:root{--cyan:#08B9DE;--blue:#278BE8;--purple:#7138C5;--navy:#142852;--bg:#0a1226;--bg2:#0f1b38;--paper:#f5f6fa;--ink:#142852;--muted:#a9b4cf;--line:rgba(255,255,255,.12);--grad:linear-gradient(120deg,#08B9DE 0%,#278BE8 48%,#7138C5 100%);--r:28px}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--bg);color:#e9edf7;font-family:"Pretendard Variable",Pretendard,-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Noto Sans KR","Malgun Gothic",sans-serif;font-size:17px;line-height:1.7;word-break:keep-all;overflow-wrap:break-word}
img,video,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px;top:8px;background:#fff;color:#000;padding:8px 14px;border-radius:8px;z-index:100}.skip:focus{left:8px}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}

/* header */
.hd{position:sticky;top:0;z-index:50;background:rgba(10,18,38,.78);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid transparent}
.hd .in{display:flex;align-items:center;justify-content:space-between;height:72px;gap:16px}
.hd .logo img{height:30px;width:auto}
.nav{display:flex;gap:34px;font-size:15px;color:var(--muted)}
.nav a{padding:6px 2px;transition:color .2s}.nav a:hover,.nav a[aria-current]{color:#fff}
.hd .cta{display:flex;align-items:center;gap:10px}
.menu-btn{display:none;background:none;border:1px solid var(--line);color:#fff;width:44px;height:44px;border-radius:50%;cursor:pointer;font-size:0}
.menu-btn span,.menu-btn span::before,.menu-btn span::after{display:block;width:18px;height:2px;background:#fff;position:relative;margin:auto;content:"";transition:.2s}
.menu-btn span::before{position:absolute;top:-6px;left:0}.menu-btn span::after{position:absolute;top:6px;left:0}
.menu-btn[aria-expanded=true] span{background:transparent}.menu-btn[aria-expanded=true] span::before{top:0;transform:rotate(45deg)}.menu-btn[aria-expanded=true] span::after{top:0;transform:rotate(-45deg)}

/* buttons */
.btn{background:transparent;color:inherit;display:inline-flex;align-items:center;gap:12px;border-radius:999px;font-weight:600;font-size:15px;line-height:1;padding:14px 14px 14px 24px;border:1px solid transparent;cursor:pointer;font-family:inherit;transition:transform .2s,box-shadow .2s,background .2s}
.btn .ar{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:var(--navy);color:#fff;flex:none}
.btn .ar svg{width:14px;height:14px}
.btn:hover{transform:translateY(-1px)}
.btn-grad{background:var(--grad);color:#fff;box-shadow:0 10px 30px -10px rgba(39,139,232,.7)}.btn-grad .ar{background:rgba(255,255,255,.22)}
.btn-paper{background:var(--paper);color:var(--navy)}
.btn-line{border-color:rgba(255,255,255,.28);color:#fff}.btn-line .ar{background:rgba(255,255,255,.14)}
.btn-sm{padding:9px 9px 9px 18px;font-size:14px;gap:10px}.btn-sm .ar{width:24px;height:24px}.btn-sm .ar svg{width:11px;height:11px}
.btn-dark{background:var(--navy);color:#fff}.btn-dark .ar{background:#fff;color:var(--navy)}

/* hero */
.hero{padding:56px 0 24px}
.eyebrow{display:inline-block;font-size:14px;letter-spacing:.02em;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-weight:600;margin-bottom:18px}
h1,h2,h3{text-wrap:balance;font-weight:600;letter-spacing:-.025em;line-height:1.2;color:#fff}
h1{font-size:clamp(36px,6.2vw,76px);max-width:15em}
.hero .sub{margin-top:24px;max-width:36em;color:var(--muted);font-size:clamp(17px,1.6vw,20px)}
.hero .acts{margin-top:34px;display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.hero .note{margin-top:14px;font-size:14px;color:var(--muted)}
.vid{margin-top:48px;position:relative;border-radius:var(--r);overflow:hidden;background:var(--paper);aspect-ratio:16/9;box-shadow:0 40px 80px -40px rgba(8,185,222,.35)}
.vid video{width:100%;height:100%;object-fit:cover}
.vid button{position:absolute;right:16px;bottom:16px;width:44px;height:44px;border-radius:50%;border:0;background:rgba(20,40,82,.85);color:#fff;cursor:pointer;display:grid;place-items:center}
.vid button svg{width:16px;height:16px}

