.page-contact {
  --contact-panel: rgba(22, 47, 71, .62);
  --contact-line: rgba(42, 74, 99, .72);
  --contact-line-soft: rgba(42, 74, 99, .38);
  color: var(--text);
}

/* ---------- 面包屑与首屏 ---------- */
.page-contact .contact-intro {
  padding-block: clamp(24px, 4vw, 44px) clamp(44px, 6vw, 88px);
}

.page-contact .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(20px, 3vw, 36px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-contact .breadcrumb__link {
  color: var(--muted);
  text-decoration: none;
  transition: color .18s var(--ease);
}

.page-contact .breadcrumb__link:hover,
.page-contact .breadcrumb__link:focus-visible {
  color: var(--cyan);
}

.page-contact .breadcrumb__current {
  color: var(--text);
}

.page-contact .contact-intro__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
}

.page-contact .contact-intro__text h1 {
  margin: 12px 0 20px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.95rem, 5.4vw, 3.4rem);
  line-height: 1.12;
  letter-spacing: -.02em;
  max-width: 20ch;
  background: linear-gradient(96deg, var(--text) 42%, var(--violet-soft) 78%, var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-contact .contact-intro__lead {
  margin: 0 0 clamp(22px, 3vw, 30px);
  max-width: 54ch;
  font-size: clamp(1rem, 1.1vw, 1.08rem);
  line-height: 1.9;
  color: var(--muted);
}

.page-contact .contact-intro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: clamp(24px, 3.4vw, 34px);
}

.page-contact .contact-intro__marks {
  list-style: none;
  margin: 0;
  padding: 22px 0 0;
  display: grid;
  gap: 12px;
  border-top: 1px solid var(--contact-line);
}

.page-contact .contact-intro__marks li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .contact-mono {
  flex: none;
  min-width: 112px;
  font-family: var(--font-mono);
  font-size: .8125rem;
  font-weight: 500;
  letter-spacing: .02em;
  color: var(--cyan);
}

/* ---------- 首屏右侧：图 + 联系卡 ---------- */
.page-contact .contact-intro__aside {
  display: grid;
  gap: clamp(16px, 2vw, 22px);
}

.page-contact .contact-intro__figure {
  margin: 0;
}

.page-contact .contact-intro__figure .figure__frame {
  border: 1px solid var(--contact-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(140deg, rgba(124, 77, 255, .24), rgba(0, 229, 255, .12));
}

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

.page-contact .contact-intro__figure .figure__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-contact .contact-card {
  position: relative;
  padding: clamp(20px, 2.6vw, 30px);
  border: 1px solid var(--contact-line);
  border-radius: var(--radius-lg);
  background: linear-gradient(158deg, rgba(22, 47, 71, .94), rgba(11, 27, 43, .86));
  box-shadow: 0 26px 60px -34px rgba(0, 0, 0, .92), inset 0 1px 0 rgba(234, 247, 255, .07);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  overflow: hidden;
}

.page-contact .contact-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--violet) 52%, transparent);
}

.page-contact .contact-card__label {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--violet-soft);
}

.page-contact .contact-card__list {
  margin: 0;
  display: grid;
  gap: 15px;
}

.page-contact .contact-card__row {
  display: grid;
  gap: 5px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--contact-line-soft);
}

.page-contact .contact-card__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .contact-card__row dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted);
}

.page-contact .contact-card__row dd {
  margin: 0;
  font-size: .95rem;
  line-height: 1.72;
  color: var(--text);
}

.page-contact .contact-card__mail {
  font-family: var(--font-mono);
  font-size: .92rem;
  color: var(--cyan);
  text-decoration: none;
  word-break: break-all;
  border-bottom: 1px solid rgba(0, 229, 255, .45);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-contact .contact-card__mail:hover,
.page-contact .contact-card__mail:focus-visible {
  color: var(--text);
  border-bottom-color: var(--orange);
}

.page-contact .contact-card__hint {
  display: block;
  margin-top: 6px;
  font-size: .8rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 反馈流程 ---------- */
.page-contact .contact-flow {
  padding-block: clamp(44px, 6vw, 88px);
  border-top: 1px solid var(--contact-line);
}

.page-contact .contact-flow__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
}

.page-contact .contact-flow__figure {
  margin: 0;
}

.page-contact .contact-flow__figure .figure__frame {
  border: 1px solid var(--contact-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-700);
}

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

.page-contact .contact-flow__figure .figure__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-contact .contact-flow__body .section__head p {
  max-width: 52ch;
  color: var(--muted);
  line-height: 1.85;
}

.page-contact .contact-steps {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
}

.page-contact .contact-steps__item {
  position: relative;
  padding: 18px 0 18px 56px;
  border-top: 1px solid var(--contact-line-soft);
}

