.page-contact {
  --ct-gap: clamp(2rem, 5vw, 3.6rem);
  padding-bottom: clamp(2.5rem, 7vw, 5rem);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.6rem);
  align-items: end;
  padding: clamp(1.4rem, 4vw, 2.4rem) 0 clamp(1.8rem, 5vw, 3rem);
  overflow: hidden;
}
.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: -20% -25% 25% 35%;
  background:
    radial-gradient(58% 58% at 70% 22%, rgba(125, 240, 193, 0.16), transparent 70%),
    linear-gradient(120deg, rgba(18, 59, 47, 0.55), transparent 66%);
  transform: skewY(-6deg);
  pointer-events: none;
  z-index: 0;
}
.page-contact .hero-copy,
.page-contact .hero-shot {
  position: relative;
  z-index: 1;
  min-width: 0;
}
.page-contact .hero-copy h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 7.2vw, 3.8rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0.55rem 0 0;
  color: var(--text);
  max-width: 15em;
  overflow-wrap: break-word;
}
.page-contact .hero-copy .lede {
  margin: 0.9rem 0 0;
  max-width: 46ch;
  color: var(--muted);
  font-size: clamp(0.92rem, 2.6vw, 1rem);
  line-height: 1.7;
}
.page-contact .hero-marks {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.15rem 0 0;
  padding: 0;
  list-style: none;
}
.page-contact .hero-shot {
  margin: 0;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  overflow: hidden;
  box-shadow: 0 30px 70px -50px rgba(0, 0, 0, 0.95);
}
.page-contact .hero-shot img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}
.page-contact .hero-shot::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 26, 20, 0) 42%, rgba(6, 26, 20, 0.86));
  pointer-events: none;
}
.page-contact .hero-badge {
  position: absolute;
  left: 0.9rem;
  bottom: 0.9rem;
  z-index: 2;
  display: grid;
  gap: 0.18rem;
  padding: 0.55rem 0.85rem;
  border: 1px solid var(--edge);
  border-radius: 10px;
  background: var(--glass);
  backdrop-filter: blur(8px);
}
.page-contact .badge-k {
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}
.page-contact .badge-v {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--lime);
}

/* ---------- 分诊台 ---------- */
.page-contact .triage {
  display: grid;
  gap: var(--ct-gap);
  margin-top: var(--ct-gap);
  align-items: start;
}
.page-contact .triage-main,
.page-contact .contact-card {
  min-width: 0;
}
.page-contact .section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 4vw, 1.85rem);
  line-height: 1.28;
  letter-spacing: -0.01em;
  margin: 0.35rem 0 0.5rem;
  color: var(--text);
}
.page-contact .section-head .section-note {
  margin: 0;
  max-width: 46ch;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--muted);
}
.page-contact .triage-list {
  display: grid;
  gap: 0.65rem;
  margin-top: 1.25rem;
}
.page-contact .triage-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(18, 59, 47, 0.55), rgba(11, 42, 33, 0.92));
  overflow: hidden;
  transition: border-color 0.2s var(--ease);
}
.page-contact .triage-item[open] {
  border-color: var(--lime);
}
.page-contact .triage-item summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.8rem;
  align-items: center;
  padding: 0.95rem 1rem;
  cursor: pointer;
  list-style: none;
}
.page-contact .triage-item summary::-webkit-details-marker {
  display: none;
}
.page-contact .triage-item summary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: -2px;
}
.page-contact .triage-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--lime);
}
.page-contact .triage-text {
  display: grid;
  gap: 0.15rem;
  min-width: 0;
}
.page-contact .triage-name {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text);
}
.page-contact .triage-hint {
  font-size: 0.76rem;
  color: var(--muted);
  line-height: 1.5;
}
.page-contact .triage-arrow {
  position: relative;
  width: 1.05rem;
  height: 1.05rem;
  flex: 0 0 auto;
}
.page-contact .triage-arrow::before,
.page-contact .triage-arrow::after {
  content: "";
  position: absolute;
  background: var(--lime);
  border-radius: 1px;
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
}
.page-contact .triage-arrow::before {
  left: 50%;
  top: 8%;
  width: 1.5px;
  height: 84%;
  transform: translateX(-50%);
}
.page-contact .triage-arrow::after {
  top: 50%;
  left: 8%;
  height: 1.5px;
  width: 84%;
  transform: translateY(-50%);
}
.page-contact details[open] > summary .triage-arrow::before {
  opacity: 0;
}
.page-contact .triage-body {
  padding: 0 1rem 1.05rem;
}
.page-contact .triage-body p {
  margin: 0.25rem 0 0;
  font-size: 0.87rem;
  line-height: 1.75;
  color: var(--muted);
}
.page-contact .triage-body .triage-channel {
  margin-top: 0.65rem;
  color: var(--text);
  font-size: 0.82rem;
}
.page-contact .triage-channel a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 255, 61, 0.5);
}
.page-contact .triage-channel a:hover {
  border-bottom-color: var(--lime);
}

