.page-faq {
  --faq-gap: clamp(0.9rem, 2.5vw, 1.5rem);
  --faq-ink: #0B211C;
  --faq-ink-soft: #33514A;
  --faq-paper-line: #D8D2C2;
  position: relative;
  color: var(--text);
  background:
    radial-gradient(120% 70% at 88% 0%, rgba(53, 224, 208, 0.12), transparent 58%),
    radial-gradient(100% 60% at 2% 34%, rgba(216, 169, 74, 0.1), transparent 62%),
    var(--ink-900);
  padding-bottom: clamp(2.6rem, 6vw, 4.5rem);
  overflow-x: clip;
}

.page-faq .faq-hero {
  padding: clamp(1.2rem, 3.4vw, 2.4rem) 0 clamp(1.4rem, 4vw, 2.6rem);
}

.page-faq .faq-section {
  padding: clamp(1.8rem, 5vw, 3.4rem) 0;
}

.page-faq .breadcrumb {
  margin-bottom: 1.1rem;
  font-size: 0.82rem;
}

.page-faq .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  list-style: none;
  margin: 0;
  padding: 0;
  color: var(--muted);
}

.page-faq .breadcrumb__list li + li::before {
  content: "/";
  margin-right: 0.45rem;
  color: var(--line);
}

.page-faq .breadcrumb__list a {
  color: var(--muted);
  text-decoration: none;
}

.page-faq .breadcrumb__list a:hover {
  color: var(--cyan);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.85fr);
    gap: 2.2rem;
  }
}

.page-faq .faq-title {
  margin: 0.55rem 0 0;
  font-size: clamp(2rem, 6.2vw, 3.6rem);
  line-height: 1.1;
  letter-spacing: 0.045em;
  font-weight: 800;
  text-wrap: balance;
}

.page-faq .faq-lede {
  margin: 1rem 0 0;
  max-width: 56ch;
  color: var(--muted);
  font-size: clamp(0.97rem, 1.6vw, 1.08rem);
  line-height: 1.9;
}

.page-faq .faq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.4rem;
}

.page-faq .faq-side {
  margin-top: 1.6rem;
  padding: 1.2rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(18, 58, 49, 0.6);
}

@media (min-width: 960px) {
  .page-faq .faq-side {
    margin-top: 2.7rem;
  }
}

.page-faq .faq-side__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-faq .faq-side__list {
  list-style: none;
  margin: 0.8rem 0 1rem;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.page-faq .faq-side__list a {
  position: relative;
  display: block;
  padding-left: 1rem;
  color: var(--text);
  text-decoration: none;
  font-size: 0.92rem;
  line-height: 1.65;
}

.page-faq .faq-side__list a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
}

.page-faq .faq-side__list a:hover {
  color: var(--cyan);
}

.page-faq .faq-side .status {
  margin: 0;
  font-size: 0.75rem;
}

.page-faq .faq-stats {
  list-style: none;
  margin: clamp(1.6rem, 4vw, 2.4rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

@media (min-width: 760px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-faq .faq-stat {
  background: rgba(7, 28, 24, 0.88);
  padding: 0.95rem 1rem 1rem;
}

.page-faq .faq-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 3.6vw, 1.7rem);
  color: var(--gold-soft);
  letter-spacing: 0.02em;
}

.page-faq .faq-stat__label {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  color: var(--muted);
}

.page-faq .faq-section__head {
  max-width: 62ch;
  margin-bottom: clamp(1.1rem, 3vw, 1.8rem);
}

.page-faq .faq-h2 {
  margin: 0.5rem 0 0;
  font-size: clamp(1.45rem, 4vw, 2.15rem);
  line-height: 1.24;
  letter-spacing: 0.045em;
  font-weight: 800;
}

.page-faq .faq-sub {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.85;
}

.page-faq .steps {
  position: relative;
  display: grid;
  gap: 1.05rem;
  padding-top: 0.9rem;
}

