:root{
  --ink:#16141A; --paper:#FAF7F1; --paper-2:#F3EFE7; --brown:#221E1A;
  --gold:#E8A934; --gold-2:#F5C518; --teal:#22A188; --purple:#6A5AE0; --coral:#F0713F;
  --w-max:1100px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--ink);color:var(--paper);font-family:'Pretendard Variable',Pretendard,-apple-system,sans-serif;-webkit-font-smoothing:antialiased;word-break:keep-all;overflow-wrap:break-word}
h1,h2,h3,p{margin:0;text-wrap:pretty}
a{text-decoration:none;color:inherit}
img,video{max-width:100%;display:block}
.wrap{max-width:var(--w-max);margin:0 auto;padding:0 clamp(20px,5vw,64px)}

/* nav */
.nav{position:sticky;top:0;z-index:100;background:rgba(22,20,26,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(250,247,241,.08)}
.nav-inner{max-width:var(--w-max);margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:16px clamp(20px,5vw,64px)}
.brand{font-weight:800;font-size:19px;letter-spacing:.04em}
.brand em{font-style:normal;color:var(--gold)}
.nav-toggle{display:none;background:none;border:none;color:var(--paper);font-size:24px;cursor:pointer;padding:4px 8px}
.nav-links{display:flex;align-items:center;gap:clamp(14px,2.5vw,30px);list-style:none;margin:0;padding:0}
.nav-links a{font-size:14px;color:rgba(250,247,241,.7)}
.nav-links a:hover{color:var(--paper)}

/* buttons */
.btn{display:inline-block;font-weight:800;border-radius:10px;padding:14px 30px;font-size:16px;transition:all .2s}
.btn-gold{background:var(--gold);color:var(--ink)}
.btn-gold:hover{background:#f2bb50;color:var(--ink)}
.btn-line{border:1px solid rgba(250,247,241,.3);color:var(--paper)}
.btn-line:hover{border-color:var(--gold);color:var(--gold)}
.btn-ink{background:var(--ink);color:var(--paper)}
.btn-ink:hover{background:#2a2731}
.btn-nav{padding:10px 20px!important;font-size:14px!important}

/* hero */
.hero{position:relative;overflow:hidden;min-height:88vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:96px 20px 80px}
.hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;pointer-events:none}
.hero-veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(22,20,26,.55) 0%,rgba(22,20,26,.35) 45%,rgba(22,20,26,.7) 100%);pointer-events:none}
.aurora{position:absolute;inset:0;pointer-events:none}
.blob{position:absolute;width:560px;height:560px;border-radius:50%;filter:blur(90px);opacity:.35;animation:drift 14s ease-in-out infinite alternate}
.b-purple{background:var(--purple);top:-160px;left:-120px}
.b-teal{background:var(--teal);bottom:-180px;left:30%;animation-delay:-5s}
.b-coral{background:var(--coral);top:-120px;right:-140px;animation-delay:-9s}
@keyframes drift{from{transform:translate(0,0) scale(1)}to{transform:translate(60px,40px) scale(1.12)}}
.hero-grain{position:absolute;inset:0;pointer-events:none;opacity:.5;background:radial-gradient(ellipse at 50% 0%,rgba(232,169,52,.10),transparent 60%)}
.hero-inner{position:relative;max-width:820px;display:flex;flex-direction:column;align-items:center;gap:26px}
.eyebrow{font-size:13px;font-weight:700;letter-spacing:.22em;color:var(--gold)}
.hero h1{font-size:clamp(42px,7vw,84px);font-weight:800;line-height:1.14;letter-spacing:-.02em}
.grad{background:linear-gradient(100deg,var(--gold) 10%,var(--coral) 50%,var(--purple) 90%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{font-size:clamp(16px,2vw,19px);line-height:1.75;color:rgba(250,247,241,.75)}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;justify-content:center}
.scroll-hint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);font-size:11px;letter-spacing:.3em;color:rgba(250,247,241,.4)}

/* trust strip */
.trust{border-top:1px solid rgba(250,247,241,.08);border-bottom:1px solid rgba(250,247,241,.08);background:rgba(250,247,241,.02)}
.trust-grid{max-width:var(--w-max);margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);text-align:center}
.trust-cell{padding:30px 12px;border-left:1px solid rgba(250,247,241,.08)}
.trust-cell:first-child{border-left:none}
.trust-num{font-size:clamp(24px,3vw,36px);font-weight:800;color:var(--gold)}
.trust-cell p:last-child{margin-top:6px;font-size:13px;color:rgba(250,247,241,.6)}

