/* Pagefold — 주홍(vermilion) + 먹색 + 차가운 종이흰색. 색은 :root 토큰 한 곳. */
@font-face{font-family:"Pretendard";src:url(/fonts/PretendardVariable.woff2) format("woff2-variations");font-weight:45 920;font-display:swap}
:root{
  --red:#ff4b2b; --red-d:#d93a1d; --red-l:#ffe3dc;
  --ink:#14110f; --ink-2:#3a3531; --muted:#6a645d;
  --paper:#f5f4f0; --white:#fff; --line:#dedad2; --line-2:#c9c4ba;
  --ok:#0e8a55; --warn:#b4540a;
  --r:14px; --r-s:8px; --wrap:1160px;
  --shadow:0 1px 0 rgba(20,17,15,.06),0 10px 30px -12px rgba(20,17,15,.28);
  --font:"Pretendard",-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Noto Sans KR","Malgun Gothic",system-ui,sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font:400 16px/1.65 var(--font);color:var(--ink);background:var(--paper);word-break:keep-all;overflow-wrap:break-word}
img,svg,canvas{max-width:100%}
a{color:inherit}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--ink);outline-offset:2px;border-radius:4px}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:#fff;padding:8px 14px;border-radius:8px;z-index:100}
.skip:focus{left:8px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}

/* 머리말 */
.hdr{position:sticky;top:0;z-index:40;background:rgba(245,244,240,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.hdr .wrap{display:flex;align-items:center;justify-content:space-between;height:60px;gap:16px}
.brand{display:flex;align-items:center;gap:9px;text-decoration:none;white-space:nowrap}
.brand .logo{width:30px;height:30px;flex:none}
.brand b{font-weight:800;font-size:19px;letter-spacing:-.03em}
.brand small{color:var(--muted);font-size:12px;font-weight:500;margin-left:2px}
.nav{display:flex;gap:4px}
.nav a{text-decoration:none;font-weight:600;font-size:15px;padding:7px 14px;border-radius:99px;color:var(--ink-2)}
.nav a:hover{background:rgba(20,17,15,.07)}
.nav a[aria-current=page]{background:var(--ink);color:#fff}
.hdr--home{background:var(--red);border-bottom-color:rgba(20,17,15,.18)}
.hdr--home .brand small{color:rgba(20,17,15,.7)}
.hdr--home .nav a{color:var(--ink)}
.hdr--home .nav a:hover{background:rgba(20,17,15,.12)}

/* 단추 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 22px;border:2px solid var(--ink);border-radius:12px;background:var(--white);font-weight:700;font-size:16px;text-decoration:none;cursor:pointer;box-shadow:0 3px 0 var(--ink);transition:transform .08s,box-shadow .08s}
.btn:hover{transform:translateY(1px);box-shadow:0 2px 0 var(--ink)}
.btn:active{transform:translateY(3px);box-shadow:0 0 0 var(--ink)}
.btn--ink{background:var(--ink);color:#fff}
.btn--red{background:var(--red);color:var(--ink)}
.btn--s{min-height:36px;padding:0 14px;font-size:14px;border-radius:9px;box-shadow:0 2px 0 var(--ink)}
.btn[disabled],.btn[aria-disabled=true]{opacity:.45;pointer-events:none}

