/* ===== 页面专属：帮助中心 (page-faq) ===== */
.page-faq {
  --faq-green-tint: rgba(26, 122, 46, 0.10);
  --faq-green-border: rgba(26, 122, 46, 0.25);
  --faq-blue-icon: #3a86ff;
  --faq-card-bg: rgba(20, 30, 20, 0.70);
  --faq-banner-overlay: linear-gradient(135deg, rgba(10, 15, 10, 0.72) 0%, rgba(10, 15, 10, 0.24) 60%, transparent 100%);
  --faq-radius: 20px;
  --faq-radius-sm: 12px;
  --faq-gap: 16px;

  background-color: var(--color-bg, #0a0f0a);
  color: var(--color-text-primary, #e0e0e0);
  font-family: var(--font-body, 'Noto Serif SC', Georgia, serif);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ----- Banner ----- */
.faq-banner {
  position: relative;
  width: 100%;
  height: 220px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.faq-banner__img-wrapper {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.faq-banner__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  display: block;
}

.faq-banner__overlay {
  position: absolute;
  inset: 0;
  background: var(--faq-banner-overlay);
  pointer-events: none;
}

.faq-banner__content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 20px;
  max-width: var(--content-max-width, 1200px);
}

.faq-banner__title {
  font-family: var(--font-heading, 'Bebas Neue', Impact, 'Arial Black', sans-serif);
  font-size: clamp(2.2rem, 6.4vw, 4.2rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #ffffff;
  margin: 0 0 6px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.5);
}

.faq-banner__tagline {
  font-family: var(--font-body, 'Noto Serif SC', Georgia, serif);
  font-size: clamp(0.95rem, 2vw, 1.25rem);
  color: var(--color-accent-silver, #c0c0c0);
  margin: 0;
  text-shadow: 0 1px 8px rgba(0,0,0,0.4);
}

/* ----- Breadcrumb ----- */
.faq-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 18px 20px 8px;
  max-width: var(--content-max-width, 1200px);
  margin: 0 auto;
  font-size: 0.85rem;
  color: var(--color-text-secondary, #a0a0a0);
}

.faq-breadcrumb__link {
  color: var(--color-primary, #1a7a2e);
  text-decoration: none;
  transition: color var(--transition-fast, 0.2s);
}

.faq-breadcrumb__link:hover,
.faq-breadcrumb__link:focus-visible {
  color: var(--color-highlight, #2d8f4e);
  text-decoration: underline;
}

.faq-breadcrumb__sep {
  color: var(--color-text-secondary, #a0a0a0);
  font-size: 0.75rem;
}

.faq-breadcrumb__current {
  color: var(--color-accent-silver, #c0c0c0);
  font-weight: 600;
}

/* ----- Tags ----- */
.faq-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 12px 20px 20px;
  max-width: var(--content-max-width, 1200px);
  margin: 0 auto;
}

.faq-topics .tag {
  display: inline-block;
  padding: 6px 18px;
  font-family: var(--font-heading, 'Bebas Neue', Impact, 'Arial Black', sans-serif);
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  background: var(--color-surface, #141e14);
  color: var(--color-text-secondary, #a0a0a0);
  border: 1px solid var(--faq-green-border);
  border-radius: 100px;
  transition: background var(--transition-fast, 0.2s), color var(--transition-fast, 0.2s), border-color var(--transition-fast, 0.2s);
}

.faq-topics .tag:hover {
  background: rgba(26, 122, 46, 0.18);
  color: var(--color-text-primary, #e0e0e0);
  border-color: var(--color-primary, #1a7a2e);
}

/* ----- Accordion ----- */
.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: var(--faq-gap);
  padding: 0 20px 32px;
  max-width: 820px;
  margin: 0 auto;
}

/* ----- Item ----- */
.faq-item {
  background: var(--color-surface, #141e14);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--faq-radius-sm, 12px);
  overflow: hidden;
  transition: border-color var(--transition-slow, 0.4s), box-shadow var(--transition-slow, 0.4s);
}

.faq-item[open] {
  border-color: var(--faq-green-border);
  box-shadow: 0 4px 28px rgba(26, 122, 46, 0.08);
}

