/* Arithmos at blue hour: the interface is quiet, the mathematics carries the detail. */
:root{--bg:#171721;--panel:#1e1e2a;--plot:#1b1b27;--line:#363642;--text:#ededf3;--muted:#c3c3cc;--mint:#ededf3;--cobalt:#5266eb;--surface:#272735;--serif:'DM Sans',Arial,sans-serif;--body:'DM Sans',Arial,sans-serif;--header-height:88px;color-scheme:dark}
body{background:var(--bg);font-weight:400;line-height:1.5}main{max-width:1440px;padding:0 48px}h1,h2,h3{font-family:var(--body);font-weight:450;letter-spacing:-.035em}h1 em{font-style:normal;color:var(--muted)}a:hover,button:hover{color:var(--text)}button,a,input,select{touch-action:manipulation}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--text);outline-offset:5px}::selection{background:#5266eb88;color:#fff}.eyebrow{font:400 12px/1.7 var(--body);letter-spacing:.12em;color:var(--muted)}
.site-header{height:var(--header-height);padding:0 max(48px,calc((100vw - 1344px)/2));gap:32px;background:#171721ed;border:0;backdrop-filter:blur(20px)}.site-brand{font:500 27px/1 var(--body);letter-spacing:-1px;gap:11px;color:var(--text)}.brand-mark{width:25px;height:25px}.header-caption{font:400 14px var(--body);text-transform:none;letter-spacing:0;color:var(--muted)}.site-links{gap:8px;font-size:14px;color:var(--muted)}.site-links a{border-radius:40px;padding:10px 20px;transition:background .2s}.site-links a[aria-current=page],.site-links a:hover{background:var(--surface);color:var(--text)}.mode-switch{padding:5px;border:0;border-radius:40px;background:var(--surface)}.mode-switch a{min-width:98px;padding:9px 22px;border-radius:32px;font-size:14px;color:var(--muted)}.mode-switch a[aria-current=page]{background:var(--text);color:var(--bg)}.mode-switch a:hover:not([aria-current=page]){background:#343442;color:var(--text)}.skip-link{background:var(--text);color:var(--bg);border-radius:32px}
.site-footer{border-color:var(--line);padding:32px 0!important;margin-top:72px;color:var(--muted)}.footer-wordmark{color:var(--text);font-weight:450;font-size:20px}.site-footer small,.site-footer>a{color:var(--muted);font-size:13px}.footer-identity small{margin-left:0}
/* A compact, genuine mathematical landscape, with the collection immediately below. */
.gallery-hero{display:grid;grid-template-columns:1fr 1.1fr;gap:56px;padding:36px 0 48px;align-items:center}.gallery-hero h1{font-size:clamp(36px,4.25vw,62px)!important;font-weight:450;line-height:1.08;letter-spacing:-.045em;margin:18px 0 20px!important}.gallery-hero .eyebrow{font-size:12px;color:var(--muted);letter-spacing:.12em}.gallery-hero p{font-size:17px;line-height:1.65;color:var(--muted)}.hero-feature{position:relative;display:block;overflow:hidden;border-radius:12px;isolation:isolate;min-height:288px;background:var(--panel)}.hero-feature img{position:absolute;inset:0;object-fit:cover;width:100%;height:100%;transition:transform 1.2s ease;opacity:.85}.hero-feature:hover img{transform:scale(1.045)}.hero-feature:after{content:'';position:absolute;inset:0;z-index:-1;background:linear-gradient(0deg,#171721,transparent)}.hero-feature-caption{position:absolute;inset:auto 28px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;background:linear-gradient(0deg,#17172199,transparent)}.hero-feature-caption small{display:block;font-size:11px;letter-spacing:.1em;color:var(--muted);margin-bottom:5px}.hero-feature-caption strong{font-weight:450;font-size:23px;letter-spacing:-.025em}.feature-go{background:var(--cobalt);color:#fff;width:44px;height:44px;border-radius:50%;display:grid;place-items:center;font-size:22px;flex-shrink:0}
