.page-contact {
  overflow-x: clip;
}

.page-contact .sec-title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.1vw, 2.2rem);
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--text-1);
  margin: 12px 0 0;
  max-width: 22ch;
}

/* ---------- 01 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(34px, 5vw, 60px) 0 clamp(42px, 6vw, 76px);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(58% 52% at 6% 0%, rgba(61, 242, 192, .10), transparent 72%),
    radial-gradient(46% 40% at 98% 4%, rgba(255, 177, 61, .065), transparent 70%);
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-contact .contact-hero__lead h1 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(2rem, 5.4vw, 3.4rem);
  line-height: 1.04;
  letter-spacing: -.01em;
  color: var(--text-1);
  margin: 14px 0 0;
}

.page-contact .hero-lede {
  margin: 18px 0 0;
  max-width: 48ch;
  color: var(--text-2);
  font-size: clamp(.94rem, 1.6vw, 1.02rem);
  line-height: 1.78;
}

.page-contact .chan-list {
  margin-top: clamp(26px, 3.6vw, 38px);
  border-top: 1px solid var(--line);
}

.page-contact .chan {
  position: relative;
  display: grid;
  gap: 7px;
  padding: 17px 0 19px;
  border-bottom: 1px solid var(--line-soft);
  transition: background .22s var(--ease);
}

.page-contact .chan::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 2px;
  height: 100%;
  background: var(--cyan);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .28s var(--ease);
}

.page-contact .chan:hover::before {
  transform: scaleY(1);
}

.page-contact .chan__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--text-3);
}

.page-contact .chan__val {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.12rem, 2.4vw, 1.55rem);
  line-height: 1.24;
  color: var(--text-1);
  overflow-wrap: anywhere;
}

.page-contact .chan__val--mail {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(.92rem, 2.1vw, 1.12rem);
  letter-spacing: -.01em;
  color: var(--cyan);
  word-break: break-all;
}

.page-contact .chan__val--num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
}

.page-contact .chan__note {
  margin: 0;
  color: var(--text-2);
  font-size: .855rem;
  line-height: 1.7;
}

.page-contact .contact-hero__media {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-contact .contact-hero__figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--bg-panel);
  box-shadow: 0 18px 42px -28px rgba(0, 0, 0, .9);
}

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

.page-contact .contact-hero__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(5, 7, 12, 0) 52%, rgba(5, 7, 12, .58));
}

.page-contact .resp-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: linear-gradient(180deg, var(--bg-float), var(--bg-panel));
  padding: 16px 18px 8px;
}

.page-contact .resp-card__head {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-contact .resp-card__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 4px 14px;
  padding: 0 0 10px;
  margin-bottom: 8px;
  border-bottom: 1px dashed var(--line-soft);
  color: var(--text-2);
  font-size: .83rem;
}

.page-contact .resp-card__row:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.page-contact .resp-card__row .num {
  color: var(--text-1);
  font-size: .83rem;
}

/* ---------- 02 邮箱横带 ---------- */
.page-contact .mail-band {
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--bg-panel);
  padding: clamp(36px, 5.6vw, 64px) 0;
}

.page-contact .mail-band::before {
  content: "";
  position: absolute;
  inset: -60% 42% auto -12%;
  height: 210%;
  pointer-events: none;
  background: radial-gradient(closest-side, rgba(61, 242, 192, .13), transparent 72%);
}

.page-contact .mail-band::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(to right, rgba(38, 51, 63, .35) 1px, transparent 1px);
  background-size: 64px 100%;
  opacity: .5;
}

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

.page-contact .mail-band__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 20px;
  margin-top: clamp(18px, 2.6vw, 26px);
}

.page-contact .mail-band__addr {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 3.1vw, 1.85rem);
  letter-spacing: -.01em;
  color: var(--cyan);
  word-break: break-all;
  line-height: 1.3;
}

.page-contact .mail-band__copy {
  flex: none;
}

.page-contact .copy-btn[data-copied="true"] {
  background: var(--cyan-dim);
  border-color: var(--cyan-dim);
  color: var(--text-1);
}

.page-contact .mail-band__note {
  margin: 16px 0 0;
  max-width: 62ch;
  color: var(--text-2);
  font-size: .88rem;
  line-height: 1.76;
}

/* ---------- 03 反馈清单 ---------- */
.page-contact .checklist {
  padding: clamp(46px, 6.6vw, 84px) 0;
}

.page-contact .checklist__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 46px);
  margin-top: clamp(24px, 3.2vw, 38px);
}

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

.page-contact .checklist__item {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 6px 16px 2px;
  border-bottom: 1px solid var(--line-soft);
  transition: background .2s var(--ease);
}

