.page-faq {
  --faq-gap: clamp(18px, 3vw, 30px);
  --faq-soft: rgba(142, 155, 170, 0.1);
  --faq-ink-soft: rgba(10, 22, 38, 0.62);
  --faq-ink-dim: rgba(10, 22, 38, 0.42);
  padding-bottom: clamp(40px, 7vw, 96px);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumbs {
  padding: 22px 0 2px;
}

.page-faq .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--cool-grey);
}

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

.page-faq .breadcrumb-list a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-faq .breadcrumb-list a:hover,
.page-faq .breadcrumb-list a:focus-visible {
  color: var(--volt-400);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(20px, 3.4vw, 40px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 48px);
  align-items: center;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  letter-spacing: -0.015em;
}

.page-faq .faq-hero .lede {
  margin-top: 20px;
  max-width: 47ch;
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 15px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--faq-soft);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--text-soft);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-hero__frame {
  position: relative;
  padding: clamp(14px, 2.6vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 78% 20%, rgba(200, 255, 77, 0.14), transparent 58%),
    radial-gradient(circle at 12% 92%, rgba(53, 208, 186, 0.12), transparent 60%),
    linear-gradient(158deg, var(--ink-900), var(--ink-950) 72%);
  box-shadow: var(--shadow-panel);
  overflow: hidden;
}

.page-faq .faq-hero__svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-svg__grid line {
  stroke: var(--line);
  stroke-width: 1;
}

.page-faq .faq-svg__score {
  fill: rgba(18, 41, 63, 0.85);
  stroke: rgba(200, 255, 77, 0.4);
  stroke-width: 1.4;
}

.page-faq .faq-svg__track-a {
  fill: none;
  stroke: var(--volt-400);
  stroke-width: 2.6;
  stroke-linecap: round;
}

.page-faq .faq-svg__track-b {
  fill: none;
  stroke: var(--cyan-400);
  stroke-width: 2;
  stroke-linecap: round;
  opacity: 0.85;
}

.page-faq .faq-svg__track-c {
  fill: none;
  stroke: var(--amber-500);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-dasharray: 7 9;
  opacity: 0.8;
}

.page-faq .faq-svg__node {
  fill: var(--ink-950);
  stroke: var(--volt-400);
  stroke-width: 2.4;
}

.page-faq .faq-svg__node--live {
  animation: faq-pulse 2.6s ease-in-out infinite;
}

.page-faq .faq-svg__node--amber {
  stroke: var(--amber-500);
}

@keyframes faq-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.32; }
}

/* ---------- 三条主线定位 ---------- */
.page-faq .faq-lines {
  padding-top: clamp(44px, 6.4vw, 84px);
}

.page-faq .faq-lines__head {
  max-width: 60ch;
  margin-bottom: clamp(24px, 3.4vw, 38px);
}

.page-faq .faq-lines__head .section-title {
  margin: 0 0 12px;
}

.page-faq .faq-lines__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 46px);
  align-items: center;
}

.page-faq .faq-lines__list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-line-card {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(158deg, rgba(18, 41, 63, 0.9), rgba(10, 22, 38, 0.72));
  color: inherit;
  text-decoration: none;
  transition: border-color 0.26s ease, transform 0.26s ease, box-shadow 0.26s ease;
}

.page-faq .faq-line-card:hover,
.page-faq .faq-line-card:focus-visible {
  border-color: rgba(200, 255, 77, 0.45);
  transform: translateY(-3px);
  box-shadow: 0 22px 44px -34px rgba(200, 255, 77, 0.55);
}

.page-faq .faq-line-card__icon {
  flex: none;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  border: 1px solid var(--line-strong);
  color: var(--volt-400);
  background: rgba(200, 255, 77, 0.07);
}

.page-faq .faq-line-card__icon svg {
  width: 21px;
  height: 21px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.page-faq .faq-line-card__body {
  display: block;
}

.page-faq .faq-line-card__num {
  display: block;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cool-grey);
}

.page-faq .faq-line-card__title {
  display: block;
  margin-top: 6px;
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--paper-100);
}

.page-faq .faq-line-card__desc {
  display: block;
  margin-top: 7px;
  font-size: 14px;
  line-height: 1.68;
  color: var(--text-dim);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  padding-top: clamp(46px, 6.4vw, 86px);
}

.page-faq .faq-body .section-title {
  margin: 0 0 clamp(22px, 3vw, 34px);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3vw, 30px);
  align-items: start;
}

.page-faq .faq-nav__title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cool-grey);
}

.page-faq .faq-nav__list {
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-nav__list::-webkit-scrollbar {
  display: none;
}

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

.page-faq .faq-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 11px 17px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-soft);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.24s ease, color 0.24s ease, background-color 0.24s ease;
}

.page-faq .faq-nav__link:hover,
.page-faq .faq-nav__link:focus-visible {
  border-color: var(--line-strong);
  color: var(--paper-100);
}

.page-faq .faq-nav__link[aria-current="true"] {
  border-color: rgba(200, 255, 77, 0.5);
  background: rgba(200, 255, 77, 0.1);
  color: var(--volt-400);
}

.page-faq .faq-nav__dot {
  width: 8px;
  height: 8px;
  flex: none;
  border-radius: 50%;
  background: var(--cool-grey);
  transition: background-color 0.24s ease, box-shadow 0.24s ease;
}

.page-faq .faq-nav__link[aria-current="true"] .faq-nav__dot {
  background: var(--volt-400);
  box-shadow: 0 0 0 4px rgba(200, 255, 77, 0.16);
}

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

.page-faq .faq-stream {
  display: flex;
  flex-direction: column;
  gap: clamp(20px, 3vw, 30px);
  min-width: 0;
}

