.page-contact {
  --pc-hair: rgba(140, 153, 179, 0.18);
  --pc-field: rgba(34, 48, 73, 0.62);
  --pc-callout: rgba(179, 101, 60, 0.16);
  --pc-cyan-glow: rgba(53, 227, 198, 0.20);
  background: var(--c-void);
  color: var(--c-bone);
}

.page-contact .crumb-wrap {
  padding: 22px var(--edge) 0;
}

.page-contact .crumb__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-mist);
}

.page-contact .crumb__list li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--c-steel);
}

.page-contact .crumb__list a {
  color: var(--c-mist);
  text-decoration: none;
}

.page-contact .crumb__list a:hover {
  color: var(--c-cyan);
}

.page-contact .pc-hero {
  padding: 26px var(--edge) 8px;
}

.page-contact .pc-hero__frame {
  position: relative;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: clamp(30px, 5vw, 56px) clamp(22px, 4vw, 52px) clamp(36px, 5vw, 60px);
  border: 1px solid var(--pc-hair);
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 140% at 92% 0%, rgba(255, 106, 43, 0.10) 0%, rgba(10, 16, 32, 0) 58%),
    linear-gradient(158deg, rgba(20, 28, 49, 0.86) 0%, rgba(10, 16, 32, 0.72) 62%, rgba(5, 8, 15, 0.94) 100%);
  overflow: hidden;
}

.page-contact .pc-hero__frame::before,
.page-contact .pc-hero__frame::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  border-style: solid;
  border-color: var(--c-cyan);
  border-width: 0;
}

.page-contact .pc-hero__frame::before {
  top: 14px;
  left: 14px;
  border-top-width: 2px;
  border-left-width: 2px;
}

.page-contact .pc-hero__frame::after {
  right: 14px;
  bottom: 14px;
  border-right-width: 2px;
  border-bottom-width: 2px;
}

.page-contact .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-cyan);
  margin: 0 0 14px;
}

.page-contact h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.4vw, 54px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
  max-width: 20em;
}

.page-contact .lede {
  font-size: clamp(15px, 2vw, 17px);
  line-height: 1.75;
  color: var(--c-mist);
  max-width: 62ch;
  margin: 0 0 26px;
}

.page-contact .pc-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--c-mist);
}

.page-contact .pc-hero__meta-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--pc-hair);
  border-radius: 999px;
  background: rgba(5, 8, 15, 0.42);
}

.page-contact .pc-hero__meta-item:first-child {
  color: var(--c-clay);
  border-color: rgba(179, 101, 60, 0.42);
}

.page-contact .pc-hero__meta-item .num {
  color: var(--c-orange);
}

.page-contact .pc-section {
  padding: clamp(56px, 8vw, 96px) var(--edge);
}

.page-contact .pc-section--feedback {
  padding-top: clamp(44px, 6vw, 72px);
}

.page-contact .pc-section--coop {
  background: linear-gradient(180deg, rgba(20, 28, 49, 0.42) 0%, rgba(10, 16, 32, 0) 100%);
  border-top: 1px solid var(--pc-hair);
  border-bottom: 1px solid var(--pc-hair);
}

.page-contact .pc-section--path {
  background: var(--c-midnight);
  border-bottom: 1px solid var(--pc-hair);
}

.page-contact .pc-section--faq {
  padding-top: clamp(48px, 6vw, 80px);
}

.page-contact .pc-section--more {
  padding: 36px var(--edge) 80px;
  border-top: 1px solid var(--pc-hair);
}

.page-contact .pc-head {
  margin-bottom: 34px;
}

.page-contact .section-index {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: 14px;
  letter-spacing: 0.28em;
  color: var(--c-orange);
  margin: 0 0 12px;
}

.page-contact h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 4vw, 36px);
  line-height: 1.22;
  letter-spacing: -0.015em;
  margin: 0 0 14px;
  max-width: 22em;
}

.page-contact .prose {
  font-size: 16px;
  line-height: 1.78;
  color: var(--c-mist);
  max-width: 60ch;
  margin: 0 0 26px;
}

