/* ==========================================================================
   UOK Landing Page - Styles
   ========================================================================== */

/* CSS Variables */
:root {
    --color-primary: #FF4D6A;
    --color-primary-dark: #E8445F;
    --color-primary-light: #FFF0F3;
    --color-secondary: #4CD964;
    --color-secondary-dark: #3DBF54;
    --color-accent: #FFD60A;
    --color-purple: #A78BFA;
    --color-orange: #FF9500;
    --color-success: #4CD964;
    --color-danger: #FF4D6A;
    --color-text: #2D3436;
    --color-text-light: #636E72;
    --color-text-muted: #B2BEC3;
    --color-bg: #FFFFFF;
    --color-bg-alt: #FFF9F9;
    --color-bg-dark: #2D3436;
    --color-border: #FFE0E0;
    --gradient-primary: linear-gradient(135deg, #FF4D6A 0%, #FF7088 100%);
    --gradient-secondary: linear-gradient(135deg, #4CD964 0%, #5EE077 100%);
    --gradient-fun: linear-gradient(135deg, #FF4D6A 0%, #FFD60A 50%, #4CD964 100%);
    --gradient-hero: linear-gradient(135deg, #FFF0F3 0%, #FFFBE6 50%, #E6FFED 100%);
    --font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --container-max: 1200px;
    --header-height: 70px;
    --border-radius: 20px;
    --border-radius-sm: 12px;
    --border-radius-lg: 32px;
    --shadow-sm: 0 4px 6px rgba(255,77,106,0.1);
    --shadow-md: 0 8px 20px rgba(255,77,106,0.15);
    --shadow-lg: 0 12px 40px rgba(255,77,106,0.2);
    --shadow-pop: 0 10px 30px rgba(76,217,100,0.2);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--color-primary-dark);
}

ul {
    list-style: none;
}

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.4;
    color: var(--color-secondary);
}

h1 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.125rem, 2vw, 1.5rem); }

.section-title {
    text-align: center;
    margin-bottom: 1rem;
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-light);
    margin-bottom: 3rem;
    font-size: 1.125rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 36px;
    font-size: 1rem;
    font-weight: 700;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 6px 20px rgba(255,77,106,0.4);
}

.btn-primary:hover {
    color: white;
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 10px 30px rgba(255,77,106,0.5);
}

.btn-secondary {
    background: white;
    color: var(--color-primary);
    border: 3px solid var(--color-primary);
}

.btn-secondary:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-4px);
}

.btn-large {
    padding: 20px 56px;
    font-size: 1.2rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: box-shadow var(--transition);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    height: 40px;
    width: auto;
}

.header-app-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-list a {
    color: var(--color-text);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition);
}

.nav-list a:hover {
    color: var(--color-primary);
}

.nav-cta {
    background: var(--gradient-primary);
    color: white !important;
    padding: 12px 24px;
    border-radius: 50px;
    box-shadow: 0 4px 15px rgba(255,77,106,0.3);
    transition: all var(--transition);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255,77,106,0.4);
    color: white !important;
}

.nav-lang {
    padding: 8px 16px;
    border: 2px solid var(--color-text-muted);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-muted) !important;
    transition: all var(--transition);
}

.nav-lang:hover {
    border-color: var(--color-primary);
    color: var(--color-primary) !important;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: all var(--transition);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Hero Section */
.hero {
    padding: calc(var(--header-height) + 60px) 0 0;
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255,214,10,0.3) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 20%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(76,217,100,0.2) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 8s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-30px) rotate(5deg); }
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    min-height: 80vh;
    padding-bottom: 120px;
}

/* Header Logo Animation */
.header-logo-animated {
    display: flex;
    align-items: flex-end;
    height: 40px;
}

.header-logo-text {
    font-size: 28px;
    font-weight: 800;
    color: #2D3436;
    letter-spacing: -1px;
    line-height: 1;
}

.header-logo-morph {
    width: 14px;
    height: 22px;
    margin-left: 1px;
    margin-bottom: 2px;
}

