.page-contact .contact-intro {
  max-width: 46rem;
}

.page-contact .contact-intro h1 {
  margin: 0.75rem 0 1.1rem;
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(1.9rem, 7.2vw, 3.4rem);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--ice);
}

.page-contact .contact-intro .lede {
  max-width: 42rem;
}

/* ---------- 邮箱 + 提交要点 ---------- */
.page-contact .mail-layout {
  display: grid;
  gap: var(--sp-4);
}

.page-contact .mail-card {
  position: relative;
  overflow: hidden;
  padding: var(--sp-3);
  background: linear-gradient(158deg, #16224a 0%, var(--panel) 56%, #0c142c 100%);
}

.page-contact .mail-card::after {
  content: "";
  position: absolute;
  right: -30%;
  bottom: -65%;
  width: 20rem;
  height: 20rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200, 16, 46, 0.28), transparent 66%);
  pointer-events: none;
}

.page-contact .mail-card__kicker {
  margin: 0;
  font-family: var(--sans);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .mail-card__addr {
  position: relative;
  margin: 0.9rem 0 1.2rem;
  font-family: var(--mono);
  font-size: clamp(1.02rem, 4.6vw, 1.85rem);
  letter-spacing: -0.02em;
  line-height: 1.3;
  color: var(--pure);
  word-break: break-all;
}

.page-contact .mail-card__actions {
  flex-wrap: wrap;
  gap: var(--sp-2);
  position: relative;
}

.page-contact .mail-card__note {
  position: relative;
  margin: 1.3rem 0 0;
  max-width: 34rem;
  color: var(--mist);
}

.page-contact .mail-card__facts {
  position: relative;
  margin: 1.6rem 0 0;
  padding: 1.25rem 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
  display: grid;
  gap: var(--sp-2);
}

.page-contact .mail-card__facts .stat {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.page-contact .mail-card__facts .stat__k {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-contact .mail-card__facts .stat__v {
  font-family: var(--mono);
  font-size: 1rem;
  letter-spacing: -0.02em;
  color: var(--amber);
}

.page-contact .checklist {
  padding-top: var(--sp-3);
  border-top: 1px solid var(--line);
}

.page-contact .checklist__hint {
  margin: 0 0 var(--sp-2);
  font-size: 0.92rem;
  color: var(--mist);
}

.page-contact .checklist__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--sp-2);
}

.page-contact .check-item {
  display: flex;
  gap: var(--sp-2);
  padding: var(--sp-2);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  background: rgba(18, 28, 61, 0.45);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-contact .check-item:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
  background: rgba(18, 28, 61, 0.72);
}

.page-contact .check-item__box {
  flex: 0 0 auto;
  width: 1.2rem;
  height: 1.2rem;
  margin: 0.2rem 0 0;
  -webkit-appearance: none;
  appearance: none;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--night);
  cursor: pointer;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .check-item__box:checked {
  background: var(--cyan-deep);
  border-color: var(--cyan);
  box-shadow: inset 0 0 0 3px var(--night);
}

.page-contact .check-item__box:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.page-contact .check-item__label {
  display: flex;
  gap: 0.7rem;
  cursor: pointer;
}

.page-contact .check-item__num {
  flex: 0 0 auto;
  padding-top: 0.15rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--amber);
}

.page-contact .check-item__text {
  font-size: 0.93rem;
  line-height: 1.65;
  color: var(--ink);
}

.page-contact .check-item__text strong {
  color: var(--ice);
  font-weight: 500;
}

/* ---------- 电话与地址 ---------- */
.page-contact .reach-grid {
  display: grid;
  gap: var(--sp-4);
}

.page-contact .reach-card {
  padding: var(--sp-3);
  border-radius: var(--r-panel);
}

.page-contact .reach-card--phone {
  border-color: rgba(200, 16, 46, 0.45);
  background: linear-gradient(180deg, #18244d 0%, var(--panel) 100%);
}

.page-contact .reach-card--place {
  border-color: rgba(53, 208, 192, 0.32);
}

.page-contact .reach-card .media {
  margin-bottom: var(--sp-3);
}

.page-contact .reach-card__kicker {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .reach-card__big {
  margin: 0.7rem 0 1rem;
  font-family: var(--mono);
  font-size: clamp(1.2rem, 5vw, 1.9rem);
  letter-spacing: -0.02em;
  line-height: 1.3;
  color: var(--ice);
  word-break: break-word;
}

