/* ============================================================
   VoQuiz 소개 사이트 — 스크롤 스크럽 · 모던
   ============================================================ */
:root{
    --black:#000;
    --ink:#0a0a0b;
    --ink-2:#6e6e73;
    --light:#fbfbfd;
    --gray:#f5f5f7;
    --line:rgba(0,0,0,.09);
    --blue:#0071e3;
    --blue-2:#2979ff;
    --violet:#6c5ce7;
    --green:#22c55e;
    --red:#ef4444;
    --maxw:1040px;
    --ease:cubic-bezier(.16,1,.3,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
    background:var(--light);color:var(--ink);
    font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text",
        "Apple SD Gothic Neo","Pretendard","Noto Sans KR",sans-serif;
    -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
    letter-spacing:-.02em;line-height:1.5;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul,ol{list-style:none}

/* 스크롤 진행 바 */
#progress{
    position:fixed;top:0;left:0;height:2px;width:100%;z-index:200;transform:scaleX(0);transform-origin:0 50%;
    background:linear-gradient(90deg,var(--blue-2),var(--violet),#ff9f43);
}
/* 미세 그레인 — 화면 전체에 얇게 */
.grain{
    position:fixed;inset:0;z-index:150;pointer-events:none;opacity:.035;mix-blend-mode:multiply;
    background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- 등장 ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}
/* 줄 단위 마스크 등장 */
.lines span{display:block;overflow:hidden}
.lines i{display:block;font-style:normal;transform:translateY(115%);transition:transform 1s var(--ease)}
.lines span:nth-child(2) i{transition-delay:.09s}
.lines.in i{transform:none}

/* ============ NAV ============ */
#nav{
    position:fixed;top:0;left:0;right:0;z-index:100;height:52px;
    background:rgba(251,251,253,.7);backdrop-filter:saturate(180%) blur(20px);
    -webkit-backdrop-filter:saturate(180%) blur(20px);
    border-bottom:1px solid transparent;transition:border-color .3s,background .3s;
}
#nav.scrolled{border-bottom-color:rgba(0,0,0,.07)}
#nav.dark{background:rgba(10,10,11,.6);border-bottom-color:rgba(255,255,255,.08)}
#nav.dark .nav-links a{color:#f5f5f7}
/* 로고는 밝은 곳/어두운 곳 모두 잘 보이므로 다크 섹션에서도 그대로 둔다 */
.nav-inner{max-width:var(--maxw);margin:0 auto;height:100%;padding:0 22px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.nav-logo img{height:26px;transition:filter .3s}
.nav-links{display:flex;gap:28px}
.nav-links a{font-size:.79rem;opacity:.85;transition:opacity .2s}
.nav-links a:hover{opacity:.5}
.nav-cta{font-size:.79rem;background:var(--blue);color:#fff;padding:6px 14px;border-radius:980px;transition:.25s var(--ease)}
.nav-cta:hover{background:#0077ed;transform:scale(1.04)}

/* ============ HERO — 스크롤 스크럽 ============ */
.hero{height:230vh;position:relative}
.hero-aurora{
    position:absolute;top:0;left:50%;transform:translateX(-50%);
    width:1200px;height:900px;pointer-events:none;
    background:
        radial-gradient(closest-side,rgba(41,121,255,.22),transparent 70%),
        radial-gradient(closest-side,rgba(108,92,231,.20),transparent 70%),
        radial-gradient(closest-side,rgba(255,159,67,.10),transparent 70%);
    background-position:28% 34%,72% 48%,52% 68%;background-repeat:no-repeat;
    background-size:66% 66%,58% 58%,44% 44%;filter:blur(24px);
    animation:drift 16s ease-in-out infinite alternate;
}
@keyframes drift{to{transform:translateX(-50%) scale(1.14) rotate(7deg)}}
.hero-sticky{
    position:sticky;top:0;height:100vh;display:flex;flex-direction:column;
    align-items:center;justify-content:center;text-align:center;overflow:hidden;padding:0 22px;
}
.hero-copy{position:relative;z-index:2;max-width:820px;will-change:transform,opacity}
.eyebrow{font-size:1.1rem;font-weight:600;color:var(--blue);margin-bottom:10px;letter-spacing:0}
.hero-title{
    font-size:clamp(2.9rem,7.8vw,5.8rem);font-weight:700;line-height:1.02;
    letter-spacing:-.04em;margin-bottom:20px;
    background:linear-gradient(180deg,#0a0a0b 42%,#55555e);
    -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:clamp(1.02rem,2vw,1.35rem);color:var(--ink-2);line-height:1.5;margin-bottom:28px}
.hero-cta{display:flex;gap:24px;align-items:center;justify-content:center;flex-wrap:wrap}
.btn-primary{background:var(--blue);color:#fff;padding:12px 26px;border-radius:980px;font-size:1rem;font-weight:500;transition:.25s var(--ease)}
.btn-primary:hover{background:#0077ed;transform:scale(1.045)}
.btn-primary.lg{padding:15px 34px;font-size:1.08rem}
.btn-link{color:var(--blue);font-size:1rem;transition:.2s}
.btn-link:hover{opacity:.6}

