@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Manrope:wght@400;500;600;700;800&display=swap');
:root{color-scheme:dark;--bg:#080808;--panel:#101010;--panel2:#151515;--line:#262626;--text:#f4f4f4;--muted:#888;--soft:#bdbdbd;--white:#fff;--radius:18px;--ease:cubic-bezier(.2,.8,.2,1)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Manrope,system-ui,sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button,a,.card,.nav-link{ -webkit-tap-highlight-color:transparent}::selection{background:#eee;color:#111}
.shell{min-height:100vh}.topbar{height:70px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 clamp(18px,5vw,72px);position:sticky;top:0;z-index:30;background:#080808eF;backdrop-filter:blur(18px)}.brand{font-weight:800;letter-spacing:.12em;font-size:14px}.brand span{color:#777}.toplinks{display:flex;gap:26px;color:#aaa;font-size:12px}.toplinks a:hover,.toplinks a.active{color:#fff}.layout{display:grid;grid-template-columns:230px minmax(0,1fr);max-width:1600px;margin:auto}.sidebar{border-right:1px solid var(--line);min-height:calc(100vh - 70px);padding:28px 18px;position:sticky;top:70px;height:calc(100vh - 70px)}.side-label{font:10px 'DM Mono';color:#666;letter-spacing:.16em;margin:20px 12px 10px}.nav-list{display:grid;gap:5px}.nav-link{padding:10px 12px;border-radius:10px;color:#999;font-size:12px;display:flex;gap:11px;align-items:center;transition:.25s var(--ease)}.nav-link:hover,.nav-link.active{background:#1a1a1a;color:#fff;transform:translateX(3px)}.nav-icon{width:18px;text-align:center;color:#777}.main{min-width:0;padding:42px clamp(18px,4vw,60px) 100px}.eyebrow{font:10px 'DM Mono';letter-spacing:.2em;text-transform:uppercase;color:#777}.hero{min-height:530px;position:relative;overflow:hidden;border:1px solid var(--line);border-radius:24px;background:#111;display:flex;align-items:flex-end;padding:clamp(25px,5vw,60px);isolation:isolate}.hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;opacity:.4;filter:grayscale(1)}.hero:after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,#050505ed 0%,#0505059c 60%,#05050530),linear-gradient(0deg,#050505 0%,transparent 70%)}.hero-content{max-width:760px}.hero h1{font-size:clamp(44px,8vw,92px);line-height:.98;letter-spacing:-.075em;margin:18px 0}.hero p{max-width:570px;color:#aaa;font-size:14px}.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:25px}.button{border:1px solid #444;background:#f4f4f4;color:#080808;padding:11px 17px;border-radius:9px;font-size:11px;font-weight:800;cursor:pointer;transition:.25s var(--ease);display:inline-flex;align-items:center;justify-content:center;gap:8px}.button:hover{transform:translateY(-3px);box-shadow:0 12px 30px #fff2}.button.secondary{background:#111;color:#eee;border-color:#383838}.button.ghost{background:transparent;color:#ddd;border-color:#333}.section{margin-top:58px}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:18px}.section h2{font-size:23px;letter-spacing:-.05em;margin:5px 0}.muted{color:var(--muted)}.small{font-size:12px}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.card{border:1px solid var(--line);background:linear-gradient(145deg,#141414,#0d0d0d);border-radius:15px;padding:20px;min-width:0;transition:transform .35s var(--ease),border-color .35s,background .35s;animation:rise .65s both}.card:hover{transform:translateY(-5px);border-color:#555;background:#171717}.card-icon{width:38px;height:38px;border:1px solid #333;border-radius:11px;display:grid;place-items:center;font:14px 'DM Mono';color:#eee}.card h3{font-size:14px;margin:18px 0 5px}.card p{font-size:11px;color:#888;margin:0;min-height:38px}.card-foot{display:flex;justify-content:space-between;align-items:center;margin-top:20px;padding-top:13px;border-top:1px solid #242424;color:#888;font:10px 'DM Mono'}.arrow{color:#fff}.pill{border:1px solid #333;border-radius:99px;padding:4px 8px;color:#999;font:9px 'DM Mono';text-transform:uppercase}.page-title{font-size:clamp(32px,5vw,52px);letter-spacing:-.07em;line-height:1.05;margin:10px 0}.page-intro{max-width:650px;color:#888;font-size:13px}.toolbar{display:flex;gap:10px;flex-wrap:wrap;margin:24px 