.page-contact {
  --ct-line: rgba(16, 20, 23, 0.16);
  --ct-line-dark: rgba(220, 231, 232, 0.2);
  --ct-glass: rgba(4, 16, 25, 0.55);
  --ct-ink-soft: rgba(16, 20, 23, 0.78);
  --ct-light-soft: rgba(243, 235, 221, 0.8);
  background-color: var(--sand-100);
  color: var(--ink-950);
  font-family: var(--font-body);
  line-height: 1.85;
  overflow-x: clip;
}

.page-contact h1,
.page-contact h2,
.page-contact h3 {
  font-family: var(--font-display);
  margin: 0;
  letter-spacing: -0.02em;
  line-height: 1.08;
}

.page-contact h2 {
  font-size: clamp(25px, 4.2vw, 44px);
  font-weight: 300;
}

.page-contact p {
  margin: 12px 0 0;
}

.page-contact a {
  color: var(--tide-600);
}

.page-contact .section-no {
  font-family: var(--font-mono);
  font-size: clamp(26px, 4vw, 42px);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--coral-500);
}

.page-contact .ct-sec-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 2.4vw, 26px);
  align-items: start;
}

.page-contact .ct-sec-head p {
  max-width: 62ch;
  font-size: 15.5px;
  color: var(--ct-ink-soft);
}

/* ---------- 首屏框景 ---------- */
.page-contact .ct-hero {
  position: relative;
  background-color: var(--abyss-950);
  background-image: repeating-linear-gradient(
    90deg,
    var(--hair-soft) 0 1px,
    transparent 1px 88px
  );
  color: var(--white-050);
  padding: clamp(20px, 4vw, 40px) 0 clamp(52px, 8vw, 104px);
}

.page-contact .ct-hero .crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(243, 235, 221, 0.66);
}

.page-contact .ct-hero .crumbs a {
  color: inherit;
  text-decoration: none;
}

.page-contact .ct-hero .crumbs a:hover,
.page-contact .ct-hero .crumbs a:focus-visible {
  color: var(--cyan-400);
}

.page-contact .ct-hero .crumbs [aria-current="page"] {
  color: var(--coral-500);
}

.page-contact .ct-hero__frame {
  position: relative;
  margin-top: clamp(18px, 3vw, 34px);
  border: 1px solid var(--ct-line-dark);
  background: linear-gradient(170deg, rgba(10, 34, 57, 0.94), rgba(4, 16, 25, 0.9));
  padding: clamp(14px, 2.4vw, 28px);
}

.page-contact .ct-hero__frame::before {
  content: "";
  position: absolute;
  top: -1px;
  left: clamp(14px, 2.4vw, 28px);
  width: 76px;
  height: 3px;
  background: var(--cyan-400);
}

.page-contact .ct-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--ct-line-dark);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(220, 231, 232, 0.7);
}

.page-contact .ct-hero__coord {
  margin-left: auto;
  color: var(--cyan-400);
}

.page-contact .ct-hero__body {
  display: grid;
  gap: clamp(18px, 3vw, 32px);
  padding-top: clamp(18px, 3vw, 30px);
}

.page-contact .ct-hero__fig {
  margin: 0;
  border: 1px solid var(--ct-line-dark);
  background: var(--abyss-950);
}

.page-contact .ct-hero__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 9 / 7;
  object-fit: cover;
}

.page-contact .ct-hero__fig figcaption {
  padding: 8px 12px;
  border-top: 1px solid var(--ct-line-dark);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(220, 231, 232, 0.62);
}

.page-contact .ct-hero__text .eyebrow {
  color: var(--cyan-400);
}

.page-contact .ct-hero__title {
  margin-top: 8px;
  font-size: clamp(36px, 7vw, 72px);
  font-weight: 200;
  color: var(--white-050);
}

.page-contact .ct-hero__lead {
  max-width: 46ch;
  margin-top: 18px;
  font-size: clamp(15px, 1.7vw, 17px);
  color: var(--ct-light-soft);
}

