.page-faq {
  --faq-gap: clamp(16px, 2.4vw, 28px);
  --faq-card: #FFFFFF;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.88;
}

/* ============ 首屏 ============ */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 3.4vw, 36px) 0 clamp(46px, 7vw, 94px);
  background: var(--walnut);
  color: var(--cream);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -18%;
  width: 68%;
  height: 175%;
  background: linear-gradient(158deg, rgba(30, 142, 120, .44), rgba(56, 42, 94, .18) 58%, rgba(216, 154, 46, .10) 100%);
  transform: rotate(-11deg);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(216, 154, 46, .55) 22%, rgba(30, 142, 120, .45) 78%, transparent);
  pointer-events: none;
}

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

.page-faq .faq-hero .breadcrumb {
  margin: 0 0 clamp(24px, 4vw, 46px);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--mist);
}

.page-faq .faq-hero .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

.page-faq .faq-hero .breadcrumb a:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.page-faq .faq-hero .breadcrumb__sep {
  margin: 0 8px;
  color: rgba(199, 180, 154, .55);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-faq .faq-hero .eyebrow {
  color: var(--gold);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(34px, 6.2vw, 60px);
  line-height: 1.12;
  font-weight: 900;
  letter-spacing: -.012em;
  color: var(--cream);
}

.page-faq .faq-hero .lede {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  max-width: 58ch;
  font-size: clamp(17px, 1.4vw, 20px);
  line-height: 1.82;
  color: rgba(242, 230, 210, .86);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 34px);
}

.page-faq .faq-hero .btn--outline {
  border-color: rgba(242, 230, 210, .42);
  color: var(--cream);
  background: transparent;
}

.page-faq .faq-hero .btn--outline:hover,
.page-faq .faq-hero .btn--outline:focus-visible {
  border-color: var(--oasis-bright);
  color: var(--oasis-bright);
  background: rgba(30, 142, 120, .14);
}

.page-faq .faq-hero__aside {
  border-top: 1px solid rgba(242, 230, 210, .2);
  padding-top: 18px;
}

.page-faq .faq-hero__aside-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--mist);
}

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

.page-faq .faq-quick li + li {
  border-top: 1px solid rgba(242, 230, 210, .14);
}

.page-faq .faq-quick a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 2px;
  color: var(--cream);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.6;
  transition: color var(--ease), padding-left var(--ease);
}

.page-faq .faq-quick a:hover,
.page-faq .faq-quick a:focus-visible {
  color: var(--signal);
  padding-left: 8px;
}

/* ============ 主体栅格 ============ */
.page-faq .faq-main {
  padding: clamp(36px, 6vw, 84px) 0 clamp(48px, 7vw, 96px);
  background: var(--cream);
}

.page-faq .faq-layout {
  display: grid;
  gap: clamp(30px, 4vw, 52px);
}

.page-faq .faq-body {
  display: grid;
  gap: clamp(40px, 5.4vw, 76px);
  min-width: 0;
}

/* ============ 粘性目录 ============ */
.page-faq .faq-index {
  min-width: 0;
}

.page-faq .faq-index__label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--muted-on-light);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-light);
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  padding: 11px 0 11px 12px;
  margin-left: -14px;
  border-left: 2px solid transparent;
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.58;
  transition: color var(--ease), border-color var(--ease), background var(--ease), padding-left var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--oasis);
  border-left-color: var(--oasis-bright);
  background: rgba(30, 142, 120, .07);
  padding-left: 16px;
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--gold);
  padding-top: 3px;
}

/* ============ 章节标题 ============ */
.page-faq .faq-section {
  min-width: 0;
}

.page-faq .faq-section__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding-bottom: 16px;
  margin-bottom: clamp(20px, 2.6vw, 30px);
  border-bottom: 1px solid var(--line-light);
}

.page-faq .faq-section__head .sec-num {
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.6vw, 18px);
  color: var(--gold);
  letter-spacing: -.01em;
}

