/* ─────────────────────────────────────────────
   증명수학 PROOF Mathematics : 목동 중등 수학 전문 (3차 피드백 반영, 다시 디자인)
   섹션은 단색 면(종이색 · 깊은 남색 · 옅은 회청색)으로 나누고, 모눈은 '공책' 안에서만 쓴다.
   한글 = Pretendard / 영문 · 숫자 · 수식 = STIX Two Text (숫자는 바로 선 숫자, 이탤릭은 변수만)
   노랑은 답에 긋는 밑줄처럼, 포인트로만.
   ───────────────────────────────────────────── */
:root{
  --navy:#0F1E3D; --navy-2:#162A52; --navy-3:#22396B; --navy-d:#0A1530;
  --paper:#F7F6F2; --paper-2:#EFEDE6; --mist:#E6EAF0; --mist-2:#D9DFE8; --sheet:#FDFCF9;
  --ink:#0F1E3D; --ink-2:#4A536F; --mute:#5B6279;
  --line:rgba(15,30,61,.13); --line-2:rgba(15,30,61,.3);
  --on-d:#F2F0E9; --on-d2:#ADB4C7; --line-d:rgba(242,240,233,.15); --line-d2:rgba(242,240,233,.34);
  --hl:#FFC531; --hl-a:rgba(255,197,49,.6); --hl-d:#E3A600;
  --pen:#1A2C5A;
  --kr:"Pretendard Variable",Pretendard,-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Malgun Gothic",sans-serif;
  --en:"STIX Two Text","Pretendard Variable",Georgia,serif;
  --gut:clamp(20px,4.4vw,72px); --gap:clamp(16px,2vw,32px); --sec:clamp(112px,11.5vw,200px); --hd:80px;
  --ease:cubic-bezier(.16,1,.3,1); --io:cubic-bezier(.76,0,.24,1);
  /* 사진 톤: 조금 차분하게, 남색 쪽으로. 첫 화면 영상은 따로 */
  --grade:saturate(.84) contrast(1.04) brightness(.98);
  --pt-bg:#0F1E3D; --pt-ink:#F2F0E9;
}
*,*::before,*::after{box-sizing:border-box}
html{background:var(--paper);-webkit-text-size-adjust:100%}
html.lenis,html.lenis body{height:auto}
.lenis.lenis-smooth{scroll-behavior:auto!important}
.lenis.lenis-stopped{overflow:hidden}
body{margin:0;background:var(--paper);color:var(--ink);font:400 16.5px/1.85 var(--kr);letter-spacing:-.014em;word-break:keep-all;overflow-wrap:break-word;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:clip}
img,video,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit;letter-spacing:inherit}
button{background:none;border:0;padding:0;cursor:pointer}
h1,h2,h3,h4,p,figure,blockquote,dl,dd,ol,ul{margin:0}
ol,ul{padding:0;list-style:none}
h1,h2,h3{font-weight:650}
p{text-wrap:pretty}
::selection{background:var(--hl);color:var(--navy)}
:focus-visible{outline:2px solid var(--hl-d);outline-offset:3px}
.wrap{width:100%;max-width:1560px;margin:0 auto;padding:0 var(--gut)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.en{font-family:var(--en);font-weight:400;letter-spacing:0}
.num{font-family:var(--en);font-variant-numeric:lining-nums tabular-nums;letter-spacing:0}
.v{font-family:var(--en);font-style:italic;letter-spacing:0}
.mth{font-family:var(--en);font-variant-numeric:lining-nums;letter-spacing:.01em;white-space:nowrap}
.sc{font-family:var(--en);font-variant-caps:all-small-caps;letter-spacing:.1em}
.br-m{display:none}

/* ── 면: 섹션은 색 면으로 나눈다 ── */
.sec{padding:var(--sec) 0}
.s-paper{background:var(--paper)}
.s-mist{background:var(--mist)}
.s-navy,.dark{background:var(--navy);color:var(--on-d)}

/* ── 사진: 한 사람이 찍은 것처럼 ── */
.ph{position:relative;overflow:hidden;background:var(--mist-2)}
.ph>img,.ph>video,.vwrap>img,.vwrap>video{width:100%;height:100%;object-fit:cover;filter:var(--grade)}
.ph::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(180deg,rgba(30,53,100,.06),rgba(15,30,61,.12));mix-blend-mode:multiply}
html.js [data-reveal]{clip-path:inset(100% 0 0 0);transition:clip-path 1.5s var(--io);transition-delay:var(--d,0ms)}
html.js [data-reveal].in{clip-path:inset(0)}
html.js [data-reveal]>img{transform:scale(1.14);transition:transform 2.4s var(--ease);transition-delay:var(--d,0ms)}
html.js [data-reveal].in>img{transform:none}
[data-par]>img{position:absolute;left:0;top:-7%;width:100%;height:114%;will-change:transform}
/* 그림 설명: 교과서의 '그림 1'처럼 */
.cap{display:flex;align-items:baseline;gap:14px;margin-top:14px;font-size:13.5px;line-height:1.65;color:var(--ink-2)}
.cap .fig{flex:none;font:400 15px/1 var(--en);font-variant-caps:all-small-caps;letter-spacing:.1em;color:var(--ink)}
.cap b{color:var(--ink);font-weight:600}
.cap .r{margin-left:auto;flex:none;font:400 14px/1 var(--en);color:var(--ink)}
.dark .cap{color:var(--on-d2)} .dark .cap .fig,.dark .cap b,.dark .cap .r{color:var(--on-d)}
/* 화면 너비 사진 */
.band{position:relative}
.band .ph{height:clamp(440px,58vw,880px)}
.band .cap{padding:0 var(--gut);max-width:1560px;margin:16px auto 0}