.collection-heading{display:flex;align-items:baseline;justify-content:space-between;gap:18px;margin:0 0 23px}.collection-heading h2{font-size:26px;margin:0;letter-spacing:-.03em}.collection-heading>span{font-size:14px;color:var(--muted)}.gallery-controls{padding:0;gap:20px}#gallery-search{background:var(--surface);border:1px solid transparent;border-radius:32px;padding:13px 22px;max-width:440px;font-size:15px;min-height:48px}#gallery-search::placeholder{color:var(--muted)}#gallery-search:focus{border-color:#858593}.filter-summary{gap:20px}#result-count{font:400 14px var(--body);color:var(--muted)}#clear-filters{font-size:14px;color:var(--text);border:0;text-decoration:underline;text-underline-offset:4px}#topic-tabs{gap:6px;margin:18px 0 26px;padding:4px 0 8px;scrollbar-width:thin;scrollbar-color:#454553 transparent}#topic-tabs button{font-size:14px;padding:10px 16px;border:0;background:transparent;color:var(--muted);min-height:42px}#topic-tabs button[aria-pressed=true]{background:var(--text);color:var(--bg)}#topic-tabs button:hover:not([aria-pressed=true]){background:var(--surface);color:var(--text)}
.home-grid{gap:24px;grid-template-columns:repeat(3,minmax(0,1fr))}.shape-card{display:flex;flex-direction:column;border:0;border-radius:12px;background:var(--panel);transition:background .25s,transform .25s}.shape-card:hover{background:#242430;transform:translateY(-3px)}.shape-preview{height:260px;background:var(--panel);border:0;margin:8px 8px 0;border-radius:8px;overflow:hidden}.shape-preview canvas{mix-blend-mode:normal}.card-number{background:transparent;color:var(--muted);font:12px var(--mono);top:14px;left:14px;padding:0}.card-open{border-radius:32px;background:var(--surface);color:var(--text);font-size:13px;padding:10px 15px;right:15px;bottom:12px}.shape-content{display:flex;flex-direction:column;flex:1;padding:24px 28px 26px}.shape-topic{font:400 12px var(--body);letter-spacing:.04em;text-transform:none;color:var(--muted)}.shape-content h2{font:450 27px/1.2 var(--body);letter-spacing:-.035em;margin:12px 0 14px;min-height:65px}.shape-content p{font-size:15px;line-height:1.65;color:var(--muted);min-height:74px;margin:0 0 25px;flex:1}.shape-bottom{padding:0;border:0;gap:10px}.shape-bottom a,.shape-bottom a:first-child,.shape-bottom a:last-child{display:flex;align-items:center;justify-content:space-between;border:0;border-radius:32px;background:var(--surface);color:var(--text);font-size:14px;padding:12px 18px}.shape-bottom a:last-child{background:transparent;box-shadow:inset 0 0 0 1px #626270}.shape-bottom a:hover{background:#3c3c4c}.shape-bottom a span{font-size:16px}#empty-results{background:var(--panel);border-radius:12px;font-size:16px}
/* Graphic workspace */
.page-intro,.lesson-intro{padding:32px 0}.page-intro h1,.lesson-intro h1{font-size:clamp(32px,3.5vw,48px);font-weight:450;letter-spacing:-.04em;margin:12px 0;line-height:1.15}.page-intro p,#lesson-deck,.lesson-intro #lesson-deck{font-size:17px;color:var(--muted);line-height:1.65;max-width:790px}.shape-chooser{flex-basis:240px}.shape-chooser label{font:400 12px var(--body);color:var(--muted);text-transform:none;letter-spacing:0}.shape-chooser select,#preset-choice,#foundation-preset{background:var(--surface);color:var(--text);border:0;border-radius:24px;padding:12px 18px;font-size:14px;min-height:44px}.explore-page .experiment{border:0;background:var(--panel);border-radius:12px}.explore-page .plot-heading{border-color:var(--line);padding:14px 24px}.canvas-label{font:400 13px var(--body);color:var(--muted);text-transform:none;letter-spacing:0}.canvas-wrap{background:var(--plot)}.explore-page .canvas-wrap{height:clamp(340px,50vh,600px)}.plot-badge{border:0;background:#171721b0;color:var(--muted);font-size:12px;border-radius:20px}.plot-badge>span:first-child{display:none}.axis-label{color:var(--muted);font-size:13px}.plot-tools{background:#272735eb;border:0;border-radius:30px;gap:5px;padding:6px}.plot-tools button{width:32px;height:32px;border-radius:50%}.plot-tools button:hover{background:#3a3a48}.plot-tools