.page-faq {
  --faq-line: rgba(26, 42, 58, 0.14);
  background: linear-gradient(180deg, var(--paper-white) 0%, var(--warm-sand) 100%);
  overflow-x: hidden;
}

/* ===== 头部 ===== */
.page-faq .faq-hero {
  position: relative;
  background:
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.035) 0 46px, transparent 46px 48px),
    linear-gradient(135deg, var(--deep-navy) 0%, var(--deep-ocean) 100%);
  color: var(--white);
  padding-top: clamp(42px, 7vw, 88px);
  padding-bottom: clamp(34px, 5vw, 58px);
  overflow: hidden;
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 6px;
  background: repeating-linear-gradient(90deg, var(--brand-orange) 0 28px, var(--morning-gold) 28px 56px);
  opacity: 0.92;
}
.page-faq .faq-hero-inner {
  position: relative;
  z-index: 2;
}
.page-faq .faq-hero .breadcrumb {
  margin-bottom: clamp(28px, 5vw, 44px);
}
.page-faq .faq-hero .breadcrumb-item {
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}
.page-faq .faq-hero .breadcrumb a {
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
  transition: color 0.25s var(--ease);
}
.page-faq .faq-hero .breadcrumb a:hover {
  color: var(--white);
}
.page-faq .faq-hero .breadcrumb-item[aria-current="page"] {
  color: var(--white);
}
.page-faq .faq-kicker {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--morning-gold);
  margin: 0 0 18px;
}
.page-faq .faq-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(38px, 8vw, 84px);
  line-height: 1.04;
  letter-spacing: -0.01em;
  color: var(--white);
  margin: 0 0 20px;
}
.page-faq .faq-title span {
  display: block;
}
.page-faq .faq-lede {
  max-width: 42em;
  margin: 0;
  font-size: clamp(15px, 2vw, 17px);
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.88);
}
.page-faq .faq-bg-mark {
  position: absolute;
  right: -30px;
  bottom: -52px;
  width: 260px;
  height: 260px;
  color: rgba(255, 255, 255, 0.07);
  pointer-events: none;
  z-index: 1;
}
.page-faq .faq-bg-mark text {
  font-family: var(--font-display);
  font-size: 190px;
  font-weight: 700;
  fill: none;
  stroke: currentColor;
  stroke-width: 1;
}

/* ===== 布局 ===== */
.page-faq .faq-layout {
  display: flex;
  flex-direction: column;
  gap: clamp(24px, 4vw, 48px);
  padding: clamp(28px, 6vw, 72px) 0 clamp(48px, 8vw, 96px);
}
.page-faq .faq-main {
  order: 2;
  min-width: 0;
}
.page-faq .faq-index {
  order: 1;
}

/* ===== 区块标题 ===== */
.page-faq .faq-section {
  margin-bottom: clamp(44px, 7vw, 80px);
  scroll-margin-top: 128px;
}
.page-faq .faq-section:last-child {
  margin-bottom: 0;
}
.page-faq .faq-section-heading {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px 14px;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--faq-line);
}
.page-faq .faq-section-heading::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 96px;
  height: 3px;
  background: var(--brand-orange);
}
.page-faq .faq-section-heading .section-index {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(42px, 5vw, 64px);
  line-height: 1;
  color: rgba(255, 107, 53, 0.18);
  grid-column: 1;
  margin-bottom: 8px;
}
.page-faq .faq-section-heading .section-title {
  grid-column: 1;
  font-size: clamp(24px, 3.2vw, 36px);
  line-height: 1.2;
  font-weight: 700;
  margin: 0;
}
.page-faq .faq-section-heading .section-desc {
  grid-column: 1;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}
@media (min-width: 640px) {
  .page-faq .faq-section-heading {
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
  }
  .page-faq .faq-section-heading .section-index {
    grid-row: 1 / 3;
    grid-column: 1;
    align-self: start;
  }
  .page-faq .faq-section-heading .section-title {
    grid-row: 1;
    grid-column: 2;
    align-self: end;
  }
  .page-faq .faq-section-heading .section-desc {
    grid-row: 2;
    grid-column: 2;
  }
}

/* ===== 图片 ===== */
.page-faq .faq-figure {
  margin: 24px 0 32px;
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border: 1px solid rgba(26, 42, 58, 0.1);
  border-bottom: 3px solid var(--brand-orange);
  border-radius: var(--radius);
}
.page-faq .faq-figure-cap {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
}

/* ===== 手风琴 ===== */
.page-faq .faq-accordion {
  border-top: 3px solid var(--deep-navy);
}
.page-faq .faq-item {
  background: var(--white);
  border-bottom: 1px solid var(--faq-line);
  transition: background 0.3s var(--ease);
}
.page-faq .faq-item:has(> .faq-trigger[aria-expanded="true"]) {
  background: var(--warm-sand);
}
.page-faq .faq-item-title {
  margin: 0;
}
.page-faq .faq-trigger {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  background: none;
  border: 0;
  padding: 20px 12px 20px 16px;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  text-align: left;
  color: var(--text-primary);
  cursor: pointer;
  transition: background 0.25s var(--ease);
}
.page-faq .faq-trigger:hover {
  background: rgba(255, 107, 53, 0.06);
}
.page-faq .faq-num {
  flex: 0 0 auto;
  min-width: 42px;
  background: var(--tibetan-red);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-align: center;
  padding: 7px 6px;
  border-radius: var(--radius);
}
.page-faq .faq-q {
  flex: 1 1 auto;
  font-weight: 600;
}
.page-faq .accordion-icon {
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  fill: none;
  stroke: var(--brand-orange);
  stroke-width: 2;
  stroke-linecap: round;
  transition: transform 0.3s var(--ease);
}
.page-faq .faq-trigger[aria-expanded="true"] .accordion-icon {
  transform: rotate(180deg);
}
.page-faq .ico-v {
  transition: opacity 0.3s var(--ease);
}
.page-faq .faq-trigger[aria-expanded="true"] .ico-v {
  opacity: 0;
}

