.page-faq {
  --faq-soft: rgba(44, 232, 196, .16);
  --faq-grid-line: rgba(44, 232, 196, .07);
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: hidden;
  padding-bottom: clamp(32px, 6vw, 64px);
}

.page-faq *,
.page-faq *::before,
.page-faq *::after {
  box-sizing: border-box;
}

.page-faq h1,
.page-faq h2 {
  font-family: var(--font-head);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.16;
  color: var(--text);
  margin: 0;
}

.page-faq p {
  margin: 0;
}

.page-faq .faq-inline-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--faq-soft);
  margin-left: 6px;
  white-space: nowrap;
}

.page-faq .faq-inline-link:hover,
.page-faq .faq-inline-link:focus-visible {
  border-bottom-color: var(--cyan);
  color: var(--cyan-hi);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: clamp(22px, 4.5vw, 44px) 0 clamp(30px, 5.5vw, 60px);
  background:
    radial-gradient(92% 78% at 88% 0%, rgba(44, 232, 196, .17), transparent 62%),
    radial-gradient(72% 62% at 2% 18%, rgba(15, 58, 49, .9), transparent 68%),
    var(--ink);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), rgba(44, 232, 196, 0) 68%);
  opacity: .65;
}

.page-faq .faq-hero .breadcrumb {
  font-size: 13px;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

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

.page-faq .faq-hero .breadcrumb a:hover {
  color: var(--cyan);
}

.page-faq .faq-hero .eyebrow {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0 0 12px;
}

.page-faq .faq-hero h1 {
  font-size: clamp(30px, 6.2vw, 54px);
  max-width: 16em;
  margin-bottom: 16px;
}

.page-faq .faq-lede {
  max-width: 64ch;
  color: var(--muted);
  font-size: 16.5px;
  line-height: 1.78;
  margin-bottom: 26px;
}

.page-faq .faq-jump {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 560px;
  padding: 13px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(16, 42, 35, .88);
  color: var(--text);
  text-decoration: none;
  font-size: 15px;
  margin-bottom: 34px;
  transition: border-color .22s var(--ease), transform .22s var(--ease);
}

.page-faq .faq-jump:hover,
.page-faq .faq-jump:focus-visible {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-faq .faq-jump__icon {
  position: relative;
  flex: none;
  width: 17px;
  height: 17px;
  border: 2px solid var(--cyan);
  border-radius: 50%;
}

.page-faq .faq-jump__icon::after {
  content: "";
  position: absolute;
  right: -6px;
  bottom: -4px;
  width: 8px;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-faq .faq-jump__text {
  flex: 1 1 auto;
  min-width: 0;
  overflow-wrap: break-word;
}

.page-faq .faq-jump__go {
  flex: none;
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: .04em;
}

.page-faq .faq-index-label {
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--muted);
  margin-bottom: 12px;
}

.page-faq .faq-index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  grid-template-columns: 1fr;
}

.page-faq .faq-index__item {
  display: block;
  height: 100%;
  padding: 15px 17px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: linear-gradient(158deg, rgba(16, 42, 35, .96), rgba(10, 30, 25, .84));
  color: var(--text);
  text-decoration: none;
  transition: border-color .22s var(--ease), background .22s var(--ease), transform .22s var(--ease);
}

.page-faq .faq-index__item:hover,
.page-faq .faq-index__item:focus-visible {
  border-color: var(--cyan);
  background: linear-gradient(158deg, rgba(23, 60, 50, .96), rgba(10, 30, 25, .9));
  transform: translateY(-2px);
}

.page-faq .faq-index__num {
  display: block;
  font-family: var(--font-num);
  font-feature-settings: "tnum";
  font-size: 26px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--cyan);
}

.page-faq .faq-index__name {
  display: block;
  margin-top: 4px;
  font-weight: 700;
  font-size: 15.5px;
}

.page-faq .faq-index__desc {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 章节 ---------- */

