.page-home {
  --home-edge: 2px solid var(--paper-20);
  --home-shadow: 6px 6px 0 var(--ink-deep);
  --home-shadow-sm: 4px 4px 0 var(--ink-deep);
  --home-tint: rgba(18, 43, 68, 0.72);
  --home-hair: 2px solid var(--paper-14);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  line-height: 1.75;
  overflow-x: hidden;
}

.page-home > section {
  width: min(1400px, 100%);
  margin-inline: auto;
  padding-inline: clamp(1.1rem, 5vw, 3.5rem);
  padding-block: clamp(2.25rem, 5.5vw, 4.5rem);
}

.page-home > section + section {
  border-top: var(--home-edge);
}

.page-home h1,
.page-home h2,
.page-home h3,
.page-home h4 {
  margin: 0;
  font-family: var(--font-display);
  letter-spacing: 0.03em;
  line-height: 1.25;
  color: var(--paper);
}

.page-home p {
  margin: 0;
}

.page-home details > summary {
  list-style: none;
  cursor: pointer;
}

.page-home details > summary::-webkit-details-marker {
  display: none;
}

.page-home .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  color: var(--gold);
  text-transform: uppercase;
}

/* ---------- 首屏 ---------- */

.page-home > section.home-brief {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 2.6rem);
  padding-block: clamp(1.5rem, 3.5vw, 2.6rem) clamp(2.5rem, 6vw, 4.5rem);
}

.brief-copy {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-width: 0;
}

.home-crumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--paper-62);
}

.home-crumb li + li::before {
  content: "/";
  margin-right: 0.45rem;
  color: var(--cyan);
}

.home-crumb a {
  color: var(--paper-62);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.home-crumb a:hover,
.home-crumb a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
  outline: none;
}

.brief-copy h1 {
  font-size: clamp(1.85rem, 5.2vw, 3.3rem);
  letter-spacing: 0.03em;
  line-height: 1.12;
}

.brief-copy h1 em {
  font-style: normal;
  color: var(--cyan);
}

.brief-lede {
  max-width: 34rem;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--paper-62);
}

.brief-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-block: 0.2rem 0.3rem;
}

.brief-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.6rem;
  margin: 0;
  padding: 0;
}

.brief-stats > div {
  border: var(--home-edge);
  border-left: 3px solid var(--cyan);
  background: rgba(18, 43, 68, 0.6);
  padding: 0.6rem 0.75rem;
}

.brief-stats dt {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--paper-62);
}

.brief-stats dd {
  margin: 0.15rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.brief-stats .num {
  font-size: 1.35rem;
  line-height: 1;
  color: var(--gold);
}

.brief-board {
  position: relative;
  min-width: 0;
  border: var(--home-edge);
  background: var(--ink-panel);
  box-shadow: var(--home-shadow);
  padding: clamp(0.8rem, 2vw, 1.3rem);
  overflow: hidden;
}

.brief-board__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
  pointer-events: none;
}

.brief-dir {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.65rem;
}

.dir-card {
  display: grid;
  gap: 0.2rem;
  padding: 0.8rem 0.85rem;
  background: rgba(11, 27, 43, 0.88);
  border: var(--home-edge);
  text-decoration: none;
  color: var(--paper);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.dir-card:hover,
.dir-card:focus-visible {
  border-color: var(--cyan);
  transform: translate(-2px, -2px);
  box-shadow: var(--home-shadow-sm);
  outline: none;
}

.dir-card__no {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.dir-card__name {
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.05em;
}

.dir-card__desc {
  font-size: 0.82rem;
  line-height: 1.62;
  color: var(--paper-62);
}

/* ---------- 章节头 ---------- */

.sec-head {
  display: grid;
  gap: 0.45rem;
  margin-bottom: clamp(1.2rem, 3vw, 2rem);
  padding-bottom: 0.9rem;
  border-bottom: var(--home-edge);
}

.sec-head h2 {
  font-size: clamp(1.35rem, 3.6vw, 2.05rem);
}

.sec-head p:not(.eyebrow) {
  max-width: 46rem;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--paper-62);
}

.inline-link {
  display: inline-block;
  margin-top: 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 2px solid var(--cyan-35);
  padding-bottom: 0.1rem;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.inline-link:hover,
.inline-link:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
  outline: none;
}

/* ---------- 分区索引 ---------- */

.index-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.1rem, 3vw, 1.8rem);
}

.type-groups,
.room-band {
  min-width: 0;
  border: var(--home-edge);
  background: var(--home-tint);
  padding: clamp(1rem, 2.4vw, 1.4rem);
  box-shadow: var(--home-shadow);
}

