.page-faq {
  --faq-pad: clamp(18px, 3vw, 34px);
  --faq-gap: clamp(14px, 2.2vw, 24px);
  color: var(--ink);
  font-family: var(--font-body);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-intro {
  position: relative;
  padding-top: clamp(24px, 5vw, 58px);
  padding-bottom: clamp(20px, 3.4vw, 40px);
  background:
    radial-gradient(110% 130% at 0% 0%, rgba(255, 58, 69, 0.15), transparent 58%),
    linear-gradient(180deg, rgba(31, 231, 182, 0.07) 0%, transparent 62%);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-intro::before {
  content: "";
  position: absolute;
  top: -78px;
  right: -78px;
  width: 240px;
  height: 240px;
  border: 1px solid var(--line);
  border-radius: 50%;
  opacity: 0.6;
  pointer-events: none;
}

.page-faq .faq-intro::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--red) 0 22%, var(--amber) 22% 46%, var(--teal) 46% 70%, transparent 70%);
  opacity: 0.55;
  pointer-events: none;
}

.page-faq .faq-intro h1 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(28px, 5.6vw, 54px);
  line-height: 1.1;
  letter-spacing: 0.005em;
  margin: 12px 0 0;
  max-width: 20em;
}

.page-faq .faq-intro .lead {
  margin: 16px 0 0;
  max-width: 66ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(18px, 3vw, 28px) 0 0;
  padding: 0;
  list-style: none;
}

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

.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--ink);
  text-decoration: none;
  background: var(--glass-fill);
  border: 1px solid var(--line);
  border-radius: 999px;
  backdrop-filter: blur(6px);
  transition: border-color 0.16s ease, color 0.16s ease, background-color 0.16s ease;
}

.page-faq .faq-jump__link::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 3px rgba(31, 231, 182, 0.16);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  color: var(--teal);
  border-color: var(--teal);
  background: rgba(31, 231, 182, 0.08);
}

/* ---------- 主体堆叠 ---------- */
.page-faq .faq-body {
  display: flex;
  flex-direction: column;
  gap: var(--stack-gap);
  padding-top: clamp(22px, 4vw, 46px);
  padding-bottom: clamp(28px, 5vw, 64px);
}

.page-faq .faq-group {
  position: relative;
  overflow: hidden;
  padding: var(--faq-pad);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  scroll-margin-top: calc(var(--strip-h) + 18px);
}

.page-faq .faq-group::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 3px;
  background: linear-gradient(180deg, var(--group-accent, var(--teal)), transparent);
  border-radius: 0 2px 2px 0;
}

.page-faq .faq-group {
  --group-accent: var(--teal);
}

.page-faq .faq-group--lineup {
  --group-accent: var(--amber);
}

.page-faq .faq-group--data {
  --group-accent: var(--red-soft);
}

.page-faq .faq-group--account {
  --group-accent: var(--teal);
}

.page-faq .faq-group--support {
  --group-accent: var(--amber);
  padding-block: clamp(28px, 4.6vw, 52px);
  background:
    radial-gradient(90% 120% at 100% 0%, rgba(255, 176, 32, 0.13), transparent 62%),
    var(--panel);
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin: 0;
}

.page-faq .faq-group__code {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--group-accent, var(--teal));
  border: 1px solid currentColor;
  border-radius: var(--radius);
  padding: 3px 8px;
  background: rgba(6, 10, 18, 0.6);
}

.page-faq .faq-group__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(21px, 3.4vw, 33px);
  line-height: 1.15;
  letter-spacing: 0.01em;
  margin: 0;
}

.page-faq .faq-group__lede {
  margin: 12px 0 0;
  max-width: 62ch;
  font-size: clamp(14px, 1.5vw, 16px);
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: clamp(16px, 2.6vw, 26px) 0 clamp(16px, 2.6vw, 24px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--night);
  overflow: hidden;
}

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

/* ---------- 展开条目 ---------- */
.page-faq .faq-items {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: clamp(16px, 2.4vw, 24px);
}

.page-faq .faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(20, 32, 58, 0.4), rgba(6, 10, 18, 0.4));
  transition: border-color 0.16s ease, box-shadow 0.16s ease;
}

.page-faq .faq-item:has(.expand__trigger[aria-expanded="true"]) {
  border-color: rgba(31, 231, 182, 0.5);
  box-shadow: inset 2px 0 0 var(--teal);
}

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

.page-faq .faq-item .expand__trigger {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: 100%;
  margin: 0;
  padding: 14px clamp(14px, 2vw, 20px);
  background: none;
  border: 0;
  border-radius: var(--radius);
  font: inherit;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
}

.page-faq .faq-item .expand__trigger:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: -2px;
}

.page-faq .faq-item__no {
  flex: 0 0 auto;
  padding-top: 3px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted-dim);
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(15px, 1.9vw, 18px);
  line-height: 1.5;
}

.page-faq .faq-item .expand__body {
  padding: 0 clamp(14px, 2vw, 20px) clamp(16px, 2.2vw, 20px);
}

/* ---------- 现象 / 原因 / 处理 ---------- */
.page-faq .faq-block {
  border-left: 2px solid var(--line);
  padding-left: 14px;
}

.page-faq .faq-block + .faq-block {
  margin-top: 14px;
}

.page-faq .faq-block--cause {
  border-left-color: var(--amber);
}

.page-faq .faq-block--fix {
  border-left-color: var(--teal);
}

.page-faq .faq-block__key {
  margin: 0 0 5px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted-dim);
}

.page-faq .faq-block__text {
  margin: 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-faq .faq-block--cause .faq-block__text {
  color: var(--muted);
}

.page-faq .faq-block__steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-faq .faq-block__steps > li {
  counter-increment: faqstep;
  position: relative;
  padding-left: 28px;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

.page-faq .faq-block__steps > li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--teal);
}

/* ---------- 客服面板 ---------- */
.page-faq .faq-support {
  display: grid;
  gap: var(--faq-gap);
  margin-top: clamp(16px, 2.6vw, 26px);
}

.page-faq .faq-support__title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(16px, 2vw, 19px);
  line-height: 1.4;
  color: var(--ink);
}

.page-faq .faq-checklist {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.page-faq .faq-checklist > li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-checklist > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 2px;
  background: var(--amber);
}

.page-faq .faq-channels {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-channel {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  background: var(--night);
}

.page-faq .faq-channel__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted-dim);
}

.page-faq .faq-channel__val {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-faq .faq-note {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted-dim);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-intro {
    padding-top: clamp(34px, 5vw, 62px);
  }

  .page-faq .faq-item .expand__trigger {
    align-items: center;
    padding-block: 16px;
  }

  .page-faq .faq-item__no {
    padding-top: 0;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-support {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: clamp(24px, 4vw, 48px);
    align-items: start;
  }

  .page-faq .faq-group__head {
    gap: 14px 16px;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-intro::before {
    top: -110px;
    right: -90px;
    width: 320px;
    height: 320px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump__link,
  .page-faq .faq-item {
    transition: none;
  }
}