/* Variables */
:root {
    --color-brand: #ee827c;
    --color-brand-light: #fff0f0;
    --color-brand-dark: #d66a64;
    --text-main: #333333;
    --text-light: #666666;
    --text-lighter: #9ca3af;
    --bg-gray: #f9fafb;
    --font-base: 'Noto Sans JP', sans-serif;
    --shadow-soft: 0 4px 20px -2px rgba(0, 0, 0, 0.05);
    --shadow-card: 0 10px 30px -5px rgba(0, 0, 0, 0.08);
}

/* Reset & Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-base);
    color: var(--text-main);
    line-height: 1.8;
    letter-spacing: 0.02em;
    background-color: #fff;
}

a {
    text-decoration: none;
    color: inherit;
    transition: 0.3s;
}

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

/* Utility Classes */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

@media (min-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }
}

.hidden {
    display: none !important;
}

.hidden-sp {
    display: none;
}
@media (min-width: 768px) {
    .hidden-sp { display: block; }
    .hidden-pc { display: none; }
}

.text-center { text-align: center; }
.text-brand { color: var(--color-brand); }
.font-bold { font-weight: 700; }
.mb-lg { margin-bottom: 2rem; }
@media (min-width: 768px) { .mb-lg { margin-bottom: 4rem; } }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 9999px;
    font-weight: 700;
    transition: all 0.3s;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--color-brand);
    color: white;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    gap: 0.8rem;
}
.btn-primary:hover {
    background-color: var(--color-brand-dark);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.btn-outline {
    border: 1px solid var(--color-brand);
    color: var(--color-brand);
}
.btn-outline:hover {
    background-color: var(--color-brand-light);
}

.btn-white {
    background-color: white;
    color: var(--color-brand);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}
.btn-white:hover {
    background-color: #f9fafb;
    transform: translateY(-4px);
}

.btn-sm { padding: 0.625rem 1.25rem; font-size: 0.875rem; }
.btn-lg { padding: 0.875rem 2.5rem; font-size: 1rem; }
.btn-xl { padding: 1rem 2.5rem; font-size: 1rem; width: 100%; }

@media (min-width: 768px) {
    .btn-lg { font-size: 1.125rem; }
    .btn-xl { padding: 1.25rem 4rem; font-size: 1.125rem; width: auto; }
}

.shadow-hover:hover {
    transform: translateY(-4px);
}

/* Header */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    z-index: 50;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.header-inner {
    height: 4rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

@media (min-width: 768px) {
    .header-inner { height: 5rem; }
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-image {
    width: 120px;
}
@media (min-width: 768px) { .logo-image { width: 157px; } }

.desktop-nav {
    display: none;
}
@media (min-width: 1024px) {
    .desktop-nav {
        display: flex;
        align-items: center;
        gap: 2rem;
    }
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-light);
    position: relative;
}
.nav-link:hover { color: var(--color-brand); }
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-brand);
    transition: width 0.3s;
}
.nav-link:hover::after { width: 100%; }

.nav-buttons {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-left: 0.5rem;
}

/* Mobile Menu */
.mobile-menu-btn {
    display: block;
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--text-light);
    cursor: pointer;
}
@media (min-width: 1024px) { .mobile-menu-btn { display: none; } }

.mobile-nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: white;
    border-top: 1px solid #f3f4f6;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    max-height: 80vh;
    overflow-y: auto;
}
@media (min-width: 1024px) { .mobile-nav-menu { display: none !important; } }

.mobile-nav-inner {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.mobile-nav-link {
    display: block;
    padding: 0.75rem 0;
    border-bottom: 1px solid #f3f4f6;
    font-weight: 500;
    color: #374151;
}

.mobile-nav-btn-primary {
    display: block;
    background-color: var(--color-brand);
    color: white;
    text-align: center;
    padding: 0.75rem;
    border-radius: 0.5rem;
    font-weight: 700;
    margin-top: 0.5rem;
}

.mobile-nav-btn-outline {
    display: block;
    border: 1px solid var(--color-brand);
    color: var(--color-brand);
    text-align: center;
    padding: 0.75rem;
    border-radius: 0.5rem;
    font-weight: 700;
}

/* Hero Section */
.hero-section {
    position: relative;
    padding-top: 7rem;
    padding-bottom: 4rem;
    background: linear-gradient(rgba(255,255,255,0.95), rgba(255,255,255,0.75)), url('images/bg_mv.jpg');
    background-size: cover;
    background-position: center;
    overflow: hidden;
}
@media (min-width: 768px) {
    .hero-section { padding-top: 11rem; padding-bottom: 9rem; }
}

.hero-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2.5rem;
    position: relative;
    z-index: 10;
}
@media (min-width: 768px) {
    .hero-container { flex-direction: row; justify-content: space-between; gap: 2rem; padding-right: 0;}
}

.hero-content {
    width: 100%;
    text-align: center;
}
@media (min-width: 768px) {
    .hero-content { width: 57%; text-align: left; }
}

.hero-badge {
    display: inline-block;
    color: #1f2937;
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: 1.5rem;
    letter-spacing: 0.05em;
}
@media (min-width: 768px) {
    .hero-badge { font-size: 2rem; margin-bottom: 2rem; line-height: 3rem; }
}

