@font-face{font-family:'SG';font-style:normal;font-weight:500;font-display:swap;src:url(../fonts/sg-500-vi.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:'SG';font-style:normal;font-weight:500;font-display:swap;src:url(../fonts/sg-500-la.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}@font-face{font-family:'SG';font-style:normal;font-weight:700;font-display:swap;src:url(../fonts/sg-700-vi.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:'SG';font-style:normal;font-weight:700;font-display:swap;src:url(../fonts/sg-700-la.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}@font-face{font-family:'NS';font-style:normal;font-weight:400;font-display:swap;src:url(../fonts/ns-400-vi.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:'NS';font-style:normal;font-weight:400;font-display:swap;src:url(../fonts/ns-400-la.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}@font-face{font-family:'NS';font-style:normal;font-weight:600;font-display:swap;src:url(../fonts/ns-600-vi.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:'NS';font-style:normal;font-weight:600;font-display:swap;src:url(../fonts/ns-600-la.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}
:root{--bg:#f8fafc;--paper:#fff;--ink:#0f172a;--mute:#475569;--line:#e2e8f0;--blue:#2563eb;--blue-d:#1d4ed8;--blue-soft:#eff6ff;--blue-soft2:#dbeafe;--max:1080px;--g:22px;--head:'SG',system-ui,sans-serif;--ff:'NS',system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;--mono:ui-monospace,'SFMono-Regular',Menlo,Consolas,monospace}
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:76px;overflow-x:clip}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.7 var(--ff);overflow-x:hidden}
img,svg{max-width:100%;height:auto}
.ic{flex:none;display:inline-block;vertical-align:-3px}
a{color:var(--blue-d);text-underline-offset:3px}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:6px}
button{font:inherit;cursor:pointer}
h1,h2,h3{font-family:var(--head);font-weight:700;line-height:1.15;margin:0 0 .5em;letter-spacing:-.02em}
.sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:8px;z-index:99;background:#fff;padding:8px 14px}.skip:focus{left:8px}
.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--g)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--blue);color:#fff;text-decoration:none;font-weight:600;border-radius:10px;padding:0 20px;min-height:48px;border:0}
.btn:hover{background:var(--blue-d);color:#fff}
.btn--line{background:#fff;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--line)}
.btn--line:hover{background:var(--bg);border-color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--ink)}
.btn--light{background:#fff;color:var(--ink)}
.btn--light:hover{background:var(--blue-soft);color:var(--blue-d)}
.btn--ghost{background:none;color:#fff;box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.5)}
.btn--ghost:hover{background:rgba(255,255,255,.12)}
.btn--sm{min-height:40px;padding:0 14px;font-size:15px}
.btn .ic{flex:none}
/* header */
.hd{position:sticky;top:0;z-index:50;background:rgba(248,250,252,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.hd__in{display:flex;align-items:center;gap:20px;min-height:62px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font:700 18px var(--head)}
.brand__mk{display:inline-grid;place-items:center;width:36px;height:36px;border-radius:10px;background:var(--blue);color:#fff;font:700 14px var(--mono);letter-spacing:.02em}
.hd__nav{margin-left:auto}
.hd__nav ul{display:flex;gap:4px;list-style:none;margin:0;padding:0}
.hd__nav a{position:relative;display:block;padding:8px 12px;border-radius:8px;text-decoration:none;color:var(--mute);font-weight:600;font-size:15px}
.hd__nav a:hover{background:var(--blue-soft);color:var(--blue-d)}
.hd__nav a.is-active{color:var(--blue-d)}
.hd__nav a.is-active::after{content:'';position:absolute;left:12px;right:12px;bottom:-1px;height:2px;background:var(--blue)}
.hd__btn{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;position:relative}
