.page-faq {
  --faq-line: rgba(12, 43, 37, .14);
  --faq-line-dark: rgba(246, 247, 242, .18);
  --faq-step-pad: clamp(14px, 3vw, 22px);
  display: block;
  background: var(--paper);
  color: var(--ink);
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  padding: clamp(14px, 3vw, 22px) 0 0;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(14px, 3vw, 26px) 0 clamp(30px, 5vw, 56px);
}

.page-faq .faq-hero-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 54px);
  background: var(--green);
  color: var(--paper);
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 0 100%);
}

.page-faq .faq-hero-panel::after {
  content: "";
  position: absolute;
  right: -18%;
  bottom: -46%;
  width: min(420px, 70%);
  height: 320px;
  background: repeating-linear-gradient(118deg, rgba(255, 210, 38, .16) 0 5px, transparent 5px 22px);
  pointer-events: none;
}

.page-faq .faq-hero-grid,
.page-faq .faq-hero-main,
.page-faq .faq-hero-side {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}

.page-faq .faq-hero h1 {
  margin: 0 0 16px;
  font-family: var(--font-sans);
  font-size: clamp(32px, 8vw, 58px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-faq .faq-lead {
  margin: 0 0 14px;
  max-width: 46ch;
  font-size: clamp(15.5px, 2.4vw, 18px);
  line-height: 1.78;
  color: rgba(246, 247, 242, .84);
}

.page-faq .faq-note {
  margin: 0;
  padding-left: 14px;
  border-left: 3px solid var(--yellow);
  max-width: 44ch;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(246, 247, 242, .66);
}

.page-faq .faq-side-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--yellow);
}

.page-faq .faq-jump {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-faq .faq-jump a {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--faq-line-dark);
  color: var(--paper);
  text-decoration: none;
  transition: border-color .22s var(--ease), background-color .22s var(--ease);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  border-color: var(--yellow);
  background: rgba(255, 210, 38, .09);
}

.page-faq .faq-jump-num {
  font-size: 13px;
  color: var(--yellow);
  letter-spacing: .04em;
}

.page-faq .faq-jump-label {
  display: block;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}

.page-faq .faq-jump-note {
  display: block;
  margin-top: 3px;
  font-size: 12.5px;
  font-weight: 400;
  color: rgba(246, 247, 242, .6);
}

/* ---------- 章节骨架 ---------- */
.page-faq .faq-section {
  padding: clamp(36px, 6vw, 74px) 0;
  scroll-margin-top: 96px;
}

.page-faq .faq-section--paper { background: var(--paper); }
.page-faq .faq-section--ice { background: var(--ice-2); }
.page-faq .faq-section--dark {
  background: var(--green);
  color: var(--paper);
}

.page-faq .section-head {
  display: grid;
  gap: 8px 20px;
  margin-bottom: clamp(22px, 4vw, 36px);
}

.page-faq .section-title {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(23px, 4.4vw, 38px);
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -.01em;
  color: var(--green);
}

.page-faq .section-kicker {
  margin: 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-faq .faq-section--dark .section-title { color: var(--paper); }
.page-faq .faq-section--dark .section-kicker { color: rgba(246, 247, 242, .72); }
.page-faq .faq-section--dark .coord { color: var(--yellow); }

@media (min-width: 820px) {
  .page-faq .section-head {
    grid-template-columns: 62px minmax(0, 1fr);
    align-items: start;
  }
  .page-faq .section-head .coord {
    grid-column: 1;
    grid-row: 1 / span 2;
    padding-top: 6px;
    border-top: 3px solid var(--yellow);
    display: inline-block;
  }
  .page-faq .section-head .section-title { grid-column: 2; grid-row: 1; }
  .page-faq .section-head .section-kicker { grid-column: 2; grid-row: 2; }
}

/* ---------- 步骤时间线 ---------- */
.page-faq .steps {
  display: grid;
  gap: 12px;
  position: relative;
}

.page-faq .step {
  background: #fff;
  border: 1px solid var(--faq-line);
  border-left: 3px solid var(--warm);
  transition: border-color .22s var(--ease), box-shadow .22s var(--ease);
}

.page-faq .step[open] {
  border-left-color: var(--yellow);
  box-shadow: var(--shadow-1);
}

.page-faq .step-sum {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  align-items: center;
  gap: 14px;
  padding: 15px var(--faq-step-pad);
  cursor: pointer;
  list-style: none;
}

.page-faq .step-sum::-webkit-details-marker { display: none; }
.page-faq .step-sum::marker { content: ""; }

.page-faq .step-sum:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: -2px;
}

.page-faq .step-num {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: var(--pill);
  background: var(--green);
  color: var(--paper);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .02em;
  transition: background-color .22s var(--ease), color .22s var(--ease);
}

.page-faq .step[open] .step-num {
  background: var(--yellow);
  color: var(--green);
}

.page-faq .step-text { display: grid; gap: 3px; min-width: 0; }

.page-faq .step-title {
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--green);
}

.page-faq .step-hint {
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink);
  opacity: .72;
}

.page-faq .step-body {
  padding: 2px var(--faq-step-pad) 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-faq .step-body p { margin: 0 0 10px; }
.page-faq .step-body p:last-child { margin-bottom: 0; }

.page-faq .step-body a {
  color: var(--green);
  text-decoration: none;
  border-bottom: 2px solid var(--yellow);
}

.page-faq .step-body a:hover { border-bottom-color: var(--ice); }

/* ---------- 分栏与图 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(24px, 4vw, 36px);
}

