.page-faq {
  background-color: var(--color-bg);
  color: var(--color-text);
}

.page-faq *,
.page-faq *::before,
.page-faq *::after {
  box-sizing: border-box;
}

.page-faq img {
  max-width: 100%;
  height: auto;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 40px 0 28px;
  background:
    linear-gradient(135deg, rgba(0, 216, 255, 0.10) 0%, transparent 46%),
    linear-gradient(315deg, rgba(255, 92, 56, 0.06) 0%, transparent 38%);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 24px;
  align-items: center;
  margin-top: 24px;
}

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

.page-faq .faq-hero h1 {
  font-family: var(--font-headline);
  font-size: clamp(1.9rem, 5.2vw, 3.2rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  margin: 10px 0 16px;
}

.page-faq .faq-hero__lead {
  color: var(--color-text-dim);
  font-size: 1rem;
  line-height: 1.75;
  max-width: 54ch;
}

.page-faq .faq-hero__figure {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-cut);
  clip-path: polygon(0 0, 100% 8%, 100% 86%, 0 100%);
  box-shadow: 0 20px 44px rgba(0, 0, 0, 0.32);
}

@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding-top: 56px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: 0.95fr 1.05fr;
    gap: 44px;
    margin-top: 32px;
  }
}

/* ---------- 通用小节标题 ---------- */
.page-faq .section-head {
  margin-bottom: 28px;
}

.page-faq .section-head h2 {
  font-family: var(--font-headline);
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  letter-spacing: -0.01em;
  margin: 8px 0 0;
  text-transform: uppercase;
}

/* ---------- 热门问题快速入口 ---------- */
.page-faq .faq-hot {
  padding: 40px 0;
}

.page-faq .faq-hot__grid {
  display: grid;
  gap: 14px;
  margin-top: 8px;
}

.page-faq .faq-hot__card {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
  padding: 18px 20px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-blue);
  border-radius: var(--radius-cut);
  text-decoration: none;
  color: var(--color-text);
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease), transform 0.2s var(--ease);
}

.page-faq .faq-hot__card:nth-child(2) {
  border-left-color: var(--color-green);
}

.page-faq .faq-hot__card:nth-child(3) {
  border-left-color: var(--color-orange);
}

.page-faq .faq-hot__card:nth-child(4) {
  border-left-color: var(--color-amber);
}

.page-faq .faq-hot__card:hover {
  background: rgba(0, 216, 255, 0.08);
  border-left-color: var(--color-blue);
  transform: translateY(-2px);
}

.page-faq .faq-hot__num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-blue);
  flex-shrink: 0;
}

.page-faq .faq-hot__text {
  flex: 1 1 auto;
  font-weight: 500;
  line-height: 1.45;
  min-width: 0;
}

.page-faq .faq-hot__arrow {
  font-family: var(--font-mono);
  color: var(--color-orange);
  flex-shrink: 0;
  transition: transform 0.3s var(--ease);
}

.page-faq .faq-hot__card:hover .faq-hot__arrow {
  transform: translateX(4px);
}

@media (min-width: 768px) {
  .page-faq .faq-hot__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hot__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ---------- 分类问答面板 ---------- */
.page-faq .faq-band-nav {
  position: sticky;
  top: var(--header-height);
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px max(24px, calc((100vw - var(--container-w)) / 2));
  background: rgba(10, 14, 23, 0.92);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  overflow-x: auto;
  scrollbar-width: none;
  white-space: nowrap;
}

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

.page-faq .faq-band-nav__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  margin-right: 8px;
}

.page-faq .faq-band-nav a {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-decoration: none;
  color: var(--color-text-dim);
  padding: 7px 14px;
  border: 1px solid transparent;
  border-radius: 999px;
  transition: color 0.3s var(--ease), background 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-faq .faq-band-nav a:hover {
  color: var(--color-bg);
  background: var(--color-blue);
  border-color: var(--color-blue);
}

/* ---------- 横向色带 ---------- */
.page-faq .faq-band {
  position: relative;
  padding: 44px 0 48px;
  border-top: 1px solid var(--color-border);
  scroll-margin-top: calc(var(--header-height) + 64px);
}

.page-faq .faq-band::before {
  content: "";
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--band-accent);
  opacity: 0.72;
}

.page-faq .faq-band::after {
  content: "";
  position: absolute;
  top: 56px;
  right: -40px;
  width: 180px;
  height: 180px;
  background: var(--band-accent);
  opacity: 0.04;
  transform: rotate(14deg);
  clip-path: polygon(25% 0, 100% 0, 78% 100%, 0 100%);
  pointer-events: none;
}

.page-faq .faq-band--schedule {
  --band-accent: var(--color-blue);
  background: linear-gradient(120deg, rgba(0, 216, 255, 0.07) 0%, transparent 42%);
}

.page-faq .faq-band--subscribe {
  --band-accent: var(--color-green);
  background: linear-gradient(120deg, rgba(0, 255, 136, 0.06) 0%, transparent 42%);
}

.page-faq .faq-band--pc {
  --band-accent: var(--color-orange);
  background: linear-gradient(120deg, rgba(255, 92, 56, 0.06) 0%, transparent 42%);
}

