:root {
    --primary-color: #1a1a2e;
    --accent-color: #4f46e5;
    --accent-light: #818cf8;
    --bg-color: #0f0f1a;
    --bg-secondary: #16162a;
    --bg-card: rgba(255, 255, 255, 0.03);
    --text-color: #e2e8f0;
    --text-light: #94a3b8;
    --border-color: rgba(255, 255, 255, 0.08);
    --glow: 0 0 40px rgba(79, 70, 229, 0.3);
    --font-main: 'Noto Sans JP', 'Inter', sans-serif;
    --container-width: 1100px;
    --header-height: 70px;
}

/* Theme Toggle Button */
.theme-toggle {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    width: 44px;
    height: 44px;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
}

.theme-toggle:hover {
    border-color: var(--accent-color);
    box-shadow: var(--glow);
}

.theme-toggle img {
    width: 24px;
    height: 24px;
    object-fit: contain;
}

/* Dark mode: show sun, hide moon */
.icon-sun {
    display: block;
}

.icon-moon {
    display: none;
}

/* Particles Canvas */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    max-width: 100vw;
}

/* Cursor Glow */
.cursor-glow {
    position: fixed;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(79, 70, 229, 0.15), transparent 70%);
    pointer-events: none;
    z-index: 0;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s;
}

/* Typing Animation */
.cursor-blink {
    animation: blink 1s infinite;
    color: var(--accent-light);
}

@keyframes blink {

    0%,
    50% {
        opacity: 1;
    }

    51%,
    100% {
        opacity: 0;
    }
}

/* Scroll Reveal Animations */
.section-header,
.contact-card,
.filter-controls,
.work-card {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.section-header.visible,
.contact-card.visible,
.filter-controls.visible,
.work-card.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Header Scroll State */
.site-header.scrolled {
    background: rgba(15, 15, 26, 0.95);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-main);
    color: var(--text-color);
    background: var(--bg-color);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    max-width: 100%;
    width: 100%;
}

/* Prevent any child from causing overflow */
*,
*::before,
*::after {
    max-width: 100%;
}

/* Background pattern */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(ellipse at 20% 20%, rgba(79, 70, 229, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(129, 140, 248, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}




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

ul {
    list-style: none;
}

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

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

.btn {
    display: inline-block;
    padding: 14px 36px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

/* Button Styles */
/* Button Styles */
.btn-glow {
    background: rgba(15, 15, 26, 0.6);
    color: #fff;
    border: 1px solid rgba(79, 70, 229, 0.5);
    box-shadow: 0 0 15px rgba(79, 70, 229, 0.2);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.btn-glow:hover {
    background: rgba(79, 70, 229, 0.2);
    border-color: var(--accent-light);
    box-shadow: 0 0 25px rgba(79, 70, 229, 0.6);
    transform: translateY(-2px);
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.8);
}

.btn-gradient {
    background: linear-gradient(135deg, #FF6B6B, #FF8E53);
    color: #fff;
    font-weight: 700;
    /* Bolder text */
    border: none;
    box-shadow: 0 6px 20px rgba(255, 107, 107, 0.5);
    /* Stronger initial shadow */
    position: relative;
    overflow: hidden;
    z-index: 1;
    transform: scale(1.05);
    /* Slightly bigger by default */
}

.btn-gradient::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.5s;
    z-index: -1;
}

.btn-gradient:hover {
    transform: scale(1.08) translateY(-2px);
    /* Scale up more on hover */
    box-shadow: 0 10px 40px rgba(255, 107, 107, 0.7);
}

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

.btn-icon {
    display: inline-block;
    margin-left: 8px;
    transition: transform 0.3s;
}

.btn:hover .btn-icon {
    transform: translateX(4px);
}

/* Secondary Button (Legacy support if needed, otherwise this is replaced) */
.btn-secondary {
    background: rgba(255, 255, 255, 0.03);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    margin-left: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-secondary:hover {
    border-color: var(--accent-light);
    color: var(--accent-light);
    background: rgba(79, 70, 229, 0.1);
    box-shadow: 0 0 20px rgba(79, 70, 229, 0.3);
    transform: translateY(-2px);
}

