.page-contact {
  --pc-gap: clamp(30px, 5vw, 64px);
  --pc-pad: clamp(56px, 8vw, 104px);
  background: var(--ink);
  color: var(--text);
  padding-bottom: clamp(8px, 2vw, 24px);
  overflow-x: clip;
}

.page-contact .breadcrumb {
  padding-top: clamp(18px, 3.5vw, 32px);
}

/* ---------- 首屏分屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding-block: clamp(24px, 4vw, 48px) var(--pc-pad);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(58% 46% at 14% 4%, rgba(123, 77, 255, 0.30), transparent 72%),
    radial-gradient(42% 40% at 96% 82%, rgba(52, 231, 228, 0.10), transparent 70%);
  pointer-events: none;
}

.page-contact .contact-hero__inner {
  position: relative;
  display: grid;
  gap: var(--pc-gap);
}

.page-contact .contact-side__title {
  margin: 14px 0 18px;
  max-width: 14ch;
}

.page-contact .contact-side__lede {
  margin: 0;
  max-width: 36ch;
  color: var(--muted);
  font-size: 16.5px;
  line-height: 1.85;
}

.page-contact .contact-side__sub {
  margin: clamp(32px, 5vw, 48px) 0 22px;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 3vw, 1.3rem);
  font-weight: 800;
  letter-spacing: 0.01em;
  padding-left: 14px;
  border-left: 3px solid var(--violet);
}

/* ---------- 联系方式 ---------- */
.page-contact .channel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 24px;
}

.page-contact .channel {
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line-muted);
}

.page-contact .channel--flat {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .channel__label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-contact .channel__value {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: clamp(1.02rem, 4.2vw, 1.55rem);
  font-weight: 700;
  line-height: 1.35;
  color: var(--text);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  overflow-wrap: anywhere;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease), text-shadow 0.25s var(--ease);
}

.page-contact .channel__value--sm {
  font-size: clamp(0.95rem, 3.2vw, 1.05rem);
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.page-contact a.channel__value:hover,
.page-contact a.channel__value:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
  text-shadow: 0 0 16px rgba(52, 231, 228, 0.45);
}

.page-contact .channel__note {
  display: block;
  margin-top: 9px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 34ch;
}

.page-contact .copy-btn {
  appearance: none;
  margin-top: 14px;
  padding: 7px 16px;
  background: transparent;
  color: var(--cyan);
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease), color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-contact .copy-btn:hover,
.page-contact .copy-btn:focus-visible {
  border-color: var(--cyan);
  box-shadow: var(--glow-cyan);
  outline: none;
}

.page-contact .copy-btn.is-copied {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

.page-contact .team-frame {
  margin: 28px 0 0;
}

.page-contact .media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 问题类型选择器 ---------- */
.page-contact .topic-switch {
  position: relative;
  padding: clamp(20px, 4vw, 38px);
  background: linear-gradient(158deg, rgba(26, 16, 56, 0.94), rgba(11, 7, 24, 0.72));
  border: 1px solid var(--line-violet);
  border-radius: 24px 6px 24px 6px;
  box-shadow: 0 24px 70px rgba(11, 7, 24, 0.6);
}

.page-contact .topic-switch__title {
  margin: 10px 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 4.4vw, 2rem);
  font-weight: 900;
  letter-spacing: -0.015em;
  line-height: 1.25;
}

.page-contact .topic-switch__hint {
  margin: 0 0 24px;
  max-width: 46ch;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.8;
}

.page-contact .topic-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  opacity: 0;
  overflow: hidden;
  clip-path: inset(50%);
}

.page-contact .topic-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.page-contact .topic-tab {
  display: inline-flex;
  align-items: center;
  padding: 9px 16px;
  border: 1px solid var(--line-muted);
  border-radius: var(--radius-pill);
  color: var(--muted);
  font-size: 14px;
  line-height: 1.2;
  cursor: pointer;
  user-select: none;
  transition: color 0.22s var(--ease), border-color 0.22s var(--ease), background 0.22s var(--ease), transform 0.22s var(--ease);
}

.page-contact .topic-tab:hover {
  color: var(--text);
  border-color: var(--line-cyan);
  transform: translateY(-1px);
}

