.page-contact {
  --pc-hair: rgba(147, 160, 196, 0.26);
  --pc-hair-soft: rgba(147, 160, 196, 0.14);
  --pc-cyan-dim: rgba(43, 239, 210, 0.16);
  background-color: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: hidden;
}

.page-contact h1,
.page-contact h2,
.page-contact h3 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.16;
  margin: 0;
  color: var(--paper);
}

.page-contact p {
  margin: 0 0 1.1em;
}

.page-contact p:last-child {
  margin-bottom: 0;
}

.page-contact a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 239, 210, 0.35);
  transition: border-color 200ms var(--ease), color 200ms var(--ease);
}

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

.page-contact .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(112px, 15vw, 160px) 0 clamp(48px, 6vw, 76px);
  background:
    radial-gradient(120% 80% at 86% 0%, rgba(255, 90, 31, 0.22) 0%, rgba(255, 90, 31, 0) 58%),
    radial-gradient(90% 70% at 4% 96%, rgba(43, 239, 210, 0.14) 0%, rgba(43, 239, 210, 0) 62%),
    linear-gradient(180deg, #0B1230 0%, #101A40 62%, #0B1230 100%);
  border-bottom: 1px solid var(--pc-hair-soft);
}

.page-contact .contact-hero__texture {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    118deg,
    rgba(194, 84, 47, 0.13) 0 1px,
    transparent 1px 28px
  );
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 76%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 76%);
}

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

.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--slate);
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-contact .breadcrumb a {
  color: var(--paper-dim);
  border-bottom-color: transparent;
}

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

.page-contact .crumb-sep {
  color: rgba(147, 160, 196, 0.55);
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
}

.page-contact .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--slate);
  margin: 0 0 18px;
}

.page-contact .eyebrow--ink {
  color: var(--clay);
}

.page-contact h1 {
  font-size: clamp(34px, 6vw, 56px);
  max-width: 16em;
}

.page-contact .contact-hero__lead {
  margin-top: clamp(18px, 2.4vw, 26px);
  max-width: 46ch;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.8;
  color: var(--paper-dim);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 32px);
}

.page-contact .hero-facts {
  list-style: none;
  margin: clamp(30px, 4vw, 44px) 0 0;
  padding: clamp(18px, 2.4vw, 24px) 0 0;
  border-top: 1px solid var(--pc-hair);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(12px, 2vw, 24px);
}

.page-contact .hero-facts li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.page-contact .hero-facts__num {
  font-size: clamp(26px, 3.4vw, 36px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--cyan);
}

.page-contact .hero-facts__label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--slate);
}

.page-contact .contact-hero__figure {
  border: 1px solid var(--pc-hair);
  border-radius: var(--r-md);
  overflow: hidden;
  margin: 0;
  background: var(--ink-700);
}

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

/* ---------- 通用区块 ---------- */
.page-contact .contact-block {
  padding: clamp(52px, 7vw, 92px) 0;
  border-top: 1px solid var(--pc-hair-soft);
}

.page-contact .block-head {
  max-width: 62ch;
  margin-bottom: clamp(28px, 4vw, 44px);
}

.page-contact .block-head h2 {
  font-size: clamp(26px, 3.6vw, 40px);
}

.page-contact .block-head__note {
  margin-top: 16px;
  color: var(--paper-dim);
  font-size: 16px;
  line-height: 1.8;
}

/* ---------- 四类合作 ---------- */
.page-contact .type-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.2vw, 24px);
}

.page-contact .type-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 46px clamp(18px, 2.4vw, 26px) clamp(20px, 2.4vw, 26px);
  background: linear-gradient(180deg, rgba(22, 31, 69, 0.96) 0%, rgba(16, 24, 54, 0.9) 100%);
  border: 1px solid var(--pc-hair);
  border-radius: var(--r-md);
  transition: border-color 240ms var(--ease), box-shadow 240ms var(--ease);
}

.page-contact .type-card:hover {
  border-color: rgba(43, 239, 210, 0.45);
  box-shadow: inset 0 0 0 1px rgba(43, 239, 210, 0.12), 0 18px 30px -24px rgba(0, 0, 0, 0.9);
}

.page-contact .type-card .file-tab {
  position: absolute;
  top: 0;
  left: 0;
  border-radius: var(--r-md) 0 var(--r-sm) 0;
}

.page-contact .type-card h3 {
  font-size: clamp(20px, 2.4vw, 24px);
  margin-bottom: 14px;
}

.page-contact .type-card__desc {
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper-dim);
}

