.page-contact {
  display: block;
  background: var(--ink);
  color: var(--bone);
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb-row {
  padding-top: clamp(1.1rem, 3vw, 1.9rem);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  margin-top: clamp(.7rem, 2vw, 1.5rem);
  padding: clamp(2.6rem, 8vw, 6.6rem) 0 clamp(2.4rem, 6.5vw, 5rem);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-contact .hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
  opacity: .5;
}

.page-contact .hero-shade {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(258deg, rgba(110, 10, 28, .88) 0%, rgba(10, 12, 16, .72) 38%, rgba(10, 12, 16, .95) 100%),
    radial-gradient(120% 90% at 8% 100%, rgba(38, 227, 200, .14) 0%, rgba(38, 227, 200, 0) 62%);
}

.page-contact .hero-inner {
  display: grid;
  gap: 1.1rem;
  max-width: min(100%, 58rem);
}

.page-contact .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .display-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.4rem, 7vw, 4.3rem);
  line-height: 1.03;
  letter-spacing: -0.02em;
  color: var(--bone);
}

.page-contact .hero-lead {
  margin: 0;
  max-width: 43rem;
  font-size: clamp(.98rem, 1.6vw, 1.1rem);
  line-height: 1.9;
  color: rgba(243, 239, 233, .84);
}

.page-contact .hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem 1.5rem;
  margin-top: .5rem;
  padding-top: 1.1rem;
  border-top: 1px solid rgba(243, 239, 233, .16);
  font-size: .88rem;
  color: var(--slate);
}

.page-contact .hero-meta b.mono {
  font-family: var(--font-mono);
  font-size: 1.18rem;
  line-height: 1;
  color: var(--cyan);
  margin-right: .3rem;
}

/* ---------- 通用区块头 ---------- */
.page-contact .channel-section,
.page-contact .outcome-section {
  padding: clamp(2.3rem, 6.5vw, 4.4rem) 0;
}

.page-contact .section-head {
  max-width: 46rem;
  margin-bottom: clamp(1.3rem, 3.4vw, 2.2rem);
}

.page-contact .section-title {
  margin: .55rem 0 .75rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.55rem, 3.4vw, 2.4rem);
  line-height: 1.16;
  color: var(--bone);
}

.page-contact .section-lead {
  margin: 0;
  font-size: clamp(.94rem, 1.4vw, 1.02rem);
  line-height: 1.85;
  color: var(--slate);
}

/* ---------- 渠道卡 ---------- */
.page-contact .channel-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1fr);
}

.page-contact .channel-card {
  position: relative;
  overflow: hidden;
  padding: clamp(1.35rem, 3vw, 2rem);
  border-radius: var(--radius-lg);
  background: var(--panel);
  border: 1px solid var(--line);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
}

.page-contact .channel-card--in::before {
  background: linear-gradient(180deg, var(--cyan), rgba(38, 227, 200, 0));
}

.page-contact .channel-card--mail::before {
  background: linear-gradient(180deg, var(--crimson-bright), rgba(228, 56, 79, 0));
}

.page-contact .channel-card h3 {
  margin: 0 0 .7rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.12rem, 2vw, 1.36rem);
  color: var(--bone);
}

.page-contact .channel-card > p {
  margin: 0 0 1rem;
  font-size: .93rem;
  line-height: 1.8;
  color: var(--slate);
}

.page-contact .channel-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .55rem;
}

.page-contact .channel-card li {
  position: relative;
  padding-left: 1.15rem;
  font-size: .92rem;
  line-height: 1.72;
  color: rgba(243, 239, 233, .82);
}

.page-contact .channel-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 9px;
  height: 1px;
  background: var(--slate);
}

.page-contact .channel-card--in li::before {
  background: var(--cyan);
}

/* ---------- 主体双栏 ---------- */
.page-contact .contact-body {
  padding: 0 0 clamp(2.2rem, 6vw, 4.2rem);
}

.page-contact .contact-grid {
  display: grid;
  gap: clamp(1.3rem, 3.5vw, 2rem);
  grid-template-columns: minmax(0, 1fr);
}

.page-contact .contact-grid > * {
  min-width: 0;
}

/* 左侧联系面板 */
.page-contact .contact-rail {
  position: relative;
  overflow: hidden;
  padding: clamp(1.4rem, 3.4vw, 2.2rem);
  border-radius: var(--radius-lg);
  background: linear-gradient(162deg, var(--crimson) 0%, var(--crimson-deep) 46%, var(--ink) 100%);
  border: 1px solid rgba(228, 56, 79, .32);
  box-shadow: 0 30px 70px -48px rgba(176, 16, 44, .95);
}

