.page-contact {
  --pc-head-gap: clamp(48px, 7vw, 84px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

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

.page-contact .breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: clamp(18px, 3vw, 28px);
  font-size: 0.85rem;
  color: var(--steel);
}

.page-contact .breadcrumbs a {
  color: var(--steel);
  text-decoration: none;
  transition: color var(--dur);
}

.page-contact .breadcrumbs a:hover {
  color: var(--gold);
}

.page-contact .crumb-sep {
  color: var(--coral);
}

/* 首屏 */
.page-contact .contact-hero {
  display: grid;
  gap: clamp(24px, 4vw, 42px);
  padding: clamp(24px, 5vw, 54px) 0 clamp(36px, 6vw, 64px);
}

.page-contact .contact-hero-copy {
  min-width: 0;
}

.page-contact .eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-contact h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 5.4vw, 3.35rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-contact .contact-lede {
  margin: 0 0 24px;
  max-width: 62ch;
  font-size: clamp(1rem, 1.2vw, 1.08rem);
  line-height: 1.85;
  color: rgba(247, 245, 240, 0.8);
}

.page-contact .contact-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-contact .quick-pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 10px 20px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--white);
  font-size: 0.94rem;
  text-decoration: none;
  transition: border-color var(--dur), transform var(--dur), background var(--dur);
}

.page-contact .quick-pill::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--coral);
  box-shadow: 0 0 0 3px rgba(255, 78, 66, 0.18);
}

.page-contact .quick-pill:nth-child(2)::before {
  background: var(--gold);
  box-shadow: 0 0 0 3px rgba(255, 176, 32, 0.18);
}

.page-contact .quick-pill:nth-child(3)::before {
  background: var(--teal);
  box-shadow: 0 0 0 3px rgba(43, 227, 180, 0.18);
}

.page-contact .quick-pill:hover {
  border-color: var(--coral);
  background: var(--panel-2);
  transform: translateY(-2px);
}

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

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

/* 主体两列结构 */
.page-contact .contact-shell {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
}

.page-contact .contact-flow {
  display: grid;
  gap: var(--pc-head-gap);
  min-width: 0;
}

.page-contact .contact-aside {
  order: -1;
  min-width: 0;
}

/* 章节头 */
.page-contact .contact-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 18px;
  align-items: baseline;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-contact .contact-head .section-num {
  grid-row: 1 / span 2;
  align-self: start;
}

.page-contact .contact-head .section-title {
  grid-column: 2;
  margin: 0;
}

.page-contact .contact-head .section-lede {
  grid-column: 2;
  margin: 0;
  color: rgba(247, 245, 240, 0.74);
}

/* 问题气泡 */
.page-contact .bubble-stack {
  display: grid;
  gap: 14px;
}

.page-contact .bubble {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--dur), background var(--dur);
}

.page-contact .bubble:hover {
  border-color: rgba(255, 78, 66, 0.5);
}

.page-contact .bubble[open] {
  background: var(--panel-2);
  border-color: rgba(255, 176, 32, 0.55);
}

.page-contact .bubble summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  cursor: pointer;
  list-style: none;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--white);
}

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

.page-contact .bubble summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  color: var(--coral);
  transition: transform var(--dur), color var(--dur);
}

.page-contact .bubble[open] summary::after {
  transform: rotate(45deg);
  color: var(--gold);
}

.page-contact .bubble-body {
  padding: 0 22px 22px;
}

.page-contact .bubble-body p {
  margin: 0 0 14px;
  font-size: 0.98rem;
  line-height: 1.8;
  color: rgba(247, 245, 240, 0.78);
}

.page-contact .bubble-body ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-contact .bubble-body li {
  position: relative;
  padding-left: 20px;
  font-size: 0.94rem;
  line-height: 1.7;
  color: var(--steel);
}

.page-contact .bubble-body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 9px;
  height: 2px;
  background: var(--teal);
}

.page-contact .issue-map {
  margin: clamp(22px, 3vw, 32px) 0 0;
}

.page-contact .issue-map figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--steel);
}

/* 稿纸式清单 */
.page-contact .notepad {
  padding: clamp(18px, 3vw, 30px) clamp(18px, 3.4vw, 38px);
  border: 1px solid var(--sand);
  border-radius: var(--radius-lg);
  background: var(--paper);
  color: var(--brown);
  box-shadow: 0 26px 48px -36px rgba(0, 0, 0, 0.95);
}