/* ── 등장 ── */
html.js [data-r]{opacity:0;transform:translateY(28px);transition:opacity 1.2s var(--ease),transform 1.3s var(--ease);transition-delay:var(--d,0ms)}
html.js [data-r].in{opacity:1;transform:none}
.ln{display:block;overflow:hidden;padding-bottom:.14em;margin-bottom:-.14em}
html.js [data-lines] .ln>span{display:block;transform:translateY(112%);transition:transform 1.3s var(--ease);transition-delay:calc(var(--i) * 110ms + var(--d,0ms))}
html.js [data-lines].in .ln>span{transform:none}
html.js [data-io]{transition:opacity .01s}

/* 형광펜: 답에 밑줄 긋듯 */
.hl{background:linear-gradient(transparent 62%,var(--hl-a) 62%,var(--hl-a) 92%,transparent 92%) no-repeat 0 0/0% 100%;transition:background-size 1.1s var(--io);transition-delay:calc(var(--hd2,500ms) + var(--d,0ms));padding:0 .06em;margin:0 -.06em;-webkit-box-decoration-break:clone;box-decoration-break:clone}
.in .hl,.hl.in,html:not(.js) .hl{background-size:100% 100%}
.dark .hl{background-image:linear-gradient(transparent 82%,var(--hl) 82%,var(--hl) 94%,transparent 94%)}

/* ── 섹션 머리: 잡지의 머리글처럼 선 하나 ── */
.rh{display:flex;align-items:baseline;gap:16px;padding-bottom:16px;margin-bottom:clamp(56px,6vw,108px);border-bottom:1px solid var(--line-2);font-size:14px;font-weight:600;letter-spacing:-.02em;color:var(--ink)}
.rh .n{font:400 16px/1 var(--en);letter-spacing:.04em}
.rh .en{margin-left:auto;font:400 15px/1 var(--en);font-variant-caps:all-small-caps;letter-spacing:.12em;color:var(--ink-2)}
.dark .rh{color:var(--on-d);border-color:var(--line-d2)} .dark .rh .en{color:var(--on-d2)}
.ttl{font-size:clamp(38px,4.7vw,80px);font-weight:700;line-height:1.13;letter-spacing:-.058em}
.ttl .lt{font-weight:250;letter-spacing:-.05em}
.lead{font-size:clamp(16px,1.15vw,18px);line-height:1.9;color:var(--ink-2)}
.dark .lead{color:var(--on-d2)}
.sh{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:var(--gap);row-gap:28px;align-items:end;margin-bottom:clamp(56px,6vw,104px)}
.sh .ttl{grid-column:1/8}
.sh .lead{grid-column:9/13}
.foot-n{font-size:13px;color:var(--mute);line-height:1.75}
.foot-n::before{content:"* ";font-family:var(--en)}
.dark .foot-n{color:var(--on-d2)}

/* ── 버튼 ── */
.btn{--h:56px;position:relative;display:inline-flex;align-items:center;justify-content:center;gap:14px;height:var(--h);padding:0 28px;border-radius:2px;background:var(--navy);color:var(--paper);font-size:15.5px;font-weight:600;letter-spacing:-.02em;white-space:nowrap;transition:background .5s var(--ease),color .5s var(--ease),box-shadow .5s var(--ease)}
.btn .t{position:relative;display:block;overflow:hidden;line-height:1.4}
.btn .t>span{display:block;transition:transform .7s var(--ease)}
.btn .t>span::after{content:attr(data-t);position:absolute;left:0;top:100%;width:100%}
.btn:hover .t>span{transform:translateY(-100%)}
.btn .ar{width:16px;height:16px;flex:none;transition:transform .6s var(--ease)}
.btn:hover .ar{transform:translateX(4px)}
.btn:hover{background:var(--navy-3)}
.btn.y{background:var(--hl);color:var(--navy)} .btn.y:hover{background:#FFD45E}
.btn.light{background:var(--paper);color:var(--navy)} .btn.light:hover{background:#fff}
.btn.line{background:transparent;color:inherit;box-shadow:inset 0 0 0 1px var(--line-2)} .btn.line:hover{box-shadow:inset 0 0 0 1px currentColor;background:transparent}
.btn.ghost{background:transparent;color:#fff;box-shadow:inset 0 0 0 1px rgba(255,255,255,.55)} .btn.ghost:hover{background:#fff;color:var(--navy);box-shadow:none}
.dark .btn.line{box-shadow:inset 0 0 0 1px var(--line-d2)}
.btn.sm{--h:44px;padding:0 18px;font-size:14.5px;gap:10px}
.btn.full{width:100%}
.tlink{position:relative;display:inline-flex;align-items:center;gap:10px;font-size:15px;font-weight:600;padding-bottom:5px}
.tlink::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:currentColor;transform-origin:right;transition:transform .7s var(--ease)}
.tlink:hover::after{transform:scaleX(0)}
.tlink .ar{width:15px;height:15px;transition:transform .6s var(--ease)}
.tlink:hover .ar{transform:translateX(4px)}

