/* ===== 联系我们 / page-contact ===== */

.page-contact {
  --pc-cut: 18px;
  --pc-cut-sm: 12px;
  background: var(--ink);
  color: var(--cream);
}

.page-contact .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--silver);
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  padding: 18px 0 0;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding: 22px 0 clamp(34px, 6vw, 62px);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -200px;
  left: -140px;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 106, 26, .17), transparent 66%);
  pointer-events: none;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 1px;
  height: 100%;
  background: linear-gradient(180deg, transparent, var(--line-strong), transparent);
  pointer-events: none;
}

.page-contact .contact-hero__inner {
  position: relative;
  z-index: 1;
}

.page-contact .contact-hero .eyebrow {
  color: var(--orange);
}

.page-contact .contact-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(36px, 8vw, 62px);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--cream);
  max-width: 15ch;
}

.page-contact .contact-hero__lede {
  margin: 18px 0 0;
  max-width: 54ch;
  font-size: clamp(16px, 2vw, 18px);
  line-height: 1.78;
  color: rgba(244, 237, 224, .8);
}

/* ---------- 联系信息条 ---------- */
.page-contact .contact-strip {
  margin-top: clamp(26px, 4vw, 38px);
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(18, 48, 36, .72), rgba(11, 31, 22, .2));
}

.page-contact .contact-strip__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 15px 16px;
  border-bottom: 1px solid var(--line);
}

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

.page-contact .contact-strip__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--silver);
}

.page-contact .contact-strip__v {
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.5;
  color: var(--cream);
  word-break: break-all;
}

.page-contact .contact-strip__act {
  justify-self: start;
}

/* ---------- 首屏按钮 ---------- */
.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- 通道总区 ---------- */
.page-contact .contact-routes {
  padding: clamp(40px, 6vw, 70px) 0 clamp(34px, 5vw, 58px);
}

.page-contact .contact-routes__head {
  max-width: 62ch;
  margin-bottom: clamp(24px, 4vw, 38px);
}

.page-contact .contact-routes__title {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(26px, 4.6vw, 40px);
  line-height: 1.16;
  letter-spacing: -.015em;
  color: var(--cream);
}

.page-contact .contact-routes__intro {
  margin: 14px 0 0;
  font-size: 17px;
  line-height: 1.78;
  color: rgba(244, 237, 224, .76);
}

.page-contact .contact-split {
  display: grid;
  gap: 26px;
}

/* ---------- 覆盖地图块 ---------- */
.page-contact .coverage {
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--pc-cut)), calc(100% - var(--pc-cut)) 100%, 0 100%);
}

.page-contact .coverage__figure {
  margin: 0;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.page-contact .coverage__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1080 / 680;
  object-fit: cover;
}

.page-contact .coverage__body {
  padding: 22px 20px 26px;
}

.page-contact .coverage__title {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(20px, 3vw, 26px);
  line-height: 1.32;
  color: var(--cream);
}

.page-contact .coverage__text {
  margin: 12px 0 0;
  font-size: 16px;
  line-height: 1.76;
  color: rgba(244, 237, 224, .76);
}

.page-contact .coverage__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

/* ---------- 通道卡片 ---------- */
.page-contact .channel-stack {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-contact .channel-card {
  position: relative;
  padding: 22px 20px 24px;
  background: var(--panel);
  border-left: 2px solid var(--orange);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--pc-cut)), calc(100% - var(--pc-cut)) 100%, 0 100%);
  transition: background-color .18s var(--ease);
}

.page-contact .channel-card--mail {
  border-left-color: var(--blue);
  background: linear-gradient(180deg, rgba(61, 123, 255, .07), transparent 42%), var(--panel);
}

.page-contact .channel-card--coop {
  border-left-color: var(--green);
}

.page-contact .channel-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
}

.page-contact .channel-card__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--silver);
  border: 1px solid var(--line-strong);
  padding: 2px 7px;
}

.page-contact .channel-card__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 21px;
  letter-spacing: -.01em;
  color: var(--cream);
}

.page-contact .channel-card__flag {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  padding: 3px 9px;
  white-space: nowrap;
}

.page-contact .channel-card__flag--orange {
  color: var(--orange);
  background: rgba(255, 106, 26, .12);
}

.page-contact .channel-card__flag--green {
  color: var(--green);
  background: rgba(127, 224, 168, .12);
}

.page-contact .channel-card__flag--blue {
  color: var(--blue);
  background: rgba(61, 123, 255, .14);
}

.page-contact .channel-card__scope {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--silver);
}

.page-contact .channel-card__text {
  margin: 10px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(244, 237, 224, .82);
}

.page-contact .channel-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .channel-card__contact {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed var(--line-strong);
}

.page-contact .channel-card__value {
  flex: 1 1 200px;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--cream);
  word-break: break-all;
}

