.page-contact {
  --ct-line: 1px solid var(--a8-ash);
  --ct-soft: 1px solid rgba(43, 53, 80, 0.62);
  --ct-line-paper: 1px solid rgba(243, 240, 231, 0.16);
  position: relative;
  overflow-x: clip;
  background: var(--a8-void);
  color: var(--a8-paper);
}

.page-contact .ct-crumb {
  padding-top: clamp(1rem, 3vw, 1.75rem);
  padding-bottom: clamp(0.75rem, 2vw, 1.25rem);
}

/* ---------- 首屏 ---------- */

.page-contact .ct-hero {
  position: relative;
  padding: clamp(1.5rem, 4vw, 3rem) 0 clamp(2.5rem, 6vw, 5rem);
  background:
    radial-gradient(115% 90% at 88% 4%, rgba(53, 241, 222, 0.11), transparent 62%),
    linear-gradient(180deg, var(--a8-void) 0%, #06101F 100%);
}

.page-contact .ct-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 5vw, 3.25rem);
  align-items: center;
}

.page-contact .ct-hero__label {
  margin: 0 0 clamp(0.75rem, 2vw, 1.15rem);
  color: var(--a8-cyan);
}

.page-contact .ct-hero__title {
  margin: 0;
  font-family: var(--a8-font-display);
  font-weight: 900;
  font-size: clamp(2.4rem, 8vw, 5.2rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
  color: var(--a8-paper);
  text-wrap: balance;
}

.page-contact .ct-hero__sub {
  margin: clamp(1rem, 2.6vw, 1.5rem) 0 0;
  max-width: 60ch;
  color: var(--a8-slate);
}

.page-contact .ct-channels {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
  background: var(--a8-ash);
  border: var(--ct-line);
}

.page-contact .ct-channel {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: clamp(1rem, 3vw, 1.35rem) clamp(1rem, 3vw, 1.4rem);
  background: var(--a8-panel);
  color: var(--a8-paper);
  text-decoration: none;
  transition: background var(--a8-dur) var(--a8-ease), transform var(--a8-dur) var(--a8-ease);
}

.page-contact .ct-channel:hover {
  background: #101A33;
  transform: translateY(-2px);
}

.page-contact .ct-channel:focus-visible {
  outline: 2px solid var(--a8-cyan);
  outline-offset: 2px;
}

.page-contact .ct-channel__k {
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--a8-slate);
}

.page-contact .ct-channel__v {
  font-family: var(--a8-font-display);
  font-weight: 800;
  font-size: clamp(1rem, 3.6vw, 1.55rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  overflow-wrap: anywhere;
  transition: color var(--a8-dur) var(--a8-ease);
}

.page-contact .ct-channel:hover .ct-channel__v {
  color: var(--a8-cyan);
}

.page-contact .ct-hero__figure {
  margin: 0;
}

.page-contact .ct-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  border: var(--ct-line);
  filter: saturate(1.05) contrast(1.02);
}

.page-contact .ct-hero__figure figcaption {
  margin-top: 0.75rem;
  font-size: 0.8125rem;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--a8-slate);
}

/* ---------- 渠道选择 ---------- */

.page-contact .ct-choose {
  background: var(--a8-void);
}

.page-contact .ct-choose__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
  background: var(--a8-ash);
  border: var(--ct-line);
}

.page-contact .ct-card {
  padding: clamp(1.25rem, 3.5vw, 2.25rem);
  background: var(--a8-void);
  transition: background var(--a8-dur) var(--a8-ease);
}

.page-contact .ct-card:hover {
  background: #08101F;
}

.page-contact .ct-card__title {
  margin: 0 0 0.9rem;
  font-family: var(--a8-font-display);
  font-weight: 800;
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
  line-height: 1.28;
  letter-spacing: -0.015em;
  color: var(--a8-paper);
}

.page-contact .ct-card p {
  margin: 0 0 0.9rem;
  max-width: 58ch;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--a8-slate);
}

.page-contact .ct-card__meta {
  margin: 0;
  padding-top: 0.9rem;
  border-top: var(--ct-soft);
  font-size: 0.875rem;
  line-height: 1.7;
  letter-spacing: 0.01em;
  color: var(--a8-pitch);
}

/* ---------- 咨询范围 ---------- */

.page-contact .ct-scope {
  background: var(--a8-turf);
}

.page-contact .ct-scope .a8-tag__no,
.page-contact .ct-scope .a8-tag {
  color: var(--a8-cyan);
}

.page-contact .ct-scope__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: clamp(1.5rem, 4vw, 2.5rem) 0 0;
  padding: 0;
  list-style: none;
  background: rgba(243, 240, 231, 0.16);
  border-top: var(--ct-line-paper);
  border-bottom: var(--ct-line-paper);
}

.page-contact .ct-scope__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(0.85rem, 2.5vw, 1.35rem);
  padding: clamp(1.15rem, 3vw, 1.85rem) clamp(1rem, 3vw, 1.75rem);
  background: var(--a8-turf);
}

.page-contact .ct-scope__no {
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  line-height: 1.25;
  letter-spacing: 0.05em;
  color: var(--a8-cyan);
}

.page-contact .ct-scope__item h3 {
  margin: 0 0 0.6rem;
  font-family: var(--a8-font-display);
  font-weight: 800;
  font-size: clamp(1.05rem, 2.1vw, 1.35rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--a8-paper);
}