output{font-size:12px}.transport,.statline{border-color:var(--line);background:var(--panel)}.explore-page .transport{padding:16px 24px;gap:16px}.play-button{width:42px;height:42px;background:var(--cobalt);color:#fff!important;font-weight:400}.icon-button{border:0;background:var(--surface);border-radius:50%;width:38px;height:38px}.transport input,.construction-scrubber input,.parameter input{accent-color:var(--text)}input[type=range]::-webkit-slider-thumb{background:var(--text)}input[type=range]::-webkit-slider-runnable-track{background:#51515f}#speed{border:0;border-radius:24px;background:var(--surface);color:var(--text);min-height:40px;font-size:14px}.timeline-label,#progress-value{color:var(--muted);font-size:13px}.explore-page .parameters{padding:24px 28px;gap:32px}.parameter label,.palette-control>span{font-size:14px;color:var(--muted)}.palette{width:24px;height:24px;border-color:var(--panel)}.palette.moonlight{background:linear-gradient(135deg,#ededf3,#808194)}.statline{font:400 13px/1.6 var(--body);color:var(--muted)}#hover-tip{background:var(--surface);border-color:#70707d;color:var(--text);border-radius:8px}.related-section{padding-top:48px}.section-heading h2{font-size:28px}.section-heading>a{font-size:14px;color:var(--muted)}.related-card{background:var(--panel);border:0}.related-card:hover{background:var(--surface)}.related-card canvas{background:var(--panel)}.card-info{padding:24px}.related-card h3{font:450 24px/1.25 var(--body);letter-spacing:-.03em}.card-info p{font-size:14px;color:var(--muted)}
/* The lesson is a reading room: a clear sequence, a generous figure, quiet supporting surfaces. */
.lesson-main{max-width:1440px}.concept-tools{margin-top:25px;gap:16px}.concept-tools>span{font-size:14px;color:var(--muted)}#concept-buttons button{border:0;border-radius:24px;background:var(--surface);font-size:14px;color:var(--text);padding:10px 15px}#concept-buttons button span{color:var(--muted)}#concept-buttons button[aria-expanded=true]{background:var(--text);color:var(--bg)}#concept-buttons button[aria-expanded=true] span{color:var(--bg)}#concept-definition{border:0;border-radius:12px;padding:20px 24px;background:var(--panel);color:var(--muted);font-size:16px}#concept-definition strong{color:var(--text);font-weight:500}.lesson-layout{grid-template-columns:175px minmax(0,.9fr) minmax(0,1.1fr);gap:28px 32px;border-top:1px solid var(--line);padding:32px 0 48px}.chapter-nav{top:112px}.chapter-nav .eyebrow{font-size:11px;color:var(--muted)}#chapters button{border:0;border-radius:12px;gap:12px;margin:0 0 8px;padding:12px 14px;font-size:14px;color:var(--muted)}#chapters button>span:first-child{color:var(--muted);font-size:12px}#chapters button[aria-current=step]{background:var(--surface);color:var(--text)}#chapters button:hover{background:var(--panel)}.chapter-count{font:400 12px var(--body);letter-spacing:.05em;color:var(--muted)}.chapter-heading h2{font:450 36px/1.2 var(--body);letter-spacing:-.035em;color:var(--text);margin:12px 0}.chapter-heading>p{font-size:19px;color:var(--muted);line-height:1.7}.chapter-reading>.eyebrow{font-size:11px;color:var(--muted)}#chapter-body p,.chapter-reading>p{font-size:16px;line-height:1.85;color:var(--muted)}.worked-example{background:var(--panel);border:0;border-radius:12px;padding:22px;margin:24px 0}.worked-example p{font:400 16px/1.85 var(--body);color:var(--text)}.worked-example .eyebrow{font-size:11px;color:var(--muted)}.chapter-controls button{border:0;border-radius:32px;background:var(--surface);color:var(--text);font-size:14px;padding:12px 20px}.chapter-controls button:last-child{background:var(--cobalt);color:#fff;border:0}.lesson-visual{top:112px;background:var(--panel);border:0;border-radius:12px}.lesson-figure-heading{padding:18px 