/* sections */
.section{padding:clamp(80px,10vw,130px) 0;position:relative;overflow:hidden}
.center{text-align:center;max-width:780px;margin:0 auto}
.kicker{font-size:13px;font-weight:700;letter-spacing:.18em;margin-bottom:16px;color:rgba(250,247,241,.6)}
.k-gold{color:var(--gold)}.k-teal{color:var(--teal)}.k-purple{color:#8A7CF0}.k-coral{color:var(--coral)}
.title{font-size:clamp(30px,4.4vw,48px);font-weight:800;line-height:1.25;letter-spacing:-.01em}
.lead{font-size:clamp(16px,1.9vw,18px);line-height:1.8;color:rgba(250,247,241,.7);margin-top:20px;max-width:680px}
.center .lead{margin-left:auto;margin-right:auto}

/* chapters */
.chapter-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:56px}
.chapter{display:flex;flex-direction:column;gap:14px;background:rgba(250,247,241,.04);border:1px solid rgba(250,247,241,.1);border-radius:18px;padding:36px 30px;transition:border-color .25s,transform .25s}
.chapter:hover{transform:translateY(-4px)}
.ch-teal:hover{border-color:rgba(34,161,136,.6)}
.ch-purple:hover{border-color:rgba(106,90,224,.6)}
.ch-coral:hover{border-color:rgba(240,113,63,.6)}
.ch-num{font-size:40px;font-weight:800;line-height:1;color:transparent;-webkit-text-stroke:1.5px rgba(250,247,241,.4)}
.ch-teal .ch-num{-webkit-text-stroke-color:var(--teal)}
.ch-purple .ch-num{-webkit-text-stroke-color:#8A7CF0}
.ch-coral .ch-num{-webkit-text-stroke-color:var(--coral)}
.chapter h3{font-size:21px;font-weight:800}
.chapter p{font-size:15px;line-height:1.7;color:rgba(250,247,241,.65)}
.ch-go{margin-top:auto;font-size:14px;font-weight:700}
.ch-teal .ch-go{color:var(--teal)}.ch-purple .ch-go{color:#8A7CF0}.ch-coral .ch-go{color:var(--coral)}

/* detail sections */
.detail{position:relative;overflow:hidden;padding:clamp(80px,10vw,130px) 0;background:var(--paper);color:var(--brown)}
.detail .lead{color:rgba(34,30,26,.7)}
.detail .title{color:var(--brown)}
.watermark{position:absolute;top:-30px;right:clamp(-40px,2vw,40px);font-size:clamp(160px,24vw,340px);font-weight:800;line-height:1;color:transparent;pointer-events:none;user-select:none}
.wm-teal{-webkit-text-stroke:2px rgba(34,161,136,.22)}
.wm-purple{-webkit-text-stroke:2px rgba(106,90,224,.22)}
.wm-coral{-webkit-text-stroke:2px rgba(240,113,63,.25)}
.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(36px,5vw,64px);align-items:center;position:relative}
.d-purple{background:var(--ink);color:var(--paper)}
.d-purple .title{color:var(--paper)}
.d-purple .lead{color:rgba(250,247,241,.7)}
.feature-list{list-style:none;margin:28px 0 0;padding:0;display:flex;flex-direction:column;gap:14px}
.feature-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;line-height:1.6}
.tick{flex:none;width:22px;height:22px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;color:#fff;margin-top:1px}
.bg-teal{background:var(--teal)}.bg-purple{background:var(--purple)}.bg-coral{background:var(--coral)}
.detail-media video,.detail-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:16px;box-shadow:0 24px 60px rgba(22,20,26,.25)}

/* creed */
.creed{background:var(--ink);text-align:center}
.creed-light{position:absolute;top:-140px;left:50%;transform:translateX(-50%);width:760px;height:520px;background:radial-gradient(ellipse,rgba(232,169,52,.14),transparent 65%);pointer-events:none}
.creed h2{font-family:'Noto Serif KR',serif;font-size:clamp(26px,3.8vw,42px);font-weight:600;line-height:1.5}
.creed h2 strong{color:var(--gold)}
.creed-sub{font-family:'Noto Serif KR',serif;font-size:clamp(15px,1.9vw,18px);line-height:1.9;color:rgba(250,247,241,.7);margin-top:22px}
.creed-values{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:60px;text-align:left}
.creed-card{background:rgba(250,247,241,.04);border:1px solid rgba(250,247,241,.1);border-radius:16px;padding:32px 28px}
.creed-card h3{font-size:19px;font-weight:800;color:var(--gold);margin-bottom:12px}
.creed-card p{font-size:15px;line-height:1.75;color:rgba(250,247,241,.68)}