/* 히어로 기기 — 스크롤에 따라 펴지고 커진다 */
.hero-device{
    position:absolute;left:50%;bottom:-42vh;width:min(960px,92vw);
    transform:translateX(-50%);perspective:1800px;z-index:1;will-change:transform;
}
.window{
    border-radius:18px;overflow:hidden;background:#0f1420;
    box-shadow:0 60px 120px -24px rgba(15,25,55,.5),0 0 0 1px rgba(0,0,0,.05);
    transform:rotateX(var(--rx,26deg)) scale(var(--sc,.92));transform-origin:center bottom;
    will-change:transform;
}
.window-bar{height:28px;background:#161c2c;display:flex;align-items:center;gap:6px;padding:0 12px}
.window-bar span{width:9px;height:9px;border-radius:50%;background:#3a3a3c}
.window-bar span:nth-child(1){background:#ff5f57}
.window-bar span:nth-child(2){background:#febc2e}
.window-bar span:nth-child(3){background:#28c840}
.window-body{padding:22px;text-align:left;color:#e7ebf3}
.mock-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.mock-greet{font-size:1rem;font-weight:600}
.mock-greet b{color:#5b9dff}
.mock-chip{font-size:.62rem;font-weight:700;background:linear-gradient(135deg,#a78bfa,#7c3aed);color:#fff;padding:3px 10px;border-radius:20px}
.mock-kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:12px}
.mock-kpi{background:#1a2032;border-radius:11px;padding:12px;text-align:center}
.mock-kpi b{display:block;font-size:1.25rem;font-weight:800}
.mock-kpi i{font-size:.7rem;font-style:normal}
.mock-kpi span{font-size:.6rem;color:#8b93a7}
.mock-panels{display:grid;grid-template-columns:1.25fr 1fr;gap:10px}
.mock-card{background:#1a2032;border-radius:11px;padding:14px}
.mock-card-t{font-size:.7rem;color:#8b93a7;margin-bottom:8px}
.mock-chart{width:100%;height:80px}
.spark{stroke-dasharray:420;stroke-dashoffset:420;animation:draw 1.8s .6s var(--ease) forwards}
@keyframes draw{to{stroke-dashoffset:0}}
.mock-bar{display:flex;height:7px;border-radius:20px;overflow:hidden;margin-bottom:7px}
.mock-bar i{display:block}
.mock-legend{display:flex;gap:9px;font-size:.55rem;color:#8b93a7;margin-bottom:10px}
.mock-words div{display:flex;justify-content:space-between;font-size:.63rem;padding:4px 0;border-bottom:1px solid #2c3448}
.mock-words em{color:#8b93a7;font-style:normal}

/* ============ 공통 ============ */
.sec{padding:130px 22px}
.sec-inner{max-width:var(--maxw);margin:0 auto;text-align:center}
.sec-inner.narrow{max-width:760px}
.sec-inner.wide{max-width:1180px}
.sec-dark{background:var(--black);color:#f5f5f7}
.sec-dark .sec-sub{color:#a1a1a6}
.sec-gray{background:var(--gray)}
.kicker{font-size:.92rem;font-weight:600;color:var(--blue);margin-bottom:12px}
.sec-dark .kicker{color:#2997ff}
.sec-title{font-size:clamp(2.1rem,5.4vw,4.1rem);font-weight:700;line-height:1.05;letter-spacing:-.035em;margin-bottom:18px}
.sec-title.left{text-align:left}
.sec-sub{font-size:clamp(1rem,1.7vw,1.22rem);color:var(--ink-2);line-height:1.55;margin-bottom:56px}
.caption{font-size:.8rem;color:var(--ink-2);margin-top:16px}

/* 지표 */
.strip{background:var(--gray);padding:70px 22px;position:relative;z-index:2}
.strip-inner{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat b{display:block;font-size:clamp(1.9rem,4vw,3rem);font-weight:700;letter-spacing:-.04em;
    background:linear-gradient(135deg,var(--blue-2),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{font-size:.8rem;color:var(--ink-2)}

/* ============ PINNED — 작동 방식 ============ */
.pin{height:340vh;background:var(--black);color:#f5f5f7;position:relative}
.pin-sticky{position:sticky;top:0;height:100vh;display:flex;align-items:center;padding:0 22px;overflow:hidden}
.pin-grid{max-width:1180px;margin:0 auto;width:100%;display:grid;grid-template-columns:.85fr 1fr;gap:60px;align-items:center}
.pin-left{text-align:left}
.pin-title{font-size:clamp(2rem,4vw,3.2rem);font-weight:700;line-height:1.06;letter-spacing:-.035em;margin-bottom:36px}
.steps{display:flex;flex-direction:column;gap:8px}
.step{display:grid;grid-template-columns:auto 1fr;gap:16px;padding:18px 0 20px;position:relative;opacity:.32;transition:opacity .5s var(--ease)}
.step.active{opacity:1}
.s-num{font-size:.72rem;font-weight:700;color:#2997ff;letter-spacing:.08em;padding-top:4px}
.step h3{font-size:1.25rem;font-weight:600;margin-bottom:5px}
.step p{font-size:.88rem;color:#a1a1a6;line-height:1.6;max-width:340px}
.s-rail{position:absolute;left:0;right:0;bottom:0;height:2px;background:rgba(255,255,255,.12);border-radius:2px;overflow:hidden}
.s-rail i{display:block;height:100%;width:0;background:linear-gradient(90deg,#2997ff,#a78bfa);border-radius:2px}

.pin-right{position:relative;height:min(62vh,520px)}
.stage{position:absolute;inset:0}
.scene{
    position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;
    opacity:0;transform:translateY(24px) scale(.97);transition:opacity .6s var(--ease),transform .6s var(--ease);
    pointer-events:none;
}
.scene.active{opacity:1;transform:none;pointer-events:auto}

