.page-contact {
  --contact-corner: 22px;
  --contact-rule: rgba(123, 218, 255, 0.18);
  --contact-panel: #071a2e;
  display: block;
  overflow-x: clip;
  color: var(--ink);
  background:
    radial-gradient(120% 55% at 84% -8%, rgba(142, 124, 255, 0.16), transparent 62%),
    linear-gradient(180deg, var(--bg-0) 0%, var(--bg-1) 42%, var(--bg-0) 100%);
}

.page-contact .eyebrow {
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-contact .display-title {
  margin: 0.15em 0 0.4em;
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 11vw, 5.5rem);
  font-weight: 800;
  line-height: 0.94;
  letter-spacing: 0.01em;
  color: var(--ink);
  text-shadow: 0 0 34px rgba(77, 245, 255, 0.18);
}

.page-contact .section-title {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4.8vw, 2.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-contact .lede {
  margin: 0;
  max-width: 58ch;
  color: var(--muted);
  font-size: clamp(0.95rem, 2.4vw, 1.06rem);
  line-height: 1.85;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  padding-block: clamp(1.25rem, 3vw, 2rem) clamp(2.5rem, 6vw, 4.5rem);
  border-bottom: 1px solid var(--contact-rule);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, rgba(123, 218, 255, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(123, 218, 255, 0.06) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(125% 95% at 18% 0%, #000 0%, transparent 74%);
  mask-image: radial-gradient(125% 95% at 18% 0%, #000 0%, transparent 74%);
  pointer-events: none;
}

.page-contact .contact-hero__shell {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  margin-top: clamp(1rem, 2.5vw, 1.75rem);
  align-items: start;
}

.page-contact .contact-channels {
  list-style: none;
  margin: clamp(1.5rem, 3vw, 2.25rem) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--contact-rule);
  border: 1px solid var(--contact-rule);
}

.page-contact .contact-channel {
  display: grid;
  gap: 0.3rem 1rem;
  padding: 0.9rem 1rem;
  background: var(--bg-1);
}

.page-contact .contact-channel__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--orange);
}

.page-contact .contact-channel__value {
  font-family: var(--font-mono);
  font-size: clamp(0.92rem, 2.6vw, 1.02rem);
  line-height: 1.6;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-contact .contact-channel__hint {
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--muted);
}

.page-contact .contact-channel--key {
  background: linear-gradient(90deg, rgba(255, 63, 164, 0.16), var(--bg-1) 62%);
  box-shadow: inset 3px 0 0 var(--magenta);
}

.page-contact .contact-channel--key .contact-channel__value {
  color: #ffffff;
}

.page-contact .contact-hero__visual {
  position: relative;
}

.page-contact .contact-hero__visual .media-frame {
  position: relative;
  margin: 0;
  aspect-ratio: 16 / 12;
  overflow: hidden;
  background: var(--bg-2);
  clip-path: polygon(0 0, calc(100% - var(--contact-corner)) 0, 100% var(--contact-corner), 100% 100%, var(--contact-corner) 100%, 0 calc(100% - var(--contact-corner)));
  box-shadow: inset 0 0 0 1px var(--line-strong);
}

.page-contact .media-frame__img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.88) contrast(1.08);
}

.page-contact .media-frame__scan {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 0%, rgba(77, 245, 255, 0.16) 48%, transparent 53%);
  mix-blend-mode: screen;
}

.page-contact .media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 0.75rem 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.55;
  color: var(--muted);
  background: linear-gradient(180deg, transparent, rgba(4, 9, 18, 0.94));
}

/* ---------- 问题分类 ---------- */
.page-contact .kind-list {
  list-style: none;
  margin: clamp(1.5rem, 4vw, 2.5rem) 0 0;
  padding: 0;
  border-top: 1px solid var(--contact-rule);
}

.page-contact .kind {
  display: grid;
  gap: 0.45rem 1.5rem;
  padding: clamp(1.1rem, 3vw, 1.75rem) 0.6rem;
  border-bottom: 1px solid var(--contact-rule);
  transition: background-color 0.3s var(--ease);
}

.page-contact .kind:hover {
  background: linear-gradient(90deg, rgba(77, 245, 255, 0.07), transparent 72%);
}

.page-contact .kind__index {
  font-family: var(--font-mono);
  font-size: clamp(1.05rem, 3vw, 1.45rem);
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-contact .kind__title {
  margin: 0 0 0.4rem;
  font-size: clamp(1.05rem, 2.7vw, 1.32rem);
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink);
}

.page-contact .kind__desc {
  margin: 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.8;
}

.page-contact .kind__meta {
  margin: 0.65rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  line-height: 1.7;
  color: var(--orange);
}

/* ---------- 处理路径 ---------- */
.page-contact .contact-flow {
  background: linear-gradient(180deg, rgba(10, 28, 51, 0.72), transparent 82%);
  border-block: 1px solid var(--contact-rule);
}