.hero-title {
    font-size: 2.3rem;
    font-weight: 900;
    line-height: 1.25;
    color: #111827;
    margin-bottom: 1.5rem;
}
@media (min-width: 768px) {
    .hero-title { font-size: 3rem; margin-bottom: 2rem; }
}
@media (min-width: 1024px) {
    .hero-title { font-size: 3.75rem; }
}

.highlight-underline {
    position: relative;
    display: inline-block;
    padding-bottom: 0.25rem;
    border-bottom: 4px solid rgba(238, 130, 124, 0.4);
    margin-top: 0.5rem;
    z-index: 10;
    color: var(--color-brand);
}
@media (min-width: 768px) {
    .highlight-underline { border-bottom-width: 8px; }
}

.hero-desc {
    font-size: 1rem;
    color: var(--text-light);
    font-weight: 500;
    margin-bottom: 1.5rem;
    line-height: 1.7;
}
@media (min-width: 768px) {
    .hero-desc { font-size: 1.125rem; line-height: 2; }
}

.hero-cta {
    padding-top: 1rem;
    display: flex;
    justify-content: center;
}
@media (min-width: 768px) {
    .hero-cta { justify-content: flex-start; padding-top: 1.5rem; }
}

.hero-visual {
    width: 100%;
    position: relative;
}
@media (min-width: 768px) {
    .hero-visual { width: 48%; max-width: none; }
}

.device-mockup-wrapper {
    background-color: white;
    border-radius: 1rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    padding: 1.5rem;
    border: 1px solid #f3f4f6;
    position: relative;
    z-index: 10;
}
@media (min-width: 768px) {
    .device-mockup-wrapper { padding: 2rem; }
}

.mockup-header { text-align: center; }

.mockup-icon-circle {
    width: 3.5rem;
    height: 3.5rem;
    background-color: rgba(238, 130, 124, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}
.mockup-icon-circle i { font-size: 1.5rem; color: var(--color-brand); }
@media (min-width: 768px) {
    .mockup-icon-circle { width: 4rem; height: 4rem; margin-bottom: 1.5rem; }
    .mockup-icon-circle i { font-size: 1.875rem; }
}

.mockup-title { font-weight: 700; color: #1f2937; margin-bottom: 0.5rem; font-size: 1.125rem; }
@media (min-width: 768px) { .mockup-title { font-size: 1.25rem; } }

.mockup-subtitle { font-size: 0.75rem; color: #6b7280; margin-bottom: 1rem; }
@media (min-width: 768px) { .mockup-subtitle { font-size: 0.875rem; margin-bottom: 1.5rem; } }

.phone-frame {
    margin: 0 auto;
    width: 8rem;
    height: 15rem;
    background-color: #111827;
    border-radius: 1.5rem;
    border: 4px solid #111827;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    position: relative;
}
@media (min-width: 768px) {
    .phone-frame { width: 10rem; height: 18rem; border-radius: 2rem; border-width: 6px; }
}

.phone-screen {
    width: 100%;
    height: 100%;
    background-color: white;
    display: flex;
    flex-direction: column;
    padding: 1.5rem 0.5rem 0;
    align-items: center;
}
@media (min-width: 768px) { .phone-screen { padding-top: 2rem; padding-left: 0.75rem; padding-right: 0.75rem; } }

.screen-img-box {
    width: 100%;
    height: 6rem;
    background-color: #f3f4f6;
    border-radius: 0.5rem;
    margin-bottom: 0.75rem;
    overflow: hidden;
}
@media (min-width: 768px) { .screen-img-box { height: 8rem; } }
.screen-img-box img { width: 100%; height: 100%; object-fit: cover; }

.screen-line { height: 0.375rem; background-color: #f3f4f6; border-radius: 0.25rem; margin-bottom: 0.5rem; align-self: flex-start; }
@media (min-width: 768px) { .screen-line { height: 0.5rem; } }
.w-75 { width: 75%; }
.w-50 { width: 50%; margin-bottom: 1rem; }
@media (min-width: 768px) { .w-50 { margin-bottom: 1.5rem; } }

.screen-btn {
    width: 100%;
    height: 2rem;
    background-color: var(--color-brand);
    border-radius: 0.5rem;
    color: white;
    font-size: 0.625rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}
@media (min-width: 768px) { .screen-btn { height: 2.5rem; font-size: 0.75rem; } }

.decor-circle { position: absolute; border-radius: 50%; }
.decor-1 { top: -1rem; right: -1rem; width: 5rem; height: 5rem; background-color: rgba(238, 130, 124, 0.05); filter: blur(24px); }
.decor-2 { bottom: -1.5rem; left: -1.5rem; width: 8rem; height: 8rem; background-color: rgba(238, 130, 124, 0.1); filter: blur(40px); }
@media (min-width: 768px) {
    .decor-1 { width: 6rem; height: 6rem; }
    .decor-2 { width: 10rem; height: 10rem; }
}

/* Common Section */
.section { padding: 4rem 0; }
@media (min-width: 768px) { .section { padding: 6rem 0; } }
.section-gray { background-color:#eff1f2; }

.section-header { text-align: center; margin-bottom: 3rem; }
@media (min-width: 768px) { .section-header { margin-bottom: 4rem; } }

