.page-faq {
  --faq-radius: 4px;
  --faq-card-bg: #FFFDF8;
  --clay-line: rgba(180, 105, 74, .5);
}

/* ============ 首屏 ============ */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(115% 85% at 84% 6%, rgba(53, 224, 200, .15), transparent 58%),
    radial-gradient(85% 70% at 4% 100%, rgba(212, 168, 83, .13), transparent 62%),
    var(--navy);
  color: var(--paper);
  padding-top: clamp(1.75rem, 4.5vw, 3.25rem);
  padding-bottom: clamp(2.5rem, 6vw, 4.5rem);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -18%;
  right: -10%;
  width: min(54vw, 620px);
  aspect-ratio: 1;
  background: linear-gradient(135deg, rgba(53, 224, 200, .10), rgba(212, 168, 83, .06) 58%, transparent);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold) 0%, var(--cyan) 52%, transparent 100%);
}

.page-faq .faq-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 4vw, 3.25rem);
  align-items: center;
}

/* 面包屑 */
.page-faq .crumbs {
  margin-bottom: clamp(1rem, 2.5vw, 1.5rem);
}

.page-faq .crumbs-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .1em;
}

.page-faq .crumb a {
  color: rgba(244, 241, 232, .6);
  text-decoration: none;
  transition: color .2s var(--ease);
}

.page-faq .crumb a:hover {
  color: var(--cyan);
}

.page-faq .crumb-sep {
  color: rgba(244, 241, 232, .3);
}

.page-faq .crumb--current {
  color: var(--gold);
}

/* 标题区 */
.page-faq .faq-hero .eyebrow {
  margin: 0 0 .85rem;
  color: var(--gold);
}

.page-faq .faq-hero h1 {
  margin: 0 0 clamp(1rem, 2.5vw, 1.5rem);
  font-size: clamp(1.85rem, 5.4vw, 3.4rem);
  font-weight: 800;
  letter-spacing: .05em;
  line-height: 1.22;
  color: var(--paper);
}

.page-faq .faq-hero .lede {
  margin: 0;
  max-width: 46ch;
  font-size: clamp(.95rem, 1.05vw, 1.0625rem);
  line-height: 1.85;
  color: rgba(244, 241, 232, .76);
}

/* 检索框 */
.page-faq .faq-search {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-top: clamp(1.5rem, 3vw, 2rem);
  padding: .3rem .4rem .3rem 1rem;
  background: rgba(244, 241, 232, .06);
  border: 1px solid rgba(232, 226, 210, .28);
  border-radius: var(--faq-radius);
  transition: border-color .24s var(--ease), box-shadow .24s var(--ease), background-color .24s var(--ease);
}

.page-faq .faq-search:focus-within {
  border-color: var(--cyan);
  background: rgba(244, 241, 232, .1);
  box-shadow: 0 0 0 3px rgba(53, 224, 200, .16), 0 0 30px rgba(53, 224, 200, .2);
}

.page-faq .faq-search-input {
  flex: 1 1 auto;
  min-width: 0;
  padding: .72rem 0;
  border: 0;
  outline: none;
  background: transparent;
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 1rem;
  letter-spacing: .01em;
}

.page-faq .faq-search-input::placeholder {
  color: rgba(244, 241, 232, .42);
}

.page-faq .faq-search-input::-webkit-search-cancel-button {
  -webkit-appearance: none;
  appearance: none;
}

.page-faq .faq-search-key {
  flex: 0 0 auto;
  padding: .38rem .6rem;
  border: 1px solid rgba(53, 224, 200, .45);
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .14em;
  color: var(--cyan);
}

/* 快捷入口 */
.page-faq .faq-quick {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-quick a {
  display: inline-block;
  padding: .42rem .82rem;
  border: 1px solid rgba(232, 226, 210, .22);
  border-radius: 999px;
  font-size: .8125rem;
  letter-spacing: .06em;
  color: rgba(244, 241, 232, .82);
  text-decoration: none;
  transition: color .2s var(--ease), background-color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-quick a:hover {
  color: var(--navy);
  background: var(--cyan);
  border-color: var(--cyan);
}

/* 首屏配图 */
.page-faq .faq-hero-media {
  position: relative;
  padding: .65rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--faq-radius);
  background: rgba(8, 21, 44, .55);
  box-shadow: 0 20px 48px rgba(3, 8, 18, .5);
}

