.page-contact {
  --pc-hairline: rgba(53, 242, 192, 0.28);
  --pc-soft: rgba(53, 242, 192, 0.06);
  display: block;
  background:
    radial-gradient(1100px 520px at 84% -10%, rgba(53, 242, 192, 0.10), transparent 62%),
    radial-gradient(760px 420px at 4% 22%, rgba(31, 122, 99, 0.16), transparent 68%),
    var(--ink-950);
  color: var(--paper-100);
  font-family: var(--font-mono);
  line-height: 1.75;
  overflow-x: clip;
}

.page-contact .num {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--cyan-400);
}

.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: clamp(16px, 2.6vw, 28px);
  font-size: 0.8125rem;
  color: var(--slate-400);
}

.page-contact .breadcrumb a {
  color: var(--slate-400);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-contact .breadcrumb a:hover,
.page-contact .breadcrumb a:focus-visible {
  color: var(--cyan-200);
  border-bottom-color: var(--cyan-200);
}

.page-contact .breadcrumb [aria-current="page"] {
  color: var(--cyan-400);
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  padding-block: clamp(18px, 3vw, 34px) clamp(38px, 6vw, 72px);
}

.page-contact .contact-hero__inner {
  position: relative;
  display: grid;
  gap: clamp(24px, 3.4vw, 46px);
  align-items: center;
}

.page-contact .contact-hero__net {
  position: absolute;
  top: -3%;
  right: -4%;
  width: min(46%, 420px);
  height: auto;
  opacity: 0.55;
  pointer-events: none;
  z-index: 0;
}

.page-contact .contact-hero__copy {
  position: relative;
  z-index: 1;
  max-width: 62ch;
}

.page-contact .contact-hero h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  font-weight: 900;
  letter-spacing: -0.045em;
  line-height: 1.02;
  color: var(--paper-100);
}

.page-contact .contact-hero .lede {
  margin: 18px 0 0;
  max-width: 56ch;
  font-size: clamp(0.9375rem, 1.6vw, 1.0625rem);
  color: var(--slate-400);
}

.page-contact .hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .hero-facts__item {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line-faint);
  border-radius: var(--radius-pill);
  background: var(--glass-cyan);
  font-size: 0.8125rem;
}

.page-contact .hero-facts__k {
  color: var(--slate-400);
}

.page-contact .hero-facts__v {
  color: var(--paper-100);
}

.page-contact .contact-hero__figure {
  position: relative;
  z-index: 1;
  margin: 0;
  aspect-ratio: 2 / 1;
}

/* ---------- 章节骨架 ---------- */

.page-contact .section {
  padding-block: clamp(42px, 6vw, 84px);
}

.page-contact .section--channels {
  background: linear-gradient(180deg, rgba(10, 28, 23, 0.9), rgba(10, 28, 23, 0));
}

.page-contact .section--correction {
  background: var(--ink-900);
  border-top: 1px solid var(--line-faint);
}

.page-contact .section--response {
  background: linear-gradient(180deg, rgba(18, 67, 58, 0.32), rgba(5, 16, 13, 0));
  border-top: 1px solid var(--line-faint);
}

.page-contact .section-head {
  display: flex;
  align-items: flex-start;
  gap: clamp(14px, 2.2vw, 26px);
  margin-bottom: clamp(24px, 3.4vw, 44px);
}

.page-contact .section-num {
  flex: none;
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 8vw, 4.4rem);
  font-weight: 900;
  line-height: 0.88;
  letter-spacing: -0.05em;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--pc-hairline);
  text-stroke: 1.5px var(--pc-hairline);
}

.page-contact .section-head__text h2 {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.page-contact .prose {
  max-width: 68ch;
  margin: 0 0 18px;
  font-size: 0.9375rem;
  color: var(--slate-400);
}