.page-contact .note-line {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 15px 0;
  border-bottom: 1px dashed rgba(42, 31, 25, 0.3);
}

.page-contact .note-line:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.page-contact .note-line:first-child {
  padding-top: 0;
}

.page-contact .note-key {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--stamp);
}

.page-contact .note-val {
  font-size: 0.98rem;
  line-height: 1.75;
  color: var(--brown);
}

/* 提交示例 */
.page-contact .sample {
  margin-top: clamp(20px, 3vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(255, 176, 32, 0.09), rgba(255, 78, 66, 0.07));
}

.page-contact .sample summary {
  padding: 16px 22px;
  cursor: pointer;
  list-style: none;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--gold);
}

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

.page-contact .sample-body {
  padding: 0 22px 20px;
}

.page-contact .sample-body p {
  margin: 0;
  padding: 16px 18px;
  border-left: 3px solid var(--coral);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: rgba(11, 16, 32, 0.62);
  font-size: 0.96rem;
  line-height: 1.85;
  color: rgba(247, 245, 240, 0.86);
}

.page-contact .contact-fineprint {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--steel);
}

.page-contact .contact-fineprint a {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 渠道说明 */
.page-contact .channel-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-contact .channel {
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--line);
  border-left: 3px solid var(--coral);
  border-radius: var(--radius);
  background: var(--panel);
}

.page-contact .channel:nth-child(2) {
  border-left-color: var(--gold);
}

.page-contact .channel:nth-child(3) {
  border-left-color: var(--teal);
}

.page-contact .channel h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0;
  color: var(--white);
}

.page-contact .channel-value {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.94rem;
  line-height: 1.6;
  color: var(--gold);
  word-break: break-word;
}

.page-contact .channel p:last-child {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: rgba(247, 245, 240, 0.75);
}

/* 答疑索引 */
.page-contact .faq-index {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .faq-index a {
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  text-decoration: none;
  transition: transform var(--dur), border-color var(--dur);
}

.page-contact .faq-index a:hover {
  transform: translateY(-3px);
  border-color: var(--coral);
}

.page-contact .faq-kicker {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  color: var(--teal);
}

.page-contact .faq-text {
  font-size: 0.96rem;
  line-height: 1.75;
  color: rgba(247, 245, 240, 0.86);
}

/* 粘性联系卡 */
.page-contact .contact-card {
  padding: clamp(20px, 2.6vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, var(--panel-2), var(--panel));
}

.page-contact .contact-card .status {
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--teal);
}

.page-contact .contact-card h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--white);
}

.page-contact .contact-card .contact-note {
  margin-top: 16px;
  font-size: 0.84rem;
  line-height: 1.75;
  color: var(--steel);
}

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

/* 底部引导带 */
.page-contact .handoff {
  display: grid;
  gap: 20px;
  margin-top: var(--pc-head-gap);
  padding: clamp(24px, 4vw, 40px);
  border: 1px solid rgba(255, 78, 66, 0.35);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 140% at 90% 0%, rgba(255, 176, 32, 0.16), transparent 62%),
    linear-gradient(120deg, rgba(255, 78, 66, 0.16), rgba(11, 16, 32, 0.65));
}

.page-contact .handoff h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2rem);
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-contact .handoff p {
  margin: 0;
  max-width: 56ch;
  font-size: 0.98rem;
  line-height: 1.8;
  color: rgba(247, 245, 240, 0.8);
}

.page-contact .handoff-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

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

  .page-contact .faq-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .note-line {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
  }

  .page-contact .contact-shell {
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: clamp(32px, 4vw, 56px);
    align-items: start;
  }

  .page-contact .contact-flow {
    grid-column: 1;
    grid-row: 1;
  }

  .page-contact .contact-aside {
    grid-column: 2;
    grid-row: 1;
    order: 0;
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-contact .handoff {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .quick-pill,
  .page-contact .bubble,
  .page-contact .faq-index a {
    transition: none;
  }

  .page-contact .quick-pill:hover,
  .page-contact .faq-index a:hover {
    transform: none;
  }
}