.page-contact {
  --contact-mono: "JetBrains Mono", "SF Mono", "Cascadia Mono", Consolas, monospace;
  position: relative;
  background: var(--paper);
  color: var(--ink);
  overflow-x: hidden;
}

.page-contact .breadcrumb {
  max-width: var(--container);
  margin: 0 auto;
  padding: 1.25rem var(--gutter) 0;
}

.page-contact .contact-hero {
  position: relative;
  padding: 2.5rem var(--gutter) 3.5rem;
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 68%;
  height: 100%;
  background: linear-gradient(135deg, transparent 0%, transparent 38%, rgba(10, 92, 255, 0.12) 38.5%, rgba(10, 92, 255, 0.12) 100%);
  clip-path: polygon(28% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--blue) 0%, var(--blue) 42%, var(--orange) 42%, var(--orange) 55%, transparent 55%);
  opacity: 0.55;
  pointer-events: none;
}

.page-contact .contact-hero__container {
  position: relative;
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

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

.page-contact .contact-hero .section-kicker {
  color: var(--blue);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.8rem;
}

.page-contact .contact-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 7vw, 4.8rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0.75rem 0 1.25rem;
}

.page-contact .contact-hero__lead {
  font-size: 1.05rem;
  line-height: 1.75;
  color: rgba(22, 30, 46, 0.85);
  max-width: 580px;
}

.page-contact .contact-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.page-contact .contact-hero__stamp {
  display: none;
}

.page-contact .stamp-circle {
  width: 140px;
  height: 140px;
  border: 3px dashed var(--blue);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.2rem;
  transform: rotate(-12deg);
  background: var(--glass);
  position: relative;
}

.page-contact .stamp-circle::after {
  content: "";
  position: absolute;
  inset: 7px;
  border: 1px solid rgba(10, 92, 255, 0.3);
  border-radius: 50%;
  pointer-events: none;
}

.page-contact .stamp-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--blue);
  letter-spacing: 0.1em;
}

.page-contact .stamp-sub {
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  color: var(--orange);
}

.page-contact .stamp-code {
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  color: var(--ink);
  font-weight: 600;
}

/* 反馈渠道 */
.page-contact .contact-channels {
  padding: 3rem var(--gutter) 3.5rem;
  border-top: 1px solid var(--line);
  background: var(--paper);
}

.page-contact .contact-channels .container {
  max-width: var(--container);
  margin: 0 auto;
}

.page-contact .channels-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: start;
}

.page-contact .contact-channels h2,
.page-contact .contact-address h2,
.page-contact .contact-prep h2,
.page-contact .contact-response h2,
.page-contact .contact-demo h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0.5rem 0 1.5rem;
}

.page-contact .contact-channels .section-kicker {
  color: var(--blue);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.page-contact .channel-card {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 1.5rem;
  margin-bottom: 1rem;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.page-contact .channel-card:hover {
  box-shadow: 0 8px 24px rgba(22, 30, 46, 0.08);
  transform: translateY(-2px);
}

.page-contact .channel-card__label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(22, 30, 46, 0.55);
  margin-bottom: 0.5rem;
}

.page-contact .channel-card__value {
  display: block;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  word-break: break-all;
}

.page-contact .channel-card__value--email {
  font-family: var(--contact-mono);
  color: var(--blue);
  border-bottom: 2px solid rgba(10, 92, 255, 0.25);
  padding-bottom: 0.2rem;
  transition: border-color 0.2s ease;
}

.page-contact .channel-card__value--email:hover {
  border-bottom-color: var(--blue);
}

.page-contact .channel-card__value--phone {
  position: relative;
  cursor: pointer;
}

.page-contact .channel-card__value--phone::after {
  content: "点击拨打";
  position: absolute;
  right: 0;
  bottom: calc(100% + 0.4rem);
  background: var(--night);
  color: #ffffff;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.3rem 0.6rem;
  border-radius: 0.4rem;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  pointer-events: none;
  white-space: nowrap;
}