/* sections */
section{padding:112px 0}
.sec-head{display:grid;grid-template-columns:1fr 1.15fr;gap:48px;align-items:start;margin-bottom:56px}
.sec-head h2{font-size:clamp(30px,4.6vw,56px)}
.sec-head p{font-size:clamp(18px,2.1vw,26px);line-height:1.55;color:var(--muted);font-weight:400}
.label{font-size:14px;color:var(--muted);margin-bottom:14px;display:block}
.cards{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:16px}
.card{border-radius:22px;padding:28px;min-height:300px;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}
.card h3{font-size:clamp(22px,2.2vw,28px);font-weight:500;line-height:1.3}
.card p{font-size:15px;line-height:1.6}
.card .tag{font-size:13px;font-weight:600;letter-spacing:.02em;margin-bottom:14px}
.card-paper{background:var(--paper);color:var(--ink)}.card-paper h3{color:var(--ink)}.card-paper p{color:#4a5878}.card-paper .tag{color:var(--blue)}
.card-grad{background:var(--grad);color:#fff}.card-grad h3,.card-grad p{color:#fff}.card-grad p{opacity:.92}
.card-grad svg.art{position:absolute;right:-30px;bottom:-30px;width:70%;opacity:.55;pointer-events:none}
.card-navy{background:var(--navy);border:1px solid var(--line)}.card-navy p{color:var(--muted)}.card-navy .tag{color:var(--cyan)}
.oneline{margin-top:28px;color:var(--muted);font-size:16px;text-align:center}
.oneline b{color:#fff;font-weight:600}

/* problem band */
.problem{background:var(--bg2);border-radius:var(--r);padding:clamp(32px,6vw,72px);display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.problem h2{font-size:clamp(28px,4vw,48px)}.problem p{font-size:clamp(17px,1.8vw,21px);color:var(--muted);line-height:1.7}.problem p em{font-style:normal;color:#fff}

/* services (home) */
.svc{display:grid;grid-template-columns:1fr 1.1fr;gap:16px;align-items:stretch}
.svc-list{display:flex;flex-direction:column;gap:0;border-top:1px solid var(--line)}
.svc-list a{display:flex;justify-content:space-between;gap:20px;align-items:center;padding:26px 4px;border-bottom:1px solid var(--line);transition:padding .2s}
.svc-list a:hover{padding-left:14px}
.svc-list h3{font-size:clamp(22px,2.4vw,30px);font-weight:500}.svc-list p{color:var(--muted);font-size:16px;margin-top:6px}
.svc-list .go{flex:none;width:40px;height:40px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center}.svc-list .go svg{width:14px;height:14px}
.svc-art{border-radius:var(--r);background:var(--grad);min-height:380px;position:relative;overflow:hidden;color:#fff;padding:36px;display:flex;flex-direction:column;justify-content:flex-end}
.svc-art svg.art{position:absolute;inset:-10% -10% auto auto;width:100%;opacity:.5}
.svc-art h3{font-size:clamp(24px,3vw,38px);position:relative}.svc-art p{position:relative;margin-top:10px;opacity:.95;max-width:26em}

/* diag preview */
.diag{background:var(--paper);color:var(--ink);border-radius:var(--r);padding:clamp(32px,6vw,72px);display:grid;grid-template-columns:1fr 1.1fr;gap:48px}
.diag h2{color:var(--ink);font-size:clamp(28px,4vw,48px)}.diag .lead{margin-top:18px;color:#4a5878;font-size:17px}
.diag .btn{margin-top:30px}
.qs{list-style:none;counter-reset:q;display:grid;gap:12px}
.qs li{counter-increment:q;background:#fff;border-radius:16px;padding:18px 20px 18px 64px;position:relative;color:var(--ink);font-weight:500;line-height:1.55;box-shadow:0 1px 0 rgba(20,40,82,.06)}
.qs li::before{content:counter(q);position:absolute;left:18px;top:50%;transform:translateY(-50%);width:32px;height:32px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:700;font-size:15px}

/* about band */
.about-band{display:grid;grid-template-columns:1fr 1.15fr;gap:48px;align-items:center;border-top:1px solid var(--line);padding-top:72px}
.about-band h2{font-size:clamp(28px,4vw,48px)}.about-band p{color:var(--muted);font-size:clamp(17px,1.8vw,21px)}.about-band p b{color:#fff;font-weight:600}
.about-band .btn{margin-top:26px}

/* closing cta */
.closing{text-align:center}
.closing h2{font-size:clamp(30px,5vw,60px);max-width:14em;margin:0 auto}
.closing p{margin:22px auto 0;color:var(--muted);max-width:30em}
.closing .acts{margin-top:34px;display:flex;justify-content:center;gap:12px;flex-wrap:wrap}

