:root {
	--bg: #FCFCFD;
	--bg-sub: #E5E5E7;
	--accent: #059669;
	--accent-2: #000000;
	--text: #1C1C1E;
	--radius: 12px;
	--gap-img-text: 16px;
	--side-pad: 24px;
	--section-gap: 48px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
	margin: 0;
	font-family: Pretendard, -apple-system, BlinkMacSystemFont, sans-serif;
	font-size: 16px;
	line-height: 1.6;
	color: var(--text);
	background: var(--bg);
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 { margin: 0; font-weight: 700; }
h1 { font-size: 29px; line-height: 1.35; }
h2 { font-size: 22px; line-height: 1.4; }
h3 { font-size: 18px; line-height: 1.45; }
p { margin: 0 0 1em; }

.container {
	max-width: 1120px;
	margin: 0 auto;
	padding: 0 var(--side-pad);
}

.icon { width: 24px; height: 24px; flex-shrink: 0; }

/* ---------- Buttons ---------- */
.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-height: 44px;
	padding: 0 20px;
	border-radius: var(--radius);
	font-weight: 700;
	font-size: 16px;
	white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-outline { background: transparent; color: var(--accent-2); border: 1px solid var(--accent-2); }

.sdr-cta { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- Header ---------- */
.sdr-header {
	position: sticky;
	top: 0;
	z-index: 100;
	background: var(--bg);
	border-bottom: 1px solid var(--bg-sub);
}
.sdr-header-inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	height: 64px;
}
.sdr-logo { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 18px; }
.sdr-logo img { border-radius: 6px; }

.sdr-nav-pc { display: none; }
.sdr-nav-pc a { display: none; }

.sdr-hamburger {
	width: 44px;
	height: 44px;
	background: none;
	border: none;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 5px;
	cursor: pointer;
}
.sdr-hamburger span {
	display: block;
	width: 22px;
	height: 2px;
	background: var(--text);
	transition: transform .2s ease, opacity .2s ease;
}
.sdr-hamburger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.sdr-hamburger.is-open span:nth-child(2) { opacity: 0; }
.sdr-hamburger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.sdr-nav-mobile {
	max-height: 0;
	overflow: hidden;
	transition: max-height .3s ease;
	background: var(--bg);
	border-top: 1px solid var(--bg-sub);
}
.sdr-nav-mobile.is-open { max-height: 320px; }
.sdr-nav-mobile a {
	display: block;
	padding: 14px var(--side-pad);
	min-height: 44px;
	line-height: 44px;
	border-bottom: 1px solid var(--bg-sub);
	font-weight: 600;
}

/* ---------- Sections ---------- */
.sdr-section { padding: var(--section-gap) 0; }
.sdr-section-head { margin-bottom: 32px; }
.section-title { font-weight: 700; }
.section-sub { font-weight: 400; color: #4b4b52; margin-top: 12px; }

/* ---------- Hero ---------- */
.sdr-hero {
	position: relative;
	padding: 64px 0 var(--section-gap);
	background-image: var(--hero-bg, none);
	background-size: cover;
	background-position: center;
	color: #fff;
}
.sdr-hero-inner { position: relative; z-index: 1; }
.sdr-hero h1 { color: #fff; }
.sdr-hero .section-sub { color: #f0f0f0; }
.sdr-hero .sdr-cta { margin-top: 28px; }
.sdr-hero .btn-outline { color: #fff; border-color: #fff; }

/* ---------- Card grid ---------- */
.sdr-grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: 20px;
}
.sdr-card {
	background: #fff;
	border-radius: var(--radius);
	overflow: hidden;
	border: 1px solid var(--bg-sub);
	opacity: 0;
	transform: translateY(16px);
	transition: opacity .5s ease, transform .5s ease, box-shadow .25s ease, transform .25s ease;
}
.sdr-card.is-visible { opacity: 1; transform: translateY(0); }
.sdr-card-media { position: relative; aspect-ratio: 4/3; overflow: hidden; }
.sdr-card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s ease; }
a.sdr-card:hover .sdr-card-media img,
a.sdr-card:focus .sdr-card-media img { transform: scale(1.06); }
a.sdr-card:hover, a.sdr-card:focus { box-shadow: 0 8px 24px rgba(0,0,0,.1); }
.sdr-card-body { padding: var(--gap-img-text); }
.sdr-card-body h3 { margin-bottom: 8px; }
.sdr-card-body p { margin: 0; font-size: 15px; color: #4b4b52; }

