@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/pretendardvariable-dynamic-subset.min.css");

:root{
  --bg:#f6f7f9; --surface:#ffffff; --surface-2:#eef1f5; --ink:#0f1722; --ink-2:#3a4656; --muted:#5d6979; --line:#e2e6ec;
  --brand:#1857c9; --brand-ink:#0d3a8c; --brand-soft:#e7effc; --ice:#7cc4ff;
  --night:#0b1622; --night-2:#132232; --night-line:#22364a; --night-text:#eef3f8; --night-muted:#9fb2c4;
  --ok:#0f7a55; --warn:#b4620a; --warn-soft:#fff3e2;
  --r-s:6px; --r-m:10px; --r-l:14px; --r-full:999px;
  --sh-1:0 1px 2px rgba(15,23,34,.06),0 4px 12px -6px rgba(15,23,34,.10);
  --sh-2:0 1px 2px rgba(15,23,34,.06),0 16px 40px -20px rgba(15,23,34,.28);
  --ease:cubic-bezier(.2,.8,.2,1);
  --grain:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0c131c; --surface:#131c27; --surface-2:#1a2532; --ink:#ecf1f6; --ink-2:#c6d0db; --muted:#93a1b1; --line:#243242;
  --brand:#5b9bff; --brand-ink:#a9c8ff; --brand-soft:#16294a; --warn-soft:#2b2214; --warn:#f0b066;
  --sh-1:0 1px 2px rgba(0,0,0,.4); --sh-2:0 1px 2px rgba(0,0,0,.4),0 16px 40px -20px rgba(0,0,0,.7);
}}
:root[data-theme="dark"]{
  --bg:#0c131c; --surface:#131c27; --surface-2:#1a2532; --ink:#ecf1f6; --ink-2:#c6d0db; --muted:#93a1b1; --line:#243242;
  --brand:#5b9bff; --brand-ink:#a9c8ff; --brand-soft:#16294a; --warn-soft:#2b2214; --warn:#f0b066;
  --sh-1:0 1px 2px rgba(0,0,0,.4); --sh-2:0 1px 2px rgba(0,0,0,.4),0 16px 40px -20px rgba(0,0,0,.7);
}

*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:"Pretendard Variable",Pretendard,sans-serif;background:var(--bg);color:var(--ink);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased;word-break:keep-all;overflow-wrap:anywhere}
img,video{display:block;max-width:100%}
a{color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* type */
.eyebrow{font-size:14px;font-weight:700;color:var(--brand);letter-spacing:.01em}
.h1{font-size:56px;line-height:1.16;font-weight:800;letter-spacing:-0.035em}
.h2{font-size:40px;line-height:1.2;font-weight:800;letter-spacing:-0.03em}
.h3{font-size:24px;line-height:1.3;font-weight:700;letter-spacing:-0.02em}
.h4{font-size:20px;line-height:1.4;font-weight:700;letter-spacing:-0.01em}
.lede{font-size:20px;line-height:1.7;color:var(--muted);max-width:32em}
.body{color:var(--ink-2);max-width:36em}
.small{font-size:14px;line-height:1.6;color:var(--muted)}
.xs{font-size:12px;line-height:1.5;color:var(--muted)}
.accent{color:var(--brand)}
.num{font-variant-numeric:tabular-nums}

