.page-faq {
  --faq-sticky: calc(var(--header-h) + 28px);
  --faq-body-text: #c9d7e2;
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 4vw, 42px) 0 clamp(32px, 5vw, 60px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(760px 380px at 92% -10%, rgba(53, 224, 208, 0.16), transparent 68%),
    radial-gradient(640px 340px at 2% 110%, rgba(23, 201, 100, 0.13), transparent 72%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -8%;
  bottom: 14px;
  width: 32%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan));
  transform: rotate(-7deg);
  opacity: 0.45;
  pointer-events: none;
}

.page-faq .faq-hero-top {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 36px);
  margin-bottom: clamp(24px, 4vw, 42px);
}

.page-faq .faq-hero h1 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 5vw, 52px);
  line-height: 1.04;
  letter-spacing: -0.03em;
  color: var(--paper);
}

.page-faq .faq-lede {
  max-width: 62ch;
  margin: 0 0 20px;
  font-size: clamp(14.5px, 1.1vw, 16.5px);
  line-height: 1.78;
  color: var(--faq-body-text);
}

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

.page-faq .faq-chips .chip {
  display: inline-block;
  padding: 7px 14px;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.02);
  color: var(--paper);
  font-size: 12.5px;
  text-decoration: none;
  clip-path: var(--cut-tag);
  transition: color 0.16s ease, border-color 0.16s ease, background-color 0.16s ease;
}

.page-faq .faq-chips .chip:hover,
.page-faq .faq-chips .chip:focus-visible {
  border-color: var(--green);
  color: var(--green);
  background: var(--green-veil);
}

.page-faq .faq-hero-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  clip-path: var(--cut-panel);
}

.page-faq .faq-meta-item {
  background: var(--ink-2);
  padding: 14px 12px 16px;
  min-width: 0;
}

.page-faq .faq-meta-num {
  font-family: var(--font-mono);
  font-size: clamp(21px, 3vw, 30px);
  font-weight: 700;
  line-height: 1;
  color: var(--green);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-meta-unit {
  margin-left: 3px;
  font-size: 11.5px;
  color: var(--muted);
}

.page-faq .faq-meta-item p {
  margin: 8px 0 0;
  font-size: 11.5px;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 首屏三步卡 ---------- */
.page-faq .faq-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  padding: 18px 18px 20px;
  border: 1px solid var(--line);
  background: linear-gradient(155deg, rgba(23, 201, 100, 0.11), rgba(13, 36, 54, 0.92) 58%);
  clip-path: var(--cut-panel);
  transition: border-color 0.16s ease, background-color 0.16s ease;
}

.page-faq .faq-step:hover {
  border-color: var(--green);
}

.page-faq .faq-step-num {
  display: block;
  margin-bottom: 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-faq .faq-step-title {
  display: block;
  margin-bottom: 7px;
  font-size: clamp(15.5px, 1.6vw, 19px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  padding: clamp(32px, 5vw, 64px) 0 clamp(40px, 6vw, 80px);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 40px);
  align-items: start;
}

.page-faq .faq-index {
  padding: 16px 14px 18px;
  border: 1px solid var(--line);
  background: var(--ink-2);
  clip-path: var(--cut-panel);
}

.page-faq .faq-index-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

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

.page-faq .legend-list a {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  align-items: baseline;
  gap: 8px;
  padding: 9px 10px;
  border-left: 2px solid var(--line);
  color: var(--muted);
  font-size: 13.5px;
  text-decoration: none;
  transition: color 0.16s ease, border-color 0.16s ease, background-color 0.16s ease;
}

.page-faq .legend-list a .legend-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: inherit;
  opacity: 0.75;
}

.page-faq .legend-list a:hover,
.page-faq .legend-list a:focus-visible {
  color: var(--paper);
  border-left-color: var(--cyan);
  background: var(--cyan-veil);
}

.page-faq .legend-list a[aria-current="true"] {
  color: var(--paper);
  border-left-color: var(--green);
  background: var(--green-veil);
}

.page-faq .faq-content {
  min-width: 0;
}

/* ---------- 章节 ---------- */
.page-faq .faq-section {
  scroll-margin-top: calc(var(--header-h) + 20px);
  padding-bottom: clamp(24px, 3.5vw, 40px);
}

.page-faq .faq-section + .faq-section {
  padding-top: clamp(26px, 4vw, 44px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-section h2 {
  margin: 8px 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(21px, 2.7vw, 31px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-intro {
  max-width: 64ch;
  margin: 0 0 18px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--faq-body-text);
}

