/* ===== page-contact 联络支持 ===== */
.page-contact {
  background: var(--ink-900);
  color: var(--mist);
  font-family: var(--font-body);
}

.page-contact [id] {
  scroll-margin-top: calc(var(--header-h) + 20px);
}

/* ---- 首屏 ---- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: calc(var(--header-h) + clamp(28px, 6vw, 70px)) 0 clamp(32px, 6vw, 76px);
  background: var(--ink-900);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: 0;
  right: -10%;
  width: min(820px, 82%);
  height: 100%;
  background: linear-gradient(158deg, var(--ink-800) 0%, var(--ink-750) 100%);
  clip-path: polygon(26% 0, 100% 0, 100% 100%, 0 100%);
  opacity: 0.86;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  left: 0;
  bottom: 0;
  width: 38%;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
}

.page-contact .contact-hero__inner {
  position: relative;
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-contact .contact-hero__copy {
  min-width: 0;
}

.page-contact .contact-hero h1 {
  margin: 14px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(30px, 7.2vw, 60px);
  line-height: 1.06;
  letter-spacing: -0.012em;
  color: var(--mist);
  max-width: 15em;
}

.page-contact .contact-hero .lede {
  margin: 0;
  max-width: 46em;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.8;
  color: var(--slate);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-contact .contact-hero__meta {
  list-style: none;
  margin: clamp(22px, 4vw, 36px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
  max-width: 46em;
}

.page-contact .contact-hero__meta-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 18px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .contact-hero__meta-item .k {
  flex: 0 0 84px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-contact .contact-hero__meta-item .v {
  min-width: 0;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--mist);
}

.page-contact .contact-hero__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-contact .contact-hero__media::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 54px;
  height: 4px;
  background: var(--cyan);
}

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

/* ---- 主体骨架 ---- */
.page-contact .contact-body {
  padding: clamp(28px, 5vw, 62px) 0 clamp(48px, 8vw, 96px);
}

.page-contact .contact-rail {
  display: grid;
  gap: 18px;
  align-content: start;
  min-width: 0;
}

.page-contact .contact-toc {
  border-top: 2px solid var(--cyan);
  padding-top: 14px;
}

.page-contact .contact-toc__title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-contact .toc-link {
  display: block;
  padding: 8px 0;
  font-size: 14px;
  color: var(--slate);
  text-decoration: none;
  border-bottom: 1px solid var(--line-soft);
  transition: color 0.18s ease, padding-left 0.18s ease;
}

.page-contact .toc-link:hover,
.page-contact .toc-link:focus-visible {
  color: var(--cyan);
  padding-left: 6px;
}

.page-contact .toc-link.is-active {
  color: var(--cyan);
  padding-left: 6px;
}

.page-contact .contact-railcard {
  border: 1px solid var(--line);
  background: var(--ink-800);
  padding: 16px;
}

.page-contact .contact-railcard--hours {
  background: transparent;
}

.page-contact .contact-railcard__label {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .contact-railcard--hours .contact-railcard__label {
  color: var(--orange);
}

.page-contact .contact-railcard__mail,
.page-contact .contact-railcard__tel {
  display: block;
  margin: 0 0 10px;
  font-size: 13.5px;
  line-height: 1.5;
  word-break: break-all;
  color: var(--mist);
}

.page-contact .contact-railcard__tel {
  font-size: 18px;
  color: var(--orange);
  word-break: normal;
}

.page-contact .contact-railcard__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---- 章节 ---- */
.page-contact .contact-section {
  padding: clamp(28px, 4vw, 46px) 0;
  border-top: 1px solid var(--line);
  min-width: 0;
}

.page-contact .contact-section:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-contact .sec-num {
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: 0.26em;
  color: var(--orange);
}

.page-contact .section-head__text {
  max-width: 52em;
  color: var(--slate);
  font-size: 15px;
  line-height: 1.8;
}

.page-contact .contact-section a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

.page-contact .contact-section a:hover,
.page-contact .contact-section a:focus-visible {
  color: var(--mist);
  border-bottom-color: var(--cyan);
}

/* ---- 01 渠道 ---- */
.page-contact .channel-grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(20px, 3vw, 30px);
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--ink-800);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 46px;
  height: 3px;
  background: var(--slate);
}

.page-contact .channel-card--email::before {
  background: var(--cyan);
}

.page-contact .channel-card--phone::before {
  background: var(--orange);
}

.page-contact .channel-card--addr::before {
  background: var(--blue);
}

.page-contact .channel-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: 0.01em;
  color: var(--mist);
}

.page-contact .channel-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(13.5px, 1.6vw, 16px);
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--mist);
  word-break: break-all;
}

.page-contact .channel-card--email .channel-card__value {
  color: var(--cyan);
  word-break: break-word;
}

.page-contact .channel-card--phone .channel-card__value {
  color: var(--orange);
  font-size: 22px;
  word-break: normal;
}

.page-contact .channel-card__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--slate);
}

.page-contact .channel-card__meta {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--slate);
}

.page-contact .hours-track {
  margin-top: 16px;
  padding: 16px 18px 12px;
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-contact .hours-track__head {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--slate);
}

.page-contact .hours-bar {
  position: relative;
  height: 10px;
  margin-top: 14px;
  background: rgba(143, 163, 184, 0.16);
}

