.page-contact {
  --contact-gap: clamp(24px, 3.2vw, 56px);
  --contact-line: 1px solid var(--line-600);
}

.page-contact [id] {
  scroll-margin-top: 88px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding-top: clamp(24px, 3.4vw, 44px);
  padding-bottom: clamp(30px, 4vw, 60px);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(26px, 3.4vw, 52px);
  align-items: center;
}

.page-contact .contact-hero__text h1 {
  margin: 10px 0 0;
}

.page-contact .contact-hero__text .lede {
  margin-top: 18px;
}

.page-contact .contact-hero__quick {
  list-style: none;
  margin: clamp(22px, 2.6vw, 34px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
}

.page-contact .contact-hero__quick a {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--text-400);
  text-decoration: none;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--line-600);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .contact-hero__quick a::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--gold-500);
  transform: rotate(45deg);
  flex: none;
}

.page-contact .contact-hero__quick a:hover,
.page-contact .contact-hero__quick a:focus-visible {
  color: var(--gold-300);
  border-color: var(--gold-500);
}

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

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

/* ---------- 主体左右分栏 ---------- */
.page-contact .contact-layout {
  display: grid;
  gap: var(--contact-gap);
  margin-top: clamp(28px, 3.4vw, 46px);
}

.page-contact .contact-stack {
  display: grid;
  gap: 16px;
}

.page-contact .contact-card {
  position: relative;
  background: var(--glass);
  border: 1px solid var(--line-600);
  border-left: 2px solid var(--gold-500);
  border-radius: 4px;
  padding: clamp(18px, 2.2vw, 26px);
  backdrop-filter: blur(8px);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-contact .contact-card:hover {
  border-color: var(--gold-500);
  transform: translateY(-2px);
}

.page-contact .contact-card__value {
  margin: 14px 0 10px;
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.55;
  letter-spacing: 0.01em;
  color: var(--text-100);
  overflow-wrap: anywhere;
}

.page-contact .contact-card__value--addr {
  font-family: var(--font-body);
  letter-spacing: 0.02em;
  overflow-wrap: normal;
}

.page-contact .contact-card__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-400);
}

/* ---------- 合作洽谈 ---------- */
.page-contact .contact-side .section__head {
  margin-bottom: 0;
}

.page-contact .talk-seg {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(22px, 2.6vw, 30px) 0 18px;
}

.page-contact .talk-seg .segmented__btn {
  appearance: none;
  border: 1px solid var(--line-600);
  background: var(--ink-700);
  color: var(--text-400);
  font-family: var(--font-body);
  font-size: 14px;
  letter-spacing: 0.04em;
  padding: 9px 16px;
  border-radius: 999px;
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}

.page-contact .talk-seg .segmented__btn:hover {
  border-color: var(--gold-500);
  color: var(--gold-300);
}

.page-contact .talk-seg .segmented__btn[aria-pressed="true"] {
  background: rgba(216, 169, 79, 0.16);
  border-color: var(--gold-500);
  color: var(--gold-300);
}

.page-contact .talk-panel {
  display: none;
  background: var(--ink-900);
  border: 1px solid var(--line-600);
  border-top: 2px solid var(--gold-500);
  border-radius: 4px;
  padding: clamp(20px, 2.4vw, 30px);
}

.page-contact .talk-panel[data-active] {
  display: block;
}

.page-contact .talk-panel__title {
  margin: 0;
  font-size: clamp(20px, 2.2vw, 24px);
  letter-spacing: 0.01em;
}

.page-contact .talk-panel__hint {
  margin: 8px 0 20px;
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--jade-500);
}

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

.page-contact .talk-list li {
  position: relative;
  padding-left: 36px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-100);
}

.page-contact .talk-list li::before {
  counter-increment: talk;
  content: counter(talk, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--gold-500);
}

/* ---------- 反馈说明 ---------- */
.page-contact .feedback-steps {
  list-style: none;
  margin: clamp(26px, 3vw, 40px) 0 0;
  padding: 0;
  border-top: var(--contact-line);
}

.page-contact .feedback-step {
  display: grid;
  gap: 8px;
  padding: 22px 0;
  border-bottom: var(--contact-line);
}

.page-contact .feedback-step__no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--gold-500);
}

.page-contact .feedback-step h3 {
  margin: 0;
  font-size: 19px;
}

.page-contact .feedback-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-400);
  max-width: 46em;
}

.page-contact .feedback-step p a {
  color: var(--gold-300);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

/* ---------- 事项分流 ---------- */
.page-contact .routing-list {
  list-style: none;
  margin: clamp(26px, 3vw, 38px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .routing-item {
  display: grid;
  gap: 8px;
  padding: 22px 20px;
  background: var(--glass);
  border: 1px solid var(--line-600);
  border-radius: 4px;
  backdrop-filter: blur(6px);
}

.page-contact .routing-item__what {
  margin: 0;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-100);
}

.page-contact .routing-item__where {
  margin: 0;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--jade-500);
}

.page-contact .routing-item__where a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

.page-contact .routing-item__why {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-400);
}

/* ---------- 来信地址与备案 ---------- */
.page-contact .registry-grid {
  display: grid;
  gap: clamp(24px, 3vw, 46px);
  align-items: center;
}

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

.page-contact .registry-list {
  margin: 22px 0 0;
  display: grid;
}

.page-contact .registry-list > div {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: var(--contact-line);
}

.page-contact .registry-list > div:first-child {
  border-top: var(--contact-line);
}

.page-contact .registry-list dt {
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--text-400);
}

.page-contact .registry-list dd {
  margin: 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-100);
  overflow-wrap: anywhere;
}

.page-contact .registry-list dd.num {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.page-contact .registry-body .prose {
  margin-top: 20px;
}

.page-contact .registry-body .prose a {
  color: var(--gold-300);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

/* ---------- 底部备案信息带 ---------- */
.page-contact .registry-band {
  margin-top: clamp(40px, 5vw, 76px);
  background: var(--ink-900);
  border-bottom: var(--contact-line);
}

.page-contact .registry-band::before {
  content: "";
  display: block;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-500), transparent);
  opacity: 0.55;
}

.page-contact .registry-band__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 30px;
  padding: 22px 0 24px;
}

.page-contact .registry-band__label {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--text-400);
}

.page-contact .registry-band__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.03em;
  color: var(--gold-300);
}

.page-contact .registry-band__meta {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-400);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .feedback-step {
    grid-template-columns: 62px 1fr;
    align-items: baseline;
    column-gap: 18px;
  }

  .page-contact .feedback-step__no {
    grid-row: span 2;
  }
}

@media (min-width: 760px) {
  .page-contact .registry-list > div {
    grid-template-columns: 104px 1fr;
    align-items: baseline;
    gap: 16px;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: 1.08fr 0.92fr;
  }

  .page-contact .contact-layout {
    grid-template-columns: 0.82fr 1.18fr;
    align-items: start;
  }

  .page-contact .contact-stack {
    position: sticky;
    top: 32px;
  }

  .page-contact .registry-grid {
    grid-template-columns: 1.05fr 0.95fr;
  }

  .page-contact .routing-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .page-contact .feedback-step {
    grid-template-columns: 62px minmax(180px, 240px) 1fr;
  }

  .page-contact .feedback-step__no {
    grid-row: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-card,
  .page-contact .talk-seg .segmented__btn,
  .page-contact .contact-hero__quick a {
    transition: none;
  }

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