.page-faq {
  --faq-ink-soft: #3D4A50;
  --faq-link: #116E78;
  --faq-copper-line: rgba(169, 102, 43, .38);
  --faq-warm-wash: rgba(224, 172, 99, .12);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: clamp(28px, 5vw, 56px) clamp(44px, 7vw, 92px);
  background:
    radial-gradient(115% 85% at 86% 6%, rgba(122, 92, 255, .22), transparent 58%),
    linear-gradient(158deg, #2A1A0F 0%, #1E2A31 58%, #26333A 100%);
  color: var(--ky-paper);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(224, 172, 99, .09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(224, 172, 99, .09) 1px, transparent 1px);
  background-size: 72px 72px, 72px 72px;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: clamp(30px, 5vw, 56px);
  background: var(--ky-paper);
  clip-path: polygon(0 100%, 0 64%, 7% 42%, 15% 60%, 23% 28%, 32% 54%, 41% 20%, 51% 48%, 60% 26%, 69% 56%, 78% 34%, 87% 62%, 94% 44%, 100% 66%, 100% 100%);
  pointer-events: none;
}

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

.page-faq .faq-hero__crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(24px, 4vw, 48px);
  font-size: 12px;
  letter-spacing: .08em;
}

.page-faq .faq-hero__crumb .ky-breadcrumb__item {
  color: rgba(246, 241, 231, .64);
}

.page-faq .faq-hero__crumb a.ky-breadcrumb__item {
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ky-ease), border-color .18s var(--ky-ease);
}

.page-faq .faq-hero__crumb a.ky-breadcrumb__item:hover,
.page-faq .faq-hero__crumb a.ky-breadcrumb__item:focus-visible {
  color: var(--ky-copper-300);
  border-bottom-color: var(--ky-copper-300);
}

.page-faq .faq-crumb-sep {
  color: rgba(224, 172, 99, .6);
  font-family: var(--ky-font-mono);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 4vw, 56px);
  align-items: end;
}

.page-faq .faq-hero__eyebrow {
  color: var(--ky-copper-300);
  font-family: var(--ky-font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  margin: 0 0 clamp(12px, 2vw, 20px);
}

.page-faq .faq-hero__title {
  margin: 0;
  color: var(--ky-paper);
  font-weight: 300;
  letter-spacing: -.02em;
  text-wrap: balance;
}

.page-faq .faq-hero__lede {
  margin: clamp(18px, 2.4vw, 28px) 0 0;
  max-width: 46ch;
  color: rgba(246, 241, 231, .78);
  font-size: clamp(15px, 1.02vw, 17px);
  line-height: 1.9;
}

.page-faq .faq-index {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  gap: 1px;
  margin-top: clamp(26px, 4vw, 44px);
  border: 1px solid rgba(224, 172, 99, .24);
  background: rgba(224, 172, 99, .18);
}

.page-faq .faq-index__item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 14px 16px;
  background: rgba(30, 22, 16, .72);
  color: var(--ky-paper);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: background-color .18s var(--ky-ease), border-color .18s var(--ky-ease);
}

.page-faq .faq-index__item:hover,
.page-faq .faq-index__item:focus-visible {
  background: rgba(169, 102, 43, .3);
  border-left-color: var(--ky-neon-cyan);
}

.page-faq .faq-index__num {
  font-family: var(--ky-font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--ky-copper-300);
}

.page-faq .faq-index__label {
  font-size: 14px;
  line-height: 1.5;
}

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

.page-faq .faq-hero__figure .ky-figure__media {
  border: 1px solid rgba(224, 172, 99, .34);
}

.page-faq .faq-hero__figure .ky-figure__caption {
  color: rgba(246, 241, 231, .56);
  font-size: 12px;
  letter-spacing: .06em;
  padding-top: 12px;
}

/* ---------- 01 现象问答 ---------- */

.page-faq .faq-symptoms {
  padding-block: clamp(48px, 7vw, 96px);
  background: var(--ky-paper);
}

.page-faq .faq-symptoms__lede {
  max-width: 62ch;
}

.page-faq .faq-symptom-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.4vw, 26px);
  margin-top: clamp(28px, 4vw, 48px);
}

.page-faq .faq-symptom {
  padding: clamp(18px, 2.4vw, 26px) clamp(16px, 2.2vw, 24px) clamp(6px, 1.4vw, 12px);
  background: var(--ky-paper-raised);
  border: 1px solid var(--ky-line);
  border-top: 2px solid var(--ky-copper-600);
}

