.page-faq {
  --faq-panel-bg: linear-gradient(158deg, rgba(16, 31, 58, 0.88) 0%, rgba(10, 20, 40, 0.5) 100%);
  --faq-inset: clamp(1.15rem, 3.2vw, 2.25rem);
  display: block;
}

.page-faq__crumbs {
  margin-top: clamp(1rem, 3vw, 2rem);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  margin-block: clamp(1.25rem, 3.5vw, 2.5rem) clamp(2.5rem, 7vw, 5.5rem);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
}

.page-faq .faq-hero__title {
  margin: 0.65rem 0 1.15rem;
  font-size: clamp(2.1rem, 6vw, 4.15rem);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ice-100);
  max-width: 16ch;
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 62ch;
  color: var(--mist-300);
  font-size: clamp(0.98rem, 1.6vw, 1.125rem);
  line-height: 1.8;
}

.page-faq .faq-hero__side {
  display: flex;
  align-items: flex-end;
}

.page-faq .faq-flag {
  position: relative;
  width: 100%;
  padding: 1.15rem 1.25rem 1.25rem;
  border: 1px solid var(--navy-700);
  border-left: 2px solid var(--orange-500);
  background: var(--faq-panel-bg);
}

.page-faq .faq-flag::after {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  width: 26px;
  height: 26px;
  border-top: 1px solid var(--navy-500);
  border-right: 1px solid var(--navy-500);
  background: linear-gradient(225deg, rgba(255, 107, 26, 0.22), transparent 62%);
}

.page-faq .faq-flag__k {
  margin: 0 0 0.55rem;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--mist-300);
  text-transform: uppercase;
}

.page-faq .faq-flag__v {
  margin: 0 0 0.6rem;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--ice-100);
}

.page-faq .faq-flag__num {
  display: inline-block;
  margin-left: 0.7rem;
  padding: 0.1rem 0.5rem;
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--orange-500);
  border: 1px solid rgba(255, 107, 26, 0.45);
  background: rgba(255, 107, 26, 0.09);
}

.page-faq .faq-flag__n {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--mist-300);
}

/* ---------- 控制台 ---------- */

.page-faq .faq-console__head {
  padding-bottom: clamp(1.25rem, 3vw, 2rem);
  border-bottom: 1px solid var(--navy-700);
}

.page-faq .faq-console__head .h2 {
  margin: 0.55rem 0 0;
  max-width: 24ch;
  color: var(--ice-100);
}

.page-faq .faq-console__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  margin-top: clamp(1.5rem, 4vw, 2.75rem);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-bottom: 1px solid var(--navy-700);
}

.page-faq .faq-rail__link {
  position: relative;
  display: flex;
  gap: 0.75rem;
  align-items: baseline;
  padding: 0.85rem 0.6rem 0.85rem 1rem;
  border-top: 1px solid var(--navy-700);
  color: var(--mist-300);
  font-size: 0.95rem;
  line-height: 1.5;
  text-decoration: none;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-rail__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85rem;
  bottom: 0.85rem;
  width: 2px;
  background: var(--orange-500);
  opacity: 0;
  transform: scaleY(0.35);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--ice-100);
  background-color: rgba(26, 47, 82, 0.35);
}

.page-faq .faq-rail__link:hover::before,
.page-faq .faq-rail__link:focus-visible::before {
  opacity: 1;
  transform: scaleY(1);
}

.page-faq .faq-rail__idx {
  flex: 0 0 auto;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--navy-500);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-rail__link:hover .faq-rail__idx,
.page-faq .faq-rail__link:focus-visible .faq-rail__idx {
  color: var(--orange-500);
}

.page-faq .faq-rail__hint {
  margin: 0.9rem 0 0;
  padding-left: 1rem;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--navy-500);
}

/* ---------- 步骤面板 ---------- */

.page-faq .faq-item {
  position: relative;
  padding: var(--faq-inset);
  border: 1px solid var(--navy-700);
  background: var(--faq-panel-bg);
  scroll-margin-top: 5.5rem;
}

.page-faq .faq-item + .faq-item {
  margin-top: clamp(1rem, 2.6vw, 1.75rem);
}

.page-faq .faq-item::after {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  width: 20px;
  height: 20px;
  border-top: 2px solid var(--orange-500);
  border-right: 2px solid var(--orange-500);
  opacity: 0.75;
}

.page-faq .faq-item__head {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  align-items: baseline;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--navy-700);
}

.page-faq .faq-item__num {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--orange-500);
  line-height: 1;
}

