/* ===================================
   Google AI研修 LP - Main Stylesheet
   ===================================
   Design System:
   - Primary: Google Blue #4285F4
   - Accent: Google Red #EA4335
   - Success: Google Green #34A853
   - Warning: Google Yellow #FBBC05
   - Dark: #1a1a2e
   - Light: #f8f9fa
   =================================== */

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

:root {
    --color-primary: #4285F4;
    --color-primary-dark: #1a73e8;
    --color-red: #EA4335;
    --color-red-dark: #c5221f;
    --color-green: #34A853;
    --color-green-dark: #1e8e3e;
    --color-yellow: #FBBC05;
    --color-yellow-dark: #f9a825;
    --color-dark: #1a1a2e;
    --color-dark-alt: #16213e;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-text-muted: #999999;
    --color-bg: #ffffff;
    --color-bg-light: #f8f9fa;
    --color-bg-dark: #1a1a2e;
    --color-border: #e0e0e0;
    --font-ja: 'Noto Sans JP', sans-serif;
    --font-en: 'Inter', sans-serif;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.15);
    --shadow-xl: 0 16px 60px rgba(0,0,0,0.2);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    scroll-padding-top: 80px;
}

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

img { max-width: 100%; height: auto; }
a { text-decoration: none; color: inherit; }

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.sp-only { display: none; }
.pc-only { display: inline; }

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

/* --- Scroll Animation --- */
[data-scroll] {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
[data-scroll].is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Section Utilities --- */
.section-label {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}
.section-label__number {
    font-family: var(--font-en);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.05em;
}
.section-label__text {
    font-family: var(--font-en);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text-muted);
}
.section-label--light .section-label__number {
    color: var(--color-yellow);
}
.section-label--light .section-label__text {
    color: rgba(255,255,255,0.6);
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 900;
    line-height: 1.4;
    margin-bottom: 20px;
}
.section-title--dark { color: var(--color-dark); }
.section-title--light { color: #fff; }

.section-lead {
    font-size: 1.05rem;
    color: var(--color-text-light);
    line-height: 2;
    margin-bottom: 48px;
}

.text-accent { color: var(--color-red); }
.text-google--b { color: #4285F4; }
.text-google--r { color: #EA4335; }
.text-google--y { color: #FBBC05; }
.text-google--g { color: #34A853; }

.text-google {
    font-family: var(--font-en);
    font-weight: 700;
    font-size: 1.1em;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-family: var(--font-ja);
    font-weight: 700;
    font-size: 1rem;
    padding: 14px 32px;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}
.btn--primary {
    background: linear-gradient(135deg, var(--color-red), #d93025);
    color: #fff;
    box-shadow: 0 4px 20px rgba(234, 67, 53, 0.35);
}
.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(234, 67, 53, 0.45);
}
.btn--outline {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255,255,255,0.4);
}
.btn--outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: #fff;
}
.btn--large {
    font-size: 1.1rem;
    padding: 18px 40px;
    border-radius: var(--radius-lg);
}
.btn--small {
    font-size: 0.9rem;
    padding: 10px 24px;
}
.btn--full { width: 100%; }

/* ===================================
   HEADER
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}
.header.is-scrolled {
    border-bottom-color: var(--color-border);
    box-shadow: var(--shadow-sm);
}
.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.header__logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.1rem;
}
.header__logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-green));
    color: #fff;
    border-radius: 10px;
    font-size: 1rem;
}
.header__nav {
    display: flex;
    align-items: center;
    gap: 28px;
}
.header__nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-light);
    transition: var(--transition);
    position: relative;
}
.header__nav-link:hover {
    color: var(--color-primary);
}
.header__nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition);
}
.header__nav-link:hover::after {
    width: 100%;
}
.header__nav-link--cta {
    background: var(--color-primary);
    color: #fff !important;
    padding: 8px 20px;
    border-radius: var(--radius-sm);
    font-weight: 600;
}
.header__nav-link--cta::after { display: none; }
.header__nav-link--cta:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
}
.header__hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}
.header__hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-dark);
    border-radius: 2px;
    transition: var(--transition);
}
.header__hamburger.is-active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.header__hamburger.is-active span:nth-child(2) {
    opacity: 0;
}
.header__hamburger.is-active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

