/* ============================================================
   使用教程 /tutorial/  —— 页面专属样式
   作用域：.page-faq
   ============================================================ */

.page-faq {
  --faq-gap: clamp(14px, 2.4vw, 22px);
  --faq-pad: clamp(18px, 3vw, 28px);
  position: relative;
  display: block;
  background-color: var(--ink-950);
  color: var(--text-hi);
  font-family: var(--font-body);
}

.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 56px) 0 clamp(34px, 6vw, 64px);
  border-bottom: 1px solid var(--grid-600);
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(79, 134, 198, 0.16), transparent 62%),
    radial-gradient(80% 70% at 4% 110%, rgba(255, 90, 43, 0.10), transparent 60%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(38, 52, 64, 0.55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(38, 52, 64, 0.55) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(120% 90% at 76% 6%, #000 0%, transparent 74%);
  mask-image: radial-gradient(120% 90% at 76% 6%, #000 0%, transparent 74%);
}

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

.page-faq .breadcrumbs {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-faq .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--text-mid);
}

.page-faq .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: 8px;
  color: var(--grid-600);
}

.page-faq .breadcrumb-item a {
  color: var(--text-mid);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.page-faq .breadcrumb-item a:hover {
  color: var(--signal-soft);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
  align-items: end;
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--signal);
  text-transform: uppercase;
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 300;
  font-stretch: condensed;
  font-size: clamp(2rem, 8.4vw, 3.6rem);
  line-height: 1.06;
  letter-spacing: 0.02em;
  color: var(--text-hi);
}

.page-faq .faq-hero__text {
  margin: 0 0 clamp(22px, 3vw, 32px);
  max-width: 60ch;
  font-size: clamp(0.94rem, 1.6vw, 1.02rem);
  line-height: 1.8;
  color: var(--text-mid);
}

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

.page-faq .faq-hero__panel {
  padding: clamp(18px, 2.6vw, 24px);
  border-radius: var(--radius);
  border: 1px solid var(--glass-line);
  border-top-color: var(--glass-hi);
}

.page-faq .faq-hero__panel-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--text-mid);
  text-transform: uppercase;
}

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

.page-faq .faq-toc__link {
  display: grid;
  grid-template-columns: 34px 1fr;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  border-left: 2px solid transparent;
  color: var(--text-hi);
  font-size: 0.88rem;
  line-height: 1.5;
  text-decoration: none;
  transition: background 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  background: rgba(79, 134, 198, 0.14);
  border-left-color: var(--signal);
}

.page-faq .faq-toc__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text-mid);
}

/* ---------- 章节画板 ---------- */

.page-faq .faq-section {
  position: relative;
  padding: clamp(42px, 7vw, 88px) 0;
  border-bottom: 1px solid rgba(38, 52, 64, 0.55);
}

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

.page-faq .section-head {
  margin-bottom: clamp(22px, 3.4vw, 38px);
  max-width: 76ch;
}

.page-faq .section-index {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--signal);
}

.page-faq .section-title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 300;
  font-stretch: condensed;
  font-size: clamp(1.55rem, 4.6vw, 2.4rem);
  line-height: 1.16;
  letter-spacing: 0.02em;
  color: var(--text-hi);
}

.page-faq .section-lead {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--text-mid);
}

/* ---------- 图片容器 ---------- */

.page-faq .faq-figure {
  position: relative;
  margin: 0 0 clamp(22px, 3vw, 34px);
  border: 1px solid var(--grid-600);
  border-radius: var(--radius);
  background: var(--ink-850);
  overflow: hidden;
}

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

.page-faq .faq-figure__tags {
  position: absolute;
  top: 12px;
  right: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: flex-end;
  max-width: 78%;
}

.page-faq .faq-figure__tags span {
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--glass-line);
  background: rgba(6, 9, 13, 0.74);
  color: var(--text-hi);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

.page-faq .faq-figure__caption {
  padding: 12px 16px;
  border-top: 1px solid var(--grid-600);
  font-size: 0.79rem;
  line-height: 1.7;
  color: var(--text-mid);
}

/* ---------- 三条入口 ---------- */

.page-faq .faq-entry-grid {
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
}

