.page-faq {
  background: #F7F3E8;
  color: #1A1714;
}

/* ===== 诊断台首屏 ===== */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: #0B1F33;
  color: #fff;
  padding: 88px 0 64px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -30%;
  width: 58%;
  height: 70%;
  background: #EF4A2A;
  transform: rotate(-8deg);
  z-index: 0;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: 16%;
  bottom: 8%;
  width: 90px;
  height: 90px;
  background: #FFC72C;
  transform: rotate(-8deg) skewX(-6deg);
  z-index: 1;
  opacity: 0.95;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 2;
  width: min(1200px, 92%);
  margin-inline: auto;
}

.page-faq .faq-hero__grid {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.page-faq .faq-hero__text {
  max-width: 640px;
}

.page-faq .faq-hero__kicker {
  display: inline-block;
  background: #FFC72C;
  color: #0B1F33;
  font-family: "JetBrains Mono", "Roboto Mono", Consolas, monospace;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 6px 12px;
  transform: skewX(-6deg);
  margin-bottom: 18px;
}

.page-faq .faq-hero h1 {
  font-family: "Archivo Black", "Noto Sans SC Black", "PingFang SC", sans-serif;
  font-size: clamp(2.3rem, 6vw, 4.6rem);
  line-height: 1.08;
  margin: 0 0 16px;
  color: #fff;
}

.page-faq .faq-hero__text p {
  font-size: 1rem;
  line-height: 1.8;
  opacity: 0.86;
  margin: 0;
}

.page-faq .faq-hero__index {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 4px 20px;
  max-width: 460px;
}

.page-faq .faq-hero__index a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: "JetBrains Mono", "Roboto Mono", Consolas, monospace;
  font-size: 0.92rem;
  color: #fff;
  text-decoration: none;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-hero__index a:hover {
  color: #FFC72C;
  border-color: #FFC72C;
}

.page-faq .faq-hero__index a span {
  color: #FFC72C;
  font-weight: 700;
  font-size: 1.1rem;
}

/* ===== 常见问题诊断台 ===== */
.page-faq .faq-desk {
  padding: 72px 0 80px;
}

.page-faq .faq-desk__head {
  width: min(1200px, 92%);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 36px;
}

.page-faq .faq-desk__head h2 {
  font-family: "Archivo Black", "Noto Sans SC Black", "PingFang SC", sans-serif;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  margin: 0;
}

.page-faq .faq-desk__head p {
  margin: 6px 0 0;
  font-size: 0.95rem;
  color: rgba(26, 23, 20, 0.7);
}

.page-faq .faq-desk__num,
.page-faq .faq-guide__num,
.page-faq .faq-checks__num {
  font-family: "JetBrains Mono", "Roboto Mono", Consolas, monospace;
  font-size: clamp(2.6rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1;
}

.page-faq .faq-desk__num {
  color: rgba(239, 74, 42, 0.28);
}

.page-faq .faq-desk__body {
  width: min(1200px, 92%);
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.page-faq .faq-filter-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-faq .faq-desk__aside {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  padding: 18px;
  background: #0B1F33;
  border-radius: 8px;
}

.page-faq .faq-desk__label {
  width: 100%;
  font-family: "JetBrains Mono", "Roboto Mono", Consolas, monospace;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 2px;
}

.page-faq .faq-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  font-family: "JetBrains Mono", "Roboto Mono", Consolas, monospace;
  font-size: 0.82rem;
  font-weight: 500;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.page-faq .faq-chip:hover {
  box-shadow: 0 0 0 2px #FFC72C;
}

.page-faq .faq-chip:active {
  background: #EF4A2A;
}

.page-faq #faq-all:checked ~ .faq-desk__aside label[for="faq-all"],
.page-faq #faq-download:checked ~ .faq-desk__aside label[for="faq-download"],
.page-faq #faq-data:checked ~ .faq-desk__aside label[for="faq-data"],
.page-faq #faq-guide:checked ~ .faq-desk__aside label[for="faq-guide"],
.page-faq #faq-account:checked ~ .faq-desk__aside label[for="faq-account"] {
  background: #EF4A2A;
  color: #fff;
  box-shadow: 0 0 0 2px #FFC72C;
}

.page-faq .faq-desk__list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-faq .faq-desk__list .faq-item {
  display: none;
}

.page-faq #faq-all:checked ~ .faq-desk__list .faq-item,
.page-faq #faq-download:checked ~ .faq-desk__list .faq-item[data-cat="download"],
.page-faq #faq-data:checked ~ .faq-desk__list .faq-item[data-cat="data"],
.page-faq #faq-guide:checked ~ .faq-desk__list .faq-item[data-cat="guide"],
.page-faq #faq-account:checked ~ .faq-desk__list .faq-item[data-cat="account"] {
  display: block;
}

.page-faq .faq-item {
  background: #fff;
  border: 1px solid rgba(11, 31, 51, 0.14);
  border-left: 4px solid #0B1F33;
  border-radius: 6px;
  box-shadow: 0 2px 8px rgba(11, 31, 51, 0.06);
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.page-faq .faq-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(11, 31, 51, 0.1);
}

