.page-faq {
  background-color: var(--ink);
  color: var(--fog);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4vw, 48px) 0 clamp(46px, 6.4vw, 84px);
  background:
    radial-gradient(130% 150% at 88% 0%, rgba(45, 125, 255, 0.3) 0%, rgba(45, 125, 255, 0) 58%),
    linear-gradient(160deg, #0B1E3A 0%, #071529 100%);
  color: var(--snow);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -46%;
  width: 64%;
  height: 150%;
  background: linear-gradient(122deg, rgba(45, 125, 255, 0.18), rgba(51, 224, 208, 0.05));
  transform: rotate(-12deg);
  border-radius: 46% 0 0 58%;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-faq .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--mist);
}

.page-faq .breadcrumb__link {
  color: var(--mist);
  text-decoration: none;
  transition: color 0.18s var(--ease);
}

.page-faq .breadcrumb__link:hover {
  color: var(--snow);
}

.page-faq .breadcrumb__sep {
  color: rgba(157, 184, 217, 0.5);
}

.page-faq .faq-hero .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(28px, 4.8vw, 58px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--snow);
  margin: 16px 0 0;
  max-width: 20em;
}

.page-faq .faq-hero .lede {
  margin: 22px 0 0;
  max-width: 48em;
  font-family: var(--font-body);
  font-size: clamp(15px, 1.55vw, 17px);
  line-height: 1.9;
  color: var(--fog);
}

/* ---------- 组别跳转 ---------- */
.page-faq .faq-jump {
  margin-top: clamp(26px, 3.6vw, 42px);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(27, 42, 68, 0.72);
  color: var(--fog);
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-faq .faq-jump__link:hover {
  border-color: var(--line-strong);
  color: var(--snow);
  transform: translateY(-2px);
}

.page-faq .faq-jump__num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--cyan);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  padding: clamp(46px, 6vw, 80px) 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-group:last-of-type {
  border-bottom: 0;
}

.page-faq .faq-group__head {
  max-width: 50em;
  margin-bottom: clamp(24px, 3.2vw, 40px);
}

.page-faq .faq-group__head .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue);
  margin: 0;
}

.page-faq .faq-group__head h2 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(23px, 3.1vw, 36px);
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--snow);
  margin: 12px 0 0;
}

.page-faq .faq-group__lede {
  margin: 14px 0 0;
  font-size: clamp(15px, 1.5vw, 16.5px);
  line-height: 1.85;
  color: var(--fog);
}

.page-faq .faq-group__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
}

.page-faq .faq-group__grid > * {
  min-width: 0;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .faq-item {
  border-radius: var(--radius);
  background: var(--slate);
  border: 1px solid rgba(157, 184, 217, 0.12);
  border-left: 3px solid rgba(157, 184, 217, 0.28);
  overflow: hidden;
  transition: background-color 0.18s var(--ease);
}

.page-faq .faq-item[open] {
  background: #1F3050;
  border-left-color: var(--blue);
}

.page-faq .faq-item:hover {
  border-top-color: rgba(45, 125, 255, 0.45);
  border-right-color: rgba(45, 125, 255, 0.45);
  border-bottom-color: rgba(45, 125, 255, 0.45);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: clamp(16px, 2vw, 22px) clamp(16px, 2.2vw, 26px);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(15px, 1.65vw, 18px);
  line-height: 1.55;
  color: var(--snow);
  cursor: pointer;
  list-style: none;
  transition: color 0.18s var(--ease);
}

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

.page-faq .faq-item__mark {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  margin-top: 1px;
  border-radius: 7px;
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--blue);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq .faq-item__mark::before {
  content: "+";
}

.page-faq .faq-item[open] .faq-item__mark::before {
  content: "−";
}

.page-faq .faq-item[open] .faq-item__mark {
  color: var(--cyan);
  border-color: rgba(51, 224, 208, 0.55);
  transform: rotate(180deg);
}

.page-faq .faq-item__a {
  padding: 0 clamp(16px, 2.2vw, 26px) clamp(18px, 2.4vw, 26px);
  font-size: clamp(14.5px, 1.4vw, 15.8px);
  line-height: 1.9;
  color: var(--fog);
}

.page-faq .faq-item__a > p {
  margin: 0 0 12px;
}

.page-faq .faq-item__a > p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(51, 224, 208, 0.4);
}

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

/* ---------- 步骤编号 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 4px 0 14px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  counter-reset: faqstep;
}

.page-faq .faq-steps li {
  position: relative;
  counter-increment: faqstep;
  padding-left: 42px;
  line-height: 1.75;
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  width: 28px;
  height: 28px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  background: rgba(45, 125, 255, 0.15);
  border: 1px solid rgba(45, 125, 255, 0.42);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--snow);
}

.page-faq .faq-steps li:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 13.5px;
  top: 34px;
  bottom: -12px;
  width: 0;
  border-left: 1px dashed rgba(157, 184, 217, 0.4);
}

