@font-face{font-family:'InterV';font-weight:100 900;font-display:swap;src:url(/fonts/inter-vietnamese-wght-normal.woff2) format('woff2');unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}
@font-face{font-family:'InterV';font-weight:100 900;font-display:swap;src:url(/fonts/inter-latin-wght-normal.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@property --a{syntax:'<angle>';inherits:false;initial-value:0deg}
:root{color-scheme:light dark;--bg:#f6f7fd;--fg:#1b2036;--mut:#5b6482;--card:rgba(255,255,255,.74);--line:#e2e6f4;--pri:#4f5bd5;--pri2:#7c4dff;--cy:#19c6e6;--pk:#f472b6;--soft:#eef0ff;--on:#fff;--shadow:0 30px 60px -38px rgba(79,91,213,.5);--orb:.3}
@media(prefers-color-scheme:dark){:root{--bg:#080b16;--fg:#eef1fb;--mut:#a4acc0;--card:rgba(255,255,255,.06);--line:rgba(255,255,255,.12);--pri:#8f9bff;--pri2:#9a7bff;--cy:#38d6f0;--pk:#f472b6;--soft:rgba(143,155,255,.14);--on:#0b0f1c;--shadow:0 30px 60px -34px rgba(0,0,0,.9);--orb:.44}}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:96px}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 InterV,Inter,system-ui,-apple-system,'Segoe UI',sans-serif;overflow-x:hidden;-webkit-font-smoothing:antialiased}
body::before{content:'';position:fixed;inset:0;z-index:-2;background:radial-gradient(circle at 10% 4%,color-mix(in srgb,var(--pri) calc(var(--orb)*100%),transparent),transparent 42%),radial-gradient(circle at 94% 12%,color-mix(in srgb,var(--cy) calc(var(--orb)*80%),transparent),transparent 40%),radial-gradient(circle at 62% 98%,color-mix(in srgb,var(--pk) calc(var(--orb)*70%),transparent),transparent 44%)}
body::after{content:'';position:fixed;inset:0;z-index:-1;pointer-events:none;background-image:radial-gradient(color-mix(in srgb,var(--fg) 20%,transparent) 1px,transparent 1px);background-size:24px 24px;mask-image:radial-gradient(ellipse 80% 60% at 50% 20%,#000 10%,transparent 75%);-webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 20%,#000 10%,transparent 75%);opacity:.35}
a{color:var(--pri)}
main,.site-header,footer{width:100%}
.site-header{position:sticky;top:12px;z-index:50;width:auto;margin:12px clamp(12px,3vw,48px) 0;min-height:70px;padding:10px 14px 10px 18px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;border:1px solid var(--line);border-radius:24px;background:var(--card);backdrop-filter:blur(18px) saturate(1.4);-webkit-backdrop-filter:blur(18px) saturate(1.4);box-shadow:var(--shadow)}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--fg)}.brand img{border-radius:13px}.brand strong{display:block;font-size:22px;letter-spacing:-.03em;line-height:1.1}.brand-dot{color:var(--pri)}.brand small{display:block;font-size:12px;color:var(--mut)}
.site-header nav{display:flex;gap:4px;font-size:14px;font-weight:550}.site-header nav a{text-decoration:none;color:var(--mut);padding:9px 14px;border-radius:12px;transition:.2s}.site-header nav a:hover{background:var(--soft);color:var(--fg)}
.header-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.header-study{font-weight:650;font-size:14px;text-decoration:none;padding:10px 18px;border-radius:14px;color:var(--on);background:linear-gradient(120deg,var(--pri),var(--pri2));box-shadow:0 12px 26px -12px var(--pri)}.header-study:hover{filter:brightness(1.08)}
.header-badminton{font-size:13px;font-weight:650;text-decoration:none;padding:9px 14px;border-radius:14px;color:var(--fg);border:1px solid var(--line);background:var(--card)}.header-badminton:hover{background:var(--soft)}
