:root{--cream:#F7F3E8;--ink:#2F2B2C;--yellow:#D8CA84;--olive:#66705C;--line:#dcd8ca}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0;background:var(--cream);color:var(--ink);font-family:Arial,sans-serif;font-size:16px;line-height:1.65}a{color:inherit;text-underline-offset:5px}a:focus-visible,summary:focus-visible,div[tabindex]:focus-visible{outline:3px solid var(--olive);outline-offset:5px}.skip{position:absolute;left:16px;top:-80px;background:white;padding:10px;z-index:9}.skip:focus{top:10px}header,main,footer{max-width:1440px;margin:auto}header{padding:26px 5%;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}.wordmark{font-size:31px;font-weight:700;text-decoration:none;letter-spacing:-2px;white-space:nowrap}.wordmark span{font-size:12px;vertical-align:top;letter-spacing:0;margin-left:4px}nav{display:flex;gap:30px;align-items:center}nav a{text-decoration:none;font-size:14px}.nav-contact{border-bottom:1px solid;padding:6px 0}section{padding:88px 5%;border-bottom:1px solid var(--line)}.eyebrow{font-size:12px;letter-spacing:1.7px;font-weight:700;margin:0 0 25px}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(42px,6.4vw,88px);line-height:1.12;font-weight:400;letter-spacing:-4px;margin:25px 0 48px}h1 em{font-style:normal;color:var(--olive)}.hero{padding-top:65px;padding-bottom:0;background:radial-gradient(ellipse at 95% 0%,#e9e0b4 0,transparent 50%)}.hero-bottom{display:flex;justify-content:space-between;gap:40px;align-items:end}.hero-bottom p{max-width:550px;font-size:20px;line-height:1.6;margin:0}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:35px;text-decoration:none;background:var(--ink);color:var(--cream);padding:18px 25px;font-size:15px}.button:hover{background:var(--olive)}.hero-foot{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding:23px 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h3{font-size:19px;line-height:1.4;margin-bottom:12px}.service .price{font-size:21px;color:#515a47;font-weight:700;margin-bottom:12px}.service p{font-size:13px}.service a{font-size:12px;margin-top:auto;padding-top:10px}details{margin-top:30px;border:1px solid var(--line);padding:22px}summary{cursor:pointer;font-weight:700}details p{font-size:13px;margin-top:20px}.table-scroll{overflow:auto}table{border-collapse:collapse;min-width:650px;width:100%;font-size:12px;text-align:left}td,th{padding:13px;border-bottom:1px solid var(--line)}thead{background:var(--yellow)}.extra{background:#eeeadf;padding:30px;margin-top:25px}.extra p{max-width:850px;font-size:14px}.extra a{font-size:14px}.contact{background:var(--yellow);text-align:center;padding-top:80px;padding-bottom:75px}.contact h2{font-size:clamp(40px,5vw,68px)}.contact .button{margin:12px 0 22px}.email{display:block;font-size:20px}.small{font-size:12px;margin-top:25px;margin-bottom:0}footer{padding:30px 5%;display:flex;justify-content:space-between;align-items:center;gap:20px}footer p,footer>a:last-child{font-size:11px;margin:0}@media(max-width:800px){header{align-items:start}nav{gap:14px;flex-wrap:wrap;justify-content:end;max-width:260px}nav a{font-size:12px}.nav-contact{padding:0}section{padding:55px 6%}h1{letter-spacing:-2px}.hero{padding-top:45px}.hero-bottom{display:block}.hero-bottom p{font-size:18px}.hero-bottom .button{margin-top:25px}.hero-foot{font-size:9px;gap:25px}.hero-foot span:last-child{text-align:right}.about,.section-heading{grid-template-columns:1fr;gap:18px}.lead{font-size:21px}.projects{gap:14px}.project{padding:22px}.project h3{font-size:21px}.project-top{display:block}.project-top