/* ===== 取得联系页 · page-contact ===== */

.page-contact {
  --channel-bg: rgba(244, 241, 234, 0.045);
  --channel-bg-hover: rgba(0, 229, 199, 0.07);
  --scope-yes: rgba(0, 163, 140, 0.08);
  --scope-no: rgba(138, 133, 120, 0.1);
}

.page-contact .contact-crumb {
  padding-top: clamp(16px, 3.4vw, 32px);
  padding-bottom: clamp(4px, 1vw, 10px);
}

/* ---------- 首屏框景 ---------- */

.page-contact .contact-entry {
  padding-top: clamp(26px, 4.6vw, 48px);
}

.page-contact .contact-entry__grid {
  display: grid;
  gap: clamp(28px, 5vw, 56px);
  align-items: start;
}

.page-contact .contact-entry__title {
  font-size: clamp(32px, 6.4vw, 64px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 300;
  margin: 14px 0 18px;
  color: var(--paper);
  text-wrap: balance;
}

.page-contact .contact-entry__lede {
  max-width: 46ch;
  color: var(--paper-80);
}

.page-contact .contact-entry__figure {
  margin: 0;
  position: relative;
  padding: 12px;
  border: 1px solid var(--hair-dark);
  border-radius: var(--radius-lg);
}

.page-contact .contact-entry__figure::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(150deg, var(--cyan), transparent 42%, transparent 60%, var(--orange));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  opacity: 0.55;
  pointer-events: none;
}

.page-contact .contact-entry__figure .figure__frame {
  border-radius: calc(var(--radius-lg) - 14px);
  overflow: hidden;
  background: linear-gradient(150deg, var(--indigo-600), var(--indigo-950) 72%);
}

.page-contact .contact-entry__figure .figure__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-contact .contact-entry__figure .figure__caption {
  padding: 12px 4px 2px;
}

/* ---------- 入场指引三步 ---------- */

.page-contact .contact-steps {
  list-style: none;
  margin: clamp(24px, 3.6vw, 34px) 0 0;
  padding: 0;
  border-top: 1px solid var(--hair-dark);
}

.page-contact .contact-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--hair-dark);
}

.page-contact .contact-step__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  padding-top: 4px;
}

.page-contact .contact-step__text {
  font-size: 16px;
  line-height: 1.7;
  color: var(--paper-60);
}

.page-contact .contact-step__text strong {
  display: block;
  color: var(--paper);
  font-weight: 600;
  letter-spacing: -0.005em;
  margin-bottom: 2px;
}

/* ---------- 三条渠道 ---------- */

.page-contact .channels {
  margin-top: clamp(40px, 6vw, 76px);
  padding-top: clamp(30px, 4.6vw, 52px);
  border-top: 1px solid var(--hair-dark);
}

.page-contact .channels__title {
  margin: 0 0 clamp(22px, 3.4vw, 36px);
  color: var(--paper);
}

.page-contact .channels__grid {
  display: grid;
  gap: clamp(24px, 3.4vw, 48px);
}

.page-contact .channel {
  position: relative;
  display: grid;
  align-content: start;
  gap: 8px;
  padding: 26px 24px 30px;
  border: 1px solid var(--hair-dark);
  border-radius: var(--radius);
  background: var(--channel-bg);
  overflow: hidden;
  transition: border-color 240ms var(--ease), background-color 240ms var(--ease), transform 280ms var(--ease);
}

.page-contact .channel::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--cyan), var(--orange));
}

.page-contact .channel:hover {
  border-color: rgba(0, 229, 199, 0.4);
  background: var(--channel-bg-hover);
  transform: translateY(-3px);
}

.page-contact .channel__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-contact .channel__name {
  margin: 0;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.012em;
  line-height: 1.3;
  color: var(--paper);
}

.page-contact .channel__value {
  margin: 2px 0 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(14px, 1.4vw, 16px);
  line-height: 1.55;
  letter-spacing: 0.01em;
  color: var(--orange);
  overflow-wrap: anywhere;
}

.page-contact .channel__note {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--warm-gray);
}

/* ---------- 深浅底之间的橙色细带 ---------- */

.page-contact .contact-seam {
  position: relative;
  height: 16px;
  background: linear-gradient(90deg, var(--orange) 0%, var(--orange-soft) 50%, var(--orange) 100%);
  overflow: hidden;
}

.page-contact .contact-seam__ticks {
  position: absolute;
  inset: 0;
  display: block;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(12, 23, 48, 0.42) 0 2px,
    rgba(12, 23, 48, 0) 2px 28px
  );
}

/* ---------- 邮件要素（米白阅读面） ---------- */

.page-contact .contact-letter {
  padding-top: clamp(46px, 7vw, 88px);
}

.page-contact .letter-grid {
  display: grid;
  gap: clamp(30px, 5vw, 64px);
  align-items: start;
}

