/* ==========================================
   CSS Variables & Base Reset
========================================== */
:root {
    --bg-color: #f4f3ef;
    --text-main: #18181b;
    --text-muted: #71717a;
    --accent-color: #2563eb;
    --accent-glow: rgba(37, 99, 235, 0.15);
    --card-bg: #ffffff;
    --card-border: rgba(0, 0, 0, 0.08);
    --font-en: 'Inter', sans-serif;
    --font-ja: 'Noto Sans JP', sans-serif;
    --transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1), background-color 0.4s cubic-bezier(0.16, 1, 0.3, 1), color 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

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

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

/* ==========================================
   Typography
========================================== */
.en-title {
    font-family: var(--font-en);
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

h1, h2, h3 {
    line-height: 1.3;
}

.section-title {
    text-align: center;
    margin-bottom: 2.5rem;
}

.section-title span {
    display: block;
    font-size: 1rem;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    letter-spacing: 0.2em;
}

.section-title h2 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
}

/* ==========================================
   Layout & Components
========================================== */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

section {
    padding: 4rem 0;
    position: relative;
    z-index: 1;
}

/* ボタンデザイン */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1.2rem 3rem;
    background: transparent;
    color: var(--text-main);
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    border: 1px solid var(--accent-color);
    border-radius: 50px;
    position: relative;
    overflow: hidden;
    z-index: 1;
    cursor: pointer;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0%;
    height: 100%;
    background: var(--accent-color);
    z-index: -1;
    transition: var(--transition);
}

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

.btn:hover {
    color: var(--bg-color);
    box-shadow: 0 0 20px var(--accent-glow);
}

.btn-primary {
    background: var(--accent-color);
    color: var(--bg-color);
}

.btn-primary::before {
    background: #ffffff;
}

/* ==========================================
   Header & Navigation
========================================== */
header {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.5rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    transition: var(--transition), opacity 0.4s ease, transform 0.4s ease;
}

/* PC：常に表示 */
@media (min-width: 769px) {
    header {
        opacity: 1;
        transform: translateY(0);
    }
}

/* モバイル：常に表示 */
@media (max-width: 768px) {
    header {
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
    }
}

header.scrolled {
    background: rgba(244, 243, 239, 0.92);
    backdrop-filter: blur(12px);
    padding: 1rem 5%;
    border-bottom: 1px solid var(--card-border);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
}

.logo {
    font-size: 1.5rem;
    color: var(--text-main);
}

.logo-img {
    height: 40px;
    width: auto;
    display: block;
    object-fit: contain;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

/* PC: サブdivを非表示にしてリンクを直接flexアイテムとして並べる */
@media (min-width: 769px) {
    .nav-page-links,
    .nav-social-links {
        display: contents;
    }
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
}

.nav-links a:hover {
    color: var(--accent-color);
}

.nav-cta {
    padding: 0.8rem 1.5rem;
    border: 1px solid var(--text-main);
    border-radius: 30px;
}

.nav-cta:hover {
    background: var(--text-main);
    color: var(--bg-color);
}

/* ハンバーガーボタン */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    border-radius: 8px;
    transition: background-color 0.2s;
}

.hamburger:hover {
    background: rgba(0, 0, 0, 0.06);
}

.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-main);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

header.nav-open .hamburger span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
header.nav-open .hamburger span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
header.nav-open .hamburger span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ==========================================
   Hero Section (ファーストビュー)
========================================== */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 5rem;
}

.hero-container {
    display: flex;
    align-items: center;
    gap: 5rem;
}

.hero-image {
    flex: 1;
    position: relative;
    flex-shrink: 0;
}

.hero-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.12);
    display: block;
}

.hero-float-card {
    position: absolute;
    bottom: -18px;
    left: -18px;
    background: #ffffff;
    border: 1px solid var(--card-border);
    border-radius: 14px;
    padding: 1rem 1.4rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.09);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

.hero-float-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 36px rgba(37, 99, 235, 0.15);
    border-color: rgba(37, 99, 235, 0.3);
}

.hero-float-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.1rem;
}

.hero-float-value {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-main);
}

