/* ================= 联系入口 · 页面专属样式 ================= */
.page-contact {
  --pc-gap: clamp(20px, 3vw, 34px);
  --pc-pad: clamp(18px, 2.2vw, 28px);
  --pc-edge: 2px solid var(--yf-line);
  background: var(--yf-bg);
  color: var(--yf-ink);
}

.page-contact__crumb {
  padding-top: clamp(14px, 2vw, 24px);
}

/* ---------- 首屏 ---------- */
.page-contact__hero {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 42px);
  padding: clamp(20px, 3vw, 34px) 0 clamp(28px, 4.4vw, 52px);
  border-bottom: 2px solid var(--yf-line);
}

.page-contact__hero-copy {
  min-width: 0;
}

.page-contact__title {
  margin: 14px 0 0;
  font-family: var(--yf-cond);
  font-weight: 200;
  font-size: clamp(34px, 7.4vw, 78px);
  line-height: 1.02;
  letter-spacing: -0.012em;
  color: var(--yf-ink);
  text-wrap: balance;
}

.page-contact__lede {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  max-width: 64ch;
  font-size: clamp(14.5px, 1.5vw, 16.5px);
  line-height: 1.85;
  color: var(--yf-muted);
}

.page-contact__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-contact__signal {
  display: grid;
  place-items: center;
  color: var(--yf-cyan);
}

.page-contact__signal svg {
  width: min(268px, 62vw);
  height: auto;
  overflow: visible;
}

.page-contact__signal-core {
  fill: var(--yf-orange);
}

.page-contact__signal-ring {
  fill: none;
  stroke: var(--yf-cyan);
  stroke-width: 2;
  stroke-dasharray: 6 10;
  opacity: 0.75;
}

.page-contact__signal-ring--dash {
  stroke-dasharray: 3 12;
  opacity: 0.45;
  transform-box: fill-box;
  transform-origin: center;
}

.page-contact__signal-arc {
  fill: none;
  stroke: var(--yf-cyan-soft);
  stroke-width: 3;
  stroke-linecap: round;
}

/* ---------- 章节通用 ---------- */
.page-contact__block {
  scroll-margin-top: calc(var(--yf-header-h) + 20px);
}

/* ---------- 01 联系渠道 ---------- */
.page-contact__console {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pc-gap);
  margin-top: clamp(22px, 3vw, 36px);
}

.page-contact__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  min-width: 0;
}

.page-contact__card {
  position: relative;
  min-width: 0;
  background: var(--yf-panel);
  border: var(--pc-edge);
  padding: var(--pc-pad);
  box-shadow: var(--yf-hard-shadow);
  transition: transform 0.26s var(--yf-ease), border-color 0.26s var(--yf-ease),
    box-shadow 0.26s var(--yf-ease);
}

.page-contact__card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 48px;
  height: 6px;
  background: var(--yf-cyan);
}

.page-contact__card--phone::before {
  background: var(--yf-orange);
}

.page-contact__card--office::before {
  background: var(--yf-amber);
}

.page-contact__card-kicker {
  margin: 0;
  font-family: var(--yf-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--yf-cyan);
}

.page-contact__card--phone .page-contact__card-kicker {
  color: var(--yf-orange);
}

.page-contact__card--office .page-contact__card-kicker {
  color: var(--yf-amber);
}

.page-contact__value {
  display: block;
  margin: 12px 0 0;
  padding-bottom: 12px;
  font-family: var(--yf-mono);
  font-weight: 700;
  font-size: clamp(16px, 4.2vw, 27px);
  line-height: 1.3;
  letter-spacing: -0.005em;
  color: var(--yf-ink);
  border-bottom: 2px solid var(--yf-cyan);
  overflow-wrap: anywhere;
  user-select: all;
}

.page-contact__value--long {
  font-size: clamp(13px, 3.2vw, 17px);
  line-height: 1.6;
  border-bottom-color: var(--yf-line);
}

.page-contact__card-title {
  margin: clamp(14px, 2vw, 20px) 0 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--yf-ink);
}

.page-contact__card-text {
  margin: 9px 0 0;
  font-size: 14px;
  line-height: 1.82;
  color: var(--yf-muted);
}