/* report */
.system{background:var(--paper);color:var(--brown)}
.system .title{color:var(--brown)}
.system .lead{color:rgba(34,30,26,.7)}
.report-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(36px,5vw,72px);align-items:center}
.report-mock{background:#fff;border:1px solid rgba(34,30,26,.1);border-radius:18px;padding:32px 30px;box-shadow:0 20px 50px rgba(34,30,26,.1)}
.rm-head{display:flex;justify-content:space-between;font-size:13px;font-weight:800;letter-spacing:.06em;padding-bottom:16px;border-bottom:2px solid var(--ink);margin-bottom:22px}
.rm-head span:last-child{color:rgba(34,30,26,.45);font-weight:600}
.rm-label{display:flex;justify-content:space-between;font-size:14px;font-weight:700;margin:18px 0 8px}
.bar{height:8px;background:rgba(34,30,26,.08);border-radius:99px;overflow:hidden}
.bar span{display:block;height:100%;border-radius:99px}
.rm-quote{margin-top:26px;font-size:14px;line-height:1.75;color:rgba(34,30,26,.65);font-style:italic;border-left:3px solid var(--gold);padding-left:14px}

/* demoday */
.demoday{background:var(--ink);text-align:center}
.dd-glow{position:absolute;bottom:-160px;left:50%;transform:translateX(-50%);width:700px;height:420px;background:radial-gradient(ellipse,rgba(240,113,63,.16),transparent 65%);pointer-events:none}



/* hero CSC block — 강조 */
.hero-csc{position:relative;margin-top:38px;max-width:680px;background:linear-gradient(135deg,rgba(232,169,52,.14) 0%,rgba(250,247,241,.05) 45%,rgba(106,90,224,.10) 100%);border:2px solid var(--gold);border-radius:18px;padding:28px 30px;text-align:left;display:flex;flex-direction:column;gap:12px;box-shadow:0 0 0 1px rgba(232,169,52,.2),0 18px 50px rgba(232,169,52,.15);animation:cscGlow 3.2s ease-in-out infinite alternate}
@keyframes cscGlow{from{box-shadow:0 0 0 1px rgba(232,169,52,.2),0 18px 50px rgba(232,169,52,.12)}to{box-shadow:0 0 0 1px rgba(232,169,52,.45),0 18px 60px rgba(232,169,52,.28)}}
.hero-csc .hc-tag{display:inline-flex;align-items:center;gap:8px;font-size:clamp(16px,2.2vw,20px);font-weight:900;letter-spacing:.08em;color:var(--gold)}
.hero-csc .hc-tag::before{content:'';width:9px;height:9px;border-radius:50%;background:var(--gold);animation:cscDot 1.6s ease-in-out infinite alternate}
@keyframes cscDot{from{opacity:.4;transform:scale(.85)}to{opacity:1;transform:scale(1.15)}}
.hero-csc .hc-body{font-size:clamp(14.5px,1.8vw,16px);line-height:1.8;color:rgba(250,247,241,.8)}
.hero-csc .hc-body b{color:var(--paper);font-size:1.06em}
.hc-teal{color:var(--teal);font-weight:800}
.hc-purple{color:#8A7CF0;font-weight:800}
.hero-csc .hc-go{align-self:flex-end;display:inline-block;margin-top:4px;background:var(--gold);color:var(--ink);font-size:14.5px;font-weight:800;padding:11px 22px;border-radius:9px;transition:background .2s}
.hero-csc .hc-go:hover{background:#f2bb50;color:var(--ink)}
/* CSC banner */
.csc-banner{padding:clamp(28px,4vw,44px) 0;border-bottom:1px solid rgba(250,247,241,.08)}
.csc-inner{display:flex;align-items:center;gap:clamp(14px,2.5vw,24px);background:rgba(255,255,255,.04);border:1px solid rgba(232,169,52,.4);border-radius:16px;padding:clamp(18px,3vw,26px) clamp(18px,3vw,30px);transition:border-color .25s,transform .25s}
.csc-inner:hover{border-color:var(--gold);transform:translateY(-2px)}
.csc-icon{flex:none;display:flex}
.csc-text{flex:1;min-width:0;display:flex;flex-direction:column;gap:4px}
.csc-text b{font-size:clamp(16px,2.2vw,19px);font-weight:800;color:var(--paper)}
.csc-text span{font-size:13.5px;line-height:1.6;color:rgba(250,247,241,.6)}
.csc-go{flex:none;font-size:14px;font-weight:800;color:var(--gold)}
@media(max-width:560px){.csc-inner{flex-wrap:wrap}.csc-go{width:100%}}

