/* ============ 联系品牌页面 ============ */
.page-contact {
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  padding-block: clamp(24px, 4vw, 48px) clamp(84px, 12vw, 148px);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(120% 78% at 10% -10%, rgba(20, 214, 196, .16) 0%, transparent 60%),
    linear-gradient(152deg, var(--river) 0%, var(--abyss) 58%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 62px), 0 100%);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 72px;
  z-index: -1;
  background-image: radial-gradient(circle at 50% 100%, transparent 13px, rgba(199, 214, 224, .16) 14px, transparent 15px);
  background-size: 44px 22px;
  background-repeat: repeat-x;
  pointer-events: none;
}

.page-contact .contact-hero__inner {
  display: grid;
  gap: clamp(30px, 4.5vw, 52px);
}

.page-contact .contact-hero__copy {
  max-width: 64ch;
}

.page-contact .contact-hero__title {
  margin: 14px 0 18px;
  color: var(--glass);
  font-size: clamp(30px, 5.2vw, 52px);
  line-height: 1.12;
  letter-spacing: .01em;
}

.page-contact .contact-hero__lead {
  max-width: 56ch;
  margin: 0;
  font-size: 17px;
  line-height: 1.8;
  color: var(--scale);
}

.page-contact .contact-hero__quote {
  position: relative;
  margin: 26px 0 0;
  padding-left: 22px;
  font-size: clamp(18px, 2.2vw, 22px);
  line-height: 1.6;
  color: var(--teal-bright);
}

.page-contact .contact-hero__quote::before {
  content: "";
  position: absolute;
  left: 0;
  top: .35em;
  bottom: .35em;
  width: 3px;
  background: linear-gradient(180deg, var(--teal), var(--coral));
}

.page-contact .contact-hero__media {
  margin: 0;
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-hard);
  aspect-ratio: 16 / 9;
}

/* ---------- 通用媒体框（页面作用域内） ---------- */
.page-contact .media-frame {
  display: block;
  overflow: hidden;
  background: var(--river);
}

.page-contact .media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 64%;
}

/* ---------- 联系三条目 + 值守时间带 ---------- */
.page-contact .contact-channels__grid {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  margin-top: clamp(28px, 4vw, 46px);
}

.page-contact .channel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-contact .channel-item {
  position: relative;
  padding: clamp(20px, 3vw, 28px) clamp(20px, 3vw, 30px) clamp(20px, 3vw, 28px) clamp(26px, 4vw, 36px);
  background: var(--panel);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-hard);
  backdrop-filter: blur(8px);
}

.page-contact .channel-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--teal), rgba(20, 214, 196, .25));
}

.page-contact .channel-item--coral::before {
  background: linear-gradient(180deg, var(--coral), rgba(255, 107, 74, .25));
}

.page-contact .channel-item__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.page-contact .channel-item__title {
  margin: 0;
  color: var(--glass);
  font-size: 18px;
  letter-spacing: .02em;
}

.page-contact .channel-item__value {
  margin: 0 0 12px;
  color: var(--gold);
  font-size: clamp(15px, 2.1vw, 19px);
  line-height: 1.5;
  overflow-wrap: anywhere;
  letter-spacing: .01em;
}

.page-contact .channel-item__use {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--mist);
}

/* 值守时间带 */
.page-contact .duty-band {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 3vw, 30px);
  background: var(--panel-soft);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-hard);
  backdrop-filter: blur(8px);
}

.page-contact .duty-band::after {
  content: "";
  position: absolute;
  right: -56px;
  bottom: -56px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(20, 214, 196, .18) 0%, transparent 68%);
  pointer-events: none;
}

.page-contact .duty-band .eyebrow {
  margin-bottom: 10px;
}

.page-contact .duty-band__title {
  margin: 0 0 8px;
  color: var(--glass);
  font-size: 20px;
  line-height: 1.45;
}

.page-contact .duty-band__intro {
  margin: 0 0 22px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}

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

.page-contact .duty-row {
  display: grid;
  gap: 8px;
}

.page-contact .duty-row__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.page-contact .duty-row__label {
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--scale);
}

.page-contact .duty-row__time {
  font-size: 14px;
  color: var(--gold);
}

.page-contact .duty-row__track {
  position: relative;
  display: block;
  height: 20px;
  background: rgba(199, 214, 224, .07);
  border: 1px solid var(--line);
}

.page-contact .duty-row__bar {
  display: block;
  height: 100%;
}

.page-contact .duty-row__bar--weekday {
  width: 75%;
  background: var(--teal);
}

.page-contact .duty-row__bar--match {
  width: 100%;
  background: linear-gradient(90deg, var(--teal) 0%, var(--teal) 70%, var(--gold) 92%, var(--coral) 100%);
}

.page-contact .duty-band__note {
  margin: 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--scale);
}

