.page-contact {
  --pc-hair: rgba(47, 217, 201, 0.32);
  --pc-hair-soft: rgba(57, 66, 74, 0.82);
  --pc-panel: rgba(28, 34, 38, 0.74);
  --pc-gap: clamp(56px, 8vw, 112px);
  --pc-radius: 24px;
  color: var(--bone);
  padding-top: clamp(96px, 13vw, 148px);
  padding-bottom: clamp(64px, 10vw, 128px);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-contact .contact-crumbs {
  margin-bottom: clamp(20px, 3vw, 34px);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  display: grid;
  gap: 22px;
  max-width: 940px;
  padding-bottom: clamp(40px, 6vw, 72px);
  border-bottom: 1px solid var(--pc-hair-soft);
}

.page-contact .contact-hero__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(38px, 7.6vw, 78px);
  line-height: 1.06;
  letter-spacing: -0.01em;
}

.page-contact .contact-hero__title em {
  font-style: normal;
  color: var(--cyan);
}

.page-contact .contact-hero__lede {
  max-width: 62ch;
}

.page-contact .hero-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 32px;
  margin-top: 8px;
  padding-top: 20px;
  border-top: 1px dashed var(--pc-hair-soft);
  font-size: 14px;
  color: var(--mist);
}

.page-contact .hero-strip__item {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
}

.page-contact .hero-strip .num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 30px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--lime);
}

/* ---------- 通用区块间距 ---------- */
.page-contact .section {
  padding-top: var(--pc-gap);
}

.page-contact .channels__lede,
.page-contact .flow-sec__lede {
  margin-top: 16px;
  max-width: 58ch;
}

/* ---------- 三条通道 ---------- */
.page-contact .channel-grid {
  list-style: none;
  margin: clamp(32px, 5vw, 48px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-contact .channel-card {
  --card-accent: var(--cyan);
  position: relative;
  display: grid;
  gap: 12px;
  padding: 28px 24px 24px;
  background: var(--pc-panel);
  border: 1px solid var(--pc-hair-soft);
  border-radius: var(--pc-radius);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 24px;
  width: 48px;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: var(--card-accent);
}

.page-contact .channel-card[data-tone="clay"] { --card-accent: var(--clay); }
.page-contact .channel-card[data-tone="lime"] { --card-accent: var(--lime); }

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  transform: translateY(-4px);
  border-color: var(--pc-hair);
}

.page-contact .channel-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  background: rgba(47, 217, 201, 0.08);
  color: var(--card-accent);
}

.page-contact .channel-card__icon svg {
  width: 24px;
  height: 24px;
}

.page-contact .channel-card__label {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-contact .channel-card__value {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 3.2vw, 26px);
  line-height: 1.3;
  letter-spacing: 0.01em;
  color: var(--bone);
  word-break: break-word;
}

.page-contact .channel-card__use {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(244, 241, 233, 0.86);
}

.page-contact .channel-card__note {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--pc-hair-soft);
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 资料查询 ---------- */
.page-contact .brief-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-top: 24px;
}

.page-contact .brief__list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-contact .brief__list li {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 12px;
  align-items: start;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(244, 241, 233, 0.9);
}

.page-contact .brief__idx {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.6;
  color: var(--flame);
}

.page-contact .brief__figure {
  margin: 0;
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-contact .brief__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--pc-radius);
  border: 1px solid var(--pc-hair-soft);
  object-fit: cover;
}

.page-contact .brief__figure figcaption {
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .mail-template {
  margin-top: clamp(32px, 5vw, 48px);
  padding: 24px;
  border: 1px solid var(--pc-hair);
  border-radius: var(--pc-radius);
  background: var(--ink);
  display: grid;
  gap: 8px;
  overflow-x: auto;
}

.page-contact .mail-template__cap {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-contact .mail-template__cap + .mail-template__line {
  margin-bottom: 12px;
}

.page-contact .mail-template__line {
  margin: 0;
  font-family: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 14px;
  line-height: 1.9;
  color: var(--bone);
  white-space: pre-wrap;
  word-break: break-word;
}

