.page-faq {
  --faq-side: 248px;
  --faq-side-gap: 44px;
  background:
    radial-gradient(circle at 88% 2%, rgba(0, 240, 255, 0.12), transparent 26%),
    radial-gradient(circle at 6% 18%, rgba(255, 102, 0, 0.08), transparent 32%),
    var(--bg-deep);
  color: var(--text);
  font-family: var(--font-body);
  position: relative;
  isolation: isolate;
}

.page-faq::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(0, 240, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 240, 255, 0.025) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.page-faq .faq-hero {
  padding: 72px 0 54px;
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -90px;
  top: -30px;
  width: 340px;
  height: 240px;
  background: linear-gradient(130deg, rgba(255, 102, 0, 0.20), rgba(0, 240, 255, 0.06) 60%, transparent);
  clip-path: polygon(32% 0, 100% 18%, 82% 100%, 0 78%);
  pointer-events: none;
}

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

.page-faq .faq-bread-sep {
  margin: 0 6px;
  color: var(--text-dim);
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: 32px;
  align-items: center;
  margin-top: 32px;
}

.page-faq .faq-hero-copy {
  max-width: 720px;
}

.page-faq .faq-hero-copy .section-label {
  margin-bottom: 14px;
  color: var(--orange);
  letter-spacing: 0.16em;
}

.page-faq .faq-hero-copy h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(30px, 4.6vw, 54px);
  line-height: 1.14;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-faq .faq-hero-desc {
  margin: 0 0 24px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--text-dim);
}

.page-faq .faq-tag-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-tag-filter .tag {
  display: inline-flex;
  align-items: center;
  padding: 7px 15px;
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--text-dim);
  background: rgba(19, 26, 43, 0.78);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  text-decoration: none;
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.page-faq .faq-tag-filter .tag:hover,
.page-faq .faq-tag-filter .tag:focus-visible {
  color: var(--cyan);
  border-color: var(--line-cyan);
  background: rgba(0, 240, 255, 0.08);
}

.page-faq .faq-hero-figure {
  width: 100%;
  margin: 0;
  border: 1px solid var(--line);
  border-right-color: rgba(0, 240, 255, 0.45);
  background: var(--bg-raised);
  box-shadow: 0 24px 50px rgba(0, 0, 0, 0.40), 0 0 0 1px rgba(0, 240, 255, 0.06);
  position: relative;
  overflow: hidden;
}

.page-faq .faq-hero-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 62%, rgba(11, 15, 26, 0.48) 100%);
  pointer-events: none;
}

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

.page-faq .faq-layout {
  display: grid;
  gap: 40px;
  padding-top: 56px;
  padding-bottom: 96px;
}

.page-faq .faq-side {
  position: relative;
  padding: 26px 22px 42px;
  background: rgba(19, 26, 43, 0.72);
  border: 1px solid var(--line);
  border-right: 1px solid var(--line-cyan);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.28);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-faq .faq-chapter {
  margin-bottom: 18px;
}

.page-faq .faq-chapter-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.page-faq .faq-chapter-list a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-left: 2px solid transparent;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dim);
  text-decoration: none;
  line-height: 1.4;
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.page-faq .faq-chapter-list a::after {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  margin-left: auto;
  background: transparent;
  transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-faq .faq-chapter-list a:hover,
.page-faq .faq-chapter-list a:focus-visible,
.page-faq .faq-chapter-list a.is-active {
  color: var(--text);
  border-left-color: var(--cyan);
  background: linear-gradient(90deg, rgba(0, 240, 255, 0.10), transparent 72%);
}

.page-faq .faq-chapter-list a:hover::after,
.page-faq .faq-chapter-list a.is-active::after {
  background: var(--cyan);
  box-shadow: 0 0 8px rgba(0, 240, 255, 0.8);
}

.page-faq .faq-chapter-list a.is-active kbd {
  background: var(--cyan);
  color: var(--bg-deep);
  border-color: var(--cyan);
}

.page-faq .faq-chapter-list kbd {
  min-width: 32px;
  height: 24px;
  padding: 0 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid var(--line-cyan);
  border-radius: 4px;
  box-sizing: border-box;
}

.page-faq .faq-kbd-note {
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-kbd-note-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.page-faq .faq-kbd-item {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 9px;
  font-size: 12px;
  color: var(--text-dim);
  line-height: 1.3;
}

