.page-faq {
  --faq-hair: rgba(11, 44, 77, 0.12);
  --faq-hair-strong: rgba(11, 44, 77, 0.24);
  --faq-glow: rgba(18, 227, 198, 0.2);
  background: var(--seagull);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  margin-top: 8px;
  padding: clamp(36px, 6vw, 64px) 0 clamp(64px, 9vw, 112px);
  background: var(--night);
  color: var(--seagull);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 44px), 0 100%);
}

.page-faq .faq-hero::before,
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.page-faq .faq-hero::before {
  inset: -30% -12% auto -12%;
  height: 130%;
  background:
    radial-gradient(52% 46% at 82% 16%, var(--faq-glow), transparent 68%),
    radial-gradient(44% 42% at 10% 88%, rgba(122, 92, 255, 0.22), transparent 70%);
}

.page-faq .faq-hero::after {
  left: -15%;
  right: -15%;
  bottom: -34%;
  height: 58%;
  background: radial-gradient(ellipse at 50% 50%, rgba(18, 227, 198, 0.16), transparent 66%);
}

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

.page-faq .faq-hero__eyebrow {
  color: var(--cyan);
}

.page-faq .faq-hero__title {
  margin: 12px 0 20px;
  max-width: 17em;
  font-size: clamp(2.1rem, 6.4vw, 4.6rem);
  font-weight: 250;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--seagull);
}

.page-faq .faq-hero__lead {
  max-width: 46em;
  margin: 0;
  font-size: clamp(1rem, 1.4vw, 1.1rem);
  line-height: 1.85;
  color: rgba(246, 248, 249, 0.78);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.page-faq .faq-hero__actions .btn--ghost {
  border-color: rgba(246, 248, 249, 0.36);
  color: var(--seagull);
}

.page-faq .faq-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__chips .data-chip {
  background: rgba(18, 227, 198, 0.12);
  border: 1px solid rgba(18, 227, 198, 0.32);
  color: var(--cyan);
}

/* ---------- 章节通用 ---------- */
.page-faq .faq-section {
  padding: clamp(52px, 7.5vw, 100px) 0;
}

.page-faq .faq-section__head {
  margin-bottom: clamp(28px, 4vw, 46px);
}

.page-faq .faq-lead {
  margin: 0 0 28px;
  max-width: 40em;
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .faq-lead a {
  color: var(--deep);
}

/* ---------- 01 起步 ---------- */
.page-faq .faq-steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 18px;
  padding: 24px 0;
  border-top: 1px solid var(--faq-hair);
}

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

.page-faq .faq-step__num {
  position: relative;
  display: inline-block;
  padding-left: 14px;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--deep);
}

.page-faq .faq-step__num::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.42em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--coral);
}

.page-faq .faq-step__body h3 {
  margin: 0 0 8px;
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--deep);
}

.page-faq .faq-step__body p {
  margin: 0;
  max-width: 40em;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-faq .faq-note {
  margin: 26px 0 0;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  background: var(--mineral);
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-faq .faq-note a {
  color: var(--deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-start__figure {
  margin: 28px 0 0;
}

.page-faq .faq-start__figure .figure__frame {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--mineral);
}

.page-faq .faq-start__figure .figure__media {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ---------- 02 反馈回看 ---------- */
.page-faq .faq-section--feedback {
  background: var(--mineral);
}

.page-faq .faq-cards {
  display: grid;
  gap: 14px;
}

.page-faq .faq-card {
  padding: 22px 24px;
  border-radius: var(--radius-md);
  background: var(--seagull);
  border-left: 3px solid var(--moss);
}

.page-faq .faq-card h3 {
  margin: 0 0 8px;
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--deep);
}

.page-faq .faq-card p {
  margin: 0;
  font-size: 0.97rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------- 03 大屏 ---------- */
.page-faq .faq-section--screen {
  position: relative;
  overflow: hidden;
  background: var(--deep);
  color: var(--seagull);
}

.page-faq .faq-section--screen::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(104deg, rgba(18, 227, 198, 0.12), transparent 46%);
  pointer-events: none;
}

.page-faq .faq-section--screen > .shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-section--screen .faq-section__eyebrow {
  color: var(--cyan);
}

.page-faq .faq-section--screen .section-title {
  color: var(--seagull);
}

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

.page-faq .faq-screen__item {
  padding: 18px 0;
  border-top: 1px solid rgba(246, 248, 249, 0.16);
}

.page-faq .faq-screen__item:last-child {
  border-bottom: 1px solid rgba(246, 248, 249, 0.16);
}

.page-faq .faq-screen__k {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-faq .faq-screen__item p {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.8;
  color: rgba(246, 248, 249, 0.78);
}

.page-faq .faq-screen__stat {
  margin: 26px 0 0;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.6;
  color: rgba(246, 248, 249, 0.62);
}

.page-faq .faq-screen__stat span {
  font-size: 2.4rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--cyan);
}

.page-faq .faq-screen__stat small {
  margin-right: 8px;
  font-size: 0.9rem;
  color: var(--cyan);
}

.page-faq .faq-screen__figure {
  margin: 30px 0 0;
}

.page-faq .faq-screen__figure .figure__frame {
  aspect-ratio: 3 / 2;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--night);
}

.page-faq .faq-screen__figure .figure__media {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-faq .faq-screen__figure .figure__caption {
  color: rgba(246, 248, 249, 0.6);
}

/* ---------- 04 读卡 ---------- */
.page-faq .faq-reader {
  margin: 0 0 clamp(28px, 4vw, 44px);
  padding: 30px 22px 18px;
  border-radius: var(--radius-lg);
  background: var(--mineral);
  overflow-x: auto;
}

