:root{color-scheme:light;--ink: #17211d;--muted: #62706a;--line: #d9dfd8;--paper: #f7f8f3;--panel: #ffffff;--green: #1e6f55;--red: #9e2f2f;--gold: #b4812a;--blue: #315d8c;--purple: #6c5a8f}*{box-sizing:border-box}body{margin:0;font-family:Inter,Noto Sans SC,PingFang SC,Microsoft YaHei,sans-serif;color:var(--ink);background:var(--paper)}button,input,textarea,select{font:inherit}a{color:var(--green);text-decoration:none}.app{min-height:100vh;display:grid;grid-template-columns:280px 1fr}.sidebar{position:sticky;top:0;height:100vh;padding:24px 18px;border-right:1px solid var(--line);background:#eef2ea}.brand{display:flex;gap:12px;align-items:center;padding:12px;margin-bottom:22px}.brand strong,.brand span{display:block}.brand strong{font-size:16px}.brand span,.muted{color:var(--muted)}nav{display:grid;gap:8px}nav button,.hero-actions button,.concept-list button,.relation-list button,.year-bars button{border:0;cursor:pointer}nav button{display:flex;align-items:center;gap:10px;min-height:42px;padding:0 12px;border-radius:6px;color:var(--ink);background:transparent;text-align:left}nav button.active{color:#fff;background:var(--green)}main{min-width:0}.page{width:min(1180px,calc(100vw - 320px));margin:0 auto;padding:34px 0 48px}.hero{display:grid;grid-template-columns:1.25fr .75fr;gap:28px;min-height:360px;align-items:center;border-bottom:1px solid var(--line)}.compact-hero{min-height:260px}.graph-header{display:grid;grid-template-columns:1.25fr .75fr;gap:28px;align-items:end;margin-bottom:22px}.graph-header p{max-width:760px;color:var(--muted);font-size:17px;line-height:1.8}.eyebrow{color:var(--gold);font-weight:700;letter-spacing:0}h1{margin:0 0 14px;font-size:34px;line-height:1.18}h2{margin:0 0 10px;font-size:20px}.hero p{max-width:720px;color:var(--muted);font-size:18px;line-height:1.8}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.hero-actions 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