/* ===== 使用规范页 · /usage/ ===== */

.page-disclaimer {
  background: var(--abyss-900);
  color: var(--mist-200);
  font-family: var(--font-body);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

/* ---------- 首屏 ---------- */
.page-disclaimer .disc-hero {
  position: relative;
  isolation: isolate;
  background:
    radial-gradient(120% 100% at 84% 0%, rgba(20, 69, 107, 0.72), rgba(6, 26, 46, 0) 62%),
    linear-gradient(180deg, var(--abyss-900) 0%, var(--deep-800) 100%);
  padding-top: calc(var(--header-total) + clamp(1.6rem, 4vw, 3rem));
  padding-bottom: clamp(2.75rem, 6vw, 4.5rem);
}

.page-disclaimer .disc-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg,
    rgba(53, 230, 210, 0) 0%,
    rgba(53, 230, 210, 0.38) 28%,
    rgba(53, 230, 210, 0.38) 72%,
    rgba(53, 230, 210, 0) 100%);
}

.page-disclaimer .disc-crumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: clamp(1.35rem, 3vw, 2rem);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--slate-500);
}

.page-disclaimer .disc-crumbs .crumbs-item {
  color: inherit;
  text-decoration: none;
}

.page-disclaimer .disc-crumbs a.crumbs-item {
  transition: color 0.2s var(--ease);
}

.page-disclaimer .disc-crumbs a.crumbs-item:hover,
.page-disclaimer .disc-crumbs a.crumbs-item:focus-visible {
  color: var(--cyan-400);
}

.page-disclaimer .disc-crumb-sep {
  margin: 0 0.55rem;
  color: rgba(124, 147, 168, 0.55);
}

.page-disclaimer .disc-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 3rem);
  align-items: center;
}

.page-disclaimer .disc-hero-copy {
  min-width: 0;
  max-width: 40rem;
}

.page-disclaimer .disc-hero-copy .eyebrow {
  color: var(--cyan-400);
}

.page-disclaimer .disc-hero-copy h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.95rem, 5.2vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: #ffffff;
  margin: 0.8rem 0 1.05rem;
  text-wrap: balance;
}

.page-disclaimer .disc-lede {
  margin: 0;
  font-size: clamp(0.98rem, 1.2vw, 1.06rem);
  line-height: 1.8;
  color: var(--mist-200);
  max-width: 36em;
}

.page-disclaimer .disc-hero-figure {
  margin: 0;
  min-width: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line-cyan);
  box-shadow: var(--shadow-float);
}

.page-disclaimer .disc-hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1000 / 520;
  object-fit: cover;
}

/* ---------- 规则主体 ---------- */
.page-disclaimer .disc-rules {
  padding: clamp(3rem, 6.5vw, 5.5rem) 0 clamp(3.25rem, 7vw, 6rem);
  background: linear-gradient(180deg, var(--deep-800) 0%, var(--abyss-900) 100%);
}

.page-disclaimer .disc-rules-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.9rem, 4vw, 3rem);
  align-items: start;
}

/* 条款索引 */
.page-disclaimer .disc-toc {
  min-width: 0;
}

.page-disclaimer .disc-toc-title {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--slate-500);
}

.page-disclaimer .disc-toc-list {
  display: flex;
  gap: 0.45rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-disclaimer .disc-toc-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  flex: 0 0 auto;
  min-height: 44px;
  padding: 0.5rem 0.95rem;
  border: 1px solid rgba(53, 230, 210, 0.2);
  border-radius: var(--r-pill);
  font-size: 0.84rem;
  line-height: 1.3;
  color: var(--mist-200);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-disclaimer .disc-toc-link:hover,
.page-disclaimer .disc-toc-link:focus-visible {
  color: #ffffff;
  border-color: var(--cyan-400);
  transform: translateX(2px);
}

.page-disclaimer .disc-toc-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--cyan-400);
}

/* 条款列表 */
.page-disclaimer .disc-clauses {
  display: grid;
  gap: clamp(2rem, 4.5vw, 3.4rem);
  min-width: 0;
}

.page-disclaimer .disc-clause {
  display: grid;
  grid-template-columns: clamp(1.9rem, 4vw, 2.7rem) minmax(0, 1fr);
  column-gap: clamp(0.7rem, 1.8vw, 1.5rem);
  border-left: 2px solid rgba(53, 230, 210, 0.4);
  padding-left: clamp(0.9rem, 2.2vw, 1.7rem);
  scroll-margin-top: calc(var(--header-total) + 1.5rem);
}

.page-disclaimer .disc-clause-num {
  font-family: var(--font-mono);
  font-size: clamp(0.72rem, 1.2vw, 0.84rem);
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--cyan-400);
  padding-top: 0.5rem;
}

.page-disclaimer .disc-clause-body {
  min-width: 0;
}

.page-disclaimer .disc-clause h2 {
  margin: 0 0 0.9rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.22rem, 2.2vw, 1.58rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: #ffffff;
}

.page-disclaimer .disc-clause-body p {
  margin: 0 0 1rem;
  font-size: clamp(0.95rem, 1.05vw, 1rem);
  line-height: 1.78;
  color: var(--mist-200);
  max-width: 40em;
}

.page-disclaimer .disc-clause-body p:last-child {
  margin-bottom: 0;
}

.page-disclaimer .disc-list {
  margin: 0 0 1rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.55rem;
  max-width: 40em;
}

