.page-faq {
  --faq-q: 200px;
  --cyan-ink: #0E8F86;
  display: block;
  background: var(--ink-900);
  color: var(--text);
}

.page-faq [id] {
  scroll-margin-top: calc(var(--rail-h) + 24px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  padding: clamp(26px, 5vw, 54px) 0 clamp(34px, 6vw, 66px);
  background:
    radial-gradient(125% 95% at 88% -10%, rgba(34, 211, 197, 0.17), transparent 58%),
    linear-gradient(180deg, var(--ink-850), var(--ink-900));
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(90deg, rgba(138, 160, 180, 0.06) 0 1px, transparent 1px 92px);
}

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

.page-faq .faq-hero .crumbs {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 14px;
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.16em;
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  max-width: 17ch;
  font-size: clamp(2rem, 7.2vw, 3.5rem);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: -0.025em;
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 64ch;
  color: var(--text-soft);
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.8;
}

.page-faq .faq-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-top: clamp(24px, 4vw, 40px);
  padding-top: 18px;
  border-top: 1px dashed var(--line);
}

.page-faq .faq-hero__jumplabel {
  margin-right: 4px;
}

.page-faq .faq-chip {
  display: inline-block;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-soft);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  transition: border-color 0.18s ease, color 0.18s ease, background-color 0.18s ease;
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(34, 211, 197, 0.08);
}

/* ---------- 章节骨架 ---------- */
.page-faq .faq-sec {
  padding: clamp(44px, 7vw, 88px) 0;
  border-bottom: 1px solid rgba(44, 67, 89, 0.5);
}

.page-faq .faq-sec--tight {
  padding-bottom: clamp(56px, 8vw, 104px);
  border-bottom: 0;
}

.page-faq .faq-sec__head {
  display: grid;
  gap: 10px;
  max-width: 62ch;
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-faq .faq-sec__num {
  margin: 0;
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.2em;
}

.page-faq .faq-sec__title {
  margin: 0;
  font-size: clamp(1.35rem, 4vw, 2.05rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.012em;
}

.page-faq .faq-sec__note {
  margin: 0;
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.75;
}

/* ---------- 三步路径 ---------- */
.page-faq .steps {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.page-faq .step {
  position: relative;
  padding: 20px 18px 22px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--cyan);
  border-radius: var(--r);
  background: var(--ink-800);
  box-shadow: var(--shadow-1);
}

.page-faq .step__num {
  display: block;
  color: var(--cyan);
  font-size: 11px;
  letter-spacing: 0.18em;
}

.page-faq .step__title {
  margin: 10px 0 8px;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.35;
}

.page-faq .step__text {
  margin: 0;
  color: var(--text-dim);
  font-size: 14.5px;
  line-height: 1.72;
}

/* ---------- 图片容器 ---------- */
.page-faq .faq-figure {
  margin: clamp(22px, 4vw, 36px) 0 0;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  background: var(--ink-800);
}

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

.page-faq .faq-figure .media__cap {
  padding: 10px 14px 12px;
  color: var(--text-dim);
  font-size: 12.5px;
  border-top: 1px solid var(--line);
}

/* ---------- 筛选条与示例 ---------- */
.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 18px;
}

.page-faq .filter__btn {
  appearance: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--text-soft);
  font: inherit;
  font-size: 13px;
  padding: 7px 14px;
  cursor: pointer;
  transition: border-color 0.18s ease, color 0.18s ease, background-color 0.18s ease;
}

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

.page-faq .filter__btn[aria-pressed="true"],
.page-faq .filter__btn.is-active {
  border-color: var(--cyan);
  background: rgba(34, 211, 197, 0.12);
  color: var(--cyan);
}

.page-faq .filter__status {
  margin-left: auto;
}

.page-faq .ex-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .ex {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--ink-850);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

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

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

.page-faq .ex__k {
  margin: 0 0 8px;
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-faq .ex__text {
  margin: 0;
  color: var(--text-dim);
  font-size: 14.5px;
  line-height: 1.72;
}

/* ---------- 问答 ---------- */
.page-faq .faq-qa-gap {
  margin-top: clamp(24px, 4vw, 38px);
}

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

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

.page-faq .qa__sum {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__idx {
  flex: none;
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.page-faq .qa__q {
  font-size: 1rem;
  font-weight: 650;
  line-height: 1.5;
  color: var(--text);
}

.page-faq .qa__sum::after {
  content: "＋";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--cyan);
}

.page-faq .qa[open] .qa__sum::after {
  content: "－";
}

.page-faq .qa[open] .qa__sum {
  border-bottom: 1px dashed transparent;
}

.page-faq .qa:hover .qa__sum::after {
  color: var(--cyan-soft);
}

.page-faq .qa__body {
  padding: 0 0 20px;
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.78;
}

.page-faq .qa__body p {
  margin: 0;
  max-width: 68ch;
}

.page-faq .qa__body p + p {
  margin-top: 10px;
}

/* ---------- 纸白章节 ---------- */
.page-faq .faq-sec--paper {
  background: var(--paper);
  color: var(--ink-900);
  border-bottom-color: var(--paper-dim);
}