/* Header */
.site-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(15, 15, 26, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
}

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

.logo {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #fff, var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}


.navbar ul {
    display: flex;
    gap: 36px;
    padding: 0;
    margin: 0;
}

.navbar a {
    font-weight: 500;
    color: var(--text-light);
    font-size: 0.9rem;
    position: relative;
    text-decoration: none;
}

.navbar a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width 0.3s;
}

.navbar a:hover {
    color: #fff;
}

.navbar a:hover::after {
    width: 100%;
}

/* Hero Section */
.nav-sub {
    display: none;
}

.hero-section {
    padding-top: calc(var(--header-height) + 100px);
    padding-bottom: 120px;
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: min(600px, 100vw);
    height: min(600px, 100vw);
    background: radial-gradient(circle, rgba(79, 70, 229, 0.2), transparent 70%);
    pointer-events: none;
}

.subtitle {
    font-size: 0.85rem;
    color: var(--accent-light);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: 16px;
    display: inline-block;
    padding: 6px 14px;
    background: rgba(79, 70, 229, 0.15);
    border-radius: 20px;
    border: 1px solid rgba(79, 70, 229, 0.3);
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.15;
    margin-bottom: 28px;
    font-weight: 700;
    background: linear-gradient(135deg, #fff 0%, var(--text-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    letter-spacing: 0.1em;
    margin-bottom: 24px;
    position: relative;
    z-index: 2;
}

.hero-message {
    font-size: 1.1rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    margin-bottom: 40px;
    position: relative;
    z-index: 2;
    text-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
    opacity: 0;
    animation: fadeInUp 1s ease 0.5s forwards;
    /* 少し遅れてふわっと出る */
}

/* スマホ対応 */
@media (max-width: 767px) {
    .container {
        padding: 0 20px;
    }

    .hero-section {
        /* Center content on mobile */
        text-align: center;
        padding-top: calc(var(--header-height) + 60px);
    }

    .hero-title {
        font-size: 2.2rem;
        /* Slightly smaller for mobile fitting */
    }

    .highlight-text {
        display: block;
        /* Ensure it takes full width to center properly */
        margin-top: 12px;
        margin-bottom: 24px;
        text-align: center;
    }

    .hero-message {
        font-size: 0.95rem;
        /* スマホでは少し小さく */
        text-align: center;
        /* Ensure message is also centered */
    }

    .hero-message br {
        display: none;
        /* スマホでは自然に折り返す */
    }
}

.intro-text {
    font-size: 1.15rem;
    color: var(--text-light);
    margin-bottom: 32px;
    max-width: 550px;
    line-height: 1.8;
}

.skills-list {
    margin-bottom: 48px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

.skill-tag {
    background: var(--bg-card);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-color);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    transition: all 0.3s;
}

.skill-tag:hover {
    border-color: var(--accent-color);
    box-shadow: var(--glow);
}

/* CTA Buttons (Hero) */
.cta-buttons {
    margin-top: 48px;
    margin-bottom: 24px;
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

/* Enhancements for PC */
@media (min-width: 769px) {
    .cta-buttons .btn {
        padding: 16px 48px;
        font-size: 1.2rem;
        border-radius: 50px;
        /* Rounder for modern feel? Or keep 16px */
        border-radius: 16px;
        letter-spacing: 0.05em;
        min-width: 200px;
        text-align: center;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    }

    .cta-buttons .btn:hover {
        transform: translateY(-4px);
        box-shadow: 0 15px 40px rgba(79, 70, 229, 0.4);
    }
}

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

.pricing-concept {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px;
    padding: 30px;
    background: rgba(79, 70, 229, 0.05);
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.pricing-concept h3 {
    color: var(--accent-light);
    margin-bottom: 16px;
    font-size: 1.4rem;
}

.pricing-concept p {
    color: var(--text-light);
    line-height: 2;
    margin-bottom: 24px;
    /* 段落ごとの余白を追加 */
}

