.page-contact {
  --contact-gap: 18px;
  --contact-pad: clamp(16px, 2vw, 22px);
  padding-bottom: clamp(48px, 7vw, 88px);
}

.page-contact .wrap {
  padding-top: clamp(18px, 2.6vw, 34px);
}

/* ---------- 面包屑 ---------- */
.page-contact .crumb {
  margin-bottom: clamp(18px, 2.6vw, 30px);
  font-size: 13px;
}

.page-contact .crumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 4px;
  list-style: none;
  margin: 0;
  padding: 0;
  color: var(--cold);
}

.page-contact .crumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--line);
}

.page-contact .crumb a {
  color: var(--cold);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--tfast) ease, border-color var(--tfast) ease;
}

.page-contact .crumb a:hover {
  color: var(--gold-hi);
  border-bottom-color: var(--gold);
}

.page-contact .crumb li[aria-current="page"] {
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-contact .contact-hero .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0;
}

.page-contact .contact-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(26px, 5.2vw, 46px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--paper);
  margin: 0;
  max-width: 20em;
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.55);
}

.page-contact .contact-hero__lede {
  margin: 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--paper);
  opacity: 0.9;
}

.page-contact .contact-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  list-style: none;
  margin: 4px 0 0;
  padding: 12px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  color: var(--cold);
}

.page-contact .contact-hero__facts .mono {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--gold-hi);
  margin-right: 6px;
}

.page-contact .contact-hero__art {
  margin: clamp(10px, 2vw, 18px) 0 0;
}

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

/* ---------- 区块标题 ---------- */
.page-contact .sec-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 10px;
}

.page-contact .sec-head__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--gold);
  padding: 3px 8px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  flex: none;
}

.page-contact .sec-head h2 {
  font-family: var(--font-head);
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 0;
  line-height: 1.3;
}

/* ---------- 渠道 ---------- */
.page-contact .channels {
  margin-top: clamp(40px, 6vw, 72px);
}

.page-contact .channels__intro {
  margin: 0 0 clamp(16px, 2.4vw, 24px);
  max-width: 36em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--cold);
}

.page-contact .channels__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--contact-gap);
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: var(--contact-pad);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--cold);
  opacity: 0.5;
}

.page-contact .channel-card--gold::before { background: var(--gold); opacity: 1; }
.page-contact .channel-card--jade::before { background: var(--jade); opacity: 1; }
.page-contact .channel-card--ruby::before { background: var(--cinnabar); opacity: 1; }

.page-contact .channel-card__head {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-contact .channel-card__head h3 {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
  margin: 0;
}

.page-contact .channel-card__field {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--gold-hi);
  line-height: 1.6;
  word-break: break-all;
  margin: 0;
  padding: 10px 12px;
  background: rgba(11, 11, 15, 0.6);
  border: 1px dashed var(--line);
  border-radius: var(--r-sm);
}

.page-contact .channel-card__field--wrap {
  word-break: break-word;
  font-size: 14px;
}

.page-contact .channel-card .copy-btn {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  padding: 6px 14px;
  color: var(--jade);
  background: transparent;
  border: 1px solid var(--jade);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: background var(--tfast) ease, color var(--tfast) ease;
}

.page-contact .channel-card .copy-btn:hover,
.page-contact .channel-card .copy-btn:focus-visible {
  background: rgba(47, 127, 118, 0.18);
  color: var(--paper);
  outline: none;
}

.page-contact .channel-card__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--cold);
}

.page-contact .channel-card__list {
  list-style: none;
  margin: auto 0 0;
  padding: 12px 0 0;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.page-contact .channel-card__list li {
  position: relative;
  padding-left: 16px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--cold);
}

.page-contact .channel-card__list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.65em;
  width: 6px;
  height: 1px;
  background: var(--gold);
}

.page-contact .address-art {
  margin: 4px 0 0;
  border-radius: var(--r-sm);
  overflow: hidden;
}

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

/* ---------- 反馈前确认 ---------- */
.page-contact .precheck {
  margin-top: clamp(44px, 6.5vw, 78px);
}

.page-contact .precheck__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--contact-gap);
}

