.page-faq {
  --faq-line: rgba(154, 170, 185, 0.2);
  --faq-accent: var(--cyan-400);
  background: var(--ink-900);
  color: var(--offwhite-050);
  overflow-x: hidden;
}

.page-faq .breadcrumb {
  padding-top: 16px;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: 20px 0 48px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -140px;
  right: -120px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(47, 227, 208, 0.16), rgba(47, 227, 208, 0) 68%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  max-width: 880px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(32px, 8vw, 58px);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: 0.02em;
  margin: 14px 0 18px;
  color: var(--offwhite-050);
}

.page-faq .faq-hero__lede {
  font-size: 16px;
  line-height: 1.85;
  color: var(--grayblue-400);
  max-width: 660px;
  margin: 0 0 28px;
}

.page-faq .faq-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-fact {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: var(--ink-700);
}

.page-faq .faq-fact__num {
  font-size: 26px;
  line-height: 1;
  font-weight: 600;
  color: var(--cyan-400);
}

.page-faq .faq-fact__txt {
  font-size: 13px;
  line-height: 1.4;
  color: var(--grayblue-400);
}

/* ---------- 场景 + 手风琴 ---------- */

.page-faq .faq-scenes__grid {
  display: grid;
  gap: 28px;
}

.page-faq .faq-rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-rail__title {
  display: none;
}

.page-faq .faq-rail__item {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--ink-700);
  border: 1px solid transparent;
  color: var(--offwhite-050);
  text-decoration: none;
  font-size: 14px;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-rail__item:hover,
.page-faq .faq-rail__item:focus-visible {
  border-color: var(--ink-500);
  background: var(--ink-500);
}

.page-faq .faq-rail__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex: none;
}

.page-faq .faq-rail__label {
  white-space: nowrap;
}

.page-faq .faq-rail__count {
  font-size: 12px;
  color: var(--grayblue-400);
}

.page-faq .faq-group {
  margin-bottom: 52px;
}

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

.page-faq .faq-group[data-scene="records"] { --faq-accent: var(--darkred-600); }
.page-faq .faq-group[data-scene="range"]   { --faq-accent: var(--redorange-500); }
.page-faq .faq-group[data-scene="cycle"]   { --faq-accent: var(--graypurple-500); }

.page-faq .faq-group__head h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 5.4vw, 34px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0.02em;
  margin: 12px 0 8px;
  color: var(--offwhite-050);
}

.page-faq .faq-group__meta {
  font-size: 13px;
  color: var(--grayblue-400);
  margin: 0 0 20px;
}

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

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

.page-faq .faq-item__q {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 2px;
  cursor: pointer;
  list-style: none;
  outline-offset: 4px;
}

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

.page-faq .faq-item__q::marker {
  content: "";
}

.page-faq .faq-item__no {
  flex: none;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--faq-accent);
}

.page-faq .faq-item__text {
  flex: 1;
  font-size: 15px;
  line-height: 1.6;
  color: var(--offwhite-050);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-item__q::after {
  content: "";
  flex: none;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--grayblue-400);
  border-bottom: 2px solid var(--grayblue-400);
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-item__q::after {
  transform: rotate(-135deg);
  border-color: var(--faq-accent);
}

.page-faq .faq-item[open] .faq-item__text {
  color: var(--faq-accent);
}

.page-faq .faq-item__a {
  padding: 0 2px 20px 30px;
}

.page-faq .faq-item__a p {
  margin: 0;
  padding-top: 14px;
  border-top: 2px solid var(--faq-accent);
  font-size: 15px;
  line-height: 1.95;
  color: var(--grayblue-400);
  max-width: 62ch;
}

/* ---------- 三步法 ---------- */

.page-faq .faq-flow h2,
.page-faq .faq-range h2,
.page-faq .faq-misread-section h2,
.page-faq .faq-help h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 5.6vw, 38px);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: 0.02em;
  margin: 12px 0 10px;
}

.page-faq .faq-flow__lede,
.page-faq .faq-range__lede,
.page-faq .faq-misread__lede,
.page-faq .faq-help__lede {
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.85;
  margin: 0 0 26px;
}

.page-faq .faq-flow__lede,
.page-faq .faq-range__lede,
.page-faq .faq-help__lede {
  color: var(--grayblue-400);
}

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

.page-faq .media-frame img {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 20px;
  counter-reset: step;
}

.page-faq .faq-step {
  position: relative;
  padding: 22px 20px 20px;
  border-radius: var(--radius-md);
  background: var(--ink-700);
  border-left: 3px solid rgba(47, 227, 208, 0.55);
}