.header-logo-morph .morph-path {
    fill: none;
    stroke: var(--color-primary);
    stroke-width: 14;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.header-logo-morph .morph-dot {
    fill: var(--color-primary);
}

.header-logo-domain {
    font-size: 28px;
    font-weight: 800;
    color: var(--color-secondary);
    letter-spacing: -1px;
    line-height: 1;
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.header-logo-domain.visible {
    opacity: 1;
    transform: translateX(0);
}

.hero-content h1 {
    margin-bottom: 1.5rem;
}

.hero-content .highlight {
    color: var(--color-primary);
    position: relative;
    background: linear-gradient(transparent 60%, rgba(255,214,10,0.5) 60%);
    padding: 0 4px;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.hero-tagline {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 2rem;
}

.badge {
    display: inline-block;
    padding: 8px 18px;
    background: var(--gradient-primary);
    color: white;
    font-size: 0.85rem;
    font-weight: 700;
    border-radius: 50px;
    box-shadow: 0 4px 15px rgba(255,77,106,0.3);
    animation: pulse 2s ease-in-out infinite;
}

.badge:nth-child(2) {
    background: var(--gradient-secondary);
    box-shadow: 0 4px 15px rgba(76,217,100,0.3);
    animation-delay: 0.3s;
}

.badge:nth-child(3) {
    background: linear-gradient(135deg, var(--color-orange) 0%, #FFB347 100%);
    box-shadow: 0 4px 15px rgba(255,159,67,0.3);
    animation-delay: 0.6s;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

/* 装飾シェイプ（背景のブロブ） */
.hero-decoration {
    position: absolute;
    border-radius: 50%;
    filter: blur(40px);
    opacity: 0.3;
    z-index: 0;
}

.hero-decoration-1 {
    width: 300px;
    height: 300px;
    background: var(--color-primary);
    top: -50px;
    right: -30px;
    animation: blobFloat1 6s ease-in-out infinite;
}

.hero-decoration-2 {
    width: 200px;
    height: 200px;
    background: var(--color-secondary);
    bottom: -30px;
    left: -20px;
    animation: blobFloat2 7s ease-in-out infinite;
}

@keyframes blobFloat1 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-20px, 20px) scale(1.1); }
}

@keyframes blobFloat2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(20px, -15px) scale(1.05); }
}

.hero-decoration-3 {
    width: 150px;
    height: 150px;
    background: var(--color-accent);
    top: 50%;
    right: -60px;
    animation: blobFloat3 5s ease-in-out infinite;
}

@keyframes blobFloat3 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-15px, -20px) scale(1.15); }
}

/* 画像ラッパー（グラデーションボーダー + 傾き） */
.hero-image-wrapper {
    position: relative;
    z-index: 2;
    padding: 4px;
    border-radius: calc(var(--border-radius-lg) + 4px);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 50%, var(--color-accent) 100%);
    transform: rotate(2deg);
    box-shadow:
        0 25px 50px rgba(255, 77, 106, 0.25),
        0 15px 30px rgba(76, 217, 100, 0.15);
    animation: heroFloat 4s ease-in-out infinite;
}

.hero-image-wrapper img {
    display: block;
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    background: white;
}

/* Hero Slideshow */
#hero-slideshow-img {
    transition: opacity 0.5s ease-in-out;
}

@keyframes heroFloat {
    0%, 100% {
        transform: rotate(2deg) translateY(0);
    }
    50% {
        transform: rotate(2deg) translateY(-15px);
    }
}

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    line-height: 0;
}

.hero-wave svg {
    width: 100%;
    height: 120px;
}

/* Wave fill is set via SVG gradient */

/* Problem Section */
.problem {
    padding: 80px 0;
    background: white;
    position: relative;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 3rem;
}

.problem-card {
    text-align: center;
    padding: 32px 24px;
    background: white;
    border-radius: var(--border-radius-lg);
    transition: transform var(--transition), box-shadow var(--transition);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.problem-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-fun);
    transform: scaleX(0);
    transition: transform var(--transition);
}