/* ── 머리글: 어두운 첫 화면 위에서는 투명하게 ── */
.hd{position:fixed;left:0;right:0;top:0;z-index:60;background:rgba(247,246,242,.97);color:var(--ink);box-shadow:0 1px 0 var(--line);transition:transform .8s var(--ease),background .5s,color .5s,box-shadow .5s}
.hd.over{background:transparent;color:#fff;box-shadow:none}
.hd-in{display:flex;align-items:center;gap:clamp(20px,2.6vw,48px);height:var(--hd)}
.hd.hide{transform:translateY(-101%)}
.brand{display:inline-flex;align-items:center;gap:12px;line-height:1;flex:none}
.brand svg{width:30px;height:30px;flex:none}
.brand b{display:block;font-size:19px;font-weight:750;letter-spacing:-.045em}
.brand small{display:block;margin-top:6px;font:500 12px/1 var(--en);letter-spacing:.14em;opacity:.8}
.nav{display:flex;gap:clamp(22px,2.8vw,48px);margin-left:auto;font-size:15.5px;font-weight:550;letter-spacing:-.03em}
.nav a{position:relative;padding:8px 0;opacity:.74;transition:opacity .3s}
.nav a:hover,.nav a[aria-current]{opacity:1}
.nav a::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:1.5px;background:currentColor;transform:scaleX(0);transform-origin:right;transition:transform .6s var(--ease)}
.nav a:hover::after,.nav a[aria-current]::after{transform:scaleX(1);transform-origin:left}
.nav a[aria-current]::before{content:"";position:absolute;left:50%;top:-4px;width:5px;height:5px;margin-left:-2.5px;background:var(--hl)}
.hd-r{display:flex;align-items:center;gap:22px}
.hd-tel{display:inline-flex;align-items:center;gap:8px;font-size:16px}
.hd-tel svg{width:16px;height:16px}
.burger{display:none;width:44px;height:44px;margin-right:-10px;position:relative}
.burger i{position:absolute;left:11px;right:11px;height:1.6px;background:currentColor;transition:transform .5s var(--ease),top .5s var(--ease)}
.burger i:nth-child(1){top:18px}.burger i:nth-child(2){top:26px}
.menu-open .burger i:nth-child(1){top:22px;transform:rotate(45deg)}
.menu-open .burger i:nth-child(2){top:22px;transform:rotate(-45deg)}

/* ── 모바일 메뉴: 메뉴 · 학년별 반 · 신청 · 연락처가 한 화면에 ── */
.mnav{position:fixed;inset:0;z-index:55;background:var(--navy);color:var(--on-d);padding:calc(var(--hd) + 10px) var(--gut) calc(18px + env(safe-area-inset-bottom));display:flex;flex-direction:column;gap:clamp(18px,3vh,30px);clip-path:inset(0 0 100% 0);transition:clip-path .85s var(--io);visibility:hidden;overflow-y:auto}
.menu-open .mnav{clip-path:inset(0);visibility:visible}
.menu-open .hd{background:var(--navy);color:var(--on-d);box-shadow:0 1px 0 var(--line-d);transform:none}
.mn-links{display:grid;border-top:1px solid var(--line-d2)}
.mnav .mn-links a{display:flex;align-items:baseline;gap:16px;padding:11px 0;border-bottom:1px solid var(--line-d);font-size:23px;font-weight:500;letter-spacing:-.05em}
.mnav .mn-links a .n{width:26px;font:400 14px/1 var(--en);color:var(--on-d2)}
.mnav .mn-links a[aria-current]{color:var(--hl)}
.mn-k{display:flex;justify-content:space-between;font-size:13px;color:var(--on-d2);padding-bottom:8px;border-bottom:1px solid var(--line-d2)}
.mn-c{display:grid;grid-template-columns:50px minmax(0,1fr) auto;align-items:center;gap:12px;padding:9px 0;border-bottom:1px solid var(--line-d)}
.mn-c .gr{display:flex;align-items:baseline;gap:1px;font-size:13.5px;font-weight:600;color:var(--on-d2)}
.mn-c .gr b{font:400 36px/1 var(--en);color:var(--on-d)}
.mn-c strong{display:block;font-size:15.5px;font-weight:600;letter-spacing:-.03em;line-height:1.35}
.mn-c small{display:block;font-size:13px;color:var(--on-d2);line-height:1.4}
.mn-c em{font-style:normal;font-size:13px;color:var(--on-d2);text-align:right;white-space:nowrap}
.mn-c em .num{font-size:18px;color:var(--on-d)}
.mn-foot{display:grid;gap:10px;margin-top:auto}
.mn-foot .row{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.mn-foot .btn.line{box-shadow:inset 0 0 0 1px var(--line-d2);color:var(--on-d)}
.mn-foot p{font-size:13px;color:var(--on-d2);line-height:1.65}
.mn-links a,.mn-cls,.mn-foot{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .8s var(--ease)}
.menu-open .mn-links a,.menu-open .mn-cls,.menu-open .mn-foot{opacity:1;transform:none;transition-delay:calc(var(--i) * 50ms + .22s)}

