.page-contact {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

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

/* ============ 首屏 ============ */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4vw, 44px) 0 clamp(46px, 6.5vw, 88px);
  background:
    radial-gradient(120% 150% at 86% 4%, rgba(15, 156, 151, 0.24), transparent 58%),
    linear-gradient(158deg, var(--night) 0%, var(--indigo) 58%, var(--night) 100%);
  color: var(--paper);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -44%;
  width: 64%;
  height: 130%;
  background-image: repeating-linear-gradient(118deg, var(--line-dark-soft) 0 1px, transparent 1px 24px);
  opacity: 0.6;
  pointer-events: none;
}

.page-contact .contact-hero > .wrap {
  position: relative;
  z-index: 1;
}

.page-contact .contact-hero .breadcrumb {
  margin-bottom: clamp(26px, 4vw, 48px);
}

.page-contact .breadcrumb-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  font-size: 13px;
  letter-spacing: 0.06em;
}

.page-contact .contact-hero .breadcrumb-link {
  color: var(--lake-soft);
  text-decoration: none;
}

.page-contact .contact-hero .breadcrumb-link:hover,
.page-contact .contact-hero .breadcrumb-link:focus-visible {
  color: var(--gold-soft);
  text-decoration: underline;
}

.page-contact .contact-hero .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin: 0 10px;
  color: rgba(138, 217, 212, 0.48);
}

.page-contact .contact-hero .breadcrumb-current {
  color: var(--gold-soft);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(30px, 4vw, 52px);
}

.page-contact .side-note {
  writing-mode: horizontal-tb;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--gold-soft);
}

.page-contact h1 {
  margin: 0 0 20px;
  font-size: clamp(30px, 6vw, 58px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--warm);
}

.page-contact .contact-hero__intro {
  margin: 0;
  max-width: 42em;
  font-size: clamp(16px, 1.1vw, 18px);
  line-height: 1.8;
  color: rgba(244, 247, 250, 0.84);
}

.page-contact .hero-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.page-contact .hero-fact {
  padding: 16px 18px 18px;
  border-left: 2px solid var(--lake);
  background: rgba(244, 247, 250, 0.06);
  display: grid;
  gap: 4px;
}

.page-contact .hero-fact__value {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
}

.page-contact .hero-fact__unit {
  font-size: 13px;
  color: var(--lake-soft);
}

.page-contact .hero-fact__label {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: rgba(244, 247, 250, 0.68);
}

/* ============ 双栏主体 ============ */
.page-contact .contact-split {
  padding: clamp(44px, 6vw, 88px) 0;
}

.page-contact .contact-split__grid {
  display: grid;
  gap: clamp(34px, 4.5vw, 58px);
}

.page-contact .contact-rail,
.page-contact .contact-form-col {
  min-width: 0;
}

.page-contact .channel-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-contact .channel-card {
  position: relative;
  padding: 20px 22px 22px;
  background: var(--warm);
  border-top: 3px solid var(--lake);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
  box-shadow: inset 0 0 0 1px var(--line-light);
  transition: box-shadow 0.3s ease-out, transform 0.3s ease-out;
}

.page-contact .channel-card:hover {
  box-shadow: inset 0 0 0 1px var(--line-lake);
  transform: translateY(-2px);
}

.page-contact .channel-label {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--slate);
}

.page-contact .channel-value {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: clamp(17px, 1.5vw, 21px);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--night);
  word-break: break-word;
  -webkit-user-select: all;
  user-select: all;
}

.page-contact .channel-use {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--slate);
}

.page-contact .contact-rail__figure {
  margin: 24px 0 0;
}

.page-contact .contact-rail__figure img {
  display: block;
  width: 100%;
  height: auto;
  background: var(--warm);
  clip-path: polygon(var(--cut) 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%, 0 var(--cut));
}

.page-contact .contact-rail__caption {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--slate);
}

/* ============ 留言区 ============ */
.page-contact .msg-flow {
  margin: 26px 0 22px;
}