.section-sub-en {
    color: var(--color-brand);
    font-weight: 700;
    letter-spacing: 0.1em;
    font-size: 1rem;
    text-transform: uppercase;
    display: block;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1f2937;
}
@media (min-width: 768px) { .section-title { font-size: 3rem; } }

.title-underline {
    width: 3rem;
    height: 4px;
    background-color: var(--color-brand);
    margin: 1rem auto 0;
    border-radius: 9999px;
}
@media (min-width: 768px) { .title-underline { width: 4rem; margin-top: 1.5rem; } }

/* Issues Section */
.issues-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    max-width: 72rem;
    margin: 2rem auto 0;
}
@media (min-width: 768px) {
    .issues-grid { grid-template-columns: repeat(3, 1fr); margin-top: 0; }
}

.issue-card-wrapper {
    position: relative;
    height: 100%;
    margin-top: 1.5rem;
}
@media (min-width: 768px) { .issue-card-wrapper { margin-top: 0; } }

.issue-card {
    background-color: white;
    padding: 3.5rem 2rem 2rem;
    border-radius: 2rem;
    box-shadow: var(--shadow-card);
    border: 1px solid #f3f4f6;
    position: relative;
    z-index: 10;
    text-align: center;
    height: 100%;
    transition: 0.3s;
}


.floating-icon {
    position: absolute;
    top: -2.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 5rem;
    height: 5rem;
    background-color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 4px solid #f9fafb;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transition: 0.3s;
}
.floating-icon i {
    font-size: 1.875rem;
    color: var(--color-brand);
}
@media (min-width: 768px) { .floating-icon i { font-size: 2.25rem; } }

.issue-card p {
    font-weight: 700;
    font-size: 1rem;
    color: #374151;
    line-height: 1.6;
}
@media (min-width: 768px) { .issue-card p { font-size: 1.125rem; } }

.bubble-dot {
    position: absolute;
    background-color: white;
    border-radius: 50%;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    display: none;
}
@media (min-width: 768px) { .bubble-dot { display: block; } }
.dot-lg { bottom: -1rem; right: 3rem; width: 1.5rem; height: 1.5rem; }
.dot-sm { bottom: -2rem; right: 1.5rem; width: 0.75rem; height: 0.75rem; }

/* Solution Box */
.solution-area {
    margin-top: 4rem;
    text-align: center;
}
@media (min-width: 768px) { .solution-area { margin-top: 6rem; } }

.solution-box {
    position: relative;
    background-color: white;
    border: 4px solid var(--color-brand);
    border-radius: 1rem;
    padding: 1.5rem;
    max-width: 100%;
    margin: 0 auto;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}
@media (min-width: 768px) {
    .solution-box { border-radius: 9999px; padding: 2.5rem 5rem; }
}

.solution-content { position: relative; z-index: 10; }

.solution-tag {
    color: var(--color-brand);
    font-weight: 700;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}
@media (min-width: 768px) { .solution-tag { font-size: 1.25rem; } }

.solution-title {
    font-size: 1.5rem;
    font-weight: 900;
    color: #1f2937;
    line-height: 1.25;
}
@media (min-width: 768px) { .solution-title { font-size: 2.25rem; } }

.solution-title-logo {
    font-size: 2.5rem;
    margin-left: 0.8rem;
    margin-right: 0.8rem;
}
@media (min-width: 768px) { .solution-title-logo { font-size: 3rem; } }

.solution-decor-icon {
    position: absolute;
    bottom: -1.5rem;
    right: -1.5rem;
    font-size: 8rem;
    color: rgba(238, 130, 124, 0.05);
    opacity: 0.5;
}
.solution-arrow {
    position: absolute;
    top: 1rem;
    color: rgba(238, 130, 124, 0.2);
    animation: bounce 1s infinite;
}
.arrow-left { left: 1rem; }
.arrow-right { right: 1rem; animation-delay: 0.1s; }
@keyframes bounce {
    0%, 100% { transform: translateY(-25%); animation-timing-function: cubic-bezier(0.8, 0, 1, 1); }
    50% { transform: translateY(0); animation-timing-function: cubic-bezier(0, 0, 0.2, 1); }
}

/* Features */
.features-list {
    display: flex;
    flex-direction: column;
    gap: 4rem;
    max-width: 72rem;
    margin: 0 auto;
}
@media (min-width: 768px) { .features-list { gap: 6rem; } }

.feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}
@media (min-width: 768px) {
    .feature-item { flex-direction: row; gap: 5rem; }
    .feature-item.reverse { flex-direction: row-reverse; }
}

.feature-img-box {
    width: 100%;
    position: relative;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-card);
    aspect-ratio: 4/3;
}
@media (min-width: 768px) { .feature-img-box { width: 50%; } }

.feature-img-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s;
}

.feature-label {
    position: absolute;
    top: 0;
    background-color: var(--color-brand);
    color: white;
    font-weight: 700;
    font-size: 1.125rem;
    padding: 0.5rem 1.25rem;
    z-index: 10;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}
@media (min-width: 768px) { .feature-label { font-size: 1.25rem; padding: 0.75rem 1.25rem; } }
.label-left { left: 0; border-bottom-right-radius: 1rem; }
.label-right { right: 0; border-bottom-left-radius: 1rem; }

