.page-faq {
  --faq-rail: 236px;
  --faq-line: rgba(255, 90, 31, 0.26);
  display: block;
  background: var(--navy-deep);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 5vw, 44px) 0 clamp(44px, 7vw, 76px);
  background:
    radial-gradient(120% 90% at 12% 0%, var(--indigo) 0%, rgba(20, 48, 107, 0) 68%),
    linear-gradient(158deg, var(--navy) 0%, var(--navy-deep) 70%);
  color: var(--cloud);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -14%;
  bottom: -34%;
  width: min(720px, 86vw);
  height: min(540px, 62vw);
  background: linear-gradient(140deg, var(--flame) 0%, var(--flame-soft) 52%, rgba(255, 90, 31, 0) 100%);
  clip-path: polygon(42% 0, 100% 0, 100% 100%, 0 100%);
  opacity: 0.82;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 2;
}

.page-faq .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(20px, 4vw, 34px);
  font-size: 13px;
  color: rgba(247, 244, 239, 0.72);
}

.page-faq .breadcrumbs a {
  color: rgba(247, 244, 239, 0.9);
  text-decoration: none;
  border-bottom: 1px solid rgba(247, 244, 239, 0.32);
}

.page-faq .breadcrumbs a:hover,
.page-faq .breadcrumbs a:focus-visible {
  color: var(--flame);
  border-bottom-color: var(--flame);
}

.page-faq .eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-faq h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 5.4vw, 62px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  max-width: 20ch;
}

.page-faq .lede {
  margin: clamp(18px, 3vw, 26px) 0 0;
  max-width: 62ch;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.85;
  color: rgba(247, 244, 239, 0.88);
}

/* 场景入口卡 */
.page-faq .faq-scenes {
  display: grid;
  gap: 14px;
  margin-top: clamp(28px, 5vw, 46px);
}

.page-faq .scene-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 22px;
  border-radius: var(--radius-card);
  border: 1px solid var(--glass-line);
  background: var(--glass);
  color: var(--cloud);
  text-decoration: none;
  transition: transform 220ms var(--ease), border-color 220ms var(--ease), background 220ms var(--ease);
}

.page-faq .scene-card:hover,
.page-faq .scene-card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--flame);
  background: rgba(255, 90, 31, 0.14);
}

.page-faq .scene-card--wide {
  background: rgba(11, 27, 58, 0.74);
  border-color: rgba(255, 90, 31, 0.48);
}

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

.page-faq .scene-card__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.2vw, 23px);
  line-height: 1.3;
}

.page-faq .scene-card__note {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(247, 244, 239, 0.78);
}

.page-faq .faq-hero__figure {
  margin: clamp(30px, 5vw, 52px) 0 0;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: var(--radius-card);
  border: 1px solid var(--glass-line);
  object-fit: cover;
  aspect-ratio: 7 / 4;
}

/* ---------- 主体 ---------- */
.page-faq .faq-main {
  background: var(--cloud);
  color: var(--graphite);
  padding: clamp(38px, 6vw, 68px) 0 clamp(56px, 8vw, 96px);
}

.page-faq .faq-layout {
  display: grid;
  gap: clamp(22px, 4vw, 48px);
}

/* 锚点导航 */
.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--sky-deep);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(11, 27, 58, 0.14);
  background: rgba(255, 255, 255, 0.7);
  color: var(--navy);
  font-size: 14px;
  white-space: nowrap;
  text-decoration: none;
  transition: background 180ms var(--ease), border-color 180ms var(--ease), color 180ms var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  background: rgba(255, 90, 31, 0.12);
  border-color: var(--flame);
  color: var(--navy);
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--flame);
}

/* 分组 */
.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-offset) + 16px);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(34px, 5vw, 60px);
  padding-top: clamp(26px, 4vw, 44px);
  border-top: 1px solid var(--hairline);
}

.page-faq .faq-group__head {
  margin-bottom: clamp(16px, 3vw, 24px);
}

.page-faq .faq-group__index {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--sky-deep);
}

.page-faq .faq-group__index::after {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--flame);
}

.page-faq .faq-group__head h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 3.4vw, 38px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--navy);
}

.page-faq .faq-group__note {
  margin: 10px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(42, 47, 58, 0.78);
}

.page-faq .faq-group:target .faq-group__head h2 {
  color: var(--flame);
}

/* 问答条目 */
.page-faq .faq-item {
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-item:last-of-type {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-item > summary {
  position: relative;
  display: block;
  padding: 19px 46px 19px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(16px, 2vw, 19px);
  line-height: 1.55;
  color: var(--navy);
  transition: color 180ms var(--ease);
}

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

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

.page-faq .faq-item > summary:hover {
  color: var(--sky-deep);
}

.page-faq .faq-item > summary::after {
  content: "+";
  position: absolute;
  top: 16px;
  right: 10px;
  font-family: var(--font-mono);
  font-size: 24px;
  line-height: 1;
  color: var(--flame);
  transition: transform 220ms var(--ease);
}

