.page-contact {
  --contact-rule: 1px solid var(--line);
  --contact-pad-y: clamp(40px, 6vw, 76px);
  position: relative;
  display: block;
}

.page-contact::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(16, 55, 74, 0.45) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(16, 55, 74, 0.45) 1px, transparent 1px);
  background-size: 88px 88px;
  opacity: 0.3;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-intro {
  position: relative;
  padding: clamp(28px, 5vw, 60px) 0 clamp(26px, 4vw, 46px);
  border-bottom: var(--contact-rule);
}

.page-contact .contact-intro::after {
  content: "";
  position: absolute;
  inset: -60px -12% auto -12%;
  height: 360px;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(52% 72% at 18% 0%, rgba(30, 86, 107, 0.62), transparent 72%),
    radial-gradient(38% 62% at 88% 8%, rgba(182, 255, 60, 0.09), transparent 74%);
}

.page-contact h1 {
  margin: 14px 0 0;
  max-width: 42rem;
  font-weight: 200;
  font-size: clamp(29px, 6vw, 56px);
  line-height: 1.16;
  letter-spacing: 0.045em;
  color: var(--paper);
}

.page-contact .contact-intro .lede {
  max-width: 44rem;
  margin-top: 20px;
  color: var(--mist);
}

.page-contact .contact-facts {
  display: grid;
  grid-template-columns: 1fr;
  margin: clamp(26px, 4vw, 44px) 0 0;
  border-top: var(--contact-rule);
}

.page-contact .contact-fact {
  padding: 16px 0;
  border-bottom: var(--contact-rule);
}

.page-contact .contact-fact__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.page-contact .contact-fact__value {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(19px, 2.6vw, 26px);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  color: var(--amber);
}

.page-contact .contact-fact__note {
  margin: 4px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 章节 ---------- */
.page-contact .section {
  padding: var(--contact-pad-y) 0;
  border-bottom: var(--contact-rule);
}

.page-contact .section:last-of-type {
  border-bottom: 0;
}

.page-contact h2 {
  font-weight: 600;
  font-size: clamp(23px, 3.1vw, 33px);
  line-height: 1.25;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-contact h3 {
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--paper);
}

/* ---------- 支持范围 ---------- */
.page-contact .scope-grid {
  display: grid;
  grid-template-columns: 1fr;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-contact .scope {
  padding: 20px 0 4px;
  border-top: var(--contact-rule);
}

.page-contact .scope__title {
  margin: 0 0 8px;
  font-size: 18px;
}

.page-contact .scope__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .scope__list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .scope__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--paper);
}

.page-contact .scope__list li + li {
  margin-top: 4px;
}

.page-contact .scope__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 7px;
  height: 1px;
  background: var(--lime);
}

.page-contact .note--alert {
  margin-top: clamp(24px, 3.5vw, 36px);
}

/* ---------- 联系渠道 ---------- */
.page-contact .channels {
  display: grid;
  grid-template-columns: 1fr;
  margin-top: clamp(24px, 4vw, 40px);
  border-top: var(--contact-rule);
}

.page-contact .channel {
  position: relative;
  padding: 24px 0 26px 22px;
  border-bottom: var(--contact-rule);
  background: linear-gradient(90deg, rgba(233, 245, 242, 0.05), transparent 72%);
}

.page-contact .channel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--teal-600);
}

.page-contact .channel--mail::before {
  background: var(--lime);
}

.page-contact .channel--phone::before {
  background: var(--amber);
}

.page-contact .channel__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.page-contact .channel__value {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(17px, 2.3vw, 24px);
  line-height: 1.4;
  letter-spacing: 0.01em;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .channel--mail .channel__value {
  color: var(--lime);
}

.page-contact .channel__value--addr {
  font-size: clamp(15px, 1.7vw, 18px);
  line-height: 1.7;
  color: var(--paper);
}

.page-contact .channel__note {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .channel .copy-btn {
  margin-top: 16px;
}

.page-contact .channels__foot {
  margin-top: 20px;
  line-height: 1.85;
}

/* ---------- 准备清单 ---------- */
.page-contact .checklist {
  margin: clamp(22px, 3.5vw, 34px) 0 0;
  padding: 0;
  list-style: none;
  border-top: var(--contact-rule);
}

.page-contact .checklist__item {
  position: relative;
  border-bottom: var(--contact-rule);
}

.page-contact .checklist__box {
  position: absolute;
  left: 0;
  top: 50%;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.page-contact .checklist__label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 6px 15px 8px;
  cursor: pointer;
  border-radius: var(--radius-s);
  transition: background 0.28s var(--ease);
}

