.page-contact {
  --contact-gap: clamp(18px, 3vw, 28px);
  --contact-block-gap: clamp(36px, 5vw, 68px);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  padding-block: clamp(20px, 3vw, 34px) clamp(30px, 5vw, 56px);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(58% 52% at 88% -6%, rgba(45, 226, 230, 0.15), transparent 72%),
    radial-gradient(52% 46% at 4% 96%, rgba(255, 107, 74, 0.12), transparent 72%);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: var(--contact-gap);
  margin-top: clamp(18px, 3vw, 28px);
}

.page-contact .contact-hero__lead .eyebrow {
  margin: 0 0 12px;
}

.page-contact h1 {
  margin: 0 0 16px;
  font-family: var(--sans);
  font-weight: 900;
  font-size: clamp(1.8rem, 5vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .contact-hero__lead .lede {
  margin: 0;
  color: var(--slate);
  line-height: 1.75;
}

/* 大号邮箱卡 */
.page-contact .contact-mail-block {
  margin-top: clamp(22px, 3vw, 34px);
  padding: clamp(20px, 2.6vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: linear-gradient(155deg, rgba(18, 48, 74, 0.96) 0%, rgba(11, 30, 51, 0.94) 62%, rgba(6, 17, 31, 0.96) 100%);
  box-shadow: var(--stack-shadow);
}

.page-contact .contact-mail-block__label {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-contact .contact-mail-block__value {
  margin: 0;
  font-family: var(--mono);
  font-weight: 700;
  font-size: clamp(1rem, 2.7vw, 1.75rem);
  line-height: 1.25;
  color: var(--cyan);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .contact-mail-block__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

/* 渠道标签卡 */
.page-contact .contact-hero__aside {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-contact .channel-card {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius-m);
  background: rgba(11, 30, 51, 0.72);
}

.page-contact .channel-card--coral {
  border-left-color: var(--coral);
}

.page-contact .channel-card--mint {
  border-left-color: var(--mint);
}

.page-contact .channel-card__label {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-contact .channel-card__value {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .channel-card__value--mono {
  font-family: var(--mono);
  color: var(--cyan);
}

.page-contact .channel-card--coral .channel-card__value--mono {
  color: var(--coral);
}

.page-contact .channel-card__note {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.65;
  color: var(--slate);
}

.page-contact .channel-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

/* ---------- 正文双栏 ---------- */
.page-contact .contact-body {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-contact .contact-body__side .toc {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: rgba(11, 30, 51, 0.6);
}

.page-contact .contact-body__side .toc__title {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-contact .contact-body__side .toc__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
}

.page-contact .contact-body__side .toc__list li {
  flex: 0 0 auto;
}

.page-contact .contact-body__side .toc__list a {
  display: block;
  padding: 6px 10px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  white-space: nowrap;
  text-decoration: none;
  color: var(--slate);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .contact-body__side .toc__list a:hover {
  color: var(--cyan);
  border-color: var(--line);
}

.page-contact .contact-body__side .toc__list a[aria-current="true"] {
  background: var(--cyan);
  color: var(--ink);
  font-weight: 600;
}

/* ---------- 章节通用 ---------- */
.page-contact .contact-block + .contact-block {
  margin-top: var(--contact-block-gap);
}

.page-contact .contact-block__head {
  margin-bottom: clamp(16px, 2.4vw, 22px);
}

.page-contact .contact-block__index {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--coral);
}

.page-contact .contact-block h2 {
  margin: 0 0 10px;
  font-size: clamp(1.35rem, 3.2vw, 2.05rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .contact-block__sub {
  margin: 0;
  max-width: 62ch;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--slate);
}

.page-contact .contact-block__foot {
  margin: 18px 0 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--slate);
}

.page-contact .inline-link {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-color: rgba(45, 226, 230, 0.42);
  text-underline-offset: 3px;
}

