/* ===== star: page-faq ===== */
.page-faq {
  --faq-card-radius: 22px;
  --faq-speed-line: repeating-linear-gradient(115deg, rgba(57, 255, 136, .5) 0 2px, transparent 2px 7px);
  --faq-deep-bg: radial-gradient(ellipse 80% 60% at 85% 10%, rgba(57, 255, 136, .07), transparent 60%),
                 radial-gradient(ellipse 70% 50% at 10% 90%, rgba(255, 159, 28, .05), transparent 60%);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 28px 0 44px;
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 260px;
  background-image: var(--faq-speed-line);
  opacity: .12;
  transform: skewY(-4deg);
  transform-origin: right top;
  pointer-events: none;
}
.page-faq .faq-hero-grid {
  position: relative;
  display: grid;
  gap: 28px;
  align-items: center;
}
.page-faq .faq-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-muted);
}
.page-faq .faq-breadcrumb a {
  color: var(--c-muted);
  text-decoration: none;
  transition: color .25s var(--ease);
}
.page-faq .faq-breadcrumb a:hover {
  color: var(--c-green);
}
.page-faq .faq-breadcrumb [aria-current="page"] {
  color: var(--c-text);
}
.page-faq .faq-hero .kicker {
  display: inline-block;
  margin-bottom: 14px;
}
.page-faq .faq-hero-title {
  margin: 0 0 16px;
  font-size: clamp(36px, 9vw, 68px);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -.03em;
  color: var(--c-text);
  transform: skewX(-5deg);
  transform-origin: left center;
  text-shadow: 0 12px 32px rgba(0, 0, 0, .35);
}
.page-faq .faq-title-accent {
  display: block;
  color: var(--c-green);
}
.page-faq .faq-hero-desc {
  margin: 0 0 24px;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(232, 237, 244, .78);
}
.page-faq .faq-topic-chips {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 2px 2px 8px;
  scrollbar-width: none;
}
.page-faq .faq-topic-chips::-webkit-scrollbar {
  display: none;
}
.page-faq .faq-chip {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  background: rgba(19, 28, 58, .66);
  border: 1px solid var(--c-line);
  color: var(--c-text);
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
  text-decoration: none;
  transition: border-color .25s var(--ease), color .25s var(--ease), transform .25s var(--ease);
}
.page-faq .faq-chip::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-green);
  opacity: .85;
}
.page-faq .faq-chip:hover {
  border-color: rgba(57, 255, 136, .55);
  color: var(--c-green);
  transform: translateY(-2px);
}
.page-faq .faq-hero-figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(42, 52, 80, .85);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
.page-faq .faq-hero-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 70%, rgba(57, 255, 136, .14));
  pointer-events: none;
}
.page-faq .faq-hero-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 10 / 6;
  object-fit: cover;
}

/* 章节节奏 */
.page-faq .faq-section {
  padding: 52px 0;
  scroll-margin-top: calc(var(--header-h) + 16px);
}
.page-faq .faq-section-wide {
  max-width: 1000px;
  margin-inline: auto;
}
.page-faq .faq-section-deep {
  background-color: var(--c-panel);
  background-image: var(--faq-deep-bg);
  background-repeat: no-repeat;
  background-position: 85% 0, 10% 100%;
  border-top: 1px solid rgba(42, 52, 80, .7);
  border-bottom: 1px solid rgba(42, 52, 80, .7);
}
.page-faq .faq-section-head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 26px;
}
.page-faq .faq-section-head .kicker {
  display: block;
  margin-bottom: 2px;
}
.page-faq .faq-section-head h2 {
  margin: 4px 0 0;
  font-size: clamp(22px, 3.6vw, 32px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--c-text);
}
.page-faq .faq-index {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 30px;
  padding: 0 14px;
  border-radius: var(--radius-pill);
  background: rgba(57, 255, 136, .1);
  border: 1px solid rgba(57, 255, 136, .3);
  color: var(--c-green);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  transform: skewX(-8deg);
}

