.page-contact {
  --contact-notch: 18px;
  --contact-card: var(--ink-800);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(24px, 4vw, 48px) clamp(44px, 7vw, 88px);
}
.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -12%;
  right: -18%;
  width: min(760px, 84vw);
  height: min(560px, 62vh);
  background: linear-gradient(135deg, rgba(34, 224, 208, 0.18), rgba(29, 50, 85, 0) 72%);
  clip-path: polygon(20% 0, 100% 0, 100% 100%, 0 76%);
  pointer-events: none;
  z-index: 0;
}
.page-contact .contact-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 5vw, 52px);
  align-items: center;
}
.page-contact .contact-hero__title {
  margin: 12px 0 20px;
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 6.4vw, 4.2rem);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--chalk);
}
.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}
.page-contact .contact-hero__figure {
  margin: 0;
  min-width: 0;
}
.page-contact .contact-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-contact .contact-hero__slash {
  position: absolute;
  left: 0;
  bottom: 26px;
  width: min(220px, 42vw);
  height: 2px;
  background: linear-gradient(90deg, var(--blazing-red), rgba(255, 74, 39, 0));
  transform: rotate(-12deg);
  transform-origin: left center;
  pointer-events: none;
}

/* ---------- 三条入口 ---------- */
.page-contact .contact-channels__head {
  max-width: 46rem;
  margin-bottom: clamp(28px, 4vw, 48px);
}
.page-contact .contact-channels__title {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 4vw, 2.7rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.015em;
  color: var(--chalk);
}
.page-contact .contact-channels__intro {
  color: var(--slate-300);
  margin: 0;
}
.page-contact .contact-channels__grid {
  display: grid;
  gap: clamp(18px, 2.4vw, 26px);
}
.page-contact .channel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(24px, 3vw, 34px) clamp(20px, 2.4vw, 30px);
  background: var(--contact-card);
  box-shadow: inset 0 0 0 1px var(--ink-700);
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease);
}
.page-contact .channel--a {
  clip-path: polygon(20px 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%, 0 20px);
}
.page-contact .channel--b {
  clip-path: polygon(0 0, calc(100% - 30px) 0, 100% 30px, 100% 100%, 30px 100%, 0 calc(100% - 30px));
}
.page-contact .channel--c {
  clip-path: polygon(24px 0, 100% 0, 100% 100%, 0 100%, 0 24px);
}
.page-contact .channel:hover,
.page-contact .channel:focus-within {
  transform: translateY(-2px);
  box-shadow: inset 0 0 0 1px var(--neon-cyan);
}
.page-contact .channel__index {
  margin: 0;
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1;
  color: var(--ink-700);
}
.page-contact .channel__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.1vw, 1.4rem);
  font-weight: 900;
  line-height: 1.2;
  color: var(--chalk);
}
.page-contact .channel__for {
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--cyan-100);
}
.page-contact .channel__body {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--slate-300);
}
.page-contact .channel__need {
  list-style: none;
  margin: auto 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--ink-700);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
}
.page-contact .channel__need li {
  position: relative;
  padding-left: 12px;
  font-size: 0.8rem;
  color: var(--blue-gray);
}
.page-contact .channel__need li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 5px;
  height: 1px;
  background: var(--neon-cyan);
}

/* ---------- 约赛前准备 ---------- */
.page-contact .contact-prep__grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}
.page-contact .contact-prep__title {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.4vw, 2.4rem);
  font-weight: 900;
  line-height: 1.1;
  color: var(--chalk);
}
.page-contact .contact-prep__copy .prose {
  max-width: 40rem;
  color: var(--slate-300);
}
.page-contact .prep-list {
  margin: 28px 0 0;
  border-top: 1px solid var(--ink-700);
}
.page-contact .prep-list__row {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--ink-700);
}
.page-contact .prep-list__key {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--score-amber);
}
.page-contact .prep-list__val {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--slate-300);
}
.page-contact .contact-prep__note {
  margin: 22px 0 0;
  font-family: var(--font-editorial);
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--cyan-100);
}
.page-contact .side-card {
  padding: clamp(22px, 3vw, 32px);
  background: linear-gradient(160deg, rgba(34, 224, 208, 0.12), rgba(18, 32, 58, 0.9) 58%);
  box-shadow: inset 0 0 0 1px var(--ink-700);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}
.page-contact .side-card__label {
  margin: 0 0 18px;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--neon-cyan);
}
.page-contact .side-card__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-contact .side-card__steps li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: 1.05rem;
  color: var(--chalk);
}
.page-contact .side-card__steps .mono {
  color: var(--score-amber);
  font-size: 0.85rem;
}
.page-contact .side-card__foot {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--ink-700);
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--blue-gray);
}

