.page-faq {
  --faq-gutter: 24px;
  --faq-panel-bg: rgba(255, 255, 255, 0.06);
  --faq-panel-line: rgba(255, 255, 255, 0.16);
}

/* ===== 面包屑 ===== */
.page-faq .faq-breadcrumb {
  padding-top: 24px;
  padding-bottom: 8px;
}

.page-faq .faq-breadcrumb .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
}

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

.page-faq .faq-breadcrumb .sep {
  color: rgba(26, 26, 46, 0.3);
}

.page-faq .faq-breadcrumb [aria-current="page"] {
  color: var(--text-dark);
  font-weight: 700;
}

/* ===== 页头说明区 ===== */
.page-faq .faq-hero {
  position: relative;
  display: grid;
  gap: 28px;
  padding-top: 32px;
  padding-bottom: 36px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 22px;
  right: 0;
  width: 132px;
  height: 22px;
  background: linear-gradient(90deg, var(--orange), var(--gold));
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 100%, 12px 100%);
}

.page-faq .faq-hero-copy {
  position: relative;
}

.page-faq .faq-hero-kicker {
  display: inline-block;
  padding-left: 16px;
  border-left: 4px solid var(--orange);
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.18em;
  line-height: 1.4;
  color: var(--orange);
  margin-bottom: 16px;
}

.page-faq .faq-hero h1 {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-style: italic;
  font-weight: 900;
  font-size: clamp(28px, 5.2vw, 46px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--text-dark);
  max-width: 15em;
}

.page-faq .faq-hero-copy > p {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(26, 26, 46, 0.7);
}

.page-faq .faq-hero-copy::after {
  content: "";
  display: block;
  width: 220px;
  height: 8px;
  margin-top: 28px;
  background: linear-gradient(90deg, var(--blue-deep), var(--blue-bright));
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 100%, 0 100%);
}

.page-faq .faq-hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-self: end;
}

.page-faq .faq-hero-facts .stat {
  flex: 1 1 150px;
  background: #fff;
  border: 1px solid rgba(10, 26, 48, 0.06);
  border-left: 4px solid var(--orange);
  box-shadow: var(--shadow);
  padding: 16px 14px;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
}

.page-faq .faq-hero-facts .stat-value {
  display: block;
  font-family: var(--font-data);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--blue-deep);
}

.page-faq .faq-hero-facts .stat-label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.4;
  color: rgba(26, 26, 46, 0.6);
}

/* ===== 搜索与快速分类 ===== */
.page-faq .faq-tools {
  display: grid;
  gap: 16px;
  padding: 4px 0 28px;
}

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

.page-faq .faq-search-label {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-faq .faq-search-input {
  width: 100%;
  height: 50px;
  border: 1px solid rgba(10, 26, 48, 0.12);
  border-left: 4px solid var(--orange);
  background: #fff;
  padding: 0 16px 0 68px;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--text-dark);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.page-faq .faq-search-input:focus {
  border-color: var(--blue-bright);
  box-shadow: 0 0 0 3px rgba(58, 141, 255, 0.16);
}

.page-faq .faq-anchor {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.page-faq .faq-anchor-title {
  margin-right: 4px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: rgba(26, 26, 46, 0.55);
}

.page-faq .faq-anchor a {
  display: inline-block;
  padding: 8px 12px;
  background: #fff;
  border: 1px solid rgba(10, 26, 48, 0.1);
  font-size: 14px;
  font-weight: 600;
  color: var(--blue-deep);
  text-decoration: none;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
  transition: background 0.2s, color 0.2s;
}

.page-faq .faq-anchor a:hover {
  background: var(--blue-deep);
  color: #fff;
}

/* ===== 章节标题 ===== */
.page-faq .section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 30px;
}

.page-faq .section-prefix {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--orange);
  text-transform: uppercase;
}

