@font-face{font-family:NeoSans;src:url('/fonts/NeoSansPro-Regular.ttf') format('truetype');font-style:normal;font-weight:400;font-display:swap}
@font-face{font-family:NeoSans;src:url('/fonts/NeoSansPro-Medium.ttf') format('truetype');font-style:normal;font-weight:500 700;font-display:swap}
:root{font-family:NeoSans,Arial,sans-serif;color-scheme:dark;--page:#10151b;--surface:#18212a;--text:#f4f8fa;--muted:#a9bac4;--line:#334552;--link:#76c9f1;--input:#1a2730;--shadow:0 22px 70px rgb(0 0 0/.42)}
:root[data-theme=light]{color-scheme:light;--page:#f5f7f9;--surface:#fff;--text:#17232d;--muted:#5a6d7a;--line:#d6e1e7;--link:#087daf;--input:#fff;--shadow:0 22px 70px rgb(25 58 76/.18)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--page);color:var(--text);min-width:280px}
button,input{font:inherit}
button,a{-webkit-tap-highlight-color:transparent}
button{cursor:pointer}
a{color:inherit;text-decoration:none}
button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #40bdf4;outline-offset:3px}
[hidden]{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.site-header{position:sticky;top:0;z-index:30;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--surface) 94%,transparent);backdrop-filter:blur(20px) saturate(130%)}
.header-inner{min-height:64px;padding:0 28px;display:flex;align-items:center;gap:22px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:20px;font-weight:500;white-space:nowrap}
.brand img{display:block;object-fit:contain}
.desktop-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.desktop-nav a{position:relative;display:flex;align-items:center;gap:8px;padding:10px 14px;border-radius:9px;color:var(--muted);font-size:14px;white-space:nowrap}
.desktop-nav a:hover,.desktop-nav a[aria-current=page]{background:color-mix(in srgb,var(--text) 8%,transparent);color:var(--text)}
.desktop-nav a[aria-current=page]:after{content:'';position:absolute;bottom:4px;left:14px;right:14px;height:2px;background:var(--muted);border-radius:2px}
.desktop-nav svg,.theme-toggle svg,.menu-toggle svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none}
.theme-toggle,.menu-toggle{display:grid;place-items:center;flex:0 0 40px;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--text)}
.theme-toggle:hover,.menu-toggle:hover{border-color:var(--link)}
.theme-moon,:root[data-theme=light] .theme-sun{display:none}:root[data-theme=light] .theme-moon{display:block}
.menu-toggle,.mobile-navigation,.menu-backdrop{display:none}
main{max-width:1440px;margin:0 auto;padding:0 34px}
.intro{display:grid;grid-template-columns:minmax(0,1fr) minmax(210px,320px);gap:60px;align-items:end;padding:72px 0 54px}
.eyebrow{margin:0 0 19px;color:var(--link);font-size:11px;letter-spacing:.12em}
h1{font-size:clamp(43px,5.6vw,76px);font-weight:500;letter-spacing:-.045em;line-height:1.02;margin:0}
h1 span{color:var(--link)}
.lead{max-width:650px;color:var(--muted);font-size:clamp(16px,1.5vw,19px);line-height:1.55;margin:24px 0 0}
.intro-side{padding:0 0 4px 22px;border-left:1px solid var(--line)}
.totals{display:flex;gap:20px;flex-wrap:wrap;font-size:17px;font-weight:500;color:var(--text)}
.intro-side p{font-size:13px;line-height:1.6;color:var(--muted);margin:16px 0 0}
.explore{display:grid;grid-template-columns:minmax(220px,460px) auto;align-items:center;gap:13px 24px;margin:0 0 20px}
.search-box{display:flex;align-items:center;gap:12px;min-height:52px;border:1px solid var(--line);border-radius:12px;background:var(--input);padding:0 16px}
.search-box:focus-within{border-color:var(--link)}
.search-label{flex:none;color:var(--muted);font-size:12px}
.search-box input{width:100%;min-width:0;background:transparent;border:0;outline:0;color:var(--text);font-size:15px}
.search-box input::placeholder{color:var(--muted);opacity:1}
.search-box input:focus-visible{outline:0}
.result-status{margin:0;color:var(--muted);font-size:13px;text-align:right}
.depth-nav{grid-column:1/-1;display:flex;gap:8px;overflow-x:auto;padding:3px 1px 5px;scrollbar-width:thin}
.depth-nav a{flex:none;padding:8px 12px;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:12px;line-height:1.2;white-space:nowrap}
.depth-nav a:hover{border-color:var(--link);color:var(--text)}
.iceberg-board{isolation:isolate;position:relative;overflow:hidden;border-radius:22px;background:linear-gradient(to bottom,#789eaf 0,#a4c0ca var(--waterline,20%),#226d80 var(--waterline,20%),#17465d 45%,#0c2a41 74%,#061321 100%);box-shadow:0 14px 40px rgb(6 33 48/.12)}