/* ---------- 快速定位 ---------- */
.page-faq .faq-hot-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-top: 4px;
}

.page-faq .faq-hot-col {
  padding: 14px 14px 16px;
  border: 1px solid var(--line);
  background: rgba(13, 36, 54, 0.72);
  clip-path: var(--cut-tag);
}

.page-faq .faq-hot-col h3 {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-hot-col ul {
  display: grid;
  gap: 7px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hot-col a {
  display: inline-block;
  border-bottom: 1px solid transparent;
  color: var(--faq-body-text);
  font-size: 13px;
  line-height: 1.55;
  text-decoration: none;
  transition: color 0.16s ease, border-color 0.16s ease;
}

.page-faq .faq-hot-col a:hover,
.page-faq .faq-hot-col a:focus-visible {
  color: var(--green);
  border-bottom-color: var(--green);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-acc {
  margin: 0 0 8px;
  border: 1px solid var(--line);
  background: var(--ink-2);
  clip-path: var(--cut-tag);
  scroll-margin-top: calc(var(--header-h) + 20px);
  transition: border-color 0.16s ease;
}

.page-faq .faq-acc:hover {
  border-color: var(--line-strong);
}

.page-faq .faq-acc[open] {
  border-color: rgba(23, 201, 100, 0.5);
}

.page-faq .faq-acc > summary {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 13px 15px;
  cursor: pointer;
  list-style: none;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .faq-acc > summary::-webkit-details-marker {
  display: none;
}

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

.page-faq .faq-acc[open] > summary::after {
  content: "－";
  color: var(--green);
}

.page-faq .faq-acc > summary:hover {
  color: var(--green);
}

.page-faq .faq-acc > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-acc-body {
  margin-top: 2px;
  padding: 12px 15px 16px;
  border-top: 1px solid var(--line);
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--faq-body-text);
}

.page-faq .faq-acc-body p {
  margin: 0 0 10px;
}

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

.page-faq .faq-acc-body strong {
  color: var(--paper);
  font-weight: 700;
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 18px 0 20px;
}

.page-faq .faq-figure-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-2);
  clip-path: var(--cut-media);
}

.page-faq .faq-figure-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, rgba(53, 224, 208, 0.14), transparent 46%, rgba(8, 24, 38, 0.42) 100%);
  pointer-events: none;
}

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

.page-faq .faq-figure figcaption {
  margin-top: 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: var(--muted);
}

.page-faq .faq-linkline {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-linkline a,
.page-faq .faq-support-extra a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  transition: color 0.16s ease, border-color 0.16s ease;
}

.page-faq .faq-linkline a:hover,
.page-faq .faq-linkline a:focus-visible,
.page-faq .faq-support-extra a:hover,
.page-faq .faq-support-extra a:focus-visible {
  color: var(--green);
  border-bottom-color: var(--green);
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 6px;
}

.page-faq .faq-contact-card {
  padding: 18px 18px 20px;
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(53, 224, 208, 0.09), rgba(13, 36, 54, 0.88) 62%);
  clip-path: var(--cut-panel);
}

.page-faq .faq-contact-label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-contact-value {
  display: inline-block;
  max-width: 100%;
  font-family: var(--font-mono);
  font-size: clamp(14.5px, 1.6vw, 18px);
  font-weight: 700;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  overflow-wrap: anywhere;
  word-break: break-word;
  transition: color 0.16s ease, border-color 0.16s ease;
}

.page-faq .faq-contact-value:hover,
.page-faq .faq-contact-value:focus-visible {
  color: var(--green);
  border-bottom-color: var(--green);
}

.page-faq .faq-contact-note {
  margin: 10px 0 0;
  font-size: 12.5px;
  line-height: 1.68;
  color: var(--muted);
}

.page-faq .faq-support-extra {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
  }

  .page-faq .faq-hot-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-contact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero-top {
    grid-template-columns: 7fr 5fr;
    align-items: end;
  }

  .page-faq .faq-hot-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 280px minmax(0, 1fr);
    gap: clamp(28px, 3vw, 44px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-sticky);
  }
}

@media (max-width: 420px) {
  .page-faq .faq-meta-item {
    padding: 12px 9px 14px;
  }

  .page-faq .faq-meta-item p {
    font-size: 10.5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-chips .chip,
  .page-faq .faq-step,
  .page-faq .legend-list a,
  .page-faq .faq-hot-col a,
  .page-faq .faq-acc,
  .page-faq .faq-contact-value,
  .page-faq .faq-linkline a,
  .page-faq .faq-support-extra a {
    transition: none;
  }
}