/* ===== 反馈通道页 · page-contact ===== */

.page-contact {
  --fb-gap: 24px;
  position: relative;
  overflow-x: clip;
}

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

.page-contact .breadcrumb {
  margin-top: 24px;
}

/* ---------- 首屏 ---------- */

.page-contact .fb-hero {
  position: relative;
  padding-block: clamp(28px, 5vw, 56px) clamp(48px, 7vw, 88px);
  border-bottom: 1px solid var(--line-500);
}

.page-contact .fb-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-overlay) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-overlay) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 76%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 76%);
  pointer-events: none;
}

.page-contact .fb-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-contact .fb-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-contact .fb-hero__main .display {
  margin: 18px 0 20px;
  text-wrap: balance;
}

.page-contact .fb-hero__main .lede {
  max-width: 56ch;
}

.page-contact .fb-hero__actions {
  margin-top: 30px;
  flex-wrap: wrap;
  gap: 12px;
}

/* 状态板 */

.page-contact .fb-status {
  border: 1px solid var(--line-500);
  background: linear-gradient(180deg, var(--ink-750) 0%, var(--ink-850) 100%);
  padding: 20px 20px 18px;
}

.page-contact .fb-status__head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-500);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--cyan-200);
}

.page-contact .fb-status__list {
  margin: 0;
  padding: 0;
}

.page-contact .fb-status__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(44, 74, 110, .55);
}

.page-contact .fb-status__row:last-child {
  border-bottom: 0;
}

.page-contact .fb-status__row dt {
  font-size: 13px;
  color: var(--muted-450);
  letter-spacing: .02em;
}

.page-contact .fb-status__row dd {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--paper-050);
  font-variant-numeric: tabular-nums;
}

.page-contact .fb-status__note {
  margin: 10px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted-450);
}

/* ---------- 自查三步 ---------- */

.page-contact .fb-check__sub {
  max-width: 60ch;
  margin-top: 10px;
}

.page-contact .fb-check__list {
  list-style: none;
  margin: 36px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-500);
}

.page-contact .fb-check__item {
  border-bottom: 1px solid var(--line-500);
}

.page-contact .fb-step {
  border: 0;
  background: transparent;
}

.page-contact .fb-step__summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 22px 0;
  cursor: pointer;
  list-style: none;
  transition: color 160ms var(--ease);
}

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

.page-contact .fb-step__summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--orange-500);
  padding-left: 4px;
}

.page-contact .fb-step[open] .fb-step__summary::after {
  content: "−";
}

.page-contact .fb-step__summary:hover,
.page-contact .fb-step__summary:focus-visible {
  color: var(--cyan-400);
}

.page-contact .fb-step__summary:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: 4px;
}

.page-contact .fb-step__num {
  font-size: clamp(30px, 5vw, 44px);
  line-height: .9;
  font-weight: 700;
  color: var(--cyan-400);
  font-variant-numeric: tabular-nums;
}

.page-contact .fb-step__title {
  font-size: clamp(17px, 2.4vw, 21px);
  font-weight: 700;
  color: var(--paper-050);
  letter-spacing: -.01em;
}

.page-contact .fb-step__state {
  font-size: 13px;
  color: var(--muted-450);
  border: 1px solid var(--line-500);
  padding: 4px 8px;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.page-contact .fb-step__body {
  padding: 0 0 26px 0;
  max-width: 68ch;
}

.page-contact .fb-step__body p {
  margin: 0 0 12px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--paper-050);
}

.page-contact .fb-step__path {
  display: inline-block;
  margin: 4px 0 0;
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--cyan-200);
  border-left: 2px solid var(--cyan-400);
  padding: 2px 0 2px 10px;
}

/* ---------- 信息清单 ---------- */

.page-contact .fb-info__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}

.page-contact .fb-info__lede {
  max-width: 58ch;
  margin-top: 10px;
}

.page-contact .fb-fields {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
  background: var(--line-500);
  border: 1px solid var(--line-500);
}

.page-contact .fb-field {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  padding: 22px 18px;
  background: var(--ink-850);
  transition: background 160ms var(--ease);
}

.page-contact .fb-field:hover {
  background: var(--ink-750);
}

.page-contact .fb-field__num {
  font-size: 26px;
  line-height: 1;
  font-weight: 700;
  color: var(--orange-500);
  font-variant-numeric: tabular-nums;
  padding-top: 3px;
}

.page-contact .fb-field__body .h3 {
  margin: 0 0 8px;
  font-size: 17px;
}

.page-contact .fb-field__hint {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--paper-050);
}

.page-contact .fb-field__path {
  display: block;
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--muted-450);
}

.page-contact .fb-info__figure {
  border: 1px solid var(--line-500);
  margin: 0;
  align-self: start;
}

.page-contact .fb-info__figure .figure__img {
  width: 100%;
  object-fit: cover;
}

.page-contact .fb-info__figure .figure__cap {
  padding: 14px 16px;
  border-top: 1px solid var(--line-500);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted-450);
}

/* ---------- 客服渠道 ---------- */

.page-contact .fb-channels__sub {
  max-width: 46ch;
}

.page-contact .fb-channels__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 36px;
}

