:root {
	--nh-primary: #2563eb;
	--nh-primary-dark: #1e40af;
	--nh-secondary: #14b8a6;
	--nh-accent: #f97316;
	--nh-bg: #f8fbff;
	--nh-soft: #eaf4ff;
	--nh-dark: #102033;
	--nh-muted: #64748b;
	--nh-card: #ffffff;
	--nh-border: #dbe7f3;
    --nh-danger-soft: #fff1f2;
	--nh-success-soft: #ecfdf5;
	--nh-warning-soft: #fffbeb;
}

* {
	font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
	background: var(--nh-bg);
	color: var(--nh-dark);
}

.navbar {
	background: rgba(255,255,255,0.92);
	backdrop-filter: blur(12px);
	border-bottom: 1px solid var(--nh-border);
}

.brand-mark {
	width: 42px;
	height: 42px;
	border-radius: 14px;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	color: #fff;
	background: linear-gradient(135deg, var(--nh-primary), var(--nh-secondary));
	font-weight: 800;
	box-shadow: 0 10px 25px rgba(37,99,235,.25);
}

.text-gradient {
	background: linear-gradient(135deg, var(--nh-primary), var(--nh-secondary));
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
}

.hero {
	padding: 96px 0 72px;
	background:
		radial-gradient(circle at top left, rgba(20,184,166,.22), transparent 35%),
		radial-gradient(circle at top right, rgba(37,99,235,.18), transparent 38%);
}

.badge-soft {
	background: rgba(37,99,235,.10);
	color: var(--nh-primary-dark);
	border: 1px solid rgba(37,99,235,.18);
}

.hero-title {
	font-size: clamp(2.4rem, 5vw, 4.6rem);
	line-height: 1.02;
	font-weight: 800;
	letter-spacing: -0.05em;
}

.page-hero {
	padding: 84px 0 42px;
	background:
		radial-gradient(circle at top left, rgba(20,184,166,.22), transparent 35%),
		radial-gradient(circle at top right, rgba(37,99,235,.18), transparent 38%);
}

.hero-lead {
	font-size: 1.18rem;
	color: var(--nh-muted);
	max-width: 680px;
}

.page-lead {
	font-size: 1.12rem;
	color: var(--nh-muted);
	max-width: 820px;
}

.page-title {
	font-size: clamp(2.2rem, 4vw, 4rem);
	line-height: 1.04;
	font-weight: 800;
	letter-spacing: -0.05em;
}

.btn-primary-custom {
	background: linear-gradient(135deg, var(--nh-primary), var(--nh-secondary));
	border: 0;
	color: #fff;
	font-weight: 700;
	border-radius: 999px;
	padding: .9rem 1.35rem;
	box-shadow: 0 14px 30px rgba(37,99,235,.25);
}

.btn-primary-custom:hover {
	color: #fff;
	transform: translateY(-1px);
	box-shadow: 0 18px 36px rgba(37,99,235,.30);
}

.btn-outline-custom {
	border: 1px solid var(--nh-border);
	color: var(--nh-dark);
	background: #fff;
	font-weight: 700;
	border-radius: 999px;
	padding: .9rem 1.35rem;
}

.hero-panel, .feature-card, .form-card, .notice-card, .notification-card {
    background: var(--nh-card);
    border: 1px solid var(--nh-border);
    border-radius: 28px;
    box-shadow: 0 20px 50px rgba(15, 23, 42, .07);
}

.hero-panel {
    padding: 28px;
}

.metric-card {
    background: linear-gradient(180deg, #fff, #f5fbff);
    border: 1px solid var(--nh-border);
    border-radius: 22px;
    padding: 20px;
}

.metric-icon, .card-icon {
    width: 52px;
    height: 52px;
    border-radius: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--nh-soft);
    color: var(--nh-primary);
    font-size: 1.45rem;
    margin-bottom: 16px;
    padding: 10px;
}

.section-padding {
    padding: 76px 0;
}

.section-title {
    font-weight: 800;
    letter-spacing: -0.035em;
    font-size: clamp(2rem, 3vw, 3rem);
}

.section-subtitle {
    color: var(--nh-muted);
    font-size: 1.08rem;
    max-width: 760px;
}

.feature-card, .form-card, .notice-card {
    padding: 28px;
    height: 100%;
}

.notification-card {
	padding: 28px;
    height: auto;
}


.form-card.highlight {
    border-color: rgba(37,99,235,.35);
    background: linear-gradient(180deg, #fff, #f7fbff);
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: .82rem;
    font-weight: 700;
    padding: .45rem .7rem;
    border-radius: 999px;
    background: rgba(20,184,166,.12);
    color: #0f766e;
}

.steps {
    counter-reset: step;
}

.step-item {
    position: relative;
    padding-left: 72px;
    margin-bottom: 28px;
}

.step-item::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 0;
    top: 0;
    width: 48px;
    height: 48px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--nh-primary), var(--nh-secondary));
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
}

.privacy-box {
    background: #ffffff;
    border: 1px dashed rgba(37,99,235,.35);
    border-radius: 22px;
    padding: 22px;
}


.info-card, .question-card, .result-card, .progress-card {
	background: var(--nh-card);
	border: 1px solid var(--nh-border);
	border-radius: 28px;
	box-shadow: 0 20px 50px rgba(15, 23, 42, .07);
}

			 
			   
 

.info-card {
	padding: 24px;
									
