/* ---------- 新旧路径对照 ---------- */
.page-home .ph-compare {
  margin-top: clamp(24px, 4vw, 40px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-home .ph-compare__side {
  position: relative;
  min-width: 0;
  padding: 20px 18px 22px;
  border: 1px solid var(--ph-edge);
  background: linear-gradient(170deg, rgba(18, 26, 46, 0.78), rgba(7, 11, 20, 0.92));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-home .ph-compare__side--new {
  border-color: rgba(246, 200, 106, 0.46);
  background: linear-gradient(170deg, rgba(246, 200, 106, 0.1), rgba(18, 26, 46, 0.92) 58%, rgba(7, 11, 20, 0.94));
  box-shadow: 0 0 0 1px rgba(246, 200, 106, 0.08) inset, 0 18px 46px rgba(0, 0, 0, 0.35);
}

.page-home .ph-compare__title {
  margin: 8px 0 0;
  font-size: 16px;
  line-height: 1.5;
  color: var(--gxy-ink);
}

.page-home .ph-compare__list {
  list-style: none;
  counter-reset: ph-cmp;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-home .ph-compare__list li {
  position: relative;
  counter-increment: ph-cmp;
  padding-left: 28px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--gxy-muted);
}

.page-home .ph-compare__list li::before {
  content: counter(ph-cmp, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 3px;
  font-family: var(--gxy-font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--gxy-line);
}

.page-home .ph-compare__side--new .ph-compare__list li::before {
  color: var(--gxy-gold);
}

.page-home .ph-path__fig {
  margin: clamp(24px, 4vw, 38px) 0 0;
}

.page-home .gxy-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 第12版变化 ---------- */
.page-home .ph-version__grid {
  margin-top: clamp(22px, 4vw, 34px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-home .ph-changes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-home .ph-changes li {
  min-width: 0;
  padding: 14px 16px 15px 18px;
  border-left: 2px solid var(--gxy-line);
  background: linear-gradient(90deg, rgba(18, 26, 46, 0.82), rgba(11, 16, 32, 0.55));
}

.page-home .ph-changes li:nth-child(1) {
  border-left-color: var(--gxy-cyan);
}

.page-home .ph-changes li:nth-child(2) {
  border-left-color: var(--gxy-gold);
}

.page-home .ph-changes li:nth-child(3) {
  border-left-color: var(--gxy-coral);
}

.page-home .ph-changes li:nth-child(4) {
  border-left-color: var(--gxy-green);
}

.page-home .ph-changes__title {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--gxy-ink);
}

.page-home .ph-changes li p + p {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--gxy-muted);
}

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

/* ---------- 主题筛选 ---------- */
.page-home .ph-filter {
  margin-top: clamp(18px, 3vw, 26px);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-home .ph-filter .gxy-filter__btn {
  font-size: 13px;
  padding: 8px 14px;
  border: 1px solid var(--ph-edge);
  background: rgba(11, 16, 32, 0.7);
  color: var(--gxy-muted);
  cursor: pointer;
  transition: color 0.24s ease, border-color 0.24s ease, background 0.24s ease;
}

.page-home .ph-filter .gxy-filter__btn:hover {
  color: var(--gxy-ink);
  border-color: var(--ph-edge-strong);
}

.page-home .ph-filter .gxy-filter__btn[aria-pressed="true"] {
  color: var(--gxy-ink);
  border-color: rgba(61, 225, 255, 0.55);
  background: rgba(61, 225, 255, 0.12);
  box-shadow: 0 0 18px rgba(61, 225, 255, 0.16);
}

.page-home .ph-topics__wrap {
  margin-top: clamp(18px, 3vw, 28px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

.page-home .ph-topics {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  min-width: 0;
}

.page-home .ph-topics [data-topic][hidden] {
  display: none !important;
}

.page-home .ph-topic {
  position: relative;
  min-width: 0;
  padding: 18px 18px 16px;
  border: 1px solid var(--ph-edge);
  background: linear-gradient(155deg, rgba(18, 26, 46, 0.92), rgba(7, 11, 20, 0.92));
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
  overflow: hidden;
}

.page-home .ph-topic::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 2px;
  background: var(--gxy-cyan);
  opacity: 0.85;
}

.page-home .ph-topic[data-topic="gold"]::after {
  background: var(--gxy-gold);
}

.page-home .ph-topic[data-topic="coral"]::after {
  background: var(--gxy-coral);
}

.page-home .ph-topic__tag {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gxy-line);
}

.page-home .ph-topic__title {
  margin: 8px 0 0;
  font-size: 16px;
  line-height: 1.45;
  color: var(--gxy-ink);
}

