.page-contact {
  --contact-accent: var(--fluorescent-green);
  --contact-alert: var(--orange-red);
  --contact-soft-line: rgba(255, 255, 255, 0.14);
  --contact-bedrock: var(--deep-blue);
  --contact-paper: var(--white);
  --contact-paper-ink: var(--dark-gray);
  --contact-muted: var(--mid-gray);
  --contact-caption: var(--blue-tint);
  background: var(--contact-bedrock);
  color: var(--white);
}

/* ===== 首屏：明信片欢迎视觉 ===== */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding: 40px 0 64px;
}
.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -16%;
  right: -10%;
  width: 42%;
  height: 68%;
  background: linear-gradient(135deg, transparent 0 44%, rgba(57, 255, 20, 0.12) 44% 52%, transparent 52% 100%);
  pointer-events: none;
}
.page-contact .contact-hero-grid {
  display: grid;
  gap: 36px;
  position: relative;
  z-index: 1;
}

/* 明信片视觉帧 */
.page-contact .contact-visual-frame {
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 560px;
  width: 100%;
  margin-inline: auto;
  overflow: hidden;
  background: var(--navy-black);
  clip-path: polygon(0 0, calc(100% - 3.2rem) 0, 100% 3.2rem, 100% 100%, 0 100%);
}
.page-contact .contact-visual-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.page-contact .contact-visual-stamp {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 1;
  width: 92px;
  height: 92px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 10px;
  border: 3px dashed rgba(57, 255, 20, 0.85);
  border-radius: 50%;
  background: rgba(2, 5, 10, 0.52);
  color: var(--white);
  font-size: 11px;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.14em;
}

/* 首屏文案区 */
.page-contact .contact-hero-copy {
  max-width: 680px;
}
.page-contact .contact-hero-kicker {
  margin: 22px 0 10px;
  color: var(--contact-accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}
.page-contact .contact-hero-title {
  margin: 0 0 18px;
  font-family: var(--font-headline);
  font-style: italic;
  font-size: clamp(2rem, 6vw, 4.4rem);
  line-height: 1.04;
  letter-spacing: 0.01em;
}
.page-contact .contact-hero-title-divider {
  color: var(--contact-accent);
  font-style: normal;
  margin: 0 0.15em;
}
.page-contact .contact-hero-lead {
  max-width: 56ch;
  margin: 0 0 26px;
  color: var(--light-gray);
  font-size: 1rem;
  line-height: 1.85;
}

/* 邮箱主展示块 */
.page-contact .contact-mail-primary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  border: 1px solid var(--contact-soft-line);
  background: rgba(255, 255, 255, 0.04);
}
.page-contact .contact-mail-primary-label {
  color: var(--contact-caption);
  font-size: 13px;
  letter-spacing: 0.12em;
}
.page-contact .contact-mail-primary-value {
  font-family: var(--font-headline);
  font-size: clamp(1.1rem, 3vw, 1.6rem);
  letter-spacing: 0.04em;
  color: var(--white);
  word-break: break-all;
}
.page-contact .contact-mail-copy {
  margin-left: auto;
  padding: 8px 16px;
  border: 1px solid var(--contact-accent);
  border-radius: 0;
  background: transparent;
  color: var(--contact-accent);
  font-size: 13px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.page-contact .contact-mail-copy:hover,
.page-contact .contact-mail-copy:focus-visible {
  background: var(--contact-accent);
  color: var(--navy-black);
}

/* ===== 联系渠道：大型字母索引卡 ===== */
.page-contact .contact-channel {
  position: relative;
  padding: 64px 0;
  overflow: hidden;
}
.page-contact .contact-channel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(135deg, transparent 0 18px, rgba(57, 255, 20, 0.035) 18px 19px);
  pointer-events: none;
}
.page-contact .contact-channel::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(57, 255, 20, 0.55), transparent);
}
.page-contact .contact-channel-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 22px;
  margin-top: 32px;
}
.page-contact .contact-channel-card {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 280px;
  padding: 28px 24px 96px;
  background: var(--contact-paper);
  color: var(--contact-paper-ink);
  border-top: 8px solid var(--contact-accent);
  box-shadow: 16px 18px 0 rgba(2, 5, 10, 0.36);
}
.page-contact .contact-channel-card-phone {
  border-top-color: var(--contact-alert);
}
.page-contact .contact-channel-card-addr {
  border-top-color: var(--contact-caption);
}
.page-contact .contact-channel-letter {
  position: absolute;
  right: 12px;
  bottom: -28px;
  font-family: var(--font-headline);
  font-style: italic;
  font-size: 190px;
  line-height: 1;
  color: rgba(10, 25, 47, 0.07);
  pointer-events: none;
  user-select: none;
}
.page-contact .contact-channel-title {
  margin: 18px 0 10px;
  font-family: var(--font-headline);
  font-size: 1.6rem;
  letter-spacing: 0.04em;
}
.page-contact .contact-channel-desc {
  margin: 0 0 14px;
  color: var(--contact-muted);
  font-size: 0.94rem;
  line-height: 1.75;
}
.page-contact .contact-channel-value {
  margin: auto 0 0;
  padding-left: 12px;
  border-left: 3px solid var(--contact-accent);
  color: var(--deep-blue);
  font-family: var(--font-headline);
  font-size: 1.2rem;
  line-height: 1.6;
  letter-spacing: 0.02em;
  word-break: break-all;
}
.page-contact .contact-channel-card-phone .contact-channel-value {
  border-left-color: var(--contact-alert);
}
.page-contact .contact-channel-card-addr .contact-channel-value {
  border-left-color: var(--contact-caption);
}

