.page-faq {
  --faq-sticky: 104px;
  --faq-line: rgba(94, 110, 117, 0.3);
  background: var(--mist);
  color: var(--ink);
  font-family: var(--font-sans);
  overflow-x: clip;
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 4.5vw, 56px) 0 clamp(32px, 5.5vw, 76px);
  background: linear-gradient(158deg, var(--deep) 0%, #07222f 56%, var(--ink) 100%);
  border-bottom: var(--border-thick) solid var(--aurora);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, rgba(31, 224, 192, 0.11) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(90deg, rgba(31, 224, 192, 0.07) 0 1px, transparent 1px 96px);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  top: -20%;
  width: min(58vw, 620px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 122, 61, 0.22) 0%, transparent 68%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  font-size: 13px;
}

.page-faq .breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: rgba(243, 248, 247, 0.45);
}

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

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  text-decoration: underline;
}

.page-faq .breadcrumb li[aria-current="page"] {
  color: rgba(243, 248, 247, 0.7);
}

.page-faq .faq-hero .eyebrow {
  margin: 0 0 12px;
  color: var(--sand);
  font-size: 12px;
  letter-spacing: 0.18em;
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(2.2rem, 7vw, 4.4rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--mist);
}

.page-faq .faq-hero__lead {
  max-width: 40em;
  margin: 18px 0 0;
  color: rgba(243, 248, 247, 0.82);
  font-size: clamp(15px, 2.2vw, 17px);
  line-height: 1.75;
}

/* 检索 */
.page-faq .faq-search {
  margin-top: clamp(20px, 3vw, 30px);
  max-width: 620px;
}

.page-faq .faq-search__label {
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--aurora);
}

.page-faq .faq-search__field {
  display: flex;
  align-items: center;
  border: var(--border-thick) solid var(--aurora);
  background: rgba(7, 20, 29, 0.55);
  box-shadow: 6px 6px 0 rgba(31, 224, 192, 0.18);
  transition: box-shadow 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-search__field:focus-within {
  border-color: var(--volt);
  box-shadow: 6px 6px 0 rgba(45, 156, 255, 0.32);
}

.page-faq .faq-search__field input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 14px 16px;
  border: 0;
  background: transparent;
  color: var(--mist);
  font: inherit;
  font-size: 15px;
}

.page-faq .faq-search__field input::placeholder {
  color: rgba(243, 248, 247, 0.5);
}

.page-faq .faq-search__field input:focus {
  outline: none;
}

.page-faq .faq-search__tips {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 14px 0 0;
  font-size: 13px;
}

.page-faq .faq-search__tips .mono {
  color: rgba(243, 248, 247, 0.5);
  letter-spacing: 0.12em;
}

.page-faq .faq-search__tips a {
  display: inline-block;
  padding: 4px 10px;
  border: 1px solid rgba(31, 224, 192, 0.45);
  color: var(--aurora);
  font-size: 13px;
  text-decoration: none;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-search__tips a:hover,
.page-faq .faq-search__tips a:focus-visible {
  background: var(--aurora);
  color: var(--ink);
}

/* 首屏热门卡 */
.page-faq .faq-hero__panel {
  border: var(--border-thick) solid rgba(31, 224, 192, 0.55);
  background: rgba(243, 248, 247, 0.05);
  box-shadow: var(--shadow-hard-lg);
  padding: clamp(16px, 2.6vw, 24px);
}

.page-faq .faq-hero__panel-title {
  margin: 0 0 14px;
  color: var(--sand);
  font-size: 11.5px;
  letter-spacing: 0.14em;
}

.page-faq .faq-hero__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-faq .faq-hero__list li + li {
  border-top: 1px solid rgba(243, 248, 247, 0.14);
}

.page-faq .faq-hero__list a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "idx title"
    "idx note";
  column-gap: 12px;
  padding: 11px 4px;
  text-decoration: none;
  color: var(--mist);
  transition: background 0.2s var(--ease), padding-left 0.2s var(--ease);
}

.page-faq .faq-hero__list a:hover,
.page-faq .faq-hero__list a:focus-visible {
  background: rgba(31, 224, 192, 0.1);
  padding-left: 10px;
}

.page-faq .faq-hero__list .mono {
  grid-area: idx;
  align-self: center;
  color: var(--orange);
  font-size: 13px;
}

.page-faq .faq-hero__list strong {
  grid-area: title;
  font-size: 15px;
  line-height: 1.4;
}

.page-faq .faq-hero__list em {
  grid-area: note;
  color: rgba(243, 248, 247, 0.6);
  font-size: 12.5px;
  font-style: normal;
  line-height: 1.5;
}

.page-faq .faq-hero__panel-foot {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px dashed rgba(243, 248, 247, 0.22);
  color: rgba(243, 248, 247, 0.62);
  font-size: 12.5px;
  line-height: 1.65;
}

/* 主体双栏 */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 40px);
  padding-top: clamp(24px, 4vw, 52px);
  padding-bottom: clamp(36px, 6vw, 80px);
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--rock);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border: 2px solid var(--ink);
  background: #ffffff;
  color: var(--deep);
  font-size: 13.5px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-index__list .mono {
  color: var(--aurora-ink);
  font-size: 12px;
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  background: var(--deep);
  border-color: var(--deep);
  color: var(--mist);
}

.page-faq .faq-index__list a:hover .mono,
.page-faq .faq-index__list a:focus-visible .mono {
  color: var(--aurora);
}

/* 答案区 */
.page-faq .faq-answers {
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
  min-width: 0;
}

