.page-faq {
  background: var(--paper-50);
  color: var(--espresso-950);
  font-family: var(--font-body);
  line-height: 1.75;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink-900);
  color: var(--mint-100);
  padding: var(--sp-7) 0 var(--sp-8);
  border-bottom: 1px solid rgba(221, 235, 227, .14);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -22%;
  right: -16%;
  width: min(660px, 82vw);
  height: 152%;
  background: linear-gradient(150deg, var(--ink-700), var(--ink-900));
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%);
  opacity: .88;
  pointer-events: none;
}

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

.page-faq .crumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--slate-400);
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  align-items: center;
}

.page-faq .crumb a {
  color: var(--mint-100);
  text-decoration: none;
  border-bottom: 1px solid rgba(221, 235, 227, .3);
}

.page-faq .crumb a:hover,
.page-faq .crumb a:focus-visible {
  border-bottom-color: var(--orange-500);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-5);
  margin-top: var(--sp-6);
}

.page-faq .faq-hero .index-tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--orange-500);
  text-transform: uppercase;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 7.4vw, 4rem);
  line-height: 1.04;
  letter-spacing: .01em;
  color: var(--paper-50);
  margin: var(--sp-3) 0 0;
}

.page-faq .faq-hero__deck {
  font-size: 1.0625rem;
  line-height: 1.82;
  color: rgba(221, 235, 227, .84);
  border-left: 3px solid var(--orange-500);
  padding-left: var(--sp-4);
}

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

/* 四步流程 */
.page-faq .faq-flow {
  margin-top: var(--sp-7);
  border-top: 1px solid rgba(221, 235, 227, .18);
  padding-top: var(--sp-5);
}

.page-faq .faq-flow__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--slate-400);
  margin: 0 0 var(--sp-4);
}

.page-faq .faq-flow__track {
  display: flex;
  align-items: stretch;
  gap: var(--sp-2);
  overflow-x: auto;
  padding-bottom: var(--sp-3);
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-step {
  flex: 0 0 auto;
  width: 208px;
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: var(--sp-4);
  border: 1px solid rgba(221, 235, 227, .24);
  background: rgba(11, 43, 34, .58);
  color: var(--mint-100);
  text-decoration: none;
  transition: border-color .24s var(--ease-out), background-color .24s var(--ease-out), transform .24s var(--ease-out);
}

.page-faq .faq-step:hover,
.page-faq .faq-step:focus-visible {
  border-color: var(--orange-500);
  background: rgba(242, 96, 31, .14);
  transform: translateY(-2px);
}

.page-faq .faq-step__num {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--orange-500);
}

.page-faq .faq-step__name {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper-50);
}

.page-faq .faq-step__hint {
  font-size: 13px;
  line-height: 1.62;
  color: rgba(221, 235, 227, .66);
}

.page-faq .faq-flow__arrow {
  flex: 0 0 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange-500);
}

/* ---------- 章节通用 ---------- */
.page-faq .faq-sec {
  padding: var(--sp-8) 0;
}

.page-faq .faq-sec--paper {
  background: var(--paper-50);
}

.page-faq .faq-sec--ink {
  background: var(--ink-900);
  color: var(--mint-100);
}

.page-faq .faq-sec__head {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-3);
  border-top: 3px solid var(--ink-900);
  padding-top: var(--sp-4);
  margin-bottom: var(--sp-6);
}

.page-faq .faq-sec--ink .faq-sec__head {
  border-top-color: var(--orange-500);
}

.page-faq .faq-sec__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--orange-500);
  margin-bottom: var(--sp-2);
}

.page-faq .faq-sec__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 4.2vw, 2.3rem);
  line-height: 1.16;
  letter-spacing: .01em;
  margin: 0;
}

.page-faq .faq-sec--ink .faq-sec__title {
  color: var(--paper-50);
}

.page-faq .faq-sec__intro {
  margin: 0;
  font-size: 1rem;
  line-height: 1.82;
  color: rgba(35, 24, 15, .78);
  max-width: 54ch;
}

.page-faq .faq-sec--ink .faq-sec__intro {
  color: rgba(221, 235, 227, .78);
}

/* ---------- 三项指标 ---------- */
.page-faq .faq-metrics__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-6);
}

.page-faq .faq-shot {
  margin: 0;
  overflow: hidden;
  background: var(--mint-100);
  aspect-ratio: 3 / 2;
}

.page-faq .faq-shot img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.72) contrast(1.04);
}

.page-faq .faq-seg {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-bottom: var(--sp-5);
}

