.page-disclaimer {
  --df-bg: #D8E2E8;
  --df-card: #F4F8FA;
  --df-card-solid: #FFFFFF;
  --df-ink: #10202B;
  --df-ink-dim: rgba(16, 32, 43, .62);
  --df-body: #22333F;
  --df-line: rgba(11, 31, 51, .16);
  --df-line-soft: rgba(11, 31, 51, .08);
  --df-teal-deep: #0E7F72;
  --df-ember: #FF5A36;
  background: var(--df-bg);
  color: var(--df-ink);
  font-family: var(--font-cn);
  display: block;
}

/* ===== 页头 ===== */
.page-disclaimer .df-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--ice);
  color: var(--text);
  padding: clamp(26px, 6vw, 60px) 0 clamp(44px, 8vw, 92px);
}

.page-disclaimer .df-hero-media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.page-disclaimer .df-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: .42;
  max-width: 100%;
  height: auto;
  min-height: 100%;
}

.page-disclaimer .df-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(118deg, rgba(7, 17, 28, .95) 0%, rgba(11, 31, 51, .86) 48%, rgba(14, 59, 58, .68) 100%);
}

.page-disclaimer .df-hero::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--ember) 0%, var(--cyan) 42%, rgba(47, 224, 200, 0) 100%);
}

.page-disclaimer .df-hero-inner {
  position: relative;
}

.page-disclaimer .df-crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
}

.page-disclaimer .df-crumbs li {
  display: flex;
  align-items: center;
}

.page-disclaimer .df-crumbs li + li::before {
  content: "／";
  margin: 0 8px;
  color: var(--text-mute);
}

.page-disclaimer .df-crumbs a {
  color: var(--cyan-soft);
  text-decoration: none;
}

.page-disclaimer .df-crumbs a:hover,
.page-disclaimer .df-crumbs a:focus-visible {
  color: var(--cyan);
  text-decoration: underline;
}

.page-disclaimer .df-crumbs li[aria-current="page"] {
  color: var(--text-dim);
}

.page-disclaimer .df-hero-tag {
  margin: clamp(30px, 5vw, 56px) 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .24em;
  color: var(--cyan);
}

.page-disclaimer .df-hero h1 {
  margin: 0;
  font-size: clamp(34px, 7vw, 56px);
  line-height: 1.06;
  font-weight: 800;
  letter-spacing: -.01em;
}

.page-disclaimer .df-hero-lead {
  max-width: 60ch;
  margin: 20px 0 0;
  font-size: 16px;
  line-height: 28px;
  color: var(--text-dim);
}

/* ===== 关键约定速览 ===== */
.page-disclaimer .df-brief {
  padding: clamp(38px, 6vw, 68px) 0 0;
}

.page-disclaimer .df-brief-title {
  margin: 0;
  font-size: clamp(21px, 3vw, 26px);
  font-weight: 800;
  letter-spacing: -.005em;
}

.page-disclaimer .df-brief-note {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--df-ink-dim);
}

.page-disclaimer .df-brief-grid {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-disclaimer .df-brief-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
  padding: 18px 18px 20px;
  background: var(--df-card);
  border: 1px solid var(--df-line);
  border-top: 2px solid rgba(11, 31, 51, .22);
  color: inherit;
  text-decoration: none;
  transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease, background-color .22s ease;
}

.page-disclaimer .df-brief-card:hover,
.page-disclaimer .df-brief-card:focus-visible {
  transform: translateY(-3px);
  border-top-color: var(--df-ember);
  background: var(--df-card-solid);
  box-shadow: 0 14px 28px rgba(11, 31, 51, .13);
  outline: none;
}

.page-disclaimer .df-brief-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--df-ember);
}

.page-disclaimer .df-brief-head {
  font-size: 16px;
  font-weight: 800;
  line-height: 24px;
}

.page-disclaimer .df-brief-text {
  font-size: 14px;
  line-height: 24px;
  color: var(--df-ink-dim);
}

/* ===== 双栏：索引 + 条款 ===== */
.page-disclaimer .df-layout {
  display: grid;
  gap: 26px;
  padding-top: clamp(34px, 5vw, 56px);
  padding-bottom: clamp(56px, 8vw, 96px);
}

.page-disclaimer .df-index {
  padding: 20px;
  background: rgba(244, 248, 250, .74);
  border: 1px solid var(--df-line);
}

.page-disclaimer .df-index-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .22em;
  color: var(--df-ink-dim);
}

