/* ===== 合作与联系 ===== */
.page-contact {
  --pc-glow: rgba(41, 240, 208, 0.09);
  --pc-warm: rgba(255, 122, 26, 0.11);
  --pc-clay-soft: rgba(169, 106, 76, 0.16);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding-block: clamp(22px, 3.6vw, 44px) clamp(30px, 4.4vw, 58px);
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -14%;
  width: min(680px, 84vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 50% 50%, var(--pc-glow), transparent 68%);
  pointer-events: none;
  z-index: 0;
}

.page-contact .contact-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

.page-contact .contact-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 5.2vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--white);
  max-width: 16ch;
}

.page-contact .contact-hero__lead {
  margin: 18px 0 0;
  max-width: 40ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

.page-contact .contact-hero__actions {
  margin-top: 22px;
}

.page-contact .contact-hero__stats {
  list-style: none;
  margin: 26px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 16px clamp(20px, 4vw, 46px);
}

.page-contact .contact-hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 116px;
}

.page-contact .contact-hero__stats strong {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 2.8vw, 32px);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--cyan);
}

.page-contact .contact-hero__stats span {
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
  max-width: 15ch;
}

.page-contact .contact-hero__media {
  margin: 0;
  aspect-ratio: 14 / 9;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  overflow: hidden;
  box-shadow: var(--shadow-float);
}

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

/* ---------- 三个通道 ---------- */
.page-contact .contact-channels {
  position: relative;
  padding-block: clamp(38px, 5.4vw, 74px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(16, 26, 36, 0.85), rgba(7, 12, 20, 0.2));
}

.page-contact .contact-channels__head,
.page-contact .contact-tracks__head,
.page-contact .contact-more__head {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-contact .channel-list {
  list-style: none;
  margin: clamp(22px, 3.2vw, 34px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-contact .channel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(22px, 3vw, 34px);
  background: var(--ink-2);
  transition: background var(--dur) var(--ease);
}

.page-contact .channel::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--cyan);
}

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

.page-contact .channel--post::before {
  background: var(--clay);
}

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

.page-contact .channel__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
  text-transform: uppercase;
}

.page-contact .channel__value {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 2.5vw, 30px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-contact .channel--post .channel__value {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: clamp(16px, 1.75vw, 19px);
  line-height: 1.6;
}

.page-contact .channel__note {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--muted);
}

/* ---------- 合作范围 ---------- */
.page-contact .contact-tracks {
  padding-block: clamp(42px, 6vw, 82px);
}

.page-contact .track-stack {
  margin-top: clamp(22px, 3.2vw, 34px);
  display: grid;
  gap: 14px;
}

.page-contact .track {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
}

.page-contact .track::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--clay);
}

.page-contact .track__toggle {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(12px, 2.4vw, 24px);
  width: 100%;
  margin: 0;
  padding: 20px clamp(18px, 2.6vw, 30px) 20px clamp(22px, 3vw, 34px);
  background: none;
  border: 0;
  border-radius: 0;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: background var(--dur) var(--ease);
}

.page-contact .track__toggle:hover {
  background: rgba(41, 240, 208, 0.05);
}

.page-contact .track__toggle:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-contact .track__toggle::after {
  content: "收起";
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  border: 1px solid var(--cyan-edge);
  border-radius: 999px;
  padding: 4px 10px;
  white-space: nowrap;
}

.page-contact .track__toggle[aria-expanded="false"]::after {
  content: "展开";
  color: var(--muted);
  border-color: var(--line);
}

.page-contact .track__code {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--clay);
  white-space: nowrap;
}

.page-contact .track__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.2vw, 26px);
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-contact .track__inner {
  padding: 0 clamp(18px, 2.6vw, 30px) clamp(22px, 3vw, 32px) clamp(22px, 3vw, 34px);
}

.page-contact .track__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-contact .track__list li {
  position: relative;
  padding-left: 22px;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.76;
  color: var(--muted);
}

.page-contact .track__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 10px;
  height: 2px;
  background: var(--cyan);
}

.page-contact .track__list a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .track__split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.6vw, 30px);
  align-items: start;
}

.page-contact .track__figure {
  margin: 0;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  overflow: hidden;
}

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

.page-contact .track__action {
  margin: 20px 0 0;
  padding: 14px 18px;
  border-left: 3px solid var(--orange);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--pc-warm);
  color: var(--white);
  font-size: 15px;
  line-height: 1.72;
  max-width: 66ch;
}

/* ---------- 响应节奏 ---------- */
.page-contact .contact-response {
  padding-block: clamp(42px, 6vw, 80px);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(16, 26, 36, 0.6), transparent 72%);
}

.page-contact .contact-response__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.4vw, 56px);
}

.page-contact .contact-response__head {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-contact .contact-response__lead {
  margin: 2px 0 0;
  max-width: 34ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .response-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .response-list li {
  position: relative;
  display: grid;
  gap: 6px;
  padding: 16px 0 16px clamp(20px, 3vw, 32px);
  border-top: 1px solid var(--line);
}

.page-contact .response-list li:last-child {
  border-bottom: 1px solid var(--line);
}

.page-contact .response-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 26px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(41, 240, 208, 0.13);
}

.page-contact .response-list__time {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--orange);
  text-transform: uppercase;
}

.page-contact .response-list__text {
  margin: 0;
  max-width: 56ch;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--white);
}

/* ---------- 接着看 ---------- */
.page-contact .contact-more {
  padding-block: clamp(38px, 5vw, 62px) clamp(52px, 7vw, 96px);
  border-top: 1px solid var(--line);
}

.page-contact .contact-more__grid {
  margin-top: clamp(22px, 3vw, 32px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-contact .more-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-2);
  text-decoration: none;
  transition:
    border-color var(--dur) var(--ease),
    transform var(--dur) var(--ease),
    background var(--dur) var(--ease);
}

.page-contact .more-card:hover,
.page-contact .more-card:focus-visible {
  border-color: var(--cyan-edge);
  background: var(--surface);
  transform: translateY(-3px);
}

.page-contact .more-card:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-contact .more-card__index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-contact .more-card__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-contact .more-card__body {
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-contact .contact-more__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

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

  .page-contact .contact-response__grid {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    align-items: start;
  }

  .page-contact .track__split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: center;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    align-items: center;
  }

  .page-contact .contact-hero__media {
    transform: translateY(10px);
  }
}

@media (min-width: 1040px) {
  .page-contact .contact-more__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

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