/* ==========================================================
   page: faq — 礼包码与常见问题
   全部选择器限定在 .page-faq 作用域内
   ========================================================== */

.page-faq {
  --faq-hair: 1px solid var(--line-blue);
  --faq-paper-line: rgba(59, 85, 120, 0.34);
  --faq-paper-ink: #16233A;
  --faq-paper-muted: #4E5A6E;
  --faq-step: 24px;
  background: var(--canyon-800);
  color: var(--sand-white);
}

/* ---------- 顶部线索行 ---------- */
.page-faq .faq-topline {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 24px;
  padding-top: 26px;
}
.page-faq .faq-topline__file {
  letter-spacing: 0.18em;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: 32px;
  padding: 40px 0 8px;
}
@media (min-width: 1024px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 68px;
    align-items: end;
    padding: 76px 0 28px;
  }
}
.page-faq .faq-hero__kicker {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--volt-cyan);
}
.page-faq .faq-hero__kicker .mono {
  color: var(--desert-gold);
}
.page-faq .faq-hero h1 {
  margin: 0 0 20px;
}
.page-faq .faq-hero__lead {
  margin: 0 0 28px;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--sand-white);
}
@media (min-width: 1024px) {
  .page-faq .faq-hero__lead {
    font-size: 17px;
  }
}

.page-faq .faq-jump {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: var(--faq-hair);
  border-left: var(--faq-hair);
}
@media (min-width: 700px) {
  .page-faq .faq-jump {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
.page-faq .faq-jump li {
  border-right: var(--faq-hair);
  border-bottom: var(--faq-hair);
}
.page-faq .faq-jump a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 13px 14px;
  font-size: 14px;
  text-decoration: none;
  color: var(--sand-white);
  transition: background-color 160ms var(--ease), color 160ms var(--ease);
}
.page-faq .faq-jump a .mono {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--desert-gold);
  transition: color 160ms var(--ease);
}
.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  background: var(--canyon-700);
  color: var(--volt-cyan);
}
.page-faq .faq-jump a:hover .mono,
.page-faq .faq-jump a:focus-visible .mono {
  color: var(--volt-cyan);
}

/* 首屏版本面板 */
.page-faq .faq-hero__panel {
  position: relative;
  padding: 30px 22px 26px 46px;
  border: var(--faq-hair);
  background: linear-gradient(180deg, var(--canyon-700) 0%, var(--canyon-800) 100%);
}
.page-faq .faq-hero__panel::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 22px;
  width: 44px;
  height: 3px;
  background: var(--desert-gold);
}
.page-faq .faq-hero__panel .annot--vertical {
  position: absolute;
  top: 32px;
  left: 16px;
  letter-spacing: 0.3em;
}
.page-faq .faq-hero__ver {
  margin: 0 0 10px;
  font-size: clamp(52px, 12vw, 72px);
  line-height: 0.94;
  letter-spacing: -0.04em;
  color: var(--desert-gold);
  user-select: all;
}
.page-faq .faq-hero__vernote {
  margin: 0 0 20px;
  max-width: 26em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--rock-grey);
}
.page-faq .faq-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

/* ---------- 区块骨架 ---------- */
.page-faq .faq-block {
  padding: 52px 0;
}
@media (min-width: 900px) {
  .page-faq .faq-block {
    padding: 84px 0;
  }
}
.page-faq .faq-block--last {
  padding-bottom: 96px;
}
@media (min-width: 900px) {
  .page-faq .faq-block--last {
    padding-bottom: 128px;
  }
}

.page-faq .faq-head {
  display: grid;
  gap: 8px;
  padding-bottom: 22px;
  margin-bottom: 34px;
  border-bottom: var(--faq-hair);
}
@media (min-width: 900px) {
  .page-faq .faq-head {
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: baseline;
    gap: 20px;
  }
  .page-faq .faq-head .section-note {
    text-align: right;
  }
}