.pricing-concept p:last-child {
    margin-bottom: 0;
}

/* PCのみ改行 */
.pc-only {
    display: block;
}

@media (max-width: 767px) {
    .pc-only {
        display: none;
    }
}

.pricing-concept strong {
    color: #fff;
    border-bottom: 2px solid var(--accent-color);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
    align-items: center;
    /* センター揃え */
}

/* Common and Standard/Premium Cards */
.pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    position: relative;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    /* バネのような心地よい動き */
    /* Scroll Animation Init */
    opacity: 0;
    transform: translateY(30px);
}

.pricing-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.pricing-card:hover {
    transform: translateY(-15px);
    /* これが「浮く」やつ */
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    border-color: var(--accent-light);
}

.pricing-card h3 {
    font-size: 1.4rem;
    margin-bottom: 16px;
    color: var(--text-color);
}

.pricing-card .price {
    font-size: 2rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
}

.pricing-card .price .tax {
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--text-light);
}

.pricing-card .desc {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 30px;
    min-height: 3em;
}

.plan-features {
    list-style: none;
    padding: 0;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
    text-align: left;
}

.plan-features li {
    margin-bottom: 12px;
    color: var(--text-color);
    font-size: 0.95rem;
    padding-left: 20px;
    position: relative;
}

.plan-features li::before {
    content: '•';
    color: var(--accent-color);
    position: absolute;
    left: 0;
}

/* KILLER PLAN (AI Speed Plan) */
.pricing-card.killer {
    background: linear-gradient(145deg, rgba(79, 70, 229, 0.15), rgba(0, 0, 0, 0.4));
    border: 2px solid var(--accent-color);
    padding: 32px 20px;
    /* パディングを削減して高さを抑制 */
    /* transform: scale(1.05); ← 削除：図々しさを消去 */
    box-shadow: 0 0 40px rgba(79, 70, 229, 0.1);
    z-index: 2;
}

.pricing-card.killer:hover {
    transform: translateY(-15px);
    /* AIプランもホバー時は浮く */
    box-shadow: 0 20px 50px rgba(79, 70, 229, 0.3);
}

.killer-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #ff0080, #7928ca);
    color: #fff;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 700;
    box-shadow: 0 4px 15px rgba(255, 0, 128, 0.4);
    white-space: nowrap;
}

.pricing-card.killer h3 {
    color: var(--accent-light);
    font-size: 1.6rem;
}

.pricing-card.killer .price {
    font-size: 2.8rem;
    background: linear-gradient(90deg, #fff, var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
}

.btn-killer {
    display: block;
    width: 100%;
    box-shadow: 0 4px 15px rgba(124, 58, 237, 0.4);
}

.pricing-card.killer .btn-killer:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(124, 58, 237, 0.6);
}

/* Options Box */
.options-box {
    margin-top: 80px;
    text-align: center;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 60px 40px;
    position: relative;
    /* わずかな光彩 */
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.2);
}

.options-box h3 {
    margin-bottom: 40px;
    color: var(--text-color);
    font-size: 1.8rem;
    display: inline-block;
    position: relative;
}

.options-box h3::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--accent-color);
    margin: 10px auto 0;
    border-radius: 2px;
}

.options-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

/* PREMIUM PLAN AURA */
.pricing-card.premium {
    border-color: rgba(212, 175, 55, 0.4);
    /* 上品なゴールドの枠 */
    background: linear-gradient(145deg, rgba(212, 175, 55, 0.05), rgba(0, 0, 0, 0.4));
}

.pricing-card.premium .plan-label {
    background: linear-gradient(135deg, #d4af37, #fcd34d);
    /* ゴールドラベル */
    color: #000;
    font-weight: 700;
    box-shadow: 0 0 10px rgba(212, 175, 55, 0.4);
}

.pricing-card.premium:hover {
    border-color: rgba(212, 175, 55, 0.8);
    box-shadow: 0 20px 50px rgba(212, 175, 55, 0.15);
    /* 金色の光 */
}

.option-item {
    background: var(--bg-card);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.opt-badge {
    position: absolute;
    top: -10px;
    /* 枠線の上に少し出す */
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #ff0080, #7928ca);
    color: #fff;
    font-size: 0.75rem;
    padding: 2px 12px;
    border-radius: 12px;
    font-weight: bold;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    white-space: nowrap;
}