span{display:block}.practice-grid{grid-template-columns:1fr;gap:20px}.services{grid-template-columns:repeat(2,1fr)}.service{padding:22px}footer{flex-wrap:wrap}}@media(max-width:480px){nav{max-width:220px;column-gap:12px;row-gap:6px}.wordmark{font-size:27px}.projects,.services{grid-template-columns:1fr}h1{font-size:42px}.hero-foot{margin-top:35px}.contact .button{font-size:13px;padding:16px 18px;gap:8px}.project strong{font-size:40px}.eyebrow{font-size:10px;letter-spacing:1.2px}footer p{width:100%;order:3}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
/* Sơn Đầu Hỏa — personal identity, revision 2 */
:root{--cream:#fff3e3;--ink:#211c19;--yellow:#f15b3d;--olive:#ad3824;--line:#d8c7b9;--fire:#ff7146;--dark:#191715}body{background:var(--cream)}header{background:var(--dark);color:var(--cream);border-color:#40332b;position:relative;z-index:2}.wordmark{font-weight:800;letter-spacing:-2.5px}nav a{transition:color .25s}nav a:hover{color:var(--fire)}.scroll-progress{position:fixed;top:0;left:0;height:3px;width:0;background:#ff7146;z-index:20;transition:width .15s linear}.hero{position:relative;isolation:isolate;overflow:hidden;background:#191715;color:var(--cream);min-height:780px;padding-top:58px}.hero:before{content:'';position:absolute;inset:0;z-index:-2;background:radial-gradient(ellipse at 76% 42%,#73372066,transparent 52%),linear-gradient(90deg,transparent 49.9%,#ffffff06 50%,transparent 50.1%);background-size:auto,100px 100px}.hero>.eyebrow{color:#f1a588;position:relative;z-index:2;font-size:11px}h1{font-size:clamp(52px,6.9vw,98px);font-weight:700;letter-spacing:-5px;line-height:1.08;position:relative;z-index:2;max-width:850px;margin:34px 0 42px}.hero-line{display:block}.hero-line:nth-child(2){padding-left:65px}h1 em{color:#ff7146;font-weight:400}h2 em{font-style:normal;color:var(--olive)}.hero-art{position:absolute;width:510px;right:2%;top:15px;z-index:-1;transform:rotate(8deg);pointer-events:none}.hero-art svg{width:100%;overflow:visible;filter:drop-shadow(0 25px 60px #e94c2526)}.flame{transform-origin:310px 400px;animation:fire-breathe 6s ease-in-out infinite}.orbit{transform-origin:310px 330px;animation:orbit 80s linear infinite}.art-caption{position:absolute;right:0;top:160px;writing-mode:vertical-rl;letter-spacing:3px;font-size:9px;color:#ce9a7c}.art-tag{position:absolute;bottom:70px;left:160px;font-size:10px;letter-spacing:2px;color:#e3b89e}.hero-bottom{position:relative;z-index:2;max-width:100%;gap:80px}.hero-bottom p{font-size:17px;max-width:475px;color:#dacbbb}.hero-bottom .button{background:#f26343;color:#191715;min-width:230px;font-weight:700}.button{border-radius:3px;transition:transform .3s,background .3s,box-shadow .3s}.button:hover{transform:translateY(-4px);box-shadow:0 12px 32px #0003;background:#ff8a60}.button span{transition:transform .3s}.button:hover span{transform:translate(4px,4px)}.hero-foot{position:relative;color:#b79b87;border-color:#4c352b;margin-top:45px}.ticker{background:#f26343;color:var(--dark);overflow:hidden;padding:13px 0;border-top:1px solid #f7886b;border-bottom:1px solid #a73724;transform:rotate(-1deg);margin:0 -0px;position:relative;z-index:1}.ticker>div{white-space:nowrap;width:max-content;animation:marquee 32s linear infinite;font-size:18px;letter-spacing:2px;font-weight:700}.ticker i{font-size:25px;font-style:normal;padding:0 28px;vertical-align:middle}.about{padding-top:110px}.about>div:first-child{position:relative}.about>div:first-child:after{content:'✳';font-size:150px;line-height:1;color:#d9bca7;display:block;margin-top:38px;animation:orbit 