.page-contact {
  --paper-raised: #FFFCF5;
  --hero-glow: rgba(232, 180, 74, 0.28);
  background: var(--c-paper);
  color: var(--c-ink);
  font-family: var(--font-body);
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  padding-top: calc(var(--header-h) + 20px);
  padding-bottom: 4px;
}
.page-contact .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 13px;
  color: var(--c-ink-soft);
}
.page-contact .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--c-gold-deep);
}
.page-contact .breadcrumb a {
  color: var(--c-ink-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-contact .breadcrumb a:hover,
.page-contact .breadcrumb a:focus-visible {
  color: var(--c-red);
  border-bottom-color: var(--c-line-gold);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding: 40px 0 72px;
  background:
    radial-gradient(120% 90% at 8% -10%, rgba(20, 80, 122, 0.95) 0%, rgba(11, 42, 69, 0.98) 52%, #071B2D 100%);
  color: var(--c-paper);
}
.page-contact .contact-hero::before,
.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  left: -10%;
  right: -10%;
  height: 340px;
  pointer-events: none;
  border-radius: 50%;
  background: radial-gradient(closest-side, var(--hero-glow), transparent 72%);
  opacity: 0.55;
}
.page-contact .contact-hero::before {
  top: -150px;
  animation: contact-drift 34s ease-in-out infinite;
}
.page-contact .contact-hero::after {
  bottom: -220px;
  background: radial-gradient(closest-side, rgba(255, 122, 69, 0.22), transparent 74%);
  animation: contact-drift 42s ease-in-out infinite reverse;
}
@keyframes contact-drift {
  0%, 100% { transform: translate3d(-2%, 0, 0); }
  50% { transform: translate3d(3%, 12px, 0); }
}
.page-contact .contact-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}
.page-contact .contact-hero-copy .plate {
  color: var(--c-gold);
}
.page-contact .contact-hero-copy h1 {
  margin: 14px 0 18px;
  color: var(--c-paper);
}
.page-contact .contact-hero-lede {
  max-width: 40em;
  color: rgba(251, 246, 236, 0.86);
}
.page-contact .hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}
.page-contact .hero-chips li {
  font-size: 13px;
  letter-spacing: 0.04em;
  padding: 7px 14px;
  border: 1px solid var(--c-line-gold);
  border-radius: 999px;
  color: rgba(251, 246, 236, 0.9);
  background: rgba(251, 246, 236, 0.06);
}
.page-contact .contact-hero-media {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--c-line-gold);
  box-shadow: var(--shadow-2);
}
.page-contact .contact-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 章节通用 ---------- */
.page-contact .section {
  padding: 68px 0;
}
.page-contact .contact-head {
  max-width: 46em;
  margin-bottom: 44px;
}
.page-contact .contact-head h2 {
  margin: 12px 0 16px;
}

/* ---------- 三块联系展签 ---------- */
.page-contact .channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
.page-contact .channel {
  position: relative;
  background: var(--paper-raised);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
  padding: 28px 22px 30px;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.page-contact .channel:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
}
.page-contact .channel:focus-within {
  box-shadow: var(--shadow-2);
  outline: 2px solid var(--c-gold);
  outline-offset: 3px;
}
.page-contact .channel-note {
  display: none;
}
.page-contact .channel-title {
  margin: 10px 0 18px;
  font-family: var(--font-display);
  font-size: 1.35rem;
  line-height: 1.35;
  letter-spacing: 0.03em;
  color: var(--c-ink);
}
.page-contact .channel-big {
  display: block;
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1.28;
  letter-spacing: 0.01em;
  word-break: break-word;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--c-line-gold);
  background: linear-gradient(96deg, var(--c-red) 0%, var(--c-gold-deep) 58%, var(--c-red) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}
.page-contact .channel-big--tel {
  letter-spacing: 0.08em;
}
.page-contact .channel-body {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-ink-soft);
}
.page-contact .channel-body:last-child {
  margin-bottom: 0;
}

