.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: clamp(26px, 5vw, 52px) clamp(44px, 8vw, 96px);
  background:
    radial-gradient(110% 80% at 84% 4%, rgba(56, 232, 255, 0.14), transparent 60%),
    radial-gradient(90% 70% at 6% 98%, rgba(138, 107, 255, 0.12), transparent 62%),
    linear-gradient(180deg, var(--ink-900) 0%, var(--ink-800) 100%);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image: linear-gradient(to right, rgba(30, 42, 69, 0.5) 1px, transparent 1px);
  background-size: 120px 100%;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.75), transparent 88%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.75), transparent 88%);
}

.page-contact .contact-hero .breadcrumb {
  margin-bottom: clamp(28px, 5vw, 56px);
}

.page-contact .contact-hero__index {
  color: var(--cyan-400);
  letter-spacing: 0.2em;
  margin: 0;
}

.page-contact .contact-hero__title {
  margin: clamp(16px, 2.6vw, 26px) 0 0;
  font-size: clamp(34px, 7.4vw, 92px);
  font-weight: 300;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--mist-050);
  max-width: 13em;
}

.page-contact .contact-hero__lead {
  margin-top: clamp(20px, 3vw, 34px);
  max-width: 60ch;
  color: var(--slate-400);
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.85;
}

.page-contact .contact-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  margin-top: clamp(26px, 4vw, 42px);
  padding-top: 18px;
  border-top: 1px solid var(--line-700);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--slate-400);
}

.page-contact .contact-hero__meta-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--cyan-400);
  box-shadow: 0 0 10px rgba(56, 232, 255, 0.8);
}

.page-contact .contact-columns {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(40px, 7vw, 76px);
}

.page-contact .contact-col--main {
  min-width: 0;
}

.page-contact .contact-col--side {
  min-width: 0;
  display: grid;
  gap: clamp(22px, 3vw, 34px);
  align-content: start;
}

/* ---- 可咨询范围 ---- */
.page-contact .ask-list {
  list-style: none;
  margin: clamp(30px, 4.4vw, 48px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line-700);
}

.page-contact .ask-item {
  position: relative;
  padding: clamp(22px, 3vw, 34px) 0 clamp(22px, 3vw, 34px) 46px;
  border-bottom: 1px solid var(--line-700);
  transition: background 0.25s var(--ease);
}

.page-contact .ask-item__num {
  position: absolute;
  left: 0;
  top: clamp(24px, 3.2vw, 36px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan-400);
}

.page-contact .ask-item__title {
  margin: 0 0 10px;
  font-size: clamp(18px, 2.1vw, 23px);
  font-weight: 400;
  line-height: 1.5;
  color: var(--mist-050);
}

.page-contact .ask-item__desc {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--slate-400);
}

.page-contact .ask-sample {
  margin: 16px 0 0;
  padding: 10px 0 10px 16px;
  border-left: 2px solid var(--cyan-700);
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist-050);
  opacity: 0.82;
}

/* ---- 联系方式信息块 ---- */
.page-contact .info-block {
  border: 1px solid var(--line-700);
  border-radius: 20px;
  padding: clamp(22px, 3vw, 32px);
  background: linear-gradient(165deg, rgba(11, 18, 38, 0.92), rgba(6, 11, 24, 0.62));
}

.page-contact .info-block__index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan-400);
}

.page-contact .info-block__title {
  margin: 12px 0 0;
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 400;
  line-height: 1.35;
  color: var(--mist-050);
}

.page-contact .info-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
}

.page-contact .info-row {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-top: 1px solid var(--line-700);
}

.page-contact .info-row__label {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan-400);
}

.page-contact .info-row__value {
  font-size: 16px;
  line-height: 1.65;
  color: var(--mist-050);
  word-break: break-word;
}

.page-contact .info-row__hint {
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate-400);
}

.page-contact .info-block__foot {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line-700);
  font-size: 13px;
  line-height: 1.8;
  color: var(--slate-400);
}

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

.page-contact .contact-side-figure .figure__frame {
  border-radius: 18px;
}

/* ---- 处理时段 ---- */
.page-contact .contact-hours {
  background: linear-gradient(180deg, var(--ink-900) 0%, var(--ink-800) 55%, var(--ink-900) 100%);
}

.page-contact .contact-hours__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

.page-contact .contact-hours__text p + p {
  margin-top: 18px;
}

.page-contact .contact-hours__figure {
  margin: 0;
}

.page-contact .contact-hours__figure .figure__frame {
  border-radius: 18px;
}

.page-contact .timeline {
  margin-top: clamp(40px, 6vw, 72px);
  padding-top: clamp(28px, 4vw, 44px);
  border-top: 1px solid var(--line-700);
}

