.page-faq {
  --faq-stick: 104px;
  --faq-panel: rgba(13, 51, 42, 0.72);
  --faq-signal-line: rgba(71, 245, 165, 0.45);
  background:
    radial-gradient(120% 60% at 12% 0%, rgba(92, 201, 214, 0.09), transparent 62%),
    radial-gradient(90% 50% at 92% 18%, rgba(71, 245, 165, 0.07), transparent 60%);
  padding-bottom: clamp(40px, 7vw, 88px);
}

.page-faq .breadcrumb {
  padding-top: clamp(18px, 3vw, 30px);
}

/* ---------- 首屏 ---------- */
.page-faq__hero {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  padding: clamp(20px, 4vw, 36px) 0 clamp(28px, 5vw, 52px);
  align-items: start;
}

.page-faq__hero-copy {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-faq__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 6.2vw, 52px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper);
  text-wrap: balance;
}

.page-faq__lede {
  margin: 0;
  color: rgba(243, 247, 244, 0.78);
  max-width: 58ch;
}

.page-faq__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq__jump a {
  display: inline-block;
  padding: 6px 11px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--signal-soft);
  text-decoration: none;
  background: var(--ink-800);
  border: 1px solid var(--line);
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.page-faq__jump a:hover,
.page-faq__jump a:focus-visible {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--ink-900);
}

.page-faq__meta {
  margin: 0;
  color: var(--mute);
}

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

.page-faq__hero-media .frame__img img,
.page-faq__side-media .frame__img img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 主体两栏 ---------- */
.page-faq__body {
  display: grid;
  gap: clamp(22px, 3.4vw, 40px);
  align-items: start;
}

.page-faq__index {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 14px 0 12px;
}

.page-faq__index-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--track);
}

.page-faq__index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq__index-list li {
  flex: 0 0 auto;
}

.page-faq__index-list a {
  display: flex;
  align-items: baseline;
  gap: 7px;
  padding: 8px 12px;
  white-space: nowrap;
  font-size: 13px;
  color: rgba(243, 247, 244, 0.8);
  text-decoration: none;
  background: var(--ink-800);
  border: 1px solid var(--line);
}

.page-faq__index-list a:hover,
.page-faq__index-list a:focus-visible {
  border-color: var(--faq-signal-line);
  color: var(--signal-soft);
}

.page-faq__index-no {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--mute);
}

.page-faq__index-foot {
  margin: 12px 0 0;
  font-size: 13px;
  color: var(--mute);
}

.page-faq__index-foot a {
  color: var(--cool);
  text-decoration: none;
  border-bottom: 1px solid rgba(92, 201, 214, 0.45);
}

/* ---------- 章节 ---------- */
.page-faq__stream {
  display: grid;
  gap: clamp(30px, 5vw, 56px);
  min-width: 0;
}

.page-faq__section {
  scroll-margin-top: var(--faq-stick);
  min-width: 0;
}

.page-faq__section-head {
  display: grid;
  gap: 8px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 18px;
}

.page-faq__section-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3.6vw, 32px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq__section-note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--mute);
  max-width: 62ch;
}

.page-faq__section--support .page-faq__section-head {
  border-bottom-color: var(--faq-signal-line);
}

/* ---------- 问答 ---------- */
.page-faq__qa-list {
  display: grid;
  gap: 10px;
}

.page-faq__qa {
  position: relative;
  background: var(--faq-panel);
  border: 1px solid var(--line);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-faq__qa::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 14px;
  height: 14px;
  border-top: 2px solid var(--line);
  border-left: 2px solid var(--line);
  transition: border-color 0.2s ease;
  pointer-events: none;
}

.page-faq__qa:hover {
  border-color: rgba(71, 245, 165, 0.28);
}

.page-faq__qa[open] {
  border-color: var(--faq-signal-line);
  background: linear-gradient(180deg, rgba(71, 245, 165, 0.07), rgba(13, 51, 42, 0.9) 42%);
  box-shadow: inset 3px 0 0 var(--signal);
}

.page-faq__qa[open]::before {
  border-top-color: var(--signal);
  border-left-color: var(--signal);
}

.page-faq__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq__q::marker {
  content: "";
}

.page-faq__q:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: -2px;
}

.page-faq__q-no {
  flex: 0 0 auto;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mute);
}

.page-faq__q h3 {
  flex: 1 1 auto;
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(14.5px, 2.3vw, 16.5px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--paper);
}

.page-faq__qa[open] .page-faq__q h3 {
  color: var(--signal-soft);
}

.page-faq__sign {
  position: relative;
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
  margin-top: 3px;
}

.page-faq__sign::before,
.page-faq__sign::after {
  content: "";
  position: absolute;
  background: var(--track);
  transition: transform 0.2s ease, background 0.2s ease;
}

.page-faq__sign::before {
  top: 7px;
  left: 0;
  width: 16px;
  height: 2px;
}

.page-faq__sign::after {
  top: 0;
  left: 7px;
  width: 2px;
  height: 16px;
}

.page-faq__qa[open] .page-faq__sign::before,
.page-faq__qa[open] .page-faq__sign::after {
  background: var(--signal);
}