.page-faq .faq-reader__chart {
  display: flex;
  align-items: flex-end;
  gap: clamp(8px, 2vw, 26px);
  min-width: 400px;
  height: 220px;
  padding: 0 4px;
}

.page-faq .faq-reader__col {
  position: relative;
  flex: 1 1 0;
  height: 100%;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 5px;
  padding-bottom: 22px;
  box-sizing: border-box;
  border-bottom: 1px solid var(--faq-hair-strong);
}

.page-faq .faq-reader__bar {
  display: block;
  width: clamp(9px, 1.4vw, 16px);
  height: var(--h, 40%);
  min-height: 10px;
  border-radius: 6px 6px 0 0;
}

.page-faq .faq-reader__bar--goal {
  background: linear-gradient(180deg, var(--cyan), rgba(18, 227, 198, 0.55));
}

.page-faq .faq-reader__bar--lost {
  background: linear-gradient(180deg, var(--coral), rgba(255, 106, 69, 0.5));
}

.page-faq .faq-reader__col em {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 4px;
  text-align: center;
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--moss);
}

.page-faq .faq-reader__col--flag::before {
  content: "";
  position: absolute;
  inset: 0 3px;
  border-radius: 12px;
  background: rgba(255, 106, 69, 0.08);
  pointer-events: none;
}

.page-faq .faq-reader__col--flag::after {
  content: attr(data-flag);
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  padding: 3px 9px;
  border-radius: var(--radius-pill);
  background: var(--coral);
  color: #fff;
  font-size: 10px;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.page-faq .faq-reader__legend {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin: 18px 0 0;
  min-width: 400px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

.page-faq .faq-reader__key {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-faq .faq-reader__key::before {
  content: "";
  width: 12px;
  height: 12px;
  border-radius: 4px 4px 0 0;
}

.page-faq .faq-reader__key--goal::before {
  background: var(--cyan);
}

.page-faq .faq-reader__key--lost::before {
  background: var(--coral);
}

.page-faq .faq-read__notes {
  row-gap: 22px;
}

.page-faq .faq-read__note h3 {
  margin: 0 0 8px;
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--deep);
}

.page-faq .faq-read__note p {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-faq .faq-read__example {
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 22px 26px;
  border-radius: var(--radius-md);
  border-left: 3px solid var(--cyan);
  background: var(--mineral);
  max-width: 62em;
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--ink);
}

/* ---------- 05 排查 ---------- */
.page-faq .faq-section--trouble {
  background: var(--seagull);
}

.page-faq .faq-list {
  border-top: 1px solid var(--faq-hair-strong);
}

.page-faq .faq-item {
  position: relative;
  padding-left: 18px;
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 3px;
  border-radius: 3px;
  background: transparent;
  transform: scaleY(0.3);
  transform-origin: 50% 0;
  transition: background var(--dur-fast) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-item[open]::before {
  background: var(--cyan);
  transform: scaleY(1);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 0;
  list-style: none;
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease);
}

.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > summary::marker {
  content: "";
}

.page-faq .faq-item[open] > summary {
  transform: translateY(-2px);
}

.page-faq .faq-item__q {
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--deep);
}

.page-faq .faq-item__mark {
  position: relative;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 4px;
  border-radius: 50%;
  border: 1px solid var(--faq-hair-strong);
  transition: border-color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--deep);
  border-radius: 2px;
  transition: opacity var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}

.page-faq .faq-item__mark::before {
  left: 5px;
  right: 5px;
  top: 9px;
  height: 1.5px;
}

.page-faq .faq-item__mark::after {
  top: 5px;
  bottom: 5px;
  left: 9px;
  width: 1.5px;
}

.page-faq .faq-item[open] .faq-item__mark {
  border-color: var(--coral);
  background: rgba(255, 106, 69, 0.1);
}

.page-faq .faq-item[open] .faq-item__mark::before {
  background: var(--coral);
}

.page-faq .faq-item[open] .faq-item__mark::after {
  opacity: 0;
}

.page-faq .faq-item__a {
  padding: 0 0 22px;
  max-width: 62em;
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--ink-soft);
}

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

/* ---------- 06 联系 ---------- */
.page-faq .faq-section--help {
  padding-bottom: clamp(60px, 8vw, 110px);
}

.page-faq .faq-help {
  position: relative;
  padding: clamp(30px, 5vw, 56px);
  border-radius: var(--radius-lg);
  background: var(--mineral);
  overflow: hidden;
}

.page-faq .faq-help::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -70px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(18, 227, 198, 0.24), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-help > * {
  position: relative;
  z-index: 1;
}

.page-faq .faq-help__lead {
  margin: 0 0 30px;
  max-width: 42em;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-faq .faq-help__contacts {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
  max-width: 44em;
}

.page-faq .faq-help__contacts li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 0;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-help__contacts li:last-child {
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-help__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--moss);
}

.page-faq .faq-help__value {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--deep);
  word-break: break-word;
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 860px) {
  .page-faq .faq-hero {
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), 0 100%);
  }

  .page-faq .faq-step {
    grid-template-columns: 40px 1fr;
    gap: 12px;
  }

  .page-faq .faq-step__num {
    font-size: 1.24rem;
  }

  .page-faq .faq-reader {
    padding: 24px 14px 14px;
  }

  .page-faq .faq-reader__chart {
    height: 180px;
  }

  .page-faq .faq-item > summary {
    padding: 18px 0;
  }

  .page-faq .faq-item__q {
    font-size: 1rem;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-help__contacts li {
    grid-template-columns: 130px 1fr;
    align-items: baseline;
    gap: 16px;
  }

  .page-faq .faq-cards {
    grid-template-columns: repeat(3, 1fr);
  }
}

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

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

.page-faq {
  --h: 1rem;
}