.page-contact .pc-head .lede {
  margin-bottom: 0;
}

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

/* --- 反馈通道 --- */
.page-contact .pc-feedback {
  display: grid;
  gap: 32px;
}

.page-contact .pc-form {
  display: grid;
  gap: 14px;
  padding: 20px;
  border: 1px solid var(--pc-hair);
  border-radius: var(--r-lg);
  background: var(--pc-field);
}

.page-contact .pc-field {
  display: grid;
  gap: 7px;
}

.page-contact .pc-field__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-mist);
}

.page-contact .pc-field__input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid rgba(140, 153, 179, 0.26);
  border-radius: var(--r-sm);
  background: rgba(5, 8, 15, 0.62);
  color: var(--c-bone);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.5;
  box-sizing: border-box;
  transition: border-color 220ms ease, box-shadow 220ms ease;
}

.page-contact .pc-field__input--area {
  resize: vertical;
  min-height: 96px;
}

.page-contact .pc-field__input:focus,
.page-contact .pc-field__input:focus-visible {
  outline: none;
  border-color: var(--c-cyan);
  box-shadow: 0 0 0 3px var(--pc-cyan-glow);
}

.page-contact .pc-form__foot {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

.page-contact .pc-form__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--c-clay);
  max-width: 44ch;
}

.page-contact .pc-feedback__media {
  margin: 0;
}

.page-contact .media {
  display: block;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--pc-hair);
  background: var(--c-night);
}

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

.page-contact .media--tall img {
  aspect-ratio: 4 / 3;
}

.page-contact .media--wide img {
  aspect-ratio: 3 / 2;
}

.page-contact .media__caption {
  display: block;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-mist);
  border-top: 1px solid var(--pc-hair);
  background: rgba(5, 8, 15, 0.52);
}

/* --- 合作选项卡 --- */
.page-contact .coop-tabs {
  position: relative;
}

.page-contact .coop-tabs__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-contact .coop-tabs__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 26px;
  border-bottom: 1px solid var(--pc-hair);
}

.page-contact .coop-tab {
  padding: 11px 18px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  color: var(--c-mist);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 220ms ease, border-color 220ms ease;
}

.page-contact .coop-tab:hover {
  color: var(--c-bone);
}

.page-contact #coop-content:checked ~ .coop-tabs__bar .coop-tab[for="coop-content"],
.page-contact #coop-data:checked ~ .coop-tabs__bar .coop-tab[for="coop-data"],
.page-contact #coop-channel:checked ~ .coop-tabs__bar .coop-tab[for="coop-channel"] {
  color: var(--c-orange);
  border-bottom-color: var(--c-orange);
}

.page-contact .coop-tabs__panels > .coop-panel {
  display: none;
}

.page-contact #coop-content:checked ~ .coop-tabs__panels > .coop-panel--content,
.page-contact #coop-data:checked ~ .coop-tabs__panels > .coop-panel--data,
.page-contact #coop-channel:checked ~ .coop-tabs__panels > .coop-panel--channel {
  display: grid;
  gap: 14px;
}

.page-contact .coop-panel {
  padding: 24px;
  border: 1px solid var(--pc-hair);
  border-radius: var(--r-md);
  background: rgba(20, 28, 49, 0.66);
}

.page-contact .coop-panel h3 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  margin: 0;
  color: var(--c-bone);
}

.page-contact .coop-panel__intro {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-mist);
  max-width: 66ch;
}

.page-contact .coop-panel__label {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.10em;
  color: var(--c-cyan);
}

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

.page-contact .coop-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--c-bone);
}

.page-contact .coop-list li::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 0;
  width: 8px;
  height: 2px;
  background: var(--c-orange);
}

/* --- 四步路径 --- */
.page-contact .pc-path {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 24px;
}

.page-contact .pc-path__node {
  position: relative;
  padding: 0;
}

.page-contact .pc-path__step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid var(--c-orange);
  background: rgba(10, 16, 32, 0.95);
  color: var(--c-orange);
  font-size: 15px;
  position: relative;
  z-index: 1;
}

.page-contact .pc-path__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  margin: 14px 0 6px;
  color: var(--c-bone);
}

.page-contact .pc-path__body {
  margin: 0 0 8px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--c-mist);
  max-width: 34ch;
}

.page-contact .pc-path__time {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-clay);
}

