.page-faq {
  --faq-gap: clamp(16px, 2.6vw, 26px);
  --faq-step-c: var(--c-violet);
  display: block;
  background: var(--c-void);
  color: var(--c-ivory);
  padding-bottom: clamp(40px, 7vw, 80px);
}

/* ---------- 页头 ---------- */
.page-faq .faq-head {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 62px) 0 clamp(22px, 3.2vw, 40px);
  border-bottom: 2px solid var(--c-line-soft);
}
.page-faq .faq-head::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(44% 62% at 84% 8%, rgba(168, 85, 247, .24), transparent 72%),
    radial-gradient(38% 54% at 6% 92%, rgba(34, 211, 238, .15), transparent 72%);
  pointer-events: none;
}
.page-faq .faq-head > .arc-wrap {
  position: relative;
  z-index: 1;
}
.page-faq .faq-eyebrow {
  margin: clamp(18px, 3vw, 30px) 0 0;
  font-family: var(--f-index);
  font-size: 12.5px;
  letter-spacing: .18em;
  color: var(--c-cyan);
}
.page-faq .faq-title {
  margin: 14px 0 18px;
  max-width: 900px;
  font-family: var(--f-display);
  font-weight: 300;
  font-size: clamp(34px, 6.6vw, 78px);
  line-height: 1.08;
  letter-spacing: .02em;
  color: var(--c-ivory);
  text-shadow: 0 0 28px rgba(168, 85, 247, .32);
}
.page-faq .faq-lead {
  max-width: 640px;
  margin: 0 0 clamp(22px, 3.4vw, 36px);
  font-size: 17px;
  line-height: 1.75;
  color: var(--c-mist);
}
.page-faq .arc-coordbar {
  margin-top: clamp(10px, 2vw, 18px);
}

/* ---------- 五步流程 ---------- */
.page-faq .faq-flow {
  padding: clamp(44px, 7vw, 88px) 0 clamp(8px, 2vw, 20px);
}
.page-faq .faq-flow__figure {
  margin: 0 0 clamp(30px, 5vw, 52px);
}
.page-faq .faq-flow__figure .arc-frame__img,
.page-faq .faq-flow__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(1.05) contrast(1.04);
}

.page-faq .step-ladder {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--faq-gap);
}
.page-faq .step {
  grid-column: 1 / -1;
  position: relative;
  isolation: isolate;
  padding: clamp(20px, 3.2vw, 34px);
  padding-right: clamp(58px, 13vw, 140px);
  background: linear-gradient(158deg, rgba(11, 26, 34, .96), rgba(7, 11, 24, .96));
  border: 2px solid var(--c-line);
  border-left: 6px solid var(--step-c, var(--c-violet));
  box-shadow: 5px 5px 0 0 rgba(168, 85, 247, .24);
  transition: transform var(--t-mid) ease, border-color var(--t-mid) ease, box-shadow var(--t-mid) ease;
}
.page-faq .step:hover,
.page-faq .step:focus-within {
  transform: translateY(-3px);
  border-color: var(--c-lilac);
  border-left-color: var(--step-c, var(--c-violet));
  box-shadow: 5px 5px 0 0 var(--step-c, var(--c-violet));
}
.page-faq .step:nth-child(1) { --step-c: var(--c-violet); }
.page-faq .step:nth-child(2) { --step-c: var(--c-cyan); }
.page-faq .step:nth-child(3) { --step-c: var(--c-gold); }
.page-faq .step:nth-child(4) { --step-c: var(--c-red); }
.page-faq .step:nth-child(5) { --step-c: var(--c-mint); }