.page-disclaimer .df-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-disclaimer .df-index-list a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 10px 0;
  border-bottom: 1px solid var(--df-line-soft);
  color: inherit;
  text-decoration: none;
  font-size: 15px;
  line-height: 22px;
  transition: color .18s ease, padding-left .18s ease;
}

.page-disclaimer .df-index-list li:last-child a {
  border-bottom: none;
}

.page-disclaimer .df-index-list a:hover,
.page-disclaimer .df-index-list a:focus-visible {
  color: var(--df-teal-deep);
  padding-left: 4px;
  outline: none;
}

.page-disclaimer .df-index-num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--df-ember);
}

.page-disclaimer .df-index-foot {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--df-line);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 22px;
  letter-spacing: .05em;
  color: var(--df-ink-dim);
}

.page-disclaimer .df-index-foot a {
  color: var(--df-teal-deep);
  text-decoration: none;
  margin-left: 10px;
}

.page-disclaimer .df-index-foot a:first-of-type {
  margin-left: 0;
}

.page-disclaimer .df-index-foot a:hover,
.page-disclaimer .df-index-foot a:focus-visible {
  text-decoration: underline;
}

/* ===== 条款长文 ===== */
.page-disclaimer .df-terms {
  display: grid;
  gap: 18px;
  min-width: 0;
}

.page-disclaimer .df-clause {
  scroll-margin-top: 110px;
  padding: clamp(22px, 3.4vw, 34px);
  background: var(--df-card);
  border: 1px solid var(--df-line);
  border-left: 3px solid rgba(11, 31, 51, .18);
  transition: border-color .25s ease, background-color .25s ease, box-shadow .25s ease;
}

.page-disclaimer .df-clause:target {
  border-left-color: var(--df-ember);
  background: var(--df-card-solid);
  box-shadow: 0 0 0 1px rgba(255, 90, 54, .28);
}

.page-disclaimer .df-clause-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}

.page-disclaimer .df-clause-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--df-ember);
}

.page-disclaimer .df-clause h2 {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 25px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -.005em;
}

.page-disclaimer .df-clause p {
  margin: 16px 0 0;
  font-size: 15.5px;
  line-height: 28px;
  color: var(--df-body);
}

.page-disclaimer .df-clause p a {
  color: var(--df-teal-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-disclaimer .df-clause p a:hover,
.page-disclaimer .df-clause p a:focus-visible {
  color: var(--df-ember);
}

.page-disclaimer .df-mini {
  margin: 26px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .2em;
  color: var(--df-ink-dim);
}

.page-disclaimer .df-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-disclaimer .df-list li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  line-height: 26px;
  color: var(--df-body);
}

.page-disclaimer .df-list li::before {
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 26px;
}

.page-disclaimer .df-list--allow li::before {
  content: "✓";
  color: var(--df-teal-deep);
}

.page-disclaimer .df-list--deny li::before {
  content: "✕";
  color: var(--df-ember);
}

.page-disclaimer .df-contact-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-disclaimer .df-contact-list li {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  padding: 12px 14px;
  background: rgba(216, 226, 232, .5);
  border: 1px solid var(--df-line-soft);
}

.page-disclaimer .df-contact-label {
  flex: 0 0 auto;
  min-width: 72px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  line-height: 24px;
  color: var(--df-ink-dim);
}

.page-disclaimer .df-contact-value {
  font-family: var(--font-mono);
  font-size: 14.5px;
  line-height: 24px;
  color: var(--df-ink);
  word-break: break-word;
}

/* ===== 响应式 ===== */
@media (min-width: 640px) {
  .page-disclaimer .df-hero-lead {
    font-size: 17px;
    line-height: 30px;
  }

  .page-disclaimer .df-brief-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-disclaimer .df-brief-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-disclaimer .df-layout {
    grid-template-columns: 244px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-disclaimer .df-index {
    position: sticky;
    top: 104px;
  }

  .page-disclaimer .df-terms {
    gap: 22px;
  }

  .page-disclaimer .df-hero-lead {
    font-size: 18px;
    line-height: 30px;
  }
}

@media (min-width: 1180px) {
  .page-disclaimer .df-brief-card {
    padding: 20px 20px 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .df-brief-card,
  .page-disclaimer .df-index-list a,
  .page-disclaimer .df-clause {
    transition: none;
  }

  .page-disclaimer .df-brief-card:hover,
  .page-disclaimer .df-brief-card:focus-visible {
    transform: none;
  }
}