.page-faq {
  --faq-cut: 14px;
  --faq-rail-w: 236px;
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq .eyebrow {
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-block: clamp(20px, 4vw, 48px) clamp(32px, 6vw, 64px);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -20% -10% auto auto;
  width: min(620px, 90%);
  height: 520px;
  background:
    radial-gradient(circle at 70% 30%, rgba(53, 224, 208, 0.16), transparent 62%),
    linear-gradient(200deg, rgba(232, 163, 61, 0.08), transparent 55%);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(26px, 5vw, 56px);
  align-items: center;
}

.page-faq .faq-hero__main h1 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.08;
  font-size: clamp(30px, 6.2vw, 58px);
  margin: 14px 0 18px;
  max-width: 15em;
}

.page-faq .faq-hero__main .lead {
  max-width: 46ch;
  color: var(--muted);
  line-height: 1.9;
}

.page-faq .faq-quick {
  display: grid;
  gap: 10px;
  margin-top: 26px;
  max-width: 460px;
}

.page-faq .faq-quick__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--text);
  text-decoration: none;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-quick__item:hover,
.page-faq .faq-quick__item:focus-visible {
  border-color: var(--cyan-dim);
  background: var(--panel-2);
  transform: translateY(-2px);
}

.page-faq .faq-quick__num {
  color: var(--cyan);
  font-size: 13px;
  letter-spacing: 0.06em;
}

.page-faq .faq-quick__label {
  font-size: 15px;
  font-weight: 500;
}

.page-faq .faq-quick__go {
  color: var(--cyan);
  font-size: 15px;
}

.page-faq .faq-hero__visual {
  position: relative;
  min-height: 240px;
}

.page-faq .faq-glyph {
  position: absolute;
  top: -18px;
  right: 4%;
  z-index: 2;
  font-size: clamp(110px, 22vw, 190px);
  font-weight: 700;
  line-height: 0.78;
  color: transparent;
  background: linear-gradient(155deg, var(--cyan) 10%, var(--cyan-dim) 58%, rgba(27, 127, 120, 0) 92%);
  -webkit-background-clip: text;
  background-clip: text;
  pointer-events: none;
}

.page-faq .faq-hero__svg {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  max-width: 440px;
  height: auto;
  margin-left: auto;
  filter: drop-shadow(0 24px 48px rgba(0, 0, 0, 0.5));
}

/* ---------- 高频分段 ---------- */
.page-faq .faq-switch {
  padding-block: clamp(28px, 5vw, 48px);
}

.page-faq .faq-switch__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 20px;
  margin-bottom: 20px;
}

.page-faq .faq-switch__head .note {
  color: var(--muted);
  font-size: 13px;
}

.page-faq .faq-tabs .tab-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 14px;
}

.page-faq .tab {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  padding: 9px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background 0.18s var(--ease);
}

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

.page-faq .tab[aria-selected="true"] {
  background: rgba(53, 224, 208, 0.14);
  border-color: var(--cyan);
  color: var(--cyan);
}

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

.page-faq .faq-mini {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-mini__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px 18px;
  padding: 16px 18px;
  background: var(--panel-2);
}

.page-faq .faq-mini__q {
  font-weight: 600;
  font-size: 15px;
  color: var(--text);
}

.page-faq .faq-mini__a {
  grid-column: 1 / 2;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.75;
}

.page-faq .faq-mini__link {
  grid-column: 2 / 3;
  grid-row: 1 / 3;
  align-self: center;
  color: var(--cyan);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
}

.page-faq .faq-mini__link:hover,
.page-faq .faq-mini__link:focus-visible {
  color: var(--text);
  text-decoration: underline;
}

/* ---------- 完整答复 ---------- */
.page-faq .faq-answers-wrap {
  padding-block: clamp(36px, 6vw, 72px);
}

.page-faq .faq-answers__lead {
  max-width: 54ch;
  color: var(--muted);
  margin-bottom: clamp(22px, 4vw, 36px);
}

.page-faq .faq-shell {
  display: grid;
  gap: clamp(20px, 4vw, 44px);
  align-items: start;
}

.page-faq .faq-rail {
  display: none;
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  border-radius: 0 4px 4px 0;
  transition: color 0.15s var(--ease), background 0.15s var(--ease), border-color 0.15s var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--text);
  background: rgba(53, 224, 208, 0.08);
  border-left-color: var(--cyan-dim);
}

.page-faq .faq-rail__link[aria-current="true"] {
  color: var(--text);
  background: rgba(53, 224, 208, 0.1);
  border-left-color: var(--cyan);
}

.page-faq .faq-rail__num {
  font-size: 12px;
  color: var(--cyan);
  flex: none;
}

