.page-faq {
  color: var(--mist);
  background-color: var(--ink);
  overflow-x: hidden;
}

.page-faq h1,
.page-faq h2,
.page-faq h3 {
  font-family: var(--font-display);
  letter-spacing: -0.02em;
}

.page-faq a {
  color: inherit;
  text-decoration: none;
}

.page-faq .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

.faq-crumb {
  padding-top: clamp(14px, 2.4vw, 22px);
  font-size: 0.82rem;
  color: var(--muted);
}

.faq-crumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.faq-crumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

.faq-crumb a:hover {
  color: var(--accent);
}

/* 首屏 */
.faq-hero {
  position: relative;
  padding: clamp(22px, 3.6vw, 34px) 0 clamp(30px, 5vw, 56px);
  background:
    radial-gradient(120% 90% at 84% -14%, rgba(53, 255, 193, 0.14), transparent 62%),
    linear-gradient(180deg, var(--deep), var(--ink) 82%);
  border-bottom: 1px solid var(--line);
}

.faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(30, 75, 63, 0.42) 0 1px, transparent 1px 76px),
    repeating-linear-gradient(0deg, rgba(30, 75, 63, 0.28) 0 1px, transparent 1px 76px);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 88%);
}

.faq-hero__inner {
  position: relative;
  display: grid;
  gap: clamp(20px, 3.2vw, 34px);
  align-items: start;
}

.faq-hero h1 {
  margin: 10px 0 0;
  font-size: clamp(1.85rem, 6.6vw, 3.5rem);
  line-height: 1.08;
  font-weight: 800;
  color: var(--mist);
}

.faq-hero .lede {
  margin: 16px 0 0;
  max-width: 52ch;
  font-size: clamp(0.98rem, 2.3vw, 1.1rem);
  line-height: 1.78;
  color: var(--mist);
  opacity: 0.84;
}

.faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 28px);
}

/* 速览面板 */
.faq-facts {
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(158deg, var(--panel), var(--deep));
  box-shadow: var(--shadow);
}

.faq-facts .panel__title {
  margin: 0;
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  color: var(--accent-soft);
}

.faq-facts__list {
  display: grid;
  gap: 12px;
  margin: 16px 0 0;
}

.faq-facts__row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 4px 12px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--line);
  font-size: 0.88rem;
}

.faq-facts__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.faq-facts__row dt {
  color: var(--muted);
}

.faq-facts__row dd {
  margin: 0;
  color: var(--accent);
  font-size: 0.84rem;
}

.faq-facts .panel__note {
  margin: 16px 0 0;
  font-size: 0.84rem;
  line-height: 1.72;
  color: var(--muted);
}

/* 问答区 */
.faq-answers {
  padding-top: clamp(30px, 5vw, 58px);
}

.faq-shell {
  display: grid;
  gap: clamp(18px, 3vw, 28px);
  margin-top: clamp(20px, 3vw, 30px);
}

.faq-rail {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.faq-rail a {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 16px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: var(--deep);
  font-size: 0.88rem;
  color: var(--mist);
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.faq-rail a::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(53, 255, 193, 0.14);
}

.faq-rail a:hover,
.faq-rail a:focus-visible {
  border-color: var(--accent);
  background: var(--panel);
  color: var(--accent);
  outline: none;
}

.qa-group {
  scroll-margin-top: 104px;
}

.qa-group + .qa-group {
  margin-top: clamp(24px, 4vw, 38px);
}

.qa-group__title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 14px;
  font-size: clamp(1.02rem, 2.6vw, 1.32rem);
  font-weight: 800;
  color: var(--mist);
}

.qa-group__no {
  flex: none;
  padding: 4px 10px;
  border-radius: var(--pill);
  background: var(--accent);
  color: var(--ink);
  font-size: 0.74rem;
  font-weight: 700;
}

.qa {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--deep);
  overflow: hidden;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.qa + .qa {
  margin-top: 10px;
}

.qa[open] {
  border-color: rgba(53, 255, 193, 0.42);
  background: var(--panel);
}

.qa summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 0.97rem;
  font-weight: 700;
  line-height: 1.55;
  color: var(--mist);
}

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

.qa summary::after {
  content: "+";
  flex: none;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.3rem;
  line-height: 1;
  color: var(--accent);
}

.qa[open] summary::after {
  content: "–";
}

.qa summary:hover {
  color: var(--accent-soft);
}

.qa summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -3px;
}

.qa__q {
  flex: 1;
}

.qa__body {
  padding: 0 16px 16px;
  font-size: 0.93rem;
  line-height: 1.8;
  color: var(--mist);
}

.qa__body p {
  margin: 0;
}

.qa__body p + p {
  margin-top: 10px;
}

.qa__body a {
  color: var(--accent);
  border-bottom: 1px solid rgba(53, 255, 193, 0.35);
}