.page-faq .faq-seg__btn {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: 8px 14px;
  border: 1px solid rgba(35, 24, 15, .26);
  background: transparent;
  color: var(--espresso-950);
  cursor: pointer;
  transition: background-color .2s var(--ease-out), border-color .2s var(--ease-out), color .2s var(--ease-out);
}

.page-faq .faq-seg__btn:hover {
  border-color: var(--ink-900);
}

.page-faq .faq-seg__btn:focus-visible {
  outline: 2px solid var(--orange-500);
  outline-offset: 2px;
}

.page-faq .faq-seg__btn[aria-pressed="true"] {
  background: var(--ink-900);
  border-color: var(--ink-900);
  color: var(--volt-400);
}

.page-faq .faq-cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
}

.page-faq .faq-col {
  position: relative;
  background: rgba(255, 255, 255, .72);
  border: var(--rule-light);
  padding-bottom: var(--sp-4);
}

.page-faq .faq-col[data-tags="tackle"] {
  --col-accent: var(--ink-500);
}

.page-faq .faq-col[data-tags="control"] {
  --col-accent: var(--slate-400);
}

.page-faq .faq-col[data-tags="shot"] {
  --col-accent: var(--orange-500);
}

.page-faq .faq-col__band {
  height: 6px;
  background: var(--col-accent, var(--ink-500));
  margin-bottom: var(--sp-4);
}

.page-faq .faq-col__inner {
  padding: 0 var(--sp-4);
}

.page-faq .faq-col__code {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--lead-500);
}

.page-faq .faq-col__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.4rem;
  line-height: 1.2;
  margin: var(--sp-2) 0 var(--sp-4);
}

.page-faq .faq-col__item {
  margin-bottom: var(--sp-3);
}

.page-faq .faq-col__key {
  display: block;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--lead-500);
  margin-bottom: 4px;
}

.page-faq .faq-col__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(35, 24, 15, .86);
}

.page-faq [data-filter-item][hidden] {
  display: none !important;
}

/* ---------- 筛选与对比 ---------- */
.page-faq .faq-filter__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-6);
}

.page-faq .faq-tips {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--sp-4);
}

.page-faq .faq-tips li {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: var(--sp-3);
  padding-bottom: var(--sp-4);
  border-bottom: 1px solid rgba(221, 235, 227, .14);
}

.page-faq .faq-tips li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-tips__no {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--amber-300);
}

.page-faq .faq-tips__t {
  margin: 0 0 4px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper-50);
}

.page-faq .faq-tips__d {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(221, 235, 227, .76);
}

.page-faq .faq-table-wrap {
  overflow-x: auto;
  border: 1px solid rgba(221, 235, 227, .2);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 14.5px;
}

.page-faq .faq-table caption {
  text-align: left;
  padding: var(--sp-3) var(--sp-4);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--slate-400);
  border-bottom: 1px solid rgba(221, 235, 227, .2);
}

.page-faq .faq-table th {
  text-align: left;
  padding: var(--sp-3) var(--sp-4);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--amber-300);
  background: rgba(18, 70, 57, .62);
  white-space: nowrap;
}

.page-faq .faq-table td {
  padding: var(--sp-3) var(--sp-4);
  border-bottom: 1px solid rgba(221, 235, 227, .12);
  color: rgba(221, 235, 227, .84);
  vertical-align: top;
  line-height: 1.66;
}

.page-faq .faq-table tbody tr:nth-child(even) td {
  background: rgba(221, 235, 227, .045);
}

.page-faq .faq-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .faq-table tbody td:first-child {
  border-left: 3px solid transparent;
  color: var(--paper-50);
  font-weight: 500;
  transition: border-color .2s var(--ease-out);
}

.page-faq .faq-table tbody tr:hover td:first-child,
.page-faq .faq-table tbody tr:focus-within td:first-child {
  border-left-color: var(--orange-500);
}

/* ---------- 导出与术语 ---------- */
.page-faq .faq-export__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-6);
}

.page-faq .faq-spec {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--sp-4);
}

.page-faq .faq-spec li {
  border-top: var(--rule-light);
  padding-top: var(--sp-3);
}

.page-faq .faq-spec__k {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--orange-500);
  margin-bottom: 6px;
}

.page-faq .faq-spec__v {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(35, 24, 15, .84);
}

.page-faq .faq-spec__v .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--ink-900);
}

.page-faq .faq-gloss {
  background: var(--mint-100);
  border: var(--rule-light);
  padding: var(--sp-5);
  align-self: start;
}

.page-faq .faq-gloss__big {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(2.4rem, 8vw, 3.4rem);
  line-height: 1;
  font-weight: 700;
  color: var(--ink-900);
}

.page-faq .faq-gloss__cap {
  margin: var(--sp-2) 0 var(--sp-4);
  font-size: 13px;
  line-height: 1.7;
  color: var(--lead-500);
}