/* ── 인트로: 남색 위에 증명 끝 표시(∎)가 그려지고 걷힌다 (세션당 한 번, 1.5초) ── */
.intro{position:fixed;inset:0;z-index:9700;pointer-events:none;display:grid;place-items:center;background:var(--navy);color:var(--on-d);clip-path:inset(0 0 0 0);transition:clip-path .62s var(--io)}
html:not(.js) .intro,html.intro-skip .intro{display:none}
.intro.go{clip-path:inset(0 0 100% 0)}
.intro-c{display:flex;align-items:center;gap:18px;transition:transform .62s var(--io),opacity .4s}
.intro.go .intro-c{transform:translateY(-40px);opacity:0}
.intro-qed{width:44px;height:44px;overflow:visible}
.intro-qed path{fill:var(--on-d);fill-opacity:0;stroke:var(--on-d);stroke-width:2.4;stroke-dasharray:1;stroke-dashoffset:1}
.intro.on .intro-qed path{stroke-dashoffset:0;fill-opacity:1;transition:stroke-dashoffset .46s var(--io),fill-opacity .2s .42s}
.intro-t{display:grid;gap:8px;opacity:0;transform:translateX(-8px);transition:opacity .45s var(--ease) .32s,transform .6s var(--ease) .32s}
.intro.on .intro-t{opacity:1;transform:none}
.intro-t b{font-size:27px;font-weight:750;letter-spacing:-.045em;line-height:1}
.intro-t small{font:500 12px/1 var(--en);letter-spacing:.16em;color:var(--on-d2)}
.intro-line{position:absolute;left:var(--gut);right:var(--gut);bottom:7vh;display:flex;justify-content:space-between;font:400 15px/1 var(--en);color:var(--on-d2);opacity:0;transition:opacity .4s .2s}
.intro-line span:first-child{font-family:var(--kr);font-size:14px}
.intro.on .intro-line{opacity:1}

/* ── 공용 premium.css (색은 증명수학 변수로, 맞춤 커서 없음) ── */
[data-magnetic]{transition:transform .7s var(--ease),background .5s var(--ease),color .5s var(--ease),box-shadow .5s var(--ease);will-change:transform}
[data-magnetic-inner]{display:inline-flex;transition:transform .7s var(--ease)}
.sp{display:inline-block;overflow:hidden;vertical-align:top;padding-bottom:.12em;margin-bottom:-.12em}
.sp-i{display:inline-block}
html.js [data-split] .sp-i{transform:translateY(108%);transition:transform 1.25s var(--ease);transition-delay:calc(var(--i) * 80ms + var(--d,0ms))}
html.js [data-split].in .sp-i{transform:none}
.vwrap{position:relative;overflow:hidden}
.vwrap>img,.vwrap>video{position:absolute;inset:0}
.vwrap>video{opacity:0;transition:opacity 1.4s}
.vwrap>video.ready{opacity:1}
.pt{position:fixed;inset:0;z-index:9500;pointer-events:none;visibility:hidden}
.pt-in{position:absolute;inset:0;background:var(--pt-bg);color:var(--pt-ink);display:grid;place-items:center;transform:translateY(100%)}
.pt-in span{display:flex;align-items:center;gap:14px;font:500 15px/1 var(--en);letter-spacing:.18em;opacity:0;transition:opacity .3s .25s}
.pt-in span::before{content:"";width:14px;height:14px;background:var(--hl)}
.pt.enter,.pt.cover{visibility:visible;pointer-events:auto}
.pt.enter .pt-in{transform:none;transition:transform .7s cubic-bezier(.76,0,.24,1)}
.pt.enter .pt-in span,.pt.cover .pt-in span{opacity:1}
.pt.cover .pt-in{transform:none;transition:none}
.pt.cover.leave .pt-in{transform:translateY(-100%);transition:transform .8s cubic-bezier(.76,0,.24,1) .1s}
.pt.cover.leave .pt-in span{opacity:0;transition:opacity .2s}
html.pt-pending::before{content:"";position:fixed;inset:0;z-index:9600;background:var(--pt-bg)}