22px;border:0;color:var(--muted);font-size:13px}.lesson-figure-heading>span{color:var(--muted)}#replay-lesson{border:0;border-radius:24px;background:var(--surface);padding:8px 13px;color:var(--text);font-size:14px}.lesson-stage{background:var(--panel);min-height:240px}.construction-controls{border:0;padding:16px 22px 0}.construction-scrubber button{border:0;border-radius:50%;background:var(--surface);color:var(--text);width:38px;height:38px}#construction-count{font-size:12px;color:var(--muted)}.lesson-figure-caption{padding:14px 22px 0;font-size:15px;color:var(--muted)}.notice-box{background:var(--surface);border:0;border-radius:8px;margin:20px 22px 0;padding:16px}.notice-box>span{font:400 11px var(--body);letter-spacing:.07em;color:var(--text)}.notice-box p{font-size:14px;color:var(--muted)}.lesson-progress{padding:18px 22px}.lesson-progress>span{font-size:12px;color:var(--muted)}.lesson-progress>div{background:var(--surface)}#figure-progress-bar{background:var(--text)}.lesson-visual>a{font-size:14px;color:var(--text);border-color:var(--line);padding:16px 22px}.prediction-panel{padding:32px;background:var(--panel);border:0;border-radius:12px;gap:40px}.prediction-panel .eyebrow{color:var(--muted);font-size:12px}.prediction-panel h2{font-size:28px}.prediction-panel>div>p{font-size:16px;color:var(--muted)}#prediction-choices button{border:1px solid #555563;border-radius:24px;color:var(--text);padding:14px 18px;font-size:15px}#prediction-choices button>span{color:var(--muted);border:0;font-size:12px}#prediction-choices button:hover{background:var(--surface)}#prediction-choices .answer-correct{background:#363644;border-color:var(--text)}#prediction-choices .answer-rethink{background:var(--surface);border-color:#9999a7}#prediction-feedback,#prediction-feedback.rethink{background:var(--surface);color:var(--text)!important;border-radius:12px;font-size:15px}.lesson-takeaway{background:var(--panel);border:0;border-radius:12px;padding:32px}.lesson-takeaway h2{font-size:32px}.lesson-takeaway a{background:var(--surface);color:var(--text);border-radius:32px}.complete-lesson,.lesson-references{border-color:var(--line);padding:28px 0}.complete-lesson summary{font-size:17px;color:var(--text)}.lesson-references,.lesson-references a{font-size:15px;color:var(--muted)}#full-lesson h2{font-size:28px}#full-lesson p{font-size:16px;color:var(--muted);line-height:1.85}
/* Research is a browsable notebook, with its methodology available on demand. */
.research-main{max-width:1200px}.research-intro{padding:40px 0}.research-intro h1{font-size:clamp(36px,4.6vw,60px);line-height:1.1;margin:20px 0 24px;font-weight:450}.research-main p,.research-main li{color:var(--muted);line-height:1.85;font-size:16px}.research-main .lead{font-size:20px;color:var(--muted);max-width:710px}.research-main h2{font-size:30px;font-weight:450;letter-spacing:-.03em}.research-main h3{font-size:20px;color:var(--text);font-weight:450}.research-method{margin:28px 0 40px;background:var(--panel);border-radius:12px;padding:20px 24px}.research-method summary{font-size:16px;color:var(--text);cursor:pointer}.research-principles{border-color:var(--line)}.research-principles b{color:var(--text)}#research-search{border:0;border-radius:32px;background:var(--surface);padding:16px 22px}#research-search::placeholder{color:var(--muted)}.research-index{gap:10px;margin-top:24px}.research-index a{border:0;border-radius:12px;background:var(--panel);padding:16px 20px;font-size:15px}.research-index a:hover{background:var(--surface);text-decoration:none!important}.research-index span{color:var(--muted)}.research-entry{border-color:var(--line);padding:48px 0;scroll-margin-top:112px}.entry-lead{color:var(--text)!important}.research-rule,.research-limit{background:var(--panel);border:0;border-radius:12px;padding:24px;color:var(--text)}.entry-sources a,.research-bibliography a{color:var(--text)}.launch-shape{background:var(--surface);color:var(--text);border:0;border-radius:32px;padding:13px 20px;font-size:15px}.launch-shape:hover{background:#393948}.research-bibliography{border-color:var(--line)}
