:root{--bg:#f7f9fd;--surface:#fff;--text:#0f172a;--muted:#5b6478;--line:#e3e8f2;--brand:#1d4ed8;--brand2:#0ea5e9;--brand-soft:#e6eeff;--ok:#047857;--ok-bg:#d1fae5;--warn:#92400e;--warn-bg:#fef3c7;--shadow:0 1px 2px rgba(15,23,42,.05),0 12px 32px -12px rgba(15,23,42,.18);--r:22px}
@media (prefers-color-scheme:dark){:root{--bg:#0a0f1c;--surface:#121a2b;--text:#e8edf7;--muted:#9aa5bb;--line:#22304a;--brand:#5b8cff;--brand2:#38bdf8;--brand-soft:#17254a;--ok:#6ee7b7;--ok-bg:#073b2c;--warn:#fcd34d;--warn-bg:#3b2a07;--shadow:0 1px 2px rgba(0,0,0,.4),0 16px 40px -16px rgba(0,0,0,.7)}}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:72px}
body{margin:0;font:16px/1.7 "IBM Plex Sans Thai",system-ui,sans-serif;color:var(--text);background:var(--bg);overflow-x:hidden}
h1,h2,h3,.num,.brand b{font-family:Prompt,"IBM Plex Sans Thai",sans-serif;letter-spacing:-.01em;line-height:1.3}
h2{font-size:clamp(1.6rem,4vw,2.3rem);margin:0 0 8px}
h3{font-size:1.15rem;margin:10px 0 8px}
a{color:var(--brand)}
img{max-width:100%;display:block}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}
@media(min-width:768px){.wrap{padding:0 28px}}
section{padding:64px 0}
.lead{color:var(--muted);margin:0}
.note{color:var(--muted);font-size:.85rem;margin:8px 0 0}
.center{text-align:center}
.eyebrow{display:inline-block;font-weight:600;font-size:.85rem;color:var(--brand);background:var(--brand-soft);padding:4px 12px;border-radius:999px;margin-bottom:14px}
/* header */
.top{position:sticky;top:0;z-index:20;background:rgba(247,249,253,.72);background:color-mix(in srgb,var(--bg) 72%,transparent);backdrop-filter:blur(14px) saturate(1.4);-webkit-backdrop-filter:blur(14px) saturate(1.4);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:10px;height:60px}
.brand{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--text)}
.brand img{width:32px;height:32px;border-radius:8px}
.top nav{margin-left:auto;display:flex;gap:2px}
.top nav a{text-decoration:none;color:var(--muted);font-weight:500;font-size:.92rem;padding:6px 10px;border-radius:10px;white-space:nowrap}
.top nav a:hover{color:var(--text);background:var(--brand-soft)}
@media(max-width:420px){.hide-sm{display:none}}
/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;font-weight:600;text-decoration:none;padding:11px 20px;border-radius:12px;border:1px solid transparent;transition:transform .2s,box-shadow .2s,background .2s}
.btn.primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 8px 20px -8px rgba(29,78,216,.6)}
.btn.primary:hover{transform:translateY(-2px);box-shadow:0 12px 26px -8px rgba(29,78,216,.75)}
.btn.outline{border-color:var(--line);color:var(--text);background:var(--surface)}
.btn.outline:hover{border-color:var(--brand);color:var(--brand)}
.btn.ghost{background:var(--brand-soft);color:var(--muted);cursor:not-allowed}
.btn:focus-visible,a:focus-visible{outline:3px solid var(--brand2);outline-offset:2px}
/* hero */
.hero{position:relative;padding:56px 0 72px;overflow:hidden;isolation:isolate}
.hero::before{content:"";position:absolute;inset:-20% -10% 0;z-index:-1;background:radial-gradient(40% 50% at 15% 20%,rgba(29,78,216,.28),transparent 70%),radial-gradient(35% 45% at 85% 30%,rgba(14,165,233,.3),transparent 70%),radial-gradient(40% 40% at 60% 90%,rgba(139,92,246,.18),transparent 70%);filter:blur(10px)}
.hero-in{display:grid;gap:40px;align-items:center}
@media(min-width:900px){.hero-in{grid-template-columns:1.05fr 1fr}.hero{padding:96px 0 110px}}
h1{font-size:clamp(2.1rem,7vw,3.6rem);font-weight:800;margin:0 0 16px}
.grad{background:linear-gradient(120deg,var(--brand),var(--brand2));-webkit-background-clip:text;background-clip:text;color:transparent}
.sub{font-size:1.08rem;color:var(--muted);max-width:34em;margin:0 0 28px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px}
.hero-art{position:relative;height:280px;max-width:560px;width:100%;margin:0 auto}
@media(min-width:600px){.hero-art{height:380px}}
.browser,.phone{position:absolute;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow),0 30px 60px -30px rgba(29,78,216,.5);overflow:hidden}
.browser{border-radius:14px;width:78%;left:2%;top:6%;transform:rotate(-4deg)}
.browser.small{width:58%;left:auto;right:2%;top:auto;bottom:2%;transform:rotate(3deg)}
.bar{display:flex;gap:5px;padding:8px 10px;border-bottom:1px solid var(--line)}
.bar i{width:8px;height:8px;border-radius:50%;background:var(--line)}
.browser img{aspect-ratio:16/10;object-fit:cover;width:100%}
.phone{width:30%;right:6%;top:0;border-radius:24px;padding:6px;transform:rotate(6deg);z-index:2}
.phone img{border-radius:18px;aspect-ratio:9/17;object-fit:cover;width:100%}
/* skills */
.skills{padding:8px 0 40px}
.skills-head{text-align:center;color:var(--muted);margin:0 0 18px}
.num{font-size:1.6rem;color:var(--brand);font-weight:800}
.chips{list-style:none;padding:0;margin:0;display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(min(100%,190px),1fr))}
.chips li{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:14px 16px}
.chips b{display:block}
