.page-contact {
  --pc-panel: rgba(19, 27, 54, 0.66);
  --pc-radius-lg: 28px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  max-width: 920px;
  padding: 12px 0 44px;
}

.page-contact .contact-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(1.85rem, 6.2vw, 3.35rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--mist);
  margin: 14px 0 20px;
}

.page-contact .contact-hero .lede {
  color: var(--slate);
  max-width: 62ch;
}

.page-contact .contact-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.page-contact .contact-hero__meta > span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 15px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  font-size: 13px;
  line-height: 1.4;
  color: var(--slate);
}

.page-contact .contact-hero__meta > span::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  flex: none;
}

/* ---------- 通道 / 留言 分屏 ---------- */
.page-contact .contact-split__inner {
  display: grid;
  gap: 36px;
}

.page-contact .contact-curve {
  display: none;
}

.page-contact .contact-channels h2,
.page-contact .contact-message h2 {
  font-family: var(--font-head);
  font-size: clamp(1.45rem, 4.4vw, 2rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--mist);
  margin: 0 0 10px;
}

.page-contact .contact-channels__note {
  margin: 0 0 24px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--slate);
}

.page-contact .channel-card {
  position: relative;
  padding: 24px 22px 22px;
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  background: var(--pc-panel);
  overflow: hidden;
  transition: border-color 0.24s ease, transform 0.24s ease;
}

.page-contact .channel-card + .channel-card {
  margin-top: 16px;
}

.page-contact .channel-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(43, 232, 198, 0.55), transparent);
  opacity: 0.55;
}

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

.page-contact .channel-card__coord {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .channel-card__title {
  font-family: var(--font-head);
  font-size: 1.25rem;
  letter-spacing: 0.01em;
  color: var(--mist);
  margin: 12px 0 6px;
}

.page-contact .channel-card__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(0.95rem, 3.6vw, 1.15rem);
  line-height: 1.5;
  color: var(--white);
  word-break: break-word;
  margin-bottom: 12px;
}

.page-contact .channel-card__desc {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--slate);
}

.page-contact .channel-card__sla {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(89, 217, 127, 0.34);
  background: rgba(89, 217, 127, 0.08);
  color: var(--grass);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
}

/* 留言面板 */
.page-contact .contact-message {
  padding: 26px 22px 28px;
  border: 1px solid var(--line-soft);
  border-radius: var(--pc-radius-lg);
  background:
    radial-gradient(120% 80% at 100% 0%, rgba(43, 232, 198, 0.09), transparent 62%),
    var(--pc-panel);
}

.page-contact .contact-message__intro {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--slate);
}

.page-contact .contact-message__media {
  margin: 0 0 24px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-card);
  overflow: hidden;
}

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

.page-contact .message-steps {
  counter-reset: step;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .message-steps li {
  counter-increment: step;
  position: relative;
  padding-left: 40px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--slate);
}

.page-contact .message-steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--cyan-soft);
  border: 1px solid rgba(43, 232, 198, 0.45);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.02em;
}

.page-contact .contact-message__foot {
  margin: 22px 0 0;
  padding-top: 18px;
  border-top: 1px dashed var(--line-dash);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 章节头 ---------- */
.page-contact .contact-section-head {
  max-width: 660px;
  margin-bottom: 34px;
}

.page-contact .contact-section-head h2 {
  font-family: var(--font-head);
  font-size: clamp(1.55rem, 4.6vw, 2.35rem);
  line-height: 1.16;
  letter-spacing: -0.015em;
  color: var(--mist);
  margin: 12px 0 14px;
}

.page-contact .contact-section-head p {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 可展开的响应清单 ---------- */
.page-contact .response-list {
  border-top: 1px solid var(--line-soft);
}

.page-contact .response-item {
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .response-item__trigger {
  width: 100%;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  gap: 8px 16px;
  align-items: center;
  padding: 20px 2px;
  border: 0;
  background: none;
  text-align: left;
  cursor: pointer;
  font: inherit;
  color: var(--mist);
  transition: color 0.2s ease;
}

.page-contact .response-item__trigger:hover .response-item__label,
.page-contact .response-item__trigger[aria-expanded="true"] .response-item__label {
  color: var(--cyan);
}

.page-contact .response-item__no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-contact .response-item__label {
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.5;
  transition: color 0.2s ease;
}

.page-contact .response-item__hint {
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--slate);
  white-space: nowrap;
}

.page-contact .response-item__panel {
  padding: 0 2px 24px 58px;
}

.page-contact .response-item__panel p {
  margin: 0;
  max-width: 68ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--slate);
}

/* ---------- 响应节奏 ---------- */
.page-contact .cadence-bar {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-contact .cadence-item {
  padding: 20px 20px 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-card);
  background: rgba(29, 41, 80, 0.3);
  transition: border-color 0.22s ease, background 0.22s ease;
}