.page-faq .step__num {
  position: absolute;
  top: clamp(8px, 1.6vw, 16px);
  right: clamp(10px, 2.2vw, 22px);
  font-family: var(--f-display);
  font-size: clamp(46px, 9vw, 96px);
  font-weight: 400;
  line-height: .82;
  letter-spacing: -.02em;
  color: var(--step-c, var(--c-violet));
  opacity: .32;
  pointer-events: none;
  user-select: none;
}
@supports (-webkit-text-stroke: 2px red) {
  .page-faq .step__num {
    color: transparent;
    -webkit-text-stroke: 2px var(--step-c, var(--c-violet));
    opacity: .58;
  }
}
.page-faq .step__title {
  margin: 0 0 10px;
  font-family: var(--f-body);
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-ivory);
}
.page-faq .step__text {
  max-width: 62ch;
  margin: 0 0 14px;
  font-size: 16.5px;
  line-height: 1.75;
  color: var(--c-mist);
}
.page-faq .step__link {
  display: inline-block;
  margin-bottom: 14px;
  font-family: var(--f-index);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 211, 238, .42);
  transition: color var(--t-fast) ease, border-color var(--t-fast) ease;
}
.page-faq .step__link:hover,
.page-faq .step__link:focus-visible {
  color: var(--c-ivory);
  border-color: var(--c-ivory);
}
.page-faq .step__q {
  margin: 0;
  padding: 10px 14px;
  border-left: 3px solid var(--step-c, var(--c-violet));
  background: rgba(147, 162, 196, .08);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--c-mist);
}
.page-faq .step__q-tag {
  display: inline-block;
  margin-right: 8px;
  font-family: var(--f-index);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--step-c, var(--c-violet));
}
@media (min-width: 880px) {
  .page-faq .step:nth-child(odd) { grid-column: 1 / span 8; }
  .page-faq .step:nth-child(even) { grid-column: 5 / span 8; }
}

/* ---------- 路线条 ---------- */
.page-faq .route-bar {
  position: relative;
  margin-top: clamp(28px, 4.6vw, 52px);
  padding-top: 22px;
}
.page-faq .route-bar__line {
  position: absolute;
  top: 40px;
  left: 0;
  width: 100%;
  height: 3px;
  color: var(--c-violet);
  opacity: .5;
}
.page-faq .route-bar__list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
}
.page-faq .route-bar__link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 16px 4px 12px;
  text-decoration: none;
  background: var(--c-void);
  border: 2px solid var(--c-line-soft);
  transition: border-color var(--t-mid) ease, transform var(--t-mid) ease, background-color var(--t-mid) ease;
}
.page-faq .route-bar__link:hover,
.page-faq .route-bar__link:focus-visible {
  transform: translateY(-2px);
  border-color: var(--c-lilac);
  background: rgba(168, 85, 247, .14);
}
.page-faq .route-bar__code {
  font-family: var(--f-index);
  font-size: 12.5px;
  letter-spacing: .18em;
  color: var(--c-violet);
}
.page-faq .route-bar__label {
  font-size: 14px;
  line-height: 1.3;
  color: var(--c-ivory);
  text-align: center;
}

/* ---------- 三号栏目 ---------- */
.page-faq .faq-slot {
  padding: clamp(48px, 7.4vw, 92px) 0 clamp(20px, 3vw, 36px);
}
.page-faq .slot-grid {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
  align-items: start;
}
@media (min-width: 880px) {
  .page-faq .slot-grid {
    grid-template-columns: 7fr 5fr;
  }
}
.page-faq .slot-lead {
  max-width: 60ch;
  margin: 0 0 clamp(20px, 3vw, 30px);
  font-size: 17px;
  line-height: 1.75;
  color: var(--c-mist);
}
.page-faq .slot-list {
  list-style: none;
  margin: 0 0 clamp(18px, 2.6vw, 26px);
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-faq .slot-list__item {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 14px;
  align-items: start;
  padding: 16px 18px;
  border: 2px solid var(--c-line-soft);
  border-left: 6px solid var(--c-cyan);
  background: rgba(11, 26, 34, .72);
  transition: border-color var(--t-mid) ease, background-color var(--t-mid) ease;
}
.page-faq .slot-list__item:hover {
  border-color: var(--c-lilac);
  border-left-color: var(--c-cyan);
  background: rgba(34, 211, 238, .08);
}
.page-faq .slot-list__n {
  font-family: var(--f-display);
  font-size: 26px;
  line-height: 1.1;
  color: var(--c-cyan);
}
.page-faq .slot-list__body {
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--c-mist);
}
.page-faq .slot-list__body strong {
  display: block;
  margin-bottom: 4px;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--c-ivory);
}
.page-faq .slot-note {
  margin: 0;
  padding: 12px 16px;
  border: 2px dashed var(--c-line);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--c-mist);
}
.page-faq .slot-figure {
  margin: 0;
}
.page-faq .slot-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 2px solid var(--c-line);
  box-shadow: 5px 5px 0 0 rgba(34, 211, 238, .22);
}