.page-contact .rail-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .24em;
  color: rgba(243, 239, 233, .62);
}

.page-contact .rail-title {
  margin: .55rem 0 1.2rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.45rem, 3vw, 1.95rem);
  line-height: 1.18;
  color: var(--bone);
}

.page-contact .rail-list {
  margin: 0;
  display: grid;
}

.page-contact .rail-row {
  padding: .95rem 0;
  border-top: 1px solid rgba(243, 239, 233, .18);
}

.page-contact .rail-row:last-child {
  border-bottom: 1px solid rgba(243, 239, 233, .18);
}

.page-contact .rail-row dt {
  margin-bottom: .32rem;
  font-size: .76rem;
  letter-spacing: .12em;
  color: rgba(243, 239, 233, .66);
}

.page-contact .rail-row dd {
  margin: 0;
  font-size: clamp(.98rem, 1.7vw, 1.12rem);
  font-weight: 600;
  line-height: 1.65;
  overflow-wrap: anywhere;
}

.page-contact .rail-row dd .mono {
  font-family: var(--font-mono);
  letter-spacing: .01em;
}

.page-contact .rail-row--geo dd {
  padding-left: .9rem;
  border-left: 1px solid rgba(38, 227, 200, .55);
  font-size: .96rem;
  line-height: 1.75;
}

.page-contact .rail-note {
  margin-top: 1.5rem;
  padding: 1.05rem 1.15rem;
  border-radius: var(--radius-sm);
  background: rgba(10, 12, 16, .48);
  border: 1px solid rgba(243, 239, 233, .12);
}

.page-contact .rail-note h3 {
  margin: 0 0 .5rem;
  font-size: .92rem;
  font-weight: 700;
  letter-spacing: .05em;
  color: var(--cyan);
}

.page-contact .rail-note p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.82;
  color: rgba(243, 239, 233, .84);
}

/* 右栏 */
.page-contact .contact-main {
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.6rem);
  align-content: start;
}

.page-contact .support-shot {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--panel);
  border: 1px solid var(--line);
}

.page-contact .support-shot img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: clamp(150px, 24vw, 230px);
  object-fit: cover;
}

.page-contact .support-shot figcaption {
  padding: .85rem 1.2rem 1rem;
  font-size: .83rem;
  line-height: 1.6;
  color: var(--slate);
}

/* ---------- 问题入口 ---------- */
.page-contact .entry-block .section-head {
  margin-bottom: 1.2rem;
}

.page-contact .entry-list {
  display: grid;
  gap: .7rem;
}

.page-contact .entry {
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--panel);
  border: 1px solid var(--line);
  transition: border-color .24s var(--ease), box-shadow .24s var(--ease);
}

.page-contact .entry[open] {
  border-color: rgba(38, 227, 200, .45);
  box-shadow: inset 3px 0 0 0 var(--cyan);
}

.page-contact .entry-head {
  display: flex;
  align-items: center;
  gap: .9rem;
  padding: 1.05rem clamp(1rem, 2.4vw, 1.5rem);
  cursor: pointer;
  list-style: none;
}

.page-contact .entry-head::-webkit-details-marker {
  display: none;
}

.page-contact .entry-head:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-contact .entry-index {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: .92rem;
  color: var(--slate);
  transition: color .24s var(--ease);
}

.page-contact .entry[open] .entry-index {
  color: var(--cyan);
}

.page-contact .entry-title {
  flex: 1 1 auto;
  font-size: clamp(.96rem, 1.8vw, 1.08rem);
  font-weight: 700;
  line-height: 1.5;
  color: var(--bone);
}

.page-contact .entry-caret {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--slate);
  border-bottom: 2px solid var(--slate);
  transform: rotate(45deg);
  transition: transform .24s var(--ease), border-color .24s var(--ease);
}

.page-contact .entry[open] .entry-caret {
  transform: rotate(-135deg);
  border-color: var(--cyan);
}

.page-contact .entry-body {
  display: grid;
  gap: .7rem;
  padding: 0 clamp(1rem, 2.4vw, 1.5rem) 1.3rem;
}

.page-contact .entry-body > p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.85;
  color: rgba(243, 239, 233, .82);
}