.type-groups h3,
.room-band h3,
.rank-ladder h3,
.perk-panel h3,
.start-notes h3,
.service-card h3,
.trust-panel h3 {
  font-size: 1rem;
  letter-spacing: 0.08em;
  color: var(--cyan);
  padding-bottom: 0.6rem;
  border-bottom: var(--home-hair);
  margin-bottom: 0.9rem;
}

.type-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.3rem;
}

.type-list li {
  display: grid;
  grid-template-columns: 2.1rem minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 0.55rem;
  padding: 0.45rem 0.5rem;
  border-left: 3px solid transparent;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.type-list li:hover {
  border-left-color: var(--gold);
  background: rgba(242, 184, 75, 0.07);
}

.type-list__no {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.type-list__name {
  font-size: 0.93rem;
  color: var(--paper);
}

.type-list__count {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--gold);
  white-space: nowrap;
}

.type-list__note {
  grid-column: 2 / -1;
  font-size: 0.79rem;
  line-height: 1.55;
  color: var(--paper-62);
}

.room-band__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  margin-block: 0.2rem 0.9rem;
  border: 2px solid var(--ink-deep);
  background: var(--ink);
}

.room-tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.room-tags li {
  display: grid;
  grid-template-columns: 5.4rem minmax(0, 1fr);
  align-items: start;
  gap: 0.7rem;
}

.room-tags p {
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--paper-62);
}

.room-chip {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  text-align: center;
  padding: 0.2rem 0.35rem;
  color: var(--ink-deep);
  white-space: nowrap;
}

.room-chip--coral {
  background: var(--coral);
}

.room-chip--magenta {
  background: var(--magenta);
}

.room-chip--orange {
  background: var(--orange);
}

.room-band__foot {
  margin-top: 1rem;
  padding-top: 0.7rem;
  border-top: var(--home-hair);
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--paper-62);
}

/* ---------- 段位与权益 ---------- */

.rank-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.1rem, 3vw, 1.8rem);
}

.rank-ladder {
  min-width: 0;
  border: var(--home-edge);
  background: rgba(18, 43, 68, 0.46);
  padding: clamp(1rem, 2.4vw, 1.4rem);
}

.ladder {
  list-style: none;
  margin: 0;
  padding: 0 0 0 1rem;
  border-left: 3px solid var(--violet);
}

.ladder__item {
  position: relative;
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr);
  gap: 0.7rem;
  padding-block: 0.65rem;
}

.ladder__item::before {
  content: "";
  position: absolute;
  left: -1.42rem;
  top: 1.15rem;
  width: 9px;
  height: 9px;
  background: var(--gold);
  border: 2px solid var(--ink-deep);
  transform: rotate(45deg);
}

.ladder__no {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--cyan);
  padding-top: 0.15rem;
}

.ladder__body h4 {
  font-size: 1rem;
  letter-spacing: 0.1em;
  color: var(--paper);
  margin-bottom: 0.15rem;
}

.ladder__body p {
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--paper-62);
}

.perk-panel {
  min-width: 0;
  border: var(--home-edge);
  background: var(--home-tint);
  padding: clamp(1rem, 2.4vw, 1.4rem);
  box-shadow: var(--home-shadow);
}

.perk-visual {
  margin-bottom: 0.9rem;
  border: 2px solid var(--ink-deep);
  overflow: hidden;
}

.perk-visual img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  max-height: 300px;
  object-fit: cover;
  object-position: center top;
}

.perk-list {
  display: grid;
  gap: 0.5rem;
}

.perk {
  border: var(--home-edge);
  background: rgba(11, 27, 43, 0.78);
  transition: border-color var(--dur) var(--ease);
}

.perk:hover,
.perk[open] {
  border-color: var(--gold);
}

.perk__head {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 0.75rem;
}

.perk__no {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.perk__name {
  font-size: 0.93rem;
  color: var(--paper);
}

.perk[open] .perk__name {
  color: var(--gold);
}

.perk__head::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--paper-62);
}

.perk[open] .perk__head::after {
  content: "−";
  color: var(--gold);
}

.perk__body {
  margin: 0 0.75rem 0.75rem;
  padding-top: 0.6rem;
  border-top: var(--home-hair);
  font-size: 0.84rem;
  line-height: 1.72;
  color: var(--paper-62);
}

/* ---------- 新手路径与更新 ---------- */

.start-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.1rem, 3vw, 1.8rem);
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  align-content: start;
}

.step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem;
  padding-block: 0.95rem;
  border-bottom: 2px dashed var(--paper-20);
}

