.page-contact {
  --contact-gap: clamp(20px, 3vw, 40px);
  --contact-pad: clamp(18px, 2.6vw, 30px);
  --contact-card-bg: linear-gradient(158deg, rgba(13, 43, 74, .92), rgba(6, 26, 46, .96));
  background: var(--abyss);
  color: var(--mist);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding-bottom: clamp(26px, 4vw, 52px);
}

.page-contact .contact-hero__frame {
  position: relative;
  height: clamp(200px, 38vw, 420px);
  overflow: hidden;
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

.page-contact .contact-hero__img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  opacity: .78;
}

.page-contact .contact-hero__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(6, 26, 46, .12) 0%, rgba(6, 26, 46, .62) 58%, var(--abyss) 100%),
    repeating-linear-gradient(90deg, rgba(61, 242, 210, .10) 0 1px, transparent 1px 96px);
}

.page-contact .contact-hero__coord {
  position: absolute;
  right: clamp(14px, 3vw, 34px);
  bottom: clamp(12px, 2vw, 22px);
  z-index: 2;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--cyan);
  opacity: .8;
}

.page-contact .contact-hero__inner {
  position: relative;
  margin-top: clamp(-72px, -4vw, -30px);
  display: grid;
  gap: 16px;
}

.page-contact .crumbs {
  font-size: 13px;
  color: var(--steel);
}

.page-contact .crumbs a {
  color: var(--steel);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

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

.page-contact .contact-hero__title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(30px, 6vw, 58px);
  line-height: 1.08;
  letter-spacing: .01em;
  margin: 0;
  max-width: 18ch;
}

.page-contact .contact-hero__lead {
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist-soft);
  max-width: 58ch;
  margin: 0;
}

.page-contact .contact-hero__facts {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-contact .contact-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 16px;
  border: 1px solid var(--steel-line);
  border-radius: var(--radius-pill);
  background: rgba(13, 43, 74, .5);
}

.page-contact .contact-hero__num {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 17px;
  color: var(--orange);
}

.page-contact .contact-hero__cap {
  font-size: 13px;
  color: var(--steel);
}

.page-contact .contact-index {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 6px;
  border-top: 1px solid var(--cyan-line);
  margin-top: 6px;
}

.page-contact .contact-index a {
  display: inline-block;
  padding: 7px 15px;
  border: 1px solid var(--steel-line);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-family: var(--font-num);
  color: var(--steel);
  text-decoration: none;
  transition: color .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease);
}

.page-contact .contact-index a:hover,
.page-contact .contact-index a:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  background: var(--cyan-soft);
}

/* ---------- 主体栅格 ---------- */
.page-contact .contact-grid {
  display: grid;
  gap: clamp(30px, 4vw, 56px);
  padding-block: clamp(34px, 6vw, 78px);
}

.page-contact .contact-grid__col-a,
.page-contact .contact-grid__col-b {
  display: grid;
  gap: clamp(30px, 4vw, 56px);
  align-content: start;
  min-width: 0;
}

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

/* ---------- 区块头 ---------- */
.page-contact .section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  padding-bottom: 14px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--cyan-line);
}

.page-contact .section-head__index {
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-contact .section-head__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(21px, 3vw, 30px);
  line-height: 1.2;
  margin: 0;
  flex: 1 1 auto;
  min-width: 0;
}

.page-contact .section-head__meta {
  flex: 1 1 100%;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--steel);
}

/* ---------- 三张渠道卡 ---------- */
.page-contact .contact-cards {
  display: grid;
  gap: 14px;
}

.page-contact .contact-card {
  position: relative;
  display: grid;
  gap: 10px;
  padding: var(--contact-pad);
  border-radius: var(--radius-md);
  background: var(--contact-card-bg);
  border: 1px solid var(--steel-line);
  overflow: hidden;
}

.page-contact .contact-card::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: 18px;
  bottom: 18px;
  width: 3px;
  border-radius: var(--radius-pill);
  background: var(--cyan);
}

.page-contact .contact-card--phone::before { background: var(--amber); }
.page-contact .contact-card--post::before { background: var(--orange); }

.page-contact .contact-card__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(18px, 2.2vw, 22px);
  line-height: 1.3;
}

.page-contact .contact-card__value {
  margin: 0;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(17px, 2.4vw, 23px);
  line-height: 1.4;
  letter-spacing: .02em;
  color: var(--cyan);
  word-break: break-word;
}

.page-contact .contact-card__value--mail { font-size: clamp(15px, 1.9vw, 19px); }

.page-contact .contact-card--phone .contact-card__value { color: var(--orange); }
.page-contact .contact-card--post .contact-card__value { color: var(--mist); font-size: clamp(16px, 2vw, 20px); }

.page-contact .contact-card__desc {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist-soft);
}

.page-contact .contact-card__hint {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--steel);
}

.page-contact .contact-card .btn { justify-self: start; margin-top: 4px; }

/* ---------- 回复时段 ---------- */
.page-contact .reply-board {
  display: grid;
  gap: 14px;
}

.page-contact .reply-board__clock {
  padding: var(--contact-pad);
  border-radius: var(--radius-lg);
  border: 1px solid var(--cyan-line);
  background:
    radial-gradient(120% 140% at 8% 0%, rgba(61, 242, 210, .14), transparent 62%),
    rgba(13, 43, 74, .55);
}

