.page-contact {
  --ct-line: rgba(0, 240, 200, 0.2);
  --ct-line-soft: rgba(124, 255, 228, 0.1);
  --ct-gap: clamp(16px, 2.6vw, 28px);
  --ct-pad: clamp(20px, 3.4vw, 40px);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  position: relative;
  padding-block: clamp(18px, 3vw, 36px) clamp(26px, 4.5vw, 52px);
  background-image: radial-gradient(120% 90% at 90% 0%, rgba(0, 240, 200, 0.09), transparent 62%);
}

.page-contact .ct-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-1);
  line-height: 0.96;
  letter-spacing: -0.03em;
  color: var(--white);
}

.page-contact .ct-hero__bar {
  display: block;
  width: 72px;
  height: 4px;
  margin-top: 22px;
  background: var(--amber);
}

.page-contact .ct-hero__lede {
  margin: 22px 0 0;
  max-width: 48ch;
  font-size: var(--fs-4);
  line-height: 1.75;
  color: rgba(233, 244, 241, 0.88);
}

.page-contact .ct-hero__note {
  display: none;
}

/* ---------- 联系板 + 窄清单 ---------- */
.page-contact .ct-channel {
  padding-block: clamp(8px, 2vw, 16px) clamp(28px, 5vw, 60px);
}

.page-contact .ct-channel__grid {
  display: grid;
  gap: var(--ct-gap);
}

.page-contact .ct-board {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: var(--ct-pad);
  background: var(--board-deep);
  border: 1px solid var(--line);
}

.page-contact .ct-board__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  pointer-events: none;
}

.page-contact .ct-board > *:not(.ct-board__bg) {
  position: relative;
  z-index: 1;
}

.page-contact .ct-board__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-3);
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-contact .ct-board__list {
  list-style: none;
  margin: clamp(18px, 2.5vw, 28px) 0 0;
  padding: 0;
}

.page-contact .ct-board__row {
  padding-block: clamp(16px, 2.4vw, 24px);
  border-top: 1px solid var(--ct-line-soft);
}

.page-contact .ct-board__row:first-child {
  border-top: 1px solid var(--line-strong);
}

.page-contact .ct-board__label {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-5);
  letter-spacing: 0.18em;
  color: var(--mist);
}

.page-contact .ct-board__value {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: clamp(17px, 2.7vw, 26px);
  line-height: 1.35;
  color: var(--cyan);
  text-decoration: none;
  overflow-wrap: anywhere;
  transition: color 140ms var(--ease);
}

.page-contact .ct-board__value:hover,
.page-contact .ct-board__value:focus-visible {
  color: var(--cyan-soft);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-contact .ct-board__addr {
  display: block;
  margin-top: 10px;
  font-family: var(--font-body);
  font-size: clamp(16px, 2.2vw, 20px);
  font-weight: 700;
  line-height: 1.55;
  color: var(--white);
}

.page-contact .ct-board__note {
  margin: 10px 0 0;
  max-width: 44ch;
  font-size: var(--fs-5);
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .ct-board__hours {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--amber);
  font-family: var(--font-mono);
  font-size: var(--fs-5);
  line-height: 1.7;
  color: var(--white);
}

.page-contact .ct-elements {
  padding: var(--ct-pad);
  background: var(--board-lift);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-contact .ct-elements__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-3);
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-contact .ct-elements__list {
  list-style: none;
  margin: clamp(16px, 2.2vw, 22px) 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-contact .ct-elements__item {
  padding-top: 14px;
  border-top: 1px solid var(--ct-line-soft);
}

.page-contact .ct-elements__item:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-contact .ct-elements__item strong {
  display: block;
  font-size: var(--fs-4);
  font-weight: 700;
  line-height: 1.5;
  color: var(--cyan-soft);
}

.page-contact .ct-elements__item span {
  display: block;
  margin-top: 5px;
  font-size: var(--fs-5);
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 纠错清单 ---------- */
.page-contact .ct-report {
  padding-block: clamp(32px, 5vw, 72px);
  border-top: 1px solid var(--ct-line-soft);
}

.page-contact .ct-report__head {
  max-width: 62ch;
}

.page-contact .ct-report__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-2);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-contact .ct-report__sub {
  margin: 16px 0 0;
  max-width: 58ch;
  font-size: var(--fs-4);
  line-height: 1.75;
  color: rgba(233, 244, 241, 0.82);
}

.page-contact .ct-report__grid {
  margin-top: clamp(22px, 3vw, 36px);
  display: grid;
  gap: var(--ct-gap);
}

.page-contact .ct-checks {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .ct-checks__item {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding-block: clamp(14px, 1.8vw, 18px);
  border-top: 1px solid var(--ct-line-soft);
}

.page-contact .ct-checks__item:first-child {
  border-top: 1px solid var(--line-strong);
}

.page-contact .ct-checks__box {
  width: 20px;
  height: 20px;
  margin: 3px 0 0;
  accent-color: var(--cyan);
  cursor: pointer;
}

.page-contact .ct-checks__box:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-contact .ct-checks__label {
  display: block;
  cursor: pointer;
}

.page-contact .ct-checks__name {
  display: block;
  font-size: var(--fs-4);
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
}