.qa__body a:hover {
  color: var(--accent-soft);
}

.qa__hint {
  margin: 10px 0 0;
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--amber);
}

/* 平板端入口 */
.faq-tablet {
  padding-top: clamp(34px, 6vw, 66px);
}

.faq-tablet__grid {
  display: grid;
  gap: clamp(18px, 3.2vw, 32px);
  align-items: center;
}

.faq-tablet__text h2 {
  margin: 8px 0 0;
}

.faq-pointer {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.faq-pointer li {
  position: relative;
  padding-left: 24px;
  font-size: 0.93rem;
  line-height: 1.72;
  color: var(--mist);
}

.faq-pointer li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 9px;
  height: 9px;
  border-radius: 3px;
  background: var(--amber);
}

.faq-figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--deep);
  box-shadow: var(--shadow);
}

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

.faq-figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--muted);
}

/* 三步流程 */
.faq-flow {
  padding-top: clamp(34px, 6vw, 66px);
}

.faq-flow__grid {
  display: grid;
  gap: clamp(18px, 3vw, 28px);
  margin-top: clamp(20px, 3vw, 30px);
  align-items: start;
}

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

.flow-step {
  position: relative;
  padding: 16px 16px 16px 62px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(142deg, var(--panel), var(--deep));
}

.flow-step__no {
  position: absolute;
  left: 16px;
  top: 16px;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--ink);
  font-size: 0.88rem;
  font-weight: 700;
}

.flow-step__title {
  margin: 0;
  font-size: 0.98rem;
  font-weight: 800;
  color: var(--mist);
}

.flow-step__text {
  margin: 6px 0 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--muted);
}

.flow-step__tip {
  margin: 8px 0 0;
  font-size: 0.83rem;
  line-height: 1.65;
  color: var(--amber);
}

/* 咨询准备 */
.faq-prepare {
  padding-top: clamp(34px, 6vw, 66px);
}

.faq-prepare__grid {
  display: grid;
  gap: clamp(18px, 3vw, 28px);
  margin-top: clamp(20px, 3vw, 30px);
  align-items: start;
}

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

.faq-checklist li {
  position: relative;
  padding: 14px 16px 14px 46px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--deep);
  font-size: 0.93rem;
  line-height: 1.68;
  color: var(--mist);
}

.faq-checklist li::before {
  content: "✓";
  position: absolute;
  left: 16px;
  top: 13px;
  font-family: var(--font-mono);
  color: var(--accent);
}

.faq-links {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.faq-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--deep);
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.faq-link:hover,
.faq-link:focus-visible {
  border-color: var(--accent);
  background: var(--panel);
  transform: translateY(-2px);
  outline: none;
}

.faq-link__title {
  font-size: 0.97rem;
  font-weight: 800;
  color: var(--accent-soft);
}

.faq-link__note {
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--muted);
}

.faq-contact {
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(162deg, var(--panel), var(--ink));
  box-shadow: var(--shadow);
}

.faq-contact .panel__title {
  margin: 0;
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  color: var(--accent-soft);
}

.faq-contact__list {
  display: grid;
  gap: 12px;
  margin: 16px 0 0;
}

.faq-contact__row {
  display: grid;
  gap: 3px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--line);
}

.faq-contact__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.faq-contact__key {
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.faq-contact__val {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--mist);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.faq-copy {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
}

.faq-contact .panel__note {
  margin: 14px 0 0;
  font-size: 0.83rem;
  line-height: 1.7;
  color: var(--muted);
}

/* 响应式 */
@media (min-width: 700px) {
  .faq-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .faq-hero__inner {
    grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.9fr);
  }

  .faq-shell {
    grid-template-columns: 214px minmax(0, 1fr);
    align-items: start;
  }

  .faq-rail {
    flex-direction: column;
    flex-wrap: nowrap;
    position: sticky;
    top: 96px;
  }

  .faq-rail a {
    width: 100%;
    justify-content: flex-start;
  }

  .faq-tablet__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  }

  .faq-prepare__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.85fr);
  }
}

@media (min-width: 980px) {
  .faq-flow__grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    align-items: center;
  }
}

@media (min-width: 1080px) {
  .faq-links {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (hover: hover) and (min-width: 980px) {
  .flow-step__tip {
    opacity: 0;
    transform: translateY(-4px);
    transition: opacity 0.22s ease, transform 0.22s ease;
  }

  .flow-step:hover .flow-step__tip,
  .flow-step:focus-within .flow-step__tip {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }

  .faq-rail a:hover,
  .faq-link:hover,
  .faq-link:focus-visible {
    transform: none;
  }

  .flow-step__tip {
    opacity: 1;
    transform: none;
  }
}