.page-home .ph-topic p + p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--gxy-muted);
}

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

/* ---------- 运营数据 ---------- */
.page-home .ph-stats {
  margin: clamp(22px, 4vw, 34px) 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-home .ph-stat {
  display: flex;
  flex-direction: column-reverse;
  justify-content: flex-end;
  gap: 6px;
  min-width: 0;
  padding: 16px 14px;
  border: 1px solid var(--ph-edge);
  background: linear-gradient(160deg, rgba(11, 16, 32, 0.9), rgba(18, 26, 46, 0.55));
}

.page-home .ph-stat dd {
  margin: 0;
}

.page-home .ph-stat dt {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--gxy-muted);
}

.page-home .ph-stat__num {
  display: inline-block;
  font-family: var(--gxy-font-mono);
  font-size: clamp(24px, 3.6vw, 32px);
  line-height: 1.1;
  color: var(--gxy-ink);
  letter-spacing: 0.01em;
}

.page-home .ph-stat__num span {
  margin-left: 4px;
  font-size: 12px;
  color: var(--gxy-cyan);
  letter-spacing: 0.02em;
}

.page-home .ph-proof__note {
  margin: clamp(20px, 3vw, 28px) 0 0;
  max-width: 40em;
  padding-left: 16px;
  border-left: 1px solid var(--ph-edge);
  font-size: 14px;
  line-height: 1.85;
  color: var(--gxy-muted);
}

/* ---------- 页尾交接 ---------- */
.page-home .ph-next__inner {
  display: grid;
  gap: 14px;
}

.page-home .ph-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 6px;
}

.page-home .ph-next__links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 8px 0 0;
  padding: 0;
  font-size: 14px;
}

.page-home .ph-next__links a {
  color: var(--gxy-muted);
  text-decoration: none;
  border-bottom: 1px solid var(--ph-edge);
  padding-bottom: 2px;
  transition: color 0.24s ease, border-color 0.24s ease;
}

.page-home .ph-next__links a:hover,
.page-home .ph-next__links a:focus-visible {
  color: var(--gxy-cyan);
  border-bottom-color: var(--gxy-cyan);
}

.page-home .ph-next__note {
  margin: 10px 0 0;
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--gxy-line);
  word-break: break-word;
}

/* ---------- 固定回退入口 ---------- */
.page-home .ph-return {
  position: fixed;
  z-index: 60;
  right: 16px;
  bottom: 18px;
  padding: 10px 16px;
  font-size: 13px;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--gxy-gold);
  background: rgba(7, 11, 20, 0.94);
  border: 1px solid rgba(246, 200, 106, 0.5);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(6px);
}

.page-home .ph-return:hover,
.page-home .ph-return:focus-visible {
  border-color: var(--gxy-gold);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.55), 0 0 18px rgba(246, 200, 106, 0.28);
}

@keyframes ph-breathe {
  0%,
  100% {
    opacity: 0.6;
    transform: scale(0.9);
  }
  50% {
    opacity: 1;
    transform: scale(1.08);
  }
}

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

  .page-home .ph-topic:nth-child(2n) {
    margin-top: 20px;
  }
}

@media (min-width: 780px) {
  .page-home .ph-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-home .ph-step + .ph-step::before {
    content: "";
    position: absolute;
    left: -18px;
    top: 42px;
    width: 18px;
    height: 1px;
    background: linear-gradient(90deg, rgba(91, 107, 140, 0), var(--gxy-line));
  }

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

@media (min-width: 900px) {
  .page-home .ph-hero__grid {
    grid-template-columns: minmax(200px, 264px) minmax(0, 1fr);
    gap: clamp(28px, 5vw, 64px);
  }

  .page-home .ph-rail {
    padding-left: 24px;
  }

  .page-home .ph-index__item:nth-child(2) {
    margin-inline-start: clamp(0px, 4vw, 48px);
  }

  .page-home .ph-index__item:nth-child(3) {
    margin-inline-start: clamp(0px, 8vw, 96px);
  }

  .page-home .ph-version__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }
}

@media (min-width: 980px) {
  .page-home .ph-topics__wrap {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 0.85fr);
    align-items: start;
    gap: 26px;
  }

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

@media (max-width: 639px) {
  .page-home .ph-return {
    left: 16px;
    right: 16px;
    text-align: center;
    justify-content: center;
  }

  .page-home .ph-hero__title {
    font-size: clamp(30px, 10vw, 44px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .ph-rail::before {
    animation: none;
  }

  .page-home * {
    transition: none !important;
  }
}