/* CSS Variables */
:root {
    --primary: #2563EB;
    --secondary: #1E40AF;
    --accent: #3B82F6;
    --dark: #0F172A;
    --medium: #64748B;
    --light: #F8FAFC;
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    --font-noto: "Noto Sans JP", sans-serif;
    --font-inter: "Inter", sans-serif;
}

/* Basic Reset & Defaults */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-noto);
    color: var(--dark);
    background-color: white;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
    font-family: var(--font-noto);
    font-weight: 700;
}

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

img {
    max-width: 100%;
    height: auto;
}

/* Utility Classes */
.container {
    width: 100%;
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.hidden {
    display: none;
}

/* Animation base styles */
.scroll-animate, .stagger-animate > * {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.scroll-animate.visible, .stagger-animate.visible > * {
    opacity: 1;
    transform: translateY(0);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    transition: all 0.3s ease-in-out;
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
}
.header.scrolled {
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}
.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.NexproLogo {
    width: 150px;
    height: auto;
}

.main-nav {
    display: none;
}
.main-nav a {
    color: var(--medium);
    font-weight:bold;
    transition: color 0.2s;
}
.main-nav a:hover {
    color: var(--primary);
}
.mobile-menu-btn {
    background: none; border: none; font-size: 1.5rem; color: var(--dark); cursor: pointer;
}
.mobile-menu {
    border-top: 1px solid #e5e7eb;
}
.mobile-menu a {
    display: block; padding: 0.75rem 1.5rem; color: var(--medium);
}
.mobile-menu a:hover {
    background-color: var(--light);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    font-family: var(--font-inter);
    font-size: 1rem;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}
.btn-primary {
    background-color: var(--primary);
    color: white;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -2px rgba(0,0,0,0.05);
}
.btn-primary:hover {
    background-color: var(--secondary);
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.07), 0 4px 6px -4px rgba(0,0,0,0.07);
    transform: translateY(-2px);
}
.btn-secondary {
    background-color: white;
    border: 1px solid var(--primary);
    color: var(--primary);
}
.btn-secondary:hover {
    transform: translateY(-2px);    
}
.btn:active {
    transform: translateY(1px) scale(0.98);
}

.button-text {
    padding-left: 1rem;
}

/* Hero Section */
.hero {
    position: relative;
    padding-top: 8rem;
    padding-bottom: 5rem;
    overflow: hidden;
}
.hero__bg {
  position: absolute;
  top: 3rem;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('img/top.png');
  background-size: cover; /* 画像を要素に合わせて拡大縮小 */
  background-position: center; /* 画像の中央を表示 */
  z-index: -1; /* コンテンツの後ろに配置 */
}
.hero .container {
    position: relative;
    z-index: 10;
    max-width: 56rem;
    text-align: center;
}
.hero__title {
    color: var(--dark);
    font-feature-settings:"palt";
    line-height: 1.2;
    font-weight: 900;
    margin-bottom: 3rem;
}

.hero__title h1 {
    font-size:clamp(3rem, 1.909rem + 5.45vw, 6rem);
}

.hero__title h3 {
    font-size: clamp(1.5rem, 1.318rem + 0.91vw, 2rem);
    color: var(--dark);
}

.hero__title span { color: var(--primary); }                

.hero__subtitle {
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 2.5rem;
    max-width: 48rem;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}
.hero__actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    justify-content: center;
}
.hero__actions .btn {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* Problem Section */
.problem {
    padding: 5rem 0;
    background-color: var(--light);
}
.section-header {
    max-width: 56rem;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    margin-bottom: 4rem;
}
.section-title {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1rem;
}
.section-title span { color: var(--primary); }
.section-subtitle {
    font-size: 1.125rem;
    color: var(--medium);
}
.problem-grid {
    display: grid;
    gap: 2rem;
    max-width: 72rem;
    margin: auto;
}

