:root {
    --color-bg: #FFFBFB;
    --color-bg-secondary: #FFF5F7;
    --color-text: #333333;
    --color-text-muted: #666666;
    --color-accent-pink: #F472B6;
    --color-accent-yellow: #FDE047;
    --color-accent-gold: #D4AF37;
    --font-serif: 'Noto Serif JP', serif;
    --font-sans: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.8;
    overflow-x: hidden;
}

/* 意図しない改行を防ぐクラス */
.nobrk {
    display: inline-block;
}

h1,
h2,
h3 {
    font-family: var(--font-serif);
    font-weight: 500;
    line-height: 1.4;
}

/* 高精細ゴールド（金箔） */
.text-gold {
    display: inline-block;
    font-weight: 600;
    background: linear-gradient(to right,
            #BF953F,
            #FCF6BA,
            #B38728,
            #FBF5B7,
            #AA771C);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    background-size: 200% auto;
    animation: shine 6s linear infinite;
}

@keyframes shine {
    to {
        background-position: 200% center;
    }
}

.text-accent {
    color: var(--color-accent-pink);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

.pc-only {
    display: block;
}

@media (max-width: 768px) {
    .pc-only {
        display: none;
    }
}

/* Hero Section */
.hero-section {
    position: relative;
    min-height: 100vh;
    padding: 120px 0 60px;
    display: flex;
    align-items: center;
    background: url('hero_bg_elegance.webp') no-repeat center center/cover;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 255, 255, 0.8) 50%, rgba(255, 255, 255, 0.2) 100%);
    z-index: 1;
}

@media (max-width: 992px) {
    .hero-overlay {
        background: rgba(255, 255, 255, 0.85);
    }
}

.hero-container {
    position: relative;
    z-index: 10;
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 40px;
    align-items: center;
}

@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        padding-top: 20px;
    }
}

.hero-title {
    font-size: 3.6rem;
    letter-spacing: 0.1em;
    margin-bottom: 24px;
    word-break: keep-all;
    overflow-wrap: break-word;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.2rem;
        letter-spacing: 0.05em;
        text-align: center;
    }
}

.hero-sub.decoration-line {
    font-size: 1.2rem;
    color: var(--color-accent-gold);
    font-weight: 700;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.hero-sub.decoration-line::before {
    content: '';
    width: 40px;
    height: 1px;
    background-color: var(--color-accent-gold);
}

@media (max-width: 768px) {
    .hero-sub.decoration-line {
        justify-content: center;
    }
}

.hero-lead {
    font-size: 1.15rem;
    margin-bottom: 40px;
    color: #444;
}

@media (max-width: 768px) {
    .hero-lead {
        text-align: center;
        font-size: 1rem;
    }
}

.hero-core-msg {
    max-width: 640px;
    margin-bottom: 32px;
    padding: 20px 24px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 12px;
    border-left: 4px solid var(--color-accent-gold);
}

.hero-core-msg .core-msg-title {
    font-family: var(--font-serif);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-accent-gold);
    margin-bottom: 8px;
    letter-spacing: 0.05em;
}

.hero-core-msg .core-msg-body {
    font-size: 0.95rem;
    line-height: 1.75;
    color: #444;
}

@media (max-width: 768px) {
    .hero-core-msg {
        padding: 16px;
        margin-bottom: 24px;
    }
    .hero-core-msg .core-msg-body {
        font-size: 0.9rem;
    }
}

.hero-features {
    list-style: none;
}

.hero-features li {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.hero-features i {
    color: var(--color-accent-gold);
}

/* CTA Box */
.hero-cta-box {
    background: #ffffff;
    padding: 8px;
    border-radius: 20px;
    box-shadow: 0 30px 60px -12px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(212, 175, 55, 0.15);
}

.cta-inner {
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 14px;
    padding: 40px 24px;
    text-align: center;
}

.cta-status {
    font-size: 0.75rem;
    padding: 4px 12px;
    background: var(--color-bg-secondary);
    color: var(--color-accent-pink);
    border-radius: 50px;
    font-weight: 700;
    margin-bottom: 16px;
    display: inline-block;
}

.cta-inner h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.cta-inner p {
    font-size: 0.95rem;
    color: #666;
    margin-bottom: 24px;
}

.registration-form-top,
.registration-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.email-input {
    padding: 16px;
    border-radius: 8px;
    border: 1px solid #ddd;
    font-size: 1rem;
    outline: none;
}

.cta-button {
    background: linear-gradient(135deg, #D4AF37, #FDE047);
    color: #333;
    padding: 16px;
    border-radius: 8px;
    border: none;
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    transition: 0.3s;
}

.cta-button:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

.shadow-gold {
    box-shadow: 0 10px 20px rgba(212, 175, 55, 0.3);
}

/* Step Section */
.step-section {
    padding: 100px 0;
    background-color: #fff;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.4rem;
    margin-bottom: 16px;
}

@media (max-width: 768px) {
    .section-title {
        font-size: 1.8rem;
    }
}

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

@media (max-width: 992px) {
    .step-grid {
        grid-template-columns: 1fr;
    }
}

.step-card {
    background: #FAFAFA;
    padding: 40px 24px;
    border-radius: 12px;
    text-align: center;
    position: relative;
    border: 1px solid #EEE;
}

.step-card.highlight {
    border: 2px solid var(--color-accent-pink);
    box-shadow: 0 15px 30px rgba(244, 114, 182, 0.1);
}

.step-label {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-accent-gold);
    color: #fff;
    padding: 4px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
}

.step-icon {
    font-size: 2.5rem;
    color: var(--color-accent-gold);
    margin-bottom: 20px;
}

.step-card h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
}

.step-desc {
    font-size: 0.95rem;
    color: #555;
    line-height: 1.6;
}

/* Problem Section */
.problem-section {
    padding: 100px 0;
    background-color: var(--color-bg-secondary);
}

.problem-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.problem-item {
    background: #fff;
    padding: 40px 24px;
    border-radius: 12px;
    text-align: center;
}

.problem-item i {
    font-size: 3rem;
    margin-bottom: 20px;
    background: linear-gradient(to bottom, #F472B6, #FDE047);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.problem-conclusion {
    text-align: center;
    font-size: 1.4rem;
    font-family: var(--font-serif);
}

/* Offer Section */
.offer-section {
    padding: 120px 0;
    text-align: center;
    background: url('hero_bg_elegance.webp') no-repeat center center/cover;
}

.offer-box {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(10px);
    max-width: 700px;
    margin: 0 auto;
    padding: 60px 24px;
    border-radius: 20px;
    border: 1px solid var(--color-accent-gold);
}

.offer-title {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: 0.8s ease-out;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.footer {
    padding: 40px 0;
    text-align: center;
    font-size: 0.9rem;
    color: #999;
    border-top: 1px solid #EEE;
}