.page-contact {
  position: relative;
  isolation: isolate;
  background: var(--ink-900);
  color: var(--moon);
  overflow-x: hidden;
}

.page-contact *,
.page-contact *::before,
.page-contact *::after {
  box-sizing: border-box;
}

.page-contact::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 105vh;
  z-index: 0;
  pointer-events: none;
  background-image: radial-gradient(rgba(233, 238, 247, 0.22) 1px, transparent 1px);
  background-size: 68px 68px;
  opacity: 0.42;
}

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

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  padding-top: calc(var(--header-h) + clamp(26px, 6vw, 62px));
  padding-bottom: clamp(34px, 6vw, 68px);
  background:
    radial-gradient(52% 62% at 84% 4%, rgba(124, 92, 255, 0.24), transparent 68%),
    radial-gradient(46% 58% at 5% 32%, rgba(61, 227, 206, 0.09), transparent 70%);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  margin-top: clamp(26px, 5vw, 56px);
}

.page-contact .contact-hero__title {
  margin: 14px 0 0;
  font-size: clamp(42px, 10vw, 96px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.025em;
}

.page-contact .contact-hero__title span {
  display: block;
}

.page-contact .contact-hero__title-step {
  padding-left: clamp(14px, 5vw, 72px);
  background: linear-gradient(96deg, var(--moon) 0%, var(--cyan) 58%, var(--violet) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: var(--moon);
  -webkit-text-fill-color: transparent;
}

.page-contact .contact-hero__intro {
  margin: 0;
  max-width: 46ch;
  font-size: clamp(16px, 1.9vw, 18px);
  font-weight: 300;
  line-height: 1.78;
  color: rgba(233, 238, 247, 0.72);
}

.page-contact .contact-hero__hud {
  margin: 18px 0 0;
  color: rgba(61, 227, 206, 0.62);
  letter-spacing: 0.14em;
}

@media (min-width: 880px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.85fr);
    align-items: end;
    gap: clamp(40px, 6vw, 96px);
  }
}

/* ---------- 氛围图 ---------- */

.page-contact .contact-visual {
  margin-top: clamp(6px, 2vw, 20px);
}

.page-contact .contact-visual__media {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-800);
}

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

/* ---------- 渠道 / 写信提示 ---------- */

.page-contact .contact-lanes {
  margin-top: clamp(44px, 8vw, 100px);
}

.page-contact .contact-lanes__grid {
  display: grid;
  gap: clamp(32px, 5vw, 60px);
}

.page-contact .contact-lanes__heading {
  margin: 0 0 clamp(16px, 3vw, 28px);
  font-size: clamp(26px, 4.4vw, 44px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.14;
}

.page-contact .channel {
  padding: clamp(22px, 3.2vw, 34px) 0;
  border-top: 1px solid var(--line);
}

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

.page-contact .channel__title {
  margin: 0 0 14px;
  font-size: clamp(17px, 2.2vw, 20px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--moon);
}

.page-contact .channel__value {
  margin: 0 0 14px;
  font-weight: 700;
  line-height: 1.3;
}

.page-contact .channel__value--mail {
  font-family: var(--font-mono);
  font-size: clamp(14px, 4.1vw, 30px);
  letter-spacing: -0.015em;
  color: var(--moon);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .channel__value--tel {
  font-family: var(--font-mono);
  font-size: clamp(24px, 5vw, 40px);
  letter-spacing: 0.05em;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
}

.page-contact .channel__value--addr {
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.2vw, 18px);
  font-weight: 400;
  letter-spacing: 0.05em;
  line-height: 1.65;
  color: var(--moon);
}

.page-contact .channel__desc {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  font-weight: 300;
  line-height: 1.75;
  color: rgba(233, 238, 247, 0.52);
}

.page-contact .contact-brief {
  padding: clamp(24px, 3.2vw, 34px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(165deg, rgba(12, 18, 32, 0.98), rgba(16, 26, 46, 0.58));
}

.page-contact .contact-brief__title {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 27px);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.28;
}

.page-contact .brief-list {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-contact .brief-list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  font-weight: 300;
  line-height: 1.72;
  color: rgba(233, 238, 247, 0.66);
}

.page-contact .brief-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.58em;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 1px solid var(--cyan);
}

.page-contact .brief-list strong {
  color: var(--moon);
  font-weight: 600;
}

.page-contact .contact-brief__media {
  margin: 22px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-700);
}