.page-faq .faq-item[open] {
  border-color: #FFC72C;
  border-left-color: #EF4A2A;
  box-shadow: 0 0 0 2px #FFC72C, 0 8px 24px rgba(11, 31, 51, 0.1);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 18px 18px 20px;
  list-style: none;
  cursor: pointer;
  font-weight: 600;
}

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

.page-faq .faq-item__num {
  flex: 0 0 auto;
  min-width: 46px;
  text-align: center;
  font-family: "JetBrains Mono", "Roboto Mono", Consolas, monospace;
  font-size: 1.35rem;
  font-weight: 700;
  color: #EF4A2A;
  background: rgba(239, 74, 42, 0.08);
  border-radius: 4px;
  padding: 4px 2px;
}

.page-faq .faq-item__title {
  flex: 1 1 auto;
  font-size: 1.02rem;
  line-height: 1.4;
}

.page-faq .faq-item__arrow {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  border-right: 2px solid #EF4A2A;
  border-bottom: 2px solid #EF4A2A;
  transform: rotate(45deg);
  transition: transform 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
  margin-right: 8px;
}

.page-faq .faq-item[open] .faq-item__arrow {
  transform: rotate(225deg) translate(2px, 2px);
}

.page-faq .faq-item__answer {
  background: #F7F3E8;
  border-top: 1px dashed rgba(11, 31, 51, 0.18);
  padding: 18px 20px 22px;
  line-height: 1.85;
  font-size: 0.96rem;
}

.page-faq .faq-item__answer a {
  color: #EF4A2A;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

/* ===== 新用户专栏使用说明 ===== */
.page-faq .faq-guide {
  background: #0B1F33;
  color: #fff;
  padding: 80px 0 88px;
}

.page-faq .faq-guide__inner {
  width: min(1200px, 92%);
  margin-inline: auto;
}

.page-faq .faq-guide__intro {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  margin-bottom: 36px;
}

.page-faq .faq-guide__num {
  color: rgba(255, 199, 44, 0.35);
}

.page-faq .faq-guide__intro h2 {
  font-family: "Archivo Black", "Noto Sans SC Black", "PingFang SC", sans-serif;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin: 0 0 8px;
}

.page-faq .faq-guide__intro p {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.7;
  opacity: 0.8;
}

.page-faq .faq-guide__steps {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}

.page-faq .faq-guide__step {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 6px;
}

.page-faq .faq-guide__step-idx {
  flex: 0 0 auto;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  background: #FFC72C;
  color: #0B1F33;
  font-family: "JetBrains Mono", "Roboto Mono", Consolas, monospace;
  font-weight: 700;
  font-size: 1rem;
  border-radius: 50%;
}

.page-faq .faq-guide__step strong {
  display: block;
  font-size: 1rem;
}

.page-faq .faq-guide__step p {
  margin: 2px 0 0;
  font-size: 0.86rem;
  opacity: 0.75;
}

.page-faq .faq-guide__cards {
  display: grid;
  gap: 14px;
  margin-bottom: 32px;
}

.page-faq .faq-guide__card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  padding: 22px 20px;
  backdrop-filter: blur(6px);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.page-faq .faq-guide__card:hover {
  border-color: #FFC72C;
  transform: translateY(-2px);
}

.page-faq .faq-guide__card span {
  font-family: "JetBrains Mono", "Roboto Mono", Consolas, monospace;
  font-size: 0.75rem;
  color: #FFC72C;
}

.page-faq .faq-guide__card h3 {
  font-size: 1.12rem;
  margin: 10px 0 8px;
}

.page-faq .faq-guide__card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  opacity: 0.82;
}

.page-faq .faq-guide__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  background: rgba(255, 199, 44, 0.1);
  border-left: 4px solid #FFC72C;
  font-family: "JetBrains Mono", "Roboto Mono", Consolas, monospace;
  font-size: 0.92rem;
  margin: 0;
}

/* ===== 故障快速自查 ===== */
.page-faq .faq-checks {
  padding: 80px 0;
}

.page-faq .faq-checks__inner {
  width: min(1200px, 92%);
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.page-faq .faq-checks__media img {
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 3;
  object-fit: cover;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(11, 31, 51, 0.18);
  background: #0B1F33;
}

.page-faq .faq-checks__content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-faq .faq-checks__num {
  color: rgba(239, 74, 42, 0.3);
}

.page-faq .faq-checks__content h2 {
  font-family: "Archivo Black", "Noto Sans SC Black", "PingFang SC", sans-serif;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin: 0 0 8px;
}

.page-faq .faq-checks__lead {
  margin: 0 0 20px;
  font-size: 0.95rem;
  color: rgba(26, 23, 20, 0.72);
  line-height: 1.7;
}

.page-faq .faq-checks__steps {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
}

