.page-contact {
  --postcard-bg: rgba(34, 17, 66, 0.82);
  --postcard-bg-hover: rgba(42, 23, 82, 0.92);
  --grid-line: rgba(122, 90, 248, 0.16);
  --cut-size: 22px;
  position: relative;
  color: var(--primary-text);
  background:
    radial-gradient(1100px 520px at 88% -8%, rgba(0, 229, 255, 0.14), transparent 60%),
    radial-gradient(800px 480px at -8% 28%, rgba(255, 92, 41, 0.12), transparent 55%),
    var(--primary-bg);
  overflow-x: hidden;
  padding-bottom: 4rem;
}

.page-contact .container {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

/* 面包屑 */
.page-contact .breadcrumbs-wrap {
  padding-top: 1.5rem;
}

.page-contact .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--secondary-text);
}

.page-contact .breadcrumbs a {
  color: var(--accent-cyan);
  text-decoration: none;
}

.page-contact .breadcrumbs a:hover {
  text-decoration: underline;
}

.page-contact .breadcrumbs__sep {
  color: var(--border-glow);
}

/* 首屏明信片 */
.page-contact .contact-hero {
  position: relative;
  margin-top: 1rem;
  padding: 3rem 1.5rem 3.5rem;
  background-color: rgba(20, 10, 38, 0.72);
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 34px 34px;
  clip-path: polygon(0 0, calc(100% - 30px) 0, 100% 30px, 100% 100%, 30px 100%, 0 calc(100% - 30px));
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.3);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 180px;
  height: 4px;
  background: var(--accent-orange);
  box-shadow: 0 0 18px var(--accent-orange);
}

.page-contact .contact-hero__overline {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--heading-font);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--accent-cyan);
  text-transform: uppercase;
}

.page-contact .contact-hero__overline::before {
  content: "";
  width: 38px;
  height: 2px;
  background: var(--accent-orange);
}

.page-contact .contact-hero h1 {
  margin: 0.85rem 0 1rem;
  font-family: var(--heading-font);
  font-size: clamp(2.8rem, 7vw, 4.8rem);
  line-height: 1.02;
  letter-spacing: 0.01em;
  color: var(--primary-text);
}

.page-contact .contact-hero__lede {
  max-width: 620px;
  margin: 0;
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--secondary-text);
}

/* 通用章节编号 */
.page-contact .section__num {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.6rem 0.15rem 0.45rem;
  margin-bottom: 0.8rem;
  font-family: var(--heading-font);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--accent-orange);
  border: 1px solid rgba(255, 92, 41, 0.65);
  clip-path: polygon(0 0, calc(100% - 9px) 0, 100% 9px, 100% 100%, 0 100%);
}

.page-contact .section__head {
  margin-bottom: 1.75rem;
}

.page-contact .section__head h2 {
  margin: 0 0 0.5rem;
  font-family: var(--heading-font);
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.1;
  color: var(--primary-text);
}

.page-contact .section__lead {
  margin: 0;
  color: var(--secondary-text);
  line-height: 1.6;
  max-width: 640px;
}

/* 联系渠道 */
.page-contact .contact-channels {
  padding-top: 3.5rem;
}

.page-contact .contact-channels__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.page-contact .postcard {
  position: relative;
  padding: 2rem 1.5rem 1.75rem;
  background:
    linear-gradient(rgba(122, 90, 248, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122, 90, 248, 0.05) 1px, transparent 1px),
    linear-gradient(150deg, var(--postcard-bg), rgba(20, 10, 38, 0.92));
  background-size: 22px 22px, 22px 22px, 100% 100%;
  border: 1px solid rgba(122, 90, 248, 0.38);
  clip-path: polygon(0 0, calc(100% - var(--cut-size)) 0, 100% var(--cut-size), 100% 100%, var(--cut-size) 100%, 0 calc(100% - var(--cut-size)));
  transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
}

.page-contact .postcard::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-cyan), transparent 60%);
  opacity: 0.5;
}

.page-contact .postcard--mail::before {
  background: linear-gradient(90deg, var(--accent-orange), transparent 60%);
}

.page-contact .postcard--address::before {
  background: linear-gradient(90deg, var(--border-glow), transparent 60%);
}

.page-contact .postcard:hover {
  border-color: var(--accent-cyan);
  box-shadow: 0 14px 44px rgba(0, 229, 255, 0.12), var(--shadow-card);
}

.page-contact .postcard__index {
  position: absolute;
  top: 0.6rem;
  right: 1rem;
  font-family: var(--heading-font);
  font-size: 2.75rem;
  line-height: 1;
  color: rgba(255, 92, 41, 0.32);
  pointer-events: none;
}