.page-faq .faq-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  border-left: 2px solid var(--cyan);
  border-bottom: 2px solid var(--gold);
  border-radius: var(--faq-radius);
  opacity: .6;
  pointer-events: none;
}

.page-faq .faq-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: 2px;
  object-fit: cover;
}

/* ============ 热门条 ============ */
.page-faq .faq-hot {
  background: var(--navy-2);
  color: var(--paper);
  padding-top: clamp(1.25rem, 3vw, 1.75rem);
  padding-bottom: clamp(1.25rem, 3vw, 1.75rem);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hot-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-faq .faq-hot-title {
  margin: 0;
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .16em;
  color: var(--gold);
}

.page-faq .faq-hot-list {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.35rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hot-list a {
  display: inline-flex;
  align-items: baseline;
  gap: .5rem;
  font-size: .875rem;
  line-height: 1.6;
  color: rgba(244, 241, 232, .8);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-hot-list a:hover {
  color: var(--cyan);
  border-bottom-color: rgba(53, 224, 200, .5);
}

.page-faq .faq-hot-idx {
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .1em;
  color: var(--cyan);
}

/* ============ 五类问答矩阵 ============ */
.page-faq .faq-catalog {
  background: var(--paper);
  color: var(--ink);
  padding-top: clamp(2.5rem, 6vw, 5rem);
  padding-bottom: clamp(2.5rem, 6vw, 5rem);
}

.page-faq .faq-catalog .eyebrow {
  color: var(--clay);
}

.page-faq .faq-catalog .section-title {
  margin: 0 0 .85rem;
  color: var(--navy);
}

.page-faq .faq-catalog .lede {
  max-width: 68ch;
  margin: 0;
  color: var(--ink-soft);
}

.page-faq .faq-catalog-head {
  margin-bottom: clamp(1.75rem, 4vw, 2.75rem);
}

.page-faq .faq-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1rem, 2.2vw, 1.5rem);
}

.page-faq .faq-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: clamp(1.1rem, 2.2vw, 1.5rem);
  background: var(--faq-card-bg);
  border: 1px solid var(--edge);
  border-radius: var(--faq-radius);
  box-shadow: 0 2px 0 var(--edge), 0 14px 30px rgba(11, 27, 58, .07);
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
}

.page-faq .faq-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: .9rem;
}

.page-faq .faq-card-idx {
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .12em;
  color: var(--stone);
}

.page-faq .faq-card-title {
  margin: 0 0 .5rem;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: .03em;
  color: var(--navy);
}

.page-faq .faq-card-title::after {
  content: "";
  display: block;
  width: 1.75rem;
  height: 2px;
  margin-top: .55rem;
  background: var(--gold);
}

.page-faq .faq-card-note {
  margin: 0 0 1rem;
  font-size: .875rem;
  line-height: 1.7;
  color: var(--stone);
}

/* 分类标签 */
.page-faq .faq-tag {
  display: inline-flex;
  align-items: center;
  padding: .28rem .62rem;
  border-radius: 3px;
  font-family: var(--font-sans);
  font-size: .75rem;
  font-weight: 500;
  letter-spacing: .12em;
  line-height: 1.4;
  color: #fff;
  background: var(--stone);
}

.page-faq .faq-tag--register { background: var(--moss); }
.page-faq .faq-tag--login { background: var(--cyan-ink); }
.page-faq .faq-tag--security { background: var(--stone); }
.page-faq .faq-tag--version { background: var(--clay); }
.page-faq .faq-tag--device { background: var(--gold); color: var(--navy); }

/* 问题折叠项 */
.page-faq .faq-qlist {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--edge);
}

.page-faq .faq-qlist > li {
  border-bottom: 1px solid var(--edge);
}

.page-faq .faq-qlist > li:last-child {
  border-bottom: 0;
}

.page-faq .faq-q summary {
  position: relative;
  display: block;
  padding: .85rem 1.6rem .85rem 0;
  font-size: .9375rem;
  line-height: 1.6;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  transition: color .2s var(--ease);
}

