.page-contact {
  display: block;
  overflow-x: clip;
  color: var(--c-snow);
  font-family: var(--f-body);
  line-height: 1.7;
  background: linear-gradient(180deg, var(--c-night) 0%, var(--c-void) 100%);
}

.page-contact .section {
  padding-block: clamp(2.4rem, 6.5vw, 4.6rem);
}

.page-contact h2 {
  margin: 0.35rem 0 0;
  font-family: var(--f-display);
  font-size: clamp(1.55rem, 4.6vw, 2.6rem);
  line-height: 1.12;
  letter-spacing: -0.015em;
}

.page-contact h3 {
  margin: 0 0 0.5rem;
  font-family: var(--f-display);
  font-size: clamp(1rem, 2.4vw, 1.25rem);
  line-height: 1.32;
  letter-spacing: -0.005em;
}

.page-contact p {
  margin: 0.7rem 0 0;
}

.page-contact .section-head {
  max-width: 60ch;
  margin-bottom: clamp(1.2rem, 3vw, 1.9rem);
}

.page-contact .section-head .lede {
  color: rgba(244, 247, 251, 0.76);
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  padding: clamp(1.4rem, 4.5vw, 2.6rem) 0 clamp(2.2rem, 6vw, 4rem);
  background:
    radial-gradient(130% 100% at 88% -8%, rgba(34, 227, 210, 0.16), transparent 58%),
    radial-gradient(90% 80% at 0% 112%, rgba(255, 106, 26, 0.13), transparent 62%),
    linear-gradient(180deg, var(--c-indigo) 0%, var(--c-night) 100%);
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  right: -14%;
  top: -20%;
  width: 48%;
  height: 130%;
  background: linear-gradient(105deg, transparent 46%, rgba(34, 227, 210, 0.09) 46% 52%, transparent 52%);
  transform: skewX(-6deg);
  pointer-events: none;
}

.page-contact .contact-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(1.3rem, 4vw, 2.1rem);
}

.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--f-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: rgba(244, 247, 251, 0.55);
}

.page-contact .breadcrumb a {
  color: var(--c-sand);
  text-decoration: none;
}

.page-contact .breadcrumb a:hover,
.page-contact .breadcrumb a:focus-visible {
  color: var(--c-orange);
}

.page-contact .contact-hero__copy h1 {
  max-width: 17ch;
  margin: 0.55rem 0 0;
  font-family: var(--f-display);
  font-size: clamp(1.95rem, 8.2vw, 3.85rem);
  font-weight: 800;
  line-height: 1.03;
  letter-spacing: -0.028em;
}

.page-contact .contact-hero__copy .lede {
  max-width: 46ch;
  margin-top: clamp(0.85rem, 2.5vw, 1.25rem);
  color: rgba(244, 247, 251, 0.82);
}

.page-contact .hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: clamp(1rem, 3vw, 1.5rem) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .hero-chips .tag {
  display: inline-block;
  border-color: var(--c-line);
  color: var(--c-sand);
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-contact .hero-chips .tag:hover,
.page-contact .hero-chips .tag:focus-visible {
  color: var(--c-snow);
  border-color: var(--c-orange);
  background: rgba(255, 106, 26, 0.12);
}

.page-contact .contact-hero__media {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--c-glass-2);
  box-shadow: 0 26px 64px rgba(5, 7, 15, 0.6);
}

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

/* ---------- 问题分类选择器 ---------- */

.page-contact .router {
  position: relative;
  margin-top: clamp(1rem, 3vw, 1.6rem);
}

.page-contact .router__input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  opacity: 0;
  pointer-events: none;
}

.page-contact .router__tabs {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.4rem;
  scrollbar-width: thin;
}

.page-contact .router__tab {
  flex: 0 0 auto;
  padding: 0.6rem 1rem;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  background: var(--c-glass);
  color: var(--c-sand);
  font-family: var(--f-mono);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-contact .router__tab:hover {
  border-color: var(--c-glass-2);
  color: var(--c-snow);
}

.page-contact #issue-panel:checked ~ .router__tabs [for="issue-panel"],
.page-contact #issue-channel:checked ~ .router__tabs [for="issue-channel"],
.page-contact #issue-download:checked ~ .router__tabs [for="issue-download"],
.page-contact #issue-account:checked ~ .router__tabs [for="issue-account"],
.page-contact #issue-partner:checked ~ .router__tabs [for="issue-partner"] {
  color: var(--c-snow);
  border-color: var(--c-orange);
  background: rgba(255, 106, 26, 0.16);
}

.page-contact .router__panel {
  display: none;
}

.page-contact #issue-panel:checked ~ .router__panels [data-issue="issue-panel"],
.page-contact #issue-channel:checked ~ .router__panels [data-issue="issue-channel"],
.page-contact #issue-download:checked ~ .router__panels [data-issue="issue-download"],
.page-contact #issue-account:checked ~ .router__panels [data-issue="issue-account"],
.page-contact #issue-partner:checked ~ .router__panels [data-issue="issue-partner"] {
  display: block;
  animation: contactFade 0.34s var(--ease) both;
}