/* ---------- 联系信息大卡 ---------- */
.page-contact .contact-card {
  position: relative;
  padding: clamp(1.25rem, 3.2vw, 1.8rem);
  border: 1px solid var(--line);
  border-top: 3px solid var(--gold);
  border-radius: var(--radius);
  background:
    radial-gradient(80% 60% at 100% 0%, rgba(240, 193, 92, 0.14), transparent 70%),
    linear-gradient(170deg, rgba(18, 59, 47, 0.7), rgba(11, 42, 33, 0.95));
  box-shadow: 0 28px 70px -55px rgba(0, 0, 0, 0.95);
}
.page-contact .card-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--gold);
}
.page-contact .card-title {
  margin: 0.45rem 0 1.1rem;
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 3.2vw, 1.32rem);
  line-height: 1.4;
  color: var(--text);
}
.page-contact .contact-rows {
  display: grid;
  gap: 0.85rem;
  margin: 0;
}
.page-contact .contact-row {
  display: grid;
  gap: 0.22rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--line);
}
.page-contact .contact-row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}
.page-contact .contact-row dt {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--muted);
}
.page-contact .contact-row dd {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.6;
  color: var(--text);
  overflow-wrap: anywhere;
}
.page-contact .val--mono {
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
  color: var(--lime);
}
.page-contact .val--big {
  font-size: clamp(1.15rem, 3.6vw, 1.5rem);
  color: var(--gold);
}
.page-contact .card-note {
  margin: 1rem 0 0;
  padding-left: 0.7rem;
  border-left: 2px solid var(--edge);
  font-size: 0.8rem;
  line-height: 1.75;
  color: var(--muted);
}
.page-contact .card-note--gold {
  border-left-color: var(--gold);
  color: var(--text);
}
.page-contact .card-foot {
  margin: 0.9rem 0 0;
  font-size: 0.76rem;
  color: var(--muted);
}