.page-faq .faq-item__title {
  flex: 1 1 12rem;
  margin: 0;
  font-size: clamp(1.125rem, 2.3vw, 1.45rem);
  font-weight: 700;
  line-height: 1.35;
  color: var(--ice-100);
}

.page-faq .faq-item__answer {
  margin: 1.15rem 0 1.5rem;
  padding-left: 0.9rem;
  border-left: 2px solid rgba(33, 212, 181, 0.55);
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--ice-100);
}

.page-faq .faq-item__hint {
  margin: 1rem 0 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--mist-300);
}

.page-faq .faq-item__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin: 1.25rem 0 0;
}

/* 步骤列表 */

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

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  gap: 0.75rem;
  padding: 1rem 0;
  border-top: 1px solid var(--navy-700);
}

.page-faq .faq-step:first-child {
  border-top-color: var(--navy-500);
}

.page-faq .faq-step__n {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--teal-400);
  padding-top: 0.2rem;
}

.page-faq .faq-step__t {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--ice-100);
  line-height: 1.5;
}

.page-faq .faq-step__d {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--mist-300);
}

.page-faq .faq-done {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  margin: 1.35rem 0 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--teal-200);
}

.page-faq .faq-done::before {
  content: "";
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  margin-top: 0.45rem;
  border-radius: 50%;
  background: var(--teal-400);
  box-shadow: 0 0 0 3px rgba(33, 212, 181, 0.16);
}

/* 常见偏差 */

.page-faq .faq-offset {
  margin-top: 1.75rem;
  padding: 1.15rem 1.15rem 1.25rem;
  border: 1px dashed var(--navy-700);
  background: rgba(5, 11, 24, 0.45);
}

.page-faq .faq-offset__list {
  list-style: none;
  margin: 0.85rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.page-faq .faq-offset__list li {
  display: grid;
  grid-template-columns: 0.85rem minmax(0, 1fr);
  gap: 0.6rem;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--mist-300);
}

.page-faq .dot--warn {
  width: 7px;
  height: 7px;
  margin-top: 0.5rem;
  border-radius: 50%;
  background: var(--amber-300);
}

/* 图片 */

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

.page-faq .faq-figure .media-frame {
  border: 1px solid var(--navy-700);
  background: rgba(5, 11, 24, 0.5);
}

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

.page-faq .faq-figure .media-frame__caption {
  margin: 0;
  padding: 0.7rem 0.9rem;
  border-top: 1px solid var(--navy-700);
  color: var(--navy-500);
  font-size: 0.8125rem;
  line-height: 1.65;
}

/* 账号与变更说明 */

.page-faq .faq-pairs {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--navy-700);
}

.page-faq .faq-pair {
  display: grid;
  gap: 0.35rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--navy-700);
}

.page-faq .faq-pair__k {
  margin: 0;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--orange-500);
  letter-spacing: 0.02em;
}

.page-faq .faq-pair__v {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--mist-300);
}

/* 联系区块 */

.page-faq .faq-contact {
  display: grid;
  gap: 0.65rem;
  margin: 1.35rem 0 0;
}

.page-faq .faq-contact .copy-field {
  border: 1px solid var(--navy-700);
  background: rgba(5, 11, 24, 0.5);
  padding: 0.55rem 0.6rem 0.55rem 0.85rem;
}

.page-faq .faq-item--help {
  border-color: var(--navy-500);
  background: linear-gradient(158deg, rgba(26, 47, 82, 0.7) 0%, rgba(10, 20, 40, 0.55) 100%);
}

/* ---------- 平板 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
    align-items: end;
  }

  .page-faq .faq-item__head {
    flex-wrap: nowrap;
  }

  .page-faq .faq-step {
    grid-template-columns: 3rem minmax(0, 1fr);
    gap: 1rem;
  }

  .page-faq .faq-pair {
    grid-template-columns: 9rem minmax(0, 1fr);
    gap: 1.25rem;
    align-items: baseline;
  }

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

/* ---------- 桌面 ---------- */

@media (min-width: 1024px) {
  .page-faq .faq-console__grid {
    grid-template-columns: 244px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 2rem;
  }

  .page-faq .faq-item {
    scroll-margin-top: 2.5rem;
  }

  .page-faq .faq-figure {
    margin-top: 2rem;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-console__grid {
    grid-template-columns: 272px minmax(0, 1fr);
    gap: 3.5rem;
  }

  .page-faq .faq-offset {
    padding: 1.5rem 1.65rem 1.65rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-rail__link,
  .page-faq .faq-rail__link::before,
  .page-faq .faq-rail__idx {
    transition: none;
  }

  .page-faq .faq-rail__link::before {
    transform: none;
  }
}