/* ============================================================
   答疑中心 — /answers/
   作用域：.page-faq
   ============================================================ */

.page-faq {
  --faq-idx: 268px;
  --faq-gap: 56px;
  --faq-r: 3px;
  position: relative;
  padding-bottom: var(--sp-6);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: var(--sp-5) 0 var(--sp-4);
  border-bottom: 2px solid var(--ink);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: var(--sp-4);
}

.page-faq .faq-hero__lead {
  max-width: 720px;
  min-width: 0;
}

.page-faq .faq-hero__lead h1 {
  margin: 10px 0 16px;
  font-size: clamp(32px, 6.2vw, 62px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-faq .faq-hero__lead .lede {
  margin: 0;
  max-width: 42ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-hero__note {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-hero__note a {
  color: var(--blue-deep);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-hero__note a:hover {
  color: var(--orange-deep);
}

/* 深墨看板：先记住这三条 */
.page-faq .faq-hero__aside {
  position: relative;
  overflow: hidden;
  padding: 22px 22px 20px;
  background: var(--ink);
  border: 2px solid var(--ink);
  border-radius: var(--faq-r);
  color: var(--paper);
}

.page-faq .faq-hero__aside::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, rgba(255, 106, 26, 0.30) 0%, rgba(255, 106, 26, 0) 52%);
  pointer-events: none;
}

.page-faq .faq-hero__aside > * {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__aside-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--neon);
}

.page-faq .faq-hero__facts {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-faq .faq-hero__facts li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-inv);
}

.page-faq .faq-hero__facts li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-hero__k {
  font-size: 13px;
  color: rgba(247, 242, 231, 0.72);
}

.page-faq .faq-hero__v {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--neon);
  text-shadow: 0 0 12px rgba(195, 255, 63, 0.45);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: var(--sp-4);
  padding-top: var(--sp-5);
}

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

/* ---------- 左侧分组索引 ---------- */
.page-faq .faq-index {
  min-width: 0;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--orange-deep);
}

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

.page-faq .faq-index__list li {
  flex: none;
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 13px;
  border: 2px solid var(--line-2);
  border-radius: var(--faq-r);
  background: var(--white);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--ink-2);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.18s ease, background 0.18s ease, color 0.18s ease, transform 0.18s ease;
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  border-color: var(--ink);
  background: var(--paper-3);
  color: var(--ink);
  transform: translateX(2px);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--orange-deep);
}

.page-faq .faq-index__foot {
  margin-top: 4px;
}

.page-faq .faq-index__cta {
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  border: 2px solid var(--ink);
  border-radius: var(--faq-r);
  background: var(--orange);
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 4px 4px 0 rgba(16, 18, 22, 0.16);
  transition: transform 0.16s ease, box-shadow 0.16s ease;
}

.page-faq .faq-index__cta:hover {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 rgba(16, 18, 22, 0.16);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  margin: 0 0 var(--sp-5);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-group:last-of-type {
  margin-bottom: var(--sp-4);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.page-faq .faq-group__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
  text-shadow: 0 0 14px rgba(255, 106, 26, 0.40);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(19px, 2.4vw, 26px);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.25;
  color: var(--ink);
}

.page-faq .faq-group__rule {
  flex: 1 1 auto;
  min-width: 20px;
  height: 2px;
  background: linear-gradient(90deg, var(--ink) 0%, rgba(16, 18, 22, 0.08) 100%);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 16px;
  border: 2px solid var(--ink);
  border-radius: var(--faq-r);
  background: var(--paper-2);
  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: 10px 14px;
  border-top: 2px solid var(--ink);
  background: var(--paper-2);
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 问答条 ---------- */
.page-faq .q {
  margin-bottom: 10px;
  border: 2px solid var(--line-2);
  border-radius: var(--faq-r);
  background: var(--white);
  transition: border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

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

.page-faq .q[open] {
  border-color: var(--ink);
  background: var(--white);
  box-shadow: 4px 4px 0 rgba(16, 18, 22, 0.10);
}

