.page-contact {
  color: var(--warm);
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  margin: 20px 0 0;
  font-size: 13px;
  letter-spacing: 0.04em;
}

.page-contact .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--stone);
}

.page-contact .breadcrumb__item a {
  color: var(--stone);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

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

.page-contact .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 8px;
  color: var(--ink-500);
}

.page-contact .breadcrumb__item span[aria-current="page"] {
  color: var(--sand);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(26px, 4.6vw, 54px) 0 clamp(20px, 3vw, 34px);
  background:
    radial-gradient(110% 130% at 4% 0%, rgba(63, 193, 255, 0.15), transparent 56%),
    radial-gradient(85% 110% at 102% 8%, rgba(255, 122, 41, 0.14), transparent 60%);
}

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

.page-contact .contact-hero .t-h1 {
  max-width: 20ch;
  margin: 14px 0 0;
}

.page-contact .contact-hero .lede {
  max-width: 58ch;
  margin: 18px 0 0;
  color: var(--sand);
}

/* ---------- 横幅图 ---------- */
.page-contact .contact-banner {
  position: relative;
  margin: 0;
  border: var(--hair);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-700);
  box-shadow: var(--shadow);
}

.page-contact .contact-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  object-position: center 42%;
}

.page-contact .contact-banner .figure__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  margin: 0;
  padding: 26px 20px 14px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--sand);
  background: linear-gradient(180deg, rgba(6, 35, 28, 0) 0%, rgba(6, 35, 28, 0.92) 72%);
}

/* ---------- 章节节奏 ---------- */
.page-contact .contact-band {
  padding-top: clamp(36px, 5.6vw, 72px);
}

.page-contact .contact-band .section__head {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-contact .contact-band .section__head .t-h2 {
  margin-top: 10px;
}

.page-contact .contact-band .section__head .note {
  margin-top: 10px;
  color: var(--stone);
}

/* ---------- 渠道卡 ---------- */
.page-contact .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 20px;
  border: var(--hair);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(12, 58, 46, 0.94) 0%, rgba(6, 35, 28, 0.94) 100%);
  box-shadow: var(--shadow);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.page-contact .channel-card::after {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  border-radius: var(--radius) var(--radius) 0 0;
  background: linear-gradient(90deg, var(--orange) 0%, rgba(255, 122, 41, 0) 72%);
}

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

.page-contact .channel-card__label {
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--blue);
}

.page-contact .channel-card__title {
  margin: 0;
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.3;
  color: var(--warm);
}

.page-contact .channel-card__value {
  margin: 0;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  line-height: 1.6;
  color: var(--orange);
  overflow-wrap: anywhere;
}

.page-contact .channel-card__body {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--sand);
}

.page-contact .channel-card__list {
  margin: auto 0 0;
  padding: 14px 0 0;
  list-style: none;
  display: grid;
  gap: 7px;
  border-top: var(--hair);
  font-size: 13px;
  line-height: 1.7;
  color: var(--stone);
}

.page-contact .channel-card__list li {
  position: relative;
  padding-left: 15px;
}

.page-contact .channel-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 7px;
  height: 1px;
  background: var(--ink-500);
}

/* ---------- 来信场景 ---------- */
.page-contact .scenario-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.page-contact .scenario-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-contact .scenario {
  border: var(--hair);
  border-radius: var(--radius-sm);
  background: rgba(12, 58, 46, 0.5);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.page-contact .scenario[open] {
  border-color: var(--ink-500);
  background: rgba(12, 58, 46, 0.92);
}

.page-contact .scenario summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 16px;
  list-style: none;
  cursor: pointer;
  font-size: 16px;
  color: var(--warm);
  transition: color 0.18s ease;
}

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

.page-contact .scenario summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--mono);
  font-size: 18px;
  line-height: 1;
  color: var(--blue);
}

.page-contact .scenario[open] summary::after {
  content: "\2212";
}

.page-contact .scenario summary:hover {
  color: var(--blue);
}

.page-contact .scenario__icon {
  display: inline-flex;
  flex: none;
  width: 26px;
  height: 26px;
  color: var(--orange);
}

.page-contact .scenario__icon svg {
  width: 100%;
  height: 100%;
}

.page-contact .scenario__body {
  margin: 0;
  padding: 0 16px 16px 54px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--sand);
}

/* 侧栏图与提示 */
.page-contact .scenario-aside {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-contact .scenario-figure {
  margin: 0;
  border: var(--hair);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-700);
}

.page-contact .scenario-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-contact .scenario-figure .figure__cap {
  margin: 0;
  padding: 12px 16px 14px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--stone);
}

.page-contact .scenario-tip {
  padding: 18px 18px 20px;
  border: var(--hair);
  border-left: 2px solid var(--orange);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: rgba(6, 35, 28, 0.6);
}

.page-contact .scenario-tip__title {
  margin: 0 0 10px;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--blue);
}

.page-contact .scenario-tip ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--sand);
}

