.page-faq {
  --faq-gap: clamp(20px, 3vw, 36px);
  --faq-ink-soft: rgba(7, 26, 23, 0.55);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  color: var(--white);
  background:
    radial-gradient(120% 80% at 88% 2%, rgba(61, 242, 196, 0.16), transparent 58%),
    radial-gradient(100% 90% at 4% 100%, rgba(140, 91, 255, 0.18), transparent 62%),
    var(--ink-2);
  border-bottom: 1px solid var(--line);
  padding-bottom: clamp(44px, 6vw, 92px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 74px 74px;
  opacity: 0.6;
  pointer-events: none;
}

.page-faq .faq-hero__glyph {
  position: absolute;
  top: -0.16em;
  right: -0.04em;
  font-family: var(--font-sans);
  font-weight: 200;
  font-size: clamp(190px, 34vw, 440px);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(61, 242, 196, 0.26);
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.page-faq .faq-hero .wrap {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .breadcrumb {
  margin: 0 0 clamp(24px, 3vw, 40px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-hero .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

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

.page-faq .faq-hero .index-label {
  color: var(--cyan);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 18px;
  max-width: 15ch;
}

.page-faq .faq-hero .lede {
  margin: 0;
  max-width: 56ch;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-faq .faq-jump a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  background: rgba(7, 26, 23, 0.5);
  color: var(--white);
  font-size: 13px;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-jump a::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  background: var(--cyan);
}

.page-faq .faq-jump a:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translateY(-2px);
}

.page-faq .faq-hero__media {
  margin: 0;
  width: 100%;
  max-width: 520px;
  justify-self: end;
  border: 1px solid var(--line);
  background: rgba(7, 26, 23, 0.45);
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 通用标题 ---------- */
.page-faq .index-label {
  color: var(--graphite);
}

.page-faq .section--ink .index-label,
.page-faq .section--ink2 .index-label {
  color: var(--mist);
}

.page-faq .faq-h2 {
  margin: 12px 0 0;
  font-size: clamp(24px, 3.4vw, 38px);
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 1.28;
  color: var(--ink);
}

.page-faq .section--ink .faq-h2,
.page-faq .section--ink2 .faq-h2 {
  color: var(--white);
}

/* ---------- 快速索引 ---------- */
.page-faq .faq-index {
  display: grid;
  gap: 1px;
  margin-top: var(--faq-gap);
  background: var(--line-paper);
  border: 1px solid var(--line-paper);
}

.page-faq .faq-index__item {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 2.6vw, 30px);
  background: var(--paper);
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-index__item:hover {
  background: rgba(222, 208, 182, 0.38);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-faq .faq-index__title {
  margin: 0;
  font-size: 19px;
  font-weight: 600;
  color: var(--ink);
}

.page-faq .faq-index__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--graphite);
}

.page-faq .faq-index__links {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--line-paper);
}

.page-faq .faq-index__links a {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-size: 13px;
  color: var(--graphite);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-index__links a::after {
  content: "→";
  color: var(--orange);
  flex: 0 0 auto;
}

.page-faq .faq-index__links a:hover {
  color: var(--ink);
  border-bottom-color: var(--orange);
}

/* ---------- 场景标签页 ---------- */
.page-faq .faq-tabs {
  margin-top: var(--faq-gap);
}

.page-faq .tab-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.page-faq .tab {
  appearance: none;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--mist);
  font-family: var(--font-sans);
  font-size: 14px;
  padding: 10px 16px;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .tab:hover {
  border-color: var(--cyan);
  color: var(--white);
}

.page-faq .tab[aria-selected="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
  font-weight: 700;
}

.page-faq .tab[aria-selected="true"]:hover {
  color: var(--ink);
}

.page-faq .tab-panel {
  padding-top: clamp(20px, 3vw, 32px);
  color: var(--white);
}

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

.page-faq .faq-steps {
  list-style: none;
  counter-reset: step;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  max-width: 70ch;
}

.page-faq .faq-steps li {
  counter-increment: step;
  position: relative;
  padding-left: 48px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  border: 1px solid var(--line);
  padding: 2px 6px;
}

.page-faq .faq-panel-link {
  display: inline-block;
  margin-top: 22px;
  font-size: 13.5px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 242, 196, 0.5);
  padding-bottom: 3px;
}