@media (max-width: 900px) {
    .header__hamburger { display: flex; }
    .header__nav {
        position: fixed;
        top: 72px;
        left: 0;
        width: 100%;
        background: #fff;
        flex-direction: column;
        padding: 24px;
        gap: 0;
        border-bottom: 1px solid var(--color-border);
        transform: translateY(-120%);
        transition: var(--transition);
        box-shadow: var(--shadow-md);
    }
    .header__nav.is-open {
        transform: translateY(0);
    }
    .header__nav-link {
        display: block;
        width: 100%;
        padding: 14px 0;
        font-size: 1rem;
        border-bottom: 1px solid var(--color-bg-light);
    }
    .header__nav-link::after { display: none; }
    .header__nav-link--cta {
        margin-top: 12px;
        text-align: center;
    }
}

/* ===================================
   HERO SECTION
   =================================== */
.hero {
    position: relative;
    padding: 140px 0 80px;
    background: linear-gradient(160deg, #f0f4ff 0%, #e8f0fe 30%, #fff5f5 70%, #fff 100%);
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.hero__bg-shapes {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}
.hero__shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.08;
}
.hero__shape--1 {
    width: 500px;
    height: 500px;
    background: var(--color-primary);
    top: -200px;
    right: -100px;
}
.hero__shape--2 {
    width: 300px;
    height: 300px;
    background: var(--color-red);
    bottom: -100px;
    left: -50px;
}
.hero__shape--3 {
    width: 200px;
    height: 200px;
    background: var(--color-yellow);
    top: 30%;
    left: 50%;
}
.hero__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}
.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #fff;
    border: 1px solid var(--color-border);
    padding: 8px 18px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}
.hero__badge i { font-size: 1.1rem; }
.hero__title {
    margin-bottom: 24px;
}
.hero__title-line {
    display: block;
}
.hero__title-line--strike {
    font-size: clamp(1.4rem, 3.5vw, 2rem);
    font-weight: 700;
    color: var(--color-text-light);
    position: relative;
}
.hero__title-line--accent {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 900;
    color: var(--color-red);
    line-height: 1.2;
    letter-spacing: -0.02em;
}
.hero__subtitle {
    font-size: clamp(1rem, 2vw, 1.15rem);
    color: var(--color-text);
    line-height: 2;
    margin-bottom: 32px;
}
.hero__subtitle-highlight {
    font-weight: 900;
    font-size: 1.3em;
    color: var(--color-primary);
    background: linear-gradient(transparent 60%, rgba(66, 133, 244, 0.15) 60%);
}
.hero__cta-group {
    margin-bottom: 40px;
}
.hero__cta-note {
    margin-top: 12px;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}
.hero__cta-note i {
    color: var(--color-green);
    margin-right: 4px;
}
.hero__stats {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 24px 28px;
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}
.hero__stat {
    text-align: center;
    flex: 1;
}
.hero__stat-number {
    font-family: var(--font-en);
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--color-dark);
    line-height: 1;
}
.hero__stat-unit {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-light);
}
.hero__stat-label {
    display: block;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}
.hero__stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border);
}

