/* ══════════════ 使用指南 /guide/ ══════════════ */
.page-faq {
  --faq-gap: clamp(2.75rem, 7vw, 5.5rem);
  --faq-side: 258px;
  position: relative;
  display: block;
  overflow-x: clip;
  padding-bottom: clamp(2.5rem, 6vw, 4.5rem);
  color: var(--ink);
  font-family: var(--font-body);
  background:
    radial-gradient(85% 55% at 92% -8%, rgba(15, 42, 34, 0.92) 0%, rgba(11, 15, 13, 0) 62%),
    var(--carbon);
}

.page-faq .breadcrumb {
  padding: 1.1rem 0 0;
}

/* ── 首屏 ── */
.page-faq .faq-hero {
  display: grid;
  gap: 2.25rem;
  padding: clamp(1.5rem, 4vw, 2.75rem) 0 clamp(2.25rem, 5vw, 3.5rem);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero h1 {
  margin: 0.7rem 0 1rem;
  max-width: 21ch;
  font-family: var(--font-display);
  font-size: clamp(1.95rem, 5.6vw, 3.4rem);
  font-weight: 800;
  line-height: 1.07;
  letter-spacing: -0.012em;
}

.page-faq .faq-hero .lead {
  margin: 0 0 1.75rem;
  max-width: 54ch;
  color: var(--ink-2);
  font-size: 1rem;
  line-height: 1.9;
}

.page-faq .faq-hero__panel {
  align-self: start;
  padding: 1.1rem 1.15rem 1rem;
  border: 1px solid var(--line);
  background: var(--glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-faq .faq-hero__panel-title {
  margin: 0 0 0.6rem;
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
}

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

.page-faq .route-list__item {
  border-top: 1px solid var(--line-soft);
}

.page-faq .route-list__item:first-child {
  border-top: 0;
}

.page-faq .route-list__link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.6rem 0.15rem;
  color: var(--ink);
  font-size: 0.92rem;
  text-decoration: none;
  transition: color 0.18s ease, padding-left 0.18s ease;
}

.page-faq .route-list__link:hover,
.page-faq .route-list__link:focus-visible {
  padding-left: 0.55rem;
  color: var(--cyan);
}

.page-faq .route-list__path {
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

/* ── 快速开始 ── */
.page-faq .faq-start {
  padding: var(--faq-gap) 0 0;
}

.page-faq .start-grid {
  display: grid;
  gap: 2.5rem;
  margin-top: 2rem;
}

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

.page-faq .step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.35rem 1.1rem;
  padding: 1.4rem 0;
  border-top: 1px solid var(--line);
}

.page-faq .step:last-child {
  border-bottom: 1px solid var(--line);
}

.page-faq .step__num {
  padding-top: 0.28rem;
  color: var(--signal);
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 600;
  line-height: 1;
}

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

.page-faq .step__title {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: 1.28rem;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.page-faq .step__body {
  margin: 0;
  color: var(--ink-2);
  font-size: 0.97rem;
  line-height: 1.88;
}

.page-faq .start-media {
  margin: 0;
}

.page-faq .phone-frame {
  padding: 0.7rem;
  border: 1px solid var(--line);
  background: linear-gradient(158deg, var(--green-900) 0%, var(--carbon) 72%);
  clip-path: polygon(0 0, 100% 0, 100% 92%, 92% 100%, 0 100%);
}

.page-faq .phone-frame img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% 95%, 95% 100%, 0 100%);
}

.page-faq .phone-frame__cap,
.page-faq .fix-media__cap {
  display: block;
  padding-top: 0.7rem;
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
}

/* ── 常见问题 / 分段切换 ── */
.page-faq .faq-answers {
  padding: var(--faq-gap) 0 0;
}

.page-faq .tabs {
  display: grid;
  gap: 2rem;
  margin-top: 2rem;
}

.page-faq .tabs__list {
  display: flex;
  gap: 0.4rem;
  overflow-x: auto;
  padding: 0 0 0.5rem;
  border-bottom: 1px solid var(--line);
  scrollbar-width: thin;
}

.page-faq .tabs__btn {
  flex: 0 0 auto;
  width: auto;
  margin: 0;
  padding: 0.7rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--glass);
  color: var(--ink-2);
  font-family: var(--font-display);
  font-size: 0.98rem;
  letter-spacing: 0.3px;
  text-align: left;
  white-space: nowrap;
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.page-faq .tabs__btn:hover {
  color: var(--ink);
  border-color: var(--line-soft);
  background: var(--glass-strong);
}

.page-faq .tabs__btn[aria-selected="true"] {
  color: var(--ink);
  border-color: var(--signal);
  background: linear-gradient(120deg, rgba(255, 107, 44, 0.18), rgba(15, 42, 34, 0.5));
}