.option-item.recommended {
    border-color: var(--accent-light);
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), transparent);
    box-shadow: 0 0 15px rgba(79, 70, 229, 0.2);
    margin-top: 10px;
    /* バッジ分のスペース確保 */
    overflow: visible;
    /* バッジを外に出すため */
}

.option-item:hover {
    transform: translateY(-3px);
    border-color: var(--accent-light);
}

.opt-name {
    font-size: 0.95rem;
    color: var(--text-color);
    margin-bottom: 8px;
    text-align: center;
}

.opt-price {
    font-weight: bold;
    color: var(--accent-light);
    font-size: 1.1rem;
}

/* Works Section */
.works-section {
    padding: 180px 0 120px 0;
    background: var(--bg-color);
    position: relative;
    z-index: 10;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    margin-bottom: 60px;
}

.service-card {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.05), rgba(79, 70, 229, 0.02));
    padding: 32px;
    border-radius: 20px;
    position: relative;
    text-align: center;
    transition: all 0.3s ease;
    /* Scroll Animation Init */
    opacity: 0;
    transform: translateY(30px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    overflow: hidden;
}

/* Gradient Border Effect via Pseudo-element */
.service-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 20px;
    padding: 1px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent 50%, rgba(79, 70, 229, 0.3));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}

.service-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(79, 70, 229, 0.05));
    border-color: rgba(79, 70, 229, 0.3);
}

.service-card:hover::before {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.5), transparent 50%, rgba(255, 255, 255, 0.3));
}

.service-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 0 15px rgba(79, 70, 229, 0.4));
    transition: transform 0.3s;
}

.service-card:hover .service-icon img {
    transform: scale(1.1);
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: #fff;
    font-weight: 700;
}

.service-card p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.6;
}

.policy-box {
    background: radial-gradient(circle at top right, rgba(79, 70, 229, 0.1), transparent 60%),
        rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 24px;
    padding: 48px;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
    /* Scroll Animation Init */
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.policy-box.visible {
    opacity: 1;
    transform: translateY(0);
}

.policy-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-light), transparent);
}

.policy-box h3 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 32px;
    background: linear-gradient(135deg, #fff, var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.policy-list {
    list-style: none;
    display: grid;
    gap: 16px;
}

.policy-list li {
    font-size: 1rem;
    color: var(--text-color);
    display: flex;
    align-items: center;
}

.policy-list li::before {
    content: '✔';
    color: var(--accent-color);
    margin-right: 12px;
    font-weight: bold;
}

.policy-list strong {
    color: #fff;
    margin-right: 8px;
}

/* Works Section */
.works-section {
    padding: 180px 0 120px 0;
    /* 余白を拡大 */
    position: relative;
    z-index: 10;
}

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

.section-header h2 {
    font-size: 3rem;
    margin-bottom: 24px;
    background: linear-gradient(135deg, #fff 0%, var(--accent-light) 50%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
    position: relative;
    padding-bottom: 10px;
    letter-spacing: -0.02em;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--accent-color);
    border-radius: 2px;
    box-shadow: 0 0 15px var(--accent-color);
}

.section-header p {
    color: var(--text-light);
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    max-width: 600px;
    margin: 0 auto;
}

.filter-controls {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 60px;
}

.filter-btn {
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    font-size: 0.9rem;
    color: var(--text-light);
    cursor: pointer;
    padding: 10px 20px;
    border-radius: 10px;
    transition: all 0.3s;
    backdrop-filter: blur(10px);
}

.filter-btn:hover {
    border-color: var(--accent-color);
    color: var(--text-color);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
    color: #fff;
    border-color: transparent;
    box-shadow: var(--glow);
}

.works-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 32px;
}

.work-card {
    background: var(--bg-card);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(20px);
    transition: all 0.4s ease;
}

.work-card:hover {
    transform: translateY(-8px);
    border-color: rgba(79, 70, 229, 0.4);
    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.4),
        var(--glow);
}

.work-image {
    width: 100%;
    height: 220px;
    background: var(--bg-secondary);
    overflow: hidden;
    position: relative;
}

