.page-contact {
  --cc-gap: clamp(18px, 2.8vw, 32px);
  --cc-line-gold: rgba(212, 175, 55, 0.55);
  --cc-line-jade: rgba(53, 180, 156, 0.55);
  --cc-line-coral: rgba(228, 87, 46, 0.55);
  position: relative;
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */

.page-contact .contact-masthead {
  position: relative;
  padding: clamp(22px, 4vw, 44px) 0 clamp(30px, 5vw, 60px);
}

.page-contact .contact-masthead::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -18%;
  width: min(620px, 82vw);
  height: min(620px, 82vw);
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, rgba(212, 175, 55, 0.17), rgba(212, 175, 55, 0) 68%);
  pointer-events: none;
  z-index: 0;
}

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

.page-contact .contact-masthead__tag {
  margin: clamp(16px, 2.4vw, 28px) 0 10px;
  color: var(--jade-lt);
  writing-mode: horizontal-tb;
  transform: none;
}

.page-contact .contact-masthead__title {
  margin: 0 0 clamp(16px, 2.4vw, 24px);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 6.2vw, 68px);
  line-height: 1.14;
  letter-spacing: 0.01em;
  color: var(--ivory);
  max-width: 18ch;
}

.page-contact .contact-masthead__accent {
  background: var(--gold-foil);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.page-contact .contact-masthead__lede {
  margin: 0;
  max-width: var(--measure);
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.85;
  color: var(--mist-lt);
}

.page-contact .contact-masthead__media {
  position: relative;
  z-index: 1;
  width: min(var(--shell), 100% - 2 * var(--gutter));
  margin: clamp(26px, 4vw, 48px) auto 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line-soft);
  background: linear-gradient(160deg, rgba(26, 26, 26, 0.96), rgba(14, 14, 14, 0.98));
}

.page-contact .contact-masthead__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 1400 / 680;
  object-fit: cover;
}

.page-contact .contact-masthead__caption {
  padding: 12px clamp(16px, 2vw, 24px) 16px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist-lt);
}

/* ---------- 章节通用 ---------- */

.page-contact .section-head {
  align-items: flex-start;
  gap: clamp(14px, 3vw, 38px);
}

.page-contact .section-head__body {
  min-width: 0;
}

.page-contact .section-lede {
  margin: 10px 0 0;
  max-width: var(--measure);
  color: var(--mist-lt);
  line-height: 1.85;
}

/* ---------- 01 联系卡片 ---------- */

.page-contact .contact-channels {
  padding-block: clamp(28px, 5vw, 62px);
}

.page-contact .contact-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--cc-gap);
  margin-top: clamp(26px, 4vw, 48px);
}

.page-contact .contact-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(22px, 2.6vw, 34px);
  border-radius: var(--radius);
  border: 1px solid var(--line-soft);
  border-left-width: 3px;
  border-left-style: solid;
  background: linear-gradient(158deg, rgba(26, 26, 26, 0.97) 0%, rgba(14, 14, 14, 0.97) 100%);
  box-shadow: inset 0 1px 0 rgba(245, 241, 230, 0.03);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-contact .contact-card::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 -1px;
  width: 3px;
  border-radius: var(--radius) 0 0 var(--radius);
  background: var(--gold-foil);
  opacity: 0;
  transition: opacity 0.3s var(--ease);
  pointer-events: none;
}

.page-contact .contact-card:hover,
.page-contact .contact-card:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 18px 38px rgba(0, 0, 0, 0.5);
}

.page-contact .contact-card:hover::after,
.page-contact .contact-card:focus-within::after {
  opacity: 1;
}

.page-contact .contact-card--gold {
  border-left-color: var(--cc-line-gold);
}

.page-contact .contact-card--jade {
  border-left-color: var(--cc-line-jade);
}

.page-contact .contact-card--coral {
  border-left-color: var(--cc-line-coral);
}

.page-contact .contact-card__icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(212, 175, 55, 0.07);
  color: var(--gold);
}

.page-contact .contact-card--jade .contact-card__icon {
  border-color: rgba(53, 180, 156, 0.4);
  background: rgba(15, 123, 108, 0.14);
  color: var(--jade-lt);
}

.page-contact .contact-card--coral .contact-card__icon {
  border-color: rgba(228, 87, 46, 0.4);
  background: rgba(228, 87, 46, 0.1);
  color: var(--coral);
}

.page-contact .contact-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 2vw, 24px);
  color: var(--ivory);
}

.page-contact .contact-card__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-lt);
}

