:root{
  --paper:#f7f3eb;--ink:#12213a;--muted:#6c7480;--line:#c9c0b2;--card:#fffdf9;
  --shadow:0 14px 38px rgba(39,32,23,.08);--axis-x:222px;
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--paper);font-synthesis:none
}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:radial-gradient(circle at 83% 8%,rgba(191,171,139,.18),transparent 28rem),linear-gradient(180deg,#faf7f1 0,#f4efe6 100%);color:var(--ink)}
body.dialog-open{overflow:hidden;position:fixed;left:0;right:0;width:100%}a{color:inherit;text-decoration:none}button,input{font:inherit}button{color:inherit}
.site-header{height:72px;display:grid;grid-template-columns:1fr auto 1fr;gap:26px;align-items:center;padding:0 clamp(20px,4vw,64px);border-bottom:1px solid rgba(71,62,49,.11);background:rgba(250,248,243,.9);backdrop-filter:blur(18px);position:sticky;top:0;z-index:20}
.brand{display:flex;align-items:center;gap:10px;width:max-content}.brand-mark{display:grid;place-items:center;width:38px;height:38px;border:1px solid rgba(18,33,58,.16);border-radius:12px;background:#fff}
.brand strong{display:block;font-family:Georgia,"Noto Serif SC",serif;font-size:21px;letter-spacing:.06em}.brand small{display:block;color:var(--muted);font-size:10px;margin-top:1px;letter-spacing:.03em}
.top-nav{display:flex;align-items:center;gap:28px;font-size:14px;font-weight:650}.top-nav a{padding:25px 0 21px;border-bottom:3px solid transparent}.top-nav a:hover,.top-nav a.active{border-bottom-color:var(--ink)}
.search-box{justify-self:end;display:flex;align-items:center;gap:8px;width:min(300px,100%);height:40px;border:1px solid rgba(18,33,58,.12);border-radius:12px;background:rgba(255,255,255,.74);padding:0 12px}
.search-box span{font-size:21px;color:#7a8390}.search-box input{width:100%;border:0;outline:0;background:transparent;color:var(--ink)}.search-box input::placeholder{color:#8a9098}
main{overflow:hidden}.hero{max-width:1480px;margin:auto;padding:58px clamp(24px,5vw,76px) 30px;display:flex;justify-content:space-between;gap:30px;align-items:end;position:relative}
.hero:after{content:"";position:absolute;right:-70px;top:0;width:520px;height:230px;opacity:.08;background:radial-gradient(circle at 30% 40%,transparent 0 30px,#15223a 31px 32px,transparent 33px),radial-gradient(circle at 60% 65%,transparent 0 55px,#15223a 56px 57px,transparent 58px);transform:rotate(-9deg)}
.eyebrow{font-size:10px;font-weight:800;letter-spacing:.16em;color:#8b7559;margin:0 0 12px}
h1,h2,.period-title,.dialog-title{font-family:Georgia,"Noto Serif SC","Songti SC",serif}
h1{font-size:clamp(38px,5vw,70px);line-height:1.06;letter-spacing:-.04em;margin:0}
.hero-copy{font-family:Georgia,"Noto Serif SC",serif;font-size:16px;line-height:1.8;color:#687080;max-width:700px;margin:18px 0 0}
.hero-note{position:relative;z-index:1;min-width:210px;text-align:right;font-family:Georgia,"Noto Serif SC",serif;color:#776c5f;transform:rotate(-5deg);padding-bottom:18px}.hero-note span,.hero-note strong{display:block;font-weight:400}.hero-note strong{margin-top:7px}
.controls{max-width:1480px;margin:auto;padding:0 clamp(24px,5vw,76px) 26px;display:flex;justify-content:space-between;align-items:center;gap:24px}
.region-filters{display:flex;flex-wrap:wrap;gap:8px}.region-button{border:1px solid rgba(18,33,58,.11);background:rgba(255,255,255,.65);border-radius:10px;padding:8px 12px;font-size:12px;font-weight:650;display:flex;align-items:center;gap:7px;cursor:pointer;transition:.18s ease}