.page-disclaimer .disc-list li {
  position: relative;
  padding-left: 1.2rem;
  font-size: clamp(0.93rem, 1vw, 0.98rem);
  line-height: 1.72;
  color: var(--mist-200);
}

.page-disclaimer .disc-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan-400);
}

/* 纸色要点块 */
.page-disclaimer .disc-note {
  margin: 1.4rem 0 0;
  background: var(--paper-100);
  color: var(--ink-900);
  border: 1px solid var(--paper-200);
  border-radius: var(--r-md);
  padding: clamp(1.1rem, 2.4vw, 1.6rem) clamp(1.15rem, 2.6vw, 1.85rem);
}

.page-disclaimer .disc-note-title {
  margin: 0 0 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--tide-700);
}

.page-disclaimer .disc-note-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.7rem;
}

.page-disclaimer .disc-note-steps li {
  display: grid;
  grid-template-columns: 1.9rem minmax(0, 1fr);
  gap: 0.65rem;
  align-items: start;
  font-size: clamp(0.92rem, 1vw, 0.97rem);
  line-height: 1.65;
  color: var(--ink-900);
}

.page-disclaimer .disc-step-num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--tide-700);
  padding-top: 0.2rem;
}

.page-disclaimer .disc-note--stats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.1rem;
}

.page-disclaimer .disc-stat {
  display: grid;
  gap: 0.25rem;
  min-width: 0;
}

.page-disclaimer .disc-stat-num {
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 4vw, 2rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--tide-700);
}

.page-disclaimer .disc-stat-label {
  font-size: 0.82rem;
  line-height: 1.55;
  color: rgba(20, 32, 43, 0.74);
}

/* 联系块 */
.page-disclaimer .disc-contact {
  margin: 1.4rem 0 0;
  padding: clamp(1.1rem, 2.4vw, 1.5rem) clamp(1.15rem, 2.6vw, 1.75rem);
  border: 1px solid var(--line-cyan);
  border-radius: var(--r-md);
  background: rgba(20, 69, 107, 0.34);
}

.page-disclaimer .disc-contact-line {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.6rem;
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: clamp(0.9rem, 1.1vw, 0.98rem);
  line-height: 1.6;
  color: #ffffff;
  word-break: break-word;
}

.page-disclaimer .disc-contact-label {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--slate-500);
}

.page-disclaimer .disc-contact-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.9rem;
}

.page-disclaimer .disc-contact-actions .btn {
  min-height: 44px;
}

.page-disclaimer .copy-receipt {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--cyan-400);
}

/* ---------- 收束区 ---------- */
.page-disclaimer .disc-outro {
  padding: clamp(2.75rem, 6vw, 4.5rem) 0 clamp(3.25rem, 7vw, 5.5rem);
  background: linear-gradient(180deg, var(--abyss-900) 0%, var(--deep-800) 100%);
}

.page-disclaimer .disc-scale {
  height: 22px;
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
  border-bottom: 1px solid rgba(53, 230, 210, 0.28);
  background-image: repeating-linear-gradient(
    to right,
    rgba(53, 230, 210, 0.55) 0 1px,
    rgba(53, 230, 210, 0) 1px 28px
  );
  background-repeat: no-repeat;
  background-size: 100% 8px;
  background-position: bottom left;
}

.page-disclaimer .disc-outro-title {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.3rem, 2.6vw, 1.8rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: #ffffff;
}

.page-disclaimer .disc-outro-text {
  margin: 0 0 1.5rem;
  max-width: 42em;
  font-size: clamp(0.95rem, 1.05vw, 1rem);
  line-height: 1.78;
  color: var(--mist-200);
}

.page-disclaimer .disc-pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.page-disclaimer .disc-pill-row .pill {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-disclaimer .disc-note--stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.4rem;
  }
}

@media (min-width: 960px) {
  .page-disclaimer .disc-hero-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 1fr);
    gap: clamp(2.5rem, 5vw, 4.5rem);
    align-items: end;
  }

  .page-disclaimer .disc-rules-layout {
    grid-template-columns: 214px minmax(0, 1fr);
    gap: clamp(2.5rem, 5vw, 4.75rem);
  }

  .page-disclaimer .disc-toc {
    position: sticky;
    top: calc(var(--header-total) + 1.75rem);
  }

  .page-disclaimer .disc-toc-list {
    flex-direction: column;
    overflow: visible;
    gap: 0.15rem;
    padding-bottom: 0;
  }

  .page-disclaimer .disc-toc-link {
    width: 100%;
    justify-content: flex-start;
    border-color: transparent;
    border-radius: var(--r-sm);
    padding: 0.6rem 0.7rem;
    white-space: normal;
  }

  .page-disclaimer .disc-toc-link:hover,
  .page-disclaimer .disc-toc-link:focus-visible {
    border-color: rgba(53, 230, 210, 0.28);
    background: rgba(20, 69, 107, 0.42);
  }
}

@media (min-width: 1180px) {
  .page-disclaimer .disc-rules-layout {
    grid-template-columns: 240px minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .disc-toc-link,
  .page-disclaimer .disc-crumbs a.crumbs-item {
    transition: none;
  }

  .page-disclaimer .disc-toc-link:hover,
  .page-disclaimer .disc-toc-link:focus-visible {
    transform: none;
  }
}