.page-contact .router__panel {
  position: relative;
  margin-top: 1.2rem;
  padding: clamp(1.15rem, 3.2vw, 1.8rem);
  border-radius: var(--r-md);
  border: 1px solid var(--c-glass-2);
  border-left: 3px solid var(--c-orange);
  background: var(--c-indigo);
}

.page-contact .router__panel p {
  color: rgba(244, 247, 251, 0.82);
  max-width: 62ch;
}

.page-contact .router__facts {
  display: grid;
  gap: 0.75rem;
  margin: 1.15rem 0 0;
}

.page-contact .router__facts > div {
  padding-top: 0.6rem;
  border-top: 1px solid var(--c-line);
}

.page-contact .router__facts dt {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--c-cyan);
}

.page-contact .router__facts dd {
  margin: 0.28rem 0 0;
  font-size: 0.95rem;
  color: rgba(244, 247, 251, 0.86);
}

.page-contact .router__facts a {
  color: var(--c-sand);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .router__facts a:hover,
.page-contact .router__facts a:focus-visible {
  color: var(--c-orange);
}

@keyframes contactFade {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 站内反馈 ---------- */

.page-contact .contact-feedback {
  border-top: 1px solid var(--c-line);
}

.page-contact .feedback {
  display: grid;
  gap: clamp(1.3rem, 4vw, 2.4rem);
}

.page-contact .feedback__lead p {
  color: rgba(244, 247, 251, 0.78);
  max-width: 48ch;
}

.page-contact .feedback__link {
  display: inline-block;
  margin-top: 0.4rem;
  font-family: var(--f-mono);
  font-size: 0.86rem;
  letter-spacing: 0.03em;
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 227, 210, 0.4);
  padding-bottom: 2px;
}

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

.page-contact .feedback__steps {
  display: grid;
  gap: 0.85rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .feedback__steps li {
  position: relative;
  padding: 1rem 1.1rem 1rem 3.5rem;
  border-radius: var(--r-md);
  border: 1px solid rgba(255, 255, 255, 0.07);
  background: var(--c-glass);
}

.page-contact .feedback__steps .num {
  position: absolute;
  left: 1.15rem;
  top: 1rem;
  font-family: var(--f-mono);
  font-size: 1.05rem;
  color: var(--c-orange);
}

.page-contact .feedback__steps p {
  margin-top: 0.3rem;
  font-size: 0.94rem;
  color: rgba(244, 247, 251, 0.74);
}

/* ---------- 邮箱与电话 ---------- */

.page-contact .lines {
  display: grid;
  border-top: 1px solid var(--c-line);
}

.page-contact .lines__row {
  display: grid;
  gap: 0.45rem;
  padding: clamp(1.1rem, 3vw, 1.7rem) 0;
  border-bottom: 1px solid var(--c-line);
}

.page-contact .lines__label {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  color: var(--c-sand);
}

.page-contact .lines__value {
  margin: 0;
  font-family: var(--f-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.05rem, 4.4vw, 1.9rem);
  line-height: 1.25;
  letter-spacing: 0.005em;
  color: var(--c-snow);
  overflow-wrap: anywhere;
}

.page-contact .lines__note {
  margin: 0;
  font-size: 0.92rem;
  color: rgba(244, 247, 251, 0.68);
}

/* ---------- 服务时间 ---------- */

.page-contact .hours {
  display: grid;
  gap: clamp(1.3rem, 4vw, 2.4rem);
  align-items: center;
}

.page-contact .hours__copy p {
  color: rgba(244, 247, 251, 0.78);
  max-width: 50ch;
}

.page-contact .hours__bar {
  position: relative;
  height: 46px;
  margin-top: 1.3rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--c-glass-2);
  background:
    linear-gradient(90deg,
      rgba(244, 247, 251, 0.05) 0 41.66%,
      rgba(255, 106, 26, 0.72) 41.66% 79.16%,
      rgba(244, 247, 251, 0.05) 79.16% 100%);
  overflow: hidden;
}

.page-contact .hours__bar::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, rgba(11, 20, 48, 0.5) 0 1px, transparent 1px 8.3333%);
  pointer-events: none;
}

.page-contact .hours__mark {
  position: absolute;
  top: -4px;
  bottom: -4px;
  left: 41.66%;
  width: 2px;
  background: var(--c-cyan);
  box-shadow: 0 0 12px rgba(34, 227, 210, 0.7);
}

.page-contact .hours__scale {
  display: flex;
  justify-content: space-between;
  margin: 0.5rem 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: rgba(244, 247, 251, 0.42);
}

.page-contact .hours__note {
  margin-top: 1.1rem;
  font-size: 0.92rem;
  color: rgba(244, 247, 251, 0.66);
}

.page-contact .hours__media {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--c-glass);
}