/* 背景のアブストラクトな光 */
.hero-bg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100vw;
    height: 100vh;
    z-index: -1;
    background: radial-gradient(circle at 70% 30%, rgba(37, 99, 235, 0.06) 0%, transparent 55%),
                radial-gradient(circle at 20% 80%, rgba(37, 99, 235, 0.04) 0%, transparent 50%);
}

.hero-content {
    flex: 1;
}

.hero-subtitle {
    display: inline-block;
    color: var(--accent-color);
    font-weight: 600;
    letter-spacing: 0.1em;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    border-left: 3px solid var(--accent-color);
    padding-left: 1rem;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    margin-bottom: 2rem;
    line-height: 1.2;
}

.hero-title span {
    color: transparent;
    -webkit-text-stroke: 1px var(--text-main);
}

.hero-desc {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--text-muted);
    margin-bottom: 3rem;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
}

/* ==========================================
   Services Section
========================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 3rem 2rem;
    border-radius: 16px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-6px);
    border-color: rgba(37, 99, 235, 0.25);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), transparent);
    opacity: 0;
    transition: var(--transition);
}

.service-card:hover::before {
    opacity: 1;
}

.service-icon {
    width: 60px;
    height: 60px;
    background: rgba(37, 99, 235, 0.08);
    color: var(--accent-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

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

/* LLM対策をハイライト */
.service-card.highlight {
    border-color: rgba(37, 99, 235, 0.2);
    background: linear-gradient(180deg, rgba(37, 99, 235, 0.04) 0%, #ffffff 100%);
}

.badge-new {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: var(--accent-color);
    color: #ffffff;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    letter-spacing: 0.1em;
}

/* ==========================================
   Works Section (制作実績)
========================================== */
.works-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 のアスペクト比を維持 */
    height: 0;
    overflow: hidden;
    border-radius: 16px;
    border: 1px solid var(--card-border);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    transition: var(--transition);
}

.video-wrapper:hover {
    transform: translateY(-5px);
    border-color: rgba(37, 99, 235, 0.3);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* ==========================================
   Carousel（PC: 3枚表示 / モバイル: 1枚表示）
========================================== */
.carousel {
    position: relative;
    overflow: hidden;
    border-radius: 16px;
}

.carousel-track {
    display: flex;
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform;
}

.carousel-slide {
    flex-shrink: 0;
    box-sizing: border-box;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-main);
    border: 1px solid var(--card-border);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 10;
    backdrop-filter: blur(6px);
}

.carousel-btn:hover {
    background: var(--accent-color);
    color: var(--bg-color);
    border-color: var(--accent-color);
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1.2rem;
}

.carousel-dot {
    border-radius: 50%;
    background: var(--card-border);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    padding: 0;
}

.carousel-dot.active {
    background: var(--accent-color);
    transform: scale(1.3);
}

/* PC: 3枚同時表示 */
@media (min-width: 769px) {
    .carousel-slide {
        min-width: calc(100% / 3);
        padding: 0 1rem;
    }

    .carousel-btn {
        width: 48px;
        height: 48px;
        font-size: 1rem;
    }

    .carousel-btn--prev { left: 0.5rem; }
    .carousel-btn--next { right: 0.5rem; }

    .carousel-dot {
        width: 10px;
        height: 10px;
    }
}

/* モバイル: 1枚表示 */
@media (max-width: 768px) {
    .carousel-slide {
        min-width: 100%;
    }

    .carousel-btn {
        width: 40px;
        height: 40px;
        font-size: 0.9rem;
    }

    .carousel-btn--prev { left: 0.5rem; }
    .carousel-btn--next { right: 0.5rem; }

    .carousel-dot {
        width: 8px;
        height: 8px;
    }
}

/* Webサイト実績用のスタイル */
.web-work-wrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 */
    height: 0;
    overflow: hidden;
    border-radius: 16px;
    border: 1px solid var(--card-border);
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: var(--transition);
    display: block;
    background: #e8e7e3;
}

.web-work-wrapper:hover {
    transform: translateY(-5px);
    border-color: rgba(37, 99, 235, 0.3);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
}

