html{scroll-behavior:smooth;scroll-padding-top:20px}body{background:#f8f5ee;color:#173f38}.site-nav{display:flex;align-items:center;justify-content:space-between;padding:18px 5%;gap:20px;background:#f8f5ee}.brand{display:flex;align-items:center;gap:12px;color:#173f38;text-decoration:none;font-weight:800;letter-spacing:2px}.element-logo{display:flex;flex-direction:column;justify-content:center;width:52px;height:58px;border:1px solid #275b4c;padding:5px 9px;font-size:25px;font-weight:700;line-height:1.1;flex-shrink:0}.element-logo small{font-size:10px;font-weight:400}.brand-sub{display:block;font-size:9px;letter-spacing:1.4px;margin-top:5px}.site-nav nav{display:flex;gap:28px}.site-nav nav a{color:#173f38;text-decoration:none;font-size:14px}.hero{position:relative;min-height:620px;display:flex;align-items:center;isolation:isolate;background:#173f38;overflow:hidden}.hero-image{position:absolute;inset:0;background:url('park-entrance.webp') center/cover;z-index:-2}.hero:after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,35,30,.88),rgba(8,35,30,.42) 54%,rgba(8,35,30,.08));z-index:-1}.hero-copy{padding:70px 7%;color:white;width:100%}.eyebrow{font-size:12px;letter-spacing:2.5px;text-transform:uppercase;color:#ffe4a1;display:block}.hero h1{font-size:clamp(48px,7.4vw,108px);font-weight:650;letter-spacing:-4px;line-height:.99;margin:28px 0}.hero h1 span{display:block;color:#ffc852}.hero-copy>p{font-size:clamp(20px,2.1vw,29px);line-height:1.45;margin:25px 0}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:34px 0 18px}.action{border:0;border-radius:8px;padding:15px 22px;min-height:48px;font-weight:600;transition:transform .15s;cursor:pointer}.action:hover{transform:translateY(-2px)}.sunny{background:#ffca58;color:#193c32}.glass{background:rgba(255,255,255,.16);color:white;border:1px solid #ffffff70;backdrop-filter:blur(8px)}.hero-note{font-size:12px;color:#eff5e6}.image-note{position:absolute;bottom:16px;right:24px;font-size:11px;color:white;background:#173f3880;padding:5px 9px}.intro{display:grid;grid-template-columns:1fr 1.15fr;gap:9%;max-width:1260px;margin:auto;padding:88px 6%}.ink{color:#517669}.intro h2,.section-heading h2,.closing h2{font-size:clamp(29px,3.4vw,46px);line-height:1.12;letter-spacing:-1.4px;font-weight:600;margin:20px 0}.intro p{font-size:16px;line-height:1.7;color:#53695f;max-width:490px}.steps{list-style:none;padding:0;margin:0;display:grid;gap:25px}.steps li{display:flex;gap:20px}.steps li>span{font-size:13px;color:#a66b28;padding-top:5px}.steps h3{font-size:19px;margin:0 0 7px;font-weight:600}.steps p{font-size:14px;margin:0;line-height:1.6}.explore{padding:54px 4% 64px;background:#e8eee7}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;max-width:1400px;margin:auto}.section-heading h2{font-size:clamp(27px,3vw,40px)}.help-button{background:transparent;border:1px solid #8ba396;color:#173f38;border-radius:24px;padding:12px 18px;white-space:nowrap;min-height:44px}.tour-toolbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:14px 0 20px}.forest{background:#1d5446;color:#fff}.pale{background:#f8f5ee;color:#173f38}.tour-toolbar>span{font-size:12px;color:#456358;margin-left:auto}.quick-help{padding:8px 22px;border-left:3px solid #d9a43d;background:#f8f5ee;margin:16px 0;font-size:14px;line-height:1.6}.quick-help[hidden]{display:none}#mendeleev-clean-overview .mp-stage{border-radius:14px;box-shadow:0 16px 44px #14372d1a}body.park-expanded .mp-stage{border-radius:0!important}.closing{display:flex;align-items:center;gap:28px;padding:60px 7%;background:#164c40;color:#fff}.closing .element-logo{border-color:#e8c576;color:#e8c576}.closing h2{font-size:30px;margin:0 0 10px}.closing p{color:#c5dace;margin:0}.closing a{margin-left:auto;color:#fff;white-space:nowrap}footer{padding:30px!important;font-size:13px!important;line-height:1.8}footer span{font-size:11px;display:block;max-width:660px;margin:10px auto 0}[data-map-guide]{background:#f8f5ee;border-radius:12px;margin-top:18px!important}[data-map-guide]>summary{font-size:15px;font-weight:600;padding:6px}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #db9f35;outline-offset:4px}@media(max-width:700px){.site-nav{padding:14px 5%}.site-nav nav a[href="#guide"]{display:none}.site-nav nav{gap:12px;flex-wrap:wrap;justify-content:flex-end}.site-nav nav a{font-size:12px}.brand{font-size:12px;letter-spacing:1px}.brand-sub{font-size:8px;letter-spacing:.5px}.element-logo{width:43px;height:48px;font-size:22px}.hero{min-height:590px}.hero-copy{padding:50px 6% 70px}.hero h1{letter-spacing:-2px}.hero-image{background-position:60% center}.hero:after{background:linear-gradient(90deg,#092c24d9,#092c2460)}.hero-actions{flex-direction:column;align-items:stretch;max-width:350px}.intro{grid-template-columns:1fr;gap:34px;padding:48px 6%}.intro h2 br{display:none}.section-heading{align-items:flex-start;flex-direction:column;gap:0}.explore{padding:36px 12px}.section-heading{padding:0 8px}.tour-toolbar>span{margin-left:0;width:100%;line-height:1.5}.tour-toolbar .action{padding:12px 16px}.closing{padding:35px 6%;gap:18px;flex-wrap:wrap}.closing h2{font-size:24px}.closing p{font-size:14px}.closing a{margin-left:61px;font-size:14px}.eyebrow{font-size:10px;letter-spacing:1.6px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.action{transition:none}}

/* Approved original landing retained; highlight only the existing album link. */
.site-nav nav{align-items:center}.site-nav nav a.album-highlight{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:12px 17px;background:#ffca58;color:#173f38;border-radius:9px;font-weight:750;white-space:nowrap;box-shadow:0 3px 10px #6b48151c}.site-nav nav a.album-highlight:hover{background:#ffdb8b}.site-nav nav a.album-highlight:focus-visible{outline:3px solid #173f38;outline-offset:3px}@media(max-width:700px){.site-nav nav a.album-highlight{padding:10px 13px}}

.park-concept .mp-story{padding:56px 6% 42px;background:light-dark(#f4eddf,#183d33);color:light-dark(#173f38,#f1ecdf)}
.park-concept .mp-story-label{display:block;font-size:11px;letter-spacing:2px;color:light-dark(#6e6753,#d9c59d)}
.park-concept .mp-story-lead{display:grid;grid-template-columns:1fr 1.12fr;gap:6%;align-items:start}
.park-concept .mp-story h2{font-size:clamp(29px,4cqw,43px);font-weight:550;line-height:1.15;letter-spacing:-1.4px;color:inherit;margin:20px 0 28px}
.park-concept .mp-story h2 em{font-family:Georgia,serif;font-weight:400;color:light-dark(#947031,#e6c580)}
.park-concept .mp-story p{color:inherit;font-size:15px;line-height:1.75;margin:0 0 16px}
.park-concept .mp-story .mp-story-first{font-size:20px;line-height:1.45;font-weight:500}
.park-concept .mp-route-heading{font-size:10px;letter-spacing:2px;color:light-dark(#6e6753,#d9c59d);margin:23px 0 22px}
.park-concept .mp-story-route{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:15px;list-style:none;margin:0 0 28px;padding:0}