0}.field,.select,.textarea{width:100%;background:#0b0b0b;color:#eee;border:1px solid #303030;border-radius:10px;padding:12px 13px;outline:none;font-size:12px;transition:border .2s}.field:focus,.select:focus,.textarea:focus{border-color:#888}.search{max-width:360px}.workspace{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,.8fr);gap:14px;margin-top:25px}.panel{background:#101010;border:1px solid var(--line);border-radius:15px;padding:20px;min-width:0}.panel h3{font-size:13px;margin:0 0 15px}.label{font:10px 'DM Mono';color:#888;display:block;margin:15px 0 7px}.textarea{min-height:170px;resize:vertical;font:12px/1.7 'DM Mono'}.actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.output{min-height:180px;max-height:520px;overflow:auto;background:#080808;border:1px solid #292929;border-radius:10px;padding:14px;font:11px/1.7 'DM Mono';white-space:pre-wrap;overflow-wrap:anywhere;color:#c9c9c9}.statline{display:flex;gap:20px;flex-wrap:wrap;color:#777;font:10px 'DM Mono';margin-top:12px}.codebox{position:relative}.codebox pre{margin:0;background:#080808;border:1px solid #292929;border-radius:10px;padding:18px;overflow:auto;max-height:360px;color:#c9c9c9;font:11px/1.7 'DM Mono'}.copy-top{position:absolute;right:10px;top:10px}.skill{margin:18px 0}.skill-top{display:flex;justify-content:space-between;font-size:11px;margin-bottom:7px}.track{height:4px;background:#292929;border-radius:5px;overflow:hidden}.track span{display:block;height:100%;background:#eee;transform-origin:left;animation:fill 1.2s var(--ease) both}.footer{border-top:1px solid var(--line);margin-top:70px;padding:25px 0;color:#666;font:10px 'DM Mono';display:flex;justify-content:space-between;gap:10px}.bottom-nav{display:none}.toast{position:fixed;bottom:25px;right:25px;background:#eee;color:#080808;padding:12px 17px;border-radius:10px;font-size:11px;font-weight:700;z-index:90;box-shadow:0 12px 40px #0009;animation:rise .25s both}.empty{border:1px dashed #333;border-radius:14px;padding:35px;text-align:center;color:#777;font-size:12px}.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s,transform .7s}.reveal.visible{opacity:1;transform:none}.mobile-menu{display:none}
@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}@keyframes fill{from{transform:scaleX(0)}to{transform:scaleX(1)}}@keyframes pulse{50%{opacity:.45}}
@media(max-width:900px){.layout{grid-template-columns:1fr}.sidebar{display:none}.main{padding-top:25px}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.workspace{grid-template-columns:1fr}.toplinks{display:none}.mobile-menu{display:block;background:none;color:#fff;border:0;font-size:20px}.bottom-nav{position:fixed;display:grid;grid-template-columns:repeat(3,1fr);bottom:0;left:0;right:0;z-index:50;padding:9px 12px calc(9px + env(safe-area-inset-bottom));background:#090909ed;border-top:1px solid #292929;backdrop-filter:blur(18px)}.bottom-nav a{text-align:center;color:#777;font-size:10px;padding:5px}.bottom-nav a.active{color:#fff}.bottom-nav span{display:block;font-size:17px;margin-bottom:1px}.hero{min-height:480px}.footer{margin-bottom:55px}}@media(max-width:520px){.grid{grid-template-columns:1fr 1fr;gap:8px}.card{padding:14px}.card h3{font-size:12px}.card p{font-size:10px}.card-foot{font-size:9px}.hero{min-height:470px;padding:23px}.hero h1{font-size:54px}.main{padding-left:15px;padding-right:15px}.section{margin-top:42px}.page-title{font-size:39px}.panel{padding:14px}.grid.one{grid-template-columns:1fr}}

/* ARCVN UI refinement */
:root{--tap:48px;--accent:#f5f5f5}
.brand{font-size:16px;letter-spacing:.16em}.brand-mark{display:inline-grid;place-items:center;width:30px;height:30px;margin-right:9px;border:1px solid #555;border-radius:9px;font:700 12px 'DM Mono';letter-spacing:0}
.topbar{height:76px}.layout{grid-template-columns:252px minmax(0,1fr)}.sidebar{padding:26px 16px;top:76px;height:calc(100vh - 76px);min-height:calc(100vh - 76px)}