.page-contact .msg-flow img {
  display: block;
  width: 100%;
  height: auto;
}

.page-contact .msg-card {
  position: relative;
  padding: clamp(22px, 3vw, 38px);
  background: var(--warm);
  clip-path: polygon(var(--cut) 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%, 0 var(--cut));
  box-shadow: inset 0 0 0 1px var(--line-lake);
}

.page-contact .msg-types {
  border: 0;
  margin: 0 0 24px;
  padding: 0;
}

.page-contact .msg-types legend {
  padding: 0;
}

.page-contact .type-row {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

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

.page-contact .type-chip {
  display: inline-flex;
  align-items: center;
  padding: 9px 17px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--slate);
  background: var(--paper);
  border: 1px solid var(--line-light);
  cursor: pointer;
  clip-path: polygon(9px 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%, 0 9px);
  transition: color 0.2s ease-out, background 0.2s ease-out, border-color 0.2s ease-out;
}

.page-contact .type-chip:hover {
  border-color: var(--line-lake);
  color: var(--night);
}

.page-contact .type-radio:checked + .type-chip {
  color: var(--night);
  font-weight: 700;
  background: linear-gradient(180deg, var(--gold-soft), var(--warm));
  border-color: var(--gold);
}

.page-contact .type-radio:focus-visible + .type-chip {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.page-contact .field-grid {
  display: grid;
  gap: 18px;
}

.page-contact .field {
  display: grid;
  gap: 9px;
}

.page-contact .field--wide {
  margin-top: 18px;
}

.page-contact .field-label {
  display: block;
  font-size: 12.5px;
  letter-spacing: 0.16em;
  color: var(--slate);
}

.page-contact .field-input,
.page-contact .field-textarea {
  width: 100%;
  box-sizing: border-box;
  padding: 12px 15px;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line-light);
  border-radius: 0;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
  transition: border-color 0.2s ease-out, background 0.2s ease-out, box-shadow 0.2s ease-out;
}

.page-contact .field-textarea {
  resize: vertical;
  min-height: 138px;
  display: block;
}

.page-contact .field-input:focus,
.page-contact .field-textarea:focus {
  outline: none;
  background: var(--warm);
  border-color: var(--gold);
  box-shadow: inset 0 0 0 2px rgba(232, 180, 74, 0.35);
}

.page-contact .field-input.mono {
  font-family: var(--font-mono);
}

.page-contact .msg-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 26px;
}

.page-contact .msg-note {
  margin: 0;
  flex: 1 1 250px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--slate);
}

/* ============ 回复节奏 ============ */
.page-contact .contact-timing {
  padding: clamp(44px, 6vw, 88px) 0;
  background: var(--warm);
  border-top: 1px solid var(--line-light);
  border-bottom: 1px solid var(--line-light);
}

.page-contact .reply-track {
  list-style: none;
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: 0;
  display: grid;
  gap: 24px;
}

.page-contact .reply-step {
  position: relative;
  padding-left: 20px;
}

.page-contact .reply-step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--lake), transparent);
}

.page-contact .reply-step__tag {
  display: inline-block;
  margin: 0 0 12px;
  padding: 4px 11px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--gold);
  background: var(--night);
}

.page-contact .reply-step__title {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--night);
}

.page-contact .reply-step__body {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--slate);
}

/* ============ 勘误与协作 ============ */
.page-contact .contact-collab {
  padding: clamp(44px, 6vw, 88px) 0;
}

.page-contact .collab-grid {
  display: grid;
  gap: 20px;
  margin-top: clamp(26px, 3.5vw, 42px);
}

.page-contact .collab-card {
  padding: 26px 26px 30px;
  background: var(--warm);
  border-top: 3px solid var(--wine);
  box-shadow: inset 0 0 0 1px var(--line-light);
}