main{padding:0 clamp(16px,4vw,72px)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:11.5px;letter-spacing:.14em;font-weight:700;text-transform:uppercase;color:var(--pri);margin-bottom:14px}.eyebrow>span{width:8px;height:8px;border-radius:50%;background:var(--cy);box-shadow:0 0 0 4px color-mix(in srgb,var(--cy) 25%,transparent);animation:pulse 2.4s ease-in-out infinite}
@keyframes pulse{50%{box-shadow:0 0 0 9px transparent}}
h1,h2,h3{letter-spacing:-.035em;line-height:1.06;margin:0}
.hero{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:clamp(28px,5vw,96px);align-items:center;padding:clamp(48px,8vw,120px) 0 clamp(40px,6vw,90px)}
.hero h1{font-size:clamp(40px,5.6vw,96px);font-weight:830}
.hero h1 em,.about h2 em{font-style:normal;background:linear-gradient(100deg,var(--pri),var(--cy),var(--pk),var(--pri));background-size:220% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:pan 9s linear infinite}
@keyframes pan{to{background-position:220% 0}}
.hero-copy>p{font-size:clamp(17px,1.5vw,25px);color:var(--mut);max-width:30em;margin:26px 0 0}.hero-copy>p strong{color:var(--fg)}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:34px}
.button{display:inline-flex;align-items:center;gap:10px;padding:15px 26px;border-radius:18px;font-weight:700;text-decoration:none;transition:.2s}.button.primary{color:var(--on);background:linear-gradient(120deg,var(--pri),var(--pri2));box-shadow:0 20px 40px -18px var(--pri)}.button.primary:hover{transform:translateY(-3px);filter:brightness(1.08)}
.text-link{font-weight:650;text-decoration:none}.text-link:hover{text-decoration:underline}
.hero-note{margin-top:30px;color:var(--mut);font-size:14.5px}.hero-note span{color:var(--pri);margin-right:6px}
.hero-art{position:relative;aspect-ratio:1.05;max-height:620px;display:grid;place-items:center}
.art-grid{position:absolute;inset:6%;border-radius:40px;border:1px solid var(--line);background:linear-gradient(160deg,color-mix(in srgb,var(--pri) 18%,transparent),color-mix(in srgb,var(--cy) 12%,transparent));background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:42px 42px}
.art-orbit{position:absolute;width:86%;aspect-ratio:1;border-radius:50%;border:1.5px dashed color-mix(in srgb,var(--pri) 55%,transparent);animation:orbit 38s linear infinite}.art-orbit::after{content:'';position:absolute;top:8%;left:12%;width:16px;height:16px;border-radius:50%;background:var(--pk);box-shadow:0 0 24px var(--pk)}
@keyframes orbit{to{transform:rotate(360deg)}}
.art-spark{position:absolute;right:9%;top:6%;font-size:42px;color:var(--cy);animation:float 6s ease-in-out infinite}
.art-window{position:relative;width:78%;border-radius:28px;border:1px solid var(--line);background:var(--card);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);box-shadow:var(--shadow);overflow:hidden;transform:rotate(-3deg);animation:float 8s ease-in-out infinite;--r:-3deg}
@keyframes float{50%{transform:translateY(-14px) rotate(var(--r,0deg))}}
.window-top{display:flex;align-items:center;gap:7px;padding:14px 18px;border-bottom:1px solid var(--line)}.window-top i{width:11px;height:11px;border-radius:50%;background:var(--pk)}.window-top i:nth-child(2){background:#fbbf24}.window-top i:nth-child(3){background:#34d399}.window-top span{margin-left:12px;font-size:12.5px;color:var(--mut);font-family:ui-monospace,SFMono-Regular,monospace}
.window-body{padding:clamp(18px,2.4vw,34px);display:grid;gap:14px}.mini-label{font-size:11px;letter-spacing:.14em;font-weight:700;color:var(--pri)}.art-title{font-size:clamp(22px,2.6vw,38px);font-weight:760;letter-spacing:-.03em;line-height:1.15}
