/* ===== 答疑中心 / page-faq ===== */

.page-faq {
  --faq-pad-x: clamp(16px, 5vw, 64px);
  --faq-card-pad: clamp(16px, 2vw, 24px);
  --faq-anchor: calc(var(--topbar-h, 64px) + 22px);
  color: var(--frost);
  background: var(--abyss);
}

.page-faq .faq-wrap {
  max-width: 1240px;
  margin: 0 auto;
  padding-left: var(--faq-pad-x);
  padding-right: var(--faq-pad-x);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(36px, 6vw, 76px) 0 clamp(30px, 4vw, 52px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 100% at 88% 0%, rgba(62, 232, 214, 0.13), transparent 62%),
    radial-gradient(90% 80% at 4% 100%, rgba(246, 184, 74, 0.09), transparent 62%),
    linear-gradient(152deg, var(--abyss) 0%, var(--violet) 66%, var(--abyss) 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -90px;
  top: -70px;
  width: 320px;
  height: 320px;
  border: 1px solid rgba(62, 232, 214, 0.16);
  border-radius: 50%;
  pointer-events: none;
}

.page-faq .faq-hero__eyebrow {
  margin: 18px 0 12px;
  font-size: 12.5px;
  letter-spacing: .14em;
  color: var(--neon);
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  max-width: 17em;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(28px, 5.2vw, 52px);
  line-height: 1.17;
  letter-spacing: -.02em;
  color: var(--frost);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(15.5px, 1.5vw, 17.5px);
  line-height: 1.8;
  color: var(--steel);
}

.page-faq .faq-hero__stats {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
  margin: 26px 0 0;
  padding: 0;
}

.page-faq .faq-hero__stats li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 15px;
  font-size: 13.5px;
  color: var(--steel);
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(11, 22, 48, 0.72);
}

.page-faq .faq-hero__stats .mono {
  font-size: 14.5px;
  color: var(--neon);
}

/* ---------- 布局骨架 ---------- */

.page-faq .faq-body {
  padding-top: clamp(30px, 4vw, 52px);
  padding-bottom: clamp(42px, 6vw, 82px);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 4vw, 44px);
}

.page-faq .faq-main {
  min-width: 0;
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 252px;
    align-items: start;
  }
}

/* ---------- 侧栏 ---------- */

.page-faq .faq-side {
  min-width: 0;
}

.page-faq .faq-side__inner {
  padding: 18px 16px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(26, 17, 54, 0.82), rgba(11, 22, 48, 0.94));
}

@media (min-width: 1024px) {
  .page-faq .faq-side {
    position: sticky;
    top: var(--faq-anchor);
  }
}

.page-faq .faq-side__label {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--steel);
}

.page-faq .faq-nav {
  display: grid;
  gap: 2px;
}

.page-faq .faq-nav a {
  display: block;
  padding: 8px 10px 8px 12px;
  border-left: 2px solid transparent;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--steel);
  text-decoration: none;
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}

.page-faq .faq-nav a:hover,
.page-faq .faq-nav a.is-active {
  color: var(--frost);
  border-left-color: var(--neon);
  background: rgba(62, 232, 214, 0.07);
}

.page-faq .faq-side__note {
  display: grid;
  gap: 5px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--steel);
}

.page-faq .faq-side__note strong {
  color: var(--amber);
  font-size: 13.5px;
}

/* ---------- 章节通用 ---------- */

.page-faq .faq-section {
  padding-bottom: clamp(34px, 4.5vw, 58px);
  scroll-margin-top: var(--faq-anchor);
}

.page-faq .faq-section:last-of-type {
  padding-bottom: clamp(24px, 3vw, 36px);
}

.page-faq .faq-section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-kicker {
  display: inline-block;
  flex: none;
  margin: 0;
  padding: 4px 11px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--neon);
  border: 1px solid rgba(62, 232, 214, 0.4);
  border-radius: 999px;
  background: rgba(62, 232, 214, 0.08);
}

.page-faq .faq-h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(20px, 2.4vw, 27px);
  line-height: 1.32;
  letter-spacing: -.015em;
  color: var(--frost);
}

.page-faq .faq-intro {
  margin: 0 0 20px;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--steel);
}

/* ---------- 分类索引卡片 ---------- */

.page-faq .faq-index {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 26px;
}

