.page-contact {
  background: var(--ink);
  color: var(--ice);
  font-family: var(--sans);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: 1px solid var(--teal);
  background:
    radial-gradient(120% 90% at 88% 6%, rgba(200, 255, 61, 0.1) 0%, transparent 58%),
    linear-gradient(158deg, var(--char) 0%, var(--ink) 52%, #072a21 100%);
}

.page-contact .contact-hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.18;
  filter: saturate(0.5);
  pointer-events: none;
  z-index: -1;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  right: -14%;
  bottom: -26%;
  width: min(72%, 720px);
  aspect-ratio: 1 / 0.78;
  background: linear-gradient(135deg, rgba(200, 255, 61, 0.14) 0%, rgba(155, 107, 255, 0.08) 55%, transparent 78%);
  border-left: 1px solid rgba(200, 255, 61, 0.18);
  transform: rotate(-9deg);
  pointer-events: none;
  z-index: -1;
}

.page-contact .contact-hero-shell {
  position: relative;
  z-index: 1;
  padding-top: clamp(18px, 3vw, 30px);
}

.page-contact .contact-hero-grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  padding: clamp(24px, 4vw, 52px) 0 clamp(38px, 6vw, 76px);
}

.page-contact .contact-hero-main h1 {
  margin: 12px 0 0;
  font-size: clamp(1.85rem, 6vw, 3.35rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
  font-weight: 800;
  max-width: 16em;
}

.page-contact .contact-hero-main .lede {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: clamp(0.95rem, 1.6vw, 1.06rem);
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .service-lamp {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 22px 0 0;
  padding: 9px 14px;
  border: 1px solid var(--teal);
  background: rgba(14, 59, 46, 0.78);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--ice);
}

.page-contact .lamp-dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 3px rgba(200, 255, 61, 0.18);
  animation: pc-pulse 2.4s var(--ease) infinite;
}

@keyframes pc-pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(200, 255, 61, 0.18); }
  50% { box-shadow: 0 0 0 7px rgba(200, 255, 61, 0.05); }
}

.page-contact .contact-channels {
  display: grid;
  gap: 12px;
  margin-top: 26px;
}

.page-contact .channel {
  padding: 16px 18px 18px;
  border: 1px solid var(--teal);
  border-left: 3px solid var(--panel);
  background: linear-gradient(120deg, rgba(14, 59, 46, 0.9), rgba(11, 15, 14, 0.62));
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-contact .channel--mail { border-left-color: var(--lime); }
.page-contact .channel--phone { border-left-color: var(--amber); }

.page-contact .channel:hover {
  transform: translateY(-2px);
  box-shadow: inset 0 0 0 1px rgba(200, 255, 61, 0.26);
}

.page-contact .channel-label {
  display: block;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-contact .channel-value {
  display: block;
  margin-top: 8px;
  font-family: var(--mono);
  font-weight: 700;
  font-size: clamp(1.05rem, 3.4vw, 2.2rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ice);
  overflow-wrap: anywhere;
}

.page-contact .channel-note {
  display: block;
  margin-top: 10px;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 四类来意 ---------- */
.page-contact .contact-hero-cards { align-self: start; }

.page-contact .contact-hero-cards .eyebrow { margin-bottom: 12px; }

.page-contact .inquiry-stack {
  display: grid;
  gap: 10px;
}

.page-contact .inquiry {
  border: 1px solid var(--teal);
  border-left: 3px solid var(--panel);
  background: rgba(11, 15, 14, 0.58);
  transition: background var(--dur) var(--ease);
}

.page-contact .inquiry--lime { border-left-color: var(--lime); }
.page-contact .inquiry--amber { border-left-color: var(--amber); }
.page-contact .inquiry--violet { border-left-color: var(--violet); }
.page-contact .inquiry--coral { border-left-color: var(--coral); }

.page-contact .inquiry[open] { background: rgba(14, 59, 46, 0.72); }

.page-contact .inquiry > summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ice);
}

.page-contact .inquiry > summary::-webkit-details-marker { display: none; }

.page-contact .inquiry > summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
}

.page-contact .inquiry > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--mono);
  font-size: 1rem;
  color: var(--mist);
  transition: color var(--dur) var(--ease);
}

.page-contact .inquiry[open] > summary::after {
  content: "–";
  color: var(--lime);
}

.page-contact .inquiry > summary:hover::after { color: var(--ice); }

.page-contact .inquiry-no {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-contact .inquiry--lime[open] .inquiry-no { color: var(--lime); }
.page-contact .inquiry--amber[open] .inquiry-no { color: var(--amber); }
.page-contact .inquiry--violet[open] .inquiry-no { color: var(--violet); }
.page-contact .inquiry--coral[open] .inquiry-no { color: var(--coral); }

.page-contact .inquiry-body {
  padding: 12px 16px 16px;
  border-top: 1px solid rgba(20, 92, 74, 0.55);
}

.page-contact .inquiry-body p {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .inquiry-body a {
  color: var(--lime);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .inquiry-body ul {
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 6px;
}

.page-contact .inquiry-body li {
  position: relative;
  padding-left: 16px;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--ice);
}