.page-contact .cadence-item:hover {
  border-color: rgba(43, 232, 198, 0.5);
  background: rgba(29, 41, 80, 0.5);
}

.page-contact .cadence-item__figure {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin: 0 0 8px;
  color: var(--white);
}

.page-contact .cadence-item__figure .num {
  font-family: var(--font-mono);
  font-size: 2.4rem;
  line-height: 1;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-contact .cadence-item__unit {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-contact .cadence-item__label {
  margin: 0 0 6px;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--mist);
}

.page-contact .cadence-item__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 数据服务基地 ---------- */
.page-contact .contact-base__inner {
  display: grid;
  gap: 32px;
}

.page-contact .contact-base__text h2 {
  font-family: var(--font-head);
  font-size: clamp(1.55rem, 4.6vw, 2.35rem);
  line-height: 1.16;
  letter-spacing: -0.015em;
  color: var(--mist);
  margin: 12px 0 16px;
}

.page-contact .contact-base__text p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--slate);
  max-width: 68ch;
}

.page-contact .contact-base__text strong {
  color: var(--mist);
  font-weight: 600;
}

.page-contact .contact-base__text a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 232, 198, 0.4);
  transition: border-color 0.2s ease;
}

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

.page-contact .contact-base__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  align-content: start;
}

.page-contact .base-fact {
  padding: 18px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  background: rgba(29, 41, 80, 0.34);
  text-align: center;
}

.page-contact .base-fact__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 2rem;
  line-height: 1;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--white);
  margin-bottom: 8px;
}

.page-contact .base-fact__label {
  display: block;
  font-size: 13px;
  line-height: 1.5;
  color: var(--slate);
}

.page-contact .contact-base__strip {
  position: relative;
  margin: 40px 0 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--pc-radius-lg);
  overflow: hidden;
  background: var(--ink-800);
}

.page-contact .contact-base__strip img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  max-height: 340px;
  object-fit: cover;
}

.page-contact .contact-base__strip .media__caption {
  padding: 12px 20px 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--slate);
  border-top: 1px dashed var(--line-dash);
}

/* ---------- 站内去向 ---------- */
.page-contact .contact-next h2 {
  font-family: var(--font-head);
  font-size: clamp(1.4rem, 4.2vw, 2rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--mist);
  margin: 0;
}

.page-contact .next-links {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .next-links li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-card);
  background: rgba(29, 41, 80, 0.3);
  transition: border-color 0.22s ease;
}

.page-contact .next-links li:hover {
  border-color: rgba(43, 232, 198, 0.5);
}

.page-contact .next-links a {
  font-size: 16.5px;
  font-weight: 600;
  color: var(--cyan);
  text-decoration: none;
}

.page-contact .next-links span {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 720px) {
  .page-contact .cadence-bar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-contact .next-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 18px;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-hero {
    padding: 20px 0 56px;
  }

  .page-contact .contact-split__inner {
    grid-template-columns: minmax(0, 1fr) 56px minmax(0, 1fr);
    gap: 0 28px;
    align-items: stretch;
  }

  .page-contact .contact-curve {
    display: block;
    grid-column: 2;
    width: 100%;
    height: 100%;
    align-self: stretch;
  }

  .page-contact .contact-base__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 56px;
    align-items: start;
  }

  .page-contact .cadence-bar {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }

  .page-contact .cadence-item {
    border: 0;
    border-left: 1px solid var(--line-soft);
    border-radius: 0;
    background: none;
    padding: 4px 22px 4px 24px;
  }

  .page-contact .cadence-item:first-child {
    border-left: 0;
    padding-left: 0;
  }

  .page-contact .cadence-item:last-child {
    padding-right: 0;
  }

  .page-contact .cadence-item:hover {
    background: none;
  }
}

/* ---------- 窄屏收口 ---------- */
@media (max-width: 599px) {
  .page-contact .contact-hero__meta > span {
    font-size: 12.5px;
    padding: 7px 13px;
  }

  .page-contact .response-item__trigger {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 6px 12px;
    align-items: start;
  }

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

  .page-contact .response-item__panel {
    padding: 0 2px 22px 0;
  }

  .page-contact .contact-base__facts {
    grid-template-columns: 1fr;
  }

  .page-contact .base-fact {
    display: flex;
    align-items: baseline;
    gap: 12px;
    text-align: left;
  }

  .page-contact .base-fact__num {
    margin-bottom: 0;
    min-width: 54px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .cadence-item,
  .page-contact .next-links li,
  .page-contact .response-item__label,
  .page-contact .contact-base__text a {
    transition: none;
  }

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