.page-contact .fb-channel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px 20px 22px;
  border: 1px solid var(--line-500);
  background: linear-gradient(180deg, var(--ink-750) 0%, var(--ink-850) 62%);
  transition: border-color 160ms var(--ease), transform 160ms var(--ease);
}

.page-contact .fb-channel:hover {
  border-color: var(--cyan-400);
  transform: translateY(-2px);
}

.page-contact .fb-channel__idx {
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--cyan-400);
  font-variant-numeric: tabular-nums;
}

.page-contact .fb-channel__title {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--paper-050);
}

.page-contact .fb-channel__value {
  margin: 0;
  font-size: clamp(14px, 2vw, 16px);
  line-height: 1.6;
  font-weight: 700;
  color: var(--cyan-200);
  word-break: break-word;
  letter-spacing: .01em;
}

.page-contact .fb-channel__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted-450);
}

.page-contact .fb-channel .copy-btn {
  margin-top: auto;
  align-self: flex-start;
}

.page-contact .fb-channel__icp {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted-450);
  border-top: 1px solid var(--line-500);
  padding-top: 12px;
}

/* ---------- 常见类型 ---------- */

.page-contact .fb-types__sub {
  max-width: 60ch;
  margin-top: 10px;
}

.page-contact .fb-types__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  margin-top: 34px;
  background: var(--line-500);
  border: 1px solid var(--line-500);
}

.page-contact .fb-type {
  background: var(--ink-850);
  padding: 24px 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: background 160ms var(--ease);
}

.page-contact .fb-type:hover {
  background: var(--ink-750);
}

.page-contact .fb-type__title {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper-050);
}

.page-contact .fb-type__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted-450);
}

.page-contact .fb-type__link {
  margin-top: auto;
  padding-top: 6px;
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  align-self: flex-start;
  transition: border-color 160ms var(--ease), color 160ms var(--ease);
}

.page-contact .fb-type__link:hover,
.page-contact .fb-type__link:focus-visible {
  color: var(--cyan-200);
  border-bottom-color: var(--cyan-400);
}

/* ---------- 流程带 ---------- */

.page-contact .fb-flow__band {
  position: relative;
  border: 1px solid var(--line-500);
  background: var(--ink-850);
  overflow: hidden;
}

.page-contact .fb-flow__art {
  position: relative;
  height: 150px;
  overflow: hidden;
  border-bottom: 1px solid var(--line-500);
  background: var(--ink-950);
}

.page-contact .fb-flow__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .68;
}

.page-contact .fb-flow__content {
  padding: 28px 20px 30px;
}

.page-contact .fb-flow__title {
  margin: 14px 0 26px;
}

.page-contact .fb-flow__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line-500);
}

.page-contact .fb-flow__step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line-500);
}

.page-contact .fb-flow__num {
  font-size: 22px;
  line-height: 1;
  font-weight: 700;
  color: var(--cyan-400);
  font-variant-numeric: tabular-nums;
  padding-top: 2px;
}

.page-contact .fb-flow__name {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper-050);
  letter-spacing: .01em;
}

.page-contact .fb-flow__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted-450);
  max-width: 62ch;
}

.page-contact .fb-flow__note {
  margin: 20px 0 0;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan-200);
  text-transform: uppercase;
}

/* ---------- 收尾 ---------- */

.page-contact .fb-closing {
  margin: 48px 0 8px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted-450);
}

.page-contact .fb-closing a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-contact .fb-closing a:hover {
  color: var(--cyan-200);
}

/* ---------- 窄屏保险 ---------- */

@media (max-width: 480px) {
  .page-contact .fb-step__summary {
    grid-template-columns: auto 1fr;
    gap: 12px;
  }

  .page-contact .fb-step__state {
    grid-column: 2;
    justify-self: start;
    margin-top: 6px;
  }

  .page-contact .fb-step__summary::after {
    display: none;
  }

  .page-contact .fb-status__row {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
}

/* ---------- 桌面端 ---------- */

@media (min-width: 720px) {
  .page-contact .fb-channels__row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 2px;
    background: var(--line-500);
    border: 1px solid var(--line-500);
  }

  .page-contact .fb-channel {
    border: 0;
    background: var(--ink-850);
  }

  .page-contact .fb-channel:hover {
    border-color: transparent;
    background: var(--ink-750);
  }

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

@media (min-width: 900px) {
  .page-contact .fb-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: 48px;
    align-items: end;
  }

  .page-contact .fb-info__grid {
    grid-template-columns: 7fr 5fr;
    gap: 48px;
    align-items: start;
  }

  .page-contact .fb-info__figure {
    position: sticky;
    top: 96px;
  }
}

@media (min-width: 1080px) {
  .page-contact .fb-types__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .fb-flow__band {
    display: grid;
    grid-template-columns: 5fr 7fr;
  }

  .page-contact .fb-flow__art {
    height: auto;
    min-height: 320px;
    border-bottom: 0;
    border-right: 1px solid var(--line-500);
  }

  .page-contact .fb-flow__content {
    padding: 40px 40px 42px;
  }

  .page-contact .fb-flow__steps {
    border-top: 0;
  }

  .page-contact .fb-flow__step {
    grid-template-columns: auto 1fr;
    padding: 18px 0;
  }

  .page-contact .fb-flow__step:first-child {
    padding-top: 6px;
  }
}