.page-faq {
  --faq-body: #d5d8db;
  --faq-body-dim: #a9b0b7;
  background: var(--k1-black);
  color: var(--k1-chalk);
  font-family: var(--k1-font-body);
  padding-bottom: 72px;
}

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

.page-faq a:focus-visible,
.page-faq button:focus-visible,
.page-faq summary:focus-visible {
  outline: 3px solid var(--k1-lime);
  outline-offset: 3px;
}

.page-faq .k1-mono {
  font-family: var(--k1-font-mono);
  letter-spacing: 0.02em;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 24px 0 44px;
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(230, 51, 41, 0.26), transparent 58%),
    radial-gradient(80% 70% at 4% 100%, rgba(31, 122, 90, 0.22), transparent 60%),
    var(--k1-black);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -32%;
  right: -18%;
  width: 60%;
  height: 150%;
  background: linear-gradient(160deg, rgba(168, 255, 62, 0.08), transparent 62%);
  transform: skewX(-9deg);
  pointer-events: none;
}

.page-faq .faq-hero .k1-container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero-top {
  margin-top: 18px;
}

.page-faq .faq-h1 {
  font-family: var(--k1-font-display);
  font-weight: 900;
  font-size: clamp(2.05rem, 8vw, 3.75rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
  margin: 12px 0 18px;
  max-width: 16ch;
  text-wrap: balance;
}

.page-faq .faq-lead {
  margin: 0;
  font-size: 1rem;
  line-height: 1.78;
  color: var(--faq-body);
  max-width: 66ch;
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: 18px;
  margin-top: 30px;
}

.page-faq .faq-badge {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  padding: 22px 20px 24px;
  background: var(--k1-lime);
  color: var(--k1-black);
  border: 3px solid var(--k1-black);
  border-radius: var(--k1-radius);
  box-shadow: var(--k1-shadow);
}

.page-faq .faq-badge::after {
  content: "";
  position: absolute;
  top: 14px;
  right: 16px;
  width: 46px;
  height: 46px;
  border: 3px solid rgba(11, 11, 12, 0.28);
  border-radius: 50%;
  pointer-events: none;
}

.page-faq .faq-badge .k1-tag {
  background: var(--k1-black);
  color: var(--k1-lime);
  font-family: var(--k1-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  padding: 4px 10px;
  border-radius: var(--k1-radius-pill);
}

.page-faq .faq-badge-code {
  margin: 0;
  font-family: var(--k1-font-mono);
  font-weight: 700;
  font-size: clamp(2.3rem, 12vw, 4rem);
  line-height: 0.92;
  letter-spacing: -0.03em;
}

.page-faq .faq-badge-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  width: 100%;
  margin: 0;
  padding: 12px 0;
  border-top: 2px dashed rgba(11, 11, 12, 0.35);
  border-bottom: 2px dashed rgba(11, 11, 12, 0.35);
}

.page-faq .faq-badge-meta dt {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.72;
}

.page-faq .faq-badge-meta dd {
  margin: 4px 0 0;
  font-family: var(--k1-font-mono);
  font-weight: 700;
  font-size: 1rem;
}

.page-faq .faq-badge-note {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.66;
  color: rgba(11, 11, 12, 0.84);
}

.page-faq .faq-badge .k1-btn {
  background: var(--k1-black);
  color: var(--k1-chalk);
  border: 2px solid var(--k1-black);
}

.page-faq .faq-hero-figure {
  margin: 0;
  border: var(--k1-border-strong);
  border-radius: var(--k1-radius);
  overflow: hidden;
  background: var(--k1-concrete);
  box-shadow: var(--k1-shadow);
}

.page-faq .faq-hero-figure img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 210px;
  object-fit: cover;
}

/* ---------- 通用章节 ---------- */
.page-faq .faq-section {
  padding-top: 54px;
}

.page-faq .faq-sec-head {
  display: grid;
  gap: 10px;
  margin-bottom: 22px;
  max-width: 74ch;
}

.page-faq .faq-sec-head h2 {
  margin: 0;
  font-family: var(--k1-font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 5vw, 2.15rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
}

.page-faq .faq-sec-head p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.76;
  color: var(--faq-body-dim);
}

/* ---------- 平台分段切换 ---------- */
.page-faq .faq-tabbar {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 2px 2px 8px;
  scrollbar-width: thin;
}

.page-faq .k1-tab {
  flex: 0 0 auto;
  appearance: none;
  border: 2px solid var(--k1-stand);
  background: var(--k1-concrete);
  color: var(--k1-chalk);
  font-family: var(--k1-font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  padding: 10px 18px;
  border-radius: var(--k1-radius-pill);
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s var(--k1-ease), color 0.2s var(--k1-ease),
    border-color 0.2s var(--k1-ease);
}

.page-faq .k1-tab:hover {
  border-color: var(--k1-red);
}

.page-faq .k1-tab[aria-selected="true"],
.page-faq .k1-tab.is-active {
  background: var(--k1-red);
  border-color: var(--k1-red);
  color: var(--k1-chalk);
}