/* ---------- 简易列表 ---------- */
.page-faq .faq-flat {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-flat li {
  position: relative;
  padding-left: 22px;
  line-height: 1.8;
}

.page-faq .faq-flat li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 13px;
  width: 10px;
  height: 2px;
  background: var(--orange);
}

/* ---------- 定位刻度 ---------- */
.page-faq .faq-rail {
  display: none;
}

.page-faq .faq-rail__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(157, 184, 217, 0.32);
}

.page-faq .faq-rail__dot.is-on {
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(51, 224, 208, 0.16);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 0 0 clamp(20px, 3vw, 30px);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line-soft);
  background: linear-gradient(160deg, #12233F, #071529);
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-figure--wide {
  margin-bottom: clamp(26px, 3.4vw, 40px);
}

/* ---------- 排障速查 ---------- */
.page-faq .faq-trouble {
  background: var(--snow);
  color: var(--ink);
  padding: clamp(48px, 6vw, 86px) 0;
}

.page-faq .faq-trouble__head {
  max-width: 46em;
}

.page-faq .faq-trouble__head .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue-dark);
  margin: 0;
}

.page-faq .faq-trouble__head h2 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(24px, 3.2vw, 38px);
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 12px 0 0;
}

.page-faq .faq-trouble__lede {
  margin: 14px 0 0;
  font-size: clamp(15px, 1.5vw, 16.5px);
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-faq .faq-trouble__grid {
  margin-top: clamp(28px, 4vw, 46px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 2.4vw, 24px);
}

.page-faq .faq-check {
  background: #FFFFFF;
  border: 1px solid rgba(11, 30, 58, 0.1);
  border-top: 3px solid var(--blue);
  border-radius: var(--radius);
  padding: clamp(18px, 2.4vw, 28px);
}

.page-faq .faq-check__title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 18px;
  line-height: 1.4;
  color: var(--ink);
  margin: 0 0 16px;
}

.page-faq .faq-check__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  counter-reset: faqcheck;
}

.page-faq .faq-check__list li {
  position: relative;
  counter-increment: faqcheck;
  padding-left: 30px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-faq .faq-check__list li::before {
  content: counter(faqcheck);
  position: absolute;
  left: 0;
  top: 3px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(45, 125, 255, 0.12);
  color: var(--blue-dark);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  display: grid;
  place-items: center;
}

.page-faq .faq-prep {
  margin-top: clamp(24px, 3.4vw, 40px);
  background: #E7EEF9;
  border-left: 3px solid var(--orange);
  border-radius: var(--radius);
  padding: clamp(20px, 2.8vw, 32px);
}

.page-faq .faq-prep__title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 17px;
  line-height: 1.4;
  color: var(--ink);
  margin: 0;
}

.page-faq .faq-prep__list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-prep__list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-faq .faq-prep__list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 12px;
  width: 10px;
  height: 2px;
  background: var(--blue);
}

.page-faq .faq-prep__note {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-faq .faq-prep__note a {
  color: var(--blue-dark);
  text-decoration: none;
  border-bottom: 1px solid rgba(30, 107, 230, 0.4);
}

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

/* ---------- 底部联络 ---------- */
.page-faq .faq-contact {
  background: linear-gradient(150deg, #0B1E3A 0%, #071529 100%);
  padding: clamp(44px, 5.6vw, 80px) 0;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-contact__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 40px);
}

.page-faq .faq-contact__copy h2 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(22px, 2.8vw, 32px);
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--snow);
  margin: 0;
}

.page-faq .faq-contact__copy p {
  margin: 14px 0 0;
  max-width: 40em;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--fog);
}

.page-faq .faq-contact__channels {
  display: grid;
  gap: 14px;
  align-content: start;
  background: rgba(27, 42, 68, 0.72);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(18px, 2.4vw, 28px);
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
}

.page-faq .faq-contact__key {
  min-width: 72px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-faq .faq-contact__val {
  font-family: var(--font-mono);
  font-size: 14.5px;
  font-weight: 600;
  color: var(--snow);
  word-break: break-word;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-trouble__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-group__grid {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: start;
    gap: clamp(30px, 3.6vw, 60px);
  }

  .page-faq .faq-group__grid--media {
    grid-template-columns: minmax(0, 1fr) minmax(240px, 340px);
  }

  .page-faq .faq-rail {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    width: 24px;
    padding-top: 8px;
    position: sticky;
    top: 132px;
  }

  .page-faq .faq-rail--row {
    flex-direction: row;
    justify-content: flex-start;
    width: auto;
    padding-top: 0;
    position: static;
    margin-top: 18px;
  }

  .page-faq .faq-contact__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-group__grid {
    gap: clamp(40px, 4.4vw, 72px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump__link,
  .page-faq .faq-item,
  .page-faq .faq-item__mark {
    transition: none;
  }

  .page-faq .faq-jump__link:hover {
    transform: none;
  }

  .page-faq .faq-item[open] .faq-item__mark {
    transform: none;
  }
}