.faq-item--contact {
  --faq-item-contact-glow: rgba(58, 134, 255, 0.06);
  background: var(--faq-card-bg);
  border-color: rgba(58, 134, 255, 0.15);
}

.faq-item--contact[open] {
  border-color: rgba(58, 134, 255, 0.30);
  box-shadow: 0 4px 32px rgba(58, 134, 255, 0.10);
}

/* ----- Question (summary) ----- */
.faq-question {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background var(--transition-fast, 0.2s);
  font-family: var(--font-heading, 'Bebas Neue', Impact, 'Arial Black', sans-serif);
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-text-primary, #e0e0e0);
  border-radius: var(--faq-radius-sm, 12px) var(--faq-radius-sm, 12px) 0 0;
}

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

.faq-question::-moz-list-bullet {
  list-style: none;
}

.faq-question:hover,
.faq-question:focus-visible {
  background: rgba(255,255,255,0.03);
}

.faq-item[open] .faq-question {
  background: rgba(26, 122, 46, 0.06);
  border-bottom: 1px solid var(--faq-green-border);
}

.faq-item--contact[open] .faq-question {
  background: rgba(58, 134, 255, 0.06);
  border-bottom-color: rgba(58, 134, 255, 0.20);
}

/* Icon (blue circle) */
.faq-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--faq-blue-icon);
  background: rgba(58, 134, 255, 0.08);
  border-radius: 50%;
  transition: background var(--transition-fast, 0.2s), color var(--transition-fast, 0.2s);
}

.faq-icon svg {
  width: 20px;
  height: 20px;
}

.faq-item[open] .faq-icon {
  background: rgba(58, 134, 255, 0.16);
}

.faq-item--contact .faq-icon {
  color: var(--color-accent-red, #e63946);
  background: rgba(230, 57, 70, 0.08);
}

.faq-item--contact[open] .faq-icon {
  background: rgba(230, 57, 70, 0.16);
}

/* Question text */
.faq-question__text {
  flex: 1;
  line-height: 1.3;
}

/* Arrow indicator */
.faq-arrow {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary, #a0a0a0);
  transition: transform var(--transition-slow, 0.4s) ease, color var(--transition-fast, 0.2s);
}

.faq-item[open] .faq-arrow {
  transform: rotate(180deg);
  color: var(--color-primary, #1a7a2e);
}

.faq-item--contact[open] .faq-arrow {
  color: var(--faq-blue-icon);
}

/* ----- Answer ----- */
.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--transition-slow, 0.4s) ease;
  background: var(--faq-green-tint);
}

.faq-item[open] .faq-answer {
  grid-template-rows: 1fr;
}

.faq-answer__inner {
  overflow: hidden;
  padding: 0 20px 0 70px;
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity 0.35s ease, transform 0.35s ease, padding 0.3s ease;
}

.faq-item[open] .faq-answer__inner {
  opacity: 1;
  transform: translateY(0);
  padding: 18px 20px 24px 70px;
}

/* Answer text */
.faq-answer__inner p {
  margin: 0 0 14px;
  font-family: var(--font-body, 'Noto Serif SC', Georgia, serif);
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text-secondary, #a0a0a0);
}

.faq-answer__inner p:last-child {
  margin-bottom: 0;
}

/* Tip / note */
.faq-answer__tip {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 10px 14px;
  background: rgba(58, 134, 255, 0.06);
  border-left: 3px solid var(--faq-blue-icon);
  border-radius: 0 var(--faq-radius-sm, 12px) var(--faq-radius-sm, 12px) 0;
  font-family: var(--font-body, 'Noto Serif SC', Georgia, serif);
  font-size: 0.88rem;
  color: var(--color-text-secondary, #a0a0a0);
}

.faq-answer__note {
  margin-top: 14px;
  padding: 10px 14px;
  background: rgba(192, 192, 192, 0.04);
  border-radius: var(--faq-radius-sm, 12px);
  font-size: 0.82rem !important;
  color: var(--color-text-secondary, #a0a0a0) !important;
  border: 1px solid rgba(192, 192, 192, 0.08);
}

/* Stat note */
.faq-stat-note {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 6px;
  padding: 10px 14px;
  background: rgba(26, 122, 46, 0.06);
  border-radius: var(--faq-radius-sm, 12px);
  font-size: 0.85rem;
  color: var(--color-text-secondary, #a0a0a0);
}

