.page-contact {
  --pc-pad: clamp(20px, 3.2vw, 34px);
  --pc-line: rgba(30, 42, 66, .9);
  --pc-gap: clamp(18px, 3vw, 28px);
  --pc-ink: #0B1220;
  --pc-ink-soft: rgba(11, 18, 32, .58);
  --pc-ink-mid: rgba(11, 18, 32, .82);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: var(--ink-900);
  padding-top: calc(var(--header-h) + clamp(30px, 6vw, 72px));
  padding-bottom: clamp(46px, 8vw, 96px);
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .contact-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.page-contact .contact-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 32%;
  opacity: .34;
}

.page-contact .contact-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(5, 7, 14, .55) 0%, rgba(5, 7, 14, .92) 60%, var(--ink-900) 100%);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(30, 42, 66, .55) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 42, 66, .55) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 76%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 76%);
}

.page-contact .contact-hero__inner {
  position: relative;
  z-index: 1;
}

.page-contact .contact-crumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 clamp(20px, 3vw, 34px);
  font-size: 12px;
  letter-spacing: .09em;
  color: var(--muted);
}

.page-contact .contact-crumbs a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .contact-crumbs a:hover {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

.page-contact .contact-crumbs span[aria-hidden] {
  color: rgba(138, 152, 180, .45);
}

.page-contact .contact-hero .eyebrow {
  margin: 0 0 14px;
}

.page-contact h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(34px, 6.4vw, 66px);
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--text);
  max-width: 18ch;
}

.page-contact .contact-hero .lead {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(26px, 3.6vw, 38px);
}

/* ---------- 通用分区 ---------- */
.page-contact .section {
  position: relative;
  padding: clamp(48px, 8vw, 92px) 0;
}

.page-contact .section + .section {
  border-top: 1px solid var(--pc-line);
}

.page-contact .section-head {
  max-width: 64ch;
  margin-bottom: clamp(26px, 4vw, 42px);
}

.page-contact .section-head h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 3.6vw, 40px);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-contact .section-head .lead {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 三栏分流 ---------- */
.page-contact .route-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-contact .route-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--pc-line);
  border-radius: var(--radius-l);
  background: linear-gradient(180deg, rgba(16, 27, 46, .8), rgba(11, 18, 32, .92));
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: border-color .25s var(--ease), transform .25s var(--ease);
}

.page-contact .route-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .32s var(--ease);
}

.page-contact .route-card:hover {
  border-color: rgba(185, 242, 74, .32);
  transform: translateY(-2px);
}

.page-contact .route-card:hover::before,
.page-contact .route-card[open]::before {
  transform: scaleX(1);
}

.page-contact .route-card:nth-child(1)::before { background: var(--orange); }
.page-contact .route-card:nth-child(2)::before { background: var(--aqua); }
.page-contact .route-card:nth-child(3)::before { background: var(--violet); }

.page-contact .route-card:nth-child(1) .route-card__icon { color: var(--orange); }
.page-contact .route-card:nth-child(2) .route-card__icon { color: var(--aqua); }
.page-contact .route-card:nth-child(3) .route-card__icon { color: var(--violet); }

.page-contact .route-card__head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: var(--pc-pad);
  cursor: pointer;
  list-style: none;
}

.page-contact .route-card__head::-webkit-details-marker { display: none; }
.page-contact .route-card__head::marker { content: ""; }

.page-contact .route-card__head:focus-visible {
  outline: 2px solid var(--aqua);
  outline-offset: -3px;
  border-radius: var(--radius-l);
}

.page-contact .route-card__icon {
  flex: none;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-m);
  border: 1px solid var(--pc-line);
  background: rgba(5, 7, 14, .55);
}

.page-contact .route-card__label {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.page-contact .route-card__name {
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: .01em;
}

.page-contact .route-card__meta {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-contact .route-card__toggle {
  position: relative;
  flex: none;
  margin-left: auto;
  width: 22px;
  height: 22px;
  border: 1px solid var(--line);
  border-radius: 50%;
}

.page-contact .route-card__toggle::before,
.page-contact .route-card__toggle::after {
  content: "";
  position: absolute;
  background: var(--muted);
  border-radius: 2px;
}

.page-contact .route-card__toggle::before {
  left: 50%;
  top: 6px;
  bottom: 6px;
  width: 1.5px;
  transform: translateX(-50%);
}

.page-contact .route-card__toggle::after {
  top: 50%;
  left: 6px;
  right: 6px;
  height: 1.5px;
  transform: translateY(-50%);
}

.page-contact .route-card[open] .route-card__toggle::before { opacity: 0; }
.page-contact .route-card[open] .route-card__toggle { border-color: rgba(185, 242, 74, .5); }

.page-contact .route-card__body {
  padding: 0 var(--pc-pad) var(--pc-pad);
  animation: pc-rise .28s var(--ease);
}

.page-contact .route-card__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--muted);
}

.page-contact .route-card__hint {
  margin-top: 14px !important;
  padding-top: 14px;
  border-top: 1px dashed var(--pc-line);
  font-size: 12.5px !important;
  color: rgba(53, 224, 198, .85) !important;
  letter-spacing: .02em;
  word-break: break-all;
}

@keyframes pc-rise {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 邮箱与电话 ---------- */
.page-contact .contact-channel__grid {
  column-gap: clamp(16px, 2.4vw, 26px);
  row-gap: clamp(16px, 2.4vw, 26px);
}