.page-contact .letter-copy__title {
  margin: 12px 0 0;
  color: var(--ink);
}

.page-contact .letter-copy__lede {
  margin-top: 16px;
  color: var(--warm-gray);
}

.page-contact .letter-list {
  list-style: none;
  margin: clamp(22px, 3.4vw, 34px) 0 0;
  padding: 0;
}

.page-contact .letter-item {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--hair-light);
}

.page-contact .letter-item:first-child {
  border-top: 1px solid var(--hair-light);
}

.page-contact .letter-item__box {
  width: 19px;
  height: 19px;
  margin-top: 5px;
  border: 1.5px solid var(--cyan-ink);
  border-radius: 5px;
  background:
    linear-gradient(140deg, rgba(0, 163, 140, 0.16), rgba(0, 163, 140, 0) 70%);
}

.page-contact .letter-item__text {
  font-size: 16.5px;
  line-height: 1.7;
  color: var(--ink);
}

.page-contact .letter-item__text strong {
  display: block;
  font-weight: 600;
  letter-spacing: -0.006em;
  margin-bottom: 3px;
}

.page-contact .letter-item__hint {
  display: block;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--warm-gray);
}

.page-contact .letter-count {
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding-left: 16px;
  border-left: 3px solid var(--orange);
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.8;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-contact .letter-figure {
  margin: 0;
}

.page-contact .letter-figure .figure__frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(160deg, var(--indigo-800), var(--indigo-950));
}

.page-contact .letter-figure .figure__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

/* ---------- 受理范围 ---------- */

.page-contact .scope {
  margin-top: clamp(52px, 8vw, 96px);
  padding-top: clamp(34px, 5vw, 56px);
  border-top: 1px solid var(--hair-light);
}

.page-contact .scope__title {
  margin: 12px 0 0;
  color: var(--ink);
  max-width: 22ch;
}

.page-contact .scope-grid {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  margin-top: clamp(26px, 4vw, 42px);
}

.page-contact .scope-col {
  padding: 26px 24px 30px;
  border: 1px solid var(--hair-light);
  border-radius: var(--radius);
}

.page-contact .scope-col--yes {
  background: var(--scope-yes);
}

.page-contact .scope-col--no {
  background: var(--scope-no);
}

.page-contact .scope-col__title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--ink);
}

.page-contact .scope-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 13px;
}

.page-contact .scope-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15.5px;
  line-height: 1.72;
  color: var(--ink);
}

.page-contact .scope-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 9px;
  height: 2px;
  background: var(--cyan-ink);
}

.page-contact .scope-col--no .scope-list li::before {
  background: var(--warm-gray);
}

.page-contact .scope__foot {
  margin: clamp(24px, 3.4vw, 34px) 0 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--warm-gray);
}

.page-contact .scope__foot a {
  color: var(--cyan-ink);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

/* ---------- 备查信息条 ---------- */

.page-contact .contact-stub__title {
  margin: 12px 0 0;
  color: var(--paper);
}

.page-contact .stub-bar {
  margin: clamp(26px, 4vw, 42px) 0 0;
  border-top: 1px solid var(--hair-dark);
}

.page-contact .stub-bar__item {
  padding: 18px 0;
  border-bottom: 1px solid var(--hair-dark);
}

.page-contact .stub-bar__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--cyan);
  margin-bottom: 8px;
}

.page-contact .stub-bar__val {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(14px, 1.3vw, 15.5px);
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .contact-stub__foot {
  margin-top: clamp(24px, 3.6vw, 38px);
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--paper-60);
}

.page-contact .contact-stub__foot a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

/* ---------- 焦点态 ---------- */

.page-contact a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 3px;
}

.page-contact .contact-letter a:focus-visible {
  outline-color: var(--cyan-ink);
}

/* ---------- 响应式 ---------- */

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

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

  .page-contact .stub-bar {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(24px, 4vw, 48px);
  }
}

@media (min-width: 900px) {
  .page-contact .contact-entry__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(36px, 5vw, 64px);
  }

  .page-contact .contact-entry__figure {
    order: 2;
  }

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

  .page-contact .letter-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(40px, 5vw, 72px);
  }
}

@media (min-width: 1100px) {
  .page-contact .stub-bar {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .page-contact .channel,
  .page-contact .scope-col {
    padding: 22px 18px 24px;
    border-radius: var(--radius-s);
  }

  .page-contact .contact-entry__figure {
    padding: 9px;
    border-radius: var(--radius);
  }

  .page-contact .contact-entry__figure .figure__frame {
    border-radius: calc(var(--radius) - 9px);
  }

  .page-contact .contact-step {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel {
    transition: none;
  }

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