.work-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, transparent 60%, var(--bg-card));
    pointer-events: none;
}

.work-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.work-card:hover .work-image img {
    transform: scale(1.08);
}

.work-content {
    padding: 28px;
}

.work-category {
    font-size: 0.7rem;
    color: var(--accent-light);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 10px;
}

.work-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: #fff;
}

.work-description {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 24px;
    line-height: 1.6;
}

.work-description small {
    color: var(--text-light);
    opacity: 0.7;
}

.fictional-note {
    font-size: 0.75rem;
    color: var(--accent-light);
    opacity: 0.7;
    display: inline-block;
    margin-top: 4px;
}

.work-link {
    display: inline-flex;
    align-items: center;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent-light);
    transition: all 0.3s;
}

.work-link::after {
    content: '→';
    margin-left: 8px;
    transition: margin 0.3s;
}

.work-link:hover {
    color: #fff;
}

.work-link:hover::after {
    margin-left: 14px;
}

/* Contact Section */
.contact-section {
    padding: 120px 0;
    text-align: center;
    position: relative;
}

.contact-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.contact-card {
    background: var(--bg-card);
    padding: 60px;
    border-radius: 24px;
    max-width: 600px;
    margin: 0 auto;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(20px);
    position: relative;
    overflow: hidden;
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-color), var(--accent-light));
}

.contact-method-box {
    margin-bottom: 32px;
}

.method-label {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 12px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.email-link-pro {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    padding: 16px 32px;
    border-radius: 50px;
    /* カプセル型でモダンに */
    color: #fff;
    font-size: 1.4rem;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.email-link-pro:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-light);
    box-shadow: 0 0 30px rgba(79, 70, 229, 0.3);
    transform: translateY(-2px);
}

.mail-icon {
    font-size: 1.4rem;
    color: var(--accent-light);
}

/* スマホ対応 */
@media (max-width: 767px) {
    .email-link-pro {
        font-size: 1rem;
        /* スマホでは少し小さくして改行を防ぐ */
        padding: 14px 20px;
        width: 100%;
        box-sizing: border-box;
    }
}

.social-links {
    margin-bottom: 32px;
}

.social-link {
    display: inline-block;
    color: var(--text-light);
    font-weight: 500;
    padding: 10px 24px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    transition: all 0.3s;
}

.social-link:hover {
    color: var(--accent-light);
    border-color: var(--accent-color);
    box-shadow: var(--glow);
}

.availability {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* Footer */
.site-footer {
    padding: 40px 0;
    text-align: center;
    color: var(--text-light);
    font-size: 0.85rem;
    border-top: 1px solid var(--border-color);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content>* {
    animation: fadeInUp 0.8s ease forwards;
}

.hero-content>*:nth-child(1) {
    animation-delay: 0.1s;
}

.hero-content>*:nth-child(2) {
    animation-delay: 0.2s;
}

.hero-content>*:nth-child(3) {
    animation-delay: 0.3s;
}

.hero-content>*:nth-child(4) {
    animation-delay: 0.4s;
}

.hero-content>*:nth-child(5) {
    animation-delay: 0.5s;
}

/* ================================
   RESPONSIVE DESIGN
   - PC: 1025px以上
   - Tablet: 768px〜1024px
   - Mobile: 767px以下
   ================================ */

/* Tablet（768px〜1024px） */
@media (min-width: 768px) and (max-width: 1024px) {
    .container {
        padding: 0 32px;
    }

    .hero-title {
        font-size: 2.8rem;
    }

    .works-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .work-card {
        border-radius: 16px;
    }

    .work-image {
        height: 180px;
    }

    .section-header h2 {
        font-size: 2.2rem;
    }

    .filter-controls {
        flex-wrap: wrap;
    }
}

/* Mobile（767px以下） */
@media (max-width: 767px) {
    .site-nav {
        display: none;
    }

    .theme-toggle {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .hero-section {
        padding-top: calc(var(--header-height) + 40px);
        min-height: auto;
        padding-bottom: 60px;
    }