/* Hero Visual / Mockup */
.hero__visual {
    display: flex;
    justify-content: center;
}
.hero__mockup {
    width: 100%;
    max-width: 480px;
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid var(--color-border);
}
.hero__mockup-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: #f5f5f5;
    border-bottom: 1px solid var(--color-border);
}
.hero__mockup-dots {
    display: flex;
    gap: 6px;
}
.hero__mockup-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}
.hero__mockup-url {
    font-family: var(--font-en);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    background: #fff;
    padding: 4px 12px;
    border-radius: 6px;
    flex: 1;
    text-align: center;
}
.hero__mockup-body {
    display: flex;
    min-height: 280px;
}
.hero__mockup-sidebar {
    width: 140px;
    padding: 12px 8px;
    border-right: 1px solid var(--color-border);
    background: #fafafa;
}
.hero__mockup-menu-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    font-size: 0.72rem;
    border-radius: 6px;
    color: var(--color-text-light);
    margin-bottom: 2px;
}
.hero__mockup-menu-item i { font-size: 0.8rem; }
.hero__mockup-menu-item.active {
    background: #e8f0fe;
    color: var(--color-primary);
    font-weight: 600;
}
.hero__mockup-content {
    flex: 1;
    padding: 16px;
}
.hero__mockup-ai-bubble {
    background: linear-gradient(135deg, #e8f0fe, #f0e6ff);
    border-radius: var(--radius-md);
    padding: 14px;
    margin-bottom: 14px;
    animation: fadeInUp 1s ease 0.5s both;
}
.hero__mockup-ai-icon {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 8px;
    background: #fff;
    padding: 3px 10px;
    border-radius: 50px;
}
.hero__mockup-ai-text {
    font-size: 0.78rem;
    color: var(--color-text);
    line-height: 1.6;
}
.hero__mockup-email-preview {
    padding: 12px;
    background: #fafafa;
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--color-green);
    animation: fadeInUp 1s ease 1s both;
}
.hero__mockup-email-preview p {
    font-size: 0.72rem;
    color: var(--color-text-light);
    line-height: 1.7;
}
.hero__mockup-email-preview p:first-child {
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 6px;
}

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

.hero__scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}
.hero__scroll-indicator span {
    font-family: var(--font-en);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-text-muted);
}
.hero__scroll-line {
    width: 1px;
    height: 30px;
    background: var(--color-text-muted);
    animation: scrollPulse 2s ease infinite;
}
@keyframes scrollPulse {
    0%,100% { opacity: 0.3; height: 20px; }
    50% { opacity: 1; height: 30px; }
}

@media (max-width: 900px) {
    .hero {
        padding: 120px 0 60px;
        min-height: auto;
    }
    .hero__inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .hero__visual { order: -1; }
    .hero__mockup { max-width: 360px; }
    .hero__mockup-sidebar { display: none; }
    .hero__stats {
        gap: 16px;
        padding: 18px 16px;
    }
    .hero__stat-number { font-size: 1.6rem; }
    .hero__scroll-indicator { display: none; }
}

/* ===================================
   PROBLEM SECTION
   =================================== */
.problem {
    padding: 100px 0;
    background: var(--color-bg-light);
}
.problem__cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}
.problem__card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.problem__card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
}
.problem__card:nth-child(1)::before { background: var(--color-red); }
.problem__card:nth-child(2)::before { background: var(--color-yellow); }
.problem__card:nth-child(3)::before { background: var(--color-primary); }
.problem__card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.problem__card-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 16px;
}
.problem__card-icon--red { background: #fce8e6; color: var(--color-red); }
.problem__card-icon--yellow { background: #fef7e0; color: var(--color-yellow-dark); }
.problem__card-icon--blue { background: #e8f0fe; color: var(--color-primary); }
.problem__card-number {
    font-family: var(--font-en);
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}
.problem__card-title {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--color-dark);
    line-height: 1.5;
    margin-bottom: 12px;
}
.problem__card-text {
    font-size: 0.92rem;
    color: var(--color-text-light);
    line-height: 1.9;
}

.problem__conclusion {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    background: linear-gradient(135deg, var(--color-dark), var(--color-dark-alt));
    border-radius: var(--radius-lg);
    padding: 36px 40px;
    color: #fff;
}
.problem__conclusion-icon {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    background: var(--color-red);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}
.problem__conclusion-text {
    font-size: 1.1rem;
    line-height: 1.9;
}

@media (max-width: 768px) {
    .problem { padding: 72px 0; }
    .problem__cards {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .problem__card { padding: 28px 20px; }
    .problem__conclusion {
        flex-direction: column;
        padding: 28px 20px;
        text-align: center;
        align-items: center;
    }
    .problem__conclusion-text { font-size: 1rem; }
}