/* ── 손글씨 (assets/hand.js) ── */
.hw{display:block;overflow:visible;fill:none;stroke:var(--pen);stroke-width:4.3;stroke-linecap:round;stroke-linejoin:round;width:calc(var(--w) * var(--u,.4px));max-width:100%;height:auto}
.hw path{stroke-dasharray:1 1;stroke-dashoffset:1;opacity:0}
.hw path.d{stroke-width:7}
.hw path.f{fill:var(--pen);fill-opacity:0}
.hw path.hlp{stroke:var(--hl);stroke-opacity:.72;stroke-width:34;stroke-linecap:butt;mix-blend-mode:multiply}
[data-write].in .hw path{opacity:1;stroke-dashoffset:0;transition:stroke-dashoffset var(--du) linear var(--dl),opacity 0s linear var(--dl),fill-opacity .25s linear calc(var(--dl) + var(--du))}
[data-write].in .hw path.f{fill-opacity:1}
.hw-note{opacity:0;transform:translateY(6px);transition:opacity .7s var(--ease),transform .7s var(--ease);transition-delay:var(--dl,0ms)}
[data-write].in .hw-note{opacity:1;transform:none}
html:not(.js) .hw path{opacity:1;stroke-dashoffset:0} html:not(.js) .hw path.f{fill-opacity:1} html:not(.js) .hw-note{opacity:1;transform:none}

/* ── 공책: 모눈은 여기에서만 (종이 한 장, 바닥에 놓인 물건처럼) ── */
.nb{position:relative;background-color:var(--sheet);background-image:linear-gradient(rgba(15,30,61,.085) 1px,transparent 1px),linear-gradient(90deg,rgba(15,30,61,.085) 1px,transparent 1px),linear-gradient(rgba(15,30,61,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(15,30,61,.04) 1px,transparent 1px);background-size:120px 120px,120px 120px,24px 24px,24px 24px;background-position:-1px -1px;box-shadow:0 1px 1px rgba(15,30,61,.06),0 28px 50px -36px rgba(15,30,61,.4);padding:26px 30px 26px}
.nb .q{font-size:14px;color:var(--ink-2);margin-bottom:12px;line-height:1.7}
.nb .q .mth{font-size:16.5px;color:var(--ink)}
.nb .nb-h{display:flex;justify-content:space-between;align-items:baseline;gap:12px;font-size:13px;color:var(--ink-2);padding-bottom:12px;margin-bottom:14px;border-bottom:1px solid var(--line-2)}
.nb .nb-h .num{color:var(--ink);font-size:14px}

/* ── 페이지 첫 화면 (하위 페이지 공통): 화면 가득 사진 · 영상 ── */
.p-hero{position:relative;min-height:min(90svh,960px);padding-top:var(--hd);color:#fff;background:var(--navy);overflow:hidden;display:flex}
.p-hero .ph,.p-hero .vwrap{position:absolute;inset:0;background:var(--navy-2)}
.p-hero .ph::after{display:none}
.p-hero .ph>img,.p-hero .vwrap>img,.p-hero .vwrap>video{transform:scale(1.08);transition:transform 2.8s var(--ease),opacity 1.4s}
.ready .p-hero .ph>img,.ready .p-hero .vwrap>img,.ready .p-hero .vwrap>video{transform:none}
.p-hero::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(90deg,rgba(9,18,42,.82) 0%,rgba(9,18,42,.5) 40%,rgba(9,18,42,.08) 74%),linear-gradient(180deg,rgba(9,18,42,.4) 0%,rgba(9,18,42,0) 24%,rgba(9,18,42,0) 52%,rgba(9,18,42,.72) 100%)}
.p-hero-in{position:relative;z-index:2;width:100%;display:flex;flex-direction:column;justify-content:flex-end;padding-top:clamp(60px,10vh,120px);padding-bottom:clamp(32px,5vh,60px)}
.crumb{display:flex;gap:12px;align-items:baseline;font-size:14px;color:rgba(255,255,255,.76);margin-bottom:clamp(18px,3vh,32px)}
.crumb a{border-bottom:1px solid rgba(255,255,255,.34)}
.crumb .n{font:400 15px/1 var(--en);color:#fff;letter-spacing:.04em}
.p-ttl{font-size:clamp(54px,8.2vw,140px);font-weight:700;line-height:1.02;letter-spacing:-.065em;margin-left:-.05em}
.p-ttl .lt{font-weight:200;letter-spacing:-.055em}
.p-row{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-top:clamp(26px,4vh,48px);padding-top:24px;border-top:1px solid rgba(255,255,255,.28)}
.p-row p{max-width:34em;font-size:clamp(16px,1.18vw,18px);line-height:1.85;color:rgba(255,255,255,.9)}
.p-row .facts{display:flex;gap:clamp(24px,3.4vw,56px);flex:none}
.p-row .facts div{display:grid;gap:6px}
.p-row .facts b{font:400 clamp(32px,2.8vw,46px)/1 var(--en);letter-spacing:-.01em}
.p-row .facts b small{font:500 14px/1 var(--kr);margin-left:3px}
.p-row .facts span{font-size:13px;color:rgba(255,255,255,.74)}
html.js .p-hero .pf{opacity:0;transform:translateY(22px);transition:opacity 1.2s var(--ease),transform 1.3s var(--ease);transition-delay:var(--d,0ms)}
html.js .ready .p-hero .pf{opacity:1;transform:none}