/* ===== 홈: 히어로 ===== */
.hero{background:var(--red);position:relative;overflow:hidden;padding:56px 0 150px}
.hero::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(115deg,transparent 0 46px,rgba(20,17,15,.05) 46px 47px);pointer-events:none}
.hero .wrap{display:grid;grid-template-columns:1.02fr .98fr;gap:28px;align-items:center;position:relative}
.hero .eyebrow{display:inline-flex;gap:8px;align-items:center;font:700 13px var(--mono);letter-spacing:.04em;text-transform:uppercase;background:var(--ink);color:#fff;padding:6px 12px;border-radius:99px}
.hero h1{font-size:clamp(40px,6.4vw,84px);line-height:1.04;letter-spacing:-.045em;font-weight:900;margin:20px 0 18px}
.hero h1 em{font-style:normal;color:#fff;position:relative;white-space:nowrap}
.hero h1 .ul{display:inline-block;position:relative}
.hero h1 .ul::after{content:"";position:absolute;left:-2%;right:-2%;bottom:.04em;height:.14em;background:var(--ink);transform:skew(-8deg)}
.hero .lead{font-size:clamp(17px,2vw,20px);max-width:30em;margin:0 0 28px;color:var(--ink);font-weight:500}
.hero .cta{display:flex;flex-wrap:wrap;gap:12px}
.hero .proof{display:flex;flex-wrap:wrap;gap:6px 18px;margin:26px 0 0;padding:0;list-style:none;font-weight:700;font-size:14px}
.hero .proof li::before{content:"";display:inline-block;width:9px;height:9px;background:var(--ink);margin-right:8px;clip-path:polygon(0 0,100% 0,100% 100%)}
/* 종이 더미 */
.stack{position:relative;aspect-ratio:1/1.06;max-width:520px;margin-left:auto;width:100%}
.sheet{position:absolute;width:62%;aspect-ratio:1/1.414;background:#fff;border:2.5px solid var(--ink);border-radius:6px;box-shadow:8px 10px 0 rgba(20,17,15,.9);padding:9% 8%;overflow:hidden}
.sheet i{display:block;height:7px;background:#e6e2d9;border-radius:4px;margin:0 0 9px}
.sheet i:nth-child(3n){width:78%}.sheet i:nth-child(4n){width:60%}
.sheet.s1{left:2%;top:10%;transform:rotate(-9deg);animation:in1 1.1s cubic-bezier(.2,.8,.2,1) both}
.sheet.s2{left:19%;top:5%;transform:rotate(-1.5deg);animation:in2 1.1s .12s cubic-bezier(.2,.8,.2,1) both}
.sheet.s3{left:36%;top:11%;transform:rotate(8deg);animation:in3 1.1s .24s cubic-bezier(.2,.8,.2,1) both}
.sheet.s3{padding-top:12%}
.sheet.s3::after{content:"";position:absolute;right:-1px;top:-1px;width:26%;aspect-ratio:1;background:linear-gradient(225deg,var(--red) 50%,#2b2622 50%);border-bottom-left-radius:4px;box-shadow:-3px 3px 0 rgba(20,17,15,.35);animation:curl 1.2s .9s ease-out both}
.sheet .hl{display:block;height:15px;margin:0 0 9px -4px;width:88%;background:#ffd400;mix-blend-mode:multiply;border-radius:2px;transform-origin:left;animation:sweep .7s 1.15s ease-out both}
.sheet .typed{font:700 15px var(--font);color:#1b3cff;margin:8px 0 10px;white-space:nowrap;overflow:hidden;width:0;border-right:2px solid #1b3cff;animation:type 1.1s 1.6s steps(5,end) both}
.sheet .sig{display:block;width:76%;margin-top:6px}
.sheet .sig path{stroke-dasharray:400;stroke-dashoffset:400;animation:draw 1.5s 2.3s ease-in-out both}
.stamp{position:absolute;right:3%;bottom:7%;z-index:3;transform:rotate(-12deg);border:4px solid var(--ink);color:var(--ink);background:rgba(255,255,255,.0);border-radius:10px;padding:2px 16px;font:900 clamp(26px,4vw,40px)/1.2 var(--font);letter-spacing:.06em;box-shadow:inset 0 0 0 2px var(--red);animation:slam .5s 3s cubic-bezier(.3,1.6,.5,1) both}
.cut{position:absolute;left:-2%;right:-2%;top:55%;height:0;border-top:3px dashed var(--ink);z-index:2;transform:rotate(-3deg);opacity:.9}
.cut::before{content:"\2702";position:absolute;left:12%;top:-19px;font-size:26px;line-height:1;background:var(--red);padding:0 4px;transform:rotate(180deg)}
@keyframes in1{from{transform:translateX(-120%) rotate(-30deg);opacity:0}}
@keyframes in2{from{transform:translateY(-70%) rotate(8deg);opacity:0}}
@keyframes in3{from{transform:translateX(130%) rotate(30deg);opacity:0}}
@keyframes curl{from{width:0;height:0}}
@keyframes sweep{from{transform:scaleX(0)}}
@keyframes type{to{width:5em}}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes slam{from{transform:rotate(-12deg) scale(2.4);opacity:0}}
@media (prefers-reduced-motion:reduce){.sheet,.sheet *,.stamp,.sheet::after{animation:none!important}.sheet .typed{width:5em}.sheet .sig path{stroke-dashoffset:0}}