.page-faq .faq-panel-link:hover {
  color: var(--white);
  border-bottom-color: var(--white);
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  margin-top: var(--faq-gap);
}

.page-faq .faq-toc {
  align-self: start;
}

.page-faq .faq-toc ul {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
}

.page-faq .faq-toc a {
  display: block;
  padding: 8px 0;
  font-size: 13.5px;
  color: var(--graphite);
  text-decoration: none;
  border-bottom: 1px solid var(--line-paper);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-toc a span {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--orange);
  margin-right: 8px;
}

.page-faq .faq-toc a:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.page-faq .faq-group {
  margin-bottom: clamp(32px, 5vw, 56px);
}

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

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-top: 16px;
  border-top: 2px solid var(--ink);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-faq .faq-group h3 {
  margin: 0;
  font-size: clamp(21px, 2.6vw, 28px);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-group__intro {
  margin: 12px 0 20px;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--graphite);
}

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

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

.page-faq .accordion__summary {
  list-style: none;
  cursor: pointer;
  position: relative;
  padding: 18px 46px 18px 0;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.65;
  color: var(--ink);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .accordion__summary::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--orange);
}

.page-faq .accordion__item[open] .accordion__summary::after {
  content: "–";
  color: var(--ink);
}

.page-faq .accordion__summary:hover {
  text-decoration: underline;
  text-decoration-color: var(--orange);
  text-underline-offset: 4px;
}

.page-faq .accordion__body {
  padding: 0 0 20px;
  max-width: 70ch;
}

.page-faq .accordion__body p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--graphite);
}

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

.page-faq .accordion__body a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--orange);
}

.page-faq .accordion__body a:hover {
  color: var(--orange);
}

.page-faq .faq-table-wrap {
  margin: 0 0 22px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-compare {
  width: 100%;
  min-width: 480px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-faq .faq-compare caption {
  text-align: left;
  padding-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--graphite);
}

.page-faq .faq-compare th,
.page-faq .faq-compare td {
  text-align: left;
  padding: 11px 12px;
  border-bottom: 1px solid var(--line-paper);
  vertical-align: top;
  line-height: 1.7;
}

.page-faq .faq-compare thead th {
  background: var(--sand);
  color: var(--ink);
  font-weight: 600;
  font-size: 13px;
}

.page-faq .faq-compare tbody th {
  width: 32%;
  font-weight: 500;
  color: var(--ink);
}

.page-faq .faq-compare tbody td {
  color: var(--graphite);
}

.page-faq .faq-compare tbody tr:nth-child(even) {
  background: rgba(222, 208, 182, 0.32);
}

/* ---------- 联系客服 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}

.page-faq .faq-contact__list {
  list-style: none;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .contact-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 14px;
  padding: 15px 18px;
  background: var(--ink-2);
}

.page-faq .contact-label {
  flex: 0 0 auto;
  min-width: 76px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-faq .contact-value {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 15px;
  color: var(--white);
  word-break: break-word;
}

.page-faq .copy-btn {
  appearance: none;
  flex: 0 0 auto;
  padding: 6px 12px;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--cyan);
  font-family: var(--font-sans);
  font-size: 12px;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .copy-btn:hover,
.page-faq .copy-btn.is-copied {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

.page-faq .faq-contact__note {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.page-faq .btn--ghost {
  border: 1px solid var(--line);
  color: var(--white);
  background: transparent;
}

.page-faq .btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-faq .faq-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 28px;
  padding-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

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

.page-faq .faq-contact__media {
  margin: 0;
  width: 100%;
  border: 1px solid var(--line);
  background: rgba(7, 26, 23, 0.5);
}

.page-faq .faq-contact__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 920px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: end;
  }

  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: 210px minmax(0, 1fr);
  }

  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-faq .faq-toc ul {
    display: block;
  }
}

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

@media (max-width: 560px) {
  .page-faq .faq-hero__glyph {
    font-size: 170px;
    top: -0.1em;
    right: -0.12em;
  }

  .page-faq .faq-jump a {
    font-size: 12.5px;
    padding: 8px 12px;
  }

  .page-faq .contact-label {
    min-width: 100%;
  }

  .page-faq .faq-steps li {
    padding-left: 42px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump a,
  .page-faq .faq-index__item,
  .page-faq .tab,
  .page-faq .copy-btn {
    transition: none;
  }
}