.page-contact #topic-access:checked ~ .topic-tabs .topic-tab[for="topic-access"],
.page-contact #topic-signup:checked ~ .topic-tabs .topic-tab[for="topic-signup"],
.page-contact #topic-record:checked ~ .topic-tabs .topic-tab[for="topic-record"],
.page-contact #topic-rank:checked ~ .topic-tabs .topic-tab[for="topic-rank"],
.page-contact #topic-other:checked ~ .topic-tabs .topic-tab[for="topic-other"] {
  background: var(--orange);
  border-color: var(--orange);
  color: #1a0a02;
  font-weight: 700;
}

.page-contact #topic-access:focus-visible ~ .topic-tabs .topic-tab[for="topic-access"],
.page-contact #topic-signup:focus-visible ~ .topic-tabs .topic-tab[for="topic-signup"],
.page-contact #topic-record:focus-visible ~ .topic-tabs .topic-tab[for="topic-record"],
.page-contact #topic-rank:focus-visible ~ .topic-tabs .topic-tab[for="topic-rank"],
.page-contact #topic-other:focus-visible ~ .topic-tabs .topic-tab[for="topic-other"] {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-contact .topic-panel {
  display: none;
}

.page-contact #topic-access:checked ~ .topic-panels #panel-access,
.page-contact #topic-signup:checked ~ .topic-panels #panel-signup,
.page-contact #topic-record:checked ~ .topic-panels #panel-record,
.page-contact #topic-rank:checked ~ .topic-panels #panel-rank,
.page-contact #topic-other:checked ~ .topic-panels #panel-other {
  display: block;
}

.page-contact .topic-panel {
  padding: clamp(18px, 3.4vw, 28px);
  background: rgba(11, 7, 24, 0.6);
  border: 1px solid var(--line-muted);
  border-radius: 6px 20px 6px 20px;
}

.page-contact .topic-panel__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 800;
  color: var(--cyan);
}

.page-contact .topic-panel__lead {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.8;
}

.page-contact .check-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .check-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14.5px;
  line-height: 1.7;
}

.page-contact .check {
  appearance: none;
  -webkit-appearance: none;
  flex: 0 0 auto;
  position: relative;
  width: 18px;
  height: 18px;
  margin: 3px 0 0;
  border: 1px solid var(--line-cyan);
  border-radius: 4px;
  background: transparent;
  cursor: pointer;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .check:hover {
  border-color: var(--cyan);
}

.page-contact .check:checked {
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-contact .check:checked::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border: solid var(--ink);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

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

.page-contact .check-item label {
  cursor: pointer;
  transition: color 0.2s var(--ease);
}

.page-contact .check:checked + label {
  color: var(--muted);
  text-decoration: line-through;
  text-decoration-color: var(--line-cyan);
}

.page-contact .check-ready {
  display: none;
  margin: 18px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--orange);
}

.page-contact .topic-panel:not(:has(.check:not(:checked))) .check-ready {
  display: block;
}

/* ---------- 反馈准备 ---------- */
.page-contact .feedback {
  padding-block: var(--pc-pad);
  background:
    radial-gradient(70% 60% at 88% 12%, rgba(52, 231, 228, 0.10), transparent 68%),
    linear-gradient(180deg, var(--teal), #082524);
}

.page-contact .feedback__inner {
  display: grid;
  gap: clamp(30px, 5vw, 56px);
  align-items: center;
}

.page-contact .feedback__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4.6vw, 2.3rem);
  font-weight: 900;
  letter-spacing: -0.015em;
  line-height: 1.3;
  max-width: 18ch;
}

.page-contact .info-list {
  list-style: none;
  margin: clamp(26px, 4vw, 36px) 0 0;
  padding: 0;
  display: grid;
  gap: 22px;
}

.page-contact .info-list > li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.page-contact .info-list__num {
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-contact .info-list h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--text);
}

.page-contact .info-list p {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.8;
}

.page-contact .feedback__figure {
  margin: 0 auto;
  width: 100%;
  max-width: 420px;
}

/* ---------- 分工与追问 ---------- */
.page-contact .routing {
  padding-block: var(--pc-pad);
  background: var(--ink-2);
}

.page-contact .routing__title {
  margin: 12px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4.6vw, 2.3rem);
  font-weight: 900;
  letter-spacing: -0.015em;
  line-height: 1.3;
}

.page-contact .routing__lede {
  margin: 0;
  max-width: 56ch;
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.85;
}

