/* ===================================================
   问题排查页 · page-faq
   =================================================== */

.page-faq {
  background: var(--ink-800);
  color: var(--paper);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 104px 0 44px;
  background:
    radial-gradient(88% 68% at 6% 0%, rgba(59, 240, 196, 0.13), transparent 58%),
    radial-gradient(62% 56% at 100% 100%, rgba(201, 162, 39, 0.08), transparent 68%),
    linear-gradient(180deg, var(--ink-900) 0%, var(--ink-800) 100%);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-hero::after {
  content: "05";
  position: absolute;
  right: -10px;
  bottom: -40px;
  font-family: var(--font-display);
  font-size: clamp(140px, 26vw, 280px);
  font-weight: 300;
  line-height: 0.86;
  letter-spacing: -0.05em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(143, 169, 161, 0.14);
  pointer-events: none;
  user-select: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 36px;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(32px, 6.4vw, 62px);
  line-height: 1.08;
  letter-spacing: 0.012em;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
}

/* 首屏指标格 */

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  align-self: end;
}

.page-faq .faq-stat {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 3px 5px;
  padding: 16px 14px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(13, 42, 35, 0.45);
}

.page-faq .faq-stat__num {
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 400;
  line-height: 1;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-stat__unit {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gold-lt);
}

.page-faq .faq-stat__label {
  flex: 1 0 100%;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 问题台 ---------- */

.page-faq .faq-console {
  padding-top: 56px;
  padding-bottom: 56px;
}

.page-faq .faq-console__head {
  max-width: 68ch;
  margin-bottom: 28px;
}

.page-faq .faq-console__head h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.22;
  letter-spacing: 0.012em;
  color: var(--paper);
}

.page-faq .faq-console__sub {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-console__foot {
  margin: 32px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-console__foot a {
  color: var(--gold-lt);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 212, 138, 0.4);
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .faq-console__foot a:hover {
  color: var(--cyan);
  border-bottom-color: var(--line-cyan);
}

/* ---------- 分段标签 ---------- */

.page-faq .faq-tabs .tabs__list {
  display: grid;
  grid-template-columns: 1fr;
  border: 1px solid var(--line);
  margin-bottom: 4px;
}

.page-faq .tabs__tab {
  appearance: none;
  width: 100%;
  padding: 14px 18px;
  background: var(--ink-700);
  border: 0;
  border-bottom: 1px solid var(--line);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  line-height: 1.4;
  text-align: left;
  cursor: pointer;
  transition: background 180ms var(--ease), color 180ms var(--ease);
}

.page-faq .tabs__tab:last-child {
  border-bottom: 0;
}

.page-faq .tabs__tab:hover {
  color: var(--gold-lt);
  background: #0A211C;
}

.page-faq .tabs__tab[aria-selected="true"],
.page-faq .tabs__tab.is-active {
  background: var(--cyan);
  color: var(--ink-900);
  border-bottom-color: var(--cyan);
}

.page-faq .tabs__panel {
  padding-top: 24px;
}

.page-faq .tabs__panel[hidden] {
  display: none;
}

/* ---------- 折叠问题列表 ---------- */

.page-faq .faq-list {
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-item__head {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-faq .accordion__trigger {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  width: 100%;
  padding: 18px 0;
  background: none;
  border: 0;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.page-faq .faq-q__idx {
  flex: none;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  background: rgba(201, 162, 39, 0.16);
  border: 1px solid rgba(201, 162, 39, 0.42);
  color: var(--gold-lt);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  transition: background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .faq-q__text {
  flex: 1 1 auto;
  padding-top: 3px;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--paper);
  transition: color 180ms var(--ease);
}

.page-faq .faq-q__icon {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  margin-top: 11px;
}

.page-faq .faq-q__icon::before,
.page-faq .faq-q__icon::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 14px;
  height: 1px;
  background: var(--mist);
  transition: transform 200ms var(--ease), background 200ms var(--ease);
}

.page-faq .faq-q__icon::after {
  transform: rotate(90deg);
}

.page-faq .accordion__trigger:hover .faq-q__text {
  color: var(--gold-lt);
}

.page-faq .accordion__trigger:hover .faq-q__icon::before,
.page-faq .accordion__trigger:hover .faq-q__icon::after {
  background: var(--gold-lt);
}

.page-faq .accordion__trigger[aria-expanded="true"] .faq-q__idx {
  background: rgba(59, 240, 196, 0.16);
  border-color: var(--line-cyan);
  color: var(--cyan);
}

.page-faq .accordion__trigger[aria-expanded="true"] .faq-q__icon::after {
  transform: rotate(0deg);
}

.page-faq .accordion__trigger[aria-expanded="true"] .faq-q__icon::before {
  background: var(--cyan);
}