.problem-card:hover::before {
    transform: scaleX(1);
}

.problem-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-border);
}

.problem-icon {
    margin-bottom: 20px;
}

.problem-card h3 {
    font-size: 1.125rem;
    margin-bottom: 12px;
}

.problem-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

/* Solution Section */
.solution {
    padding: 100px 0;
    background: var(--gradient-primary);
    color: white;
    position: relative;
    overflow: hidden;
}

.solution::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 300px;
    height: 300px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
}

.solution::after {
    content: '';
    position: absolute;
    bottom: -50px;
    left: -50px;
    width: 200px;
    height: 200px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
}

.solution-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.solution .section-title {
    color: white;
}

.solution-text {
    font-size: 1.3rem;
    margin-bottom: 3rem;
    opacity: 0.95;
}

.solution-visual {
    display: flex;
    justify-content: center;
}

.solution-visual img {
    margin: 0 auto;
    width: 280px;
    height: 280px;
    object-fit: cover;
    object-position: center;
    border-radius: 50%;
    box-shadow:
        0 0 0 8px rgba(255,255,255,0.3),
        0 0 0 16px rgba(255,255,255,0.15),
        0 30px 60px rgba(0,0,0,0.3);
    animation: alarmPulse 2s ease-in-out infinite;
}

/* ピピッ、ピピッ のアラームリズムアニメーション */
@keyframes alarmPulse {
    0% { transform: scale(1); }
    5% { transform: scale(1.08); }
    10% { transform: scale(1); }
    15% { transform: scale(1.08); }
    20% { transform: scale(1); }
    100% { transform: scale(1); }
}

.solution-visual img:hover {
    animation-play-state: paused;
}

/* How It Works Section */
.how-it-works {
    padding: 100px 0;
    background: linear-gradient(180deg, #FFF9F9 0%, #FFFBF5 50%, #F0FFFD 100%);
    position: relative;
}

/* How It Works Overview Image */
.how-it-works-overview {
    margin: 2rem auto 3rem;
    max-width: 100%;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.how-it-works-overview img {
    width: 100%;
    height: auto;
    display: block;
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px;
    margin-top: 3rem;
}

.step {
    text-align: center;
    position: relative;
}

.step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 24px;
    right: -24px;
    width: 48px;
    height: 3px;
    background: var(--gradient-fun);
    border-radius: 2px;
}

.step-number {
    width: 56px;
    height: 56px;
    background: var(--gradient-primary);
    color: white;
    font-size: 1.5rem;
    font-weight: 800;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    box-shadow: 0 8px 20px rgba(255,77,106,0.3);
    position: relative;
}

.step:nth-child(2) .step-number {
    background: var(--gradient-secondary);
    box-shadow: 0 8px 20px rgba(76,217,100,0.3);
}

.step:nth-child(3) .step-number {
    background: linear-gradient(135deg, var(--color-orange) 0%, #FFB347 100%);
    box-shadow: 0 8px 20px rgba(255,159,67,0.3);
}

.step-image {
    margin-bottom: 24px;
}

.step-image img {
    margin: 0 auto;
    max-width: 125px;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition);
}

.step-image img:hover {
    transform: translateY(-8px) rotate(2deg);
}

.step h3 {
    margin-bottom: 12px;
}

.step p {
    color: var(--color-text-light);
}

/* Alert Box */
.alert-box {
    display: flex;
    gap: 20px;
    background: #fff8e6;
    border: 1px solid #f0d78c;
    border-radius: var(--border-radius);
    padding: 24px 32px;
    margin-top: 48px;
    align-items: flex-start;
}

.alert-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.alert-content h4 {
    font-size: 1.125rem;
    margin-bottom: 8px;
    color: #8a6d3b;
}

.alert-content p {
    color: #8a6d3b;
    margin: 0;
}

/* Features Section */
.features {
    padding: 100px 0;
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 3rem;
}

.feature-card {
    padding: 36px;
    background: white;
    border-radius: var(--border-radius-lg);
    text-align: center;
    transition: all var(--transition);
    border: 2px solid var(--color-border);
    position: relative;
}