.page-faq .faq-sec {
  scroll-margin-top: var(--faq-sticky);
  padding: clamp(18px, 3vw, 32px);
  background: #ffffff;
  border: var(--border-thick) solid var(--ink);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-sec--paper {
  background: var(--paper);
}

.page-faq .faq-sec--deep {
  background: var(--deep);
  border-color: var(--ink);
  color: var(--mist);
  box-shadow: var(--shadow-hard-lg);
}

.page-faq .faq-sec__head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.page-faq .faq-sec__num {
  flex: none;
  padding: 3px 8px;
  border: 2px solid var(--ink);
  background: var(--sand);
  color: var(--ink);
  font-size: 12.5px;
  line-height: 1.4;
}

.page-faq .faq-sec h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 3.2vw, 1.75rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--deep);
}

.page-faq .faq-sec--deep h2 {
  color: var(--mist);
}

.page-faq .faq-sec__lead {
  margin: 12px 0 0;
  color: var(--rock);
  font-size: 15px;
  line-height: 1.7;
}

.page-faq .faq-sec--deep .faq-sec__lead {
  color: rgba(243, 248, 247, 0.75);
}

/* 步骤 */
.page-faq .faq-steps {
  counter-reset: faqstep;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-faq .faq-steps li {
  counter-increment: faqstep;
  position: relative;
  padding-left: 46px;
  color: #24333a;
  font-size: 15px;
  line-height: 1.72;
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border: 2px solid var(--aurora-ink);
  color: var(--aurora-ink);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1;
}

.page-faq .faq-steps a {
  color: var(--volt);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 图文 */
.page-faq .faq-figure {
  margin: 20px 0 0;
  max-width: 320px;
}

.page-faq .faq-figure--wide {
  max-width: 100%;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: var(--border-thick) solid var(--ink);
  background: var(--deep);
}

.page-faq .faq-figure figcaption {
  margin-top: 8px;
  color: var(--rock);
  font-size: 11.5px;
  letter-spacing: 0.1em;
}

.page-faq .faq-sec__split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2.5vw, 28px);
  align-items: start;
}

/* 手风琴 */
.page-faq .faq-qa {
  margin-top: 18px;
  border-top: 2px solid var(--ink);
}

.page-faq .faq-sec--deep .faq-qa {
  border-top-color: rgba(243, 248, 247, 0.4);
}

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

.page-faq .qa summary {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 0;
  cursor: pointer;
  list-style: none;
  font-size: clamp(14.5px, 2.1vw, 16px);
  font-weight: 700;
  line-height: 1.55;
  color: var(--deep);
  transition: color 0.2s var(--ease);
}

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

.page-faq .qa summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--orange);
}

.page-faq .qa[open] summary {
  color: var(--aurora-ink);
}

.page-faq .qa[open] summary::after {
  content: "–";
  color: var(--aurora-ink);
}

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

.page-faq .qa__body {
  padding: 0 0 16px;
  max-width: 68ch;
  color: #2c3a41;
  font-size: 15px;
  line-height: 1.78;
}

.page-faq .qa__body p {
  margin: 0;
}

.page-faq .qa__body a {
  color: var(--volt);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 自查清单 */
.page-faq .faq-check {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-faq .faq-check li {
  position: relative;
  padding: 10px 12px 10px 40px;
  border-left: 3px solid var(--meadow);
  background: rgba(243, 248, 247, 0.07);
  color: rgba(243, 248, 247, 0.9);
  font-size: 14.5px;
  line-height: 1.65;
}

.page-faq .faq-check li::before {
  content: "✓";
  position: absolute;
  left: 12px;
  top: 10px;
  color: var(--aurora);
  font-family: var(--font-mono);
  font-size: 14px;
}

.page-faq .faq-cta {
  margin-top: clamp(20px, 3vw, 30px);
  padding: clamp(16px, 2.6vw, 22px);
  border: var(--border-thick) solid var(--orange);
  background: rgba(255, 122, 61, 0.1);
  display: grid;
  gap: 14px;
  justify-items: start;
}

.page-faq .faq-cta p {
  margin: 0;
  max-width: 60ch;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.7;
}

.page-faq .faq-cta .btn {
  justify-self: start;
}

/* 响应式 */
@media (min-width: 720px) {
  .page-faq .faq-sec__split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 260px);
  }

  .page-faq .faq-steps {
    margin-top: 22px;
  }

  .page-faq .faq-figure {
    margin-top: 22px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.85fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-hero__panel {
    margin-top: 44px;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(200px, 236px) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-sticky);
    padding-right: 6px;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index__list a {
    white-space: normal;
    border: 2px solid transparent;
    border-left: 3px solid var(--sand);
    background: transparent;
    padding: 9px 10px;
  }

  .page-faq .faq-index__list a:hover,
  .page-faq .faq-index__list a:focus-visible {
    border-color: var(--ink);
    border-left-color: var(--aurora);
    background: #ffffff;
    color: var(--deep);
  }

  .page-faq .faq-index__list a:hover .mono,
  .page-faq .faq-index__list a:focus-visible .mono {
    color: var(--aurora-ink);
  }
}

@media (min-width: 1140px) {
  .page-faq .faq-sec__split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
  }

  .page-faq .faq-figure {
    max-width: 300px;
  }
}

@media (max-width: 480px) {
  .page-faq .faq-hero__list a {
    padding: 10px 2px;
  }

  .page-faq .faq-sec {
    box-shadow: 5px 5px 0 rgba(7, 20, 29, 0.14);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-search__field,
  .page-faq .faq-search__tips a,
  .page-faq .faq-hero__list a,
  .page-faq .faq-index__list a,
  .page-faq .qa summary {
    transition: none;
  }
}