.page-contact .reply-board__clock .kpi {
  display: block;
  font-size: clamp(28px, 5.2vw, 46px);
  line-height: 1.05;
}

.page-contact .reply-board__clock-note {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist-soft);
}

.page-contact .reply-board__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--steel-line);
}

.page-contact .reply-board__list li {
  display: grid;
  gap: 4px;
  padding: 14px 2px;
  border-bottom: 1px solid var(--steel-line);
  transition: background .25s var(--ease);
}

.page-contact .reply-board__list li:hover { background: rgba(61, 242, 210, .05); }

.page-contact .reply-board__num {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 17px;
  color: var(--amber);
}

.page-contact .reply-board__text {
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist-soft);
}

/* ---------- 来信准备 ---------- */
.page-contact .prepare-card {
  display: grid;
  gap: 18px;
  padding: var(--contact-pad);
  border-radius: var(--radius-lg);
  border: 1px solid var(--steel-line);
  background: rgba(13, 43, 74, .5);
}

.page-contact .prepare-card__media {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--cyan-line);
}

.page-contact .prepare-card__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(80% 80% at 50% 50%, rgba(61, 242, 210, .10), transparent 70%);
  pointer-events: none;
}

.page-contact .checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .checklist li {
  position: relative;
  padding-inline-start: 30px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--mist-soft);
}

.page-contact .checklist li::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: .5em;
  width: 14px;
  height: 14px;
  border-radius: 5px;
  border: 1px solid var(--cyan);
  background: var(--cyan-soft);
}

.page-contact .prepare-card__more {
  border-top: 1px solid var(--cyan-line);
  padding-top: 14px;
}

.page-contact .prepare-card__more summary {
  cursor: pointer;
  font-size: 14px;
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--cyan);
  list-style: none;
}

.page-contact .prepare-card__more summary::-webkit-details-marker { display: none; }

.page-contact .prepare-card__more summary::after {
  content: " ＋";
  font-family: var(--font-num);
}

.page-contact .prepare-card__more[open] summary::after { content: " －"; }

.page-contact .prepare-card__more p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--steel);
}

/* ---------- 右侧旁注卡 ---------- */
.page-contact .contact-aside {
  padding: var(--contact-pad);
  border-radius: var(--radius-md);
  border: 1px solid var(--steel-line);
  background: rgba(3, 16, 28, .62);
}

.page-contact .contact-aside__label {
  margin: 0 0 8px;
  font-family: var(--font-num);
  font-size: 12.5px;
  letter-spacing: .18em;
  color: var(--blue);
}

.page-contact .contact-aside__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist-soft);
}

/* ---------- 地址 ---------- */
.page-contact .contact-section--band {
  padding-bottom: clamp(34px, 6vw, 78px);
}

.page-contact .address-band {
  display: grid;
  gap: 20px;
  padding: var(--contact-pad);
  border-radius: var(--radius-lg);
  border: 1px solid var(--cyan-line);
  background:
    linear-gradient(120deg, rgba(27, 76, 99, .40), rgba(6, 26, 46, .9) 68%),
    rgba(13, 43, 74, .6);
}

.page-contact .address-band__label {
  margin: 0 0 6px;
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--steel);
}

.page-contact .address-band__value {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(20px, 3.2vw, 30px);
  line-height: 1.35;
  color: var(--mist);
}

.page-contact .address-band__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist-soft);
  max-width: 60ch;
}

.page-contact .address-band__side {
  margin: 0;
  padding-top: 16px;
  border-top: 1px solid var(--steel-line);
  font-size: 13px;
  line-height: 1.8;
  letter-spacing: .1em;
  color: var(--steel);
}

/* ---------- 常见来信 ---------- */
.page-contact .topic-list {
  display: grid;
  border-top: 1px solid var(--steel-line);
}

.page-contact .topic-row {
  display: grid;
  gap: 6px;
  padding: 16px 6px;
  border-bottom: 1px solid var(--steel-line);
  transition: background .25s var(--ease), padding-inline-start .25s var(--ease);
}

.page-contact .topic-row:hover {
  background: rgba(61, 242, 210, .05);
  padding-inline-start: 14px;
}

.page-contact .topic-row__name {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.45;
}

.page-contact .topic-row__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist-soft);
}

.page-contact .topic-row__desc a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-line);
}

.page-contact .topic-row__desc a:hover { border-bottom-color: var(--cyan); }

.page-contact .topic-row__flow { margin: 2px 0 0; }

.page-contact .topic-tail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin: 22px 0 0;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  border: 1px dashed var(--cyan-line);
  background: rgba(13, 43, 74, .45);
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist-soft);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .contact-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .contact-card--mail {
    grid-column: 1 / -1;
  }

  .page-contact .address-band {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: start;
  }

  .page-contact .address-band__side {
    writing-mode: vertical-rl;
    border-top: 0;
    border-inline-start: 1px solid var(--steel-line);
    padding-top: 0;
    padding-inline-start: 18px;
    margin: 0;
    max-height: 340px;
  }

  .page-contact .topic-row {
    grid-template-columns: 190px minmax(0, 1fr) 148px;
    align-items: start;
    gap: 16px;
  }

  .page-contact .topic-row__flow { margin: 0; }
}

@media (min-width: 1040px) {
  .page-contact .contact-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

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

  .page-contact .contact-card--mail { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-index a,
  .page-contact .reply-board__list li,
  .page-contact .topic-row {
    transition: none;
  }
}