.page-contact .precheck__panel {
  padding: var(--contact-pad);
  background: var(--cabinet);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}

.page-contact .precheck__lead {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--paper);
  opacity: 0.88;
}

.page-contact .precheck__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-contact .precheck__item {
  position: relative;
}

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

.page-contact .precheck__label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 10px;
  border-radius: var(--r-sm);
  cursor: pointer;
  border-bottom: 1px solid rgba(74, 74, 87, 0.4);
  transition: background var(--tfast) ease;
}

.page-contact .precheck__item:last-child .precheck__label {
  border-bottom-color: transparent;
}

.page-contact .precheck__label:hover {
  background: rgba(30, 30, 40, 0.85);
}

.page-contact .precheck__mark {
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 3px;
  border: 1px solid var(--line);
  border-radius: 3px;
  position: relative;
  transition: border-color var(--tfast) ease, background var(--tfast) ease;
}

.page-contact .precheck__mark::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(42deg) scale(0);
  transform-origin: center;
  transition: transform var(--tfast) ease;
}

.page-contact .precheck__ck:checked + .precheck__label .precheck__mark {
  background: var(--jade);
  border-color: var(--jade);
}

.page-contact .precheck__ck:checked + .precheck__label .precheck__mark::after {
  transform: rotate(42deg) scale(1);
}

.page-contact .precheck__ck:focus-visible + .precheck__label {
  outline: 1px solid var(--gold-hi);
}

.page-contact .precheck__text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-contact .precheck__title {
  font-size: 15px;
  font-weight: 700;
  color: var(--paper);
  line-height: 1.5;
  transition: color var(--tfast) ease;
}

.page-contact .precheck__ck:checked + .precheck__label .precheck__title {
  color: var(--cold);
}

.page-contact .precheck__desc {
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--cold);
}

.page-contact .precheck__desc.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.page-contact .precheck__progress {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  --contact-fill: 0%;
}

.page-contact .precheck__progress-track {
  width: 100%;
  height: 3px;
  background: var(--card);
  border-radius: 2px;
  overflow: hidden;
}

.page-contact .precheck__progress-fill {
  height: 100%;
  width: var(--contact-fill);
  background: linear-gradient(90deg, var(--jade), var(--gold-hi));
  transition: width var(--tmid) ease;
}

.page-contact .precheck__list:has(#ck-1:checked) ~ .precheck__progress { --contact-fill: 25%; }
.page-contact .precheck__list:has(#ck-2:checked) ~ .precheck__progress { --contact-fill: 50%; }
.page-contact .precheck__list:has(#ck-1:checked):has(#ck-2:checked):has(#ck-3:checked) ~ .precheck__progress { --contact-fill: 75%; }
.page-contact .precheck__list:has(#ck-1:checked):has(#ck-2:checked):has(#ck-3:checked):has(#ck-4:checked) ~ .precheck__progress { --contact-fill: 100%; }

.page-contact .precheck__progress-note {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--cold);
}

.page-contact .precheck__aside {
  padding: var(--contact-pad);
  background: linear-gradient(160deg, rgba(201, 162, 39, 0.09), rgba(47, 127, 118, 0.06) 60%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}

.page-contact .precheck__aside h3 {
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  color: var(--gold-hi);
  margin: 0 0 12px;
  line-height: 1.45;
}

.page-contact .precheck__aside p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--paper);
  opacity: 0.86;
}

.page-contact .precheck__aside p:last-child {
  margin-bottom: 0;
}

.page-contact .precheck__aside a {
  color: var(--jade);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 127, 118, 0.5);
  transition: color var(--tfast) ease, border-color var(--tfast) ease;
}

.page-contact .precheck__aside a:hover {
  color: var(--gold-hi);
  border-bottom-color: var(--gold-hi);
}

/* ---------- 处理流程 ---------- */
.page-contact .flow {
  margin-top: clamp(44px, 6.5vw, 78px);
}

.page-contact .flow__intro {
  margin: 0 0 clamp(18px, 2.6vw, 26px);
  max-width: 38em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--cold);
}

.page-contact .flow__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 4px;
}

