:root{
  --brand:#0160FB; --brand-hover:#004FD6; --brand-active:#0042B3;
  --brand-50:#EEF4FF; --brand-100:#DCE8FF;
  --navy:#0B1B3F; --ink:#0B1B3F; --ink-2:#4B5563; --ink-3:#6B7280;
  --line:#E5E7EB; --bg:#FFFFFF; --bg-subtle:#F5F7FB;
  --ok:#067647; --ng:#B42318; --focus:#0160FB;
  --r-sm:8px; --r-md:12px; --r-lg:16px; --r-xl:24px; --r-full:999px;
  --sh-1:0 1px 2px rgba(11,27,63,.06),0 1px 3px rgba(11,27,63,.08);
  --sh-2:0 4px 12px rgba(11,27,63,.08);
  --sh-3:0 16px 40px rgba(1,96,251,.18);
  --gutter:20px; --maxw:1200px; --sec-y:64px;
  --fs-display:30px; --lh-display:40px; --fs-h2:24px; --lh-h2:32px;
  --fs-h3:18px; --lh-h3:26px; --fs-body:16px; --lh-body:26px;
  --fs-sm:14px; --lh-sm:22px; --fs-xs:12px; --lh-xs:18px;
}
@media (min-width:1024px){
  :root{ --gutter:32px; --sec-y:112px; --fs-display:48px; --lh-display:60px;
    --fs-h2:36px; --lh-h2:46px; --fs-h3:20px; --lh-h3:28px; --fs-body:17px; --lh-body:28px; }
}
*{box-sizing:border-box} html{scroll-behavior:smooth; scroll-padding-top:72px}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Pretendard Variable",Pretendard,-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Noto Sans KR",sans-serif;
  font-size:var(--fs-body);line-height:var(--lh-body);word-break:keep-all;-webkit-font-smoothing:antialiased}
h1,h2,h3,p{margin:0} a{color:inherit}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter)}
.sec{padding:var(--sec-y) 0} .sec--subtle{background:var(--bg-subtle)}
.sec--navy{background:var(--navy);color:#fff} .sec--brand{background:var(--brand);color:#fff}
.eyebrow{font-size:var(--fs-sm);line-height:var(--lh-sm);font-weight:600;color:var(--brand)}
h1{font-size:var(--fs-display);line-height:var(--lh-display);font-weight:800;letter-spacing:-0.02em}
h2{font-size:var(--fs-h2);line-height:var(--lh-h2);font-weight:700;letter-spacing:-0.015em}
h3{font-size:var(--fs-h3);line-height:var(--lh-h3);font-weight:700}
.lead{color:var(--ink-2)} .muted{color:var(--ink-3);font-size:var(--fs-sm);line-height:var(--lh-sm)}
.stack>*+*{margin-top:12px}
/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:52px;padding:0 24px;border-radius:var(--r-md);
  font:inherit;font-size:16px;font-weight:700;text-decoration:none;cursor:pointer;border:1.5px solid transparent;transition:background .15s,border-color .15s,transform .05s}
.btn:active{transform:translateY(1px)}
.btn:focus-visible,.txt:focus-visible,summary:focus-visible{outline:3px solid var(--focus);outline-offset:2px}
.btn--primary{background:var(--brand);color:#fff;box-shadow:var(--sh-3)}
.btn--primary:hover{background:var(--brand-hover)} .btn--primary:active{background:var(--brand-active)}
.btn--secondary{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn--secondary:hover{background:var(--brand-50)}
.btn--inverse{background:#fff;color:var(--navy)} .btn--inverse:hover{background:var(--brand-50)}
.btn--block{width:100%}
@media (min-width:1024px){.btn--block{width:auto;min-width:240px}}
.txt{color:var(--brand);font-weight:600;text-decoration:none;font-size:var(--fs-sm)}
.txt:hover{text-decoration:underline}
/* Header */
.hdr{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--line)}
.hdr .wrap{display:flex;align-items:center;justify-content:space-between;height:56px}
.logo{display:flex;align-items:center;gap:8px;font-weight:800;font-size:18px;text-decoration:none;color:var(--ink)}
.logo img{width:28px;height:28px;border-radius:7px}
.hdr nav{display:none;gap:28px;font-size:15px;font-weight:500}