/* ---------- 单个主线面板 ---------- */
.page-faq .faq-line {
  padding: clamp(22px, 3.2vw, 36px);
  scroll-margin-top: calc(var(--header-h-scrolled) + 24px);
}

.page-faq .faq-line__head {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.page-faq .faq-line__num {
  flex: none;
  font-family: var(--font-data);
  font-size: clamp(1.5rem, 3.2vw, 2rem);
  line-height: 1;
  color: var(--volt-400);
  opacity: 0.92;
}

.page-faq .faq-line__head .panel-title {
  margin: 2px 0 0;
}

.page-faq .faq-line__intro {
  margin: 12px 0 22px;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- 手风琴（页面级叠加） ---------- */
.page-faq .accordion__heading {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

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

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

.page-faq .accordion__trigger {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 18px 2px;
  border: 0;
  background: none;
  color: var(--paper-100);
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.55;
  text-align: left;
  cursor: pointer;
}

.page-faq .accordion__trigger:hover {
  color: var(--volt-400);
}

.page-faq .accordion__index {
  flex: none;
  font-family: var(--font-data);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--cool-grey);
  transition: color 0.24s ease;
}

.page-faq .accordion__trigger[aria-expanded="true"] .accordion__index {
  color: var(--volt-400);
}

.page-faq .accordion__label {
  flex: 1;
  min-width: 0;
}

.page-faq .accordion__icon {
  position: relative;
  flex: none;
  width: 12px;
  height: 12px;
  color: var(--cool-grey);
}

.page-faq .accordion__icon::before,
.page-faq .accordion__icon::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transform: translateY(-50%);
}

.page-faq .accordion__icon::after {
  transform: translateY(-50%) rotate(90deg);
  transition: transform 0.26s ease;
}

.page-faq .accordion__trigger[aria-expanded="true"] .accordion__icon {
  color: var(--volt-400);
}

.page-faq .accordion__trigger[aria-expanded="true"] .accordion__icon::after {
  transform: translateY(-50%) rotate(0deg);
}

.page-faq .accordion__panel {
  padding: 2px 0 24px 40px;
}

.page-faq .faq-steps {
  counter-reset: faqstep;
  display: flex;
  flex-direction: column;
  gap: 11px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps li {
  position: relative;
  padding-left: 36px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--text-soft);
}

.page-faq .faq-steps li::before {
  counter-increment: faqstep;
  content: counter(faqstep);
  position: absolute;
  left: 0;
  top: 2px;
  width: 23px;
  height: 23px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  font-family: var(--font-data);
  font-size: 11.5px;
  color: var(--cool-grey);
}

.page-faq .faq-hint {
  margin: 16px 0 0;
  padding: 12px 16px;
  border-left: 3px solid var(--cyan-400);
  border-radius: var(--radius-sm);
  background: rgba(53, 208, 186, 0.08);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-soft);
}

/* ---------- 纸色准备面板 ---------- */
.page-faq .faq-contact {
  padding-top: clamp(46px, 6.4vw, 86px);
}

.page-faq .faq-contact__panel {
  padding: clamp(24px, 3.6vw, 48px);
}

.page-faq .faq-contact__panel .eyebrow {
  color: var(--faq-ink-dim);
}

.page-faq .faq-contact__panel .section-title {
  margin: 10px 0 0;
}

.page-faq .faq-contact__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 3.6vw, 46px);
  align-items: center;
}

.page-faq .faq-contact__lead {
  margin: 16px 0 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--faq-ink-soft);
}

.page-faq .faq-checklist {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-checklist li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  font-size: 15px;
  line-height: 1.72;
  color: var(--faq-ink-soft);
}

.page-faq .faq-checklist__num {
  flex: none;
  padding-top: 2px;
  font-family: var(--font-data);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--faq-ink-dim);
}

.page-faq .faq-contact__media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

/* ---------- 收尾交接 ---------- */
.page-faq .faq-handoff {
  padding-top: clamp(30px, 4.4vw, 56px);
}

.page-faq .faq-handoff__panel {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: clamp(24px, 3.6vw, 40px);
}

.page-faq .faq-handoff__panel .panel-title {
  margin: 0 0 10px;
}

.page-faq .faq-handoff__panel .muted {
  margin: 0;
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.75;
}

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

/* ---------- 响应式 ---------- */
@media (max-width: 600px) {
  .page-faq .accordion__panel {
    padding-left: 0;
  }

  .page-faq .faq-line__head {
    gap: 12px;
  }

  .page-faq .faq-line-card {
    gap: 14px;
    padding: 18px 16px;
  }

  .page-faq .faq-steps li {
    padding-left: 32px;
    font-size: 14.5px;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-contact__grid {
    grid-template-columns: 1.12fr 0.88fr;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 7fr 5fr;
  }

  .page-faq .faq-lines__grid {
    grid-template-columns: 0.92fr 1.08fr;
    align-items: center;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: clamp(34px, 4.4vw, 68px);
  }

  .page-faq .faq-nav {
    position: sticky;
    top: calc(var(--header-h-scrolled) + 26px);
  }

  .page-faq .faq-nav__list {
    flex-direction: column;
    gap: 7px;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-faq .faq-nav__link {
    width: 100%;
    border-radius: 14px;
    white-space: normal;
    align-items: flex-start;
  }

  .page-faq .faq-nav__dot {
    margin-top: 6px;
  }

  .page-faq .faq-handoff__panel {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
  }

  .page-faq .faq-handoff__actions {
    flex: none;
  }
}

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

  .page-faq .faq-line-card,
  .page-faq .accordion__icon::after,
  .page-faq .faq-nav__link,
  .page-faq .faq-nav__dot {
    transition: none;
  }

  .page-faq .faq-line-card:hover,
  .page-faq .faq-line-card:focus-visible {
    transform: none;
  }
}