.page-faq .steps-line {
  display: none;
}

.page-faq .step {
  position: relative;
  padding: 1.85rem 1.15rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(18, 58, 49, 0.88), rgba(12, 42, 36, 0.94));
  box-shadow: var(--shadow-lift);
}

.page-faq .step__num {
  position: absolute;
  top: -0.85rem;
  left: 1.15rem;
  margin: 0;
  padding: 0.28rem 0.62rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--cyan);
  background: var(--ink-950);
  border: 1px solid rgba(53, 224, 208, 0.5);
  border-radius: var(--radius-pill);
}

.page-faq .step__title {
  margin: 0.2rem 0 0.45rem;
  font-size: 1.06rem;
  letter-spacing: 0.03em;
}

.page-faq .step__text {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.8;
}

.page-faq .step-note {
  margin-top: 0.85rem;
  padding-top: 0.7rem;
  border-top: 1px dashed rgba(46, 90, 78, 0.9);
}

.page-faq .step-note summary {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  list-style: none;
  cursor: pointer;
  color: var(--cyan);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}

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

.page-faq .step-note summary::after {
  content: "+";
  font-family: var(--font-mono);
}

.page-faq .step-note[open] summary::after {
  content: "–";
}

.page-faq .step-note p {
  margin: 0.6rem 0 0;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.8;
}

@media (min-width: 880px) {
  .page-faq .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.3rem;
    padding-top: 1.6rem;
  }

  .page-faq .steps-line {
    display: block;
    position: absolute;
    left: 8%;
    right: 8%;
    top: 0.75rem;
    height: 2px;
    border-radius: 2px;
    background: linear-gradient(90deg, rgba(53, 224, 208, 0.15), var(--cyan) 22%, var(--cyan) 78%, rgba(53, 224, 208, 0.15));
  }

  .page-faq .step {
    padding-top: 1.6rem;
  }
}

.page-faq .steps-media {
  margin: clamp(1.2rem, 3vw, 1.7rem) 0 0;
}

.page-faq .answers-layout {
  display: grid;
  gap: clamp(1.2rem, 3vw, 2rem);
}

@media (min-width: 1040px) {
  .page-faq .answers-layout {
    grid-template-columns: minmax(0, 248px) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .answers-nav {
    position: sticky;
    top: calc(var(--header-offset) + 0.8rem);
  }
}

.page-faq .answers-nav {
  padding: 1rem 1rem 1.05rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(18, 58, 49, 0.58);
}

.page-faq .answers-nav__title {
  margin: 0 0 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-faq .answers-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.3rem;
}

.page-faq .answers-nav__link {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.5rem 0.55rem;
  border-left: 2px solid transparent;
  border-radius: var(--radius-md);
  color: var(--text);
  text-decoration: none;
  font-size: 0.9rem;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .answers-nav__link span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--gold-soft);
}

.page-faq .answers-nav__link:hover {
  background: rgba(53, 224, 208, 0.1);
}

.page-faq .answers-nav__link[aria-current="true"] {
  border-left-color: var(--cyan);
  background: rgba(53, 224, 208, 0.12);
  color: var(--cyan);
}

.page-faq .answers-nav__foot {
  display: grid;
  gap: 0.5rem;
  margin-top: 0.9rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--line);
}

.page-faq .qa-group {
  margin-bottom: clamp(1.5rem, 4vw, 2.3rem);
}

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

.page-faq .qa-group__title {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  margin: 0 0 0.85rem;
  font-size: clamp(1.08rem, 2.6vw, 1.3rem);
  letter-spacing: 0.05em;
}

.page-faq .qa-group__idx {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-faq .qa {
  margin-bottom: 0.7rem;
  background: var(--paper);
  color: var(--faq-ink);
  border: 1px solid var(--faq-paper-line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-faq .qa[open] {
  box-shadow: 0 16px 32px -26px rgba(0, 0, 0, 0.9);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.92rem 1rem;
  list-style: none;
  cursor: pointer;
  font-size: 0.94rem;
  font-weight: 600;
  line-height: 1.65;
}

