.page-faq {
  --qa-color: var(--cyan);
  --qa-ease: cubic-bezier(.22, .61, .36, 1);
  background: var(--ink);
  color: var(--text);
  padding-bottom: clamp(2.5rem, 6vw, 4.5rem);
  overflow-x: clip;
}

.page-faq .shell {
  padding-top: clamp(.9rem, 2vw, 1.4rem);
}

.page-faq .breadcrumbs a {
  color: var(--text-dim);
}

.page-faq .breadcrumbs a:hover,
.page-faq .breadcrumbs a:focus-visible {
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: clamp(1.4rem, 3.6vw, 2.6rem) 0 clamp(1.5rem, 3.4vw, 2.4rem);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -14%;
  width: min(64%, 540px);
  aspect-ratio: 1 / 1;
  background: conic-gradient(from 200deg,
      rgba(57, 217, 138, .28),
      rgba(255, 138, 61, .24),
      rgba(232, 184, 75, .2),
      rgba(74, 168, 255, .26),
      rgba(57, 217, 138, .28));
  clip-path: polygon(30% 0, 100% 0, 100% 92%, 0 68%);
  opacity: .55;
  pointer-events: none;
}

.page-faq .faq-hero .eyebrow {
  position: relative;
  color: var(--gold);
}

.page-faq .faq-hero h1 {
  position: relative;
  margin: .5rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.95rem, 6.2vw, 3.9rem);
  line-height: 1.02;
  letter-spacing: -.02em;
  max-width: 18em;
}

.page-faq .faq-lede {
  position: relative;
  margin: 1rem 0 0;
  max-width: 40em;
  font-size: clamp(.94rem, 1.6vw, 1.06rem);
  line-height: 1.8;
  color: var(--text-dim);
}

.page-faq .faq-facts {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: .45rem 1.4rem;
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
  font-size: .8rem;
  color: var(--text-dim);
}

.page-faq .faq-facts li {
  display: inline-flex;
  align-items: baseline;
  gap: .32rem;
}

.page-faq .faq-facts .mono {
  color: var(--gold);
  font-size: .95rem;
  font-weight: 700;
}

/* ---------- 布局 ---------- */

.page-faq .faq-layout {
  display: grid;
  gap: clamp(1.2rem, 2.6vw, 2rem);
  padding-top: clamp(1.2rem, 2.8vw, 2rem);
}

.page-faq .faq-main {
  min-width: 0;
}

/* ---------- 索引 ---------- */

.page-faq .faq-index {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(158deg, rgba(17, 20, 24, .96), rgba(12, 31, 26, .92));
  padding: clamp(.9rem, 2.2vw, 1.15rem);
}

.page-faq .faq-index-title {
  margin: 0 0 .75rem;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .4rem;
}

.page-faq .faq-index-list a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: .45rem;
  padding: .5rem .65rem;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  background: rgba(91, 107, 102, .12);
  color: var(--text);
  font-size: .8rem;
  line-height: 1.3;
  text-decoration: none;
  transition: background .18s var(--qa-ease), border-color .18s var(--qa-ease), transform .18s var(--qa-ease);
}

.page-faq .faq-index-list a:hover,
.page-faq .faq-index-list a:focus-visible {
  background: rgba(94, 242, 232, .12);
  border-color: var(--cyan);
  transform: translateX(2px);
}

.page-faq .faq-index-list a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-index-num {
  color: var(--gold);
  font-size: .74rem;
  font-weight: 700;
}

.page-faq .faq-index-count {
  color: var(--grid);
  font-size: .7rem;
}

.page-faq .faq-index-note {
  margin: .85rem 0 0;
  padding-top: .75rem;
  border-top: 1px dashed var(--line-soft);
  font-size: .76rem;
  line-height: 1.65;
  color: var(--text-dim);
}

/* ---------- 问题区块 ---------- */

.page-faq .faq-block {
  padding-top: clamp(1.3rem, 3vw, 2rem);
  scroll-margin-top: 1.25rem;
}