/* ---------- 01 三档结论表 ---------- */
.page-faq .faq-tablewrap {
  overflow-x: auto;
  border: var(--faq-hair);
  background: var(--canyon-900);
  -webkit-overflow-scrolling: touch;
}
.page-faq .faq-table {
  width: 100%;
  min-width: 660px;
}
.page-faq .faq-table caption {
  caption-side: top;
  text-align: left;
  padding: 12px 16px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--rock-grey);
  border-bottom: var(--faq-hair);
}
.page-faq .faq-table th[scope="row"] {
  white-space: nowrap;
  color: var(--desert-gold);
}
.page-faq .faq-table th[scope="row"] .mono {
  display: inline-block;
  min-width: 1.6em;
  margin-right: 4px;
  color: var(--volt-cyan);
}

.page-faq .faq-figure {
  margin: 28px 0 0;
}
.page-faq .faq-figure img {
  display: block;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 02 阶梯卡组 ---------- */
.page-faq .faq-stairs {
  display: grid;
  gap: 20px;
  padding-bottom: 8px;
}
@media (min-width: 900px) {
  .page-faq .faq-stairs {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
    align-items: start;
    padding-bottom: 72px;
  }
  .page-faq .faq-tier--b {
    margin-top: var(--faq-step);
  }
  .page-faq .faq-tier--c {
    margin-top: calc(var(--faq-step) * 2);
  }
}
.page-faq .faq-tier {
  --tier-accent: var(--desert-gold);
  border-top: 2px solid var(--tier-accent);
}
.page-faq .faq-tier--b {
  --tier-accent: var(--volt-cyan);
}
.page-faq .faq-tier--c {
  --tier-accent: var(--flame-orange);
}
.page-faq .faq-tier .archive-tag {
  color: var(--tier-accent);
}
.page-faq .faq-tier__body {
  display: block;
}
.page-faq .faq-tier__hint {
  margin: 14px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--tier-accent);
  font-size: 13px;
  line-height: 1.7;
  color: var(--rock-grey);
  opacity: 0.5;
  transition: opacity 160ms var(--ease), color 160ms var(--ease);
}
.page-faq .faq-tier:hover .faq-tier__hint,
.page-faq .faq-tier:focus-visible .faq-tier__hint {
  opacity: 1;
  color: var(--sand-white);
}
.page-faq .faq-tier .archive-rail.mono {
  transition: color 160ms var(--ease);
}
.page-faq .faq-tier:hover .archive-rail.mono,
.page-faq .faq-tier:focus-visible .archive-rail.mono {
  color: var(--volt-cyan);
}

/* ---------- 03 版本刻度 ---------- */
.page-faq .faq-version {
  display: grid;
  gap: 34px;
}
@media (min-width: 1024px) {
  .page-faq .faq-version {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 64px;
    align-items: start;
  }
}
.page-faq .faq-version__text p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--sand-white);
}
.page-faq .faq-version__copy {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  margin: 4px 0 0 !important;
  padding: 14px 16px;
  border: var(--faq-hair);
  background: var(--canyon-900);
}
.page-faq .faq-version__num {
  font-size: 30px;
  letter-spacing: -0.02em;
  color: var(--volt-cyan);
  user-select: all;
}

.page-faq .faq-scale {
  margin: 0;
  padding: 26px 0 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
  border-top: var(--faq-hair);
}
.page-faq .faq-scale li {
  position: relative;
  padding-top: 20px;
  font-size: 13px;
  color: var(--rock-grey);
}
.page-faq .faq-scale li::before {
  content: "";
  position: absolute;
  top: -5px;
  left: 0;
  width: 9px;
  height: 9px;
  background: var(--canyon-800);
  border: 1px solid var(--line-blue);
}
.page-faq .faq-scale li .mono {
  display: block;
  font-size: 14px;
  letter-spacing: -0.01em;
  color: var(--rock-grey);
}
.page-faq .faq-scale li small {
  display: block;
  margin-top: 4px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--rock-grey);
}
.page-faq .faq-scale li.is-now {
  color: var(--sand-white);
}
.page-faq .faq-scale li.is-now::before {
  background: var(--desert-gold);
  border-color: var(--desert-gold);
}
.page-faq .faq-scale li.is-now .mono {
  color: var(--desert-gold);
  font-size: 17px;
}
.page-faq .faq-scale li.is-now small {
  color: var(--desert-gold);
}