.faq-stat-note__dot {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary, #1a7a2e);
  opacity: 0.6;
}

/* ----- Screenshot ----- */
.faq-screenshot {
  display: block;
  width: 100%;
  max-width: 340px;
  height: auto;
  border-radius: var(--faq-radius-sm, 12px);
  margin: 12px 0 14px;
  border: 1px solid rgba(255,255,255,0.06);
  box-shadow: 0 6px 24px rgba(0,0,0,0.25);
}

/* ----- Button inside answer ----- */
.faq-answer__inner .btn {
  margin-top: 8px;
}

/* ----- Contact Card ----- */
.contact-card {
  background: linear-gradient(135deg, rgba(10, 15, 10, 0.80) 0%, rgba(20, 30, 20, 0.80) 100%);
  border: 1px solid rgba(58, 134, 255, 0.18);
  border-radius: var(--faq-radius, 20px);
  padding: 20px 18px;
  margin-bottom: 10px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.20);
}

.contact-card__header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.contact-card__icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(58, 134, 255, 0.08);
  border-radius: 50%;
  color: var(--faq-blue-icon);
}

.contact-card__icon svg {
  width: 28px;
  height: 28px;
}

.contact-card__title {
  font-family: var(--font-heading, 'Bebas Neue', Impact, 'Arial Black', sans-serif);
  font-size: 1.15rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--color-text-primary, #e0e0e0);
}

.contact-card__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 0;
  padding: 0;
}

.contact-card__row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
  padding: 6px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.contact-card__row:last-child {
  border-bottom: none;
}

.contact-card__row dt {
  flex: 0 0 80px;
  font-family: var(--font-heading, 'Bebas Neue', Impact, 'Arial Black', sans-serif);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-accent-silver, #c0c0c0);
  opacity: 0.7;
}

.contact-card__row dd {
  flex: 1;
  margin: 0;
  font-family: var(--font-body, 'Noto Serif SC', Georgia, serif);
  font-size: 0.92rem;
  color: var(--color-text-primary, #e0e0e0);
  word-break: break-word;
}

.contact-card__action {
  margin-top: 18px;
  display: flex;
  justify-content: flex-end;
}

/* ----- More Help Section ----- */
.faq-more-help {
  padding: 40px 20px 56px;
  background: var(--color-surface, #141e14);
  margin-top: 12px;
  border-top: 1px solid rgba(255,255,255,0.04);
}

.faq-more-help__inner {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.faq-more-help__title {
  font-family: var(--font-heading, 'Bebas Neue', Impact, 'Arial Black', sans-serif);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--color-text-primary, #e0e0e0);
  margin: 0 0 10px;
}

.faq-more-help__text {
  font-family: var(--font-body, 'Noto Serif SC', Georgia, serif);
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text-secondary, #a0a0a0);
  margin: 0 0 24px;
}

.faq-more-help__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

.faq-more-help__actions .btn--ghost {
  color: var(--color-text-secondary, #a0a0a0);
  border-color: rgba(255,255,255,0.10);
}

.faq-more-help__actions .btn--ghost:hover {
  color: var(--color-text-primary, #e0e0e0);
  border-color: var(--color-text-secondary, #a0a0a0);
}

/* ===== Responsive (Mobile-first) ===== */

/* Tablet & up */
@media (min-width: 640px) {
  .faq-banner {
    height: 280px;
  }

  .faq-banner__content {
    text-align: left;
    padding: 0 32px;
    align-self: flex-end;
    padding-bottom: 28px;
  }

  .faq-banner__title {
    font-size: clamp(2.6rem, 5vw, 3.8rem);
  }

  .faq-breadcrumb {
    padding: 22px 32px 10px;
  }

  .faq-topics {
    padding: 14px 32px 24px;
  }

  .faq-accordion {
    padding: 0 32px 40px;
    gap: 18px;
  }

  .faq-question {
    padding: 20px 28px;
    font-size: 1.1rem;
    gap: 16px;
  }