/* ===== 答案 ===== */
.page-faq .faq-answer {
  max-height: 2400px;
  opacity: 1;
  overflow: hidden;
  transition: max-height 0.35s var(--ease), opacity 0.25s var(--ease);
}
.page-faq .faq-answer:not([data-open]) {
  max-height: 0;
  opacity: 0;
}
.page-faq .faq-answer:not([data-open]) .faq-answer-inner {
  padding-top: 0;
  padding-bottom: 0;
  visibility: hidden;
}
.page-faq .faq-answer-inner {
  padding: 0 clamp(16px, 3vw, 28px) 26px 76px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
  transition: padding 0.3s var(--ease), visibility 0.3s var(--ease);
}
.page-faq .faq-answer-inner p {
  margin: 0 0 12px;
}
.page-faq .faq-answer-inner p:last-child {
  margin-bottom: 0;
}
@media (max-width: 480px) {
  .page-faq .faq-answer-inner {
    padding-left: 56px;
  }
}

/* ===== 列表与标签 ===== */
.page-faq .faq-browser-list {
  list-style: none;
  margin: 16px 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.page-faq .faq-browser-list li {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(26, 42, 58, 0.1);
  border-left: 4px solid var(--brand-orange);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 14px;
  padding: 12px 14px;
}
@media (max-width: 480px) {
  .page-faq .faq-browser-list {
    grid-template-columns: 1fr;
  }
}
.page-faq .faq-tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}
.page-faq .faq-tag-row .tag {
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(192, 57, 43, 0.22);
  color: var(--tibetan-red);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  padding: 5px 10px;
}

/* ===== 按钮 ===== */
.page-faq .btn-sm {
  display: inline-block;
  margin-top: 18px;
  padding: 9px 16px;
  font-size: 13px;
  font-family: var(--font-body);
  background: var(--white);
  border: 1px solid rgba(26, 42, 58, 0.25);
  border-radius: var(--radius);
  color: var(--text-primary);
  text-decoration: none;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease), background 0.25s var(--ease);
}
.page-faq .btn-sm:hover {
  border-color: var(--brand-orange);
  color: var(--brand-orange);
  background: rgba(255, 107, 53, 0.04);
}

/* ===== 侧边索引 ===== */
.page-faq .faq-index-inner {
  background: var(--warm-sand);
  border-top: 4px solid var(--brand-orange);
  padding: clamp(16px, 3vw, 24px);
}
.page-faq .faq-index-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--tibetan-red);
  margin: 0 0 14px;
}
.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-faq .faq-index-list a {
  display: inline-block;
  font-size: 13px;
  font-family: var(--font-body);
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(26, 42, 58, 0.1);
  border-radius: 50px;
  padding: 7px 14px;
  text-decoration: none;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease), background 0.25s var(--ease);
}
.page-faq .faq-index-list a:hover {
  border-color: var(--brand-orange);
  color: var(--brand-orange);
  background: var(--white);
}
.page-faq .faq-index-note {
  margin: 20px 0 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}
.page-faq .faq-index-actions {
  display: flex;
  gap: 10px;
}
.page-faq .faq-index-actions .btn {
  flex: 1;
  display: block;
  text-align: center;
  text-decoration: none;
  font-size: 14px;
  padding: 11px 16px;
  border-radius: var(--radius);
  transition: background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.page-faq .faq-index .btn-primary {
  background: var(--brand-orange);
  border: 1px solid var(--brand-orange);
  color: var(--white);
}
.page-faq .faq-index .btn-primary:hover {
  background: var(--tibetan-red);
  border-color: var(--tibetan-red);
}
.page-faq .faq-index .btn-outline {
  background: transparent;
  border: 1px solid var(--deep-navy);
  color: var(--deep-navy);
}
.page-faq .faq-index .btn-outline:hover {
  background: var(--deep-navy);
  color: var(--white);
}

/* ===== 桌面端 ===== */
@media (min-width: 960px) {
  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 272px;
    gap: clamp(48px, 7vw, 96px);
    align-items: start;
  }
  .page-faq .faq-main {
    order: 1;
    grid-column: 1;
    grid-row: 1;
  }
  .page-faq .faq-index {
    order: 2;
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: 128px;
    align-self: start;
  }
  .page-faq .faq-index-inner {
    background: var(--white);
    border: 1px solid rgba(26, 42, 58, 0.1);
    border-top: 5px solid var(--brand-orange);
    box-shadow: 10px 12px 0 rgba(26, 42, 58, 0.04);
    padding: 28px 26px;
  }
  .page-faq .faq-index-label {
    margin-bottom: 20px;
  }
  .page-faq .faq-index-list {
    display: block;
    border-top: 1px solid var(--faq-line);
    margin-bottom: 24px;
  }
  .page-faq .faq-index-list li {
    border-bottom: 1px solid var(--faq-line);
  }
  .page-faq .faq-index-list a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: transparent;
    border: 0;
    border-radius: 0;
    padding: 14px 6px 14px 2px;
    font-size: 15px;
  }
  .page-faq .faq-index-list a::after {
    content: "↗";
    font-family: var(--font-mono);
    font-size: 15px;
    color: var(--brand-orange);
    opacity: 0.7;
    transition: opacity 0.25s var(--ease), transform 0.25s var(--ease);
  }
  .page-faq .faq-index-list a:hover::after {
    opacity: 1;
    transform: translate(2px, -2px);
  }
  .page-faq .faq-index-actions {
    flex-direction: column;
  }
}