.page-contact .pc-path__media {
  margin: 40px 0 0;
}

/* --- 联系方式 --- */
.page-contact .pc-contact {
  margin: 0;
  border-top: 1px solid var(--pc-hair);
}

.page-contact .pc-contact__row {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--pc-hair);
  align-items: baseline;
}

.page-contact .pc-contact__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-mist);
}

.page-contact .pc-contact__val {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 16px;
  line-height: 1.55;
  color: var(--c-bone);
  word-break: break-word;
}

.page-contact .pc-contact__note {
  margin: 20px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-clay);
  max-width: 58ch;
}

/* --- 常见问题 --- */
.page-contact .pc-faq {
  margin: 0;
}

.page-contact .pc-faq__item {
  padding: 22px 0;
  border-top: 1px solid var(--pc-hair);
}

.page-contact .pc-faq__item:last-child {
  border-bottom: 1px solid var(--pc-hair);
}

.page-contact .pc-faq dt {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16.5px;
  line-height: 1.5;
  color: var(--c-bone);
  margin-bottom: 9px;
}

.page-contact .pc-faq dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--c-mist);
  max-width: 66ch;
}

/* --- 相关页面 --- */
.page-contact .pc-more__label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-mist);
}

.page-contact .chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border: 1px solid var(--pc-hair);
  border-radius: 999px;
  background: rgba(20, 28, 49, 0.6);
  color: var(--c-bone);
  font-size: 13.5px;
  text-decoration: none;
  transition: border-color 220ms ease, color 220ms ease;
}

.page-contact .chip:hover,
.page-contact .chip:focus-visible {
  border-color: var(--c-cyan);
  color: var(--c-cyan);
}

/* --- 焦点反馈 --- */
.page-contact a:focus-visible,
.page-contact button:focus-visible,
.page-contact label:focus-visible,
.page-contact input:focus-visible,
.page-contact textarea:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 3px;
}

/* --- 响应式 --- */
@media (min-width: 760px) {
  .page-contact .pc-hero {
    padding-top: 34px;
  }

  .page-contact .pc-form {
    grid-template-columns: 1fr 1fr;
    gap: 16px 18px;
    padding: 26px;
  }

  .page-contact .pc-field:nth-child(3),
  .page-contact .pc-field:nth-child(4) {
    grid-column: 1 / -1;
  }

  .page-contact .pc-form__foot {
    grid-column: 1 / -1;
  }

  .page-contact .coop-panel {
    padding: 30px 32px;
  }

  .page-contact .pc-path {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }

  .page-contact .pc-path__node {
    padding: 0 18px;
  }

  .page-contact .pc-path {
    position: relative;
  }

  .page-contact .pc-path::before {
    content: "";
    position: absolute;
    top: 22px;
    left: 44px;
    right: 44px;
    height: 2px;
    background: linear-gradient(90deg, var(--c-orange) 0%, rgba(255, 106, 43, 0.36) 60%, rgba(140, 153, 179, 0.16) 100%);
    z-index: 0;
  }
}

@media (min-width: 1000px) {
  .page-contact .pc-feedback {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }

  .page-contact .pc-hero__frame {
    padding-right: clamp(60px, 8vw, 120px);
  }

  .page-contact .coop-panel {
    grid-template-columns: minmax(0, 5fr) minmax(0, 4fr);
    display: grid;
    gap: 30px;
    align-items: start;
  }

  .page-contact #coop-content:checked ~ .coop-tabs__panels > .coop-panel--content,
  .page-contact #coop-data:checked ~ .coop-tabs__panels > .coop-panel--data,
  .page-contact #coop-channel:checked ~ .coop-tabs__panels > .coop-panel--channel {
    grid-template-columns: minmax(0, 5fr) minmax(0, 4fr);
  }

  .page-contact .coop-panel h3 {
    grid-column: 1 / -1;
  }

  .page-contact .coop-panel__intro {
    grid-column: 1;
  }

  .page-contact .coop-panel__label,
  .page-contact .coop-list {
    grid-column: 2;
  }

  .page-contact .coop-panel__label {
    margin-top: 0;
  }

  .page-contact .pc-contact__row {
    grid-template-columns: 140px 1fr;
    gap: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-field__input,
  .page-contact .coop-tab,
  .page-contact .chip {
    transition: none;
  }
}
</main>