/* ===== 使用指南页面 · page-faq ===== */

.page-faq {
  --faq-max-mid: 880px;
  --faq-max-narrow: 620px;
  background: var(--ink);
  color: var(--white);
  font-family: var(--font-sans);
  overflow-x: clip;
}

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

.page-faq .faq-sec--mid .container {
  max-width: var(--faq-max-mid);
}

.page-faq .faq-sec--narrow .container {
  max-width: var(--faq-max-narrow);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: 34px 0 46px;
  border-bottom: 3px solid var(--line);
  background: var(--ink);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -10%;
  right: 0;
  width: 62%;
  height: 120%;
  background: linear-gradient(135deg, rgba(18, 212, 106, 0.16), rgba(47, 168, 255, 0.05) 68%);
  clip-path: polygon(38% 0, 100% 0, 100% 100%, 0 76%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 34%;
  height: 8px;
  background: var(--green);
  pointer-events: none;
}

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

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  margin-top: 20px;
}

.page-faq .faq-hero h1 {
  margin: 12px 0 16px;
  font-size: clamp(28px, 7.2vw, 52px);
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: -0.02em;
  max-width: 15em;
}

.page-faq .faq-hero .lede {
  max-width: 62ch;
  color: var(--white);
  opacity: 0.9;
}

.page-faq .hero-stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 26px 0 0;
  padding: 0;
  border: 3px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-soft);
}

.page-faq .hero-stat {
  padding: 14px 10px 16px;
  border-right: 3px solid var(--line);
  min-width: 0;
}

.page-faq .hero-stat:last-child {
  border-right: 0;
}

.page-faq .hero-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(22px, 5.6vw, 32px);
  font-weight: 700;
  line-height: 1;
  color: var(--neon);
  font-variant-numeric: tabular-nums;
}

.page-faq .hero-stat__unit {
  font-style: normal;
  font-size: 0.42em;
  margin-left: 2px;
  color: var(--white);
}

.page-faq .hero-stat__k {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  line-height: 1.55;
  color: var(--muted);
  letter-spacing: 0.02em;
}

/* ---------- 目录 ---------- */

.page-faq .faq-toc {
  position: relative;
  padding: 16px 14px 18px;
  border: 3px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-toc::before {
  content: "";
  position: absolute;
  top: -3px;
  left: -3px;
  width: 58px;
  height: 6px;
  background: var(--green);
}

.page-faq .faq-toc__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .toc-list a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 8px;
  font-size: 14px;
  color: var(--white);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: background var(--ease), border-color var(--ease), color var(--ease);
}

.page-faq .toc-list a:hover,
.page-faq .toc-list a:focus-visible {
  background: rgba(18, 212, 106, 0.12);
  border-left-color: var(--green);
  color: var(--green);
}

.page-faq .toc-num {
  min-width: 22px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

.page-faq .toc-list a:hover .toc-num,
.page-faq .toc-list a:focus-visible .toc-num {
  color: var(--green);
}

/* ---------- 章节外壳 ---------- */

.page-faq .faq-sec {
  position: relative;
  padding: 48px 0 52px;
  border-bottom: 3px solid var(--line);
}

.page-faq .faq-sec:last-of-type {
  border-bottom: 0;
}

.page-faq .faq-sec--mid {
  background: linear-gradient(90deg, rgba(20, 26, 22, 0.9), var(--ink) 58%);
}

.page-faq .sec-head {
  display: grid;
  gap: 10px;
  margin-bottom: 28px;
  max-width: 64ch;
}

.page-faq .sec-head__top {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}

.page-faq .sec-head h2 {
  margin: 0;
  font-size: clamp(23px, 4.8vw, 36px);
  line-height: 1.18;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.page-faq .sec-head .section-num {
  color: var(--green);
  flex: 0 0 auto;
}

.page-faq .sec-head__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 三步上手 ---------- */

.page-faq .steps-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

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

.page-faq .step {
  position: relative;
  padding: 0 0 28px 52px;
}

.page-faq .step:last-child {
  padding-bottom: 0;
}

.page-faq .step::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 32px;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--green), var(--line));
}

.page-faq .step:last-child::before {
  display: none;
}

.page-faq .step__dot {
  position: absolute;
  left: 0;
  top: 0;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  background: var(--green);
  transform: rotate(45deg);
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.55);
}

.page-faq .step__num {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--ink);
  transform: rotate(-45deg);
}

.page-faq .step__title {
  margin: 2px 0 8px;
  font-size: 19px;
  line-height: 1.4;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-faq .step__text {
  margin: 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--white);
  opacity: 0.86;
}

.page-faq .step__text a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .steps-figure,
.page-faq .desktop-figure {
  margin: 0;
}

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

/* ---------- 问答折叠面板 ---------- */

.page-faq .qa-group {
  display: grid;
  gap: 12px;
}

.page-faq .qa {
  border: 3px solid var(--line);
  background: var(--panel);
  transition: border-color var(--ease), box-shadow var(--ease);
}

.page-faq .qa[open] {
  border-color: var(--green);
  box-shadow: var(--shadow-soft);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 0;
  padding: 15px 14px;
  list-style: none;
  cursor: pointer;
}

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

.page-faq .qa__q::marker {
  content: "";
}

.page-faq .qa__num {
  flex: 0 0 auto;
  min-width: 32px;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--green);
  font-variant-numeric: tabular-nums;
}