.page-faq .faq-block + .faq-block {
  margin-top: clamp(1.6rem, 3.4vw, 2.6rem);
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-block--spring { --qa-color: var(--spring); }
.page-faq .faq-block--summer { --qa-color: var(--summer); }
.page-faq .faq-block--winter { --qa-color: var(--winter); }
.page-faq .faq-block--autumn { --qa-color: var(--autumn); }
.page-faq .faq-block--cyan { --qa-color: var(--cyan); }

.page-faq .faq-block-head {
  display: flex;
  align-items: baseline;
  gap: .7rem;
  flex-wrap: wrap;
}

.page-faq .faq-block-num {
  font-size: clamp(1.8rem, 5.6vw, 3rem);
  line-height: .9;
  font-weight: 800;
  color: var(--qa-color);
  opacity: .7;
}

.page-faq .faq-block-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.15rem, 2.8vw, 1.6rem);
  letter-spacing: -.01em;
}

.page-faq .faq-block-head::after {
  content: "";
  flex: 1 1 60px;
  height: 1px;
  min-width: 40px;
  background: linear-gradient(90deg, var(--qa-color), transparent);
  opacity: .45;
  transform: translateY(-.35rem);
}

.page-faq .faq-block-lead {
  margin: .6rem 0 1rem;
  max-width: 34em;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--text-dim);
}

/* ---------- 问答 ---------- */

.page-faq .qa {
  position: relative;
  margin-bottom: .6rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
  transition: border-color .18s var(--qa-ease), background .18s var(--qa-ease);
}

.page-faq .qa::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--qa-color);
  opacity: .3;
  transition: width .2s var(--qa-ease), opacity .2s var(--qa-ease);
}

.page-faq .qa:hover {
  border-color: rgba(94, 242, 232, .32);
}

.page-faq .qa[open] {
  border-color: rgba(94, 242, 232, .4);
  background: linear-gradient(160deg, rgba(23, 32, 29, .95), rgba(17, 20, 24, .98));
}

.page-faq .qa[open]::before {
  width: 5px;
  opacity: 1;
}

.page-faq .qa summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: .65rem;
  padding: .85rem .9rem .85rem 1.05rem;
  list-style: none;
  cursor: pointer;
  transition: background .18s var(--qa-ease);
}

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

.page-faq .qa summary:hover {
  background: rgba(94, 242, 232, .05);
}

.page-faq .qa summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -3px;
  border-radius: var(--radius);
}

.page-faq .qa summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--qa-color);
  transition: transform .2s var(--qa-ease);
}

.page-faq .qa[open] summary::after {
  content: "−";
}

.page-faq .qa-num {
  font-size: .72rem;
  font-weight: 700;
  color: var(--qa-color);
  letter-spacing: .04em;
}

.page-faq .qa-title {
  font-size: clamp(.9rem, 1.5vw, 1rem);
  font-weight: 700;
  line-height: 1.45;
  overflow-wrap: break-word;
}

.page-faq .qa-body {
  padding: 0 1.05rem 1rem 1.05rem;
  display: grid;
  gap: .55rem;
  font-size: .88rem;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-faq .qa-body p {
  margin: 0;
}

.page-faq .qa-body a {
  color: var(--cyan);
  text-underline-offset: 3px;
}

.page-faq .qa-body a:hover,
.page-faq .qa-body a:focus-visible {
  color: var(--gold);
}

.page-faq .qa-body .mono {
  color: var(--text);
  font-size: .86em;
  overflow-wrap: anywhere;
}

/* ---------- 配图 ---------- */

.page-faq .faq-figure {
  margin: 1.15rem 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  object-fit: cover;
  background: var(--ink-deep);
}

.page-faq .faq-figure figcaption {
  margin-top: .5rem;
  font-size: .76rem;
  line-height: 1.6;
  color: var(--grid);
}