.page-faq .faq-gloss__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--sp-2);
}

.page-faq .faq-gloss__list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--sp-3);
  padding-bottom: 6px;
  border-bottom: var(--rule-light);
}

.page-faq .faq-gloss__term {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--ink-700);
}

.page-faq .faq-gloss__def {
  font-size: 13.5px;
  color: rgba(35, 24, 15, .74);
  text-align: right;
}

.page-faq .faq-export__figure {
  margin: var(--sp-6) 0 0;
}

.page-faq .faq-export__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.78);
}

/* ---------- 常见疑问 ---------- */
.page-faq .faq-qa {
  background: var(--mint-100);
}

.page-faq .faq-qa__list {
  display: grid;
  gap: var(--sp-3);
}

.page-faq .faq-q {
  background: rgba(255, 255, 255, .74);
  border: var(--rule-light);
  transition: box-shadow .2s var(--ease-out);
}

.page-faq .faq-q[open] {
  box-shadow: inset 3px 0 0 var(--orange-500);
}

.page-faq .faq-q summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px var(--sp-3);
  padding: var(--sp-4);
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--espresso-950);
}

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

.page-faq .faq-q summary:focus-visible {
  outline: 2px solid var(--orange-500);
  outline-offset: -2px;
}

.page-faq .faq-q summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--ink-500);
}

.page-faq .faq-q[open] summary::after {
  content: "–";
  color: var(--orange-500);
}

.page-faq .faq-q__tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--lead-500);
  border: 1px solid rgba(35, 24, 15, .2);
  padding: 2px 7px;
  white-space: nowrap;
}

.page-faq .faq-q__body {
  margin: 0;
  padding: 0 var(--sp-4) var(--sp-4);
  font-size: 14.5px;
  line-height: 1.82;
  color: rgba(35, 24, 15, .82);
  max-width: 68ch;
}

/* ---------- 下一步 ---------- */
.page-faq .faq-next {
  background: var(--ink-900);
  color: var(--mint-100);
  padding: var(--sp-7) 0 var(--sp-8);
}

.page-faq .faq-next__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.3rem, 3.6vw, 1.9rem);
  line-height: 1.2;
  color: var(--paper-50);
  margin: 0 0 var(--sp-5);
  padding-top: var(--sp-4);
  border-top: 3px solid var(--orange-500);
}

.page-faq .faq-next__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-3);
}

.page-faq .faq-next__card {
  display: block;
  padding: var(--sp-4);
  border: 1px solid rgba(221, 235, 227, .22);
  text-decoration: none;
  color: var(--mint-100);
  transition: border-color .22s var(--ease-out), background-color .22s var(--ease-out);
}

.page-faq .faq-next__card:hover,
.page-faq .faq-next__card:focus-visible {
  border-color: var(--amber-300);
  background: rgba(242, 96, 31, .12);
}

.page-faq .faq-next__card-title {
  display: block;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--paper-50);
}

.page-faq .faq-next__card-desc {
  display: block;
  font-size: 13px;
  line-height: 1.68;
  color: rgba(221, 235, 227, .68);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-cols {
    grid-template-columns: repeat(3, 1fr);
    align-items: stretch;
  }

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

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: var(--sp-8) 0 var(--sp-9);
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: var(--sp-7);
    align-items: end;
    margin-top: var(--sp-7);
  }

  .page-faq .faq-hero__deck {
    padding-bottom: 6px;
  }

  .page-faq .faq-flow__track {
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-step {
    flex: 1 1 0;
    width: auto;
  }

  .page-faq .faq-sec {
    padding: var(--sp-9) 0;
  }

  .page-faq .faq-sec__head {
    grid-template-columns: 5fr 7fr;
    gap: var(--sp-7);
    align-items: start;
    margin-bottom: var(--sp-7);
  }

  .page-faq .faq-metrics__grid {
    grid-template-columns: 4fr 8fr;
    gap: var(--sp-7);
    align-items: start;
  }

  .page-faq .faq-filter__grid {
    grid-template-columns: 5fr 7fr;
    gap: var(--sp-7);
    align-items: start;
  }

  .page-faq .faq-export__grid {
    grid-template-columns: 7fr 5fr;
    gap: var(--sp-7);
    align-items: start;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-next__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-step,
  .page-faq .faq-next__card,
  .page-faq .faq-seg__btn,
  .page-faq .faq-q,
  .page-faq .faq-table tbody td:first-child {
    transition: none;
  }

  .page-faq .faq-step:hover,
  .page-faq .faq-step:focus-visible {
    transform: none;
  }
}