/* ---------- 04 四步流程 ---------- */
.page-faq .faq-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: var(--faq-hair);
}
.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 22px 0;
  border-bottom: var(--faq-hair);
}
@media (min-width: 900px) {
  .page-faq .faq-steps li {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 4px 24px;
    padding: 26px 0;
  }
}
.page-faq .faq-steps__num {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--desert-gold);
}
.page-faq .faq-steps h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--sand-white);
}
.page-faq .faq-steps p {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--rock-grey);
}

/* ---------- 05 异常情形 ---------- */
.page-faq .faq-faults {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  border: var(--faq-hair);
  background: var(--line-blue);
}
@media (min-width: 860px) {
  .page-faq .faq-faults {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
.page-faq .faq-faults > li {
  padding: 24px 20px 22px;
  background: var(--canyon-800);
  transition: background-color 160ms var(--ease);
}
.page-faq .faq-faults > li:hover {
  background: var(--canyon-700);
}
.page-faq .faq-faults h3 {
  margin: 14px 0 10px;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--sand-white);
}
.page-faq .faq-faults p {
  margin: 0 0 12px;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--rock-grey);
}
.page-faq .faq-faults__do {
  margin: 0 !important;
  padding-top: 12px;
  border-top: var(--faq-hair);
  font-size: 13px;
  color: var(--sand-white);
}
.page-faq .faq-faults__do .mono {
  margin-right: 8px;
  color: var(--volt-cyan);
  letter-spacing: 0.1em;
}

/* ---------- 06 问答索引（浅色画册页） ---------- */
.page-faq .faq-index {
  background: var(--paper-white);
  color: var(--faq-paper-ink);
}
.page-faq .faq-index__figure {
  margin: 0 0 30px;
}
.page-faq .faq-index__figure img {
  display: block;
  max-width: 100%;
  object-fit: cover;
}
.page-faq .faq-index__figure .media-frame__caption {
  color: var(--faq-paper-muted);
}
.page-faq .faq-index__head {
  display: grid;
  gap: 8px;
  padding-bottom: 20px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--faq-paper-line);
}
@media (min-width: 900px) {
  .page-faq .faq-index__head {
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: baseline;
    gap: 20px;
  }
  .page-faq .faq-index__head .section-note {
    text-align: right;
  }
}
.page-faq .faq-index .section-title {
  color: var(--faq-paper-ink);
}
.page-faq .faq-index .section-note {
  color: var(--faq-paper-muted);
}
.page-faq .faq-index .section-num {
  color: var(--desert-gold);
}

.page-faq .faq-board {
  position: relative;
}
.page-faq .faq-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
}
.page-faq .faq-filters input[type="radio"] {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
.page-faq .faq-filters label {
  display: inline-block;
  padding: 7px 15px;
  border: 1px solid var(--faq-paper-line);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--faq-paper-muted);
  cursor: pointer;
  transition: background-color 160ms var(--ease), color 160ms var(--ease),
    border-color 160ms var(--ease);
}
.page-faq .faq-filters label:hover {
  border-color: var(--desert-gold);
  color: var(--faq-paper-ink);
}
.page-faq .faq-filters input[type="radio"]:checked + label {
  background: var(--faq-paper-ink);
  border-color: var(--faq-paper-ink);
  color: var(--paper-white);
}
.page-faq .faq-filters input[type="radio"]:focus-visible + label {
  outline: 2px solid var(--volt-cyan);
  outline-offset: 2px;
}

