/* ================= 帮助中心 · 页面专属样式 ================= */
.page-faq {
  --faq-rail-w: 196px;
  --faq-gap: clamp(26px, 4.5vw, 58px);
  position: relative;
  display: block;
  padding-bottom: clamp(64px, 10vw, 118px);
  background:
    radial-gradient(115% 70% at 82% -8%, rgba(18, 224, 200, .13), transparent 62%),
    radial-gradient(85% 55% at 8% 14%, rgba(245, 194, 67, .06), transparent 72%),
    var(--ink-900);
  color: var(--fog);
  font-family: var(--font-body);
  font-size: var(--fs-1);
}

.page-faq .breadcrumb {
  padding-top: 20px;
  font-size: 14px;
  color: var(--dust);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 4vw, 48px) 0 clamp(32px, 5vw, 60px);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-cyan) 32%, var(--line-gold) 68%, transparent);
  opacity: .75;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  align-items: center;
  min-width: 0;
}

.page-faq .faq-hero__copy {
  min-width: 0;
}

.page-faq .faq-hero__copy > * + * {
  margin-top: 18px;
}

.page-faq .faq-hero__copy .lede {
  max-width: 60ch;
}

.page-faq .faq-hero__marks {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__media {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-card);
  border: 1px solid var(--line-cyan);
  box-shadow: 0 30px 70px rgba(7, 12, 31, .85), 0 0 0 1px rgba(18, 224, 200, .12);
  object-fit: cover;
}

.page-faq .faq-hero__media .media__caption {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--dust);
}

/* ---------- 主体骨架：左侧步骤条 + 右侧排查流 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: var(--faq-gap);
  padding-top: clamp(34px, 5vw, 62px);
  min-width: 0;
}

.page-faq .faq-rail-wrap {
  min-width: 0;
}

.page-faq .faq-rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 10px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-rail::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-rail__link {
  position: relative;
  flex: 0 0 auto;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background: var(--ink-800);
  color: var(--dust);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .02em;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--pale);
  border-color: var(--line-cyan);
}

.page-faq .faq-rail__link.is-active {
  color: var(--ink-900);
  background: linear-gradient(120deg, var(--cyan), var(--gold));
  border-color: transparent;
  box-shadow: 0 0 22px rgba(18, 224, 200, .34);
}

.page-faq .faq-flow {
  min-width: 0;
}

.page-faq .faq-block {
  padding: clamp(32px, 4.6vw, 54px) 0;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-block:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-block .section-head {
  max-width: 62ch;
  margin-bottom: clamp(22px, 3.4vw, 36px);
}

.page-faq .faq-block .section-head .copy {
  color: var(--dust);
}

/* ---------- 三选一分流 ---------- */
.page-faq .faq-fork {
  display: grid;
  gap: 16px;
}

.page-faq .fork-pill {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(20px, 2.6vw, 28px);
  border-radius: var(--radius-card);
  border: 1px solid var(--line);
  background: linear-gradient(155deg, var(--ink-800) 0%, rgba(7, 12, 31, .92) 100%);
  color: var(--fog);
  text-decoration: none;
  transition: transform var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}

.page-faq .fork-pill:hover,
.page-faq .fork-pill:focus-visible {
  transform: translateY(-3px);
  border-color: var(--line-cyan);
  box-shadow: 0 22px 48px rgba(7, 12, 31, .8), inset 0 0 0 1px rgba(18, 224, 200, .18);
}

.page-faq .fork-pill__no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .22em;
  color: var(--gold);
}

.page-faq .fork-pill__title {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.01em;
  line-height: 1.3;
  color: var(--pale);
}

.page-faq .fork-pill--lg .fork-pill__title {
  font-size: var(--fs-3);
}

.page-faq .fork-pill--md .fork-pill__title,
.page-faq .fork-pill--sm .fork-pill__title {
  font-size: var(--fs-2);
}

.page-faq .fork-pill__desc {
  display: block;
  font-size: 15px;
  line-height: 1.8;
  color: var(--dust);
}

.page-faq .fork-pill__go {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--cyan);
}

/* ---------- 自检步骤卡 ---------- */
.page-faq .step-card {
  position: relative;
  margin-bottom: 16px;
  padding: clamp(22px, 3vw, 30px) clamp(20px, 3vw, 32px) clamp(16px, 2.4vw, 22px) clamp(64px, 7vw, 84px);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--ink-800);
  min-width: 0;
}