/* 折叠面板 */
.page-faq .faq-accordion {
  display: grid;
  gap: 14px;
}
.page-faq .faq-item {
  position: relative;
  z-index: 0;
  border-radius: var(--faq-card-radius);
}
.page-faq .faq-item::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: var(--faq-card-radius);
  background: linear-gradient(180deg, rgba(19, 28, 58, .95), rgba(11, 16, 38, .85));
  border: 1px solid var(--c-line);
  transform: skewY(-1.2deg);
  transition: border-color .28s var(--ease), box-shadow .28s var(--ease), background .28s var(--ease);
}
.page-faq .faq-item::after {
  content: "";
  position: absolute;
  top: 18px;
  right: 44px;
  width: 40px;
  height: 18px;
  background-image: repeating-linear-gradient(115deg, rgba(57, 255, 136, .5) 0 2px, transparent 2px 6px);
  opacity: .28;
  pointer-events: none;
  transition: opacity .25s var(--ease);
}
.page-faq .faq-item:hover::before {
  border-color: rgba(57, 255, 136, .55);
  box-shadow: 0 16px 40px rgba(0, 0, 0, .22);
}
.page-faq .faq-item:hover::after {
  opacity: .6;
}
.page-faq .faq-item[open]::before {
  border-color: rgba(57, 255, 136, .36);
  background: linear-gradient(180deg, rgba(17, 27, 55, .97), rgba(11, 16, 38, .9));
  box-shadow: 0 22px 50px rgba(0, 0, 0, .28);
}
.page-faq .faq-item[open]::after {
  opacity: .75;
}
.page-faq .faq-q {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 18px;
  cursor: pointer;
  list-style: none;
  border-radius: var(--faq-card-radius);
}
.page-faq .faq-q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-q::marker {
  content: "";
}
.page-faq .faq-q-tag {
  flex: none;
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  background: var(--c-green);
  color: #061024;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
}
.page-faq .faq-q-tag--warm {
  background: var(--c-orange);
}
.page-faq .faq-q-text {
  flex: 1;
  color: var(--c-text);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: .01em;
}
.page-faq .faq-q-icon {
  flex: none;
  position: relative;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(57, 255, 136, .08);
  border: 1px solid rgba(57, 255, 136, .35);
  transition: background .25s var(--ease), transform .3s var(--ease);
}
.page-faq .faq-q-icon::before,
.page-faq .faq-q-icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 9px;
  height: 2px;
  border-radius: 2px;
  background: var(--c-green);
  transform: translate(-50%, -50%);
}
.page-faq .faq-q-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}
.page-faq .faq-item[open] .faq-q-icon {
  background: rgba(57, 255, 136, .22);
  transform: rotate(180deg);
}
.page-faq .faq-item[open] .faq-q-icon::after {
  transform: translate(-50%, -50%) rotate(0deg);
}
.page-faq .faq-answer {
  padding: 2px 18px 22px;
  color: rgba(232, 237, 244, .82);
  font-size: 15px;
  line-height: 1.75;
}
.page-faq .faq-answer p {
  margin: 0 0 10px;
}
.page-faq .faq-answer p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-answer a {
  color: var(--c-green);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-faq .faq-answer a:hover {
  color: var(--c-orange);
}
.page-faq .faq-item[open] .faq-answer {
  border-top: 1px dashed rgba(42, 52, 80, .85);
  padding-top: 14px;
  animation: faq-answer-in .32s var(--ease);
}
@keyframes faq-answer-in {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 双栏布局 */
.page-faq .faq-split {
  display: grid;
  gap: 28px;
  align-items: start;
}

/* 侧栏数据卡 */
.page-faq .faq-side-card {
  position: relative;
  overflow: hidden;
  padding: 18px;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(19, 28, 58, .8), rgba(11, 16, 38, .9));
  border: 1px solid var(--c-line);
}
.page-faq .faq-side-card::before {
  content: "";
  position: absolute;
  right: -20px;
  top: -20px;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(57, 255, 136, .1), transparent 70%);
  pointer-events: none;
}
.page-faq .faq-side-figure {
  position: relative;
  margin: 0 0 16px;
  overflow: hidden;
  border: 1px solid rgba(42, 52, 80, .7);
  border-radius: 16px;
}
.page-faq .faq-side-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}
.page-faq .faq-stat-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.page-faq .faq-stat-cell {
  padding: 13px 12px;
  border-radius: 14px;
  background: rgba(11, 16, 38, .55);
  border: 1px solid rgba(42, 52, 80, .6);
  transition: border-color .25s var(--ease), transform .25s var(--ease);
}
.page-faq .faq-stat-cell:hover {
  border-color: rgba(57, 255, 136, .45);
  transform: translateY(-2px);
}
.page-faq .faq-stat-cell .data-stat {
  display: block;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--c-green);
}
.page-faq .faq-stat-cell .data-label {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.4;
  color: var(--c-muted);
  letter-spacing: .03em;
}
.page-faq .faq-side-note {
  margin: 16px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--c-green);
  font-size: 13px;
  line-height: 1.65;
  color: rgba(160, 170, 191, .9);
}