.web-work-wrapper img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.web-work-wrapper:hover img {
    opacity: 0.4;
    transform: scale(1.05);
}

.web-work-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--text-main);
    font-weight: 700;
    font-size: 1.2rem;
    opacity: 0;
    transition: var(--transition);
    text-align: center;
    width: 100%;
    padding: 1rem;
}

.web-work-wrapper:hover .web-work-overlay {
    opacity: 1;
}

/* 制作実績のカテゴリ見出し */
.category-title {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--card-border);
    display: inline-block;
    color: var(--text-main);
}

.category-title i {
    color: var(--accent-color);
    margin-right: 0.8rem;
}

/* ==========================================
   About / Concept Section
========================================== */
.about-wrap {
    display: flex;
    align-items: center;
    gap: 5rem;
}

.about-image {
    flex: 1;
    position: relative;
}

.about-image img {
    border-radius: 16px;
    box-shadow: 0 12px 40px rgba(0,0,0,0.1);
}

.about-image::after {
    content: '';
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 100%;
    height: 100%;
    border: 2px solid var(--accent-color);
    border-radius: 16px;
    z-index: -1;
}

.about-content {
    flex: 1;
}

.about-content h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.about-content p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.feature-list {
    list-style: none;
    margin-top: 2rem;
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
    font-weight: 500;
}

.feature-list i {
    color: var(--accent-color);
    margin-top: 0.3rem;
}

/* ==========================================
   FAQ Section (LLM対策＆ユーザーサポート)
========================================== */
.faq-section {
    background: #eceae5;
}

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

.faq-item {
    margin-bottom: 1.5rem;
    border: 1px solid var(--card-border);
    border-radius: 12px;
    background: var(--card-bg);
    transition: var(--transition);
}

.faq-item:hover {
    border-color: rgba(37, 99, 235, 0.25);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.faq-item summary {
    padding: 1.5rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    list-style: none;
    position: relative;
    outline: none;
    display: flex;
    align-items: center;
}

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

.faq-item summary::after {
    content: '\f067'; /* fontawesome plus */
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    position: absolute;
    right: 2rem;
    color: var(--accent-color);
    transition: var(--transition);
}

.faq-item[open] summary::after {
    content: '\f068'; /* fontawesome minus */
    transform: rotate(180deg);
}

.faq-item p {
    padding: 0 2rem 1.5rem;
    color: var(--text-muted);
    line-height: 1.8;
    border-top: 1px dashed var(--card-border);
    margin-top: 0.5rem;
    padding-top: 1.5rem;
}

/* ==========================================
   Pricing Section
========================================== */
.pricing-section {
    background: #eceae5;
}

.pricing-block {
    margin-bottom: 4rem;
}

.pricing-block-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    padding-bottom: 0.8rem;
    border-bottom: 2px solid var(--card-border);
    display: inline-block;
}

.pricing-block-title i {
    color: var(--accent-color);
    margin-right: 0.7rem;
}

.pricing-block-desc {
    color: var(--text-muted);
    margin-bottom: 2rem;
    margin-top: -0.5rem;
}

/* スポット料金グリッド */
.spot-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.spot-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 2rem 1.8rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.spot-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 4px;
    background: linear-gradient(90deg, var(--accent-color), transparent);
    opacity: 0;
    transition: var(--transition);
}

.spot-card:hover {
    transform: translateY(-5px);
    border-color: rgba(37, 99, 235, 0.25);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

.spot-card:hover::before {
    opacity: 1;
}

.spot-card--ai {
    border-color: rgba(37, 99, 235, 0.2);
    background: linear-gradient(160deg, rgba(37, 99, 235, 0.04) 0%, #ffffff 60%);
}

.spot-card .spot-icon {
    width: 52px;
    height: 52px;
    background: rgba(37, 99, 235, 0.08);
    color: var(--accent-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.2rem;
}

.spot-card h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
}

.spot-price {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--accent-color);
    font-family: var(--font-en);
    margin-bottom: 0.8rem;
    line-height: 1;
}

.spot-price .price-from {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-muted);
}