.page-contact .contact-card__value {
  margin: 2px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line-soft);
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.4vw, 18px);
  line-height: 1.5;
  letter-spacing: 0.01em;
  color: var(--gold-hi);
  overflow-wrap: anywhere;
}

.page-contact .contact-card--jade .contact-card__value {
  color: var(--jade-lt);
}

.page-contact .contact-card--coral .contact-card__value {
  color: var(--ivory);
}

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

.page-contact .contact-card__media {
  margin: auto 0 0;
  padding-top: 8px;
}

.page-contact .contact-card__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--line-soft);
}

/* ---------- 02 准备清单 ---------- */

.page-contact .contact-prep {
  padding-block: clamp(28px, 5vw, 62px);
}

.page-contact .checklist {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: clamp(24px, 3.6vw, 42px) 0 0;
  padding: 0;
  list-style: none;
}

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

.page-contact .checklist-btn {
  display: flex;
  width: 100%;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  border-radius: 14px;
  border: 1px solid var(--line-soft);
  background: rgba(26, 26, 26, 0.72);
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.22s var(--ease), background 0.22s var(--ease), transform 0.22s var(--ease);
}

.page-contact .checklist-btn:hover {
  border-color: var(--line);
  transform: translateY(-2px);
}

.page-contact .checklist-btn__box {
  position: relative;
  flex: none;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  border-radius: 6px;
  border: 1.5px solid var(--line);
  background: transparent;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .checklist-btn.is-on {
  border-color: rgba(228, 87, 46, 0.5);
  background: rgba(228, 87, 46, 0.08);
}

.page-contact .checklist-btn.is-on .checklist-btn__box {
  background: var(--coral);
  border-color: var(--coral);
}

.page-contact .checklist-btn.is-on .checklist-btn__box::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border: solid var(--ivory);
  border-width: 0 2px 2px 0;
  transform: rotate(42deg);
}

.page-contact .checklist-btn__label {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: var(--ivory);
  line-height: 1.5;
}

.page-contact .checklist-btn__hint {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist-lt);
}

.page-contact .checklist-btn__label,
.page-contact .checklist-btn__hint {
  min-width: 0;
}

/* ---------- 03 回复节奏 ---------- */

.page-contact .contact-rhythm {
  padding-block: clamp(28px, 5vw, 62px);
}

.page-contact .rhythm-layout {
  margin-top: clamp(26px, 4vw, 46px);
}

.page-contact .rhythm-rail {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin: 0;
  padding: 0 0 0 26px;
  list-style: none;
}

.page-contact .rhythm-rail::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--gold-dark), var(--gold), var(--gold-hi));
}

.page-contact .rhythm-tick {
  position: relative;
}

.page-contact .rhythm-tick::before {
  content: "";
  position: absolute;
  top: 6px;
  left: -31px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--gold);
}

.page-contact .rhythm-tick__time {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.4vw, 28px);
  line-height: 1.2;
  color: var(--gold-hi);
}

.page-contact .rhythm-tick__label {
  display: block;
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist-lt);
}

.page-contact .rhythm-notes {
  display: grid;
  gap: 14px;
  margin-top: clamp(26px, 3.6vw, 38px);
}

.page-contact .rhythm-note {
  padding: 18px 20px;
  border-radius: 14px;
  border: 1px solid var(--line-soft);
  border-top: 2px solid rgba(212, 175, 55, 0.45);
  background: linear-gradient(160deg, rgba(26, 26, 26, 0.9), rgba(14, 14, 14, 0.9));
}

.page-contact .rhythm-note__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  color: var(--ivory);
}

.page-contact .rhythm-note__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-lt);
}

/* ---------- 04 合作 ---------- */

.page-contact .contact-partners {
  padding-block: clamp(28px, 5vw, 62px);
}

.page-contact .partner-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--cc-gap);
  margin-top: clamp(26px, 4vw, 46px);
}

.page-contact .partner-panel {
  padding: clamp(24px, 3vw, 36px);
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(26, 26, 26, 0.96), rgba(14, 14, 14, 0.98));
}

.page-contact .partner-panel__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(19px, 2vw, 23px);
  color: var(--gold-hi);
}

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

.page-contact .partner-list__item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.page-contact .partner-list__mark {
  flex: none;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.9;
  letter-spacing: 0.06em;
  color: var(--jade-lt);
  border-bottom: 1px solid rgba(53, 180, 156, 0.4);
}

.page-contact .partner-list__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-lt);
}