.page-faq .section-title {
  margin: 0;
  font-family: var(--font-head);
  font-style: italic;
  font-weight: 900;
  font-size: 28px;
  line-height: 1.2;
  color: var(--text-dark);
}

.page-faq .section-note {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: rgba(26, 26, 46, 0.5);
}

/* ===== 热门问题 ===== */
.page-faq .hot-grid {
  display: grid;
  gap: 24px;
  align-items: start;
}

.page-faq .hot-figure {
  margin: 0;
}

.page-faq .hot-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  box-shadow: var(--shadow);
  clip-path: polygon(0 0, calc(100% - 32px) 0, 100% 32px, 100% 100%, 0 100%);
}

.page-faq .hot-figure figcaption {
  margin-top: 12px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(26, 26, 46, 0.5);
}

/* ===== FAQ 手风琴基础 ===== */
.page-faq .faq-item {
  border: 0;
  border-top: 1px solid rgba(10, 26, 48, 0.14);
  margin: 0;
  background: transparent;
}

.page-faq .faq-item:last-child {
  border-bottom: 1px solid rgba(10, 26, 48, 0.14);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.5;
  color: var(--text-dark);
  transition: color 0.2s;
}

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

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

.page-faq .faq-item summary::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-data);
  font-size: 20px;
  font-weight: 400;
  line-height: 1;
  color: var(--orange);
  transition: transform 0.25s var(--ease);
}

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

.page-faq .faq-item .faq-no {
  flex: 0 0 auto;
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 700;
  color: var(--orange);
}

.page-faq .faq-answer {
  margin: 0;
  padding: 0 24px 18px 40px;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(26, 26, 46, 0.72);
  animation: faqFade 0.3s var(--ease);
}

.page-faq .faq-answer p {
  margin: 0 0 10px;
}

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

.page-faq .faq-answer a {
  color: var(--blue-bright);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

/* ===== 主题分类 ===== */
.page-faq .faq-topics {
  margin-top: 48px;
  padding-top: 56px;
  padding-bottom: 56px;
  background:
    radial-gradient(60% 80% at 88% 10%, rgba(58, 141, 255, 0.26), transparent 60%),
    linear-gradient(135deg, var(--blue-deep), var(--blue-deep-2) 52%, var(--blue-deep-3));
  color: #fff;
  position: relative;
  overflow: hidden;
}

.page-faq .faq-topics::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.page-faq .faq-topics .container {
  position: relative;
}

.page-faq .faq-topics .section-title {
  color: #fff;
}

.page-faq .faq-topics .section-note {
  color: rgba(255, 255, 255, 0.55);
}

.page-faq .faq-topics .section-prefix {
  color: var(--gold);
}

.page-faq .faq-topics-intro {
  margin: -16px 0 24px;
  max-width: 72ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.72);
}

.page-faq .topics-grid {
  display: grid;
  gap: 18px;
}

.page-faq .topic-block {
  position: relative;
  padding: 26px 22px 6px;
  background: var(--faq-panel-bg);
  border: 1px solid var(--faq-panel-line);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-faq .topic-block:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.26);
  transform: translateY(-2px);
}

.page-faq .topic-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.page-faq .topic-no {
  font-family: var(--font-data);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-faq .topic-head h3 {
  margin: 0;
  font-family: var(--font-head);
  font-style: italic;
  font-weight: 900;
  font-size: 20px;
  color: #fff;
}

.page-faq .topic-block .faq-item {
  border-top-color: rgba(255, 255, 255, 0.14);
}

.page-faq .topic-block .faq-item:last-child {
  border-bottom-color: rgba(255, 255, 255, 0.14);
}

.page-faq .topic-block .faq-item summary {
  padding: 13px 0;
  font-size: 15px;
  color: #fff;
}