.page-contact .channel--address {
  background:
    radial-gradient(120% 110% at 0% 0%, rgba(20, 80, 122, 0.12), transparent 62%),
    radial-gradient(90% 90% at 100% 100%, rgba(232, 180, 74, 0.16), transparent 66%),
    var(--paper-raised);
}
.page-contact .channel-addr {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-size: 1.2rem;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--c-mid);
}
.page-contact .addr-list {
  display: grid;
  gap: 1px;
  margin: 0 0 20px;
  border-top: 1px solid var(--c-line);
}
.page-contact .addr-list > div {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  padding: 11px 0;
  border-bottom: 1px solid var(--c-line-soft);
}
.page-contact .addr-list dt {
  flex: 0 0 6em;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--c-gold-deep);
}
.page-contact .addr-list dd {
  margin: 0;
  font-size: 14px;
  word-break: break-word;
  color: var(--c-ink);
}

/* ---------- 合作与反馈 ---------- */
.page-contact .contact-coop {
  padding-top: 24px;
}
.page-contact .contact-coop-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}
.page-contact .coop-head h2 {
  margin: 12px 0 16px;
}
.page-contact .coop-links a {
  color: var(--c-mid);
  text-decoration: none;
  border-bottom: 1px solid var(--c-line);
}
.page-contact .coop-links a:hover,
.page-contact .coop-links a:focus-visible {
  color: var(--c-red);
  border-bottom-color: var(--c-red);
}
.page-contact .coop-stack {
  display: grid;
  gap: 12px;
}
.page-contact .coop-spec {
  background: var(--c-mist);
  border: 1px solid var(--c-line-soft);
  border-left: 3px solid var(--c-gold);
  border-radius: var(--radius);
  box-shadow: none;
}
.page-contact .coop-spec summary {
  padding: 18px 20px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.04em;
  color: var(--c-deep);
  cursor: pointer;
  list-style: none;
}
.page-contact .coop-spec summary::-webkit-details-marker {
  display: none;
}
.page-contact .coop-spec summary::after {
  content: "＋";
  float: right;
  color: var(--c-gold-deep);
  font-size: 1rem;
}
.page-contact .coop-spec[open] summary::after {
  content: "－";
}
.page-contact .coop-spec summary:focus-visible {
  outline: 2px solid var(--c-gold);
  outline-offset: -2px;
}
.page-contact .coop-spec .spec-body {
  padding: 0 20px 20px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-ink-soft);
}
.page-contact .coop-spec .spec-body p {
  margin: 0;
}

/* ---------- 响应时效刻度 ---------- */
.page-contact .contact-timing {
  background:
    linear-gradient(180deg, rgba(231, 238, 245, 0) 0%, rgba(231, 238, 245, 0.72) 18%, rgba(231, 238, 245, 0.72) 82%, rgba(231, 238, 245, 0) 100%);
}
.page-contact .timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 0 0 0 26px;
  list-style: none;
}
.page-contact .timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background: var(--c-line);
}
.page-contact .tl-item {
  position: relative;
  padding: 12px 0 16px;
}
.page-contact .tl-item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 16px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: radial-gradient(circle at 32% 28%, var(--c-gold) 0%, var(--c-red) 78%);
  box-shadow: 0 0 0 4px rgba(232, 180, 74, 0.16);
}
.page-contact .tl-item:focus-visible {
  outline: 2px solid var(--c-gold);
  outline-offset: 4px;
}
.page-contact .tl-label {
  margin: 0 0 4px;
  font-size: 14px;
  letter-spacing: 0.03em;
  color: var(--c-ink);
}
.page-contact .tl-time {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: 0.03em;
  color: var(--c-red);
}
.page-contact .tl-tip {
  display: none;
}

.page-contact .timing-figure {
  margin: 46px 0 0;
  display: grid;
  gap: 16px;
}
.page-contact .timing-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 520px;
  margin: 0 auto;
  border-radius: var(--radius);
  border: 1px solid var(--c-line-soft);
  object-fit: cover;
}
.page-contact .timing-figure figcaption {
  max-width: 46em;
  margin: 0 auto;
  font-size: 14px;
  line-height: 1.8;
  text-align: center;
}