/* ── 큰 숫자 목록 (원칙 · 단계) ── */
.nums{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));column-gap:var(--gap)}
.nums li{display:grid;gap:14px;align-content:start;padding-top:28px;border-top:1px solid var(--line-2)}
.nums .num{font-size:clamp(52px,5vw,84px);line-height:.86;letter-spacing:-.02em}
.nums h3{margin-top:14px;font-size:clamp(21px,1.7vw,26px);font-weight:650;letter-spacing:-.05em;line-height:1.35}
.nums p{font-size:15.5px;line-height:1.85;color:var(--ink-2);max-width:24em}
.dark .nums li{border-color:var(--line-d2)} .dark .nums p{color:var(--on-d2)}

/* ── 표: 선 하나로 ── */
.tbl{width:100%;border-collapse:collapse;font-size:15px}
.tbl th,.tbl td{padding:18px 12px 18px 0;text-align:left;vertical-align:baseline;border-bottom:1px solid var(--line)}
.tbl thead th{padding:0 12px 14px 0;font-size:13px;font-weight:600;color:var(--ink-2);border-bottom:1px solid var(--ink)}
.tbl .r{text-align:right;padding-right:0}
.tbl tbody th{font-weight:650;letter-spacing:-.03em}
.tbl .num{font-size:16px}

/* ── 주간 리포트 (홈 · 수업 방식) : 인쇄한 종이 한 장 ── */
.rep-doc{background:#fff;box-shadow:0 1px 1px rgba(15,30,61,.06),0 40px 70px -50px rgba(15,30,61,.45);padding:clamp(26px,3vw,48px)}
.rd-h{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;padding-bottom:22px;border-bottom:2px solid var(--ink)}
.rd-h .brand-s{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:-.02em}
.rd-h .brand-s i{width:9px;height:9px;background:var(--ink)}
.rd-h h3{margin-top:14px;font-size:clamp(23px,2vw,30px);font-weight:650;letter-spacing:-.05em;line-height:1.25}
.rd-h h3 small{display:block;font-size:14px;font-weight:500;color:var(--ink-2);letter-spacing:-.02em;margin-top:8px}
.rd-h dl{display:grid;grid-template-columns:repeat(var(--k,3),auto);gap:2px 26px;text-align:right;flex:none}
.rd-h dl div{display:grid;gap:4px}
.rd-h dt{font-size:13px;color:var(--ink-2)}
.rd-h dd{font-size:15px;font-weight:600}
.rd-h dd .num{font-size:24px;font-weight:400}
.rd-sec{margin-top:28px}
.rd-sec>h4{display:flex;justify-content:space-between;align-items:baseline;gap:12px;font-size:14px;font-weight:650;margin-bottom:14px}
.rd-sec>h4 span{font-size:13px;font-weight:500;color:var(--mute)}
.bars{display:grid;gap:12px}
.bars li{display:grid;grid-template-columns:minmax(0,9.6em) minmax(0,1fr) 46px 36px;gap:14px;align-items:center;font-size:14px}
.bars li>span:first-child{letter-spacing:-.03em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bars .tr{position:relative;height:10px;background:var(--mist)}
.bars .tr i{position:absolute;left:0;top:0;bottom:0;width:var(--v);background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform 1.3s var(--io);transition-delay:calc(var(--k) * 90ms + 200ms)}
.bars .tr i.lo{background:var(--hl)}
.bars .tr u{position:absolute;top:-4px;bottom:-4px;width:1.5px;background:var(--ink-2);left:var(--avg);opacity:.6}
.in .bars .tr i,.bars.in .tr i{transform:none}
.bars .pv{font-size:16px;text-align:right}
.bars .d{font-size:13px;text-align:right;color:var(--ink-2)}
.rd-kinds{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line)}
.rd-kinds li{display:grid;gap:4px;padding:14px 0 4px}
.rd-kinds li+li{padding-left:16px;border-left:1px solid var(--line)}
.rd-kinds b{font:400 30px/1 var(--en)}
.rd-kinds span{font-size:13px;color:var(--ink-2)}
.rd-c{margin-top:28px;padding-top:20px;border-top:1px solid var(--line);font-size:15px;line-height:1.85}
.rd-c h4{font-size:14px;font-weight:650;margin-bottom:8px}
.rd-c p+p{margin-top:8px}
.rd-c .sig{display:flex;justify-content:flex-end;font-size:13.5px;color:var(--ink-2)}
.rep-doc .foot-n{margin-top:18px}

