.page-contact {
  --pc-line: rgba(110, 123, 148, 0.32);
  --pc-shadow: 0 18px 44px rgba(4, 9, 20, 0.46);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-contact .breadcrumbs {
  padding-top: clamp(16px, 2.4vw, 28px);
}

.page-contact .section {
  padding-block: clamp(32px, 5vw, 60px);
  border-top: 1px solid var(--pc-line);
}

.page-contact .section-head {
  margin-bottom: clamp(18px, 2.6vw, 30px);
}

.page-contact .section-head__title {
  font-size: clamp(24px, 3.6vw, 42px);
  font-weight: 900;
  letter-spacing: -0.015em;
  line-height: 1.15;
  color: var(--white);
  margin: 0 0 10px;
}

.page-contact .section-head__note {
  max-width: 60ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--stone);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  display: grid;
  gap: clamp(22px, 3vw, 38px);
  padding-block: clamp(20px, 3.4vw, 40px) clamp(30px, 4.4vw, 56px);
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .contact-hero__intro {
  max-width: 68ch;
}

.page-contact .contact-hero h1 {
  margin: 12px 0 16px;
  font-size: clamp(40px, 7.4vw, 92px);
  font-weight: 900;
  line-height: 0.98;
  letter-spacing: -0.025em;
  color: var(--white);
}

.page-contact .contact-hero__lede {
  margin: 0;
  max-width: 56ch;
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.8;
  color: #cfd6e3;
}

.page-contact .mailplate {
  position: relative;
  padding: clamp(18px, 2.6vw, 30px) clamp(16px, 2.4vw, 28px) clamp(20px, 2.8vw, 32px);
  background: linear-gradient(152deg, var(--ink-2) 0%, var(--ink-3) 58%, #0c1830 100%);
  border: 1px solid rgba(233, 178, 74, 0.42);
  border-left: 8px solid var(--gold);
  box-shadow: var(--pc-shadow);
  overflow: hidden;
}

.page-contact .mailplate::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(244, 241, 233, 0.055) 0 1px,
    transparent 1px 46px
  );
  pointer-events: none;
}

.page-contact .mailplate__label {
  position: relative;
  z-index: 1;
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-contact .mailplate__addr {
  position: relative;
  z-index: 1;
  display: inline-block;
  max-width: 100%;
  margin: 0 0 14px;
  padding-bottom: 10px;
  font-family: var(--font-mono);
  font-size: clamp(14px, 4.6vw, 64px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--white);
  word-break: break-word;
  box-shadow: inset 0 -3px 0 var(--gold);
}

.page-contact .mailplate__note {
  position: relative;
  z-index: 1;
  margin: 0;
  max-width: 52ch;
  font-size: 14px;
  line-height: 1.7;
  color: #b9c3d6;
}

/* ---------- 渠道阶梯卡 ---------- */
.page-contact .channels {
  display: grid;
  gap: 14px;
}

.page-contact .channel {
  position: relative;
  background: var(--ink-2);
  border: 1px solid var(--pc-line);
  border-left: 6px solid var(--blue);
  box-shadow: var(--pc-shadow);
  padding: clamp(16px, 2vw, 22px);
}

.page-contact .channel--1 { border-left-color: var(--blue); }
.page-contact .channel--2 { border-left-color: var(--gold); }
.page-contact .channel--3 { border-left-color: var(--clay); }

.page-contact .channel > summary {
  list-style: none;
  cursor: pointer;
  position: relative;
  display: grid;
  gap: 7px;
  padding-right: 30px;
}

.page-contact .channel > summary::-webkit-details-marker {
  display: none;
}

.page-contact .channel > summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: -2px;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  color: var(--gold);
  transition: transform 0.25s var(--ease);
}

.page-contact .channel[open] > summary::after {
  content: "\2212";
}

.page-contact .channel__idx {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-contact .channel__title {
  font-size: clamp(19px, 2.2vw, 24px);
  font-weight: 900;
  color: var(--white);
  letter-spacing: -0.01em;
}

.page-contact .channel__value {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.55;
  letter-spacing: 0.02em;
  color: var(--gold);
  word-break: break-word;
}