45s linear infinite;width:150px}.tags span{border-color:#cdb4a0;background:#eedccb;transition:background .3s,transform .3s}.tags span:hover{background:#ffc1a2;transform:translateY(-3px)}.eyebrow{color:#99422e}.section-heading{gap:50px}h2{font-weight:600}.projects{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.project{position:relative;background:#ead8c6!important;border-radius:6px;overflow:hidden;padding:0 30px 30px;transition:transform .4s,box-shadow .4s}.project:nth-child(4n+2){background:#27211d!important;color:var(--cream)}.project:nth-child(4n+3){background:#c7482e!important;color:#fff3e3}.project:nth-child(4n+4){background:#f0b795!important}.project:hover{transform:translateY(-7px);box-shadow:0 18px 40px #4a1d1c20}.project-visual{position:relative;width:calc(100% + 60px);margin:0 -30px 26px;height:230px;background:radial-gradient(circle at 30% 20%,#fff3 0,transparent 55%);display:flex;align-items:center;justify-content:center;border-bottom:1px solid #85583e30;overflow:hidden}.project-visual:before{content:'';position:absolute;inset:0;background-image:linear-gradient(#80573d0d 1px,transparent 1px),linear-gradient(90deg,#80573d0d 1px,transparent 1px);background-size:24px 24px}.project-visual svg{width:82%;height:75%;fill:none;stroke:currentColor;stroke-width:3;opacity:.8;transition:transform .7s;stroke-linecap:round;stroke-linejoin:round}.project:hover .project-visual svg{transform:scale(1.07) rotate(-3deg)}.project-visual .thin{stroke-width:.7;opacity:.3}.project-visual>span{position:absolute;left:24px;bottom:15px;font-size:9px;letter-spacing:2px;opacity:.65}.project-top{margin-bottom:15px}.project h3{font-size:27px;max-width:390px}.project strong{font-size:58px;font-weight:600;letter-spacing:-3px}.project:last-child{grid-column:1 / -1;display:grid;grid-template-columns:1fr 1fr;column-gap:40px;padding:30px}.project:last-child .project-visual{grid-column:1;grid-row:1/6;width:100%;height:260px;margin:0;border:1px solid #ffd3af40}.project:last-child>.project-top,.project:last-child>h3,.project:last-child>p,.project:last-child>strong{grid-column:2}.project:last-child strong{padding-top:5px}.practice{background:var(--dark);color:var(--cream);position:relative;overflow:hidden}.practice:after{content:'✳';position:absolute;right:-20px;top:0;font-size:420px;line-height:1;color:#f263430c;pointer-events:none}.practice .eyebrow{color:#f9a384}.practice h2 em{color:#ff8158}.practice-grid{position:relative;z-index:1;gap:24px}.practice-grid article{background:#ffffff05;border:1px solid #725543;padding:30px;border-radius:6px;transition:border-color .3s,transform .3s}.practice-grid article:hover{border-color:#ff8158;transform:translateY(-5px)}.practice-grid span{color:#ff9e7a}.services{border:0;gap:16px;grid-template-columns:repeat(3,minmax(0,1fr))}.service{background:#f7e8d7;border:1px solid #d8bda7;border-radius:5px;transition:background .3s,border-color .3s,transform .3s;padding:27px}.service:hover{background:#ffe0c8;border-color:#bf6b49;transform:translateY(-4px)}.service h3{font-size:18px}.service .price{color:#a43220}.service a{text-decoration:none;border-top:1px solid #d5bba5;padding-top:15px;margin-top:auto}.note{border-color:#d35335}.extra{background:#ead6c1;border-radius:5px}.contact{background:#ee6041;color:var(--dark);position:relative;overflow:hidden}.contact:before{content:'✳';position:absolute;font-size:650px;line-height:1;color:#8e2e1e16;left:-190px;top:-130px;pointer-events:none;animation:orbit 