/* ---------- 问答区 ---------- */
.page-faq .faq-qa {
  padding: clamp(44px, 6.6vw, 84px) 0 clamp(12px, 2vw, 24px);
}
.page-faq .faq-qa--cyan {
  border-top: 2px solid var(--c-line-soft);
}
.page-faq .fold-list {
  display: grid;
  gap: 14px;
}

.page-faq .arc-fold {
  border: 2px solid var(--c-line);
  border-left: 6px solid var(--step-c, var(--c-cyan));
  background: linear-gradient(150deg, rgba(11, 26, 34, .94), rgba(7, 11, 24, .94));
  transition: border-color var(--t-mid) ease, box-shadow var(--t-mid) ease;
}
.page-faq .arc-fold:hover {
  border-color: var(--c-lilac);
  border-left-color: var(--step-c, var(--c-cyan));
  box-shadow: 4px 4px 0 0 rgba(34, 211, 238, .2);
}
.page-faq .faq-fold            { --step-c: var(--c-cyan); }
.page-faq .faq-fold--cyan      { --step-c: var(--c-violet); }

.page-faq .arc-fold__btn {
  position: relative;
  display: block;
  width: 100%;
  margin: 0;
  padding: 18px 52px 18px 20px;
  background: none;
  border: 0;
  text-align: left;
  font-family: var(--f-body);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--c-ivory);
  cursor: pointer;
  transition: color var(--t-fast) ease, background-color var(--t-fast) ease;
}
.page-faq .arc-fold__btn:hover {
  color: var(--c-lilac);
  background: rgba(196, 181, 253, .06);
}
.page-faq .arc-fold__btn::after {
  content: "+";
  position: absolute;
  top: 50%;
  right: 20px;
  transform: translateY(-50%);
  font-family: var(--f-index);
  font-size: 22px;
  line-height: 1;
  color: var(--step-c, var(--c-cyan));
  transition: transform var(--t-mid) ease;
}
.page-faq .arc-fold__btn[aria-expanded="true"]::after {
  content: "–";
}
.page-faq .arc-fold__panel {
  padding: 0 20px 20px;
  border-top: 1px solid var(--c-line-soft);
  margin-top: -2px;
}
.page-faq .arc-fold__panel p {
  max-width: 68ch;
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--c-mist);
}
.page-faq .arc-fold__panel a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 211, 238, .42);
  transition: color var(--t-fast) ease, border-color var(--t-fast) ease;
}
.page-faq .arc-fold__panel a:hover,
.page-faq .arc-fold__panel a:focus-visible {
  color: var(--c-ivory);
  border-color: var(--c-ivory);
}