.page-contact .flow__step {
  position: relative;
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 14px;
  padding: 0 0 clamp(20px, 3vw, 30px);
}

.page-contact .flow__step::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 34px;
  bottom: 4px;
  width: 1px;
  background: var(--line);
}

.page-contact .flow__step:last-child::before {
  display: none;
}

.page-contact .flow__no {
  position: relative;
  z-index: 1;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--gold);
  background: var(--ink);
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: border-color var(--tfast) ease, color var(--tfast) ease;
}

.page-contact .flow__body {
  padding: 6px 0 0;
}

.page-contact .flow__body h3 {
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
  margin: 0 0 8px;
  line-height: 1.45;
}

.page-contact .flow__detail {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--cold);
  transition: color var(--tfast) ease;
}

.page-contact .flow__step:hover .flow__no {
  border-color: var(--gold-hi);
  color: var(--gold-hi);
}

.page-contact .flow__step:hover .flow__detail {
  color: var(--paper);
  opacity: 0.92;
}

/* ---------- 受理边界 ---------- */
.page-contact .limits {
  margin-top: clamp(44px, 6.5vw, 78px);
}

.page-contact .limits__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--contact-gap);
}

.page-contact .limits__item {
  padding: var(--contact-pad);
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cinnabar);
  border-radius: var(--r-sm);
}

.page-contact .limits__item p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--cold);
}

.page-contact .limits__note {
  margin-top: clamp(16px, 2.4vw, 22px);
  font-size: 14px;
  line-height: 1.85;
  color: var(--cold);
}

.page-contact .limits__note a {
  color: var(--jade);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 127, 118, 0.5);
}

.page-contact .limits__note a:hover {
  color: var(--gold-hi);
  border-bottom-color: var(--gold-hi);
}

/* ---------- 延伸入口 ---------- */
.page-contact .cross {
  margin-top: clamp(44px, 6.5vw, 78px);
  padding-top: clamp(20px, 3vw, 30px);
  border-top: 1px solid var(--line);
}

.page-contact .cross__title {
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--cold);
  margin: 0 0 16px;
  text-transform: uppercase;
}

.page-contact .cross__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  overflow: hidden;
}

.page-contact .cross__list li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: var(--ink);
}

.page-contact .cross__list a {
  font-size: 15px;
  font-weight: 700;
  color: var(--paper);
  text-decoration: none;
  transition: color var(--tfast) ease;
}

.page-contact .cross__list a:hover {
  color: var(--gold-hi);
}

.page-contact .cross__desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--cold);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact {
    --contact-gap: 20px;
  }

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

  .page-contact .channel-card--address {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1fr minmax(220px, 320px);
    grid-template-areas:
      "head art"
      "field art"
      "copy art"
      "note art"
      "list art";
    align-items: start;
    column-gap: 22px;
  }

  .page-contact .channel-card--address .channel-card__head { grid-area: head; }
  .page-contact .channel-card--address .channel-card__field { grid-area: field; }
  .page-contact .channel-card--address .copy-btn { grid-area: copy; justify-self: start; }
  .page-contact .channel-card--address .channel-card__note { grid-area: note; }
  .page-contact .channel-card--address .channel-card__list { grid-area: list; padding-top: 14px; }
  .page-contact .channel-card--address .address-art { grid-area: art; margin: 0; align-self: stretch; }
  .page-contact .channel-card--address .address-art img { height: 100%; object-fit: cover; }

  .page-contact .precheck__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  }

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

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

@media (min-width: 1060px) {
  .page-contact .channels__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .channel-card--address {
    display: flex;
    grid-column: auto;
    columns: unset;
  }

  .page-contact .channel-card--address .address-art img {
    height: auto;
    object-fit: cover;
  }

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

@media (max-width: 520px) {
  .page-contact .contact-hero__facts {
    flex-direction: column;
    gap: 8px;
  }

  .page-contact .flow__step {
    grid-template-columns: 34px 1fr;
    gap: 12px;
  }

  .page-contact .flow__no {
    width: 32px;
    height: 32px;
    font-size: 12px;
  }

  .page-contact .flow__step::before {
    left: 16px;
    top: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}