/* 장면 1 */
.paper{width:min(300px,80%);background:#fff;border-radius:12px;padding:16px;position:relative;overflow:hidden;
    box-shadow:0 24px 60px -12px rgba(0,0,0,.55);transform:rotate(-1.4deg)}
.paper-line{display:flex;justify-content:space-between;gap:8px;padding:7px 0;border-bottom:1px solid #eee;font-size:.72rem;color:#1d1d1f}
.paper-line em{color:#86868b;font-style:normal}
.paper-line.dim{opacity:.35}
.paper-scan{position:absolute;left:0;right:0;height:38%;top:-40%;
    background:linear-gradient(180deg,transparent,rgba(41,121,255,.3),transparent)}
.scene.active .paper-scan{animation:scan 2.4s ease-in-out infinite}
@keyframes scan{0%{top:-40%}100%{top:105%}}
.chiplist{display:flex;flex-direction:column;gap:7px;width:min(330px,86%)}
.chip{display:flex;align-items:center;gap:10px;background:#1c1c1e;border:1px solid #2c2c2e;border-radius:11px;padding:10px 13px;
    opacity:0;transform:translateY(10px)}
.scene.active .chip{animation:chipIn .5s var(--ease) forwards}
.scene.active .chip:nth-child(2){animation-delay:.12s}
.scene.active .chip:nth-child(3){animation-delay:.24s}
@keyframes chipIn{to{opacity:1;transform:none}}
.chip b{font-size:.8rem;min-width:74px}
.chip span{font-size:.7rem;color:#a1a1a6;flex:1}
.chip i{font-size:.58rem;color:#2997ff;font-style:normal;background:rgba(41,151,255,.14);padding:2px 7px;border-radius:20px}

/* 장면 2 */
.gen{width:min(430px,92%);background:#1c1c1e;border:1px solid #2c2c2e;border-radius:18px;padding:20px;text-align:left}
.gen-head{font-size:.78rem;color:#a1a1a6;display:flex;align-items:center;gap:8px;margin-bottom:10px}
.dot-live{width:7px;height:7px;border-radius:50%;background:#2997ff}
.scene.active .dot-live{animation:pulse 1.2s infinite}
@keyframes pulse{50%{opacity:.25;transform:scale(.75)}}
.gen-bar{height:4px;background:#2c2c2e;border-radius:20px;overflow:hidden;margin-bottom:14px}
.gen-bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,#2997ff,#a78bfa);border-radius:20px}
.scene.active .gen-bar i{animation:fill 2.2s var(--ease) forwards}
@keyframes fill{to{width:100%}}
.gen-list{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.gen-row{display:flex;justify-content:space-between;font-size:.74rem;background:#2c2c2e;border-radius:8px;padding:8px 11px}
.gen-row em{color:#8b93a7;font-style:normal}
.gen-out{background:#0f1420;border:1px solid #2c3448;border-radius:12px;padding:14px}
.gen-out p{font-size:.8rem;line-height:1.6;margin-bottom:10px}
.gen-out u{text-decoration:none;border-bottom:2px solid #2997ff;padding:0 10px}
.gen-opts{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.gen-opts span{font-size:.72rem;background:#1a2032;border:1px solid #2c3448;border-radius:7px;padding:7px 9px;color:#a1a1a6}
.gen-opts .ok{border-color:var(--green);color:#4ade80;background:rgba(34,197,94,.1);font-weight:600}

/* 장면 3 */
.result{width:min(400px,92%);text-align:center}
.ring{position:relative;width:150px;height:150px;margin:0 auto 20px}
.ring svg{width:100%;height:100%;transform:rotate(-90deg)}
.ring circle{fill:none;stroke-width:9;stroke-linecap:round}
.ring-bg{stroke:#2c2c2e}
.ring-fg{stroke:url(#none);stroke:#2997ff;stroke-dasharray:327;stroke-dashoffset:327}
.scene.active .ring-fg{animation:ringIn 1.4s .2s var(--ease) forwards}
@keyframes ringIn{to{stroke-dashoffset:calc(327 - 327 * var(--p) / 100)}}
.ring b{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:2.1rem;font-weight:800;letter-spacing:-.03em}
.ring b i{font-size:.9rem;font-style:normal}
.res-rows{display:flex;flex-direction:column;gap:6px;margin-bottom:14px;text-align:left}
.res-row{display:flex;justify-content:space-between;background:#1c1c1e;border:1px solid #2c2c2e;border-radius:9px;padding:9px 13px;font-size:.78rem}
.res-row.ok em{color:#4ade80}
.res-row.no em{color:#ff6b6b}
.res-row em{font-style:normal;font-weight:600}
.res-note{font-size:.74rem;color:#8b93a7;line-height:1.6}

/* ============ EXAM ============ */
.fmt-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin-bottom:48px}
.fmt{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 12px;transition:.35s var(--ease)}
.fmt:hover{transform:translateY(-5px);box-shadow:0 18px 40px -12px rgba(0,0,0,.14)}
.fmt b{display:block;font-size:.86rem;margin-bottom:4px}
.fmt span{font-size:.69rem;color:var(--ink-2)}
.qcard{background:#fff;border:1px solid var(--line);border-radius:22px;padding:30px;text-align:left;box-shadow:0 34px 80px -30px rgba(0,0,0,.22)}
.qcard-q{font-size:1.05rem;font-weight:500;line-height:1.55;margin-bottom:20px}
.qcard-q i{color:var(--blue);font-style:normal;font-weight:700;margin-right:6px}
.qcard-q u{text-decoration:none;border-bottom:2px solid var(--blue);padding:0 12px}
.qopts{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:18px}
.qopt{border:1px solid var(--line);border-radius:11px;padding:12px 15px;font-size:.89rem}
.qopt.right{border-color:var(--green);background:rgba(34,197,94,.08);font-weight:600;display:flex;justify-content:space-between;align-items:center}
.qopt.right em{font-style:normal;font-size:.69rem;color:var(--green)}
.qexp{font-size:.84rem;color:var(--ink-2);background:var(--gray);border-radius:11px;padding:14px;line-height:1.6}