.page-contact .reach-card--phone .reach-card__big {
  color: var(--pure);
}

.page-contact .reach-card__desc {
  margin: 0 0 var(--sp-2);
  max-width: 34rem;
  color: var(--mist);
}

.page-contact .reach-card__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.55rem;
}

.page-contact .reach-card__list li {
  position: relative;
  padding-left: 1.2rem;
  font-size: 0.94rem;
  color: var(--ink);
}

.page-contact .reach-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--cyan);
}

/* ---------- 处理路径 ---------- */
.page-contact .flow-layout {
  display: grid;
  gap: var(--sp-4);
}

.page-contact .flow-figure {
  margin: 0;
  border-radius: var(--r-panel);
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-contact .flow-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--sp-2);
}

.page-contact .flow-step {
  position: relative;
  padding: var(--sp-3);
  padding-left: calc(var(--sp-3) + 2.6rem);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  background: linear-gradient(180deg, rgba(18, 28, 61, 0.88), rgba(10, 17, 40, 0.6));
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-contact .flow-step:hover,
.page-contact .flow-step:focus-visible {
  border-color: var(--cyan);
  transform: translateY(-2px);
  outline: none;
}

.page-contact .flow-step__num {
  position: absolute;
  left: var(--sp-3);
  top: var(--sp-3);
  font-family: var(--mono);
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  color: var(--amber);
}

.page-contact .flow-step h3 {
  margin: 0 0 0.5rem;
  font-family: var(--sans);
  font-weight: 500;
  font-size: 1.02rem;
  line-height: 1.45;
  color: var(--ice);
}

.page-contact .flow-step p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.65;
  color: var(--mist);
}

.page-contact .flow-step__tip {
  display: block;
  margin-top: 0.75rem;
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: -0.01em;
  color: var(--cyan);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}

/* ---------- 合作共建 ---------- */
.page-contact .coop-grid {
  display: grid;
  gap: var(--sp-2);
}

.page-contact .coop-card {
  padding: var(--sp-3);
}

.page-contact .coop-card__tag {
  display: inline-block;
  margin: 0 0 0.9rem;
  padding: 0.28rem 0.75rem;
  border: 1px solid rgba(53, 208, 192, 0.5);
  border-radius: var(--r-pill);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-contact .coop-card h3 {
  margin: 0 0 0.55rem;
  font-family: var(--sans);
  font-weight: 500;
  font-size: 1.05rem;
  color: var(--ice);
}

.page-contact .coop-card p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .coop-foot {
  margin-top: var(--sp-3);
  padding-top: var(--sp-3);
  border-top: 1px solid var(--line);
}

/* ---------- 收束 ---------- */
.page-contact .contact-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-3);
  border: 1px solid var(--line);
  border-radius: var(--r-panel);
  background: linear-gradient(118deg, rgba(200, 16, 46, 0.2) 0%, rgba(18, 28, 61, 0.92) 58%, rgba(10, 17, 40, 0.95) 100%);
}

.page-contact .contact-cta p {
  margin: 0;
  max-width: 34rem;
  color: var(--ink);
}

.page-contact .contact-cta__btns {
  flex-wrap: wrap;
  gap: var(--sp-2);
}

.page-contact .contact-foot-note {
  margin: var(--sp-3) 0 0;
  font-size: 0.88rem;
  color: var(--mist);
}

.page-contact .contact-foot-note a {
  color: var(--cyan);
}

/* ---------- 中等屏幕 ---------- */
@media (min-width: 640px) {
  .page-contact .mail-card {
    padding: var(--sp-4) var(--sp-3);
  }

  .page-contact .mail-card__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--sp-3);
  }

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

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-contact .mail-layout {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 1fr);
    align-items: start;
    gap: var(--sp-4);
  }

  .page-contact .checklist {
    padding-top: 0;
    padding-left: var(--sp-3);
    border-top: 0;
    border-left: 1px solid var(--line);
    margin-top: 3rem;
  }

  .page-contact .reach-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
    align-items: start;
  }

  .page-contact .reach-card--place {
    margin-top: 3.25rem;
  }

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

  .page-contact .flow-step__tip {
    opacity: 0;
    transform: translateY(-4px);
  }

  .page-contact .flow-step:hover .flow-step__tip,
  .page-contact .flow-step:focus-visible .flow-step__tip {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (min-width: 1000px) {
  .page-contact .flow-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr);
    align-items: start;
    gap: var(--sp-4);
  }

  .page-contact .mail-layout {
    gap: var(--sp-5);
  }
}