.page-contact .ct-scope__item p {
  margin: 0;
  max-width: 54ch;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: #B9C4D6;
}

.page-contact .ct-scope__note {
  margin: clamp(1.25rem, 3vw, 2rem) 0 0;
  max-width: 66ch;
  padding-left: 1rem;
  border-left: 2px solid var(--a8-orange);
  color: var(--a8-slate);
  line-height: 1.75;
}

.page-contact .ct-scope__note a,
.page-contact .ct-collab__lead a,
.page-contact .ct-collab__item a,
.page-contact .ct-filing__note a {
  color: var(--a8-cyan);
  text-decoration: underline;
  text-decoration-color: rgba(53, 241, 222, 0.4);
  text-underline-offset: 3px;
  transition: text-decoration-color var(--a8-dur) var(--a8-ease), color var(--a8-dur) var(--a8-ease);
}

.page-contact .ct-scope__note a:hover,
.page-contact .ct-collab__lead a:hover,
.page-contact .ct-collab__item a:hover,
.page-contact .ct-filing__note a:hover {
  color: var(--a8-orange);
  text-decoration-color: var(--a8-orange);
}

/* ---------- 合作与反馈 ---------- */

.page-contact .ct-collab {
  background: var(--a8-indigo);
}

.page-contact .ct-collab__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
}

.page-contact .ct-collab__lead p {
  margin: clamp(1rem, 2.5vw, 1.4rem) 0 0;
  max-width: 56ch;
  line-height: 1.75;
  color: #BEB4DC;
}

.page-contact .ct-collab__list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: rgba(243, 240, 231, 0.16);
  border-top: var(--ct-line-paper);
  border-bottom: var(--ct-line-paper);
}

.page-contact .ct-collab__item {
  padding: clamp(0.95rem, 2.4vw, 1.3rem) clamp(0.9rem, 2.5vw, 1.35rem);
  background: var(--a8-indigo);
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--a8-paper);
}

.page-contact .ct-collab__item::before {
  content: "—";
  margin-right: 0.6rem;
  color: var(--a8-orange);
}

/* ---------- 备案与地址 ---------- */

.page-contact .ct-filing {
  margin-top: clamp(2rem, 6vw, 4rem);
  background: var(--a8-oxblood);
}

.page-contact .ct-filing__figure {
  margin: 0;
  position: relative;
}

.page-contact .ct-filing__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(59, 18, 32, 0.15) 0%, rgba(59, 18, 32, 0.92) 100%);
  pointer-events: none;
}

.page-contact .ct-filing__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.page-contact .ct-filing__inner {
  padding: clamp(1.5rem, 4vw, 2.5rem) 0 clamp(2.5rem, 6vw, 4rem);
}

.page-contact .ct-filing__dl {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: clamp(1.25rem, 3vw, 2rem) 0 0;
  padding: 0;
  background: rgba(243, 240, 231, 0.18);
  border-top: var(--ct-line-paper);
  border-bottom: var(--ct-line-paper);
}

.page-contact .ct-filing__dl > div {
  display: grid;
  gap: 0.35rem;
  padding: clamp(1rem, 2.6vw, 1.4rem) clamp(0.9rem, 2.5vw, 1.4rem);
  background: var(--a8-oxblood);
}

.page-contact .ct-filing__dl dt {
  font-size: 12px;
  letter-spacing: 0.22em;
  color: #D9A9B4;
}

.page-contact .ct-filing__dl dd {
  margin: 0;
  font-size: clamp(0.95rem, 1.6vw, 1.1rem);
  line-height: 1.6;
  color: var(--a8-paper);
  overflow-wrap: anywhere;
}

.page-contact .ct-filing__dl dd a {
  color: var(--a8-cyan);
  text-decoration: underline;
  text-decoration-color: rgba(53, 241, 222, 0.4);
  text-underline-offset: 3px;
  transition: color var(--a8-dur) var(--a8-ease), text-decoration-color var(--a8-dur) var(--a8-ease);
}

.page-contact .ct-filing__dl dd a:hover {
  color: var(--a8-orange);
  text-decoration-color: var(--a8-orange);
}

.page-contact .ct-filing__dl dd a:focus-visible {
  outline: 2px solid var(--a8-cyan);
  outline-offset: 2px;
}

.page-contact .ct-filing__note {
  margin: clamp(1.25rem, 3vw, 1.75rem) 0 0;
  max-width: 64ch;
  color: #E0C6CC;
  line-height: 1.75;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-contact .ct-channels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 820px) {
  .page-contact .ct-choose__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .ct-scope__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .ct-filing__dl {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .ct-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }

  .page-contact .ct-collab__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }
}

@media (min-width: 1120px) {
  .page-contact .ct-hero__grid {
    gap: clamp(2.5rem, 4vw, 4rem);
  }

  .page-contact .ct-filing__dl {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .page-contact .ct-channel__v {
    font-size: 1rem;
    letter-spacing: 0;
  }

  .page-contact .ct-scope__item {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-channel,
  .page-contact .ct-channel__v,
  .page-contact .ct-card,
  .page-contact .ct-scope__note a,
  .page-contact .ct-collab__lead a,
  .page-contact .ct-collab__item a,
  .page-contact .ct-filing__dl dd a {
    transition: background-color var(--a8-dur) linear, color var(--a8-dur) linear;
  }

  .page-contact .ct-channel:hover {
    transform: none;
  }
}