.page-contact .postcard__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  width: 46px;
  height: 46px;
  margin-bottom: 1rem;
  border: 1px solid currentColor;
  border-radius: 14px;
  background: rgba(0, 229, 255, 0.07);
  color: var(--accent-cyan);
}

.page-contact .postcard--phone .postcard__icon {
  color: var(--accent-orange);
  background: rgba(255, 92, 41, 0.08);
}

.page-contact .postcard--address .postcard__icon {
  color: var(--border-glow);
  background: rgba(122, 90, 248, 0.09);
}

.page-contact .postcard__icon--phone::before {
  content: "";
  width: 15px;
  height: 22px;
  border: 2.5px solid currentColor;
  border-radius: 12px 12px 5px 5px;
  transform: rotate(45deg);
  background: rgba(255, 92, 41, 0.2);
}

.page-contact .postcard__icon--mail::before {
  content: "";
  width: 24px;
  height: 16px;
  border: 2px solid currentColor;
  border-radius: 3px;
  background: rgba(0, 229, 255, 0.14);
}

.page-contact .postcard__icon--mail::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 24px;
  height: 16px;
  transform: translate(-50%, -50%);
  background: linear-gradient(135deg, transparent 44%, currentColor 45%, currentColor 54%, transparent 55%);
}

.page-contact .postcard__icon--pin::before {
  content: "";
  width: 20px;
  height: 20px;
  background: currentColor;
  clip-path: polygon(0 0, 100% 0, 100% 68%, 50% 100%, 0 68%);
}

.page-contact .postcard__icon--pin::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 32%;
  width: 8px;
  height: 8px;
  background: var(--primary-bg);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.page-contact .postcard h3 {
  margin: 0 0 0.6rem;
  font-family: var(--heading-font);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--primary-text);
}

.page-contact .postcard__value {
  display: block;
  margin-bottom: 0.75rem;
  font-family: var(--heading-font);
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--accent-orange);
  text-decoration: none;
  word-break: break-word;
}

.page-contact .postcard__value:hover {
  color: var(--accent-cyan);
}

.page-contact .postcard__note {
  margin: 0 0 1.1rem;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--secondary-text);
}

.page-contact .contact-tag {
  display: inline-block;
  padding: 0.4rem 0.7rem;
  font-family: var(--heading-font);
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.08em;
  color: var(--primary-text);
  background: rgba(122, 90, 248, 0.14);
  border-left: 3px solid var(--accent-cyan);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
}

.page-contact .contact-channels__visual {
  position: relative;
  overflow: hidden;
  width: 100%;
  min-height: 300px;
  margin-top: 0.5rem;
  background: var(--secondary-bg);
  border: 1px solid rgba(122, 90, 248, 0.42);
  clip-path: polygon(0 0, calc(100% - 32px) 0, 100% 32px, 100% 100%, 32px 100%, 0 calc(100% - 32px));
}

.page-contact .contact-channels__visual img,
.page-contact .feedback-flow__visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 辉光分隔线 */
.page-contact .glow-divider {
  height: 1px;
  margin: 3.5rem auto;
  max-width: 960px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), var(--border-glow), var(--accent-orange), transparent);
}

/* FAQ 优先 */
.page-contact .faq-priority {
  padding-top: 0.5rem;
}

.page-contact .faq-priority__stack {
  display: grid;
  gap: 1rem;
  max-width: 900px;
  margin-inline: auto;
}

.page-contact .faq-item {
  background: var(--secondary-bg);
  border: 1px solid rgba(122, 90, 248, 0.35);
  border-left: 4px solid var(--accent-orange);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
  transition: border-color 0.25s ease, background-color 0.25s ease;
}

.page-contact .faq-item[open] {
  border-left-color: var(--accent-cyan);
  background: rgba(42, 23, 82, 0.92);
}

.page-contact .faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.3rem 1.5rem;
  cursor: pointer;
  list-style: none;
}

.page-contact .faq-item summary::-webkit-details-marker {
  display: none;
}

.page-contact .faq-item summary::after {
  content: "+";
  flex: 0 0 auto;
  font-size: 1.7rem;
  font-weight: 400;
  line-height: 1;
  color: var(--accent-orange);
  transition: transform 0.25s ease, color 0.25s ease;
}

.page-contact .faq-item[open] summary::after {
  transform: rotate(45deg);
  color: var(--accent-cyan);
}

.page-contact .faq-item__title {
  margin: 0;
  font-family: var(--heading-font);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--primary-text);
}

.page-contact .faq-item__body {
  padding: 0 1.5rem 1.35rem;
  color: var(--secondary-text);
  font-size: 0.9375rem;
  line-height: 1.75;
}

