.page-faq {
  --faq-line: rgba(141, 246, 244, 0.18);
  --faq-line-soft: rgba(168, 198, 216, 0.22);
  --faq-panel: rgba(19, 43, 64, 0.72);
  --faq-panel-strong: rgba(16, 38, 63, 0.94);
  position: relative;
  overflow-x: clip;
  padding-bottom: clamp(40px, 7vw, 84px);
  font-family: var(--font-sans);
  color: var(--mist);
}

.page-faq [id] {
  scroll-margin-top: 108px;
}

.page-faq .breadcrumb {
  padding-top: clamp(18px, 3vw, 32px);
}

/* ---------- 首屏 ---------- */

.page-faq .hero {
  position: relative;
  padding: clamp(22px, 4vw, 52px) 0 clamp(30px, 5vw, 62px);
}

.page-faq .hero::before {
  content: "";
  position: absolute;
  top: -12%;
  right: -18%;
  width: min(560px, 82vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 58% 42%, rgba(25, 229, 230, 0.22), transparent 68%);
  filter: blur(8px);
  pointer-events: none;
  z-index: 0;
}

.page-faq .hero::after {
  content: "";
  position: absolute;
  left: -14%;
  bottom: -18%;
  width: min(420px, 70vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 50% 50%, rgba(242, 184, 75, 0.16), transparent 70%);
  filter: blur(10px);
  pointer-events: none;
  z-index: 0;
}

.page-faq .hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 5vw, 52px);
}

.page-faq .hero__title {
  margin: 14px 0 0;
  font-size: clamp(34px, 8vw, 68px);
  line-height: 1.04;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--mist);
}

.page-faq .hero__title em {
  font-style: normal;
  color: var(--cyan);
}

.page-faq .hero__lead {
  margin: 18px 0 0;
  max-width: 48ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.78;
  color: var(--haze);
}

.page-faq .hero__stats {
  display: grid;
  gap: 12px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .hero__stats li {
  padding-top: 12px;
  border-top: 2px solid rgba(25, 229, 230, 0.4);
}

.page-faq .hero__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(19px, 2.6vw, 25px);
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: -0.01em;
}

.page-faq .hero__cap {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--haze);
}

.page-faq .hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .hero__media .media-frame {
  border-radius: var(--radius-organic);
  box-shadow: var(--shadow-soft);
}

/* ---------- 通用区块头 ---------- */

.page-faq .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--haze);
}

.page-faq .section-title {
  margin: 10px 0 0;
  font-size: clamp(25px, 3.7vw, 40px);
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: -0.012em;
  color: var(--mist);
}

.page-faq .section-lead {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 16.5px);
  line-height: 1.78;
  color: var(--haze);
}

/* ---------- 方向索引 ---------- */

.page-faq .index-strip {
  padding-top: clamp(12px, 3vw, 26px);
}

.page-faq .idx-grid {
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.page-faq .idx {
  display: block;
  min-height: 100%;
  padding: 20px 18px 22px;
  background: var(--faq-panel);
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-organic);
  color: inherit;
  text-decoration: none;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), background 0.35s var(--ease);
}

.page-faq .idx:hover,
.page-faq .idx:focus-visible {
  transform: translateY(-4px);
  border-color: rgba(25, 229, 230, 0.5);
  background: var(--faq-panel-strong);
}

.page-faq .idx:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .idx__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-faq .idx__icon {
  display: block;
  width: 34px;
  height: 34px;
  margin-top: 12px;
  color: var(--cyan);
}

.page-faq .idx__title {
  margin: 12px 0 8px;
  font-size: 18px;
  font-weight: 800;
  color: var(--mist);
}

.page-faq .idx__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.68;
  color: var(--haze);
}

/* ---------- 内容区块 ---------- */

.page-faq .block {
  padding-top: clamp(46px, 7.5vw, 92px);
}

.page-faq .block__head {
  max-width: 70ch;
}

/* ---------- 问答折叠 ---------- */

.page-faq .qa-list {
  display: grid;
  gap: 10px;
  margin-top: 26px;
}

.page-faq .qa {
  background: var(--faq-panel);
  border: 1px solid var(--faq-line-soft);
  border-radius: var(--radius-organic);
  overflow: hidden;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.page-faq .qa[open] {
  border-color: rgba(25, 229, 230, 0.42);
  background: var(--faq-panel-strong);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin: 0;
  padding: 16px 18px;
  font-size: clamp(15px, 1.75vw, 17px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--mist);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -3px;
}

.page-faq .qa__no {
  flex: none;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan);
}

.page-faq .qa[open] .qa__no {
  color: var(--gold);
}

.page-faq .qa__mark {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  margin: 6px 0 0 auto;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--haze);
  transform: translate(-50%, -50%);
  transition: transform 0.3s var(--ease), background 0.3s var(--ease);
}

.page-faq .qa__mark::before {
  width: 14px;
  height: 2px;
}

.page-faq .qa__mark::after {
  width: 2px;
  height: 14px;
}

.page-faq .qa[open] .qa__mark::before {
  background: var(--cyan);
}

.page-faq .qa[open] .qa__mark::after {
  background: var(--cyan);
  transform: translate(-50%, -50%) scaleY(0);
}