.page-faq .qa__title {
  flex: 1 1 auto;
  margin: 0;
  font-size: 16px;
  line-height: 1.55;
  font-weight: 700;
  letter-spacing: -0.005em;
}

.page-faq .qa__mark {
  position: relative;
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
  margin-top: 6px;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--green);
  transition: transform var(--ease), opacity var(--ease);
}

.page-faq .qa__mark::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}

.page-faq .qa__mark::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}

.page-faq .qa[open] .qa__mark::after {
  transform: scaleY(0);
}

.page-faq .qa__a {
  padding: 0 14px 18px;
  border-top: 3px solid var(--line);
  margin-top: -1px;
}

.page-faq .qa[open] .qa__a {
  border-top-color: var(--green);
}

.page-faq .qa__a p {
  margin: 14px 0 0;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.82;
  color: var(--white);
}

.page-faq .qa__a a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .num-inline {
  font-family: var(--font-mono);
  font-size: 1.06em;
  font-weight: 700;
  color: var(--neon);
  font-variant-numeric: tabular-nums;
}

/* ---------- 提示条 ---------- */

.page-faq .hintbar-wrap {
  padding: 22px 0;
  background: var(--ink);
}

.page-faq .hintbar {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  margin: 0;
  padding: 14px 16px;
  border-left: 5px solid var(--neon);
  background: var(--panel);
  font-size: 15px;
  line-height: 1.72;
  color: var(--white);
}

.page-faq .hintbar__tag {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--neon);
}

/* ---------- 查赛程三种方式 ---------- */

.page-faq .filter-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-faq .filter-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 20px 18px 22px;
  border: 3px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-soft);
  transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
}

.page-faq .filter-card::before {
  content: "";
  display: block;
  width: 52px;
  height: 4px;
  background: var(--green);
}

.page-faq .filter-card--blue::before {
  background: var(--blue);
}

.page-faq .filter-card--neon::before {
  background: var(--neon);
}

.page-faq .filter-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hard);
  border-color: var(--green);
}

.page-faq .filter-card--blue:hover {
  border-color: var(--blue);
}

.page-faq .filter-card--neon:hover {
  border-color: var(--neon);
}

.page-faq .filter-card__title {
  margin: 0;
  font-size: 18px;
  line-height: 1.42;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-faq .filter-card__text {
  margin: 0;
  font-size: 16px;
  line-height: 1.76;
  color: var(--white);
  opacity: 0.82;
}

.page-faq .filter-note {
  margin: 24px 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--blue);
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 桌面端说明 ---------- */

.page-faq .desktop-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-faq .desktop-list {
  display: grid;
  border-top: 3px solid var(--line);
}

.page-faq .desktop-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 18px 0;
  border-bottom: 3px solid var(--line);
}

.page-faq .desktop-item__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--green);
}

.page-faq .desktop-item p {
  margin: 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--white);
  opacity: 0.88;
}

/* ---------- 纠错 ---------- */

.page-faq .correct-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .correct-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 18px;
  border: 3px solid var(--line);
  background: var(--panel);
}

.page-faq .correct-card p {
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--white);
  opacity: 0.88;
}

.page-faq .correct-card a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 收束 ---------- */

.page-faq .help-band {
  position: relative;
  padding: 28px 20px 30px;
  border: 3px solid var(--green);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-faq .help-band::after {
  content: "";
  position: absolute;
  right: -3px;
  top: -3px;
  width: 78px;
  height: 78px;
  background: linear-gradient(135deg, transparent 50%, rgba(18, 212, 106, 0.35) 50%);
  pointer-events: none;
}

.page-faq .help-band h2 {
  position: relative;
  z-index: 1;
  margin: 12px 0 14px;
  font-size: clamp(22px, 4.6vw, 30px);
  line-height: 1.22;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.page-faq .help-band p {
  position: relative;
  z-index: 1;
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.82;
  color: var(--white);
  opacity: 0.9;
}

.page-faq .help-band p a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .help-band__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
}

/* ---------- 响应式 ---------- */

@media (min-width: 600px) {
  .page-faq .qa__a {
    padding: 0 18px 20px 66px;
  }

  .page-faq .qa__q {
    padding: 17px 18px;
    gap: 14px;
  }

  .page-faq .qa__num {
    min-width: 40px;
  }

  .page-faq .desktop-item {
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 22px;
    align-items: baseline;
  }
}

@media (min-width: 820px) {
  .page-faq .faq-hero {
    padding: 44px 0 56px;
  }

  .page-faq .faq-sec {
    padding: 62px 0 68px;
  }

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

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

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(290px, 0.7fr);
    gap: 48px;
    align-items: start;
    margin-top: 32px;
  }

  .page-faq .hero-stats {
    max-width: 560px;
  }

  .page-faq .help-band {
    padding: 36px 32px 38px;
  }
}

@media (min-width: 1024px) {
  .page-faq .steps-layout {
    grid-template-columns: minmax(0, 1fr) minmax(300px, 0.72fr);
    gap: 46px;
    align-items: start;
  }

  .page-faq .desktop-layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 44px;
    align-items: start;
  }
}

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

  .page-faq .filter-card:hover {
    transform: none;
  }
}