/* 阆苑山河与历法文化：矢量风物、按需交互，不增加持续 JavaScript 动画循环。 */
.hero-landscape{position:absolute;left:-3%;bottom:-30px;width:76%;height:60%;object-fit:cover;object-position:50% 80%;opacity:.13;z-index:-1;pointer-events:none;mask-image:linear-gradient(transparent,#000 65%)}
.heritage-invitation{display:flex;align-items:center;gap:10px;font:11px/1.6 var(--serif);color:var(--gold);margin-top:17px;letter-spacing:.08em}.heritage-invitation>span{border:1px solid var(--red);color:var(--red);padding:3px 4px;font-size:14px}.heritage-invitation b{font-weight:normal;margin-left:4px}.hero-copy .hero-cta{margin-top:23px}.heritage-section{--season:#90d6b6;--season-faint:rgba(144,214,182,.08);border-block:1px solid var(--line);background:linear-gradient(180deg,var(--surface),var(--bg));position:relative;overflow:hidden}.heritage-section[data-season=summer]{--season:#ddb67c;--season-faint:rgba(221,182,124,.09)}.heritage-section[data-season=autumn]{--season:#d9a078;--season-faint:rgba(217,160,120,.08)}.heritage-section[data-season=winter]{--season:#a6c9dc;--season-faint:rgba(166,201,220,.08)}
.heritage-layout{display:grid;grid-template-columns:1.18fr 1fr;gap:24px}.land-panel,.calendar-panel{border:1px solid var(--line);background:var(--bg);min-width:0}.heritage-panel-top{display:flex;justify-content:space-between;align-items:center;padding:18px 23px;border-bottom:1px solid var(--line);gap:10px}.heritage-panel-top>span{font:15px var(--serif);color:var(--gold);letter-spacing:.12em}.heritage-panel-top small{font:8px var(--mono);letter-spacing:.08em;color:var(--dim)}.land-art{position:relative;isolation:isolate;background:radial-gradient(ellipse at 50% 60%,var(--season-faint),transparent 80%);overflow:hidden;margin-top:10px;min-height:300px;display:grid;align-items:center;transition:background .4s}.land-art>img{width:100%;height:auto;position:relative;z-index:1;transition:opacity .4s,transform .6s}.land-calligraphy{position:absolute;top:7%;left:5%;font:clamp(24px,3vw,46px) var(--serif);color:var(--gold);writing-mode:vertical-rl;letter-spacing:.2em;opacity:.6}.map-note{position:absolute;bottom:5px;right:22px;font:8px var(--mono);color:var(--dim);z-index:2}.river-glint{position:absolute;left:12%;right:12%;top:58%;height:15%;border-bottom:1px solid var(--season);border-radius:0 0 50% 50%;opacity:.3;transform:rotate(-4deg);transition:opacity .35s,transform .35s}.heritage-section[data-land=mountain] .river-glint{opacity:0}.heritage-section[data-land=mountain] .land-art>img{transform:translateY(5px) scale(1.025)}.heritage-section[data-land=city] .land-art>img{transform:scale(1.045)}.heritage-section[data-land=city] .river-glint{opacity:.12}
.land-controls{display:flex;gap:8px;padding:23px 22px 0;flex-wrap:wrap}.land-controls button{font-size:10px;background:transparent;border:1px solid var(--line);color:var(--dim);padding:8px 10px;transition:background .2s,color .2s}.land-controls button[aria-pressed=true]{color:var(--jade);background:var(--surface2);border-color:var(--jade)}.land-description,.season-description{padding:22px 24px 26px}.land-description h3,.season-description h3{font:22px/1.5 var(--serif);margin-bottom:10px;color:var(--ink)}.land-description p,.season-description p{font-size:11px;line-height:2;color:var(--muted)}.calendar-panel{background:radial-gradient(ellipse at 50% 34%,var(--season-faint),transparent 65%),var(--bg)}.season-dial{width:min(370px,calc(100% - 36px));aspect-ratio:1;position:relative;margin:22px auto 14px;--term-angle:0deg}.dial-rings{position:absolute;inset:12%;border:1px solid var(--line);border-radius:50%;background:repeating-conic-gradient(from -1deg,var(--line) 0 1deg,transparent 1deg 15deg);mask-image:radial-gradient(circle,transparent 63%,#000 63%)}.season-dial:before{content:"";position:absolute;inset:22%;border-radius:50%;border:1px solid var(--line);box-shadow:0 0 0 14px var(--season-faint)}.season-dial:after{content:"";position:absolute;inset:5%;border:1px solid var(--line);border-radius:50%;pointer-events:none;opacity:.4}.dial-pointer{position:absolute;inset:17%;transform:rotate(var(--term-angle));transition:transform .6s cubic-bezier(.22,.65,.28,1);pointer-events:none}.dial-pointer:before{content:"";position:absolute;left:50%;top:0;width:1px;height:22%;background:linear-gradient(var(--season),transparent)}.dial-pointer:after{content:"";position:absolute;top:-2px;left:calc(50% - 3px);width:6px;height:6px;background:var(--season);border-radius:50%;box-shadow:0 0 14px var(--season)}.term-buttons{position:absolute;inset:0}.term-button{position:absolute;left:var(--x);top:var(--y);transform:translate(-50%,-50%);background:var(--bg);color:var(--dim);font:12px/1.4 var(--serif);padding:7px 4px;letter-spacing:.05em;border:1px solid transparent;border-radius:4px;min-width:32px;transition:color .2s,border-color .2s}.term-button.in-season{color:var(--season)}.term-button[aria-pressed=true]{color:var(--season);border-color:var(--season);background:var(--surface2)}.term-button:hover{color:var(--ink)}.dial-center{position:absolute;inset:30%;display:flex;align-items:center;justify-content:center;flex-direction:column;pointer-events:none;text-align:center}.dial-center>span{font:10px var(--serif);letter-spacing:.2em;color:var(--gold);white-space:nowrap}.dial-center strong{font:46px/1.3 var(--serif);color:var(--season);margin:12px 0;white-space:nowrap;font-weight:normal}.dial-center small{font:8px var(--mono);letter-spacing:.1em;color:var(--dim);white-space:nowrap}.season-controls{display:grid;grid-template-columns:repeat(4,1fr);margin:0 24px;border:1px solid var(--line)}.season-controls button{background:transparent;color:var(--dim);font:15px var(--serif);padding:10px 8px;border-right:1px solid var(--line)}.season-controls button:last-child{border-right:0}.season-controls button[aria-pressed=true]{color:var(--season);background:var(--season-faint)}.season-description{padding-bottom:12px}.season-description h3{font-size:21px}.calendar-disclaimer{font-size:9px;line-height:1.9;color:var(--dim);padding:0 24px 22px}.heritage-history{display:flex;gap:35px;align-items:center;border-block:1px solid var(--line);padding:28px 0;margin-top:32px}.history-year{min-width:130px}.history-year>span{font:13px var(--serif);color:var(--gold);letter-spacing:.2em}.history-year strong{display:block;font:32px var(--mono);color:var(--jade);margin:10px 0}.history-year small{font:9px var(--mono);color:var(--dim)}.heritage-history h3{font:24px var(--serif);margin-bottom:13px}.heritage-history p{color:var(--muted);font-size:12px;line-height:2;max-width:770px}.history-seal{border:1px solid var(--red);outline:1px solid var(--red);outline-offset:-5px;padding:12px 10px;color:var(--red);font:21px/1.25 var(--serif);white-space:nowrap;transform:rotate(-4deg);margin-left:auto}.heritage-sources{margin-top:22px}.heritage-sources summary{display:flex;justify-content:space-between;list-style:none;font:11px var(--mono);color:var(--dim)}.heritage-sources summary::-webkit-details-marker{display:none}.heritage-sources[open] summary span{transform:rotate(45deg)}.heritage-sources>p{font-size:11px;line-height:2;color:var(--muted);margin-block:20px}.heritage-sources>div{display:flex;gap:16px 25px;flex-wrap:wrap}.heritage-sources a{color:var(--jade);font-size:10px;border-bottom:1px solid var(--line)}
html[data-theme=light] .heritage-section{--season:#287958;--season-faint:rgba(40,121,88,.055)}html[data-theme=light] .heritage-section[data-season=summer]{--season:#886028;--season-faint:rgba(136,96,40,.06)}html[data-theme=light] .heritage-section[data-season=autumn]{--season:#a35e37;--season-faint:rgba(163,94,55,.055)}html[data-theme=light] .heritage-section[data-season=winter]{--season:#3d6c83;--season-faint:rgba(61,108,131,.055)}html[data-theme=light] .land-art>img{filter:brightness(.72) saturate(1.2)}html[data-theme=light] .hero-landscape{opacity:.2;filter:brightness(.7)}
@media(max-width:1100px){.heritage-layout{gap:16px;grid-template-columns:1fr 1fr}.heritage-panel-top{padding:17px}.land-controls{padding-inline:17px;gap:5px}.land-controls button{padding:8px;font-size:9px}.land-description,.season-description{padding-inline:19px}.heritage-invitation{font-size:10px}.nav-links{gap:17px}}
@media(max-width:800px){.heritage-layout{grid-template-columns:1fr}.land-art{min-height:0}.land-art>img{max-height:430px;object-fit:contain}.land-description{padding-bottom:26px}.land-controls button{font-size:11px}.calendar-panel{padding-bottom:5px}.season-dial{width:min(400px,calc(100% - 40px))}.heritage-history{gap:25px}.history-seal{display:none}.heritage-invitation{letter-spacing:0;gap:7px;font-size:10px}.hero-landscape{width:110%;height:55%;opacity:.1}}
@media(max-width:580px){.heritage-invitation{font-size:10px;margin-top:15px}.hero-landscape{width:170%;left:-45%;height:40%;bottom:60px;opacity:.13}.heritage-panel-top small{font-size:7px}.heritage-panel-top>span{font-size:14px}.land-calligraphy{font-size:27px}.land-controls{padding:17px 14px 0;gap:5px}.land-controls button{font-size:9px;padding:9px 6px;flex:1}.land-description,.season-description{padding:20px 18px}.land-description h3,.season-description h3{font-size:21px}.map-note{font-size:7px;right:15px}.season-dial{width:calc(100% - 20px);margin-block:18px}.term-button{font-size:11px;padding:6px 2px;min-width:28px}.dial-center strong{font-size:38px}.dial-center>span{font-size:9px}.dial-center small{font-size:7px}.season-controls{margin-inline:18px}.calendar-disclaimer{padding:0 18px 18px}.heritage-history{align-items:flex-start;gap:20px}.history-year{min-width:76px}.history-year strong{font-size:21px}.history-year>span{font-size:11px}.history-year small{font-size:7px}.heritage-history h3{font-size:20px;line-height:1.5}.heritage-history p{font-size:11px}.heritage-sources a{font-size:10px}}
@media(prefers-reduced-motion:reduce){.dial-pointer,.land-art>img,.river-glint{transition:none}}