.page-contact {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  overflow-x: hidden;
  line-height: 1.7;
}

.page-contact .container {
  width: 100%;
  max-width: 1240px;
  margin-inline: auto;
  padding-inline: 1.25rem;
}

/* ============ 首屏 ============ */
.page-contact .contact-hero {
  position: relative;
  z-index: 1;
  padding: 2rem 0 6rem;
  background: linear-gradient(135deg, var(--jade) 0%, var(--indigo) 52%, var(--bg) 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 3rem), 0 100%);
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(182, 255, 60, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(182, 255, 60, 0.14) 1px, transparent 1px);
  background-size: 44px 44px;
  background-position: -12px -12px;
  opacity: 0.4;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 78%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 78%);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  right: -16%;
  top: 12%;
  width: 52%;
  height: 34%;
  background: var(--green);
  opacity: 0.12;
  transform: rotate(16deg);
  pointer-events: none;
}

.page-contact .contact-hero .breadcrumb {
  position: relative;
  z-index: 2;
  margin-bottom: 3.25rem;
}

.page-contact .contact-hero__layout {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 2.75rem;
  align-items: center;
}

.page-contact .contact-hero__intro .eyebrow {
  color: var(--green);
  margin-bottom: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.8rem;
}

.page-contact .contact-hero__intro h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.1rem, 9vw, 4.6rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 1.5rem;
}

.page-contact .contact-hero__accent {
  color: var(--green);
}

.page-contact .contact-hero__desc {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.85;
  max-width: 36em;
}

.page-contact .contact-hero__mail {
  position: relative;
  background: rgba(11, 7, 22, 0.86);
  border: 1px solid var(--border);
  border-left: 6px solid var(--green);
  padding: 1.75rem 1.5rem 0;
  transform: rotate(-0.6deg);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.35);
}

.page-contact .contact-hero__mailbox {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  padding-bottom: 1.75rem;
}

.page-contact .contact-hero__mail-kind {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--green);
}

.page-contact .contact-hero__mail-addr {
  font-family: "SFMono-Regular", "Cascadia Code", "Roboto Mono", Consolas, monospace;
  font-size: clamp(1.2rem, 4.6vw, 2.6rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
  text-decoration: none;
  border-bottom: 4px solid var(--green);
  padding-bottom: 0.22em;
  word-break: break-all;
  transition: background 0.2s ease, color 0.2s ease;
}

.page-contact .contact-hero__mail-addr:hover {
  background: var(--green);
  color: #0a0a0a;
}

.page-contact .contact-hero__mail-scope {
  font-size: 0.84rem;
  color: var(--muted);
}

.page-contact .contact-hero__figure {
  margin: 0 -1.5rem;
}

.page-contact .contact-hero__img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 240px;
  object-fit: cover;
  object-position: center;
  clip-path: polygon(0 1.25rem, 100% 0, 100% 100%, 0 100%);
}

/* ============ 数据带 ============ */
.page-contact .contact-stats {
  position: relative;
  z-index: 3;
  margin-top: -2.75rem;
}

.page-contact .contact-stats__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.page-contact .contact-stats__item {
  background: var(--surface);
  padding: 1.35rem 0.75rem;
  text-align: center;
}

.page-contact .contact-stats__num {
  font-family: var(--font-heading);
  font-size: 1.9rem;
  font-weight: 900;
  color: var(--green);
  line-height: 1.1;
  margin-bottom: 0.2rem;
}

.page-contact .contact-stats__label {
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.05em;
}

/* ============ 邮箱档案区 ============ */
.page-contact .contact-mailbox {
  padding: 4.5rem 0 4.75rem;
}

.page-contact .contact-mailbox__head {
  max-width: 40em;
  margin-bottom: 2.5rem;
}

.page-contact .contact-mailbox__head .eyebrow {
  color: var(--orange);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.page-contact .contact-mailbox__head h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.85rem, 5vw, 3rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0.75rem 0 1rem;
}

.page-contact .contact-mailbox__lead {
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.85;
}

.page-contact .contact-mailbox__grid {
  display: grid;
  gap: 1.5rem;
}

.page-contact .contact-mailcard {
  position: relative;
  background: var(--surface);
  border: 1px solid rgba(182, 255, 60, 0.16);
  padding: 2rem 1.75rem 2.25rem;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 1.5rem), 0 100%);
}