/* ============ LEARN ============ */
.learn-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:22px}
.lcard{background:#1c1c1e;border:1px solid #2c2c2e;border-radius:20px;padding:24px;text-align:left;transition:.4s var(--ease)}
.lcard:hover{transform:translateY(-6px);border-color:#3a3a3c}
.lcard h3{font-size:1.05rem;margin:18px 0 7px;font-weight:600}
.lcard p{font-size:.82rem;color:#a1a1a6;line-height:1.6}
.flip{height:120px;perspective:900px;cursor:pointer}
.flip-front,.flip-back{position:absolute;width:calc(100% - 48px);height:120px;border-radius:14px;
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
    backface-visibility:hidden;transition:transform .8s var(--ease)}
.flip-front{background:#2c2c2e;border:1px solid #3a3a3c}
.flip-front b{font-size:1.3rem}
.flip-front small,.flip-back small{font-size:.6rem;opacity:.6;padding:0 14px;text-align:center}
.flip-back{background:linear-gradient(135deg,#2979ff,#6c5ce7);transform:rotateY(180deg)}
.flip-back b{font-size:1.02rem}
.lcard:hover .flip-front{transform:rotateY(-180deg)}
.lcard:hover .flip-back{transform:rotateY(0)}
.tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;height:120px}
.tiles span{background:#2c2c2e;border:1px solid #3a3a3c;border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:.58rem;text-align:center;padding:4px;transition:.4s var(--ease)}
.tiles span.on{background:rgba(41,121,255,.2);border-color:var(--blue-2);color:#5b9dff}
.lcard:hover .tiles span.on{transform:scale(1.07)}
.modes{display:grid;grid-template-columns:1fr 1fr;gap:7px;height:120px;align-content:center}
.modes span{background:#2c2c2e;border:1px solid #3a3a3c;border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:.64rem;color:#d1d1d6;padding:6px 4px;text-align:center;transition:.4s var(--ease)}
.lcard:hover .modes span:nth-child(odd){border-color:var(--blue-2);color:#8fb8ff}
.srs{height:120px;display:flex;flex-direction:column;justify-content:center;gap:11px}
.srs-row{display:flex;align-items:center;gap:9px}
.srs-row span{font-size:.58rem;color:#8b93a7;width:26px}
.srs-row i{height:7px;border-radius:20px;background:linear-gradient(90deg,var(--blue-2),var(--violet));display:block}
.ai-check{display:grid;grid-template-columns:1.3fr 1fr;gap:20px;background:#1c1c1e;border:1px solid #2c2c2e;border-radius:20px;padding:26px;text-align:left;align-items:center}
.ai-label{font-size:.78rem;color:#a1a1a6;margin-bottom:9px}
.ai-input{background:#2c2c2e;border:1px solid #3a3a3c;border-radius:11px;padding:13px;font-size:.84rem;margin-bottom:12px}
.ai-fb{background:rgba(34,197,94,.1);border-left:3px solid var(--green);border-radius:9px;padding:13px}
.ai-fb b{font-size:.84rem}
.ai-fb p{font-size:.76rem;color:#a1a1a6;margin-top:5px;line-height:1.6}
.ai-side h3{font-size:1.22rem;margin-bottom:8px}
.ai-side p{font-size:.83rem;color:#a1a1a6;line-height:1.6;margin-bottom:12px}
.tag{font-size:.63rem;font-weight:700;background:linear-gradient(135deg,#a78bfa,#7c3aed);color:#fff;padding:4px 11px;border-radius:20px}

/* ============ PLANNER ============ */
.plan-wrap{display:grid;grid-template-columns:1.12fr 1fr;gap:18px;text-align:left}
.plan-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:0 26px 62px -30px rgba(0,0,0,.18)}
.plan-goal{display:flex;align-items:center;gap:13px;margin-bottom:18px}
.pg-ico{width:46px;height:46px;flex:none;display:flex;align-items:center;justify-content:center;font-size:1.35rem;background:linear-gradient(135deg,rgba(108,92,231,.16),rgba(41,121,255,.12));border-radius:14px}
.plan-goal b{display:block;font-size:.98rem}
.plan-goal span{font-size:.76rem;color:var(--ink-2)}
.plan-cal{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}
.cal-cell{aspect-ratio:1;background:var(--gray);border:1px solid var(--line);border-radius:10px;padding:6px 0 0;display:flex;flex-direction:column;align-items:center;gap:4px}
.cal-cell em{font-size:.62rem;font-style:normal;color:var(--ink-2);font-weight:600}
.cal-cell i{width:7px;height:7px;border-radius:50%;display:block}
.cal-cell.off{opacity:.4}
.cal-cell.today{border-color:var(--blue);box-shadow:0 0 0 2px rgba(0,113,227,.14)}
.d-new{background:var(--blue-2)}
.d-rev{background:#f59e0b}
.plan-legend{display:flex;align-items:center;gap:16px;margin-top:16px;font-size:.72rem;color:var(--ink-2);flex-wrap:wrap}
.plan-legend>span{display:flex;align-items:center;gap:6px}
.plan-legend i{width:8px;height:8px;border-radius:50%}
.off-note{color:#a1a1a6;margin-left:auto}
.pc-t{font-size:.92rem;font-weight:600;margin-bottom:12px}
.curve{width:100%;height:132px}
.cdots circle{fill:#6c5ce7;stroke:#fff;stroke-width:2}
.plan-iv{display:flex;justify-content:space-between;gap:6px;margin-top:10px}
.plan-iv span{font-size:.66rem;color:var(--ink-2);background:var(--gray);border-radius:20px;padding:4px 10px}
.plan-note{font-size:.76rem;color:var(--ink-2);line-height:1.6;margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}

