/* ============================================
   使用指引 /usage/  —— page-disclaimer
   窄栏编号条款 + 侧边目录 + 横向反馈流程图
   ============================================ */

.page-disclaimer {
  --use-col: 660px;
  --use-hero-pad: clamp(18px, 2.6vw, 34px);
}

/* ---------- 页头 ---------- */

.page-disclaimer .use-hero {
  position: relative;
  padding-block: var(--use-hero-pad) clamp(28px, 4.4vw, 54px);
  background:
    radial-gradient(120% 78% at 84% -6%, rgba(0, 229, 192, 0.11), transparent 62%),
    radial-gradient(90% 62% at 4% 108%, rgba(18, 51, 43, 0.72), transparent 72%);
}

.page-disclaimer .use-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.6vw, 40px);
  align-items: center;
}

.page-disclaimer .use-hero__kicker {
  margin: 0 0 14px;
  color: var(--cyan-dim);
  letter-spacing: 0.3em;
}

.page-disclaimer .use-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6.4vw, 74px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-disclaimer .use-hero__lede {
  margin: 18px 0 0;
  max-width: 32em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--body);
}

.page-disclaimer .use-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .use-hero__figure .media-frame {
  box-shadow: var(--shadow-panel);
}

.page-disclaimer .use-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-disclaimer .use-rule {
  margin-top: clamp(26px, 3.6vw, 42px);
  height: 10px;
  background: repeating-linear-gradient(
    115deg,
    var(--line) 0 2px,
    transparent 2px 15px
  );
  opacity: 0.9;
}

/* ---------- 主体：目录 + 条款 ---------- */

.page-disclaimer .use-body {
  padding-bottom: clamp(56px, 9vw, 118px);
}

.page-disclaimer .use-body__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4.4vw, 52px);
}

/* 侧边目录 */

.page-disclaimer .use-toc {
  border-top: 2px solid var(--line);
  padding-top: 16px;
}

.page-disclaimer .use-toc__title {
  margin: 0 0 14px;
  color: var(--muted);
  letter-spacing: 0.3em;
}

.page-disclaimer .use-toc__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-disclaimer .use-toc__link {
  display: block;
  padding: 9px 10px 9px 0;
  font-size: 14px;
  line-height: 1.45;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid var(--line-soft);
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-disclaimer .use-toc__link:hover {
  color: var(--cyan);
  padding-left: 8px;
}

.page-disclaimer .use-toc__link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  color: var(--cyan);
}

/* 条款容器 */

.page-disclaimer .use-clauses {
  max-width: var(--use-col);
  min-width: 0;
}

.page-disclaimer .use-clause {
  scroll-margin-top: 104px;
}

.page-disclaimer .use-clause + .use-clause,
.page-disclaimer .use-clause + .use-callout,
.page-disclaimer .use-callout + .use-clause {
  margin-top: clamp(38px, 5.4vw, 66px);
}

.page-disclaimer .use-clause__head {
  display: flex;
  align-items: baseline;
  gap: clamp(12px, 2vw, 20px);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
  margin-bottom: 20px;
}

.page-disclaimer .use-clause__no {
  flex: none;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(36px, 6vw, 62px);
  line-height: 0.86;
  letter-spacing: -0.03em;
  color: var(--turf);
  -webkit-text-stroke: 1px var(--line);
  filter: drop-shadow(0 0 16px rgba(0, 229, 192, 0.13));
}

.page-disclaimer .use-clause__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.5vw, 26px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

.page-disclaimer .use-clause:target .use-clause__title {
  color: var(--cyan);
}

.page-disclaimer .use-clause .prose {
  margin: 0 0 16px;
  font-size: 16px;
  color: var(--body);
}

.page-disclaimer .use-clause .prose:last-child {
  margin-bottom: 0;
}

.page-disclaimer .use-inline-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-disclaimer .use-inline-link:hover {
  border-bottom-color: var(--cyan);
}

.page-disclaimer .use-inline-link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 引用对照表 ---------- */

.page-disclaimer .use-table-wrap {
  margin-top: 20px;
  overflow-x: auto;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-panel);
}

.page-disclaimer .use-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
}

.page-disclaimer .use-table__cap {
  padding: 12px 18px 0;
  text-align: left;
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--muted);
}

.page-disclaimer .use-table th,
.page-disclaimer .use-table td {
  padding: 15px 18px;
  text-align: left;
  vertical-align: top;
  font-size: 14.5px;
  line-height: 1.7;
  border-bottom: 1px solid var(--line-soft);
}