.page-faq .faq-section {
  padding: clamp(42px, 7.5vw, 80px) 0;
  scroll-margin-top: 90px;
}

.page-faq .faq-section--band {
  background: var(--band);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-head {
  margin-bottom: clamp(22px, 4vw, 34px);
  max-width: 62ch;
}

.page-faq .faq-head .eyebrow {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .26em;
  color: var(--cyan);
  margin: 0 0 10px;
}

.page-faq .faq-head h2 {
  font-size: clamp(23px, 4.4vw, 33px);
  margin-bottom: 12px;
}

.page-faq .faq-head p:not(.eyebrow) {
  color: var(--muted);
  font-size: 16px;
}

/* ---------- 图 ---------- */

.page-faq .faq-figure {
  position: relative;
  margin: 0 0 clamp(26px, 4.5vw, 42px);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: linear-gradient(180deg, rgba(15, 58, 49, .55), rgba(6, 19, 16, .92));
}

.page-faq .faq-figure::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--faq-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--faq-grid-line) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
  z-index: 1;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  position: relative;
  z-index: 0;
}

.page-faq .faq-figure figcaption {
  position: relative;
  z-index: 2;
  padding: 11px 18px;
  border-top: 1px solid var(--line);
  background: var(--band);
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 时间轴 ---------- */

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

.page-faq .faq-step {
  position: relative;
  padding-left: 42px;
  margin-bottom: 14px;
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 44px;
  bottom: -14px;
  width: 2px;
  background: linear-gradient(180deg, var(--line), rgba(29, 59, 50, 0));
}

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

.page-faq .faq-step:last-child::before {
  display: none;
}

.page-faq .faq-step__detail {
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--lift);
  transition: border-color .22s var(--ease);
}

.page-faq .faq-step__detail[open] {
  border-color: rgba(44, 232, 196, .5);
  background: linear-gradient(180deg, rgba(23, 60, 50, .78), rgba(16, 42, 35, .95));
}

.page-faq .faq-step summary {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 15px 44px 15px 16px;
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  font-size: 16px;
  line-height: 1.5;
  border-radius: 20px;
}

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

.page-faq .faq-step summary::after {
  content: "";
  position: absolute;
  right: 19px;
  top: 50%;
  width: 9px;
  height: 9px;
  margin-top: -6px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform .22s var(--ease);
}

.page-faq .faq-step__detail[open] summary::after {
  transform: rotate(-135deg);
  margin-top: -3px;
}

.page-faq .faq-step__no {
  position: absolute;
  left: -42px;
  top: 12px;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--cyan);
  color: var(--ink);
  font-family: var(--font-num);
  font-feature-settings: "tnum";
  font-size: 13px;
  font-weight: 700;
  box-shadow: 0 0 0 5px rgba(44, 232, 196, .12);
}

.page-faq .faq-step__title {
  min-width: 0;
  overflow-wrap: break-word;
}

.page-faq .faq-step__body {
  margin: 0 16px 16px 16px;
  padding-left: 14px;
  border-left: 2px solid rgba(44, 232, 196, .45);
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.8;
}

.page-faq .faq-step__body p + p {
  margin-top: 8px;
}

.page-faq .faq-step__key {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 9px;
  border-radius: var(--radius-pill);
  background: rgba(44, 232, 196, .14);
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: .06em;
}

.page-faq .faq-tip {
  margin-top: clamp(22px, 3.5vw, 32px);
  padding: 14px 18px;
  border-left: 3px solid var(--cyan);
  border-radius: 0 16px 16px 0;
  background: rgba(16, 42, 35, .9);
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.75;
}

/* ---------- 问答面板 ---------- */

.page-faq .qa-list {
  display: grid;
  gap: 10px;
}

.page-faq .qa {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--lift);
  transition: border-color .22s var(--ease), background .22s var(--ease);
}

