/* 第一方资源中心：沿用首页暖白、琥珀与柔和蓝色的教育服务视觉；内容页保持清晰、克制且不作医疗诊断承诺。专题插图用低饱和纸感教育编辑插画强化理解，正文仍以可访问的 HTML 为主。 */
:root{--ink:#334155;--muted:#64748b;--amber:#d97706;--amber-pale:#fff7ed;--line:#fed7aa;--paper:#fffaf5;--white:#fff}*{box-sizing:border-box}body{margin:0;background:var(--paper);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);line-height:1.85}a{color:inherit}.wrap{width:min(920px,calc(100% - 40px));margin:auto}.top{border-bottom:1px solid var(--line);background:rgba(255,250,245,.94);position:sticky;top:0;z-index:2}.top .wrap{min-height:66px;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{font-size:.93rem;font-weight:700;text-decoration:none;color:#92400e}.crumb{font-size:.84rem;color:var(--muted);white-space:nowrap;text-decoration:none}.hero{padding:64px 0 40px;background:linear-gradient(135deg,#fffaf5 0%,#ffedd5 100%);border-bottom:1px solid var(--line)}.eyebrow{display:inline-block;padding:.18rem .65rem;border-radius:999px;background:#ffedd5;color:#9a3412;font-weight:700;font-size:.76rem;letter-spacing:.04em}.hero h1{font-size:clamp(2rem,5vw,3.25rem);line-height:1.28;letter-spacing:-.03em;color:#3b2f22;margin:.8rem 0}.hero p{max-width:760px;margin:0;color:#5d4b3b;font-size:1.04rem}.meta{margin-top:18px;color:#8a6c51;font-size:.84rem}.topic-illustration{width:min(920px,calc(100% - 40px));margin:30px auto 0;overflow:hidden;border:1px solid #f8cfa5;border-radius:22px;background:#ffedd5;box-shadow:0 18px 38px rgba(146,64,14,.12)}.topic-illustration img{display:block;width:100%;height:auto;aspect-ratio:3/2;object-fit:cover}.article{padding:42px 0 70px}.article h2{font-size:1.35rem;line-height:1.45;margin:2.25rem 0 .75rem;color:#334155}.article p{font-size:1rem;margin:.8rem 0}.notice{margin:2rem 0;padding:1rem 1.15rem;border-left:4px solid #f59e0b;background:#fffbeb;color:#5d4b3b}.steps{display:grid;gap:12px;padding:0;margin:1rem 0;list-style:none;counter-reset:steps}.steps li{counter-increment:steps;padding:1rem 1rem 1rem 3.4rem;background:#fff;border:1px solid #fde6c8;border-radius:14px;position:relative}.steps li:before{content:counter(steps);position:absolute;left:1rem;top:1rem;width:1.7rem;height:1.7rem;border-radius:50%;display:grid;place-items:center;background:#f59e0b;color:#fff;font-size:.78rem;font-weight:700}.related{margin-top:3rem;padding:1.3rem;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.related h2{margin:.1rem 0 .6rem;font-size:1.1rem}.related a{display:inline-block;margin:.3rem .8rem .3rem 0;color:#b45309;font-size:.9rem}.footer{padding:2rem 0;background:#fff;border-top:1px solid #fde6c8;color:#8a6c51;font-size:.82rem}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;padding:44px 0}.card{display:block;padding:22px;background:#fff;border:1px solid #fde6c8;border-radius:16px;text-decoration:none;transition:.18s transform,.18s box-shadow}.card:hover{transform:translateY(-3px);box-shadow:0 10px 24px rgba(180,83,9,.12)}.card small{color:#b45309;font-weight:700}.card h2{font-size:1.18rem;line-height:1.45;margin:.6rem 0}.card p{margin:0;color:var(--muted);font-size:.9rem;line-height:1.7}@media(max-width:640px){.top .wrap{min-height:58px}.crumb{font-size:.76rem}.hero{padding:42px 0 28px}.topic-illustration{width:calc(100% - 28px);margin-top:22px;border-radius:16px}.article{padding-top:26px}.grid{grid-template-columns:1fr;padding:28px 0}.hero h1{font-size:2rem}}