.page-contact .inquiry-body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 6px;
  height: 1px;
  background: var(--lime);
}

/* ---------- 答复时间 ---------- */
.page-contact .reply-band {
  padding: clamp(40px, 7vw, 84px) 0;
  background: linear-gradient(180deg, var(--ink) 0%, #051d17 100%);
  border-bottom: 1px solid var(--teal);
}

.page-contact .reply-band-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-contact .reply-copy h2 {
  margin: 12px 0 0;
  font-size: clamp(1.5rem, 3.6vw, 2.3rem);
  line-height: 1.14;
  letter-spacing: -0.03em;
  font-weight: 800;
  max-width: 14em;
}

.page-contact .reply-copy p {
  margin: 14px 0 0;
  max-width: 32em;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .reply-steps {
  counter-reset: pc-step;
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .reply-steps li {
  display: flex;
  gap: 14px;
  padding: 16px 18px;
  border-left: 2px solid var(--teal);
  background: linear-gradient(90deg, rgba(14, 59, 46, 0.58), rgba(11, 15, 14, 0.34));
}

.page-contact .reply-steps li::before {
  counter-increment: pc-step;
  content: "0" counter(pc-step);
  flex: none;
  width: 26px;
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.55;
  color: var(--lime);
}

.page-contact .step-title {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ice);
}

.page-contact .step-desc {
  margin: 6px 0 0;
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .reply-hint {
  margin: 18px 0 0;
  font-size: 0.84rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .reply-hint a {
  color: var(--lime);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 合作与内容咨询 ---------- */
.page-contact .coop {
  padding: clamp(40px, 7vw, 84px) 0;
  background: var(--char);
  border-bottom: 1px solid var(--teal);
}

.page-contact .coop .section-head h2 {
  margin: 12px 0 0;
  font-size: clamp(1.5rem, 3.6vw, 2.3rem);
  line-height: 1.16;
  letter-spacing: -0.03em;
  font-weight: 800;
  max-width: 18em;
}

.page-contact .coop .section-head .lede {
  margin: 14px 0 0;
  max-width: 44em;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .coop-grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-contact .coop-card {
  position: relative;
  padding: 24px 20px 26px;
  background: linear-gradient(150deg, rgba(14, 59, 46, 0.85), rgba(11, 15, 14, 0.92));
  border: 1px solid var(--teal);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.page-contact .coop-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--lime);
}

.page-contact .coop-card--amber::before { background: var(--amber); }
.page-contact .coop-card--violet::before { background: var(--violet); }

.page-contact .coop-card h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ice);
}

.page-contact .coop-card p {
  margin: 10px 0 0;
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .coop-card ul {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 6px;
}

.page-contact .coop-card li {
  position: relative;
  padding-left: 15px;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--ice);
}

.page-contact .coop-card li::before {
  content: "›";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--lime);
}

.page-contact .coop-foot {
  margin: 22px 0 0;
  font-size: 0.84rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .coop-foot a {
  color: var(--lime);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 地址窄条 ---------- */
.page-contact .reach-strip {
  position: relative;
  overflow: hidden;
  background: linear-gradient(115deg, #041a15 0%, var(--char) 48%, #05231c 100%);
  border-top: 1px solid var(--teal);
}

.page-contact .reach-strip::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--lime) 0 34%, var(--amber) 34% 67%, var(--violet) 67% 100%);
}

.page-contact .reach-strip-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 24px;
  padding: clamp(34px, 5vw, 56px) 0;
}

.page-contact .reach-copy h2 {
  margin: 10px 0 0;
  font-size: clamp(1.2rem, 2.4vw, 1.6rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-weight: 800;
  max-width: 18em;
}

.page-contact .reach-address {
  margin: 14px 0 0;
  font-size: clamp(0.98rem, 2vw, 1.15rem);
  line-height: 1.65;
  font-weight: 700;
  color: var(--ice);
}

.page-contact .reach-note {
  margin: 10px 0 0;
  max-width: 36em;
  font-size: 0.84rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .reach-icp {
  margin: 14px 0 0;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-contact .reach-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 0;
}

.page-contact .reach-links a {
  padding: 6px 12px;
  border: 1px solid var(--teal);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--mist);
  text-decoration: none;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .reach-links a:hover,
.page-contact .reach-links a:focus-visible {
  color: var(--ink);
  background: var(--lime);
  border-color: var(--lime);
}

.page-contact .reach-figure {
  margin: 0;
}

.page-contact .reach-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--teal);
  filter: saturate(0.7);
  opacity: 0.88;
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 760px) {
  .page-contact .coop-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (min-width: 860px) {
  .page-contact .reach-strip-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
    gap: clamp(24px, 4vw, 48px);
  }
}

@media (min-width: 900px) {
  .page-contact .reply-band-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
    gap: clamp(28px, 4vw, 56px);
  }
}

@media (min-width: 920px) {
  .page-contact .contact-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: clamp(32px, 5vw, 72px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .lamp-dot { animation: none; }
  .page-contact .channel,
  .page-contact .inquiry,
  .page-contact .inquiry > summary::after,
  .page-contact .reach-links a { transition: none; }
  .page-contact .channel:hover { transform: none; }
}