.page-faq .tabs__btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .tabs__idx {
  margin-right: 0.5rem;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

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

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

.page-faq .tabs__panel[hidden] {
  display: none;
}

.page-faq .tabs__panel:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 6px;
}

.page-faq .panel-title {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.005em;
}

.page-faq .panel-link {
  margin: 1.6rem 0 0;
}

/* 折叠问答 */
.page-faq .qa {
  border-top: 1px solid var(--line-soft);
}

.page-faq .qa:first-of-type {
  border-top: 0;
}

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  padding: 1rem 0;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1.04rem;
  font-weight: 700;
  letter-spacing: 0.2px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__q::before {
  content: "+";
  color: var(--signal);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  line-height: 1;
}

.page-faq .qa[open] .qa__q::before {
  content: "−";
  color: var(--cyan);
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .qa__a {
  margin: 0;
  padding: 0 0 1.15rem 1.6rem;
  color: var(--ink-2);
  font-size: 0.96rem;
  line-height: 1.88;
}

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

.page-faq .qa__a strong {
  color: var(--ink);
}

.page-faq .mail-link {
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.92em;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .fix-media {
  margin: 1.75rem 0 0;
}

.page-faq .fix-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border: 1px solid var(--line);
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

/* ── 常用场景 ── */
.page-faq .scene-grid {
  display: grid;
  gap: 1.6rem;
  margin-top: 1.5rem;
}

.page-faq .scene {
  padding-top: 1rem;
  border-top: 2px solid var(--line);
  transition: border-color 0.2s ease;
}

.page-faq .scene:hover,
.page-faq .scene:focus-within {
  border-top-color: var(--cyan);
}

.page-faq .scene__title {
  margin: 0.6rem 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.14rem;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.page-faq .scene__text {
  margin: 0 0 0.7rem;
  color: var(--ink-2);
  font-size: 0.94rem;
  line-height: 1.82;
}

.page-faq .scene__text strong {
  color: var(--ink);
}

.page-faq .scene__link {
  display: inline-block;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  text-decoration: none;
}

.page-faq .scene__link:hover,
.page-faq .scene__link:focus-visible {
  color: var(--signal);
}

/* ── 后续入口 ── */
.page-faq .faq-next {
  padding: var(--faq-gap) 0 0;
}

.page-faq .next-grid {
  display: grid;
  gap: 1px;
  margin-top: 1.6rem;
  border: 1px solid var(--line);
  background: var(--line);
}

.page-faq .next-card {
  display: block;
  padding: 1.1rem 1.2rem 1.3rem;
  border-left: 3px solid transparent;
  background: var(--carbon);
  color: var(--ink);
  text-decoration: none;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.page-faq .next-card:hover,
.page-faq .next-card:focus-visible {
  border-left-color: var(--signal);
  background: var(--green-900);
}

.page-faq .next-card__label {
  display: block;
  margin-bottom: 0.35rem;
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.page-faq .next-card__text {
  display: block;
  color: var(--ink-2);
  font-size: 0.91rem;
  line-height: 1.8;
}

/* ── 断点 ── */
@media (min-width: 680px) {
  .page-faq .scene-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.75rem 2rem;
  }

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

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.32fr) minmax(280px, 0.68fr);
    gap: 3.25rem;
    align-items: end;
  }

  .page-faq .start-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 3.5rem;
    align-items: start;
  }

  .page-faq .tabs {
    grid-template-columns: var(--faq-side) minmax(0, 1fr);
    gap: 3.25rem;
    align-items: start;
  }

  .page-faq .tabs__list {
    position: sticky;
    top: calc(var(--header-h) + 1.25rem);
    flex-direction: column;
    gap: 0.25rem;
    overflow: visible;
    padding: 0;
    border-bottom: 0;
    border-left: 1px solid var(--line);
  }

  .page-faq .tabs__btn {
    width: 100%;
    margin-left: -1px;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    background: transparent;
    padding: 0.8rem 0.9rem 0.8rem 1.1rem;
    white-space: normal;
  }

  .page-faq .tabs__btn:hover {
    background: var(--glass);
  }

  .page-faq .tabs__btn[aria-selected="true"] {
    border-left-color: var(--signal);
    background: linear-gradient(90deg, rgba(255, 107, 44, 0.16), rgba(255, 107, 44, 0) 72%);
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.4fr) minmax(300px, 0.6fr);
  }

  .page-faq .scene-grid {
    gap: 2rem 2.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .route-list__link,
  .page-faq .tabs__btn,
  .page-faq .next-card,
  .page-faq .scene {
    transition: none;
  }
}