  .faq-item[open] .faq-answer__inner {
    padding: 22px 28px 28px 80px;
  }

  .faq-answer__inner p {
    font-size: 0.98rem;
  }

  .faq-screenshot {
    max-width: 280px;
    margin: 14px 0 16px;
  }

  .contact-card {
    padding: 26px 28px;
  }

  .contact-card__row dt {
    flex-basis: 90px;
  }

  .faq-more-help {
    padding: 48px 32px 64px;
  }
}

/* Desktop */
@media (min-width: 1024px) {
  .faq-banner {
    height: 320px;
  }

  .faq-banner__content {
    padding-left: calc(var(--header-width, 240px) + 40px);
    padding-bottom: 32px;
  }

  .faq-banner__title {
    font-size: 4rem;
  }

  .faq-breadcrumb {
    padding-left: calc(var(--header-width, 240px) + 40px);
    padding-right: 40px;
  }

  .faq-topics {
    padding-left: calc(var(--header-width, 240px) + 40px);
    padding-right: 40px;
  }

  .faq-accordion {
    padding-left: calc(var(--header-width, 240px) + 40px);
    padding-right: 40px;
    max-width: 900px;
  }

  .faq-question {
    padding: 22px 32px;
    font-size: 1.15rem;
  }

  .faq-item[open] .faq-answer__inner {
    padding: 26px 32px 32px 88px;
  }

  .faq-screenshot {
    max-width: 300px;
  }

  .contact-card {
    padding: 30px 36px;
  }

  .faq-more-help {
    padding-left: calc(var(--header-width, 240px) + 40px);
    padding-right: 40px;
  }
}

/* Wide desktop */
@media (min-width: 1440px) {
  .faq-banner__content {
    max-width: var(--content-max-width, 1200px);
    margin: 0 auto;
  }

  .faq-accordion {
    max-width: 860px;
  }
}

/* ===== Shared class overrides within page scope ===== */
.page-faq .btn--primary {
  background: var(--color-primary, #1a7a2e);
  color: #ffffff;
  border: 2px solid var(--color-primary, #1a7a2e);
  padding: 10px 28px;
  font-family: var(--font-heading, 'Bebas Neue', Impact, 'Arial Black', sans-serif);
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: 100px;
  cursor: pointer;
  transition: background var(--transition-fast, 0.2s), border-color var(--transition-fast, 0.2s), transform var(--transition-fast, 0.2s);
  display: inline-block;
  text-decoration: none;
  line-height: 1.4;
}

.page-faq .btn--primary:hover {
  background: var(--color-highlight, #2d8f4e);
  border-color: var(--color-highlight, #2d8f4e);
  transform: translateY(-1px);
}

.page-faq .btn--outline {
  background: transparent;
  color: var(--color-primary, #1a7a2e);
  border: 2px solid var(--color-primary, #1a7a2e);
  padding: 10px 28px;
  font-family: var(--font-heading, 'Bebas Neue', Impact, 'Arial Black', sans-serif);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: 100px;
  cursor: pointer;
  transition: background var(--transition-fast, 0.2s), color var(--transition-fast, 0.2s), transform var(--transition-fast, 0.2s);
  display: inline-block;
  text-decoration: none;
  line-height: 1.4;
}

.page-faq .btn--outline:hover {
  background: rgba(26, 122, 46, 0.08);
  color: var(--color-highlight, #2d8f4e);
  transform: translateY(-1px);
}

.page-faq .btn--ghost {
  background: transparent;
  color: var(--color-text-secondary, #a0a0a0);
  border: 2px solid rgba(255,255,255,0.10);
  padding: 10px 28px;
  font-family: var(--font-heading, 'Bebas Neue', Impact, 'Arial Black', sans-serif);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: 100px;
  cursor: pointer;
  transition: background var(--transition-fast, 0.2s), color var(--transition-fast, 0.2s), border-color var(--transition-fast, 0.2s);
  display: inline-block;
  text-decoration: none;
  line-height: 1.4;
}

.page-faq .btn--ghost:hover {
  background: rgba(255,255,255,0.03);
  color: var(--color-text-primary, #e0e0e0);
  border-color: var(--color-text-secondary, #a0a0a0);
}

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
  .faq-answer,
  .faq-answer__inner,
  .faq-arrow,
  .faq-item,
  .faq-question,
  .btn {
    transition: none !important;
    transform: none !important;
    animation: none !important;
  }

  .faq-item[open] .faq-answer__inner {
    opacity: 1;
    transform: none;
  }
}