.page-faq {
  --faq-card: var(--ink-800);
  --faq-line: var(--line-soft);
  --faq-ink-dim: rgba(233, 241, 238, 0.78);
  background: var(--ink-900);
  color: var(--mist-100);
  padding-bottom: clamp(48px, 8vw, 96px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 58px) 0 clamp(24px, 4vw, 42px);
  background:
    radial-gradient(120% 100% at 8% -10%, rgba(183, 243, 74, 0.13), transparent 58%),
    linear-gradient(180deg, var(--ink-900) 0%, var(--ink-800) 100%);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -8%;
  top: -30%;
  width: 46%;
  height: 180%;
  background: linear-gradient(180deg, rgba(183, 243, 74, 0.16), rgba(255, 90, 54, 0.06));
  transform: rotate(12deg);
  opacity: 0.5;
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(20px, 3.6vw, 42px);
  align-items: center;
}

.page-faq .faq-hero__eyebrow {
  margin-top: 14px;
  color: var(--lime-400);
}

.page-faq .faq-hero h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(31px, 7.2vw, 60px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--white);
  max-width: 15ch;
}

.page-faq .faq-hero__lead {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.78;
  color: var(--faq-ink-dim);
}

.page-faq .faq-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-faq .faq-hero__facts {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 12px;
  margin-top: clamp(24px, 4vw, 40px);
  padding-top: 20px;
  border-top: 1px dashed var(--line-mid);
}

.page-faq .faq-fact {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-faq .faq-fact__n {
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1;
  font-weight: 700;
  color: var(--lime-400);
}

.page-faq .faq-fact__l {
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--steel-500);
}

/* ---------- 图像 ---------- */
.page-faq .faq-shot {
  margin: 0;
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--lime-line);
  background: var(--ink-800);
}

.page-faq .faq-shot img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .faq-shot--hero {
  aspect-ratio: 3 / 2;
}

.page-faq .faq-shot--hero img {
  height: 100%;
}

.page-faq .faq-shot--wide {
  aspect-ratio: 3 / 2;
}

.page-faq .faq-shot--wide img {
  height: 100%;
}

/* ---------- 分屏主体 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  padding-top: clamp(32px, 6vw, 66px);
}

.page-faq .faq-rail {
  align-self: start;
}

.page-faq .faq-rail__label {
  color: var(--steel-500);
  margin-bottom: 12px;
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-rail__list a {
  flex: none;
  display: inline-block;
  padding: 9px 15px;
  border-radius: var(--r-pill);
  border: 1px solid var(--faq-line);
  background: var(--ink-800);
  color: var(--mist-100);
  font-size: 13px;
  white-space: nowrap;
  text-decoration: none;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  border-color: var(--lime-400);
  color: var(--lime-300);
  background: rgba(183, 243, 74, 0.08);
}

.page-faq .faq-rail__list a:focus-visible {
  outline: 2px solid var(--lime-400);
  outline-offset: 2px;
}

.page-faq .faq-rail__card {
  display: none;
  margin-top: 22px;
  padding: 18px;
  border-radius: var(--r-md);
  border: 1px solid var(--lime-line);
  background: linear-gradient(150deg, rgba(183, 243, 74, 0.09), transparent 70%), var(--ink-800);
}

.page-faq .faq-rail__card-t {
  margin: 0 0 6px;
  font-weight: 700;
  font-size: 15px;
  color: var(--white);
}

.page-faq .faq-rail__card-p {
  margin: 0 0 12px;
  font-size: 13px;
  line-height: 1.72;
  color: var(--faq-ink-dim);
}

.page-faq .faq-rail__card-a {
  display: inline-block;
  font-size: 13px;
  color: var(--lime-400);
  text-decoration: none;
  border-bottom: 1px solid var(--lime-line);
  padding-bottom: 2px;
}

.page-faq .faq-rail__card-a:hover {
  color: var(--lime-300);
  border-color: var(--lime-400);
}

/* ---------- 章节 ---------- */
.page-faq .faq-sec {
  scroll-margin-top: calc(var(--head-h) + 26px);
  padding-bottom: clamp(38px, 6vw, 72px);
}

.page-faq .faq-sec + .faq-sec {
  border-top: 1px solid var(--faq-line);
  padding-top: clamp(30px, 5vw, 58px);
}

