/* ============================================================
   支持中心 /support/ — 页面专属样式（移动优先）
   ============================================================ */

.page-faq {
  --faq-grid: 64px;
  --faq-text: 620px;
  position: relative;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--cloud);
  background: var(--ink);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 24px 0 46px;
  border-bottom: 2px solid var(--line-strong);
  background:
    radial-gradient(120% 110% at 92% -14%, rgba(168, 107, 255, 0.34), transparent 60%),
    radial-gradient(80% 90% at 2% 108%, rgba(53, 230, 214, 0.2), transparent 62%),
    linear-gradient(158deg, var(--ink) 0%, var(--ink-2) 56%, var(--teal) 100%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(53, 230, 214, 0.075) 1px, transparent 1px),
    linear-gradient(90deg, rgba(53, 230, 214, 0.075) 1px, transparent 1px);
  background-size: var(--faq-grid) var(--faq-grid);
  pointer-events: none;
}

.page-faq .faq-hero__slice {
  position: absolute;
  z-index: 0;
  left: -14%;
  right: -14%;
  bottom: -104px;
  height: 180px;
  background: linear-gradient(90deg, var(--wine), var(--indigo) 68%, rgba(42, 26, 94, 0));
  transform: rotate(-6deg);
  opacity: 0.6;
  pointer-events: none;
}

.page-faq .faq-hero > .wrap {
  position: relative;
  z-index: 1;
}

.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-faq .breadcrumb li {
  display: inline-flex;
  align-items: center;
}

.page-faq .breadcrumb li + li::before {
  content: "/";
  margin: 0 10px;
  color: rgba(157, 176, 204, 0.45);
}

.page-faq .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-faq .faq-hero__kicker {
  margin: 0 0 14px;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  max-width: 16ch;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(30px, 7vw, 58px);
  line-height: 1.08;
  letter-spacing: 0.04em;
  color: var(--cloud);
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: var(--faq-text);
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
  border: 2px solid var(--line-strong);
  background: rgba(53, 230, 214, 0.22);
}

.page-faq .faq-stat {
  padding: 14px 16px 16px;
  background: rgba(7, 18, 42, 0.86);
}

.page-faq .faq-stat__num {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(24px, 5vw, 34px);
  line-height: 1.05;
  letter-spacing: 0.02em;
  color: var(--gold);
}

.page-faq .faq-stat__label {
  display: block;
  margin-top: 6px;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

/* ---------- 分区与标题 ---------- */
.page-faq .faq-block {
  padding: 50px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-block--teal {
  background: linear-gradient(180deg, rgba(7, 34, 43, 0.92), rgba(7, 34, 43, 0.42));
}

.page-faq .faq-block--indigo {
  background: linear-gradient(180deg, rgba(42, 26, 94, 0.78), rgba(42, 26, 94, 0.28));
}

.page-faq .faq-block--wine {
  background: linear-gradient(180deg, rgba(94, 27, 51, 0.74), rgba(94, 27, 51, 0.26));
}

.page-faq .faq-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 16px;
  row-gap: 4px;
  align-items: end;
  margin-bottom: 26px;
}

.page-faq .faq-head__num {
  grid-row: span 2;
  align-self: end;
  font-family: var(--font-num);
  font-size: clamp(36px, 9vw, 62px);
  line-height: 0.86;
  letter-spacing: 0.02em;
  color: rgba(53, 230, 214, 0.24);
  -webkit-text-stroke: 1px rgba(53, 230, 214, 0.72);
}

.page-faq .faq-head__kicker {
  margin: 0;
  font-family: var(--font-num);
  font-size: 10.5px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-head h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(22px, 4.6vw, 34px);
  line-height: 1.22;
  letter-spacing: 0.04em;
  color: var(--cloud);
}

.page-faq .faq-intro {
  margin: 0 0 24px;
  max-width: var(--faq-text);
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-intro a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .faq-intro a:hover,
.page-faq .faq-intro a:focus-visible {
  border-bottom-color: var(--gold);
  color: var(--gold);
}

/* ---------- 快速索引 ---------- */
.page-faq .faq-index {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .faq-index__item {
  position: relative;
  display: block;
  padding: 20px 20px 22px;
  border: 2px solid var(--line-violet);
  background: rgba(8, 18, 44, 0.68);
  color: inherit;
  text-decoration: none;
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-index__item::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 22px;
  height: 22px;
  background: linear-gradient(135deg, transparent 48%, var(--cyan) 48%);
  opacity: 0.8;
}

.page-faq .faq-index__item:hover,
.page-faq .faq-index__item:focus-visible {
  transform: translateY(-4px);
  border-color: var(--cyan);
  background: rgba(13, 29, 66, 0.92);
}

.page-faq .faq-index__num {
  display: block;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--violet);
}

.page-faq .faq-index__title {
  display: block;
  margin-top: 10px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: 0.04em;
  color: var(--cloud);
}

.page-faq .faq-index__desc {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 五步流程 ---------- */
.page-faq .faq-steps {
  display: grid;
  gap: 12px;
  margin: 0 0 30px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 12px;
  padding: 18px 18px 18px 16px;
  border: 2px solid var(--line);
  border-left: 4px solid var(--cyan);
  background: rgba(4, 14, 34, 0.58);
  transition: background 0.2s ease, border-left-color 0.2s ease;
}