.page-faq .qa__a {
  margin-top: 2px;
  padding: 14px 18px 18px;
  border-top: 1px solid var(--faq-line);
}

.page-faq .qa__a p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.82;
  color: var(--haze);
}

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

.page-faq .qa__a strong {
  color: var(--mist);
  font-weight: 700;
}

.page-faq .qa__a ul {
  margin: 10px 0 0;
  padding-left: 18px;
}

.page-faq .qa__a li {
  margin: 5px 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--haze);
}

/* ---------- 约看三步 ---------- */

.page-faq .step-row {
  display: grid;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .step {
  position: relative;
  padding: 20px 18px 22px 24px;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-organic);
  background: linear-gradient(180deg, rgba(16, 38, 63, 0.92), rgba(8, 26, 43, 0.72));
}

.page-faq .step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--cyan), var(--gold));
}

.page-faq .step__no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-faq .step__title {
  margin: 10px 0 8px;
  font-size: 17px;
  font-weight: 800;
  color: var(--mist);
}

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

/* ---------- 两版本对照 ---------- */

.page-faq .vs {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.page-faq .vs__col {
  padding: 22px 20px 24px;
  border: 1px solid var(--faq-line-soft);
  border-radius: var(--radius-organic);
  background: var(--faq-panel);
}

.page-faq .vs__col--time {
  background: linear-gradient(158deg, rgba(25, 229, 230, 0.15), rgba(8, 26, 43, 0.88) 62%);
  border-color: rgba(25, 229, 230, 0.32);
}

.page-faq .vs__col--group {
  background: linear-gradient(158deg, rgba(242, 184, 75, 0.17), rgba(8, 26, 43, 0.88) 62%);
  border-color: rgba(242, 184, 75, 0.34);
}

.page-faq .vs__tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan-soft);
}

.page-faq .vs__col--group .vs__tag {
  color: var(--gold-soft);
}

.page-faq .vs__title {
  margin: 10px 0 14px;
  font-size: clamp(20px, 2.4vw, 24px);
  font-weight: 800;
  color: var(--mist);
}

.page-faq .vs__list {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .vs__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .vs__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--cyan);
}

.page-faq .vs__col--group .vs__list li::before {
  background: var(--gold);
}

/* ---------- 关注列表 ---------- */

.page-faq .watch {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
  margin-top: 28px;
}

.page-faq .watch__media .media-frame {
  border-radius: var(--radius-organic);
  border: 1px solid var(--faq-line);
}

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

.page-faq .trace li {
  position: relative;
  padding: 0 0 20px 30px;
  border-left: 2px solid rgba(25, 229, 230, 0.28);
}

.page-faq .trace li:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-faq .trace li::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--cyan);
  box-sizing: border-box;
}

.page-faq .trace li:first-child::before {
  border-color: var(--gold);
}

.page-faq .trace__k {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--haze);
}

.page-faq .trace__t {
  display: block;
  margin-top: 4px;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--mist);
}

.page-faq .trace__d {
  display: block;
  margin-top: 3px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--haze);
}

.page-faq .watch__body .qa-list {
  margin-top: 26px;
}

/* ---------- 联系支持 ---------- */

.page-faq .support {
  margin-top: clamp(48px, 7.5vw, 96px);
  padding: clamp(26px, 4.6vw, 48px);
  border: 1px solid rgba(242, 184, 75, 0.34);
  border-radius: var(--radius-organic);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(242, 184, 75, 0.22), transparent 58%),
    linear-gradient(160deg, rgba(16, 38, 63, 0.96), rgba(8, 26, 43, 0.94));
}

.page-faq .support__grid {
  display: grid;
  gap: clamp(24px, 4.2vw, 44px);
}

.page-faq .support__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .support__meta {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-faq .support__meta .contact-line {
  padding: 12px 0;
  border-bottom: 1px dashed rgba(168, 198, 216, 0.26);
}

.page-faq .support__meta .contact-line:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.page-faq .copy-mail {
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.4;
  color: var(--gold-soft);
  background: rgba(242, 184, 75, 0.1);
  border: 1px dashed rgba(242, 184, 75, 0.5);
  border-radius: var(--radius-pill);
  padding: 9px 16px;
  cursor: pointer;
  word-break: break-all;
  transition: background 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-faq .copy-mail:hover,
.page-faq .copy-mail:focus-visible {
  background: rgba(242, 184, 75, 0.2);
  border-color: var(--gold);
  color: var(--gold-soft);
}

.page-faq .copy-mail:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 560px) {
  .page-faq .hero__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (min-width: 640px) {
  .page-faq .idx-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-faq .step-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 820px) {
  .page-faq .vs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-faq .support__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-faq .watch {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    align-items: start;
  }
}

@media (min-width: 940px) {
  .page-faq .hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: center;
  }
}

@media (min-width: 1080px) {
  .page-faq .idx-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .idx:hover,
  .page-faq .idx:focus-visible {
    transform: none;
  }

  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after,
  .page-faq .idx,
  .page-faq .qa,
  .page-faq .copy-mail {
    transition: none;
  }
}