.page-faq .q-summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

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

.page-faq .q-summary::marker {
  content: "";
}

.page-faq .q-summary:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

.page-faq .q-num {
  flex: none;
  padding: 3px 7px;
  border-radius: 2px;
  background: var(--paper-3);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--orange-deep);
  transition: background 0.18s ease, color 0.18s ease;
}

.page-faq .q[open] .q-num {
  background: var(--orange);
  color: var(--white);
}

.page-faq .q-text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .q-caret {
  flex: none;
  width: 9px;
  height: 9px;
  margin-left: auto;
  border-right: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(45deg) translateY(-2px);
  transition: transform 0.22s ease;
}

.page-faq .q[open] .q-caret {
  transform: rotate(225deg) translateY(-2px);
}

.page-faq .q-body {
  padding: 0 16px 18px;
  animation: faqQIn 220ms ease both;
}

.page-faq .q-body p {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .q-body a {
  color: var(--blue-deep);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .q-body a:hover {
  color: var(--orange-deep);
}

@keyframes faqQIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 收尾看板 ---------- */
.page-faq .faq-outro {
  position: relative;
  overflow: hidden;
  margin-top: var(--sp-5);
  padding: var(--sp-5) var(--sp-4);
  background: var(--ink);
  border-radius: var(--faq-r);
  color: var(--paper);
}

.page-faq .faq-outro::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 52%;
  height: 100%;
  background: linear-gradient(110deg, rgba(255, 106, 26, 0.34) 0%, rgba(255, 106, 26, 0) 100%);
  pointer-events: none;
  animation: faqSweep 9s linear infinite;
}

.page-faq .faq-outro > * {
  position: relative;
  z-index: 1;
}

.page-faq .faq-outro h2 {
  margin: 0 0 12px;
  font-size: clamp(24px, 3.4vw, 38px);
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.2;
  color: var(--white);
}

.page-faq .faq-outro p {
  margin: 0 0 22px;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: rgba(247, 242, 231, 0.74);
}

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

.page-faq .faq-cta {
  display: inline-flex;
  align-items: center;
  padding: 12px 22px;
  border: 2px solid transparent;
  border-radius: var(--faq-r);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.16s ease, box-shadow 0.16s ease, background 0.16s ease, border-color 0.16s ease;
}

.page-faq .faq-cta--solid {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink);
  box-shadow: 4px 4px 0 rgba(195, 255, 63, 0.30);
}

.page-faq .faq-cta--solid:hover {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 rgba(195, 255, 63, 0.30);
}

.page-faq .faq-cta--line {
  background: transparent;
  border-color: rgba(247, 242, 231, 0.38);
  color: var(--paper);
}

.page-faq .faq-cta--line:hover {
  background: rgba(247, 242, 231, 0.10);
  border-color: var(--paper);
}

@keyframes faqSweep {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(220%);
  }
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1fr) 320px;
    align-items: end;
    gap: var(--sp-5);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-idx) minmax(0, 1fr);
    gap: var(--faq-gap);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 6px;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-faq .faq-index__list li {
    width: 100%;
  }

  .page-faq .faq-index__list a {
    width: 100%;
    white-space: normal;
  }

  .page-faq .faq-index__foot {
    margin-top: 18px;
  }

  .page-faq .q-body {
    padding-left: 62px;
  }
}

/* ---------- 窄屏收紧 ---------- */
@media (max-width: 560px) {
  .page-faq .faq-hero {
    padding-top: var(--sp-4);
  }

  .page-faq .faq-group__num {
    font-size: 18px;
  }

  .page-faq .q-summary {
    gap: 10px;
    padding: 14px 14px;
    font-size: 15px;
  }

  .page-faq .q-body {
    padding: 0 14px 16px;
  }

  .page-faq .faq-outro {
    padding: var(--sp-4) var(--sp-3);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-outro::before {
    animation: none;
  }

  .page-faq .q-body {
    animation: none;
  }

  .page-faq .q-caret,
  .page-faq .q,
  .page-faq .q-num,
  .page-faq .faq-index__list a,
  .page-faq .faq-index__cta,
  .page-faq .faq-cta {
    transition: none;
  }
}