.page-contact .ct-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .ct-hero__tags li {
  padding: 5px 11px;
  border: 1px solid var(--ct-line-dark);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--fog-200);
}

.page-contact .ct-hero__tags li.is-key {
  border-color: var(--coral-500);
  color: var(--coral-500);
}

/* ---------- 两步路径 ---------- */
.page-contact .ct-path {
  padding: clamp(48px, 8vw, 108px) 0;
}

.page-contact .ct-steps {
  display: grid;
  gap: clamp(16px, 2.4vw, 24px);
  margin: clamp(28px, 5vw, 52px) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .ct-step {
  padding: clamp(20px, 3vw, 30px);
  background: var(--white-050);
  border: 2px solid var(--ink-950);
  box-shadow: var(--shadow-brut);
}

.page-contact .ct-step__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--coral-500);
}

.page-contact .ct-step h3 {
  margin-top: 10px;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.6vw, 25px);
  font-weight: 600;
}

.page-contact .ct-step p {
  font-size: 15px;
  color: var(--ct-ink-soft);
}

.page-contact .ct-step__note {
  display: block;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px dashed var(--ct-line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--tide-600);
}

/* ---------- 公开渠道 ---------- */
.page-contact .ct-channels {
  padding: clamp(48px, 8vw, 104px) 0;
  background-color: var(--abyss-800);
  background-image: repeating-linear-gradient(
    0deg,
    var(--hair-soft) 0 1px,
    transparent 1px 72px
  );
  color: var(--white-050);
}

.page-contact .ct-channels .ct-sec-head p {
  color: var(--ct-light-soft);
}

.page-contact .ct-channels__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-contact .ct-channels__fig {
  margin: clamp(24px, 4vw, 36px) 0 0;
}

.page-contact .ct-channels__fig img {
  display: block;
  width: 100%;
  height: auto;
}

.page-contact .ct-channels__list {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-contact .ct-channel {
  display: grid;
  gap: 8px;
  padding: clamp(16px, 2.4vw, 22px);
  border: 1px solid var(--ct-line-dark);
  background: var(--ct-glass);
}

.page-contact .ct-channel__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan-400);
}

.page-contact .ct-channel__val {
  font-family: var(--font-display);
  font-size: clamp(18px, 2.5vw, 25px);
  font-weight: 500;
  line-height: 1.3;
  word-break: break-word;
  color: var(--white-050);
}

.page-contact .ct-channel__note {
  margin: 0;
  font-size: 13.5px;
  color: rgba(220, 231, 232, 0.74);
}

.page-contact .ct-channel__copy {
  justify-self: start;
  margin-top: 4px;
  padding: 7px 14px;
  border: 1px solid var(--ct-line-dark);
  background: transparent;
  color: var(--fog-200);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-contact .ct-channel__copy:hover,
.page-contact .ct-channel__copy:focus-visible {
  border-color: var(--cyan-400);
  color: var(--cyan-400);
}

.page-contact .ct-channel__copy.is-copied {
  border-color: var(--coral-500);
  color: var(--coral-500);
}

/* ---------- 工单情形 ---------- */
.page-contact .ct-cases {
  padding: clamp(48px, 8vw, 104px) 0;
  background: var(--fog-200);
}

.page-contact .ct-case-list {
  display: grid;
  gap: 12px;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-contact .ct-case {
  border: 1px solid var(--ct-line);
  background: var(--white-050);
}

.page-contact .ct-case[open] {
  border-color: var(--ink-950);
  box-shadow: var(--shadow-brut);
}

.page-contact .ct-case__sum {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.4;
}

.page-contact .ct-case__sum::-webkit-details-marker {
  display: none;
}

.page-contact .ct-case__sum:focus-visible {
  outline: 2px solid var(--tide-600);
  outline-offset: -2px;
}

.page-contact .ct-case__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--coral-500);
}

.page-contact .ct-case__sign {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--tide-600);
  transition: transform 0.2s var(--ease);
}