.page-faq .faq-entry {
  position: relative;
  padding: var(--faq-pad);
  border: 1px solid var(--grid-600);
  border-radius: var(--radius);
  background: var(--ink-850);
  transition: transform 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-faq .faq-entry:nth-child(1) {
  box-shadow: inset 0 2px 0 0 var(--signal);
}

.page-faq .faq-entry:nth-child(2) {
  box-shadow: inset 0 2px 0 0 var(--plateau);
}

.page-faq .faq-entry:nth-child(3) {
  box-shadow: inset 0 2px 0 0 var(--teal);
}

.page-faq .faq-entry:hover {
  transform: translateY(-2px);
  border-color: var(--signal);
}

.page-faq .faq-entry__num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--text-mid);
}

.page-faq .faq-entry__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.22rem;
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: var(--text-hi);
}

.page-faq .faq-entry__desc {
  margin: 0 0 16px;
  font-size: 0.88rem;
  line-height: 1.78;
  color: var(--text-mid);
}

.page-faq .faq-entry__link {
  display: inline-block;
  font-size: 0.84rem;
  letter-spacing: 0.06em;
  color: var(--signal-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-entry__link:hover {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

/* ---------- 步骤卡 ---------- */

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 16px;
  padding: var(--faq-pad);
  border: 1px solid var(--grid-600);
  border-left: 3px solid var(--grid-600);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(19, 28, 37, 0.94), rgba(14, 21, 28, 0.98));
  transition: border-color 0.24s var(--ease);
}

.page-faq .faq-step:hover {
  border-left-color: var(--signal);
}

.page-faq .faq-steps > .faq-step:first-child {
  border-left-color: var(--signal);
}

.page-faq .faq-step__num {
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 3.4vw, 1.7rem);
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--signal);
  padding-top: 2px;
}

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

.page-faq .faq-step__phase {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--plateau);
}

.page-faq .faq-step__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.16rem;
  line-height: 1.35;
  letter-spacing: 0.02em;
  color: var(--text-hi);
}

.page-faq .faq-step__desc {
  margin: 0;
  font-size: 0.87rem;
  line-height: 1.78;
  color: var(--text-mid);
}

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

.page-faq .faq-points li {
  position: relative;
  padding-left: 18px;
  font-size: 0.87rem;
  line-height: 1.78;
  color: var(--text-mid);
}

.page-faq .faq-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 1px;
  background: var(--plateau);
}

/* ---------- 面板章节两栏 ---------- */

.page-faq .faq-panel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.2vw, 34px);
  align-items: start;
}

.page-faq .faq-figure--panel {
  margin-bottom: 0;
}

/* ---------- 球员筛选 ---------- */

.page-faq .faq-filter {
  display: grid;
  gap: clamp(18px, 2.8vw, 26px);
}

.page-faq .faq-filter__block {
  padding: var(--faq-pad);
  border: 1px solid var(--grid-600);
  border-radius: var(--radius);
  background: var(--ink-850);
}

.page-faq .faq-filter__step {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--signal);
}

.page-faq .faq-filter__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.24rem;
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: var(--text-hi);
}

.page-faq .faq-filter__desc {
  margin: 0 0 16px;
  font-size: 0.88rem;
  line-height: 1.78;
  color: var(--text-mid);
  max-width: 68ch;
}

.page-faq .faq-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-chip-input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  border: 0;
}

.page-faq .faq-chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 15px;
  border: 1px solid var(--grid-600);
  border-radius: 999px;
  background: var(--ink-800);
  color: var(--text-mid);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-chip:hover {
  border-color: var(--signal);
  color: var(--text-hi);
}

.page-faq .faq-chip-input:checked + .faq-chip {
  background: var(--signal);
  border-color: var(--signal);
  color: #0A0E13;
  font-weight: 600;
}

.page-faq .faq-chip-input:focus-visible + .faq-chip {
  outline: 2px solid var(--signal-soft);
  outline-offset: 2px;
}

.page-faq .faq-metrics {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .faq-metric {
  position: relative;
  padding: 18px;
  border: 1px solid var(--grid-600);
  border-radius: var(--radius);
  background: var(--ink-800);
}