/* ============ ACADEMY ============ */
.class-demo{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:0 34px 80px -30px rgba(0,0,0,.2);text-align:left}
.cd-head{display:flex;justify-content:space-between;align-items:center;padding:20px 24px;border-bottom:1px solid var(--line);flex-wrap:wrap;gap:10px}
.cd-head b{font-size:1.02rem}
.code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-weight:700;letter-spacing:2px;background:rgba(0,113,227,.1);color:var(--blue);padding:3px 10px;border-radius:8px;margin-left:10px;font-size:.78rem}
.cd-meta{font-size:.78rem;color:var(--ink-2)}
.cd-table{width:100%;border-collapse:collapse;font-size:.84rem}
.cd-table th,.cd-table td{padding:13px 24px;text-align:center;border-bottom:1px solid var(--line)}
.cd-table th{background:var(--gray);font-weight:600;font-size:.76rem;color:var(--ink-2)}
.cd-table td:first-child,.cd-table th:first-child{text-align:left;font-weight:600}
.cd-table tbody tr:last-child td{border-bottom:none}
.cd-table .hi{color:var(--green)}.cd-table .mid{color:var(--blue)}.cd-table .lo{color:var(--red)}
.cd-table .none{color:#c7c7cc;font-size:.76rem}
.two-up{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:24px;text-align:left}
.up{background:var(--gray);border-radius:18px;padding:26px}
.up h3{font-size:1.02rem;margin-bottom:7px}
.up p{font-size:.83rem;color:var(--ink-2);line-height:1.6}

/* ============ REPORT ============ */
.report-mock{background:#1c1c1e;border:1px solid #2c2c2e;border-radius:20px;padding:26px;text-align:left}
.rm-head{font-size:1rem;font-weight:600;margin-bottom:18px}
.rm-kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:18px}
.rm-kpis div{background:#2c2c2e;border-radius:11px;padding:14px;text-align:center}
.rm-kpis b{display:block;font-size:1.35rem;font-weight:800}
.rm-kpis span{font-size:.6rem;color:#8b93a7}
.rm-bar{display:flex;height:9px;border-radius:20px;overflow:hidden;margin-bottom:14px}
.rm-bar i{display:block}
.rm-weak{display:flex;gap:8px;flex-wrap:wrap}
.rm-weak span{font-size:.7rem;background:rgba(239,68,68,.14);color:#ff6b6b;padding:5px 12px;border-radius:20px}

/* ============ 소식 ============ */
.news-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:34px;gap:20px}
.news-head .kicker{text-align:left}
.news-nav{display:flex;gap:8px}
.nb{width:38px;height:38px;border-radius:50%;border:none;background:var(--gray);color:var(--ink);
    font-size:1.15rem;cursor:pointer;transition:.25s var(--ease);display:flex;align-items:center;justify-content:center}
.nb:hover{background:#e8e8ed;transform:scale(1.06)}
.nb:disabled{opacity:.35;cursor:default;transform:none}
.news-rail{
    display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 4px 24px;
    scrollbar-width:none;scroll-behavior:smooth;
}
.news-rail::-webkit-scrollbar{display:none}
.news-card{
    flex:0 0 320px;scroll-snap-align:start;background:#fff;border:1px solid var(--line);
    border-radius:20px;overflow:hidden;text-align:left;transition:.4s var(--ease);
}
.news-card:hover{transform:translateY(-6px);box-shadow:0 24px 54px -18px rgba(0,0,0,.18)}
.nc-visual{height:150px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.v1{background:linear-gradient(135deg,#2979ff,#6c5ce7)}
.v2{background:linear-gradient(135deg,#7c3aed,#a78bfa)}
.v3{background:linear-gradient(135deg,#ef4444,#f59e0b)}
.v4{background:linear-gradient(135deg,#22c55e,#2997ff)}
.v5{background:linear-gradient(135deg,#f59e0b,#ff5f57)}
.v6{background:linear-gradient(135deg,#6c5ce7,#2979ff)}
.v7{background:linear-gradient(135deg,#0ea5e9,#22c55e)}
.nc-mini{background:rgba(255,255,255,.16);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.25);
    border-radius:14px;padding:12px 18px;color:#fff;display:flex;align-items:center;gap:8px;font-size:.82rem}
.nc-mini b{font-weight:700}
.nc-mini span{opacity:.8;font-size:.72rem}
.nc-body{padding:20px}
.nc-tag{font-size:.62rem;font-weight:700;color:var(--ink-2);background:var(--gray);padding:3px 9px;border-radius:20px}
.nc-tag.new{background:rgba(0,113,227,.1);color:var(--blue)}
.nc-body h3{font-size:1.02rem;margin:11px 0 7px;line-height:1.35;letter-spacing:-.025em}
.nc-body p{font-size:.81rem;color:var(--ink-2);line-height:1.6;margin-bottom:12px}
.nc-body time{font-size:.72rem;color:#a1a1a6}

/* ============ PRICING ============ */
.price-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;align-items:start}
.price{background:#fff;border:1px solid var(--line);border-radius:22px;padding:28px 20px;text-align:left;position:relative;transition:.4s var(--ease)}
.price:hover{transform:translateY(-7px);box-shadow:0 30px 66px -20px rgba(0,0,0,.18)}
.price.feat{border-color:var(--blue);box-shadow:0 0 0 3px rgba(0,113,227,.1)}
.price.teach{background:linear-gradient(180deg,rgba(108,92,231,.07),#fff)}
.p-badge{position:absolute;top:-11px;left:20px;background:var(--blue);color:#fff;font-size:.62rem;font-weight:700;padding:4px 12px;border-radius:20px}
.p-badge.pro{background:linear-gradient(135deg,#a78bfa,#7c3aed)}
.p-name{font-size:1.02rem;font-weight:700;margin-bottom:6px}
.p-cost{font-size:1.75rem;font-weight:700;letter-spacing:-.04em;margin-bottom:20px}
.p-cost i{font-size:.82rem;font-style:normal;font-weight:500;color:var(--ink-2)}
.price ul{display:flex;flex-direction:column;gap:10px;margin-bottom:24px}
.price li{font-size:.79rem;color:var(--ink-2);padding-left:19px;position:relative;line-height:1.5}
.price li::before{content:"✓";position:absolute;left:0;color:var(--blue);font-weight:700}
.price li b{color:var(--ink)}
.p-btn{display:block;text-align:center;background:var(--blue);color:#fff;padding:12px;border-radius:980px;font-size:.85rem;font-weight:500;transition:.25s var(--ease)}
.p-btn:hover{background:#0077ed;transform:scale(1.03)}
.p-btn.ghost{background:var(--gray);color:var(--ink)}
.p-btn.ghost:hover{background:#e8e8ed}
.p-btn.teach{background:linear-gradient(135deg,#a78bfa,#7c3aed)}