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

.page-faq .qa__q::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  color: #8A6A1F;
}

.page-faq .qa[open] .qa__q::after {
  content: "–";
}

.page-faq .qa__a {
  margin: 0 1rem;
  padding: 0.8rem 0 1rem;
  border-top: 1px solid #E3DCCB;
  color: var(--faq-ink-soft);
  font-size: 0.89rem;
  line-height: 1.85;
}

.page-faq .qa__a p {
  margin: 0 0 0.6rem;
}

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

.page-faq .qa__a a {
  color: #0F6B5C;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .qa__next {
  font-size: 0.84rem;
  color: #4A635B;
}

.page-faq .fault-tree {
  margin: 0 0 1.1rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(12, 42, 36, 0.72);
}

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

.page-faq .ft-line {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 1.6;
  opacity: 0.75;
}

.page-faq .ft-node {
  fill: rgba(7, 28, 24, 0.92);
  stroke: rgba(216, 169, 74, 0.7);
  stroke-width: 1.4;
}

.page-faq .ft-node--root {
  fill: rgba(216, 169, 74, 0.18);
  stroke: var(--gold);
}

.page-faq .ft-label {
  fill: var(--text);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
}

.page-faq .ft-leaf {
  fill: var(--muted);
  font-family: var(--font-sans);
  font-size: 11.5px;
}

.page-faq .sync-media {
  margin: 0 0 1.1rem;
}

.page-faq .prep-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 900px) {
  .page-faq .prep-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.95fr);
    align-items: start;
    gap: 1.4rem;
  }
}

.page-faq .prep-list {
  padding: clamp(1rem, 2.6vw, 1.5rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(18, 58, 49, 0.62);
}

.page-faq .prep-list__items {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-faq .prep-list__items li {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
}

.page-faq .prep-list__idx {
  flex: 0 0 auto;
  padding: 0.2rem 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--cyan);
  border: 1px solid rgba(53, 224, 208, 0.45);
  border-radius: var(--radius-pill);
}

.page-faq .prep-list__items h3 {
  margin: 0 0 0.3rem;
  font-size: 0.97rem;
  letter-spacing: 0.03em;
}

.page-faq .prep-list__items p {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.8;
}

.page-faq .prep-contact {
  padding: clamp(1rem, 2.6vw, 1.5rem);
  background: var(--paper);
  color: var(--faq-ink);
  border: 1px solid var(--faq-paper-line);
  border-radius: var(--radius-lg);
}

.page-faq .prep-contact h3 {
  margin: 0 0 0.85rem;
  font-size: 1.02rem;
  letter-spacing: 0.04em;
  color: var(--faq-ink);
}

.page-faq .contact-line {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 0.6rem;
  margin: 0 0 0.7rem;
  font-size: 0.89rem;
  line-height: 1.7;
}

.page-faq .contact-line__label {
  min-width: 4.8rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: #8A6A1F;
}

.page-faq .contact-line__value {
  color: var(--faq-ink-soft);
  overflow-wrap: anywhere;
}

.page-faq .prep-note {
  margin: 0.4rem 0 1rem;
  padding-top: 0.8rem;
  border-top: 1px solid #E3DCCB;
  font-size: 0.82rem;
  line-height: 1.75;
  color: #4A635B;
}

.page-faq .faq-next {
  display: grid;
  gap: 0.9rem;
  margin-top: clamp(1.4rem, 4vw, 2.2rem);
  padding-top: clamp(1rem, 3vw, 1.4rem);
  border-top: 1px solid var(--line);
}

@media (min-width: 760px) {
  .page-faq .faq-next {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 1.5rem;
  }
}

.page-faq .faq-next p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.8;
}

.page-faq .faq-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .answers-nav__link {
    transition: none;
  }
}