/****************************************
*     Common
****************************************/
#sec1, #sec2, #sec3, #sec4, #sec5 {
	padding-top: 50px; padding-bottom: 50px;
}

.sec-title {
	padding: 0 30px;
	font-family: var(--font-jua); font-size: clamp(2.0rem, 3.2vw, 3.0rem);
	text-align: center;
	word-break: break-word;
	display: block;
}

/****************************************
*     Section 1
****************************************/
#sec1{
	/*display: flex;*/
	/*flex-direction: row; flex-wrap: wrap; justify-content: space-between; align-items: stretch; gap: 30px;*/
	/*display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; justify-content: center;*/
	display: grid; grid-template-columns: 6fr 4fr; gap: 40px;
	align-items: center;
}

/****************************************
*     Section 2
****************************************/
#sec2{

}
#sec2 .sec-desc {

}
#sec2 .sec-desc .sec-desc-item {
	margin-top: 20px; padding: 28px;
	background: #fff;
	border: 1px solid #eff2f4; border-radius: 20px;
	box-shadow: 0 2px 6px rgba(29, 37, 51, 0.06);
	display: grid;
	grid-template-columns: 80px 1fr; align-items: center; gap: 25px;
}
#sec2 .sec-desc .sec-desc-item > *{
	/*border: 1px solid red;*/
}
#sec2 .sec-desc .sec-desc-item .num span {
	width: 80px; height: 80px;
	color: var(--color-g5);
	font-family: var(--font-gaegu); font-size: 2.5rem;
	text-align: center;
	background: var(--color-g1);
	border: 1px dashed var(--color-g5); border-radius: 40px;
	display: grid; align-items: center;
}


@media (max-width: 960px) {
	#sec1{ grid-template-columns: 1fr; gap: 10px; }
}

@media (max-width: 560px) {
	#sec2 .sec-desc .sec-desc-item {
		text-align: center;
		grid-template-columns: 1fr;
	}
	#sec2 .sec-desc .sec-desc-item .num { text-align: center; }
}


/****************************************
*     공통 컴포넌트 (green 테마 — --color-g* 사용)
****************************************/
.kh-reveal { opacity: 1; transform: none; }
.text-ac { text-align: center; color: #5b6579; }

.kh-h1 {
	margin: 10px 0 0;
	color: #1d2533;
	font-size: clamp(2.0rem, 3.6vw, 2.9rem); font-weight: 800; line-height: 1.3; letter-spacing: -0.02em;
}
.kh-body { color: #5b6579; font-size: 1.0rem; line-height: 1.75; }
.kh-body-sm { color: #5b6579; font-size: 0.9rem; line-height: 1.65; }

.kh-btn {
	height: 48px; padding: 0 22px;
	font-size: 0.95rem; font-weight: 700; white-space: nowrap;
	border: none; border-radius: 999px;
	display: inline-flex; align-items: center; justify-content: center; gap: 8px;
	cursor: pointer; font-family: inherit;
	transition: transform .15s, background .18s, color .18s, border-color .18s, box-shadow .18s;
}
.kh-btn-lg { height: 54px; padding: 0 28px; font-size: 1.0rem; }
.kh-btn-teal { color: #fff; background: var(--color-g4); box-shadow: 0 8px 18px rgba(40,167,123,0.28); }
.kh-btn-teal:hover { background: var(--color-g5); transform: translateY(-2px); }
.kh-btn-ghost { color: #33425a; background: #fff; border: 1.5px solid #e4ebe8; }
.kh-btn-ghost:hover { border-color: var(--color-g4); color: var(--color-g5); transform: translateY(-2px); }

/****************************************
*     Section 1 — 히어로
****************************************/
#sec1 .kh-sub-hero-actions { margin-top: 28px; display: flex; flex-direction: row; flex-wrap: wrap; gap: 12px; }
#sec1 .kh-h1 .font-gaegu { font-size: clamp(1.4rem, 2.4vw, 1.8rem); }
#sec1 > div:first-child p { margin-top: 18px; color: #5b6579; line-height: 1.75; }

.kh-sub-hero-card {
	min-height: 200px;
	padding: 40px;
	background: #fff;
	border: 1px solid #eef3f1; border-radius: 28px;
	box-shadow: 0 18px 40px rgba(29,37,51,0.08);
	display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
}
.kh-10-badge {
	color: var(--color-g4);
	display: inline-flex; align-items: baseline; gap: 8px;
}
.kh-10-badge .font-gaegu { color: var(--color-g4); }
.kh-10-cap { color: #33425a; font-size: 1.0rem; font-weight: 700; }