.page-disclaimer .use-table thead th {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.24em;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
}

.page-disclaimer .use-table tbody th {
  width: 32%;
  font-weight: 700;
  color: var(--paper);
  border-right: 1px solid var(--line-soft);
}

.page-disclaimer .use-table tbody td {
  color: var(--body);
}

.page-disclaimer .use-table tbody tr:last-child th,
.page-disclaimer .use-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-disclaimer .use-table tbody tr {
  transition: background-color var(--dur) var(--ease);
}

.page-disclaimer .use-table tbody tr:hover {
  background-color: rgba(0, 229, 192, 0.045);
}

/* ---------- 等宽数字提示带 ---------- */

.page-disclaimer .use-callout {
  margin-top: clamp(38px, 5.4vw, 66px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  background: linear-gradient(104deg, var(--turf), var(--ink) 82%);
  box-shadow: var(--shadow-panel);
}

.page-disclaimer .use-callout__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(34px, 5.6vw, 52px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--cyan);
}

.page-disclaimer .use-callout__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--body);
}

/* ---------- 集锦边界列表 ---------- */

.page-disclaimer .use-list {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-disclaimer .use-list__item {
  padding: 16px 18px;
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: var(--radius);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-disclaimer .use-list__item:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-disclaimer .use-list__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--cyan-dim);
}

.page-disclaimer .use-list__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--body);
}

/* ---------- 账号说明定义列表 ---------- */

.page-disclaimer .use-deflist {
  margin: 22px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-disclaimer .use-deflist__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-disclaimer .use-deflist dt {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-disclaimer .use-deflist dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--body);
}

/* ---------- 异常反馈流程图 ---------- */

.page-disclaimer .use-flow {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

.page-disclaimer .use-flow__step {
  position: relative;
  padding-left: 28px;
}

.page-disclaimer .use-flow__step::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 16px;
  bottom: -20px;
  width: 1px;
  background: var(--line);
}

.page-disclaimer .use-flow__step:last-child::before {
  display: none;
}

.page-disclaimer .use-flow__dot {
  position: absolute;
  left: 0;
  top: 5px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  border: 1px solid var(--cyan);
  background: var(--ink);
  box-shadow: 0 0 0 3px rgba(0, 229, 192, 0.09);
  transition: background-color var(--dur) var(--ease);
}

.page-disclaimer .use-flow__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--muted);
}

.page-disclaimer .use-flow__title {
  margin: 4px 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-disclaimer .use-flow__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--body);
}

.page-disclaimer .use-flow__step:hover .use-flow__dot {
  background: var(--cyan);
}

/* ---------- 结尾动作 ---------- */

.page-disclaimer .use-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 22px 0 0;
}

/* ---------- 平板及以上 ---------- */

@media (min-width: 720px) {

  .page-disclaimer .use-hero__inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: clamp(28px, 4vw, 54px);
  }

  .page-disclaimer .use-callout {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: clamp(20px, 3vw, 34px);
  }

  .page-disclaimer .use-deflist__row {
    grid-template-columns: 148px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }

  .page-disclaimer .use-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    margin-top: 34px;
  }

  .page-disclaimer .use-flow__step {
    padding: 40px 22px 0 0;
  }

  .page-disclaimer .use-flow__step::before {
    left: 0;
    right: 22px;
    top: 6px;
    bottom: auto;
    width: auto;
    height: 1px;
  }

  .page-disclaimer .use-flow__step:last-child::before {
    right: 0;
    background: linear-gradient(to right, var(--line), transparent);
  }

  .page-disclaimer .use-flow__dot {
    left: 0;
    top: 0;
  }
}

/* ---------- 桌面：侧边目录吸附 ---------- */

@media (min-width: 1000px) {

  .page-disclaimer .use-body__inner {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: clamp(40px, 5vw, 88px);
    align-items: start;
  }

  .page-disclaimer .use-toc {
    position: sticky;
    top: 104px;
  }
}

/* ---------- 无障碍：降低动态 ---------- */

@media (prefers-reduced-motion: reduce) {

  .page-disclaimer .use-toc__link,
  .page-disclaimer .use-list__item,
  .page-disclaimer .use-clause__title,
  .page-disclaimer .use-flow__dot,
  .page-disclaimer .use-table tbody tr,
  .page-disclaimer .use-inline-link {
    transition: none;
  }

  .page-disclaimer .use-list__item:hover {
    transform: none;
  }
}
<<<END>>>