.page-faq .faq-band--data {
  --band-accent: var(--color-amber);
  background: linear-gradient(120deg, rgba(255, 176, 0, 0.06) 0%, transparent 42%);
}

@media (min-width: 768px) {
  .page-faq .faq-band {
    padding: 56px 0 60px;
  }
}

/* ---------- 色带头部 ---------- */
.page-faq .faq-band__head {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 16px;
  align-items: start;
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
}

.page-faq .faq-band__index {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-bg);
  background: var(--band-accent);
  border-radius: var(--radius-cut) 0 var(--radius-cut) 0;
  clip-path: polygon(0 0, 100% 0, 100% 78%, 78% 100%, 0 100%);
}

.page-faq .faq-band__title-block {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px 16px;
  min-width: 0;
}

.page-faq .faq-band__title-text {
  flex: 1 1 160px;
  min-width: 0;
}

.page-faq .faq-band__title-block h3 {
  font-family: var(--font-headline);
  font-size: clamp(1.35rem, 2.6vw, 1.8rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
}

.page-faq .faq-band__title-block p {
  color: var(--color-text-dim);
  font-size: 0.95rem;
  line-height: 1.65;
  margin: 0;
}

.page-faq .faq-band__icon {
  width: 80px;
  height: auto;
  border-radius: var(--radius-cut);
  flex-shrink: 0;
}

@media (min-width: 768px) {
  .page-faq .faq-band__head {
    grid-template-columns: 64px 1fr;
    gap: 20px;
  }
}

/* ---------- 手风琴列表 ---------- */
.page-faq .faq-band__list {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 14px;
}

@media (min-width: 880px) {
  .page-faq .faq-band__list {
    grid-template-columns: repeat(2, 1fr);
    align-items: start;
  }
}

/* ---------- 手风琴项 ---------- */
.page-faq .faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--band-accent);
  border-radius: var(--radius-cut);
  transition: background 0.35s var(--ease), border-color 0.35s var(--ease);
  scroll-margin-top: calc(var(--header-height) + 80px);
  min-width: 0;
}

.page-faq .faq-item[open] {
  background: #151C2A;
  border-color: var(--band-accent);
}

.page-faq .faq-item summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  min-height: 56px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-text);
  transition: color 0.3s var(--ease);
}

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

.page-faq .faq-item summary:hover {
  color: var(--color-blue);
}

.page-faq .faq-item summary::after {
  content: "+";
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  line-height: 1;
  color: var(--band-accent);
  transition: transform 0.3s var(--ease);
}

.page-faq .faq-item[open] summary::after {
  content: "−";
  transform: rotate(180deg);
}

.page-faq .faq-item__answer {
  padding: 0 20px 20px;
  color: var(--color-text-dim);
  font-size: 0.95rem;
  line-height: 1.75;
}

.page-faq .faq-item__answer p {
  margin: 0 0 10px;
}

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

.page-faq .faq-steps {
  margin: 10px 0 0;
  padding-left: 20px;
  display: grid;
  gap: 4px;
}

.page-faq .faq-steps li {
  line-height: 1.7;
}

/* ---------- 色带脚注 ---------- */
.page-faq .faq-band__foot {
  position: relative;
  z-index: 1;
  margin: 24px 0 0;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--band-accent);
  background: rgba(255, 255, 255, 0.02);
  border-left: 3px solid var(--band-accent);
  border-radius: var(--radius-cut);
}

/* ---------- 联系客服路径 ---------- */
.page-faq .faq-contact {
  background:
    radial-gradient(ellipse at 18% 20%, rgba(255, 92, 56, 0.08), transparent 46%),
    var(--color-bg-footer);
  border-top: 1px solid var(--color-border);
  padding: 56px 0 72px;
  scroll-margin-top: var(--header-height);
}

.page-faq .faq-contact__inner {
  display: grid;
  gap: 40px;
}

.page-faq .faq-contact h2 {
  font-family: var(--font-headline);
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  letter-spacing: -0.01em;
  margin: 10px 0 14px;
  text-transform: uppercase;
}

.page-faq .faq-contact__lead {
  color: var(--color-text-dim);
  line-height: 1.75;
  margin: 0 0 24px;
  max-width: 58ch;
}

.page-faq .faq-contact__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-contact__links .btn {
  text-decoration: none;
}

.page-faq .faq-contact__cards {
  display: grid;
  gap: 14px;
}

.page-faq .faq-contact__card {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  padding: 18px 20px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-cut);
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-faq .faq-contact__card:hover {
  background: rgba(255, 92, 56, 0.06);
  border-color: var(--color-orange);
}

.page-faq .faq-contact__icon {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: var(--color-orange);
  line-height: 1.3;
}

.page-faq .faq-contact__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  margin: 0 0 4px;
}

.page-faq .faq-contact__value {
  margin: 0;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  word-break: break-word;
}

.page-faq .faq-contact__note {
  margin: 4px 0 0;
  font-size: 0.82rem;
  color: var(--color-green);
}

@media (min-width: 900px) {
  .page-faq .faq-contact__inner {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 64px;
    align-items: start;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition: none !important;
    animation: none !important;
  }
}