/* ===== 知识中心 / page-faq ===== */
.page-faq {
  --faq-gap: clamp(26px, 5vw, 58px);
  --faq-paper-muted: #6B8078;
  background: var(--pitch);
  color: var(--mist);
  font-family: var(--font-body);
  padding-bottom: clamp(48px, 8vw, 88px);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 34px 0 clamp(38px, 6vw, 58px);
  background:
    radial-gradient(120% 92% at 88% -12%, rgba(201, 255, 63, 0.14), transparent 62%),
    linear-gradient(180deg, var(--stand) 0%, var(--pitch) 100%);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(30, 58, 46, 0.55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30, 58, 46, 0.42) 1px, transparent 1px);
  background-size: 68px 68px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.65), transparent 78%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.65), transparent 78%);
  pointer-events: none;
}

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

.page-faq .hero-grid {
  display: grid;
  gap: 26px;
  margin-top: 20px;
}

.page-faq .hero-copy .kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--lime);
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(1.9rem, 8.4vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--white);
  max-width: 20ch;
}

.page-faq .faq-hero h1::after {
  content: "";
  display: block;
  width: 66px;
  height: 4px;
  margin-top: 18px;
  background: var(--lime);
  transform: skewX(-18deg);
}

.page-faq .hero-lead {
  margin: 20px 0 0;
  max-width: 44ch;
  font-size: var(--step0);
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .hero-meter {
  position: relative;
  padding: 22px 22px 20px;
  background: linear-gradient(152deg, var(--panel) 0%, #08140F 100%);
  border-top: 2px solid var(--lime);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
  animation: faq-breath 4s var(--ease) infinite;
}

@keyframes faq-breath {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.9; }
}

.page-faq .meter-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--data);
}

.page-faq .meter-value {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: clamp(3.4rem, 15vw, 5.2rem);
  line-height: 0.86;
  letter-spacing: -0.03em;
  color: var(--white);
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .meter-unit {
  font-family: var(--font-body);
  font-size: var(--step-1);
  font-weight: 500;
  letter-spacing: 0;
  color: var(--lime);
}

.page-faq .meter-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 14px 0 0;
  border-top: 1px dashed var(--line);
  display: grid;
  gap: 9px;
  font-size: var(--step-1);
  line-height: 1.6;
}

.page-faq .meter-list li {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-faq .meter-list span {
  flex: none;
  min-width: 30px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--lime);
}

/* ---------- 主体 ---------- */
.page-faq .faq-body {
  padding-top: var(--faq-gap);
}

.page-faq .tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 4px 0 18px;
  margin-bottom: clamp(24px, 4vw, 36px);
  border-bottom: 1px solid var(--line);
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-faq .tabs::-webkit-scrollbar {
  display: none;
}

.page-faq .tab {
  flex: 0 0 auto;
  appearance: none;
  padding: 11px 17px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  cursor: pointer;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .tab:hover {
  border-color: var(--lime);
  color: var(--white);
}

.page-faq .tab[aria-selected="true"] {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
}

.page-faq .tab:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

.page-faq .panel-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 16px;
  align-items: baseline;
  margin-bottom: clamp(20px, 3.5vw, 30px);
}

.page-faq .panel-index {
  grid-row: span 2;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.3rem, 10vw, 3.4rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--line);
}

.page-faq .panel-head h2 {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(1.32rem, 5.4vw, 1.9rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .panel-lead {
  grid-column: 2;
  margin: 0;
  max-width: 54ch;
  font-size: var(--step-1);
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .qa-layout {
  display: grid;
  gap: 30px;
}

/* 问答列表 */
.page-faq .qa-list {
  border-top: 1px solid var(--line-soft);
}

.page-faq .qa {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .qa-q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0 14px;
  align-items: start;
  padding: 20px 2px 20px 0;
  cursor: pointer;
  list-style: none;
  color: var(--white);
  font-weight: 700;
  font-size: clamp(1.05rem, 4.4vw, 1.1875rem);
  line-height: 1.5;
  transition: color 0.2s var(--ease);
}