.iceberg-board:after{content:'';position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(2,17,28,.33),transparent 34%,transparent 68%,rgba(2,17,28,.28));pointer-events:none}
.iceberg-art{position:absolute;left:0;width:100%;z-index:-2;object-fit:fill;pointer-events:none}
.iceberg-above{top:0;height:var(--waterline,20%)}
.iceberg-below{top:var(--waterline,20%);height:calc(100% - var(--waterline,20%));opacity:.96}
.waterline{position:absolute;top:var(--waterline,20%);left:0;right:0;height:2px;z-index:0;background:linear-gradient(90deg,transparent,rgba(221,250,255,.78) 15%,rgba(221,250,255,.7) 80%,transparent);box-shadow:0 4px 18px rgba(176,235,248,.32);pointer-events:none}
.waterline span{position:absolute;right:22px;top:9px;color:rgba(233,251,255,.72);font:9px/1 NeoSans,Arial,sans-serif;letter-spacing:.12em}
.levels{position:relative;z-index:1}
.tier{min-height:205px;padding:27px 34px;display:grid;grid-template-columns:minmax(150px,200px) minmax(0,1fr);gap:26px;align-items:start;scroll-margin-top:20px}
.tier+.tier{border-top:1px solid rgba(219,249,255,.18)}
.tier-label{padding-top:5px;color:white;text-shadow:0 1px 6px rgba(1,21,35,.55)}
.tier-index{font-size:11px;letter-spacing:.14em;opacity:.72}
.tier-label h2{margin:11px 0 8px;font-size:20px;font-weight:500;line-height:1.2}
.tier-label p{margin:0;max-width:195px;font-size:12px;line-height:1.5;color:rgba(245,252,255,.86)}
.theory-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px 16px}
.theory-chip{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;width:100%;min-height:66px;padding:9px 6px;border:1px solid transparent;border-radius:8px;text-align:center;background:transparent;color:#fff;text-shadow:0 2px 3px #08293b,0 0 10px #08293b,0 0 18px #08293b;transition:background-color .15s,border-color .15s}
.theory-chip:hover{background:rgba(4,26,40,.55);border-color:rgba(215,248,255,.5)}
.theory-name{font-size:15px;font-weight:500;line-height:1.27;overflow-wrap:anywhere}
.theory-videos{font-size:11px;color:#e0f5fa;line-height:1.25}
.empty-state,.load-error{border:1px solid var(--line);background:var(--surface);border-radius:14px;padding:24px;color:var(--muted);font-size:15px;line-height:1.5}
.method-note{display:grid;grid-template-columns:2fr 1fr;gap:30px;padding:32px 0 42px;color:var(--muted);font-size:13px;line-height:1.65}
.method-note p{margin:0}.method-note strong{color:var(--text);font-weight:500}
.site-footer{position:relative;isolation:isolate;overflow:hidden;min-height:180px;border-top:1px solid var(--line);background:var(--surface);color:var(--muted)}
.site-footer:before{content:'SCITOPUS';position:absolute;right:-.03em;bottom:-.25em;color:rgba(84,197,255,.07);font-size:18rem;font-weight:700;line-height:.78;white-space:nowrap;pointer-events:none}
.footer-inner{position:relative;z-index:1;max-width:1440px;min-height:180px;margin:0 auto;padding:24px 34px;display:flex;justify-content:space-between;gap:24px;align-items:center}
.footer-information p{margin:0 0 10px;font-size:13px}.footer-legal{display:flex;flex-direction:column;align-items:flex-start;gap:6px;font-size:12px}
.footer-legal a{padding:2px 0}.footer-legal a:hover{color:var(--text)}
.footer-social{display:flex;align-items:center;gap:10px}.footer-social a{display:grid;place-items:center;width:34px;height:34px;border-radius:7px}.footer-social a:hover{background:var(--line)}.footer-social img{display:block;width:24px;height:24px;object-fit:contain}
dialog{width:min(880px,calc(100% - 28px));max-height:min(88dvh,960px);padding:0;border:1px solid var(--line);border-radius:20px;background:var(--surface);color:var(--text);box-shadow:var(--shadow)}
#topic-dialog[data-many=true]{width:min(1200px,calc(100% - 28px))}
dialog::backdrop{background:rgba(2,11,18,.76)}
.dialog-inner{padding:28px 32px 34px}
.dialog-top{display:flex;align-items:center;justify-content:space-between;gap:18px}
.dialog-kicker{color:var(--link);font-size:11px;letter-spacing:.09em;text-transform:uppercase}
.close-button{display:grid;place-items:center;width:42px;height:42px;flex:none;border:1px solid var(--line);border-radius:11px;background:transparent;color:var(--text);font-size:26px;line-height:1}
.close-button:hover{border-color:var(--link)}