.page-contact .contact-steps__item:last-child {
  border-bottom: 1px solid var(--contact-line-soft);
}

.page-contact .contact-steps__item::after {
  content: "";
  position: absolute;
  left: 17px;
  top: 40px;
  bottom: -8px;
  width: 1px;
  background: linear-gradient(180deg, rgba(0, 229, 255, .5), transparent);
}

.page-contact .contact-steps__item:last-child::after {
  display: none;
}

.page-contact .contact-steps__num {
  position: absolute;
  left: 0;
  top: 18px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--orange);
}

.page-contact .contact-steps__item h3 {
  margin: 0 0 6px;
  font-size: 1.02rem;
  line-height: 1.5;
  color: var(--text);
}

.page-contact .contact-steps__item p {
  margin: 0;
  max-width: 56ch;
  font-size: .93rem;
  line-height: 1.82;
  color: var(--muted);
}

/* ---------- 反馈前准备 ---------- */
.page-contact .contact-prep {
  padding-block: clamp(44px, 6vw, 88px);
  background: linear-gradient(180deg, rgba(17, 40, 60, 0), rgba(17, 40, 60, .58), rgba(17, 40, 60, 0));
}

.page-contact .contact-prep .section__head p {
  max-width: 54ch;
  color: var(--muted);
  line-height: 1.85;
}

.page-contact .contact-prep__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: clamp(24px, 3vw, 36px);
}

.page-contact .contact-prep__card {
  position: relative;
  padding: 22px 20px 24px;
  border: 1px solid var(--contact-line);
  border-radius: var(--radius);
  background: var(--contact-panel);
  box-shadow: inset 0 1px 0 rgba(234, 247, 255, .05);
  transition: border-color .18s var(--ease), transform .18s var(--ease);
}

.page-contact .contact-prep__card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: var(--cyan);
}

.page-contact .contact-prep__card:nth-child(2)::before { background: var(--violet); }
.page-contact .contact-prep__card:nth-child(3)::before { background: var(--orange); }
.page-contact .contact-prep__card:nth-child(4)::before { background: var(--green); }

.page-contact .contact-prep__card:hover {
  border-color: rgba(0, 229, 255, .55);
  transform: translateY(-2px);
}

.page-contact .contact-prep__num {
  display: block;
  margin-bottom: 10px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--muted);
}

.page-contact .contact-prep__card h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  color: var(--text);
}

.page-contact .contact-prep__card p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.82;
  color: var(--muted);
}

/* ---------- 邮件模板 ---------- */
.page-contact .contact-templates {
  padding-block: clamp(44px, 6vw, 88px);
}

.page-contact .contact-templates .section__head p {
  max-width: 54ch;
  color: var(--muted);
  line-height: 1.85;
}

.page-contact .contact-tabs {
  position: relative;
  margin-top: clamp(24px, 3vw, 36px);
}

.page-contact .contact-tabs__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.page-contact .contact-tabs__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--contact-line);
}

.page-contact .contact-tabs__tab {
  cursor: pointer;
  padding: 8px 16px;
  border: 1px solid var(--contact-line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .04em;
  color: var(--muted);
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease), box-shadow .18s var(--ease);
}

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

.page-contact #tpl-entry:checked ~ .contact-tabs__nav [for="tpl-entry"],
.page-contact #tpl-download:checked ~ .contact-tabs__nav [for="tpl-download"],
.page-contact #tpl-rules:checked ~ .contact-tabs__nav [for="tpl-rules"],
.page-contact #tpl-partner:checked ~ .contact-tabs__nav [for="tpl-partner"] {
  background: rgba(0, 229, 255, .14);
  border-color: var(--cyan);
  color: var(--text);
  box-shadow: 0 0 0 1px rgba(0, 229, 255, .32), 0 10px 26px -18px rgba(0, 229, 255, .95);
}

.page-contact #tpl-entry:focus-visible ~ .contact-tabs__nav [for="tpl-entry"],
.page-contact #tpl-download:focus-visible ~ .contact-tabs__nav [for="tpl-download"],
.page-contact #tpl-rules:focus-visible ~ .contact-tabs__nav [for="tpl-rules"],
.page-contact #tpl-partner:focus-visible ~ .contact-tabs__nav [for="tpl-partner"] {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-contact .contact-tabs__panel {
  display: none;
  padding-top: clamp(20px, 2.6vw, 28px);
}

.page-contact #tpl-entry:checked ~ .contact-tabs__panels #panel-entry,
.page-contact #tpl-download:checked ~ .contact-tabs__panels #panel-download,
.page-contact #tpl-rules:checked ~ .contact-tabs__panels #panel-rules,
.page-contact #tpl-partner:checked ~ .contact-tabs__panels #panel-partner {
  display: block;
}