.feature-text-box { width: 100%; padding: 0 0.5rem; }
@media (min-width: 768px) { .feature-text-box { width: 50%; padding: 0; } }

.feature-head {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 1rem;
    display: flex;
    align-items: flex-start;
    line-height: 1.25;
}
@media (min-width: 768px) { .feature-head { font-size: 1.875rem; margin-bottom: 1.5rem; } }

.feature-icon {
    display: block;
    color: var(--color-brand);
    margin-right: 0.5rem;
    margin-top: 0.25rem;
    font-size: 1rem;
}
@media (min-width: 768px) { .feature-icon { margin-right: 0.75rem; font-size: 1.125rem; } }

.feature-desc {
    color: #4b5563;
    font-size: 0.875rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}
@media (min-width: 768px) { .feature-desc { font-size: 1rem; line-height: 2; margin-bottom: 2rem; } }

.feature-check-list {
    background-color: #f9fafb;
    padding: 1.25rem;
    border-radius: 0.75rem;
    border: 1px solid #f3f4f6;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
@media (min-width: 768px) { .feature-check-list { padding: 1.5rem; } }

.check-item {
    font-weight: 700;
    color: #374151;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
}
@media (min-width: 768px) { .check-item { font-size: 1rem; } }
.check-item i { color: var(--color-brand); margin-right: 0.75rem; }

/* Achievements */
.achievements-section {
    padding: 4rem 0;
    color: var(--text-main);
    position: relative;
    overflow: hidden;
}
@media (min-width: 768px) { .achievements-section { padding: 6rem 0; } }
.achievements-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(#666 1px, transparent 1px);
    background-size: 24px 24px;
    opacity: 0.2;
}

.relative-z { position: relative; z-index: 10; }

.achievements-content {
    gap: 1rem;
}
@media (min-width: 768px) { .achievements-content { width: 90%; margin: 0 auto; } }

.stat-box {
    text-align: center;
}
@media (min-width: 768px) { .stat-box { width: 700px; margin: 0 auto; } }

.stat-icon-wrap {
    width: 50px;
}

.stat-headline-wrap{
    display: flex;
    justify-content: center;
    margin-bottom: 24px;
}

.stat-icon-wrap {
    display: flex;
    justify-content: center;
    color: var(--color-brand-light);
}
@media (min-width: 768px) { .stat-icon-wrap {} }
.stat-icon-wrap i { font-size: 3rem; opacity: 0.8; }
@media (min-width: 768px) { .stat-icon-wrap i { font-size: 4.5rem; } }

.stat-label {
    color: #9ca3af;
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: 0.05em;
}

.stat-sub-wrap { display: flex; align-items: center;}

.stat-sub { font-size: 1.25rem; font-weight: 500; color: var(--text-main); }
@media (min-width: 768px) { .stat-sub { font-size: 1.5rem; } }

.stat-number { font-size: 3.75rem; font-weight: 700; letter-spacing: -0.025em; line-height: 1; color: var(--color-brand); display: flex; align-items: center; }
@media (min-width: 768px) { .stat-number { font-size: 4.5rem; display: flex; align-items: center;} }

.stat-number .unit { font-size: 1.5rem; font-weight: 500; }
@media (min-width: 768px) { .stat-number span { font-size: 1.875rem; } }

.stat-divider { width: 90%; height: 1px; background-color: #bec4cc; margin: 2rem auto; }
@media (min-width: 768px) { .stat-divider { width: 100%; height: 1px; margin: 3rem; } }

.stat-ul-wrap{
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    margin-bottom: 24px;
}

.stat-li-wrap{
    display: flex;
    align-items: center;
    margin-right: 16px;
    font-weight: bold;
    font-size: 14px;
}
@media (min-width: 768px) { .stat-li-wrap { font-size: 16px;} }

.i-pin{
    width: 20px;
    margin-right: 8px;
}

.andmore{
    color: var(--color-brand);
    font-weight: bold;
    margin-bottom: 16px;
    font-size: 1.5rem;
}

.btn-stat-list{
    padding: 5px 16px;
    border: solid 2px var(--color-brand);
    border-radius: 30px;
    background-color: #ffffff;
}

.btn-stat-list:hover{
    background-color: var(--color-brand);
    color: #ffffff;
}

.patent-box { text-align: center; }
@media (min-width: 768px) {.patent-box { display: flex; align-items: center; justify-content: center;}}

.patent-cert-wrap-image {
    display: inline-block;
    padding: 0.5rem;
    border-radius: 0.25rem;
    margin-bottom: 1rem;
    width: 80%;
}
@media (min-width: 768px) {.patent-cert-wrap-image { width: 300px; }}

.patent-cert-wrap-text {
    display: inline-block;
    padding: 0.5rem;
    border-radius: 0.25rem;
    margin-bottom: 1rem;
    width: 80%;
}
@media (min-width: 768px) {.patent-cert-wrap-text { width: 400px; }}
.patent-cert {
    width: 8rem;
    aspect-ratio: 3/4;
    border: 1px solid #e5e7eb;
    background-color: #f9fafb;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}
.cert-inner {
    width: 100%;
    padding: 0.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.cert-seal {
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    border: 2px solid rgba(238, 130, 124, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 1rem;
}
.cert-seal i { font-size: 1.5rem; color: var(--color-brand); }
.cert-line { background-color: #d1d5db; height: 4px; margin-bottom: 0.25rem; }
.l1 { width: 5rem; margin-top: 1rem; background-color: #d1d5db; }
.l2 { width: 6rem; background-color: #e5e7eb; }
.l3 { width: 4rem; background-color: #e5e7eb; }

