.page-home {
  --home-pad: clamp(2.25rem, 5.5vw, 4.5rem);
  --home-rule: 2px;
  background: var(--paper);
  color: var(--graphite);
  font-family: var(--font-sans);
}

.page-home h1,
.page-home h2,
.page-home h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--ink-green);
  letter-spacing: 0.02em;
  margin: 0;
}

.page-home .mono {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-home ul,
.page-home ol,
.page-home dl,
.page-home figure,
.page-home p {
  margin: 0;
}

/* ---------- 面包屑 ---------- */
.page-home .crumb-bar {
  background: var(--mist);
  border-bottom: var(--home-rule) solid var(--ink-deep);
}

.page-home .crumb-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.7rem;
}

.page-home .breadcrumb__list {
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--ink-green);
}

.page-home .crumb-bar__code {
  color: var(--copper);
}

/* ---------- 首屏分屏 ---------- */
.page-home .hero {
  background: var(--paper);
  border-bottom: var(--home-rule) solid var(--ink-deep);
  padding-block: var(--home-pad) clamp(1.75rem, 4vw, 3rem);
}

.page-home .hero__grid {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  align-items: center;
}

.page-home .hero__eyebrow {
  color: var(--copper);
  margin-bottom: 1rem;
}

.page-home .hero__title {
  font-size: clamp(1.9rem, 4.6vw, 3.25rem);
  line-height: 1.3;
}

.page-home .hero__mark {
  display: inline-block;
  background: var(--ink-green);
  color: var(--gold);
  padding: 0 0.22em;
}

.page-home .hero__lead {
  margin-top: 1.25rem;
  max-width: 34em;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--graphite);
}

.page-home .hero__facts {
  list-style: none;
  margin-top: 1.6rem;
  padding: 0;
  display: grid;
  gap: 0.5rem;
  font-size: 0.92rem;
  color: var(--ink-green);
}

.page-home .hero__facts li {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid rgba(110, 122, 115, 0.3);
}

.page-home .hero__facts .mono {
  font-size: 0.85rem;
  color: var(--copper);
}

.page-home .hero__visual {
  position: relative;
  border: var(--home-rule) solid var(--ink-deep);
  box-shadow: var(--shadow-md);
  background: var(--ink-deep);
  overflow: hidden;
}

.page-home .hero__visual img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-home .hero__visual-caption {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 0.5rem 0.9rem;
  background: var(--ink-deep);
  color: var(--gold-light);
  font-size: 0.7rem;
}

.page-home .hero__entries {
  display: grid;
  gap: 1rem;
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
}

.page-home .entry-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 1.35rem;
  border: var(--home-rule) solid var(--slate);
  background: var(--paper);
  color: var(--ink-green);
  font-family: var(--font-serif);
  font-size: 1.08rem;
  font-weight: 600;
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease),
    transform var(--dur) var(--ease),
    background-color var(--dur) var(--ease),
    color var(--dur) var(--ease);
}

.page-home .entry-link:hover,
.page-home .entry-link:focus-visible {
  border-color: var(--gold);
  background: var(--ink-green);
  color: var(--gold-light);
  box-shadow: 6px 6px 0 var(--ink-deep);
  transform: translate(-2px, -2px);
}

.page-home .entry-link:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 2px;
}

.page-home .entry-link__path {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--copper);
  white-space: nowrap;
}

.page-home .entry-link:hover .entry-link__path,
.page-home .entry-link:focus-visible .entry-link__path {
  color: var(--gold-light);
}

/* ---------- 沿革横带 ---------- */
.page-home .band {
  background: var(--mist);
  border-bottom: var(--home-rule) solid var(--ink-deep);
  padding-block: var(--home-pad);
}

.page-home .band__intro {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  align-items: center;
}

.page-home .band__eyebrow {
  color: var(--copper);
  margin-bottom: 0.85rem;
}

.page-home .band__intro h2 {
  font-size: clamp(1.6rem, 3.4vw, 2.5rem);
  line-height: 1.35;
}

.page-home .band__intro-copy p {
  margin-top: 1rem;
  max-width: 34em;
  line-height: 1.85;
}

.page-home .band__intro-figure {
  border: var(--home-rule) solid var(--ink-deep);
  box-shadow: var(--shadow-sm);
  background: var(--paper);
}

.page-home .band__intro-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-home .band__intro-figure figcaption {
  padding: 0.5rem 0.85rem;
  border-top: 1px solid rgba(110, 122, 115, 0.4);
  font-size: 0.7rem;
  color: var(--ink-green);
}

.page-home .track {
  list-style: none;
  margin-top: clamp(2rem, 4vw, 3rem);
  padding: 0;
  display: grid;
  gap: 0;
}

.page-home .track__node {
  position: relative;
  border-left: var(--home-rule) solid var(--slate);
  padding: 0 0 0 1.15rem;
  margin-bottom: 1.5rem;
}

