.page-contact {
  --pc-plate: #10263A;
  padding-top: clamp(18px, 3vw, 34px);
  padding-bottom: clamp(56px, 8vw, 104px);
}

.page-contact .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  margin-bottom: clamp(30px, 5vw, 58px);
  padding: clamp(20px, 4vw, 46px);
  background: var(--panel-700);
  border: 2px solid var(--line-600);
  box-shadow: var(--shadow-hard);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  width: 8px;
  height: 72px;
  background: var(--cyan-400);
}

.page-contact .contact-hero .eyebrow {
  color: var(--cyan-200);
}

.page-contact .contact-hero h1 {
  margin: 14px 0 18px;
  font-family: var(--font-display);
  font-size: clamp(28px, 6vw, 58px);
  line-height: 1.1;
  letter-spacing: 0.06em;
  color: var(--paper-050);
  max-width: 20ch;
}

.page-contact .contact-hero__lede {
  margin: 0 0 24px;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--paper-050);
}

.page-contact .contact-hero__tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

/* ---------- 章节骨架 ---------- */
.page-contact .c-section {
  margin-bottom: clamp(34px, 5vw, 68px);
}

.page-contact .c-section:last-of-type {
  margin-bottom: clamp(24px, 3vw, 36px);
}

.page-contact .c-section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  padding-bottom: 12px;
  margin-bottom: clamp(18px, 3vw, 28px);
  border-bottom: 1px solid var(--line-600);
}

.page-contact .c-section__head .section-num {
  color: var(--cyan-400);
  line-height: 1;
}

.page-contact .c-section__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.9vw, 31px);
  letter-spacing: 0.05em;
  color: var(--paper-050);
}

.page-contact .c-section__note {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--slate-400);
}

/* ---------- 01 联系通道 ---------- */
.page-contact .channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.page-contact .channel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(18px, 2.6vw, 26px);
  background: var(--panel-700);
  border: 2px solid var(--line-600);
  box-shadow: var(--shadow-hard);
  transition: border-color 180ms ease, transform 180ms ease;
}

.page-contact .channel:hover {
  border-color: var(--cyan-400);
  transform: translateY(-2px);
}

.page-contact .channel--self {
  background: var(--teal-800);
  border-color: var(--teal-line);
}

.page-contact .channel--self:hover {
  border-color: var(--cyan-200);
}

.page-contact .channel__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--cyan-200);
}

.page-contact .channel__value {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.8vw, 18px);
  line-height: 1.5;
  color: var(--paper-050);
  text-decoration: none;
  overflow-wrap: anywhere;
  border-bottom: 1px dashed var(--cyan-400);
  padding-bottom: 3px;
  transition: color 180ms ease, border-color 180ms ease;
}

.page-contact .channel__value:hover,
.page-contact .channel__value:focus-visible {
  color: var(--cyan-200);
  border-bottom-color: var(--cyan-200);
}

.page-contact .channel__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--paper-050);
}

.page-contact .channel__foot {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-600);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--slate-400);
}

/* ---------- 02 咨询前准备 ---------- */
.page-contact .prep {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
  counter-reset: ready 0;
}

.page-contact .prep__lead {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate-400);
}

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

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

.page-contact .checklist__label {
  position: relative;
  display: block;
  padding: 12px 14px 12px 42px;
  background: var(--panel-700);
  border: 1px solid var(--line-600);
  cursor: pointer;
  transition: border-color 180ms ease, background 180ms ease;
}

.page-contact .checklist__label:hover {
  border-color: var(--cyan-400);
}

.page-contact .checklist__box {
  position: absolute;
  top: 16px;
  left: 14px;
  width: 1px;
  height: 1px;
  opacity: 0;
  margin: 0;
}

.page-contact .checklist__box:checked {
  counter-increment: ready;
}

.page-contact .checklist__mark {
  position: absolute;
  top: 15px;
  left: 14px;
  width: 16px;
  height: 16px;
  border: 2px solid var(--line-600);
  background: transparent;
  transition: background 140ms ease, border-color 140ms ease;
}

.page-contact .checklist__box:checked + .checklist__mark {
  background: var(--cyan-400);
  border-color: var(--cyan-400);
}

.page-contact .checklist__box:focus-visible + .checklist__mark {
  outline: 2px solid var(--amber-400);
  outline-offset: 2px;
}

.page-contact .checklist__title {
  display: block;
  font-size: 15.5px;
  color: var(--paper-050);
  letter-spacing: 0.02em;
}

.page-contact .checklist__desc {
  display: block;
  margin-top: 4px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--slate-400);
}

.page-contact .checklist__box:checked ~ .checklist__title {
  color: var(--cyan-200);
}

.page-contact .checklist__tally {
  margin: 18px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-600);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--amber-400);
}

