.page-contact {
  --contact-surface: #0C2A20;
  --contact-hair: rgba(53, 242, 192, 0.3);
  --contact-soft: rgba(23, 61, 46, 0.55);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
  padding-block-end: clamp(40px, 7vw, 88px);
  overflow-x: hidden;
}

.page-contact h1,
.page-contact h2,
.page-contact h3 {
  margin: 0;
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -0.01em;
}

.page-contact p {
  margin: 0;
}

.page-contact ul,
.page-contact ol,
.page-contact dl {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.page-contact .contact-kicker::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--cyan);
  border-radius: 2px;
}

/* 面包屑 */
.page-contact .breadcrumb {
  padding-block: 18px 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--dim);
}

.page-contact .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.page-contact .breadcrumb a {
  color: var(--dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast), border-color var(--t-fast);
}

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

.page-contact .breadcrumb li + li::before {
  content: "/";
  margin-inline-end: 8px;
  color: var(--line);
}

.page-contact .breadcrumb [aria-current="page"] {
  color: var(--mint);
}

/* 首屏 */
.page-contact .contact-hero {
  padding-block: clamp(16px, 3vw, 32px) clamp(32px, 5vw, 64px);
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}

.page-contact .contact-hero__copy {
  display: grid;
  gap: 18px;
}

.page-contact .contact-hero h1 {
  font-size: clamp(34px, 6.2vw, 66px);
  color: var(--paper);
}

.page-contact .contact-hero__lede {
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--mint);
  max-width: 52ch;
}

.page-contact .contact-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 30px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.page-contact .contact-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.page-contact .contact-hero__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(18px, 2.4vw, 22px);
  color: var(--cyan);
  letter-spacing: -0.01em;
}

.page-contact .contact-hero__facts li span:last-child {
  font-size: 13px;
  color: var(--dim);
}

.page-contact .contact-hero__media {
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  overflow: hidden;
  box-shadow: var(--shadow-lift);
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
  max-width: 100%;
}

.page-contact .contact-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(165deg, rgba(7, 26, 20, 0) 45%, rgba(7, 26, 20, 0.76) 100%);
  pointer-events: none;
}

/* 渠道卡 */
.page-contact .channels {
  padding-block: clamp(28px, 5vw, 56px);
}

.page-contact .channels__head {
  display: grid;
  gap: 12px;
  max-width: 62ch;
  margin-block-end: clamp(20px, 3vw, 32px);
}

.page-contact .channels__head h2,
.page-contact .feedback__head h2,
.page-contact .flow h2,
.page-contact .scope__aside h2,
.page-contact .partner__copy h2 {
  font-size: clamp(24px, 3.6vw, 36px);
}

.page-contact .channels__head p,
.page-contact .feedback__head p {
  font-size: 15px;
  line-height: 1.78;
  color: var(--dim);
}

.page-contact .channel-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 22px 20px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--ink-2), var(--ink-3));
  transition: border-color var(--t-fast), background var(--t-mid);
}

.page-contact .channel-card:hover {
  border-color: var(--cyan);
}

.page-contact .channel-card--primary::before {
  content: "";
  position: absolute;
  inset: -1px -1px auto -1px;
  height: 3px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  background: linear-gradient(90deg, var(--orange), var(--red));
}

.page-contact .channel-card__top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.page-contact .channel-card__label {
  font-size: 16px;
  color: var(--paper);
}

.page-contact .channel-card__flag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--dim);
}

.page-contact .channel-card__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(16px, 2.2vw, 19px);
  line-height: 1.45;
  color: var(--cyan);
  text-decoration: none;
  word-break: break-all;
  transition: color var(--t-fast);
}

.page-contact a.channel-card__value:hover {
  color: var(--yellow);
}

.page-contact .channel-card__value--static {
  color: var(--paper);
  word-break: normal;
}

.page-contact .channel-card__tools {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-contact .contact-copy {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  padding: 8px 15px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background: transparent;
  color: var(--mint);
  cursor: pointer;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast);
}

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

.page-contact .contact-copy[data-copied="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--on-accent);
}

.page-contact .contact-copy:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: 2px;
}

.page-contact .channel-card__chip {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 5px 13px;
  border-radius: var(--radius-pill);
  background: var(--yellow);
  color: var(--on-accent);
}

.page-contact .channel-card__desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--dim);
}

/* 反馈流程 */
.page-contact .flow {
  padding-block: clamp(36px, 6vw, 72px);
  border-block: 1px solid var(--line);
  background: linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 42%, var(--ink) 100%);
}

.page-contact .flow__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
}

.page-contact .flow__aside {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-contact .flow__lede {
  font-size: 15px;
  line-height: 1.82;
  color: var(--dim);
  max-width: 46ch;
}

.page-contact .flow__figure {
  margin: 6px 0 0;
  display: grid;
  gap: 10px;
}

.page-contact .flow__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
}

.page-contact .flow__figure figcaption {
  font-size: 13px;
  line-height: 1.72;
  color: var(--dim);
}

.page-contact .flow-steps {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-contact .flow-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 16px;
  align-items: start;
  min-height: 72px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(12, 42, 32, 0.72);
  transition: border-color var(--t-fast), background var(--t-mid);
}

.page-contact .flow-step:hover {
  border-color: var(--cyan);
  background: var(--contact-soft);
}

.page-contact .flow-step__index {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--contact-hair);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan);
}

