.page-contact {
  --cc-gap: clamp(18px, 2.6vw, 32px);
  --cc-pad: clamp(20px, 3vw, 34px);
  --cc-dash: rgba(47, 191, 113, .6);
  background: var(--c-void);
  color: var(--c-paper);
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumbs {
  display: flex;
  align-items: center;
  gap: .55rem;
  padding: 20px 0 4px;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--c-muted);
  text-transform: uppercase;
}

.page-contact .breadcrumbs a {
  color: var(--c-soft);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease);
}

.page-contact .breadcrumbs a:hover,
.page-contact .breadcrumbs a:focus-visible {
  color: var(--c-cyan);
}

.page-contact .breadcrumbs__sep {
  color: var(--c-line);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(26px, 4.6vw, 52px) 0 clamp(44px, 7vw, 84px);
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -10%;
  right: -12%;
  width: min(78vw, 880px);
  height: 118%;
  background: linear-gradient(135deg, rgba(15, 138, 77, .55) 0%, rgba(22, 224, 207, .14) 48%, rgba(122, 92, 255, .12) 74%, transparent 88%);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 66%);
  pointer-events: none;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-line) 22%, var(--c-line) 78%, transparent);
}

.page-contact .contact-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 3.4vw, 44px);
}

.page-contact .contact-hero .display {
  margin: 10px 0 18px;
  font-size: clamp(34px, 6.2vw, 66px);
  line-height: 1.06;
  letter-spacing: -.02em;
  font-weight: 900;
}

.page-contact .contact-hero .lead {
  max-width: 34em;
  margin: 0;
  color: var(--c-soft);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
}

.page-contact .hero-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
  align-self: start;
}

.page-contact .hero-facts li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 14px;
  padding: 15px 18px;
  background: rgba(16, 24, 32, .92);
}

.page-contact .hero-facts__label {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--c-muted);
}

.page-contact .hero-facts__value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 15px;
  color: var(--c-cyan);
}

/* ---------- 区块通用 ---------- */
.page-contact .section {
  padding: clamp(48px, 7vw, 96px) 0;
}

.page-contact .section--tight {
  padding: clamp(34px, 4.4vw, 60px) 0;
}

.page-contact .section__head {
  margin-bottom: clamp(26px, 3.6vw, 46px);
}

.page-contact .section__title {
  margin: 8px 0 12px;
  font-size: clamp(24px, 3.2vw, 36px);
  line-height: 1.2;
  letter-spacing: -.01em;
  font-weight: 900;
}

.page-contact .section__note {
  max-width: 46em;
  margin: 0;
  color: var(--c-muted);
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 渠道对照 ---------- */
.page-contact .section--channels {
  background:
    radial-gradient(circle at 12% 8%, rgba(15, 138, 77, .22), transparent 55%),
    var(--c-void);
}

.page-contact .channel-split {
  position: relative;
  display: grid;
  gap: var(--cc-gap);
}

.page-contact .channel-card {
  position: relative;
  padding: var(--cc-pad);
  background: var(--c-night);
  border: 1px solid var(--c-line);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-contact .channel-card--mail {
  border-top: 3px solid var(--c-cyan);
}

.page-contact .channel-card--phone {
  border-top: 3px solid var(--c-volt);
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  transform: translateY(-5px);
  background: #131d26;
}

.page-contact .channel-card--mail:hover,
.page-contact .channel-card--mail:focus-within {
  border-color: var(--c-cyan);
}

.page-contact .channel-card--phone:hover,
.page-contact .channel-card--phone:focus-within {
  border-color: var(--c-volt);
}

.page-contact .channel-card__title {
  margin: 16px 0 18px;
  font-size: clamp(19px, 2.1vw, 23px);
  line-height: 1.35;
  font-weight: 900;
}

.page-contact .channel-value {
  margin: 0 0 20px;
  padding-bottom: 18px;
  border-bottom: 1px dashed var(--c-line);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(15px, 1.9vw, 20px);
  letter-spacing: .01em;
  color: var(--c-cyan);
  word-break: break-all;
}

.page-contact .channel-card--phone .channel-value {
  color: var(--c-volt);
}

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

.page-contact .channel-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-soft);
}

.page-contact .channel-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 9px;
  height: 2px;
  background: var(--c-turf);
}

.page-contact .channel-tip {
  margin: 20px 0 0;
  padding: 12px 14px;
  background: rgba(47, 191, 113, .08);
  border-left: 2px solid var(--c-turf);
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-soft);
}

/* ---------- 服务时段与准备材料 ---------- */
.page-contact .section--prep {
  background: var(--c-night);
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}

.page-contact .prep-grid {
  display: grid;
  gap: clamp(26px, 3.4vw, 46px);
}

.page-contact .prep-media {
  position: relative;
  margin: 0;
  overflow: hidden;
  background: var(--c-void);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}

.page-contact .prep-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 4;
  object-fit: cover;
  filter: saturate(.86) contrast(1.05);
}

.page-contact .prep-body .annotation {
  margin: 0;
}

.page-contact .prep-lead {
  max-width: 44em;
  margin: 0 0 26px;
  color: var(--c-soft);
  font-size: 15px;
  line-height: 1.85;
}