.page-contact .timeline__rail {
  position: relative;
  height: 8px;
  border-radius: 999px;
  background: rgba(30, 42, 69, 0.62);
  overflow: hidden;
}

.page-contact .timeline__window {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 37.5%;
  width: 37.5%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--cyan-700), var(--cyan-400));
  box-shadow: 0 0 22px rgba(56, 232, 255, 0.35);
}

.page-contact .timeline__scale {
  position: relative;
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  height: 56px;
}

.page-contact .timeline__point {
  position: absolute;
  top: 0;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.page-contact .timeline__hour {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cyan-400);
}

.page-contact .timeline__label {
  font-size: 12px;
  line-height: 1.4;
  color: var(--slate-400);
  white-space: nowrap;
}

.page-contact .timeline__point:nth-child(1) {
  left: 0;
  transform: none;
  align-items: flex-start;
}

.page-contact .timeline__point:nth-child(2) {
  left: 37.5%;
}

.page-contact .timeline__point:nth-child(3) {
  left: 75%;
}

.page-contact .timeline__point:nth-child(4) {
  left: auto;
  right: 0;
  transform: none;
  align-items: flex-end;
}

.page-contact .timeline__point:nth-child(1) .timeline__hour,
.page-contact .timeline__point:nth-child(4) .timeline__hour {
  color: var(--slate-400);
  opacity: 0.65;
}

/* ---- 提交建议 ---- */
.page-contact .contact-prepare__intro {
  max-width: 62ch;
}

.page-contact .checklist {
  list-style: none;
  margin: clamp(30px, 4.4vw, 48px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line-700);
}

.page-contact .checklist__item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 16px;
  padding: clamp(20px, 2.8vw, 30px) 0;
  border-bottom: 1px solid var(--line-700);
}

.page-contact .checklist__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--gold-400);
  padding-top: 4px;
}

.page-contact .checklist__title {
  margin: 0 0 8px;
  font-size: clamp(17px, 1.9vw, 21px);
  font-weight: 400;
  line-height: 1.5;
  color: var(--mist-050);
}

.page-contact .checklist__body p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--slate-400);
  max-width: 58ch;
}

/* ---- 互校与合作 ---- */
.page-contact .coop-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 40px);
  margin-top: clamp(28px, 4vw, 44px);
}

.page-contact .coop-card {
  padding: clamp(22px, 3vw, 32px);
  border: 1px solid var(--line-700);
  border-radius: 20px;
  background: linear-gradient(160deg, rgba(6, 43, 51, 0.35), rgba(6, 11, 24, 0.5));
  transition: transform 0.28s var(--ease), border-color 0.28s var(--ease), filter 0.28s var(--ease);
}

.page-contact .coop-card__tag {
  display: inline-block;
  margin: 0;
  transform: none;
}

.page-contact .coop-card__title {
  margin: 16px 0 10px;
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 400;
  line-height: 1.5;
  color: var(--mist-050);
}

.page-contact .coop-card p:last-child {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--slate-400);
}

.page-contact .contact-links {
  margin-top: clamp(36px, 5vw, 56px);
  padding-top: clamp(24px, 3vw, 34px);
  border-top: 1px solid var(--line-700);
}

.page-contact .contact-links__title {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan-400);
}

.page-contact .contact-links__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .contact-links__list a {
  display: inline-block;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--mist-050);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease), padding-left 0.25s var(--ease);
}

.page-contact .contact-links__list a:hover,
.page-contact .contact-links__list a:focus-visible {
  color: var(--cyan-400);
  border-bottom-color: var(--cyan-400);
  padding-left: 8px;
}

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

.page-contact .figure__frame {
  overflow: hidden;
  background: var(--ink-800);
}

/* ---- 响应式 ---- */
@media (min-width: 700px) {
  .page-contact .coop-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .contact-hours__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-contact .contact-links__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 32px;
  }
}

@media (min-width: 980px) {
  .page-contact .contact-columns {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(48px, 6vw, 96px);
  }

  .page-contact .ask-item {
    padding-left: 60px;
  }

  .page-contact .checklist__item {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 24px;
  }
}

@media (max-width: 520px) {
  .page-contact .ask-item {
    padding-left: 38px;
  }

  .page-contact .checklist__item {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 12px;
  }

  .page-contact .timeline__label {
    font-size: 11px;
  }

  .page-contact .timeline__hour {
    font-size: 12px;
  }
}

@media (max-width: 400px) {
  .page-contact .timeline__point:nth-child(2) .timeline__label,
  .page-contact .timeline__point:nth-child(3) .timeline__label {
    display: none;
  }
}