.page-faq .accordion__trigger:focus-visible,
.page-faq .tabs__tab:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* 答案面板 */

.page-faq .faq-a {
  padding: 0 0 22px 46px;
}

.page-faq .faq-a[hidden] {
  display: none;
}

.page-faq .faq-a__inner {
  position: relative;
  padding-left: 18px;
  border-left: 1px solid var(--line-soft);
  transition: border-color 200ms var(--ease);
}

.page-faq .faq-item:has(.accordion__trigger[aria-expanded="true"]) .faq-a__inner {
  border-left-color: var(--cyan);
}

.page-faq .faq-a__inner p {
  margin: 0 0 12px;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-a__inner p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-a__inner a {
  color: var(--gold-lt);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 212, 138, 0.4);
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .faq-a__inner a:hover {
  color: var(--cyan);
  border-bottom-color: var(--line-cyan);
}

/* 步骤列表 */

.page-faq .faq-steps {
  margin: 4px 0 14px;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
  max-width: 66ch;
}

.page-faq .faq-steps li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 11px;
  counter-increment: faqstep;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-steps li:last-child {
  margin-bottom: 0;
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 5px;
  width: 18px;
  height: 18px;
  display: grid;
  place-items: center;
  background: rgba(201, 162, 39, 0.2);
  border: 1px solid rgba(201, 162, 39, 0.48);
  color: var(--gold-lt);
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

/* ---------- 章节配图 ---------- */

.page-faq .faq-figure {
  margin: 6px 0 22px 46px;
}

.page-faq .faq-figure .figure__media {
  border: 1px solid var(--line);
  background: var(--ink-900);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .faq-figure .figure__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 联系区 ---------- */

.page-faq .faq-help {
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, var(--ink-800) 0%, var(--ink-900) 100%);
}

.page-faq .faq-help__grid {
  display: grid;
  gap: 32px;
}

.page-faq .faq-help__main h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.22;
  letter-spacing: 0.012em;
  color: var(--paper);
}

.page-faq .faq-help__lead {
  margin: 16px 0 24px;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-steps--roomy li {
  margin-bottom: 14px;
}

.page-faq .faq-help__tail {
  margin: 24px 0 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-help__tail a {
  color: var(--gold-lt);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 212, 138, 0.4);
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .faq-help__tail a:hover {
  color: var(--cyan);
  border-bottom-color: var(--line-cyan);
}

/* 联系信息窄条 */

.page-faq .faq-help__panel {
  background: var(--ink-700);
  border: 1px solid var(--line);
  border-top: 2px solid var(--coral);
  padding: 22px 20px 24px;
  align-self: start;
}

.page-faq .faq-help__status {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-faq .faq-help__dot {
  flex: none;
  width: 8px;
  height: 8px;
  background: var(--coral);
  box-shadow: 0 0 0 3px rgba(255, 106, 85, 0.16);
}

.page-faq .faq-help__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-help__list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-help__list li:first-child {
  padding-top: 0;
}

.page-faq .faq-help__key {
  display: block;
  margin-bottom: 5px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--jade);
}

.page-faq .faq-help__val {
  display: block;
  font-size: 15px;
  line-height: 1.65;
  color: var(--paper);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-faq .faq-help__note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 响应式 ---------- */

@media (min-width: 600px) {
  .page-faq .faq-hero {
    padding: 120px 0 56px;
  }

  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-stat {
    padding: 18px 16px;
  }

  .page-faq .tabs__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .tabs__tab {
    border-bottom: 0;
    border-right: 1px solid var(--line);
    text-align: center;
  }

  .page-faq .tabs__tab:last-child {
    border-right: 0;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 136px 0 68px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 56px;
    align-items: end;
  }

  .page-faq .faq-console {
    padding-top: 76px;
    padding-bottom: 76px;
  }

  .page-faq .faq-console__head {
    margin-bottom: 34px;
  }

  .page-faq .faq-tabs .tabs__list {
    margin-bottom: 0;
  }

  .page-faq .tabs__panel {
    padding-top: 30px;
  }

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

  .page-faq .faq-q__text {
    font-size: 16.5px;
  }

  .page-faq .faq-a {
    padding-left: 60px;
    padding-bottom: 26px;
  }

  .page-faq .faq-a__inner {
    padding-left: 22px;
  }

  .page-faq .faq-figure {
    margin-left: 60px;
    margin-bottom: 26px;
  }

  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 56px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-hero h1 {
    max-width: 18ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-q__idx,
  .page-faq .faq-q__text,
  .page-faq .faq-q__icon::before,
  .page-faq .faq-q__icon::after,
  .page-faq .faq-a__inner,
  .page-faq .tabs__tab,
  .page-faq .faq-console__foot a,
  .page-faq .faq-a__inner a,
  .page-faq .faq-help__tail a {
    transition: none !important;
  }
}