dialog h2{font-size:clamp(26px,3.2vw,38px);font-weight:500;letter-spacing:-.03em;line-height:1.15;margin:16px 0 25px;overflow-wrap:anywhere}
.claim-label{margin:0 0 8px;color:var(--muted);font-size:12px}
.dialog-description{font-size:16px;line-height:1.58;margin:0;max-width:720px}
.video-heading{margin:33px 0 15px;display:flex;align-items:baseline;justify-content:space-between;gap:12px}
.video-heading h3{font-size:19px;margin:0;font-weight:500}.video-heading span{color:var(--muted);font-size:13px;white-space:nowrap}
.video-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
#topic-dialog[data-many=true] .video-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
#topic-dialog[data-single=true] .video-grid{grid-template-columns:minmax(0,380px);justify-content:center}
.video-link{min-width:0;display:block;border:1px solid var(--line);border-radius:13px;overflow:hidden;background:var(--page)}
.video-link:hover{border-color:var(--link)}
.video-preview{display:grid;place-items:center;position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;background:#112330;color:#aac1cf;font-size:13px}
.video-preview img{position:absolute;inset:0;display:block;width:100%;height:100%;object-fit:cover}
.video-copy{display:block;padding:13px 14px 15px}
.video-title-box{height:2.76em;display:flex;align-items:center;font-size:14px;line-height:1.38}
.video-title{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden;color:var(--text);line-height:1.38;overflow-wrap:anywhere}
.video-author{display:flex;align-items:center;gap:9px;margin-top:10px;color:var(--muted);font-size:12px;line-height:1.35}
.video-avatar{position:relative;display:grid;place-items:center;flex:0 0 32px;width:32px;height:32px;border-radius:50%;overflow:hidden;background:var(--line);color:var(--text);font-size:13px}
.video-avatar img{position:absolute;inset:0;width:100%;height:100%;border-radius:50%;object-fit:cover}
.legal-description{color:var(--muted);font-size:13px;line-height:1.5}.legal-body{font-size:14px;line-height:1.65}.legal-body p{margin:14px 0 0}
@media(max-width:1000px){#topic-dialog[data-many=true] .video-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.site-footer:before{font-size:12rem}}
@media(max-width:1023px){.header-inner{padding:0 12px;gap:8px}.brand{margin-right:auto}.desktop-nav{display:none}.menu-toggle{display:grid}.menu-backdrop{display:block;position:fixed;inset:64px 0 0;width:100%;height:calc(100dvh - 64px);border:0;background:transparent;z-index:1}.mobile-navigation{position:absolute;top:64px;left:0;right:0;z-index:2;display:flex;flex-direction:column;gap:4px;max-height:calc(100dvh - 64px);overflow-y:auto;padding:8px 12px 12px;border-bottom:1px solid var(--line);background:var(--surface);box-shadow:0 8px 24px #0003}.mobile-navigation a{display:flex;align-items:center;min-height:44px;padding:8px 12px;border-radius:9px;color:var(--muted);font-size:15px}.mobile-navigation a:hover,.mobile-navigation a[aria-current=page]{background:color-mix(in srgb,var(--text) 8%,transparent);color:var(--text)}}
@media(max-width:800px){.intro{grid-template-columns:1fr;gap:28px;padding:52px 0 36px}.intro-side{max-width:680px}.tier{grid-template-columns:150px minmax(0,1fr);gap:14px;padding:25px 22px}.theory-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.method-note{grid-template-columns:1fr;gap:12px}}
@media(max-width:560px){.brand{font-size:18px}.brand img{width:32px;height:32px}main{padding:0 14px}.intro{padding:42px 2px 32px}.intro-side{padding-left:15px}.explore{grid-template-columns:1fr;gap:10px}.result-status{text-align:left;padding-left:3px}.depth-nav{grid-column:auto}.iceberg-board{border-radius:16px}.tier{grid-template-columns:1fr;gap:16px;min-height:0;padding:24px 15px 28px}.tier-label h2{font-size:18px;margin:6px 0 4px}.tier-label p{max-width:none}.theory-grid{gap:6px}.theory-chip{min-height:68px;padding:9px 4px}.theory-name{font-size:14px}.iceberg-art{width:150%;left:-25%}.waterline span{right:14px}.dialog-inner{padding:20px 18px 24px}.video-grid,#topic-dialog[data-many=true] .video-grid{grid-template-columns:1fr}.site-footer,.footer-inner{min-height:140px}.site-footer:before{font-size:5rem}.footer-inner{padding:22px 16px;align-items:center}}
@media(max-width:340px){.theory-grid{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.theory-chip{transition:none}}