/* ===== 首页 · 一站直达 ===== */
.page-home {
  --home-line: rgba(216, 224, 234, .45);
  --home-shadow: 8px 8px 0 rgba(10, 18, 32, .14);
  background: var(--ice);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-home .hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(18px, 3vw, 32px) clamp(76px, 10vw, 140px);
  background:
    radial-gradient(900px 460px at 88% -8%, rgba(59, 201, 219, .38), transparent 62%),
    radial-gradient(760px 420px at 2% 0%, rgba(11, 61, 145, .92), transparent 66%),
    linear-gradient(160deg, #0A1220 0%, #0B2149 56%, #0A1220 100%);
  color: var(--ice);
}

.page-home .hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: clamp(38px, 6vw, 78px);
  background: var(--ice);
  clip-path: polygon(0 44%, 0 100%, 100% 100%);
  pointer-events: none;
}

.page-home .hero__crumb {
  position: relative;
  z-index: 1;
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-home .hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  align-items: center;
}

.page-home .hero__frame {
  position: relative;
  padding: clamp(20px, 3.2vw, 38px);
  border: 2px solid rgba(216, 224, 234, .34);
  background: rgba(10, 18, 32, .44);
}

.page-home .hero__frame::before,
.page-home .hero__frame::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  border: 2px solid var(--amber);
}

.page-home .hero__frame::before {
  top: -2px;
  left: -2px;
  border-right: 0;
  border-bottom: 0;
}

.page-home .hero__frame::after {
  bottom: -2px;
  right: -2px;
  border-left: 0;
  border-top: 0;
}

.page-home .hero__eyebrow {
  display: inline-block;
  margin: 0 0 18px;
  padding: 6px 12px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--night);
  background: var(--amber);
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, .38);
}

.page-home .hero__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(30px, 5.4vw, 56px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -.012em;
  color: var(--ice);
}

.page-home .hero__title-mark {
  background: linear-gradient(transparent 64%, rgba(242, 169, 0, .52) 64%);
  padding-inline: 2px;
}

.page-home .hero__lede {
  margin: 0 0 clamp(22px, 3vw, 30px);
  max-width: 48ch;
  font-size: clamp(15px, 1.35vw, 17.5px);
  line-height: 1.78;
  color: rgba(247, 250, 252, .84);
}

.page-home .hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: clamp(26px, 3.4vw, 36px);
}

.page-home .hero__actions .btn {
  min-height: 48px;
  padding-inline: 22px;
  font-weight: 700;
}

.page-home .hero__actions .btn--ghost {
  color: var(--ice);
  background: transparent;
  border-color: rgba(247, 250, 252, .58);
}

.page-home .hero__actions .btn--ghost:hover,
.page-home .hero__actions .btn--ghost:focus-visible {
  color: var(--night);
  background: var(--ice);
  border-color: var(--ice);
}

.page-home .hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
  margin: 0;
  padding: 20px 0 0;
  list-style: none;
  border-top: 1px solid rgba(216, 224, 234, .26);
}

.page-home .hero__stat {
  min-width: 0;
}

.page-home .hero__stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.2vw, 25px);
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--amber);
}

.page-home .hero__stat-label {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  line-height: 1.55;
  color: rgba(247, 250, 252, .7);
}

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

.page-home .hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 2px solid rgba(216, 224, 234, .28);
  box-shadow: 12px 12px 0 rgba(59, 201, 219, .14);
}

/* ---------- 场景分流 ---------- */
.page-home .paths {
  padding-block: clamp(40px, 6vw, 84px);
}

.page-home .paths__head,
.page-home .compare__head,
.page-home .timeline__head,
.page-home .feed__head {
  max-width: 62ch;
  margin-bottom: clamp(24px, 3.6vw, 44px);
}

.page-home .paths__eyebrow,
.page-home .compare__eyebrow,
.page-home .timeline__eyebrow,
.page-home .feed__eyebrow,
.page-home .support__eyebrow {
  margin: 0 0 12px;
  padding-left: 14px;
  position: relative;
  font-family: var(--font-serif);
  font-size: 13.5px;
  letter-spacing: .08em;
  color: var(--red);
}

.page-home .paths__eyebrow::before,
.page-home .compare__eyebrow::before,
.page-home .timeline__eyebrow::before,
.page-home .feed__eyebrow::before,
.page-home .support__eyebrow::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 8px;
  height: 2px;
  background: var(--red);
  transform: translateY(-50%);
}

.page-home .paths__title,
.page-home .compare__title,
.page-home .timeline__title,
.page-home .feed__title,
.page-home .support__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(22px, 3.2vw, 34px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -.01em;
}