.page-faq .faq-step-card {
  display: block;
  width: 100%;
  text-align: left;
  background: #0B1F33;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-left: 4px solid #FFC72C;
  border-radius: 6px;
  padding: 18px 20px;
  font-family: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
  cursor: pointer;
  transition: transform 0.2s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.2s cubic-bezier(0.2, 0.8, 0.2, 1), border-color 0.2s ease;
}

.page-faq .faq-step-card__idx {
  display: inline-block;
  font-family: "JetBrains Mono", "Roboto Mono", Consolas, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: #FFC72C;
  margin-bottom: 6px;
}

.page-faq .faq-step-card strong {
  display: block;
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.page-faq .faq-step-card span:last-child {
  font-size: 0.85rem;
  opacity: 0.8;
  line-height: 1.6;
}

.page-faq .faq-step-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(11, 31, 51, 0.16);
}

.page-faq .faq-step-card:focus {
  outline: 3px solid #FFC72C;
  outline-offset: 2px;
}

.page-faq .faq-step-card:focus ~ .faq-step-card,
.page-faq .faq-step-card:hover ~ .faq-step-card {
  border-color: #FF8C42;
  box-shadow: inset 0 0 0 2px rgba(255, 140, 66, 0.7);
}

/* ===== 联系我们 ===== */
.page-faq .faq-contact {
  padding-bottom: 80px;
}

.page-faq .faq-contact__banner {
  background: linear-gradient(105deg, #EF4A2A 0%, #FF8C42 75%, #FFC72C 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), 0 100%);
  padding: 56px 0 68px;
  margin-bottom: 48px;
}

.page-faq .faq-contact__banner-inner {
  width: min(1200px, 92%);
  margin-inline: auto;
}

.page-faq .faq-contact__banner h2 {
  font-family: "Archivo Black", "Noto Sans SC Black", "PingFang SC", sans-serif;
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  color: #fff;
  margin: 0 0 10px;
}

.page-faq .faq-contact__banner p {
  margin: 0;
  max-width: 640px;
  font-size: 1rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.92);
}

.page-faq .faq-contact__body {
  width: min(1200px, 92%);
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

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

.page-faq .faq-contact__card {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 22px 20px;
  background: #E5E1D8;
  border-radius: 8px;
  border-left: 4px solid #EF4A2A;
}

.page-faq .faq-contact__label {
  font-family: "JetBrains Mono", "Roboto Mono", Consolas, monospace;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(26, 23, 20, 0.55);
}

.page-faq .faq-contact__value {
  font-size: 1.08rem;
  font-weight: 600;
  color: #1A1714;
  text-decoration: none;
  word-break: break-all;
}

.page-faq a.faq-contact__value:hover {
  color: #EF4A2A;
}

.page-faq .faq-contact__note {
  font-size: 0.85rem;
  color: rgba(26, 23, 20, 0.65);
  line-height: 1.6;
}

.page-faq .copy-mail-trigger {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-faq .copy-mail-btn {
  justify-self: start;
  margin-top: 6px;
  padding: 8px 16px;
  background: #0B1F33;
  color: #fff;
  font-family: "JetBrains Mono", "Roboto Mono", Consolas, monospace;
  font-size: 0.82rem;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.page-faq .copy-mail-btn:hover {
  background: #EF4A2A;
  box-shadow: 0 0 0 2px #FFC72C;
}

.page-faq .copy-mail-toast {
  background: #0B1F33;
  color: #fff;
  font-family: "JetBrains Mono", "Roboto Mono", Consolas, monospace;
  font-size: 0.78rem;
  padding: 0 12px;
  border-radius: 4px;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.25s cubic-bezier(0.2, 0.8, 0.2, 1), opacity 0.25s cubic-bezier(0.2, 0.8, 0.2, 1), padding 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.page-faq .copy-mail-trigger:checked ~ .copy-mail-toast {
  max-height: 48px;
  opacity: 1;
  padding: 8px 12px;
}

.page-faq .faq-contact__aside img {
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(11, 31, 51, 0.18);
  background: #0B1F33;
}

/* ===== 桌面端布局 ===== */
@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    display: grid;
    grid-template-columns: 1.25fr 0.75fr;
    gap: 48px;
    align-items: end;
  }

  .page-faq .faq-hero__index {
    grid-template-columns: 1fr;
  }

  .page-faq .faq-desk__body {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 36px;
    align-items: start;
  }

  .page-faq .faq-desk__aside {
    position: sticky;
    top: calc(62px + 20px);
    flex-direction: column;
    align-items: stretch;
    padding: 22px 18px;
  }

  .page-faq .faq-desk__label {
    width: auto;
  }

  .page-faq .faq-chip {
    justify-content: flex-start;
  }

  .page-faq .faq-guide__steps {
    flex-direction: row;
    gap: 16px;
  }

  .page-faq .faq-guide__step {
    flex: 1;
  }

  .page-faq .faq-guide__cards {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .faq-checks__inner {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 48px;
    align-items: center;
  }

  .page-faq .faq-contact__body {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
    align-items: center;
  }

  .page-faq .faq-contact__cards {
    grid-template-columns: repeat(2, 1fr);
  }
}