.page-contact .prep-subtitle {
  margin: 0 0 18px;
  font-size: clamp(16px, 1.6vw, 18px);
  font-weight: 900;
  letter-spacing: .01em;
  color: var(--c-paper);
}

.page-contact .prep-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-contact .prep-steps li {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--c-line);
}

.page-contact .prep-steps li:last-child {
  border-bottom: 1px solid var(--c-line);
}

.page-contact .prep-steps__num {
  font-size: 15px;
  color: var(--c-turf);
}

.page-contact .prep-steps__title {
  margin: 0 0 5px;
  font-size: 15px;
  font-weight: 700;
  color: var(--c-paper);
}

.page-contact .prep-steps__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-muted);
}

.page-contact .prep-note {
  margin: 22px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-soft);
}

.page-contact .prep-note a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(22, 224, 207, .45);
}

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

/* ---------- 办公地址 ---------- */
.page-contact .section--address {
  background:
    linear-gradient(180deg, rgba(7, 12, 16, 0) 0%, rgba(15, 138, 77, .1) 100%),
    var(--c-void);
}

.page-contact .address-grid {
  display: grid;
  gap: var(--cc-gap);
  align-items: center;
}

.page-contact .address-map {
  position: relative;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: var(--c-night);
  border: 1px solid var(--c-line);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}

.page-contact .address-map img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-contact .address-map .media-frame__caption {
  display: block;
  padding: 12px 18px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--c-muted);
  border-top: 1px solid var(--c-line);
}

.page-contact .address-label {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--c-turf);
}

.page-contact .address-line {
  margin: 0 0 26px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--c-line);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(17px, 2.1vw, 22px);
  line-height: 1.55;
  letter-spacing: .01em;
  color: var(--c-paper);
  word-break: break-word;
}

.page-contact .address-ways {
  margin: 0;
  display: grid;
  gap: 16px;
}

.page-contact .address-ways__item {
  display: grid;
  gap: 6px;
}

.page-contact .address-ways__item dt {
  font-size: 14px;
  font-weight: 700;
  color: var(--c-cyan);
  letter-spacing: .02em;
}

.page-contact .address-ways__item dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-soft);
}

/* ---------- 合作与投稿 ---------- */
.page-contact .section--coop {
  background: var(--c-night);
  border-top: 1px solid var(--c-line);
}

.page-contact .coop-grid {
  display: grid;
  gap: var(--cc-gap);
}

.page-contact .coop-card {
  position: relative;
  padding: var(--cc-pad);
  background: rgba(7, 12, 16, .72);
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-pitch);
  transition: border-left-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-contact .coop-card:hover,
.page-contact .coop-card:focus-within {
  border-left-color: var(--c-cyan);
  transform: translateY(-4px);
}

.page-contact .coop-card__no {
  margin: 0 0 12px;
  font-size: 26px;
  color: var(--c-pitch);
}

.page-contact .coop-card__title {
  margin: 0 0 12px;
  font-size: clamp(18px, 1.9vw, 21px);
  font-weight: 900;
}

.page-contact .coop-card__text {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-soft);
}

.page-contact .coop-card__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.page-contact .coop-card__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-muted);
}

.page-contact .coop-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .7em;
  width: 8px;
  height: 1px;
  background: var(--c-turf);
}

/* ---------- 延伸入口 ---------- */
.page-contact .section--links {
  border-top: 1px solid var(--c-line);
}

.page-contact .links-title {
  margin: 0 0 20px;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--c-muted);
  font-weight: 400;
}

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

.page-contact .links-row .link-arrow {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 20px;
  background: var(--c-night);
  border: 1px solid var(--c-line);
  color: var(--c-paper);
  text-decoration: none;
  font-size: 15px;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .links-row .link-arrow:hover,
.page-contact .links-row .link-arrow:focus-visible {
  border-color: var(--c-cyan);
  color: var(--c-cyan);
}

/* ---------- 备案信息 ---------- */
.page-contact .section--filing {
  padding-bottom: clamp(56px, 7vw, 100px);
}

.page-contact .filing {
  max-width: 640px;
  padding: 20px 22px;
  border: 1px solid var(--c-line);
  display: grid;
  gap: 10px;
}

.page-contact .filing__title {
  margin: 0 0 4px;
  font-size: 12px;
  letter-spacing: .18em;
  font-weight: 400;
  color: var(--c-muted);
}

.page-contact .filing__line {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  font-size: 13.5px;
}

.page-contact .filing__key {
  color: var(--c-muted);
}

.page-contact .filing__val {
  color: var(--c-soft);
  font-size: 13.5px;
}

.page-contact .filing__note {
  margin: 6px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--c-muted);
}

.page-contact .filing__note a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(22, 224, 207, .4);
}

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

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

/* ---------- 大屏 ---------- */
@media (min-width: 960px) {
  .page-contact .contact-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-contact .channel-split {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(44px, 6vw, 88px);
  }

  .page-contact .channel-split::before {
    content: "";
    position: absolute;
    top: 4%;
    bottom: 4%;
    left: 50%;
    border-left: 1px dashed var(--cc-dash);
    transform: translateX(-50%);
    pointer-events: none;
  }

  .page-contact .prep-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
    gap: clamp(34px, 4.6vw, 64px);
  }

  .page-contact .address-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: clamp(34px, 4.6vw, 64px);
  }

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

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