.page-contact {
  --pc-card-pad: clamp(20px, 2.6vw, 32px);
  --pc-step-indent: 28px;
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-contact .shell {
  position: relative;
  z-index: 1;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(20px, 3.4vw, 40px) 0 clamp(40px, 6vw, 84px);
  background:
    radial-gradient(880px 420px at 80% 6%, rgba(79, 216, 232, .10), transparent 62%),
    radial-gradient(620px 340px at 10% 96%, rgba(242, 194, 75, .07), transparent 60%),
    var(--ink);
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(36, 54, 92, .34) 1px, transparent 1px),
    linear-gradient(90deg, rgba(36, 54, 92, .34) 1px, transparent 1px);
  background-size: 76px 76px;
  -webkit-mask-image: radial-gradient(circle at 72% 26%, #000 0%, transparent 72%);
  mask-image: radial-gradient(circle at 72% 26%, #000 0%, transparent 72%);
  pointer-events: none;
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 54px);
  align-items: end;
  margin-top: clamp(18px, 3vw, 34px);
}

.page-contact .contact-hero__lead h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 6.4vw, 66px);
  line-height: 1.05;
  letter-spacing: -.02em;
  color: var(--text);
}

.page-contact .contact-hero__intro {
  margin: 20px 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--muted);
}

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

.page-contact .contact-hero__figure {
  margin: 0;
  border: 1px solid var(--line);
  clip-path: var(--cut);
  background: linear-gradient(160deg, rgba(18, 29, 56, .9), rgba(5, 10, 24, .95));
}

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

.page-contact .contact-hero__figure figcaption {
  padding: 12px 16px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

/* ---------- 联络入口 ---------- */
.page-contact .channels {
  padding: clamp(40px, 6vw, 80px) 0;
  background: var(--ink-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-contact .channels .section-head {
  margin-bottom: clamp(24px, 3.4vw, 44px);
}

.page-contact .channels__grid {
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr;
}

.page-contact .channel-card {
  position: relative;
  padding: var(--pc-card-pad);
  background: var(--ink);
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: hidden;
}

.page-contact .channel-card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(150deg, rgba(79, 216, 232, .06), transparent 52%);
}

.page-contact .channel-card--mail {
  clip-path: var(--cut);
  border-left: 3px solid var(--gold);
}

.page-contact .channel-card--mail::after {
  background: linear-gradient(150deg, rgba(242, 194, 75, .10), transparent 58%);
}

.page-contact .channel-card--phone {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
  border-left: 3px solid var(--cyan);
}

.page-contact .channel-card--addr {
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
  border-left: 3px solid var(--line);
}

.page-contact .channel-card__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0;
  padding-left: 14px;
  position: relative;
}

.page-contact .channel-card__label::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55em;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}

.page-contact .channel-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.7vw, 19px);
  line-height: 1.5;
  word-break: break-word;
}

.page-contact .channel-card__value a {
  color: var(--gold);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 6px;
  text-decoration-color: rgba(242, 194, 75, .42);
  transition: color .2s var(--ease), text-decoration-color .2s var(--ease);
}

.page-contact .channel-card--phone .channel-card__value a {
  color: var(--cyan);
  text-decoration-color: rgba(79, 216, 232, .42);
}

.page-contact .channel-card__value a:hover,
.page-contact .channel-card__value a:focus-visible {
  color: var(--text);
  text-decoration-color: var(--text);
}

.page-contact .channel-card__value--plain {
  color: var(--text);
  font-size: clamp(14px, 1.5vw, 16px);
}

.page-contact .channel-card__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 轮次编号说明 ---------- */
.page-contact .brief {
  padding: clamp(44px, 6vw, 88px) 0;
  background: var(--ink);
}

.page-contact .brief__grid {
  align-items: start;
}

.page-contact .brief__aside h2 {
  margin: 12px 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-contact .brief__aside p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 30em;
}

.page-contact .brief__body .prose {
  margin: 0 0 26px;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
}

.page-contact .brief-spec {
  margin: 0;
  border-top: 1px solid var(--line);
}

.page-contact .brief-spec__row {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .brief-spec__row dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--gold);
}