/* ===================================
   SOLUTION SECTION
   =================================== */
.solution {
    padding: 100px 0;
    background: linear-gradient(160deg, var(--color-dark) 0%, var(--color-dark-alt) 100%);
    position: relative;
    overflow: hidden;
}
.solution__main-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 28px;
    margin-bottom: 48px;
}
.solution__block {
    border-radius: var(--radius-lg);
    overflow: hidden;
}
.solution__block--primary {
    background: #fff;
    padding: 40px;
    border: 1px solid rgba(255,255,255,0.1);
}
.solution__block--secondary {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 36px;
}
.solution__block-header { margin-bottom: 28px; }
.solution__block-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 700;
    background: #e8f0fe;
    color: var(--color-primary);
    margin-bottom: 16px;
}
.solution__block-badge--sub {
    background: rgba(142, 36, 170, 0.15);
    color: #ce93d8;
}
.solution__block-title {
    font-size: 1.6rem;
    font-weight: 900;
}
.solution__block--primary .solution__block-title { color: var(--color-dark); }
.solution__block--secondary .solution__block-title { color: #fff; }
.solution__block-subtitle {
    font-size: 0.95rem;
    font-weight: 600;
    margin-top: 4px;
}
.solution__block--primary .solution__block-subtitle { color: var(--color-text-muted); }
.solution__block--secondary .solution__block-subtitle { color: rgba(255,255,255,0.6); }

.solution__features { display: flex; flex-direction: column; gap: 24px; }
.solution__feature {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}
.solution__feature-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.2rem;
}
.solution__feature-content h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 4px;
}
.solution__feature-content p {
    font-size: 0.88rem;
    color: var(--color-text-light);
    line-height: 1.8;
}

.solution__sub-features { display: flex; flex-direction: column; gap: 24px; }
.solution__sub-feature {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    color: #fff;
}
.solution__sub-feature > i {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}
.solution__sub-feature h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 4px;
}
.solution__sub-feature p {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.7);
    line-height: 1.8;
}

/* Cost Comparison */
.solution__cost {
    margin-top: 16px;
}
.solution__cost-inner {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-lg);
    padding: 40px;
}
.solution__cost-header {
    text-align: center;
    margin-bottom: 32px;
}
.solution__cost-header h3 {
    font-size: 1.3rem;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}
.solution__cost-header h3 i { color: var(--color-yellow); }
.solution__cost-comparison {
    display: flex;
    align-items: center;
    gap: 24px;
}
.solution__cost-item {
    flex: 1;
    padding: 28px;
    border-radius: var(--radius-md);
    text-align: center;
}
.solution__cost-item--bad {
    background: rgba(234, 67, 53, 0.1);
    border: 1px solid rgba(234, 67, 53, 0.3);
}
.solution__cost-item--good {
    background: rgba(52, 168, 83, 0.1);
    border: 2px solid var(--color-green);
    position: relative;
}
.solution__cost-label {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.6);
    margin-bottom: 8px;
    font-weight: 600;
}
.solution__cost-amount {
    font-family: var(--font-en);
    font-size: 1.8rem;
    font-weight: 800;
    display: block;
}
.solution__cost-item--bad .solution__cost-amount { color: var(--color-red); }
.solution__cost-item--good .solution__cost-amount { color: var(--color-green); }
.solution__cost-per {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.5);
}
.solution__cost-desc {
    font-size: 0.82rem;
    color: rgba(255,255,255,0.7);
    margin-top: 8px;
    line-height: 1.6;
}
.solution__cost-vs {
    font-family: var(--font-en);
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--color-yellow);
    flex-shrink: 0;
}
.solution__cost-note {
    text-align: center;
    font-size: 0.8rem;
    color: rgba(255,255,255,0.5);
    margin-top: 20px;
}
.solution__cost-note i { margin-right: 4px; }