.page-contact .flow-list {
  list-style: none;
  margin: clamp(1.5rem, 4vw, 2.5rem) 0 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-contact .flow-step {
  position: relative;
  padding: 1.2rem 1.1rem 1.4rem;
  background: linear-gradient(170deg, var(--panel-strong), var(--panel));
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
  box-shadow: inset 0 0 0 1px var(--contact-rule);
}

.page-contact .flow-step__num {
  display: inline-block;
  margin-bottom: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--orange);
}

.page-contact .flow-step__title {
  margin: 0 0 0.45rem;
  font-size: 1.06rem;
  font-weight: 700;
  color: var(--ink);
}

.page-contact .flow-step__desc {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.75;
}

/* ---------- 写信要点 ---------- */
.page-contact .contact-write__shell {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  align-items: start;
}

.page-contact .write-list {
  list-style: none;
  margin: clamp(1.25rem, 3vw, 2rem) 0 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.page-contact .write-list li {
  padding: 0.85rem 1rem;
  border-left: 2px solid var(--line-strong);
  background: linear-gradient(90deg, rgba(77, 245, 255, 0.08), transparent 88%);
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.8;
}

.page-contact .write-list__key {
  display: block;
  margin-bottom: 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-contact .write-note {
  margin: 1.1rem 0 0;
  padding-left: 0.9rem;
  border-left: 2px solid var(--orange);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  line-height: 1.75;
  color: var(--dim);
}

.page-contact .contact-write__figure {
  position: relative;
  margin: 0;
  aspect-ratio: 900 / 560;
  overflow: hidden;
  background: var(--bg-2);
  clip-path: polygon(0 0, calc(100% - var(--contact-corner)) 0, 100% var(--contact-corner), 100% 100%, 0 100%);
  box-shadow: inset 0 0 0 1px var(--contact-rule);
}

/* ---------- 常见问题 ---------- */
.page-contact .faq-list {
  margin-top: clamp(1.25rem, 3vw, 2rem);
  border-top: 1px solid var(--contact-rule);
}

.page-contact .faq {
  border-bottom: 1px solid var(--contact-rule);
}

.page-contact .faq__q {
  display: flex;
  gap: 0.85rem;
  align-items: baseline;
  padding: 1rem 0.25rem;
  cursor: pointer;
  list-style: none;
  font-size: clamp(1rem, 2.5vw, 1.1rem);
  font-weight: 600;
  color: var(--ink);
}

.page-contact .faq__q::-webkit-details-marker {
  display: none;
}

.page-contact .faq__q::before {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--cyan);
  transition: color 0.25s var(--ease);
}

.page-contact .faq[open] .faq__q::before {
  content: "−";
  color: var(--magenta);
}

.page-contact .faq__q:hover::before {
  color: var(--orange);
}

.page-contact .faq__q:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.page-contact .faq__a {
  padding: 0 0.25rem 1.15rem 1.95rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.85;
}

.page-contact .faq__a p {
  margin: 0;
  max-width: 66ch;
}

/* ---------- 快速入口 ---------- */
.page-contact .contact-next__panel {
  padding: clamp(1.5rem, 4vw, 2.75rem);
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 28px 100%, 0 calc(100% - 28px));
  background:
    radial-gradient(95% 130% at 100% 0%, rgba(142, 124, 255, 0.2), transparent 62%),
    linear-gradient(160deg, var(--panel-strong), var(--bg-0));
  box-shadow: inset 0 0 0 1px var(--line-strong);
}

.page-contact .next-list {
  list-style: none;
  margin: clamp(1rem, 3vw, 1.75rem) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--contact-rule);
  border: 1px solid var(--contact-rule);
}

.page-contact .next-link {
  display: grid;
  gap: 0.25rem;
  padding: 1rem 1.1rem;
  background: var(--bg-1);
  color: var(--ink);
  font-weight: 600;
  text-decoration: none;
  transition: background-color 0.25s var(--ease), color 0.25s var(--ease);
}

.page-contact .next-link:hover,
.page-contact .next-link:focus-visible {
  background: var(--cyan-soft);
  color: var(--cyan);
}

.page-contact .next-link:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: -2px;
}

.page-contact .next-link__meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .contact-channel {
    grid-template-columns: 7.5rem minmax(0, 1fr);
    align-items: baseline;
    padding: 1rem 1.15rem;
  }

  .page-contact .contact-channel__hint {
    grid-column: 2;
  }
}

@media (min-width: 760px) {
  .page-contact .kind {
    grid-template-columns: 5rem minmax(0, 1fr);
    padding-inline: 0.75rem;
  }

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

@media (min-width: 900px) {
  .page-contact .contact-hero__shell {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: center;
  }

  .page-contact .contact-hero__visual .media-frame {
    aspect-ratio: 7 / 9;
  }

  .page-contact .flow-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.75rem;
    position: relative;
  }

  .page-contact .flow-list::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 3.2rem;
    height: 1px;
    background: linear-gradient(90deg, var(--cyan), var(--violet) 55%, var(--magenta));
    opacity: 0.5;
    pointer-events: none;
  }

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

@media (min-width: 1180px) {
  .page-contact .contact-hero__shell {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
    gap: 4rem;
  }

  .page-contact .kind__desc {
    font-size: 1rem;
  }
}