/* ---------- 联系准备清单 ---------- */

.page-faq .faq-prep {
  position: relative;
  margin-top: clamp(1.8rem, 4vw, 3rem);
  padding: clamp(1.15rem, 3.2vw, 2.2rem);
  border-radius: var(--radius-lg);
  background: var(--paper);
  color: var(--paper-ink);
  overflow: hidden;
}

.page-faq .faq-prep::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -16%;
  width: min(70%, 380px);
  aspect-ratio: 1 / 1;
  background: conic-gradient(from 160deg,
      rgba(57, 217, 138, .32),
      rgba(255, 138, 61, .3),
      rgba(232, 184, 75, .3),
      rgba(74, 168, 255, .32),
      rgba(57, 217, 138, .32));
  clip-path: polygon(24% 0, 100% 0, 100% 100%, 0 84%);
  opacity: .35;
  pointer-events: none;
}

.page-faq .faq-prep .eyebrow {
  position: relative;
  color: #4a5a52;
}

.page-faq .faq-prep h2 {
  position: relative;
  margin: .35rem 0 1rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.15rem, 3vw, 1.55rem);
  letter-spacing: -.01em;
  color: var(--paper-ink);
}

.page-faq .faq-prep-list {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .55rem;
}

.page-faq .faq-prep-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .7rem;
  align-items: baseline;
  padding-bottom: .55rem;
  border-bottom: 1px solid rgba(22, 33, 29, .14);
  font-size: .88rem;
  line-height: 1.65;
}

.page-faq .faq-prep-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-prep-list .mono {
  font-size: .76rem;
  font-weight: 700;
  color: #1c6b4c;
}

.page-faq .faq-prep-foot {
  position: relative;
  margin: 1.1rem 0 0;
  padding-top: .9rem;
  border-top: 1px dashed rgba(22, 33, 29, .24);
  font-size: .8rem;
  line-height: 1.85;
  color: #3a4a43;
  overflow-wrap: anywhere;
}

.page-faq .faq-prep-foot .mono {
  color: #16211d;
  font-weight: 700;
}

.page-faq .faq-prep-foot a {
  color: #14624a;
  text-underline-offset: 3px;
}

.page-faq .faq-prep-foot a:hover,
.page-faq .faq-prep-foot a:focus-visible {
  color: #0c1f1a;
  background: rgba(57, 217, 138, .28);
}

/* ---------- 中屏 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-index-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .qa summary {
    padding: 1rem 1.15rem 1rem 1.3rem;
  }

  .page-faq .qa-body {
    padding: 0 1.3rem 1.15rem 1.3rem;
    font-size: .92rem;
  }

  .page-faq .faq-figure {
    margin-top: 1.4rem;
  }

  .page-faq .faq-block-lead {
    max-width: 38em;
  }
}

/* ---------- 桌面 ---------- */

@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: 254px minmax(0, 1fr);
    gap: clamp(1.8rem, 3.4vw, 3rem);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 1.25rem;
    padding: 1.2rem 1.15rem;
  }

  .page-faq .faq-index-list {
    grid-template-columns: minmax(0, 1fr);
    gap: .32rem;
  }

  .page-faq .faq-index-list a {
    border-radius: 12px;
    padding: .58rem .7rem;
    font-size: .85rem;
  }

  .page-faq .faq-block-lead {
    margin-bottom: 1.35rem;
  }

  .page-faq .qa-title {
    font-size: 1.02rem;
  }

  .page-faq .faq-prep-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 2rem;
  }

  .page-faq .faq-prep-list li:nth-last-child(2) {
    border-bottom: 0;
    padding-bottom: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa::before,
  .page-faq .qa summary,
  .page-faq .qa summary::after,
  .page-faq .faq-index-list a {
    transition: none;
  }

  .page-faq .faq-index-list a:hover,
  .page-faq .faq-index-list a:focus-visible {
    transform: none;
  }
}