/****************************************
*     Section 3 — 학습 난이도
****************************************/
#sec3 .kh-hl {
	background: linear-gradient(180deg, transparent 58%, var(--color-g2) 58%);
	padding: 0 4px;
}
.kh-grade-tabs {
	margin: 36px auto 0;
	display: flex; flex-direction: row; flex-wrap: wrap; justify-content: center; gap: 14px;
}
.kh-grade-tab {
	width: 150px;
	padding: 20px 16px;
	background: #fff;
	border: 2px solid #e7eceb; border-radius: 18px;
	display: flex; flex-direction: column; align-items: center; gap: 6px;
	cursor: pointer;
	transition: border-color .15s, box-shadow .15s, transform .15s;
	font-family: inherit;
}
.kh-grade-tab:hover { transform: translateY(-2px); border-color: var(--color-g2); }
.kh-grade-tab .kh-grade-emoji { font-size: 1.7rem; }
.kh-grade-tab .kh-grade-key { color: #1d2533; font-size: 1.0rem; font-weight: 800; }
.kh-grade-tab small { color: #8b94a6; font-size: 0.8rem; }
.kh-grade-tab.active {
	background: var(--color-g1);
	border-color: var(--color-g4);
	box-shadow: 0 8px 20px rgba(40,167,123,0.16);
}
.kh-grade-tab.active .kh-grade-key { color: var(--color-g5); }

.kh-grade-desc {
	margin: 22px auto 0;
	max-width: 760px;
	padding: 22px 24px;
	background: var(--color-g1);
	border-radius: 18px;
	text-align: center;
}
.kh-grade-desc p { color: var(--color-g5); font-weight: 600; }

.kh-compose-grid {
	margin: 26px auto 0;
	max-width: 860px;
	display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
}
.kh-compose-card {
	background: #fff;
	border: 1px solid #eef3f1; border-radius: 18px;
	overflow: hidden;
	box-shadow: 0 2px 6px rgba(29,37,51,0.05);
}
.kh-compose-head {
	padding: 14px 18px;
	font-size: 1.05rem; font-weight: 800; text-align: center;
}
.kh-compose-head-lit { color: var(--color-g5); background: var(--color-g2); }
.kh-compose-head-nonlit { color: #fff; background: var(--color-g3); }
.kh-compose-body {
	padding: 20px;
	display: flex; flex-direction: row; flex-wrap: wrap; justify-content: center; gap: 10px;
}
.kh-compose-pill {
	padding: 8px 16px;
	color: var(--color-g5); font-size: 0.9rem; font-weight: 700;
	background: var(--color-g1); border-radius: 999px;
}

/****************************************
*     Section 4 — 실제 학습 화면
****************************************/
.kh-screen-grid {
	margin: 40px 0 0;
	display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.kh-screen-card {
	position: relative;
	padding: 18px;
	background: #fff;
	border: 1px solid #eef3f1; border-radius: 20px;
	box-shadow: 0 4px 14px rgba(29,37,51,0.05);
}
.kh-screen-number {
	position: absolute; top: -12px; left: 18px;
	width: 30px; height: 30px;
	color: #fff; font-size: 0.85rem; font-weight: 800;
	background: #1d2533; border-radius: 999px;
	display: grid; place-items: center;
}
.kh-screen-shot {
	position: relative;
	height: 150px;
	padding: 22px 18px;
	background: #f4f7f6; border-radius: 14px;
	margin-bottom: 16px;
}
.kh-screen-shot .ln {
	display: block; height: 9px; border-radius: 6px; background: #e2e8e6; margin-bottom: 10px;
}
.kh-screen-shot .ln-1 { width: 70%; }
.kh-screen-shot .ln-2 { width: 90%; }
.kh-screen-shot .ln-3 { width: 55%; }
.kh-screen-shot .kh-screen-dot {
	position: absolute; right: 16px; bottom: 16px;
	width: 34px; height: 34px; border-radius: 999px;
	background: var(--color-g4);
}
.kh-screen-cap .kh-screen-tag {
	color: #8b94a6; font-size: 0.78rem; font-weight: 700;
}
.kh-screen-cap h4 { margin: 4px 0 6px; color: #1d2533; font-size: 1.05rem; font-weight: 800; }
.kh-screen-cap p { color: #5b6579; font-size: 0.85rem; line-height: 1.55; }
.kh-screen-note { margin-top: 24px; color: #8b94a6; font-size: 0.85rem; text-align: center; }

/****************************************
*     CTA 밴드
****************************************/
.kh-cta-band { background: linear-gradient(135deg, #28a77b 0%, #15835e 100%); }
.kh-cta-inner {
	padding-top: 56px; padding-bottom: 56px;
	display: flex; flex-direction: row; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 32px;
}
.kh-cta-left { flex: 1; min-width: 280px; }
.kh-cta-eyebrow {
	display: inline-flex; align-items: center; gap: 6px;
	padding: 6px 14px; border-radius: 999px;
	color: #fff; font-size: 0.85rem; font-weight: 700;
	background: rgba(255,255,255,0.2);
}
.kh-cta-title { margin: 16px 0 0; color: #fff; font-size: clamp(1.6rem, 2.8vw, 2.2rem); font-weight: 800; line-height: 1.3; }
.kh-cta-hl { color: #b8f0e0; }
.kh-cta-sub { margin: 14px 0 0; color: rgba(255,255,255,0.85); }
.kh-btn-cta { color: var(--color-g5); background: #fff; box-shadow: 0 10px 24px rgba(0,0,0,0.12); }
.kh-btn-cta:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(0,0,0,0.18); }

@media (max-width: 960px) {
	.kh-grade-tabs { gap: 10px; }
	.kh-screen-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
	.kh-compose-grid { grid-template-columns: 1fr; }
	.kh-screen-grid { grid-template-columns: 1fr; }
	.kh-cta-inner { flex-direction: column; align-items: flex-start; }
}