    .hero-title {
        font-size: 1.8rem;
        line-height: 1.3;
    }

    .subtitle {
        font-size: 0.75rem;
        padding: 5px 12px;
    }

    .intro-text {
        font-size: 1rem;
    }

    /* Mobile Text Adjustment */
    .pricing-concept p br,
    .pricing-card .desc br,
    .work-description br {
        display: none;
        /* スマホでは強制改行を無効化 */
    }

    /* イントロテキストは改行を生かす */
    .intro-text br {
        display: block;
        margin-bottom: 4px;
    }

    .pricing-concept,
    .policy-box {
        padding: 24px 20px;
        /* パディングを縮小 */
    }

    .pricing-concept h3 {
        font-size: 1.4rem;
        margin-bottom: 16px;
    }

    .pricing-concept p {
        text-align: left;
        /* スマホでは左揃えで読みやすく */
        font-size: 0.95rem;
        line-height: 1.8;
        /* 行間を少し広げて窮屈さを解消 */
    }

    .pricing-card {
        padding: 30px 20px;
    }

    .pricing-card.killer {
        padding: 32px 20px;
        box-shadow: 0 0 30px rgba(79, 70, 229, 0.4);
        /* スマホでも光らせる */
        border-color: var(--accent-light);
    }

    .policy-list li {
        display: block;
        /* フレックス解除して縦積みに */
        margin-bottom: 16px;
        position: relative;
        padding-left: 24px;
        /* アイコン分のインデント */
    }

    .policy-list li::before {
        position: absolute;
        left: 0;
        top: 0;
        margin-right: 0;
    }

    .policy-list strong {
        display: block;
        /* タイトルをブロック要素にして改行させる */
        margin-bottom: 4px;
        margin-right: 0;
    }

    .skills-list {
        margin-bottom: 32px;
    }

    .skill-tag {
        font-size: 0.8rem;
        padding: 6px 12px;
    }

    .btn {
        width: 100%;
        margin: 0 0 12px 0;
        text-align: center;
        padding: 14px 24px;
    }

    .btn-secondary {
        margin-left: 0;
    }

    /* Works & Contact Padding */
    .pricing-section,
    .service-section,
    .works-section,
    .contact-section {
        padding: 60px 0;
    }

    .works-section {
        padding-top: 100px;
        /* 少し広めに */
    }

    .works-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .work-image {
        height: 180px;
    }

    .work-content {
        padding: 20px;
    }

    .work-title {
        font-size: 1.1rem;
    }

    .work-description {
        font-size: 0.85rem;
    }

    .filter-controls {
        flex-wrap: wrap;
        gap: 8px;
        margin-bottom: 40px;
    }

    .filter-btn {
        padding: 8px 16px;
        font-size: 0.85rem;
    }

    .contact-card {
        padding: 32px 20px;
        border-radius: 16px;
    }

    .email-address {
        font-size: 1.1rem;
        word-break: break-all;
    }

    .social-link {
        padding: 8px 16px;
        font-size: 0.9rem;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .section-header h2 {
        font-size: 1.8rem;
    }

    .section-header p {
        font-size: 0.9rem;
    }

    .cursor-glow {
        display: none;
    }

    #particles {
        opacity: 0.5;
    }

    .site-footer {
        padding: 24px 0;
        font-size: 0.8rem;
    }
}

/* 小さいスマホ（375px以下） */
@media (max-width: 375px) {
    .hero-title {
        font-size: 1.5rem;
    }

    .container {
        padding: 0 16px;
    }

    .email-address {
        font-size: 1rem;
    }
}

/* --- Estimate Cart Styles --- */

/* Selection Buttons */
.btn-select,
.btn-option-toggle {
    display: block;
    width: 100%;
    padding: 12px;
    margin-top: 20px;
    border: 1px solid var(--accent-color);
    background: transparent;
    color: var(--accent-color);
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
}

.btn-select:hover,
.btn-option-toggle:hover {
    background: rgba(79, 70, 229, 0.1);
}

.btn-select.selected,
.btn-option-toggle.selected {
    background: var(--accent-color);
    color: #fff;
    box-shadow: 0 0 15px rgba(79, 70, 229, 0.4);
}

