.page-faq {
  --tut-panel-gap: 10px;
  background: var(--cs-navy);
  color: var(--cs-ivory);
}

/* ---------- 封面 ---------- */
.page-faq .tut-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(104px, 16vw, 164px) 0 clamp(40px, 6vw, 72px);
  background:
    radial-gradient(110% 80% at 78% 0%, rgba(212, 175, 55, 0.14), transparent 62%),
    radial-gradient(90% 70% at 4% 100%, rgba(30, 122, 76, 0.16), transparent 60%),
    linear-gradient(180deg, var(--cs-navy) 0%, #091729 100%);
  border-bottom: 1px solid var(--cs-line-strong);
}

.page-faq .tut-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(245, 242, 234, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(245, 242, 234, 0.055) 1px, transparent 1px);
  background-size: 64px 64px;
}

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

.page-faq .cs-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--cs-font-data);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cs-steel);
}

.page-faq .cs-breadcrumb a {
  color: var(--cs-steel);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--cs-t), border-color var(--cs-t);
}

.page-faq .cs-breadcrumb a:hover,
.page-faq .cs-breadcrumb a:focus-visible {
  color: var(--cs-gold-hi);
  border-bottom-color: var(--cs-gold-hi);
}

.page-faq .cs-breadcrumb [aria-current="page"] {
  color: var(--cs-ivory);
}

.page-faq .tut-hero__kicker {
  margin: clamp(20px, 3vw, 32px) 0 12px;
  font-family: var(--cs-font-data);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--cs-gold);
}

.page-faq .tut-hero__title {
  margin: 0 0 18px;
  max-width: 16ch;
  font-family: var(--cs-font-display);
  font-weight: 900;
  font-size: clamp(34px, 7.2vw, 72px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--cs-ivory);
}

.page-faq .tut-hero__lede {
  margin: 0 0 clamp(28px, 4vw, 44px);
  max-width: 62ch;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.8;
  color: rgba(245, 242, 234, 0.78);
}

.page-faq .tut-hero__index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--cs-line);
  border: 1px solid var(--cs-line);
}

.page-faq .tut-hero__index li {
  margin: 0;
  background: rgba(11, 30, 58, 0.74);
}

.page-faq .tut-hero__index a {
  display: block;
  padding: 14px 14px 16px;
  font-size: 13px;
  line-height: 1.45;
  color: var(--cs-ivory);
  text-decoration: none;
  transition: background var(--cs-t), color var(--cs-t);
}

.page-faq .tut-hero__index a:hover,
.page-faq .tut-hero__index a:focus-visible {
  background: rgba(212, 175, 55, 0.14);
  color: var(--cs-gold-hi);
}

.page-faq .tut-hero__index span {
  display: block;
  margin-bottom: 6px;
  font-family: var(--cs-font-data);
  font-size: 15px;
  color: var(--cs-gold);
}

/* ---------- 步骤骨架 ---------- */
.page-faq .tut-step {
  padding: clamp(38px, 6vw, 76px) 0;
  border-bottom: 1px solid var(--cs-line);
}

.page-faq .tut-step__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 3vw, 28px);
}

.page-faq .tut-step__rail {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 14px;
}

.page-faq .tut-step__rail .cs-coord__num {
  display: grid;
  place-items: center;
  width: 60px;
  height: 60px;
  border: 1px solid var(--cs-steel);
  border-radius: 50%;
  background: rgba(245, 242, 234, 0.03);
  font-family: var(--cs-font-data);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  line-height: 1;
  color: var(--cs-steel);
  transition: color var(--cs-t), border-color var(--cs-t), box-shadow var(--cs-t);
}

.page-faq .tut-step.is-active .cs-coord__num,
.page-faq .tut-step .cs-coord__num.is-active {
  color: var(--cs-gold);
  border-color: var(--cs-gold);
  box-shadow: 0 0 0 6px rgba(212, 175, 55, 0.1);
}

.page-faq .tut-step__label {
  font-family: var(--cs-font-data);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cs-steel);
}

.page-faq .tut-step__title {
  margin: 0 0 16px;
  font-family: var(--cs-font-display);
  font-weight: 900;
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--cs-ivory);
}

.page-faq .tut-step__body > p,
.page-faq .tut-step__col > p {
  margin: 0 0 16px;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(245, 242, 234, 0.8);
}

.page-faq .tut-step__body a,
.page-faq .tut-step__col a,
.page-faq .tut-outro a {
  color: var(--cs-gold-hi);
}

.page-faq .tut-step__body p a,
.page-faq .tut-step__col p a {
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 206, 122, 0.45);
  transition: border-color var(--cs-t);
}