90s linear infinite}.contact>*{position:relative}.contact .eyebrow{color:#48261c}.contact h2{font-weight:600}.contact h2 em{color:#fff0da}.contact .button{background:#211c19;color:#fff3e3}.contact .button:hover{background:#4b2c23}footer{background:var(--dark);color:var(--cream)}.js-motion .reveal{opacity:0;transform:translateY(32px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.65,.2,1)}.js-motion .reveal.visible{opacity:1;transform:translateY(0)}.js-motion .hero-line{animation:enter .9s both}.js-motion .hero-line:nth-child(2){animation-delay:.13s}.js-motion .hero-line:nth-child(3){animation-delay:.26s}@keyframes enter{from{opacity:0;transform:translateY(35px)}to{opacity:1;transform:translateY(0)}}@keyframes marquee{to{transform:translateX(-50%)}}@keyframes orbit{to{transform:rotate(360deg)}}@keyframes fire-breathe{50%{transform:translateY(-12px) rotate(-3deg);filter:brightness(1.12)}}@media(min-width:1100px){.hero-art{right:3%;width:520px}.hero h1{max-width:850px}.hero-bottom p{max-width:540px}}@media(max-width:1000px){.hero-art{right:-65px;width:440px;top:70px;opacity:.7}.hero{min-height:730px}h1{font-size:72px;max-width:680px}.hero-line:nth-child(2){padding-left:30px}.services{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:800px){.hero{min-height:0;padding-bottom:0}.hero-art{top:55px;right:-100px;width:390px;opacity:.42}h1{font-size:clamp(47px,8.5vw,67px);letter-spacing:-3px}.hero-bottom p{max-width:470px;font-size:17px}.hero-bottom .button{min-width:0}.hero-foot{margin-top:35px}.about{padding-top:70px}.about>div:first-child:after{display:none}.project-visual{height:180px}.project h3{font-size:22px}.project strong{font-size:45px}.project:last-child{display:flex;grid-column:auto;padding:0 22px 22px}.project:last-child .project-visual{width:calc(100% + 44px);height:180px;margin:0 -22px 26px;border:0}.practice-grid article{padding:24px}.contact:before{font-size:420px;left:-180px}.ticker>div{font-size:15px}.ticker i{font-size:20px}}@media(max-width:480px){header{padding:22px 6%}nav{max-width:215px}.hero{padding-top:30px}.hero>.eyebrow{max-width:240px;font-size:9px;line-height:1.8}.hero-art{top:45px;right:-155px;width:355px;opacity:.36}h1{font-size:48px;line-height:1.12;letter-spacing:-2.7px;margin-top:25px;margin-bottom:33px}.hero-line:nth-child(2){padding-left:0}h2{font-size:34px;letter-spacing:-1.5px}.hero-bottom p{font-size:16px}.projects,.services{grid-template-columns:1fr}.project{padding:0 24px 24px}.project-visual{width:calc(100% + 48px);margin-left:-24px;margin-right:-24px;height:195px}.project-top{display:flex;font-size:9px}.project h3{font-size:25px}.project strong{font-size:52px}.project:last-child{padding:0 24px 24px}.project:last-child .project-visual{width:calc(100% + 48px);margin-left:-24px;margin-right:-24px;height:195px}.service{padding:24px}.contact h2{font-size:39px}.contact p br{display:none}.art-caption,.art-tag{display:none}.hero-foot{letter-spacing:.8px}.email{font-size:19px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}.js-motion .reveal{opacity:1;transform:none}}
/* Keep the moving ribbon within the viewport. */
.ticker{transform:none}
/* Living illustrations: small loops, enabled only while visible. */
.motion-ready .project-visual svg{overflow:visible}
.motion-ready .project-visual path,.motion-ready .project-visual circle{animation-play-state:paused!important}
.motion-ready .project.in-view .project-visual path,.motion-ready .project.in-view .project-visual circle{animation-play-state:running!important}
