.page-faq {
  --faq-radius: 20px;
  --faq-grid-gap: 28px;
}

/* ===== Hero 区 ===== */
.page-faq__hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 84% 18%, rgba(255, 107, 0, 0.18), transparent 34%),
    linear-gradient(135deg, #0A1A3F 0%, #152B5E 70%, #1E3A6E 100%);
}

.page-faq__hero::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -8%;
  width: 54%;
  height: 150%;
  background: repeating-linear-gradient(
    115deg,
    rgba(255, 255, 255, 0.06) 0 1px,
    transparent 1px 14px
  );
  transform: rotate(14deg);
  border-radius: 30px;
  pointer-events: none;
}

.page-faq__hero::after {
  content: "";
  position: absolute;
  left: clamp(24px, 6vw, 72px);
  bottom: 24px;
  width: 140px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent), rgba(255, 107, 0, 0));
  border-radius: 99px;
  pointer-events: none;
}

.page-faq__hero-row {
  display: grid;
  gap: 28px;
  margin-top: 30px;
}

@media (min-width: 900px) {
  .page-faq__hero-row {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 48px;
  }
}

.page-faq__hero-copy {
  max-width: 680px;
}

.page-faq__hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

@media (min-width: 900px) {
  .page-faq__hero-metrics {
    grid-template-columns: repeat(3, 130px);
    gap: 12px;
  }
}

.page-faq__hero-metrics div {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-md);
  padding: 14px 16px;
}

.page-faq__hero-metrics strong {
  display: block;
  font-family: var(--font-num);
  font-size: 26px;
  line-height: 1.15;
  color: var(--color-accent-soft);
}

.page-faq__hero-metrics span {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--color-text-on-dark);
  letter-spacing: 0.02em;
}

.page-faq__topic-pills {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 34px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.page-faq__pills-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent-soft);
  margin-right: 4px;
}

.page-faq__topic-pills .tag {
  border: 1px solid rgba(255, 255, 255, 0.32);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.page-faq__topic-pills .tag:hover,
.page-faq__topic-pills .tag:focus-visible {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
  transform: translateY(-2px);
}

/* ===== 章节通用标题 ===== */
.page-faq__section-head {
  margin-bottom: clamp(28px, 4vw, 44px);
  max-width: 760px;
}

.page-faq__section-head--light .lead {
  color: var(--color-text-on-dark);
}

/* ===== 常用问题手风琴 ===== */
.page-faq__faq-layout {
  display: grid;
  gap: var(--faq-grid-gap);
}

@media (min-width: 1024px) {
  .page-faq__faq-layout {
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }
}

.page-faq__faq-nav-inner {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 20px 18px;
}

@media (min-width: 1024px) {
  .page-faq__faq-nav-inner {
    position: sticky;
    top: calc(var(--header-height) + 24px);
  }
}

.page-faq__nav-title {
  margin: 0 0 14px;
  padding: 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-soft);
}

.page-faq__nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-faq__nav-list a {
  display: block;
  padding: 10px 14px;
  border-radius: var(--radius-pill);
  color: var(--color-primary);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast), padding-left var(--transition-fast);
}

.page-faq__nav-list a:hover,
.page-faq__nav-list a:focus-visible {
  background: rgba(255, 107, 0, 0.1);
  color: var(--color-accent);
  padding-left: 18px;
}

.page-faq__faq-main {
  display: grid;
  gap: 12px;
  min-width: 0;
}

.page-faq__group-title {
  margin: 20px 0 4px;
  padding-bottom: 10px;
  display: inline-block;
  font-family: var(--font-display);
  font-size: 20px;
  color: var(--color-primary);
  border-bottom: 3px solid var(--color-accent);
}

.page-faq__group-title:first-child {
  margin-top: 0;
}

.page-faq__item {
  background: var(--color-white);
  border: 1px solid rgba(10, 26, 63, 0.08);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.page-faq__item[open] {
  border-color: rgba(255, 107, 0, 0.32);
  box-shadow: var(--shadow-md);
}

.page-faq__item summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

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

.page-faq__q {
  font-weight: 700;
  font-size: 15px;
  line-height: 1.5;
  color: var(--color-primary);
}

.page-faq__toggle {
  position: relative;
  flex: 0 0 22px;
  width: 22px;
  height: 22px;
  margin-left: auto;
  border-radius: 50%;
  background: rgba(255, 107, 0, 0.12);
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.page-faq__toggle::before,
.page-faq__toggle::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 2px;
  background: var(--color-accent);
}

.page-faq__toggle::before {
  width: 10px;
  height: 2px;
}

.page-faq__toggle::after {
  width: 2px;
  height: 10px;
}

.page-faq__item[open] .page-faq__toggle {
  background: var(--color-accent);
  transform: rotate(45deg);
}

.page-faq__item[open] .page-faq__toggle::before,
.page-faq__item[open] .page-faq__toggle::after {
  background: #fff;
}