/* header */
.top{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--surface) 88%,transparent);backdrop-filter:saturate(1.4) blur(12px);box-shadow:0 1px 0 var(--line)}
.top .wrap{height:72px;display:flex;align-items:center;gap:32px}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:800;font-size:20px;letter-spacing:-0.01em;flex:none}
.logo img{width:36px;height:36px;border-radius:8px;background:#fff}
.logo small{display:block;font-size:12px;font-weight:600;color:var(--muted);letter-spacing:0;line-height:1.2}
.nav{display:flex;gap:4px;margin-left:auto}
.nav a{text-decoration:none;font-size:14px;font-weight:600;color:var(--ink-2);padding:8px 12px;border-radius:var(--r-s);transition:background .15s ease-out,color .15s ease-out}
.nav a:hover{background:var(--surface-2)}
.nav a[aria-current=page]{color:var(--brand);background:var(--brand-soft)}
.top-cta{display:flex;gap:8px;flex:none}
.menu-btn{display:none;margin-left:auto;width:44px;height:44px;border:0;background:transparent;color:var(--ink);border-radius:var(--r-m);cursor:pointer}
.menu-btn svg{width:24px;height:24px;margin:auto}
.drawer{display:none}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 20px;border-radius:var(--r-m);font-size:16px;font-weight:700;text-decoration:none;border:0;cursor:pointer;font-family:inherit;transition:transform .2s var(--ease),background .15s ease-out,box-shadow .2s ease-out;white-space:nowrap}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn svg{width:20px;height:20px;flex:none}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-lg{height:56px;padding:0 24px}
.btn-pri{background:var(--brand);color:#fff;box-shadow:0 1px 0 rgba(255,255,255,.25) inset,0 8px 20px -10px color-mix(in srgb,var(--brand) 80%,transparent)}
.btn-pri:hover{background:color-mix(in srgb,var(--brand) 88%,#000)}
.btn-ghost{background:var(--surface-2);color:var(--ink);box-shadow:0 0 0 1px color-mix(in srgb,var(--brand) 32%,var(--line)) inset}
.btn-ghost:hover{background:color-mix(in srgb,var(--brand) 12%,var(--surface))}
.btn-ice{background:var(--ice);color:#06121e}
.btn-night{background:rgba(255,255,255,.18);color:var(--night-text);box-shadow:0 0 0 1px rgba(255,255,255,.42) inset}
.btn-night:hover{background:rgba(255,255,255,.26)}

/* sections */
.sec{padding:96px 0}
.sec-sm{padding:64px 0}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;margin-bottom:48px}
.sec-head .lede{margin-top:12px;font-size:18px}
.night{background:var(--night);color:var(--night-text);position:relative;isolation:isolate}
.night::after{content:"";position:absolute;inset:0;z-index:-1;opacity:.06;background-image:var(--grain);pointer-events:none}
.night .lede,.night .body,.night .small{color:var(--night-muted)}
.night .eyebrow{color:var(--ice)}
.surface{background:var(--surface)}
.card{background:var(--surface);border-radius:var(--r-l);box-shadow:var(--sh-1)}
.pad{padding:32px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.grid-2>*,.grid-3>*,.grid-4>*{min-width:0}
.chip{display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 12px;border-radius:var(--r-full);background:var(--brand-soft);color:var(--brand-ink);font-size:14px;font-weight:700}
.chip .dot{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px color-mix(in srgb,var(--ok) 25%,transparent)}
.tag{display:inline-flex;align-items:center;flex:none;white-space:nowrap;height:24px;padding:0 8px;border-radius:var(--r-s);background:var(--surface-2);color:var(--ink-2);font-size:12px;font-weight:700}
.tbd{display:inline-flex;align-items:center;gap:4px;padding:0 6px;border-radius:4px;background:var(--warn-soft);color:var(--warn);font-size:12px;font-weight:700;line-height:20px;vertical-align:middle;white-space:nowrap}
.photo{border-radius:var(--r-l);overflow:hidden;background:var(--surface-2);position:relative}
.photo img,.photo video{width:100%;height:100%;object-fit:cover}
.cap{position:absolute;left:12px;bottom:12px;right:12px;padding:8px 12px;border-radius:var(--r-m);background:rgba(10,14,20,.66);backdrop-filter:blur(6px);color:#fff;font-size:14px;line-height:1.5;font-weight:600}
.cap small{display:block;font-size:12px;font-weight:500;opacity:.8}
.checks{list-style:none;padding:0;display:grid;gap:12px}
.checks li{display:flex;gap:12px;align-items:flex-start}
.checks svg{width:24px;height:24px;flex:none;color:var(--brand);margin-top:1px}
.night .checks svg{color:var(--ice)}

/* hero */
.hero{padding:64px 0 96px}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:64px;align-items:center}
.hero .cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:40px}
.vid-card{position:relative;border-radius:20px;overflow:hidden;aspect-ratio:1/1;box-shadow:var(--sh-2);background:#111}
.vid-card video{width:100%;height:100%;object-fit:cover}
.vid-card .badge{position:absolute;top:16px;left:16px;display:flex;gap:8px;align-items:center;height:32px;padding:0 12px;border-radius:var(--r-full);background:rgba(10,14,20,.6);backdrop-filter:blur(6px);color:#fff;font-size:12px;font-weight:700}
.vid-card .badge i{width:8px;height:8px;border-radius:50%;background:#ff5a5a;animation:pulse 1.6s var(--ease) infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(255,90,90,.6)}70%{box-shadow:0 0 0 8px rgba(255,90,90,0)}100%{box-shadow:0 0 0 0 rgba(255,90,90,0)}}