.page-contact .type-card__who {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: 16px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--pc-hair);
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate);
}

.page-contact .type-card__who .dot {
  margin-top: 7px;
  flex: none;
}

.page-contact .type-card details {
  margin-top: auto;
  padding-top: 18px;
}

.page-contact .type-card summary {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  list-style: none;
  padding: 11px 14px;
  border: 1px solid rgba(43, 239, 210, 0.34);
  border-radius: var(--r-sm);
  font-size: 14px;
  font-weight: 700;
  color: var(--cyan);
  background: rgba(43, 239, 210, 0.06);
  transition: background-color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-contact .type-card summary::-webkit-details-marker {
  display: none;
}

.page-contact .type-card summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
}

.page-contact .type-card details[open] summary::after {
  content: "−";
}

.page-contact .type-card summary:hover {
  background: rgba(43, 239, 210, 0.14);
  border-color: var(--cyan);
}

.page-contact .tick-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .tick-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper-dim);
}

.page-contact .tick-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 7px;
  background: var(--cyan);
  transform: rotate(45deg);
}

/* ---------- 流程 ---------- */
.page-contact .flow-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-contact .flow-step {
  position: relative;
  padding: clamp(18px, 2.4vw, 24px);
  background: linear-gradient(180deg, rgba(22, 31, 69, 0.82) 0%, rgba(11, 18, 48, 0.55) 100%);
  border: 1px solid var(--pc-hair-soft);
  border-radius: var(--r-md);
}

.page-contact .flow-step__num {
  display: block;
  font-size: clamp(26px, 3vw, 32px);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  margin-bottom: 12px;
}

.page-contact .flow-step h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.page-contact .flow-step p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper-dim);
}

.page-contact .flow-step__out {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: 14px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--pc-hair-soft);
  font-size: 13px;
  color: var(--slate);
}

.page-contact .flow-step__out .dot {
  margin-top: 7px;
  flex: none;
}

/* ---------- 联系卡 ---------- */
.page-contact .channel-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 3.4vw, 48px);
  padding: clamp(24px, 3.6vw, 48px);
  background: var(--paper);
  color: var(--black);
  border-radius: var(--r-md);
  border: 1px solid var(--black);
  box-shadow:
    8px 8px 0 -1px var(--ink-700),
    9px 9px 0 0 var(--ink-500),
    0 34px 46px -32px #000;
}

.page-contact .channel-card__intro h2 {
  color: var(--black);
  font-size: clamp(24px, 3.2vw, 34px);
  margin-bottom: 16px;
}

.page-contact .channel-card__intro p {
  font-size: 15px;
  line-height: 1.8;
  color: rgba(10, 13, 24, 0.78);
}

.page-contact .channel-card__intro a {
  color: var(--clay);
  border-bottom-color: rgba(194, 84, 47, 0.45);
}

.page-contact .channel-card__intro a:hover {
  color: var(--black);
  border-bottom-color: var(--black);
}

.page-contact .channel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  align-content: start;
}

.page-contact .channel-item {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-top: 1px solid rgba(10, 13, 24, 0.16);
}

.page-contact .channel-item:first-child {
  border-top: 2px solid var(--black);
  padding-top: 16px;
}

.page-contact .channel-key {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--clay);
}

.page-contact .channel-val {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.5;
  color: var(--black);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.page-contact .channel-val--text {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
}

/* ---------- 材料清单 ---------- */
.page-contact .prep-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.6vw, 28px);
}

.page-contact .prep-col {
  padding: clamp(20px, 2.8vw, 30px);
  background: rgba(22, 31, 69, 0.62);
  border: 1px solid var(--pc-hair);
  border-left: 3px solid var(--orange);
  border-radius: var(--r-md);
}

.page-contact .prep-col h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 19px;
  margin-bottom: 16px;
}

.page-contact .prep-col__mark {
  width: 10px;
  height: 10px;
  background: var(--orange);
  transform: rotate(45deg);
  flex: none;
}

.page-contact .prep-col__mark--cyan {
  background: var(--cyan);
}

.page-contact .prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-contact .prep-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper-dim);
}

.page-contact .prep-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border: 1px solid var(--cyan);
  transform: rotate(45deg);
}

.page-contact .prep-foot {
  margin-top: clamp(22px, 3vw, 32px);
  padding-top: 18px;
  border-top: 1px solid var(--pc-hair-soft);
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 服务范围 ---------- */
.page-contact .scope-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 3.6vw, 48px);
  align-items: start;
}