/* 도구 카드(히어로에 걸친다) */
.tools{margin-top:-96px;position:relative;z-index:2}
.tools ul{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;list-style:none;margin:0;padding:0}
.tcard{display:flex;flex-direction:column;gap:10px;min-height:210px;padding:24px 24px 22px;background:var(--white);border:2.5px solid var(--ink);border-radius:var(--r);text-decoration:none;position:relative;box-shadow:6px 7px 0 var(--ink);transition:transform .12s,box-shadow .12s;overflow:hidden}
.tcard::after{content:"";position:absolute;right:0;top:0;width:44px;height:44px;background:linear-gradient(225deg,var(--paper) 50%,var(--ink) 50%)}
.tcard:hover{transform:translate(-2px,-3px);box-shadow:9px 11px 0 var(--ink)}
.tcard .no{font:800 14px var(--mono);color:var(--red-d)}
.tcard h2{font-size:28px;line-height:1.15;letter-spacing:-.035em;margin:0;font-weight:900}
.tcard p{margin:0;color:var(--ink-2);font-size:15.5px}
.tcard .go{margin-top:auto;font-weight:800;display:flex;align-items:center;gap:6px}
.tcard .go::after{content:"\2192";transition:transform .15s}.tcard:hover .go::after{transform:translateX(5px)}

/* 섹션 공통 */
.sec{padding:96px 0 0}
.sec .kicker{font:800 13px var(--mono);letter-spacing:.06em;color:var(--red-d);text-transform:uppercase}
.sec h2.big{font-size:clamp(30px,4.4vw,52px);line-height:1.1;letter-spacing:-.04em;font-weight:900;margin:10px 0 14px;max-width:16em}
.sec .sub{max-width:38em;color:var(--ink-2);font-size:18px;margin:0 0 36px}
.foldline{height:0;border-top:2.5px dashed var(--line-2);margin:96px 0 0;position:relative}
.foldline::after{content:"\2702";position:absolute;left:8%;top:-15px;font-size:24px;background:var(--paper);padding:0 8px;color:var(--ink-2);transform:rotate(180deg)}

/* 할 수 있는 일(벤토) */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.bc{background:var(--white);border:2px solid var(--ink);border-radius:var(--r);padding:22px;display:flex;flex-direction:column;gap:8px;min-height:190px;position:relative;overflow:hidden}
.bc h3{margin:0;font-size:21px;letter-spacing:-.03em;font-weight:800}
.bc p{margin:0;color:var(--ink-2);font-size:15px}
.bc .ic{width:44px;height:44px;border-radius:12px;background:var(--red);border:2px solid var(--ink);display:grid;place-items:center;margin-bottom:6px}
.bc .ic svg{width:24px;height:24px}
.bc--w2{grid-column:span 2}.bc--w3{grid-column:span 3}.bc--w4{grid-column:span 4}
.bc--ink{background:var(--ink);color:#fff}.bc--ink p{color:#d8d3cc}.bc--ink .ic{border-color:#fff}
.bc--red{background:var(--red)}.bc--red p{color:var(--ink)}.bc--red .ic{background:var(--white)}
.bc .mini{display:flex;gap:6px;margin-top:auto;flex-wrap:wrap}
.chip{display:inline-block;font:700 12.5px var(--mono);padding:3px 9px;border:1.5px solid currentColor;border-radius:99px}