.page-faq .topic-block .faq-item summary:hover {
  color: #ffd7c2;
}

.page-faq .topic-block .faq-item .faq-no {
  color: var(--gold);
}

.page-faq .topic-block .faq-item summary::after {
  color: var(--gold);
}

.page-faq .topic-block .faq-answer {
  color: rgba(255, 255, 255, 0.76);
  font-size: 14px;
  padding-left: 38px;
  padding-bottom: 14px;
}

.page-faq .topic-block .faq-answer a {
  color: #9cc3ff;
}

.page-faq .topic-block .faq-answer a:hover {
  color: #fff;
}

/* ===== 主题图示 ===== */
.page-faq .topic-visual {
  display: grid;
  gap: 20px;
  margin-top: 26px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  align-items: center;
}

.page-faq .topic-visual-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
}

.page-faq .topic-visual-copy {
  color: rgba(255, 255, 255, 0.85);
}

.page-faq .topic-visual-copy h4 {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-style: italic;
  font-weight: 900;
  font-size: 24px;
  color: #fff;
}

.page-faq .topic-visual-copy ol {
  margin: 0 0 18px;
  padding: 0 0 0 22px;
  font-size: 15px;
  line-height: 2;
}

.page-faq .topic-visual-copy li::marker {
  color: var(--orange);
  font-family: var(--font-data);
}

/* ===== 联系技术支持 ===== */
.page-faq .faq-contact {
  padding-top: 56px;
  padding-bottom: 76px;
}

.page-faq .faq-contact-panel {
  position: relative;
  display: grid;
  gap: 24px;
  padding: 28px 22px;
  background: #fff;
  border: 1px solid rgba(10, 26, 48, 0.06);
  box-shadow: var(--shadow);
  clip-path: polygon(0 0, calc(100% - 40px) 0, 100% 40px, 100% 100%, 0 100%);
}

.page-faq .faq-contact-copy h2 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-style: italic;
  font-weight: 900;
  font-size: 28px;
  color: var(--text-dark);
}

.page-faq .faq-contact-copy p {
  margin: 0 0 20px;
  max-width: 48ch;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(26, 26, 46, 0.66);
}

.page-faq .faq-contact-list {
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(10, 26, 48, 0.1);
}

.page-faq .faq-contact-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(10, 26, 48, 0.1);
}

.page-faq .faq-contact-item dt {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-faq .faq-contact-item dd {
  margin: 0;
  text-align: right;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-dark);
  word-break: break-word;
}

.page-faq .faq-backtop {
  display: inline-block;
  justify-self: start;
  padding: 9px 14px;
  background: var(--bg-light);
  border: 1px solid rgba(10, 26, 48, 0.12);
  font-size: 14px;
  font-weight: 600;
  color: var(--blue-deep);
  text-decoration: none;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
}

.page-faq .faq-backtop::before {
  content: "↑ ";
}

/* ===== 响应式 ===== */
@media (min-width: 700px) {
  .page-faq .topics-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }

  .page-faq .topic-block--wide {
    grid-column: span 2;
  }
}

@media (min-width: 800px) {
  .page-faq .topic-visual {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
    margin-top: 32px;
    padding: 24px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-hero {
    grid-template-columns: 1.25fr 0.75fr;
    gap: 48px;
    align-items: end;
    padding-top: 48px;
    padding-bottom: 44px;
  }

  .page-faq .hot-grid {
    grid-template-columns: 0.8fr 1.2fr;
    gap: 48px;
  }

  .page-faq .faq-contact-panel {
    grid-template-columns: 1.2fr 1fr;
    gap: 36px;
    padding: 40px;
  }

  .page-faq .faq-contact-panel .faq-backtop {
    position: absolute;
    top: 36px;
    right: 40px;
  }
}

@media (min-width: 880px) {
  .page-faq .section-title {
    font-size: 36px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-tools {
    grid-template-columns: minmax(260px, 1fr) auto;
    align-items: center;
    padding: 0 0 36px;
  }
}

@media (min-width: 1100px) {
  .page-faq .topics-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    animation: none !important;
    transition: none !important;
  }
}