/* inner pages */
.page-hero{padding:72px 0 24px}
.page-hero h1{font-size:clamp(34px,5.4vw,64px)}
.page-hero p{margin-top:22px;max-width:36em;color:var(--muted);font-size:clamp(17px,1.8vw,21px)}
.block{padding:72px 0;border-top:1px solid var(--line)}
.block:first-of-type{border-top:0}
.cols{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start}
.cols h2{font-size:clamp(28px,3.6vw,44px)}
.cols .kicker{display:block;color:var(--cyan);font-size:14px;font-weight:600;margin-bottom:12px}
.cols .intro{margin-top:18px;color:var(--muted)}
.stack{display:grid;gap:28px}
.stack h3{font-size:15px;color:var(--cyan);font-weight:600;margin-bottom:10px;letter-spacing:.02em}
.stack ul{list-style:none;display:grid;gap:8px}
.stack li{padding-left:18px;position:relative;color:#d6dcee}
.stack li::before{content:"";position:absolute;left:0;top:.8em;width:6px;height:6px;border-radius:50%;background:var(--grad)}
.stack ol{list-style:none;counter-reset:s;display:grid;gap:10px}
.stack ol li{counter-increment:s;padding-left:40px}
.stack ol li::before{content:counter(s);width:26px;height:26px;border-radius:50%;top:.2em;display:grid;place-items:center;font-size:13px;font-weight:700;color:#fff;background:var(--grad)}
.stack p{color:#d6dcee}
.note-box{background:var(--bg2);border:1px solid var(--line);border-radius:18px;padding:20px 22px;color:var(--muted);font-size:15.5px}
.note-box b{color:#fff}
table.t{width:100%;border-collapse:collapse;font-size:15.5px}
table.t th,table.t td{text-align:left;padding:14px 14px;border-bottom:1px solid var(--line);vertical-align:top}
table.t th{color:var(--cyan);font-weight:600;white-space:nowrap;font-size:14px}
table.t td:first-child{color:#fff;font-weight:600;white-space:nowrap}
.tscroll{overflow-x:auto}
.sub-card{background:var(--paper);color:var(--ink);border-radius:var(--r);padding:clamp(26px,4vw,44px);margin-top:36px}
.sub-card h3{color:var(--ink);font-size:clamp(22px,2.6vw,30px)}.sub-card p,.sub-card li{color:#3c4a6b}
.sub-card .tag{display:inline-block;font-size:12.5px;font-weight:700;color:var(--purple);background:#ece6f8;border-radius:999px;padding:4px 12px;margin-bottom:14px}
.sub-card ul{margin:14px 0 0 0;list-style:none;display:grid;gap:6px}.sub-card li{padding-left:18px;position:relative}
.sub-card li::before{content:"";position:absolute;left:0;top:.8em;width:6px;height:6px;border-radius:50%;background:var(--blue)}

/* diag page */
.promptbox{background:#fff;color:var(--ink);border-radius:20px;padding:22px;font-size:14.5px;line-height:1.7;white-space:pre-wrap;max-height:340px;overflow:auto;font-family:inherit;border:0;width:100%;resize:vertical}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}
.ok{color:var(--cyan);font-size:14px;margin-top:10px;min-height:1.4em}

/* form */
form.f{display:grid;gap:18px}
.fr{display:grid;grid-template-columns:1fr 1fr;gap:18px}
label.l{display:grid;gap:8px;font-size:14.5px;color:var(--muted);font-weight:500}
.f input,.f select,.f textarea{width:100%;background:var(--bg2);border:1px solid var(--line);border-radius:14px;color:#fff;padding:14px 16px;font:inherit;font-size:16px}
.f textarea{min-height:150px;resize:vertical}
.f select option{color:#000}
.f input:focus,.f select:focus,.f textarea:focus{outline:2px solid var(--blue);border-color:transparent}
.chk{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--muted)}
.chk input{width:20px;height:20px;margin-top:3px;accent-color:var(--blue);flex:none}
.chk a{color:#fff;text-decoration:underline}
.mailbox{margin-top:28px;background:var(--bg2);border:1px solid var(--line);border-radius:18px;padding:20px 22px;font-size:15.5px;color:var(--muted)}
.mailbox a{color:#fff;font-weight:600;text-decoration:underline}

/* prose */
.prose{max-width:760px}
.prose h2{font-size:22px;margin:44px 0 12px}
.prose p,.prose li{color:#cfd6ea;margin-top:10px}
.prose ul{padding-left:20px}
.prose a{text-decoration:underline}

/* info table (about) */
.info{display:grid;grid-template-columns:150px 1fr;border-top:1px solid var(--line)}
.info dt,.info dd{padding:16px 0;border-bottom:1px solid var(--line)}
.info dt{color:var(--muted);font-size:15px}.info dd{color:#fff}