.page-contact .routing__grid {
  display: grid;
  gap: 18px;
  margin-top: clamp(28px, 4vw, 40px);
}

.page-contact .group-card {
  padding: clamp(20px, 3.6vw, 32px);
  background: rgba(11, 7, 24, 0.55);
  border: 1px solid var(--line-muted);
  border-radius: 22px 6px 22px 6px;
  transition: border-color 0.28s var(--ease), box-shadow 0.28s var(--ease), transform 0.28s var(--ease);
}

.page-contact .group-card--tech {
  border-color: var(--line-cyan);
}

.page-contact .group-card--live {
  border-color: var(--line-violet);
}

.page-contact .group-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--glow-cyan);
}

.page-contact .group-card__tag {
  display: inline-block;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.page-contact .group-card--tech .group-card__tag {
  background: rgba(52, 231, 228, 0.14);
  color: var(--cyan);
}

.page-contact .group-card--live .group-card__tag {
  background: rgba(245, 200, 107, 0.14);
  color: var(--gold);
}

.page-contact .group-card h3 {
  margin: 16px 0 10px;
  font-family: var(--font-display);
  font-size: 1.16rem;
  font-weight: 800;
  line-height: 1.4;
}

.page-contact .group-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.8;
}

.page-contact .group-card__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-contact .group-card__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
}

.page-contact .group-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 7px;
  height: 7px;
  background: var(--violet);
  border-radius: 2px;
}

.page-contact .group-card--tech .group-card__list li::before {
  background: var(--cyan);
}

.page-contact .follow-up {
  margin-top: clamp(28px, 4.5vw, 48px);
  padding-top: clamp(22px, 3vw, 32px);
  border-top: 1px solid var(--line-muted);
}

.page-contact .follow-up__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 800;
}

.page-contact .follow-up__excerpt {
  margin: 0;
  max-width: 52ch;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.8;
}

.page-contact .follow-up__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .follow-up__list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text);
}

.page-contact .follow-up__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 8px;
  height: 8px;
  border: 1px solid var(--cyan);
  border-radius: 50%;
}

/* ---------- 指路带 ---------- */
.page-contact .answers {
  padding-block: var(--pc-pad);
  background:
    radial-gradient(60% 70% at 82% 8%, rgba(123, 77, 255, 0.26), transparent 70%),
    linear-gradient(120deg, rgba(26, 16, 56, 0.95), rgba(11, 7, 24, 0.9));
  border-top: 1px solid var(--line-violet);
}

.page-contact .answers__title {
  margin: 12px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 4.4vw, 2.15rem);
  font-weight: 900;
  letter-spacing: -0.015em;
  line-height: 1.3;
}

.page-contact .answers__lede {
  margin: 0;
  max-width: 58ch;
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.85;
}

.page-contact .answers__links {
  display: grid;
  gap: 14px;
  margin-top: clamp(26px, 4vw, 36px);
}

.page-contact .answers__link {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 20px 20px 22px;
  background: rgba(11, 7, 24, 0.55);
  border: 1px solid var(--line-muted);
  border-radius: 6px 20px 6px 20px;
  color: var(--text);
  text-decoration: none;
  transition: border-color 0.26s var(--ease), transform 0.26s var(--ease), box-shadow 0.26s var(--ease);
}

.page-contact .answers__link strong {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.page-contact .answers__link span {
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.75;
}

.page-contact .answers__link:hover,
.page-contact .answers__link:focus-visible {
  border-color: var(--cyan);
  transform: translateY(-3px);
  box-shadow: var(--glow-cyan);
  outline: none;
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 900px) {
  .page-contact .contact-hero__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-contact .feedback__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }

  .page-contact .feedback__figure {
    margin: 0;
    max-width: none;
  }

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

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

@media (min-width: 1160px) {
  .page-contact .contact-side__title {
    max-width: 13ch;
  }

  .page-contact .contact-hero__inner {
    gap: clamp(48px, 6vw, 88px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .topic-tab,
  .page-contact .group-card,
  .page-contact .answers__link,
  .page-contact .channel__value,
  .page-contact .copy-btn {
    transition-duration: 0.12s;
  }

  .page-contact .topic-tab:hover,
  .page-contact .group-card:hover,
  .page-contact .answers__link:hover {
    transform: none;
  }
}
<<<END>>>