/* LitePage 用例落地页（/use-cases/*）共享样式，基于 litepage-subpage.css 的设计变量 */
.uc-shell { max-width: 1080px; margin: 0 auto; padding: 24px 28px 72px; }
.uc-hero { padding: 44px 34px; }
.uc-hero-title { font-family: var(--display-font); font-size: clamp(34px, 5.4vw, 52px); line-height: 1.08; letter-spacing: -0.04em; margin: 0 0 16px; }
.uc-hero-copy { max-width: 760px; font-size: 16px; line-height: 1.76; color: var(--lp-muted); margin: 0 0 26px; }
.uc-cta-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.uc-btn { display: inline-flex; align-items: center; gap: 8px; padding: 13px 26px; border-radius: 999px; font-size: 15px; font-weight: 600; text-decoration: none; border: 1px solid transparent; transition: transform .15s ease, opacity .15s ease; }
.uc-btn:hover { transform: translateY(-1px); }
.uc-btn-primary { background: var(--lp-accent); color: #fff; }
.uc-btn-ghost { border-color: var(--lp-line); color: var(--lp-text); background: var(--lp-frost); }
.uc-section { margin-top: 26px; padding: 34px; }
.uc-section h2 { font-size: 24px; letter-spacing: -0.02em; margin: 0 0 6px; }
.uc-section > p.lead { color: var(--lp-muted); margin: 0 0 22px; font-size: 15px; }
.uc-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.uc-card { border: 1px solid var(--lp-line); border-radius: 14px; padding: 20px; background: var(--lp-frost); }
.uc-card h3 { font-size: 15.5px; margin: 0 0 8px; }
.uc-card p { font-size: 13.5px; line-height: 1.7; color: var(--lp-muted); margin: 0; }
.uc-steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; counter-reset: step; }
.uc-step { border: 1px solid var(--lp-line); border-radius: 14px; padding: 20px; background: var(--lp-frost); position: relative; counter-increment: step; }
.uc-step::before { content: counter(step); display: inline-flex; width: 26px; height: 26px; align-items: center; justify-content: center; border-radius: 50%; background: var(--lp-accent-soft); color: var(--lp-accent-strong); font-size: 13px; font-weight: 700; margin-bottom: 10px; }
.uc-step h3 { font-size: 15.5px; margin: 0 0 8px; }
.uc-step p { font-size: 13.5px; line-height: 1.7; color: var(--lp-muted); margin: 0; }
.uc-faq { display: grid; gap: 10px; }
.uc-faq details { border: 1px solid var(--lp-line); border-radius: 14px; padding: 16px 20px; background: var(--lp-frost); }
.uc-faq summary { font-size: 15px; font-weight: 600; cursor: pointer; list-style: none; }
.uc-faq summary::-webkit-details-marker { display: none; }
.uc-faq summary::before { content: "Q "; color: var(--lp-accent-strong); }
.uc-faq p { margin: 10px 0 0; font-size: 14px; line-height: 1.75; color: var(--lp-muted); }
.uc-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.uc-links a { padding: 9px 16px; border-radius: 999px; border: 1px solid var(--lp-line); background: var(--lp-frost); color: var(--lp-text); font-size: 13.5px; text-decoration: none; }
.uc-links a:hover { border-color: var(--lp-accent); }
.uc-banner { margin-top: 26px; padding: 30px 34px; border-radius: 16px; border: 1px solid var(--lp-line); background: linear-gradient(120deg, var(--lp-frost), transparent 70%); display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px; }
.uc-banner h2 { font-size: 21px; margin: 0 0 6px; letter-spacing: -0.02em; }
.uc-banner p { margin: 0; color: var(--lp-muted); font-size: 14px; }
@media (max-width: 860px) {
    .uc-grid, .uc-steps { grid-template-columns: 1fr; }
    .uc-shell { padding: 16px 16px 56px; }
    .uc-hero, .uc-section { padding: 26px 20px; }
}