.spot-card p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* 記事制作カード */
.article-pricing-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 2rem 2.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    transition: var(--transition);
}

.article-pricing-card:hover {
    border-color: rgba(37, 99, 235, 0.25);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

.article-pricing-left {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    flex: 1;
}

.article-pricing-left .spot-icon {
    width: 52px;
    height: 52px;
    background: rgba(37, 99, 235, 0.08);
    color: var(--accent-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.article-pricing-left h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
}

.article-pricing-left p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.7;
}

.article-pricing-right {
    text-align: right;
    flex-shrink: 0;
}

.article-pricing-right .spot-price {
    margin-bottom: 0.2rem;
}

.price-unit-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* 月額プランカード */
.plans-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    align-items: start;
}

.plan-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 2.2rem 2rem;
    transition: var(--transition);
    position: relative;
    display: flex;
    flex-direction: column;
}

.plan-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.09);
}

.plan-card--recommended {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 1px var(--accent-color), 0 16px 48px rgba(37, 99, 235, 0.15);
    transform: translateY(-8px);
}

.plan-card--recommended:hover {
    transform: translateY(-14px);
}

.plan-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-color);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.35rem 1.2rem;
    border-radius: 20px;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

.plan-header {
    margin-bottom: 1.8rem;
}

.plan-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    display: block;
    margin-bottom: 0.6rem;
}

.plan-price {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-main);
    font-family: var(--font-en);
    line-height: 1;
}

.plan-card--recommended .plan-price {
    color: var(--accent-color);
}

.plan-price .price-unit {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-muted);
}

.plan-features {
    list-style: none;
    margin-bottom: 1.5rem;
    flex: 1;
}

.plan-features li {
    display: flex;
    align-items: flex-start;
    gap: 0.7rem;
    font-size: 0.9rem;
    padding: 0.5rem 0;
    border-bottom: 1px dashed var(--card-border);
    color: var(--text-main);
}

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

.plan-features i {
    color: var(--accent-color);
    margin-top: 0.25rem;
    flex-shrink: 0;
    font-size: 0.75rem;
}

.plan-note {
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    padding: 0.8rem 1rem;
    background: rgba(37, 99, 235, 0.04);
    border-radius: 8px;
    border-left: 3px solid rgba(37, 99, 235, 0.2);
}

.plan-btn {
    width: 100%;
    padding: 0.9rem 1rem;
    font-size: 0.9rem;
}

.pricing-note {
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 1rem;
}

@media (max-width: 992px) {
    .plans-grid {
        grid-template-columns: 1fr;
    }
    .plan-card--recommended {
        transform: none;
        order: -1;
    }
    .plan-card--recommended:hover {
        transform: translateY(-5px);
    }
}

@media (max-width: 768px) {
    .spot-grid {
        grid-template-columns: 1fr;
    }
    .article-pricing-card {
        flex-direction: column;
        align-items: flex-start;
        padding: 1.5rem;
    }
    .article-pricing-right {
        text-align: left;
        width: 100%;
    }
}

/* ==========================================
   Contact Section
========================================== */
.contact-section {
    background: #f4f3ef;
    border-top: 1px solid var(--card-border);
}

.contact-box {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 4rem;
    border-radius: 24px;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.contact-box h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.contact-box p {
    color: var(--text-muted);
    margin-bottom: 3rem;
}

/* ==========================================
   Contact Form
========================================== */
#contact-form {
    text-align: left;
    margin-top: 2.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

.required {
    color: var(--accent-color);
    margin-left: 2px;
}

.form-group input:not([type="checkbox"]),
.form-group select,
.form-group textarea {
    width: 100%;
    background: #fafaf8;
    border: 1px solid rgba(0, 0, 0, 0.12);
    border-radius: 10px;
    padding: 0.9rem 1.2rem;
    color: var(--text-main);
    font-size: 1rem;
    font-family: var(--font-ja);
    transition: var(--transition);
    outline: none;
    appearance: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group select option {
    background: #ffffff;
    color: var(--text-main);
}