.sdr-link-indicator {
	position: absolute;
	right: 12px;
	bottom: 12px;
	width: 36px;
	height: 36px;
	border-radius: 50%;
	background: rgba(0,0,0,.55);
	display: flex;
	align-items: center;
	justify-content: center;
}
.sdr-link-indicator svg { width: 18px; height: 18px; }

/* ---------- Fade-in ---------- */
.sdr-fade { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.sdr-fade.is-visible { opacity: 1; transform: translateY(0); }

/* ---------- About / strengths ---------- */
.sdr-strengths {
	display: flex;
	gap: 16px;
	overflow-x: auto;
	scroll-snap-type: x mandatory;
	-webkit-overflow-scrolling: touch;
	scrollbar-width: none;
	padding-bottom: 4px;
}
.sdr-strengths::-webkit-scrollbar { display: none; }
.sdr-strength-card {
	flex: 0 0 100%;
	scroll-snap-align: start;
	background: var(--bg-sub);
	border-radius: var(--radius);
	padding: 24px;
}
.sdr-strength-card .icon-wrap {
	width: 48px; height: 48px;
	border-radius: 50%;
	background: var(--accent);
	display: flex; align-items: center; justify-content: center;
	margin-bottom: 16px;
}
.sdr-strength-card .icon-wrap svg { width: 24px; height: 24px; color: #fff; }
.sdr-strength-card h3 { margin-bottom: 8px; }
.sdr-strength-card p { margin: 0; font-size: 15px; }

.sdr-dots { display: flex; justify-content: center; gap: 8px; margin-top: 16px; }
.sdr-dots span { width: 8px; height: 8px; border-radius: 50%; background: var(--bg-sub); border: 1px solid #c8c8ca; }
.sdr-dots span.is-active { background: var(--accent); border-color: var(--accent); }

/* ---------- FAQ accordion ---------- */
.sdr-faq-item { border-bottom: 1px solid var(--bg-sub); }
.sdr-faq-q {
	width: 100%;
	text-align: left;
	background: none;
	border: none;
	padding: 16px 0;
	min-height: 44px;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 12px;
	font-weight: 700;
	font-size: 16px;
	color: var(--text);
	cursor: pointer;
}
.sdr-faq-q .icon { transition: transform .2s ease; }
.sdr-faq-item.is-open .sdr-faq-q .icon { transform: rotate(180deg); }
.sdr-faq-a {
	max-height: 0;
	overflow: hidden;
	transition: max-height .3s ease;
}
.sdr-faq-item.is-open .sdr-faq-a { max-height: 320px; }
.sdr-faq-a p { padding: 0 0 16px; color: #4b4b52; font-size: 15px; }

/* ---------- Consult CTA section ---------- */
.sdr-consult-cta { background: var(--bg-sub); text-align: center; }
.sdr-consult-inner .sdr-cta { justify-content: center; margin-top: 24px; }

/* ---------- Footer ---------- */
.sdr-footer { background: var(--accent-2); color: #fff; padding: var(--section-gap) 0; }
.sdr-footer-nav { display: flex; gap: 24px; margin-bottom: 24px; flex-wrap: wrap; }
.sdr-footer-nav a { display: flex; align-items: center; gap: 6px; min-height: 44px; opacity: .85; }
.sdr-footer-info p { margin: 0 0 6px; font-size: 14px; opacity: .75; }