.page-contact .inline-link:hover {
  text-decoration-color: var(--cyan);
}

/* ---------- 邮件模板：纸张叠层 ---------- */
.page-contact .mail-kit {
  position: relative;
  isolation: isolate;
}

.page-contact .mail-kit::before {
  content: "";
  position: absolute;
  inset: 12px 10px -12px -10px;
  z-index: -1;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: rgba(18, 48, 74, 0.5);
}

.page-contact .mail-kit__sheet {
  position: relative;
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: linear-gradient(180deg, rgba(18, 48, 74, 0.97), rgba(11, 30, 51, 0.97));
  box-shadow: var(--stack-shadow);
}

.page-contact .mail-kit__subject {
  margin: 0 0 14px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line);
  font-family: var(--mono);
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--cyan);
  overflow-wrap: anywhere;
}

.page-contact .mail-kit__body {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.84rem;
  line-height: 1.95;
  color: var(--paper);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.page-contact .mail-kit__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 18px;
}

.page-contact .mail-kit__hint {
  margin: 0;
  flex: 1 1 220px;
  min-width: 0;
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--slate);
}

/* ---------- 工作时段 ---------- */
.page-contact .hours-grid {
  display: grid;
  gap: var(--contact-gap);
  align-items: start;
}

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

.page-contact .hours-list li {
  display: grid;
  gap: 5px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: rgba(11, 30, 51, 0.62);
}

.page-contact .hours-list__key {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-contact .hours-list li:nth-child(3) .hours-list__key {
  color: var(--cyan);
}

.page-contact .hours-list li:nth-child(4) .hours-list__key {
  color: var(--mint);
}

.page-contact .hours-list__val {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--paper);
}

/* ---------- 图片容器 ---------- */
.page-contact .contact-figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: var(--card);
  box-shadow: var(--deep-shadow);
}

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

.page-contact .contact-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-size: 0.78rem;
  line-height: 1.65;
  color: var(--slate);
}

/* ---------- 合作与纠错 ---------- */
.page-contact .partner-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}

.page-contact .partner-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: linear-gradient(180deg, rgba(18, 48, 74, 0.86), rgba(11, 30, 51, 0.82));
}

.page-contact .partner-card .tag {
  align-self: flex-start;
}

.page-contact .partner-card h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-contact .partner-card__line {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .partner-card__k {
  display: block;
  margin-bottom: 2px;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--slate);
}

/* ---------- 地址与属地 ---------- */
.page-contact .visit-grid {
  display: grid;
  gap: var(--contact-gap);
  align-items: start;
}

.page-contact .visit-card {
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: linear-gradient(170deg, rgba(18, 48, 74, 0.92), rgba(6, 17, 31, 0.92));
}

.page-contact .visit-list {
  display: grid;
  gap: 12px;
  margin: 0;
}

.page-contact .visit-list > div {
  display: grid;
  gap: 3px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line);
}

.page-contact .visit-list > div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .visit-list dt {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-contact .visit-list dd {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .visit-list dd.mono {
  font-family: var(--mono);
  color: var(--cyan);
}

.page-contact .visit-note {
  margin: 16px 0 0;
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-contact .partner-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-contact .hours-grid,
  .page-contact .visit-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(24px, 3.5vw, 44px);
  }
}

@media (min-width: 960px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: clamp(28px, 4vw, 60px);
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-contact .contact-body {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
    align-items: start;
  }

  .page-contact .contact-body__side {
    position: sticky;
    top: 92px;
  }

  .page-contact .contact-body__side .toc__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
  }

  .page-contact .contact-body__side .toc__list a {
    white-space: normal;
    border-radius: var(--radius-s);
    border-left: 2px solid transparent;
  }

  .page-contact .contact-body__side .toc__list a[aria-current="true"] {
    background: rgba(45, 226, 230, 0.14);
    color: var(--cyan);
    border-left-color: var(--cyan);
  }
}