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

/* ---------- 渠道 ---------- */

.page-contact .channels-grid {
  display: grid;
  gap: clamp(16px, 2.2vw, 28px);
  align-items: start;
}

.page-contact .channels-main {
  display: grid;
  gap: 14px;
}

.page-contact .channel-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 2.6vw, 30px);
  border: 1px solid var(--line-faint);
  border-left: 3px solid var(--jade-500);
  border-radius: var(--radius-l);
  background: var(--glass-cyan);
  transition: border-color var(--t-fast) var(--ease),
    background-color var(--t-fast) var(--ease),
    transform var(--t-fast) var(--ease);
}

.page-contact .channel-card--mail {
  border-left-color: var(--cyan-400);
}

.page-contact .channel-card:hover {
  border-color: var(--cyan-400);
  border-left-color: var(--cyan-400);
  background: var(--glass-strong);
  transform: translateY(-2px);
}

.page-contact .channel-label {
  margin: 0;
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  color: var(--slate-400);
}

.page-contact .channel-value {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.28;
  color: var(--cyan-400);
  text-decoration: none;
  overflow-wrap: anywhere;
  transition: color var(--t-fast) var(--ease), text-shadow var(--t-fast) var(--ease);
}

.page-contact .channel-value--mail {
  font-size: clamp(1.125rem, 3.6vw, 1.875rem);
}

.page-contact .channel-value--tel {
  font-size: clamp(1.5rem, 5.2vw, 2.4rem);
}

.page-contact .channel-value--addr {
  font-size: clamp(0.9375rem, 2.2vw, 1.0625rem);
  color: var(--paper-100);
  font-weight: 400;
  line-height: 1.6;
}

.page-contact a.channel-value:hover,
.page-contact a.channel-value:focus-visible {
  color: var(--cyan-200);
  text-decoration: underline;
  text-underline-offset: 6px;
}

.page-contact .channel-note {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--slate-400);
}

.page-contact .channels-side {
  padding: clamp(20px, 2.6vw, 28px);
  border-radius: var(--radius-l);
  border: 1px solid var(--line-faint);
}

.page-contact .channels-side__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

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

.page-contact .route-list__item {
  display: grid;
  gap: 3px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-faint);
  font-size: 0.875rem;
}

.page-contact .route-list__item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .route-list__k {
  color: var(--paper-100);
  font-weight: 700;
}

.page-contact .route-list__v {
  color: var(--slate-400);
  line-height: 1.65;
}

.page-contact .route-list__v a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 242, 192, 0.35);
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-contact .route-list__v a:hover,
.page-contact .route-list__v a:focus-visible {
  color: var(--cyan-200);
  border-bottom-color: var(--cyan-200);
}

/* ---------- 纠错 ---------- */

.page-contact .correction-grid {
  display: grid;
  gap: clamp(20px, 2.8vw, 34px);
  align-items: start;
}

.page-contact .tmpl {
  margin-top: 22px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: rgba(5, 16, 13, 0.72);
}

.page-contact .tmpl__bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--jade-700);
  border-bottom: 1px solid var(--line-faint);
}

.page-contact .tmpl__dot {
  width: 8px;
  height: 8px;
  flex: none;
  border-radius: 50%;
  background: var(--cyan-400);
  box-shadow: 0 0 0 4px rgba(53, 242, 192, 0.16);
}

.page-contact .tmpl__title {
  margin: 0;
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--cyan-200);
}

.page-contact .tmpl__body {
  margin: 0;
  padding: clamp(16px, 2.4vw, 24px);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.95;
  color: var(--paper-100);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.page-contact .tmpl__k {
  color: var(--cyan-400);
  font-weight: 700;
}

.page-contact .correction-figure {
  margin: 0 0 22px;
}

.page-contact .correction-figure__cap {
  margin: 12px 0 0;
  font-size: 0.8125rem;
  color: var(--slate-400);
}

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

.page-contact .steps__item {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-faint);
  font-size: 0.875rem;
  color: var(--slate-400);
}