.region-button i{width:9px;height:9px;border-radius:50%;background:var(--region-color)}.region-button:hover{transform:translateY(-1px);border-color:rgba(18,33,58,.25)}.region-button.active{background:var(--ink);color:white;border-color:var(--ink)}.region-button.active i{box-shadow:0 0 0 2px rgba(255,255,255,.55)}
.timeline-direction{display:flex;align-items:center;gap:8px;color:#777e88;font-size:11px;white-space:nowrap;margin:0}.timeline-direction i{width:80px;height:1px;background:linear-gradient(90deg,#9aa1aa,#172944);position:relative}.timeline-direction i:after{content:"";position:absolute;right:-1px;top:-3px;width:7px;height:7px;border-radius:50%;background:#172944}
.timeline-shell{max-width:1480px;margin:auto;padding:0 clamp(24px,5vw,76px) 72px;position:relative}.timeline-axis{position:absolute;left:calc(clamp(24px,5vw,76px) + var(--axis-x));top:0;bottom:66px;width:2px;background:linear-gradient(180deg,#152844 0,#152844 92%,transparent);z-index:3}
.timeline-axis:after{content:"";position:absolute;bottom:-1px;left:-4px;width:8px;height:8px;border-right:2px solid #152844;border-bottom:2px solid #152844;transform:rotate(45deg)}
.period-row{display:grid;grid-template-columns:var(--axis-x) minmax(0,1fr);min-height:340px;border-top:1px solid rgba(85,70,51,.08);position:relative}.period-row:first-child{border-top:0}
.period-row:before{content:"";position:absolute;left:calc(var(--axis-x) - 5px);top:0;width:10px;height:10px;border-radius:50%;background:#152844;border:3px solid var(--paper);box-sizing:content-box;transform:translate(-1px,-50%);z-index:5;box-shadow:0 0 0 1px rgba(18,33,58,.08)}
.period-meta{padding:34px 28px 34px 0;position:relative;overflow:hidden}.period-meta:before{content:"";position:absolute;inset:0 12px 0 -100px;opacity:.26;background:radial-gradient(circle at 20% 25%,rgba(116,85,52,.25),transparent 26%),linear-gradient(135deg,rgba(158,130,90,.16),transparent 56%)}.period-meta>*{position:relative}
.period-title{font-size:31px;letter-spacing:-.03em;margin:0 0 4px}.period-range{font-family:Georgia,serif;font-size:14px;color:#536074;margin:0 0 16px}.period-intro{font-family:Georgia,"Noto Serif SC",serif;font-size:13px;line-height:1.75;color:#4d5664;margin:0;max-width:185px}.period-count{display:inline-block;margin-top:20px;font-size:10px;color:#7f7568;border:1px solid rgba(74,60,43,.12);border-radius:999px;padding:6px 9px;background:rgba(255,255,255,.48)}
.events-area{padding:20px 0 26px 22px;position:relative;min-width:0}.events-track{display:flex;gap:14px;overflow-x:auto;padding:0 12px 24px 0;scrollbar-width:thin;scrollbar-color:rgba(25,42,67,.18) transparent;scroll-snap-type:x proximity}.events-track::-webkit-scrollbar{height:6px}.events-track::-webkit-scrollbar-thumb{background:rgba(25,42,67,.18);border-radius:10px}
.event-card{--region-color:#152844;flex:1 0 220px;max-width:270px;min-height:240px;border:1px solid rgba(44,38,30,.08);border-radius:13px;background:rgba(255,253,249,.88);box-shadow:0 8px 22px rgba(45,38,27,.055);padding:14px;position:relative;cursor:pointer;scroll-snap-align:start;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;text-align:left}
.event-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:color-mix(in srgb,var(--region-color) 35%,transparent)}.event-card:focus-visible{outline:3px solid color-mix(in srgb,var(--region-color) 25%,transparent);outline-offset:2px}
.event-card:after{content:"";position:absolute;left:50%;bottom:-25px;width:1px;height:23px;background:color-mix(in srgb,var(--region-color) 62%,#c6bdaf)}.event-card:before{content:"";position:absolute;left:calc(50% - 5px);bottom:-31px;width:10px;height:10px;border-radius:50%;background:var(--region-color);border:2px solid var(--paper);z-index:3}