/* ── 자주 묻는 질문 ── */
.faq{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:var(--gap)}
.faq-h{grid-column:1/5;display:grid;gap:24px;align-content:start}
.faq-l{grid-column:6/13;border-top:1px solid var(--ink)}
.qa{border-bottom:1px solid var(--line-2)}
.qa button{width:100%;display:grid;grid-template-columns:52px minmax(0,1fr) 28px;align-items:baseline;gap:12px;padding:28px 0;text-align:left;font-size:clamp(17px,1.35vw,20.5px);font-weight:550;letter-spacing:-.04em}
.qa button .num{font-size:15px;color:var(--mute);font-weight:400}
.pm{position:relative;width:28px;height:28px;align-self:center}
.pm::before,.pm::after{content:"";position:absolute;left:6px;right:6px;top:50%;height:1.5px;background:currentColor;transition:transform .6s var(--ease)}
.pm::after{transform:rotate(90deg)}
.qa.open .pm::after{transform:rotate(0)}
.qa .ans{display:grid;grid-template-rows:0fr;transition:grid-template-rows .7s var(--ease)}
.qa.open .ans{grid-template-rows:1fr}
.qa .ans>div{overflow:hidden}
.qa .ans p{padding:0 56px 30px 64px;font-size:16px;color:var(--ink-2);line-height:1.9}

/* ── 마지막 신청 (남색 + 사진 반쪽) ── */
.cta{position:relative;background:var(--navy);color:var(--on-d);overflow:hidden}
.cta-g{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.82fr);min-height:min(92vh,880px)}
.cta-t{display:flex;flex-direction:column;justify-content:center;gap:clamp(32px,4vw,56px);padding:var(--sec) clamp(28px,5vw,96px) var(--sec) max(var(--gut),calc((100vw - 1560px) / 2 + var(--gut)))}
.cta h2{font-size:clamp(42px,5.4vw,92px);font-weight:700;line-height:1.08;letter-spacing:-.062em}
.cta h2 .lt{font-weight:250}
.cta-t>p{font-size:clamp(16px,1.2vw,18px);line-height:1.9;color:var(--on-d2)}
.cta .ph{min-height:420px;background:var(--navy-2)}
.cta .ph::after{background:linear-gradient(90deg,rgba(15,30,61,.35),rgba(15,30,61,0) 40%)}
.cta-list{display:grid;border-top:1px solid var(--line-d2);max-width:520px}
.cta-list li{display:flex;justify-content:space-between;gap:16px;padding:14px 0;border-bottom:1px solid var(--line-d);font-size:15px}
.cta-list li span:last-child{color:var(--on-d2)}
.cta-list .num{font-size:17px;color:var(--on-d)}
.cta .btns{display:flex;gap:10px;flex-wrap:wrap}

/* ── 바닥글 ── */
.ft{position:relative;background:var(--navy-d);color:var(--on-d);padding:clamp(88px,9vw,150px) 0 0;overflow:hidden}
.ft-top{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:var(--gap);row-gap:44px;font-size:15px;line-height:1.95;color:var(--on-d2)}
.ft-top h4{margin:0 0 14px;font:500 15px/1 var(--en);font-variant-caps:all-small-caps;letter-spacing:.12em;color:var(--on-d)}
.ft-top .c1{grid-column:1/6}.ft-top .c2{grid-column:6/9}.ft-top .c3{grid-column:9/11}.ft-top .c4{grid-column:11/13}
.ft-top .c1 p{font-size:clamp(24px,2.2vw,34px);font-weight:600;letter-spacing:-.05em;line-height:1.42;color:var(--on-d)}
.ft-top .c1 p .lt{font-weight:250}
.ft-top .c1 .btn{display:inline-flex;margin-top:30px}
.ft-top a{display:block;width:fit-content;transition:color .3s}
.ft-top a:hover{color:var(--on-d)}
.ft-word{display:flex;align-items:flex-end;gap:.14em;margin-top:clamp(70px,8vw,130px);font:400 clamp(92px,21vw,360px)/.78 var(--en);letter-spacing:-.03em;color:var(--on-d);white-space:nowrap;margin-left:-.03em}
.ft-word .w{display:inline-block}
.ft-word i{display:block;flex:none;width:.4em;height:.4em;background:var(--hl);margin-bottom:.035em}
html.js .ft-word .w,html.js .ft-word i{opacity:0;transform:translateY(30%);transition:transform 1.5s var(--ease),opacity 1.5s var(--ease)}
html.js .ft-word i{transform:scale(.2);transform-origin:50% 100%;transition-delay:.45s}
html.js .ft-word.in .w,html.js .ft-word.in i{opacity:1;transform:none}
.ft-bot{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px 32px;margin-top:clamp(28px,3vw,48px);padding:22px 0 calc(26px + env(safe-area-inset-bottom));border-top:1px solid var(--line-d);font-size:13px;line-height:1.8;color:var(--on-d2)}
.ft-bot .biz{display:flex;flex-wrap:wrap;gap:0 18px}
.ft-bot .demo{max-width:56em}
.ft-bot .demo b{color:var(--hl);font-weight:600}