.page-faq .faq-step__badge {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--cyan-400);
  color: var(--ink-900);
  font-size: 15px;
  font-weight: 600;
}

.page-faq .faq-step__title {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin: 14px 0 8px;
  color: var(--offwhite-050);
}

.page-faq .faq-step__desc {
  font-size: 15px;
  line-height: 1.85;
  color: var(--grayblue-400);
  margin: 0;
}

/* ---------- 区间与周期 ---------- */

.page-faq .faq-range__grid {
  display: grid;
  gap: 30px;
}

.page-faq .faq-range__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-faq .faq-range__step {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 14px;
  align-items: start;
}

.page-faq .faq-range__idx {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--ink-700);
  color: var(--amber-400);
  font-size: 13px;
  font-weight: 600;
}

.page-faq .faq-range__step h3 {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin: 4px 0 6px;
  color: var(--offwhite-050);
}

.page-faq .faq-range__step p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--grayblue-400);
  margin: 0;
}

.page-faq .faq-range__more {
  margin: 24px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--grayblue-400);
}

.page-faq .faq-range__more a {
  color: var(--amber-400);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-range__col--fig {
  display: grid;
  gap: 20px;
}

.page-faq .faq-range__media {
  margin: 0;
}

.page-faq .faq-range__figure {
  padding: 18px 16px 10px;
  border-radius: var(--radius-lg);
  background: var(--ink-700);
}

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

/* ---------- 常见误读（奶油底） ---------- */

.page-faq .faq-misread__lede {
  color: var(--ink-700);
}

.page-faq .faq-misread {
  display: grid;
  gap: 16px;
}

.page-faq .faq-misread__item {
  padding: 20px 22px;
  border-radius: var(--radius-md);
  background: var(--cream-300);
  border-top: 3px solid var(--darkred-600);
}

.page-faq .faq-misread__no {
  display: block;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--darkred-600);
  margin-bottom: 8px;
}

.page-faq .faq-misread__item h3 {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin: 0 0 8px;
  color: var(--inktext-900);
}

.page-faq .faq-misread__item p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-700);
  margin: 0;
}

/* ---------- 查不到时怎么联系 ---------- */

.page-faq .faq-help__grid {
  display: grid;
  gap: 28px;
}

.page-faq .faq-help__list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-help__list li {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: var(--ink-700);
}

.page-faq .faq-help__key {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cyan-400);
}

.page-faq .faq-help__val {
  font-size: 15px;
  line-height: 1.7;
  color: var(--grayblue-400);
}

.page-faq .faq-help__part {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--grayblue-400);
}

.page-faq .faq-help__part a {
  color: var(--amber-400);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-contact {
  padding: 24px 22px;
  border-radius: var(--radius-lg);
  background: var(--ink-700);
  border-top: 3px solid var(--amber-400);
}

.page-faq .faq-contact__title {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin: 0 0 16px;
  color: var(--offwhite-050);
}

.page-faq .faq-contact__list {
  margin: 0 0 16px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 16px;
}

.page-faq .faq-contact__list dt {
  font-size: 13px;
  color: var(--grayblue-400);
  letter-spacing: 0.04em;
}

.page-faq .faq-contact__list dd {
  margin: 0;
  font-size: 15px;
  color: var(--offwhite-050);
  word-break: break-word;
}

.page-faq .faq-contact__list a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 208, 0.4);
}

.page-faq .faq-contact__note {
  font-size: 13px;
  line-height: 1.75;
  color: var(--grayblue-400);
  margin: 0 0 20px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-faq .faq-fact {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .faq-misread {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 28px 0 64px;
  }
  .page-faq .faq-scenes__grid {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 56px;
  }
  .page-faq .faq-rail {
    display: block;
    overflow: visible;
    padding-bottom: 0;
    position: sticky;
    top: 104px;
    align-self: start;
  }
  .page-faq .faq-rail__title {
    display: block;
    font-size: 12px;
    letter-spacing: 0.14em;
    color: var(--grayblue-400);
    margin: 0 0 12px;
  }
  .page-faq .faq-rail__item {
    display: flex;
    width: 100%;
    border-radius: var(--radius-sm);
    background: transparent;
    padding: 11px 12px;
    margin-bottom: 4px;
  }
  .page-faq .faq-rail__count {
    margin-left: auto;
  }
  .page-faq .faq-range__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 48px;
  }
  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 48px;
  }
  .page-faq .faq-flow__media {
    margin-bottom: 38px;
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-item__text {
    font-size: 16px;
  }
  .page-faq .faq-item__a p {
    font-size: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-rail__item,
  .page-faq .faq-item__text,
  .page-faq .faq-item__q::after {
    transition: none;
  }
}
<<<END>>>