@media(min-width:1700px){main{max-width:1540px}.site-header{padding-left:max(48px,calc((100vw - 1444px)/2));padding-right:max(48px,calc((100vw - 1444px)/2))}.shape-preview{height:290px}}
@media(max-width:1200px){main{padding:0 32px}.site-header{padding:0 32px}.gallery-hero{gap:32px}.hero-feature{min-height:270px}.home-grid{gap:20px}.shape-preview{height:220px}.shape-content{padding:22px}.shape-content h2{font-size:25px}.lesson-layout{grid-template-columns:165px minmax(0,1fr);gap:24px 32px}.chapter-nav{grid-row:1/4}.chapter-heading{grid-column:2;grid-row:1}.lesson-visual{grid-column:2;grid-row:2;position:static;max-width:760px}.chapter-reading{grid-column:2;grid-row:3;max-width:760px}}
@media(max-width:960px){.home-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.header-caption{display:none}.gallery-hero{gap:24px;grid-template-columns:1fr 1fr}.gallery-hero h1{font-size:42px!important}.gallery-hero p{font-size:16px}.hero-feature{min-height:260px}.hero-feature-caption{inset:auto 20px 20px}.hero-feature-caption strong{font-size:20px}.hero-feature-caption small{font-size:10px}.shape-content h2{min-height:60px}.site-links a{padding:10px 14px}.page-intro{align-items:start}.shape-chooser{flex-basis:210px}.research-principles{gap:18px}}
@media(max-width:700px){:root{--header-height:76px}main,.research-main,.lesson-main{padding:0 20px}.site-header{padding:0 20px;gap:12px}.site-brand{font-size:23px;gap:8px}.brand-mark{width:22px;height:22px}.site-links{gap:1px;font-size:14px}.site-links a{padding:9px 12px}.mode-switch a{min-width:70px;padding:9px 14px;font-size:14px}.gallery-hero{grid-template-columns:1fr;padding:24px 0 32px;gap:24px}.gallery-hero h1{font-size:42px!important;margin:14px 0 16px!important}.gallery-hero p{font-size:16px}.gallery-hero p br{display:none}.gallery-hero .eyebrow{font-size:11px}.hero-feature{min-height:190px}.hero-feature img{object-position:center 42%}.hero-feature-caption{inset:auto 20px 18px}.hero-feature-caption strong{font-size:21px}.feature-go{width:42px;height:42px}.collection-heading{margin-bottom:20px;align-items:center}.collection-heading h2{font-size:24px}.collection-heading>span{max-width:130px;font-size:13px;text-align:right}.gallery-controls{gap:14px}#gallery-search{flex-basis:100%;max-width:none;font-size:16px}.filter-summary{width:100%;margin:0}#result-count{font-size:13px}#topic-tabs{margin:12px 0 20px}#topic-tabs button{font-size:14px;padding:10px 15px}.home-grid{grid-template-columns:1fr;gap:20px}.shape-preview{height:265px}.shape-content{padding:22px 24px 25px}.shape-content h2{font-size:27px;min-height:0}.shape-content p{font-size:16px;min-height:0}.shape-bottom a{font-size:15px}.card-open{opacity:1}.page-intro,.lesson-intro{padding:24px 0 28px}.page-intro h1,.lesson-intro h1{font-size:36px}.page-intro p,#lesson-deck,.lesson-intro #lesson-deck{font-size:16px}.shape-chooser{margin-top:24px;gap:15px}.shape-chooser label{font-size:13px}.shape-chooser select{font-size:14px;padding:12px 16px;min-height:44px}.explore-page .canvas-wrap{height:360px;min-height:360px}.explore-page .plot-heading{padding:12px 16px}.plot-badge{max-width:calc(100% - 162px);font-size:11px}.plot-tools{right:10px;top:12px;padding:3px;gap:2px}.plot-tools button{width:29px;height:32px}.axis-label{font-size:12px}.explore-page .transport{padding:14px;gap:10px}.explore-page .parameters{padding:22px 20px;gap:28px}.statline{font-size:12px}.related-grid{grid-template-columns:1fr}.section-heading{gap:16px}.section-heading h2{font-size:26px}.section-heading>a{font-size:13px}.concept-tools{gap:12px}.concept-tools>span{font-size:13px}.concept-tools