.page-faq {
  --faq-rail: 244px;
  --faq-gap: clamp(24px, 3.6vw, 56px);
  --faq-hair-light: rgba(11, 14, 19, 0.10);
  --faq-hair-dark: rgba(247, 242, 234, 0.12);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(44px, 6vw, 80px) clamp(52px, 7vw, 96px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 92% at 100% 0%, rgba(255, 78, 31, 0.30), transparent 58%),
    radial-gradient(85% 72% at 0% 100%, rgba(34, 211, 224, 0.16), transparent 62%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(247, 242, 234, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(247, 242, 234, 0.05) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 76%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 76%);
  pointer-events: none;
}

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

.page-faq .faq-hero .breadcrumb {
  margin-bottom: clamp(24px, 3.4vw, 40px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}

@media (min-width: 980px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    align-items: end;
  }
}

.page-faq .faq-hero .kicker {
  color: var(--flame);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(31px, 5vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.015em;
  color: var(--sand);
  max-width: 18em;
}

.page-faq .faq-hero .lede {
  margin: 20px 0 0;
  max-width: 46em;
  font-size: clamp(15.5px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--on-dark);
}

.page-faq .faq-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 1px;
  background: var(--faq-hair-dark);
  border: 1px solid var(--faq-hair-dark);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-faq .faq-fact {
  margin: 0;
  padding: 18px 18px 16px;
  background: rgba(21, 26, 35, 0.88);
  transition: background-color 200ms var(--ease);
}

.page-faq .faq-fact:hover {
  background: rgba(43, 33, 69, 0.92);
}

.page-faq .faq-fact dt {
  font-family: var(--font-display);
  font-size: clamp(25px, 3.2vw, 34px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
  color: var(--flame);
}

.page-faq .faq-fact dd {
  margin: 9px 0 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--on-dark);
}

/* ---------- 主体两栏 ---------- */

.page-faq .faq-body {
  padding-block: clamp(44px, 6vw, 92px);
  background: var(--sand);
}

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

@media (min-width: 940px) {
  .page-faq .faq-body__grid {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: var(--faq-gap);
    align-items: start;
  }
}

/* 左侧分类 */

.page-faq .faq-cats {
  position: sticky;
  top: 72px;
  z-index: 4;
  padding: 12px 0;
  background: var(--sand);
}

@media (min-width: 940px) {
  .page-faq .faq-cats {
    top: 104px;
    padding: 0;
  }
}

@media (max-width: 939px) {
  .page-faq .faq-cats {
    border-bottom: 1px solid var(--faq-hair-light);
  }
}

.page-faq .faq-cats__title {
  margin: 0 0 10px;
  color: var(--slate);
}

.page-faq .faq-cats__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

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

@media (min-width: 940px) {
  .page-faq .faq-cats__title {
    margin-bottom: 14px;
  }

  .page-faq .faq-cats__list {
    flex-direction: column;
    gap: 6px;
    overflow: visible;
  }
}

.page-faq .faq-cat {
  display: inline-flex;
  align-items: center;
  padding: 9px 16px;
  border: 1px solid rgba(11, 14, 19, 0.13);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.55);
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 200ms var(--ease), border-color 200ms var(--ease),
    color 200ms var(--ease), box-shadow 200ms var(--ease);
}

@media (min-width: 940px) {
  .page-faq .faq-cat {
    width: 100%;
    border-radius: var(--radius-md);
    padding: 11px 16px;
  }
}

.page-faq .faq-cat:hover,
.page-faq .faq-cat:focus-visible {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--void);
  box-shadow: 0 8px 22px rgba(34, 211, 224, 0.28);
  outline: none;
}

/* ---------- 问答分组 ---------- */

.page-faq .faq-group {
  scroll-margin-top: 132px;
}

.page-faq .faq-group + .faq-group,
.page-faq .faq-group > .faq-figure + .faq-group {
  margin-top: clamp(38px, 5.2vw, 64px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(11, 14, 19, 0.22);
}

.page-faq .faq-group__num {
  color: var(--flame);
  font-weight: 700;
  letter-spacing: 0.14em;
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-size: clamp(21px, 2.5vw, 29px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink);
}

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

/* 折叠问答 */

.page-faq .faq-q {
  border-bottom: 1px solid var(--faq-hair-light);
  border-left: 3px solid transparent;
  transition: border-left-color 200ms var(--ease), background-color 200ms var(--ease);
}

.page-faq .faq-q[open] {
  border-left-color: var(--flame);
  background: rgba(255, 78, 31, 0.05);
}

.page-faq .faq-q summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 10px 16px 14px;
  list-style: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink);
  transition: color 200ms var(--ease);
}

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

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

.page-faq .faq-q summary::before {
  content: "+";
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border: 1px solid rgba(11, 14, 19, 0.26);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  color: var(--ink-soft);
  transition: background-color 200ms var(--ease), border-color 200ms var(--ease),
    color 200ms var(--ease), transform 200ms var(--ease);
}

.page-faq .faq-q summary:hover::before {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-faq .faq-q[open] summary::before {
  content: "−";
  background: var(--flame);
  border-color: var(--flame);
  color: #FFFFFF;
  transform: rotate(180deg);
}

.page-faq .faq-q__body {
  padding: 0 20px 20px 48px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}

@media (max-width: 560px) {
  .page-faq .faq-q__body {
    padding-left: 32px;
    padding-right: 12px;
  }
}

.page-faq .faq-q__body p {
  margin: 0 0 10px;
}

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

.page-faq .faq-link {
  color: var(--ember);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: rgba(194, 45, 14, 0.35);
  text-underline-offset: 3px;
  transition: color 200ms var(--ease), text-decoration-color 200ms var(--ease);
}