.cert-ribbon { position: absolute; top: 0.5rem; right: 0.5rem; color: #eab308; }
.patent-title { font-size: 1.25rem; font-weight: 700;     line-height: 2rem; }

/* Steps */
.section-sub-text {
    color: #6b7280;
    font-size: 0.875rem;
}
@media (min-width: 768px) { .section-sub-text { font-size: 1rem; margin-top: 1rem; } }

.steps-container { position: relative; max-width: 64rem; margin: 0 auto; }

.step-connect-line {
    position: absolute;
    top: 2.5rem;
    left: 2rem;
    width: 2px;
    height: 80%;
    background-color: #e5e7eb;
    z-index: -1;
}
@media (min-width: 768px) {
    .step-connect-line {
        top: 2.5rem;
        left: 50%;
        transform: translateX(-50%);
        width: 80%;
        height: 2px;
    }
}

.steps-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
}
@media (min-width: 768px) {
    .steps-grid { grid-template-columns: repeat(3, 1fr); padding-left: 0; }
}

.step-item {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.step-number {
    width: 4rem;
    height: 4rem;
    background-color: white;
    border: 1px solid #e5e7eb;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    z-index: 10;
    margin-bottom: 0.8rem;
    color: var(--color-brand);
}
@media (min-width: 768px) {
    .step-number { width: 5rem; height: 5rem; font-size: 1.5rem; margin-bottom: 2rem; }
}
.step-number.active {
    background-color: var(--color-brand);
    color: white;
    box-shadow: 0 10px 15px -3px rgba(238, 130, 124, 0.3);
}

.step-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #1f2937;
}
@media (min-width: 768px) { .step-title { font-size: 1.125rem; margin-bottom: 1.5rem; } }

.step-card {
    width: 80%;
    height: auto;
    overflow: hidden;
    position: relative;
}
@media (min-width: 768px) { .step-card { width: 15rem; height: auto; } }

.step-card-inner { height: 100%; width: 100%; padding: 0.75rem; }
.bg-light { background-color: #f9fafb; }
.flex-col { display: flex; flex-direction: column; gap: 0.75rem; }
.flex-center { display: flex; flex-direction: column; align-items: center; justify-content: center; }

.skeleton-bar { height: 0.75rem; background-color: #e5e7eb; border-radius: 0.25rem; margin-bottom: 1rem; }
.skeleton-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }
.skeleton-box { background-color: white; border: 1px solid #f3f4f6; aspect-ratio: 1/1; border-radius: 0.5rem; }
.skeleton-input { height: 2rem; width: 100%; background-color: white; border: 1px solid #e5e7eb; border-radius: 0.375rem; }
.mt-sm { margin-top: 0.5rem; }
.skeleton-btn { margin-top: auto; background-color: var(--color-brand); height: 2.25rem; width: 100%; border-radius: 0.375rem; display: flex; align-items: center; justify-content: center; color: white; font-size: 0.75rem; font-weight: 500; }
.success-icon { width: 4rem; height: 4rem; background-color: #f0fdf4; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin-bottom: 0.75rem; }
.success-icon i { color: #22c55e; font-size: 1.5rem; }
.success-text { text-align: center; font-weight: 700; color: #374151; font-size: 0.75rem; }

/* Movie */
.video-container {
    max-width: 56rem;
    aspect-ratio: 16 / 9;
    margin: 0 auto;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}
.video-placeholder {
    aspect-ratio: 16/9;
    background-color: black;
    position: relative;
    cursor: pointer;
}
.video-placeholder img { width: 100%; height: 100%; object-fit: cover; opacity: 0.5; }
.video-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    text-align: center;
    padding: 1rem;
}
.video-icon { font-size: 3rem; opacity: 0.9; margin-bottom: 1rem; transition: 0.3s; }
@media (min-width: 768px) { .video-icon { font-size: 4.5rem; } }
.video-placeholder:hover .video-icon { transform: scale(1.1); }
.video-overlay p { font-weight: 700; font-size: 1rem; text-shadow: 0 2px 4px rgba(0,0,0,0.5); }
@media (min-width: 768px) { .video-overlay p { font-size: 1.125rem; } }

/* Voices */


/* コンテナ：モバイルでは横スクロール、PCではグリッド */
.voice-scroll-container {
    display: flex;
    gap: 1.5rem;
    padding-bottom: 3rem;
    overflow-x: auto;
    
    /* スクロールスナップの設定 */
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
}

/* スクロールバー非表示 (no-scrollbar) */
.no-scrollbar {
    -ms-overflow-style: none;  /* IE and Edge */
    scrollbar-width: none;  /* Firefox */
}
.no-scrollbar::-webkit-scrollbar {
    display: none; /* Chrome, Safari and Opera */
}