/* ---------- Info / content blocks (service & case detail pages) ---------- */
.sdr-content-section { padding: 32px 0; }
.sdr-icon-list { display: grid; grid-template-columns: 1fr; gap: 16px; margin: 24px 0; }
.sdr-icon-list-item {
	display: flex;
	gap: var(--gap-img-text);
	background: var(--bg-sub);
	border-radius: var(--radius);
	padding: 16px;
}
.sdr-icon-list-item .icon-wrap {
	width: 40px; height: 40px; border-radius: 50%;
	background: var(--accent); flex-shrink: 0;
	display: flex; align-items: center; justify-content: center;
}
.sdr-icon-list-item .icon-wrap svg { width: 22px; height: 22px; color: #fff; }
.sdr-icon-list-item h4 { margin-bottom: 4px; }
.sdr-icon-list-item p { margin: 0; font-size: 15px; color: #4b4b52; }

.sdr-steps { counter-reset: step; list-style: none; margin: 24px 0; padding: 0; }
.sdr-steps li {
	counter-increment: step;
	position: relative;
	padding: 16px 16px 16px 56px;
	border-radius: var(--radius);
	background: #fff;
	border: 1px solid var(--bg-sub);
	margin-bottom: 12px;
}
.sdr-steps li::before {
	content: counter(step);
	position: absolute;
	left: 16px; top: 50%; transform: translateY(-50%);
	width: 28px; height: 28px;
	border-radius: 50%;
	background: var(--accent);
	color: #fff;
	display: flex; align-items: center; justify-content: center;
	font-weight: 700; font-size: 14px;
}

.sdr-detail-hero {
	padding: 40px 0 8px;
}
.sdr-detail-hero img {
	width: 100%; height: auto;
	border-radius: var(--radius);
	margin-top: var(--gap-img-text);
}

.sdr-region-box,
.sdr-highlight-box {
	background: var(--bg-sub);
	border-radius: var(--radius);
	padding: 20px;
	margin: 24px 0;
}
.sdr-region-box h3, .sdr-highlight-box h3 { margin-bottom: 12px; }
.sdr-region-box ul, .sdr-highlight-box ul { margin: 0; padding-left: 20px; }
.sdr-region-box li, .sdr-highlight-box li { margin-bottom: 6px; font-size: 15px; }

.sdr-compare-table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 15px; }
.sdr-compare-table th, .sdr-compare-table td { border: 1px solid var(--bg-sub); padding: 12px; text-align: left; }
.sdr-compare-table th { background: var(--bg-sub); font-weight: 700; }

/* ---------- Sitemap page ---------- */
.sdr-sitemap-group { margin-bottom: 32px; }
.sdr-sitemap-group h2 { margin-bottom: 16px; }
.sdr-sitemap-list { list-style: none; margin: 0; padding: 0; }
.sdr-sitemap-list li { border-bottom: 1px solid var(--bg-sub); }
.sdr-sitemap-list a { display: block; padding: 14px 4px; min-height: 44px; line-height: 16px; }

/* ---------- Contact page ---------- */
.sdr-process { list-style: none; margin: 24px 0; padding: 0; display: grid; gap: 12px; }
.sdr-contact-phone-btn { font-size: 18px; }

/* ================= Desktop ================= */
@media (min-width: 768px) {
	.container { padding: 0 32px; }
	h1 { font-size: 40px; }
	h2 { font-size: 30px; }
	h3 { font-size: 20px; }

	.sdr-nav-pc { display: flex; align-items: center; gap: 28px; margin-left: auto; }
	.sdr-nav-pc a { display: flex; align-items: center; gap: 6px; font-weight: 600; }
	.sdr-hamburger { display: none; }
	.sdr-nav-mobile { display: none !important; }

	.sdr-grid { grid-template-columns: repeat(3, 1fr); gap: 24px; }

	.sdr-strengths { overflow: visible; grid-template-columns: repeat(3, 1fr); display: grid; }
	.sdr-strength-card { flex: none; }
	.sdr-dots { display: none; }

	.sdr-icon-list { grid-template-columns: repeat(2, 1fr); }

	.sdr-hero { min-height: 640px; display: flex; align-items: center; padding: 64px 0; }
}