/* trust strip */
.trust{display:grid;grid-template-columns:repeat(4,1fr)}
.trust>div{padding:24px 24px 24px 0;border-right:1px solid var(--line);margin-right:24px}
.trust>div:last-child{border-right:0}
.trust b{display:block;font-size:24px;font-weight:800;letter-spacing:-0.02em;line-height:1.3}
.trust span{font-size:14px;color:var(--muted)}

/* before/after */
.ba{position:relative;border-radius:var(--r-l);overflow:hidden;aspect-ratio:16/10;user-select:none;touch-action:pan-y;background:#111;box-shadow:var(--sh-2);--pos:50%}
.ba img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;pointer-events:none}
.ba .after{clip-path:inset(0 0 0 var(--pos))}
.ba .handle{position:absolute;top:0;bottom:0;left:var(--pos);width:2px;background:#fff;transform:translateX(-1px);box-shadow:0 0 0 1px rgba(0,0,0,.15)}
.ba .knob{position:absolute;top:50%;left:50%;width:48px;height:48px;border-radius:50%;transform:translate(-50%,-50%);background:#fff;color:#0f1722;display:grid;place-items:center;box-shadow:0 2px 6px rgba(0,0,0,.25),0 12px 24px -8px rgba(0,0,0,.4);cursor:ew-resize}
.ba .knob svg{width:24px;height:24px}
.ba .lbl{position:absolute;bottom:16px;height:32px;padding:0 12px;border-radius:var(--r-s);display:flex;align-items:center;font-size:14px;font-weight:700;color:#fff;pointer-events:none}
.ba .lbl.b{left:16px;background:rgba(15,15,15,.72)}
.ba .lbl.a{right:16px;background:color-mix(in srgb,#1857c9 88%,transparent)}
.ba input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:ew-resize;margin:0}
.ba-tabs{display:flex;gap:8px;margin-top:16px;flex-wrap:wrap}
.ba-tabs button{display:flex;align-items:center;gap:8px;height:40px;padding:0 12px 0 4px;border:0;border-radius:var(--r-m);background:var(--surface);box-shadow:0 0 0 1px var(--line) inset;font:inherit;font-size:14px;font-weight:600;color:var(--ink-2);cursor:pointer;transition:box-shadow .15s ease-out}
.ba-tabs button img{width:32px;height:32px;border-radius:6px;object-fit:cover}
.ba-tabs button[aria-pressed=true]{box-shadow:0 0 0 2px var(--brand) inset;color:var(--ink)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;counter-reset:st}
.step{position:relative}
.step .photo{aspect-ratio:4/5;margin-bottom:16px}
.step b{font-size:12px;font-weight:800;color:var(--brand)}
.step h4{margin-top:4px;font-size:16px;font-weight:700;line-height:1.4}
.step p{margin-top:4px;font-size:14px;line-height:1.6;color:var(--muted)}

/* compare table */
.cmp{width:100%;border-collapse:separate;border-spacing:0;font-size:16px}
.cmp th,.cmp td{padding:16px;text-align:left;vertical-align:top;border-top:1px solid var(--line)}
.cmp thead th{border-top:0;font-size:14px;color:var(--muted);font-weight:700}
.cmp tbody th{font-size:14px;color:var(--muted);font-weight:600;width:20%}
.cmp td.hl{background:var(--brand-soft)}
.cmp thead th.hl{background:var(--brand-soft);color:var(--brand-ink);border-radius:var(--r-m) var(--r-m) 0 0}