.park-concept .mp-story-route li{position:relative;padding-top:12px;border-top:2px solid light-dark(#b29b6a,#927c4c)}
.park-concept .mp-story-route li span{display:block;font-size:12px;color:light-dark(#8e6d31,#dcb875);margin-bottom:10px}
.park-concept .mp-story-route strong{display:block;color:inherit;font-size:14px;line-height:1.3;font-weight:600;min-height:37px}
.park-concept .mp-story-route small{display:block;font-size:12px;line-height:1.6;margin-top:6px;color:light-dark(#526858,#c8d7ce)}
.park-concept .mp-story-more summary{display:flex;align-items:center;gap:22px;width:fit-content;list-style:none;min-height:46px;padding:13px 20px;background:light-dark(#174d40,#ead4a0);color:light-dark(#fff,#173c31);border-radius:8px;font-size:14px;font-weight:550;cursor:pointer}
.park-concept .mp-story-more summary::-webkit-details-marker{display:none}.park-concept .mp-collapse-label{display:none}.park-concept .mp-story-more[open] .mp-read-label{display:none}.park-concept .mp-story-more[open] .mp-collapse-label{display:inline}.park-concept .mp-story-more[open] .mp-more-arrow{transform:rotate(180deg)}
.park-concept .mp-story-article{max-width:760px;margin:30px auto 0}.park-concept .mp-story-article h3{color:inherit;font-size:23px;line-height:1.3;margin:28px 0 18px}.park-concept .mp-story .mp-story-ending{font-size:21px;font-family:Georgia,serif;line-height:1.5;color:light-dark(#184c3f,#e6c580);margin-top:26px}
.park-concept .mp-visit{padding:55px 6%;display:grid;grid-template-columns:1fr 1.12fr;gap:6%;background:light-dark(#f8f5ee,#122e27);color:light-dark(#173f38,#f1ecdf)}.park-concept .mp-visit h2{color:inherit;font-size:34px;line-height:1.15;letter-spacing:-1px;margin:18px 0}.park-concept .mp-visit p{color:inherit;font-size:14px;line-height:1.65}.park-concept .mp-visit ol{padding-left:24px;margin:0}.park-concept .mp-visit li{padding-left:8px;margin-bottom:20px}.park-concept .mp-visit li::marker{color:light-dark(#96702f,#e6c580)}.park-concept .mp-visit strong{color:inherit;font-size:17px;font-weight:550}.park-concept .mp-visit li p{margin:7px 0}
.park-concept .mp-viewer{max-height:760px;min-height:600px}.park-concept .mp-viewer:fullscreen{max-height:none}
@container(max-width:700px){.park-concept .mp-story{padding:38px 6%}.park-concept .mp-story-lead,.park-concept .mp-visit{grid-template-columns:1fr;gap:24px}.park-concept .mp-story h2{margin-bottom:0}.park-concept .mp-story-route{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px 12px}.park-concept .mp-story-route strong{min-height:0}.park-concept .mp-story .mp-story-first{font-size:19px}.park-concept .mp-visit{padding:38px 6%}}
@container(max-width:380px){.park-concept .mp-story-route{grid-template-columns:repeat(2,minmax(0,1fr))}}
.park-concept .mp-mendeleev-portrait{margin:22px 0 0;width:220px;max-width:100%}
.park-concept .mp-mendeleev-portrait img{display:block;width:100%;height:auto;border-radius:8px}
.park-concept .mp-mendeleev-portrait figcaption{font-size:11px;line-height:1.5;margin-top:9px;color:light-dark(#526858,#c8d7ce)}

.park-concept{container-type:inline-size;color-scheme:light}.hero-copy>p{color:#fff}

.park-concept .mp-story-lead{grid-template-columns:minmax(250px,.7fr) minmax(0,1.6fr);gap:6%}
.park-concept .mp-discoveries{margin-top:28px}
.park-concept .mp-discoveries>h3{color:inherit;font-size:20px;line-height:1.35;font-weight:550;letter-spacing:-.3px;margin:0 0 18px}
.park-concept .mp-discovery-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;align-items:start}
