.page-contact {
  --pc-ink-veil: rgba(246, 241, 231, .58);
  --pc-ink-veil-soft: rgba(246, 241, 231, .42);
  padding-bottom: 0;
}

/* ---------- 面包屑 ---------- */
.page-contact .contact-breadcrumb {
  padding-top: clamp(96px, 13vw, 148px);
}

.page-contact .contact-breadcrumb .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--muted);
}

.page-contact .contact-breadcrumb .breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--line-strong);
}

.page-contact .contact-breadcrumb .breadcrumb a {
  color: var(--winter-deep);
  text-decoration: none;
  font-weight: 600;
}

.page-contact .contact-breadcrumb .breadcrumb a:hover {
  text-decoration: underline;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding-top: clamp(20px, 3vw, 36px);
}

.page-contact .hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
  align-items: center;
}

.page-contact .hero-copy h1 {
  margin: 10px 0 0;
  font-size: clamp(2.1rem, 6vw, 3.8rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.028em;
  color: var(--ink);
  text-wrap: balance;
}

.page-contact .hero-lede {
  margin: 20px 0 0;
  max-width: 40ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-contact .hero-notes {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.page-contact .hero-figure {
  display: none;
}

.page-contact .hero-figure svg {
  display: block;
  width: 100%;
  max-width: 400px;
  height: auto;
  margin-inline: auto;
}

@media (min-width: 900px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, .65fr);
  }

  .page-contact .hero-figure {
    display: block;
  }
}

/* ---------- 双栏画布 ---------- */
.page-contact .contact-canvas {
  padding-top: clamp(44px, 6vw, 76px);
}

.page-contact .contact-cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
}

@media (min-width: 1000px) {
  .page-contact .contact-cols {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  }

  .page-contact .contact-card {
    position: sticky;
    top: 104px;
  }
}

/* ---------- 左侧联系卡 ---------- */
.page-contact .contact-card {
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lift);
}

.page-contact .contact-card-media {
  margin: 0;
  border-radius: 0;
}

.page-contact .contact-card-media .media__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-contact .contact-card-body {
  padding: clamp(22px, 3vw, 32px);
}

.page-contact .contact-card-title {
  margin: 0 0 20px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .18em;
  color: var(--pc-ink-veil);
}

.page-contact .contact-card .contact-item {
  display: block;
  padding: 16px 0;
  border-top: 1px solid var(--line-invert);
}

.page-contact .contact-card .contact-item:first-of-type {
  padding-top: 0;
  border-top: 0;
}

.page-contact .contact-card .contact-label {
  display: block;
  margin-bottom: 7px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--pc-ink-veil-soft);
}

.page-contact .contact-card .contact-value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.2rem, 3.4vw, 1.55rem);
  font-weight: 600;
  line-height: 1.3;
  color: var(--white);
  letter-spacing: -0.012em;
  word-break: break-word;
}

.page-contact .contact-card .contact-value--mail {
  font-size: clamp(.92rem, 2.3vw, 1.08rem);
  line-height: 1.5;
}

.page-contact .contact-card .contact-value--addr {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.72;
  color: rgba(246, 241, 231, .9);
}

.page-contact .contact-note {
  margin: 20px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line-invert);
  font-size: 13px;
  line-height: 1.78;
  color: var(--pc-ink-veil);
}

/* ---------- 右侧内容流 ---------- */
.page-contact .contact-stream {
  display: flex;
  flex-direction: column;
  gap: clamp(32px, 4.6vw, 54px);
  min-width: 0;
}

.page-contact .stream-block {
  padding-bottom: clamp(28px, 4vw, 44px);
  border-bottom: 1px solid var(--line);
}

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

.page-contact .stream-title {
  margin: 8px 0 14px;
  font-size: clamp(1.35rem, 3.2vw, 1.95rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.024em;
  color: var(--ink);
  text-wrap: balance;
}

.page-contact .stream-text {
  margin: 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-contact .quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-contact .quick-links .btn {
  text-decoration: none;
}