.page-contact .hours-bar__fill {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 37.5%;
  width: 37.5%;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
}

.page-contact .hours-scale {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--slate);
}

/* ---- 02 准备清单 ---- */
.page-contact .prep-wrap {
  margin-top: clamp(20px, 3vw, 30px);
}

.page-contact .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-contact .filter-btn {
  padding: 8px 14px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--slate);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.page-contact .filter-btn:hover,
.page-contact .filter-btn:focus-visible {
  color: var(--mist);
  border-color: var(--slate);
}

.page-contact .filter-btn.is-active {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-900);
}

.page-contact .prep-grid {
  display: grid;
  gap: 1px;
  margin-top: 16px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .prep-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--ink-800);
}

.page-contact .prep-card[hidden] {
  display: none;
}

.page-contact .prep-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 19px;
  line-height: 1.4;
  letter-spacing: 0.01em;
  color: var(--mist);
}

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

.page-contact .prep-list li {
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--slate);
}

.page-contact .prep-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 10px;
  height: 1px;
  background: var(--cyan);
}

.page-contact .prep-note {
  margin: 14px 0 0;
  padding: 14px 16px;
  border-left: 3px solid var(--red);
  background: rgba(226, 72, 42, 0.09);
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .inline-link-line {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}

/* ---- 03 入口变更 ---- */
.page-contact .entry-compare {
  display: grid;
  gap: 1px;
  margin-top: clamp(20px, 3vw, 30px);
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .entry-col {
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--ink-800);
  min-width: 0;
}

.page-contact .entry-col--to {
  background: var(--ink-750);
}

.page-contact .entry-col__label {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-contact .entry-col--to .entry-col__label {
  color: var(--cyan);
}

.page-contact .entry-col p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--slate);
}

.page-contact .entry-ask {
  margin-top: 16px;
  padding: clamp(16px, 2.4vw, 26px);
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-contact .entry-ask__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: 0.02em;
  color: var(--mist);
}

.page-contact .num-list {
  counter-reset: nl;
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .num-list li {
  counter-increment: nl;
  position: relative;
  padding-left: 40px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--slate);
}

.page-contact .num-list li::before {
  content: counter(nl, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--orange);
}

.page-contact .num-list li::after {
  content: "";
  position: absolute;
  left: 26px;
  top: 4px;
  bottom: 4px;
  width: 1px;
  background: var(--line);
}

.page-contact .entry-ask__foot {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}

/* ---- 04 测试版与合作 ---- */
.page-contact .feedback-grid {
  display: grid;
  gap: 16px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-contact .feedback-card {
  display: grid;
  gap: 14px;
  align-content: start;
  min-width: 0;
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-contact .feedback-card--beta {
  border-left: 3px solid var(--cyan);
}

.page-contact .feedback-card--biz {
  border-left: 3px solid var(--orange);
}

.page-contact .feedback-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 19px;
  line-height: 1.4;
  color: var(--mist);
}

.page-contact .feedback-card__foot {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--slate);
}

/* ---- 05 地址与区域 ---- */
.page-contact .addr-grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
  margin-top: clamp(20px, 3vw, 30px);
}

.page-contact .addr-card {
  display: grid;
  gap: 14px;
  align-content: start;
  min-width: 0;
  padding: clamp(18px, 2.6vw, 28px);
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-contact .addr-card__label {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-contact .addr-card__line {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(16px, 2.2vw, 20px);
  line-height: 1.5;
  color: var(--mist);
}

.page-contact .addr-card__desc,
.page-contact .addr-card__foot {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--slate);
}

.page-contact .addr-card__foot {
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 13.5px;
}

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

.page-contact .reach-stats li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  padding: 12px 14px;
  background: var(--ink-900);
}

.page-contact .reach-stats__num {
  font-size: 24px;
  line-height: 1;
  color: var(--cyan);
  letter-spacing: -0.02em;
}

.page-contact .reach-stats li:nth-child(2) .reach-stats__num {
  color: var(--orange);
}

.page-contact .reach-stats__label {
  font-size: 13.5px;
  color: var(--slate);
}

.page-contact .addr-media {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-800);
  overflow: hidden;
}

.page-contact .addr-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .addr-media figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--slate);
}

/* ---- 响应式 ---- */
@media (min-width: 640px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .channel-card--addr {
    grid-column: 1 / -1;
  }

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

@media (min-width: 820px) {
  .page-contact .prep-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .prep-card:first-child {
    grid-column: 1 / -1;
  }

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

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

@media (min-width: 900px) {
  .page-contact .contact-hero__inner {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: center;
  }

  .page-contact .contact-hero__media {
    border-right: 4px solid var(--cyan);
  }
}

@media (min-width: 1025px) {
  .page-contact .contact-rail {
    position: sticky;
    top: calc(var(--header-h) + 26px);
  }

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

  .page-contact .channel-card--addr {
    grid-column: auto;
  }

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

@media (max-width: 480px) {
  .page-contact .contact-hero__meta-item .k {
    flex: 0 0 100%;
  }

  .page-contact .contact-hero__actions .btn {
    width: 100%;
    text-align: center;
  }

  .page-contact .num-list li {
    padding-left: 34px;
  }

  .page-contact .num-list li::after {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .toc-link,
  .page-contact .filter-btn {
    transition: none;
  }
}