/* Cost Examples Tags */
.solution__cost-examples {
    display: flex;
    gap: 6px;
    justify-content: center;
    flex-wrap: wrap;
    margin: 10px 0;
}
.solution__cost-example-tag {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    color: rgba(255,255,255,0.7);
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.15);
    padding: 3px 10px;
    border-radius: 50px;
}
.solution__cost-warn {
    color: var(--color-yellow);
}
.solution__cost-reality {
    margin-top: 20px;
    padding: 16px 20px;
    background: rgba(234, 67, 53, 0.08);
    border: 1px solid rgba(234, 67, 53, 0.2);
    border-radius: var(--radius-md);
}
.solution__cost-reality p {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.85);
    line-height: 1.8;
}
.solution__cost-reality i {
    color: var(--color-yellow);
    margin-right: 4px;
}

/* Solution Sub Note (Claude mention) */
.solution__sub-note {
    margin-top: 20px;
    padding: 14px 16px;
    background: rgba(255,255,255,0.05);
    border: 1px dashed rgba(255,255,255,0.15);
    border-radius: var(--radius-sm);
}
.solution__sub-note p {
    font-size: 0.82rem;
    color: rgba(255,255,255,0.6);
    line-height: 1.7;
}
.solution__sub-note i {
    color: rgba(255,255,255,0.4);
    margin-right: 4px;
}

@media (max-width: 900px) {
    .solution { padding: 72px 0; }
    .solution__main-grid {
        grid-template-columns: 1fr;
    }
    .solution__block--primary,
    .solution__block--secondary { padding: 28px 20px; }
    .solution__cost-inner { padding: 24px 16px; }
    .solution__cost-comparison {
        flex-direction: column;
        gap: 16px;
    }
    .solution__cost-item { width: 100%; }
}

/* ===================================
   CURRICULUM SECTION
   =================================== */
.curriculum {
    padding: 100px 0;
    background: var(--color-bg);
}
.curriculum__reference {
    margin-bottom: 48px;
}
.curriculum__reference-inner {
    display: flex;
    gap: 28px;
    align-items: center;
    background: linear-gradient(135deg, #f0f4ff, #e8f0fe);
    border: 1px solid rgba(66, 133, 244, 0.2);
    border-radius: var(--radius-lg);
    padding: 28px 36px;
}
.curriculum__reference-book {
    flex-shrink: 0;
}
.curriculum__book-cover {
    width: 120px;
    height: auto;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}
.curriculum__book-cover:hover {
    transform: scale(1.05) rotate(-2deg);
    box-shadow: var(--shadow-lg);
}
.curriculum__reference-icon {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
}
.curriculum__reference-author {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--color-text);
    margin-top: 2px;
}
.curriculum__reference-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 2px;
}
.curriculum__reference-title {
    font-size: 1.2rem;
    font-weight: 900;
    color: var(--color-dark);
    line-height: 1.4;
}
.curriculum__reference-desc {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-top: 2px;
}

/* Timeline */
.curriculum__timeline {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 32px;
    margin-bottom: 48px;
}
.curriculum__timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 44px;
    width: 3px;
    height: 100%;
    background: linear-gradient(to bottom, var(--color-red), var(--color-primary), #8E24AA);
    border-radius: 3px;
}
.curriculum__day {
    display: flex;
    gap: 32px;
    position: relative;
}
.curriculum__day-marker {
    flex-shrink: 0;
    width: 90px;
    display: flex;
    justify-content: center;
    z-index: 1;
}
.curriculum__day-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 90px;
    height: 40px;
    background: var(--color-dark);
    color: #fff;
    font-family: var(--font-en);
    font-size: 0.85rem;
    font-weight: 800;
    border-radius: var(--radius-sm);
    letter-spacing: 0.05em;
}
.curriculum__day:nth-child(1) .curriculum__day-number { background: var(--color-red); }
.curriculum__day:nth-child(2) .curriculum__day-number { background: var(--color-primary); }
.curriculum__day:nth-child(3) .curriculum__day-number { background: #8E24AA; }