.page-home .track__node:last-child {
  margin-bottom: 0;
}

.page-home .track__dot {
  position: absolute;
  left: -6px;
  top: 0.35rem;
  width: 8px;
  height: 8px;
  background: var(--paper);
  border: var(--home-rule) solid var(--ink-deep);
  box-sizing: content-box;
}

.page-home .track__stage {
  font-size: 0.68rem;
  color: var(--copper);
  margin-bottom: 0.45rem;
}

.page-home .track__title {
  font-size: 1rem;
  line-height: 1.55;
  margin-bottom: 0.4rem;
}

.page-home .track__text {
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--graphite);
}

/* ---------- 三大品类 ---------- */
.page-home .cats {
  background: var(--paper);
  border-bottom: var(--home-rule) solid var(--ink-deep);
  padding-block: var(--home-pad);
}

.page-home .cats__head {
  max-width: 46em;
}

.page-home .cats__eyebrow {
  color: var(--copper);
  margin-bottom: 0.85rem;
}

.page-home .cats__head h2 {
  font-size: clamp(1.6rem, 3.4vw, 2.5rem);
  line-height: 1.35;
}

.page-home .cats__lead {
  margin-top: 1rem;
  line-height: 1.85;
}

.page-home .cats__figure {
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
  border: var(--home-rule) solid var(--ink-deep);
  box-shadow: var(--shadow-md);
  background: var(--ink-deep);
}

.page-home .cats__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

.page-home .cats__figure figcaption {
  padding: 0.6rem 0.9rem;
  background: var(--ink-deep);
  color: var(--gold-light);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
}

.page-home .cats__grid {
  display: grid;
  gap: 1.25rem;
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
}

.page-home .cat {
  border: var(--home-rule) solid var(--ink-deep);
  background: var(--mist);
  padding: 1.5rem 1.4rem;
  box-shadow: var(--shadow-sm);
}

.page-home .cat--b {
  background: var(--paper);
  border-color: var(--copper);
}

.page-home .cat--c {
  background: var(--paper);
  border-color: var(--slate);
}

.page-home .cat__no {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  margin-bottom: 0.9rem;
  border: 1px solid var(--copper);
  font-size: 0.68rem;
  color: var(--copper);
}

.page-home .cat h3 {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
}

.page-home .cat > p {
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--graphite);
}

.page-home .cat__meta {
  margin-top: 1.1rem;
  padding-top: 0.95rem;
  border-top: 1px solid rgba(110, 122, 115, 0.4);
}

.page-home .cat__meta dt {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--copper);
}

.page-home .cat__meta dd {
  margin: 0.25rem 0 0.65rem;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--graphite);
}

.page-home .cat__meta dd:last-child {
  margin-bottom: 0;
}

.page-home .cats__more {
  margin-top: 1.85rem;
}

.page-home .link-arrow {
  display: inline-block;
  padding-bottom: 0.25rem;
  border-bottom: var(--home-rule) solid var(--gold);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--ink-green);
  text-decoration: none;
  transition: color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.page-home .link-arrow:hover,
.page-home .link-arrow:focus-visible {
  color: var(--copper);
  border-bottom-color: var(--ink-green);
  outline: none;
}

.page-home .link-arrow:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 3px;
}

/* ---------- 登录对照 ---------- */
.page-home .login {
  background: var(--ink-green);
  color: var(--paper);
  border-bottom: var(--home-rule) solid var(--ink-deep);
  padding-block: var(--home-pad);
}

.page-home .login .mono {
  color: var(--gold-dim);
}

.page-home .login__head {
  max-width: 44em;
}

.page-home .login__head h2 {
  color: var(--gold-light);
  font-size: clamp(1.6rem, 3.4vw, 2.5rem);
  line-height: 1.35;
}

.page-home .login__head p {
  margin-top: 1rem;
  line-height: 1.85;
  color: rgba(247, 245, 240, 0.86);
}

.page-home .login__cols {
  display: grid;
  gap: 1.25rem;
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
}

.page-home .login__col {
  border: var(--home-rule) solid var(--gold-dim);
  background: var(--ink-deep);
  padding: 1.5rem 1.4rem;
  box-shadow: var(--shadow-gold);
}

.page-home .login__tag {
  display: inline-block;
  padding: 0.25rem 0.6rem;
  margin-bottom: 1.1rem;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-size: 0.72rem;
}

.page-home .login__steps {
  padding-left: 1.25rem;
  display: grid;
  gap: 0.7rem;
  font-size: 0.92rem;
  line-height: 1.75;
  color: rgba(247, 245, 240, 0.9);
}

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

.page-home .login__note {
  margin-top: 1.2rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(227, 210, 176, 0.28);
  font-size: 0.84rem;
  line-height: 1.75;
  color: rgba(227, 210, 176, 0.82);
}

.page-home .login__figure {
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  border: var(--home-rule) solid var(--ink-deep);
  box-shadow: var(--shadow-md);
  background: var(--ink-deep);
}

.page-home .login__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

.page-home .login__figure figcaption {
  padding: 0.6rem 0.9rem;
  background: var(--ink-deep);
  color: var(--gold-light);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
}