.nav-link{min-height:46px;padding:11px 13px;font-size:13px;border:1px solid transparent}.nav-link.active{border-color:#303030;background:linear-gradient(100deg,#202020,#111);box-shadow:inset 2px 0 #eee}.nav-icon{font-size:17px;width:22px}
.main{padding-top:38px}.card{padding:22px}.card-icon{width:48px;height:48px;font-size:18px}.button{min-height:46px;padding:12px 18px;font-size:12px}.field,.select{min-height:48px}.textarea{font-size:13px}
.hero{min-height:490px;background:radial-gradient(ellipse at 78% 20%,#242424 0%,transparent 44%),linear-gradient(135deg,#171717,#080808 65%)}.hero:before{content:"";position:absolute;inset:0;background:linear-gradient(110deg,transparent 20%,#ffffff08 50%,transparent 80%);transform:translateX(-100%);animation:heroSweep 8s ease-in-out infinite}.hero-video{display:none}
.hero h1{font-weight:800;letter-spacing:-.085em}.hero-content{max-width:790px}
.section h2{font-size:clamp(23px,3vw,31px)}.grid{gap:15px}
.mobile-drawer{display:none;position:fixed;inset:76px 0 0;z-index:60;background:#050505eF;backdrop-filter:blur(14px);padding:18px;overflow:auto}.mobile-drawer.open{display:block;animation:drawerIn .25s ease both}.mobile-drawer .nav-link{font-size:15px;min-height:52px}
.bottom-nav{padding:8px 12px calc(8px + env(safe-area-inset-bottom));min-height:72px;grid-template-columns:repeat(3,minmax(0,1fr));background:#090909f2}.bottom-nav a{position:relative;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:3px;min-height:54px;border-radius:13px;font-size:11px;font-weight:700;transition:color .25s,background .25s,transform .25s}.bottom-nav a span{font-size:21px;line-height:1.1}.bottom-nav a.active{color:#fff;background:#1c1c1c}.bottom-nav a.active:after{content:"";position:absolute;bottom:2px;width:18px;height:2px;border-radius:5px;background:#eee;animation:navMark .25s ease both}
.skeleton{position:relative;overflow:hidden;background:#151515;border:1px solid #252525;border-radius:15px;min-height:170px}.skeleton:after,.shimmer:after{content:"";position:absolute;inset:0;transform:translateX(-100%);background:linear-gradient(100deg,transparent 20%,#ffffff12 45%,#ffffff05 55%,transparent 80%);animation:shimmer 1.35s infinite}.skeleton-line{height:9px;background:#252525;border-radius:8px;margin:12px 0;width:75%}.skeleton-line.short{width:40%}.skeleton-icon{width:44px;height:44px;border-radius:12px;background:#252525}
.page-transition{animation:pageIn .38s cubic-bezier(.2,.8,.2,1) both}.page-leave{opacity:0;transform:translateY(7px);transition:opacity .16s,transform .16s}
.empty-state{border:1px dashed #383838;border-radius:16px;padding:34px 20px;text-align:center;background:linear-gradient(140deg,#111,#0b0b0b)}.empty-state .empty-symbol{font:24px 'DM Mono';color:#aaa;margin-bottom:10px}.empty-state h3{margin:0 0 6px;font-size:15px}.empty-state p{max-width:440px;margin:0 auto;color:#777;font-size:12px}
@keyframes shimmer{100%{transform:translateX(100%)}}@keyframes pageIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}@keyframes drawerIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}@keyframes navMark{from{width:0}to{width:18px}}@keyframes heroSweep{0%,65%{transform:translateX(-100%)}90%,100%{transform:translateX(100%)}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;transition-duration:.01ms!important}}
@media(max-width:900px){.layout{grid-template-columns:1fr}.sidebar{display:none}.topbar{height:68px;padding:0 17px}.mobile-drawer{inset:68px 0 0}.main{padding:24px 18px 112px}.bottom-nav{display:grid}.hero{min-height:450px}.card{padding:18px}.card-icon{width:50px;height:50px}.button{min-height:50px;font-size:13px}.field,.select{min-height:50px}}
@media(max-width:520px){.grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.card{padding:15px;min-height:190px}.card h3{font-size:13px}.card p{font-size:11px;min-height:50px}.card-icon{width:52px;height:52px;font-size:20px}.hero{min-height:470px;padding:22px}.hero h1{font-size:clamp(48px,14vw,66px)}.hero p{font-size:13px}.hero-actions .button{flex:1}.section-head{align-items:start;flex-direction:column}.toolbar{display:grid}.search{max-width:none}.actions .button{flex:1}.page-title{font-size:42px}}