.hdr nav a{text-decoration:none;color:var(--ink-2)} .hdr nav a:hover{color:var(--ink)}
.hdr .right{display:flex;align-items:center;gap:16px}
.hdr .btn{height:40px;padding:0 16px;font-size:14px;display:none;box-shadow:none}
@media (min-width:1024px){.hdr .wrap{height:68px}.hdr nav{display:flex}.hdr .btn{display:inline-flex}}
/* Hero */
.hero{padding:28px 0 0;overflow:hidden;background:linear-gradient(180deg,#fff 0%,var(--brand-50) 100%)}
.hero-grid{display:grid;gap:32px}
.hero h1{margin-top:8px} .hero .lead{margin-top:12px}
.hero .cta{margin-top:24px;display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.hero .cta .btn{align-self:stretch}
@media (min-width:1024px){.hero{padding:80px 0 0}.hero-grid{grid-template-columns:1fr 1fr;align-items:end}.hero .cta .btn{align-self:flex-start}.hero-text{padding-bottom:96px}}
.trust{margin-top:16px}
/* Phone frame + image slot */
.phone{width:260px;margin:0 auto;border-radius:36px 36px 0 0;border:8px solid #111827;border-bottom:0;background:#fff;overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:260/360}
@media (min-width:1024px){.phone{width:340px;aspect-ratio:340/560}}
.phone img{width:100%;height:auto;display:block}
/* Problem */
.checks{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:12px}
.checks li{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:16px 16px 16px 48px;position:relative;box-shadow:var(--sh-1)}
.checks li::before{content:"";position:absolute;left:16px;top:18px;width:20px;height:20px;border-radius:50%;background:var(--brand-50) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230160FB' stroke-width='3' stroke-linecap='round'%3E%3Cpath d='M12 8v5M12 16.5v.5'/%3E%3C/svg%3E") center/14px no-repeat}
@media (min-width:1024px){.checks{grid-template-columns:repeat(3,1fr)}}
/* Compare */
.cmp{width:100%;border-collapse:separate;border-spacing:0;margin-top:24px;font-size:var(--fs-sm);line-height:var(--lh-sm);background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}
.cmp th,.cmp td{padding:12px 10px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
.cmp tr:last-child td{border-bottom:0}
.cmp thead th{background:var(--bg-subtle);font-weight:700;font-size:13px}
.cmp th[scope=row]{font-weight:600;width:26%}
.cmp td.old{color:var(--ink-3);width:37%}
.cmp td.new,.cmp thead th.new{background:var(--brand-50);color:var(--ink);font-weight:600;width:37%}
.cmp thead th.new{color:var(--brand)}
@media (min-width:1024px){.cmp{font-size:16px;line-height:24px}.cmp th,.cmp td{padding:18px 24px}}
/* Features */
.feat-spot{display:grid;gap:24px;margin-top:32px}
.spot{background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);padding:24px 24px 0;overflow:hidden;box-shadow:var(--sh-1)}
.spot .phone{width:220px;margin-top:20px;aspect-ratio:220/260}
.feat-list{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:12px}
.feat-list li{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:16px}
.ico{flex:none;width:40px;height:40px;border-radius:var(--r-md);background:var(--brand-50);display:grid;place-items:center}
.ico svg{width:22px;height:22px;stroke:var(--brand);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.feat-list p,.spot p{color:var(--ink-2);font-size:15px;line-height:24px;margin-top:4px}
@media (min-width:1024px){.feat-spot{grid-template-columns:1fr 1fr}.feat-list{grid-template-columns:repeat(3,1fr)}}
/* How */
.steps{list-style:none;padding:0;margin:24px 0;display:grid;gap:12px;counter-reset:s}
.steps li{counter-increment:s;display:flex;gap:14px;align-items:flex-start}