.page-faq .faq-sec__head .index {
  color: var(--lime-400);
}

.page-faq .faq-sec h2 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(23px, 3.6vw, 38px);
  line-height: 1.14;
  letter-spacing: -0.015em;
  color: var(--white);
}

.page-faq .faq-sec__lead {
  margin: 12px 0 0;
  max-width: 64ch;
  font-size: clamp(14px, 1.6vw, 16px);
  line-height: 1.78;
  color: var(--faq-ink-dim);
}

/* ---------- 表格 ---------- */
.page-faq .faq-table-wrap {
  margin-top: clamp(18px, 3vw, 28px);
  overflow-x: auto;
  border-radius: var(--r-md);
  border: 1px solid var(--faq-line);
  background: var(--ink-800);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-faq .faq-table__cap {
  caption-side: top;
  text-align: left;
  padding: 14px 16px 4px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel-500);
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  text-align: left;
  padding: 13px 16px;
  border-bottom: 1px solid var(--faq-line);
  vertical-align: top;
}

.page-faq .faq-table thead th {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--lime-400);
  font-weight: 600;
  border-bottom: 1px solid var(--line-mid);
}

.page-faq .faq-table tbody th {
  font-weight: 700;
  color: var(--white);
  white-space: nowrap;
}

.page-faq .faq-table tbody td {
  color: var(--faq-ink-dim);
  line-height: 1.7;
}

.page-faq .faq-table tbody tr:last-child th,
.page-faq .faq-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .faq-table tbody tr:hover th,
.page-faq .faq-table tbody tr:hover td {
  background: rgba(183, 243, 74, 0.05);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  margin-top: clamp(18px, 3vw, 28px);
}

.page-faq .faq-item {
  margin-bottom: 10px;
  border: 1px solid var(--faq-line);
  border-left: 3px solid var(--steel-700);
  border-radius: var(--r-md);
  background: var(--ink-800);
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-item:hover {
  border-left-color: var(--lime-400);
}

.page-faq .faq-item[open] {
  border-left-color: var(--lime-400);
  background: linear-gradient(180deg, rgba(183, 243, 74, 0.07), transparent 62%), var(--ink-800);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 1.6vw, 16.5px);
  font-weight: 600;
  line-height: 1.6;
  color: var(--white);
}

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

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

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--lime-400);
  outline-offset: -2px;
  border-radius: var(--r-md);
}

.page-faq .faq-mark {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  margin-left: auto;
  margin-top: 4px;
}

.page-faq .faq-mark::before,
.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--lime-400);
  border-radius: 2px;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

.page-faq .faq-mark::before {
  width: 14px;
  height: 2px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-mark::after {
  width: 2px;
  height: 14px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item[open] .faq-mark::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .faq-a {
  padding: 0 18px 16px 18px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--faq-ink-dim);
}

.page-faq .faq-a p {
  margin: 0 0 10px;
  max-width: 68ch;
}

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

.page-faq .faq-a a {
  color: var(--lime-400);
  text-decoration: none;
  border-bottom: 1px solid var(--lime-line);
}

.page-faq .faq-a a:hover {
  color: var(--lime-300);
  border-color: var(--lime-400);
}

/* ---------- 三档刷新 ---------- */
.page-faq .faq-lanes {
  display: grid;
  gap: 12px;
  margin-top: clamp(18px, 3vw, 28px);
}

.page-faq .faq-lane {
  padding: 18px;
  border: 1px solid var(--faq-line);
  border-radius: var(--r-md);
  background: var(--ink-800);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq .faq-lane:hover {
  border-color: var(--lime-line);
  transform: translateY(-3px);
}

.page-faq .faq-lane__t {
  margin: 0 0 8px;
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
  color: var(--lime-400);
  letter-spacing: -0.01em;
}

.page-faq .faq-lane__d {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--faq-ink-dim);
}

/* ---------- 步骤 ---------- */
.page-faq .faq-steps {
  counter-reset: faqstep;
  list-style: none;
  margin: clamp(18px, 3vw, 28px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-step {
  position: relative;
  padding: 16px 18px 16px 62px;
  border-radius: var(--r-md);
  border: 1px solid var(--faq-line);
  background: var(--ink-800);
}

