.page-faq {
  --faq-on-paper: #232A31;
  --faq-on-paper-soft: #525C67;
  --faq-edge: clamp(14px, 2.4vw, 26px);
  background: var(--ink);
  color: var(--veil);
}

.page-faq h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 0.35em 0 0.5em;
}

.page-faq .faq-h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(18px, 2.4vw, 22px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 0 0 16px;
}

.page-faq .section--paper h2,
.page-faq .section--paper .faq-h3,
.page-faq .section--paper h3 {
  color: var(--faq-on-paper);
}

.page-faq .section--paper p,
.page-faq .section--paper li {
  color: var(--faq-on-paper-soft);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(26px, 5vw, 62px) 0 clamp(34px, 6vw, 78px);
  background:
    radial-gradient(120% 88% at 90% -4%, rgba(255, 107, 26, 0.3), transparent 58%),
    radial-gradient(88% 72% at 4% 64%, rgba(0, 229, 255, 0.14), transparent 62%),
    linear-gradient(180deg, var(--ink-deep), var(--ink));
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--flame), var(--amber) 42%, var(--cyan));
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 5vw, 46px);
}

.page-faq .faq-hero__lede h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6.6vw, 60px);
  line-height: 1.04;
  letter-spacing: -0.025em;
  color: var(--paper);
  margin: 16px 0 20px;
  transform: skew(-6deg);
  transform-origin: left bottom;
}

.page-faq .faq-hero__lede p {
  max-width: 48ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.88;
  color: var(--veil);
  margin: 0;
}

.page-faq .faq-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 26px 0 0;
}

.page-faq .faq-hero__chips {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  font-size: 13px;
  color: var(--veil-dim);
}

.page-faq .faq-hero__chips li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .faq-hero__chips .mono {
  color: var(--cyan);
  font-size: 13px;
}

.page-faq .faq-hero__shot {
  border: 1px solid var(--line);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.48);
}

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

/* 快速开始 */
.page-faq .faq-start__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
}

.page-faq .faq-start__grid > * {
  min-width: 0;
}

.page-faq .faq-start__h2 {
  font-size: clamp(22px, 3vw, 30px);
}

.page-faq .faq-start__note {
  font-size: 15px;
  line-height: 1.85;
  color: var(--veil-dim);
  margin: 0 0 22px;
}

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

.page-faq .faq-index a {
  display: block;
  padding: 11px 12px 11px 16px;
  border-left: 2px solid var(--line);
  color: var(--veil);
  font-size: 14px;
  line-height: 1.6;
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  color: var(--cyan);
  border-left-color: var(--flame);
  background: rgba(0, 229, 255, 0.06);
}

/* 步骤 */
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: faqstep;
  display: grid;
  gap: 12px;
}

.page-faq .faq-steps li {
  counter-increment: faqstep;
  position: relative;
  padding: 16px 20px 16px 66px;
  background: var(--ink-soft);
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--flame);
  color: var(--veil);
  font-size: 15px;
  line-height: 1.8;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 20px;
  top: 18px;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-faq .faq-steps li:hover {
  border-left-color: var(--amber);
  background: var(--void);
}

.page-faq .faq-steps--paper li {
  background: rgba(255, 255, 255, 0.74);
  border-color: rgba(58, 66, 76, 0.24);
  color: var(--faq-on-paper);
}

.page-faq .faq-steps--paper li::before {
  color: var(--clay);
}

.page-faq .faq-steps--paper li:hover {
  background: #fff;
  border-left-color: var(--flame);
}

.page-faq .faq-tip {
  margin: 20px 0 0;
  padding: 14px 18px;
  border-left: 2px solid var(--moss-lit);
  background: rgba(79, 107, 82, 0.14);
  font-size: 14px;
  line-height: 1.8;
  color: var(--veil);
}

.page-faq .faq-tip--paper {
  background: rgba(79, 107, 82, 0.12);
  color: var(--faq-on-paper-soft);
}

/* 缓存 */
.page-faq .faq-cache__head {
  max-width: 62ch;
}

.page-faq .faq-cache__head p {
  margin: 0 0 26px;
}

.page-faq .faq-cache__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 46px);
}