.page-faq .faq-list {
  border-top: 1px solid var(--faq-paper-line);
}
.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-paper-line);
}
.page-faq .faq-item summary {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) auto;
  gap: 0 8px;
  align-items: baseline;
  padding: 17px 2px 17px 0;
  list-style: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--faq-paper-ink);
  transition: color 160ms var(--ease);
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--line-blue);
  transition: color 160ms var(--ease);
}
.page-faq .faq-item[open] summary::after {
  content: "–";
  color: var(--flame-orange);
}
.page-faq .faq-item summary:hover {
  color: var(--flame-orange);
}
.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--volt-cyan);
  outline-offset: 2px;
}
.page-faq .faq-item__num {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--line-blue);
  transition: color 160ms var(--ease);
}
.page-faq .faq-item[open] .faq-item__num {
  color: var(--flame-orange);
}
.page-faq .faq-item__body {
  margin: 0;
  padding: 0 0 20px 46px;
  border-left: 2px solid transparent;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-paper-muted);
  transition: border-color 160ms var(--ease);
}
.page-faq .faq-item[open] .faq-item__body {
  border-left-color: var(--desert-gold);
}
.page-faq .faq-item__body p {
  margin: 0 0 10px;
  max-width: 42em;
}
.page-faq .faq-item__body p:last-child {
  margin-bottom: 0;
}

/* 纯 CSS 类别筛选 */
.page-faq .faq-board:has(#faq-cat-install:checked) .faq-item:not([data-cat="install"]),
.page-faq .faq-board:has(#faq-cat-login:checked) .faq-item:not([data-cat="login"]),
.page-faq .faq-board:has(#faq-cat-code:checked) .faq-item:not([data-cat="code"]),
.page-faq .faq-board:has(#faq-cat-zone:checked) .faq-item:not([data-cat="zone"]) {
  display: none;
}

/* ---------- 07 分区与开服 ---------- */
.page-faq .faq-zone {
  display: grid;
  gap: 1px;
  background: var(--line-blue);
  border: var(--faq-hair);
}
@media (min-width: 860px) {
  .page-faq .faq-zone {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
.page-faq .faq-zone__card {
  padding: 24px 20px;
  background: var(--canyon-900);
  transition: background-color 160ms var(--ease);
}
.page-faq .faq-zone__card:hover {
  background: var(--canyon-700);
}
.page-faq .faq-zone__card h3 {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--desert-gold);
}
.page-faq .faq-zone__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--rock-grey);
}
.page-faq .faq-zone__more {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  margin: 26px 0 0;
}
.page-faq .faq-zone__more .meta-link {
  font-size: 14px;
  color: var(--volt-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--volt-cyan);
}
.page-faq .faq-zone__more .meta-link:hover,
.page-faq .faq-zone__more .meta-link:focus-visible {
  color: var(--desert-gold);
  border-bottom-color: var(--desert-gold);
}

/* ---------- 08 提交反馈所需信息 ---------- */
.page-faq .faq-need {
  display: grid;
  gap: 1px;
  margin: 0 0 28px;
  padding: 0;
  list-style: none;
  border: var(--faq-hair);
  background: var(--line-blue);
}
@media (min-width: 860px) {
  .page-faq .faq-need {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
.page-faq .faq-need li {
  display: grid;
  gap: 8px;
  padding: 22px 20px;
  background: var(--canyon-800);
}
.page-faq .faq-need__k {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--desert-gold);
}
.page-faq .faq-need__v {
  font-size: 15px;
  line-height: 1.75;
  color: var(--sand-white);
}
.page-faq .faq-need__cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  margin: 0;
}
.page-faq .faq-need__hint {
  max-width: 40em;
  font-size: 14px;
  line-height: 1.75;
  color: var(--rock-grey);
}
.page-faq .faq-need__hint a {
  color: var(--volt-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--volt-cyan);
}
.page-faq .faq-need__hint a:hover,
.page-faq .faq-need__hint a:focus-visible {
  color: var(--desert-gold);
  border-bottom-color: var(--desert-gold);
}

/* ---------- 键盘焦点统一 ---------- */
.page-faq a:focus-visible,
.page-faq summary:focus-visible,
.page-faq .archive-card:focus-visible,
.page-faq label:focus-visible {
  outline: 2px solid var(--volt-cyan);
  outline-offset: 2px;
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}
</main>