/* ---------- 求助 ---------- */
.page-faq .faq-help {
  padding: clamp(46px, 6.8vw, 86px) 0 clamp(20px, 3vw, 34px);
}
.page-faq .help-card {
  position: relative;
  padding: clamp(24px, 4vw, 46px);
  border: 2px solid var(--c-line);
  border-top: 6px solid var(--c-gold);
  background:
    linear-gradient(126deg, rgba(122, 30, 60, .58), rgba(11, 26, 34, .92) 62%),
    var(--c-deep);
  box-shadow: 6px 6px 0 0 rgba(245, 185, 66, .2);
}
.page-faq .help-card__code {
  font-family: var(--f-index);
  font-size: 12.5px;
  letter-spacing: .18em;
  color: var(--c-gold);
}
.page-faq .help-card__title {
  margin: 12px 0 14px;
  font-family: var(--f-display);
  font-weight: 300;
  font-size: clamp(26px, 4.4vw, 46px);
  line-height: 1.18;
  letter-spacing: .02em;
  color: var(--c-ivory);
}
.page-faq .help-card__text {
  max-width: 62ch;
  margin: 0 0 16px;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--c-mist);
}
.page-faq .help-mail {
  display: inline-block;
  margin: 0 0 10px;
  font-family: var(--f-index);
  font-size: clamp(15px, 2.4vw, 22px);
  letter-spacing: .04em;
  color: var(--c-gold);
  word-break: break-all;
  user-select: all;
}
.page-faq .help-card__meta {
  margin: 0 0 clamp(18px, 3vw, 26px);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--c-mist);
}

/* ---------- 下一站 ---------- */
.page-faq .arc-next {
  padding: clamp(30px, 5vw, 56px) 0 0;
  border-top: 2px solid var(--c-line-soft);
  margin-top: clamp(26px, 4vw, 44px);
}
.page-faq .faq-next__title {
  margin: 0 0 16px;
  font-family: var(--f-index);
  font-size: 12.5px;
  letter-spacing: .18em;
  color: var(--c-mist);
}
.page-faq .faq-next__row {
  display: grid;
  gap: 12px;
}
.page-faq .arc-next__link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  text-decoration: none;
  font-size: 15.5px;
  line-height: 1.5;
  color: var(--c-ivory);
  background: rgba(11, 26, 34, .7);
  border: 2px solid var(--c-line-soft);
  transition: border-color var(--t-mid) ease, transform var(--t-mid) ease, background-color var(--t-mid) ease;
}
.page-faq .arc-next__link:hover,
.page-faq .arc-next__link:focus-visible {
  transform: translateY(-2px);
  border-color: var(--c-lilac);
  background: rgba(168, 85, 247, .12);
}
.page-faq .arc-next__code {
  flex: 0 0 auto;
  font-family: var(--f-index);
  font-size: 12.5px;
  letter-spacing: .18em;
  color: var(--c-cyan);
}

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

/* ---------- 窄屏 ---------- */
@media (max-width: 600px) {
  .page-faq .step {
    padding-right: clamp(20px, 3.2vw, 34px);
    padding-top: clamp(46px, 12vw, 60px);
  }
  .page-faq .step__num {
    top: 10px;
    right: 14px;
    font-size: 46px;
    opacity: .3;
  }
  .page-faq .route-bar__line { display: none; }
  .page-faq .route-bar { padding-top: 0; }
  .page-faq .route-bar__link { padding: 12px 2px 10px; gap: 4px; }
  .page-faq .route-bar__code { font-size: 10.5px; letter-spacing: .1em; }
  .page-faq .route-bar__label { font-size: 11.5px; }
  .page-faq .slot-list__item { grid-template-columns: 32px 1fr; gap: 10px; padding: 14px; }
  .page-faq .slot-list__n { font-size: 22px; }
  .page-faq .arc-fold__btn { font-size: 16px; padding: 16px 46px 16px 16px; }
  .page-faq .arc-fold__panel { padding: 0 16px 18px; }
  .page-faq .arc-next__link { font-size: 14.5px; padding: 14px 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .step,
  .page-faq .arc-fold,
  .page-faq .route-bar__link,
  .page-faq .arc-next__link,
  .page-faq .arc-fold__btn,
  .page-faq .arc-fold__btn::after {
    transition: none;
  }
  .page-faq .step:hover,
  .page-faq .step:focus-within,
  .page-faq .route-bar__link:hover,
  .page-faq .arc-next__link:hover {
    transform: none;
  }
}