.hd__btn span:first-child,.hd__btn span:first-child::before,.hd__btn span:first-child::after{position:absolute;left:12px;right:12px;height:2px;background:var(--ink);content:''}
.hd__btn span:first-child{top:21px}.hd__btn span:first-child::before{top:-6px;left:0;right:0}.hd__btn span:first-child::after{top:6px;left:0;right:0}
/* hero */
.hero{padding:56px 0 30px}
.hero__grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:40px;align-items:center}
.hero__hi{font:400 17px var(--ff);color:var(--mute);margin:0 0 8px}
.hero__h{font-size:clamp(36px,5.6vw,56px);margin-bottom:10px}
.hero__role{display:block;font-weight:500;color:var(--mute);margin:0 0 18px;font-size:18px}
.hero__p{color:var(--mute);margin:0 0 26px;max-width:560px}
.hero__cta{display:flex;flex-wrap:wrap;gap:10px}
.hero__side{display:flex;flex-direction:column;gap:20px}
.avatar{display:grid;place-items:center;padding:8px 24px 0}
.avatar__ring{position:relative;width:min(100%,240px);aspect-ratio:1/1;border-radius:9999px;background:linear-gradient(160deg,var(--blue-soft2),var(--blue-soft));display:grid;place-items:center}
.avatar__mk{width:76%;height:76%;border-radius:9999px;background:var(--blue);color:#fff;display:grid;place-items:center;font:700 clamp(32px,7vw,56px) var(--head);letter-spacing:0;box-shadow:0 20px 40px -20px rgba(37,99,235,.5)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:44px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stats div{padding:18px 4px;display:flex;flex-direction:column}
.stats div+div{border-left:1px solid var(--line);padding-left:20px}
.stats b{font:700 34px var(--head);color:var(--ink)}
.stats span{font-size:14px;color:var(--mute)}
/* sections */
.sec{padding-top:56px;padding-bottom:10px}
.sec h2{font-size:clamp(24px,3vw,32px);display:flex;align-items:center;gap:12px}
.sec h2::before{content:'';display:inline-block;width:5px;height:1em;background:var(--blue);border-radius:3px;flex:none}
.sec__sub{color:var(--mute);margin:-4px 0 18px;max-width:720px}
.tl{list-style:none;margin:0;padding:0;border-left:2px solid var(--line);margin-left:6px}
.tl__i{display:grid;grid-template-columns:110px minmax(0,1fr);gap:16px;position:relative;padding:0 0 26px 22px}
.tl__i::before{content:'';position:absolute;left:-8px;top:8px;width:14px;height:14px;border-radius:50%;background:var(--bg);box-shadow:inset 0 0 0 3px var(--blue)}
.tl__i:first-child::before{background:var(--blue);box-shadow:inset 0 0 0 3px var(--blue-d)}
.tl__y{font:600 15px var(--ff);color:var(--mute);padding-top:3px}
.tl__c h3{font-size:21px;margin-bottom:4px}
.tl__c h3 small{display:block;font:500 15px var(--ff);color:var(--blue-d);margin-top:4px}
.tl__c p{margin:0 0 8px;color:var(--mute)}
.tags{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.tags li{font:400 14px/1.3 var(--ff);background:#fff;color:var(--ink);border:1px solid var(--line);box-shadow:0 1px 2px rgba(15,23,42,.04);border-radius:9999px;padding:7px 14px 7px 10px;display:flex;align-items:center;gap:6px}
.tags li::before{content:'';width:7px;height:7px;border-radius:50%;background:var(--blue);flex:none}
.svc{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.svc__i{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px}
.svc__ic{display:grid;place-items:center;width:52px;height:52px;border-radius:14px;background:var(--blue-soft);color:var(--blue-d);margin-bottom:14px}
.svc__i h3{font-size:22px}
.svc__i p{margin:0;color:var(--mute)}
.skills{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.skills__g{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px}
.skills__g h3{font-size:18px}
.proj{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.proj__i{position:relative;display:flex;flex-direction:column;gap:10px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 22px 26px;text-decoration:none;color:var(--ink);transition:border-color .2s,transform .2s}
.proj__i:hover{border-color:var(--blue);transform:translateY(-3px)}
.proj__mk{display:inline-grid;place-items:center;width:44px;height:44px;border-radius:12px;background:var(--blue);color:#fff;font:700 17px var(--head)}
.proj__i b{font:700 20px var(--head)}
.proj__i span{color:var(--mute);font-size:15px}