.page-contact .checklist__count::before {
  content: counter(ready);
}

.page-contact .prep__figure {
  margin: 0;
}

.page-contact .prep__figure .figure__caption {
  color: var(--slate-400);
  font-size: 12.5px;
  line-height: 1.7;
}

/* ---------- 03 回复时段 ---------- */
.page-contact .timing {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  padding: 0;
  background: var(--line-600);
  border: 2px solid var(--line-600);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-contact .timing__cell {
  padding: clamp(18px, 2.6vw, 28px);
  background: var(--panel-700);
}

.page-contact .timing__num {
  margin: 0 0 6px;
  font-size: clamp(20px, 2.6vw, 27px);
  letter-spacing: 0.02em;
  color: var(--cyan-400);
}

.page-contact .timing__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--amber-400);
}

.page-contact .timing__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper-050);
}

.page-contact .timing__hint {
  margin: 16px 0 0;
  max-width: 70ch;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--slate-400);
}

/* ---------- 04 问题分流 ---------- */
.page-contact .routes {
  padding: 0;
  border: 2px solid var(--line-600);
  background: var(--ink-900);
  box-shadow: var(--shadow-hard);
}

.page-contact .routes__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .routes__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding: clamp(16px, 2.4vw, 22px);
  border-bottom: 1px solid var(--line-600);
}

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

.page-contact .routes__tag {
  align-self: start;
  justify-self: start;
  padding: 3px 8px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ink-900);
  background: var(--cyan-200);
}

.page-contact .routes__body {
  min-width: 0;
}

.page-contact .routes__q {
  margin: 0 0 6px;
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--paper-050);
}

.page-contact .routes__a {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--slate-400);
}

.page-contact .routes__go {
  justify-self: start;
  align-self: center;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-400);
  padding-bottom: 2px;
  transition: color 160ms ease, border-color 160ms ease;
}

.page-contact .routes__go:hover,
.page-contact .routes__go:focus-visible {
  color: var(--amber-400);
  border-bottom-color: var(--amber-400);
}

/* ---------- 05 地址与备案 ---------- */
.page-contact .coords {
  display: grid;
  grid-template-columns: 54px 1fr;
  grid-template-areas:
    "city body"
    "photo photo";
  background: var(--panel-700);
  border: 2px solid var(--line-600);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-contact .coords__city {
  grid-area: city;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 0;
  background: var(--ink-900);
  border-right: 1px solid var(--line-600);
  font-family: var(--font-display);
}

.page-contact .coords__city span:first-child {
  writing-mode: vertical-rl;
  font-size: 20px;
  letter-spacing: 0.36em;
  color: var(--cyan-400);
}

.page-contact .coords__city .mono {
  font-size: 10.5px;
  letter-spacing: 0.2em;
  color: var(--slate-400);
}

.page-contact .coords__body {
  grid-area: body;
  padding: clamp(16px, 2.6vw, 30px);
  min-width: 0;
}

.page-contact .coords__k {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  color: var(--slate-400);
}

.page-contact .coords__v {
  margin: 0 0 18px;
  font-size: clamp(14px, 1.7vw, 16.5px);
  line-height: 1.6;
  color: var(--paper-050);
  overflow-wrap: anywhere;
}

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

.page-contact .coords__figure {
  grid-area: photo;
  margin: 0;
  border-top: 1px solid var(--line-600);
}

.page-contact .coords__figure img {
  display: block;
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.page-contact .coords__foot {
  margin: 16px 0 0;
  max-width: 68ch;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--slate-400);
}

.page-contact .icp {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 18px 0 0;
  padding: 6px 12px;
  background: var(--amber-200);
}

.page-contact .icp__label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  color: var(--ink-900);
}

.page-contact .icp__value {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--ink-900);
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 720px) {
  .page-contact .timing {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .routes__item {
    grid-template-columns: 76px 1fr;
    align-items: start;
    column-gap: 18px;
  }

  .page-contact .routes__go {
    grid-column: 2;
    justify-self: start;
  }

  .page-contact .coords {
    grid-template-columns: 54px 1fr 1fr;
    grid-template-areas: "city .page-contact photo";
  }

  .page-contact .coords__figure {
    border-top: 0;
    border-left: 1px solid var(--line-600);
  }

  .page-contact .coords__figure img {
    height: 100%;
    min-height: 240px;
  }
}

@media (min-width: 900px) {
  .page-contact .channels {
    grid-template-columns: repeat(3, 1fr);
    align-items: stretch;
  }

  .page-contact .prep {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: start;
    gap: clamp(24px, 3vw, 40px);
  }

  .page-contact .routes__item {
    grid-template-columns: 76px 1fr 150px;
  }

  .page-contact .routes__go {
    grid-column: 3;
    justify-self: end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .checklist__label,
  .page-contact .routes__go {
    transition: none;
  }

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