/* youtube banner */
.yt-banner{padding:clamp(28px,4vw,44px) 0;background:rgba(250,247,241,.02);border-top:1px solid rgba(250,247,241,.08);border-bottom:1px solid rgba(250,247,241,.08)}
.yt-inner{display:flex;align-items:center;gap:clamp(14px,2.5vw,24px);background:rgba(255,255,255,.04);border:1px solid rgba(255,0,0,.35);border-radius:16px;padding:clamp(18px,3vw,26px) clamp(18px,3vw,30px);transition:border-color .25s,transform .25s}
.yt-inner:hover{border-color:#FF0000;transform:translateY(-2px)}
.yt-icon{flex:none;display:flex}
.yt-text{flex:1;min-width:0;display:flex;flex-direction:column;gap:4px}
.yt-text b{font-size:clamp(16px,2.2vw,19px);font-weight:800;color:var(--paper)}
.yt-text span{font-size:13.5px;line-height:1.6;color:rgba(250,247,241,.6)}
.yt-go{flex:none;font-size:14px;font-weight:800;color:#FF4444}
@media(max-width:560px){.yt-inner{flex-wrap:wrap}.yt-go{width:100%}}

/* final */
.final{background:var(--gold-2);color:var(--ink);text-align:center}
.final .title{color:var(--ink)}
.final .lead{color:rgba(22,20,26,.75)}
.final .btn-ink{margin-top:36px}

/* footer */
footer{border-top:1px solid rgba(250,247,241,.08);padding:44px 0;font-size:13.5px;color:rgba(250,247,241,.55)}
.foot-inner{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;flex-wrap:wrap}
footer .brand{font-size:17px;color:var(--paper)}
footer p{line-height:1.7}

/* reveal animation */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.on{opacity:1;transform:none}

/* responsive */
@media (max-width:860px){
  .nav-toggle{display:block}
  .nav-links{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:flex-start;background:rgba(22,20,26,.98);padding:18px clamp(20px,5vw,64px) 26px;gap:16px;border-bottom:1px solid rgba(250,247,241,.1)}
  .nav-links.open{display:flex}
  .trust-grid{grid-template-columns:repeat(2,1fr)}
  .trust-cell{border-left:none;border-top:1px solid rgba(250,247,241,.08)}
  .chapter-grid,.creed-values{grid-template-columns:1fr}
  .detail-grid,.report-grid{grid-template-columns:1fr}
  .hero{min-height:72vh}
}

/* mobile readability */
@media (max-width:640px){
  .hero{padding:72px 18px 64px}
  .hero-inner{gap:20px}
  .hero h1{font-size:clamp(30px,9vw,42px);line-height:1.22}
  .hero p{font-size:15px;line-height:1.85}
  .hero-cta{flex-direction:column;align-items:stretch;width:100%}
  .hero-cta .btn{text-align:center}
  .hero-csc{padding:20px 18px;margin-top:26px}
  .hero-csc .hc-body{font-size:14px;line-height:1.85}
  .hero-csc .hc-go{align-self:stretch;text-align:center}
  .wrap{padding:0 18px}
  .section{padding:64px 0}
  .title{font-size:clamp(24px,7vw,30px);line-height:1.32}
  .lead{font-size:15px;line-height:1.85;margin-top:16px}
  .kicker{font-size:12px;letter-spacing:.14em}
  .trust-grid{grid-template-columns:repeat(2,1fr)}
  .trust-cell{padding:22px 10px}
  .trust-num{font-size:22px}
  .chapter{padding:26px 22px}
  .chapter h3{font-size:19px}
  .chapter p{font-size:14px;line-height:1.8}
  .detail{padding:64px 0}
  .detail-grid{gap:28px}
  .feature-list li{font-size:14.5px;line-height:1.75}
  .watermark{font-size:120px;top:-16px}
  .creed h2{font-size:22px;line-height:1.6}
  .creed-sub{font-size:14px;line-height:1.9}
  .creed-card{padding:24px 20px}
  .creed-card p{font-size:14px;line-height:1.8}
  .report-mock{padding:24px 20px}
  .rm-quote{font-size:13px;line-height:1.8}
  .csc-inner,.yt-inner{padding:18px;gap:12px}
  .csc-text b,.yt-text b{font-size:15.5px}
  .csc-text span,.yt-text span{font-size:12.5px}
  .csc-go,.yt-go{width:100%}
  .final .btn-ink{width:100%;box-sizing:border-box;text-align:center}
  .foot-inner{flex-direction:column;align-items:flex-start;gap:14px}
  footer{font-size:12.5px}
  footer p{line-height:1.8}
}