.page-faq .faq-metric::before {
  content: "";
  display: block;
  height: 3px;
  margin-bottom: 13px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--teal), var(--amber));
}

.page-faq .faq-metric__name {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--text-hi);
}

.page-faq .faq-metric__desc {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.76;
  color: var(--text-mid);
}

.page-faq .faq-filter__foot {
  display: grid;
  gap: 16px;
  padding: var(--faq-pad);
  border: 1px solid var(--grid-600);
  border-left: 3px solid var(--plateau);
  border-radius: var(--radius);
  background: linear-gradient(120deg, rgba(79, 134, 198, 0.12), rgba(14, 21, 28, 0.96));
}

.page-faq .faq-filter__foot p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.78;
  color: var(--text-mid);
  max-width: 68ch;
}

.page-faq .faq-filter__foot .btn {
  justify-self: start;
}

/* ---------- 折叠问答 ---------- */

.page-faq .faq-list {
  display: grid;
  gap: 10px;
  max-width: 92ch;
}

.page-faq .faq-item {
  border: 1px solid var(--grid-600);
  border-radius: var(--radius);
  background: var(--ink-850);
  overflow: hidden;
  transition: border-color 0.22s var(--ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(255, 90, 43, 0.5);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 0.98rem;
  font-weight: 500;
  line-height: 1.55;
  color: var(--text-hi);
}

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

.page-faq .faq-item__q::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--plateau);
  transition: background 0.2s var(--ease);
}

.page-faq .faq-item[open] .faq-item__q::before {
  background: var(--signal);
}

.page-faq .faq-item__q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--signal);
  transition: transform 0.22s var(--ease);
}

.page-faq .faq-item[open] .faq-item__q::after {
  transform: rotate(45deg);
}

.page-faq .faq-item__a {
  padding: 0 18px 18px 36px;
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 0.87rem;
  line-height: 1.8;
  color: var(--text-mid);
  max-width: 74ch;
}

.page-faq .faq-item__a a {
  color: var(--signal-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item__a a:hover {
  color: var(--signal);
}

/* ---------- 收尾行动带 ---------- */

.page-faq .faq-cta {
  margin-top: clamp(44px, 7vw, 84px);
  border-radius: var(--radius);
  border: 1px solid var(--grid-600);
  background:
    radial-gradient(110% 140% at 92% 0%, rgba(255, 90, 43, 0.18), transparent 58%),
    var(--ink-850);
}

.page-faq .faq-cta .container {
  padding-top: clamp(28px, 4vw, 46px);
  padding-bottom: clamp(28px, 4vw, 46px);
}

.page-faq .faq-cta .cta-band__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 300;
  font-stretch: condensed;
  font-size: clamp(1.5rem, 4.4vw, 2.2rem);
  line-height: 1.16;
  letter-spacing: 0.02em;
  color: var(--text-hi);
}

.page-faq .faq-cta .cta-band__text {
  margin: 0 0 22px;
  max-width: 62ch;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--text-mid);
}

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

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-faq .faq-entry-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-faq .faq-filter__foot {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.86fr);
  }

  .page-faq .faq-steps--flow > .faq-step:nth-child(2) {
    margin-left: 14px;
  }

  .page-faq .faq-steps--flow > .faq-step:nth-child(3) {
    margin-left: 28px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-panel-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.12fr);
  }
}

@media (max-width: 640px) {
  .page-faq .faq-step {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .page-faq .faq-step__num {
    padding-top: 0;
  }

  .page-faq .faq-steps--flow > .faq-step {
    margin-left: 0;
  }

  .page-faq .faq-item__q {
    padding: 15px 14px;
    font-size: 0.93rem;
  }

  .page-faq .faq-item__a {
    padding: 0 14px 16px 32px;
  }

  .page-faq .faq-figure__tags {
    position: static;
    max-width: 100%;
    justify-content: flex-start;
    padding: 10px 12px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-entry,
  .page-faq .faq-step,
  .page-faq .faq-item__q::after,
  .page-faq .faq-toc__link {
    transition: none;
  }

  .page-faq .faq-entry:hover {
    transform: none;
  }
}