.page-contact .brief-spec__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .brief__tail {
  margin: 26px 0 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .brief__tail a,
.page-contact .coop__foot a {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 5px;
  text-decoration-color: rgba(79, 216, 232, .38);
}

.page-contact .brief__tail a:hover,
.page-contact .coop__foot a:hover {
  color: var(--text);
  text-decoration-color: var(--text);
}

/* ---------- 处理节奏 ---------- */
.page-contact .flow-section {
  padding: clamp(44px, 6vw, 88px) 0;
  background: linear-gradient(180deg, var(--ink-2) 0%, var(--ink) 100%);
  border-top: 1px solid var(--line);
}

.page-contact .flow-section .section-head {
  margin-bottom: clamp(26px, 4vw, 46px);
}

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

.page-contact .flow__step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--ink-3);
  border-left: 3px solid var(--line);
  clip-path: var(--cut-sm);
  transition: background .25s var(--ease), border-color .25s var(--ease), transform .25s var(--ease);
}

.page-contact .flow__step--gold { border-left-color: var(--gold); }
.page-contact .flow__step--cyan { border-left-color: var(--cyan); }
.page-contact .flow__step--rose { border-left-color: var(--rose); }

.page-contact .flow__step:hover {
  background: #16223f;
  transform: translateX(3px);
}

.page-contact .flow__idx {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--muted);
  line-height: 1.3;
}

.page-contact .flow__step--gold .flow__idx { color: var(--gold); }
.page-contact .flow__step--cyan .flow__idx { color: var(--cyan); }
.page-contact .flow__step--rose .flow__idx { color: var(--rose); }

.page-contact .flow__name {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(18px, 2.1vw, 22px);
  color: var(--text);
  letter-spacing: -.01em;
}

.page-contact .flow__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
  max-width: 40em;
}

.page-contact .flow__more {
  max-height: none;
  opacity: 1;
  overflow: hidden;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
}

.page-contact .flow__more-label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-contact .flow__dot {
  display: none;
}

/* ---------- 清单 ---------- */
.page-contact .checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .checklist li {
  position: relative;
  padding-left: 30px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--muted);
}

.page-contact .checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .42em;
  width: 15px;
  height: 15px;
  border: 1px solid rgba(242, 194, 75, .55);
  background: linear-gradient(135deg, rgba(242, 194, 75, .20), transparent 62%);
  clip-path: var(--cut-sm);
}

.page-contact .checklist--wide {
  margin-top: 22px;
  gap: 12px;
}

.page-contact .checklist--wide li {
  color: var(--text);
  font-size: 15px;
}

/* ---------- 云南本地支持 ---------- */
.page-contact .yunnan {
  padding: clamp(40px, 6vw, 80px) 0;
  background: var(--ink);
}

.page-contact .yunnan__inner {
  display: grid;
  gap: 0;
  border: 1px solid var(--line);
  clip-path: var(--cut);
  overflow: hidden;
  background: linear-gradient(160deg, var(--ink-3) 0%, var(--ink-2) 100%);
}

.page-contact .yunnan__figure {
  margin: 0;
  position: relative;
  min-height: 200px;
}

.page-contact .yunnan__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(5, 10, 24, .10) 0%, rgba(5, 10, 24, .92) 100%);
  pointer-events: none;
}

.page-contact .yunnan__figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .82;
}

.page-contact .yunnan__copy {
  padding: clamp(24px, 3.6vw, 46px);
}

.page-contact .yunnan__copy h2 {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 3vw, 33px);
  line-height: 1.22;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-contact .yunnan__copy > p {
  margin: 0;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.82;
  color: var(--muted);
}

.page-contact .yunnan__note {
  margin-top: 22px !important;
  font-family: var(--font-mono);
  font-size: 11.5px !important;
  letter-spacing: .1em;
  color: var(--muted);
}

/* ---------- 合作与授权 ---------- */
.page-contact .coop {
  padding: clamp(44px, 6vw, 88px) 0 clamp(40px, 5vw, 72px);
  background: var(--ink-2);
  border-top: 1px solid var(--line);
}

.page-contact .coop .section-head {
  margin-bottom: clamp(24px, 3.6vw, 44px);
}

.page-contact .coop__grid {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
}