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

.page-faq .faq-q summary::marker {
  content: "";
}

.page-faq .faq-q summary::after {
  content: "";
  position: absolute;
  top: 1.35rem;
  right: .4rem;
  width: .42rem;
  height: .42rem;
  border-right: 2px solid var(--cyan-ink);
  border-bottom: 2px solid var(--cyan-ink);
  transform: rotate(45deg);
  transition: transform .24s var(--ease);
}

.page-faq .faq-q[open] summary::after {
  transform: rotate(-135deg);
}

.page-faq .faq-q summary:hover,
.page-faq .faq-q summary:focus-visible {
  color: var(--cyan-ink);
}

.page-faq .faq-q-body {
  margin: 0 0 1rem;
  padding-right: .35rem;
  font-size: .875rem;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-faq .faq-q-body a {
  color: var(--cyan-ink);
  text-decoration: none;
  border-bottom: 1px solid rgba(15, 124, 111, .35);
  transition: border-color .2s var(--ease);
}

.page-faq .faq-q-body a:hover {
  border-bottom-color: var(--cyan-ink);
}

/* ============ 登录排查六步 ============ */
.page-faq .faq-steps {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--navy-3) 0%, var(--navy) 48%, var(--navy-2) 100%);
  color: var(--paper);
  padding-top: clamp(2.5rem, 6vw, 5rem);
  padding-bottom: clamp(2.5rem, 6vw, 5rem);
}

.page-faq .faq-steps::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(232, 226, 210, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232, 226, 210, .045) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
}

.page-faq .faq-steps-inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-steps .eyebrow {
  margin: 0 0 .85rem;
  color: var(--gold);
}

.page-faq .faq-steps .section-title {
  margin: 0 0 .9rem;
  color: var(--paper);
}

.page-faq .faq-steps .lede {
  max-width: 64ch;
  margin: 0;
  color: rgba(244, 241, 232, .72);
}

.page-faq .faq-step-list {
  position: relative;
  margin: clamp(2rem, 4vw, 3rem) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step-list::before {
  content: "";
  position: absolute;
  left: 15px;
  top: .7rem;
  bottom: .7rem;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan) 0%, rgba(53, 224, 200, .1) 100%);
}

.page-faq .faq-step {
  position: relative;
  padding-left: 3.25rem;
  padding-bottom: 1.9rem;
}

.page-faq .faq-step:last-child {
  padding-bottom: 0;
}

.page-faq .faq-step-num {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--cyan);
  color: var(--navy);
  font-family: var(--font-mono);
  font-size: .75rem;
  font-weight: 500;
  letter-spacing: .04em;
  box-shadow: 0 0 0 4px var(--navy-3);
}

.page-faq .faq-step-title {
  margin: .15rem 0 .45rem;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--paper);
}

.page-faq .faq-step p {
  margin: 0;
  max-width: 72ch;
  font-size: .9375rem;
  line-height: 1.85;
  color: rgba(244, 241, 232, .72);
}

.page-faq .faq-step p a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 200, .4);
  transition: border-color .2s var(--ease);
}

.page-faq .faq-step p a:hover {
  border-bottom-color: var(--cyan);
}

.page-faq .faq-steps-figure {
  margin: clamp(2rem, 4vw, 2.75rem) 0 0;
  max-width: 880px;
}

.page-faq .faq-steps-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: rgba(244, 241, 232, .04);
  object-fit: cover;
}

.page-faq .faq-steps-figure figcaption {
  margin-top: .75rem;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .08em;
  line-height: 1.8;
  color: rgba(244, 241, 232, .55);
}

/* ============ 难度分层 ============ */
.page-faq .faq-depth {
  background: linear-gradient(180deg, var(--paper) 0%, #EDE7D6 100%);
  color: var(--ink);
  padding-top: clamp(2.5rem, 6vw, 5rem);
  padding-bottom: clamp(2.5rem, 6vw, 5rem);
}

.page-faq .faq-depth .eyebrow {
  color: var(--clay);
}

.page-faq .faq-depth .section-title {
  margin: 0 0 .85rem;
  color: var(--navy);
}

.page-faq .faq-depth .lede {
  max-width: 66ch;
  margin: 0;
  color: var(--ink-soft);
}

.page-faq .faq-depth-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1rem, 2.2vw, 1.5rem);
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
}

.page-faq .faq-depth-col {
  padding: clamp(1.25rem, 2.4vw, 1.75rem);
  background: var(--navy);
  border: 1px solid rgba(232, 226, 210, .14);
  border-radius: var(--faq-radius);
  color: var(--paper);
  box-shadow: 0 16px 34px rgba(11, 27, 58, .18);
}

