.page-faq {
  position: relative;
  background: var(--ink);
  color: var(--fog);
  padding-bottom: clamp(56px, 8vw, 104px);
  overflow-x: hidden;
}

.page-faq img {
  max-width: 100%;
  height: auto;
}

.page-faq [id] {
  scroll-margin-top: 96px;
}

.page-faq .breadcrumb {
  padding-block: clamp(16px, 2.5vw, 26px);
}

.page-faq .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--muted);
}

.page-faq .breadcrumb-list > li + li::before {
  content: "/";
  margin-inline-end: 8px;
  color: var(--amber-dim);
}

.page-faq .breadcrumb-link {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .breadcrumb-link:hover,
.page-faq .breadcrumb-link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
  outline: none;
}

.page-faq .breadcrumb-current {
  color: var(--fog);
}

/* 首屏 */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(24px, 3vw, 36px);
  align-items: end;
  padding-block: clamp(8px, 2vw, 18px) clamp(40px, 6vw, 72px);
}

.page-faq .page-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .page-kicker::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--amber);
}

.page-faq .page-title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5.2vw, 56px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--fog);
}

.page-faq .page-lede {
  margin: 0 0 24px;
  max-width: 46ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.9;
  color: var(--muted);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__meta li {
  padding: 6px 10px;
  border: 1px solid var(--line);
  background: rgba(14, 74, 68, 0.35);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--fog);
}

.page-faq .faq-hero__media {
  position: relative;
  margin: 0;
  border: 3px solid var(--line);
  background: var(--char);
  box-shadow: 14px 14px 0 rgba(6, 15, 13, 0.85);
  overflow: hidden;
}

.page-faq .faq-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(158deg, rgba(14, 74, 68, 0.55) 0%, rgba(11, 31, 26, 0.12) 52%, rgba(11, 31, 26, 0.82) 100%);
  pointer-events: none;
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.06);
}

/* 章节骨架 */
.page-faq .faq-block {
  padding-block: clamp(44px, 6vw, 76px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-start {
  border-top: 0;
  padding-top: clamp(8px, 2vw, 16px);
}

.page-faq .faq-block__head {
  max-width: 68ch;
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-faq .faq-block__label {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--amber);
}

.page-faq .faq-block__label .mono {
  padding: 2px 8px;
  border: 1px solid var(--amber-dim);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-faq .section-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.2vw, 34px);
  line-height: 1.26;
  letter-spacing: -0.01em;
  color: var(--fog);
}

.page-faq .section-note {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted);
}

/* 三步进入 */
.page-faq .faq-start__grid {
  display: grid;
  gap: 26px;
}

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

.page-faq .faq-step {
  position: relative;
  padding: 18px 20px 18px 66px;
  border: 2px solid var(--line);
  background: var(--char);
  transition: border-color 0.25s ease, background-color 0.25s ease;
}

.page-faq .faq-step:hover,
.page-faq .faq-step:focus-within {
  border-color: var(--amber-dim);
  background: #0d1d19;
}

.page-faq .faq-step:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 34px;
  top: calc(100% + 2px);
  width: 2px;
  height: 12px;
  background: var(--amber-dim);
}

.page-faq .faq-step__num {
  position: absolute;
  left: 18px;
  top: 18px;
  padding: 2px 6px;
  background: var(--amber);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  line-height: 1.4;
}

.page-faq .faq-step__title {
  margin: 0 0 6px;
  font-size: clamp(16px, 1.7vw, 19px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--fog);
}

.page-faq .faq-step__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--muted);
}

.page-faq .faq-start__media {
  margin: 0;
  padding: 10px;
  border: 3px solid var(--line);
  background: var(--char);
}

.page-faq .faq-start__media img {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.page-faq .faq-start__media .media-caption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* 问答区 */
.page-faq .faq-body__grid {
  display: grid;
  gap: 28px;
}

.page-faq .faq-index__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-index__list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-height: 44px;
  padding: 10px 12px;
  border: 2px solid var(--line);
  background: rgba(16, 21, 20, 0.7);
  color: var(--fog);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-index__link .mono {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--amber);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: var(--cyan);
  background: rgba(14, 74, 68, 0.45);
  color: var(--cyan);
  outline: none;
}

.page-faq .faq-group {
  padding-block: clamp(34px, 4.5vw, 56px);
}

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

.page-faq .faq-item {
  margin: 0 0 12px;
  border: 2px solid var(--line);
  background: var(--char);
  transition: border-color 0.22s ease, background-color 0.22s ease;
}

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

.page-faq .faq-item[open] {
  border-color: var(--amber-dim);
  background: #0d1d19;
}

.page-faq .faq-item__q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 18px;
  font-size: clamp(15px, 1.6vw, 17px);
  font-weight: 700;
  line-height: 1.6;
  color: var(--fog);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__q::marker {
  content: "";
}

.page-faq .faq-item__q::after {
  content: "+";
  flex: 0 0 auto;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "−";
  color: var(--amber);
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -4px;
}

.page-faq .faq-item__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-faq .faq-item__a {
  padding: 14px 18px 18px;
  border-top: 1px dashed var(--line);
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

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

/* 人工支持 */
.page-faq .faq-support__grid {
  display: grid;
  gap: 16px;
  margin-bottom: 28px;
}

.page-faq .faq-support__card {
  padding: clamp(20px, 2.5vw, 28px);
  border: 2px solid var(--line);
  background: linear-gradient(150deg, rgba(14, 74, 68, 0.55) 0%, rgba(16, 21, 20, 0.92) 78%);
}

.page-faq .faq-support__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-support__value {
  margin: 10px 0 10px;
  font-family: var(--font-mono);
  font-size: clamp(17px, 2.2vw, 22px);
  line-height: 1.4;
  word-break: break-all;
  color: var(--amber);
}

.page-faq .faq-support__note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* 断点 */
@media (min-width: 760px) {
  .page-faq .faq-support__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-start__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 40px;
    align-items: start;
  }
}

@media (min-width: 940px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 48px;
  }

  .page-faq .faq-hero__body {
    padding-bottom: 8px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-body__grid {
    grid-template-columns: minmax(170px, 210px) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 56px);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 96px;
  }
}

@media (max-width: 899px) {
  .page-faq .faq-index__list {
    grid-auto-flow: column;
    grid-auto-columns: max-content;
    overflow-x: auto;
    padding-bottom: 6px;
    scrollbar-width: thin;
  }

  .page-faq .faq-index__link {
    white-space: nowrap;
  }
}

@media (max-width: 560px) {
  .page-faq .faq-step {
    padding: 16px 16px 16px 58px;
  }

  .page-faq .faq-step__num {
    left: 14px;
    top: 16px;
  }

  .page-faq .faq-step:not(:last-child)::after {
    left: 28px;
  }

  .page-faq .faq-hero__media {
    box-shadow: 8px 8px 0 rgba(6, 15, 13, 0.85);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-step,
  .page-faq .faq-item,
  .page-faq .faq-index__link,
  .page-faq .breadcrumb-link {
    transition: none;
  }
}