.page-faq {
  --faq-line: rgba(56, 225, 208, 0.16);
  --faq-panel: rgba(16, 31, 63, 0.62);
}

.page-faq [id] {
  scroll-margin-top: calc(var(--header-h) + 28px);
}

.page-faq [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq [data-reveal][data-visible] {
  opacity: 1;
  transform: none;
}

/* ---------- 面包屑 ---------- */

.page-faq .faq-crumbs {
  padding-top: clamp(16px, 3vw, 26px);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(30px, 5vw, 56px) 0 clamp(38px, 7vw, 88px);
  background:
    radial-gradient(1080px 520px at 80% 10%, rgba(155, 140, 255, 0.2), transparent 62%),
    radial-gradient(760px 440px at 8% 92%, rgba(56, 225, 208, 0.14), transparent 66%),
    var(--c-void);
}

.page-faq .faq-hero-inner {
  display: grid;
  gap: clamp(30px, 5vw, 56px);
  align-items: center;
}

.page-faq .faq-hero-copy {
  max-width: 44ch;
}

.page-faq .faq-hero-copy h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 350;
  font-size: clamp(2.1rem, 6.4vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--c-paper);
}

.page-faq .faq-lede {
  margin: 18px 0 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-mist);
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-hero-art {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 250px;
}

.page-faq .orbit {
  position: absolute;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid rgba(56, 225, 208, 0.3);
}

.page-faq .orbit--1 {
  width: 42%;
  border-color: rgba(56, 225, 208, 0.55);
  box-shadow: 0 0 60px -18px rgba(56, 225, 208, 0.6);
}

.page-faq .orbit--2 {
  width: 64%;
  border-color: rgba(155, 140, 255, 0.36);
  border-style: dashed;
}

.page-faq .orbit--3 {
  width: 88%;
  border-color: rgba(255, 179, 92, 0.24);
}

.page-faq .orbit-core {
  width: 14%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, rgba(255, 179, 92, 0.95), rgba(56, 225, 208, 0.35) 65%, transparent 78%);
  animation: faqBreath 2.4s var(--ease) infinite;
}

@keyframes faqBreath {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* ---------- 通用区块 ---------- */

.page-faq .section {
  padding: clamp(44px, 8vw, 88px) 0;
}

.page-faq .section-head {
  max-width: 58ch;
  margin-bottom: clamp(22px, 4vw, 36px);
}

.page-faq .section-note {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-mist);
}

/* ---------- 快速入口 ---------- */

.page-faq .faq-entry {
  background: var(--c-void);
}

.page-faq .entry-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}

.page-faq .entry-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 18px 22px;
  border-radius: var(--radius-m);
  border: 1px solid var(--glass-line);
  background: linear-gradient(180deg, rgba(16, 31, 63, 0.9), rgba(11, 22, 48, 0.86));
  text-decoration: none;
  transition: transform 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-faq .entry-card:hover,
.page-faq .entry-card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--c-neon);
}

.page-faq .entry-index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-neon);
}

.page-faq .entry-name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 400;
  color: var(--c-paper);
}

.page-faq .entry-note {
  font-size: 13px;
  line-height: 1.65;
  color: var(--c-mist);
}

/* ---------- 分步教程 ---------- */

.page-faq .faq-record {
  background: linear-gradient(180deg, var(--c-void), var(--c-night) 60%, var(--c-void));
}

.page-faq .faq-figure {
  margin: 0 0 clamp(24px, 4vw, 38px);
}

.page-faq .faq-figure .figure-media {
  border-color: var(--faq-line);
}

.page-faq .step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .step-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 18px;
  border-radius: var(--radius-m);
  border: 1px solid var(--faq-line);
  background: var(--faq-panel);
  transition: border-color 0.22s var(--ease), background 0.22s var(--ease);
}

.page-faq .step-card:hover {
  border-color: rgba(56, 225, 208, 0.48);
  background: rgba(16, 31, 63, 0.82);
}

.page-faq .step-num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 24px;
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--c-neon);
}