/* ---------- 合作区块（奶油纸白） ---------- */
.page-contact .contact-coop {
  background: var(--cream);
  color: var(--brown);
  padding: clamp(40px, 6vw, 74px) 0;
}

.page-contact .contact-coop .eyebrow {
  color: var(--rust);
}

.page-contact .coop-grid {
  display: grid;
  gap: 28px;
}

.page-contact .coop-title {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(24px, 4.4vw, 38px);
  line-height: 1.18;
  letter-spacing: -.015em;
  color: var(--brown);
  max-width: 18ch;
}

.page-contact .coop-text {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(42, 26, 18, .82);
  max-width: 46ch;
}

.page-contact .coop-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--brown);
}

.page-contact .coop-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 14px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(42, 26, 18, .16);
}

.page-contact .coop-item__no {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5;
  color: var(--rust);
  padding-top: 2px;
}

.page-contact .coop-item__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 18px;
  color: var(--brown);
}

.page-contact .coop-item__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: rgba(42, 26, 18, .8);
}

.page-contact .coop-flow {
  margin-top: clamp(28px, 4vw, 44px);
  padding-top: 20px;
  border-top: 1px dashed rgba(42, 26, 18, .3);
}

.page-contact .coop-flow__label {
  color: rgba(42, 26, 18, .6);
}

.page-contact .coop-flow__list {
  display: grid;
  gap: 12px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.page-contact .coop-flow__step {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: 15.5px;
  line-height: 1.7;
  color: rgba(42, 26, 18, .86);
}

.page-contact .coop-flow__no {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cream);
  background: var(--brown);
  padding: 3px 8px;
}

/* ---------- 响应与覆盖 ---------- */
.page-contact .contact-response {
  padding: clamp(38px, 6vw, 66px) 0 clamp(30px, 4vw, 50px);
}

.page-contact .response-band {
  display: grid;
  gap: 26px;
  padding: 26px 22px 28px;
  background: linear-gradient(140deg, rgba(61, 123, 255, .1), transparent 55%), var(--panel);
  border: 1px solid var(--line);
  border-top: 2px solid var(--blue);
  clip-path: polygon(0 0, calc(100% - var(--pc-cut)) 0, 100% var(--pc-cut), 100% 100%, 0 100%);
}

.page-contact .response-title {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.2;
  letter-spacing: -.015em;
  color: var(--cream);
}

.page-contact .response-text {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(244, 237, 224, .8);
  max-width: 56ch;
}

.page-contact .response-link {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .response-link:hover,
.page-contact .response-link:focus-visible {
  color: var(--orange);
}

.page-contact .response-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .response-fact {
  background: var(--panel-deep);
  padding: 16px 14px;
}

.page-contact .response-fact__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--silver);
}

.page-contact .response-fact__v {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(26px, 4vw, 34px);
  line-height: 1;
  font-weight: 700;
  color: var(--orange);
}

/* ---------- 底部备案条 ---------- */
.page-contact .contact-filing {
  padding: 0 0 34px;
}

.page-contact .filing-fold {
  border-top: 2px solid var(--line-strong);
}

.page-contact .filing-fold__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 16px;
  padding: 12px 0;
  cursor: pointer;
  list-style: none;
}

.page-contact .filing-fold__head::-webkit-details-marker {
  display: none;
}

.page-contact .filing-fold__head:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

.page-contact .filing-fold__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--silver);
}

.page-contact .filing-fold__v {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: rgba(244, 237, 224, .7);
}

.page-contact .filing-fold__body {
  padding: 4px 0 8px;
}

.page-contact .filing-fold__body p {
  margin: 0 0 6px;
  font-size: 13px;
  line-height: 1.72;
  color: rgba(244, 237, 224, .62);
  word-break: break-word;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .contact-strip__row {
    grid-template-columns: 116px minmax(0, 1fr) auto;
    align-items: center;
    gap: 0 18px;
    padding: 17px 22px;
  }

  .page-contact .contact-strip__act {
    justify-self: end;
  }

  .page-contact .coverage__body {
    padding: 26px 26px 30px;
  }

  .page-contact .channel-card {
    padding: 26px 28px 28px;
  }

  .page-contact .response-band {
    padding: 32px 34px 34px;
  }

  .page-contact .coop-flow__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-contact .coop-flow__step {
    flex-direction: column;
    gap: 10px;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-split {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    gap: 34px;
    align-items: start;
  }

  .page-contact .coverage {
    position: sticky;
    top: 96px;
  }

  .page-contact .coop-grid {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    gap: 52px;
  }

  .page-contact .response-band {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
    gap: 40px;
    align-items: center;
  }
}

@media (min-width: 1180px) {
  .page-contact .contact-split {
    grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
    gap: 42px;
  }

  .page-contact .channel-card--coop {
    margin-right: 26px;
  }
}

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