.page-contact .channel__hint {
  font-size: 12px;
  color: var(--stone);
}

.page-contact .channel__body {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed rgba(110, 123, 148, 0.4);
}

.page-contact .channel__body p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.75;
  color: #c2cbdb;
}

.page-contact .channel__meta {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--green);
}

.page-contact .channel-figure {
  margin: 0;
}

.page-contact .figure__media {
  position: relative;
  overflow: hidden;
  background: var(--ink-3);
}

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

.page-contact .figure__caption {
  margin-top: 8px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--stone);
}

/* ---------- 信息清单纸面 ---------- */
.page-contact .paper-card {
  background: var(--paper);
  color: var(--ink);
  border: 1px solid #d6cebc;
  padding: clamp(18px, 2.4vw, 32px);
  box-shadow: 9px 9px 0 rgba(244, 241, 233, 0.13), 0 22px 44px rgba(4, 9, 20, 0.42);
}

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

.page-contact .checklist__item {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  padding: 15px 0;
  border-bottom: 1px dashed rgba(11, 20, 40, 0.2);
}

.page-contact .checklist__item:first-child {
  padding-top: 0;
}

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

.page-contact .checklist__num {
  font-size: 12px;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--clay);
  padding-top: 3px;
}

.page-contact .checklist__item h3 {
  margin: 0 0 5px;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.005em;
  color: var(--ink);
}

.page-contact .checklist__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: #3b4559;
}

.page-contact .checklist__tip {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 2px solid rgba(11, 20, 40, 0.14);
  font-size: 13px;
  line-height: 1.7;
  color: #4a5468;
}

/* ---------- 工单与邮箱 ---------- */
.page-contact .ticket__grid {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
}

.page-contact .ticket__body h2 {
  margin: 0 0 12px;
  font-size: clamp(24px, 3.6vw, 42px);
  font-weight: 900;
  letter-spacing: -0.015em;
  line-height: 1.15;
  color: var(--white);
}

.page-contact .ticket__body > p {
  margin: 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.8;
  color: #c2cbdb;
}

.page-contact .ticket__steps {
  list-style: none;
  margin: 18px 0 22px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .ticket__steps li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.75;
  color: #cfd6e3;
}

.page-contact .ticket__steps li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 8px;
  background: var(--gold);
  transform: rotate(45deg);
}

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

/* ---------- 合作与纠错 ---------- */
.page-contact .coop__rows {
  display: grid;
  gap: 1px;
  background: var(--pc-line);
  border: 1px solid var(--pc-line);
}

.page-contact .coop-row {
  background: var(--ink-2);
  padding: clamp(16px, 2.2vw, 26px);
}

.page-contact .coop-row h3 {
  margin: 0 0 9px;
  font-size: 17px;
  font-weight: 800;
  color: var(--white);
  padding-left: 12px;
  border-left: 4px solid var(--gold);
  line-height: 1.3;
}

.page-contact .coop-row p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.78;
  color: #c2cbdb;
}

.page-contact .coop-row__meta {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

/* ---------- 响应时间 ---------- */
.page-contact .response__rows {
  border-top: 1px solid var(--pc-line);
}

.page-contact .response-row {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .response__k {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-contact .response__v {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: #c2cbdb;
}

.page-contact .response__closing {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--stone);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .response-row {
    grid-template-columns: 190px 1fr;
    align-items: baseline;
    gap: 24px;
  }

  .page-contact .checklist__item {
    grid-template-columns: 44px 1fr;
    gap: 16px;
  }
}

@media (min-width: 900px) {
  .page-contact .channels {
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: auto auto;
    align-items: start;
    gap: 16px;
  }

  .page-contact .channel--1 { min-height: 272px; }
  .page-contact .channel--2 { min-height: 228px; }
  .page-contact .channel--3 { min-height: 186px; }

  .page-contact .channel-figure {
    grid-column: 2 / 4;
    grid-row: 2;
  }

  .page-contact .ticket__grid {
    grid-template-columns: 5fr 6fr;
    align-items: center;
  }

  .page-contact .coop__rows {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1100px) {
  .page-contact .contact-hero {
    grid-template-columns: 1fr;
  }
}
</final_tag>