@media (min-width: 620px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-faq .faq-index__card {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "num title"
    "count count"
    "desc desc";
  gap: 6px 10px;
  padding: 20px 16px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow-panel);
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  transition: border-color var(--ease), background var(--ease), transform var(--ease);
}

.page-faq .faq-index__card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--neon);
}

.page-faq .faq-index__card:nth-child(2)::before { background: var(--amber); }
.page-faq .faq-index__card:nth-child(3)::before { background: var(--fresh); }
.page-faq .faq-index__card:nth-child(4)::before { background: var(--steel); }

.page-faq .faq-index__card:hover {
  border-color: rgba(246, 184, 74, 0.6);
  background: linear-gradient(180deg, rgba(43, 30, 85, 0.62), var(--panel));
  transform: translateY(-2px);
}

.page-faq .faq-index__num {
  grid-area: num;
  font-size: 12.5px;
  line-height: 1.9;
  letter-spacing: .08em;
  color: var(--neon);
}

.page-faq .faq-index__title {
  grid-area: title;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--frost);
}

.page-faq .faq-index__count {
  grid-area: count;
  font-size: 13px;
  color: var(--amber);
}

.page-faq .faq-index__desc {
  grid-area: desc;
  font-size: 14px;
  line-height: 1.68;
  color: var(--steel);
}

/* ---------- 图片 ---------- */

.page-faq .faq-figure {
  margin: 0 0 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(43, 30, 85, 0.55), rgba(11, 22, 48, 0.9));
  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 14px;
  border-top: 1px solid var(--line);
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--steel);
}

/* ---------- 折叠问答 ---------- */

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

.page-faq .faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
  transition: border-color var(--ease), background var(--ease);
}

.page-faq .faq-item[open] {
  border-color: rgba(62, 232, 214, 0.42);
  background: linear-gradient(180deg, rgba(43, 30, 85, 0.5), var(--panel));
}

.page-faq .faq-item__q {
  position: relative;
  display: block;
  padding: 15px 46px 15px 56px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  line-height: 1.65;
  color: var(--frost);
  transition: color var(--ease);
  -webkit-tap-highlight-color: transparent;
}

.page-faq .faq-item__q::-webkit-details-marker { display: none; }
.page-faq .faq-item__q::marker { content: ""; }

.page-faq .faq-item__q::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 3px;
  background: var(--neon);
  transform: scaleY(0);
  transform-origin: 50% 0;
  transition: transform var(--ease);
}

.page-faq .faq-item[open] .faq-item__q::before {
  transform: scaleY(1);
}

.page-faq .faq-item__q::after {
  content: "+";
  position: absolute;
  top: 15px;
  right: 18px;
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1;
  color: var(--neon);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "\2212";
  color: var(--amber);
}

.page-faq .faq-item__q:hover {
  color: #ffffff;
}

.page-faq .faq-item__id {
  position: absolute;
  top: 18px;
  left: 18px;
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--neon);
}

.page-faq .faq-item[open] .faq-item__id {
  color: var(--amber);
}

.page-faq .faq-item__text {
  display: block;
  min-width: 0;
}

.page-faq .faq-item__a {
  padding: 0 20px 18px 56px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--steel);
}

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

/* ---------- 字段表 ---------- */

.page-faq .faq-table-wrap {
  margin: 0 0 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 14.5px;
}

.page-faq .faq-table th {
  padding: 14px 16px;
  text-align: left;
  white-space: nowrap;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--frost);
  background: var(--violet);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-table td {
  height: 56px;
  padding: 16px;
  vertical-align: top;
  line-height: 1.65;
  color: var(--steel);
  border-bottom: 1px solid rgba(53, 69, 110, 0.55);
}

.page-faq .faq-table tbody tr {
  transition: background 120ms linear;
}

.page-faq .faq-table tbody tr:hover {
  background: var(--violet-lift);
}

.page-faq .faq-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .faq-table td:first-child {
  white-space: nowrap;
  color: var(--neon);
  font-weight: 600;
}

/* ---------- 读表顺序 ---------- */

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

.page-faq .faq-order li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 15px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(11, 22, 48, 0.72);
}

.page-faq .faq-order__num {
  font-size: 15px;
  line-height: 1.62;
  color: var(--neon);
}