.page-contact .contact-mailcard::before {
  content: "";
  position: absolute;
  top: 0;
  left: 1.5rem;
  width: 3.5rem;
  height: 5px;
  background: var(--green);
}

.page-contact .contact-mailcard--support::before {
  background: var(--orange);
}

.page-contact .contact-mailcard .tag {
  display: inline-block;
  margin-bottom: 1.25rem;
}

.page-contact .contact-mailcard__mail {
  font-family: "SFMono-Regular", "Cascadia Code", "Roboto Mono", Consolas, monospace;
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1.3;
  word-break: break-all;
  margin: 0 0 0.75rem;
}

.page-contact .contact-mailcard__desc {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.8;
  margin: 0 0 1.5rem;
}

.page-contact .contact-mailcard .btn {
  margin-top: auto;
}

/* ============ 反馈内容 ============ */
.page-contact .contact-feedback {
  position: relative;
  padding: 5.5rem 0 6.5rem;
  background: linear-gradient(150deg, var(--wine) 0%, #3a0b18 65%, var(--bg) 100%);
  clip-path: polygon(0 2rem, 100% 0, 100% calc(100% - 2rem), 0 100%);
}

.page-contact .contact-feedback__head {
  max-width: 38em;
  margin-bottom: 2.75rem;
}

.page-contact .contact-feedback__head .eyebrow {
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.page-contact .contact-feedback__head h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.85rem, 5vw, 3rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0.75rem 0 1rem;
}

.page-contact .contact-feedback__head p {
  color: rgba(245, 242, 255, 0.82);
  font-size: 0.94rem;
  line-height: 1.85;
}

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

.page-contact .contact-feedback__item {
  position: relative;
  background: rgba(11, 7, 22, 0.5);
  border: 1px solid rgba(182, 255, 60, 0.16);
  padding: 1.75rem 1.5rem 1.5rem 2rem;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.page-contact .contact-feedback__item:hover {
  background: rgba(11, 7, 22, 0.78);
  border-color: var(--green);
}

.page-contact .contact-feedback__index {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.86rem;
  font-weight: 900;
  color: var(--orange);
  letter-spacing: 0.12em;
  margin-bottom: 0.75rem;
}

.page-contact .contact-feedback__item h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
  line-height: 1.4;
}

.page-contact .contact-feedback__item p {
  font-size: 0.86rem;
  color: rgba(245, 242, 255, 0.74);
  line-height: 1.75;
  margin: 0;
}

.page-contact .contact-feedback__more {
  margin-top: 2.5rem;
  border: 1px dashed var(--border);
  background: rgba(11, 7, 22, 0.35);
}

.page-contact .contact-feedback__more summary {
  cursor: pointer;
  padding: 1.25rem 1.5rem;
  font-weight: 700;
  font-size: 0.94rem;
  list-style: none;
  -webkit-appearance: none;
  appearance: none;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

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

.page-contact .contact-feedback__more summary::before {
  content: "+";
  display: inline-grid;
  place-items: center;
  width: 1.6rem;
  height: 1.6rem;
  background: var(--green);
  color: #0a0a0a;
  font-weight: 900;
  font-size: 1.1rem;
  line-height: 1;
  flex: 0 0 auto;
}

.page-contact .contact-feedback__more[open] summary::before {
  content: "−";
}

.page-contact .contact-feedback__more-body {
  padding: 0 1.5rem 1.5rem 3.85rem;
  display: grid;
  gap: 1rem;
}

.page-contact .contact-feedback__more-body p {
  font-size: 0.88rem;
  color: rgba(245, 242, 255, 0.8);
  line-height: 1.8;
  margin: 0;
}

/* ============ 商务合作 ============ */
.page-contact .contact-biz {
  position: relative;
  background: var(--indigo);
  padding: 5rem 0;
  overflow: hidden;
}

.page-contact .contact-biz::after {
  content: "";
  position: absolute;
  left: -10%;
  bottom: -30%;
  width: 60%;
  height: 80%;
  background: var(--green);
  opacity: 0.06;
  transform: rotate(-14deg);
  pointer-events: none;
}

.page-contact .contact-biz__layout {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 3rem;
}

.page-contact .contact-biz__text .eyebrow {
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.page-contact .contact-biz__text h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.85rem, 5vw, 3rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0.75rem 0 1.25rem;
}

.page-contact .contact-biz__text p {
  color: rgba(245, 242, 255, 0.82);
  font-size: 0.94rem;
  line-height: 1.85;
  max-width: 36em;
}

