.page-faq {
  --faq-line: rgba(8, 20, 38, 0.1);
  --faq-line-strong: rgba(91, 63, 166, 0.35);
  --faq-line-dark: rgba(199, 206, 219, 0.24);
  --faq-gap: clamp(18px, 4vw, 36px);
  --faq-text-soft: rgba(244, 246, 251, 0.82);
}

.page-faq img {
  max-width: 100%;
  height: auto;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--navy);
  color: var(--moon);
  padding: clamp(26px, 5vw, 56px) 0 clamp(38px, 7vw, 80px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -18%;
  width: 118%;
  height: 150%;
  background: linear-gradient(140deg, rgba(91, 63, 166, 0.62), rgba(11, 30, 63, 0) 64%);
  transform: skewY(-9deg);
  z-index: -2;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(199, 206, 219, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(199, 206, 219, 0.07) 1px, transparent 1px);
  background-size: 52px 52px;
  pointer-events: none;
  z-index: -1;
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.14;
  font-size: clamp(30px, 6.4vw, 58px);
  color: var(--moon);
  max-width: 18ch;
}

.page-faq .faq-hero__lead {
  margin: 16px 0 0;
  max-width: 48ch;
  font-size: clamp(15px, 1.7vw, 18px);
  line-height: 1.8;
  color: var(--faq-text-soft);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .faq-hero__meta {
  margin: 22px 0 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--silver);
}

.page-faq .faq-hero .eyebrow {
  color: var(--gold);
  margin: 18px 0 0;
}

.page-faq .faq-hero .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-faq .faq-hero .breadcrumb a {
  color: var(--silver);
  text-decoration: none;
}

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

.page-faq .faq-hero .breadcrumb li[aria-current="page"] {
  color: var(--moon);
}

.page-faq .faq-hero .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(199, 206, 219, 0.45);
}

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

.page-faq .faq-hero__figure .media-frame {
  border: 1px solid var(--faq-line-dark);
  background: linear-gradient(160deg, rgba(91, 63, 166, 0.55), rgba(14, 59, 62, 0.75));
  box-shadow: 0 34px 64px -42px rgba(0, 0, 0, 0.85);
}

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

/* ---------- 主体布局 ---------- */
.page-faq .faq-body {
  padding: clamp(28px, 5vw, 64px) 0 clamp(48px, 8vw, 96px);
  background: linear-gradient(180deg, var(--moon), #ffffff 42%);
}

.page-faq .faq-layout {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-main {
  min-width: 0;
}

/* ---------- 左侧目录 ---------- */
.page-faq .faq-toc {
  border-top: 1px solid var(--faq-line);
  padding-top: 14px;
}

.page-faq .faq-toc__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--violet);
}

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

.page-faq .faq-toc__list li {
  flex: 0 0 auto;
}

.page-faq .faq-toc__list a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 15px;
  border: 1px solid var(--faq-line);
  border-radius: 999px;
  font-size: 14px;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-toc__list a:hover {
  color: var(--violet);
  border-color: var(--faq-line-strong);
  background: rgba(91, 63, 166, 0.05);
}

.page-faq .faq-toc__list a:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.page-faq .faq-toc__note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted-ink);
  max-width: 34ch;
}

/* ---------- 分区节奏 ---------- */
.page-faq .faq-block {
  scroll-margin-top: 96px;
}

.page-faq .faq-block + .faq-block {
  margin-top: clamp(40px, 7vw, 82px);
}

.page-faq .faq-block__head h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.26;
  font-size: clamp(23px, 3.4vw, 34px);
  color: var(--ink);
}

.page-faq .faq-block__lead {
  margin: 12px 0 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted-ink);
}

/* ---------- 主题索引 ---------- */
.page-faq .faq-cats {
  list-style: none;
  margin: clamp(20px, 4vw, 32px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-cat {
  padding: 16px 0 18px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-cat__num {
  display: block;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-faq .faq-cat h3 {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.page-faq .faq-cat p {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted-ink);
}

/* ---------- 登录三步 ---------- */
.page-faq .faq-steps-wrap {
  display: grid;
  gap: clamp(22px, 4vw, 36px);
  margin-top: clamp(20px, 4vw, 32px);
}

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

.page-faq .faq-step {
  position: relative;
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 14px;
  padding-bottom: 26px;
}

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

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 22px;
  top: 46px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(to bottom, var(--faq-line-strong), rgba(91, 63, 166, 0));
}

.page-faq .faq-step:last-child::before {
  display: none;
}

.page-faq .faq-step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--faq-line-strong);
  background: rgba(91, 63, 166, 0.07);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--violet);
  position: relative;
  z-index: 1;
}

.page-faq .faq-step__body h3 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.page-faq .faq-step__body p {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted-ink);
}

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

.page-faq .faq-steps__figure .media-frame {
  border: 1px solid var(--faq-line);
  background: linear-gradient(180deg, rgba(22, 58, 95, 0.14), rgba(91, 63, 166, 0.18));
  box-shadow: var(--shadow-soft);
}

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

/* ---------- 入口与换机 ---------- */
.page-faq .faq-scenes {
  margin-top: clamp(20px, 4vw, 32px);
}