/* calc */
.calc{display:grid;grid-template-columns:1fr 1fr;gap:0;border-radius:20px;overflow:hidden;box-shadow:var(--sh-2);background:var(--surface)}
.calc .in{padding:40px}
.field{margin-top:24px}
.field label{display:block;font-size:14px;font-weight:700;margin-bottom:8px}
.inp{display:flex;align-items:center;gap:8px;height:52px;padding:0 16px;border-radius:var(--r-m);background:var(--surface-2);box-shadow:0 0 0 1px transparent inset;transition:box-shadow .15s ease-out}
.inp:focus-within{box-shadow:0 0 0 2px var(--brand) inset}
.inp input,.inp select{flex:1;min-width:0;height:100%;border:0;background:transparent;font:inherit;font-size:18px;font-weight:700;color:var(--ink);outline:0}
.inp span{font-size:14px;font-weight:600;color:var(--muted)}
.range{width:100%;margin-top:12px;accent-color:var(--brand)}
.calc .out{padding:40px;background:linear-gradient(160deg,#0d3a8c,#1857c9);color:#fff;display:flex;flex-direction:column;justify-content:space-between;position:relative;isolation:isolate}
.calc .out::after{content:"";position:absolute;inset:0;z-index:-1;opacity:.08;background-image:var(--grain)}
.calc .big{font-size:56px;font-weight:800;letter-spacing:-0.035em;line-height:1.1;margin-top:8px}
.calc .big small{font-size:24px;margin-left:4px}
.calc dl{margin-top:24px;display:grid;grid-template-columns:1fr auto;gap:8px 16px;font-size:14px}
.calc dt{opacity:.75}
.calc dd{margin:0;font-weight:700;text-align:right}
.calc .out .btn{background:#fff;color:#0d3a8c;width:100%;margin-top:32px}
.door-calculator{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(280px,.75fr);overflow:hidden;border-radius:8px;background:var(--surface);box-shadow:var(--sh-2)}
.door-calc-input,.door-calc-output{min-width:0;padding:32px}
.door-calc-input>.small{margin-top:8px;color:var(--muted)}
.customer-picker{border:0;padding:0;margin:24px 0 0}
.customer-picker legend{font-size:14px;font-weight:700;margin-bottom:8px}
.customer-options{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:4px;padding:4px;border-radius:8px;background:var(--surface-2)}
.customer-options label{position:relative;cursor:pointer;min-width:0}
.customer-options input{position:absolute;opacity:0;inset:0}
.customer-options span{display:grid;place-items:center;min-height:40px;padding:4px;text-align:center;font-size:13px;font-weight:700;border-radius:6px}
.customer-options input:checked+span{background:var(--surface);color:var(--brand);box-shadow:var(--sh-1)}
.customer-options input:focus-visible+span{outline:2px solid var(--brand);outline-offset:1px}
.measure-rows{display:grid;gap:12px;margin-top:20px}
.measure-row{padding:16px;border:1px solid var(--line);border-radius:8px}
.measure-row-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.measure-row-head strong{font-size:14px}
.remove-door{border:0;background:none;color:var(--muted);cursor:pointer;font:inherit;font-size:13px;text-decoration:underline}
.remove-door[hidden]{display:none}
.measure-fields{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:12px}
.measure-fields label{min-width:0;font-size:13px;font-weight:700}
.measure-fields label span{color:var(--muted);font-weight:400}
.measure-fields input{display:block;width:100%;height:44px;min-width:0;margin-top:6px;padding:0 10px;border:1px solid var(--line);border-radius:6px;background:var(--surface-2);color:var(--ink);font:inherit;font-size:16px}
.measure-fields input:focus{outline:2px solid var(--brand);outline-offset:1px}
.measure-subtotal{margin-top:10px;color:var(--muted);text-align:right}
.add-door{margin-top:16px}
.add-door svg{width:18px;height:18px}
.calc-hint{margin-top:16px;color:var(--muted)}
.door-calc-output{background:var(--night);color:var(--night-text);display:flex;flex-direction:column;justify-content:space-between;gap:24px}
.door-calc-output .big{font-size:clamp(28px,3vw,44px);font-weight:800;margin-top:8px;overflow-wrap:anywhere}
.door-calc-output dl{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;margin-top:20px;font-size:14px}
.door-calc-output dt{opacity:.8}
.door-calc-output dd{margin:0;text-align:right;font-weight:700}
.calc-risk,.calc-incomplete{line-height:1.6;color:rgba(255,255,255,.8)}
.calc-incomplete{margin-top:12px}
.calc-link{width:100%;margin-top:20px;background:var(--surface);color:var(--ink)}
.measure-guide{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;align-items:center}
.measure-guide img{display:block;width:100%;height:auto;border:1px solid var(--line);border-radius:8px;background:#eef4f7}
@media (max-width:760px){.door-calculator,.measure-guide{grid-template-columns:1fr}.door-calc-input,.door-calc-output{padding:24px}.customer-options{grid-template-columns:repeat(2,minmax(0,1fr))}.measure-guide{gap:24px}}