					 
			   
}

.info-icon {
	width: 52px;
	height: 52px;
	border-radius: 18px;
	background: var(--nh-soft);
	color: var(--nh-primary);
	display: inline-flex;
	align-items: center;
	justify-content: center;
							
						  
	font-size: 1.45rem;
	flex: 0 0 auto;
}

.progress-card {
	padding: 18px 22px;
	position: sticky;
	top: 76px;
	z-index: 5;
}

.progress {
	height: 10px;
	border-radius: 999px;
	background: #e2e8f0;
}

.progress-bar {
	background: linear-gradient(135deg, var(--nh-primary), var(--nh-secondary));
					
				  
}

.question-card {
	padding: 26px;
	margin-bottom: 20px;
}

.question-header {
	display: flex;
	gap: 16px;
	align-items: flex-start;
	margin-bottom: 18px;
}

.question-number {
	width: 48px;
	height: 48px;
	border-radius: 16px;
	background: linear-gradient(135deg, var(--nh-primary), var(--nh-secondary));
	color: #fff;
	font-weight: 800;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	flex: 0 0 auto;
}

.question-title {
	font-size: 1.1rem;
	font-weight: 800;
	margin: 0;
	line-height: 1.35;
}

.question-hint {
	color: var(--nh-muted);
	font-size: .95rem;
	margin-top: 6px;
	margin-bottom: 0;
}

.answer-options {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
	gap: 12px;
}

.answer-option {
	cursor: pointer;
	border: 1px solid var(--nh-border);
	border-radius: 18px;
	padding: 14px 16px;
	background: #fff;
	display: flex;
	align-items: center;
	gap: 10px;
	font-weight: 700;
	color: var(--nh-dark);
	transition: .18s ease;
	min-height: 64px;
				
}

.answer-option:hover {
	border-color: rgba(37,99,235,.45);
	transform: translateY(-1px);
	box-shadow: 0 12px 26px rgba(15,23,42,.06);
}

.answer-option input {
	width: 18px;
	height: 18px;
	accent-color: var(--nh-primary);
	flex: 0 0 auto;
}

.answer-option:has(input:checked) {
	border-color: rgba(37,99,235,.75);
	background: linear-gradient(180deg, #fff, #f3f8ff);
	box-shadow: 0 12px 26px rgba(37,99,235,.10);
}

.btn-primary-custom {
			  
					 
	background: linear-gradient(135deg, var(--nh-primary), var(--nh-secondary));
	border: 0;
	color: #fff;
	font-weight: 800;
	border-radius: 999px;
	padding: .95rem 1.45rem;
	box-shadow: 0 14px 30px rgba(37,99,235,.25);
}

.btn-primary-custom:hover {
	color: #fff;
	transform: translateY(-1px);
	box-shadow: 0 18px 36px rgba(37,99,235,.30);
}

.btn-outline-custom {
	border: 1px solid var(--nh-border);
	color: var(--nh-dark);
	background: #fff;
	font-weight: 800;
	border-radius: 999px;
	padding: .95rem 1.45rem;
}

.result-card {
	padding: 30px;
	display: none;
	scroll-margin-top: 110px;
}

.result-score {
	width: 112px;
	height: 112px;
	border-radius: 34px;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	flex-direction: column;
	background: linear-gradient(135deg, var(--nh-primary), var(--nh-secondary));
	color: #fff;
	box-shadow: 0 18px 38px rgba(37,99,235,.22);
}

.result-score strong {
	font-size: 2.2rem;
	line-height: 1;
}

.result-message {
	border-radius: 22px;
	padding: 20px;
	border: 1px solid var(--nh-border);
	background: var(--nh-warning-soft);
}

.result-message.low-risk {
	background: var(--nh-success-soft);
	border-color: #bbf7d0;
}

.result-message.attention-risk {
	background: var(--nh-danger-soft);
	border-color: #fecdd3;
}

.result-message.prefrail-risk {
	background: var(--nh-warning-soft);
	border-color: #fde68a;
}

.result-message.frail-risk {
	background: var(--nh-danger-soft);
	border-color: #fecdd3;
}

.invalid-feedback-custom {
	display: none;
	margin-top: 14px;
	color: #be123c;
	font-weight: 700;
}

.question-card.invalid {
	border-color: #fb7185;
	background: #fffafa;
}

.question-card.invalid .invalid-feedback-custom {
	display: block;
}

.instrument-list {
    max-height: 420px;
    overflow-y: auto;
    padding-right: 6px;
}

.footer {
    background: #fff;
    padding: 80px 0 30px;
    border-top: 1px solid var(--nh-border);
}

.footer-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 18px;
    color: var(--nh-primary);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
	font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    text-decoration: none;
    color: var(--nh-text-secondary);
    transition: .2s ease;
}

.footer-links a:hover {
    color: var(--nh-primary);
}

.footer-divider {
    margin: 50px 0 25px;
    opacity: .08;
}

.footer-powered {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--nh-text-secondary);
    font-size: .9rem;
}

@media (max-width: 991px) {
	.hero {
		padding-top: 72px;			
	}
}

@media (max-width: 767px) {
	.question-card {
		padding: 20px;
	}

	.question-header {
		gap: 12px;
	}

	.progress-card {
		top: 66px;
		border-radius: 0 0 22px 22px;
		margin-left: -12px;
		margin-right: -12px;
	}
}