.page-faq {
  --faq-rail-w: 82px;
  --faq-answer-line: rgba(34, 224, 200, 0.9);
  color: var(--text);
}

.page-faq .section-title {
  font-family: var(--font-display);
  font-size: clamp(26px, 3.6vw, 38px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  margin: 0 0 20px;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding-block: clamp(24px, 4vw, 48px) clamp(44px, 7vw, 92px);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -180px;
  right: -140px;
  width: min(760px, 86vw);
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(34, 224, 200, 0.13), transparent 64%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: -140px;
  bottom: -180px;
  width: min(560px, 70vw);
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(255, 59, 78, 0.1), transparent 66%);
  pointer-events: none;
}

.page-faq .hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 56px);
  align-items: start;
}

.page-faq .hero-copy .breadcrumb {
  margin-bottom: 16px;
}

.page-faq .hero-copy h1 {
  font-family: var(--font-display);
  font-size: clamp(32px, 5.4vw, 58px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0;
  max-width: 17ch;
}

.page-faq .hero-lede {
  margin: clamp(14px, 2vw, 20px) 0 0;
  max-width: 46ch;
  color: var(--text-soft);
  font-size: clamp(16px, 1.6vw, 17px);
  line-height: 1.8;
}

.page-faq .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: clamp(26px, 4vw, 38px) 0 0;
  padding-block-start: 20px;
  border-block-start: 1px solid var(--line);
}

.page-faq .hero-facts dt {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-faq .hero-facts dd {
  margin: 8px 0 0;
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: clamp(19px, 2.6vw, 26px);
  color: var(--text);
}

.page-faq .hero-facts dd.hero-fact-cyan {
  color: var(--cyan);
}

.page-faq .hero-facts dd.hero-fact-gold {
  color: var(--gold);
}

.page-faq .hero-visual {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--panel);
  box-shadow: var(--shadow-float);
}

.page-faq .hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.95) contrast(1.05);
}

.page-faq .hero-visual::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 8px;
  background: repeating-linear-gradient(135deg, rgba(245, 166, 35, 0.75) 0 7px, rgba(7, 9, 13, 0) 7px 16px);
  opacity: 0.75;
  pointer-events: none;
}

.page-faq .hero-chip {
  position: absolute;
  left: 16px;
  bottom: 22px;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 16px;
  border-radius: var(--pill);
  font-size: 13px;
  color: var(--text-soft);
  backdrop-filter: blur(10px);
  max-width: calc(100% - 32px);
}

/* ---------- 问答主体 ---------- */

.page-faq .faq-answers {
  padding-block: clamp(36px, 6vw, 78px);
}

.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 40px);
}

.page-faq .faq-tabs .segmented-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-tabs .segmented-list .segmented-btn {
  font-size: 14px;
}

.page-faq .faq-tabs .segmented-btn[aria-selected="true"] {
  border-color: var(--red);
  color: var(--text);
  background: rgba(255, 59, 78, 0.14);
}

.page-faq .faq-tabs .segmented-panel {
  margin-top: 26px;
}

.page-faq .faq-tabs .segmented-panel + .segmented-panel {
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-panel-media {
  margin: 0 0 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--panel);
}

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

.page-faq .faq-item {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 160ms ease, transform 160ms ease;
}

.page-faq .faq-item:hover {
  border-color: #33404f;
}

.page-faq .faq-q {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 17px 20px;
  cursor: pointer;
  font-size: clamp(15px, 1.7vw, 16px);
  font-weight: 500;
  line-height: 1.6;
  color: var(--text);
  list-style: none;
}

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

.page-faq .faq-q::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-data);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
  flex: none;
}

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

.page-faq .faq-item[open] {
  border-color: #2c3a46;
}

.page-faq .faq-answer {
  margin: 0 20px 20px;
  padding-left: 16px;
  border-left: 2px solid var(--faq-answer-line);
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.8;
  max-width: 68ch;
}

.page-faq .faq-answer p {
  margin: 0;
}

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

.page-faq .faq-steps {
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: faq-step;
}

.page-faq .faq-steps li {
  counter-increment: faq-step;
  position: relative;
  padding-left: 32px;
  margin-top: 8px;
}

.page-faq .faq-steps li:first-child {
  margin-top: 0;
}

.page-faq .faq-steps li::before {
  content: counter(faq-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  color: var(--cyan);
}

.page-faq .faq-terms {
  margin: 0;
}

.page-faq .faq-terms dt {
  margin-top: 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
}

.page-faq .faq-terms dt:first-child {
  margin-top: 0;
}

.page-faq .faq-terms dd {
  margin: 4px 0 0;
  font-size: 14px;
  color: var(--muted);
}

/* ---------- 侧边索引 ---------- */

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

.page-faq .rail-title {
  margin: 0;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--gold);
  writing-mode: vertical-rl;
}

.page-faq .rail-index {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .rail-num {
  font-family: var(--font-data);
  font-size: 11px;
  color: var(--cyan);
}

.page-faq .rail-label {
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--text-soft);
}

/* ---------- 联系客服 ---------- */

.page-faq .faq-contact {
  position: relative;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(15, 43, 46, 0.42), rgba(7, 9, 13, 0) 68%);
  padding-block: clamp(46px, 7vw, 94px);
}

.page-faq .contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-faq .contact-copy .eyebrow {
  margin-bottom: 10px;
}

.page-faq .contact-checklist {
  margin: 0 0 clamp(20px, 3vw, 28px);
  padding: 0;
  list-style: none;
  counter-reset: faq-contact-step;
}

.page-faq .contact-checklist li {
  counter-increment: faq-contact-step;
  position: relative;
  padding-left: 40px;
  margin-top: 12px;
  color: var(--text-soft);
  line-height: 1.75;
}

.page-faq .contact-checklist li:first-child {
  margin-top: 0;
}

.page-faq .contact-checklist li::before {
  content: counter(faq-contact-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 3px;
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--gold);
}

.page-faq .contact-panel {
  padding: clamp(20px, 3vw, 30px);
  border-radius: var(--radius-lg);
}

.page-faq .contact-panel dl {
  margin: 0;
  display: grid;
  gap: 16px;
}

.page-faq .contact-panel dt {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .contact-panel dd {
  margin: 6px 0 0;
  font-family: var(--font-data);
  font-size: 16px;
  color: var(--text);
  word-break: break-word;
}

.page-faq .contact-note {
  margin: 20px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-faq .contact-legal {
  margin: 12px 0 0;
  font-size: 13px;
  color: var(--muted);
}

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

/* ---------- 断点 ---------- */

@media (min-width: 700px) {
  .page-faq .faq-panel-media {
    margin-bottom: 26px;
  }
}

@media (min-width: 960px) {
  .page-faq .hero-grid {
    grid-template-columns: minmax(0, 45fr) minmax(0, 55fr);
    gap: clamp(32px, 4vw, 64px);
  }

  .page-faq .hero-visual {
    margin-top: -6px;
  }

  .page-faq .faq-tabs .segmented-panel {
    margin-top: 30px;
  }

  .page-faq .contact-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(0, 1fr) var(--faq-rail-w);
  }

  .page-faq .faq-rail {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    position: sticky;
    top: 112px;
    align-self: start;
    padding-left: 16px;
    border-left: 1px solid var(--line);
  }

  .page-faq .rail-index {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
  }

  .page-faq .rail-index li {
    display: flex;
    align-items: center;
    gap: 6px;
  }
}

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