.page-contact .entry-body > p.entry-hint {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-contact .entry-checklist {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .5rem;
}

.page-contact .entry-checklist li {
  position: relative;
  padding-left: 1.5rem;
  font-size: .9rem;
  line-height: 1.75;
  color: rgba(243, 239, 233, .78);
}

.page-contact .entry-checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 14px;
  height: 1px;
  background: var(--cyan);
}

/* ---------- 合作 ---------- */
.page-contact .coop {
  padding: clamp(1.4rem, 3.6vw, 2.2rem);
  border-radius: var(--radius-lg);
  background: linear-gradient(140deg, rgba(176, 16, 44, .26) 0%, rgba(20, 24, 33, .94) 58%);
  border: 1px solid rgba(176, 16, 44, .38);
}

.page-contact .coop .section-title {
  font-size: clamp(1.35rem, 2.8vw, 1.85rem);
  margin-bottom: .7rem;
}

.page-contact .coop-lead {
  margin: 0;
  font-size: .93rem;
  line-height: 1.85;
  color: rgba(243, 239, 233, .8);
}

.page-contact .coop-list {
  margin: 1.2rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .9rem;
}

.page-contact .coop-list li {
  padding-top: .85rem;
  border-top: 1px solid rgba(243, 239, 233, .16);
  font-size: .9rem;
  line-height: 1.8;
  color: rgba(243, 239, 233, .78);
}

.page-contact .coop-list b {
  display: block;
  margin-bottom: .3rem;
  font-size: .96rem;
  font-weight: 800;
  color: var(--bone);
}

.page-contact .coop-note {
  margin: 1.25rem 0 0;
  font-size: .88rem;
  line-height: 1.82;
  color: var(--slate);
}

.page-contact .coop-note a,
.page-contact .strip-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(38, 227, 200, .4);
}

.page-contact .coop-note a:hover,
.page-contact .strip-note a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 常见处理结果 ---------- */
.page-contact .outcome-section {
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(20, 24, 33, .6) 0%, rgba(10, 12, 16, 0) 100%);
}

.page-contact .outcome-strip {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1fr);
}

.page-contact .outcome-card {
  padding: 1.25rem 1.25rem 1.45rem;
  border-radius: var(--radius-md);
  background: var(--ink);
  border: 1px solid var(--line);
}

.page-contact .outcome-num {
  display: block;
  margin-bottom: .55rem;
  font-family: var(--font-mono);
  font-size: 1.55rem;
  line-height: 1;
  color: var(--cyan);
}

.page-contact .outcome-card h3 {
  margin: 0 0 .55rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.04rem;
  color: var(--bone);
}

.page-contact .outcome-card p {
  margin: 0;
  font-size: .89rem;
  line-height: 1.82;
  color: var(--slate);
}

/* ---------- 底部通栏 ---------- */
.page-contact .contact-strip {
  padding: clamp(1.5rem, 4vw, 2.3rem) 0;
  background: linear-gradient(90deg, var(--crimson-deep) 0%, var(--ink) 72%);
  border-top: 1px solid rgba(176, 16, 44, .45);
}

.page-contact .strip-inner {
  display: grid;
  gap: .55rem;
}

.page-contact .strip-inner p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.82;
  color: rgba(243, 239, 233, .86);
}

.page-contact .strip-inner p .mono {
  font-family: var(--font-mono);
  letter-spacing: .02em;
}

.page-contact .strip-inner p.strip-note {
  font-size: .86rem;
  color: var(--slate);
}

/* ---------- 焦点态 ---------- */
.page-contact a:focus-visible,
.page-contact summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.3rem;
  }
  .page-contact .coop-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.1rem;
  }
}

@media (min-width: 780px) {
  .page-contact .outcome-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.2rem;
  }
}

@media (min-width: 860px) {
  .page-contact .strip-inner {
    grid-template-columns: 1.05fr .95fr;
    gap: 2rem;
    align-items: center;
  }
}

@media (min-width: 980px) {
  .page-contact .contact-grid {
    grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
    gap: 2.2rem;
    align-items: start;
  }
  .page-contact .contact-rail {
    position: sticky;
    top: 7rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .entry,
  .page-contact .entry-caret,
  .page-contact .entry-index {
    transition-duration: .01ms;
  }
  .page-contact .reveal {
    transform: none;
  }
}
<<<END>>>