.page-contact .mail-template__tag {
  display: inline-block;
  padding: 2px 10px;
  border-radius: var(--pill);
  background: rgba(47, 217, 201, 0.14);
  color: var(--cyan);
  font-weight: 600;
}

/* ---------- 合作与建议 ---------- */
.page-contact .collab-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: clamp(28px, 4vw, 40px);
}

.page-contact .collab-card {
  padding: 26px 24px;
  border-radius: var(--pc-radius);
  background: var(--pc-panel);
  border: 1px solid var(--pc-hair-soft);
  border-left: 3px solid var(--moss);
}

.page-contact .collab-card__title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.4;
  color: var(--bone);
}

.page-contact .collab-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 241, 233, 0.86);
}

.page-contact .collab-foot {
  margin: clamp(24px, 4vw, 36px) 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .collab-foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 217, 201, 0.4);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .collab-foot a:hover,
.page-contact .collab-foot a:focus-visible {
  color: var(--bone);
  border-color: var(--bone);
}

/* ---------- 地址与备案 ---------- */
.page-contact .where {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-lg);
  border: 1px solid var(--pc-hair-soft);
  padding: clamp(32px, 5vw, 56px);
}

.page-contact .where__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-contact .where__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.16;
}

.page-contact .where__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(18, 22, 26, 0.72) 0%, rgba(18, 22, 26, 0.94) 68%);
}

.page-contact .where__inner {
  position: relative;
  z-index: 1;
}

.page-contact .where__title {
  max-width: 22ch;
}

.page-contact .where-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: clamp(28px, 4vw, 40px);
}

.page-contact .where-item {
  display: grid;
  gap: 8px;
  padding-top: 20px;
  border-top: 1px solid var(--pc-hair);
}

.page-contact .where-item__key {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-contact .where-item__val {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 3vw, 26px);
  line-height: 1.35;
  letter-spacing: 0.01em;
  color: var(--bone);
  word-break: break-word;
}

.page-contact .where-item__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(244, 241, 233, 0.78);
}

/* ---------- 处理顺序 ---------- */
.page-contact .flow {
  list-style: none;
  margin: clamp(32px, 5vw, 48px) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-contact .flow__item {
  position: relative;
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 20px;
  padding-bottom: clamp(28px, 4vw, 44px);
}

.page-contact .flow__item:last-child {
  padding-bottom: 0;
}

.page-contact .flow__item::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 20px;
  bottom: 0;
  width: 1px;
  background: var(--pc-hair-soft);
}

.page-contact .flow__item:last-child::before {
  display: none;
}

.page-contact .flow__dot {
  display: block;
  width: 13px;
  height: 13px;
  margin-top: 6px;
  border-radius: 50%;
  background: var(--clay);
  box-shadow: 0 0 0 5px rgba(194, 100, 63, 0.16);
}

.page-contact .flow__body {
  display: grid;
  gap: 6px;
}

.page-contact .flow__step {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--clay);
}

.page-contact .flow__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(18px, 2.4vw, 22px);
  line-height: 1.45;
  color: var(--bone);
}

.page-contact .flow__body p:not(.flow__step) {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 241, 233, 0.82);
}

/* ---------- 收口 ---------- */
.page-contact .closing__panel {
  position: relative;
  padding: clamp(32px, 5vw, 56px);
  border-radius: var(--r-lg);
  border: 1px solid var(--pc-hair);
  background: linear-gradient(140deg, rgba(28, 34, 38, 0.94) 0%, rgba(18, 22, 26, 0.98) 100%);
  display: grid;
  gap: 18px;
}

.page-contact .closing__title {
  max-width: 26ch;
}

.page-contact .closing__panel .lede {
  max-width: 60ch;
}

.page-contact .closing__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

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

/* ---------- 焦点可读性 ---------- */
.page-contact a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .collab-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .where-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 980px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-contact .brief-grid {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
  }

  .page-contact .collab-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-contact .where-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
  }

  .page-contact .flow__item {
    grid-template-columns: 22px 1fr;
    gap: 28px;
  }

  .page-contact .flow {
    max-width: 820px;
  }
}

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

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