.feature-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.feature-card:nth-child(1):hover { border-color: #FF4D6A; }
.feature-card:nth-child(2):hover { border-color: #4CD964; }
.feature-card:nth-child(3):hover { border-color: #FFD60A; }
.feature-card:nth-child(4):hover { border-color: #A78BFA; }
.feature-card:nth-child(5):hover { border-color: #FF9F43; }
.feature-card:nth-child(6):hover { border-color: #FF4D6A; }

.feature-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: var(--color-primary-light);
    border-radius: 50%;
    transition: all var(--transition);
}

.feature-card:nth-child(1) .feature-icon { background: #FFF0F3; }
.feature-card:nth-child(2) .feature-icon { background: #E8FFF9; }
.feature-card:nth-child(3) .feature-icon { background: #FFFBE6; }
.feature-card:nth-child(4) .feature-icon { background: #F3EEFF; }
.feature-card:nth-child(5) .feature-icon { background: #FFF3E6; }
.feature-card:nth-child(6) .feature-icon { background: #FFF0F3; }

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    color: var(--color-text);
}

.feature-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* Target Users Section */
.target-users {
    padding: 100px 0;
    background: linear-gradient(180deg, #FFFBF5 0%, #FFF9F9 100%);
}

.user-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 48px;
    margin-top: 3rem;
}

.user-card {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 48px;
    box-shadow: var(--shadow-md);
    border: 3px solid transparent;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.user-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: var(--gradient-primary);
}

.user-card:last-child::before {
    background: var(--gradient-secondary);
}

.user-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.user-card-wide {
    grid-column: 1 / -1;
}

.user-card-wide::before {
    background: linear-gradient(135deg, var(--color-orange) 0%, #FFB347 100%);
}

.user-list-horizontal {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

@media (max-width: 768px) {
    .user-list-horizontal {
        grid-template-columns: 1fr;
    }
}

.user-card-header {
    text-align: center;
    margin-bottom: 24px;
}

.user-icon {
    margin-bottom: 16px;
}

.user-icon svg {
    margin: 0 auto;
}

.user-subtitle {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

.user-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.user-list li {
    padding: 12px 16px;
    background: var(--color-bg-alt);
    border-radius: var(--border-radius-sm);
    font-size: 0.95rem;
    position: relative;
    padding-left: 40px;
}

.user-list li::before {
    content: "✓";
    position: absolute;
    left: 16px;
    color: var(--color-primary);
    font-weight: 600;
}

/* Privacy Section */
.privacy {
    padding: 100px 0;
    background: white;
}

.privacy-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.privacy-intro {
    font-size: 1.125rem;
    color: var(--color-text-light);
    margin-bottom: 3rem;
}

.privacy-features {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
}

.privacy-item {
    text-align: center;
}

.privacy-icon {
    margin-bottom: 12px;
    display: flex;
    justify-content: center;
}

.privacy-item p {
    font-size: 1rem;
}

/* Pricing Section */
.pricing {
    padding: 100px 0;
    background: linear-gradient(180deg, #FFF0F3 0%, #FFF9E6 100%);
    position: relative;
}

.price-card {
    max-width: 480px;
    margin: 3rem auto 0;
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 56px 48px;
    text-align: center;
    box-shadow: var(--shadow-lg);
    position: relative;
    border: 3px solid var(--color-border);
}

.price-card::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 150px;
    height: 150px;
    background: radial-gradient(circle, rgba(255,214,10,0.3) 0%, transparent 70%);
    border-radius: 50%;
}

.price-card::after {
    content: '';
    position: absolute;
    bottom: -30px;
    left: -30px;
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, rgba(76,217,100,0.2) 0%, transparent 70%);
    border-radius: 50%;
}

.price-badge {
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-fun);
    color: white;
    padding: 10px 32px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
    box-shadow: 0 6px 20px rgba(255,77,106,0.3);
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-5px); }
}

.price-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    max-width: 900px;
    margin: 0 auto;
    padding-top: 24px;
}