.page-contact .contact-biz__text strong {
  color: var(--green);
  font-weight: 700;
}

.page-contact .contact-biz__note {
  margin-top: 1rem;
}

.page-contact .contact-biz__guide {
  background: rgba(11, 7, 22, 0.5);
  border: 1px solid var(--border);
  padding: 1.75rem 1.5rem;
}

.page-contact .contact-biz__guide h3 {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(182, 255, 60, 0.25);
}

.page-contact .contact-biz__guide ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.page-contact .contact-biz__guide a {
  color: var(--text);
  text-decoration: none;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.page-contact .contact-biz__guide a::before {
  content: "→";
  color: var(--orange);
  font-weight: 700;
  flex: 0 0 auto;
}

.page-contact .contact-biz__guide a:hover {
  border-bottom-color: var(--green);
  color: var(--green);
}

/* ============ 地址与备案 ============ */
.page-contact .contact-address {
  padding: 4.5rem 0 6.5rem;
  background: var(--bg);
}

.page-contact .contact-address__layout {
  display: grid;
  gap: 2.5rem;
}

.page-contact .contact-address__map {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(182, 255, 60, 0.2);
  transform: rotate(-0.5deg);
}

.page-contact .contact-address__img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 320px;
  object-fit: cover;
  object-position: center;
}

.page-contact .contact-address__info .eyebrow {
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.page-contact .contact-address__info h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.85rem, 5vw, 3rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0.75rem 0 1.25rem;
}

.page-contact .contact-address__addr {
  font-style: normal;
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.5;
  margin: 0 0 0.5rem;
  color: var(--text);
}

.page-contact .contact-address__note {
  font-size: 0.86rem;
  color: var(--muted);
  line-height: 1.7;
  margin: 0 0 1.25rem;
}

.page-contact .contact-address__phone {
  margin: 0 0 0.25rem;
}

.page-contact .contact-address__phone a {
  font-family: "SFMono-Regular", "Cascadia Code", "Roboto Mono", Consolas, monospace;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--green);
  text-decoration: none;
  border-bottom: 2px solid transparent;
}

.page-contact .contact-address__phone a:hover {
  border-bottom-color: var(--green);
}

.page-contact .contact-address__hours {
  font-size: 0.86rem;
  color: var(--muted);
  margin: 0 0 2rem;
}

.page-contact .contact-address__icp {
  font-family: var(--font-heading);
  font-size: clamp(2.6rem, 12vw, 7.5rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0.08em;
  text-align: right;
  text-transform: uppercase;
  color: rgba(245, 242, 255, 0.14);
  -webkit-text-stroke: 1px rgba(245, 242, 255, 0.16);
  text-stroke: 1px rgba(245, 242, 255, 0.16);
  margin-top: 3.5rem;
  word-break: break-all;
}

/* ============ 桌面端 ============ */
@media (min-width: 640px) {
  .page-contact .contact-feedback__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .page-contact .container {
    padding-inline: 2rem;
  }

  .page-contact .contact-hero {
    padding: 3rem 0 8rem;
  }

  .page-contact .contact-hero__layout {
    grid-template-columns: 5fr 7fr;
    gap: 4.5rem;
    align-items: center;
  }

  .page-contact .contact-hero__desc {
    font-size: 1rem;
  }

  .page-contact .contact-hero__mail {
    padding: 2.25rem 2rem 0;
  }

  .page-contact .contact-hero__figure {
    margin: 0 -2rem;
  }

  .page-contact .contact-hero__img {
    max-height: 260px;
  }

  .page-contact .contact-stats__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-contact .contact-stats__num {
    font-size: 2.4rem;
  }

  .page-contact .contact-mailbox__grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .page-contact .contact-feedback {
    padding: 6.5rem 0 7.5rem;
  }

  .page-contact .contact-feedback__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
  }

  .page-contact .contact-feedback__more-body {
    padding-right: 3rem;
  }

  .page-contact .contact-biz {
    padding: 6rem 0;
  }

  .page-contact .contact-biz__layout {
    grid-template-columns: 7fr 5fr;
    gap: 5rem;
    align-items: start;
  }

  .page-contact .contact-address {
    padding: 6rem 0 7rem;
  }

  .page-contact .contact-address__layout {
    grid-template-columns: 1fr 1fr;
    gap: 4.5rem;
    align-items: center;
  }

  .page-contact .contact-address__img {
    max-height: 400px;
  }
}