/* footer */
.ft{padding:24px 0 24px}
.ft .card-f{background:var(--paper);color:var(--ink);border-radius:var(--r);padding:clamp(28px,4vw,48px)}
.ft .top{display:flex;justify-content:space-between;gap:28px;flex-wrap:wrap;align-items:flex-start;padding-bottom:32px;border-bottom:1px solid rgba(20,40,82,.14)}
.ft .top img{height:34px;width:auto}
.ft .top p{margin-top:14px;max-width:26em;color:#4a5878;font-size:15px;line-height:1.6}
.ft .cols4{display:grid;grid-template-columns:repeat(3,auto);gap:12px 64px;padding:32px 0}
.ft h4{font-size:13px;color:#6a7899;font-weight:600;margin-bottom:12px}
.ft li{list-style:none;margin:6px 0;font-size:15px}.ft li a:hover{text-decoration:underline}
.ft .legal{font-size:13.5px;color:#5b6a8c;line-height:1.8;border-top:1px solid rgba(20,40,82,.14);padding-top:22px}
.ft .legal span{display:inline-block;margin-right:14px}
.ft .legal a{text-decoration:underline}

@media (max-width:900px){
 section{padding:80px 0}
 .nav{display:none}.menu-btn{display:block}
 .hd .cta .btn{display:none}
 .nav.open{display:flex;position:absolute;left:0;right:0;top:72px;background:rgba(10,18,38,.98);flex-direction:column;gap:0;padding:8px 24px 24px;border-bottom:1px solid var(--line)}
 .nav.open a{padding:16px 0;font-size:18px;color:#fff;border-bottom:1px solid var(--line)}
 .sec-head,.cols,.problem,.svc,.diag,.about-band{grid-template-columns:1fr;gap:28px}
 .cards{grid-template-columns:1fr}
 .card{min-height:240px}
 .fr{grid-template-columns:1fr}
 .ft .cols4{grid-template-columns:repeat(2,auto)}
 .info{grid-template-columns:110px 1fr}
 .vid{margin-top:36px;border-radius:20px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

/* illustrations */
.ill{width:100%;height:auto;display:block}
.hero .eyebrow.top{font-size:clamp(17px,2vw,22px);margin-bottom:16px}
.vid{margin-top:0}
.hero-copy{margin-top:56px}
.hero-copy h1{max-width:16em}
.panel{border-radius:var(--r);background:linear-gradient(145deg,rgba(8,185,222,.14),rgba(113,56,197,.2));border:1px solid var(--line);padding:clamp(14px,3vw,28px)}
.panel.sm{margin-top:28px;max-width:380px;padding:14px}
.problem{grid-template-columns:1fr 1.05fr}
.problem .ill{max-width:560px;margin:auto}
.card{gap:14px;justify-content:flex-start}
.card .ill{max-width:300px;margin:-4px auto 6px}
.card p{margin-top:auto}
.card-grad .ill{filter:drop-shadow(0 8px 16px rgba(10,18,38,.25))}
.svc-art{min-height:480px;justify-content:flex-end}
.svc-art svg.ill{position:absolute;left:0;top:10px;width:100%}
.about-band{grid-template-columns:.9fr 1.1fr;gap:56px}
.about-band .panel{padding:12px}
.about-band .panel .ill{max-width:440px;margin:auto}
.ph{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}
.ph-art{max-width:460px;margin-left:auto;width:100%}
.ph-art .ill{filter:drop-shadow(0 20px 40px rgba(8,185,222,.15))}
.closing{background:radial-gradient(60% 90% at 50% 100%,rgba(39,139,232,.22),transparent)}
@media (max-width:900px){
 .ph{grid-template-columns:1fr;gap:28px}.ph-art{max-width:340px;margin:0}
 .problem{grid-template-columns:1fr}
 .about-band{grid-template-columns:1fr}
 .hero-copy{margin-top:40px}
 .svc-art{min-height:400px}
}

.problem h2{margin-bottom:20px}
.svc-art{min-height:600px}
@media (max-width:900px){.svc-art{min-height:520px}}
.stack ol.qs li{padding:18px 20px 18px 64px;color:var(--ink)}
.stack ol.qs li::before{content:counter(q);counter-increment:none;left:18px;top:50%;transform:translateY(-50%);width:32px;height:32px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:700;font-size:15px}
.stack ol.qs{counter-reset:q}
.stack ol.qs li{counter-increment:q}

.hero-copy{margin-top:40px}
.hero .eyebrow.top{margin-bottom:14px}
.ph-art.sm{max-width:260px}
@media (max-width:900px){.ph-art.sm{max-width:200px}}