.page-contact {
  --ct-gap: clamp(16px, 2.6vw, 34px);
  --ct-cut: 16px;
  --ct-section-gap: clamp(44px, 7vw, 88px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

/* ---------- 面包屑 ---------- */

.page-contact .contact-crumb {
  padding-top: clamp(18px, 3vw, 34px);
}

.page-contact .contact-crumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--text-2);
}

.page-contact .contact-crumb__list a {
  color: var(--text-2);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

.page-contact .contact-crumb__list a:hover,
.page-contact .contact-crumb__list a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
  outline: none;
}

.page-contact .contact-crumb__sep {
  color: var(--line);
}

.page-contact .contact-crumb__list [aria-current="page"] {
  color: var(--text);
}

/* ---------- 通用文字 ---------- */

.page-contact .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--cyan);
}

.page-contact .section-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.4vw, 2.3rem);
  line-height: 1.2;
  letter-spacing: -.02em;
  color: var(--text);
}

.page-contact .lead {
  margin: 0;
  max-width: 46ch;
  font-size: clamp(16px, 2vw, 18px);
  line-height: 1.8;
  color: var(--text-2);
}

.page-contact .media {
  margin: 0;
}

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

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    115deg,
    rgba(0, 229, 212, .07) 0 1px,
    transparent 1px 15px
  );
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 78%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 78%);
  pointer-events: none;
}

.page-contact .contact-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ct-gap);
  padding-top: clamp(22px, 5vw, 48px);
  padding-bottom: clamp(30px, 6vw, 62px);
}

.page-contact .contact-hero__title {
  margin: .3em 0 .55em;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.05rem, 6.4vw, 4.3rem);
  line-height: 1.08;
  letter-spacing: -.022em;
  color: var(--text);
}

.page-contact .contact-hero__lead {
  max-width: 42ch;
}

.page-contact .contact-hero__index {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 13px;
}

.page-contact .contact-hero__index a {
  display: inline-flex;
  align-items: baseline;
  color: var(--text-2);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

.page-contact .contact-hero__index a:hover,
.page-contact .contact-hero__index a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
  outline: none;
}

.page-contact .contact-hero__num {
  margin-right: 7px;
  color: var(--cyan);
}

.page-contact .contact-hero__card {
  position: relative;
  padding: 20px 22px 22px;
  background:
    linear-gradient(150deg, rgba(0, 229, 212, .16), rgba(76, 111, 255, .07) 52%, rgba(14, 20, 48, .9) 100%);
  border-left: 2px solid var(--cyan);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ct-cut)), calc(100% - var(--ct-cut)) 100%, 0 100%);
  animation: contact-rise .55s var(--ease) both;
}

.page-contact .contact-hero__card-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--text-2);
}

.page-contact .contact-hero__card-value {
  margin: 8px 0 10px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(2.5rem, 7vw, 3.5rem);
  line-height: 1;
  color: var(--cyan);
}

.page-contact .contact-hero__card-value span {
  margin-left: 5px;
  font-size: .3em;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--text-2);
}

.page-contact .contact-hero__card-note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-2);
}

@keyframes contact-rise {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 联系入口 ---------- */

.page-contact .contact-channels__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ct-gap);
}

.page-contact .contact-channels__note {
  margin: 0 0 20px;
  max-width: 56ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-2);
}

.page-contact .contact-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "label copy"
    "value copy"
    "note  copy";
  align-items: center;
  gap: 6px 18px;
  padding: 20px 22px;
  background: linear-gradient(155deg, #121A3E 0%, var(--panel) 64%);
  clip-path: polygon(0 var(--ct-cut), var(--ct-cut) 0, 100% 0, 100% 100%, 0 100%);
  animation: contact-rise .55s var(--ease) both;
}

.page-contact .contact-card + .contact-card {
  margin-top: 12px;
}

.page-contact .contact-card--flip {
  clip-path: polygon(0 0, 100% 0, 100% 100%, var(--ct-cut) 100%, 0 calc(100% - var(--ct-cut)));
}