.curriculum__day-content {
    flex: 1;
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}
.curriculum__day-content:hover {
    box-shadow: var(--shadow-md);
}
.curriculum__day-header {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 20px;
}
.curriculum__day-icon {
    font-size: 2rem;
    flex-shrink: 0;
    margin-top: 2px;
}
.curriculum__day-header h3 {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--color-dark);
    line-height: 1.5;
}
.curriculum__day-list {
    list-style: none;
    margin-bottom: 16px;
}
.curriculum__day-list li {
    position: relative;
    padding-left: 24px;
    font-size: 0.92rem;
    color: var(--color-text-light);
    line-height: 2.2;
}
.curriculum__day-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-green);
    font-weight: 700;
}
.curriculum__day-result {
    padding: 12px 16px;
    background: var(--color-bg-light);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
}

/* Curriculum Note */
.curriculum__note {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    background: #fff8e1;
    border: 1px solid rgba(251, 188, 5, 0.3);
    border-radius: var(--radius-md);
    padding: 20px 24px;
}
.curriculum__note-icon {
    flex-shrink: 0;
    color: var(--color-yellow-dark);
    font-size: 1.2rem;
    margin-top: 2px;
}
.curriculum__note p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.8;
}

@media (max-width: 768px) {
    .curriculum { padding: 72px 0; }
    .curriculum__reference-inner {
        flex-direction: column;
        text-align: center;
        padding: 20px;
    }
    .curriculum__book-cover {
        width: 100px;
    }
    .curriculum__timeline::before { left: 20px; }
    .curriculum__day { flex-direction: column; gap: 12px; }
    .curriculum__day-marker {
        width: auto;
        justify-content: flex-start;
        padding-left: 0;
    }
    .curriculum__day-number { width: 80px; height: 36px; font-size: 0.8rem; }
    .curriculum__day-content { padding: 24px 18px; }
    .curriculum__day-header { flex-direction: column; gap: 8px; }
    .curriculum__note {
        flex-direction: column;
        padding: 16px;
    }
}

/* ===================================
   PRICING SECTION
   =================================== */
.pricing {
    padding: 100px 0;
    background: linear-gradient(160deg, var(--color-dark-alt) 0%, #0f3460 100%);
}
.pricing__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
    margin-bottom: 40px;
}
.pricing__card {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}
.pricing__card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}
.pricing__card--featured {
    background: rgba(255,255,255,0.1);
    border-color: var(--color-primary);
    position: relative;
}
.pricing__card-ribbon {
    position: absolute;
    top: 20px;
    right: -30px;
    background: var(--color-red);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 40px;
    transform: rotate(45deg);
}
.pricing__card-header {
    padding: 36px 32px 24px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.pricing__card-label {
    font-size: 0.82rem;
    color: rgba(255,255,255,0.6);
    font-weight: 500;
}
.pricing__card-name {
    font-size: 1.5rem;
    font-weight: 900;
    color: #fff;
    margin: 8px 0 16px;
}
.pricing__card-amount {
    font-family: var(--font-en);
    font-size: 3.5rem;
    font-weight: 800;
    color: #fff;
    line-height: 1;
}
.pricing__card--featured .pricing__card-amount { color: var(--color-yellow); }
.pricing__card-unit {
    font-size: 1.2rem;
    font-weight: 700;
    color: rgba(255,255,255,0.8);
}
.pricing__card-tax {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.5);
    display: block;
    margin-top: 4px;
}
.pricing__card-body {
    padding: 28px 32px 36px;
}
.pricing__card-features {
    list-style: none;
    margin-bottom: 20px;
}
.pricing__card-features li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.92rem;
    color: rgba(255,255,255,0.85);
    line-height: 2.2;
}
.pricing__card-features li i {
    color: var(--color-green);
    margin-top: 6px;
    flex-shrink: 0;
}
.pricing__card-note {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.5);
    line-height: 1.7;
    padding-top: 16px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* Upsell */
.pricing__upsell-inner {
    display: flex;
    align-items: center;
    gap: 20px;
    background: rgba(255,255,255,0.06);
    border: 1px dashed rgba(255,255,255,0.2);
    border-radius: var(--radius-lg);
    padding: 28px 32px;
}
.pricing__upsell-icon {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    background: rgba(66, 133, 244, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: var(--color-primary);
}
.pricing__upsell-content { flex: 1; }
.pricing__upsell-content h4 {
    font-size: 1rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 4px;
}
.pricing__upsell-content p {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.6);
    line-height: 1.7;
}