/* 渠道列表 */
.page-contact .channel-list {
  display: grid;
  gap: 3px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .channel-item {
  display: grid;
  grid-template-columns: 10px minmax(0, 1fr);
  gap: 16px;
  padding: 20px 22px;
  background: var(--paper-2);
  border-radius: var(--r-md);
}

.page-contact .channel-dot {
  width: 10px;
  height: 10px;
  margin-top: 8px;
  border-radius: 50%;
  flex: none;
}

.page-contact .channel-dot--alert { background: var(--alert); }
.page-contact .channel-dot--winter { background: var(--winter); }
.page-contact .channel-dot--summer { background: var(--summer); }

.page-contact .channel-name {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.page-contact .channel-desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--muted);
  word-break: break-word;
}

/* 清单 */
.page-contact .checklist {
  display: grid;
  gap: 0;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: chk;
}

.page-contact .check-item {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 16px;
  padding: 17px 0;
  border-top: 1px solid var(--line);
}

.page-contact .check-item:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-contact .check-num {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: var(--paper);
  font-size: 12px;
  font-weight: 600;
  color: var(--ink);
}

.page-contact .check-num::before {
  counter-increment: chk;
  content: counter(chk, decimal-leading-zero);
}

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

.page-contact .check-text strong {
  font-weight: 700;
  color: var(--ink);
}

/* 合作筛选 */
.page-contact .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 0;
}

.page-contact .filter-btn {
  appearance: none;
  padding: 9px 17px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-pill);
  background: transparent;
  color: var(--ink);
  font-family: inherit;
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  transition: background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-contact .filter-btn:hover {
  border-color: var(--ink);
}

.page-contact .filter-btn[aria-pressed="true"] {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

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

@media (min-width: 720px) {
  .page-contact .partner-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-contact .partner-item {
  padding: 20px 22px;
  background: var(--paper-2);
  border-left: 4px solid var(--line-strong);
  border-radius: 0 var(--r-md) var(--r-md) 0;
}

.page-contact .partner-item[data-tags~="assoc"] { border-left-color: var(--spring); }
.page-contact .partner-item[data-tags~="campus"] { border-left-color: var(--autumn); }
.page-contact .partner-item[data-tags~="media"] { border-left-color: var(--winter); }
.page-contact .partner-item[data-tags~="content"] { border-left-color: var(--summer); }

.page-contact .partner-item h3 {
  margin: 0 0 7px;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}

.page-contact .partner-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.74;
  color: var(--muted);
}

.page-contact .filter-item.is-hidden,
.page-contact .filter-item[hidden] {
  display: none;
}

/* ---------- 底部信息带 ---------- */
.page-contact .contact-region {
  margin-top: clamp(52px, 8vw, 96px);
  padding: clamp(36px, 6vw, 68px) 0;
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--r-xl) var(--r-xl) 0 0;
}

.page-contact .region-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  align-items: center;
}

@media (min-width: 880px) {
  .page-contact .region-inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  }
}

.page-contact .region-title {
  margin: 0 0 12px;
  font-size: clamp(1.3rem, 3.2vw, 1.8rem);
  font-weight: 800;
  letter-spacing: -0.024em;
  line-height: 1.2;
  color: var(--white);
}

.page-contact .region-text {
  margin: 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(246, 241, 231, .74);
}

.page-contact .region-facts {
  display: grid;
  gap: 14px;
  margin: 26px 0 0;
  padding: 0;
}

.page-contact .region-fact {
  padding-top: 13px;
  border-top: 1px solid var(--line-invert);
}

.page-contact .region-fact dt {
  margin-bottom: 5px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--pc-ink-veil-soft);
}

.page-contact .region-fact dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--white);
  word-break: break-word;
}

.page-contact .region-media {
  margin: 0;
  border-radius: var(--r-lg);
}

.page-contact .region-media .media__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 3;
  object-fit: cover;
}

/* ---------- 响应式细节 ---------- */
@media (max-width: 480px) {
  .page-contact .contact-card .contact-value {
    font-size: 1.12rem;
  }

  .page-contact .channel-item,
  .page-contact .partner-item {
    padding: 17px 16px;
  }

  .page-contact .filter-btn {
    padding: 8px 14px;
    font-size: 13px;
  }
}

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