.page-faq .faq-sec--paper .faq-sec__title {
  color: var(--ink-900);
}

.page-faq .faq-sec--paper .faq-sec__note {
  color: #5A6E82;
}

.page-faq .faq-sec--paper .faq-sec__num {
  color: var(--cyan-ink);
}

.page-faq .qa-list--paper {
  border-top-color: var(--paper-dim);
}

.page-faq .qa-list--paper .qa {
  border-bottom-color: var(--paper-dim);
}

.page-faq .qa-list--paper .qa__q {
  color: var(--ink-900);
}

.page-faq .qa-list--paper .qa__idx,
.page-faq .qa-list--paper .qa__sum::after {
  color: var(--cyan-ink);
}

.page-faq .qa-list--paper .qa__body {
  color: #33465B;
}

/* ---------- 导出格式 ---------- */
.page-faq .exp-list {
  display: grid;
  gap: 14px;
  margin: 0 0 clamp(22px, 3.5vw, 34px);
  padding: 0;
  list-style: none;
}

.page-faq .exp {
  padding: 20px 18px 22px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  border-radius: var(--r);
  background: var(--ink-800);
  color: var(--text);
}

.page-faq .exp__name {
  margin: 0 0 6px;
  color: var(--cyan);
  font-size: 15px;
  letter-spacing: 0.1em;
}

.page-faq .exp__title {
  margin: 0 0 8px;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.35;
}

.page-faq .exp__text {
  margin: 0;
  color: var(--text-dim);
  font-size: 14.5px;
  line-height: 1.72;
}

/* ---------- 页尾记录字段 ---------- */
.page-faq .faq-sec--record {
  padding-bottom: clamp(48px, 7vw, 92px);
}

.page-faq .rec {
  margin: 0 0 clamp(20px, 3.5vw, 32px);
  border-top: 1px solid var(--paper-dim);
}

.page-faq .rec__row {
  display: grid;
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px solid var(--paper-dim);
}

.page-faq .rec__k {
  margin: 0;
  color: var(--cyan-ink);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.page-faq .rec__v {
  margin: 0;
  color: #33465B;
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .rec__hint {
  margin: 18px 0 0;
  color: #7A8CA0;
}

.page-faq .faq-figure--paper {
  border-color: var(--paper-dim);
  background: var(--paper-dim);
  box-shadow: var(--shadow-paper);
}

.page-faq .faq-figure--paper .media__cap {
  border-top-color: var(--paper-dim);
  color: #5A6E82;
  background: var(--paper);
}

/* ---------- 反馈 ---------- */
.page-faq .faq-feedback {
  border-top: 2px solid var(--coral);
  border-bottom: 1px solid rgba(44, 67, 89, 0.5);
  background: linear-gradient(180deg, var(--ink-800), var(--ink-850));
}

.page-faq .fb-grid {
  display: grid;
  gap: 16px;
}

.page-faq .fb-panel {
  padding: 22px 20px 24px;
  background: rgba(11, 31, 51, 0.55);
}

.page-faq .fb-panel--coral {
  border-left: 3px solid var(--coral);
}

.page-faq .fb-panel__k {
  margin: 0 0 12px;
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.14em;
}

.page-faq .fb-panel--coral .fb-panel__k {
  color: var(--coral);
}

.page-faq .fb-panel__text {
  margin: 0 0 14px;
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.78;
  max-width: 62ch;
}

.page-faq .fb-fields {
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-faq .fb-fields .field {
  display: grid;
  gap: 2px;
}

.page-faq .fb-fields .field__k {
  color: var(--mist);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-faq .fb-fields .field__v {
  margin: 0;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 14px;
  word-break: break-word;
}

.page-faq .fb-panel__note {
  margin: 14px 0 0;
}

.page-faq .fb-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

/* ---------- 继续逛 ---------- */
.page-faq .more-grid {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .more-card {
  display: block;
  height: 100%;
  padding: 20px 18px 22px;
  text-decoration: none;
}

.page-faq .more-card .card__meta {
  color: var(--cyan);
  font-size: 11px;
  letter-spacing: 0.14em;
  margin: 0 0 10px;
}

.page-faq .more-card .card__title {
  margin: 0 0 8px;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
}

.page-faq .more-card .card__body {
  margin: 0;
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.7;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .ex-list {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

  .page-faq .exp-list {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .page-faq .rec__row {
    grid-template-columns: 190px 1fr;
    gap: 26px;
    align-items: baseline;
    padding: 18px 0;
  }

  .page-faq .fb-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 18px;
  }

  .page-faq .more-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 760px) {
  .page-faq .steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
  }
}

@media (min-width: 860px) {
  .page-faq {
    --faq-q: 232px;
  }

  .page-faq .qa__q {
    font-size: 1.05rem;
  }

  .page-faq .qa__body {
    margin-left: calc(var(--faq-q) - 30px);
    padding-left: 30px;
    border-left: 1px solid var(--line);
  }

  .page-faq .qa-list--paper .qa__body {
    border-left-color: var(--paper-dim);
  }
}

@media (min-width: 1060px) {
  .page-faq .more-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-faq .faq-hero__title {
    max-width: 19ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .ex,
  .page-faq .faq-chip,
  .page-faq .filter__btn {
    transition: none;
  }

  .page-faq .ex:hover {
    transform: none;
  }
}