:root{--bg:#07111f;--panel:#0c1929;--panel2:#102238;--text:#edf5ff;--muted:#7f94ad;--line:#1c3046;--accent:#41e6c0;--cell:clamp(47px,4.65vw,77px);--gap:clamp(3px,.36vw,7px);color-scheme:dark}
*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 55% -10%,#152e48 0,transparent 38%),var(--bg);color:var(--text);font-family:Inter,"Noto Sans JP",system-ui,sans-serif;min-height:100vh}button,input{font:inherit}.topbar{height:76px;padding:0 2.1vw;display:flex;align-items:center;gap:28px;border-bottom:1px solid var(--line);background:#07111eda;backdrop-filter:blur(16px);position:sticky;top:0;z-index:20}.brand{display:flex;align-items:center;gap:13px;min-width:230px}.brand h1{font-size:21px;line-height:1;margin:4px 0 0;letter-spacing:.07em}.eyebrow,.kicker{font-size:9px;letter-spacing:.24em;color:var(--accent);font-weight:800}.atom{width:42px;height:42px;position:relative}.atom i{position:absolute;inset:8px 1px;border:1px solid #58e7c7;border-radius:50%;transform:rotate(0)}.atom i:nth-child(2){transform:rotate(60deg)}.atom i:nth-child(3){transform:rotate(-60deg)}.atom 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2.1vw}.table-shell{overflow-x:auto;flex:1;padding:4px 4px 20px}.group-labels,.periodic-table{display:grid;grid-template-columns:repeat(18,var(--cell));gap:var(--gap);min-width:max-content}.group-labels{height:22px;color:#577089;font-size:8px;text-align:center}.periodic-table{grid-template-rows:repeat(7,var(--cell))}.element{position:relative;border:1px solid color-mix(in srgb,var(--c) 37%,#1c3046);border-radius:6px;background:linear-gradient(145deg,color-mix(in srgb,var(--c) 15%,#102033),#0a1726 70%);color:var(--text);cursor:pointer;text-align:left;padding:5px;overflow:hidden;transition:.18s ease}.element:hover,.element.selected{transform:translateY(-3px) scale(1.06);z-index:4;border-color:var(--c);box-shadow:0 8px 24px #0008,0 0 18px color-mix(in srgb,var(--c) 20%,transparent)}.element.dim{opacity:.13;filter:saturate(.25)}.element .num{display:block;font-size:clamp(7px,.57vw,10px);color:color-mix(in srgb,var(--c) 70%,white)}.element .symbol{display:block;font-family:Georgia,serif;font-size:clamp(17px,1.6vw,27px);line-height:1.1;font-weight:700}.element .name{display:block;font-size:clamp(6px,.52vw,9px);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:#b5c4d5}.element .weight{display:block;font-size:clamp(5px,.45vw,8px);color:#637b93;margin-top:2px}.element .state-dot{position:absolute;right:5px;top:5px;width:4px;height:4px;border-radius:50%;background:var(--state,#fff);box-shadow:0 0 7px var(--state,#fff)}.series{display:grid;grid-template-columns:calc(var(--cell)*2 + var(--gap)) repeat(15,var(--cell));gap:var(--gap);min-width:max-content;margin-top:18px}.series .label{font-size:8px;color:var(--muted);display:flex;justify-content:flex-end;align-items:center;padding-right:8px}.series .element{height:var(--cell)}.detail{position:sticky;top:92px;width:300px;min-width:300px;border:1px solid var(--line);border-radius:12px;background:linear-gradient(160deg,#10243a,#0a1625 55%);padding:18px;box-shadow:0 24px 60px #0005}.detail-top{display:flex;justify-content:space-between;align-items:center}.category-pill{font-size:9px;border-radius:99px;padding:5px 9px;background:color-mix(in srgb,var(--dc) 18%,transparent);color:var(--dc);border:1px solid color-mix(in srgb,var(--dc) 40%,transparent)}.close-detail{width:28px;height:28px}.element-hero{display:flex;align-items:center;gap:18px;margin:10px 0}.element-hero>div:first-child{width:85px;height:85px;border-radius:10px;border:1px solid var(--dc);display:flex;flex-direction:column;padding:8px;background:color-mix(in srgb,var(--dc) 12%,transparent)}.element-hero span{font-size:11px;color:var(--dc)}.element-hero strong{font:700 48px/1 Georgia}.element-hero h3{font-size:25px;margin:0}.element-hero p{font:italic 14px Georgia;color:var(--muted);margin:4px 0}.summary{font-size:11px;color:#9eb0c3;line-height:1.7;min-height:38px}.metrics{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin:15px 0}.metrics>div{padding:10px;background:#0b1929;border:1px solid #192e43;border-radius:7px}.metrics span,.metrics small{display:block;font-size:8px;color:var(--muted)}.metrics strong{font-size:16px;margin-right:3px}.facts{margin:12px 0}.facts div{display:flex;justify-content:space-between;padding:8px 2px;border-bottom:1px solid var(--line);font-size:10px}.facts dt{color:var(--muted)}.facts dd{margin:0;text-align:right;max-width:175px}.abundance{font-size:9px;color:var(--muted)}.abundance strong{float:right;color:var(--text)}.abundance div{height:4px;background:#1a2a3d;border-radius:9px;margin-top:8px;overflow:hidden}.abundance i{display:block;height:100%;width:var(--w);background:var(--dc);box-shadow:0 0 8px var(--dc)}footer{margin:22px 2.1vw 0;padding:14px 0;border-top:1px solid var(--line);display:flex;justify-content:space-between;font-size:8px;letter-spacing:.1em;color:#526b83}body.light{--bg:#eaf0f5;--panel:#fff;--panel2:#f3f7fa;--text:#102033;--muted:#60748a;--line:#cbd7e2;background:#eef3f7}.light .topbar{background:#f4f8fbdc}.light .search-wrap,.light .legend button,.light .icon-btn{background:#fff}.light .element{background:linear-gradient(145deg,color-mix(in srgb,var(--c) 20%,white),#f9fbfd 75%)}.light .element .name{color:#334c63}.light .detail{background:linear-gradient(160deg,#fff,#edf3f8)}.light .metrics>div{background:#f5f8fb}.light .element:hover{box-shadow:0 8px 24px #40556b35}
@media(max-width:1100px){.workspace{display:block}.detail{position:fixed;right:14px;bottom:14px;top:auto;z-index:30;max-height:78vh;overflow:auto;box-shadow:0 20px 80px #000c}.detail.hidden{display:none}.temperature{display:none}}
@media(max-width:650px){.topbar{height:64px;padding:0 12px;gap:10px}.brand{min-width:auto}.brand .atom,.brand .eyebrow,.stat{display:none}.brand h1{font-size:17px}.search-wrap{padding:8px}.search-wrap kbd{display:none}.intro{padding:18px 12px 10px}.intro h2{font-size:25px}.lead{font-size:10px}.legend,.workspace{padding-left:12px;padding-right:12px}.detail{left:10px;right:10px;width:auto;min-width:0}.group-labels,.periodic-table{--cell:52px;--gap:4px}.series{--cell:52px;--gap:4px}}
.detail.hidden{display:none}
.light .close-detail{background:#fff;color:#102033}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}