.price-card {
    max-width: none;
    margin: 0;
}

.price-plan-name {
    font-size: 1.3rem;
    color: var(--color-text);
    margin-bottom: 8px;
}

.price-amount {
    font-size: 4rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 16px 0;
    position: relative;
}

.price-amount-premium {
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    background-clip: text;
    font-size: 3rem;
}

.price-period {
    font-size: 1rem;
    font-weight: 500;
}

.price-card-premium {
    border-color: var(--color-secondary);
}

.price-card-premium::before {
    background: radial-gradient(circle, rgba(76,217,100,0.2) 0%, transparent 70%);
}

.price-badge-premium {
    background: var(--gradient-secondary);
    box-shadow: 0 6px 20px rgba(76,217,100,0.3);
}

.feature-note {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-left: 4px;
}

.feature-disabled {
    color: var(--color-text-muted);
}

.feature-disabled .cross {
    color: var(--color-danger);
}

.feature-highlight {
    color: var(--color-secondary);
}

.check {
    color: var(--color-success);
    margin-right: 4px;
}

.cross {
    margin-right: 4px;
}

.btn-coming-soon {
    opacity: 0.7;
    cursor: default;
    pointer-events: none;
}

.price-note {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-top: 32px;
}

@media (max-width: 768px) {
    .price-cards {
        grid-template-columns: 1fr;
    }

    .price-amount {
        font-size: 3.5rem;
    }

    .price-amount-premium {
        font-size: 2.5rem;
    }
}

.price-description {
    color: var(--color-text-light);
    margin-bottom: 24px;
}

.price-features {
    text-align: left;
    margin-bottom: 32px;
}

.price-features li {
    padding: 10px 0;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
}

.price-features li:last-child {
    border-bottom: none;
}

/* FAQ Section */
.faq {
    padding: 100px 0;
    background: white;
}

.faq-list {
    max-width: 800px;
    margin: 3rem auto 0;
}

.faq-item {
    border-bottom: 1px solid var(--color-border);
}

.faq-item summary {
    padding: 20px 40px 20px 0;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.05rem;
    position: relative;
    list-style: none;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: "+";
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--color-primary);
    transition: transform var(--transition);
}

.faq-item[open] summary::after {
    content: "−";
}

.faq-item p {
    padding: 0 0 20px;
    color: var(--color-text-light);
    line-height: 1.8;
}

/* Download Section */
.download {
    padding: 100px 0;
    background: var(--color-bg-alt);
    text-align: center;
}

.download-subtitle {
    color: var(--color-text-light);
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.store-badge img {
    height: 60px;
    width: auto;
    transition: transform var(--transition);
}

.store-badge:hover img {
    transform: scale(1.05);
}

.compatibility {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-bottom: 3rem;
}

/* Share Section */
.share-section {
    margin-top: 48px;
    padding-top: 48px;
    border-top: 1px solid var(--color-border);
}

.share-title {
    font-weight: 600;
    margin-bottom: 16px;
}

.share-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.share-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: all var(--transition);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.share-btn:hover {
    transform: translateY(-4px) scale(1.1);
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
    color: white;
}

.share-twitter {
    background: linear-gradient(135deg, #1DA1F2 0%, #0D8BD9 100%);
}

.share-facebook {
    background: linear-gradient(135deg, #1877F2 0%, #0D65D9 100%);
}

.share-line {
    background: linear-gradient(135deg, #00B900 0%, #009900 100%);
}

/* CTA Section */
.cta {
    padding: 120px 0;
    background: var(--gradient-primary);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
    border-radius: 50%;
}

.cta::after {
    content: '';
    position: absolute;
    bottom: -100px;
    left: 20%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255,214,10,0.2) 0%, transparent 60%);
    border-radius: 50%;
}

.cta h2 {
    color: white;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.cta p {
    font-size: 1.2rem;
    opacity: 0.95;
    margin-bottom: 2.5rem;
    position: relative;
    z-index: 1;
}

.cta .btn-primary {
    background: white;
    color: var(--color-primary);
    box-shadow: 0 8px 30px rgba(0,0,0,0.2);
    position: relative;
    z-index: 1;
}