/* Killer Plan Button Special Style */
.killer-select {
    background: linear-gradient(135deg, #ff0080, #7928ca);
    border: none;
    color: white;
    box-shadow: 0 4px 15px rgba(255, 0, 128, 0.4);
}

.killer-select:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 0, 128, 0.6);
}

.killer-select.selected {
    background: #fff;
    color: #ff0080;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
}

/* Sticky Cart Bar */
.cart-bar {
    position: fixed;
    bottom: -100px;
    /* 初期状態は隠す */
    left: 0;
    width: 100%;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--accent-light);
    padding: 15px 0;
    z-index: 1000;
    transition: bottom 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
    box-shadow: 0 -5px 30px rgba(0, 0, 0, 0.5);
}

.cart-bar.active {
    bottom: 0;
}

.cart-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cart-info {
    display: flex;
    flex-direction: column;
}

.cart-label {
    font-size: 0.8rem;
    color: var(--text-light);
}

.cart-total {
    font-size: 1.5rem;
    font-weight: bold;
    color: #fff;
    font-family: 'Outfit', sans-serif;
}

.cart-details {
    font-size: 0.8rem;
    color: var(--accent-light);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 300px;
}

.btn-proceed {
    background: linear-gradient(135deg, #ff0080, #7928ca);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(121, 40, 202, 0.4);
    transition: transform 0.2s;
}

.btn-proceed:active {
    transform: scale(0.95);
}

@media (max-width: 767px) {
    .cart-container {
        flex-direction: row;
        /* 横並び維持 */
        padding: 0 15px;
    }

    .cart-details {
        display: none;
        /* スマホでは詳細は隠してスッキリさせる */
    }

    .btn-proceed {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}

/* Quantity Controls */
.qty-control {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
}

.btn-qty {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid var(--accent-color);
    background: transparent;
    color: var(--accent-color);
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.btn-qty:hover {
    background: var(--accent-color);
    color: #fff;
}

.qty-display {
    font-size: 1.2rem;
    font-weight: bold;
    color: #fff;
    min-width: 20px;
    text-align: center;
}

.btn-reset {
    margin-left: 10px;
    background: transparent;
    border: none;
    color: var(--text-light);
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0.6;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
}

.btn-reset:hover {
    color: #ff4757;
    /* Red accent for delete */
    opacity: 1;
    transform: scale(1.1);
}

.btn-clear-all {
    background: transparent;
    border: none;
    font-size: 1rem;
    cursor: pointer;
    margin-left: 8px;
    opacity: 0.6;
    transition: all 0.2s;
    vertical-align: middle;
}

.btn-clear-all:hover {
    opacity: 1;
    transform: scale(1.2) rotate(10deg);
}

/* Hero Quick Nav */
.hero-nav {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-top: 24px;
    flex-wrap: wrap;
}

.hero-nav a {
    color: #94a3b8;
    /* var(--text-light) の値が不明確な場合があるのでハードコードまたはフォールバック。今回はtext-lightが定義されているはずだが安全策 */
    /* 確認済みなら var(--text-light) でいいが、ここは安全のためHexで */
    font-size: 0.9rem;
    padding: 6px 16px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.hero-nav a:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    transform: translateY(-2px);
}

/* FAQ Section */
.faq-section {
    padding: var(--section-padding);
    background: var(--bg-dark);
}

.faq-grid {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: var(--accent-light);
    background: rgba(255, 255, 255, 0.05);
}

.faq-item[open] {
    border-color: var(--accent-color);
    background: rgba(79, 70, 229, 0.05);
}

.faq-question {
    padding: 20px 24px;
    cursor: pointer;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: space-between;
    list-style: none;
    /* Hide default triangle */
}

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

.q-icon {
    color: var(--accent-color);
    margin-right: 12px;
    font-weight: 800;
}

.toggle-icon {
    font-size: 1.2rem;
    color: var(--text-light);
    transition: transform 0.3s ease;
}

.faq-item[open] .toggle-icon {
    transform: rotate(45deg);
    color: var(--accent-color);
}

.faq-answer {
    padding: 0 24px 24px 24px;
    color: var(--text-light);
    line-height: 1.8;
    font-size: 0.95rem;
    animation: fadeIn 0.3s ease;
}