.page-contact .ct-case[open] .ct-case__sign {
  transform: rotate(45deg);
}

.page-contact .ct-case__body {
  padding: 0 16px 18px;
  border-top: 1px solid var(--ct-line);
}

.page-contact .ct-case__body p {
  font-size: 14.5px;
  color: var(--ct-ink-soft);
}

.page-contact .ct-case__prep {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--tide-600);
}

/* ---------- 回复节奏 ---------- */
.page-contact .ct-rhythm {
  padding: clamp(48px, 8vw, 104px) 0;
}

.page-contact .ct-rhythm__grid {
  display: grid;
  gap: clamp(18px, 2.6vw, 26px);
  margin-top: clamp(24px, 4vw, 44px);
}

.page-contact .ct-rhythm__item {
  padding: 6px 0 6px 18px;
  border-left: 3px solid var(--cyan-400);
}

.page-contact .ct-rhythm__item:nth-child(3) {
  border-left-color: var(--coral-500);
}

.page-contact .ct-rhythm__item h3 {
  font-family: var(--font-display);
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 600;
}

.page-contact .ct-rhythm__item p {
  font-size: 14.5px;
  color: var(--ct-ink-soft);
}

/* ---------- 准备信息与呼应面板 ---------- */
.page-contact .ct-prep {
  padding: 0 0 clamp(48px, 8vw, 104px);
}

.page-contact .ct-prep__panel {
  padding: clamp(22px, 3.4vw, 42px);
  border: 2px solid var(--ink-950);
  background: var(--white-050);
}

.page-contact .ct-prep__list {
  display: grid;
  gap: 16px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .ct-prep__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  font-size: 14.5px;
  color: var(--ct-ink-soft);
}

.page-contact .ct-prep__list strong {
  color: var(--ink-950);
  font-weight: 700;
}

.page-contact .ct-prep__idx {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--coral-500);
}

.page-contact .ct-echo {
  margin-top: clamp(30px, 5vw, 54px);
}

.page-contact .ct-echo__box {
  display: grid;
  gap: 22px;
  padding: clamp(20px, 3.4vw, 38px);
  background: var(--abyss-800);
  border: 2px solid var(--ink-950);
  box-shadow: 10px 10px 0 0 var(--cyan-400);
  color: var(--white-050);
}

.page-contact .ct-echo__box .eyebrow {
  color: var(--cyan-400);
}

.page-contact .ct-echo__box h3 {
  margin-top: 8px;
  font-family: var(--font-display);
  font-size: clamp(20px, 3vw, 29px);
  font-weight: 400;
  color: var(--white-050);
}

.page-contact .ct-echo__box p {
  max-width: 54ch;
  font-size: 14.5px;
  color: var(--ct-light-soft);
}

.page-contact .ct-echo__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-content: start;
}

.page-contact .ct-echo__acts .btn {
  text-decoration: none;
}

.page-contact .ct-echo__acts .btn--ghost {
  color: var(--white-050);
  border: 1px solid var(--ct-line-dark);
  background: transparent;
  box-shadow: none;
}

.page-contact .ct-echo__acts .btn--ghost:hover,
.page-contact .ct-echo__acts .btn--ghost:focus-visible {
  border-color: var(--cyan-400);
  color: var(--cyan-400);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .ct-case-list {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .page-contact .ct-prep__list {
    grid-template-columns: 1fr 1fr;
    gap: 18px 24px;
  }
}

@media (min-width: 860px) {
  .page-contact .ct-hero__body {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-contact .ct-steps {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .page-contact .ct-steps > li:nth-child(2) {
    margin-top: clamp(24px, 4vw, 48px);
  }

  .page-contact .ct-rhythm__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 940px) {
  .page-contact .ct-channels__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

@media (max-width: 400px) {
  .page-contact .ct-sec-head {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .page-contact .ct-case__sum {
    font-size: 15.5px;
    gap: 10px;
  }

  .page-contact .ct-echo__box {
    box-shadow: 6px 6px 0 0 var(--cyan-400);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-channel__copy,
  .page-contact .ct-case__sign {
    transition: none;
  }
}
<<<END>>>