.page-home .login__more {
  margin-top: 1.75rem;
}

.page-home .link-arrow--light {
  color: var(--gold-light);
  border-bottom-color: var(--gold-dim);
}

.page-home .link-arrow--light:hover,
.page-home .link-arrow--light:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* ---------- 新用户三步 ---------- */
.page-home .start {
  background: var(--mist);
  border-bottom: var(--home-rule) solid var(--ink-deep);
  padding-block: var(--home-pad);
}

.page-home .start__head {
  max-width: 44em;
}

.page-home .start__eyebrow {
  color: var(--copper);
  margin-bottom: 0.85rem;
}

.page-home .start__head h2 {
  font-size: clamp(1.6rem, 3.4vw, 2.5rem);
  line-height: 1.35;
}

.page-home .start__lead {
  margin-top: 1rem;
  line-height: 1.85;
}

.page-home .start__steps {
  list-style: none;
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
  padding: 0;
  display: grid;
  gap: 1.1rem;
}

.page-home .start__step {
  background: var(--paper);
  border: var(--home-rule) solid var(--ink-deep);
  padding: 1.4rem;
}

.page-home .start__no {
  display: inline-block;
  padding: 0.22rem 0.55rem;
  margin-bottom: 0.9rem;
  background: var(--ink-green);
  color: var(--gold);
  font-size: 0.72rem;
}

.page-home .start__step h3 {
  font-size: 1.08rem;
  margin-bottom: 0.6rem;
}

.page-home .start__step p {
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--graphite);
}

.page-home .start__more {
  margin-top: 1.75rem;
}

/* ---------- 专栏看点 ---------- */
.page-home .column {
  background: var(--paper);
  padding-block: var(--home-pad);
}

.page-home .column__head {
  max-width: 40em;
}

.page-home .column__eyebrow {
  color: var(--copper);
  margin-bottom: 0.85rem;
}

.page-home .column__head h2 {
  font-size: clamp(1.6rem, 3.4vw, 2.5rem);
  line-height: 1.35;
}

.page-home .column__list {
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
  border-top: var(--home-rule) solid var(--ink-deep);
}

.page-home .column__item {
  display: grid;
  gap: 0.55rem;
  padding: 1.35rem 0.5rem;
  border-bottom: var(--home-rule) solid var(--ink-deep);
  color: inherit;
  text-decoration: none;
  transition: background-color var(--dur) var(--ease),
    padding-left var(--dur) var(--ease);
}

.page-home .column__item:hover,
.page-home .column__item:focus-visible {
  background: var(--mist);
  padding-left: 1.1rem;
  outline: none;
}

.page-home .column__item:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: -3px;
}

.page-home .column__tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--copper);
}

.page-home .column__body h3 {
  font-size: 1.05rem;
  line-height: 1.6;
  margin-bottom: 0.4rem;
}

.page-home .column__body p {
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--graphite);
  max-width: 46em;
}

.page-home .column__go {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--gold);
  justify-self: start;
}

.page-home .column__foot {
  margin-top: 1.75rem;
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--graphite);
}

.page-home .column__foot .link-arrow {
  margin-left: 0.35rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-home .hero__entries {
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
  }
}

@media (min-width: 860px) {
  .page-home .cats__grid {
    grid-template-columns: 1.12fr 1fr 1.12fr;
    gap: 1.5rem;
    align-items: start;
  }
  .page-home .cat--b {
    transform: translateY(-0.6rem);
  }
  .page-home .login__cols {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
  .page-home .column__item {
    grid-template-columns: 13rem minmax(0, 1fr) 2.5rem;
    align-items: start;
    gap: 1.5rem;
  }
  .page-home .column__go {
    justify-self: end;
  }
}

@media (min-width: 880px) {
  .page-home .band__intro {
    grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
  }
}

@media (min-width: 900px) {
  .page-home .hero__grid {
    grid-template-columns: minmax(0, 3.5fr) minmax(0, 6.5fr);
  }
}

@media (min-width: 800px) {
  .page-home .start__steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
  }
  .page-home .start__step {
    border-left: 0;
  }
  .page-home .start__step:first-child {
    border-left: var(--home-rule) solid var(--ink-deep);
  }
}

@media (min-width: 960px) {
  .page-home .track {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
  .page-home .track__node {
    border-left: 0;
    border-top: var(--home-rule) solid var(--ink-deep);
    padding: 1.55rem 1.1rem 0 0;
    margin-bottom: 0;
    transition: border-top-color var(--dur) var(--ease);
  }
  .page-home .track__node:hover {
    border-top-color: var(--gold);
  }
  .page-home .track__dot {
    left: 0;
    top: -7px;
    background: var(--gold);
    transition: background-color var(--dur) var(--ease),
      border-color var(--dur) var(--ease);
  }
  .page-home .track__node:hover .track__dot {
    background: var(--ink-green);
    border-color: var(--copper);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home * {
    transition-duration: 1ms !important;
  }
}