.page-contact {
  --ct-gap: clamp(16px, 2.4vw, 28px);
  --ct-pad: clamp(20px, 3vw, 34px);
}

.page-contact .section {
  padding-block: clamp(46px, 7vw, 88px);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: calc(var(--bar-h) + 54px) 0 clamp(42px, 8vw, 78px);
}

.page-contact .contact-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(120% 90% at 84% 6%, rgba(43, 240, 198, 0.16), transparent 62%),
    linear-gradient(180deg, #04100d 0%, var(--ink) 100%);
}

.page-contact .contact-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
}

.page-contact .contact-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--ink) 10%, rgba(6, 21, 18, 0.62) 58%, rgba(6, 21, 18, 0.24) 100%);
}

.page-contact .contact-hero__inner {
  position: relative;
}

.page-contact .contact-hero__title {
  margin: 16px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(33px, 8.4vw, 82px);
  line-height: 0.98;
  letter-spacing: 0.02em;
  color: var(--mist);
  max-width: 13em;
}

.page-contact .contact-hero__lede {
  margin: 20px 0 0;
  max-width: 36em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--muted);
}

.page-contact .contact-hero__quick {
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
}

.page-contact .quick__item {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mist);
  padding-left: 14px;
  border-left: 2px solid var(--neon);
}

.page-contact .quick__item--cyan {
  border-left-color: var(--cyan);
}

.page-contact .quick__item--flare {
  border-left-color: var(--flare);
}

/* ---------- 渠道卡片 ---------- */
.page-contact .channel-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ct-gap);
  margin-top: clamp(26px, 4vw, 44px);
}

.page-contact .channel {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: var(--ct-pad);
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: var(--cut-lg);
  transition: border-color 120ms var(--ease), transform 120ms var(--ease);
}

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

.page-contact .channel--addr:hover,
.page-contact .channel--addr:focus-within {
  border-color: var(--cyan);
}

.page-contact .channel__tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .channel__title {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--mist);
}

.page-contact .channel__value {
  display: block;
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(17px, 4vw, 25px);
  letter-spacing: 0.02em;
  color: var(--neon);
  text-decoration: none;
  overflow-wrap: anywhere;
  border-bottom: 2px solid transparent;
  transition: border-color 120ms var(--ease);
}

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

.page-contact .channel__value--phone {
  color: var(--cyan);
}

.page-contact .channel__value--addr {
  font-size: clamp(15px, 2.6vw, 19px);
  line-height: 1.6;
  color: var(--mist);
}

.page-contact .channel__desc {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.page-contact .channel__act {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: auto;
  padding-top: 12px;
}

.page-contact .copy-btn {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  padding: 9px 16px;
  background: transparent;
  color: var(--neon);
  border: 1px solid var(--neon);
  clip-path: var(--cut-sm);
  cursor: pointer;
  transition: background-color 120ms var(--ease), color 120ms var(--ease), border-color 120ms var(--ease);
}

.page-contact .copy-btn:hover,
.page-contact .copy-btn:focus-visible {
  background: var(--neon);
  color: var(--on-neon);
}

.page-contact .copy-btn[data-copied] {
  background: transparent;
  color: var(--flare);
  border-color: var(--flare);
}

.page-contact .channels__figure {
  margin: clamp(26px, 4vw, 44px) 0 0;
}

/* ---------- 邮箱用法 ---------- */
.page-contact .split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ct-gap);
}

.page-contact .split__lede {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.78;
  max-width: 32em;
}

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

.page-contact .checklist__item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 18px 18px 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 2px solid var(--line);
  transition: border-color 120ms var(--ease), transform 120ms var(--ease);
}

.page-contact .checklist__item:hover {
  border-color: var(--neon);
  border-left-color: var(--flare);
  transform: translateX(2px);
}

.page-contact .checklist__idx {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-contact .checklist__title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 600;
  color: var(--mist);
}

.page-contact .checklist__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 电话 ---------- */
.page-contact .phone__panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ct-gap);
  padding: clamp(22px, 4vw, 46px);
  background: linear-gradient(120deg, var(--panel) 0%, var(--deep) 78%);
  border: 1px solid var(--line);
  clip-path: var(--cut-lg);
}