.motion-ready .project:nth-child(1) .project-visual path:first-child{stroke-dasharray:600;animation:chart-draw 5s ease-in-out infinite}
.motion-ready .project:nth-child(1) .project-visual circle{transform-box:fill-box;transform-origin:center;animation:point-pulse 2.5s ease-in-out infinite}
.motion-ready .project:nth-child(2) .project-visual path:first-child{animation:bubble-float 4s ease-in-out infinite}
.motion-ready .project:nth-child(2) .project-visual circle{animation:bubble-float 4s ease-in-out -.8s infinite}
.motion-ready .project:nth-child(3) .project-visual circle{animation:wheel-bounce 2s ease-in-out infinite}
.motion-ready .project:nth-child(3) .project-visual path{animation:car-cruise 4s ease-in-out infinite}
.motion-ready .project:nth-child(4) .project-visual circle{transform-box:fill-box;transform-origin:center;animation:point-pulse 4s ease-in-out infinite}
.motion-ready .project:nth-child(4) .project-visual circle:nth-child(2){animation-delay:-1s}
.motion-ready .project:nth-child(5) .project-visual path{animation:mountain-rise 5s ease-in-out infinite}
.motion-ready .project:nth-child(6) .project-visual circle{transform-box:fill-box;transform-origin:center;animation:sparkle 4s ease-in-out infinite}
.motion-ready .project:nth-child(6) .project-visual path:first-child{animation:bubble-float 5s ease-in-out infinite}
.motion-ready .project:nth-child(7) .project-visual path{transform-box:fill-box;transform-origin:center;animation:sound-wave 1.4s ease-in-out infinite}
.project-visual .wave-bar:nth-child(3n){animation-delay:-.4s!important}.project-visual .wave-bar:nth-child(3n + 1){animation-delay:-.8s!important}
.project-visual:after{content:'';position:absolute;inset:0;pointer-events:none;background:radial-gradient(circle at var(--pointer-x,50%) var(--pointer-y,50%),#fff2,transparent 58%);opacity:0;transition:opacity .4s}
.project:hover .project-visual:after{opacity:1}.project.in-view .project-visual>span{animation:caption-glow 5s ease-in-out infinite}
.motion-ready .project-visual svg{transform:perspective(700px) rotateX(var(--tilt-x,0deg)) rotateY(var(--tilt-y,0deg));transition:transform .35s ease-out}.motion-ready .project:hover .project-visual svg{transform:perspective(700px) rotateX(var(--tilt-x,0deg)) rotateY(var(--tilt-y,0deg)) scale(1.04)}
.project strong{font-variant-numeric:tabular-nums;min-height:1.2em}.practice-grid article{position:relative;overflow:hidden}.practice-grid article:after{content:'↗';position:absolute;right:22px;top:16px;font-size:25px;color:#ff9e7a;transition:transform .35s}.practice-grid article:hover:after{transform:translate(4px,-4px)}
@keyframes chart-draw{0%,10%{stroke-dashoffset:600;opacity:.25}50%,85%{stroke-dashoffset:0;opacity:1}100%{stroke-dashoffset:0;opacity:.25}}
@keyframes point-pulse{50%{transform:scale(1.15);opacity:.5}}
@keyframes bubble-float{50%{transform:translateY(-7px)}}
@keyframes wheel-bounce{50%{transform:translateY(-3px)}}
@keyframes car-cruise{50%{transform:translateX(8px)}}
@keyframes mountain-rise{50%{transform:translateY(-5px);opacity:.55}}
@keyframes sparkle{50%{transform:scale(.8) rotate(35deg);opacity:.45}}
@keyframes sound-wave{50%{transform:scaleY(.35);opacity:.6}}
@keyframes caption-glow{50%{opacity:.95}}
@media(prefers-reduced-motion:reduce){.motion-ready .project-visual path,.motion-ready .project-visual circle,.project.in-view .project-visual>span{animation:none!important}.motion-ready .project-visual svg,.motion-ready .project:hover .project-visual svg{transform:none!important}}