.page-faq .faq-section__head h2 {
  margin: 0;
  font-size: clamp(23px, 3.2vw, 36px);
  line-height: 1.26;
  font-weight: 800;
  letter-spacing: -.006em;
  color: var(--ink);
}

.page-faq .faq-section__intro {
  margin: 0 0 clamp(20px, 2.8vw, 30px);
  max-width: 62ch;
  font-size: 17px;
  line-height: 1.88;
  color: var(--muted-on-light);
}

/* ============ 步骤卡片 ============ */
.page-faq .step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  min-width: 0;
}

.page-faq .step-card {
  position: relative;
  padding: 18px 18px 18px 62px;
  background: var(--faq-card);
  border: 1px solid var(--line-light);
  border-radius: var(--radius);
  box-shadow: 0 10px 24px -22px rgba(42, 26, 18, .8);
  transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
}

.page-faq .step-card:hover {
  transform: translateY(-2px);
  border-color: rgba(30, 142, 120, .42);
  box-shadow: 0 18px 34px -24px rgba(42, 26, 18, .85);
}

.page-faq .step-card__num {
  position: absolute;
  top: 16px;
  left: 16px;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--signal);
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  transition: box-shadow var(--ease);
}

.page-faq .step-card:hover .step-card__num {
  box-shadow: 0 0 0 5px rgba(255, 106, 43, .16);
}

.page-faq .step-card:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 30px;
  top: 50px;
  bottom: -14px;
  border-left: 1px dashed rgba(30, 142, 120, .55);
  pointer-events: none;
}

.page-faq .step-card__body h3 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .step-card__body p {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted-on-light);
}

/* ============ 图文并排 ============ */
.page-faq .faq-split {
  display: grid;
  gap: clamp(22px, 3vw, 34px);
  min-width: 0;
}

.page-faq .faq-shot {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-shot img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line-light);
  border-radius: var(--radius);
  background: var(--walnut-2);
  object-fit: cover;
}

.page-faq .faq-shot--tall img {
  aspect-ratio: 2 / 3;
}

.page-faq .faq-shot--wide img {
  aspect-ratio: 3 / 2;
}

.page-faq .faq-shot figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted-on-light);
}

/* ============ 数据读法 ============ */
.page-faq .faq-data-grid {
  display: grid;
  gap: clamp(18px, 2.6vw, 26px);
  min-width: 0;
}

.page-faq .faq-data-card {
  padding: clamp(20px, 2.6vw, 32px);
  background: var(--walnut-2);
  border: 1px solid rgba(242, 230, 210, .14);
  border-radius: var(--radius);
  box-shadow: var(--shadow-panel);
  transition: transform var(--ease), box-shadow var(--ease);
}

.page-faq .faq-data-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-panel-hover);
}

.page-faq .faq-data-card h3 {
  margin: 0 0 12px;
  font-size: 19px;
  font-weight: 800;
  line-height: 1.45;
  color: var(--gold);
}

.page-faq .faq-data-card p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(242, 230, 210, .84);
}

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

.page-faq .zone-list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.page-faq .zone-list li {
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding: 9px 10px;
  background: rgba(23, 17, 12, .38);
  border: 1px solid rgba(242, 230, 210, .18);
  border-left: 2px solid var(--signal);
  border-radius: var(--radius);
}

.page-faq .zone-list__time {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: -.01em;
  color: var(--cream);
}

.page-faq .zone-list__unit {
  font-size: 12px;
  color: var(--mist);
}

/* ============ 排查清单 ============ */
.page-faq .faq-section__head--wine {
  border-bottom-color: rgba(107, 34, 51, .38);
}

.page-faq .faq-section__head--wine .sec-num {
  color: var(--wine);
}

.page-faq .trouble-list {
  display: grid;
  gap: 12px;
  min-width: 0;
}

.page-faq .trouble-item {
  background: var(--faq-card);
  border: 1px solid var(--line-light);
  border-left: 3px solid var(--wine);
  border-radius: var(--radius);
  transition: box-shadow var(--ease), border-color var(--ease);
}