.page-contact .coop-card {
  padding: var(--pc-card-pad);
  background: var(--ink);
  clip-path: var(--cut-sm);
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-top: 2px solid var(--line);
  transition: border-color .25s var(--ease), background .25s var(--ease);
}

.page-contact .coop-card:hover {
  border-top-color: var(--gold);
  background: #0d1730;
}

.page-contact .coop-card__idx {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--gold);
}

.page-contact .coop-card__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(18px, 2.1vw, 22px);
  color: var(--text);
}

.page-contact .coop-card > p:not(.coop-card__idx) {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--muted);
}

.page-contact .coop-card .checklist {
  margin-top: 4px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
}

.page-contact .coop__foot {
  margin: clamp(26px, 3.6vw, 44px) 0 0;
  max-width: 44em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 收束 ---------- */
.page-contact .signoff {
  padding: 0 0 clamp(48px, 7vw, 96px);
  background: var(--ink-2);
}

.page-contact .signoff__inner {
  border-left: 3px solid var(--gold);
  padding: clamp(20px, 3vw, 30px) clamp(20px, 3vw, 34px);
  background:
    linear-gradient(120deg, rgba(242, 194, 75, .08), transparent 62%),
    var(--ink);
  clip-path: var(--cut);
}

.page-contact .signoff__kicker {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-contact .signoff__text {
  margin: 0;
  max-width: 46em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--text);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .channels__grid {
    grid-template-columns: 1.5fr 1fr;
    grid-template-areas:
      "mail phone"
      "mail addr";
  }
  .page-contact .channel-card--mail { grid-area: mail; }
  .page-contact .channel-card--phone { grid-area: phone; }
  .page-contact .channel-card--addr { grid-area: addr; }

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

  .page-contact .brief-spec__row {
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
  }

  .page-contact .channels__grid {
    grid-template-columns: 1.6fr 1fr 1fr;
    grid-template-areas: "mail phone addr";
    align-items: stretch;
  }

  .page-contact .brief__grid {
    grid-template-columns: minmax(200px, 24%) minmax(0, 1fr);
    gap: clamp(30px, 5vw, 72px);
  }

  .page-contact .flow__step {
    grid-template-columns: 56px minmax(0, 1fr) 14px;
    gap: 20px;
    align-items: center;
  }

  .page-contact .flow__step:nth-child(2) { margin-left: var(--pc-step-indent); }
  .page-contact .flow__step:nth-child(3) { margin-left: calc(var(--pc-step-indent) * 2); }
  .page-contact .flow__step:nth-child(4) { margin-left: calc(var(--pc-step-indent) * 3); }

  .page-contact .flow__more {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
    padding-top: 0;
    border-top-color: transparent;
    transition: max-height .4s var(--ease), opacity .28s var(--ease),
                margin-top .3s var(--ease), padding-top .3s var(--ease);
  }

  .page-contact .flow__step:hover .flow__more,
  .page-contact .flow__step:focus-within .flow__more {
    max-height: 220px;
    opacity: 1;
    margin-top: 14px;
    padding-top: 14px;
    border-top-color: var(--line);
  }

  .page-contact .flow__dot {
    display: block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--line);
    justify-self: end;
    transition: background .25s var(--ease), box-shadow .25s var(--ease);
  }

  .page-contact .flow__step--gold:hover .flow__dot { background: var(--gold); box-shadow: 0 0 0 5px rgba(242, 194, 75, .14); }
  .page-contact .flow__step--cyan:hover .flow__dot { background: var(--cyan); box-shadow: 0 0 0 5px rgba(79, 216, 232, .14); }
  .page-contact .flow__step--rose:hover .flow__dot { background: var(--rose); box-shadow: 0 0 0 5px rgba(255, 77, 126, .14); }

  .page-contact .yunnan__inner {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
    align-items: stretch;
  }

  .page-contact .yunnan__figure::after {
    background: linear-gradient(90deg, rgba(5, 10, 24, .18) 0%, rgba(5, 10, 24, .88) 100%);
  }

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

@media (max-width: 420px) {
  .page-contact .flow__step {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 10px;
  }

  .page-contact .channel-card__value {
    font-size: 14px;
  }
}