.proj__i i{position:absolute;right:18px;top:18px;font-style:normal;font-size:20px;color:var(--blue)}
.info{background:var(--blue-soft);border-radius:16px;padding:22px}
.info h3{font-size:18px;margin-bottom:14px}
.info ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.info li{display:flex;align-items:center;gap:10px;color:var(--ink);font-size:15px}
.info .ic{color:var(--blue-d);flex:none}
.cta{display:grid;grid-template-columns:minmax(0,1.4fr) auto;gap:24px;align-items:center;background:var(--ink);color:#cbd5e1;border-radius:22px;padding:34px}
.cta h2{color:#fff;font-size:clamp(24px,3vw,32px);display:block}
.cta h2::before{display:none}
.cta p{margin:0}
.cta__acts{display:flex;flex-direction:column;gap:10px}
/* page */
.pg{max-width:820px;padding-top:24px;padding-bottom:20px}
.pg__t{font-size:clamp(30px,4.6vw,44px)}
.crumb{display:flex;flex-wrap:wrap;gap:6px;align-items:center;color:var(--mute);font-size:14px;margin:0 0 14px}
.crumb a{color:var(--mute);text-decoration:none}
.crumb a:hover{color:var(--blue-d)}
.crumb span[aria-hidden]{color:var(--line)}
.crumb .is-current{color:var(--ink);font-weight:600}
.prose{overflow-wrap:anywhere}
.prose h2{font-size:26px;margin-top:1.4em}
.prose img{border-radius:12px}
.cs-scroll{overflow-x:auto}
.list{list-style:none;padding:0}
.list li{display:flex;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line);padding:12px 0}
.pg--404{text-align:center}
.code404{font:700 96px/1 var(--head);color:var(--blue);margin:0}
/* social badges */
.soc{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:10px}
.soc a{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:8px 14px;min-height:44px;text-decoration:none;color:var(--ink);font-weight:600;font-size:14px}
.soc a:hover{border-color:var(--blue);color:var(--blue-d)}
.soc .ic{color:var(--blue-d)}
/* feedback */
.fb{margin-top:34px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;display:flex;flex-wrap:wrap;gap:14px 20px;align-items:center;justify-content:space-between}
.fb__head{display:flex;gap:12px;align-items:center}
.fb__ic{display:grid;place-items:center;width:44px;height:44px;border-radius:12px;background:var(--blue-soft);color:var(--blue-d);flex:none}
.fb__t{font-size:19px;margin:0}
.fb__s{margin:2px 0 0;font-size:14px;color:var(--mute)}
.fb__btns{display:flex;gap:8px}
.fb__b{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:#fff;border-radius:10px;padding:0 14px;font-weight:600;min-height:44px}
.fb__b--up[aria-pressed=true]{border-color:#16a34a;color:#15803d}
.fb__b--down[aria-pressed=true]{border-color:#dc2626;color:#b91c1c}
.fb__form,.fb__thx{flex-basis:100%;margin:0}
.fb__form{display:grid;gap:8px}
.fb__form label{font-weight:600}
.fb__form textarea{border:1px solid var(--line);border-radius:10px;padding:10px;width:100%;font:inherit}
.fb__thx{color:#15803d;font-weight:600}
/* footer */
.ft{margin-top:56px;border-top:1px solid var(--line);padding:30px 0}
.ft__in{display:grid;gap:16px}
.ft__line{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:0;font-weight:600}
.ft__copy{margin:0;font-size:13px;color:var(--mute)}
@media (max-width:900px){
 .hd__btn{display:block;margin-left:auto}
 .hd__nav{position:absolute;left:0;right:0;top:62px;background:#fff;border-bottom:1px solid var(--line);display:none;padding:8px var(--g) 14px}
 .hd__nav.is-open{display:block}
 .hd__nav ul{flex-direction:column}
 .hd__nav a{padding:12px 4px;font-size:17px}
 .hero__grid{grid-template-columns:minmax(0,1fr);gap:28px}
 .hero__side{order:-1}
 .avatar{padding:0}
 .avatar__ring{width:min(50%,180px)}
 .skills{grid-template-columns:1fr 1fr}
 .proj{grid-template-columns:minmax(0,1fr)}
 .cta{grid-template-columns:minmax(0,1fr);padding:26px}
}
@media (max-width:640px){
 :root{--g:16px}
 .hero{padding-top:34px}
 .stats{grid-template-columns:1fr 1fr}
 .stats div:nth-child(3){border-left:0;padding-left:4px}
 .stats div:nth-child(n+3){border-top:1px solid var(--line)}
 .tl__i{grid-template-columns:minmax(0,1fr);gap:2px}
 .svc,.skills{grid-template-columns:minmax(0,1fr)}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}