.page-faq .faq-step::before {
  counter-increment: faqstep;
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 18px;
  top: 15px;
  font-family: var(--font-mono);
  font-size: 21px;
  font-weight: 700;
  color: var(--lime-400);
  letter-spacing: -0.02em;
}

.page-faq .faq-step__t {
  margin: 0 0 5px;
  font-weight: 700;
  font-size: 15.5px;
  color: var(--white);
}

.page-faq .faq-step__d {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--faq-ink-dim);
}

.page-faq .faq-step__d a {
  color: var(--lime-400);
  text-decoration: none;
  border-bottom: 1px solid var(--lime-line);
}

/* ---------- 联系与反馈 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: 22px;
  margin-top: clamp(18px, 3vw, 28px);
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--lime-line);
  border-radius: var(--r-lg);
  background: linear-gradient(140deg, rgba(183, 243, 74, 0.1), transparent 66%), var(--ink-800);
}

.page-faq .faq-contact__label {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel-500);
}

.page-faq .faq-contact__mail {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.2vw, 21px);
  font-weight: 700;
  color: var(--white);
  word-break: break-all;
}

.page-faq .faq-copy {
  margin-bottom: 12px;
}

.page-faq .faq-contact__line {
  margin: 0 0 8px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--faq-ink-dim);
  word-break: break-word;
}

.page-faq .faq-contact__line span {
  display: inline-block;
  min-width: 62px;
  margin-right: 6px;
  color: var(--steel-500);
  font-size: 11px;
  letter-spacing: 0.12em;
}

.page-faq .faq-contact__hint {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--steel-500);
}

.page-faq .faq-contact__hint a {
  color: var(--lime-400);
  text-decoration: none;
  border-bottom: 1px solid var(--lime-line);
}

.page-faq .faq-feedback {
  display: grid;
  gap: 20px;
  margin-top: clamp(20px, 3.4vw, 32px);
}

.page-faq .faq-feedback .index {
  color: var(--lime-400);
  display: block;
  margin-bottom: 10px;
}

.page-faq .faq-tips {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.page-faq .faq-tips li {
  position: relative;
  padding-left: 20px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--faq-ink-dim);
}

.page-faq .faq-tips li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--lime-400);
  transform: rotate(45deg);
}

.page-faq .faq-feedback__note {
  margin: 16px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--steel-500);
}

.page-faq .faq-feedback__note a {
  color: var(--lime-400);
  text-decoration: none;
  border-bottom: 1px solid var(--lime-line);
}

.page-faq .faq-cta {
  margin-top: clamp(22px, 3.6vw, 34px);
  padding: clamp(20px, 3vw, 30px);
  border-radius: var(--r-lg);
  border: 1px solid var(--faq-line);
  background: linear-gradient(100deg, var(--ink-800), rgba(255, 90, 54, 0.1));
  display: grid;
  gap: 10px;
  justify-items: start;
}

.page-faq .faq-cta__t {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.6vw, 25px);
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-cta__d {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--faq-ink-dim);
  max-width: 56ch;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-lanes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-feedback {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 34px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
  }

  .page-faq .faq-shot--hero {
    transform: rotate(-1.4deg);
    box-shadow: 0 26px 60px rgba(0, 0, 0, 0.42);
  }

  .page-faq .faq-hero__acts .btn {
    min-width: 146px;
    text-align: center;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(212px, 252px) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 56px);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--head-h) + 22px);
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    overflow: visible;
    gap: 4px;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__list a {
    display: block;
    border-radius: 0 var(--r-sm) var(--r-sm) 0;
    border-left: 2px solid var(--faq-line);
    background: transparent;
    padding: 11px 14px;
    font-size: 14px;
    white-space: normal;
  }

  .page-faq .faq-rail__list a:hover,
  .page-faq .faq-rail__list a:focus-visible {
    border-left-color: var(--lime-400);
    background: rgba(183, 243, 74, 0.07);
  }

  .page-faq .faq-rail__card {
    display: block;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-lane,
  .page-faq .faq-item,
  .page-faq .faq-rail__list a,
  .page-faq .faq-mark::before,
  .page-faq .faq-mark::after,
  .page-faq .faq-shot--hero {
    transition: none;
    transform: none;
  }
}