.page-faq .faq-depth-col--entry { border-top: 3px solid var(--cyan); }
.page-faq .faq-depth-col--trouble { border-top: 3px solid var(--clay); }
.page-faq .faq-depth-col--advanced { border-top: 3px solid var(--gold); }

.page-faq .faq-depth-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: .9rem;
}

.page-faq .faq-depth-idx {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .14em;
  color: rgba(244, 241, 232, .5);
}

.page-faq .faq-depth-col h3 {
  margin: 0 0 .9rem;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: .03em;
  color: var(--paper);
}

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

.page-faq .faq-depth-list li {
  position: relative;
  padding-left: 1.15rem;
  margin-bottom: .7rem;
  font-size: .875rem;
  line-height: 1.8;
  color: rgba(244, 241, 232, .74);
}

.page-faq .faq-depth-list li:last-child {
  margin-bottom: 0;
}

.page-faq .faq-depth-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: .45rem;
  height: 1px;
  background: var(--cyan);
}

/* ============ 人工协助 ============ */
.page-faq .faq-assist {
  background: var(--navy-3);
  color: var(--paper);
  padding-top: clamp(2.5rem, 6vw, 5rem);
  padding-bottom: clamp(2.5rem, 6vw, 5rem);
}

.page-faq .faq-assist-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 4vw, 3rem);
}

.page-faq .faq-assist .eyebrow {
  margin: 0 0 .85rem;
  color: var(--gold);
}

.page-faq .faq-assist .section-title {
  margin: 0 0 .9rem;
  color: var(--paper);
}

.page-faq .faq-assist .lede {
  max-width: 60ch;
  margin: 0 0 1.5rem;
  color: rgba(244, 241, 232, .72);
}

.page-faq .faq-assist-list {
  display: grid;
  gap: .55rem;
  margin: 0 0 1.75rem;
  padding: 0;
  list-style: none;
}

.page-faq .faq-assist-list li {
  position: relative;
  padding-left: 1.6rem;
  font-size: .9375rem;
  line-height: 1.8;
  color: rgba(244, 241, 232, .8);
}

.page-faq .faq-assist-list li::before {
  content: "";
  position: absolute;
  left: .15rem;
  top: .68em;
  width: .42rem;
  height: .42rem;
  border: 1.5px solid var(--cyan);
  transform: rotate(45deg);
}

.page-faq .faq-assist-card {
  padding: clamp(1.25rem, 2.4vw, 1.75rem);
  background: rgba(244, 241, 232, .05);
  border: 1px solid var(--line-strong);
  border-left: 2px solid var(--gold);
  border-radius: var(--faq-radius);
}

.page-faq .faq-assist-card-label {
  margin: 0 0 .3rem;
  font-size: .75rem;
  letter-spacing: .16em;
  color: var(--gold);
}

.page-faq .faq-assist-card-value {
  margin: 0 0 1.1rem;
  font-family: var(--font-mono);
  font-size: clamp(.8125rem, 1.6vw, .9375rem);
  letter-spacing: .04em;
  line-height: 1.65;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-assist-card-note {
  margin: 0;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: .8125rem;
  line-height: 1.85;
  color: rgba(244, 241, 232, .6);
}

.page-faq .faq-assist-card-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 200, .4);
  transition: border-color .2s var(--ease);
}

.page-faq .faq-assist-card-note a:hover {
  border-bottom-color: var(--cyan);
}

.page-faq .faq-assist-card > *:last-child {
  margin-bottom: 0;
}

/* ============ 响应式 ============ */
@media (min-width: 700px) {
  .page-faq .faq-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (min-width: 920px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
  }
}

@media (min-width: 940px) {
  .page-faq .faq-hot-inner {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 2.5rem;
  }

  .page-faq .faq-hot-title {
    white-space: nowrap;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-assist-inner {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-search,
  .page-faq .faq-quick a,
  .page-faq .faq-hot-list a,
  .page-faq .faq-q summary,
  .page-faq .faq-q summary::after,
  .page-faq .faq-q-body a,
  .page-faq .faq-step p a,
  .page-faq .faq-assist-card-note a {
    transition: none;
  }
}