.page-contact .checklist__label::before {
  content: "";
  flex: 0 0 auto;
  width: 15px;
  height: 15px;
  margin-top: 4px;
  border: 1px solid var(--teal-600);
  border-radius: 4px;
  transition: background 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-contact .checklist__num {
  flex: 0 0 auto;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-contact .checklist__text {
  flex: 1 1 auto;
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper);
}

.page-contact .checklist__flag {
  flex: 0 0 auto;
  align-self: center;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--lime);
  color: var(--ink-900);
  font-size: 11px;
  letter-spacing: 0.14em;
  opacity: 0;
  transform: translateX(8px);
  transition: opacity 0.24s var(--ease), transform 0.24s var(--ease);
}

.page-contact .checklist__box:checked + .checklist__label {
  background: var(--glass);
}

.page-contact .checklist__box:checked + .checklist__label::before {
  background: var(--lime);
  border-color: var(--lime);
  box-shadow: inset 0 0 0 3px var(--ink-900);
}

.page-contact .checklist__box:checked + .checklist__label .checklist__flag {
  opacity: 1;
  transform: none;
}

.page-contact .checklist__box:focus-visible + .checklist__label {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

.page-contact .checklist__hint {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 处理流程 ---------- */
.page-contact .process-line {
  display: block;
  width: 100%;
  height: auto;
  margin: clamp(24px, 4vw, 38px) 0 0;
}

.page-contact .process-line__track {
  stroke: var(--line);
  stroke-width: 2;
}

.page-contact .process-line__node {
  fill: var(--ink-900);
  stroke: var(--lime);
  stroke-width: 2;
}

.page-contact .process-line__node--last {
  fill: var(--lime);
}

.page-contact .step-list {
  display: grid;
  grid-template-columns: 1fr;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .step {
  padding: 18px 0 20px;
  border-top: var(--contact-rule);
}

.page-contact .step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-contact .step__title {
  margin: 8px 0 8px;
  font-size: 17px;
}

.page-contact .step__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 纠错与合作 ---------- */
.page-contact .basis-list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: basis;
}

.page-contact .basis-list li {
  position: relative;
  padding-left: 38px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--paper);
  counter-increment: basis;
}

.page-contact .basis-list li + li {
  margin-top: 10px;
}

.page-contact .basis-list li::before {
  content: counter(basis, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.15em;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-contact .note--amber {
  margin-top: clamp(26px, 4vw, 40px);
}

/* ---------- 收尾 ---------- */
.page-contact .selfcheck {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .selfcheck a {
  display: inline-block;
  padding: 9px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13px;
  color: var(--paper);
  text-decoration: none;
  transition: border-color 0.24s var(--ease), color 0.24s var(--ease), background 0.24s var(--ease);
}

.page-contact .selfcheck a:hover {
  border-color: var(--lime);
  color: var(--lime);
  background: var(--glass);
}

.page-contact .selfcheck a:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

/* ---------- 图像 ---------- */
.page-contact .media--wide {
  margin: clamp(28px, 4vw, 46px) 0 0;
}

.page-contact .media--closing {
  margin: clamp(30px, 5vw, 56px) 0 0;
}

.page-contact .media__frame {
  overflow: hidden;
  border-radius: var(--radius-m);
  background: var(--ink-800);
}

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

.page-contact .media__caption {
  margin-top: 12px;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .contact-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .contact-fact {
    padding: 22px 24px 6px;
    border-bottom: 0;
    border-left: var(--contact-rule);
  }

  .page-contact .contact-fact:first-child {
    padding-left: 0;
    border-left: 0;
  }

  .page-contact .checklist__label {
    padding: 16px 14px;
  }
}

@media (min-width: 900px) {
  .page-contact .scope-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .scope {
    padding: 6px 0 6px 30px;
    border-top: 0;
    border-left: var(--contact-rule);
  }

  .page-contact .scope:first-child {
    padding-left: 0;
    border-left: 0;
  }

  .page-contact .channels {
    grid-template-columns: 1.35fr 1fr 1fr;
  }

  .page-contact .channel {
    border-bottom: 0;
    border-right: var(--contact-rule);
    padding: 26px 26px 26px 24px;
  }

  .page-contact .channel:last-child {
    border-right: 0;
    padding-right: 0;
  }
}

@media (min-width: 960px) {
  .page-contact .step-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .step {
    padding: 6px 24px 6px 24px;
    border-top: 0;
    border-left: var(--contact-rule);
  }

  .page-contact .step:first-child {
    padding-left: 0;
    border-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .checklist__label,
  .page-contact .checklist__label::before,
  .page-contact .checklist__flag,
  .page-contact .selfcheck a {
    transition: none;
  }

  .page-contact .checklist__flag {
    transform: none;
  }
}