:root {
	--main: #111827;
	--sub: #374151;
	--accent: #0f766e;
	--accent2: #f59e0b;
	--accent3: #FF6700;
	--bg: #f8fafc;
	--white: #ffffff;
	--line: #e5e7eb;
}

* {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}

html {
	scroll-behavior: smooth;
}

body {
	font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
	color: var(--main);
	background: var(--white);
	line-height: 1.8;
}

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

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

.container {
	width: min(1120px, 92%);
	margin: 0 auto;
}

header {
	position: sticky;
	top: 0;
	z-index: 100;
	background: rgba(255,255,255,0.94);
	backdrop-filter: blur(10px);
	border-bottom: 1px solid var(--line);
}

.header-inner {
	height: 72px;
	display: flex;
	align-items: center;
	justify-content: space-between;
}

.logo {
	font-weight: 800;
	font-size: 20px;
	letter-spacing: 0.04em;
}

.logo span {
	display: block;
	font-size: 11px;
	color: var(--accent);
	letter-spacing: 0.18em;
	margin-top: -4px;
}

nav ul {
	display: flex;
	gap: 28px;
	list-style: none;
	font-size: 14px;
	font-weight: 700;
}

.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	padding: 12px 24px;
	border-radius: 999px;
	font-weight: 700;
	transition: 0.25s;
}

.btn-primary {
	background: var(--accent);
	color: var(--white);
}

.btn-outline {
	background: var(--accent3);
}

.btn-outline:hover,
.btn-primary:hover {
	opacity: 0.85;
	transform: translateY(-2px);
}

.hero {
	background:
	linear-gradient(120deg, rgba(17,24,39,0.88), rgba(15,118,110,0.75)),
	url("../img/main.jpg");
	background-size: cover;
	background-position: center;
	color: var(--white);
	padding: 120px 0 110px;
}

.hero-content {
	max-width: 760px;
}

.label {
	display: inline-block;
	color: var(--accent2);
	font-weight: 800;
	letter-spacing: 0.12em;
	font-size: 13px;
	margin-bottom: 18px;
}

.hero h1 {
	font-size: clamp(34px, 5vw, 58px);
	line-height: 1.25;
	margin-bottom: 24px;
	letter-spacing: 0.03em;
}

.hero p {
	font-size: 18px;
	margin-bottom: 34px;
	color: #f3f4f6;
}

.hero-buttons {
	display: flex;
	gap: 14px;
	flex-wrap: wrap;
}

section {
	padding: 88px 0;
}

.section-head {
	text-align: center;
	margin-bottom: 48px;
}

.section-head .en {
	color: var(--accent);
	font-weight: 800;
	letter-spacing: 0.18em;
	font-size: 13px;
}

.section-head h2 {
	font-size: clamp(28px, 4vw, 40px);
	margin-top: 8px;
}

.section-head p {
	color: var(--sub);
	margin-top: 12px;
}

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

.card {
	background: var(--white);
	border: 1px solid var(--line);
	border-radius: 20px;
	padding: 200px 32px 20px 32px;
	box-shadow: 0 12px 32px rgba(17,24,39,0.06);
	background-size: cover;
	background-size: contain;
    background-position: top;
    background-repeat: no-repeat;
}

.card h3 {
	font-size: 19px;
	margin: 0 -15px 12px -15px;
	color: var(--accent3);
	background-color: var(--white);
	padding: 5px 15px;
	border-radius: 7px 7px 0 0;
}

.card.design {
	background-image: url(../img/design.jpg);
}
.card.printing {
	background-image: url(../img/printing.jpg);
}
.card.software {
	background-image: url(../img/software.jpg);
}

.card p,
.card li {
	color: var(--sub);
	font-size: 15px;
}

.card ul {
	margin-top: 14px;
	padding-left: 1.2em;
}

.bg {
	background: var(--bg);
}

.strength {
	display: grid;
	grid-template-columns: 0.9fr 1.1fr;
	gap: 48px;
	align-items: center;
}

.strength-box {
	background: var(--main);
	color: var(--white);
	border-radius: 28px;
	padding: 42px;
}

.strength-box h2 {
	font-size: 34px;
	line-height: 1.35;
	margin-bottom: 18px;
}

.strength-list {
	display: grid;
	gap: 18px;
}

.strength-item {
	background: var(--white);
	border: 1px solid var(--line);
	border-radius: 18px;
	padding: 24px;
}

.strength-item h3 {
	color: var(--accent);
	margin-bottom: 6px;
}

.works {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 18px;
}

.work {
	background: var(--white);
	border-radius: 18px;
	padding: 24px;
	border: 1px solid var(--line);
	text-align: center;
	font-weight: 800;
}

.company-table {
	width: 100%;
	border-collapse: collapse;
	background: var(--white);
	border-radius: 20px;
	overflow: hidden;
	box-shadow: 0 12px 32px rgba(17,24,39,0.06);
}

.company-table th,
.company-table td {
	border-bottom: 1px solid var(--line);
	padding: 20px;
	text-align: left;
}

.company-table th {
	width: 220px;
	background: #f1f5f9;
}

.contact {
	background: linear-gradient(120deg, var(--main), var(--accent));
	color: var(--white);
	text-align: center;
	border-radius: 32px;
	padding: 56px 28px;
}

.contact h2 {
	font-size: 34px;
	margin-bottom: 16px;
}

.contact p {
	margin-bottom: 28px;
	color: #f3f4f6;
}

.contact-box {
	width: 800px;
	background-color: var(--bg);
	padding: 25px 35px;
	margin: 0 auto;
	border-radius: 20px;
}

.contact-box table {
	width: 100%;
}

.contact-box table th {
	width: 30%;
}

.contact-box input[type=text] {
	width: 100%;
	padding: 5px 10px;
}

.contact-box input[type=button],
.contact-box input[type=submit] {
	width: 45%;
	padding: 5px;
	cursor: pointer;
}

.contact-box .button-box {
	text-align: center;
}

.err {
	color: red;
}

.contact-box textarea {
	width: 100%;
	height: 10em;
	padding: 5px;
}

footer {
	padding: 36px 0;
	background: var(--main);
	color: var(--white);
	text-align: center;
	font-size: 13px;
}

@media (max-width: 900px) {
	.contact-box {
		width: 100%;
		padding: 15px;
	}

	.contact-box tr{
		display: flex;
		flex-direction: column;
		margin-bottom: 10px;
	}

	.contact-box tr th,
	.contact-box tr td {
		width: 100%;
		text-align: left;
	}

	nav {
		display: none;
	}

	.cards,
	.works,
	.strength {
		grid-template-columns: 1fr;
	}

	.card h3 {
		margin: 20px -15px 12px -15px;
	}

	.hero {
		padding: 90px 0;
	}

	.company-table th,
	.company-table td {
		display: block;
		width: 100%;
	}

	.company-table th {
		padding-bottom: 8px;
	}
}