button{font-size:14px!important}.lesson-layout{grid-template-columns:minmax(0,1fr);gap:24px;padding:24px 0 32px}.chapter-nav{grid-column:1;grid-row:1}.chapter-heading{grid-column:1;grid-row:2}.lesson-visual{grid-column:1;grid-row:3}.chapter-reading{grid-column:1;grid-row:4}#chapters{gap:8px;padding:3px 0 8px}#chapters button{min-width:155px;max-width:180px;font-size:14px;margin:0;border-radius:12px}.chapter-heading h2{font-size:30px}.chapter-heading>p{font-size:18px}.lesson-stage{min-height:220px}.lesson-figure-heading{padding:16px}.construction-controls{padding:14px 16px 0}.lesson-figure-caption{padding:14px 16px 0;font-size:15px}.notice-box{margin:16px 16px 0}.lesson-progress{padding:16px}.lesson-visual>a{padding:16px;font-size:14px}.chapter-controls{gap:10px}.chapter-controls button{font-size:14px;padding:12px 17px}#chapter-body p{font-size:16px}.prediction-panel{grid-template-columns:1fr;padding:24px;gap:24px}.prediction-panel h2{font-size:26px}.prediction-panel>div>p{font-size:16px}.lesson-takeaway{padding:24px}.lesson-takeaway h2{font-size:28px}.research-intro{padding:28px 0}.research-intro h1{font-size:40px}.research-main .lead{font-size:19px}.research-method{padding:20px}.research-index,.research-principles{grid-template-columns:1fr}.research-index a{font-size:15px}.research-main h2{font-size:28px}.research-rule{font-size:14px;padding:20px}.site-footer{margin-top:48px;gap:24px}.site-footer small{font-size:12px}.site-footer>a{font-size:13px}.footer-wordmark{font-size:20px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition:none!important;animation:none!important;scroll-behavior:auto!important}}

/* Keep the first set of shapes close to the opening, including on smaller screens. */
@media(min-width:701px){.gallery-hero{padding:20px 0 32px}.gallery-hero h1{font-size:clamp(36px,3.5vw,50px)!important}.hero-feature{min-height:232px}}
@media(max-width:700px){.gallery-hero{padding:16px 0 28px;gap:20px}.gallery-hero h1{font-size:36px!important}.hero-feature{min-height:136px}.collection-heading>span{display:none}.gallery-controls{position:relative}.filter-summary{position:absolute;right:0;bottom:calc(100% + 20px);width:auto;gap:10px}.collection-heading{padding-right:170px}.collection-heading h2{font-size:23px}#clear-filters{font-size:13px}}
input[type=range]{-webkit-appearance:none;appearance:none;height:20px;background:transparent;cursor:pointer}input[type=range]::-webkit-slider-runnable-track{height:3px;border-radius:3px;background:#51515f}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:14px;height:14px;border-radius:50%;background:var(--text);margin-top:-5.5px;border:0}input[type=range]::-moz-range-track{height:3px;border-radius:3px;background:#51515f}input[type=range]::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:var(--text);border:0}
.shape-preview img{display:block;width:100%;height:100%;object-fit:contain}
@media(max-width:700px){.site-header:has(.mode-switch a:nth-child(3)){height:auto;min-height:118px;display:grid;grid-template-columns:1fr;padding-top:14px;padding-bottom:12px;gap:12px}.site-header:has(.mode-switch a:nth-child(3)) .site-brand{justify-self:start}.site-header:has(.mode-switch a:nth-child(3)) .mode-switch{justify-self:stretch;display:grid;grid-template-columns:repeat(3,1fr)}.site-header:has(.mode-switch a:nth-child(3)) .mode-switch a{min-width:0;padding:8px 10px}.site-header:has(.mode-switch a:nth-child(3)) .site-links{display:none}html:has(.mode-switch a:nth-child(3)){scroll-padding-top:140px}}

.shape-bottom a{white-space:nowrap}.shape-bottom a:nth-child(2){background:transparent;box-shadow:inset 0 0 0 1px #626270}.shape-bottom a:last-child{background:transparent;box-shadow:none}.shape-bottom a,.shape-bottom a:first-child,.shape-bottom a:last-child{padding:12px 14px}