.page-faq .k1-tabpanel {
  margin-top: 12px;
  padding: 18px 16px 20px;
  background: var(--k1-concrete);
  border: var(--k1-border);
  border-radius: var(--k1-radius);
  box-shadow: var(--k1-shadow);
}

.page-faq .k1-tabpanel[hidden] {
  display: none;
}

.page-faq .faq-req {
  margin: 0;
  padding-bottom: 12px;
  border-bottom: 2px dashed var(--k1-stand);
  font-size: 0.86rem;
  color: var(--faq-body-dim);
}

.page-faq .faq-req .k1-mono {
  color: var(--k1-lime);
  font-weight: 700;
}

.page-faq .faq-steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-steps li {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  font-size: 0.93rem;
  line-height: 1.7;
  color: var(--faq-body);
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  font-family: var(--k1-font-mono);
  font-size: 0.74rem;
  line-height: 1.5;
  text-align: center;
  padding: 3px 0;
  color: var(--k1-lime);
  border: 2px solid var(--k1-stand);
  border-radius: 6px;
}

/* ---------- 面板字段 ---------- */
.page-faq .faq-fields {
  display: grid;
  gap: 12px;
}

.page-faq .faq-field {
  padding: 18px 16px;
  background: var(--k1-concrete);
  border: var(--k1-border);
  border-top: 4px solid var(--k1-green);
  border-radius: var(--k1-radius);
}

.page-faq .faq-field h3 {
  margin: 0 0 8px;
  font-size: 1.02rem;
  letter-spacing: -0.01em;
}

.page-faq .faq-field p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--faq-body-dim);
}

.page-faq .faq-readout {
  display: grid;
  gap: 14px;
  margin: 18px 0 0;
  padding: 18px 16px;
  border: 2px dashed var(--k1-stand);
  border-radius: var(--k1-radius);
  background: rgba(23, 24, 26, 0.72);
}

.page-faq .faq-readout dt {
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--k1-mist);
}

.page-faq .faq-readout dd {
  margin: 5px 0 0;
  font-family: var(--k1-font-mono);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--k1-lime);
}

/* ---------- 会员档位 ---------- */
.page-faq .faq-tiers {
  display: grid;
  gap: 14px;
}

.page-faq .faq-tier {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 18px;
  background: var(--k1-concrete);
  border: var(--k1-border-strong);
  border-radius: var(--k1-radius);
}

.page-faq .faq-tier h3 {
  margin: 0;
  font-family: var(--k1-font-display);
  font-weight: 900;
  font-size: 1.24rem;
  letter-spacing: -0.02em;
}

.page-faq .faq-tier-note {
  margin: 0;
  font-family: var(--k1-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--k1-mist);
}

.page-faq .faq-tier ul {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-tier li {
  position: relative;
  padding-left: 18px;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--faq-body);
}

.page-faq .faq-tier li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 8px;
  height: 8px;
  background: var(--k1-mist);
  transform: rotate(45deg);
}

.page-faq .faq-tier--mid {
  border-color: var(--k1-red);
  box-shadow: var(--k1-shadow-lift);
}

.page-faq .faq-tier--mid li::before {
  background: var(--k1-red);
}

.page-faq .faq-tier--top {
  background: linear-gradient(180deg, rgba(31, 122, 90, 0.34), var(--k1-concrete) 72%);
  border-color: var(--k1-green);
}

.page-faq .faq-tier--top li::before {
  background: var(--k1-lime);
}

.page-faq .faq-seatbox {
  margin-top: 22px;
  padding: 20px 18px 22px;
  background: var(--k1-concrete);
  border: var(--k1-border);
  border-radius: var(--k1-radius);
}

.page-faq .faq-seatbox h3 {
  margin: 0 0 16px;
  font-size: 1.06rem;
  letter-spacing: -0.01em;
}

.page-faq .faq-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-timeline li {
  position: relative;
  padding: 0 0 20px 26px;
  border-left: 2px solid var(--k1-stand);
}

.page-faq .faq-timeline li:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-faq .faq-timeline li::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 3px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--k1-amber);
  border: 2px solid var(--k1-black);
}

.page-faq .faq-timeline strong {
  display: block;
  font-family: var(--k1-font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--k1-amber);
}

.page-faq .faq-timeline p {
  margin: 6px 0 0;
  font-size: 0.9rem;
  line-height: 1.68;
  color: var(--faq-body-dim);
}

/* ---------- 账号与通知 ---------- */
.page-faq .faq-split {
  display: grid;
  gap: 20px;
  align-items: center;
}

.page-faq .faq-figure {
  margin: 0;
  border: var(--k1-border-strong);
  border-radius: var(--k1-radius);
  overflow: hidden;
  background: var(--k1-concrete);
  transform: rotate(-1deg);
}

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

.page-faq .faq-split-copy h2 {
  margin: 10px 0 12px;
  font-family: var(--k1-font-display);
  font-weight: 900;
  font-size: clamp(1.42rem, 4.8vw, 2rem);
  line-height: 1.06;
  letter-spacing: -0.03em;
}