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

/* ---------- 办公地址 ---------- */

.page-contact .address {
  display: grid;
  gap: clamp(1.2rem, 3.5vw, 2rem);
  align-items: center;
}

.page-contact .address__card {
  padding: clamp(1.2rem, 3.5vw, 2rem);
  border-radius: var(--r-md);
  border: 1px solid var(--c-glass-2);
  border-left: 3px solid var(--c-poplar);
  background: linear-gradient(150deg, rgba(22, 32, 74, 0.96), rgba(11, 20, 48, 0.96));
}

.page-contact .address__value {
  margin: 0.85rem 0 0;
  font-family: var(--f-mono);
  font-size: clamp(1rem, 3.4vw, 1.32rem);
  line-height: 1.55;
  color: var(--c-snow);
  overflow-wrap: anywhere;
}

.page-contact .address__card p:last-child {
  color: rgba(244, 247, 251, 0.74);
  font-size: 0.95rem;
}

.page-contact .address__graphic {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--c-glass);
  background: linear-gradient(160deg, rgba(217, 164, 65, 0.07), rgba(11, 20, 48, 0.5));
}

.page-contact .address__graphic svg {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- 合作与投稿 ---------- */

.page-contact .contact-partner {
  border-top: 1px solid var(--c-line);
}

.page-contact .partner-grid {
  display: grid;
  gap: 1rem;
}

.page-contact .partner-card {
  position: relative;
  padding: clamp(1.1rem, 3vw, 1.6rem) clamp(1.1rem, 3vw, 1.6rem) clamp(1.1rem, 3vw, 1.6rem) calc(clamp(1.1rem, 3vw, 1.6rem) + 0.5rem);
  border-radius: var(--r-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: var(--c-glass);
  overflow: hidden;
}

.page-contact .partner-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--c-orange), var(--c-cyan));
}

.page-contact .partner-card p {
  color: rgba(244, 247, 251, 0.78);
  font-size: 0.95rem;
}

.page-contact .partner-card__meta {
  margin-top: 0.95rem;
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--c-cyan);
}

.page-contact .partner-note {
  margin-top: 1.4rem;
  padding: 0.9rem 1.1rem;
  border-radius: var(--r-sm);
  border: 1px dashed var(--c-line);
  color: rgba(244, 247, 251, 0.8);
  font-size: 0.94rem;
}

/* ---------- 收束链接 ---------- */

.page-contact .contact-next {
  padding: clamp(2.2rem, 6vw, 3.6rem) 0 clamp(2.6rem, 7vw, 4.4rem);
  border-top: 1px solid var(--c-line);
  background: linear-gradient(180deg, transparent, rgba(34, 227, 210, 0.05));
}

.page-contact .next-links {
  display: grid;
  gap: 0.65rem;
  margin: 1.3rem 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .next-links a {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.85rem 1rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--c-glass-2);
  background: var(--c-glass);
  color: var(--c-snow);
  font-size: 0.94rem;
  text-decoration: none;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-contact .next-links a::before {
  content: "→";
  flex: 0 0 auto;
  font-family: var(--f-mono);
  color: var(--c-orange);
}

.page-contact .next-links a:hover,
.page-contact .next-links a:focus-visible {
  border-color: var(--c-orange);
  background: rgba(255, 106, 26, 0.08);
  transform: translateX(3px);
}

.page-contact a:focus-visible,
.page-contact label:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-contact .router__facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem 1.6rem;
  }
}

@media (min-width: 760px) {
  .page-contact .partner-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.4rem;
  }

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

@media (min-width: 860px) {
  .page-contact .lines__row {
    grid-template-columns: 9rem minmax(0, 1fr) 17rem;
    align-items: baseline;
    gap: 1.6rem;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    grid-template-areas:
      "crumbs crumbs"
      "copy   media";
    align-items: center;
    column-gap: clamp(1.8rem, 4vw, 3.4rem);
    row-gap: clamp(1.4rem, 3vw, 2.2rem);
  }

  .page-contact .contact-hero__inner > .breadcrumb {
    grid-area: crumbs;
  }

  .page-contact .contact-hero__copy {
    grid-area: copy;
  }

  .page-contact .contact-hero__media {
    grid-area: media;
  }

  .page-contact .feedback {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-contact .hours {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    column-gap: clamp(1.8rem, 4vw, 3rem);
  }

  .page-contact .address {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    column-gap: clamp(1.6rem, 3.5vw, 2.6rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact #issue-panel:checked ~ .router__panels [data-issue="issue-panel"],
  .page-contact #issue-channel:checked ~ .router__panels [data-issue="issue-channel"],
  .page-contact #issue-download:checked ~ .router__panels [data-issue="issue-download"],
  .page-contact #issue-account:checked ~ .router__panels [data-issue="issue-account"],
  .page-contact #issue-partner:checked ~ .router__panels [data-issue="issue-partner"] {
    animation: none;
  }

  .page-contact .next-links a:hover,
  .page-contact .next-links a:focus-visible {
    transform: none;
  }
}