/* 모바일 아래 띠 */
.mbar{display:none}

/* ── 반응형 ── */
@media (max-width:1180px){
  .nav{display:none}
  .hd-r{margin-left:auto}
  .burger{display:block}
  .ft-top .c1{grid-column:1/-1}.ft-top .c2{grid-column:1/7}.ft-top .c3{grid-column:7/10}.ft-top .c4{grid-column:10/13}
  .sh .ttl{grid-column:1/-1}.sh .lead{grid-column:1/10}
  .faq-h,.faq-l{grid-column:1/-1}.faq-l{margin-top:40px}
  .cta-g{grid-template-columns:1fr}
  .cta-t{padding:var(--sec) var(--gut) clamp(56px,8vw,96px)}
  .cta .ph{aspect-ratio:16/9;min-height:0}
}
@media (min-width:1181px){.mnav{display:none}}
@media (max-width:820px){
  :root{--hd:64px;--sec:clamp(88px,22vw,120px)}
  body{font-size:16px}
  .br-m{display:inline}
  .br-d{display:none}
  .hd .btn,.hd-tel{display:none}
  .brand b{font-size:17.5px}
  .brand svg{width:27px;height:27px}
  .rh{margin-bottom:44px;font-size:13.5px}
  .rh .en{font-size:14px}
  .ttl{font-size:clamp(32px,9vw,44px);line-height:1.2}
  .sh{margin-bottom:48px;row-gap:20px}
  .sh .lead{grid-column:1/-1}
  .band .ph{height:auto;aspect-ratio:4/5}
  .cap,.band .cap{display:block}
  .cap .fig{display:inline;margin-right:10px}
  .cap .r{display:none}
  .nums{grid-template-columns:1fr;row-gap:44px}
  .nums .num{font-size:52px}
  .qa button{grid-template-columns:34px minmax(0,1fr) 24px;padding:22px 0;font-size:17px}
  .qa .ans p{padding:0 0 24px 46px;font-size:15.5px}
  .ft-top .c2,.ft-top .c3,.ft-top .c4{grid-column:1/-1}
  .ft-top .c1 p{font-size:24px}
  .ft-word{font-size:25vw}
  .ft-bot{padding-bottom:calc(92px + env(safe-area-inset-bottom))}
  .p-hero{min-height:88svh}
  .p-hero-in{padding-top:clamp(120px,22vh,200px);padding-bottom:28px}
  .p-ttl{font-size:clamp(46px,13vw,62px);line-height:1.08}
  .p-hero::after{background:linear-gradient(180deg,rgba(9,18,42,.45) 0%,rgba(9,18,42,.1) 26%,rgba(9,18,42,.35) 50%,rgba(9,18,42,.9) 100%)}
  .p-row{flex-direction:column;align-items:flex-start;gap:24px}
  .p-row .facts{width:100%;justify-content:space-between}
  .p-row .facts b{font-size:30px}
  .rep-doc{margin:0 calc(var(--gut) * -1);padding:26px var(--gut)}
  .rd-h{flex-direction:column;gap:16px}
  .rd-h dl{text-align:left;width:100%;justify-content:space-between}
  .bars li{grid-template-columns:minmax(0,7.4em) minmax(0,1fr) 40px 32px;gap:8px;font-size:13px}
  .bars .pv{font-size:15px}
  .rd-kinds b{font-size:26px}
  .rd-kinds li+li{padding-left:10px}
  .cta h2{font-size:clamp(36px,10.4vw,48px);line-height:1.14}
  .cta .ph{aspect-ratio:4/3}
  .mbar{display:grid;grid-template-columns:1fr 1fr 1.5fr;position:fixed;left:0;right:0;bottom:0;z-index:50;padding:8px 10px calc(8px + env(safe-area-inset-bottom));gap:6px;background:var(--navy);box-shadow:0 -1px 0 var(--line-d);transform:translateY(105%);transition:transform .7s var(--ease)}
  .mbar.on{transform:none}
  .mbar a{display:flex;align-items:center;justify-content:center;gap:7px;height:48px;border-radius:2px;color:var(--on-d);font-size:14.5px;font-weight:550}
  .mbar a svg{width:17px;height:17px}
  .mbar a.pri{background:var(--hl);color:var(--navy);font-weight:700}
}
/* 애니메이션 줄이기: 움직임 없이도 처음부터 완성된 정지 화면 */
@media (prefers-reduced-motion:reduce){
  html:not(.motion-on) *,html:not(.motion-on) *::before,html:not(.motion-on) *::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;transition-delay:0ms!important}
  html:not(.motion-on).js [data-split] .sp-i{transform:none;transition:none}
  html:not(.motion-on).js [data-r],html:not(.motion-on).js .p-hero .pf,html:not(.motion-on).js .hf{opacity:1;transform:none}
  html:not(.motion-on).js [data-lines] .ln>span{transform:none}
  html:not(.motion-on).js [data-reveal]{clip-path:none}
  html:not(.motion-on).js [data-reveal]>img,html:not(.motion-on) .p-hero .ph>img,html:not(.motion-on) .p-hero .vwrap>img{transform:none}
  html:not(.motion-on) .hl{background-size:100% 100%}
  html:not(.motion-on).js .ft-word .w,html:not(.motion-on).js .ft-word i{opacity:1;transform:none}
  html:not(.motion-on) .hw path{opacity:1;stroke-dashoffset:0}
  html:not(.motion-on) .hw path.f{fill-opacity:1}
  html:not(.motion-on) .hw-note{opacity:1;transform:none}
  html:not(.motion-on) .bars .tr i{transform:none}
}