.page-contact {
  --ct-gap: clamp(20px, 3vw, 32px);
  --ct-line-soft: rgba(42, 54, 112, 0.45);
  background:
    radial-gradient(1100px 560px at 82% -6%, rgba(63, 240, 228, 0.10), transparent 62%),
    radial-gradient(760px 520px at 6% 34%, rgba(255, 122, 47, 0.07), transparent 66%),
    linear-gradient(178deg, var(--ink-900) 0%, var(--violet-900) 46%, var(--ink-900) 100%);
  color: var(--paper-100);
  font-family: var(--font-head);
  overflow-x: clip;
  padding-bottom: clamp(48px, 7vw, 92px);
}

/* ---------- 首屏 ---------- */

.page-contact .ct-hero {
  position: relative;
  padding: clamp(24px, 4vw, 44px) 0 clamp(36px, 5vw, 64px);
  overflow: hidden;
}

.page-contact .ct-hero::before {
  content: "";
  position: absolute;
  inset: -10% -5% auto -5%;
  height: 92%;
  background: linear-gradient(112deg, transparent 42%, rgba(26, 17, 64, 0.9) 58%, rgba(42, 54, 112, 0.42) 100%);
  clip-path: polygon(0 26%, 100% 0, 100% 100%, 0 80%);
  pointer-events: none;
}

.page-contact .ct-hero .hy-shell {
  position: relative;
  z-index: 1;
}

.page-contact .ct-hero__eyebrow {
  margin: clamp(18px, 3vw, 30px) 0 12px;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--cyan-400);
}

.page-contact .ct-hero__eyebrow .hy-mono {
  font-family: var(--font-mono);
  letter-spacing: 0.2em;
}

.page-contact .ct-hero__title {
  margin: 0 0 16px;
  font-size: clamp(30px, 5.4vw, 52px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: 0.04em;
}

.page-contact .ct-hero__lead {
  max-width: 62ch;
  margin: 0 0 var(--ct-gap);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--slate-400);
}

/* 联系卡片：纸张叠层 + 印刷描边 */

.page-contact .ct-contact {
  position: relative;
  display: grid;
  gap: clamp(18px, 3vw, 28px);
  padding: clamp(18px, 3vw, 30px);
  background: var(--panel);
  border: var(--line);
  border-radius: var(--radius);
  box-shadow:
    9px 9px 0 rgba(63, 240, 228, 0.10),
    18px 18px 0 rgba(255, 122, 47, 0.07);
}

.page-contact .ct-contact__stack {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.page-contact .ct-channel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 9px;
  min-width: 0;
  padding: 20px 16px 16px;
  background: linear-gradient(165deg, rgba(16, 26, 61, 0.94), rgba(26, 17, 64, 0.7));
  border: 1px solid var(--mist-600);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease-out), transform var(--dur) var(--ease-out);
}

.page-contact .ct-channel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan-400), transparent 80%);
}

.page-contact .ct-channel:nth-child(2)::before {
  background: linear-gradient(90deg, var(--orange-500), transparent 80%);
}

.page-contact .ct-channel:nth-child(3)::before {
  background: linear-gradient(90deg, var(--mist-600), transparent 80%);
}

.page-contact .ct-channel:hover {
  border-color: rgba(63, 240, 228, 0.5);
  transform: translateY(-2px);
}

.page-contact .ct-channel__label {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--slate-400);
}

.page-contact .ct-channel__value {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--white);
  word-break: break-word;
}

.page-contact .ct-channel__value .hy-mono {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.01em;
  word-break: break-all;
}

.page-contact .ct-channel__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--slate-400);
}

.page-contact .ct-channel__copy {
  align-self: flex-start;
  margin-top: auto;
  padding: 6px 12px;
  font: inherit;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan-400);
  background: transparent;
  border: 1px solid rgba(63, 240, 228, 0.42);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}

.page-contact .ct-channel__copy:hover,
.page-contact .ct-channel__copy:focus-visible {
  background: rgba(63, 240, 228, 0.14);
  color: var(--white);
  outline: none;
}

.page-contact .ct-aside {
  display: grid;
  gap: 12px;
  align-content: start;
  min-width: 0;
}

.page-contact .ct-aside__frame {
  position: relative;
  border: 1px solid var(--mist-600);
  border-radius: var(--radius);
  overflow: hidden;
  background: linear-gradient(160deg, var(--indigo-800), var(--violet-900));
}

.page-contact .ct-aside__frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  opacity: 0.86;
}

.page-contact .ct-aside__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(63, 240, 228, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(63, 240, 228, 0.07) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

.page-contact .ct-aside__tip {
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid var(--orange-500);
  font-size: 13.5px;
  line-height: 1.76;
  color: var(--slate-400);
}