.page-faq .faq-symptom__head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--ky-line);
}

.page-faq .faq-symptom__lamp {
  flex: 0 0 auto;
}

.page-faq .faq-symptom[data-state="stop"] .faq-symptom__lamp {
  color: var(--ky-signal-stop);
}

.page-faq .faq-symptom[data-state="warn"] .faq-symptom__lamp {
  color: var(--ky-signal-warn);
}

.page-faq .faq-symptom[data-state="ok"] .faq-symptom__lamp {
  color: var(--ky-signal-ok);
}

.page-faq .faq-symptom__title {
  flex: 1 1 auto;
  margin: 0;
  font-family: var(--ky-font-display);
  font-weight: 500;
  font-size: clamp(17px, 1.6vw, 21px);
  letter-spacing: .01em;
  color: var(--ky-karst-800);
}

/* 展开式问答 */

.page-faq .faq-qa {
  border-bottom: 1px solid var(--ky-line);
}

.page-faq .faq-qa:last-child {
  border-bottom: 0;
}

.page-faq .faq-qa__q {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 14px 2px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(14px, 1.03vw, 16px);
  line-height: 1.7;
  color: var(--ky-ink);
  transition: color .18s var(--ky-ease);
}

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

.page-faq .faq-qa__q::before {
  content: "+";
  flex: 0 0 auto;
  width: 1em;
  font-family: var(--ky-font-mono);
  font-size: 15px;
  color: var(--ky-copper-600);
}

.page-faq .faq-qa[open] .faq-qa__q::before {
  content: "\2212";
}

.page-faq .faq-qa__q:hover,
.page-faq .faq-qa__q:focus-visible {
  color: var(--ky-copper-600);
}

.page-faq .faq-qa__a {
  padding: 0 2px 18px 26px;
  font-size: clamp(14px, .98vw, 15.5px);
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

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

/* ---------- 02 九步时间轴 ---------- */

.page-faq .faq-timeline-section {
  padding-block: clamp(48px, 7vw, 96px);
  background: var(--ky-karst-100);
}

.page-faq .faq-timeline__lede {
  max-width: 58ch;
}

.page-faq .faq-timeline__figure {
  margin: clamp(26px, 4vw, 44px) 0 0;
}

.page-faq .faq-timeline__figure .ky-figure__media {
  border: 1px solid var(--ky-line-strong);
}

.page-faq .faq-timeline__figure .ky-figure__caption {
  padding-top: 10px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ky-karst-400);
}

.page-faq .faq-timeline {
  margin-top: clamp(26px, 4vw, 46px);
  border-top: 1px dashed rgba(31, 182, 196, .38);
}

.page-faq .faq-step {
  border-bottom: 1px dashed rgba(31, 182, 196, .38);
}

.page-faq .faq-step__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(12px, 2vw, 24px);
  padding: clamp(13px, 1.7vw, 20px) 2px;
  cursor: pointer;
  list-style: none;
  transition: background-color .18s var(--ky-ease);
}

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

.page-faq .faq-step__summary:hover {
  background: rgba(224, 172, 99, .16);
}

.page-faq .faq-step__num {
  font-family: var(--ky-font-mono);
  font-weight: 700;
  font-size: clamp(24px, 3.2vw, 38px);
  line-height: 1;
  letter-spacing: -.04em;
  color: var(--ky-copper-600);
  transition: color .18s var(--ky-ease), -webkit-text-stroke-color .18s var(--ky-ease);
}

@supports (-webkit-text-stroke: 1px red) {
  .page-faq .faq-step__num {
    color: transparent;
    -webkit-text-stroke: 1px rgba(169, 102, 43, .72);
  }

  .page-faq .faq-step[open] .faq-step__num,
  .page-faq .faq-step__summary:hover .faq-step__num {
    color: var(--ky-copper-300);
    -webkit-text-stroke-color: var(--ky-copper-600);
  }
}

.page-faq .faq-step__title {
  font-family: var(--ky-font-display);
  font-weight: 500;
  font-size: clamp(16px, 1.5vw, 20px);
  color: var(--ky-karst-800);
  border-bottom: 1px solid transparent;
  justify-self: start;
  transition: border-color .18s var(--ky-ease), color .18s var(--ky-ease);
}

.page-faq .faq-step[open] .faq-step__title {
  color: var(--ky-copper-600);
  border-bottom-color: var(--ky-neon-cyan);
}

.page-faq .faq-step__mark {
  position: relative;
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
}