.page-faq .tut-step__body p a:hover,
.page-faq .tut-step__col p a:hover {
  border-bottom-color: var(--cs-gold-hi);
}

/* ---------- 清单与有序清单 ---------- */
.page-faq .tut-list,
.page-faq .tut-steps-list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  max-width: 70ch;
}

.page-faq .tut-list li,
.page-faq .tut-steps-list li {
  position: relative;
  padding: 12px 0 12px 28px;
  border-top: 1px solid var(--cs-line);
  font-size: 15px;
  line-height: 1.75;
  color: rgba(245, 242, 234, 0.8);
}

.page-faq .tut-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  width: 12px;
  height: 1px;
  background: var(--cs-gold);
}

.page-faq .tut-steps-list {
  counter-reset: tutcount;
}

.page-faq .tut-steps-list li::before {
  counter-increment: tutcount;
  content: counter(tutcount, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 13px;
  font-family: var(--cs-font-data);
  font-size: 12px;
  color: var(--cs-green-hi);
}

.page-faq .tut-steps-list strong {
  color: var(--cs-ivory);
  font-weight: 500;
}

/* ---------- 折叠面板 ---------- */
.page-faq .tut-panel {
  margin: 0 0 var(--tut-panel-gap);
  border: 1px solid var(--cs-line);
  border-left: 2px solid var(--cs-line);
  background: rgba(245, 242, 234, 0.04);
  transition: border-color var(--cs-t), background var(--cs-t);
}

.page-faq .tut-panel[open] {
  border-left-color: var(--cs-green);
  background: rgba(30, 122, 76, 0.12);
}

.page-faq .tut-panel > summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--cs-ivory);
}

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

.page-faq .tut-panel > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--cs-font-data);
  font-size: 18px;
  line-height: 1;
  color: var(--cs-gold);
}

.page-faq .tut-panel[open] > summary::after {
  content: "\2013";
}

.page-faq .tut-panel > summary:focus-visible {
  outline: 1px solid var(--cs-gold-hi);
  outline-offset: -2px;
}

.page-faq .tut-panel__tag {
  font-family: var(--cs-font-data);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cs-gold);
  white-space: nowrap;
}

.page-faq .tut-panel__body {
  padding: 0 18px 18px;
  max-width: 70ch;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(245, 242, 234, 0.78);
}

.page-faq .tut-panel__body p {
  margin: 0;
}

/* ---------- 图片 ---------- */
.page-faq .tut-figure {
  margin: clamp(22px, 3vw, 32px) 0 0;
}

.page-faq .tut-figure__frame {
  position: relative;
  padding: 10px;
  border: 1px solid var(--cs-line);
  background: var(--cs-navy-2);
}

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

.page-faq .tut-figure__cap {
  margin: 10px 0 0;
  font-family: var(--cs-font-data);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--cs-steel);
}

/* ---------- 提示横带 ---------- */
.page-faq .tut-tip {
  display: grid;
  gap: 8px;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 18px 20px;
  max-width: 78ch;
  background: var(--cs-ivory);
  border-left: 4px solid var(--cs-alert);
}

.page-faq .tut-tip__label {
  font-family: var(--cs-font-data);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cs-alert);
}

.page-faq .tut-tip p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: #23262c;
}

.page-faq .tut-tip a {
  color: #0f3d6b;
  text-decoration: none;
  border-bottom: 1px solid rgba(15, 61, 107, 0.45);
}

.page-faq .tut-tip a:hover {
  border-bottom-color: #0f3d6b;
}

/* ---------- 收尾 ---------- */
.page-faq .tut-outro {
  padding: clamp(44px, 7vw, 88px) 0;
  background: linear-gradient(180deg, #091729 0%, var(--cs-navy) 100%);
  border-top: 1px solid var(--cs-line-strong);
}

.page-faq .tut-outro__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 36px);
  align-items: center;
}

.page-faq .tut-outro__title {
  margin: 0 0 12px;
  font-family: var(--cs-font-display);
  font-weight: 900;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--cs-ivory);
}

.page-faq .tut-outro__text {
  margin: 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(245, 242, 234, 0.75);
}

.page-faq .tut-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .tut-hero__index {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .tut-step__inner {
    grid-template-columns: 128px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .tut-step__rail {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    position: sticky;
    top: 112px;
    align-self: start;
  }
}

@media (min-width: 1080px) {
  .page-faq .tut-hero__index {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-faq .tut-step__body--split {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
    column-gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-faq .tut-step__body--split .tut-figure {
    margin-top: 0;
  }

  .page-faq .tut-outro__grid {
    grid-template-columns: minmax(0, 1fr) auto;
  }
}