.page-contact {
  --contact-panel: #0B1A28;
  --contact-ink-line: rgba(7, 20, 33, 0.16);
  --contact-ink-soft: #3F5A6E;
  display: block;
}

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

/* 首屏 */
.page-contact .contact-hero {
  background:
    radial-gradient(120% 90% at 88% 8%, rgba(242, 184, 75, 0.14) 0%, rgba(7, 20, 33, 0) 58%),
    linear-gradient(168deg, var(--ink-900) 0%, var(--ink-950) 100%);
  border-top: 1px solid var(--line-strong);
  padding-block: clamp(20px, 3.4vw, 34px) clamp(34px, 5vw, 68px);
}

.page-contact .hero-grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
  margin-top: clamp(22px, 3.6vw, 40px);
}

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

.page-contact .hero-kicker {
  margin: 0 0 18px;
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  color: var(--gold);
  border-left: 3px solid var(--gold);
  padding-left: 12px;
}

.page-contact .hero-lead h1 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(2.2rem, 6.4vw, 4.4rem);
  line-height: 1.08;
  letter-spacing: 0.04em;
  color: var(--paper);
  max-width: 15ch;
}

.page-contact .hero-text {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  max-width: 46ch;
  font-size: clamp(0.98rem, 1.5vw, 1.09rem);
  line-height: 1.8;
  color: var(--frost);
}

.page-contact .hero-marks {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .hero-marks li {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--mist);
}

.page-contact .hero-marks .num {
  color: var(--gold);
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  flex: none;
}

.page-contact .hero-figure {
  margin: 0;
  padding: 10px 10px 14px;
  border: 1px solid var(--line-strong);
  background: linear-gradient(155deg, rgba(169, 193, 212, 0.08), rgba(7, 20, 33, 0.4));
}

.page-contact .hero-figure figcaption,
.page-contact .mail-figure figcaption {
  margin-top: 10px;
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--steel);
  letter-spacing: 0.02em;
}

/* 坐标卡 */
.page-contact .coord-card {
  margin-top: clamp(28px, 4vw, 46px);
  display: grid;
  background: var(--mist);
  border: 1px solid var(--line-strong);
  border-top: 3px solid var(--gold);
  box-shadow: 0 26px 60px -40px rgba(0, 0, 0, 0.9);
}

@media (min-width: 860px) {
  .page-contact .coord-card {
    grid-template-columns: repeat(3, 1fr);
  }
}

.page-contact .coord-cell {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(18px, 2.6vw, 30px);
  position: relative;
}

.page-contact .coord-cell + .coord-cell {
  border-top: 1px solid var(--contact-ink-line);
}

@media (min-width: 860px) {
  .page-contact .coord-cell + .coord-cell {
    border-top: 0;
    border-left: 1px solid var(--contact-ink-line);
  }
}

.page-contact .coord-idx {
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-contact .coord-label {
  font-size: 0.76rem;
  letter-spacing: 0.2em;
  color: var(--contact-ink-soft);
}

.page-contact .coord-value {
  color: var(--ink-900);
  font-weight: 700;
  line-height: 1.35;
}

.page-contact .coord-value--tel {
  font-family: var(--font-num);
  font-size: clamp(1.9rem, 5.2vw, 2.5rem);
  letter-spacing: 0.04em;
}

.page-contact .coord-value--mail {
  font-size: clamp(1rem, 2.4vw, 1.16rem);
  letter-spacing: 0.01em;
  overflow-wrap: anywhere;
  border-bottom: 2px solid var(--line-strong);
  padding-bottom: 6px;
}

.page-contact .coord-value--addr {
  font-size: clamp(0.96rem, 2.1vw, 1.06rem);
  letter-spacing: 0.01em;
  font-weight: 600;
}

.page-contact .coord-note {
  font-size: 0.79rem;
  line-height: 1.7;
  color: var(--contact-ink-soft);
}

/* 页内索引条 */
.page-contact .jump-nav {
  background: var(--ink-1000);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line-strong);
}

.page-contact .jump-list {
  list-style: none;
  display: flex;
  gap: clamp(6px, 1.6vw, 20px);
  margin: 0;
  padding: 12px 0;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-contact .jump-list li {
  flex: none;
}

.page-contact .jump-list a {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 6px 10px;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--frost);
  text-decoration: none;
  border: 1px solid transparent;
  border-bottom: 2px solid var(--line);
  white-space: nowrap;
}

.page-contact .jump-list a:hover,
.page-contact .jump-list a:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
  outline: none;
}

.page-contact .jump-list .num {
  color: var(--magenta);
  font-size: 0.78rem;
}

/* 区段通用 */
.page-contact .band-head {
  max-width: 62ch;
  margin-bottom: clamp(24px, 3.6vw, 40px);
}

.page-contact .band-kicker {
  margin: 0 0 12px;
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  color: var(--amber);
}

.page-contact .band-head h2,
.page-contact .mail-copy h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.4vw, 2.3rem);
  line-height: 1.24;
  letter-spacing: 0.05em;
  color: var(--ink-900);
}

.page-contact .band-intro {
  margin: 14px 0 0;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--contact-ink-soft);
}

/* 合作方向 */
.page-contact .coop-band {
  background: var(--paper);
}

.page-contact .coop-list {
  border-top: 1px solid var(--line-strong);
}

.page-contact .coop-item {
  display: grid;
  gap: 12px;
  padding: clamp(18px, 2.8vw, 26px) 0;
  border-bottom: 1px solid var(--line-strong);
}

@media (min-width: 820px) {
  .page-contact .coop-item {
    grid-template-columns: 168px 1fr;
    gap: clamp(18px, 3vw, 40px);
    align-items: start;
  }
}