.page-contact .flow-step > div {
  display: grid;
  gap: 6px;
}

.page-contact .flow-step h3 {
  font-size: 17px;
  color: var(--paper);
}

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

/* 反馈类型 */
.page-contact .feedback {
  padding-block: clamp(32px, 5vw, 64px);
}

.page-contact .feedback__head {
  display: grid;
  gap: 12px;
  max-width: 64ch;
  margin-block-end: clamp(18px, 3vw, 28px);
}

.page-contact .feedback__list {
  display: grid;
  gap: 12px;
}

.page-contact .fb-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--ink-2);
  transition: border-color var(--t-fast), background var(--t-mid);
}

.page-contact .fb-item[open] {
  border-color: var(--contact-hair);
  background: linear-gradient(180deg, var(--ink-2), var(--ink));
}

.page-contact .fb-item summary {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 18px;
  list-style: none;
  cursor: pointer;
  color: var(--paper);
  font-weight: 700;
  transition: color var(--t-fast);
}

.page-contact .fb-item summary::-webkit-details-marker {
  display: none;
}

.page-contact .fb-item summary:hover {
  color: var(--cyan);
}

.page-contact .fb-item:focus-within {
  border-color: var(--cyan);
}

.page-contact .fb-item__num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan);
}

.page-contact .fb-item__title {
  font-size: 16px;
}

.page-contact .fb-item__hint {
  margin-inline-start: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--dim);
  white-space: nowrap;
}

.page-contact .fb-item[open] .fb-item__hint {
  color: var(--cyan);
}

.page-contact .fb-item__body {
  padding: 0 18px 18px;
}

.page-contact .fb-item__body p {
  font-size: 14px;
  line-height: 1.82;
  color: var(--mint);
  border-inline-start: 2px solid var(--line);
  padding-inline-start: 14px;
}

/* 服务时间与适用范围 */
.page-contact .scope {
  padding-block: clamp(28px, 5vw, 56px);
}

.page-contact .scope__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 4vw, 44px);
}

.page-contact .scope__aside {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-contact .scope__aside p:last-child {
  font-size: 15px;
  line-height: 1.82;
  color: var(--dim);
}

.page-contact .scope__list {
  border-top: 1px solid var(--line);
}

.page-contact .scope__list > div {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .scope__list dt {
  font-size: 15px;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .scope__list dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--dim);
}

/* 运营主体与备案 */
.page-contact .entity {
  padding-block: clamp(16px, 3vw, 34px);
}

.page-contact .entity-band {
  display: grid;
  gap: 18px;
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(100deg, rgba(23, 61, 46, 0.62), rgba(7, 26, 20, 0.24));
}

.page-contact .entity-band__main {
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-contact .entity-band__main h2 {
  font-size: clamp(20px, 2.6vw, 26px);
}

.page-contact .entity-band__main p {
  font-size: 14px;
  line-height: 1.82;
  color: var(--paper);
}

.page-contact .entity-band__meta {
  display: grid;
  gap: 8px;
  align-content: start;
}

.page-contact .entity-band__icp {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--yellow);
}

.page-contact .entity-band__note {
  font-size: 13px;
  line-height: 1.75;
  color: var(--dim);
}

/* 合作与媒体联络 */
.page-contact .partner {
  padding-block: clamp(28px, 5vw, 60px);
}

.page-contact .partner__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 4vw, 40px);
  align-items: start;
}

.page-contact .partner__copy {
  display: grid;
  gap: 16px;
}

.page-contact .partner__copy p:last-of-type {
  font-size: 15px;
  line-height: 1.82;
  color: var(--dim);
}

.page-contact .contact-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 24px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--orange), var(--red));
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: filter var(--t-fast), transform var(--t-fast);
}

.page-contact .contact-link:hover {
  filter: brightness(1.1);
}

.page-contact .contact-link:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: 3px;
}

.page-contact .partner__panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--ink-2);
  overflow: hidden;
}

.page-contact .partner__panel li {
  display: grid;
  gap: 5px;
  padding: 15px 18px;
  border-bottom: 1px solid var(--line);
}

.page-contact .partner__panel li:last-child {
  border-bottom: 0;
}

.page-contact .partner__panel strong {
  font-size: 15px;
  color: var(--paper);
}

.page-contact .partner__panel span {
  font-size: 13px;
  line-height: 1.72;
  color: var(--dim);
}

/* 通道入口 */
.page-contact .lanes {
  padding-block: clamp(20px, 4vw, 44px) 0;
}

.page-contact .lane-list {
  display: grid;
  gap: 10px;
}

.page-contact .lane-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
  padding: 0 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  color: var(--paper);
  font-size: 14px;
  line-height: 1.6;
  text-decoration: none;
  transition: border-color var(--t-fast), color var(--t-fast), background var(--t-fast);
}

.page-contact .lane-list a:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(53, 242, 192, 0.06);
}

.page-contact .lane-list a:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: 2px;
}

.page-contact .lane-arrow {
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--cyan);
  flex: none;
}

@media (min-width: 720px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .scope__list > div {
    grid-template-columns: 150px minmax(0, 1fr);
    align-items: baseline;
    gap: 0 18px;
  }

  .page-contact .entity-band {
    padding: 24px 26px;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

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

  .page-contact .flow__grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  }

  .page-contact .scope__grid {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  }

  .page-contact .entity-band {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    align-items: center;
  }

  .page-contact .partner__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.9fr);
  }

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

  .page-contact .fb-item summary {
    padding: 18px 22px;
  }

  .page-contact .fb-item__body {
    padding: 0 22px 20px 62px;
  }
}

@media (min-width: 1200px) {
  .page-contact .contact-hero__facts {
    gap: 16px 44px;
  }
}

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