.art-modules{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.art-modules span{display:grid;gap:2px;padding:14px;border-radius:16px;background:var(--soft);border:1px solid var(--line);font-size:13px;font-weight:600}.art-modules b{font-size:22px;color:var(--pri)}
.art-progress{height:10px;border-radius:6px;background:var(--line);overflow:hidden}.art-progress span{display:block;height:100%;width:68%;border-radius:6px;background:linear-gradient(90deg,var(--pri),var(--cy));animation:grow 5s ease-in-out infinite alternate}@keyframes grow{from{width:34%}to{width:86%}}
.window-body small{color:var(--mut)}
.art-float{position:absolute;display:flex;align-items:center;gap:10px;padding:12px 18px;border-radius:18px;font-size:14px;font-weight:650;border:1px solid var(--line);background:var(--card);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow);animation:float 7s ease-in-out infinite}.art-float span{color:var(--pri);font-size:18px}.art-float small{display:block;font-weight:400;color:var(--mut);font-size:12px}
.float-code{left:-2%;bottom:14%;animation-delay:-2s}.float-phone{right:-1%;bottom:2%;animation-delay:-4.5s}
.section-heading{display:flex;justify-content:space-between;align-items:end;gap:24px;flex-wrap:wrap;margin-bottom:clamp(24px,3vw,44px)}.section-heading h2{font-size:clamp(34px,4.6vw,72px);font-weight:810}.section-heading>p{margin:0;color:var(--mut);font-size:clamp(16px,1.3vw,20px);max-width:24em}
.ecosystem{margin-bottom:clamp(64px,9vw,140px)}
.ecosystem-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,340px),1fr));gap:clamp(16px,1.8vw,28px)}
.space-card{--c1:var(--pri);--c2:var(--cy);position:relative;display:flex;flex-direction:column;gap:18px;padding:clamp(24px,2.2vw,36px);border:1px solid var(--line);border-radius:32px;background:var(--card);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow);transition:transform .25s,border-color .25s;overflow:hidden}
.space-card::after{content:'';position:absolute;inset:auto -20% -45% auto;width:70%;aspect-ratio:1;border-radius:50%;background:radial-gradient(circle,color-mix(in srgb,var(--c1) 30%,transparent),transparent 68%);pointer-events:none}
.space-card:hover{transform:translateY(-6px);border-color:color-mix(in srgb,var(--c1) 55%,var(--line))}
.study-card{grid-column:span 2;--c1:var(--pri);--c2:var(--pri2)}.apk-card{--c1:#34d399;--c2:#a3e635}.ios-card{--c1:#94a3b8;--c2:#cbd5e1}.game-card{--c1:#fbbf24;--c2:#fb923c}.cad-card{--c1:#38bdf8;--c2:#6366f1}.music-card{--c1:#f472b6;--c2:#a855f7}.badminton-card{--c1:#2dd4bf;--c2:#a3e635}
.study-card::before{content:'';position:absolute;inset:0;border-radius:inherit;padding:1.5px;pointer-events:none;background:conic-gradient(from var(--a),transparent 0 60%,var(--cy) 78%,var(--pri) 90%,var(--pk) 97%,transparent);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;animation:spin 7s linear infinite}
@keyframes spin{to{--a:360deg}}
.card-top{display:flex;justify-content:space-between;align-items:center;position:relative;z-index:1}
.space-icon{width:56px;height:56px;border-radius:18px;display:grid;place-items:center;font-size:26px;font-weight:800;color:#0b0f1c;background:linear-gradient(145deg,var(--c1),var(--c2));box-shadow:0 14px 28px -12px var(--c1)}.space-icon svg{width:28px;height:28px;stroke:currentColor;fill:none}.text-icon{font-size:15px;letter-spacing:.02em}