.page-faq .faq-link:hover {
  color: var(--flame);
  text-decoration-color: var(--flame);
}

.page-faq .faq-mail-inline {
  font-family: var(--font-mono);
  font-size: 0.94em;
  color: var(--ink);
  background: rgba(34, 211, 224, 0.16);
  border-radius: 6px;
  padding: 1px 6px;
  white-space: nowrap;
}

/* 步骤条 */

.page-faq .faq-steps {
  display: grid;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
}

.page-faq .faq-steps li {
  position: relative;
  counter-increment: faqstep;
  padding: 11px 14px 11px 44px;
  border-radius: var(--radius-md);
  background: rgba(11, 14, 19, 0.045);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 14px;
  top: 11px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--flame);
}

/* 插图 */

.page-faq .faq-figure {
  margin: clamp(24px, 3.4vw, 36px) 0 0;
}

.page-faq .faq-figure .img-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--void);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-faq .faq-figure--43 img {
  aspect-ratio: 4 / 3;
}

.page-faq .faq-figure figcaption {
  margin-top: 12px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 更新节奏刻度带 ---------- */

.page-faq .faq-timeline {
  margin-top: clamp(30px, 4.4vw, 48px);
  padding: clamp(22px, 3.2vw, 38px);
  border: 1px solid var(--faq-hair-dark);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(255, 78, 31, 0.22), transparent 60%),
    linear-gradient(150deg, var(--indigo) 0%, #1A1533 58%, var(--void) 100%);
  overflow: hidden;
}

.page-faq .faq-timeline h3 {
  margin: 0;
  font-size: clamp(19px, 2.3vw, 25px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--sand);
}

.page-faq .faq-track {
  margin-top: 26px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.page-faq .faq-track__inner {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(14px, 2.4vw, 26px);
  min-width: 580px;
}

.page-faq .faq-track__inner::before {
  content: "";
  position: absolute;
  left: 4px;
  right: 4px;
  top: 8px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, rgba(34, 211, 224, 0.65), rgba(255, 194, 75, 0.7) 52%, rgba(255, 78, 31, 0.9));
}

.page-faq .faq-node {
  position: relative;
  padding-top: 34px;
  padding-right: 6px;
}

.page-faq .faq-node__dot {
  position: absolute;
  top: 0;
  left: 0;
  width: 18px;
  height: 18px;
  box-sizing: border-box;
  border: 3px solid var(--cyan);
  border-radius: 50%;
  background: var(--void);
  transition: border-color 200ms var(--ease), box-shadow 200ms var(--ease), transform 200ms var(--ease);
}

.page-faq .faq-node:hover .faq-node__dot,
.page-faq .faq-node:focus-within .faq-node__dot {
  border-color: var(--gold);
  box-shadow: 0 0 0 6px rgba(255, 194, 75, 0.18);
  transform: scale(1.12);
}

.page-faq .faq-node__time {
  margin: 0;
  color: var(--cyan);
}

.page-faq .faq-node__label {
  margin: 8px 0 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--sand);
}

.page-faq .faq-node__desc {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--on-dark);
}

.page-faq .faq-node__pop {
  margin: 12px 0 0;
  padding: 11px 13px;
  border: 1px solid var(--faq-hair-dark);
  border-radius: var(--radius-md);
  background: rgba(247, 242, 234, 0.07);
  font-size: 13px;
  line-height: 1.75;
  color: var(--on-dark);
}

@media (hover: hover) and (min-width: 940px) {
  .page-faq .faq-node__pop {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    width: 100%;
    z-index: 3;
    margin: 0;
    background: #191331;
    box-shadow: 0 20px 44px rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-5px);
    transition: opacity 200ms var(--ease), transform 200ms var(--ease), visibility 200ms var(--ease);
  }

  .page-faq .faq-node:hover .faq-node__pop,
  .page-faq .faq-node:focus-within .faq-node__pop {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
}

/* ---------- 底部联系 ---------- */

.page-faq .faq-contact {
  position: relative;
  overflow: hidden;
  padding-block: clamp(46px, 6vw, 88px);
  background: linear-gradient(168deg, var(--panel) 0%, var(--void) 64%);
  border-top: 1px solid var(--faq-hair-dark);
}

.page-faq .faq-contact::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(95% 120% at 100% 0%, rgba(255, 78, 31, 0.24), transparent 62%);
  pointer-events: none;
}

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

.page-faq .faq-contact__grid {
  display: grid;
  gap: clamp(26px, 3.6vw, 48px);
}

@media (min-width: 940px) {
  .page-faq .faq-contact__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }
}

.page-faq .faq-contact .kicker {
  color: var(--flame);
}

.page-faq .faq-contact h2 {
  margin: 12px 0 0;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.18;
  letter-spacing: -0.015em;
  color: var(--sand);
}

.page-faq .faq-contact__lead p {
  margin: 16px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--on-dark);
}

.page-faq .faq-contact__card {
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--faq-hair-dark);
  border-radius: var(--radius-lg);
  background: rgba(21, 26, 35, 0.72);
}

.page-faq .faq-contact__rows {
  margin: 0;
  display: grid;
  gap: 16px;
}

.page-faq .faq-contact__row {
  display: grid;
  gap: 5px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(247, 242, 234, 0.08);
}

.page-faq .faq-contact__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-contact__row dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-faq .faq-contact__row dd {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--sand);
  word-break: break-word;
}

.page-faq .faq-copy {
  margin-top: 20px;
}

@media (max-width: 560px) {
  .page-faq .faq-hero__facts {
    grid-template-columns: minmax(0, 1fr);
  }
}