.page-contact .coop-tag {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-contact .coop-tag .num {
  font-size: 1.9rem;
  line-height: 1;
  color: var(--ink-900);
  letter-spacing: 0.04em;
  opacity: 0.28;
}

.page-contact .coop-detail {
  min-width: 0;
}

.page-contact .coop-detail summary {
  cursor: pointer;
  list-style: none;
  display: grid;
  gap: 8px;
  padding-right: 34px;
  position: relative;
}

.page-contact .coop-detail summary::-webkit-details-marker {
  display: none;
}

.page-contact .coop-detail summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 0;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  font-family: var(--font-num);
  font-size: 1.15rem;
  color: var(--amber);
  border: 1px solid var(--line-strong);
}

.page-contact .coop-detail[open] summary::after {
  content: "–";
  border-color: var(--gold-line);
  color: var(--gold);
}

.page-contact .coop-detail summary h3 {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(1.06rem, 2.2vw, 1.3rem);
  font-weight: 700;
  letter-spacing: 0.03em;
  line-height: 1.45;
  color: var(--ink-900);
}

.page-contact .coop-line {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--steel);
}

.page-contact .coop-facts {
  margin: 18px 0 0;
  padding: 0;
  border-left: 2px solid var(--gold-line);
  padding-left: clamp(14px, 2vw, 20px);
  display: grid;
  gap: 14px;
}

.page-contact .coop-facts div {
  display: grid;
  gap: 4px;
}

.page-contact .coop-facts dt {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--amber);
}

.page-contact .coop-facts dd {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--contact-ink-soft);
}

/* 邮件与到访 */
.page-contact .mail-band {
  background: linear-gradient(180deg, #E8F1F8 0%, var(--mist) 100%);
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.page-contact .mail-grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  align-items: start;
}

@media (min-width: 900px) {
  .page-contact .mail-grid {
    grid-template-columns: 1.05fr 0.95fr;
  }
}

.page-contact .mail-text {
  margin: 16px 0 0;
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--contact-ink-soft);
  max-width: 44ch;
}

.page-contact .mail-list {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
}

.page-contact .mail-list li {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--contact-ink-line);
}

.page-contact .mail-list .num {
  font-size: 1.6rem;
  line-height: 1;
  color: var(--amber);
  letter-spacing: 0.04em;
}

.page-contact .mail-list strong {
  display: block;
  font-size: 0.98rem;
  letter-spacing: 0.03em;
  color: var(--ink-900);
}

.page-contact .mail-list p {
  margin: 5px 0 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--contact-ink-soft);
}

.page-contact .mail-figure {
  margin: 0;
  padding: 10px 10px 14px;
  background: rgba(7, 20, 33, 0.06);
  border: 1px solid var(--line-strong);
}

/* 页脚短路径 */
.page-contact .short-band {
  background:
    linear-gradient(200deg, rgba(255, 61, 129, 0.1) 0%, rgba(7, 20, 33, 0) 42%),
    var(--ink-900);
  border-bottom: 1px solid var(--line-strong);
}

.page-contact .band-head--dark h2 {
  color: var(--paper);
}

.page-contact .band-head--dark .band-kicker {
  color: var(--magenta);
}

.page-contact .band-head--dark .band-intro {
  color: var(--frost);
}

.page-contact .path-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line-strong);
}

@media (min-width: 760px) {
  .page-contact .path-steps {
    grid-template-columns: repeat(3, 1fr);
  }
}

.page-contact .path-steps li {
  background: var(--contact-panel);
  padding: clamp(20px, 3vw, 30px);
  display: grid;
  gap: 8px;
  position: relative;
}

.page-contact .path-steps li::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 34%;
  height: 2px;
  background: var(--gold);
}

.page-contact .path-num {
  font-size: clamp(2.2rem, 5vw, 3rem);
  line-height: 1;
  color: var(--gold);
  letter-spacing: 0.04em;
}

.page-contact .path-steps h3 {
  margin: 0;
  font-family: var(--font-head);
  font-size: 1.04rem;
  letter-spacing: 0.05em;
  color: var(--paper);
}

.page-contact .path-steps p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--frost);
}

.page-contact .path-note {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  font-size: 0.82rem;
  line-height: 1.8;
  color: var(--steel);
  border-left: 2px solid var(--magenta-line);
  padding-left: 12px;
  max-width: 62ch;
}

/* 联系前先看 */
.page-contact .prep-band {
  background: var(--paper);
}

.page-contact .prep-grid {
  display: grid;
  gap: 1px;
  background: var(--line-strong);
  border: 1px solid var(--line-strong);
  grid-template-columns: 1fr;
}

@media (min-width: 680px) {
  .page-contact .prep-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1020px) {
  .page-contact .prep-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.page-contact .prep-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(20px, 2.6vw, 28px);
  background: var(--paper);
  text-decoration: none;
  color: inherit;
  border-left: 3px solid transparent;
  transition: background 180ms ease, border-left-color 180ms ease;
}

.page-contact .prep-card:hover,
.page-contact .prep-card:focus-visible {
  background: #FFFFFF;
  border-left-color: var(--gold);
  outline: none;
}

.page-contact .prep-idx {
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  color: var(--steel);
}

.page-contact .prep-card h3 {
  margin: 0;
  font-family: var(--font-head);
  font-size: 1.06rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--ink-900);
}

.page-contact .prep-card p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--contact-ink-soft);
  flex: 1;
}

.page-contact .prep-go {
  margin-top: 6px;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--amber);
  border-bottom: 1px solid var(--gold-line);
  align-self: flex-start;
  padding-bottom: 2px;
}

.page-contact .prep-card:hover .prep-go,
.page-contact .prep-card:focus-visible .prep-go {
  color: var(--magenta);
  border-bottom-color: var(--magenta-line);
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .prep-card {
    transition: none;
  }
}