.chips span{color:var(--muted);font-size:.88rem}
/* bento */
.sec-head{margin-bottom:28px}
.bento{display:grid;gap:18px;grid-template-columns:1fr}
@media(min-width:700px){.bento{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1000px){.bento{grid-template-columns:repeat(4,1fr)}.card{grid-column:span 1}.card.big{grid-column:span 2}.card:nth-child(3){grid-column:span 2}.card:nth-child(6),.card:nth-child(7){grid-column:span 2}}
.card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow),0 24px 48px -24px rgba(29,78,216,.45)}
.media{aspect-ratio:16/10;overflow:hidden;background:var(--brand-soft)}
.media img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.card:hover .media img{transform:scale(1.04)}
.media.cover{display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff;background:radial-gradient(60% 80% at 20% 20%,#38bdf8,transparent),linear-gradient(135deg,#1d4ed8,#7c3aed)}
.media.cover span{font:800 clamp(2.4rem,7vw,3.4rem)/1.3 Prompt,sans-serif}
.media.cover small{opacity:.9}
.body{padding:18px 20px 22px;display:flex;flex-direction:column;flex:1}
.body .btn{margin-top:auto;align-self:flex-start}
.body .note{margin-bottom:14px}
dl{margin:0 0 14px;font-size:.93rem}
dt{font-weight:600;font-size:.8rem;color:var(--brand)}
dd{margin:0 0 8px;color:var(--muted)}
.meta{display:flex;flex-wrap:wrap;gap:6px}
.tag{font-size:.75rem;font-weight:600;padding:3px 10px;border-radius:999px;background:var(--ok-bg);color:var(--ok)}
.tag.soon{background:var(--warn-bg);color:var(--warn)}
.tech{font-size:.75rem;padding:3px 9px;border-radius:999px;border:1px solid var(--line);color:var(--muted)}
/* timeline */
.alt{background:linear-gradient(180deg,transparent,var(--brand-soft) 30%,transparent)}
.timeline{list-style:none;padding:0;margin:0;display:grid;gap:22px}
.timeline li{display:flex;gap:16px;position:relative}
.timeline li:not(:last-child)::after{content:"";position:absolute;left:19px;top:44px;bottom:-22px;width:2px;background:linear-gradient(var(--brand),transparent)}
.dot{flex:none;width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font:700 1rem Prompt,sans-serif;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand2))}
.timeline p{margin:2px 0 0;color:var(--muted)}
@media(min-width:800px){.timeline{grid-template-columns:repeat(3,1fr)}.timeline li{flex-direction:column}.timeline li:not(:last-child)::after{left:52px;right:-10px;top:19px;bottom:auto;width:auto;height:2px;background:linear-gradient(90deg,var(--brand),transparent)}}
.cta-box{margin-top:32px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--shadow)}
.cta-box p{margin:0 0 14px}
.placeholder{border:2px dashed var(--brand);color:var(--brand);border-radius:14px;padding:14px;text-align:center;font-weight:600}
.box{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:28px 22px;box-shadow:var(--shadow)}
.box .btn{margin-top:16px}
#support .btn{margin-top:18px}
/* footer */
footer{border-top:1px solid var(--line);padding:28px 0;color:var(--muted);font-size:.88rem}
/* privacy */
.doc{max-width:760px}
.doc ul{padding-left:20px}
.doc li{margin:0 0 12px}
/* reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.reveal{opacity:1;transform:none;transition:none}.card,.btn,.media img{transition:none}.card:hover,.btn:hover,.card:hover .media img{transform:none}}
/* Thai line breaking: keep phrases together, balance headings, avoid orphans */
.nb{display:inline-block}
h1,h2,h3{text-wrap:balance}
p,dd,li,.lead,.sub{text-wrap:pretty;line-break:strict}
.box.split{display:grid;gap:22px;align-items:center}
.box-img{border-radius:14px;border:1px solid var(--line);aspect-ratio:16/10;object-fit:cover;width:100%}
@media(min-width:800px){.box.split{grid-template-columns:1fr 1.1fr}}
/* hero art v2: one straight browser + phone overlap, floating badges */
.hero-art{height:auto;aspect-ratio:5/4;max-width:580px}
.hero-art .browser{width:86%;left:0;top:8%;transform:none;border-radius:16px}
.hero-art .browser.small{display:none}
.hero-art .bar{align-items:center;background:var(--bg)}
.hero-art .bar span{margin-left:10px;flex:1;font-size:.68rem;color:var(--muted);background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:1px 8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hero-art .phone{width:31%;right:0;left:auto;top:auto;bottom:0;transform:none;border-radius:28px;padding:7px;background:#0f172a;border:0}
.hero-art .phone img{border-radius:22px;aspect-ratio:9/17}
.float{position:absolute;z-index:3;display:flex;align-items:center;gap:8px;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:8px 12px;font-size:.82rem;font-weight:600;box-shadow:var(--shadow);white-space:nowrap}
.float b{font:800 1.2rem Prompt,sans-serif;color:var(--brand)}
.float i{width:8px;height:8px;border-radius:50%;background:#10b981;box-shadow:0 0 0 4px rgba(16,185,129,.2)}
.f1{left:4%;bottom:6%}
.f2{right:4%;top:0}
@media(max-width:420px){.float{font-size:.72rem;padding:6px 10px}.float b{font-size:1rem}}
.hero-art img{height:auto}
.hero-art .browser img{aspect-ratio:16/10;object-position:left top}