.page-contact .phone__num {
  display: inline-block;
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: clamp(30px, 6.4vw, 56px);
  letter-spacing: 0.02em;
  color: var(--flare);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color 120ms var(--ease);
}

.page-contact .phone__num:hover,
.page-contact .phone__num:focus-visible {
  border-bottom-color: var(--flare);
}

.page-contact .phone__hint {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
  max-width: 30em;
}

.page-contact .phone__prep-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--neon);
}

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

.page-contact .phone__list li {
  padding-left: 16px;
  position: relative;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.7;
}

.page-contact .phone__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}

/* ---------- 地址 ---------- */
.page-contact .addr__panel {
  padding: clamp(22px, 4vw, 46px);
  background: var(--panel-2);
  border: 1px solid var(--line);
  clip-path: var(--cut-lg);
}

.page-contact .addr__full {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(17px, 3.4vw, 25px);
  letter-spacing: 0.02em;
  line-height: 1.5;
  color: var(--mist);
  overflow-wrap: anywhere;
}

.page-contact .addr__cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-top: clamp(22px, 3.6vw, 36px);
}

.page-contact .addr__col {
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.page-contact .addr__col h3 {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--neon);
}

.page-contact .addr__col p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 反馈流程 ---------- */
.page-contact .flow {
  list-style: none;
  margin: clamp(24px, 4vw, 42px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-contact .flow__step {
  padding: 20px 20px 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: var(--cut);
  transition: border-color 120ms var(--ease), background-color 120ms var(--ease);
}

.page-contact .flow__step:hover {
  border-color: var(--neon);
  background: var(--panel-2);
}

.page-contact .flow__num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--neon);
}

.page-contact .flow__title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 600;
  color: var(--mist);
}

.page-contact .flow__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .flow__more {
  margin: 12px 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  max-height: none;
  opacity: 1;
  overflow: visible;
}

/* ---------- 内容合作 ---------- */
.page-contact .coop-card {
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: var(--cut);
  transition: border-color 120ms var(--ease), transform 120ms var(--ease);
}

.page-contact .coop-card:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-contact .coop-card__tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-contact .coop-card__title {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--mist);
}

.page-contact .coop-card__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .coop__foot {
  margin: clamp(20px, 3vw, 30px) 0 0;
  max-width: 46em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 收尾承诺 ---------- */
.page-contact .promise__panel {
  padding: clamp(28px, 5vw, 62px);
  background:
    radial-gradient(90% 130% at 0% 0%, rgba(43, 240, 198, 0.14), transparent 58%),
    var(--panel);
  border: 1px solid var(--line);
  clip-path: var(--cut-lg);
}

.page-contact .promise__line {
  margin: 0;
  max-width: 22em;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(23px, 4.6vw, 44px);
  line-height: 1.14;
  letter-spacing: 0.02em;
  color: var(--mist);
}

.page-contact .promise__sub {
  margin: 18px 0 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .promise__act {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-contact .addr__cols {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(18px, 3vw, 32px);
  }
}

@media (min-width: 860px) {
  .page-contact .phone__panel {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: clamp(28px, 5vw, 64px);
    align-items: start;
  }

  .page-contact .flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-contact .flow__more {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    margin-top: 0;
    padding-top: 0;
    border-top-color: transparent;
    transition: max-height 180ms var(--ease), opacity 180ms var(--ease),
      margin-top 180ms var(--ease), padding-top 180ms var(--ease), border-color 180ms var(--ease);
  }

  .page-contact .flow__step:hover .flow__more,
  .page-contact .flow__step:focus-within .flow__more {
    max-height: 180px;
    opacity: 1;
    margin-top: 12px;
    padding-top: 10px;
    border-top-color: var(--line);
  }
}

@media (min-width: 900px) {
  .page-contact .channel-grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr) minmax(0, 1fr);
    align-items: stretch;
  }

  .page-contact .split {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: clamp(28px, 5vw, 66px);
    align-items: start;
  }

  .page-contact .split__aside {
    position: sticky;
    top: calc(var(--bar-h) + 24px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .checklist__item,
  .page-contact .coop-card,
  .page-contact .copy-btn,
  .page-contact .flow__more {
    transition: color 120ms linear, border-color 120ms linear, background-color 120ms linear;
  }

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