.page-faq .faq-step:hover {
  background: rgba(13, 29, 66, 0.8);
  border-left-color: var(--gold);
}

.page-faq .faq-step__num {
  font-family: var(--font-num);
  font-size: 32px;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-faq .faq-step__title {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.4;
  letter-spacing: 0.03em;
  color: var(--cloud);
}

.page-faq .faq-step__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 图片框 ---------- */
.page-faq .faq-figure {
  margin: 0 0 28px;
  border: 2px solid var(--line-strong);
  background: linear-gradient(135deg, rgba(42, 26, 94, 0.55), rgba(7, 34, 43, 0.6));
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

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

.page-faq .faq-figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 手风琴问答 ---------- */
.page-faq .faq-acc {
  counter-reset: faqq;
  border-top: 2px solid var(--line-strong);
}

.page-faq .faq-item {
  counter-increment: faqq;
  border-bottom: 2px solid var(--line);
  border-left: 4px solid transparent;
  background: rgba(8, 18, 44, 0.46);
  transition: background 0.2s ease, border-left-color 0.2s ease;
}

.page-faq .faq-item[open] {
  border-left-color: var(--cyan);
  background: rgba(13, 29, 66, 0.84);
}

.page-faq .faq-item summary {
  position: relative;
  display: block;
  padding: 17px 50px 17px 50px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.55;
  letter-spacing: 0.02em;
  color: var(--cloud);
}

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

.page-faq .faq-item summary::before {
  content: counter(faqq, decimal-leading-zero);
  position: absolute;
  left: 14px;
  top: 18px;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--violet);
}

.page-faq .faq-item summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-num);
  font-size: 22px;
  line-height: 1;
  color: var(--cyan);
}

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

.page-faq .faq-item summary:hover,
.page-faq .faq-item summary:focus-visible {
  color: var(--cyan);
  outline: none;
  box-shadow: inset 0 0 0 2px var(--cyan);
}

.page-faq .faq-item__body {
  padding: 0 50px 20px 50px;
}

.page-faq .faq-item__body p {
  margin: 0;
  max-width: var(--faq-text);
  font-size: 14.5px;
  line-height: 1.88;
  color: var(--mist);
}

/* ---------- 兼容性图例 ---------- */
.page-faq .faq-legend {
  display: grid;
  gap: 10px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-legend li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-legend__mark {
  flex: 0 0 auto;
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .faq-legend__mark--ok {
  color: var(--cyan);
}

.page-faq .faq-legend__mark--mid {
  color: var(--gold);
}

.page-faq .faq-legend__mark--bad {
  color: var(--amber);
}

.page-faq .notice {
  margin: 0;
  max-width: var(--faq-text);
  font-size: 14px;
  line-height: 1.8;
}

/* ---------- 安全提示 ---------- */
.page-faq .faq-tips {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-tip {
  padding: 20px 20px 22px;
  border: 2px solid var(--line);
  border-top: 4px solid var(--gold);
  background: rgba(10, 22, 51, 0.66);
}

.page-faq .faq-tip h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 16.5px;
  letter-spacing: 0.03em;
  color: var(--cloud);
}

.page-faq .faq-tip p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--mist);
}

.page-faq .faq-tip a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .faq-tip a:hover,
.page-faq .faq-tip a:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* ---------- 联系区 ---------- */
.page-faq .faq-help {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: start;
}

.page-faq .faq-help__copy p {
  margin: 0 0 16px;
  max-width: var(--faq-text);
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-help__card {
  padding: 22px 20px 24px;
  border: 2px solid var(--gold);
  background: linear-gradient(160deg, rgba(42, 26, 94, 0.78), rgba(10, 22, 51, 0.92));
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-help__label {
  margin: 0 0 6px;
  font-family: var(--font-num);
  font-size: 10.5px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-help__value {
  margin: 0 0 18px;
  font-family: var(--font-num);
  font-size: 16px;
  letter-spacing: 0.03em;
  line-height: 1.5;
  color: var(--cloud);
  word-break: break-all;
}

.page-faq .faq-help__value:last-of-type {
  margin-bottom: 22px;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 38px 0 62px;
  }

  .page-faq .faq-hero__lead {
    font-size: 16.5px;
  }

  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: 40px;
  }

  .page-faq .faq-block {
    padding: 66px 0;
  }

  .page-faq .faq-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-faq .faq-step {
    grid-template-columns: 58px minmax(0, 1fr);
    gap: 20px;
    padding: 22px 26px 22px 22px;
  }

  .page-faq .faq-step__num {
    font-size: 38px;
  }

  .page-faq .faq-tips {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-faq .faq-help {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 30px;
  }

  .page-faq .faq-item summary {
    font-size: 17px;
    padding: 19px 58px 19px 58px;
  }

  .page-faq .faq-item__body {
    padding: 0 58px 22px 58px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1040px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-hero h1 {
    max-width: 18ch;
  }

  .page-faq .faq-figure {
    margin-bottom: 32px;
  }
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    transform: none !important;
  }
}