.steps li::before{content:counter(s);flex:none;width:32px;height:32px;border-radius:50%;background:var(--brand);color:#fff;font-weight:700;display:grid;place-items:center;font-size:15px}
@media (min-width:1024px){.steps{grid-template-columns:repeat(3,1fr);gap:24px}}
/* Pricing */
.plans{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:24px}
.plan{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:16px;display:flex;flex-direction:column;gap:6px}
.plan .name{font-weight:700;font-size:15px}
.plan .price{font-size:22px;line-height:30px;font-weight:800;letter-spacing:-0.02em}
.plan .price small{font-size:13px;font-weight:500;color:var(--ink-3)}
.plan .desc{font-size:13px;line-height:20px;color:var(--ink-2)}
.plan--free{border-color:var(--brand);box-shadow:0 0 0 1px var(--brand) inset}
@media (min-width:1024px){.plans{grid-template-columns:repeat(4,1fr);gap:20px}.plan{padding:24px}.plan .price{font-size:30px;line-height:38px}}
.pre{margin-top:24px;background:var(--brand-50);border:1px solid var(--brand-100);border-radius:var(--r-xl);padding:24px}
.pre .btn{margin-top:16px}
/* Center */
.sec--navy .lead{color:#CBD5E1} .sec--navy .eyebrow{color:#9CC1FF}
.center-card{display:grid;gap:24px}
.center-card .btn{margin-top:8px}
.sec--navy .muted{color:#9CA3AF}
@media (min-width:1024px){.center-card{grid-template-columns:1.2fr 1fr;align-items:center}}
/* FAQ */
.faq{margin-top:24px;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;padding:18px 40px 18px 0;font-weight:600;position:relative;min-height:56px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";position:absolute;right:8px;top:24px;width:10px;height:10px;border-right:2px solid var(--ink-3);border-bottom:2px solid var(--ink-3);transform:rotate(45deg);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(-135deg);top:28px}
.faq .a{padding:0 0 20px;color:var(--ink-2)}
@media (min-width:1024px){.faq{max-width:800px}}
/* Final */
.final{text-align:center}
.final .lead{color:#DCE8FF;margin-top:12px}
.final .btn{margin-top:24px}
.stores{display:flex;gap:12px;justify-content:center;margin-top:20px}
.store{height:40px;padding:0 14px;border-radius:8px;background:#000;color:#fff;display:inline-flex;align-items:center;font-size:13px;text-decoration:none}
footer{background:var(--navy);color:#9CA3AF;font-size:13px;line-height:20px;padding:32px 0 120px}
footer a{color:#CBD5E1} footer .links{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:12px}
@media (min-width:1024px){footer{padding-bottom:40px}}
/* Sticky mobile CTA */
.sticky{position:fixed;left:0;right:0;bottom:0;z-index:30;padding:12px var(--gutter) calc(12px + env(safe-area-inset-bottom));background:rgba(255,255,255,.96);
  border-top:1px solid var(--line);box-shadow:0 -4px 16px rgba(11,27,63,.08);transform:translateY(110%);transition:transform .25s ease}
.sticky.show{transform:none}
.sticky .btn{width:100%;box-shadow:none}
@media (min-width:1024px){.sticky{display:none}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.sticky{transition:none}}
[hidden]{display:none!important}
.spot .cap{padding-bottom:16px}
.feat-spot{align-items:start}
.pre{margin-top:0}
.pre h3{margin-bottom:0}
.sec--pre{padding:40px 0}
@media (min-width:1024px){.sec--pre{padding:64px 0}.pre{display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:center}.pre .btn{margin-top:0}}
.store{font-weight:600}
.store:focus-visible{outline:3px solid #fff;outline-offset:2px}
footer .biz{margin-top:4px}
.final .lead{color:#fff}
.pre .muted{color:var(--ink-2)}