/* ===================== 使用说明页 · page-disclaimer ===================== */

.page-disclaimer {
  color: var(--white-soft);
}

.page-disclaimer .breadcrumbs {
  padding-block: 1.25rem 0.25rem;
}

/* --------------------- 首屏 --------------------- */

.page-disclaimer .disc-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(28px, 5vw, 52px) clamp(30px, 4.5vw, 52px);
  border-bottom: 2px solid var(--ink-500);
}

.page-disclaimer .disc-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 106, 42, 0.07), transparent 72%);
  pointer-events: none;
}

.page-disclaimer .disc-hero::after {
  content: "";
  position: absolute;
  right: -14%;
  top: -44%;
  width: 42vw;
  height: 42vw;
  max-width: 460px;
  max-height: 460px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(95, 179, 161, 0.18), transparent 68%);
  pointer-events: none;
}

.page-disclaimer .disc-hero__inner {
  position: relative;
  z-index: 1;
}

.page-disclaimer .disc-hero .eyebrow {
  margin: 0 0 0.85rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--signal-orange);
}

.page-disclaimer .disc-hero h1 {
  margin: 0 0 0.85rem;
  font-family: var(--display);
  font-size: clamp(2.1rem, 7vw, 3.4rem);
  font-weight: 300;
  line-height: 1.06;
  letter-spacing: 0.04em;
  color: var(--white-soft);
}

.page-disclaimer .disc-hero .lede {
  max-width: 36rem;
  margin: 0;
  font-size: clamp(0.98rem, 1.6vw, 1.06rem);
  line-height: 1.85;
  color: var(--mist-200);
}

.page-disclaimer .disc-hero__meta {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-disclaimer .disc-hero__meta li {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.07em;
  padding: 0.3rem 0.62rem;
  border: 1px solid var(--ink-500);
  color: var(--mist-200);
}

.page-disclaimer .disc-hero__meta li:first-child {
  border-color: var(--signal-orange);
  color: var(--signal-orange);
}

/* --------------------- 主体窄栏 --------------------- */

.page-disclaimer .disc-shell {
  max-width: 40rem;
  margin-inline: auto;
  padding-block: clamp(36px, 5.5vw, 64px) clamp(56px, 8vw, 96px);
}

/* 条款目录 */

.page-disclaimer .disc-toc {
  border: 1px solid var(--ink-500);
  background: var(--ink-700);
  margin-bottom: clamp(32px, 5vw, 52px);
}

.page-disclaimer .disc-toc > summary {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  list-style: none;
  cursor: pointer;
  padding: 0.85rem 1.15rem;
  color: var(--paper-100);
}

.page-disclaimer .disc-toc > summary::-webkit-details-marker {
  display: none;
}

.page-disclaimer .disc-toc__label {
  font-size: 0.74rem;
  letter-spacing: 0.16em;
}

.page-disclaimer .disc-toc__hint {
  margin-left: auto;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--mist-200);
  opacity: 0.7;
}

.page-disclaimer .disc-toc > summary::after {
  content: "+";
  font-family: var(--mono);
  font-size: 1rem;
  line-height: 1;
  color: var(--signal-orange);
}

.page-disclaimer .disc-toc[open] > summary::after {
  content: "–";
}

.page-disclaimer .disc-toc > summary:hover {
  color: var(--white-soft);
}

.page-disclaimer .disc-toc__list {
  list-style: none;
  margin: 0;
  padding: 0.85rem 1.15rem 1.15rem;
  display: grid;
  gap: 0.1rem;
  border-top: 1px solid var(--ink-500);
}

.page-disclaimer .disc-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  padding: 0.42rem 0;
  font-size: 0.93rem;
  color: var(--mist-200);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}

.page-disclaimer .disc-toc__list a:hover {
  color: var(--white-soft);
  border-bottom-color: var(--glow-amber);
}

.page-disclaimer .disc-toc__list .mono {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--celadon);
}

/* 条款 */

.page-disclaimer .disc-body {
  border-top: 1px solid var(--ink-500);
}

.page-disclaimer .disc-clause {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
  padding-block: clamp(30px, 4.5vw, 48px);
  border-bottom: 1px solid var(--ink-500);
}

.page-disclaimer .disc-clause__num {
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  color: var(--signal-orange);
}

.page-disclaimer .disc-clause__content h2 {
  margin: 0 0 0.9rem;
  font-family: var(--display);
  font-size: clamp(1.25rem, 3vw, 1.6rem);
  font-weight: 400;
  line-height: 1.32;
  letter-spacing: 0.03em;
  color: var(--white-soft);
}

.page-disclaimer .disc-clause__content p {
  margin: 0 0 0.9rem;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--mist-200);
}

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

.page-disclaimer .disc-clause__content a {
  color: var(--glow-amber);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-disclaimer .disc-clause__content a:hover {
  color: var(--signal-orange);
}

/* 项目符号列表 */

.page-disclaimer .disc-bullets {
  list-style: none;
  margin: 0 0 0.9rem;
  padding: 0;
  display: grid;
  gap: 0.65rem;
}

.page-disclaimer .disc-bullets li {
  position: relative;
  padding-left: 1.35rem;
  font-size: 0.97rem;
  line-height: 1.8;
  color: var(--mist-200);
}

.page-disclaimer .disc-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 0.6rem;
  height: 1px;
  background: var(--celadon);
}