/* タブレット以上でのレイアウト変更 */
@media (min-width: 768px) {
    .voice-scroll-container {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
        overflow-x: visible;
        padding-bottom: 0;
    }
}
@media (min-width: 1024px) {
    .voice-scroll-container {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* アイテム（カード全体） */
.voice-scroll-item {
    scroll-snap-align: center;
    flex-shrink: 0;
    width: 80%; /* w-80 (320px) */
    display: flex;
    flex-direction: column;
}

@media (min-width: 768px) {
    .voice-scroll-item {
        width: auto; /* PCでは幅制限解除 */
    }
}

/* 吹き出し部分 */
.voice-bubble {
    background-color: #ffe5a9;
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-soft);
    border: 1px solid #f3f4f6;
    position: relative;
    margin-bottom: 1.5rem;
    color: #374151;
    font-size: 0.875rem;
    line-height: 1.7;
    height: 100%; /* 高さを揃える */
}

/* 吹き出しのしっぽ (左下) */
.voice-bubble::after {
    content: '';
    position: absolute;
    bottom: -10px; /* 位置調整 */
    left: 20px;    /* 左からの位置 */
    width: 0;
    height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-top: 10px solid #f3f4f6; /* 枠線の色に合わせる（簡易版） */
    /* ※正確にボーダー付き吹き出しを作るのは複雑なため、
       ここでは簡易的に背景色と同じ色で塗りつぶす手法をとっています。
       より厳密なボーダー表現が必要な場合はSVGかborderトリックを使います */
}
/* 吹き出しのしっぽ（内側の白） */
.voice-bubble::before {
    content: '';
    position: absolute;
    bottom: -8px; 
    left: 20px;
    width: 0;
    height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-top: 10px solid  #ffe5a9;
    z-index: 1;
}

/* ユーザー情報部分 */
.voice-user {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-left: 1rem;
}

/* アイコン */
.voice-avatar {
    width: 3rem;
    height: 3rem;
    background-color: rgba(238, 130, 124, 0.1); /* brand color alpha */
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(238, 130, 124, 0.2);
    padding: 0.25rem;
}

.voice-avatar img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    opacity: 0.8;
}

.voice-role {
    font-size: 0.75rem;
    font-weight: 700;
    color: #6b7280;
}


/* --- Voice Integrated Section --- */
/* SP (Mobile First) Styles: Horizontal Scroll */
.voice-integrated-list {
    display: flex;
    gap: 1.5rem;
    padding-bottom: 3rem;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
}

.no-scrollbar {
    -ms-overflow-style: none;
    scrollbar-width: none;
}
.no-scrollbar::-webkit-scrollbar {
    display: none;
}

.voice-unit {
    scroll-snap-align: center;
    flex-shrink: 0;
    width: 80%; /* w-80 (320px) */
    display: flex;
    flex-direction: column-reverse; /* SP: Content (Bubble) Top, Face (User) Bottom */
}

.voice-face {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-left: 1rem;
}

.voice-avatar-lg {
    width: 5rem;
    height: 5rem;
    background-color: rgba(238, 130, 124, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(238, 130, 124, 0.2);
    flex-shrink: 0;
    overflow: hidden;
}

.voice-avatar-lg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    /* opacity: 0.8; */
}

.voice-name-sp {
    font-size: 0.75rem;
    font-weight: 700;
    color: #6b7280;
    display: block; /* Show on SP */
}

.voice-content-wrapper {
    margin-bottom: 1rem;
}

.voice-name-pc {
    display: none; /* Hide on SP */
}

/* SP Bubble Style */
.voice-bubble-body {
    background-color: var(--color-brand-light);
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-soft);
    border: 1px solid #ffe0e0;
    position: relative;
    color: #374151;
    font-size: 0.875rem;
    line-height: 1.7;
    height: 100%;
}

.voice-bubble-body::after { /* SP Tail */
    content: '';
    position: absolute;
    bottom: -10px;
    left: 20px;
    width: 0;
    height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-top: 10px solid #ffe0e0;
}
.voice-bubble-body::before { /* SP Tail Inner */
    content: '';
    position: absolute;
    bottom: -8px; 
    left: 20px;
    width: 0;
    height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-top: 10px solid var(--color-brand-light);
    z-index: 1;
}

/* PC (Desktop) Styles: Chat Layout */
@media (min-width: 768px) {
    .voice-integrated-list {
        display: flex;
        flex-direction: column;
        gap: 2rem;
        max-width: 900px;
        margin: 0 auto;
        overflow: visible;
        padding-bottom: 0;
    }

    .voice-unit {
        width: 100%;
        display: flex;
        flex-direction: row; /* PC: Face Left, Content Right */
        align-items: flex-start;
        gap: 1.5rem;
    }

    .voice-unit.voice-right {
        flex-direction: row-reverse; /* PC Right: Content Left, Face Right */
    }

    .voice-face {
        margin-left: 0;
        display: block;
    }

    .voice-avatar-lg {
        width: 100px;
        height: 100px;
        background-color: white;
        border: 2px solid #eee;
        padding: 0;
        box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    }

    .voice-name-sp {
        display: none; /* Hide SP Name */
    }

    .voice-content-wrapper {
        max-width: 70%;
        display: flex;
        flex-direction: column;
        margin-bottom: 0;
    }