.form-group input:not([type="checkbox"]):focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px var(--accent-glow);
    background: #ffffff;
}

.form-group textarea {
    resize: vertical;
    min-height: 130px;
}

/* チェックボックスグループ */
.checkbox-group {
    background: #fafaf8;
    border: 1px solid rgba(0, 0, 0, 0.12);
    border-radius: 10px;
    padding: 1.2rem 1.4rem;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.checkbox-category {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--accent-color);
    background: rgba(37, 99, 235, 0.08);
    border-left: 3px solid var(--accent-color);
    letter-spacing: 0.05em;
    margin-top: 1.2rem;
    margin-bottom: 0.6rem;
    padding: 0.4rem 0.8rem;
    border-radius: 0 6px 6px 0;
    align-self: stretch;
}

.checkbox-category:first-child {
    margin-top: 0;
}

.checkbox-items {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.2rem 1rem;
}

.checkbox-group .checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.45rem 0.5rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text-main);
    margin-bottom: 0;
    transition: background-color 0.15s, color 0.15s;
    user-select: none;
}

.checkbox-group .checkbox-label:hover {
    background: rgba(37, 99, 235, 0.06);
    color: var(--accent-color);
}

.checkbox-group .checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    min-width: 16px;
    accent-color: var(--accent-color);
    cursor: pointer;
    margin: 0;
    flex-shrink: 0;
}

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

.form-submit {
    width: 100%;
    margin-top: 0.5rem;
    font-size: 1rem;
}

.form-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

.form-status {
    font-size: 0.95rem;
    font-weight: 600;
    min-height: 1.5rem;
    margin-bottom: 1rem;
    text-align: center;
}

.form-status.success { color: #16a34a; }
.form-status.error   { color: #dc2626; }

.contact-divider {
    margin: 2rem 0 1.5rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    position: relative;
}

.contact-divider::before,
.contact-divider::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 38%;
    height: 1px;
    background: var(--card-border);
}

.contact-divider::before { left: 0; }
.contact-divider::after  { right: 0; }

/* ==========================================
   Scroll To Top Button
========================================== */
#scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    background: var(--accent-color);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
    opacity: 0;
    transform: translateY(12px);
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease, background-color 0.2s;
    z-index: 999;
}

#scroll-top.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

#scroll-top:hover {
    background: #1d4ed8;
}

/* ==========================================
   Footer
========================================== */
footer {
    padding: 3rem 5%;
    text-align: center;
    border-top: 1px solid var(--card-border);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ==========================================
   Animations (Scroll Reveal)
========================================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================
   Responsive Design
========================================== */
@media (max-width: 992px) {
    .about-wrap {
        flex-direction: column;
    }
    .about-image::after {
        display: none;
    }
}

@media (max-width: 768px) {
    header {
        flex-direction: row;
        padding: 1rem 5%;
    }
    .hamburger {
        display: flex;
    }
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        flex-direction: column;
        gap: 0;
        background: rgba(244, 243, 239, 0.97);
        backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--card-border);
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
        padding: 1.5rem;
    }
    header.nav-open .nav-links {
        display: flex;
    }
    .nav-page-links {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        align-items: center;
        gap: 1rem;
        padding-bottom: 1rem;
        border-bottom: 1px solid var(--card-border);
        margin-bottom: 1rem;
    }
    .nav-social-links {
        display: flex;
        justify-content: center;
        gap: 1.5rem;
    }
    .hero {
        height: auto;
        min-height: 100svh;
        align-items: flex-start;
        padding-top: 5rem;
        padding-bottom: 3rem;
        overflow: visible;
    }
    .hero-container {
        flex-direction: column;
        gap: 2rem;
        padding-bottom: 0;
    }
    .hero-image {
        width: 100%;
        order: -1;
    }
    .hero-image img {
        max-height: 240px;
        object-fit: cover;
        width: 100%;
    }
    .hero-float-card {
        bottom: -12px;
        left: 12px;
    }
    .hero-buttons {
        flex-direction: column;
    }
    .btn {
        width: 100%;
    }
    .contact-box {
        padding: 2rem 1.5rem;
    }
}