/* faq */
.faq details{border-top:1px solid var(--line);padding:4px 0}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:16px;padding:20px 0;font-size:18px;font-weight:700}
.faq summary::-webkit-details-marker{display:none}
.faq summary svg{width:24px;height:24px;flex:none;transition:transform .2s var(--ease);color:var(--muted)}
.faq details[open] summary svg{transform:rotate(45deg)}
.faq details p{padding:0 0 24px;color:var(--ink-2);max-width:44em}

/* cta band */
.cta-band{border-radius:20px;padding:56px;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;background:var(--night);color:var(--night-text);position:relative;overflow:hidden;isolation:isolate}
.cta-band::before{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(600px 300px at 90% 0%,rgba(124,196,255,.22),transparent 60%),radial-gradient(400px 240px at 85% 10%,rgba(124,196,255,.14),transparent 70%)}
.cta-band::after{content:"";position:absolute;inset:0;z-index:-1;opacity:.07;background-image:var(--grain)}
.cta-band .lede{color:var(--night-muted);font-size:18px;margin-top:12px}
.cta-band .acts{display:flex;flex-direction:column;gap:12px;min-width:280px}

/* footer */
.foot{padding:64px 0;background:var(--surface);box-shadow:0 -1px 0 var(--line);margin-top:96px}
.foot .wrap{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px}
.foot h5{font-size:14px;font-weight:700;margin-bottom:12px}
.foot p,.foot li{font-size:14px;line-height:1.8;color:var(--muted)}
.foot ul{list-style:none;padding:0}
.foot a{text-decoration:none}

/* page head */
.ph{padding:64px 0 48px}
.crumb{font-size:14px;color:var(--muted);margin-bottom:16px}
.crumb a{text-decoration:none}

/* mobile bar */
.mbar{display:none}

@media (max-width:1024px){
  .nav,.top-cta{display:none}
  .menu-btn{display:grid}
  .drawer[data-open=true]{display:block;position:fixed;inset:72px 0 0;z-index:49;background:var(--surface);padding:16px 24px 120px;overflow:auto}
  .drawer a{display:block;padding:16px 0;font-size:20px;font-weight:700;text-decoration:none;border-bottom:1px solid var(--line)}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .steps{grid-template-columns:repeat(3,1fr);row-gap:32px}
  .grid-4{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  .wrap{padding:0 16px}
  .h1{font-size:36px}
  .h2{font-size:28px}
  .h3{font-size:20px}
  .lede{font-size:16px}
  .sec{padding:64px 0}
  .sec-sm{padding:48px 0}
  .sec-head{flex-direction:column;align-items:flex-start;margin-bottom:32px}
  .hero{padding:32px 0 64px}
  .hero .cta .btn{flex:1 1 100%}
  .grid-2,.grid-3,.calc{grid-template-columns:1fr}
  .trust{grid-template-columns:1fr 1fr}
  .trust>div{border-right:0;margin-right:0;padding:16px 0;border-top:1px solid var(--line)}
  .steps{grid-template-columns:1fr 1fr}
  .calc .in,.calc .out{padding:24px}
  .calc .big{font-size:40px}
  .cta-band{grid-template-columns:1fr;padding:32px 24px}
  .cta-band .acts{min-width:0}
  .foot .wrap{grid-template-columns:1fr;gap:32px}
  .cmp{font-size:14px}
  .cmp th,.cmp td{padding:12px 8px}
  .pad{padding:24px}
  .ba{aspect-ratio:4/3}
  .foot{padding-bottom:120px}
  .mbar{display:grid;grid-template-columns:1fr 1fr 1.3fr;gap:8px;position:fixed;left:0;right:0;bottom:0;z-index:60;padding:8px 12px calc(8px + env(safe-area-inset-bottom));background:color-mix(in srgb,var(--surface) 92%,transparent);backdrop-filter:blur(12px);box-shadow:0 -1px 0 var(--line)}
  .mbar a{height:48px;font-size:14px}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}