.page-contact .collab-card--lake {
  border-top-color: var(--lake);
}

.page-contact .collab-card__title {
  margin: 0 0 12px;
  font-size: clamp(19px, 1.9vw, 22px);
  font-weight: 700;
  line-height: 1.45;
  color: var(--night);
}

.page-contact .collab-card__body {
  margin: 0 0 18px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--slate);
}

.page-contact .collab-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-contact .collab-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink);
}

.page-contact .collab-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  background: var(--lake-soft);
  transform: rotate(45deg);
}

.page-contact .collab-card--lake .collab-list li::before {
  background: var(--gold);
}

/* ============ 地址与服务地区 ============ */
.page-contact .contact-place {
  position: relative;
  padding: clamp(46px, 6vw, 86px) 0;
  background: linear-gradient(150deg, var(--indigo) 0%, var(--night) 100%);
  color: var(--paper);
  overflow: hidden;
}

.page-contact .contact-place__grid {
  display: grid;
  gap: clamp(30px, 4vw, 52px);
  align-items: center;
}

.page-contact .contact-place .section-index {
  color: var(--gold);
}

.page-contact .contact-place .section-title {
  color: var(--warm);
}

.page-contact .place-list {
  margin: 26px 0 0;
  display: grid;
  gap: 18px;
}

.page-contact .place-item {
  display: grid;
  gap: 7px;
  padding-left: 16px;
  border-left: 2px solid var(--line-dark);
}

.page-contact .place-key {
  font-size: 12.5px;
  letter-spacing: 0.2em;
  color: var(--lake-soft);
}

.page-contact .place-value {
  margin: 0;
  font-size: 16px;
  line-height: 1.72;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .place-value.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  color: var(--gold-soft);
}

.page-contact .place-note {
  margin: 24px 0 0;
  max-width: 46em;
  font-size: 13.5px;
  line-height: 1.78;
  color: rgba(244, 247, 250, 0.68);
}

.page-contact .place-deco {
  color: var(--lake);
}

.page-contact .place-deco__svg {
  display: block;
  width: 100%;
  max-width: 460px;
  height: auto;
}

/* ============ 收束 ============ */
.page-contact .contact-close {
  padding: clamp(40px, 5.5vw, 78px) 0 clamp(48px, 6.5vw, 92px);
  background: var(--paper);
}

.page-contact .contact-close__inner {
  display: grid;
  gap: 22px;
}

.page-contact .contact-close__line {
  margin: 0;
  max-width: 34em;
  font-size: clamp(17px, 1.8vw, 21px);
  font-weight: 600;
  line-height: 1.62;
  color: var(--night);
}

.page-contact .contact-close__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ============ 响应式 ============ */
@media (min-width: 720px) {
  .page-contact .field-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-contact .reply-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(16px, 2.4vw, 30px);
  }

  .page-contact .reply-step {
    padding-left: 0;
    padding-top: 22px;
    border-top: 2px solid var(--line-lake);
  }

  .page-contact .reply-step::before {
    display: none;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(250px, 0.78fr);
    align-items: end;
  }

  .page-contact .contact-place__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
  }

  .page-contact .place-deco {
    justify-self: end;
  }
}

@media (min-width: 1000px) {
  .page-contact .contact-split__grid {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.6fr);
    align-items: start;
  }

  .page-contact .contact-rail {
    position: relative;
    padding-right: clamp(28px, 3vw, 46px);
  }

  .page-contact .contact-rail::after {
    content: "";
    position: absolute;
    top: 8px;
    bottom: 8px;
    right: 0;
    width: 2px;
    background: linear-gradient(180deg, transparent, var(--lake) 16%, var(--lake-soft) 54%, transparent);
    transform: rotate(1.4deg);
    transform-origin: top center;
  }
}

@media (min-width: 1200px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(300px, 0.7fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .field-input,
  .page-contact .field-textarea,
  .page-contact .type-chip {
    transition: none;
  }

  .page-contact .channel-card:hover {
    transform: none;
  }
}