.page-contact .channel-card {
  grid-column: span 12;
  padding: clamp(22px, 3.6vw, 38px);
  border-radius: var(--radius-l);
  background: var(--paper);
  color: var(--ink-800);
  box-shadow: 0 26px 64px -40px rgba(0, 0, 0, .95);
}

.page-contact .channel-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--pc-ink-soft);
}

.page-contact .channel-value {
  margin: 16px 0 0;
  font-family: var(--font-data);
  font-size: clamp(19px, 4.2vw, 29px);
  font-weight: 600;
  letter-spacing: -.01em;
  line-height: 1.3;
  color: var(--pc-ink);
  word-break: break-all;
}

.page-contact .channel-note {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--pc-ink-mid);
}

.page-contact .channel-facts {
  margin: 22px 0 0;
  padding-top: 18px;
  border-top: 1px solid rgba(11, 18, 32, .14);
  display: grid;
  gap: 12px;
}

.page-contact .channel-fact {
  display: grid;
  gap: 3px;
}

.page-contact .channel-fact dt {
  font-size: 11px;
  letter-spacing: .16em;
  color: rgba(11, 18, 32, .46);
}

.page-contact .channel-fact dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--pc-ink-mid);
}

/* ---------- 纠错清单 ---------- */
.page-contact .contact-fix__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
}

.page-contact .contact-fix__intro h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(25px, 3.4vw, 38px);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-contact .contact-fix__intro p {
  margin: 16px 0 0;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--muted);
  max-width: 46ch;
}

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

.page-contact .fix-item {
  border: 1px solid var(--pc-line);
  border-radius: var(--radius-m);
  background: rgba(16, 27, 46, .55);
  transition: border-color .22s var(--ease), background .22s var(--ease);
}

.page-contact .fix-item:has(input:checked) {
  border-color: rgba(185, 242, 74, .5);
  background: rgba(185, 242, 74, .07);
}

.page-contact .fix-item label {
  display: flex;
  align-items: flex-start;
  gap: 13px;
  padding: 14px 16px;
  cursor: pointer;
}

.page-contact .fix-item input {
  appearance: none;
  -webkit-appearance: none;
  position: relative;
  flex: none;
  width: 20px;
  height: 20px;
  margin: 2px 0 0;
  border: 1.5px solid var(--line);
  border-radius: 5px;
  background: rgba(5, 7, 14, .6);
  cursor: pointer;
  transition: background .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .fix-item input:checked {
  background: var(--signal);
  border-color: var(--signal);
}

.page-contact .fix-item input:checked::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border: solid var(--on-signal);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.page-contact .fix-item input:focus-visible {
  outline: 2px solid var(--aqua);
  outline-offset: 2px;
}

.page-contact .fix-item__body {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.page-contact .fix-item__title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

.page-contact .fix-item__desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 合作与建议 ---------- */
.page-contact .contact-coop__panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 40px);
  padding: clamp(24px, 4vw, 46px);
  border: 1px solid var(--pc-line);
  border-radius: var(--radius-l);
  background:
    linear-gradient(135deg, rgba(255, 122, 47, .12) 0%, rgba(16, 27, 46, .82) 42%, rgba(108, 124, 255, .14) 100%);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.page-contact .contact-coop__text h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.2vw, 36px);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-contact .contact-coop__text p {
  margin: 16px 0 0;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--muted);
  max-width: 54ch;
}

.page-contact .contact-coop__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  align-content: center;
}

.page-contact .contact-coop__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 0;
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .contact-coop__list li:last-child { border-bottom: 0; }

.page-contact .contact-coop__key {
  font-size: 14px;
  color: var(--muted);
  letter-spacing: .02em;
}

/* ---------- 地址 ---------- */
.page-contact .contact-address__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 42px);
  align-items: center;
}

.page-contact .address-card {
  padding: clamp(22px, 3.4vw, 36px);
  border-left: 3px solid var(--signal);
  border-radius: 0 var(--radius-l) var(--radius-l) 0;
  background: rgba(16, 27, 46, .5);
}

.page-contact .address-line {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.6vw, 26px);
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: .01em;
  color: var(--text);
}

.page-contact .address-card .note {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .contact-address__figure {
  margin: 0;
  border: 1px solid var(--pc-line);
  border-radius: var(--radius-l);
  overflow: hidden;
}

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

/* ---------- 断点 ---------- */
@media (min-width: 780px) {
  .page-contact .route-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (min-width: 880px) {
  .page-contact .channel-card--mail { grid-column: span 7; }
  .page-contact .channel-card--phone { grid-column: span 5; }

  .page-contact .contact-coop__panel {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, .85fr);
    align-items: center;
  }
}

@media (min-width: 920px) {
  .page-contact .contact-fix__grid {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
    align-items: start;
  }

  .page-contact .contact-address__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .82fr);
  }
}

.page-contact .route-card,
.page-contact .channel-card,
.page-contact .contact-coop__panel,
.page-contact .address-card,
.page-contact .fix-item {
  max-width: 100%;
}

.page-contact img { max-width: 100%; height: auto; }

@media (prefers-reduced-motion: reduce) {
  .page-contact .route-card,
  .page-contact .route-card::before,
  .page-contact .route-card__body,
  .page-contact .fix-item,
  .page-contact .fix-item input,
  .page-contact .contact-crumbs a {
    transition: none;
    animation: none;
  }
}