.page-contact .partner-aside {
  padding: clamp(22px, 2.8vw, 32px);
  border-radius: var(--radius);
  border: 1px solid rgba(228, 87, 46, 0.32);
  background: linear-gradient(200deg, rgba(228, 87, 46, 0.1), rgba(14, 14, 14, 0.96) 55%);
}

.page-contact .partner-aside__kicker {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--coral);
}

.page-contact .partner-aside__text {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ivory);
}

.page-contact .partner-aside__mail {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.5;
  color: var(--gold-hi);
  overflow-wrap: anywhere;
}

.page-contact .partner-aside__meta {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist-lt);
}

/* ---------- 05 快捷入口 ---------- */

.page-contact .contact-shortcut {
  padding-block: clamp(28px, 5vw, 62px);
}

.page-contact .contact-shortcut__title {
  margin: 0 0 clamp(22px, 3vw, 36px);
}

.page-contact .shortcut-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-contact .shortcut-card {
  position: relative;
  display: grid;
  gap: 8px;
  padding: 22px 24px 22px 26px;
  border-radius: 14px;
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--jade);
  text-decoration: none;
  color: inherit;
  background: rgba(26, 26, 26, 0.7);
  transition: border-color 0.24s var(--ease), transform 0.24s var(--ease), background 0.24s var(--ease);
}

.page-contact .shortcut-card:hover,
.page-contact .shortcut-card:focus-visible {
  transform: translateY(-3px);
  border-left-color: var(--gold);
  background: rgba(212, 175, 55, 0.06);
}

.page-contact .shortcut-card__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-contact .shortcut-card__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  color: var(--ivory);
}

.page-contact .shortcut-card__text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist-lt);
}

.page-contact .shortcut-card__arrow {
  position: absolute;
  top: 20px;
  right: 22px;
  font-family: var(--font-mono);
  color: var(--gold);
  transition: transform 0.24s var(--ease);
}

.page-contact .shortcut-card:hover .shortcut-card__arrow {
  transform: translateX(4px);
}

/* ---------- 底部信息带 ---------- */

.page-contact .contact-band {
  margin-top: clamp(30px, 4vw, 54px);
  border-top: 1px solid var(--line-soft);
  background: linear-gradient(140deg, #1a1a1a 0%, #0e0e0e 62%, #0e0e0e 100%);
}

.page-contact .contact-band__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  padding-block: clamp(28px, 4vw, 48px);
}

.page-contact .contact-band__kicker {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--jade-lt);
}

.page-contact .contact-band__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist-lt);
}

.page-contact .contact-band__pairs {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 0;
}

.page-contact .contact-band__pair dt {
  margin: 0 0 4px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist-lt);
}

.page-contact .contact-band__pair dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.5;
  color: var(--gold-hi);
  overflow-wrap: anywhere;
}

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

/* ---------- 响应式 ---------- */

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

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

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

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

  .page-contact .contact-band__links {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-contact .contact-card:nth-child(1) {
    margin-top: 0;
  }

  .page-contact .contact-card:nth-child(2) {
    margin-top: 58px;
  }

  .page-contact .contact-card:nth-child(3) {
    margin-top: 24px;
  }

  .page-contact .rhythm-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: clamp(26px, 4vw, 56px);
    align-items: start;
  }

  .page-contact .rhythm-rail {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    padding: 34px 0 0;
  }

  .page-contact .rhythm-rail::before {
    top: 10px;
    bottom: auto;
    left: 0;
    right: 0;
    width: auto;
    height: 2px;
    background: linear-gradient(90deg, var(--gold-dark), var(--gold), var(--gold-hi));
  }

  .page-contact .rhythm-tick {
    padding-right: 16px;
  }

  .page-contact .rhythm-tick::before {
    top: -30px;
    left: 0;
  }

  .page-contact .rhythm-notes {
    margin-top: 0;
    grid-template-columns: 1fr;
  }

  .page-contact .partner-layout {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }

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

  .page-contact .contact-band__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.2fr) auto;
    align-items: center;
    gap: clamp(24px, 3.5vw, 56px);
  }

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

  .page-contact .contact-band__links {
    grid-column: auto;
    flex-direction: column;
    align-items: stretch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-card,
  .page-contact .checklist-btn,
  .page-contact .shortcut-card,
  .page-contact .shortcut-card__arrow {
    transition: none;
  }

  .page-contact .contact-card:hover,
  .page-contact .checklist-btn:hover,
  .page-contact .shortcut-card:hover {
    transform: none;
  }
}