@media (max-width: 768px) {
    .pricing { padding: 72px 0; }
    .pricing__grid { grid-template-columns: 1fr; }
    .pricing__card-header, .pricing__card-body { padding: 24px 20px; }
    .pricing__upsell-inner {
        flex-direction: column;
        text-align: center;
        padding: 24px 20px;
    }
}

/* ===================================
   INSTRUCTOR SECTION
   =================================== */
.instructor {
    padding: 100px 0;
    background: var(--color-bg-light);
}
.instructor__card {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 48px;
    background: #fff;
    border-radius: var(--radius-xl);
    padding: 48px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}
.instructor__image {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}
.instructor__image-placeholder {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: linear-gradient(135deg, #e8f0fe, #f0e6ff);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--color-primary);
}
.instructor__nickname {
    background: var(--color-dark);
    color: #fff;
    padding: 6px 18px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
}
.instructor__name {
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--color-dark);
    margin-bottom: 4px;
}
.instructor__name-en {
    font-family: var(--font-en);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-muted);
    margin-left: 12px;
}
.instructor__tagline {
    font-size: 0.95rem;
    color: var(--color-text-light);
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--color-border);
}
.instructor__points { display: flex; flex-direction: column; gap: 24px; }
.instructor__point {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}
.instructor__point-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    background: var(--color-bg-light);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: 1.1rem;
}
.instructor__point h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 4px;
}
.instructor__point p {
    font-size: 0.88rem;
    color: var(--color-text-light);
    line-height: 1.8;
}

@media (max-width: 768px) {
    .instructor { padding: 72px 0; }
    .instructor__card {
        grid-template-columns: 1fr;
        padding: 32px 20px;
        gap: 32px;
    }
    .instructor__image-placeholder { width: 150px; height: 150px; font-size: 3rem; }
}

/* ===================================
   CTA SECTION
   =================================== */
.cta {
    padding: 100px 0;
    background: linear-gradient(160deg, #1a73e8 0%, #4285F4 50%, #5e97f6 100%);
    position: relative;
    overflow: hidden;
}
.cta__bg-shapes {
    position: absolute;
    inset: 0;
    pointer-events: none;
}
.cta__shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(255,255,255,0.06);
}
.cta__shape--1 { width: 400px; height: 400px; top: -150px; right: -100px; }
.cta__shape--2 { width: 300px; height: 300px; bottom: -100px; left: -50px; }

.cta__inner {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}
.cta__badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.2);
    border: 1px solid rgba(255,255,255,0.3);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
}
.cta__title {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 900;
    color: #fff;
    margin-bottom: 16px;
}
.cta__subtitle {
    font-size: 1.05rem;
    color: rgba(255,255,255,0.9);
    line-height: 2;
    margin-bottom: 32px;
}
.cta__benefits {
    display: flex;
    justify-content: center;
    gap: 28px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}
.cta__benefit {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #fff;
    font-size: 0.9rem;
    font-weight: 600;
}
.cta__benefit i {
    color: var(--color-yellow);
    font-size: 1.1rem;
}

