.page-contact {
  --pc-gap: clamp(18px, 3vw, 32px);
  --pc-section-pad: clamp(52px, 8vw, 104px);
  position: relative;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
}

/* ---------- 框景首屏 ---------- */
.contact-hero {
  position: relative;
  padding: clamp(24px, 5vw, 56px) 0 clamp(40px, 7vw, 84px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.contact-hero::before {
  content: "";
  position: absolute;
  top: -26vw;
  right: -14vw;
  width: 62vw;
  height: 62vw;
  max-width: 760px;
  max-height: 760px;
  background: radial-gradient(circle, rgba(138, 107, 255, 0.22), transparent 68%);
  pointer-events: none;
}

.contact-hero::after {
  content: "";
  position: absolute;
  bottom: -30vw;
  left: -18vw;
  width: 56vw;
  height: 56vw;
  max-width: 640px;
  max-height: 640px;
  background: radial-gradient(circle, rgba(63, 224, 208, 0.16), transparent 70%);
  pointer-events: none;
}

.contact-hero__net {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.5;
  pointer-events: none;
}

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

.contact-hero__crumb {
  margin-bottom: clamp(18px, 3vw, 30px);
}

.contact-hero__frame {
  position: relative;
  padding: clamp(24px, 4vw, 60px) clamp(20px, 4vw, 56px) clamp(28px, 4vw, 56px);
  border: 1px solid var(--line);
  background: linear-gradient(158deg, rgba(14, 22, 38, 0.9), rgba(6, 10, 20, 0.72) 68%);
  border-radius: var(--radius);
}

.contact-hero__frame::before,
.contact-hero__frame::after {
  content: "";
  position: absolute;
  width: 15px;
  height: 15px;
  border: 1px solid var(--cyan);
}

.contact-hero__frame::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}

.contact-hero__frame::after {
  right: -1px;
  bottom: -1px;
  border-top: 0;
  border-left: 0;
}

.contact-hero__meta {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: clamp(18px, 3vw, 34px);
}

.contact-hero__mark {
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--cyan);
  white-space: nowrap;
}

.contact-hero__rule {
  flex: 1 1 auto;
  height: 1px;
  background: var(--line);
}

.contact-hero__tag {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
  white-space: nowrap;
}

.contact-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(31px, 6.6vw, 78px);
  line-height: 1.06;
  letter-spacing: 0.04em;
  color: var(--white);
  max-width: 16ch;
  transform: scaleX(0.945);
  transform-origin: left center;
}

.contact-hero__lead {
  margin: 18px 0 0;
  max-width: 44ch;
  color: var(--muted);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.9;
}

.contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 34px);
}

/* ---------- 01 咨询前准备 ---------- */
.contact-prep {
  padding: var(--pc-section-pad) 0;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(15, 59, 58, 0.22), transparent 62%);
}

.contact-prep__grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
}

.contact-prep__intro {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
  max-width: 34ch;
}

.contact-prep__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.prep-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: clamp(18px, 2.6vw, 26px) 12px;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.3s ease, padding-left 0.3s ease;
}

.prep-item:hover {
  background: rgba(63, 224, 208, 0.05);
  padding-left: 20px;
}

.prep-item__no {
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--cyan);
  padding-top: 5px;
}

.prep-item__body {
  min-width: 0;
}

.prep-item__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 500;
  color: var(--white);
  letter-spacing: 0.01em;
}

.prep-item__text {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.9;
  max-width: 52ch;
}

/* ---------- 02 联系通道 ---------- */
.contact-channels {
  padding: var(--pc-section-pad) 0;
  background: linear-gradient(180deg, var(--bg), #080D1A 50%, var(--bg));
}

.contact-channels__head {
  margin-bottom: clamp(24px, 3.6vw, 40px);
}

.contact-channels__figure {
  margin: 0 0 clamp(26px, 4vw, 44px);
}

.contact-channels__figure img,
.contact-location__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.contact-cards {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.contact-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(20px, 3vw, 32px);
  background: var(--panel);
  transition: transform 0.28s ease, background-color 0.28s ease;
}

.contact-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--card-accent, var(--cyan));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.38s ease;
}

.contact-card:hover::before,
.contact-card:focus-within::before {
  transform: scaleX(1);
}

.contact-card:hover {
  background: #111A2C;
}

.contact-card__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--card-accent, var(--cyan));
}

.contact-card__title {
  margin: 0;
  font-size: 19px;
  font-weight: 500;
  color: var(--white);
  letter-spacing: 0.01em;
}

.contact-card__value {
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid var(--card-accent, var(--cyan));
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.7;
  color: var(--white);
  word-break: break-word;
}