.status{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:650;padding:6px 13px;border-radius:999px;border:1px solid var(--line);background:var(--soft)}.status i{width:8px;height:8px;border-radius:50%;background:#34d399;box-shadow:0 0 0 3px color-mix(in srgb,#34d399 25%,transparent)}.status.developing i{background:#fbbf24;box-shadow:0 0 0 3px color-mix(in srgb,#fbbf24 25%,transparent)}
.card-copy{position:relative;z-index:1;display:grid;gap:10px;flex:1}.card-domain{font-size:12.5px;font-family:ui-monospace,SFMono-Regular,monospace;color:var(--mut)}
.space-card h3{font-size:clamp(26px,2.4vw,38px);font-weight:790}.space-card h3 span{color:var(--c1)}.card-copy>p{margin:0;color:var(--mut);font-size:15.5px}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}.tags span{padding:6px 13px;border-radius:999px;font-size:13px;font-weight:550;background:var(--soft);border:1px solid var(--line)}
.card-link{position:relative;z-index:1;display:inline-flex;align-items:center;gap:8px;font-weight:700;text-decoration:none;color:var(--fg);padding:12px 20px;border-radius:16px;border:1px solid var(--line);background:var(--card);align-self:flex-start;transition:.2s}.space-card:hover .card-link{color:#0b0f1c;background:linear-gradient(120deg,var(--c1),var(--c2));border-color:transparent}
.study-decoration{position:absolute;right:28px;top:28px;display:flex;gap:10px;z-index:1}.study-decoration span{padding:9px 14px;border-radius:14px;font-weight:700;background:var(--soft);border:1px solid var(--line);color:var(--pri);animation:float 6s ease-in-out infinite}.study-decoration span:nth-child(2){animation-delay:-2s}.study-decoration span:nth-child(3){animation-delay:-4s}
.study-card .card-top{padding-right:200px}
.about{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(28px,6vw,120px);align-items:start;padding:clamp(32px,5vw,72px);margin-bottom:clamp(60px,8vw,110px);border:1px solid var(--line);border-radius:40px;background:var(--card);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow)}
.about h2{font-size:clamp(32px,4vw,64px);font-weight:810}.about p{color:var(--mut);font-size:clamp(16px,1.25vw,19px);margin:0 0 16px}
footer{padding:clamp(28px,4vw,56px) clamp(16px,4vw,72px) 100px;border-top:1px solid var(--line)}
.footer-main{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.social-links{display:flex;flex-wrap:wrap;gap:8px}.social-links a{padding:10px 16px;border-radius:14px;text-decoration:none;font-weight:600;font-size:14px;color:var(--fg);border:1px solid var(--line);background:var(--card);transition:.2s}.social-links a:hover{background:var(--soft);transform:translateY(-2px)}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:28px;color:var(--mut);font-size:14px}.footer-bottom a{font-weight:650;text-decoration:none}
.music-toggle{position:fixed;right:20px;bottom:20px;z-index:60;display:flex;align-items:center;gap:9px;border:1px solid var(--line);border-radius:999px;padding:12px 18px;background:var(--card);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);color:var(--fg);font:650 13.5px InterV,system-ui,sans-serif;box-shadow:var(--shadow);cursor:pointer;transition:.2s}.music-toggle:hover{background:var(--soft);transform:translateY(-2px)}.music-toggle svg{width:18px;height:18px;stroke:var(--pri);fill:none}.music-toggle[aria-pressed=true] svg{animation:pulse2 1.4s ease-in-out infinite}@keyframes pulse2{50%{transform:scale(1.2)}}
@media(max-width:1100px){.study-card{grid-column:auto}.study-card .card-top{padding-right:0}.study-decoration{display:none}}
@media(max-width:900px){.hero,.about{grid-template-columns:1fr}.hero-art{max-height:420px;order:-1}.site-header nav{display:none}.site-header{border-radius:20px;top:8px}}