.page-faq .faq-cache__grid > * {
  min-width: 0;
}

.page-faq .faq-cache__shot {
  align-self: start;
  border: 1px solid rgba(58, 66, 76, 0.3);
}

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

/* 更新记录 */
.page-faq .faq-log__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
}

.page-faq .faq-log__grid > * {
  min-width: 0;
}

.page-faq .faq-dims {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-dims li {
  padding: 12px 14px;
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--moss);
  background: var(--ink-soft);
  font-size: 14px;
  line-height: 1.75;
  color: var(--veil);
}

.page-faq .faq-dims .mono {
  display: inline-block;
  min-width: 78px;
  color: var(--cyan);
  font-size: 12px;
}

.page-faq .faq-log__count {
  font-size: 14px;
  line-height: 1.8;
  color: var(--veil-dim);
  margin: 0;
}

.page-faq .faq-log__count .stat {
  font-family: var(--font-mono);
  font-size: 22px;
  color: var(--amber);
  margin-right: 2px;
}

.page-faq .faq-term {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--ink-soft), var(--ink-deep));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
  overflow: hidden;
}

.page-faq .faq-term__bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 15px;
  border-bottom: 1px solid var(--line);
  background: rgba(58, 66, 76, 0.32);
}

.page-faq .faq-term__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--rock);
}

.page-faq .faq-term__dot--flame {
  background: var(--flame);
}

.page-faq .faq-term__dot--cyan {
  background: var(--cyan);
}

.page-faq .faq-term__title {
  margin-left: auto;
  font-size: 12px;
  color: var(--veil-dim);
}

.page-faq .faq-term__body {
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.95;
  color: var(--veil);
}

.page-faq .faq-term__body p {
  margin: 0 0 4px;
}

.page-faq .faq-term__key {
  display: inline-block;
  min-width: 92px;
  color: var(--cyan);
}

.page-faq .faq-h3--log {
  margin-top: 40px;
}

.page-faq .faq-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line-soft);
  background: var(--ink-soft);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-faq .faq-table caption {
  text-align: left;
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--veil-dim);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  text-align: left;
  padding: 13px 16px;
  border-bottom: 1px solid var(--line-soft);
  line-height: 1.7;
  color: var(--veil);
}

.page-faq .faq-table thead th {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--cyan);
  background: rgba(0, 229, 255, 0.05);
}

.page-faq .faq-table tbody th {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 13px;
  color: var(--paper);
}

.page-faq .faq-table tbody tr:hover td,
.page-faq .faq-table tbody tr:hover th {
  background: rgba(255, 107, 26, 0.06);
}

/* 双端时间差 */
.page-faq .faq-dual__lede {
  max-width: 56ch;
  margin: 0 0 26px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--veil-dim);
}

.page-faq .faq-dual__split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .faq-dual__card {
  padding: clamp(22px, 3.6vw, 36px);
}

.page-faq .faq-dual__card h3 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(19px, 2.6vw, 24px);
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 12px 0 14px;
}

.page-faq .faq-dual__card p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--veil);
}

.page-faq .faq-dual__card--fast {
  border-top: 3px solid var(--flame);
  background: linear-gradient(158deg, rgba(255, 107, 26, 0.24), rgba(29, 35, 43, 0.9) 66%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-faq .faq-dual__card--deep {
  border-top: 3px solid var(--cyan);
  background: linear-gradient(202deg, rgba(0, 229, 255, 0.18), rgba(29, 35, 43, 0.92) 68%);
  clip-path: polygon(26px 0, 100% 0, 100% 100%, 0 100%, 0 26px);
}

.page-faq .faq-dual__stamp {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-faq .faq-dual__card--deep .faq-dual__stamp {
  color: var(--cyan);
}

.page-faq .faq-dual__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-dual__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--veil-dim);
}

.page-faq .faq-dual__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 2px;
  background: var(--flame);
}

.page-faq .faq-dual__card--deep .faq-dual__list li::before {
  background: var(--cyan);
}

/* 通知设置 */
.page-faq .faq-notify__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
}