.cta .btn-primary:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}

/* Footer */
.footer {
    background: var(--color-bg-dark);
    color: white;
    padding: 64px 0 32px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 64px;
    margin-bottom: 48px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-app-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.footer-logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    color: white;
    letter-spacing: -0.5px;
}

.footer-logo-accent {
    color: var(--color-primary);
}

.footer-brand p {
    margin-top: 16px;
    opacity: 0.8;
    font-size: 0.95rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.footer-column h4 {
    color: white;
    font-size: 1rem;
    margin-bottom: 16px;
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-column a {
    color: rgba(255,255,255,0.7);
    font-size: 0.95rem;
    transition: color var(--transition);
}

.footer-column a:hover {
    color: white;
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
}

.footer-bottom p {
    opacity: 0.6;
    font-size: 0.9rem;
}

/* ==========================================================================
   Responsive Styles
   ========================================================================== */

@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 32px;
    }

    .hero-tagline {
        justify-content: center;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-image {
        order: -1;
    }

    .hero-image-wrapper {
        max-width: 400px;
    }

    .hero-decoration-1 {
        width: 200px;
        height: 200px;
    }

    .hero-decoration-2 {
        width: 150px;
        height: 150px;
    }

    .hero-decoration-3 {
        width: 100px;
        height: 100px;
    }

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

    .steps {
        grid-template-columns: 1fr;
        gap: 64px;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }

    .nav-list {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: white;
        flex-direction: column;
        padding: 32px;
        gap: 24px;
        transform: translateX(100%);
        transition: transform var(--transition);
    }

    .nav-list.active {
        transform: translateX(0);
    }

    .nav-list a {
        font-size: 1.125rem;
    }

    .nav-cta {
        width: 100%;
        text-align: center;
        padding: 14px 20px;
    }

    .problem-grid {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .user-cards {
        grid-template-columns: 1fr;
    }

    .privacy-features {
        flex-direction: column;
        gap: 32px;
    }

    .alert-box {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        grid-template-columns: 1fr;
        gap: 24px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 15px;
    }

    .container {
        padding: 0 16px;
    }

    .btn {
        padding: 12px 24px;
        width: 100%;
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-image-wrapper {
        max-width: 320px;
        transform: rotate(1deg);
    }

    .hero-decoration-1,
    .hero-decoration-2,
    .hero-decoration-3 {
        display: none;
    }

    .price-card {
        padding: 32px 24px;
    }

    .price-amount {
        font-size: 3rem;
    }

    .download-buttons {
        flex-direction: column;
        align-items: center;
    }

    .share-buttons {
        gap: 12px;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content,
.hero-image {
    animation: fadeInUp 0.6s ease-out forwards;
}

.hero-image {
    animation-delay: 0.2s;
}

/* Print Styles */
@media print {
    .header,
    .hero-wave,
    .download-buttons,
    .share-section,
    .cta,
    .mobile-menu-btn {
        display: none !important;
    }

    body {
        font-size: 12pt;
    }

    .hero {
        padding-top: 20px;
    }
}

/* About 見守り・安否確認 Section */
.about-safety {
    padding: 100px 0;
    background: #FFFFFF;
}

.about-safety-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.about-safety-card {
    background: #FFF8F9;
    border: 1px solid #FFE0E6;
    border-radius: 16px;
    padding: 28px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.about-safety-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 28px rgba(255, 77, 106, 0.12);
}

.about-safety-card h3 {
    color: #FF4D6A;
    margin-bottom: 12px;
    font-weight: 700;
}

.about-safety-card p {
    line-height: 1.8;
    color: #444;
}

.about-safety-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.about-safety-list li {
    padding: 8px 0 8px 24px;
    position: relative;
    line-height: 1.7;
    color: #444;
}

.about-safety-list li::before {
    content: "✓";
    color: #FF4D6A;
    font-weight: 700;
    position: absolute;
    left: 0;
}

@media (max-width: 768px) {
    .about-safety {
        padding: 60px 0;
    }
    .about-safety-card {
        padding: 20px;
    }
}