.page-contact .steps__item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .steps__n {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--cyan-400);
}

/* ---------- 时效范围 ---------- */

.page-contact .scope-grid {
  display: grid;
  gap: clamp(16px, 2.2vw, 26px);
}

.page-contact .scope-col {
  padding: clamp(20px, 2.6vw, 30px);
  border-radius: var(--radius-l);
  border: 1px solid var(--line-faint);
  background: rgba(10, 28, 23, 0.62);
}

.page-contact .scope-col--in {
  border-top: 3px solid var(--cyan-400);
}

.page-contact .scope-col--out {
  border-top: 3px solid var(--amber-500);
  background: rgba(255, 138, 61, 0.06);
}

.page-contact .scope-col__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-contact .scope-col--out .scope-col__title {
  color: var(--amber-200);
}

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

.page-contact .scope-list li {
  position: relative;
  padding-left: 18px;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--paper-100);
}

.page-contact .scope-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 8px;
  height: 1.5px;
  background: var(--cyan-400);
}

.page-contact .scope-col--out .scope-list li::before {
  background: var(--amber-500);
}

.page-contact .scope-col__foot {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line-strong);
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--slate-400);
}

/* ---------- 投稿与合作 ---------- */

.page-contact .submit-grid {
  display: grid;
  gap: clamp(20px, 2.8vw, 34px);
  align-items: start;
}

.page-contact .submit-side {
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid var(--line-faint);
  border-radius: var(--radius-l);
  background: linear-gradient(150deg, rgba(18, 67, 58, 0.55), rgba(5, 16, 13, 0.4));
}

.page-contact .submit-side__title {
  margin: 0 0 14px;
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  color: var(--cyan-200);
}

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

.page-contact .check-list__item {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 10px;
  align-items: start;
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--paper-100);
}

.page-contact .check-list__item::before {
  content: "";
  width: 9px;
  height: 9px;
  margin-top: 0.5em;
  border: 1.5px solid var(--cyan-400);
  border-radius: 2px;
}

.page-contact .submit-side__note {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line-strong);
  font-size: 0.8125rem;
  line-height: 1.72;
  color: var(--slate-400);
}

/* ---------- 备案条 ---------- */

.page-contact .filing {
  background: var(--jade-700);
  border-top: 3px solid var(--cyan-400);
  padding-block: clamp(26px, 4vw, 44px);
}

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

.page-contact .filing__label {
  margin: 0;
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  color: var(--cyan-200);
}

.page-contact .filing__icp {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.25rem, 4vw, 1.875rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper-100);
  overflow-wrap: anywhere;
}

.page-contact .filing__text {
  margin: 0;
  font-size: 0.875rem;
  color: rgba(232, 242, 238, 0.78);
}

/* ---------- 响应式增强 ---------- */

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

@media (min-width: 900px) {
  .page-contact .channels-grid {
    grid-template-columns: minmax(0, 1.16fr) minmax(0, 0.84fr);
  }

  .page-contact .correction-grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
  }

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

  .page-contact .filing__inner {
    grid-template-columns: auto auto 1fr;
    align-items: baseline;
    gap: 14px 22px;
  }

  .page-contact .filing__text {
    justify-self: end;
    text-align: right;
  }
}

@media (min-width: 980px) {
  .page-contact .contact-hero__inner {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  }
}

@media (max-width: 640px) {
  .page-contact .contact-hero__net {
    top: auto;
    bottom: -6%;
    right: -12%;
    width: 68%;
    opacity: 0.32;
  }

  .page-contact .section-head {
    flex-direction: column;
    gap: 6px;
  }

  .page-contact .section-num {
    font-size: 3rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .channel-value,
  .page-contact .breadcrumb a,
  .page-contact .route-list__v a {
    transition: none;
  }

  .page-contact .channel-card:hover {
    transform: none;
  }
}