.page-contact .checklist__item:hover {
  background: rgba(20, 30, 43, .55);
}

.page-contact .checklist__box {
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: 4px;
  border: 1px solid var(--cyan-dim);
  border-radius: 4px;
  background: rgba(27, 143, 118, .14);
}

.page-contact .checklist__box::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 0;
  width: 5px;
  height: 9px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(42deg);
}

.page-contact .checklist__text {
  display: block;
  min-width: 0;
}

.page-contact .checklist__title {
  display: block;
  margin-bottom: 4px;
  color: var(--text-1);
  font-size: .97rem;
  font-weight: 500;
  letter-spacing: .01em;
}

.page-contact .checklist__hint {
  display: block;
  color: var(--text-2);
  font-size: .845rem;
  line-height: 1.72;
}

.page-contact .checklist__figure {
  margin: 0;
  align-self: start;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--bg-panel);
}

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

.page-contact .checklist__figure figcaption {
  padding: 12px 16px 14px;
  border-top: 1px solid var(--line-soft);
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  line-height: 1.6;
}

/* ---------- 04 问题分类 ---------- */
.page-contact .triage {
  position: relative;
  padding: clamp(44px, 6.4vw, 82px) 0;
  border-top: 1px solid var(--line-soft);
}

.page-contact .triage__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: clamp(24px, 3.2vw, 36px);
}

.page-contact .triage__item {
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--bg-panel);
  overflow: hidden;
  transition: border-color .22s var(--ease), background .22s var(--ease), border-radius .22s var(--ease);
}

.page-contact .triage__item:hover {
  border-color: rgba(61, 242, 192, .45);
}

.page-contact .triage__item[open] {
  border-color: var(--cyan-dim);
  border-radius: var(--radius-card);
  background: linear-gradient(180deg, var(--bg-float), var(--bg-panel));
}

.page-contact .triage__item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 20px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: .01em;
  color: var(--text-1);
}

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

.page-contact .triage__item summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -3px;
  border-radius: inherit;
}

.page-contact .triage__sign {
  position: relative;
  flex: none;
  width: 15px;
  height: 15px;
}

.page-contact .triage__sign::before,
.page-contact .triage__sign::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  border-radius: 2px;
  transition: transform .24s var(--ease), opacity .24s var(--ease);
}

.page-contact .triage__sign::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 2px;
}

.page-contact .triage__sign::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
}

.page-contact .triage__item[open] .triage__sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-contact .triage__body {
  padding: 0 20px 18px;
  color: var(--text-2);
  font-size: .875rem;
  line-height: 1.76;
}

.page-contact .triage__body p {
  margin: 0 0 10px;
}

.page-contact .triage__body p:last-child {
  margin-bottom: 0;
}

.page-contact .triage__tag {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 8px;
  border: 1px solid rgba(255, 177, 61, .5);
  border-radius: var(--radius-pill);
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .12em;
  vertical-align: 1px;
}

/* ---------- 05 服务范围 ---------- */
.page-contact .scope {
  padding: clamp(46px, 6.4vw, 84px) 0 clamp(54px, 7.6vw, 96px);
  border-top: 1px solid var(--line-soft);
}

.page-contact .scope__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
  margin-top: clamp(20px, 2.8vw, 30px);
}

.page-contact .scope__main p {
  margin: 16px 0 0;
  max-width: 60ch;
  color: var(--text-2);
  font-size: .94rem;
  line-height: 1.8;
}

.page-contact .scope__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(22px, 3vw, 30px);
}

.page-contact .scope__aside {
  position: relative;
  display: grid;
  gap: 16px;
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--bg-panel);
  align-content: start;
}

.page-contact .scope__aside::before {
  content: "";
  position: absolute;
  left: 20px;
  top: -1px;
  width: 48px;
  height: 2px;
  background: var(--cyan);
}

.page-contact .scope__stat {
  display: grid;
  gap: 5px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line-soft);
}

.page-contact .scope__stat:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.page-contact .scope__stat-k {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--text-3);
}

.page-contact .scope__stat-v {
  margin: 0;
  color: var(--text-1);
  font-size: .93rem;
  line-height: 1.45;
}

.page-contact .scope__stat-v.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
  letter-spacing: .01em;
  word-break: break-word;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .triage__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 18px;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }

  .page-contact .contact-hero__lead {
    padding-top: 6px;
  }

  .page-contact .checklist__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-contact .scope__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(32px, 6vw, 76px);
    align-items: start;
  }
}

@media (max-width: 479px) {
  .page-contact .chan__val {
    font-size: 1.08rem;
  }

  .page-contact .mail-band__addr {
    font-size: .95rem;
  }

  .page-contact .mail-band__copy {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .chan::before,
  .page-contact .chan,
  .page-contact .checklist__item,
  .page-contact .triage__item,
  .page-contact .triage__sign::before,
  .page-contact .triage__sign::after {
    transition: none;
  }
}
<<<END>>>