.page-contact .ct-aside__tip strong {
  color: var(--paper-100);
}

/* ---------- 章节骨架 ---------- */

.page-contact .ct-support,
.page-contact .ct-urgent,
.page-contact .ct-template,
.page-contact .ct-when {
  padding-top: clamp(52px, 7vw, 92px);
}

.page-contact .hy-section__num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: clamp(42px, 8vw, 92px);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: 0.06em;
  color: rgba(63, 240, 228, 0.22);
}

.page-contact .hy-section__title {
  margin: 0 0 12px;
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: 0.04em;
}

.page-contact .hy-section__lead {
  max-width: 64ch;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--slate-400);
}

/* ---------- 支持范围 ---------- */

.page-contact .ct-support__grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(20px, 3vw, 32px);
}

.page-contact .ct-support__item {
  border: 1px solid var(--mist-600);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(16, 26, 61, 0.82), rgba(26, 17, 64, 0.55));
  transition: border-color var(--dur) var(--ease-out);
}

.page-contact .ct-support__item[open] {
  border-color: rgba(63, 240, 228, 0.45);
}

.page-contact .ct-support__summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.03em;
}

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

.page-contact .ct-support__icon {
  display: grid;
  place-items: center;
  flex: 0 0 38px;
  width: 38px;
  height: 38px;
  color: var(--cyan-400);
  background: rgba(63, 240, 228, 0.07);
  border: 1px solid var(--mist-600);
  border-radius: var(--radius);
}

.page-contact .ct-support__name {
  flex: 1 1 auto;
  min-width: 0;
}

.page-contact .ct-support__plus {
  position: relative;
  flex: 0 0 14px;
  width: 14px;
  height: 14px;
}

.page-contact .ct-support__plus::before,
.page-contact .ct-support__plus::after {
  content: "";
  position: absolute;
  background: var(--slate-400);
}

.page-contact .ct-support__plus::before {
  left: 0;
  right: 0;
  top: 6.5px;
  height: 1.5px;
}

.page-contact .ct-support__plus::after {
  top: 0;
  bottom: 0;
  left: 6.25px;
  width: 1.5px;
  transition: transform var(--dur) var(--ease-out);
}

.page-contact .ct-support__item[open] .ct-support__plus::after {
  transform: scaleY(0);
}

.page-contact .ct-support__body {
  padding: 0 18px 18px 68px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--slate-400);
}

.page-contact .ct-support__body p {
  margin: 0;
}

.page-contact .ct-support__body ul {
  display: grid;
  gap: 6px;
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .ct-support__body li {
  position: relative;
  padding-left: 16px;
}

.page-contact .ct-support__body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 7px;
  height: 1.5px;
  background: var(--cyan-400);
}

/* ---------- 加急 ---------- */

.page-contact .ct-urgent__panel {
  position: relative;
  padding: clamp(22px, 3.4vw, 40px);
  border: 1px solid rgba(255, 122, 47, 0.42);
  border-left: 3px solid var(--orange-500);
  border-radius: var(--radius);
  background: linear-gradient(140deg, rgba(255, 122, 47, 0.11), rgba(16, 26, 61, 0.88) 52%, rgba(26, 17, 64, 0.72));
  overflow: hidden;
}

.page-contact .ct-urgent__flag {
  margin: 0 0 14px;
}

.page-contact .ct-urgent__title {
  margin: 0 0 14px;
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 900;
  line-height: 1.28;
  letter-spacing: 0.04em;
}

.page-contact .ct-urgent__text {
  max-width: 66ch;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--paper-100);
}

.page-contact .ct-urgent__steps {
  display: grid;
  gap: 14px;
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
  list-style: none;
  counter-reset: ctstep;
}

.page-contact .ct-urgent__steps li {
  position: relative;
  padding-left: 46px;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--slate-400);
  counter-increment: ctstep;
}

.page-contact .ct-urgent__steps li strong {
  color: var(--paper-100);
}

.page-contact .ct-urgent__steps li::before {
  content: "0" counter(ctstep);
  position: absolute;
  left: 0;
  top: 1px;
  padding: 2px 7px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--orange-500);
  border: 1px solid rgba(255, 122, 47, 0.45);
  border-radius: var(--radius);
}

.page-contact .ct-urgent__foot {
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--ct-line-soft);
  font-size: 13.5px;
  line-height: 1.74;
  color: var(--slate-400);
}

/* ---------- 模板 ---------- */

.page-contact .ct-shot {
  margin-top: clamp(20px, 3vw, 30px);
}

.page-contact .ct-template__block {
  margin-top: clamp(18px, 3vw, 28px);
  border: 1px solid var(--mist-600);
  border-radius: var(--radius);
  background: rgba(7, 12, 31, 0.74);
  overflow: hidden;
}

