/* ===== 使用教程页 ===== */

.page-faq section[id],
.page-faq li[id] {
  scroll-margin-top: 128px;
}

/* --- 首屏 --- */
.page-faq .tut-hero {
  position: relative;
  padding: clamp(40px, 7vw, 88px) 0 clamp(28px, 4.5vw, 52px);
}

.page-faq .tut-hero::after {
  content: "";
  position: absolute;
  left: var(--gutter);
  right: var(--gutter);
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--line) 38%, transparent 100%);
}

.page-faq .tut-hero .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-faq .tut-hero .eyebrow {
  display: inline-block;
  color: var(--cyan);
  margin: 0 0 14px;
}

.page-faq .tut-hero h1 {
  margin: 0 0 20px;
  max-width: 19ch;
  font-family: var(--font-display);
  font-size: clamp(29px, 6.4vw, 56px);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .tut-hero .lede {
  max-width: 58ch;
  margin: 0;
  color: var(--muted);
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.85;
}

.page-faq .tut-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

/* --- 步骤条 --- */
.page-faq .step-rail {
  padding: clamp(24px, 3.5vw, 36px) 0 0;
}

.page-faq .step-rail__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: rail;
}

.page-faq .step-rail__item {
  position: relative;
}

.page-faq .step-rail__link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 18px 12px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, rgba(19, 48, 40, 0.9) 0%, rgba(10, 31, 26, 0.5) 100%);
  text-decoration: none;
  transition: border-color 0.24s var(--ease), transform 0.24s var(--ease);
}

.page-faq .step-rail__link:hover,
.page-faq .step-rail__link:focus-visible {
  border-color: var(--cyan);
  transform: translateX(4px);
}

.page-faq .step-rail__num {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-pill);
  background: rgba(61, 242, 206, 0.12);
  border: 1px solid var(--cyan);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
}

.page-faq .step-rail__text {
  color: var(--white);
  font-family: var(--font-label);
  font-size: 14px;
  letter-spacing: 0.08em;
}

/* --- 章节头微调 --- */
.page-faq .chapter {
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-faq .chapter__title {
  color: var(--white);
}

.page-faq .prose {
  max-width: 68ch;
  color: var(--muted);
  line-height: 1.85;
}

/* --- 01 四步 --- */
.page-faq .step-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0 0 clamp(26px, 4vw, 40px);
  padding: 0;
  list-style: none;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--line-soft);
}

.page-faq .step-card {
  position: relative;
  padding: clamp(20px, 3vw, 28px);
  background: var(--ink);
  transition: background 0.28s var(--ease);
}

.page-faq .step-card:hover {
  background: var(--turf);
}

.page-faq .step-card__num {
  display: block;
  margin-bottom: 10px;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-faq .step-card__title {
  margin: 0 0 10px;
  color: var(--white);
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.3;
}

.page-faq .step-card__desc {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .guide-shot {
  margin: 0;
}

.page-faq .guide-shot img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
}

.page-faq .guide-shot .media__caption {
  margin-top: 12px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

/* --- 02 固定入口 --- */
.page-faq .pin-grid {
  gap: clamp(14px, 2.4vw, 22px);
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .pin-card {
  position: relative;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, rgba(19, 48, 40, 0.85) 0%, rgba(10, 31, 26, 0.95) 100%);
}

.page-faq .pin-card:first-child {
  border-top-color: var(--cyan);
}

.page-faq .pin-card:last-child {
  border-top-color: var(--orange);
}

.page-faq .pin-card__tag {
  display: inline-block;
  margin: 0 0 14px;
  color: var(--muted);
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.page-faq .pin-card__title {
  margin: 0 0 12px;
  color: var(--white);
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 600;
  line-height: 1.3;
}

.page-faq .pin-card__desc {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

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

.page-faq .pin-list li {
  position: relative;
  padding-left: 20px;
  color: var(--white);
  font-size: 14px;
  line-height: 1.7;
}

.page-faq .pin-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 9px;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}

/* --- 03 标签切换 --- */
.page-faq .tag-switch {
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .tag-switch .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.page-faq .tag-switch .tabs__btn {
  padding: 10px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--muted);
  font-family: var(--font-label);
  font-size: 14px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: color 0.24s var(--ease), border-color 0.24s var(--ease), background 0.24s var(--ease);
}

.page-faq .tag-switch .tabs__btn:hover {
  color: var(--white);
  border-color: var(--cyan);
}

.page-faq .tag-switch .tabs__btn[aria-selected="true"] {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .tag-switch .tabs__panel {
  padding: clamp(22px, 3.4vw, 34px) 0 6px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .tag-switch .tabs__panel:last-child {
  border-bottom: none;
}

.page-faq .tag-switch__title {
  margin: 0 0 12px;
  color: var(--white);
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.35;
}

.page-faq .tag-switch .tabs__panel p {
  max-width: 66ch;
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}

/* --- 04 控球率 --- */
.page-faq .meter-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 36px);
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .meter-demo {
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--turf);
  margin-bottom: 22px;
}

.page-faq .meter-demo__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.page-faq .meter-demo__row--foot {
  margin: 14px 0 0;
}

.page-faq .meter-demo__team {
  color: var(--muted);
  font-family: var(--font-label);
  font-size: 13px;
  letter-spacing: 0.12em;
}

.page-faq .meter-demo__pct {
  color: var(--white);
  font-family: var(--font-mono);
  font-size: clamp(30px, 5vw, 46px);
  font-weight: 700;
  line-height: 1;
}