.page-disclaimer .disc-bullets strong {
  color: var(--white-soft);
  font-weight: 600;
}

/* 提示条 */

.page-disclaimer .disc-note {
  margin: 1.1rem 0 0;
  padding: 0.9rem 1.1rem;
  border-left: 2px solid var(--glow-amber);
  background: rgba(255, 196, 107, 0.07);
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--paper-100);
}

/* 责任条目 */

.page-disclaimer .disc-rules {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.15rem;
  counter-reset: disc-rule;
}

.page-disclaimer .disc-rules > li {
  position: relative;
  padding-left: 2.5rem;
  counter-increment: disc-rule;
}

.page-disclaimer .disc-rules > li::before {
  content: counter(disc-rule, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.06em;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--celadon);
}

.page-disclaimer .disc-rules h3 {
  margin: 0 0 0.25rem;
  font-size: 0.98rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--white-soft);
}

.page-disclaimer .disc-rules p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--mist-200);
}

/* 中段视觉停顿 */

.page-disclaimer .disc-figure {
  margin: clamp(32px, 5vw, 52px) 0;
  padding: 0;
}

.page-disclaimer .disc-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 2px solid var(--ink-500);
  box-shadow: var(--hard-shadow);
}

/* 联系方式 */

.page-disclaimer .disc-contact {
  list-style: none;
  margin: 1.1rem 0;
  padding: 1.05rem 1.2rem;
  background: var(--ink-700);
  border-left: 2px solid var(--signal-orange);
  display: grid;
  gap: 0.65rem;
}

.page-disclaimer .disc-contact li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.55rem;
  font-size: 0.94rem;
  color: var(--mist-200);
}

.page-disclaimer .disc-contact__key {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--celadon);
  min-width: 3.5rem;
}

.page-disclaimer .disc-contact a {
  color: var(--white-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--ink-500);
}

.page-disclaimer .disc-contact a:hover {
  border-bottom-color: var(--glow-amber);
}

.page-disclaimer .copy-btn {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  padding: 0.12rem 0.48rem;
  background: transparent;
  color: var(--glow-amber);
  border: 1px solid var(--ink-500);
  cursor: pointer;
  transition: border-color 0.16s ease;
}

.page-disclaimer .copy-btn:hover {
  border-color: var(--glow-amber);
}

/* 版本信息表 */

.page-disclaimer .disc-meta {
  margin: 1.25rem 0 0;
  padding: 0;
  display: grid;
  border-top: 1px solid var(--ink-500);
}

.page-disclaimer .disc-meta > div {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.2rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--ink-500);
}

.page-disclaimer .disc-meta dt {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--celadon);
}

.page-disclaimer .disc-meta dd {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.7;
  color: var(--white-soft);
}

@media (min-width: 560px) {
  .page-disclaimer .disc-meta > div {
    grid-template-columns: 10rem minmax(0, 1fr);
    gap: 1rem;
    align-items: baseline;
  }
}

/* --------------------- 页尾入口 --------------------- */

.page-disclaimer .disc-exit {
  margin-top: clamp(40px, 6vw, 68px);
  padding-top: clamp(24px, 4vw, 36px);
  border-top: 2px solid var(--ink-500);
}

.page-disclaimer .disc-exit__eyebrow {
  margin: 0 0 1.1rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--signal-orange);
}

.page-disclaimer .disc-exit__grid {
  display: grid;
  gap: 0.85rem;
}

.page-disclaimer .disc-exit__link {
  display: grid;
  gap: 0.4rem;
  padding: 1.05rem 1.2rem;
  border: 2px solid var(--ink-500);
  background: var(--ink-700);
  text-decoration: none;
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.page-disclaimer .disc-exit__link:hover {
  transform: translateY(-2px);
  border-color: var(--glow-amber);
}

.page-disclaimer .disc-exit__tag {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--celadon);
}

.page-disclaimer .disc-exit__title {
  font-size: 0.98rem;
  line-height: 1.6;
  color: var(--white-soft);
}

/* --------------------- 返回顶部 --------------------- */

.page-disclaimer .to-top {
  position: fixed;
  right: clamp(14px, 3vw, 30px);
  bottom: clamp(14px, 3vw, 30px);
  z-index: 30;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 0.8rem;
  border: 2px solid var(--ink-500);
  background: var(--ink-700);
  color: var(--white-soft);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease, border-color 0.16s ease;
}

.page-disclaimer .to-top.is-visible {
  opacity: 1;
  visibility: visible;
}

.page-disclaimer .to-top:hover {
  border-color: var(--glow-amber);
}

/* --------------------- 桌面栅格 --------------------- */

@media (min-width: 780px) {
  .page-disclaimer .disc-clause {
    grid-template-columns: 3.5rem minmax(0, 1fr);
    gap: 1.25rem 1.5rem;
  }

  .page-disclaimer .disc-clause__num {
    padding-top: 0.42rem;
  }

  .page-disclaimer .disc-exit__grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* --------------------- 减弱动效 --------------------- */

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .disc-exit__link,
  .page-disclaimer .disc-toc__list a,
  .page-disclaimer .copy-btn,
  .page-disclaimer .to-top {
    transition: none;
  }

  .page-disclaimer .disc-exit__link:hover {
    transform: none;
  }
}