.page-faq__qa[open] .page-faq__sign::after {
  transform: scaleY(0);
}

.page-faq__a {
  padding: 0 16px 16px 40px;
  color: rgba(243, 247, 244, 0.76);
  font-size: 14.5px;
  line-height: 1.78;
}

.page-faq__a p {
  margin: 0 0 8px;
}

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

.page-faq__a a {
  color: var(--cool);
  text-decoration: none;
  border-bottom: 1px solid rgba(92, 201, 214, 0.5);
}

.page-faq__a a:hover,
.page-faq__a a:focus-visible {
  color: var(--signal-soft);
  border-bottom-color: var(--signal);
}

/* ---------- 快速开始分屏 ---------- */
.page-faq__split {
  display: grid;
  gap: 20px;
  align-items: start;
  min-width: 0;
}

.page-faq__side-media {
  margin: 0;
  max-width: 340px;
}

/* ---------- 表格 ---------- */
.page-faq__table-wrap {
  overflow-x: auto;
  margin-bottom: 18px;
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-faq__table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 13px;
}

.page-faq__table caption {
  caption-side: top;
  padding: 12px 14px 0;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mute);
}

.page-faq__table th,
.page-faq__table td {
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  line-height: 1.65;
}

.page-faq__table thead th {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--signal-soft);
  white-space: nowrap;
}

.page-faq__table tbody th {
  color: var(--paper);
}

.page-faq__table tbody td {
  color: rgba(243, 247, 244, 0.76);
}

.page-faq__table tbody tr:last-child td {
  border-bottom: none;
}

.page-faq__table tbody tr:nth-child(1) td:first-child {
  color: var(--signal);
  font-family: var(--font-mono);
  font-weight: 600;
}

.page-faq__table tbody tr:nth-child(2) td:first-child {
  color: var(--cool);
  font-family: var(--font-mono);
  font-weight: 600;
}

.page-faq__table tbody tr:nth-child(3) td:first-child {
  color: var(--track);
  font-family: var(--font-mono);
  font-weight: 600;
}

/* ---------- 客服区 ---------- */
.page-faq__support-grid {
  display: grid;
  gap: 18px;
  align-items: start;
}

.page-faq__steps {
  counter-reset: faqstep;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq__steps li {
  counter-increment: faqstep;
  position: relative;
  padding: 12px 14px 12px 46px;
  background: var(--ink-800);
  border: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.7;
  color: rgba(243, 247, 244, 0.78);
}

.page-faq__steps li::before {
  content: "0" counter(faqstep);
  position: absolute;
  top: 12px;
  left: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--track);
}

.page-faq__steps strong {
  color: var(--paper);
  font-weight: 600;
}

.page-faq__contact-card {
  padding: clamp(18px, 3vw, 26px);
}

.page-faq__contact-title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(17px, 2.6vw, 21px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--signal-soft);
}

.page-faq__contact-list {
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-faq__contact-row {
  display: grid;
  gap: 2px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--line);
}

.page-faq__contact-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.page-faq__contact-key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mute);
}

.page-faq__contact-val {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-faq__contact-btn {
  margin-top: 16px;
  display: inline-block;
}

.page-faq__tail {
  margin: 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mute);
}

.page-faq__tail a {
  color: var(--cool);
  text-decoration: none;
  border-bottom: 1px solid rgba(92, 201, 214, 0.5);
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-faq__section-head {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq__support-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 22px;
  }

  .page-faq__q {
    padding: 16px 20px;
  }

  .page-faq__a {
    padding: 0 20px 18px 48px;
  }
}

@media (min-width: 900px) {
  .page-faq__hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    padding-top: clamp(24px, 3vw, 40px);
  }

  .page-faq__split {
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 26px;
  }

  .page-faq__side-media {
    max-width: none;
  }
}

@media (min-width: 960px) {
  .page-faq__body {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: clamp(30px, 4vw, 56px);
  }

  .page-faq__index {
    position: sticky;
    top: var(--faq-stick);
    border-bottom: none;
    padding-bottom: 0;
  }

  .page-faq__index-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
  }

  .page-faq__index-list a {
    display: grid;
    grid-template-columns: 30px minmax(0, 1fr);
    gap: 8px;
    padding: 11px 4px 11px 0;
    white-space: normal;
    background: none;
    border: none;
    border-bottom: 1px solid var(--line);
    font-size: 13.5px;
    line-height: 1.5;
  }

  .page-faq__index-list a:hover,
  .page-faq__index-list a:focus-visible {
    color: var(--signal);
  }

  .page-faq__index-no {
    padding-top: 2px;
    color: var(--track);
  }
}

@media (min-width: 1180px) {
  .page-faq__hero {
    gap: 56px;
  }

  .page-faq__a {
    padding-left: 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition: none !important;
    animation: none !important;
  }
}