/* ---------- 紧急技术问题 ---------- */
.page-contact .urgent {
  margin-top: var(--ct-gap);
  padding: clamp(1.2rem, 3.4vw, 2.1rem);
  border-left: 3px solid var(--red);
  border-radius: var(--radius);
  background:
    linear-gradient(100deg, rgba(142, 47, 53, 0.34), rgba(11, 42, 33, 0.94) 58%);
}
.page-contact .urgent-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.22rem, 3.8vw, 1.7rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin: 0.35rem 0 0.55rem;
  color: var(--text);
}
.page-contact .urgent-head p {
  margin: 0;
  max-width: 52ch;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--muted);
}
.page-contact .steps {
  margin-top: 1.1rem;
}
.page-contact .step-item {
  border-bottom: 1px solid var(--line);
}
.page-contact .step-item:last-child {
  border-bottom: 0;
}
.page-contact .step-item summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.75rem;
  align-items: center;
  padding: 0.75rem 0;
  cursor: pointer;
  list-style: none;
}
.page-contact .step-item summary::-webkit-details-marker {
  display: none;
}
.page-contact .step-item summary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}
.page-contact .step-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--gold);
  white-space: nowrap;
}
.page-contact .step-name {
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text);
}
.page-contact .step-body p {
  margin: 0 0 0.85rem;
  padding-right: 0.4rem;
  font-size: 0.85rem;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 准备清单 ---------- */
.page-contact .prep {
  display: grid;
  gap: var(--ct-gap);
  margin-top: var(--ct-gap);
  align-items: start;
}
.page-contact .prep-col {
  min-width: 0;
}
.page-contact .check-list {
  display: grid;
  gap: 0.55rem;
  margin: 1.2rem 0 0;
  padding: 0;
  list-style: none;
}
.page-contact .check-list label {
  position: relative;
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(18, 59, 47, 0.34);
  cursor: pointer;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.page-contact .check-list label:hover {
  border-color: var(--edge);
}
.page-contact .check-list input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.page-contact .box {
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  border: 1px solid var(--edge);
  border-radius: 4px;
  background: rgba(6, 26, 20, 0.7);
  transition: background 0.15s var(--ease), border-color 0.15s var(--ease);
}
.page-contact .box::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(40deg);
  opacity: 0;
  transition: opacity 0.15s var(--ease);
}
.page-contact input:checked ~ .box {
  background: var(--lime);
  border-color: var(--lime);
}
.page-contact input:checked ~ .box::after {
  opacity: 1;
}
.page-contact input:focus-visible ~ .box {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}
.page-contact .check-txt {
  font-size: 0.87rem;
  line-height: 1.65;
  color: var(--text);
  transition: color 0.15s var(--ease);
}
.page-contact input:checked ~ .check-txt {
  color: var(--muted);
}
.page-contact .prep-shot {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--panel);
}
.page-contact .prep-shot img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 20 / 13;
  object-fit: cover;
}
.page-contact .prep-shot figcaption {
  padding: 0.7rem 0.9rem;
  border-top: 1px solid var(--line);
  font-size: 0.75rem;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 合作与媒体 ---------- */
.page-contact .partners {
  margin-top: var(--ct-gap);
}
.page-contact .partner-grid {
  display: grid;
  gap: 0.9rem;
  margin-top: 1.3rem;
}
.page-contact .partner-card {
  min-width: 0;
  padding: 1.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(18, 59, 47, 0.7), rgba(11, 42, 33, 0.92));
}
.page-contact .partner-card h3 {
  margin: 0.5rem 0 0.4rem;
  font-size: 1rem;
  color: var(--text);
}
.page-contact .partner-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 6vw, 2.5rem);
  line-height: 1;
  color: var(--lime);
}
.page-contact .partner-card p {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.75;
  color: var(--muted);
}
.page-contact .partner-card--gold {
  border-color: rgba(240, 193, 92, 0.7);
  background: linear-gradient(150deg, rgba(240, 193, 92, 0.14), rgba(11, 42, 33, 0.92));
}
.page-contact .partner-card--gold p {
  color: var(--text);
}
.page-contact .mail-format {
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--gold);
  letter-spacing: 0.02em;
  word-break: break-all;
}

/* ---------- 页尾行动条 ---------- */
.page-contact .contact-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--ct-gap);
  padding: 1.25rem 1.35rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}
.page-contact .contact-foot p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text);
}
.page-contact .foot-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

/* ---------- 媒体查询 ---------- */
@media (min-width: 760px) {
  .page-contact .prep {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }
  .page-contact .partner-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  }
  .page-contact .triage {
    grid-template-columns: minmax(0, 1.28fr) minmax(0, 0.85fr);
  }
  .page-contact .contact-card {
    position: sticky;
    top: calc(var(--header-h) + 1.2rem);
  }
  .page-contact .urgent {
    padding-right: clamp(2rem, 5vw, 3.2rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .triage-arrow::before,
  .page-contact .triage-arrow::after,
  .page-contact .box,
  .page-contact .box::after,
  .page-contact .check-txt,
  .page-contact .triage-item {
    transition: none;
  }
}