.page-contact {
  --contact-gap: clamp(20px, 3vw, 40px);
  --contact-rule: 1px solid var(--turf-line);
}

.page-contact .breadcrumb {
  padding-top: clamp(20px, 3vw, 34px);
  padding-bottom: clamp(8px, 1.5vw, 16px);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-intro {
  padding-bottom: clamp(24px, 4vw, 48px);
}

.page-contact .contact-intro__inner {
  max-width: 860px;
}

.page-contact .contact-intro .display {
  margin: 14px 0 18px;
  font-size: clamp(28px, 4.6vw, 52px);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.page-contact .contact-intro .lede {
  font-family: var(--font-serif);
  font-size: clamp(16px, 1.15vw, 19px);
  line-height: 1.8;
  color: var(--chalk);
  max-width: 62ch;
}

/* ---------- 头图 ---------- */
.page-contact .contact-banner {
  padding: 0 0 clamp(32px, 5vw, 64px);
}

.page-contact .contact-banner__frame {
  overflow: hidden;
  border: var(--contact-rule);
  background: var(--turf-deep);
}

.page-contact .contact-banner__frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 16 / 6;
}

/* ---------- 主体两栏：渠道 + 时段提示 ---------- */
.page-contact .contact-rail {
  padding-top: clamp(32px, 5vw, 72px);
  padding-bottom: clamp(40px, 6vw, 88px);
}

.page-contact .contact-rail__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--contact-gap);
}

.page-contact .section-title {
  font-family: var(--font-display);
  font-size: clamp(20px, 2.2vw, 28px);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--chalk);
  margin: 0 0 10px;
}

.page-contact .section-sub {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.8;
  color: var(--smoke);
  margin: 0 0 clamp(20px, 3vw, 32px);
  max-width: 56ch;
}

/* 渠道清单 */
.page-contact .channel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--contact-rule);
}

.page-contact .channel {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 22px 14px 22px 0;
  border-bottom: var(--contact-rule);
  transition: background var(--t-fast) var(--ease), padding-left var(--t-fast) var(--ease);
}

.page-contact .channel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 30%;
  bottom: 30%;
  width: 2px;
  background: var(--neon-cyan);
  opacity: 0;
  transition: opacity var(--t-fast) var(--ease);
}

.page-contact .channel:hover,
.page-contact .channel:focus-within {
  background: var(--card-slate);
  padding-left: 16px;
}

.page-contact .channel:hover::before,
.page-contact .channel:focus-within::before {
  opacity: 1;
}

.page-contact .channel__key {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan-muted);
}

.page-contact .channel__val {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(15px, 1.5vw, 18px);
  color: var(--chalk);
  word-break: break-word;
  transition: color var(--t-fast) var(--ease);
}

.page-contact .channel:hover .channel__val {
  color: var(--neon-cyan);
}

.page-contact .channel__desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--smoke);
  max-width: 46ch;
}

/* 右侧提示块 */
.page-contact .tip-block {
  position: relative;
  padding: clamp(20px, 2.6vw, 32px);
  background: var(--turf-deep);
  border-left: 2px solid var(--neon-cyan);
}

.page-contact .tip-block__title {
  margin-bottom: 18px;
}

.page-contact .hours__head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 14px;
}

.page-contact .hours__clock {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 600;
  color: var(--neon-cyan);
  letter-spacing: -0.02em;
}

.page-contact .hours__clock--end {
  color: var(--flare-orange);
}

.page-contact .hours__span {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--smoke);
  margin-right: auto;
}

.page-contact .hours__track {
  position: relative;
  height: 6px;
  background: var(--turf-line);
  overflow: hidden;
}

.page-contact .hours__fill {
  position: absolute;
  inset: 0 4.17% 0 37.5%;
  background: linear-gradient(90deg, var(--neon-cyan) 0%, var(--cyan-muted) 70%, var(--flare-soft) 100%);
}

.page-contact .hours__marks {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .hours__marks li {
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--smoke);
}

.page-contact .hours__marks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 1px;
  background: var(--flare-soft);
}

.page-contact .tip-block__divider {
  margin: 22px 0 18px;
  height: 1px;
  background: var(--turf-line);
}

.page-contact .tip-block__sub {
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--flare-orange);
  margin: 0 0 8px;
}