/* Card */
.card {
    background-color: white;
    padding: 2rem;
    border-radius: 1.5rem;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -2px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}
.card:hover {
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.07), 0 4px 6px -4px rgba(0,0,0,0.07);
    transform: translateY(-0.5rem);
}
.card__icon-wrapper {
    width: 4rem; height: 4rem; border-radius: 0.75rem; display: flex; align-items: center; justify-content: center; margin-bottom: 1.5rem;
}
.card__icon {
    font-size: 1.875rem;
}
.card__title {
    font-size: 1.5rem;
    font-weight: 700; 
    color: var(--dark); 
    margin-bottom: 1rem;
}
.card__list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    color: var(--medium);
}
.card__list-item {
    display: flex;
    align-items: flex-start;
    font-size:0.8rem;
}
.card__list-item i {
    margin-top: 0.375rem;
    margin-right: 0.75rem;
}

/* Solution Section */
.solution {
    padding: 4rem 0;
    background-color: white;
}
.solution__box {
    max-width: 56rem;
    margin: auto;
    text-align: center;
    padding: 2.5rem;
}
.solution__title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1rem;
}
.solution__title span { color: var(--primary); }
.solution__text {
    font-size: 1.125rem;
    color: var(--medium);
    line-height: 1.7;
}

.solutionimg {
    margin:2rem 0;
    border-radius: 1.5rem;
}

/* Services Section */
.services {
    padding: 3rem 0;
    background-image: linear-gradient(to bottom, #eff6ff, #dbeafe);
}

.services-grid {
    display: grid;
    gap: 2rem;
}
.service-card {
    display: flex;
    flex-direction: column;
    gap:0.5rem;
}

.service__image img {
    width:80%;
    height:auto;
}

.service__title_text {
    display: flex;
    flex-direction: column;    
}


.service-card__text {
    flex-grow: 1;
    text-align: justify;
    text-align-last: left;
    color: var(--medium);
}
.service-card__link {
    font-weight: 600;
    color: var(--primary);
    margin-top: auto;
    transition: color 0.2s;
}
.service-card__link:hover { color: var(--secondary); }
.service-card__link .fas {
    margin-left: 0.25rem;
    transition: transform 0.2s;
}
.service-card__link:hover .fas { transform: translateX(4px); }

/* Strengths Section */
.strengths {
    padding: 5rem 0;
    background-color: white;
}
.strengths__grid {
    display: flex;
    flex-direction: column;
    gap: 5rem;
}
.strength-item {
    display: grid;
    gap: 3rem;
    align-items: center;
}
.strength-item__tag {
    display: inline-block;
    background-color: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    font-family: var(--font-inter);
}
.strength-item__title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1.5rem;
    line-height: 1.3;
}
.strength-item__text {
    font-size: 1.125rem;
    color: var(--medium);
    margin-bottom: 1.5rem;
    line-height: 1.7;
    text-align: justify;
    text-align-last: left;    
}
.strength-item__list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.strength-item__list-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--medium);
    font-weight: 600;
}
.strength-item__list-item i {
    font-size: 1rem;
    color: var(--primary);
}
.strength-item__image-box {
    position: relative;
    padding: 2rem;
    border-radius: 1.5rem;
}
.strength-item__image-box--blue {
    background-image: linear-gradient(to bottom right, #eff6ff, #dbeafe);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}
.tech-card {
    background-color: rgba(255,255,255,0.7);
    padding: 1.5rem;
    border-radius: 0.75rem;
    text-align: center;
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(4px);
    font-size: 1.2rem;
}
.tech-card i {
    font-size: 1.875rem;
    margin-bottom: 0.75rem;
}
.tech-card div {
    font-weight: 600;
    color: var(--dark);
}
.partner-logos {
    display: flex;
    align-items: center;
    gap: 2rem;
}
.partner-logos img {
    height: 2rem;
}
.summit-image-wrapper {
    background-color: white;
    border-radius: 0.75rem;
    overflow: hidden;
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
    transform: scale(1);
    transition: transform 0.5s ease;
}