.page-contact .scope-figure {
  margin: 0;
  border: 1px solid var(--pc-hair);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--ink-700);
}

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

.page-contact .scope-figure figcaption {
  padding: 12px 16px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate);
  border-top: 1px solid var(--pc-hair-soft);
}

.page-contact .scope-copy h2 {
  font-size: clamp(24px, 3.2vw, 36px);
  margin-bottom: 18px;
}

.page-contact .scope-copy p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--paper-dim);
}

.page-contact .scope-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
  border-top: 1px solid var(--pc-hair-soft);
  padding-top: 20px;
}

.page-contact .scope-list li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper-dim);
}

.page-contact .scope-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 9px;
  width: 8px;
  height: 8px;
  background: var(--gold);
  transform: rotate(45deg);
}

/* ---------- 常见问题 ---------- */
.page-contact .faq-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--pc-hair);
}

.page-contact .faq-list details {
  border-bottom: 1px solid var(--pc-hair);
}

.page-contact .faq-list summary {
  display: flex;
  align-items: center;
  gap: 16px;
  cursor: pointer;
  list-style: none;
  padding: 18px 0;
  font-family: var(--font-display);
  font-size: clamp(15px, 1.8vw, 17px);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.5;
  color: var(--paper);
  transition: color 200ms var(--ease);
}

.page-contact .faq-list summary::-webkit-details-marker {
  display: none;
}

.page-contact .faq-list summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--cyan);
  line-height: 1;
}

.page-contact .faq-list details[open] summary::after {
  content: "−";
}

.page-contact .faq-list summary:hover {
  color: var(--cyan);
}

.page-contact .faq-list .details__body {
  padding: 0 0 20px;
  max-width: 70ch;
}

.page-contact .faq-list .details__body p {
  font-size: 14px;
  line-height: 1.85;
  color: var(--paper-dim);
}

/* ---------- 尾段斜切 ---------- */
.page-contact .contact-cta {
  position: relative;
  padding: clamp(60px, 8vw, 100px) 0 clamp(72px, 9vw, 112px);
  overflow: hidden;
}

.page-contact .contact-cta::before {
  content: "";
  position: absolute;
  top: 0;
  left: -8px;
  right: -8px;
  bottom: 0;
  background: linear-gradient(102deg, #FF5A1F 0%, #FF7433 52%, #FFA36B 100%);
  clip-path: polygon(0 3.4vw, 100% 0, 100% calc(100% - 3.4vw), 0 100%);
}

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

.page-contact .contact-cta__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 32px);
  align-items: center;
}

.page-contact .contact-cta__kicker {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: rgba(11, 18, 48, 0.75);
  margin: 0 0 12px;
}

.page-contact .contact-cta h2 {
  color: var(--ink-900);
  font-size: clamp(24px, 3.4vw, 38px);
  max-width: 18em;
}

.page-contact .contact-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-contact .contact-cta .btn--paper {
  border-bottom: none;
}

.page-contact .contact-cta__ghost {
  border: 1px solid rgba(11, 18, 48, 0.55);
  background: transparent;
  color: var(--ink-900);
  border-bottom: 1px solid rgba(11, 18, 48, 0.55);
}

.page-contact .contact-cta__ghost:hover {
  background: rgba(11, 18, 48, 0.12);
  border-color: var(--ink-900);
  color: var(--ink-900);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .type-grid,
  .page-contact .prep-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: end;
  }

  .page-contact .channel-card {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }

  .page-contact .scope-grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: start;
  }

  .page-contact .contact-cta__inner {
    grid-template-columns: minmax(0, 1.2fr) auto;
  }

  .page-contact .contact-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 960px) {
  .page-contact .flow-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(14px, 2vw, 26px);
  }

  .page-contact .flow-step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 46px;
    right: calc(-1 * clamp(7px, 1vw, 13px) - 7px);
    width: 10px;
    height: 10px;
    border-top: 2px solid var(--cyan);
    border-right: 2px solid var(--cyan);
    transform: rotate(45deg);
    opacity: 0.7;
    pointer-events: none;
  }
}

@media (max-width: 560px) {
  .page-contact .hero-facts {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .page-contact .hero-facts li {
    flex-direction: row;
    align-items: baseline;
    gap: 10px;
  }

  .page-contact .hero-facts__num {
    min-width: 2.2em;
  }

  .page-contact .contact-cta::before {
    clip-path: polygon(0 22px, 100% 0, 100% calc(100% - 22px), 0 100%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}