.page-contact .contact-tabs__panel h3 {
  margin: 0 0 8px;
  font-size: clamp(1.1rem, 1.8vw, 1.35rem);
  color: var(--text);
}

.page-contact .contact-tabs__hint {
  margin: 0 0 16px;
  max-width: 58ch;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .contact-tabs__sample {
  margin: 0 0 20px;
  padding: 18px 20px;
  max-width: 68ch;
  border-left: 2px solid var(--violet);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: rgba(6, 18, 31, .74);
  font-family: var(--font-mono);
  font-size: .85rem;
  line-height: 1.95;
  color: var(--text);
  white-space: pre-line;
  overflow-wrap: anywhere;
}

.page-contact .contact-tabs__send {
  display: inline-flex;
}

/* ---------- 服务时间与响应 ---------- */
.page-contact .contact-hours {
  padding-block: clamp(44px, 6vw, 88px);
}

.page-contact .contact-hours__panel {
  display: grid;
  gap: clamp(22px, 3vw, 34px);
  padding: clamp(24px, 3.4vw, 44px);
  border: 1px solid var(--contact-line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 150% at 100% 0%, rgba(124, 77, 255, .26), transparent 62%),
    linear-gradient(160deg, rgba(22, 47, 71, .9), rgba(11, 27, 43, .92));
  box-shadow: 0 30px 70px -44px rgba(0, 0, 0, .95);
}

.page-contact .contact-hours__head h2 {
  margin: 6px 0 12px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.4rem, 2.8vw, 2rem);
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-contact .contact-hours__head p {
  margin: 0;
  max-width: 46ch;
  font-size: .93rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .contact-hours__stats {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-contact .contact-hours__stat {
  display: grid;
  gap: 6px;
  padding: 14px 0;
  border-bottom: 1px solid var(--contact-line-soft);
}

.page-contact .contact-hours__stat:first-child {
  padding-top: 0;
}

.page-contact .contact-hours__stat:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .contact-hours__stat dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted);
}

.page-contact .contact-hours__stat dd {
  margin: 0;
  font-size: clamp(1.02rem, 1.6vw, 1.28rem);
  font-weight: 700;
  line-height: 1.45;
  color: var(--text);
}

.page-contact .contact-hours__note {
  grid-column: 1 / -1;
  margin: 0;
  padding-top: 18px;
  border-top: 1px dashed var(--contact-line);
  max-width: 68ch;
  font-size: .88rem;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 合作与内容纠错 ---------- */
.page-contact .contact-partner {
  padding-block: clamp(44px, 6vw, 88px);
}

.page-contact .contact-partner .section__head p {
  max-width: 54ch;
  color: var(--muted);
  line-height: 1.85;
}

.page-contact .contact-partner__list {
  display: grid;
  margin-top: clamp(24px, 3vw, 36px);
}

.page-contact .contact-partner__item {
  display: grid;
  gap: 8px;
  padding: clamp(20px, 2.4vw, 28px) 0;
  border-top: 1px solid var(--contact-line-soft);
}

.page-contact .contact-partner__item:last-child {
  border-bottom: 1px solid var(--contact-line-soft);
}

.page-contact .contact-partner__num {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--violet-soft);
}

.page-contact .contact-partner__item h3 {
  margin: 0;
  font-size: 1.05rem;
  color: var(--text);
}

.page-contact .contact-partner__item p {
  margin: 0;
  max-width: 66ch;
  font-size: .92rem;
  line-height: 1.88;
  color: var(--muted);
}

/* ---------- 备案收束条 ---------- */
.page-contact .contact-meta {
  border-top: 1px solid var(--contact-line);
  padding-block: 22px;
}

.page-contact .contact-meta__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 22px;
  font-size: .8125rem;
  color: var(--muted);
}

.page-contact .contact-meta__inner p {
  margin: 0;
}

.page-contact .contact-meta__icp {
  color: var(--text);
  letter-spacing: .06em;
}

.page-contact .contact-meta__link {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-contact .contact-meta__link:hover,
.page-contact .contact-meta__link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

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

@media (min-width: 800px) {
  .page-contact .contact-partner__item {
    grid-template-columns: 56px minmax(0, .42fr) minmax(0, 1fr);
    align-items: baseline;
    gap: 24px;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-flow__grid {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    align-items: start;
  }

  .page-contact .contact-flow__figure {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }

  .page-contact .contact-hours__panel {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-intro__grid {
    grid-template-columns: minmax(0, 1.14fr) minmax(0, .86fr);
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-contact .contact-prep__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-prep__card,
  .page-contact .contact-tabs__tab,
  .page-contact .contact-card__mail,
  .page-contact .contact-meta__link {
    transition: none;
  }

  .page-contact .contact-prep__card:hover {
    transform: none;
  }
}