.page-contact .contact-brief__foot {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  line-height: 1.6;
  color: rgba(233, 238, 247, 0.42);
}

@media (min-width: 980px) {
  .page-contact .contact-lanes__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 400px);
    align-items: start;
  }

  .page-contact .contact-brief {
    margin-top: 54px;
  }
}

/* ---------- 合作方向 ---------- */

.page-contact .contact-partner {
  margin-top: clamp(52px, 9vw, 116px);
}

.page-contact .contact-partner__heading {
  margin: 12px 0 clamp(24px, 4vw, 40px);
  max-width: 20ch;
  font-size: clamp(26px, 4.4vw, 44px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.14;
}

.page-contact .partner-grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
}

.page-contact .partner-blob {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(24px, 3.2vw, 38px);
  border: 1px solid var(--line);
  background: var(--ink-800);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-contact .partner-blob--a {
  border-radius: 48px 20px 20px 20px;
  background: linear-gradient(150deg, rgba(61, 227, 206, 0.14), rgba(12, 18, 32, 0.95) 62%);
}

.page-contact .partner-blob--b {
  border-radius: 20px 48px 20px 20px;
  background: linear-gradient(150deg, rgba(255, 138, 61, 0.14), rgba(12, 18, 32, 0.95) 62%);
}

.page-contact .partner-blob--c {
  border-radius: 20px 20px 20px 48px;
  background: linear-gradient(150deg, rgba(124, 92, 255, 0.17), rgba(12, 18, 32, 0.95) 62%);
}

.page-contact .partner-blob:hover {
  border-color: rgba(61, 227, 206, 0.45);
  transform: translateY(-2px);
}

.page-contact .partner-blob__num {
  color: rgba(233, 238, 247, 0.4);
  letter-spacing: 0.2em;
}

.page-contact .partner-blob h3 {
  margin: 6px 0 0;
  font-size: clamp(19px, 2.4vw, 23px);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-contact .partner-blob p {
  margin: 0;
  font-size: 15px;
  font-weight: 300;
  line-height: 1.74;
  color: rgba(233, 238, 247, 0.6);
}

.page-contact .partner-blob__hint {
  margin-top: auto;
  padding-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: rgba(61, 227, 206, 0.6);
  opacity: 0.75;
  transition: opacity 0.3s var(--ease);
}

.page-contact .partner-blob:hover .partner-blob__hint {
  opacity: 1;
}

.page-contact .partner-foot {
  margin: clamp(24px, 4vw, 40px) 0 0;
  max-width: 62ch;
  font-size: 15px;
  font-weight: 300;
  line-height: 1.78;
  color: rgba(233, 238, 247, 0.5);
}

@media (min-width: 820px) {
  .page-contact .partner-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .partner-blob--a { border-radius: 88px 22px 22px 22px; }
  .page-contact .partner-blob--b { border-radius: 22px 88px 22px 22px; }
  .page-contact .partner-blob--c { border-radius: 22px 22px 22px 88px; }
}

/* ---------- 先行阅读 ---------- */

.page-contact .contact-more {
  margin-top: clamp(52px, 9vw, 116px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-contact .contact-more__heading {
  margin: 0 0 clamp(18px, 3vw, 28px);
  font-size: clamp(21px, 3.2vw, 30px);
  font-weight: 800;
  letter-spacing: -0.015em;
}

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

.page-contact .more-list a {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  transition: border-color 0.25s var(--ease);
}

.page-contact .more-list li:first-child a {
  border-top: 1px solid var(--line);
}

.page-contact .more-list__label {
  font-size: clamp(15px, 1.9vw, 17px);
  font-weight: 600;
  color: var(--moon);
  transition: color 0.25s var(--ease);
}

.page-contact .more-list__note {
  margin-left: auto;
  font-size: 13px;
  font-weight: 300;
  color: rgba(233, 238, 247, 0.4);
}

.page-contact .more-list a:hover {
  border-color: rgba(61, 227, 206, 0.42);
}

.page-contact .more-list a:hover .more-list__label {
  color: var(--cyan);
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .partner-blob,
  .page-contact .partner-blob__hint,
  .page-contact .more-list a,
  .page-contact .more-list__label {
    transition: none;
  }

  .page-contact .partner-blob:hover {
    transform: none;
  }
}