.page-faq .qa[open] {
  border-color: rgba(44, 232, 196, .55);
  background: linear-gradient(180deg, rgba(22, 58, 48, .75), rgba(16, 42, 35, .96));
}

.page-faq .qa > summary {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 16px 48px 16px 18px;
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  font-size: 15.5px;
  line-height: 1.6;
  border-radius: 18px;
  color: var(--text);
}

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

.page-faq .qa > summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 14px;
  font-family: var(--font-num);
  font-size: 21px;
  line-height: 1;
  color: var(--cyan);
  transition: transform .22s var(--ease);
}

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

.page-faq .qa > summary:focus-visible,
.page-faq .faq-step summary:focus-visible {
  outline: 2px solid var(--cyan-hi);
  outline-offset: 2px;
}

.page-faq .qa__body {
  margin: 0 18px 18px 18px;
  padding-left: 14px;
  border-left: 2px solid var(--cyan);
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.85;
}

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

/* ---------- 联系 ---------- */

.page-faq .faq-contact {
  padding-bottom: 0;
}

.page-faq .faq-contact__card {
  position: relative;
  padding: clamp(24px, 5vw, 46px);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background:
    radial-gradient(80% 120% at 100% 0%, rgba(44, 232, 196, .16), transparent 60%),
    linear-gradient(160deg, rgba(16, 42, 35, .96), rgba(10, 30, 25, .92));
  overflow: hidden;
}

.page-faq .faq-contact__card .eyebrow {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .26em;
  color: var(--orange);
  margin: 0 0 10px;
}

.page-faq .faq-contact__card h2 {
  font-size: clamp(22px, 4.2vw, 31px);
  max-width: 20em;
  margin-bottom: 12px;
}

.page-faq .faq-contact__lede {
  color: var(--muted);
  max-width: 60ch;
  font-size: 15.5px;
  margin-bottom: 24px;
}

.page-faq .faq-contact__list {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-contact__list li {
  display: grid;
  gap: 2px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(6, 19, 16, .55);
}

.page-faq .faq-contact__list .contact-key {
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--muted);
}

.page-faq .faq-contact__list .contact-val {
  font-family: var(--font-num);
  font-feature-settings: "tnum";
  font-size: 16px;
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-contact__actions .btn {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 700;
  border: 1px solid transparent;
  transition: transform .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease);
}

.page-faq .faq-contact__actions .btn-solid {
  background: var(--cyan);
  color: var(--ink);
}

.page-faq .faq-contact__actions .btn-solid:hover {
  background: var(--cyan-hi);
  transform: translateY(-2px);
}

.page-faq .faq-contact__actions .btn-ghost {
  border-color: var(--line);
  color: var(--text);
  background: transparent;
}

.page-faq .faq-contact__actions .btn-ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translateY(-2px);
}

/* ---------- 响应式 ---------- */

@media (min-width: 560px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 820px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-contact__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-contact__list li:nth-child(3) {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-faq .faq-index__num {
    font-size: 30px;
  }

  .page-faq .faq-step summary {
    font-size: 17px;
    padding: 16px 48px 16px 18px;
  }

  .page-faq .faq-step__body {
    font-size: 16px;
  }

  .page-faq .qa__body,
  .page-faq .qa > summary {
    font-size: 16px;
  }
}

@media (max-width: 420px) {
  .page-faq .faq-jump__go {
    display: none;
  }

  .page-faq .faq-step {
    padding-left: 34px;
  }

  .page-faq .faq-step__no {
    left: -34px;
    width: 26px;
    height: 26px;
    font-size: 11px;
  }

  .page-faq .faq-step::before {
    left: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__item,
  .page-faq .faq-jump,
  .page-faq .qa,
  .page-faq .faq-step__detail,
  .page-faq .faq-contact__actions .btn {
    transition: none;
  }

  .page-faq .faq-index__item:hover,
  .page-faq .faq-jump:hover,
  .page-faq .faq-contact__actions .btn:hover {
    transform: none;
  }
}