.page-contact .contact-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: var(--ct-cut);
  width: 2px;
  height: 34px;
  background: var(--cyan);
}

.page-contact .contact-card--flip::before {
  top: auto;
  bottom: var(--ct-cut);
}

.page-contact .contact-card__label {
  grid-area: label;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--text-2);
}

.page-contact .contact-card__value {
  grid-area: value;
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(15px, 2.2vw, 19px);
  line-height: 1.45;
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-contact .contact-card__value--num {
  letter-spacing: .04em;
}

.page-contact .contact-card__address {
  grid-area: value;
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin: 0;
  font-family: var(--font-mono);
  color: var(--text);
}

.page-contact .contact-card__addr-a {
  font-size: 1.06em;
  line-height: 1.5;
}

.page-contact .contact-card__addr-b {
  font-size: 1em;
  line-height: 1.5;
}

.page-contact .contact-card__addr-c {
  font-size: .9em;
  line-height: 1.5;
  color: var(--text-2);
}

.page-contact .contact-card__note {
  grid-area: note;
  margin: 4px 0 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--text-2);
}

.page-contact .contact-copy {
  grid-area: copy;
  align-self: center;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text-2);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  cursor: pointer;
  transition: color .25s var(--ease), border-color .25s var(--ease), background-color .25s var(--ease);
}

.page-contact .contact-copy:hover,
.page-contact .contact-copy:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  outline: none;
}

.page-contact .contact-copy:active,
.page-contact .contact-copy[data-copied="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--cyan-ink);
}

.page-contact .contact-copy__state {
  font-size: 11px;
  letter-spacing: .02em;
  color: var(--cyan);
}

.page-contact .contact-copy__state:empty {
  display: none;
}

.page-contact .contact-copy[data-copied="true"] .contact-copy__state {
  color: var(--cyan-ink);
}

.page-contact .contact-channels__aside {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-contact .contact-channels__media {
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ct-cut)), calc(100% - var(--ct-cut)) 100%, 0 100%);
}

.page-contact .contact-channels__caption {
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid var(--blue);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text-2);
}

/* ---------- 渠道边界 ---------- */

.page-contact .boundary {
  margin-top: clamp(32px, 5vw, 56px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(14, 20, 48, .55);
}

.page-contact .boundary__summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 4px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  color: var(--text);
}

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

.page-contact .boundary__summary::before {
  content: "+";
  display: inline-block;
  width: 16px;
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 500;
  color: var(--cyan);
}

.page-contact .boundary[open] .boundary__summary::before {
  content: "–";
}

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

.page-contact .boundary__body {
  max-width: 68ch;
  padding: 0 4px 20px 26px;
}

.page-contact .boundary__body p {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--text-2);
}

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

/* ---------- 反馈前准备 ---------- */

.page-contact .contact-prepare {
  padding-top: var(--ct-section-gap);
}

.page-contact .contact-prepare__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ct-gap);
}

.page-contact .contact-prepare__text {
  margin: 0 0 14px;
  max-width: 42ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-2);
}

.page-contact .contact-prepare__policy {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-2);
}

.page-contact .contact-prepare__policy a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 212, .45);
  transition: border-color .25s var(--ease);
}

.page-contact .contact-prepare__policy a:hover,
.page-contact .contact-prepare__policy a:focus-visible {
  border-bottom-color: var(--cyan);
  outline: none;
}

.page-contact .checklist {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .check {
  margin: 0;
}

.page-contact .check__label {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 13px;
  padding: 15px 17px;
  border: 1px solid var(--line);
  background: var(--panel);
  cursor: pointer;
  transition: border-color .25s var(--ease), background-color .25s var(--ease);
}

.page-contact .check__label:hover {
  border-color: var(--blue);
}

.page-contact .check__input {
  width: 19px;
  height: 19px;
  margin: 3px 0 0;
  accent-color: var(--cyan);
  cursor: pointer;
}