@media(max-width:560px){.header-badminton{display:none}.site-header{margin-inline:10px;padding:8px 10px 8px 14px}.brand small{display:none}.art-float{display:none}.about{border-radius:28px}.music-toggle{right:12px;bottom:12px;padding:10px 14px}.music-toggle span{max-width:130px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

body,main{max-width:100vw}.float-code{left:0}.float-phone{right:0}.art-float{max-width:80%}.hero-art{max-width:100%}.hero-art,.hero-copy{min-width:0}
@media(max-width:560px){.header-actions{gap:8px}.header-study{padding:9px 14px}.hero-actions{gap:12px}.space-card{border-radius:26px}.study-card .card-top{padding-right:0}.footer-main{align-items:flex-start}}
.hero-art{overflow:hidden;overflow:clip}.art-orbit{max-width:100%}
.card-copy{align-content:start;align-items:start}
.tags{align-self:start;align-items:center}
.tags span,.status,.card-link,.study-decoration span{display:inline-flex;align-items:center;justify-content:center;line-height:1.2}
.tags span{min-height:34px;padding-block:0}
.space-icon{line-height:1}
.card-link{min-height:46px}


/* Wind: soft drifting lines used as the footer background. */
.wind-bg{position:absolute;inset:auto 0 0;height:min(280px,46vh);overflow:hidden;pointer-events:none;z-index:0;-webkit-mask-image:linear-gradient(to top,#000 40%,transparent);mask-image:linear-gradient(to top,#000 40%,transparent)}
.wind-bg svg{position:absolute;left:0;bottom:0;width:200%;height:100%;display:block;animation:wind-drift 26s linear infinite}
.wind-bg .wl{fill:none;stroke:var(--pri);stroke-width:2;stroke-linecap:round;opacity:calc(var(--o)*.7);stroke-dasharray:260 90 120 70;animation:wind-gust var(--t) linear infinite}
.wind-bg .wl-b{stroke:var(--cy)}.wind-bg .wl-d{stroke:var(--pk,#f472b6)}
@keyframes wind-drift{to{transform:translateX(-50%)}}
@keyframes wind-gust{to{stroke-dashoffset:-1040}}
footer{position:relative}footer>*:not(.wind-bg){position:relative;z-index:1}
@media(prefers-reduced-motion:reduce){.wind-bg svg,.wind-bg .wl{animation:none}}
.wind-card{--c1:#38d6f0;--c2:#8f9bff}
.wind-status{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr));gap:14px}.wind-status div{padding:18px 20px;border:1px solid var(--line);border-radius:22px;background:var(--card);backdrop-filter:blur(14px)}.wind-status span{display:block;font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--mut)}.wind-status strong{display:block;font-size:19px;margin-top:4px}
.wind-art{position:relative;aspect-ratio:1.05;max-height:520px;display:grid;place-items:center}.wind-art .wind-orb{width:min(70%,340px);aspect-ratio:1;border-radius:50%;display:grid;place-items:center;font-size:clamp(64px,9vw,120px);font-weight:830;letter-spacing:-.04em;color:#fff;background:radial-gradient(circle at 30% 25%,var(--cy),var(--pri) 55%,var(--pri2));box-shadow:0 60px 100px -40px var(--pri);animation:wind-float 7s ease-in-out infinite}@keyframes wind-float{50%{transform:translateY(-14px)}}@media(prefers-reduced-motion:reduce){.wind-art .wind-orb{animation:none}}
.wind-list{display:grid;gap:14px;margin:0;padding:0;list-style:none}.wind-list li{padding:20px 24px;border:1px solid var(--line);border-radius:24px;background:var(--card);backdrop-filter:blur(14px)}.wind-list b{display:block;font-size:18px;margin-bottom:4px}.wind-list span{color:var(--mut)}
.wind-bg .wl-a{--o:.55;--t:26s}.wind-bg .wl-b{--o:.4;--t:34s}.wind-bg .wl-c{--o:.3;--t:44s}.wind-bg .wl-d{--o:.22;--t:58s}