.page-faq .meter-demo .meter {
  height: 16px;
  border-radius: var(--radius-pill);
  background: var(--ink-deep);
  overflow: hidden;
  display: flex;
}

.page-faq .meter-demo .meter__fill {
  height: 100%;
  background: var(--cyan);
  transition: width 0.6s var(--ease);
}

.page-faq .meter-demo .meter__fill--alt {
  background: var(--orange);
}

.page-faq .meter-block__side {
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(6, 17, 14, 0.6);
}

.page-faq .meter-block__side-title {
  margin: 0 0 18px;
  color: var(--white);
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 600;
}

.page-faq .reading-list {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 16px;
}

.page-faq .reading-list li {
  padding-left: 16px;
  border-left: 2px solid var(--line);
}

.page-faq .reading-list__key {
  display: block;
  margin-bottom: 6px;
  color: var(--cyan);
  font-family: var(--font-label);
  font-size: 13px;
  letter-spacing: 0.1em;
}

.page-faq .reading-list p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}

.page-faq .meter-block__note {
  margin: 0;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

/* --- 05 旧版入口 --- */
.page-faq .menu-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 36px);
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .menu-block__main .prose:last-child {
  margin-bottom: 0;
}

.page-faq .menu-path {
  margin: 24px 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
}

.page-faq .menu-path__item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 0;
}

.page-faq .menu-path__item::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--line);
}

.page-faq .menu-path__item:first-child::before {
  top: 50%;
}

.page-faq .menu-path__item:last-child::before {
  bottom: 50%;
}

.page-faq .menu-path__step {
  position: relative;
  z-index: 1;
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-pill);
  background: var(--ink);
  border: 1px solid var(--line);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
}

.page-faq .menu-path__item:last-child .menu-path__step {
  border-color: var(--orange);
  color: var(--orange);
}

.page-faq .menu-path__text {
  color: var(--white);
  font-size: 15px;
  line-height: 1.6;
}

.page-faq .menu-block__shot {
  margin: 0;
}

.page-faq .menu-block__shot img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
}

.page-faq .menu-block__shot .media__caption {
  margin-top: 12px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

/* --- 06 反馈 --- */
.page-faq .feedback-grid {
  gap: clamp(14px, 2.4vw, 22px);
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .feedback-card {
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--turf);
}

.page-faq .feedback-card__idx {
  display: block;
  margin-bottom: 12px;
  color: var(--orange);
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
}

.page-faq .feedback-card__title {
  margin: 0 0 10px;
  color: var(--white);
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 600;
}

.page-faq .feedback-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.page-faq .feedback-send {
  margin-top: clamp(22px, 3.4vw, 34px);
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius-md);
  background: rgba(19, 48, 40, 0.6);
}

.page-faq .feedback-send__lead {
  margin: 0 0 8px;
  color: var(--white);
  font-size: 16px;
  line-height: 1.8;
}

.page-faq .feedback-send__mail {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .feedback-send__note {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.page-faq .feedback-send__note a {
  color: var(--muted);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* --- 07 问答 --- */
.page-faq .faq-list {
  margin-top: clamp(18px, 2.6vw, 26px);
  border-top: 1px solid var(--line);
}

.page-faq .fold {
  position: relative;
  padding-left: 18px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .fold::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 10px;
  width: 2px;
  border-radius: 2px;
  background: transparent;
  transition: background 0.24s var(--ease);
}

.page-faq .fold[open]::before {
  background: var(--cyan);
}

.page-faq .fold__q {
  position: relative;
  padding: 20px 40px 20px 0;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .fold__q::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  line-height: 1;
}

.page-faq .fold[open] .fold__q::after {
  content: "−";
}

.page-faq .fold__a {
  padding: 0 24px 20px 0;
}

.page-faq .fold__a p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
}

/* --- 延伸入口 --- */
.page-faq .next-step {
  margin-top: clamp(34px, 5vw, 56px);
  padding: clamp(22px, 3vw, 32px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(61, 242, 206, 0.06) 0%, rgba(10, 31, 26, 0.9) 55%);
}

.page-faq .next-step__title {
  margin: 0 0 16px;
  color: var(--white);
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 600;
}

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

.page-faq .next-step__list a {
  color: var(--cyan);
  font-size: 15px;
  line-height: 1.7;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.24s var(--ease);
}

.page-faq .next-step__list a:hover,
.page-faq .next-step__list a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* --- 响应式 --- */
@media (min-width: 640px) {
  .page-faq .step-cards {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (min-width: 860px) {
  .page-faq .step-rail__list {
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
  }

  .page-faq .step-rail__item {
    padding: 0 10px;
  }

  .page-faq .step-rail__item::after {
    content: "";
    position: absolute;
    right: 0;
    top: 28px;
    width: 20px;
    height: 1px;
    background: var(--line);
  }

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

  .page-faq .step-rail__link {
    justify-content: center;
    padding: 12px 14px;
  }

  .page-faq .step-rail__link:hover,
  .page-faq .step-rail__link:focus-visible {
    transform: translateY(-3px);
  }

  .page-faq .meter-block,
  .page-faq .menu-block {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-faq .tut-hero h1 {
    max-width: 22ch;
  }
}

@media (min-width: 1040px) {
  .page-faq .step-cards {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-faq .feedback-card {
    min-height: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .step-rail__link,
  .page-faq .step-card,
  .page-faq .tag-switch .tabs__btn,
  .page-faq .meter-demo .meter__fill,
  .page-faq .fold::before,
  .page-faq .next-step__list a {
    transition: none;
  }

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