/* 애드온 */
.addons{margin-top:26px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px 26px;text-align:left}
.ad-t{font-size:.82rem;font-weight:700;color:var(--ink-2)}
.ad-list{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:16px 0 6px}
.ad{background:var(--gray);border-radius:13px;padding:15px 17px;display:flex;flex-direction:column;gap:2px}
.ad b{font-size:.86rem}
.ad span{font-size:.72rem;color:var(--ink-2)}
.ad i{font-style:normal;font-weight:700;font-size:1rem;margin-top:6px}
.ad-note{font-size:.74rem;color:#a1a1a6;line-height:1.6;margin-top:8px}

/* ============ FINAL ============ */
.final{background:var(--black);color:#f5f5f7;padding:150px 22px;text-align:center;position:relative;overflow:hidden}
.final::before{content:"";position:absolute;inset:0;
    background:radial-gradient(closest-side,rgba(41,121,255,.24),transparent 70%) 50% 30%/70% 90% no-repeat}
.final-inner{position:relative;max-width:760px;margin:0 auto}
.final h2{font-size:clamp(2rem,5vw,3.6rem);font-weight:700;line-height:1.08;letter-spacing:-.035em;margin-bottom:34px}

/* ============ FOOTER ============ */
footer{background:var(--gray);padding:52px 22px;text-align:center}
.foot-inner{max-width:var(--maxw);margin:0 auto}
.foot-logo{height:26px;margin:0 auto 14px;opacity:.85}
.foot-inner p{font-size:.83rem;color:var(--ink-2);margin-bottom:8px}
.foot-inner small{font-size:.7rem;color:#a1a1a6}

/* ============ 반응형 ============ */
@media (max-width:1080px){
    .price-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:960px){
    .nav-links{display:none}
    .pin{height:auto}
    .pin-sticky{position:static;height:auto;padding:96px 22px}
    .pin-grid{grid-template-columns:1fr;gap:36px}
    .pin-right{height:440px}
    .step{opacity:1}
    .scene{position:relative;opacity:1;transform:none;pointer-events:auto}
    .scene:not(.active){display:none}
    .hero{height:auto}
    .hero-sticky{position:static;height:auto;padding:130px 22px 0}
    .hero-device{position:relative;left:auto;bottom:auto;transform:none;margin:48px auto 0;width:100%}
    .window{transform:none!important}
    .mock-panels{grid-template-columns:1fr}
    .fmt-grid{grid-template-columns:repeat(2,1fr)}
    .learn-grid,.two-up,.ai-check{grid-template-columns:1fr}
    .plan-wrap{grid-template-columns:minmax(0,1fr)}
    .plan-card{min-width:0}
    .plan-cal{grid-template-columns:repeat(7,minmax(0,1fr))}
    .cal-cell{padding-top:5px}.cal-cell em{font-size:.56rem}
    .price-grid{grid-template-columns:1fr}
    .ad-list{grid-template-columns:1fr}
    .strip-inner{grid-template-columns:repeat(2,1fr);gap:34px}
    .qopts{grid-template-columns:1fr}
    .sec{padding:96px 22px}
    .news-card{flex-basis:280px}
    /* 학원 성적표는 가로 스크롤로(열이 잘리지 않도록) */
    .class-demo{overflow-x:auto}
    .cd-table{min-width:460px}
}
@media (prefers-reduced-motion:reduce){
    *{animation:none!important;transition:none!important}
    /* 애니메이션으로 '나타나는' 요소들은 최종 상태로 고정 —
       그렇지 않으면 애니메이션을 끈 사용자에게 영영 보이지 않는다 */
    .reveal{opacity:1;transform:none}
    .lines i{transform:none}
    .scene{opacity:1;transform:none}
    .chip{opacity:1;transform:none}
    .gen-bar i{width:100%}
    .spark{stroke-dashoffset:0}
    .ring-fg{stroke-dashoffset:calc(327 - 327 * var(--p) / 100)}
    .paper-scan{display:none}
}

/* ============================================================
   관리자 편집 모드
   ============================================================ */
.admin-trigger{color:#c7c7cc;text-decoration:none;transition:color .2s}
.admin-trigger:hover{color:var(--blue)}