@supports (-webkit-text-stroke: 1px red) {
  .page-faq .step-num {
    color: transparent;
    -webkit-text-stroke: 1px var(--c-neon);
  }
}

.page-faq .step-text {
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-paper);
}

.page-faq .step-text a {
  color: var(--c-neon);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .record-foot {
  margin-top: clamp(22px, 4vw, 34px);
  padding-left: 16px;
  border-left: 2px solid rgba(255, 179, 92, 0.55);
}

.page-faq .record-foot p {
  margin: 0 0 10px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-mist);
}

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

.page-faq .record-foot a {
  color: var(--c-amber);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 折叠问答 ---------- */

.page-faq .faq-qa {
  background: var(--c-void);
}

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

.page-faq .faq-item {
  border-radius: var(--radius-m);
  border: 1px solid var(--faq-line);
  background: var(--faq-panel);
  overflow: hidden;
  transition: border-color 0.22s var(--ease);
}

.page-faq .faq-item[open] {
  border-color: rgba(56, 225, 208, 0.42);
  background: rgba(16, 31, 63, 0.82);
}

.page-faq .faq-q {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 17px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.55;
  color: var(--c-paper);
}

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

.page-faq .faq-q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--c-neon);
}

.page-faq .faq-item[open] .faq-q::after {
  content: "–";
}

.page-faq .faq-a {
  padding: 0 18px 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-mist);
}

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

.page-faq .faq-a a {
  color: var(--c-neon);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 术语小词典 ---------- */

.page-faq .faq-glossary {
  background: var(--c-void);
}

.page-faq .glossary {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-l);
  padding: clamp(22px, 4vw, 40px);
  background: var(--c-paper);
  color: var(--ink-on-paper);
}

.page-faq .gloss-bg {
  position: absolute;
  inset: 0;
  opacity: 0.22;
  pointer-events: none;
}

.page-faq .gloss-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-faq .gloss-inner {
  position: relative;
}

.page-faq .glossary .index-label {
  color: var(--ink-soft-on-paper);
}

.page-faq .glossary .section-title {
  color: var(--ink-on-paper);
}

.page-faq .glossary .section-note {
  color: var(--ink-soft-on-paper);
}

.page-faq .gloss-table {
  margin: 0;
  display: grid;
}

.page-faq .gloss-row {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px dashed rgba(11, 22, 48, 0.24);
}

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

.page-faq .gloss-term {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--ink-on-paper);
}

.page-faq .gloss-def {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft-on-paper);
}

/* ---------- 支持路径 ---------- */

.page-faq .faq-support {
  background: var(--c-void);
  padding-bottom: clamp(56px, 9vw, 104px);
}

.page-faq .support-panel {
  padding: clamp(24px, 4vw, 46px);
  border-radius: var(--radius-l);
}

.page-faq .support-panel .index-label {
  color: var(--ink-soft-on-paper);
}

.page-faq .support-panel .section-title {
  color: var(--ink-on-paper);
  margin-top: 12px;
}

.page-faq .support-lede {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-soft-on-paper);
}

.page-faq .support-list {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
  max-width: 62ch;
}

.page-faq .support-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-on-paper);
}

.page-faq .support-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-neon);
}

.page-faq .support-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .support-actions .btn--ghost {
  color: var(--ink-on-paper);
  border-color: rgba(11, 22, 48, 0.25);
}

.page-faq .support-actions .btn--ghost:hover,
.page-faq .support-actions .btn--ghost:focus-visible {
  border-color: var(--ink-on-paper);
}

/* ---------- 断点 ---------- */

@media (min-width: 640px) {
  .page-faq .entry-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-faq .gloss-row {
    grid-template-columns: minmax(150px, 220px) 1fr;
    gap: 22px;
    align-items: baseline;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-faq .faq-hero-art {
    min-height: 380px;
  }

  .page-faq .entry-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .step-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .page-faq .step-card:nth-child(5) {
    grid-column: 1 / -1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-faq .orbit-core {
    animation: none;
  }

  .page-faq .entry-card,
  .page-faq .step-card,
  .page-faq .faq-item {
    transition: none;
  }
}