    .voice-unit.voice-right .voice-content-wrapper {
        align-items: flex-end;
    }

    .voice-name-pc {
        display: block; /* Show PC Name */
        font-size: 0.85rem;
        color: #888;
        margin-bottom: 0.5rem;
        font-weight: 700;
    }

    /* PC Bubble Styles (Reset SP Styles) */
    .voice-bubble-body {
        background-color: white; /* Left Bubble */
        padding: 1.5rem 2rem;
        border-radius: 1.5rem;
        box-shadow: 0 2px 15px rgba(0,0,0,0.05);
        font-size: 1rem;
        line-height: 1.8;
        color: #333;
        border: 1px solid #ffe0e0;
        border-top-left-radius: 0; /* Left Bubble Corner */
        margin-bottom: 0;
    }
    
    /* Reset SP Tail */
    .voice-bubble-body::after { display: none; } 
    .voice-bubble-body::before { display: none; }

    /* PC Left Tail */
    .voice-unit.voice-left .voice-bubble-body {
        background-color: var(--color-brand-light);
    }
    .voice-unit.voice-left .voice-bubble-body::before { /* Re-add pseudo for PC */
        content: '';
        display: block;
        position: absolute;
        top: 0;
        left: -12px;
        bottom: auto; /* Reset */
        width: 0;
        height: 0;
        border-top: 15px solid var(--color-brand-light);
        border-left: 12px solid transparent;
        border-right: none;
        z-index: 1;
    }

    /* PC Right Bubble */
    .voice-unit.voice-right .voice-bubble-body {
        background-color: var(--color-brand-light);
        border-color: #ffe0e0;
        border-radius: 1.5rem;
        border-top-right-radius: 0; /* Right Bubble Corner */
    }
    
    /* PC Right Tail */
    .voice-unit.voice-right .voice-bubble-body::before { /* Re-add pseudo for PC */
        content: '';
        display: block;
        position: absolute;
        top: 0;
        right: -12px;
        left: auto; /* Reset */
        bottom: auto; /* Reset */
        width: 0;
        height: 0;
        border-top: 15px solid var(--color-brand-light);
        border-right: 12px solid transparent;
        border-left: none;
        z-index: 1;
    }
}

/* Contact */
.contact-section {
    padding: 4rem 0;
    background-color: #111827;
    color: white;
    position: relative;
    overflow: hidden;
}
@media (min-width: 768px) { .contact-section { padding: 6rem 0; } }

.contact-title { font-size: 1.5rem; font-weight: 700; margin-bottom: 1.5rem; }
@media (min-width: 768px) { .contact-title { font-size: 1.875rem; } }

.contact-desc {
    margin-bottom: 2rem;
    color: #9ca3af;
    max-width: 32rem;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
    font-size: 0.875rem;
}
@media (min-width: 768px) { .contact-desc { margin-bottom: 2.5rem; font-size: 1rem; max-width: 34rem;} }

.contact-button-outline{
    margin-left: 0px;
    margin-top: 16px;
    color: white;
    border: white 1px solid;
}
@media (min-width: 768px) { .contact-button-outline { margin-left: 10px; margin-top: 10px;} }

.contact-button-outline:hover{
    background-color: white;
    color: var(--color-brand);
}

.contact-buttons i{
    margin-left: 10px;
}

/* FAQ */
.max-w-md { max-width: 48rem; margin: 0 auto; }
.faq-list { display: flex; flex-direction: column; gap: 0.75rem; }
@media (min-width: 768px) { .faq-list { gap: 1rem; } }

.faq-item {
    background-color: white;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    transition: 0.3s;
}
.faq-item[open] { box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05); }

.faq-summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 700;
    cursor: pointer;
    list-style: none;
    padding: 1.25rem;
    color: #1f2937;
    font-size: 0.875rem;
    transition: color 0.2s;
}
@media (min-width: 768px) { .faq-summary { padding: 1.5rem; font-size: 1rem; } }
.faq-summary:hover { color: var(--color-brand); }
.faq-summary::-webkit-details-marker { display: none; }

.faq-q-wrap { display: flex; align-items: flex-start; gap: 0.75rem; }
@media (min-width: 768px) { .faq-q-wrap { align-items: center; gap: 1rem; } }
.faq-q-wrap .text-brand { flex-shrink: 0; }

.faq-icon { color: #9ca3af; transition: transform 0.3s; flex-shrink: 0; margin-left: 0.5rem; }
.faq-item[open] .faq-icon { transform: rotate(180deg); }

.faq-answer {
    color: #4b5563;
    padding: 0 1.25rem 1.25rem 2.5rem;
    line-height: 1.7;
    font-size: 0.875rem;
}
@media (min-width: 768px) { .faq-answer { padding: 0 1.5rem 1.5rem 3rem; } }

.faq-note { text-align: center; margin-top: 1.5rem; font-size: 0.75rem; color: #9ca3af; }

/* Anniversary */
.anniversary-section {
    padding: 8rem 0;
    background-image: url('images/bg_4th.webp');
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    position: relative;
}
@media (max-width: 768px) { .anniversary-section { background-attachment: scroll; padding: 4rem 0; } }

