*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--accent: #3d7a4a;--accent-soft: #e8f5eb;--accent-tint: #f4fbf5;--ink: #1a1a18;--ink-2: #444440;--ink-3: #656560;--ink-4: #6f6f69;--paper: #fafaf8;--paper-2: #f2f2ef;--line: #e8e8e4}body{font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:var(--paper);color:var(--ink);line-height:1.7;font-size:15px}nav{display:flex;align-items:center;justify-content:space-between;padding:0 24px;height:56px;background:#fff;border-bottom:1px solid var(--line)}.nav-logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;text-decoration:none;color:inherit}.nav-logo .badge{width:28px;height:28px;border-radius:8px;background:var(--accent);color:#fff;display:grid;place-items:center;font-size:15px}.btn-lang{font-size:13px;color:var(--ink-3);background:none;border:none;cursor:pointer;padding:4px 8px;border-radius:8px}.btn-lang:hover{background:var(--paper-2)}.container{max-width:720px;margin:0 auto;padding:40px 24px 80px}.page-meta{font-size:12px;color:var(--ink-4);margin-bottom:8px}h1{font-size:28px;font-weight:800;margin-bottom:8px}.intro-box{background:var(--accent-tint);border-radius:14px;padding:16px 18px;font-size:14px;color:var(--ink-2);margin-bottom:28px;line-height:1.7}.summary-card{background:var(--accent-soft);border-radius:16px;padding:20px;margin-bottom:28px}.summary-card h2{font-size:14px;font-weight:700;margin-bottom:12px}.summary-row{display:flex;gap:16px}.summary-col{flex:1}.summary-col h3{font-size:12px;font-weight:700;color:var(--accent);margin-bottom:8px}.summary-col ul{margin:0;padding:0}.summary-col li{font-size:13px;color:var(--ink-2);margin-bottom:5px;list-style:none}.summary-col li:before{content:attr(data-icon);margin-right:6px}.accordion{border:1px solid var(--line);border-radius:16px;overflow:hidden;margin-bottom:24px;background:#fff}.acc-item{border-bottom:1px solid var(--line)}.acc-item:last-child{border-bottom:none}.acc-btn{display:flex;align-items:center;gap:12px;width:100%;padding:16px;background:none;border:none;cursor:pointer;text-align:left}.acc-icon{width:32px;height:32px;border-radius:10px;background:var(--paper-2);display:grid;place-items:center;font-size:16px;flex-shrink:0}.acc-title{flex:1;font-size:14px;font-weight:700}.acc-chevron{font-size:12px;color:var(--ink-4);transition:transform .2s}.acc-chevron.open{transform:rotate(180deg)}.acc-body{padding:0 16px 16px 60px;display:none}.acc-body.open{display:block}.acc-body[hidden]{display:none}.acc-body p{font-size:13px;color:var(--ink-2);margin-bottom:6px;line-height:1.7}.acc-body strong{font-weight:700;color:var(--ink)}.footer-note{font-size:12px;color:var(--ink-4);text-align:center;margin-top:32px}.footer-note a{color:var(--accent)}@media(max-width:540px){.summary-row{flex-direction:column}}