.page-faq .trouble-item:hover {
  border-color: rgba(107, 34, 51, .42);
}

.page-faq .trouble-item[open] {
  box-shadow: 0 18px 34px -28px rgba(42, 26, 18, .9);
}

.page-faq .trouble-item__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink);
  transition: color var(--ease);
}

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

.page-faq .trouble-item__summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--wine);
}

.page-faq .trouble-item[open] .trouble-item__summary {
  color: var(--wine);
}

.page-faq .trouble-item[open] .trouble-item__summary::after {
  content: "–";
}

.page-faq .trouble-item__summary:hover {
  color: var(--wine);
}

.page-faq .trouble-item__panel {
  padding: 0 18px 18px;
}

.page-faq .trouble-steps {
  list-style: none;
  counter-reset: tstep;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .trouble-steps li {
  position: relative;
  counter-increment: tstep;
  padding-left: 30px;
  font-size: 15px;
  line-height: 1.82;
  color: var(--muted-on-light);
}

.page-faq .trouble-steps li::before {
  content: counter(tstep);
  position: absolute;
  left: 0;
  top: 5px;
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  border: 1px solid var(--wine);
  border-radius: 50%;
  color: var(--wine);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1;
}

/* ============ 求助区 ============ */
.page-faq .faq-section--help {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 3.4vw, 42px);
  background: var(--indigo);
  border-radius: var(--radius);
  color: var(--cream);
}

.page-faq .faq-section--help::before {
  content: "";
  position: absolute;
  right: -14%;
  top: -46%;
  width: 54%;
  height: 190%;
  background: linear-gradient(160deg, rgba(30, 142, 120, .3), transparent 72%);
  transform: rotate(-10deg);
  pointer-events: none;
}

.page-faq .faq-section--help > * {
  position: relative;
}

.page-faq .faq-section--help .faq-section__head {
  border-bottom-color: rgba(242, 230, 210, .22);
}

.page-faq .faq-section--help .sec-num {
  color: var(--gold);
}

.page-faq .faq-section--help h2 {
  color: var(--cream);
}

.page-faq .faq-section--help .faq-section__intro {
  color: rgba(242, 230, 210, .86);
}

.page-faq .help-list {
  list-style: none;
  margin: 0 0 clamp(18px, 2.4vw, 26px);
  padding: 0;
  border-top: 1px solid rgba(242, 230, 210, .2);
}

.page-faq .help-list li {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(242, 230, 210, .14);
}

.page-faq .help-list__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--signal);
}

.page-faq .help-list__val {
  font-size: 15px;
  line-height: 1.82;
  color: rgba(242, 230, 210, .88);
}

.page-faq .faq-section--help .faq-section__note {
  margin: 0 0 22px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

/* ============ 响应式 ============ */
@media (min-width: 560px) {
  .page-faq .zone-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-faq .help-list li {
    grid-template-columns: 130px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, .9fr);
    align-items: start;
  }

  .page-faq .faq-split--reverse {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  }
}

@media (min-width: 940px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(240px, .85fr);
    align-items: end;
  }

  .page-faq .faq-hero h1 {
    font-size: clamp(44px, 4.8vw, 76px);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 250px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

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

@media (max-width: 640px) {
  .page-faq .step-card {
    padding: 16px 16px 16px 56px;
  }

  .page-faq .step-card__num {
    top: 14px;
    left: 14px;
    width: 28px;
    height: 28px;
    font-size: 13px;
  }

  .page-faq .step-card:not(:last-child)::after {
    left: 27px;
    top: 46px;
  }

  .page-faq .faq-index__list {
    border-top: none;
  }

  .page-faq .faq-index__link {
    margin-left: 0;
    padding-left: 10px;
    border-left: 1px solid rgba(30, 142, 120, .35);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .step-card,
  .page-faq .step-card__num,
  .page-faq .faq-data-card,
  .page-faq .faq-index__link,
  .page-faq .faq-quick a,
  .page-faq .trouble-item {
    transition-duration: .01ms;
  }

  .page-faq .step-card:hover,
  .page-faq .faq-data-card:hover {
    transform: none;
  }
}