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

/* ---------- 反馈前准备清单 ---------- */
.page-contact__kit {
  min-width: 0;
  padding: var(--pc-pad);
  border: var(--pc-edge);
  background: linear-gradient(
    165deg,
    var(--yf-deep) 0%,
    var(--yf-panel) 48%,
    var(--yf-panel) 100%
  );
  box-shadow: var(--yf-hard-shadow);
  scroll-margin-top: calc(var(--yf-header-h) + 20px);
}

.page-contact__kit-title {
  margin: 10px 0 0;
  font-family: var(--yf-cond);
  font-weight: 200;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.22;
  letter-spacing: 0.008em;
  color: var(--yf-ink);
}

.page-contact__kit-text {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--yf-muted);
}

.page-contact__checklist {
  display: grid;
  gap: 10px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact__checklist label {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 11px 12px;
  border: 1px solid var(--yf-line);
  background: rgba(255, 255, 255, 0.015);
  cursor: pointer;
  transition: border-color 0.2s var(--yf-ease), background 0.2s var(--yf-ease);
}

.page-contact__checklist label:hover {
  border-color: var(--yf-cyan-soft);
}

.page-contact__checklist input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  margin: 2px 0 0;
  display: grid;
  place-content: center;
  border: 2px solid var(--yf-line);
  background: var(--yf-bg);
  cursor: pointer;
}

.page-contact__checklist input[type="checkbox"]::after {
  content: "";
  width: 10px;
  height: 10px;
  background: var(--yf-cyan);
  transform: scale(0);
  transition: transform 0.18s var(--yf-ease);
}

.page-contact__checklist input[type="checkbox"]:checked {
  border-color: var(--yf-cyan);
}

.page-contact__checklist input[type="checkbox"]:checked::after {
  transform: scale(1);
}

.page-contact__checklist label:has(input:checked) {
  border-color: var(--yf-cyan);
  background: rgba(47, 232, 198, 0.07);
}

.page-contact__checklist label:has(input:checked) strong {
  text-decoration: line-through;
  text-decoration-color: var(--yf-muted);
}

.page-contact__check-body {
  display: block;
  min-width: 0;
}

.page-contact__check-body strong {
  display: block;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--yf-ink);
}

.page-contact__check-body em {
  display: block;
  margin-top: 3px;
  font-style: normal;
  font-size: 12.5px;
  line-height: 1.62;
  color: var(--yf-muted);
}

/* ---------- 配图 ---------- */
.page-contact__figure {
  margin: clamp(24px, 3.4vw, 40px) 0 0;
  border: var(--pc-edge);
  background: var(--yf-panel);
  box-shadow: var(--yf-hard-shadow);
  overflow: hidden;
}

.page-contact__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(0.86) brightness(0.78);
}

.page-contact__figure--band img {
  aspect-ratio: 14 / 9;
}

.page-contact__figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--yf-line);
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--yf-muted);
  background: var(--yf-panel);
}

/* ---------- 02 服务时间 ---------- */
.page-contact__window {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pc-gap);
  margin-top: clamp(22px, 3vw, 36px);
}

.page-contact__note {
  align-self: start;
  padding: var(--pc-pad);
  border: var(--pc-edge);
  border-left: 6px solid var(--yf-orange);
  background: var(--yf-panel);
  box-shadow: var(--yf-hard-shadow);
}

.page-contact__note-num {
  margin: 0;
  font-family: var(--yf-mono);
  font-weight: 700;
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--yf-orange);
  overflow-wrap: anywhere;
}

.page-contact__note-label {
  margin: 10px 0 0;
  font-family: var(--yf-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--yf-muted);
}

.page-contact__note-text {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.82;
  color: var(--yf-muted);
}

/* ---------- 03 到访与邮件 ---------- */
.page-contact__split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pc-gap);
  margin-top: clamp(22px, 3vw, 36px);
}

.page-contact__split-col {
  min-width: 0;
  padding-top: 20px;
  border-top: 2px solid var(--yf-line);
}

.page-contact__split-col h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--yf-ink);
}

.page-contact__split-col p {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--yf-muted);
}