.page-faq .faq-scene {
  border: 1px solid var(--faq-line);
  border-left: 3px solid var(--mist);
  background: var(--moon);
  border-radius: var(--radius);
  box-shadow: none;
  padding: 20px 18px 22px;
}

.page-faq .faq-scene h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.page-faq .faq-scene p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted-ink);
}

.page-faq .faq-aside-link {
  margin: 20px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted-ink);
}

.page-faq .faq-aside-link a,
.page-faq .faq-contact__foot a,
.page-faq .faq-item__body a {
  color: var(--violet);
  text-decoration: none;
  border-bottom: 1px solid var(--faq-line-strong);
}

.page-faq .faq-aside-link a:hover,
.page-faq .faq-contact__foot a:hover,
.page-faq .faq-item__body a:hover {
  color: var(--mist);
}

.page-faq .faq-aside-link a:focus-visible,
.page-faq .faq-contact__foot a:focus-visible,
.page-faq .faq-item__body a:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

/* ---------- 常见问题折叠 ---------- */
.page-faq .faq-groups {
  margin-top: clamp(20px, 4vw, 32px);
  display: grid;
  gap: clamp(26px, 4vw, 42px);
}

.page-faq .faq-group__title {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--violet);
}

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

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

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  min-height: 52px;
  padding: 15px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
  transition: color 0.2s var(--ease);
}

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

.page-faq .faq-item summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.4;
  color: var(--violet);
}

.page-faq .faq-item[open] summary::after {
  content: "−";
}

.page-faq .faq-item summary:hover {
  color: var(--violet);
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

.page-faq .faq-item__body {
  padding: 0 0 20px;
}

.page-faq .faq-item__body p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted-ink);
}

/* ---------- 联系之前 ---------- */
.page-faq .faq-contact {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: clamp(22px, 4vw, 36px);
  margin-top: clamp(8px, 2vw, 16px);
  padding: clamp(24px, 5vw, 44px) clamp(20px, 4vw, 40px);
  border-radius: var(--radius);
  background: var(--navy);
  color: var(--moon);
}

.page-faq .faq-contact::before {
  content: "";
  position: absolute;
  top: -40%;
  left: -12%;
  width: 70%;
  height: 120%;
  background: radial-gradient(circle at 30% 30%, rgba(91, 63, 166, 0.55), rgba(11, 30, 63, 0) 68%);
  pointer-events: none;
}

.page-faq .faq-contact__text {
  position: relative;
}

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

.page-faq .faq-contact h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.3;
  font-size: clamp(22px, 3.2vw, 30px);
  color: var(--moon);
}

.page-faq .faq-check {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-check li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--faq-text-soft);
}

.page-faq .faq-check li::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 9px;
  width: 11px;
  height: 6px;
  border-left: 1px solid var(--signal);
  border-bottom: 1px solid var(--signal);
  transform: rotate(-45deg);
}

.page-faq .faq-contact__card {
  position: relative;
  margin: 0;
  padding: 20px 18px;
  border: 1px solid var(--faq-line-dark);
  border-radius: var(--radius);
  background: rgba(244, 246, 251, 0.06);
  display: grid;
  gap: 16px;
}

.page-faq .faq-contact__card div {
  display: grid;
  gap: 4px;
}

.page-faq .faq-contact__card dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--silver);
}

.page-faq .faq-contact__card dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--moon);
  word-break: break-word;
}

.page-faq .faq-contact__foot {
  position: relative;
  grid-column: 1 / -1;
  margin: 4px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--silver);
}

.page-faq .faq-contact__foot a {
  color: var(--gold);
  border-bottom-color: rgba(217, 179, 108, 0.45);
}

.page-faq .faq-contact__foot a:hover {
  color: var(--moon);
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-cats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(24px, 4vw, 44px);
  }

  .page-faq .faq-toc__note {
    max-width: 40ch;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-steps-wrap {
    grid-template-columns: minmax(0, 1fr) 232px;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    align-items: end;
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-hero__figure {
    transform: translateY(12px);
  }

  .page-faq .faq-layout {
    grid-template-columns: 226px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 96px;
    border-top: none;
    border-left: 1px solid var(--faq-line);
    padding: 4px 0 0 18px;
  }

  .page-faq .faq-toc__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding: 0;
  }

  .page-faq .faq-toc__list a {
    justify-content: flex-start;
    min-height: 44px;
    padding: 0 0 0 14px;
    border: none;
    border-radius: 0;
    position: relative;
    font-size: 14.5px;
  }

  .page-faq .faq-toc__list a::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 7px;
    height: 1px;
    background: var(--silver);
  }

  .page-faq .faq-toc__list a:hover {
    background: transparent;
    color: var(--violet);
  }

  .page-faq .faq-toc__list a:hover::before {
    background: var(--signal);
    width: 10px;
  }

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

  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-cats {
    column-gap: clamp(32px, 3vw, 56px);
  }

  .page-faq .faq-steps-wrap {
    grid-template-columns: minmax(0, 1fr) 268px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-toc__list a,
  .page-faq .faq-item summary,
  .page-faq .faq-hero__figure {
    transition: none;
    transform: none;
  }
}