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

.page-faq .qa-q:hover {
  color: var(--lime);
}

.page-faq .qa-q:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

.page-faq .qa-num {
  padding-top: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.14em;
  color: var(--lime);
}

.page-faq .qa-mark {
  position: relative;
  width: 22px;
  height: 22px;
  margin-top: 3px;
  background: rgba(201, 255, 63, 0.14);
  clip-path: polygon(7px 0, 100% 0, 100% calc(100% - 7px), calc(100% - 7px) 100%, 0 100%, 0 7px);
  transition: background 0.2s var(--ease);
}

.page-faq .qa-mark::before,
.page-faq .qa-mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--lime);
  transform: translate(-50%, -50%);
}

.page-faq .qa-mark::before {
  width: 10px;
  height: 2px;
}

.page-faq .qa-mark::after {
  width: 2px;
  height: 10px;
  transform: translate(-50%, -50%) scaleY(1);
  transition: transform 0.25s var(--ease);
}

.page-faq .qa[open] .qa-mark {
  background: rgba(201, 255, 63, 0.32);
}

.page-faq .qa[open] .qa-mark::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-faq .qa-a {
  padding: 0 0 22px;
}

.page-faq .qa-a-inner {
  max-width: 66ch;
  padding: 16px 18px;
  background: rgba(19, 39, 30, 0.72);
  border-left: 2px solid var(--lime);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}

.page-faq .qa-a-inner p {
  margin: 0;
  font-size: var(--step-1);
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .mail {
  color: var(--data);
  word-break: break-all;
  user-select: all;
}

/* 配图 */
.page-faq .qa-figure {
  margin: 0;
}

.page-faq .qa-figure .media {
  overflow: hidden;
  background: var(--panel);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

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

.page-faq .media-caption {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.7;
  color: var(--mist);
}

/* 纸白打断块 */
.page-faq .faq-note {
  margin-top: clamp(28px, 5vw, 44px);
  padding: 22px;
  background: var(--paper);
  color: var(--ink);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-faq .faq-note .note-label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--line);
}

.page-faq .faq-note .note-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 11px;
  counter-reset: faq-note;
}

.page-faq .faq-note .note-steps li {
  position: relative;
  padding-left: 34px;
  counter-increment: faq-note;
  font-size: var(--step-1);
  line-height: 1.7;
  color: var(--ink);
}

.page-faq .faq-note .note-steps li::before {
  content: counter(faq-note, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--faq-paper-muted);
}

/* ---------- 延伸阅读 ---------- */
.page-faq .faq-next {
  padding-top: clamp(34px, 6vw, 60px);
}

.page-faq .next-head {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--lime);
}

.page-faq .next-grid {
  display: grid;
  gap: 12px;
}

.page-faq .next-card {
  display: block;
  padding: 20px 20px 22px;
  background: var(--stand);
  border: 1px solid var(--line);
  text-decoration: none;
  color: var(--mist);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-faq .next-card:hover {
  background: var(--panel);
  border-color: var(--lime);
  transform: translateY(-3px);
}

.page-faq .next-card:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

.page-faq .next-key {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--step0);
  color: var(--white);
}

.page-faq .next-text {
  display: block;
  font-size: var(--step-1);
  line-height: 1.7;
}

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

  .page-faq .faq-note {
    padding: 26px 28px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding-top: 44px;
  }

  .page-faq .hero-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.7fr);
    gap: 48px;
    align-items: end;
  }
}

@media (min-width: 960px) {
  .page-faq .qa-layout {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.85fr);
    gap: 44px;
    align-items: start;
  }

  .page-faq .qa-q {
    padding: 24px 4px 24px 0;
  }
}

@media (max-width: 420px) {
  .page-faq .qa-q {
    gap: 0 10px;
    font-size: 1rem;
  }

  .page-faq .qa-num {
    font-size: 11px;
    letter-spacing: 0.1em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .hero-meter {
    animation: none;
  }

  .page-faq .qa-mark::after,
  .page-faq .next-card,
  .page-faq .tab {
    transition: none;
  }

  .page-faq .next-card:hover {
    transform: none;
  }
}
<<<END>>>