.page-faq .faq-step__mark::before,
.page-faq .faq-step__mark::after {
  content: "";
  position: absolute;
  background: var(--ky-copper-600);
  transition: transform .18s var(--ky-ease);
}

.page-faq .faq-step__mark::before {
  left: 0;
  right: 0;
  top: 7px;
  height: 2px;
}

.page-faq .faq-step__mark::after {
  top: 0;
  bottom: 0;
  left: 7px;
  width: 2px;
}

.page-faq .faq-step[open] .faq-step__mark::after {
  transform: scaleY(0);
}

.page-faq .faq-step__body {
  display: grid;
  gap: 10px;
  padding: 0 2px clamp(18px, 2.4vw, 28px) clamp(0px, 4vw, 62px);
}

.page-faq .faq-step__body p {
  margin: 0;
  font-size: clamp(14px, .98vw, 15.5px);
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

.page-faq .faq-step__key {
  display: inline-block;
  min-width: 4.6em;
  margin-right: 8px;
  font-family: var(--ky-font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--ky-copper-600);
}

/* ---------- 03 对照表 ---------- */

.page-faq .faq-matrix {
  padding-block: clamp(48px, 7vw, 96px);
  background: var(--ky-paper);
}

.page-faq .faq-matrix__lede {
  max-width: 60ch;
}

.page-faq .faq-table-wrap {
  margin-top: clamp(26px, 4vw, 42px);
  overflow-x: auto;
  border: 1px solid var(--ky-line-strong);
  background: var(--ky-paper-raised);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: clamp(13.5px, .96vw, 15px);
}

.page-faq .faq-table__caption {
  padding: 14px 16px;
  text-align: left;
  font-family: var(--ky-font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--ky-karst-400);
  border-bottom: 1px solid var(--ky-line);
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  padding: 13px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--ky-line);
}

.page-faq .faq-table thead th {
  font-family: var(--ky-font-mono);
  font-weight: 400;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--ky-copper-600);
  background: var(--faq-warm-wash);
  border-bottom: 2px solid var(--ky-copper-600);
  white-space: nowrap;
}

.page-faq .faq-table tbody th {
  width: 28%;
  font-weight: 500;
  color: var(--ky-karst-800);
}

.page-faq .faq-table tbody td {
  color: var(--faq-ink-soft);
}

.page-faq .faq-table tbody tr {
  transition: background-color .16s var(--ky-ease);
}

.page-faq .faq-table tbody tr:hover {
  background: rgba(31, 182, 196, .09);
}

.page-faq .faq-table tbody tr:hover th {
  color: var(--ky-copper-600);
}

.page-faq .faq-jump {
  display: inline-block;
  margin-left: 8px;
  font-family: var(--ky-font-mono);
  font-size: 12px;
  color: var(--faq-link);
  text-decoration: underline;
  text-underline-offset: 3px;
  white-space: nowrap;
}

.page-faq .faq-jump:hover,
.page-faq .faq-jump:focus-visible {
  color: var(--ky-copper-600);
}

/* ---------- 04 换设备重新登录 ---------- */

.page-faq .faq-relogin {
  position: relative;
  overflow: hidden;
  padding-block: clamp(48px, 7vw, 96px);
  background:
    radial-gradient(90% 70% at 12% 100%, rgba(31, 182, 196, .16), transparent 60%),
    linear-gradient(150deg, #2A1A0F 0%, #1D2A31 68%, #26333A 100%);
  color: var(--ky-paper);
}

.page-faq .faq-relogin .ky-eyebrow {
  color: var(--ky-copper-300);
}

.page-faq .faq-relogin__title {
  color: var(--ky-paper);
  font-weight: 300;
}

.page-faq .faq-relogin__lede {
  max-width: 60ch;
  color: rgba(246, 241, 231, .76);
}

.page-faq .faq-relogin__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.2vw, 24px);
  margin-top: clamp(28px, 4vw, 44px);
}

.page-faq .faq-relogin__card {
  padding: clamp(20px, 2.4vw, 28px);
  border: 1px solid rgba(224, 172, 99, .34);
  background: rgba(246, 241, 231, .05);
}

.page-faq .faq-relogin__label {
  margin: 0 0 14px;
  font-family: var(--ky-font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--ky-copper-300);
}

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

.page-faq .faq-relogin__list li {
  position: relative;
  padding-left: 18px;
  font-size: clamp(14px, .98vw, 15.5px);
  line-height: 1.8;
  color: rgba(246, 241, 231, .84);
}

