/* ===== 联系我们页面 ===== */

.page-contact {
  background: var(--ink-900);
}

.page-contact .contact-hero {
  position: relative;
  padding: clamp(26px, 4.5vw, 58px) 0 clamp(34px, 5vw, 74px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: -12% -6% -12% -6%;
  background-image:
    linear-gradient(to right, rgba(30, 44, 70, .62) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30, 44, 70, .62) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(120% 92% at 76% 32%, #000 0%, transparent 72%);
  mask-image: radial-gradient(120% 92% at 76% 32%, #000 0%, transparent 72%);
  opacity: .5;
  pointer-events: none;
}

.page-contact .hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

@media (min-width: 980px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
  }
}

.page-contact .hero-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-contact .hero-meta__rule {
  width: clamp(34px, 7vw, 88px);
  height: 1px;
  background: linear-gradient(90deg, var(--sand), rgba(217, 162, 74, 0));
}

.page-contact .hero-meta__icp {
  color: var(--sand);
}

.page-contact .hero-meta__dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--line);
}

.page-contact h1 {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.1rem, 6.2vw, 4rem);
  line-height: 1.05;
  letter-spacing: -.03em;
  color: var(--bright);
}

.page-contact .hero-lead {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--text);
}

.page-contact .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

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

.page-contact .hero-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---- 左右分屏 ---- */

.page-contact .contact-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
  align-items: start;
}

@media (min-width: 1000px) {
  .page-contact .contact-split {
    grid-template-columns: minmax(0, .84fr) minmax(0, 1.16fr);
  }
}

.page-contact .channel {
  position: relative;
  margin-top: 16px;
  padding: 16px 18px 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(14, 22, 38, .95), rgba(7, 11, 22, .9));
  overflow: hidden;
  transition: border-color .18s ease, transform .18s ease;
}

.page-contact .channel::after {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 2px;
  border-radius: 2px;
  background: var(--cyan);
}

.page-contact .channel--orange::after { background: var(--orange); }
.page-contact .channel--sand::after { background: var(--sand); }

.page-contact .channel:hover {
  border-color: #26385a;
  transform: translateX(2px);
}

.page-contact .channel__label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-size: 12.5px;
  letter-spacing: .14em;
  color: var(--muted);
}

.page-contact .channel__icon {
  display: inline-flex;
  color: var(--cyan);
}

.page-contact .channel--orange .channel__icon { color: var(--orange); }
.page-contact .channel--sand .channel__icon { color: var(--sand); }

.page-contact .channel__value {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(14px, 2.4vw, 16.5px);
  letter-spacing: .01em;
  line-height: 1.55;
  color: var(--bright);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.page-contact .channel__value--addr {
  font-family: var(--font-body);
  font-size: 15px;
  letter-spacing: 0;
  line-height: 1.7;
}

.page-contact .channel__use {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .channel__more {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
}

.page-contact .channel__more summary {
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--sand);
}

.page-contact .channel__more summary::-webkit-details-marker { display: none; }
.page-contact .channel__more summary::after { content: " +"; }
.page-contact .channel__more[open] summary::after { content: " −"; }

.page-contact .channel__more p {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---- 咨询准备 ---- */

.page-contact .prepare-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 30px);
  margin-top: 26px;
  align-items: start;
}

@media (min-width: 780px) {
  .page-contact .prepare-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 244px);
  }
}

.page-contact .checklist {
  list-style: none;
  counter-reset: pc-item;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

@media (min-width: 560px) and (max-width: 999px) {
  .page-contact .checklist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-contact .checklist li {
  position: relative;
  counter-increment: pc-item;
  padding: 12px 16px 12px 48px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: rgba(14, 22, 38, .55);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text);
}

.page-contact .checklist li::before {
  content: counter(pc-item, decimal-leading-zero);
  position: absolute;
  left: 15px;
  top: 13px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--cyan);
}

.page-contact .checklist strong {
  font-weight: 600;
  color: var(--bright);
}

.page-contact .prepare-media {
  margin: 0;
}

.page-contact .prepare-note {
  margin: 22px 0 0;
  padding: 14px 16px;
  border-left: 2px solid var(--line);
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .prepare-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(36, 245, 192, .35);
}

.page-contact .prepare-note a:hover {
  border-bottom-color: var(--cyan);
}

/* ---- 诉求分流 ---- */

.page-contact .quad-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: 22px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

@media (min-width: 780px) {
  .page-contact .quad-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-contact .quad {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(20px, 3vw, 30px);
  background: var(--ink-900);
  transition: background .2s ease;
}

.page-contact .quad:hover {
  background: var(--ink-800);
}

.page-contact .quad .chip {
  align-self: flex-start;
}

.page-contact .quad__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  font-weight: 800;
  letter-spacing: -.01em;
  line-height: 1.35;
  color: var(--bright);
}

.page-contact .quad__body {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text);
}

.page-contact .quad__need {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .02em;
  line-height: 1.75;
  color: var(--muted);
}

/* ---- 后续沟通 ---- */

.page-contact .response-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 46px);
  align-items: start;
}

@media (min-width: 900px) {
  .page-contact .response-grid {
    grid-template-columns: minmax(0, .74fr) minmax(0, 1.26fr);
  }
}

.page-contact .steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .step {
  position: relative;
  margin-left: 15px;
  padding: 0 0 26px 30px;
  border-left: 1px solid var(--line);
}

.page-contact .step:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-contact .step__num {
  position: absolute;
  left: -16px;
  top: -2px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--ink-800);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--cyan);
}

.page-contact .step__title {
  margin: 0;
  padding-top: 4px;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--bright);
}

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

.page-contact .step__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(36, 245, 192, .35);
}

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

.page-contact .contact-foot {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  align-items: center;
  justify-content: space-between;
  margin-top: 8px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .contact-foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(36, 245, 192, .35);
  white-space: nowrap;
}

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

/* ---- 小屏收束 ---- */

@media (max-width: 480px) {
  .page-contact .hero-actions .btn {
    flex: 1 1 auto;
    text-align: center;
  }

  .page-contact .channel {
    padding: 14px 14px 16px 18px;
  }

  .page-contact .checklist li {
    padding: 12px 14px 12px 44px;
  }

  .page-contact .quad__need {
    font-size: 11.5px;
  }
}

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

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