.faq-answer p {
    margin: 0;
    padding-left: 26px;
    border-left: 2px solid var(--accent-color);
    padding-left: 16px;
}


/* =========================================
   NAVIGATION STYLES (Consolidated)
   ========================================= */

/* --- Desktop Default Styles --- */
.navbar {
    display: block;
    /* Ensure visibility on desktop */
}

.navbar ul {
    display: flex;
    gap: 36px;
    padding: 0;
    margin: 0;
    list-style: none;
}

.navbar li {
    margin: 0;
}

.navbar a {
    font-weight: 500;
    color: var(--text-light);
    font-size: 0.9rem;
    position: relative;
    text-decoration: none;
    display: block;
}

.navbar a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width 0.3s;
}

.navbar a:hover {
    color: #fff;
}

.navbar a:hover::after {
    width: 100%;
}

.nav-sub {
    display: none;
    /* Hide subtitles on desktop */
}

/* Menu Toggle Button (Hidden on Desktop) */
.menu-toggle {
    display: none;
}

/* Text Accent Highlighting */
.text-accent {
    color: var(--accent-light);
    font-weight: 700;
    text-shadow: 0 0 10px rgba(79, 70, 229, 0.3);
}

.intro-title {
    display: block;
    font-weight: 700;
    font-size: 1.15em;
    color: #fff;
    margin-bottom: 24px;
    /* Space below the title */
    background: linear-gradient(120deg, transparent 0%, rgba(79, 70, 229, 0.3) 100%);
    padding: 8px 12px;
    border-left: 4px solid var(--accent-light);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.intro-highlight {
    font-weight: 700;
    color: #fff;
    background: linear-gradient(120deg, transparent 0%, rgba(79, 70, 229, 0.3) 100%);
    padding: 0 4px;
    border-bottom: 2px solid var(--accent-light);
}

/* Global Main Visual Styles */
.highlight-text {
    font-size: 1.3em;
    display: inline-block;
    margin-top: 24px;
    /* Increased top spacing */
    margin-bottom: 24px;
    /* Added bottom spacing */
    background: linear-gradient(135deg, #fff 0%, var(--accent-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 20px rgba(79, 70, 229, 0.5));
}

.aura-text {
    font-size: 1.25em;
    /* Slightly smaller than before (1.4em) */
    letter-spacing: 0.1em;
    /* Increased spacing (longer) */
    font-weight: 700;
    color: #fff;
    text-shadow:
        0 0 10px rgba(255, 255, 255, 0.8),
        0 0 20px rgba(79, 70, 229, 0.6),
        0 0 30px rgba(79, 70, 229, 0.4);
    animation: glowPulse 3s infinite alternate;
    display: inline-block;
}

@keyframes glowPulse {
    from {
        text-shadow:
            0 0 10px rgba(255, 255, 255, 0.8),
            0 0 20px rgba(79, 70, 229, 0.6);
    }

    to {
        text-shadow:
            0 0 15px rgba(255, 255, 255, 1),
            0 0 30px rgba(79, 70, 229, 0.9),
            0 0 45px rgba(79, 70, 229, 0.6);
    }
}

/* Adjust subtitle spacing */
.subtitle {
    margin-bottom: 24px;
    /* Increased from 16px */
}

/* Global Utility for Mobile Line Breaks */
.mobile-break {
    display: inline;
}

/* --- Mobile Styles (max-width: 768px) --- */
@media (max-width: 768px) {

    /* Hide Header Navigation entirely on mobile */
    .menu-toggle {
        display: none !important;
    }

    .navbar {
        display: none !important;
    }

    /* Force line break on mobile by making the span a block element */
    .mobile-break {
        display: block;
    }
}

/* Increase section spacing for better readability */
.service-section,
.pricing-section,
.works-section,
.faq-section,
.contact-section {
    padding-top: 140px;
    padding-bottom: 140px;
}

/* Adjust for mobile */
@media (max-width: 768px) {

    .service-section,
    .pricing-section,
    .works-section,
    .faq-section,
    .contact-section {
        padding-top: 100px;
        padding-bottom: 100px;
    }
}