.page-faq .faq-item[open] > summary::after {
  transform: rotate(45deg);
}

.page-faq .faq-item > summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 15px;
  bottom: 15px;
  width: 3px;
  border-radius: 2px;
  background: var(--flame);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 240ms var(--ease);
}

.page-faq .faq-item[open] > summary::before {
  transform: scaleY(1);
}

.page-faq .faq-item__body {
  padding: 0 26px 22px 18px;
}

.page-faq .faq-item__body p {
  margin: 0 0 12px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--graphite);
}

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

.page-faq .text-link {
  color: var(--sky-deep);
  text-decoration: none;
  border-bottom: 1px solid rgba(17, 112, 196, 0.4);
}

.page-faq .text-link:hover,
.page-faq .text-link:focus-visible {
  color: var(--flame);
  border-bottom-color: var(--flame);
}

/* 刷新节奏刻度 */
.page-faq .tickline {
  margin: clamp(20px, 3vw, 30px) 0 0;
}

.page-faq .tickline__bar {
  position: relative;
  height: 7px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--flame) 0%, var(--gold) 48%, var(--sky) 100%);
}

.page-faq .tickline__bar::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -7px;
  height: 21px;
  background-image: repeating-linear-gradient(to right, rgba(11, 27, 58, 0.32) 0 1px, transparent 1px 42px);
  pointer-events: none;
}

.page-faq .tickline__legend {
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .tickline__legend li {
  display: flex;
  flex-direction: column;
  gap: 3px;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(42, 47, 58, 0.8);
}

.page-faq .tickline__legend .num {
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  color: var(--navy);
  font-variant-numeric: tabular-nums;
}

/* 配图 */
.page-faq .faq-figure {
  margin: clamp(24px, 4vw, 34px) 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: var(--radius-card);
  border: 1px solid rgba(11, 27, 58, 0.1);
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(42, 47, 58, 0.65);
}

/* 支持区块 */
.page-faq .support-card {
  padding: clamp(22px, 3.4vw, 34px);
  border-radius: var(--radius-card);
  border: 1px solid rgba(11, 27, 58, 0.1);
  background: #fff;
  box-shadow: var(--shadow-1);
}

.page-faq .support-card p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--graphite);
}

.page-faq .support-list {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-faq .support-list li {
  padding-left: 16px;
  position: relative;
  font-size: 15px;
  line-height: 1.75;
  color: var(--graphite);
}

.page-faq .support-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--jade);
}

.page-faq .support-list strong {
  color: var(--navy);
  font-weight: 700;
}

.page-faq .support-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.page-faq .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 24px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 220ms var(--ease), background 180ms var(--ease), border-color 180ms var(--ease), color 180ms var(--ease);
}

.page-faq .btn--flame {
  background: var(--flame);
  color: var(--navy);
  border: 1px solid var(--flame);
}

.page-faq .btn--oncloud {
  background: transparent;
  color: var(--navy);
  border: 1px solid rgba(11, 27, 58, 0.24);
}

.page-faq .btn--flame:hover,
.page-faq .btn--flame:focus-visible {
  background: var(--flame-soft);
  border-color: var(--flame-soft);
  transform: translateY(-2px);
}

.page-faq .btn--oncloud:hover,
.page-faq .btn--oncloud:focus-visible {
  border-color: var(--flame);
  color: var(--flame);
  transform: translateY(-2px);
}

/* 轻量显现 */
.page-faq [data-reveal] {
  transform: translateY(10px);
  transition: transform 460ms var(--ease);
}

.page-faq [data-reveal].is-visible {
  transform: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-scenes {
    grid-template-columns: 1fr 1.32fr 1fr;
    align-items: stretch;
  }

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

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-offset) + 14px);
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__link {
    border-color: transparent;
    background: transparent;
    border-radius: 10px;
    padding: 9px 12px;
    white-space: normal;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    background: rgba(255, 90, 31, 0.1);
    border-color: rgba(255, 90, 31, 0.42);
  }
}

@media (min-width: 1060px) {
  .page-faq .faq-group--split {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: clamp(28px, 3.6vw, 48px);
    align-items: start;
  }

  .page-faq .faq-group--split .faq-figure {
    position: sticky;
    top: calc(var(--header-offset) + 24px);
    margin-top: 4px;
  }

  .page-faq .faq-item > summary {
    padding: 22px 52px 22px 22px;
  }

  .page-faq .faq-item__body {
    padding: 0 52px 24px 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .scene-card,
  .page-faq .faq-item > summary::after,
  .page-faq .faq-item > summary::before,
  .page-faq .btn,
  .page-faq [data-reveal] {
    transition: none !important;
    transform: none !important;
  }
}