.page-contact .ct-checks__idx {
  display: inline-block;
  margin-right: 10px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-contact .ct-checks__desc {
  display: block;
  margin-top: 6px;
  font-size: var(--fs-5);
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .ct-checks__box:checked + .ct-checks__label .ct-checks__name {
  color: var(--mist);
  text-decoration: line-through;
}

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

.page-contact .ct-template {
  background: rgba(6, 17, 15, 0.72);
  border: 1px solid var(--ct-line);
}

.page-contact .ct-template > summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: var(--fs-5);
  letter-spacing: 0.08em;
  color: var(--amber);
  transition: background-color 140ms var(--ease);
}

.page-contact .ct-template > summary::-webkit-details-marker {
  display: none;
}

.page-contact .ct-template > summary:hover {
  background: rgba(0, 240, 200, 0.06);
}

.page-contact .ct-template > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-contact .ct-template > summary::after {
  content: "+";
  font-size: 15px;
  color: var(--cyan);
}

.page-contact .ct-template[open] > summary::after {
  content: "–";
}

.page-contact .ct-template pre {
  margin: 0;
  padding: 2px 18px 20px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--cyan-soft);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.page-contact .ct-report__tip {
  margin: 0;
  font-size: var(--fs-5);
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .ct-report__btn {
  justify-self: start;
}

/* ---------- 合作 ---------- */
.page-contact .ct-coop {
  padding-block: clamp(32px, 5vw, 72px);
  border-top: 1px solid var(--ct-line-soft);
}

.page-contact .ct-coop__title {
  margin: 8px 0 0;
  max-width: 26ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-2);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-contact .ct-coop__grid {
  margin-top: clamp(20px, 3vw, 34px);
  display: grid;
  gap: clamp(22px, 3vw, 34px);
}

.page-contact .ct-coop__item {
  padding-top: 16px;
  border-top: 2px solid var(--amber);
}

.page-contact .ct-coop__item:nth-child(2) {
  border-top-color: var(--cyan);
}

.page-contact .ct-coop__item:nth-child(3) {
  border-top-color: var(--line-strong);
}

.page-contact .ct-coop__name {
  margin: 0;
  font-size: var(--fs-3);
  font-weight: 800;
  line-height: 1.3;
  color: var(--white);
}

.page-contact .ct-coop__text {
  margin: 12px 0 0;
  font-size: var(--fs-5);
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 处理流程 ---------- */
.page-contact .ct-flow {
  padding-block: clamp(32px, 5vw, 72px);
  border-top: 1px solid var(--ct-line-soft);
}

.page-contact .ct-flow__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-2);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-contact .ct-flow__grid {
  margin-top: clamp(20px, 3vw, 34px);
  display: grid;
  gap: var(--ct-gap);
}

.page-contact .ct-flow__figure {
  margin: 0;
  border: 1px solid var(--ct-line);
  background: var(--board-deep);
}

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

.page-contact .ct-flow__steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .ct-flow__step {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding-block: clamp(14px, 2vw, 20px);
  border-top: 1px solid var(--ct-line-soft);
}

.page-contact .ct-flow__step:first-child {
  border-top: 1px solid var(--line-strong);
}

.page-contact .ct-flow__num {
  padding-top: 3px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-contact .ct-flow__step-name {
  margin: 0;
  font-size: var(--fs-4);
  font-weight: 700;
  line-height: 1.45;
  color: var(--white);
}

.page-contact .ct-flow__step p {
  margin: 6px 0 0;
  font-size: var(--fs-5);
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 收尾与留白 ---------- */
.page-contact .ct-stop {
  padding-block: clamp(24px, 4vw, 48px) clamp(80px, 14vw, 180px);
  border-top: 1px solid var(--ct-line-soft);
}

.page-contact .ct-stop__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 32px;
  align-items: baseline;
  justify-content: space-between;
}

.page-contact .ct-stop__text {
  margin: 0;
  max-width: 44ch;
  font-size: var(--fs-4);
  line-height: 1.7;
  color: rgba(233, 244, 241, 0.85);
}

.page-contact .ct-stop__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
}

.page-contact .ct-stop__links a {
  font-family: var(--font-mono);
  font-size: var(--fs-5);
  letter-spacing: 0.06em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 120ms var(--ease), color 120ms var(--ease);
}

.page-contact .ct-stop__links a:hover,
.page-contact .ct-stop__links a:focus-visible {
  color: var(--cyan-soft);
  border-bottom-color: var(--cyan);
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-contact .ct-coop__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .ct-channel__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-contact .ct-elements {
    margin-top: clamp(32px, 5vw, 88px);
    margin-left: calc(var(--ct-gap) * -1.2);
  }

  .page-contact .ct-report__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-contact .ct-flow__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: start;
  }

  .page-contact .ct-flow__steps {
    margin-top: -6px;
  }
}

@media (min-width: 960px) {
  .page-contact .ct-hero {
    padding-right: clamp(60px, 6vw, 96px);
  }

  .page-contact .ct-hero__note {
    display: block;
    position: absolute;
    top: 48px;
    right: 0;
    margin: 0;
    writing-mode: vertical-rl;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.34em;
    color: var(--mist);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-board__value,
  .page-contact .ct-template > summary,
  .page-contact .ct-stop__links a {
    transition: none;
  }
}