/* ---------- 联系方式 ---------- */
.page-contact .contact-desk__head {
  max-width: 44rem;
  margin-bottom: clamp(26px, 3.6vw, 44px);
}
.page-contact .contact-desk__title {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.8vw, 2.6rem);
  font-weight: 900;
  line-height: 1.08;
  color: var(--chalk);
}
.page-contact .contact-desk__intro {
  margin: 0;
  color: var(--slate-300);
}
.page-contact .contact-desk__band {
  display: grid;
  gap: 1px;
  background: var(--ink-700);
  box-shadow: 0 0 0 1px var(--ink-700);
}
.page-contact .desk-item {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(22px, 3vw, 30px) clamp(20px, 2.6vw, 28px);
  background: var(--contact-card);
  min-width: 0;
}
.page-contact .desk-item__label {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue-gray);
}
.page-contact .desk-item__value {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: none;
  text-align: left;
  font-family: var(--font-mono);
  font-size: clamp(0.98rem, 2.1vw, 1.22rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.35;
  color: var(--neon-cyan);
  cursor: pointer;
  word-break: break-word;
  transition: color 0.2s var(--ease);
}
.page-contact .desk-item__value:hover,
.page-contact .desk-item__value:focus-visible {
  color: var(--blazing-red);
}
.page-contact .desk-item__value.is-copied {
  color: var(--score-amber);
}
.page-contact .desk-item__value--text {
  cursor: default;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(0.95rem, 1.9vw, 1.08rem);
  line-height: 1.7;
  color: var(--chalk);
}
.page-contact .desk-item__value--text:hover {
  color: var(--chalk);
}
.page-contact .desk-item__value--time {
  font-size: clamp(1.05rem, 2.4vw, 1.4rem);
  color: var(--score-amber);
}
.page-contact .desk-item__value--time:hover {
  color: var(--score-amber);
}
.page-contact .desk-item__note {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--blue-gray);
}
.page-contact .live-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--neon-cyan);
  box-shadow: 0 0 0 0 rgba(34, 224, 208, 0.6);
  animation: contact-pulse 2.4s ease-out infinite;
  vertical-align: middle;
}
@keyframes contact-pulse {
  0% { box-shadow: 0 0 0 0 rgba(34, 224, 208, 0.55); }
  70% { box-shadow: 0 0 0 8px rgba(34, 224, 208, 0); }
  100% { box-shadow: 0 0 0 0 rgba(34, 224, 208, 0); }
}
.page-contact .contact-desk__route {
  margin-top: clamp(28px, 4vw, 46px);
  padding: clamp(22px, 3vw, 32px);
  background: var(--ink-800);
  box-shadow: inset 0 0 0 1px var(--ink-700);
}
.page-contact .contact-desk__route-label {
  margin: 0 0 16px;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan-100);
}
.page-contact .route-line {
  position: relative;
  height: 2px;
  margin: 0 6px 18px;
  background: linear-gradient(90deg, var(--ink-700), rgba(29, 50, 85, 0.2));
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.page-contact .route-line__node {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--ink-950);
  box-shadow: inset 0 0 0 2px var(--ink-700);
}
.page-contact .route-line__node--end {
  box-shadow: inset 0 0 0 2px var(--neon-cyan);
  background: var(--neon-cyan);
}
.page-contact .route-line__trace {
  position: absolute;
  left: 0;
  top: 0;
  height: 2px;
  width: 100%;
  background: linear-gradient(90deg, rgba(34, 224, 208, 0), rgba(34, 224, 208, 0.85));
}
.page-contact .contact-desk__route-text {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--slate-300);
}

/* ---------- 响应节奏 ---------- */
.page-contact .contact-reply__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  align-items: center;
}
.page-contact .contact-reply__figure {
  margin: 0;
  min-width: 0;
}
.page-contact .contact-reply__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-contact .contact-reply__title {
  margin: 10px 0 22px;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3.4vw, 2.3rem);
  font-weight: 900;
  line-height: 1.1;
  color: var(--chalk);
}
.page-contact .reply-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--ink-700);
}
.page-contact .reply-list__item {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--ink-700);
}
.page-contact .reply-list__key {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--neon-cyan);
}
.page-contact .reply-list__val {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--slate-300);
}
.page-contact .contact-reply__tip {
  margin: 22px 0 0;
  font-family: var(--font-editorial);
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--cyan-100);
}

/* ---------- 合作方向 ---------- */
.page-contact .contact-partners__head {
  max-width: 44rem;
  margin-bottom: clamp(24px, 3.4vw, 40px);
}
.page-contact .contact-partners__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3.4vw, 2.3rem);
  font-weight: 900;
  line-height: 1.1;
  color: var(--chalk);
}
.page-contact .partners-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--ink-700);
  box-shadow: 0 0 0 1px var(--ink-700);
}
.page-contact .partners-list__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(16px, 3vw, 34px);
  align-items: start;
  padding: clamp(20px, 3vw, 30px) clamp(18px, 2.6vw, 30px);
  background: var(--ink-950);
  transition: background 0.22s var(--ease);
}
.page-contact .partners-list__item:hover {
  background: var(--ink-800);
}
.page-contact .partners-list__num {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  line-height: 1;
  color: var(--blazing-red);
}
.page-contact .partners-list__name {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 900;
  color: var(--chalk);
}
.page-contact .partners-list__body p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--slate-300);
}
.page-contact .contact-partners__foot {
  margin: clamp(24px, 3vw, 36px) 0 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--blue-gray);
}
.page-contact .contact-partners__foot a {
  color: var(--neon-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-contact .contact-partners__foot a:hover {
  color: var(--blazing-red);
}

/* ---------- 焦点态 ---------- */
.page-contact a:focus-visible,
.page-contact button:focus-visible {
  outline: 2px solid var(--neon-cyan);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .contact-desk__band {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-contact .contact-prep__grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
  }
  .page-contact .contact-channels__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-contact .contact-channels__grid .channel--c {
    grid-column: span 2;
  }
}

@media (min-width: 980px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
  .page-contact .contact-channels__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-contact .contact-channels__grid .channel--c {
    grid-column: auto;
  }
  .page-contact .contact-desk__band {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-contact .contact-reply__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }
  .page-contact .prep-list__row {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: 24px;
    align-items: baseline;
  }
  .page-contact .reply-list__item {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: 24px;
    align-items: baseline;
  }
  .page-contact .partners-list__item {
    grid-template-columns: 72px minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .desk-item__value,
  .page-contact .partners-list__item {
    transition: none;
  }
  .page-contact .channel:hover,
  .page-contact .channel:focus-within {
    transform: none;
  }
  .page-contact .live-dot {
    animation: none;
  }
}