.page-contact .tip-block__text {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--chalk);
  margin: 0;
}

/* ---------- 合作咨询 ---------- */
.page-contact .collab {
  padding-top: clamp(40px, 6vw, 80px);
  padding-bottom: clamp(40px, 6vw, 80px);
}

.page-contact .collab__title {
  margin-bottom: 10px;
}

.page-contact .collab__sub {
  max-width: 60ch;
}

.page-contact .collab-list {
  border-top: var(--contact-rule);
}

.page-contact .collab-item {
  border-bottom: var(--contact-rule);
  transition: background var(--t-fast) var(--ease);
}

.page-contact .collab-item[open] {
  background: var(--card-slate);
}

.page-contact .collab-item__head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 20px 14px 20px 0;
  cursor: pointer;
  list-style: none;
  transition: padding-left var(--t-fast) var(--ease);
}

.page-contact .collab-item__head::-webkit-details-marker {
  display: none;
}

.page-contact .collab-item__head:hover {
  padding-left: 14px;
}

.page-contact .collab-item__idx {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  color: var(--cyan-muted);
}

.page-contact .collab-item__name {
  font-family: var(--font-display);
  font-size: clamp(16px, 1.6vw, 20px);
  letter-spacing: 0.01em;
  color: var(--chalk);
}

.page-contact .collab-item__hint {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--smoke);
  text-transform: uppercase;
}

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

.page-contact .collab-item__body {
  padding: 0 clamp(14px, 2vw, 34px) 24px calc(14px + 1.6em);
}

.page-contact .collab-item__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--smoke);
  max-width: 68ch;
}

/* ---------- 数据反馈 ---------- */
.page-contact .feedback {
  padding-top: clamp(40px, 6vw, 80px);
  padding-bottom: clamp(40px, 6vw, 80px);
}

.page-contact .feedback__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--contact-gap);
}

.page-contact .feedback__lead .section-sub {
  margin-bottom: 0;
}

.page-contact .feedback__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--turf-line);
}

.page-contact .feedback__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 18px 20px;
  background: var(--pitch-ink);
}

.page-contact .feedback__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--flare-soft);
}

.page-contact .feedback__v {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--chalk);
}

.page-contact .feedback__foot {
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding-top: 18px;
  border-top: var(--contact-rule);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--smoke);
}

.page-contact .link-inline {
  color: var(--cyan-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-contact .link-inline:hover,
.page-contact .link-inline:focus-visible {
  color: var(--neon-cyan);
  border-bottom-color: var(--neon-cyan);
}

/* ---------- 服务范围 ---------- */
.page-contact .reach {
  padding-top: clamp(40px, 6vw, 80px);
  padding-bottom: clamp(24px, 4vw, 44px);
}

.page-contact .reach__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--contact-gap);
  align-items: center;
}

.page-contact .reach__text .prose {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--smoke);
  max-width: 60ch;
}

.page-contact .reach__map img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 5 / 3;
  border: var(--contact-rule);
  background: var(--card-slate);
}

.page-contact .reach__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin-top: clamp(28px, 4vw, 48px);
  padding-top: 18px;
  border-top: 1px solid var(--neon-cyan);
}

.page-contact .reach__legal-item {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  color: var(--smoke);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .feedback__grid {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }

  .page-contact .feedback__item {
    grid-template-columns: 10rem 1fr;
    gap: 20px;
  }

  .page-contact .reach__grid {
    grid-template-columns: 6fr 5fr;
  }
}

@media (min-width: 1024px) {
  .page-contact .contact-rail__grid {
    grid-template-columns: 7fr 5fr;
  }

  .page-contact .contact-rail__col--side {
    padding-top: 8px;
  }
}

@media (min-width: 1280px) {
  .page-contact .contact-rail__grid {
    grid-template-columns: 8fr 4fr;
    gap: clamp(40px, 5vw, 72px);
  }
}

@media (max-width: 420px) {
  .page-contact .collab-item__head {
    grid-template-columns: auto 1fr;
    row-gap: 6px;
  }

  .page-contact .collab-item__hint {
    grid-column: 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .channel::before,
  .page-contact .collab-item,
  .page-contact .collab-item__head,
  .page-contact .link-inline {
    transition: none;
  }
}
</main>