/* ---------- 返回上手问答细条 ---------- */
.page-contact .contact-return {
  padding: 0 0 72px;
}
.page-contact .return-bar {
  position: sticky;
  bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  border: 1px solid var(--c-line-gold);
  border-radius: var(--radius);
  background: linear-gradient(100deg, rgba(11, 42, 69, 0.96), rgba(20, 80, 122, 0.94));
  color: var(--c-paper);
  text-decoration: none;
  font-size: 15px;
  letter-spacing: 0.03em;
  box-shadow: var(--shadow-2);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-contact .return-bar:hover,
.page-contact .return-bar:focus-visible {
  transform: translateY(-3px);
  border-color: var(--c-gold);
}
.page-contact .return-bar:focus-visible {
  outline: 2px solid var(--c-gold);
  outline-offset: 3px;
}
.page-contact .return-arrow {
  color: var(--c-gold);
  font-size: 1.1rem;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 720px) {
  .page-contact .contact-hero {
    padding: 56px 0 96px;
  }
  .page-contact .contact-hero-inner {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    gap: 56px;
  }
  .page-contact .channel {
    padding: 34px 30px 36px;
  }
  .page-contact .channel-title {
    font-size: 1.5rem;
  }
  .page-contact .channel-big {
    font-size: 2.125rem;
  }
  .page-contact .addr-list > div {
    flex-wrap: nowrap;
  }
  .page-contact .contact-coop-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }
}

/* ---------- 桌面错落展签与横向刻度 ---------- */
@media (min-width: 960px) {
  .page-contact .section {
    padding: 86px 0;
  }
  .page-contact .channels {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: 40px;
    row-gap: 40px;
  }
  .page-contact .channel:nth-child(1) {
    grid-column: 1 / span 7;
  }
  .page-contact .channel:nth-child(2) {
    grid-column: 5 / span 7;
  }
  .page-contact .channel:nth-child(3) {
    grid-column: 2 / span 8;
  }
  .page-contact .channel-note {
    display: block;
    position: absolute;
    top: 30px;
    right: -22px;
    writing-mode: vertical-rl;
    text-orientation: upright;
    font-size: 12px;
    letter-spacing: 0.2em;
    color: var(--c-gold-deep);
  }
  .page-contact .timeline {
    flex-direction: row;
    padding: 52px 0 0;
  }
  .page-contact .timeline::before {
    left: 0;
    right: 0;
    top: 6px;
    bottom: auto;
    width: auto;
    height: 1px;
  }
  .page-contact .tl-item {
    flex: 1 1 0;
    min-width: 0;
    padding: 0 24px 0 0;
  }
  .page-contact .tl-item::before {
    left: 0;
    top: -46px;
  }
  .page-contact .tl-time {
    font-size: 1.6rem;
  }
  .page-contact .tl-tip {
    display: block;
    position: absolute;
    left: 0;
    bottom: calc(100% + 14px);
    width: max-content;
    max-width: 230px;
    padding: 10px 12px;
    border-radius: var(--radius);
    background: var(--c-deep);
    color: var(--c-paper);
    font-size: 12px;
    line-height: 1.65;
    opacity: 0;
    visibility: hidden;
    transform: translateY(6px);
    transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur) var(--ease);
    z-index: 4;
    pointer-events: none;
  }
  .page-contact .tl-item:hover .tl-tip,
  .page-contact .tl-item:focus .tl-tip,
  .page-contact .tl-item:focus-visible .tl-tip,
  .page-contact .tl-item:focus-within .tl-tip {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-hero::before,
  .page-contact .contact-hero::after {
    animation: none;
  }
  .page-contact .channel,
  .page-contact .return-bar,
  .page-contact .tl-tip {
    transition: none;
  }
}
</style>