.page-contact {
  --contact-line: rgba(184, 122, 84, 0.32);
  --contact-line-strong: rgba(184, 122, 84, 0.68);
  --contact-gap: clamp(30px, 5vw, 64px);
  --contact-cyan-soft: rgba(53, 224, 208, 0.09);
  --contact-cyan-line: rgba(53, 224, 208, 0.24);
  padding-bottom: clamp(64px, 9vw, 120px);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  max-width: 940px;
  padding-top: clamp(18px, 4vw, 42px);
}

.page-contact .contact-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.2vw, 58px);
  line-height: 1.06;
  letter-spacing: 0.04em;
  color: var(--rock-100);
}

.page-contact .contact-hero .lede {
  margin: 22px 0 0;
  max-width: 36em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.75;
  color: var(--rock-100);
  opacity: 0.78;
}

.page-contact .contact-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-jump__link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 16px;
  border: 1px solid var(--ink-800);
  color: var(--rock-400);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: border-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out),
    background-color var(--dur-fast) var(--ease-out);
}

.page-contact .contact-jump__link::before {
  content: "";
  width: 6px;
  height: 6px;
  background: currentColor;
  transform: rotate(45deg);
}

.page-contact .contact-jump__link:hover,
.page-contact .contact-jump__link:focus-visible {
  border-color: var(--signal-cyan);
  color: var(--signal-cyan);
  background: var(--contact-cyan-soft);
}

/* ---------- 横幅 ---------- */
.page-contact .contact-banner {
  margin: var(--contact-gap) 0 0;
  border: 1px solid var(--ink-800);
  background: var(--ink-900);
  overflow: hidden;
}

.page-contact .contact-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

/* ---------- 分栏 ---------- */
.page-contact .contact-split {
  display: grid;
  gap: var(--contact-gap);
  margin-top: var(--contact-gap);
  padding-top: var(--contact-gap);
  border-top: 1px solid var(--contact-line);
}

.page-contact .section-head {
  margin-bottom: 24px;
}

.page-contact .section-head h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.16;
  letter-spacing: 0.04em;
  color: var(--rock-100);
}

/* ---------- 渠道 ---------- */
.page-contact .channel {
  padding: 24px 0 26px 22px;
  border-left: 2px solid var(--contact-line);
  border-top: 1px solid var(--contact-line);
  transition: border-left-color var(--dur-mid) var(--ease-out);
}

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

.page-contact .channel:target,
.page-contact .channel:hover {
  border-left-color: var(--clay);
}

.page-contact .channel__code {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--clay);
}

.page-contact .channel__name {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--rock-400);
}

.page-contact .channel__value {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(17px, 3.1vw, 28px);
  font-weight: 600;
  line-height: 1.34;
  letter-spacing: 0.005em;
  color: var(--rock-100);
  overflow-wrap: anywhere;
  user-select: all;
  -webkit-user-select: all;
  cursor: text;
}

.page-contact .channel__desc {
  margin: 14px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.72;
  color: var(--rock-400);
}

.page-contact .channel__note {
  display: inline-block;
  margin: 14px 0 0;
  padding: 7px 12px;
  border: 1px solid var(--contact-cyan-line);
  background: var(--contact-cyan-soft);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--signal-cyan);
}

/* ---------- 反馈准备 ---------- */
.page-contact .contact-prepare {
  padding: 26px 22px 30px;
  background: var(--ink-900);
  border: 1px solid var(--ink-800);
  border-top: 2px solid var(--clay);
}

.page-contact .contact-prepare .section-head {
  margin-bottom: 12px;
}

.page-contact .contact-prepare .section-head h2 {
  font-size: clamp(20px, 2.8vw, 26px);
}

.page-contact .contact-prepare__lede {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--rock-400);
}

.page-contact .prepare-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .prepare-item {
  display: grid;
  grid-template-columns: 20px 30px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  padding: 16px 0;
  border-top: 1px solid var(--ink-800);
  cursor: pointer;
}

.page-contact .prepare-list > li:first-child .prepare-item {
  border-top: 0;
}

.page-contact .prepare-item__check {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  margin: 3px 0 0;
  border: 1px solid var(--rock-400);
  background: transparent;
  cursor: pointer;
  transition: background-color var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-fast) var(--ease-out);
}

.page-contact .prepare-item__check:checked {
  background: var(--signal-cyan);
  border-color: var(--signal-cyan);
  box-shadow: inset 0 0 0 3px var(--ink-900);
}

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

.page-contact .prepare-item__num {
  padding-top: 4px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--clay);
}

.page-contact .prepare-item__text {
  display: block;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--rock-400);
}

.page-contact .prepare-item__text strong {
  display: block;
  margin-bottom: 5px;
  font-family: var(--font-display);
  font-size: 15.5px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--rock-100);
}

/* ---------- 坐标 ---------- */
.page-contact .contact-coordinate {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  margin-top: var(--contact-gap);
  padding-top: var(--contact-gap);
  border-top: 1px solid var(--contact-line-strong);
}

.page-contact .contact-coordinate__media {
  margin: 0;
  border: 1px solid var(--ink-800);
  background: var(--ink-900);
  overflow: hidden;
}

.page-contact .contact-coordinate__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 4;
  object-fit: cover;
}

.page-contact .contact-coordinate__text h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1.14;
  letter-spacing: 0.04em;
  color: var(--rock-100);
}

.page-contact .contact-coordinate__text p {
  margin: 16px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--rock-400);
}

/* ---------- 延伸入口 ---------- */
.page-contact .contact-more {
  margin-top: var(--contact-gap);
  padding: clamp(26px, 4vw, 42px);
  background: linear-gradient(180deg, var(--ink-900), var(--ink-950));
  border: 1px solid var(--ink-800);
}

.page-contact .contact-more h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.6vw, 24px);
  letter-spacing: 0.04em;
  color: var(--rock-100);
}

.page-contact .contact-more p {
  margin: 14px 0 0;
  max-width: 48em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--rock-400);
}

.page-contact .contact-more__list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 900px) {
  .page-contact .contact-split {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: clamp(40px, 5vw, 76px);
    align-items: start;
  }
}

@media (min-width: 860px) {
  .page-contact .contact-coordinate {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    align-items: center;
  }
}

@media (max-width: 480px) {
  .page-contact .prepare-item {
    grid-template-columns: 20px minmax(0, 1fr);
    gap: 6px 10px;
  }

  .page-contact .prepare-item__num {
    display: none;
  }

  .page-contact .contact-jump__link {
    padding: 8px 13px;
    font-size: 12.5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    transition: none !important;
    animation: none !important;
  }
}