.page-faq .faq-split {
  display: grid;
  gap: clamp(22px, 4vw, 34px);
}

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

.page-faq .media-frame {
  border: 1px solid var(--faq-line);
  background: #fff;
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
}

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

.page-faq .media-caption {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.68;
  color: var(--ink);
  opacity: .74;
}

/* ---------- 新旧设备对比 ---------- */
.page-faq .device-compare {
  display: grid;
  gap: 12px;
  padding: clamp(18px, 3vw, 26px);
  background: #fff;
  border: 1px solid var(--faq-line);
  border-top: 4px solid var(--ice);
}

.page-faq .device-caption {
  margin: 0;
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: .06em;
  color: var(--green);
}

.page-faq .device-block { display: grid; gap: 8px; }

.page-faq .device-key {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--ink);
  opacity: .68;
}

.page-faq .device-split {
  display: grid;
  gap: 10px;
}

.page-faq .device-val {
  margin: 0;
  padding: 12px 14px;
  background: var(--paper);
  border-left: 3px solid var(--warm);
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--ink);
}

.page-faq .device-val--new {
  border-left-color: var(--ice);
  background: rgba(127, 216, 234, .12);
}

.page-faq .device-tag {
  display: inline-block;
  margin-bottom: 6px;
  padding: 2px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--green);
  border: 1px solid var(--warm);
}

.page-faq .device-val--new .device-tag {
  border-color: var(--ice);
  background: rgba(127, 216, 234, .28);
}

/* ---------- 栏目定位 ---------- */
.page-faq .lookup-wrap { display: grid; gap: 14px; align-content: start; }

.page-faq .lookup-intro {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

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

.page-faq .lookup-item {
  display: grid;
  gap: 8px;
  padding: 15px 16px;
  background: #fff;
  border: 1px solid var(--faq-line);
  transition: border-color .22s var(--ease), transform .22s var(--ease);
}

.page-faq .lookup-item:hover {
  border-color: var(--yellow);
  transform: translateY(-2px);
}

.page-faq .lookup-need {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--green);
}

.page-faq .lookup-item p + p { margin: 0; }

.page-faq .lookup-link {
  display: inline-block;
  font-size: 14px;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--yellow);
  padding-bottom: 2px;
  transition: border-color .22s var(--ease), color .22s var(--ease);
}

.page-faq .lookup-link:hover {
  color: var(--green);
  border-bottom-color: var(--ice);
}

/* ---------- 提示状态 ---------- */
.page-faq .state-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .state-card {
  display: grid;
  gap: 10px;
  padding: 20px;
  background: var(--green-2);
  border: 1px solid var(--faq-line-dark);
  transition: border-color .22s var(--ease), transform .22s var(--ease);
}

.page-faq .state-card:hover {
  border-color: var(--yellow);
  transform: translateY(-2px);
}

.page-faq .state-swatch {
  display: block;
  width: 46px;
  height: 6px;
}

.page-faq .state-swatch--run { background: var(--yellow); }
.page-faq .state-swatch--done { background: var(--ice); }

.page-faq .state-card h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--paper);
}

.page-faq .state-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(246, 247, 242, .78);
}

/* ---------- 联系我们区 ---------- */
.page-faq .help-card {
  display: grid;
  gap: clamp(20px, 3vw, 28px);
  padding: clamp(22px, 4vw, 34px);
  background: var(--paper);
  border: 1px solid var(--faq-line);
  border-left: 5px solid var(--yellow);
}

.page-faq .help-grid {
  display: grid;
  gap: 20px;
}

.page-faq .help-item { display: grid; gap: 7px; }

.page-faq .help-key {
  margin: 0;
  font-size: 12.5px;
  font-family: var(--font-mono);
  letter-spacing: .09em;
  color: var(--green);
}

.page-faq .help-val {
  margin: 0;
  font-size: clamp(15px, 2.8vw, 20px);
  line-height: 1.4;
  color: var(--green);
  word-break: break-all;
}

.page-faq .help-note {
  margin: 0;
  max-width: 48ch;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ink);
}

.page-faq .help-foot {
  display: grid;
  gap: 14px;
  padding-top: clamp(16px, 3vw, 22px);
  border-top: 1px solid var(--warm);
}

.page-faq .help-foot-text {
  margin: 0;
  max-width: 56ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink);
}

.page-faq .help-foot-text a {
  color: var(--green);
  text-decoration: none;
  border-bottom: 2px solid var(--yellow);
}

.page-faq .help-foot-text a:hover { border-bottom-color: var(--ice); }

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

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .device-split { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 720px) {
  .page-faq .state-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-faq .help-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, .95fr);
    align-items: start;
  }
}

@media (min-width: 940px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: start;
  }
  .page-faq .faq-split--rev {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  }
  .page-faq .faq-split > .faq-figure { position: sticky; top: 96px; }
}

@media (max-width: 560px) {
  .page-faq .faq-hero-panel { clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%); }
  .page-faq .step-sum { grid-template-columns: 32px minmax(0, 1fr); gap: 11px; }
  .page-faq .step-num { width: 30px; height: 30px; font-size: 12px; }
  .page-faq .media-frame { clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%); }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .step,
  .page-faq .step-num,
  .page-faq .faq-jump a,
  .page-faq .lookup-item,
  .page-faq .state-card,
  .page-faq .lookup-link {
    transition: none;
  }
  .page-faq .lookup-item:hover,
  .page-faq .state-card:hover { transform: none; }
}