.page-faq .faq-order__t {
  margin: 0 0 4px;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--frost);
}

.page-faq .faq-order__d {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--steel);
}

/* ---------- 联系渠道 ---------- */

.page-faq .faq-channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

@media (min-width: 780px) {
  .page-faq .faq-channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-faq .faq-channel {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(170deg, rgba(26, 17, 54, 0.78), var(--panel));
  box-shadow: var(--shadow-panel);
}

.page-faq .faq-channel__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--amber);
}

.page-faq .faq-channel__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--frost);
  word-break: break-word;
}

.page-faq .faq-channel__desc {
  flex: 1;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--steel);
}

.page-faq .faq-channel__act {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 4px;
}

.page-faq .faq-channel__status {
  font-size: 13px;
  color: var(--neon);
}

.page-faq .faq-note {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--amber);
  font-size: 14px;
  line-height: 1.72;
  color: var(--steel);
}

/* ---------- 按钮 ---------- */

.page-faq .faq-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid var(--amber);
  border-radius: var(--radius);
  background: rgba(246, 184, 74, 0.13);
  color: var(--amber);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--ease), box-shadow var(--ease), color var(--ease);
}

.page-faq .faq-btn:hover {
  background: rgba(246, 184, 74, 0.24);
  box-shadow: 0 0 0 2px rgba(246, 184, 74, 0.26);
}

.page-faq .faq-btn--ghost {
  padding: 8px 14px;
  font-size: 13.5px;
  font-weight: 600;
  border-color: var(--line);
  background: transparent;
  color: var(--frost);
}

.page-faq .faq-btn--ghost:hover {
  border-color: var(--amber);
  color: var(--amber);
  background: rgba(246, 184, 74, 0.1);
  box-shadow: 0 0 0 2px rgba(246, 184, 74, 0.16);
}

/* ---------- 结尾行动区 ---------- */

.page-faq .faq-cta {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 3.4vw, 40px);
  border: 1px solid rgba(246, 184, 74, 0.45);
  border-radius: var(--radius);
  background:
    radial-gradient(110% 130% at 100% 0%, rgba(246, 184, 74, 0.16), transparent 58%),
    linear-gradient(160deg, rgba(26, 17, 54, 0.9), rgba(11, 22, 48, 0.96));
}

.page-faq .faq-cta .faq-kicker {
  color: var(--amber);
  border-color: rgba(246, 184, 74, 0.45);
  background: rgba(246, 184, 74, 0.1);
}

.page-faq .faq-cta .faq-h2 {
  margin-top: 14px;
}

.page-faq .faq-cta__text {
  margin: 12px 0 22px;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--steel);
}

/* ---------- 延伸阅读 ---------- */

.page-faq .faq-more {
  margin-top: clamp(26px, 4vw, 44px);
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--steel);
}

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

.page-faq .faq-more a {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(62, 232, 214, 0.4);
  transition: color var(--ease), border-color var(--ease);
}

.page-faq .faq-more a:hover {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

/* ---------- 入场动效 ---------- */

@keyframes faqRise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-faq [data-reveal] {
  animation: faqRise 0.5s cubic-bezier(0.4, 0, 0.2, 1) both;
  animation-timeline: view();
  animation-range: entry 0% entry 100%;
}

@media (prefers-reduced-motion: reduce) {
  .page-faq [data-reveal] {
    animation: none;
  }
  .page-faq .faq-index__card,
  .page-faq .faq-item,
  .page-faq .faq-item__q::before {
    transition: none;
  }
}

/* ---------- 窄屏收紧 ---------- */

@media (max-width: 460px) {
  .page-faq .faq-hero__title {
    font-size: 26px;
  }

  .page-faq .faq-item__q {
    padding: 14px 40px 14px 52px;
    font-size: 15px;
  }

  .page-faq .faq-item__id {
    top: 17px;
    left: 14px;
    font-size: 12px;
  }

  .page-faq .faq-item__q::after {
    top: 13px;
    right: 14px;
  }

  .page-faq .faq-item__a {
    padding: 0 16px 16px 52px;
    font-size: 15px;
  }

  .page-faq .faq-order li {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 10px;
    padding: 14px 15px;
  }

  .page-faq .faq-channel__value {
    font-size: 13.5px;
  }
}