.page-contact .channel-card__value--phone:hover::after {
  opacity: 1;
  transform: translateY(0);
}

.page-contact .channel-card__desc {
  font-size: 0.875rem;
  color: rgba(22, 30, 46, 0.7);
  line-height: 1.65;
  margin-top: 0.75rem;
}

.page-contact .channels-note {
  font-size: 0.875rem;
  color: rgba(22, 30, 46, 0.55);
  margin-top: 0.5rem;
  padding-left: 1.25rem;
  border-left: 3px solid var(--orange);
}

.page-contact .contact-media {
  margin: 0;
  overflow: hidden;
  border-radius: 1rem;
  background: var(--ink);
}

.page-contact .contact-media__img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* 来信地址 */
.page-contact .contact-address {
  padding: 3rem var(--gutter) 3.5rem;
  background: var(--ink);
  color: #ffffff;
  position: relative;
  overflow: hidden;
}

.page-contact .contact-address::after {
  content: "";
  position: absolute;
  bottom: -30%;
  right: -10%;
  width: 50%;
  height: 60%;
  background: linear-gradient(135deg, transparent 0%, transparent 40%, rgba(10, 92, 255, 0.3) 40.5%);
  clip-path: polygon(15% 0, 100% 20%, 100% 100%, 0 100%);
  opacity: 0.35;
  pointer-events: none;
}

.page-contact .contact-address .container {
  max-width: var(--container);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.page-contact .contact-address__layout {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.page-contact .contact-address h2 {
  color: #ffffff;
}

.page-contact .contact-address .section-kicker {
  color: var(--orange);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.page-contact .address-envelope {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 1rem;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-family: var(--contact-mono);
  font-size: 1rem;
  line-height: 1.7;
  max-width: 480px;
  position: relative;
}

.page-contact .address-envelope::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  border-radius: 1rem 1rem 0 0;
  background: linear-gradient(90deg, var(--blue), var(--orange));
}

.page-contact .address-envelope__label {
  font-weight: 700;
  color: var(--orange);
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.page-contact .address-note {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.85rem;
  line-height: 1.6;
  max-width: 450px;
  margin-top: 1rem;
}

.page-contact .contact-address__side {
  display: none;
}

/* 反馈前准备 */
.page-contact .contact-prep {
  padding: 3rem var(--gutter) 3.5rem;
}

.page-contact .contact-prep .container {
  max-width: var(--container);
  margin: 0 auto;
}

.page-contact .contact-prep .section-kicker {
  color: var(--blue);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.page-contact .prep-intro {
  font-size: 1rem;
  color: rgba(22, 30, 46, 0.7);
  max-width: 560px;
  margin-bottom: 2rem;
}

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

.page-contact .prep-item {
  display: flex;
  gap: 1rem;
  background: #ffffff;
  border: 1px solid var(--line);
  border-left: 3px solid var(--blue);
  border-radius: 0.75rem;
  padding: 1.25rem;
  transition: box-shadow 0.2s ease;
}

.page-contact .prep-item:hover {
  box-shadow: 0 4px 16px rgba(22, 30, 46, 0.06);
}

.page-contact .prep-num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
  color: var(--blue);
  flex-shrink: 0;
}

.page-contact .prep-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 0.35rem;
}

.page-contact .prep-body p {
  font-size: 0.85rem;
  color: rgba(22, 30, 46, 0.65);
  line-height: 1.6;
  margin: 0;
}

/* 响应承诺 */
.page-contact .contact-response {
  position: relative;
  padding: 3.5rem var(--gutter) 4rem;
  background: var(--night);
  color: #ffffff;
  overflow: hidden;
}

.page-contact .contact-response::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -5%;
  width: 45%;
  height: 90%;
  background: linear-gradient(155deg, transparent 0%, transparent 45%, rgba(10, 92, 255, 0.35) 45.5%, rgba(10, 92, 255, 0.35) 100%);
  clip-path: polygon(0 0, 100% 20%, 100% 100%, 0 80%);
  pointer-events: none;
}