/*
.summit-image-wrapper:hover {
    transform: scale(1.05);
}
*/

.summit-image-wrapper p {
    padding: 1rem;
    text-align: center;
    font-size: 0.875rem;
    color: var(--medium);
}
.roi-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}
.roi-card {
    padding: 1.5rem;
    border-radius: 0.75rem;
    text-align: center;
}
.roi-card--primary {
    background-color: rgba(37, 99, 235, 0.05);
    border: 1px solid rgba(37, 99, 235, 0.2);
}
.roi-card--success {
    background-color: rgba(16, 185, 129, 0.05);
    border: 1px solid rgba(16, 185, 129, 0.2);
}
.roi-card__value {
    font-family: var(--font-inter);
    font-weight: 700;
    font-size: 1.875rem;
    margin-bottom: 0.25rem;
}
.roi-card__label {
    color: var(--medium);
    font-weight: 700;
}
.position-map-wrapper {
    padding: 1.5rem;
    background-image: linear-gradient(to bottom right, var(--light), #e5e7eb);
    border-radius: 1.5rem;
}
.position-map__title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
    text-align: center;
    margin-bottom: 1.5rem;
}
.position-map {
    position: relative;
    background-color: white;
    padding: 1rem;
    border-radius: 0.75rem;
    aspect-ratio: 1 / 1;
    background-image: linear-gradient(to right, #e5e7eb 1px, transparent 1px), linear-gradient(to bottom, #e5e7eb 1px, transparent 1px);
    background-size: 50% 50%;
}
.position-map__axis {
    position: absolute;
    inset: 0;
}
.position-map__axis::before {
    content: ''; position: absolute; background-color: #9ca3af;
}
.position-map__axis.x-axis::before { left: 0; right: 0; top: 50%; height: 2px; transform: translateY(-50%); }
.position-map__axis.y-axis::before { top: 0; bottom: 0; left: 50%; width: 2px; transform: translateX(-50%); }
.position-map__label {
    position: absolute;
    font-size: 0.875rem;
}
.position-map__label.top { top: 0.5rem; left: 50%; transform: translateX(-50%); font-weight: 700; color: var(--primary); }
.position-map__label.bottom { bottom: 0.5rem; left: 50%; transform: translateX(-50%); font-weight: 600; color: var(--medium); }
.position-map__label.left { left: 0.5rem; top: 50%; transform: translateY(-50%) rotate(-90deg); transform-origin: center; font-weight: 600; color: var(--medium); }
.position-map__label.right { right: 0.5rem; top: 50%; transform: translateY(-50%) rotate(90deg); transform-origin: center; font-weight: 700; color: var(--primary); }
.position-map__competitor {
    position: absolute;
    width: 0.75rem;
    height: 0.75rem;
    background-color: rgba(100, 116, 139, 0.5);
    border-radius: 9999px;
}
.position-map__competitor-label {
    position: absolute;
    bottom: 30%;
    left: 30%;
    color: var(--medium);
    font-weight: 600;
    font-size: 0.875rem;
}
.position-map__nekpro {
    position: absolute;
    top: 15%;
    right: 15%;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.position-map__nekpro-icon {
    width: 3rem; height: 3rem; background-color: var(--primary); border-radius: 0.75rem; display: flex; align-items: center; justify-content: center; color: white; font-weight: bold; font-family: var(--font-inter); font-size: 1.5rem; box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1); border: 2px solid white;
}
.position-map__nekpro-label {
    font-weight: 700;
    color: var(--primary);
    margin-top: 0.5rem;
}

/* Case Studies Section */
.cases {
    padding: 5rem 0;
    background-image: linear-gradient(to bottom, #eff6ff, #dbeafe);
}
.cases-grid {
    display: grid;
    gap: 2rem;
    max-width: 64rem;
    margin: auto;
}
.case-card {
    background-color: white;
    border-radius: 1.5rem;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -2px rgba(0,0,0,0.05);
    overflow: hidden;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}
.case-card:hover {
    transform: translateY(-0.5rem);
    border-color: var(--primary);
}
.case-card__content {
    padding: 2rem;
}
.case-card__title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--dark);
    text-align: center;
    margin-bottom: 0.5rem;
}
.case-card__subtitle {
    color: var(--medium);
    font-size: 0.875rem;
    text-align: center;
    margin-bottom: 1.5rem;
}
.case-card__comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    text-align: center;
}
.case-card__comparison-label {
    font-size: 0.875rem;
    color: var(--medium);
    margin-bottom: 0.5rem;
    font-weight: 600;
}
.case-card__comparison-label--after { color: var(--primary); }
.case-card__data-box {
    border-radius: 0.75rem;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.case-card__data-box--before { background-color: #FFFFFF; border: 1px solid #dcdcdc; }
.case-card__data-box--after { background-color: rgba(37, 99, 235, 0.05); border: 1px solid var(--primary); }
.case-card__data-value {
    font-family: var(--font-inter);
    font-weight: 700;
    font-size: 1.125rem;
}
.case-card__data-value span { font-size: 0.875rem; font-family: var(--font-noto); font-weight: 500; }
.case-card__data-label {
    color: var(--medium);
    font-size: 0.875rem;
}

