.page-contact {
  padding-top: calc(var(--head-h) + 16px);
  padding-bottom: calc(var(--dock-h) + 56px);
  font-family: var(--font-body);
  color: var(--body-text);
}

.page-contact .breadcrumb__item {
  display: inline;
}

.page-contact .breadcrumb__item span[aria-current="page"] {
  color: var(--paper);
}

/* ---------- 首屏框景 ---------- */
.page-contact .contact-hero {
  margin-top: 22px;
}

.page-contact .contact-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(26px, 4vw, 56px);
  padding: clamp(22px, 3.2vw, 50px);
  border: 1px solid var(--grid);
  background:
    linear-gradient(155deg, rgba(27, 135, 166, 0.16), transparent 42%),
    linear-gradient(342deg, rgba(90, 59, 133, 0.2), transparent 52%),
    var(--ink);
}

.page-contact .contact-hero__grid::before,
.page-contact .contact-hero__grid::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid var(--signal);
  pointer-events: none;
}

.page-contact .contact-hero__grid::before {
  top: -1px;
  left: -1px;
  border-right: none;
  border-bottom: none;
}

.page-contact .contact-hero__grid::after {
  right: -1px;
  bottom: -1px;
  border-top: none;
  border-left: none;
}

.page-contact .contact-hero__lead h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 6vw, 62px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--paper);
  max-width: 15ch;
}

.page-contact .contact-hero__intro {
  margin: 20px 0 0;
  max-width: 52ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--body-text);
}

.page-contact .contact-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-contact .contact-hero__meta {
  display: grid;
  gap: 8px;
  margin: 30px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--grid);
}

.page-contact .contact-hero__meta-row {
  display: grid;
  grid-template-columns: 104px 1fr;
  gap: 12px;
  align-items: baseline;
}

.page-contact .contact-hero__meta dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mute);
}

.page-contact .contact-hero__meta dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--paper);
}

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

.page-contact .contact-hero__media .media-frame {
  width: 100%;
}

.page-contact .contact-hero__media img {
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .media-frame__caption {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--mute);
}

/* ---------- 节段通用 ---------- */
.page-contact .section-head {
  max-width: 62ch;
  margin-bottom: clamp(24px, 3vw, 40px);
}

.page-contact .section-head--tight {
  margin-bottom: 18px;
}

.page-contact .section-head__note {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mute);
}

.page-contact .text-link {
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 180, 0.4);
}

.page-contact .text-link:hover,
.page-contact .text-link:focus-visible {
  border-bottom-color: var(--signal);
}

.page-contact .copyable {
  user-select: all;
  -webkit-user-select: all;
}

/* ---------- 三条通道 ---------- */
.page-contact .channel-grid {
  display: grid;
  gap: 1px;
  background: var(--grid);
  border: 1px solid var(--grid);
}

.page-contact .channel {
  --accent: var(--cyan);
  position: relative;
  padding: clamp(20px, 2.4vw, 34px) clamp(18px, 2.2vw, 30px) clamp(22px, 2.6vw, 34px);
  background: var(--ink);
  border-top: 3px solid var(--accent);
  transition: background var(--t-hover) var(--ease), transform var(--t-hover) var(--ease);
}

.page-contact .channel--phone {
  --accent: var(--signal);
}

.page-contact .channel--feedback {
  --accent: var(--amber);
}

.page-contact .channel:hover,
.page-contact .channel:focus-within {
  background: var(--ink-2);
  transform: translateY(-2px);
}

.page-contact .channel__index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--accent);
}

.page-contact .channel__name {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 2.2vw, 26px);
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-contact .channel__value {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.6vw, 19px);
  line-height: 1.4;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .channel__desc {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--body-text);
}

.page-contact .channel__list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-contact .channel__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--mute);
}

.page-contact .channel__list li::before {
  content: "";
  position: absolute;
  top: 9px;
  left: 0;
  width: 8px;
  height: 1px;
  background: var(--accent);
}

.page-contact .channel__hint {
  margin: 20px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--grid);
  font-size: 13px;
  line-height: 1.65;
  color: var(--mute);
  transition: color var(--t-hover) var(--ease);
}

.page-contact .channel:hover .channel__hint,
.page-contact .channel:focus-within .channel__hint {
  color: var(--paper);
}

/* ---------- 反馈流程 ---------- */
.page-contact .flow-layout {
  display: grid;
  gap: clamp(28px, 4vw, 60px);
}

.page-contact .flow-intro__text {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--body-text);
  max-width: 46ch;
}

.page-contact .flow {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .flow__step {
  position: relative;
  margin-left: 19px;
  padding: 0 0 30px 44px;
  border-left: 1px solid var(--grid);
}

.page-contact .flow__step:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-contact .flow__step::before {
  counter-increment: none;
  content: "";
}