.event-region{display:flex;align-items:center;gap:6px;width:max-content;border-radius:999px;padding:5px 8px 4px;background:color-mix(in srgb,var(--region-color) 10%,white);color:var(--region-color);font-size:10px;font-weight:760}.event-region i{width:7px;height:7px;border-radius:50%;background:var(--region-color)}
.event-year{display:block;color:#7c828a;font-family:Georgia,serif;font-size:12px;margin:15px 0 4px}.event-title{font-family:Georgia,"Noto Serif SC",serif;font-size:17px;line-height:1.35;margin:0 0 8px;letter-spacing:-.02em}.event-summary{font-size:12px;line-height:1.65;color:#626976;margin:0}.event-more{position:absolute;bottom:11px;left:14px;font-size:10px;font-weight:700;color:var(--region-color);opacity:0;transition:.18s}.event-card:hover .event-more{opacity:1}
.events-baseline{height:1px;background:linear-gradient(90deg,#9a958c 0,#9a958c 90%,transparent);position:absolute;left:22px;right:12px;bottom:25px}.empty-state{padding:70px 24px;text-align:center;color:#7b8189;font-family:Georgia,serif}
.timeline-end{display:grid;grid-template-columns:var(--axis-x) minmax(0,1fr);min-height:90px;align-items:start;position:relative}.timeline-end .end-dot{position:absolute;left:calc(var(--axis-x) - 5px);top:0;width:10px;height:10px;border-radius:50%;background:#152844;border:3px solid var(--paper);box-sizing:content-box;transform:translate(-1px,-50%);z-index:5}.timeline-end p{grid-column:2;margin:25px 0 0 22px;color:#566071;font-family:Georgia,serif;font-size:13px}
.about{max-width:920px;margin:65px auto 90px;padding:0 28px;text-align:center}.about h2{font-size:clamp(28px,4vw,44px);margin:0 0 18px}.about>p:last-child{font-family:Georgia,"Noto Serif SC",serif;line-height:1.9;color:#626a75;max-width:720px;margin:auto}
.event-modal[hidden]{display:none}.event-modal{position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:14px;isolation:isolate}.event-modal-backdrop{position:absolute;inset:0;background:rgba(13,22,34,.46);backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px);z-index:-1}.event-dialog-panel{width:min(740px,calc(100vw - 28px));height:min(760px,calc(100dvh - 28px));max-height:calc(100dvh - 28px);border-radius:24px;background:#fbf8f2;color:var(--ink);box-shadow:0 28px 90px rgba(16,24,38,.28);overflow:hidden;position:relative}.dialog-close{position:absolute;top:14px;right:14px;z-index:6;width:38px;height:38px;border:0;border-radius:50%;background:rgba(20,33,53,.10);font-size:25px;line-height:1;cursor:pointer;box-shadow:0 2px 10px rgba(18,33,58,.08)}.dialog-scroll{position:absolute;inset:0;overflow-y:scroll;overflow-x:hidden;-webkit-overflow-scrolling:touch;overscroll-behavior-y:contain;touch-action:pan-y;scrollbar-gutter:stable}.dialog-inner{min-height:calc(100% + 1px);padding:54px 44px calc(48px + env(safe-area-inset-bottom))}.dialog-kicker{display:flex;align-items:center;gap:8px;margin-bottom:13px;color:var(--region-color);font-size:11px;font-weight:750}.dialog-kicker i{width:9px;height:9px;border-radius:50%;background:var(--region-color)}
.dialog-title{font-size:36px;line-height:1.16;margin:0 0 9px}.dialog-year{font-family:Georgia,serif;color:#737b85;margin:0 0 26px}.dialog-lead{font-family:Georgia,"Noto Serif SC",serif;font-size:17px;line-height:1.9;margin:0 0 26px;color:#3d4653}.dialog-detail{font-size:14px;line-height:1.9;color:#59616c;margin:0 0 28px}