/* CTA Form */
.cta__form-area {
    background: #fff;
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow: var(--shadow-xl);
    text-align: left;
}
.cta__form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}
.cta__form-group { margin-bottom: 0; }
.cta__form-group--full {
    margin-bottom: 16px;
}
.cta__form-group label {
    display: block;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 6px;
}
.required {
    font-size: 0.7rem;
    color: var(--color-red);
    background: #fce8e6;
    padding: 2px 6px;
    border-radius: 4px;
    margin-left: 4px;
}
.cta__form-group input,
.cta__form-group select,
.cta__form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-ja);
    font-size: 0.95rem;
    transition: var(--transition);
    background: var(--color-bg-light);
}
.cta__form-group input:focus,
.cta__form-group select:focus,
.cta__form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(66, 133, 244, 0.1);
}
.cta__form-group textarea { resize: vertical; }
.cta__form .btn {
    margin-top: 12px;
}
.cta__form-privacy {
    text-align: center;
    font-size: 0.78rem;
    color: var(--color-text-muted);
    margin-top: 12px;
}
.cta__form-privacy i { margin-right: 4px; }

.cta__urgency {
    margin-top: 28px;
    padding: 16px 24px;
    background: rgba(255,255,255,0.15);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255,255,255,0.2);
}
.cta__urgency p {
    font-size: 0.9rem;
    color: #fff;
}
.cta__urgency i {
    color: var(--color-yellow);
    margin-right: 6px;
}

@media (max-width: 768px) {
    .cta { padding: 72px 0; }
    .cta__form-area { padding: 24px 18px; }
    .cta__form-row { grid-template-columns: 1fr; }
    .cta__benefits {
        flex-direction: column;
        gap: 12px;
        align-items: center;
    }
}

/* ===================================
   FAQ SECTION
   =================================== */
.faq {
    padding: 80px 0;
    background: var(--color-bg);
}
.faq .section-title { text-align: center; margin-bottom: 40px; }
.faq__list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.faq__item {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: #fff;
    transition: var(--transition);
}
.faq__item.is-open {
    box-shadow: var(--shadow-sm);
    border-color: var(--color-primary);
}
.faq__question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    background: none;
    border: none;
    font-family: var(--font-ja);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-dark);
    cursor: pointer;
    text-align: left;
    gap: 16px;
}
.faq__question i {
    flex-shrink: 0;
    color: var(--color-text-muted);
    transition: var(--transition);
}
.faq__item.is-open .faq__question i {
    transform: rotate(180deg);
    color: var(--color-primary);
}
.faq__answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}
.faq__answer p {
    padding: 0 24px 20px;
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.9;
}

@media (max-width: 768px) {
    .faq { padding: 60px 0; }
    .faq__question { padding: 16px 18px; font-size: 0.9rem; }
    .faq__answer p { padding: 0 18px 16px; }
}

/* ===================================
   FOOTER
   =================================== */
.footer {
    background: var(--color-dark);
    color: rgba(255,255,255,0.7);
    padding: 48px 0 24px;
}
.footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 28px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 24px;
}
.footer__logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    color: #fff;
}
.footer__logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-green));
    color: #fff;
    border-radius: 8px;
    font-size: 0.9rem;
}
.footer__tagline {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.5);
    margin-top: 6px;
}
.footer__links {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}
.footer__links a {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.6);
    transition: var(--transition);
}
.footer__links a:hover { color: #fff; }
.footer__bottom {
    text-align: center;
}
.footer__bottom p {
    font-size: 0.78rem;
    color: rgba(255,255,255,0.4);
}

@media (max-width: 768px) {
    .footer__inner {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    .footer__links { justify-content: center; gap: 16px; }
}

/* ===================================
   FLOATING CTA (Mobile)
   =================================== */
.floating-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 12px 16px;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 -4px 20px rgba(0,0,0,0.1);
    z-index: 999;
    display: none;
    transform: translateY(100%);
    transition: transform 0.4s ease;
}
.floating-cta.is-visible {
    transform: translateY(0);
}

@media (max-width: 768px) {
    .floating-cta { display: block; }
    body { padding-bottom: 80px; }
}

/* ===================================
   Form Success State
   =================================== */
.form-success {
    text-align: center;
    padding: 40px 20px;
}
.form-success__icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-green), #1e8e3e);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
    color: #fff;
}
.form-success h3 {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--color-dark);
    margin-bottom: 12px;
}
.form-success p {
    font-size: 0.95rem;
    color: var(--color-text-light);
    line-height: 1.8;
}