.park-concept .mp-discovery{background:light-dark(#fbf8f1,#21483c);color:light-dark(#173f38,#f1ecdf);padding:17px;border-radius:10px;min-width:0}
.park-concept .mp-discovery-art{height:70px;display:flex;align-items:center;justify-content:space-between;color:light-dark(#976c29,#e5c07d);border-bottom:1px solid light-dark(#dfd3b8,#526750);margin-bottom:17px;padding-bottom:10px}
.park-concept .mp-discovery-art svg{width:30px;height:30px;stroke-width:1.4}
.park-concept .mp-discovery-art>span{font:32px Georgia,serif;letter-spacing:-1px}
.park-concept .mp-discovery h4{color:inherit;font-size:17px;line-height:1.3;font-weight:600;margin:0 0 12px;min-height:44px}
.park-concept .mp-discovery>p{font-size:13px;line-height:1.6;min-height:63px;margin:0 0 15px;color:inherit}
.park-concept .mp-discovery>small{display:block;min-height:36px;font-size:11px;line-height:1.6;color:light-dark(#796237,#dfc58f)}
.park-concept .mp-discovery summary{display:flex;align-items:center;justify-content:space-between;min-height:44px;gap:6px;list-style:none;font-size:12px;font-weight:600;color:inherit;border-top:1px solid light-dark(#dfd3b8,#526750);margin-top:12px}
.park-concept .mp-discovery summary::-webkit-details-marker{display:none}
.park-concept .mp-discovery details[open] summary>span{transform:rotate(180deg)}
.park-concept .mp-discovery details p{font-size:13px;line-height:1.65;margin:10px 0;color:inherit}
@container(max-width:820px){.park-concept .mp-story-lead{grid-template-columns:1fr;gap:28px}.park-concept .mp-discovery-grid{gap:10px}}
@container(max-width:540px){.park-concept .mp-discovery-grid{grid-template-columns:1fr}.park-concept .mp-discovery h4,.park-concept .mp-discovery>p,.park-concept .mp-discovery>small{min-height:0}.park-concept .mp-discovery-art{height:55px}.park-concept .mp-story{padding-top:54px}}
.park-concept .mp-tobolsk-quote{margin:26px 0 0;padding:4px 0 4px 19px;border-left:3px solid light-dark(#b89a5c,#d6b56d)}
.park-concept .mp-tobolsk-quote blockquote{margin:0;padding:0;border:0;background:transparent;font:italic 21px/1.5 Georgia,serif;color:light-dark(#315044,#eedebd)}
.park-concept .mp-tobolsk-quote figcaption{margin-top:13px;font-size:12px;line-height:1.6;color:light-dark(#526858,#c8d7ce)}
.park-concept .mp-tobolsk-quote small{display:block;font-size:10px;margin-top:3px}
/* Preliminary concept notice: beside the hero on desktop, below on narrow screens. */
.hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,320px);gap:32px;padding-right:5%;align-items:center}
.hero .concept-notice{align-self:center;padding:24px;background:rgba(12,45,37,.92);color:#fff;border:1px solid #d9c08b66;border-radius:12px;margin:30px 0 60px;box-shadow:0 12px 30px #071b1820}
.hero .concept-notice-label{display:block;font-size:10px;letter-spacing:2px;color:#f0ce8b;margin-bottom:12px}
.hero .concept-notice h2{font-size:21px;font-weight:550;line-height:1.25;letter-spacing:-.3px;color:#fff;margin:0 0 14px}
.hero .concept-notice p{font-size:14px;line-height:1.75;color:#f2f5ef;margin:0}
@media(max-width:1050px){.hero{grid-template-columns:minmax(0,1fr);gap:0;padding-right:0}.hero .concept-notice{width:min(480px,88%);justify-self:end;margin:0 6% 65px}.hero-copy{padding-bottom:35px}}
@media(max-width:600px){.hero .concept-notice{padding:20px}.hero .concept-notice h2{font-size:20px}.hero .concept-notice p{font-size:13px}}

.hero .concept-notice p+p{margin-top:12px}