.page-contact .flow__step:nth-child(1)::after,
.page-contact .flow__step:nth-child(2)::after,
.page-contact .flow__step:nth-child(3)::after {
  position: absolute;
  top: -2px;
  left: -19px;
  display: grid;
  place-items: center;
  width: 37px;
  height: 37px;
  border: 1px solid var(--amber);
  border-radius: 50%;
  background: var(--ink);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--amber);
}

.page-contact .flow__step:nth-child(1)::after {
  content: "1";
}

.page-contact .flow__step:nth-child(2)::after {
  content: "2";
}

.page-contact .flow__step:nth-child(3)::after {
  content: "3";
}

.page-contact .flow__title {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 1.9vw, 22px);
  color: var(--paper);
}

.page-contact .flow__step p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--body-text);
}

/* ---------- 合作对接 ---------- */
.page-contact .coop__media {
  margin: 0 0 clamp(24px, 3vw, 36px);
}

.page-contact .coop__media .media-frame {
  width: 100%;
}

.page-contact .coop__media img {
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .coop-list {
  border-bottom: 1px solid var(--grid);
}

.page-contact .coop-item {
  border-top: 1px solid var(--grid);
}

.page-contact .coop-item__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding: 20px 0;
  cursor: pointer;
  list-style: none;
  transition: color var(--t-hover) var(--ease);
}

.page-contact .coop-item__summary::-webkit-details-marker {
  display: none;
}

.page-contact .coop-item__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--amber);
  transition: transform var(--t-hover) var(--ease);
}

.page-contact .coop-item[open] .coop-item__summary::after {
  content: "−";
}

.page-contact .coop-item__summary:hover .coop-item__name,
.page-contact .coop-item__summary:focus-visible .coop-item__name {
  color: var(--signal);
}

.page-contact .coop-item__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--mute);
}

.page-contact .coop-item__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.1vw, 25px);
  color: var(--paper);
  transition: color var(--t-hover) var(--ease);
}

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

.page-contact .coop-item__body {
  padding: 0 0 24px 22px;
  border-left: 2px solid var(--amber);
  margin: 0 0 4px;
}

.page-contact .coop-item__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--body-text);
  max-width: 68ch;
}

.page-contact .coop-item__need {
  margin-top: 12px !important;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--mute);
}

.page-contact .coop__note {
  margin: 24px 0 0;
  padding: 16px 20px;
  border-left: 2px solid var(--cyan);
  background: var(--ink-2);
  font-size: 14px;
  line-height: 1.75;
  color: var(--body-text);
}

/* ---------- 回复节奏 ---------- */
.page-contact .cadence {
  display: grid;
  gap: clamp(26px, 3.4vw, 48px);
  padding-top: clamp(20px, 3vw, 34px);
  border-top: 1px solid var(--grid);
}

.page-contact .cadence__text {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--body-text);
  max-width: 46ch;
}

.page-contact .cadence__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--grid);
  border: 1px solid var(--grid);
}

.page-contact .cadence__item {
  padding: 20px clamp(16px, 2vw, 24px);
  background: var(--ink);
}

.page-contact .cadence__time {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-contact .cadence__item p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--body-text);
}

.page-contact .cadence__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

/* ---------- 地址与备案 ---------- */
.page-contact .info-band {
  border: 1px solid var(--grid);
  background: var(--ink-2);
}

.page-contact .info-band__row {
  display: grid;
  gap: 6px;
  padding: 16px clamp(16px, 2vw, 26px);
  border-bottom: 1px solid var(--grid);
}

.page-contact .info-band__row:last-child {
  border-bottom: none;
}

.page-contact .info-band__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mute);
}

.page-contact .info-band__val {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
  overflow-wrap: anywhere;
}

/* ---------- 收尾引导 ---------- */
.page-contact .next-band {
  display: grid;
  gap: 22px;
  padding: clamp(24px, 3.4vw, 44px);
  border: 1px solid var(--grid);
  background:
    linear-gradient(120deg, rgba(27, 135, 166, 0.14), transparent 58%),
    var(--ink-2);
}

.page-contact .next-band__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.15;
  color: var(--paper);
}

.page-contact .next-band__copy p {
  margin: 14px 0 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--body-text);
}

.page-contact .next-band__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .contact-hero__meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-contact .contact-hero__meta-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .page-contact .info-band__row {
    grid-template-columns: 180px 1fr;
    align-items: baseline;
    gap: 20px;
  }

  .page-contact .next-band {
    grid-template-columns: 1fr auto;
    align-items: center;
  }

  .page-contact .cadence {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    align-items: start;
  }
}

@media (min-width: 940px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: end;
  }

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

  .page-contact .flow-layout {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
  }
}

@media (max-width: 480px) {
  .page-contact .contact-hero__meta-row {
    grid-template-columns: 96px 1fr;
  }

  .page-contact .channel__value {
    font-size: 14px;
  }

  .page-contact .coop-item__summary::after {
    font-size: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .channel__hint,
  .page-contact .coop-item__name,
  .page-contact .coop-item__summary::after {
    transition: none;
  }

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