.page-faq .step-card__num {
  position: absolute;
  left: clamp(20px, 2.4vw, 32px);
  top: clamp(24px, 3vw, 32px);
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-faq .step-card__num::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -16px;
  width: 9px;
  height: 9px;
  margin-left: -4.5px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 14px rgba(18, 224, 200, .95);
}

.page-faq .step-card h3 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-2);
  letter-spacing: -.01em;
  color: var(--pale);
}

.page-faq .step-line {
  display: grid;
  gap: 6px;
  padding: 14px 0;
  border-top: 1px dashed var(--line-soft);
}

.page-faq .step-line:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.page-faq .step-line__act {
  display: inline-block;
  justify-self: start;
  padding: 6px 12px;
  border-radius: 8px;
  background: var(--ink-600);
  border: 1px solid rgba(18, 224, 200, .28);
  color: var(--pale);
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
}

.page-faq .step-line__exp {
  display: block;
  font-size: 15px;
  line-height: 1.8;
  color: var(--dust);
}

.page-faq .step-note {
  margin: 14px 0 0;
  padding: 18px 22px;
  border-radius: var(--radius-soft);
  border: 1px solid var(--line-cyan);
  background: linear-gradient(120deg, rgba(18, 224, 200, .1), rgba(245, 194, 67, .06));
  font-size: 15px;
  line-height: 1.85;
  color: var(--fog);
}

.page-faq .step-note a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .step-note a:hover {
  color: var(--gold);
}

/* ---------- 登录提示码卡片 ---------- */
.page-faq .err-list {
  display: grid;
  gap: 10px;
}

.page-faq .err-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-soft);
  background: var(--ink-800);
  min-width: 0;
  transition: border-color var(--t-fast) var(--ease);
}

.page-faq .err-card[open] {
  border-color: var(--line-cyan);
  box-shadow: 0 0 0 1px rgba(18, 224, 200, .14);
}

.page-faq .err-card__head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
}

.page-faq .err-card__head::-webkit-details-marker {
  display: none;
}

.page-faq .err-card__head:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
  border-radius: var(--radius-soft);
}

.page-faq .err-card__idx {
  flex: 0 0 auto;
  min-width: 26px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--gold);
}

.page-faq .err-card__title {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--fog);
}

.page-faq .err-card[open] .err-card__title {
  color: var(--pale);
}

.page-faq .err-card__chev {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--dust);
  border-bottom: 2px solid var(--dust);
  transform: rotate(45deg);
  transition: transform var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-faq .err-card[open] .err-card__chev {
  transform: rotate(225deg);
  border-color: var(--cyan);
}

.page-faq .err-card__body {
  padding: 0 20px 20px;
}

.page-faq .err-steps {
  margin: 0;
  padding: 16px 18px;
  list-style: none;
  counter-reset: errstep;
  border-radius: 14px;
  border: 1px solid rgba(18, 224, 200, .3);
  background: var(--ink-600);
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 2.05;
  color: var(--pale);
}

.page-faq .err-steps li {
  position: relative;
  padding-left: 32px;
  counter-increment: errstep;
}

.page-faq .err-steps li::before {
  content: counter(errstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  color: var(--cyan);
  opacity: .8;
}

/* ---------- 资料找回 ---------- */
.page-faq .archive-img {
  margin: 0 0 clamp(22px, 3vw, 32px);
  min-width: 0;
}

.page-faq .archive-img img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-card);
  border: 1px solid var(--line-cyan);
  object-fit: cover;
}

.page-faq .archive-path {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .archive-path li {
  position: relative;
  padding: 22px 22px 24px;
  border-radius: var(--radius-soft);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, var(--ink-800), rgba(7, 12, 31, .88));
  min-width: 0;
}

.page-faq .archive-path li::after {
  content: "";
  position: absolute;
  left: 22px;
  top: -4px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 14px rgba(18, 224, 200, .85);
}

.page-faq .archive-path__step {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--cyan);
  text-decoration: none;
}

.page-faq .archive-path__step:hover,
.page-faq .archive-path__step:focus-visible {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .archive-path__title {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-2);
  letter-spacing: -.01em;
  color: var(--pale);
}