.page-contact .faq-item__body p {
  margin: 0 0 0.75rem;
}

.page-contact .faq-item__body a {
  color: var(--accent-cyan);
  font-weight: 600;
  text-decoration: none;
}

.page-contact .faq-item__body a:hover {
  text-decoration: underline;
}

/* 反馈流程 */
.page-contact .feedback-flow {
  padding-top: 1rem;
}

.page-contact .feedback-flow__layout {
  display: grid;
  gap: 2rem;
}

.page-contact .feedback-flow__steps {
  display: grid;
  gap: 1rem;
}

.page-contact .flow-step {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: 0 1rem;
  padding: 1.3rem 1.25rem;
  background: rgba(34, 17, 66, 0.62);
  border: 1px solid rgba(122, 90, 248, 0.28);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
}

.page-contact .flow-step__num {
  grid-row: span 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  font-family: var(--heading-font);
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  background: var(--accent-orange);
  clip-path: polygon(0 0, 100% 0, 100% 70%, 50% 100%, 0 70%);
}

.page-contact .flow-step h3 {
  margin: 0.2rem 0 0.4rem;
  font-family: var(--heading-font);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--primary-text);
}

.page-contact .flow-step p {
  grid-column: 2;
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--secondary-text);
}

.page-contact .feedback-flow__aside {
  display: grid;
  gap: 1.25rem;
}

.page-contact .feedback-flow__visual {
  position: relative;
  overflow: hidden;
  min-height: 260px;
  background: var(--secondary-bg);
  border: 1px solid rgba(122, 90, 248, 0.4);
  clip-path: polygon(0 0, calc(100% - 30px) 0, 100% 30px, 100% 100%, 30px 100%, 0 calc(100% - 30px));
}

.page-contact .flow-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.page-contact .flow-meta__item {
  display: grid;
  align-content: center;
  gap: 0.3rem;
  min-height: 100px;
  padding: 1rem;
  background: var(--secondary-bg);
  border: 1px solid rgba(122, 90, 248, 0.3);
  text-align: center;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}

.page-contact .flow-meta__item strong {
  font-family: var(--heading-font);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--accent-orange);
}

.page-contact .flow-meta__item span {
  font-size: 0.8125rem;
  line-height: 1.4;
  color: var(--secondary-text);
}

/* 结尾备注 */
.page-contact .contact-note {
  max-width: 900px;
  margin-inline: auto;
  padding: 2rem 1.5rem;
  border-top: 1px solid rgba(122, 90, 248, 0.4);
  border-bottom: 1px solid rgba(122, 90, 248, 0.4);
  color: var(--secondary-text);
  line-height: 1.8;
}

.page-contact .contact-note__title {
  margin: 0 0 0.75rem;
  font-family: var(--heading-font);
  font-size: 1.5rem;
  color: var(--primary-text);
}

.page-contact .contact-note p {
  margin: 0.35rem 0;
}

.page-contact .contact-note a {
  color: var(--accent-cyan);
  font-weight: 600;
  text-decoration: none;
}

.page-contact .contact-note a:hover {
  text-decoration: underline;
}

/* 桌面端 */
@media (min-width: 900px) {
  .page-contact .contact-hero {
    padding: 4.5rem 3rem 5rem;
  }

  .page-contact .contact-channels__layout {
    grid-template-columns: repeat(3, 1fr);
    align-items: start;
    gap: 2rem;
  }

  .page-contact .postcard {
    padding: 2.25rem 1.75rem 2rem;
  }

  .page-contact .postcard--mail {
    transform: translateY(2rem);
  }

  .page-contact .postcard--address {
    transform: translateY(4rem);
  }

  .page-contact .postcard:hover {
    transform: translateY(-6px);
  }

  .page-contact .postcard--mail:hover {
    transform: translateY(calc(2rem - 6px));
  }

  .page-contact .postcard--address:hover {
    transform: translateY(calc(4rem - 6px));
  }

  .page-contact .contact-channels__visual {
    grid-column: 1 / -1;
    min-height: 440px;
    max-width: 92%;
    margin-inline: auto;
    margin-top: 2.5rem;
  }

  .page-contact .faq-priority__stack {
    grid-template-columns: 1fr 1fr;
    max-width: 1000px;
  }

  .page-contact .faq-item:first-child {
    grid-column: 1 / -1;
  }

  .page-contact .feedback-flow__layout {
    grid-template-columns: 1fr 1.05fr;
    align-items: center;
    gap: 2.5rem;
  }

  .page-contact .feedback-flow__visual {
    min-height: 340px;
  }
}

@media (min-width: 1200px) {
  .page-contact .contact-hero__lede {
    font-size: 1.125rem;
  }

  .page-contact .postcard__value {
    font-size: 1.45rem;
  }
}