/* 오버레이 + 박스 */
.admin-overlay{position:fixed;inset:0;z-index:300;display:none;align-items:center;justify-content:center;
    background:rgba(10,10,15,.5);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);padding:20px}
.admin-overlay.show{display:flex}
.admin-overlay.high{z-index:320}
.admin-box{background:#fff;border-radius:20px;padding:26px;width:min(420px,100%);
    box-shadow:0 40px 100px -30px rgba(0,0,0,.5);animation:abIn .32s var(--ease)}
.admin-box.wide{width:min(600px,100%)}
@keyframes abIn{from{opacity:0;transform:translateY(14px) scale(.98)}to{opacity:1;transform:none}}
.admin-box h3{font-size:1.15rem;margin-bottom:4px}
.ab-sub{font-size:.82rem;color:var(--ink-2);margin-bottom:16px}
.admin-box input[type=password],.admin-box input[type=text],.ne-grid input,.ne-grid textarea{
    width:100%;border:1px solid var(--line);border-radius:11px;padding:11px 13px;font-size:.9rem;
    font-family:inherit;background:var(--gray);transition:.2s}
.admin-box input:focus,.ne-grid input:focus,.ne-grid textarea:focus{outline:none;border-color:var(--blue);background:#fff;box-shadow:0 0 0 3px rgba(0,113,227,.12)}
.ab-err{color:var(--red);font-size:.78rem;min-height:18px;margin:8px 2px 0}
.ab-row{display:flex;gap:10px;justify-content:flex-end;margin-top:18px}
.ab-btn{background:var(--blue);color:#fff;border:none;border-radius:980px;padding:11px 22px;font-size:.86rem;
    font-weight:500;cursor:pointer;transition:.2s var(--ease);font-family:inherit}
.ab-btn:hover{background:#0077ed;transform:translateY(-1px)}
.ab-btn.ghost{background:var(--gray);color:var(--ink)}
.ab-btn.ghost:hover{background:#e8e8ed}
.ab-btn.sm{padding:7px 14px;font-size:.78rem}

/* 편집 툴바 */
#admin-bar{position:fixed;left:50%;bottom:20px;transform:translateX(-50%) translateY(120%);z-index:310;
    display:flex;align-items:center;gap:8px;background:rgba(20,20,24,.92);backdrop-filter:blur(16px);
    border:1px solid rgba(255,255,255,.12);border-radius:16px;padding:9px 12px;
    box-shadow:0 24px 60px -18px rgba(0,0,0,.6);transition:transform .4s var(--ease);flex-wrap:wrap;justify-content:center;max-width:92vw}
#admin-bar.show{transform:translateX(-50%) translateY(0)}
.abar-badge{font-size:.68rem;font-weight:700;color:#fff;background:linear-gradient(135deg,#2979ff,#6c5ce7);
    padding:5px 10px;border-radius:20px;letter-spacing:.02em}
.abar-btn{background:rgba(255,255,255,.08);color:#f5f5f7;border:1px solid rgba(255,255,255,.1);
    border-radius:10px;padding:8px 13px;font-size:.8rem;cursor:pointer;transition:.2s;font-family:inherit;white-space:nowrap}
.abar-btn:hover{background:rgba(255,255,255,.16)}
.abar-btn.active{background:var(--green);border-color:var(--green);color:#052e16}
.abar-btn.export{background:var(--blue);border-color:var(--blue)}
.abar-btn.export:hover{background:#0077ed}
.abar-btn.ghost{background:transparent;color:#a1a1a6}

/* 인라인 문구 편집 */
/* 배경을 쓰면 그라디언트 텍스트(background-clip:text)를 덮어 글자가 사라지므로 아웃라인만 사용 */
.editing{outline:2px dashed rgba(0,113,227,.6);outline-offset:3px;border-radius:6px;cursor:text}
.editing:hover{outline-color:var(--blue)}
.editing:focus{outline-style:solid;outline-color:var(--blue)}

/* 소식 관리 리스트 */
.nm-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.nm-head h3{margin:0}
.nm-list{display:flex;flex-direction:column;gap:8px;max-height:52vh;overflow-y:auto;margin:0 -4px;padding:0 4px}
.nm-item{display:flex;align-items:center;gap:12px;background:var(--gray);border-radius:12px;padding:11px 13px}
.nm-emoji{font-size:1.3rem;flex:none;width:30px;text-align:center}
.nm-info{flex:1;min-width:0}
.nm-info b{display:block;font-size:.86rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nm-info span{font-size:.72rem;color:var(--ink-2)}
.nm-acts{display:flex;gap:4px;flex:none}
.nm-acts button{background:#fff;border:1px solid var(--line);border-radius:8px;padding:5px 9px;font-size:.74rem;
    cursor:pointer;color:var(--ink-2);transition:.15s;font-family:inherit}
.nm-acts button:hover:not(:disabled){border-color:var(--blue);color:var(--blue)}
.nm-acts button:disabled{opacity:.35;cursor:default}
.nm-acts button.danger:hover{border-color:var(--red);color:var(--red)}
.nm-foot{display:flex;justify-content:space-between;align-items:center;margin-top:16px;gap:10px}

/* 소식 편집 폼 */
.ne-grid{display:flex;flex-direction:column;gap:12px}
.ne-grid label{display:flex;flex-direction:column;gap:5px;font-size:.78rem;font-weight:600;color:var(--ink-2)}
.ne-grid textarea{resize:vertical;line-height:1.5}
.ne-row3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px}
.ne-check{flex-direction:row!important;align-items:center;gap:7px!important;justify-content:flex-start;padding-top:22px}
.ne-check input{width:auto}
.ne-colors{display:flex;gap:7px;flex-wrap:wrap}
.ne-color{width:30px;height:30px;border-radius:9px;border:2px solid transparent;cursor:pointer;transition:.2s}
.ne-color.on{border-color:var(--ink);transform:scale(1.12);box-shadow:0 0 0 2px #fff inset}

/* 관리자 토스트 */
#admin-toast{position:fixed;left:50%;bottom:84px;transform:translateX(-50%) translateY(16px);z-index:330;
    background:rgba(20,20,24,.95);color:#fff;padding:11px 20px;border-radius:12px;font-size:.84rem;
    opacity:0;pointer-events:none;transition:.3s var(--ease);box-shadow:0 16px 40px -12px rgba(0,0,0,.5);max-width:88vw;text-align:center}
#admin-toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* 소식 카드 클릭 안내 */
.news-card{cursor:pointer}