.aftercpa::before {
  content: "CPA"; 
}

.case-badge {
  display: inline-block;
  background-color: var(--success);
  color: white;
  font-size: 0.8rem;  
  font-weight:bold;
  padding: 0.5em 1em;      /* 内側余白 */
  border-radius: 9999px;     /* 丸みを最大に */
  line-height: 0.7;            /* 高さ調整 */
  margin:1em 0;
}

.case-card__footer {
    padding: 1.5rem;
    text-align: center;
    color: white;
}
.case-card__footer--primary { background-image: linear-gradient(to right, var(--primary), var(--secondary)); }
.case-card__footer--success { background-image: linear-gradient(to right, var(--success), #059669); }
.case-card__footer-label {
    font-size: 1.125rem;
}
.case-card__footer-value {
    font-family: var(--font-inter);
    font-weight: 700;
    font-size: 2.25rem;
}
.case-card__footer-value span {
    font-size: 1.5rem;
    margin-left: 0.25rem;
}

/* CTA Section */

.cta-box {
  background-image: url('./img/ctabg.png');
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center center;
  min-height: 50vh;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.cta-text-content {
  color: white;
  padding: 1rem;
  max-width: 90%;
  text-align: center;
}

.cta-text-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    font-feature-settings:"palt";
}
.cta-text-content p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.5;
    margin-bottom:1.5rem;
}


.cta-box__btn {
    padding: 1rem 2rem;
    background-color: white;
    color: var(--primary);
}
.cta-box__btn:hover {
    background-color: #f3f4f6;
    transform: scale(1.05);
}


/* Footer */
.footer {
    color: var(--medium);
}
.footer .container {
    padding:2rem 0;
}
.footer__grid {
    display: flex;
    justify-content: center;
    gap: 2rem;
}

.footer-nav__list {
    margin-bottom: 1rem;
}

.footer__bottom {
    padding-top: 1rem;
    border-top: 1px solid #dcdcdc;
    text-align: center;
    font-size: 0.7rem;
}

/* Scroll-to-top Button */
.scroll-to-top {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    width: 3rem;
    height: 3rem;
    background-color: rgba(37, 99, 235, 0.9);
    color: white;
    border-radius: 9999px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}
.scroll-to-top:hover {
    background-color: var(--secondary);
    transform: scale(1.1);
}
.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

/* Responsive Styles */
@media (min-width: 640px) { /* sm */
    .hero__actions {
        flex-direction: row;
    }
    
}
@media (min-width: 768px) { /* md */
    .main-nav {
        display: flex;
        align-items: center;
        gap: 2rem;
    }
    .mobile-menu-btn, .mobile-menu {
        display: none;
    }
    .hero {
        padding-top: 12rem;
        padding-bottom: 8rem;
    }
    .hero__subtitle { font-size: 1.25rem; }
    .section-title { font-size: 2.25rem; }
    .problem-grid { grid-template-columns: repeat(2, 1fr); }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .strength-item { grid-template-columns: repeat(2, 1fr); }
    .strength-item__content--right { order: 2; }
    .strength-item__title { font-size: 1.875rem; }
    .cases-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) { /* lg */
    .problem-grid { grid-template-columns: repeat(3, 1fr); }
    .service-card { flex-direction:row;}
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .cta-text-content { padding: 5rem;}
}