.page-faq .faq-kbd-item kbd {
  flex: 0 0 auto;
  min-width: 34px;
  height: 22px;
  padding: 0 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--orange);
  background: rgba(255, 102, 0, 0.10);
  border: 1px solid var(--line-orange);
  border-radius: 4px;
  box-shadow: 0 2px 0 rgba(255, 102, 0, 0.22);
}

.page-faq .faq-content {
  display: grid;
  gap: 36px;
  min-width: 0;
}

.page-faq .faq-panel {
  position: relative;
  padding: 34px 26px 30px;
  background: rgba(19, 26, 43, 0.58);
  border: 1px solid var(--line);
  box-shadow: 0 16px 34px rgba(0, 0, 0, 0.24);
  overflow: hidden;
}

.page-faq .faq-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 84px;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), transparent);
}

.page-faq .faq-panel--orange::before {
  background: linear-gradient(90deg, var(--orange), transparent);
}

.page-faq .faq-panel-head {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 22px;
  padding-right: 24px;
}

.page-faq .faq-section-index {
  position: absolute;
  right: 0;
  top: -12px;
  font-family: var(--font-display);
  font-size: 58px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.02em;
  color: rgba(0, 240, 255, 0.12);
  pointer-events: none;
  user-select: none;
}

.page-faq .faq-panel--orange .faq-section-index {
  color: rgba(255, 102, 0, 0.14);
}

.page-faq .faq-icon {
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  margin-top: 2px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
  color: var(--cyan);
}

.page-faq .faq-panel--orange .faq-icon {
  color: var(--orange);
}

.page-faq .faq-panel-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.6vw, 28px);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-faq .faq-panel-desc {
  margin: 0;
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.6;
}

.page-faq .faq-list {
  display: grid;
  gap: 10px;
}

.page-faq .faq-item {
  background: rgba(11, 15, 26, 0.72);
  border: 1px solid var(--line);
  border-radius: 2px;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.page-faq .faq-item[open] {
  border-color: var(--line-cyan);
  background: rgba(11, 15, 26, 0.85);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
}

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

.page-faq .faq-item summary::after {
  content: "+";
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 400;
  color: var(--cyan);
  border: 1px solid var(--line-cyan);
  border-radius: 50%;
  background: rgba(0, 240, 255, 0.04);
  transition: transform 0.3s var(--ease), background 0.3s var(--ease), color 0.3s var(--ease);
}

.page-faq .faq-item[open] summary::after {
  transform: rotate(45deg);
  background: rgba(0, 240, 255, 0.14);
}

.page-faq .faq-panel--orange .faq-item summary::after {
  color: var(--orange);
  border-color: var(--line-orange);
  background: rgba(255, 102, 0, 0.04);
}

.page-faq .faq-panel--orange .faq-item[open] summary::after {
  background: rgba(255, 102, 0, 0.14);
}

.page-faq .faq-answer {
  padding: 0 18px 18px 22px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--text-dim);
}

.page-faq .faq-answer > *:first-child {
  margin-top: 0;
}

.page-faq .faq-answer p {
  margin: 0 0 12px;
}

.page-faq .faq-answer .btn {
  margin-top: 2px;
}

.page-faq .faq-replay-visual {
  margin: 20px 0 0;
  border: 1px solid var(--line);
  background: var(--bg-raised);
  overflow: hidden;
}

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

.page-faq .faq-replay-visual figcaption {
  padding: 10px 16px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-dim);
  background: rgba(11, 15, 26, 0.9);
  border-top: 1px solid var(--line);
}

.page-faq .faq-resources {
  margin-top: 26px;
  padding: 22px;
  background:
    linear-gradient(135deg, rgba(0, 240, 255, 0.08), transparent 42%),
    rgba(11, 15, 26, 0.72);
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
}

.page-faq .faq-resources h3 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: 0.03em;
  color: var(--text);
}

.page-faq .faq-resources ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-resources a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-faq .faq-resources a::before {
  content: "→";
  color: var(--orange);
  font-size: 15px;
  line-height: 1;
}

.page-faq .faq-resources a:hover,
.page-faq .faq-resources a:focus-visible {
  color: var(--cyan);
  transform: translateX(4px);
}

@media (min-width: 640px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
  }

  .page-faq .faq-resources ul {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, var(--faq-side)) minmax(0, 1fr);
    align-items: start;
    gap: var(--faq-side-gap);
  }

  .page-faq .faq-side {
    position: sticky;
    top: var(--chapter-sticky-top);
  }

  .page-faq .faq-panel {
    padding: 40px 32px 32px;
  }
}