.page-home .paths__text,
.page-home .compare__text,
.page-home .timeline__text,
.page-home .feed__text,
.page-home .support__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: #47525f;
}

.page-home .paths__inner {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
}

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

.page-home .paths__visual img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-hard);
}

.page-home .paths__visual figcaption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--mist);
}

.page-home .paths__cards {
  display: grid;
  gap: 16px;
}

.page-home .path-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 20px 18px;
  background: #FFFFFF;
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-hard);
  transition: transform .18s var(--ease), box-shadow .18s var(--ease);
}

.page-home .path-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 9px 9px 0 rgba(11, 61, 145, .22);
}

.page-home .path-card__no {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .18em;
  color: var(--red);
}

.page-home .path-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  line-height: 1.3;
}

.page-home .path-card__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: #46505c;
}

.page-home .path-card__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  padding-top: 8px;
}

.page-home .path-card__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  font-size: 13.5px;
  font-weight: 600;
  text-decoration: none;
  color: var(--blue);
  background: var(--ice);
  border: 2px solid var(--snow);
  transition: color .16s var(--ease), background .16s var(--ease), border-color .16s var(--ease);
}

.page-home .path-card__link:hover,
.page-home .path-card__link:focus-visible {
  color: #FFFFFF;
  background: var(--blue);
  border-color: var(--blue);
}

/* ---------- 新旧对照 ---------- */
.page-home .compare {
  padding-block: clamp(40px, 6vw, 84px);
  background: linear-gradient(180deg, #E9F0F9 0%, var(--ice) 100%);
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
}

.page-home .compare__grid {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
  align-items: start;
}

.page-home .compare__switch {
  position: relative;
}

.page-home .compare__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-home .compare__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}

.page-home .compare__tab {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  color: var(--ink);
  background: #FFFFFF;
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 rgba(10, 18, 32, .12);
  transition: color .16s var(--ease), background .16s var(--ease), box-shadow .16s var(--ease);
}

.page-home .compare__radio:focus-visible + .compare__radio + .compare__tabs .compare__tab {
  outline: 2px solid var(--red);
  outline-offset: 2px;
}

.page-home .compare__panes {
  position: relative;
}

.page-home .compare__pane {
  display: none;
}

.page-home .compare__list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .compare__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 14px 16px;
  background: #FFFFFF;
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 rgba(10, 18, 32, .1);
}

.page-home .compare__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 28px;
  height: 28px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 800;
  color: #FFFFFF;
  background: var(--blue);
}

.page-home .compare__pane--new .compare__no {
  background: var(--red);
}

.page-home .compare__name {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 800;
  line-height: 1.4;
}

.page-home .compare__from {
  margin: 0;
  font-size: 13px;
  line-height: 1.62;
  color: var(--mist);
}

.page-home .compare__aside {
  margin: 14px 0 0;
  padding: 12px 14px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--red-soft);
  border-left: 4px solid var(--red);
}

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

.page-home .compare__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-hard);
}

/* 视图切换：仅 CSS，无脚本也可用 */
.page-home #cmp-old:checked ~ .compare__tabs .compare__tab[for="cmp-old"],
.page-home #cmp-new:checked ~ .compare__tabs .compare__tab[for="cmp-new"] {
  color: #FFFFFF;
  background: var(--blue);
  box-shadow: 4px 4px 0 rgba(11, 61, 145, .32);
}

.page-home #cmp-old:checked ~ .compare__panes .compare__pane--old {
  display: block;
}

.page-home #cmp-new:checked ~ .compare__panes .compare__pane--new {
  display: block;
}

/* ---------- 版本演进 ---------- */
.page-home .timeline {
  padding-block: clamp(40px, 6vw, 84px);
}

.page-home .timeline__list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .timeline__item {
  display: grid;
  gap: 8px;
  padding: 16px 18px;
  background: #FFFFFF;
  border: 2px solid var(--ink);
  border-left: 6px solid var(--blue);
  box-shadow: var(--shadow-hard);
}

.page-home .timeline__when {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .05em;
  color: var(--blue);
}

.page-home .timeline__label {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  line-height: 1.35;
}

.page-home .timeline__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: #46505c;
}

.page-home .timeline__note {
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 14px 16px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--ink);
  background: var(--snow);
  border: 2px dashed var(--mist);
}

/* ---------- 支持保障 ---------- */
.page-home .support {
  padding-block: clamp(44px, 6vw, 88px);
  background:
    radial-gradient(720px 380px at 92% 8%, rgba(59, 201, 219, .18), transparent 66%),
    var(--night);
  color: var(--ice);
}

.page-home .support__grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  align-items: start;
}