.step:first-child {
  padding-top: 0.2rem;
}

.step:last-child {
  border-bottom: none;
}

.step__no {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  line-height: 1;
  color: var(--cyan);
  letter-spacing: 0.04em;
}

.step__body h3 {
  font-size: 1.02rem;
  letter-spacing: 0.06em;
  margin-bottom: 0.25rem;
}

.step__body p {
  font-size: 0.88rem;
  line-height: 1.72;
  color: var(--paper-62);
}

.start-notes {
  min-width: 0;
  border: var(--home-edge);
  background: rgba(18, 43, 68, 0.42);
  padding: clamp(1rem, 2.4vw, 1.4rem);
  box-shadow: var(--home-shadow);
}

.notes-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  margin-bottom: 1rem;
  border: 2px solid var(--ink-deep);
}

.note-list {
  display: grid;
  gap: 0.45rem;
}

.note {
  border-left: 3px solid var(--paper-14);
  background: rgba(11, 27, 43, 0.7);
  transition: border-color var(--dur) var(--ease);
}

.note:hover,
.note[open] {
  border-left-color: var(--cyan);
}

.note__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.55rem;
  padding: 0.55rem 0.7rem;
}

.note__tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--ink-deep);
  background: var(--gold);
  padding: 0.1rem 0.4rem;
  white-space: nowrap;
}

.note__title {
  font-size: 0.9rem;
  color: var(--paper);
}

.note__body {
  margin: 0 0.7rem 0.65rem;
  padding-top: 0.55rem;
  border-top: var(--home-hair);
  font-size: 0.83rem;
  line-height: 1.7;
  color: var(--paper-62);
}

.notes-foot {
  margin-top: 0.9rem;
  font-size: 0.78rem;
  line-height: 1.65;
  color: var(--paper-62);
}

/* ---------- 服务与联系 ---------- */

.service-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.1rem, 3vw, 1.8rem);
}

.service-card,
.trust-panel {
  min-width: 0;
  border: var(--home-edge);
  background: var(--home-tint);
  padding: clamp(1rem, 2.4vw, 1.4rem);
  box-shadow: var(--home-shadow);
}

.trust-panel {
  background: var(--paper);
  color: var(--ink);
}

.trust-panel h3 {
  color: var(--ink);
  border-bottom-color: rgba(11, 27, 43, 0.2);
}

.contact-list {
  margin: 0;
  display: grid;
  gap: 0.65rem;
}

.contact-list > div {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.1rem;
  padding-bottom: 0.6rem;
  border-bottom: var(--home-hair);
}

.contact-list > div:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.contact-list dt {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--paper-62);
}

.contact-list dd {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.contact-list a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 2px solid var(--cyan-35);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.contact-list a:hover,
.contact-list a:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
  outline: none;
}

.service-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.1rem;
  margin-top: 1rem;
  padding-top: 0.8rem;
  border-top: var(--home-edge);
}

.service-links .inline-link {
  margin-top: 0;
}

.trust-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.trust-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 0.7rem;
}

.trust-num {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  line-height: 1;
  color: var(--ink);
  background: var(--gold);
  padding: 0.15rem 0.45rem;
}

.trust-txt {
  font-size: 0.86rem;
  line-height: 1.68;
  color: rgba(11, 27, 43, 0.82);
}

.trust-foot {
  margin-top: 0.9rem;
  padding-top: 0.7rem;
  border-top: 2px solid rgba(11, 27, 43, 0.2);
  font-size: 0.8rem;
  line-height: 1.68;
  color: rgba(11, 27, 43, 0.78);
}

.trust-foot--legal {
  margin-top: 0.5rem;
  padding-top: 0;
  border-top: none;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--ink-panel);
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .brief-dir {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contact-list > div {
    grid-template-columns: 5.6rem minmax(0, 1fr);
    gap: 0.6rem;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-home > section.home-brief {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
    gap: clamp(1.5rem, 3vw, 2.4rem);
  }

  .brief-board {
    margin-top: 0.4rem;
  }
}

@media (min-width: 960px) {
  .index-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }

  .rank-split {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 1fr);
    align-items: start;
  }

  .start-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr);
    align-items: start;
  }

  .service-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }

  .type-groups {
    margin-top: 0.6rem;
  }

  .start-notes {
    margin-top: 0.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .dir-card,
  .page-home .inline-link,
  .page-home .type-list li,
  .page-home .note,
  .page-home .perk,
  .page-home .home-crumb a,
  .page-home .contact-list a {
    transition: none;
  }

  .page-home .dir-card:hover,
  .page-home .dir-card:focus-visible {
    transform: none;
  }
}