/* 设备支持 */
.page-faq .faq-device-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}
.page-faq .faq-device-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  background: rgba(19, 28, 58, .55);
  border: 1px solid rgba(42, 52, 80, .75);
  color: var(--c-text);
  font-size: 13px;
  font-weight: 600;
  transition: border-color .25s var(--ease);
}
.page-faq .faq-device-pill:hover {
  border-color: rgba(57, 255, 136, .45);
}
.page-faq .faq-device-pill::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-green);
  box-shadow: 0 0 0 3px rgba(57, 255, 136, .12);
}

/* 安全侧栏 */
.page-faq .faq-side-card--safety h3 {
  margin: 6px 0 14px;
  font-size: 18px;
  font-weight: 800;
  color: var(--c-text);
}
.page-faq .faq-safety-list {
  display: grid;
  gap: 12px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-safety-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  line-height: 1.55;
  color: rgba(232, 237, 244, .82);
}
.page-faq .faq-safety-marker {
  flex: none;
  width: 8px;
  height: 8px;
  margin-top: 6px;
  border-radius: 2px;
  background: var(--c-orange);
  transform: skewX(-18deg);
}
.page-faq .faq-side-link {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed rgba(42, 52, 80, .8);
}
.page-faq .faq-side-link a {
  color: var(--c-green);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: color .25s var(--ease);
}
.page-faq .faq-side-link a:hover {
  color: var(--c-orange);
  text-decoration: underline;
}

/* 底部联系引导 */
.page-faq .faq-contact-cta {
  padding: 0 0 72px;
}
.page-faq .faq-cta-panel {
  position: relative;
  overflow: hidden;
  padding: 34px 24px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(57, 255, 136, .1), rgba(255, 159, 28, .06) 60%, rgba(19, 28, 58, .5));
  border: 1px solid rgba(57, 255, 136, .22);
}
.page-faq .faq-cta-panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 6px;
  background: linear-gradient(180deg, var(--c-green) 0 55%, var(--c-orange) 55% 100%);
}
.page-faq .faq-cta-panel::after {
  content: "";
  position: absolute;
  right: -40px;
  bottom: -40px;
  width: 170px;
  height: 170px;
  background-image: repeating-linear-gradient(115deg, rgba(57, 255, 136, .14) 0 2px, transparent 2px 10px);
  opacity: .45;
  transform: rotate(-8deg);
  pointer-events: none;
}
.page-faq .faq-cta-panel h2 {
  position: relative;
  z-index: 1;
  margin: 0 0 10px;
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 800;
  line-height: 1.2;
  color: var(--c-text);
}
.page-faq .faq-cta-panel p {
  position: relative;
  z-index: 1;
  max-width: 44em;
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(232, 237, 244, .78);
}
.page-faq .faq-cta-actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-faq .faq-cta-mail {
  position: relative;
  z-index: 1;
  margin: 18px 0 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-muted);
}

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

@media (min-width: 860px) {
  .page-faq .faq-hero {
    padding: 48px 0 64px;
  }
  .page-faq .faq-hero-grid {
    grid-template-columns: 1.08fr .92fr;
    gap: 48px;
  }
  .page-faq .faq-topic-chips {
    flex-wrap: wrap;
    overflow-x: visible;
  }
  .page-faq .faq-hero-desc {
    font-size: 16px;
  }
  .page-faq .faq-section {
    padding: 72px 0;
  }
  .page-faq .faq-split {
    grid-template-columns: 1.35fr .85fr;
    gap: 32px;
  }
  .page-faq .faq-split--rev {
    grid-template-columns: .85fr 1.35fr;
  }
  .page-faq .faq-split--rev .faq-split-main {
    order: 2;
  }
  .page-faq .faq-split--rev .faq-split-side {
    order: 1;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-q-text {
    font-size: 17px;
  }
  .page-faq .faq-q {
    padding: 22px 24px;
  }
  .page-faq .faq-answer {
    padding-left: 24px;
    padding-right: 24px;
  }
  .page-faq .faq-cta-panel {
    padding: 46px 48px;
  }
}