/* 큰 소식 편집창 + 마크다운 힌트/미리보기 */
.admin-box.xl{width:min(720px,100%);max-height:92vh;overflow-y:auto}
.ne-hint{font-weight:400;color:#a1a1a6;font-size:.68rem}
.ne-md{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.84rem;line-height:1.55}
.ne-prev-wrap{border:1px solid var(--line);border-radius:12px;overflow:hidden}
.ne-prev-label{display:block;background:var(--gray);padding:7px 13px;font-size:.72rem;font-weight:700;color:var(--ink-2)}
.ne-preview{padding:14px 16px;min-height:60px;max-height:200px;overflow-y:auto}
.ne-prev-empty{color:#c7c7cc;font-size:.82rem}

/* 소식 상세 — 상단 메뉴바(52px) 아래를 꽉 채우는 전체 화면 패널 */
#news-detail{top:52px;left:0;right:0;bottom:0;padding:0;display:none;background:#fff;
    overflow-y:auto;overscroll-behavior:contain;backdrop-filter:none;-webkit-backdrop-filter:none}
#news-detail.show{display:block}
.nd-box{background:#fff;width:100%;min-height:100%;position:relative;animation:ndSlide .4s var(--ease)}
@keyframes ndSlide{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
.nd-close{position:fixed;top:66px;right:22px;z-index:340;width:42px;height:42px;border:none;border-radius:50%;
    background:rgba(20,20,24,.42);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
    border:1px solid rgba(255,255,255,.25);color:#fff;font-size:1.55rem;line-height:1;cursor:pointer;
    display:flex;align-items:center;justify-content:center;transition:.2s var(--ease)}
.nd-close:hover{background:rgba(20,20,24,.62);transform:scale(1.1) rotate(90deg)}
.nd-hero{position:relative;min-height:clamp(200px,30vh,300px);display:flex;flex-direction:column;justify-content:center;
    padding:36px 0;color:#fff;overflow:hidden}
.nd-hero::after{content:"";position:absolute;inset:0;background:radial-gradient(90% 90% at 12% 12%,rgba(255,255,255,.24),transparent 55%);pointer-events:none}
.nd-emoji-bg{position:absolute;right:2%;bottom:-34px;font-size:13rem;line-height:1;opacity:.24;
    transform:rotate(-8deg);filter:saturate(1.1);pointer-events:none;user-select:none}
.nd-hero-txt{position:relative;z-index:2;width:100%;max-width:820px;margin:0 auto;padding:0 32px;text-shadow:0 1px 14px rgba(0,0,0,.16)}
.nd-hero-label{display:block;font-size:clamp(2rem,4vw,2.8rem);font-weight:800;letter-spacing:-.035em;line-height:1.06}
.nd-hero-sub{display:block;margin-top:10px;font-size:clamp(1rem,1.6vw,1.2rem);font-weight:500;opacity:.92}
.nd-content{max-width:820px;margin:0 auto;padding:34px 32px 72px}
.nd-meta{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.nd-content .nc-tag{display:inline-block}
.nd-date{font-size:.8rem;color:#a1a1a6}
.nd-title{font-size:clamp(1.6rem,3vw,2.1rem);font-weight:800;letter-spacing:-.035em;line-height:1.22;margin-bottom:20px}
.nd-content .md-body{padding-top:20px;border-top:1px solid var(--line);font-size:1.02rem}

/* 마크다운 렌더 본문 */
.md-body{font-size:.92rem;line-height:1.72;color:var(--ink)}
.md-body h3,.md-body h4,.md-body h5,.md-body h6{font-weight:700;letter-spacing:-.02em;line-height:1.3;margin:18px 0 8px}
.md-body h3{font-size:1.18rem}.md-body h4{font-size:1.05rem}.md-body h5,.md-body h6{font-size:.95rem}
.md-body p{margin:0 0 12px}
.md-body ul,.md-body ol{margin:0 0 12px;padding-left:22px}
.md-body ul li{list-style:disc}.md-body ol li{list-style:decimal}
.md-body li{margin:4px 0}
.md-body a{color:var(--blue);text-decoration:underline;text-underline-offset:2px}
.md-body strong{font-weight:700}
.md-body em{font-style:italic}
.md-body code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.86em;background:var(--gray);
    padding:2px 6px;border-radius:6px}
.md-body blockquote{border-left:3px solid var(--blue);background:rgba(0,113,227,.05);margin:0 0 12px;
    padding:10px 16px;border-radius:0 8px 8px 0;color:var(--ink-2)}
.md-body hr{border:none;border-top:1px solid var(--line);margin:18px 0}
.md-body>*:last-child{margin-bottom:0}
.ne-preview.md-body{font-size:.86rem}

/* 소식 이미지 */
.nc-visual.has-img{background-size:cover;background-position:center}
.nc-visual.has-img::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.06),rgba(0,0,0,.4))}
.nc-visual.has-img .nc-mini{position:relative;z-index:1}
.nd-hero.has-img{background-size:cover;background-position:center}
.nd-hero.has-img::after{background:linear-gradient(180deg,rgba(0,0,0,.18) 0,rgba(0,0,0,.5) 100%)}
.nd-hero.has-img .nd-emoji-bg{display:none}
.md-body img{max-width:100%;height:auto;border-radius:12px;margin:10px 0;display:block}
/* 편집기 이미지 업로드 */
.ne-img{display:flex;flex-direction:column;gap:10px}
.ne-img-prev{width:100%;height:150px;border:1px dashed var(--line);border-radius:12px;background:var(--gray);
    background-size:cover;background-position:center;display:flex;align-items:center;justify-content:center;
    color:#a1a1a6;font-size:.82rem;font-weight:500}
.ne-img-prev.has{border-style:solid;border-color:var(--line)}
.ne-img-btns{display:flex;gap:8px}

@media (max-width:520px){
    .ne-row3{grid-template-columns:1fr 1fr}
    .ne-check{padding-top:0;grid-column:1/-1}
}