/* 프라이버시(먹색 띠) */
.dark{background:var(--ink);color:#fff;margin-top:96px;padding:84px 0;position:relative;overflow:hidden}
.dark .kicker{color:var(--red)}
.dark h2{font-size:clamp(32px,5vw,60px);line-height:1.08;letter-spacing:-.045em;font-weight:900;margin:10px 0 22px;max-width:14em}
.dark h2 em{font-style:normal;color:var(--red)}
.dark .cols{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:34px}
.dark .col{border-top:3px solid var(--red);padding-top:14px}
.dark .col b{display:block;font-size:19px;margin-bottom:6px}
.dark .col p{margin:0;color:#cfc9c1;font-size:15.5px}
.dark code{font:600 13.5px var(--mono);background:rgba(255,255,255,.1);padding:2px 7px;border-radius:6px}

/* 못 하는 일 */
.limits{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.limit{background:var(--white);border:2px dashed var(--line-2);border-radius:var(--r);padding:20px 22px}
.limit b{display:block;font-size:17px;margin-bottom:4px}
.limit p{margin:0;color:var(--ink-2);font-size:15px}

/* FAQ */
.faq{max-width:820px}
.faq details{border-bottom:2px solid var(--ink);padding:0}
.faq summary{cursor:pointer;list-style:none;padding:18px 0;font-weight:800;font-size:18px;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font:800 24px/1 var(--mono);color:var(--red-d)}
.faq details[open] summary::after{content:"\2212"}
.faq details p{margin:0 0 20px;color:var(--ink-2);max-width:42em}

.endcta{margin-top:96px;background:var(--red);border-top:2.5px solid var(--ink);border-bottom:2.5px solid var(--ink);padding:56px 0}
.endcta .wrap{display:flex;gap:24px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.endcta h2{font-size:clamp(28px,4vw,46px);letter-spacing:-.04em;margin:0;font-weight:900;line-height:1.1}

/* 꼬리말 */
.ftr{padding:28px 0 40px;font-size:14px;color:var(--muted)}
.ftr .wrap{display:flex;flex-wrap:wrap;gap:10px 28px;justify-content:space-between}
.ftr nav{display:flex;flex-wrap:wrap;gap:6px 20px}.ftr a{text-decoration:none}.ftr a:hover{text-decoration:underline}

/* 본문 글(개인정보·이용 안내) */
.doc{max-width:760px;padding:56px 20px 20px}
.doc h1{font-size:clamp(30px,4vw,44px);letter-spacing:-.04em;font-weight:900;line-height:1.15;margin:0 0 18px}
.doc h2{font-size:22px;margin:34px 0 8px;letter-spacing:-.02em}
.doc p,.doc li{color:var(--ink-2)}

@media (max-width:900px){
  .hero{padding:36px 0 130px}
  .hero .wrap{grid-template-columns:1fr}
  .stack{margin:8px auto 0;max-width:420px}
  .tools ul{grid-template-columns:1fr}.tcard{min-height:0}
  .bento{grid-template-columns:repeat(2,1fr)}.bc--w2,.bc--w3,.bc--w4{grid-column:span 2}
  .dark .cols,.limits{grid-template-columns:1fr}
}
@media (max-width:560px){
  .brand small{display:none}
  .nav a{padding:6px 10px;font-size:14px}
  .hdr .wrap{height:56px}
  .hero h1 em{white-space:normal}
  .bento{grid-template-columns:1fr}.bc--w2,.bc--w3,.bc--w4{grid-column:auto}
  .sec{padding-top:72px}.foldline{margin-top:72px}
}