.page-faq__answer {
  display: none;
  margin: 0 20px 20px;
  padding-left: 16px;
  border-left: 4px solid var(--color-accent);
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.8;
}

.page-faq__item[open] .page-faq__answer {
  display: block;
  animation: page-faq-fade 0.3s ease;
}

.page-faq__answer p {
  margin: 0;
}

.page-faq__answer a {
  color: var(--color-accent);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

@keyframes page-faq-fade {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== 新手指南（深蓝区） ===== */
.page-faq__guide {
  position: relative;
  overflow: hidden;
}

.page-faq__guide::before {
  content: "";
  position: absolute;
  right: -4%;
  bottom: -8%;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  border: 60px solid rgba(255, 107, 0, 0.08);
  pointer-events: none;
}

.page-faq__guide-grid {
  display: grid;
  gap: 36px;
  align-items: center;
}

@media (min-width: 1024px) {
  .page-faq__guide-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 56px;
  }
}

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

.page-faq__step {
  position: relative;
  padding: 22px 24px 22px 28px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.page-faq__step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  bottom: 22px;
  width: 4px;
  border-radius: 0 4px 4px 0;
  background: var(--color-accent);
}

.page-faq__step:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateX(6px);
}

.page-faq__step-index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--color-accent-soft);
}

.page-faq__step h3 {
  margin: 8px 0 6px;
  font-family: var(--font-display);
  font-size: 18px;
  color: #fff;
}

.page-faq__step p {
  margin: 0;
  color: var(--color-text-on-dark);
  font-size: 14px;
  line-height: 1.75;
}

.page-faq__guide-figure {
  margin: 0;
}

.page-faq__guide-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: var(--shadow-md);
}

.page-faq__guide-figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--color-text-on-dark);
}

/* ===== 快捷键与技巧（浅灰区） ===== */
.page-faq__tips {
  background: var(--color-bg);
}

.page-faq__tips-grid {
  display: grid;
  gap: 32px;
}

@media (min-width: 1024px) {
  .page-faq__tips-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 44px;
    align-items: start;
  }
}

.page-faq__tips-cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

@media (min-width: 640px) {
  .page-faq__tips-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-faq__tip-card {
  padding: 22px 24px;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.page-faq__tip-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.page-faq__keys {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 14px;
  min-height: 36px;
}

.page-faq__keys kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 34px;
  padding: 0 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-white);
  border: 1px solid rgba(10, 26, 63, 0.15);
  border-bottom-width: 3px;
  border-radius: var(--radius-sm);
  box-shadow: 0 2px 0 rgba(10, 26, 63, 0.06);
}

.page-faq__keys span {
  color: var(--color-text-soft);
  font-weight: 700;
}

.page-faq__tip-card h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
}

.page-faq__tip-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text);
}

.page-faq__tips-side {
  display: grid;
  gap: 18px;
  align-content: start;
  min-width: 0;
}

.page-faq__tips-figure {
  margin: 0;
}

.page-faq__tips-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(10, 26, 63, 0.08);
  box-shadow: var(--shadow-sm);
}

.page-faq__tips-note {
  background: var(--color-primary);
  color: #fff;
  padding: 20px 24px;
  border-radius: var(--radius-md);
}

.page-faq__tips-note-label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent-soft);
}

.page-faq__tips-note p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.85);
}

/* ===== 联系支持区 ===== */
.page-faq__support {
  background: var(--color-white);
}

.page-faq__support-card {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 32px;
  padding: clamp(28px, 5vw, 56px);
  background: var(--color-bg);
  border-radius: var(--radius-lg);
}

.page-faq__support-card::after {
  content: "24/7";
  position: absolute;
  right: -18px;
  top: -30px;
  font-family: var(--font-num);
  font-size: 110px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -2px;
  color: rgba(255, 107, 0, 0.1);
  pointer-events: none;
}

@media (min-width: 900px) {
  .page-faq__support-card {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: 40px 56px;
  }
}

.page-faq__support-intro {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-faq__support-intro .lead {
  margin-bottom: 8px;
}

.page-faq__support-intro .btn {
  justify-self: start;
  margin-top: 6px;
}

.page-faq__support-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  align-content: start;
}

@media (min-width: 640px) {
  .page-faq__support-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-faq__support-item {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 20px;
  border-top: 4px solid var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.page-faq__support-tag {
  display: inline-block;
  margin-bottom: 12px;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background: rgba(255, 107, 0, 0.1);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.page-faq__support-item h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
}

.page-faq__support-channel {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.5;
  color: var(--color-primary);
  word-break: break-all;
}

.page-faq__support-item p:last-child {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text-soft);
}

.page-faq__support-address {
  grid-column: 1 / -1;
  margin: 0;
  padding-top: 18px;
  border-top: 1px solid rgba(10, 26, 63, 0.08);
  color: var(--color-text-soft);
  font-size: 13px;
  letter-spacing: 0.02em;
}