/* ---------- 回复节奏 ---------- */
.page-contact .rhythm-track {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-contact .rhythm-step {
  position: relative;
  padding: 18px 18px 20px;
  border: var(--hair);
  border-radius: var(--radius-sm);
  background: rgba(12, 58, 46, 0.45);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.page-contact .rhythm-step:hover {
  border-color: var(--blue);
  background: rgba(12, 58, 46, 0.85);
}

.page-contact .rhythm-step__num {
  margin: 0;
  font-size: 26px;
  line-height: 1;
  color: var(--orange);
}

.page-contact .rhythm-step__title {
  margin: 10px 0 0;
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.4;
  color: var(--warm);
}

.page-contact .rhythm-step__body {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--sand);
}

.page-contact .rhythm-step__hint {
  margin: 10px 0 0;
  padding-top: 10px;
  border-top: 1px dashed rgba(23, 92, 73, 0.8);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--stone);
}

/* ---------- 内容合作 ---------- */
.page-contact .coop-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding: clamp(22px, 3.4vw, 36px);
  border: var(--hair);
  border-radius: var(--radius);
  background: var(--grad-moss);
  box-shadow: var(--shadow);
}

.page-contact .coop-panel__text .section__index {
  margin: 0;
}

.page-contact .coop-panel__text .t-h2 {
  margin: 10px 0 0;
}

.page-contact .coop-panel__lede {
  margin: 14px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--sand);
}

.page-contact .coop-directions {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-contact .coop-directions li {
  padding-left: 16px;
  border-left: 2px solid var(--ink-500);
}

.page-contact .coop-directions .tag {
  display: inline-block;
}

.page-contact .coop-directions p {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--sand);
}

.page-contact .coop-panel__text .note {
  margin-top: 18px;
  color: var(--stone);
}

.page-contact .coop-panel__side {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  align-content: start;
  padding-top: 20px;
  border-top: var(--hair);
}

.page-contact .coop-stat {
  padding: 16px 14px;
  border: var(--hair);
  border-radius: var(--radius-sm);
  background: rgba(6, 35, 28, 0.72);
}

.page-contact .coop-stat__num {
  margin: 0;
  font-size: 38px;
  line-height: 1;
  color: var(--orange);
}

.page-contact .coop-stat__label {
  margin: 8px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--stone);
}

.page-contact .coop-panel__note {
  grid-column: 1 / -1;
  margin: 4px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--stone);
}

.page-contact .coop-panel__note a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 193, 255, 0.35);
  transition: border-color 0.18s ease;
}

.page-contact .coop-panel__note a:hover {
  border-bottom-color: var(--blue);
}

/* ---------- 帮助中心窄带 ---------- */
.page-contact .help-strip {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  padding: clamp(22px, 3.4vw, 34px);
  border: 1px solid rgba(255, 122, 41, 0.34);
  border-radius: var(--radius);
  background:
    radial-gradient(90% 160% at 100% 0%, rgba(255, 122, 41, 0.18), transparent 62%),
    linear-gradient(180deg, rgba(12, 58, 46, 0.95) 0%, rgba(6, 35, 28, 0.2) 100%);
}

.page-contact .help-strip .t-h3 {
  margin: 0;
}

.page-contact .help-strip p {
  margin: 12px 0 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--sand);
}

.page-contact .help-strip .btn {
  justify-self: start;
}

/* ---------- 页脚上方说明 ---------- */
.page-contact .contact-footnote {
  margin: clamp(30px, 4.5vw, 52px) 0 clamp(46px, 7vw, 84px);
  padding-top: 20px;
  border-top: var(--hair);
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--stone);
}

.page-contact .contact-footnote a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 193, 255, 0.35);
  transition: border-color 0.18s ease, color 0.18s ease;
}

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

/* ---------- 响应式 ---------- */
@media (max-width: 520px) {
  .page-contact .channel-card {
    padding: 20px 16px;
  }

  .page-contact .scenario__body {
    padding-left: 16px;
  }

  .page-contact .scenario summary {
    align-items: flex-start;
    font-size: 15px;
  }

  .page-contact .coop-stat__num {
    font-size: 32px;
  }
}

@media (min-width: 720px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-contact .rhythm-track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (min-width: 900px) {
  .page-contact .scenario-layout {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 30px;
  }

  .page-contact .coop-panel {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: start;
    gap: 36px;
  }

  .page-contact .coop-panel__side {
    padding-top: 0;
    border-top: none;
    padding-left: 30px;
    border-left: var(--hair);
  }

  .page-contact .help-strip {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 34px;
  }

  .page-contact .help-strip .btn {
    justify-self: end;
  }

  .page-contact .rhythm-track {
    gap: 22px;
  }
}

@media (min-width: 1080px) {
  .page-contact .channel-card {
    padding: 28px 24px;
  }

  .page-contact .contact-banner .figure__cap {
    padding: 34px 28px 16px;
    font-size: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .rhythm-step,
  .page-contact .scenario,
  .page-contact .scenario summary,
  .page-contact .breadcrumb__item a,
  .page-contact .contact-footnote a,
  .page-contact .coop-panel__note a {
    transition: none;
  }

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