/* ---------- 四类沟通事项 ---------- */
.page-contact .topic-grid {
  display: grid;
  gap: 16px;
  margin-top: clamp(28px, 4vw, 44px);
  grid-template-columns: 1fr;
}

.page-contact .topic-card {
  background: var(--panel);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-hard);
  transition: transform .22s ease, box-shadow .22s ease, background-color .22s ease;
}

.page-contact .topic-card[open] {
  background: var(--river);
}

.page-contact .topic-card__summary {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "index name"
    "index hint";
  align-items: baseline;
  gap: 4px 14px;
  padding: 20px;
  cursor: pointer;
  list-style: none;
}

.page-contact .topic-card__summary::-webkit-details-marker {
  display: none;
}

.page-contact .topic-card__summary::marker {
  content: "";
}

.page-contact .topic-card__index {
  grid-area: index;
  font-size: 13px;
  color: var(--coral);
  line-height: 1.4;
}

.page-contact .topic-card__name {
  grid-area: name;
  font-family: var(--font-narrow);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: .02em;
  color: var(--glass);
}

.page-contact .topic-card__hint {
  grid-area: hint;
  font-size: 13px;
  line-height: 1.5;
  color: var(--mist);
}

.page-contact .topic-card__body {
  padding: 16px 20px 22px;
  border-top: 1px solid var(--line);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--scale);
}

.page-contact .topic-card__body p {
  margin: 0 0 10px;
}

.page-contact .topic-card__body p:last-child {
  margin-bottom: 0;
}

.page-contact .topic-card__body .caption {
  color: var(--mist);
  font-size: 13px;
  line-height: 1.6;
}

/* ---------- 沟通准备清单 ---------- */
.page-contact .contact-prep {
  position: relative;
  margin-block: clamp(8px, 2vw, 20px);
  padding-block: clamp(44px, 7vw, 84px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(100deg, rgba(20, 214, 196, .07) 0%, transparent 44%),
    var(--river-deep);
}

.page-contact .editorial {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
}

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

.page-contact .editorial__main .prose {
  margin-top: 16px;
}

.page-contact .editorial__rail {
  display: grid;
  gap: 14px;
  align-content: start;
  min-width: 0;
}

.page-contact .rail-note {
  margin: 0;
  padding: 16px 18px;
  border-left: 3px solid var(--teal);
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--panel-soft);
  font-size: 14px;
  line-height: 1.75;
  color: var(--scale);
}

.page-contact .rail-note--quiet {
  border-left-color: rgba(255, 107, 74, .8);
  color: var(--mist);
}

.page-contact .rail-note a {
  color: var(--teal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .rail-note a:hover {
  color: var(--teal-bright);
}

.page-contact .prep-list {
  list-style: none;
  counter-reset: prep;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-contact .prep-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: start;
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--line);
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--scale);
}

.page-contact .prep-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .prep-list li::before {
  counter-increment: prep;
  content: "0" counter(prep);
  display: block;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.5;
  color: var(--gold);
}

.page-contact .prep-list strong {
  color: var(--glass);
  font-weight: 700;
}

/* ---------- 站点归属与备案 ---------- */
.page-contact .about-split {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
}

.page-contact .about-split__copy {
  min-width: 0;
}

.page-contact .about-split__copy .prose {
  margin-top: 16px;
}

.page-contact .about-split__copy .prose a {
  color: var(--teal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .about-split__copy .prose a:hover {
  color: var(--teal-bright);
}

.page-contact .about-facts {
  margin: 26px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .about-facts > div {
  display: grid;
  grid-template-columns: minmax(84px, 116px) 1fr;
  gap: 16px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .about-facts dt {
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--mist);
}

.page-contact .about-facts dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--glass);
}

.page-contact .about-facts dd.display-num {
  color: var(--gold);
}

.page-contact .about-split__media {
  margin: 0;
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-hard);
  aspect-ratio: 16 / 10;
}

/* ---------- 悬停与焦点 ---------- */
@media (hover: hover) {
  .page-contact .topic-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lift);
  }

  .page-contact .channel-item:hover {
    background: var(--river);
  }
}

.page-contact .topic-card__summary:focus-visible,
.page-contact .channel-item a:focus-visible,
.page-contact .rail-note a:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-contact .topic-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 920px) {
  .page-contact .contact-channels__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-contact .editorial {
    grid-template-columns: minmax(0, 1fr) minmax(258px, 316px);
    align-items: start;
  }

  .page-contact .about-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
  }
}

@media (min-width: 1020px) {
  .page-contact .topic-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 519px) {
  .page-contact .contact-hero__title {
    font-size: 28px;
  }

  .page-contact .duty-row__head {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }

  .page-contact .about-facts > div {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}

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

  .page-contact .topic-card:hover {
    transform: none;
  }
}