.dialog-facts{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:0 0 24px}.dialog-facts div{border:1px solid rgba(18,33,58,.08);border-radius:12px;padding:12px;background:rgba(255,255,255,.55)}.dialog-facts dt{font-size:10px;color:#8a8e94;margin-bottom:5px}.dialog-facts dd{margin:0;font-size:13px;font-weight:650}.tags{display:flex;gap:7px;flex-wrap:wrap}.tags span{font-size:10px;padding:6px 8px;border-radius:999px;background:rgba(18,33,58,.07)}
.related{border-top:1px solid rgba(18,33,58,.09);margin-top:28px;padding-top:22px}.related h3{font-family:Georgia,"Noto Serif SC",serif;font-size:17px;margin:0 0 12px}.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.related button{border:1px solid rgba(18,33,58,.08);border-radius:11px;background:white;text-align:left;padding:10px;cursor:pointer}.related button small{display:block;color:#858a91;margin-bottom:4px}.related button strong{font-size:12px;line-height:1.4}
footer{max-width:1480px;margin:auto;border-top:1px solid rgba(18,33,58,.1);padding:28px clamp(24px,5vw,76px) 40px;display:flex;justify-content:space-between;color:#83878d;font-size:11px}
@media(max-width:980px){:root{--axis-x:160px}.site-header{grid-template-columns:auto 1fr;height:66px}.top-nav{display:none}.search-box{width:min(260px,100%)}.hero{padding-top:42px}.hero-note{display:none}.controls{align-items:flex-start;flex-direction:column}.period-title{font-size:25px}.period-intro{font-size:12px}.event-card{flex-basis:210px}}
@media(max-width:640px){:root{--axis-x:112px}.site-header{padding:0 14px;gap:12px}.brand small{display:none}.brand strong{font-size:18px}.brand-mark{width:34px;height:34px}.search-box{height:38px;padding:0 10px}.search-box input{font-size:12px}.hero{padding:34px 18px 22px}h1{font-size:38px}.hero-copy{font-size:14px;line-height:1.7}.controls{padding:0 18px 20px;gap:13px}.region-filters{flex-wrap:nowrap;overflow-x:auto;width:100%;padding-bottom:3px;scrollbar-width:none}.region-filters::-webkit-scrollbar{display:none}.region-button{flex:0 0 auto}.timeline-direction{display:none}.timeline-shell{padding:0 18px 62px}.timeline-axis{left:calc(18px + var(--axis-x))}.period-row{grid-template-columns:var(--axis-x) minmax(0,1fr);min-height:310px}.period-meta{padding:25px 12px 25px 0}.period-title{font-size:21px}.period-range{font-size:11px;line-height:1.45}.period-intro{font-size:11px;line-height:1.55;padding-right:5px}.period-count{font-size:9px;margin-top:13px}.events-area{padding:14px 0 22px 14px}.events-baseline{left:14px;bottom:21px}.event-card{flex-basis:198px;min-height:232px;padding:12px}.event-card:after{bottom:-21px;height:19px}.event-card:before{bottom:-27px}.event-title{font-size:16px}.event-summary{font-size:11px}.event-more{display:none}.timeline-end{grid-template-columns:var(--axis-x) minmax(0,1fr)}.timeline-end p{margin-left:14px}.about{margin:40px auto 60px;padding:0 20px}.about h2{font-size:29px}.event-modal{padding:5px}.event-dialog-panel{width:calc(100vw - 10px);height:calc(100dvh - 10px);max-height:calc(100dvh - 10px);border-radius:18px}.dialog-close{top:calc(10px + env(safe-area-inset-top));right:10px;width:40px;height:40px;background:rgba(20,33,53,.12)}.dialog-inner{padding:calc(62px + env(safe-area-inset-top)) 22px calc(52px + env(safe-area-inset-bottom))}.dialog-title{font-size:29px}.dialog-lead{font-size:15px}.dialog-facts{grid-template-columns:1fr}.related-grid{grid-template-columns:1fr}footer{padding:24px 18px 34px;display:grid;gap:6px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}