/* ===== 响应保证：大号码横带 ===== */
.page-contact .contact-response {
  padding: 48px 0;
  background: var(--navy-black);
  border-block: 1px solid rgba(57, 255, 20, 0.3);
}
.page-contact .contact-response-inner {
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.page-contact .contact-response-num {
  flex-shrink: 0;
  font-family: var(--font-headline);
  font-style: italic;
  font-size: clamp(84px, 16vw, 168px);
  line-height: 0.85;
  color: rgba(57, 255, 20, 0.14);
  -webkit-text-stroke: 1.5px var(--contact-accent);
  user-select: none;
}
.page-contact .contact-response-main {
  border-left: 2px solid var(--contact-accent);
  padding-left: 22px;
}
.page-contact .contact-response-title {
  margin: 0 0 8px;
  font-family: var(--font-headline);
  font-size: 1.9rem;
  letter-spacing: 0.04em;
}
.page-contact .contact-response-text {
  max-width: 60ch;
  margin: 0 0 18px;
  color: var(--light-gray);
  line-height: 1.85;
}
.page-contact .contact-response-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ===== 商务合作：不对称双栏 ===== */
.page-contact .contact-coop {
  padding: 64px 0;
}
.page-contact .contact-coop-grid {
  display: grid;
  gap: 40px;
}
.page-contact .contact-coop-lead {
  max-width: 52ch;
  margin: 0 0 24px;
  color: var(--contact-caption);
  font-size: 1.05rem;
  line-height: 1.85;
}
.page-contact .contact-coop-list {
  display: grid;
  gap: 14px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}
.page-contact .contact-coop-list li {
  position: relative;
  padding: 18px 20px 18px 30px;
  background: rgba(255, 255, 255, 0.035);
  border-left: 2px solid var(--contact-accent);
  color: var(--light-gray);
  line-height: 1.75;
}
.page-contact .contact-coop-list li::before {
  content: "→";
  position: absolute;
  left: 10px;
  top: 18px;
  color: var(--contact-accent);
}
.page-contact .contact-coop-note {
  margin: 0;
  color: var(--contact-caption);
  font-size: 0.9rem;
}
.page-contact .contact-coop-rail {
  display: grid;
  gap: 14px;
  align-content: start;
}
.page-contact .contact-coop-stat {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  border: 1px solid rgba(57, 255, 20, 0.18);
  background: rgba(57, 255, 20, 0.05);
}
.page-contact .contact-coop-stat .data-value {
  font-family: var(--font-headline);
  font-size: 2.2rem;
  line-height: 1;
  color: var(--contact-accent);
}
.page-contact .contact-coop-rail .btn {
  margin-top: 6px;
}

/* ===== 意见反馈：图文明信片 ===== */
.page-contact .contact-feedback {
  padding: 8px 0 80px;
}
.page-contact .contact-feedback-grid {
  display: grid;
  gap: 36px;
}
.page-contact .contact-feedback-visual {
  position: relative;
  aspect-ratio: 6 / 4;
  max-width: 620px;
  width: 100%;
  overflow: hidden;
  background: var(--navy-black);
}
.page-contact .contact-feedback-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.page-contact .contact-feedback-copy {
  max-width: 640px;
}
.page-contact .contact-feedback-kicker {
  margin: 0 0 10px;
  color: var(--contact-alert);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.page-contact .contact-feedback-title {
  margin: 0 0 18px;
  font-family: var(--font-headline);
  font-style: italic;
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  line-height: 1.12;
  letter-spacing: 0.02em;
}
.page-contact .contact-feedback-text {
  margin: 0 0 16px;
  color: var(--light-gray);
  line-height: 1.85;
}
.page-contact .contact-feedback-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

/* ===== 响应式：平板与桌面 ===== */
@media (min-width: 760px) {
  .page-contact .contact-response-inner {
    flex-direction: row;
    align-items: center;
    gap: 56px;
  }
}

@media (min-width: 800px) {
  .page-contact .contact-channel-grid {
    grid-template-columns: 7fr 4fr 5fr;
    align-items: stretch;
  }
}

@media (min-width: 860px) {
  .page-contact .contact-feedback-grid {
    grid-template-columns: 5fr 6fr;
    align-items: center;
  }
}

@media (min-width: 920px) {
  .page-contact .contact-coop-grid {
    grid-template-columns: 7fr 4fr;
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-hero-grid {
    grid-template-columns: 5fr 7fr;
    align-items: center;
    gap: 56px;
  }
  .page-contact .contact-hero {
    padding: 56px 0 76px;
  }
  .page-contact .contact-hero-copy {
    padding-left: 8px;
  }
}