.page-contact .contact-response .container {
  max-width: var(--container);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

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

.page-contact .contact-response .section-kicker {
  color: var(--orange);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.page-contact .contact-response h2 {
  color: #ffffff;
}

.page-contact .response-stat {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin: 1.5rem 0 1rem;
}

.page-contact .response-num {
  font-family: var(--font-display);
  font-size: clamp(4rem, 10vw, 6.5rem);
  font-weight: 800;
  line-height: 0.9;
  color: var(--orange);
}

.page-contact .response-unit {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: #ffffff;
}

.page-contact .response-desc {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.95rem;
  line-height: 1.7;
  max-width: 420px;
}

.page-contact .contact-media--response {
  border-radius: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

/* 表单示意 */
.page-contact .contact-demo {
  padding: 3rem var(--gutter) 4.5rem;
  background: var(--paper);
}

.page-contact .contact-demo .container {
  max-width: var(--container);
  margin: 0 auto;
}

.page-contact .demo-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

.page-contact .contact-demo .section-kicker {
  color: var(--blue);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.page-contact .demo-text p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: rgba(22, 30, 46, 0.75);
  margin-bottom: 0.75rem;
}

.page-contact .demo-text a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 0.15em;
  font-weight: 600;
}

.page-contact .demo-text .button {
  margin-top: 1.25rem;
}

.page-contact .demo-form {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(22, 30, 46, 0.06);
}

.page-contact .demo-form__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  background: var(--ink);
  color: #ffffff;
}

.page-contact .demo-form__title {
  font-weight: 700;
  font-size: 0.9rem;
}

.page-contact .demo-form__badge {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  background: rgba(255, 255, 255, 0.15);
  color: var(--orange);
  padding: 0.25rem 0.6rem;
  border-radius: 2rem;
  text-transform: uppercase;
}

.page-contact .demo-form__body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.page-contact .demo-form__field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.page-contact .demo-form__field label {
  font-size: 0.8rem;
  font-weight: 600;
  color: rgba(22, 30, 46, 0.7);
}

.page-contact .demo-form__input,
.page-contact .demo-form__textarea {
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--contact-mono);
  cursor: not-allowed;
  opacity: 0.75;
}

.page-contact .demo-form__textarea {
  min-height: 4.5rem;
  line-height: 1.5;
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    padding: 4rem var(--gutter) 5rem;
  }

  .page-contact .contact-hero__container {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .page-contact .contact-hero__stamp {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-right: 1rem;
  }

  .page-contact .contact-channels {
    padding: 5rem var(--gutter) 6rem;
  }

  .page-contact .channels-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 4rem;
    align-items: center;
  }

  .page-contact .channel-card__value--email {
    font-size: 1.5rem;
  }

  .page-contact .contact-address {
    padding: 5rem var(--gutter) 6rem;
  }

  .page-contact .contact-address__layout {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
  }

  .page-contact .contact-address__side {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 1rem;
    padding-bottom: 0.5rem;
  }

  .page-contact .contact-address__side .side-note {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.8rem;
    max-width: 180px;
    text-align: right;
    line-height: 1.5;
    margin: 0;
  }

  .page-contact .contact-address__side .side-icon {
    font-size: 2.5rem;
    color: rgba(255, 255, 255, 0.3);
    line-height: 1;
  }

  .page-contact .contact-prep {
    padding: 5rem var(--gutter) 6rem;
  }

  .page-contact .prep-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }

  .page-contact .contact-response {
    padding: 5rem var(--gutter) 6rem;
  }

  .page-contact .response-grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 4rem;
    align-items: center;
  }

  .page-contact .contact-demo {
    padding: 5rem var(--gutter) 6rem;
  }

  .page-contact .demo-grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 4rem;
    align-items: start;
  }
}