.overlay { position: absolute; inset: 0; background-color: rgba(0, 0, 0, 0.6); }

.anniversary-content { display: inline-block; position: relative; }
.anniversary-title {
    font-size: 1.875rem;
    font-weight: 600;
    margin-bottom: 2.5rem;
    line-height: 1.4;
    color: white;
    letter-spacing: 0.025em;
    text-shadow: 0 4px 6px rgba(0,0,0,0.1);
}
@media (min-width: 768px) { .anniversary-title { font-size: 3rem; } }
.text-brand-lg { color: var(--color-brand); font-size: 4.5rem; }
@media (min-width: 768px) { .text-brand-lg { font-size: 4.5rem; } }

.btn-transparent {
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    color: white;
    padding: 0.75rem 2rem;
    font-size: 1rem;
}
@media (min-width: 768px) { .btn-transparent { padding: 0.75rem 3rem; } }
.btn-transparent:hover { background-color: white; color: var(--color-brand); }

/* Additional Links */
.section-title-sm { font-size: 1.5rem; font-weight: 700; color: #1f2937; }
@media (min-width: 768px) { .section-title-sm { font-size: 1.875rem; } }

.links-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    max-width: 56rem;
    margin: 0 auto;
}
@media (min-width: 768px) { .links-grid { grid-template-columns: 1fr 1fr; gap: 2rem; } }

.link-card {
    display: block;
    background-color: white;
    border-radius: 0.75rem;
    box-shadow: var(--shadow-soft);
    overflow: hidden;
    border: 1px solid #f3f4f6;
    transition: 0.5s;
}
.link-card:hover { box-shadow: var(--shadow-card); }

.link-img-box {
    height: 12rem;
    background-color: #f3f4f6;
    position: relative;
    overflow: hidden;
}
@media (min-width: 768px) { .link-img-box { height: 14rem; } }
.link-img-box img { width: 100%; height: 100%; object-fit: cover; transition: 0.7s; }
.link-card:hover .link-img-box img { transform: scale(1.05); }
.link-overlay { position: absolute; inset: 0; background-color: rgba(17, 24, 39, 0.1); transition: 0.3s; }
.link-card:hover .link-overlay { background-color: transparent; }

.link-content { padding: 1.5rem; }
@media (min-width: 768px) { .link-content { padding: 2rem; } }

.link-title { font-weight: 700; font-size: 1rem; margin-bottom: 0.5rem; color: #1f2937; transition: 0.3s; }
@media (min-width: 768px) { .link-title { font-size: 1.125rem; margin-bottom: 0.75rem; } }
.link-card:hover .link-title { color: var(--color-brand); }

.link-desc { font-size: 0.75rem; color: #6b7280; line-height: 1.7; }
@media (min-width: 768px) { .link-desc { font-size: 0.875rem; } }

.read-more { display: inline-block; margin-top: 1rem; color: var(--color-brand); font-weight: 700; font-size: 0.75rem; }
@media (min-width: 768px) { .read-more { font-size: 0.875rem; } }

/* Final CTA */
.final-cta { padding: 4rem 0; background-color: var(--color-brand); color: white; text-align: center; }
@media (min-width: 768px) { .final-cta { padding: 6rem 0; background-image: url(images/furusatozu_lg_white_symbol.svg);        background-repeat: no-repeat; background-position: right; background-size: 460px; } }

.final-cta-title { font-size: 1.5rem; font-weight: 700; margin-bottom: 1rem; }
@media (min-width: 768px) { .final-cta-title { font-size: 1.875rem; margin-bottom: 1.5rem; } }

.final-cta-desc { font-size: 1rem; margin-bottom: 2rem; opacity: 0.9; max-width: 42rem; margin-left: auto; margin-right: auto; line-height: 1.7; }
@media (min-width: 768px) { .final-cta-desc { font-size: 1.125rem; margin-bottom: 3rem; } }

.final-cta .contact-button-primary {
    background-color: white;
    color: var(--color-brand);
}

.final-cta .contact-button-primary:hover {
    background-color: var(--color-brand-dark);
    color: white;
    border: solid 1px white;
}

.final-cta .contact-button-outline:hover {
    background-color: var(--color-brand-dark);
    color: white;
}

/* Footer */
.site-footer {
    background-color: #111827;
    color: #6b7280;
    padding: 0.5rem 0 7rem;
    text-align: center;
    font-size: 0.75rem;
}
@media (min-width: 768px) { .site-footer { padding: 0.5rem 0; } }
.site-footer p { margin-bottom: 0.5rem; letter-spacing: 0.05em; }

/* Mobile Fixed CTA */
.mobile-cta-fixed {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(4px);
    box-shadow: 0 -5px 10px rgba(0, 0, 0, 0.1);
    padding: 1rem;
    z-index: 50;
    border-top: 1px solid #f3f4f6;
    transition: transform 0.3s;
}
@media (min-width: 768px) { .mobile-cta-fixed { display: none; } }

.translate-y-full { transform: translateY(100%); }

.mobile-cta-btn {
    display: block;
    width: 100%;
    background-color: var(--color-brand);
    color: white;
    text-align: center;
    font-weight: 700;
    font-size: 1.125rem;
    padding: 0.75rem;
    border-radius: 9999px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}