.page-faq .faq-answers {
  display: grid;
  gap: 12px;
  min-width: 0;
}

.page-faq .faq-item {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
  transition: border-color 0.2s var(--ease);
}

.page-faq .faq-item:hover {
  border-color: var(--cyan-dim);
}

.page-faq .faq-item[open] {
  border-color: var(--cyan-dim);
  background: var(--panel-2);
}

.page-faq .faq-item__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 44px 18px 18px;
  cursor: pointer;
  list-style: none;
  position: relative;
}

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

.page-faq .faq-item__head::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 18px;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-item[open] .faq-item__head::after {
  content: "−";
}

.page-faq .faq-num {
  flex: none;
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: 0.06em;
  padding-top: 3px;
}

.page-faq .faq-q {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(16px, 2.4vw, 19px);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.5;
  color: var(--text);
}

.page-faq .faq-item__body {
  padding: 0 18px 22px;
  border-top: 1px solid var(--line);
  margin-top: 2px;
  padding-top: 18px;
}

.page-faq .faq-item__body p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted);
  margin: 0 0 14px;
}

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

.page-faq .faq-item__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-dim);
}

.page-faq .faq-item__body a:hover,
.page-faq .faq-item__body a:focus-visible {
  color: var(--text);
  border-bottom-color: var(--text);
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

.page-faq .faq-steps .mono {
  font-size: 12px;
  color: var(--gold);
  padding-top: 5px;
  letter-spacing: 0.06em;
}

.page-faq .faq-meta {
  font-size: 12.5px !important;
  color: var(--muted);
  letter-spacing: 0.02em;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

.page-faq .faq-figure {
  margin: 0 0 16px;
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
  background: var(--ink);
}

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

.page-faq .faq-figure figcaption {
  padding: 9px 12px;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.06em;
  border-top: 1px solid var(--line);
}

.page-faq .faq-format {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-format li {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 12px 14px;
  background: rgba(11, 13, 16, 0.6);
  border-left: 2px solid var(--gold-deep);
}

.page-faq .faq-format__tag {
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--gold);
  padding-top: 2px;
}

.page-faq .faq-format__text {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text);
}

.page-faq .faq-contact {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin: 0 0 14px;
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding: 12px 14px;
  background: var(--panel);
}

.page-faq .faq-contact__label {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.08em;
  flex: none;
  width: 4.6em;
}

.page-faq .faq-contact__value {
  font-size: 14px;
  color: var(--text);
  word-break: break-all;
}

.page-faq .copy-btn {
  margin-left: auto;
  font-size: 12px;
  padding: 5px 12px;
  border: 1px solid var(--cyan-dim);
  border-radius: 999px;
  background: transparent;
  color: var(--cyan);
  cursor: pointer;
  font-family: var(--font-mono);
  transition: background 0.16s var(--ease), color 0.16s var(--ease);
}

.page-faq .copy-btn:hover {
  background: rgba(53, 224, 208, 0.14);
}

.page-faq .copy-btn.is-done {
  border-color: var(--ok);
  color: var(--ok);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-closing__inner {
  display: grid;
  gap: 20px;
  align-items: center;
  padding: clamp(22px, 4vw, 36px);
  background: linear-gradient(115deg, rgba(232, 163, 61, 0.1), rgba(20, 25, 34, 0.9) 46%);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-faq .faq-closing__inner .lead {
  color: var(--muted);
  max-width: 56ch;
}

.page-faq .faq-closing__inner .btn {
  justify-self: start;
  white-space: nowrap;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-mini__row {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: baseline;
  }

  .page-faq .faq-mini__q {
    grid-column: 1 / 2;
  }

  .page-faq .faq-mini__a {
    grid-column: 1 / 2;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  }

  .page-faq .faq-closing__inner {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .page-faq .faq-closing__inner .btn {
    justify-self: end;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
  }

  .page-faq .faq-rail {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 24px);
    padding: 16px 0;
    border-top: 1px solid var(--line);
  }

  .page-faq .faq-rail .index-rail-title {
    font-size: 12px;
    letter-spacing: 0.14em;
    color: var(--muted);
    text-transform: uppercase;
    margin: 0 0 12px 10px;
  }

  .page-faq .faq-item__head {
    padding: 22px 52px 22px 24px;
  }

  .page-faq .faq-item__body {
    padding: 20px 24px 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-quick__item,
  .page-faq .tab,
  .page-faq .faq-rail__link,
  .page-faq .faq-item {
    transition: none;
  }

  .page-faq .faq-quick__item:hover,
  .page-faq .faq-quick__item:focus-visible {
    transform: none;
  }
}