@import "https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;700&family=Noto+Sans+SC:wght@400;500;600&family=Ma+Shan+Zheng&display=swap";
.human-history-root{--bg:#0b0907;--bg-deep:#050402;--bg-card:rgba(26,21,15,.88);--bg-card-hover:rgba(38,30,20,.95);--bg-elev:rgba(48,38,25,.9);--parchment:#f1e5c0;--parchment-dim:#9d8e6c;--parchment-mute:#8c7e5c;--gold:#c8a951;--gold-light:#e8d48b;--gold-deep:#8d7434;--cinnabar:#df6d60;--cinnabar-soft:#d96b5a;--crimson:#8b1a1a;--jade:#2d6a4f;--sky:#2b4a73;--purple:#4a148c;--earth:#6b4226;--silk:#f5ecd5;--border:rgba(200,169,81,.16);--border-hover:rgba(200,169,81,.42);--border-soft:rgba(200,169,81,.08);--shadow-card:0 1px 0 rgba(241,229,192,.04) inset,0 24px 60px -28px rgba(0,0,0,.7);--shadow-hover:0 1px 0 rgba(241,229,192,.06) inset,0 32px 80px -28px rgba(0,0,0,.8);--serif:"Noto Serif SC","Songti SC","SimSun",serif;--display:"Fraunces","Noto Serif SC","Songti SC",serif;--italic:"EB Garamond","Fraunces","Noto Serif SC",serif;--sans:"Noto Sans SC","PingFang SC","SimHei",sans-serif;--mono:"JetBrains Mono","SFMono-Regular",ui-monospace,monospace;--brush:"Ma Shan Zheng",cursive;--ease-out:cubic-bezier(.16,1,.3,1);--ease-cinema:cubic-bezier(.4,0,.1,1);--radius:8px;--radius-lg:14px;--radius-xl:22px;--nav-h:64px;--color-bg-base:var(--bg);--color-bg-overlay:var(--bg)}@supports (color:color-mix(in lab, red, red)){.human-history-root{--color-bg-overlay:color-mix(in srgb,var(--bg)84%,transparent)}}.human-history-root{--color-fg-primary:var(--parchment);--color-fg-secondary:var(--parchment-dim);--color-fg-muted:var(--parchment-mute);--color-border-faint:var(--border-soft);--color-border-subtle:var(--border);--color-border-strong:var(--border-hover)}.light .human-history-root{--bg:#f5eedf;--bg-deep:#ebe1c8;--bg-card:rgba(255,250,238,.92);--bg-card-hover:#fffdf4;--bg-elev:#fffcf0;--parchment:#2a1c10;--parchment-dim:#6a4e30;--parchment-mute:#684a28;--gold:#8b6914;--gold-light:#a07d2a;--gold-deep:#604509;--cinnabar:#a8362b;--cinnabar-soft:#963d34;--silk:#fff8e8;--border:rgba(139,105,20,.18);--border-hover:rgba(139,105,20,.45);--border-soft:rgba(139,105,20,.09);--shadow-card:0 1px 0 rgba(255,255,255,.6) inset,0 18px 40px -24px rgba(96,60,20,.35);--shadow-hover:0 1px 0 rgba(255,255,255,.8) inset,0 26px 60px -24px rgba(96,60,20,.45)}.light .human-history-root:before{background:radial-gradient(circle at 18% 12%,rgba(139,105,20,.1),transparent 55%),radial-gradient(circle at 82% 86%,rgba(168,54,43,.08),transparent 55%),radial-gradient(transparent 45%,rgba(96,60,20,.18) 100%)}.light .human-history-root:after{opacity:.18;mix-blend-mode:multiply}.human-history-root :focus-visible{outline:2px solid var(--gold);outline-offset:2px;border-radius:2px}.human-history-root *,.human-history-root :before,.human-history-root :after{box-sizing:border-box;margin:0;padding:0}.human-history-root{scroll-behavior:smooth;background:var(--bg);width:100%;color:var(--parchment);font-size:16px;font-family:var(--sans);letter-spacing:.01em;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100dvh;line-height:1.65;position:relative;overflow-x:hidden}.human-history-root:before{content:"";z-index:0;pointer-events:none;background:radial-gradient(circle at 18% 12%,rgba(200,169,81,.08),transparent 55%),radial-gradient(circle at 82% 86%,rgba(200,68,58,.05),transparent 55%),radial-gradient(transparent 35%,rgba(0,0,0,.55) 100%);position:fixed;top:0;bottom:0;left:0;right:0}.human-history-root:after{content:"";z-index:0;pointer-events:none;opacity:.45;mix-blend-mode:overlay;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240' viewBox='0 0 240 240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.78  0 0 0 0 0.66  0 0 0 0 0.32  0 0 0 0.6 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");background-size:240px 240px;position:fixed;top:0;bottom:0;left:0;right:0}.human-history-root main,.human-history-root nav{z-index:1;width:100%;position:relative}.human-history-root ::selection{background:var(--gold);color:var(--bg)}.human-history-root ::-webkit-scrollbar{width:6px}.human-history-root ::-webkit-scrollbar-track{background:var(--bg)}.human-history-root ::-webkit-scrollbar-thumb{background:var(--gold);border-radius:3px}@media (prefers-reduced-motion:reduce){.human-history-root *,.human-history-root :before,.human-history-root :after{transition-duration:.01ms!important;animation-duration:.01ms!important}}.modal-overlay{z-index:200;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);opacity:0;pointer-events:none;background:rgba(0,0,0,.6);justify-content:center;align-items:center;padding:24px;transition:opacity .3s;display:flex;position:fixed;top:0;bottom:0;left:0;right:0}.modal-overlay.open{opacity:1;pointer-events:auto}.modal-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);width:100%;max-width:500px;padding:32px;transition:transform .3s;transform:translateY(20px)scale(.96)}.modal-overlay.open .modal-card{transform:translateY(0)scale(1)}.modal-head{align-items:center;gap:8px;margin-bottom:12px;display:flex}.modal-close{color:var(--parchment-dim);cursor:pointer;background:0 0;border:none;margin-left:auto;padding:4px;font-size:1.2rem}.modal-close:hover{color:var(--gold)}.modal-title{font-family:var(--serif);color:var(--parchment);margin-bottom:12px;font-size:1.5rem}.modal-body{color:var(--parchment-dim);margin-bottom:16px;line-height:1.8}.modal-footer{color:var(--parchment-dim);opacity:.6;justify-content:space-between;align-items:center;font-size:.75rem;display:flex}.empty-state{text-align:center;color:var(--parchment-dim);padding:80px 24px}.empty-state h3{font-family:var(--serif);color:var(--parchment);margin-bottom:8px;font-size:1.3rem}@keyframes sceneCardIn{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(6px)}}@media (max-width:720px){.human-history-root .nav-subtitle{display:none}.human-history-root .nav-inner{gap:8px;padding:0 14px}}@media (max-width:640px){.human-history-root .mini-tl:before{left:14px}.human-history-root .mini-tl-item{grid-template-columns:28px minmax(0,1fr);gap:8px 12px;padding-left:0}.human-history-root .mini-tl-year{text-align:left;grid-column:1/-1;padding-left:32px;font-size:.92rem}.human-history-root .mini-tl-dot{grid-column:1;margin:6px auto 0}.human-history-root .mini-tl-content{grid-column:2}.human-history-root .hero{padding:90px 22px 60px}.human-history-root .hero-aside{display:none}.human-history-root .stats-row>div{border-right:0;border-bottom:1px dashed var(--border)}.human-history-root .stats-row>div:last-child{border-bottom:0}}@media (min-width:1440px){.human-history-root{--content-max:1600px;--content-wide:1800px;font-size:17px}.human-history-root .nav-inner{max-width:var(--content-wide);padding:0 56px}.human-history-root .nav-links{gap:40px}.human-history-root .hero-content{max-width:800px}.human-history-root .hero-seal{width:120px;height:120px}.human-history-root .hero-desc{font-size:1.2rem;line-height:2}.human-history-root .btn{padding:14px 36px;font-size:1rem}.human-history-root .stats-row{gap:56px;max-width:1400px;padding:80px 40px}.human-history-root .stat-val,.human-history-root .section-title{font-size:2.8rem}.human-history-root .era-list{max-width:var(--content-wide);grid-template-columns:repeat(2,1fr);gap:24px;padding:0 56px 100px;display:grid}.human-history-root .era-card{padding:28px 32px}.human-history-root .mini-tl{max-width:1400px;padding-bottom:100px}.human-history-root .quote-section{max-width:1200px;padding:100px 40px}.human-history-root .quote-section blockquote{font-size:1.6rem}.human-history-root .figures-grid{grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}.human-history-root .figure-card{padding:28px}.human-history-root .figure-avatar{width:56px;height:56px;font-size:1.8rem}}@media (min-width:1920px){.human-history-root{--content-max:1800px;--content-wide:100%}.human-history-root .nav-inner{max-width:1920px;padding:0 80px}.human-history-root .nav-links{gap:48px}.human-history-root .hero-content{max-width:900px}.human-history-root .hero:before{content:"";pointer-events:none;background:radial-gradient(at 50% 40%,rgba(200,169,81,.04) 0%,transparent 60%);position:absolute;top:0;bottom:0;left:0;right:0}.human-history-root .hero h1{font-size:5.5rem}.human-history-root .hero h2{letter-spacing:.5em;font-size:2.2rem}.human-history-root .stats-row{gap:64px;max-width:1600px}.human-history-root .stat-val{font-size:3.2rem}.human-history-root .era-list{grid-template-columns:repeat(3,1fr);max-width:1920px;padding:0 80px 120px}.human-history-root .era-card{padding:32px 36px}.human-history-root .era-icon{width:52px;height:52px;font-size:1.5rem}.human-history-root .mini-tl{max-width:1600px}.human-history-root .quote-section{max-width:1400px;padding:120px 40px}.human-history-root .quote-section blockquote{font-size:1.8rem}.human-history-root .figures-grid{grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:28px}}