.page-faq .faq-notify__grid > * {
  min-width: 0;
}

.page-faq .faq-notify__intro p {
  font-size: 15px;
  line-height: 1.85;
}

.page-faq .faq-switch {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-faq .faq-switch li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 18px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(58, 66, 76, 0.22);
  border-left: 3px solid var(--moss);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-switch li:hover {
  background: #fff;
  border-left-color: var(--flame);
}

.page-faq .faq-switch__text {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.page-faq .faq-switch__text strong {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  color: var(--faq-on-paper);
}

.page-faq .faq-switch__text span {
  font-size: 13px;
  line-height: 1.7;
  color: var(--faq-on-paper-soft);
}

.page-faq .faq-switch__state {
  flex: none;
  font-size: 11px;
  letter-spacing: 0.08em;
  padding: 4px 9px;
  color: var(--moss);
  border: 1px solid rgba(79, 107, 82, 0.5);
  background: rgba(79, 107, 82, 0.1);
}

/* 故障排查 */
.page-faq .faq-fix__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 34px);
}

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

.page-faq .faq-fix__head p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--veil-dim);
}

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

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

.page-faq .faq-q summary {
  list-style: none;
  cursor: pointer;
  position: relative;
  padding: 20px 46px 20px 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(16px, 2.2vw, 19px);
  letter-spacing: -0.01em;
  line-height: 1.5;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-q summary::after {
  content: "+";
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  color: var(--flame);
}

.page-faq .faq-q summary:hover {
  color: var(--amber);
}

.page-faq .faq-q[open] summary {
  color: var(--flame);
}

.page-faq .faq-q[open] summary::after {
  content: "–";
  color: var(--cyan);
}

.page-faq .faq-q__body {
  padding: 0 0 22px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--veil);
}

.page-faq .faq-q__body ol {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 9px;
}

.page-faq .faq-q__body li::marker {
  font-family: var(--font-mono);
  color: var(--cyan);
}

/* 后续导航 */
.page-faq .faq-next__h2 {
  font-size: clamp(22px, 3vw, 30px);
}

.page-faq .faq-next__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 22px;
}

.page-faq .faq-next__card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  justify-content: flex-end;
  min-height: 148px;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line);
  background: var(--void);
  text-decoration: none;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-next__card:hover,
.page-faq .faq-next__card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--flame);
}

.page-faq .faq-next__card:first-child {
  background: linear-gradient(155deg, rgba(255, 107, 26, 0.26), var(--void) 64%);
}

.page-faq .faq-next__k {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-faq .faq-next__card strong {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(16px, 2.1vw, 19px);
  line-height: 1.45;
  color: var(--paper);
}

.page-faq .faq-next__d {
  font-size: 13px;
  line-height: 1.75;
  color: var(--veil-dim);
}

.page-faq .faq-next__back {
  margin: 26px 0 0;
}

.page-faq .faq-next__back a {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-next__back a:hover {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

/* 中屏 */
@media (min-width: 720px) {
  .page-faq .faq-next__grid {
    grid-template-columns: 1.4fr 1fr;
    align-items: stretch;
  }

  .page-faq .faq-next__card:first-child {
    grid-row: span 2;
    min-height: 100%;
  }
}

/* 桌面 */
@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
    gap: clamp(30px, 4vw, 64px);
  }

  .page-faq .faq-start__grid {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 60px);
  }

  .page-faq .faq-start__side {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-cache__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: start;
  }

  .page-faq .faq-log__grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: start;
  }

  .page-faq .faq-dual__split {
    grid-template-columns: 1fr 1fr;
    gap: 0;
  }

  .page-faq .faq-notify__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
  }

  .page-faq .faq-fix__grid {
    grid-template-columns: 300px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-fix__head {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-next__grid {
    grid-template-columns: 1.5fr 1fr 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-next__card,
  .page-faq .faq-index a,
  .page-faq .faq-steps li,
  .page-faq .faq-q summary {
    transition: none;
  }

  .page-faq .faq-next__card:hover,
  .page-faq .faq-next__card:focus-visible {
    transform: none;
  }
}