.page-contact .check__label:has(.check__input:checked) {
  border-color: var(--cyan);
  background: linear-gradient(120deg, rgba(0, 229, 212, .12), var(--panel) 72%);
}

.page-contact .check__input:checked + .check__body .check__goal {
  color: var(--cyan);
}

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

.page-contact .check__body {
  display: block;
}

.page-contact .check__goal {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
  transition: color .25s var(--ease);
}

.page-contact .check__desc {
  display: block;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--text-2);
}

/* ---------- 常见反馈类型 ---------- */

.page-contact .contact-types {
  padding-top: var(--ct-section-gap);
}

.page-contact .types {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-contact .type {
  border-bottom: 1px solid var(--line);
}

.page-contact .type__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  grid-template-areas:
    "num name go"
    "num desc go";
  align-items: center;
  gap: 5px 18px;
  padding: 18px 6px;
  color: inherit;
  text-decoration: none;
  transition: background-color .25s var(--ease);
}

.page-contact .type__link:hover {
  background: rgba(0, 229, 212, .05);
}

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

.page-contact .type__num {
  grid-area: num;
  align-self: center;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-2);
}

.page-contact .type__name {
  grid-area: name;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 2.2vw, 20px);
  line-height: 1.35;
  color: var(--text);
}

.page-contact .type__desc {
  grid-area: desc;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--text-2);
}

.page-contact .type__go {
  grid-area: go;
  align-self: center;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--line);
  transition: color .25s var(--ease), transform .25s var(--ease);
}

.page-contact .type__link:hover .type__go,
.page-contact .type__link:focus-visible .type__go {
  color: var(--cyan);
  transform: translateX(4px);
}

/* ---------- 处理顺序 ---------- */

.page-contact .contact-rhythm {
  padding-top: var(--ct-section-gap);
}

.page-contact .contact-rhythm__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ct-gap);
}

.page-contact .steps {
  margin: 22px 0 24px;
  padding: 0;
  list-style: none;
}

.page-contact .step {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.page-contact .step:last-child {
  border-bottom: 1px solid var(--line);
}

.page-contact .step__num {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan);
}

.page-contact .step__name {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  color: var(--text);
}

.page-contact .step__desc {
  margin: 0;
  max-width: 56ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--text-2);
}

.page-contact .contact-rhythm__close {
  margin: 0;
  padding-left: 14px;
  border-left: 2px solid var(--orange);
  max-width: 54ch;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--text-2);
}

.page-contact .contact-rhythm__media {
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% 100%, var(--ct-cut) 100%, 0 calc(100% - var(--ct-cut)));
  background: var(--panel);
}

.page-contact .contact-rhythm__media .media__caption {
  padding: 12px 16px 14px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--text-2);
}

/* ---------- 响应式 ---------- */

@media (max-width: 639px) {
  .page-contact .contact-card {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "label"
      "value"
      "note"
      "copy";
    gap: 6px;
  }

  .page-contact .contact-copy {
    justify-self: start;
    margin-top: 10px;
  }

  .page-contact .contact-hero__title br {
    display: none;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
    align-items: end;
    gap: clamp(24px, 4vw, 56px);
    padding-bottom: clamp(40px, 7vw, 78px);
  }

  .page-contact .contact-prepare__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 6fr);
    align-items: start;
    gap: clamp(24px, 4vw, 56px);
  }

  .page-contact .contact-rhythm__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
    gap: clamp(24px, 4vw, 56px);
  }
}

@media (min-width: 1040px) {
  .page-contact .contact-channels__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
    gap: clamp(24px, 4vw, 56px);
  }

  .page-contact .contact-channels__aside {
    position: sticky;
    top: clamp(24px, 6vh, 72px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-hero__card,
  .page-contact .contact-card {
    animation: none;
  }

  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    transition-duration: .01ms !important;
  }
}