.page-faq .faq-relogin__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 7px;
  height: 7px;
  border: 1px solid var(--ky-copper-300);
  transform: rotate(45deg);
}

.page-faq .faq-relogin__more {
  margin: clamp(24px, 3vw, 34px) 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(246, 241, 231, .72);
}

.page-faq .faq-relogin__more a {
  color: var(--ky-copper-300);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-relogin__more a:hover,
.page-faq .faq-relogin__more a:focus-visible {
  color: var(--ky-neon-cyan);
}

/* ---------- 05 测试版入口 ---------- */

.page-faq .faq-beta {
  padding-block: clamp(48px, 7vw, 96px);
  background: var(--ky-paper);
}

.page-faq .faq-beta__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
  align-items: start;
}

.page-faq .faq-beta__lede {
  max-width: 44ch;
}

.page-faq .faq-beta__btn {
  margin-top: clamp(18px, 2.4vw, 26px);
}

.page-faq .faq-qa--beta {
  padding-inline: 4px;
}

.page-faq .faq-qa--beta:first-child {
  border-top: 2px solid var(--ky-copper-600);
}

/* ---------- 06 反馈指引 ---------- */

.page-faq .faq-escalate {
  padding-block: clamp(48px, 7vw, 96px);
  background: var(--ky-karst-100);
}

.page-faq .faq-escalate__lede {
  max-width: 56ch;
}

.page-faq .faq-checklist {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.2vw, 24px);
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-checklist__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px clamp(14px, 2vw, 22px);
  align-items: baseline;
  padding: clamp(18px, 2.2vw, 24px) 0 0;
  border-top: 1px solid var(--ky-line-strong);
}

.page-faq .faq-checklist__num {
  grid-row: 1 / span 2;
  font-family: var(--ky-font-mono);
  font-weight: 700;
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1;
  letter-spacing: -.04em;
  color: var(--ky-copper-300);
}

.page-faq .faq-checklist__title {
  margin: 0;
  font-family: var(--ky-font-display);
  font-weight: 500;
  font-size: clamp(16px, 1.5vw, 20px);
  color: var(--ky-karst-800);
}

.page-faq .faq-checklist__text {
  margin: 0;
  font-size: clamp(14px, .98vw, 15.5px);
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

.page-faq .faq-escalate__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-top: clamp(28px, 4vw, 44px);
}

.page-faq .faq-escalate__go {
  text-decoration: none;
}

.page-faq .faq-copy {
  border: 1px solid var(--ky-copper-600);
  background: transparent;
  color: var(--ky-copper-600);
  font-family: var(--ky-font-sans);
  font-size: 14px;
  padding: 12px 20px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: background-color .18s var(--ky-ease), color .18s var(--ky-ease);
}

.page-faq .faq-copy:hover,
.page-faq .faq-copy:focus-visible {
  background: rgba(169, 102, 43, .12);
}

.page-faq .faq-copy__hint {
  font-family: var(--ky-font-mono);
  font-size: 12px;
  color: var(--ky-signal-ok);
}

.page-faq .faq-escalate__note {
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: clamp(16px, 2vw, 22px) 0 0;
  border-top: 1px solid var(--ky-line);
  max-width: 70ch;
  font-size: 14px;
  line-height: 1.9;
  color: var(--faq-ink-soft);
}

.page-faq .faq-escalate__aside {
  margin: 14px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--ky-karst-400);
}

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

.page-faq .faq-escalate__aside a:hover,
.page-faq .faq-escalate__aside a:focus-visible {
  color: var(--ky-copper-600);
}

.page-faq .faq-figure,
.page-faq .ky-figure img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-symptom-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-faq .faq-checklist {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 940px) {
  .page-faq .faq-hero {
    padding-block: clamp(40px, 5vw, 72px) clamp(72px, 7vw, 120px);
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
  }

  .page-faq .faq-beta__grid {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
  }

  .page-faq .faq-timeline__figure {
    margin-top: clamp(32px, 3.6vw, 52px);
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-symptom-list {
    gap: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__item,
  .page-faq .faq-qa__q,
  .page-faq .faq-step__summary,
  .page-faq .faq-step__num,
  .page-faq .faq-step__title,
  .page-faq .faq-step__mark::after,
  .page-faq .faq-table tbody tr,
  .page-faq .faq-copy,
  .page-faq .faq-hero__crumb a.ky-breadcrumb__item {
    transition: none;
  }
}