.page-contact__split-col p.page-contact__addr {
  padding-left: 12px;
  border-left: 3px solid var(--yf-cyan);
  font-family: var(--yf-mono);
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--yf-cyan-soft);
  user-select: all;
  overflow-wrap: anywhere;
}

/* ---------- 04 合作与内容 ---------- */
.page-contact__intro {
  margin: clamp(18px, 2.4vw, 28px) 0 0;
  max-width: 76ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--yf-muted);
}

.page-contact__partners {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pc-gap);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-contact__partner-group {
  min-width: 0;
}

.page-contact__partner-head {
  margin: 0 0 14px;
  font-family: var(--yf-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.22em;
  color: var(--yf-cyan);
}

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

.page-contact__partner {
  padding: 14px 16px;
  border: 2px solid var(--yf-line);
  background: linear-gradient(120deg, rgba(47, 232, 198, 0.1), rgba(47, 232, 198, 0) 62%),
    var(--yf-panel);
  transition: border-color 0.22s var(--yf-ease), transform 0.22s var(--yf-ease);
}

.page-contact__partner--inner {
  background: linear-gradient(120deg, rgba(255, 179, 71, 0.13), rgba(255, 179, 71, 0) 62%),
    var(--yf-panel);
}

.page-contact__partner strong {
  display: block;
  font-size: 14.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--yf-ink);
}

.page-contact__partner span {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--yf-muted);
}

/* ---------- 收尾 ---------- */
.page-contact__tail {
  padding: clamp(24px, 3.4vw, 44px);
  border: 2px solid var(--yf-line);
  background: linear-gradient(200deg, var(--yf-deep), var(--yf-panel) 72%);
  box-shadow: var(--yf-hard-shadow);
}

.page-contact__tail-title {
  margin: 12px 0 0;
  font-family: var(--yf-cond);
  font-weight: 200;
  font-size: clamp(24px, 3.6vw, 42px);
  line-height: 1.16;
  letter-spacing: 0.005em;
  color: var(--yf-ink);
}

.page-contact__tail-links {
  display: grid;
  gap: 0;
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact__tail-links li {
  border-top: 1px solid var(--yf-line);
}

.page-contact__tail-links a {
  display: block;
  padding: 14px 2px;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--yf-ink);
  text-decoration: none;
  transition: color 0.2s var(--yf-ease), padding-left 0.2s var(--yf-ease);
}

.page-contact__tail-links a:hover {
  color: var(--yf-cyan);
  padding-left: 10px;
}

/* ---------- 焦点环 ---------- */
.page-contact a:focus-visible,
.page-contact button:focus-visible,
.page-contact input:focus-visible,
.page-contact label:focus-within {
  outline: 2px solid var(--yf-cyan);
  outline-offset: 3px;
}

/* ---------- 悬停抬升 ---------- */
@media (hover: hover) {
  .page-contact__card:hover {
    transform: translate(-3px, -3px);
    border-color: var(--yf-cyan);
    box-shadow: var(--yf-hard-shadow-lg);
  }

  .page-contact__partner:hover {
    border-color: var(--yf-cyan-soft);
    transform: translateX(3px);
  }
}

/* ---------- 中屏 ---------- */
@media (min-width: 780px) {
  .page-contact__partners {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-contact__hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: center;
    gap: clamp(32px, 5vw, 64px);
  }

  .page-contact__window {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 大屏 ---------- */
@media (min-width: 1040px) {
  .page-contact__console {
    grid-template-columns: minmax(0, 1fr) 336px;
    align-items: start;
  }

  .page-contact__cards {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 18px;
  }

  .page-contact__card--mail {
    grid-column: 1 / 7;
  }

  .page-contact__card--phone {
    grid-column: 1 / 4;
  }

  .page-contact__card--office {
    grid-column: 4 / 7;
    margin-top: 30px;
  }

  .page-contact__kit {
    position: sticky;
    top: calc(var(--yf-header-h) + 20px);
  }
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: no-preference) {
  .page-contact__signal-ring--dash {
    animation: pc-sweep 22s linear infinite;
  }
}

@keyframes pc-sweep {
  to {
    transform: rotate(360deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}