.contact-card__link {
  color: var(--white);
  text-decoration: none;
  border-bottom: 1px solid var(--card-accent, var(--cyan));
  transition: color 0.24s ease;
}

.contact-card__link:hover,
.contact-card__link:focus-visible {
  color: var(--card-accent, var(--cyan));
}

.contact-card__note {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
}

.contact-card__scale {
  margin-top: 2px;
}

.contact-card__scale-track {
  display: block;
  position: relative;
  height: 3px;
  background: var(--line);
  overflow: hidden;
}

.contact-card__scale-fill {
  display: block;
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, rgba(138, 107, 255, 0.2), var(--purple) 45%, var(--cyan));
}

.contact-card__scale-marks {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.contact-card__hint {
  margin: auto 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.75;
  color: var(--muted);
  opacity: 0.66;
  transition: opacity 0.28s ease, color 0.28s ease;
}

.contact-card:hover .contact-card__hint,
.contact-card:focus-within .contact-card__hint {
  opacity: 1;
  color: var(--card-accent, var(--cyan));
}

.contact-card--cyan { --card-accent: var(--cyan); }
.contact-card--purple { --card-accent: var(--purple); }
.contact-card--orange { --card-accent: var(--orange); }

/* ---------- 03 通信地址与备案 ---------- */
.contact-location {
  padding: var(--pc-section-pad) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

.contact-location__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.contact-location__figure {
  margin: 0;
  align-self: start;
}

.contact-location__intro {
  margin: 14px 0 26px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
  max-width: 46ch;
}

.contact-location__list {
  margin: 0;
  border-top: 1px solid var(--line);
}

.contact-location__list .data-row {
  display: grid;
  gap: 8px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.contact-location__list .data-row__key {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--muted);
  text-transform: uppercase;
}

.contact-location__list .data-row__value {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 2;
  color: var(--white);
  word-break: break-word;
}

/* ---------- 04 协助范围 ---------- */
.contact-scope {
  padding: var(--pc-section-pad) 0;
}

.scope-list {
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.scope-item {
  position: relative;
  padding: clamp(20px, 3vw, 32px);
  background: var(--bg);
  transition: background-color 0.28s ease;
}

.scope-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 2px;
  background: var(--cyan);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 0.36s ease;
}

.scope-item:hover {
  background: rgba(63, 224, 208, 0.05);
}

.scope-item:hover::before {
  transform: scaleY(1);
}

.scope-item__no {
  display: block;
  margin-bottom: 10px;
  font-size: 11.5px;
  letter-spacing: 0.22em;
  color: var(--cyan);
}

.scope-item__title {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 500;
  color: var(--white);
  letter-spacing: 0.01em;
}

.scope-item__text {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.9;
}

.contact-selfhelp {
  margin-top: clamp(30px, 4.6vw, 52px);
  padding: clamp(22px, 3.4vw, 38px);
  border: 1px solid var(--line);
  border-left: 3px solid var(--purple);
  background: linear-gradient(120deg, rgba(138, 107, 255, 0.1), transparent 62%);
}

.contact-selfhelp__title {
  margin: 0 0 12px;
  font-size: 18px;
  font-weight: 500;
  color: var(--white);
}

.contact-selfhelp__text {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.9;
  max-width: 56ch;
}

.contact-selfhelp__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
}

.contact-selfhelp__link {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text);
  text-decoration: none;
  transition: border-color 0.24s ease, color 0.24s ease, background-color 0.24s ease;
}

.contact-selfhelp__link:hover,
.contact-selfhelp__link:focus-visible {
  border-color: var(--purple);
  color: var(--white);
  background: rgba(138, 107, 255, 0.14);
}

/* ---------- 收尾 ---------- */
.contact-closing {
  padding: 0 0 clamp(56px, 9vw, 116px);
}

.contact-closing__strip {
  display: grid;
  gap: 20px;
  padding: clamp(22px, 3.4vw, 38px);
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  border-radius: var(--radius);
  background: linear-gradient(120deg, rgba(255, 154, 77, 0.12), var(--panel) 58%);
}

.contact-closing__title {
  margin: 0 0 10px;
  font-size: clamp(19px, 2.4vw, 26px);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--white);
}

.contact-closing__text {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.9;
  max-width: 52ch;
}

.contact-closing__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .contact-prep__grid {
    grid-template-columns: minmax(0, 38fr) minmax(0, 62fr);
    align-items: start;
  }

  .scope-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contact-closing__strip {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .contact-closing__actions {
    justify-content: flex-end;
  }
}

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

  .contact-location__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }

  .contact-location__list .data-row {
    grid-template-columns: 118px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }
}

@media (min-width: 1100px) {
  .contact-hero__frame {
    padding-right: clamp(56px, 6vw, 96px);
  }

  .contact-prep__list {
    padding-left: 8px;
  }
}