.page-contact .ct-template__bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--mist-600);
  background: linear-gradient(90deg, rgba(16, 26, 61, 0.96), rgba(26, 17, 64, 0.6));
}

.page-contact .ct-template__dots {
  flex: 0 0 8px;
  width: 8px;
  height: 8px;
  margin-right: 22px;
  border-radius: 50%;
  background: var(--orange-500);
  box-shadow: 14px 0 0 rgba(63, 240, 228, 0.75), 28px 0 0 var(--mist-600);
}

.page-contact .ct-template__name {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--slate-400);
}

.page-contact .ct-template__copy {
  flex: 0 0 auto;
  padding: 6px 14px;
  font: inherit;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-900);
  background: var(--cyan-400);
  border: 0;
  border-radius: var(--radius);
  cursor: pointer;
  transition: box-shadow var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}

.page-contact .ct-template__copy:hover,
.page-contact .ct-template__copy:focus-visible {
  box-shadow: 0 0 0 3px rgba(63, 240, 228, 0.22);
  transform: translateY(-1px);
  outline: none;
}

.page-contact .ct-template__code {
  padding: clamp(16px, 2.6vw, 26px);
  background: repeating-linear-gradient(180deg, rgba(42, 54, 112, 0.12) 0 27px, transparent 27px 54px);
}

.page-contact .ct-template__fields {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px 0;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.9;
}

.page-contact .ct-template__fields dt {
  padding: 10px 0 2px;
  color: var(--cyan-400);
  letter-spacing: 0.06em;
}

.page-contact .ct-template__fields dd {
  margin: 0;
  padding: 0 0 10px;
  color: var(--paper-100);
  word-break: break-word;
}

/* ---------- 常见场景 ---------- */

.page-contact .ct-when__grid {
  display: grid;
  gap: 16px;
  margin-top: clamp(20px, 3vw, 32px);
}

.page-contact .ct-when__col {
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--mist-600);
  border-radius: var(--radius);
  background: linear-gradient(158deg, rgba(16, 26, 61, 0.78), rgba(26, 17, 64, 0.5));
  transition: border-color var(--dur) var(--ease-out);
}

.page-contact .ct-when__col:hover {
  border-color: rgba(63, 240, 228, 0.4);
}

.page-contact .ct-when__title {
  margin: 0 0 14px;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--paper-100);
}

.page-contact .ct-when__list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .ct-when__list li {
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--slate-400);
}

.page-contact .ct-when__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 10px;
  height: 1.5px;
  background: var(--cyan-400);
}

.page-contact .ct-when__list a {
  color: var(--cyan-400);
  text-decoration: underline;
  text-decoration-color: rgba(63, 240, 228, 0.42);
  text-underline-offset: 3px;
}

.page-contact .ct-when__list a:hover {
  text-decoration-color: var(--cyan-400);
}

/* ---------- 备案条 ---------- */

.page-contact .ct-meta {
  padding-top: clamp(52px, 7vw, 88px);
}

.page-contact .ct-meta__title {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--slate-400);
}

.page-contact .ct-meta__line {
  margin: 14px 0 0;
  padding: 16px 0;
  border-top: 1px solid var(--mist-600);
  border-bottom: 1px solid var(--mist-600);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--paper-100);
  word-break: break-word;
}

.page-contact .ct-meta__note {
  max-width: 70ch;
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--slate-400);
}

.page-contact .ct-meta__note a {
  color: var(--cyan-400);
  text-decoration-color: rgba(63, 240, 228, 0.42);
  text-underline-offset: 3px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 600px) {
  .page-contact .ct-contact__stack {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-contact .ct-support__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .ct-when__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .ct-template__fields {
    grid-template-columns: 152px minmax(0, 1fr);
    column-gap: 20px;
  }

  .page-contact .ct-template__fields dt {
    padding: 0;
    line-height: 1.9;
    text-align: right;
  }

  .page-contact .ct-template__fields dd {
    padding: 0 0 12px;
  }
}

@media (min-width: 960px) {
  .page-contact .ct-contact {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.85fr);
    align-items: stretch;
  }
}

@media (max-width: 560px) {
  .page-contact .ct-support__body {
    padding-left: 18px;
  }

  .page-contact .ct-urgent__steps li {
    padding-left: 40px;
  }

  .page-contact .ct-contact {
    box-shadow:
      5px 5px 0 rgba(63, 240, 228, 0.10),
      10px 10px 0 rgba(255, 122, 47, 0.07);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-channel,
  .page-contact .ct-channel__copy,
  .page-contact .ct-support__item,
  .page-contact .ct-support__plus::after,
  .page-contact .ct-when__col,
  .page-contact .ct-template__copy {
    transition: none;
  }

  .page-contact .ct-channel:hover,
  .page-contact .ct-template__copy:hover {
    transform: none;
  }
}