.page-faq .archive-path__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--dust);
}

/* ---------- 反馈信息清单 ---------- */
.page-faq .faq-checklist {
  display: grid;
  gap: 22px;
}

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

.page-faq .check-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: 100%;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-soft);
  background: var(--ink-800);
  color: var(--dust);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  text-align: left;
  cursor: pointer;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-faq .check-item:hover {
  border-color: var(--line-cyan);
}

.page-faq .check-item:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .check-item[aria-pressed="true"] {
  color: var(--fog);
  border-color: rgba(18, 224, 200, .55);
  background: linear-gradient(120deg, rgba(18, 224, 200, .1), var(--ink-800));
}

.page-faq .check-item__box {
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 4px;
  border-radius: 6px;
  border: 1px solid var(--dust);
  transition: border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-faq .check-item[aria-pressed="true"] .check-item__box {
  border-color: var(--gold);
  background: var(--gold);
}

.page-faq .check-item[aria-pressed="true"] .check-item__box::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--ink-900);
  border-bottom: 2px solid var(--ink-900);
  transform: rotate(42deg);
}

.page-faq .check-item__text {
  min-width: 0;
}

.page-faq .faq-meter {
  display: grid;
  gap: 14px;
  justify-items: start;
  padding: 22px;
  border-radius: var(--radius-card);
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-faq .faq-meter__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--dust);
}

/* ---------- 人工通道 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: 10px;
}

.page-faq .contact-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  padding: 18px 22px;
  border-radius: var(--radius-soft);
  border: 1px solid var(--line);
  background: var(--ink-800);
  min-width: 0;
}

.page-faq .contact-line--plain {
  background: linear-gradient(120deg, var(--ink-700), var(--ink-800));
}

.page-faq .contact-line__label {
  flex: 0 0 auto;
  min-width: 76px;
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--dust);
}

.page-faq .contact-line__value {
  flex: 1 1 220px;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1.7;
  color: var(--pale);
  word-break: break-all;
}

.page-faq .faq-contact__more {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 26px 0 0;
}

.page-faq .faq-contact__tail {
  margin: 20px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--dust);
}

.page-faq .faq-contact__tail a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-contact__tail a:hover {
  color: var(--gold);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-checklist {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (min-width: 720px) {
  .page-faq .step-line {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }

  .page-faq .faq-contact__more {
    margin-top: 30px;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-fork {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    align-items: start;
  }

  .page-faq .fork-pill--lg {
    grid-column: 1 / 8;
  }

  .page-faq .fork-pill--md {
    grid-column: 8 / 13;
    margin-top: 52px;
  }

  .page-faq .fork-pill--sm {
    grid-column: 3 / 11;
    margin-top: 8px;
  }

  .page-faq .archive-path {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

  .page-faq .archive-path li + li::before {
    content: "";
    position: absolute;
    left: -24px;
    top: 46px;
    width: 24px;
    height: 1px;
    background: linear-gradient(90deg, var(--cyan), var(--gold));
    opacity: .8;
  }
}

@media (min-width: 820px) {
  .page-faq .faq-checklist {
    grid-template-columns: minmax(0, 1fr) 230px;
    gap: 32px;
    align-items: start;
  }
}

@media (min-width: 901px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
  }

  .page-faq .faq-rail-wrap {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    align-self: start;
  }

  .page-faq .faq-rail {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
    padding-left: 16px;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-rail__link {
    padding: 10px 0 10px 10px;
    border: 0;
    border-radius: 0;
    background: transparent;
    white-space: normal;
    line-height: 1.6;
  }

  .page-faq .faq-rail__link::before {
    content: "";
    position: absolute;
    left: -20px;
    top: 50%;
    width: 7px;
    height: 7px;
    margin-top: -3.5px;
    border-radius: 50%;
    background: var(--ink-700);
    border: 1px solid var(--line-soft);
    transition: background var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
  }

  .page-faq .faq-rail__link.is-active {
    background: transparent;
    color: var(--cyan);
    box-shadow: none;
  }

  .page-faq .faq-rail__link.is-active::before {
    background: var(--cyan);
    border-color: var(--cyan);
    box-shadow: 0 0 12px rgba(18, 224, 200, .9);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .fork-pill:hover,
  .page-faq .fork-pill:focus-visible {
    transform: none;
  }
}