.page-home .support__eyebrow {
  color: var(--amber);
}

.page-home .support__eyebrow::before {
  background: var(--amber);
}

.page-home .support__title {
  color: var(--ice);
}

.page-home .support__text {
  color: rgba(247, 250, 252, .78);
  max-width: 54ch;
}

.page-home .support__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
  margin: clamp(22px, 3vw, 30px) 0;
  padding: 20px 0 0;
  list-style: none;
  border-top: 1px solid rgba(216, 224, 234, .22);
}

.page-home .support__fact-num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(16px, 1.9vw, 20px);
  font-weight: 800;
  color: var(--cyan);
  letter-spacing: -.01em;
}

.page-home .support__fact-label {
  display: block;
  margin-top: 5px;
  font-size: 12.5px;
  line-height: 1.55;
  color: rgba(247, 250, 252, .68);
}

.page-home .support__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  margin-bottom: clamp(22px, 3vw, 30px);
}

.page-home .support__links .btn {
  min-height: 46px;
  padding-inline: 20px;
  font-weight: 700;
}

.page-home .support__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ice);
  text-decoration: none;
  border-bottom: 2px solid rgba(242, 169, 0, .7);
}

.page-home .support__link:hover,
.page-home .support__link:focus-visible {
  color: var(--amber);
}

.page-home .support__contact {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 18px 18px 16px;
  background: rgba(247, 250, 252, .07);
  border: 2px solid rgba(216, 224, 234, .3);
}

.page-home .support__contact-row {
  display: grid;
  gap: 2px;
}

.page-home .support__contact-label {
  font-size: 12px;
  letter-spacing: .1em;
  color: rgba(247, 250, 252, .6);
}

.page-home .support__contact-value {
  margin: 0;
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ice);
  word-break: break-word;
}

.page-home .support__note {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(247, 250, 252, .62);
}

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

.page-home .support__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 2px solid rgba(216, 224, 234, .34);
  box-shadow: 10px 10px 0 rgba(59, 201, 219, .16);
}

/* ---------- 内容索引 ---------- */
.page-home .feed {
  padding-block: clamp(40px, 6vw, 84px);
}

.page-home .feed__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--ink);
}

.page-home .feed__item {
  border-bottom: 2px solid var(--ink);
}

.page-home .feed__link {
  display: grid;
  gap: 8px;
  align-items: start;
  padding: 18px 10px;
  text-decoration: none;
  color: inherit;
  transition: background .16s var(--ease), transform .16s var(--ease);
}

.page-home .feed__link:hover,
.page-home .feed__link:focus-visible {
  background: #FFFFFF;
  transform: translateX(4px);
}

.page-home .feed__tag {
  display: inline-flex;
  align-items: center;
  justify-self: start;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
  border: 2px solid var(--ink);
}

.page-home .feed__tag--red {
  color: var(--red);
  background: var(--red-soft);
}

.page-home .feed__tag--blue {
  color: var(--blue);
  background: #E7EEF9;
}

.page-home .feed__tag--amber {
  color: var(--night);
  background: rgba(242, 169, 0, .26);
}

.page-home .feed__name {
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--ink);
}

.page-home .feed__meta {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--mist);
}

.page-home .feed__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 22px;
  margin-top: clamp(20px, 3vw, 28px);
}

.page-home .feed__foot .btn {
  min-height: 46px;
  padding-inline: 20px;
  font-weight: 700;
}

.page-home .feed__side {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 14px;
  font-weight: 600;
  color: var(--blue);
  text-decoration: none;
  border-bottom: 2px solid var(--snow);
}

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

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

  .page-home .timeline__item {
    grid-template-columns: 108px minmax(0, 1fr);
    align-items: start;
    gap: 16px;
  }

  .page-home .support__contact {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }
}

@media (min-width: 760px) {
  .page-home .hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-home .feed__link {
    grid-template-columns: 116px minmax(0, 1fr) auto;
    align-items: center;
    gap: 16px;
    padding: 20px 12px;
  }

  .page-home .feed__meta {
    text-align: right;
  }
}

@media (min-width: 900px) {
  .page-home .hero__inner {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
  }

  .page-home .support__grid {
    grid-template-columns: minmax(0, 1fr) 340px;
  }
}

@media (min-width: 960px) {
  .page-home .paths__inner {
    grid-template-columns: 330px minmax(0, 1fr);
    align-items: start;
  }

  .page-home .compare__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
  }
}

@media (min-width: 1080px) {
  .page-home .paths__cards {
    gap: 18px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-home .path-card,
  .page-home .feed__link,
  .page-home .compare__tab,
  .page-home .path-card__link {
    transition: none;
  }

  .page-home .path-card:hover,
  .page-home .feed__link:hover {
    transform: none;
  }
}