.page-faq .faq-split-copy > p {
  margin: 0 0 16px;
  font-size: 0.94rem;
  line-height: 1.76;
  color: var(--faq-body-dim);
}

.page-faq .faq-checks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-checks li {
  padding-left: 14px;
  border-left: 3px solid var(--k1-green);
  font-size: 0.9rem;
  line-height: 1.66;
  color: var(--faq-body);
}

.page-faq .faq-checks strong {
  color: var(--k1-chalk);
}

.page-faq .faq-mini {
  margin: 16px 0 0;
  font-size: 0.86rem;
}

.page-faq .faq-mini a {
  color: var(--k1-lime);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 故障排查 ---------- */
.page-faq .faq-trouble {
  display: grid;
  gap: 12px;
}

.page-faq .faq-trouble-card {
  padding: 18px 16px;
  background: var(--k1-concrete);
  border: var(--k1-border);
  border-left: 4px solid var(--k1-red);
  border-radius: var(--k1-radius);
}

.page-faq .faq-trouble-card h3 {
  margin: 0 0 10px;
  font-size: 1rem;
  letter-spacing: -0.01em;
}

.page-faq .faq-trouble-card ol {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 7px;
}

.page-faq .faq-trouble-card li {
  font-size: 0.88rem;
  line-height: 1.66;
  color: var(--faq-body-dim);
}

.page-faq .faq-trouble-card li::marker {
  font-family: var(--k1-font-mono);
  color: var(--k1-red);
}

/* ---------- 问答区 ---------- */
.page-faq .faq-section--qa {
  padding-top: 60px;
}

.page-faq .faq-faq-grid {
  display: grid;
  gap: 22px;
}

.page-faq .faq-toc {
  min-width: 0;
  padding: 12px 14px;
  background: var(--k1-concrete);
  border: var(--k1-border);
  border-radius: var(--k1-radius);
}

.page-faq .faq-toc-title {
  margin: 0 0 10px;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--k1-mist);
}

.page-faq .faq-toc-list {
  list-style: none;
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-toc-list li {
  flex: 0 0 auto;
}

.page-faq .faq-toc-list a {
  display: block;
  padding: 7px 12px;
  border: 2px solid var(--k1-stand);
  border-radius: var(--k1-radius-pill);
  font-size: 0.8rem;
  color: var(--k1-chalk);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.2s var(--k1-ease), color 0.2s var(--k1-ease);
}

.page-faq .faq-toc-list a:hover {
  border-color: var(--k1-lime);
  color: var(--k1-lime);
}

.page-faq .faq-qa-body {
  min-width: 0;
}

.page-faq .faq-group {
  margin-bottom: 24px;
  scroll-margin-top: calc(var(--k1-header-h) + 20px);
}

.page-faq .faq-group:last-of-type {
  margin-bottom: 0;
}

.page-faq .faq-group-title {
  margin: 0 0 12px;
  font-family: var(--k1-font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--k1-lime);
}

.page-faq .faq-item {
  background: var(--k1-concrete);
  border: var(--k1-border);
  border-radius: var(--k1-radius);
  margin-bottom: 10px;
  overflow: hidden;
  transition: border-color 0.2s var(--k1-ease);
}

.page-faq .faq-item[open] {
  border-color: var(--k1-red);
}

.page-faq .faq-item summary {
  position: relative;
  padding: 15px 46px 15px 16px;
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.55;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item summary::after {
  content: "+";
  position: absolute;
  right: 15px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--k1-font-mono);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--k1-lime);
}

.page-faq .faq-item[open] summary::after {
  content: "–";
  color: var(--k1-red);
}

.page-faq .faq-a {
  padding: 0 16px 16px;
}

.page-faq .faq-a p {
  margin: 0;
  padding-top: 12px;
  border-top: 2px dashed var(--k1-stand);
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--faq-body);
}

.page-faq .faq-qa-foot {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 2px solid var(--k1-stand);
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--faq-body-dim);
}

.page-faq .faq-qa-foot a {
  color: var(--k1-lime);
  text-decoration: underline;
  text-underline-offset: 3px;
  margin: 0 2px;
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-hero {
    padding: 30px 0 56px;
  }

  .page-faq .faq-fields {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-readout {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-trouble {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: stretch;
  }

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

  .page-faq .faq-section {
    padding-top: 76px;
  }

  .page-faq .faq-section--qa {
    padding-top: 84px;
  }

  .page-faq .faq-tiers {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 32px;
  }

  .page-faq .k1-tabpanel {
    padding: 22px 24px 24px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-faq-grid {
    grid-template-columns: 196px minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--k1-header-h) + 18px);
  }

  .page-faq .faq-toc-list {
    display: grid;
    gap: 8px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-toc-list a {
    border-radius: var(--k1-radius);
    border-color: transparent;
    border-left: 3px solid var(--k1-stand);
    font-size: 0.84rem;
    white-space: normal;
  }

  .page-faq .faq-toc-list a:hover {
    border-left-color: var(--k1-lime);
    background: rgba(168, 255, 62, 0.07);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .k1-tab,
  .page-faq .faq-item,
  .page-faq .faq-toc-list a {
    transition: none;
  }
}