/* 
---------------------------------------------------------
Blue Leaf Studio - Antigravity Theme 
--------------------------------------------------------- 
*/

:root {
    /* Color Palette */
    --color-white: #ffffff;
    --color-base: #fdfdfd;
    /* たっぷりとした余白用ベース */
    --color-main: #329ba7;
    /* ティールブルー (ボタン、アクセント) */
    --color-main-hover: #26848e;
    --color-sub: #d5d7d6;
    /* ライトグレー (うっすらとした図形・区切り) */
    --color-text-main: #333333;
    --color-text-muted: #666666;
    --color-bg-light: #f8f9fa;
    /* フッター等に使用 */

    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.75);
    --glass-border: 1px solid rgba(255, 255, 255, 0.5);
    --glass-blur: blur(12px);

    /* Hover Glass Overlay */
    --glass-overlay: rgba(255, 255, 255, 0.85);

    /* Soft Shadows (Antigravity effect) */
    --shadow-soft: 0 10px 30px rgba(50, 155, 167, 0.08);
    --shadow-float: 0 20px 40px rgba(50, 155, 167, 0.15);
    --shadow-header: 0 4px 20px rgba(0, 0, 0, 0.05);

    /* Typography */
    --font-heading: 'Jost', 'Noto Sans JP', sans-serif;
    --font-body: 'Noto Sans JP', sans-serif;

    /* Transitions */
    --transition-smooth: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    --transition-slow: all 0.8s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text-main);
    background-color: var(--color-base);
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    line-height: 1.4;
    font-weight: 600;
}

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

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
}

.section {
    padding: 120px 0;
}

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

.sect-title {
    font-size: 2rem;
    margin-bottom: 10px;
    color: var(--color-text-main);
}

.sect-subtitle {
    font-family: var(--font-heading);
    color: var(--color-sub);
    font-size: 1rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.sect-desc {
    color: var(--color-text-muted);
    font-size: 1.05rem;
}

.bg-light {
    background-color: var(--color-bg-light);
}

.mt-5 {
    margin-top: 50px;
}

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

/* =========================================================
UI Components (Buttons, Glass, Shadows)
   ========================================================= */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 500;
    cursor: pointer;
    text-align: center;
    border: none;
    transition: var(--transition-smooth);
}

.btn-primary {
    background-color: var(--color-main);
    color: var(--color-white);
}

.btn-large {
    padding: 18px 48px;
    font-size: 1.1rem;
}

.btn-float {
    box-shadow: 0 8px 20px rgba(50, 155, 167, 0.3);
}

.btn-float:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 25px rgba(50, 155, 167, 0.4);
    background-color: var(--color-main-hover);
}

/* Glass Card Base */
.glass-card {
    background: var(--color-white);
    /* フォールバック */
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-radius: 20px;
    box-shadow: var(--shadow-soft);
    padding: 40px;
    transition: var(--transition-smooth);
}

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

/* =========================================================
Animations
   ========================================================= */
@keyframes float {
    0% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-10px);
    }

    100% {
        transform: translateY(0px);
    }
}

.float-loop {
    animation: float 4s ease-in-out infinite;
}

/* Scroll Fade In */
.fade-in-up {
    opacity: 0;
    transform: translateY(40px);
    transition: var(--transition-slow);
}

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

.delay-1 {
    transition-delay: 0.2s;
}

.delay-2 {
    transition-delay: 0.4s;
}

/* =========================================================
Header (Sticky & Glassmorphism)
   ========================================================= */
/* ====== .header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.85);
======= */
    /* 白の半透明グラスモーフィズム 
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.5);
    transition: var(--transition-smooth);
}
*/

/* --- 既存の背景を消して、動くオーロラを強制適用 --- */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;

    /* 🌟 1. 背景色を一度「透明」にしてから、グラデーションを合成 */
    background-color: transparent !important; 
    
    /* 🌟 2. ベースの白(80%)とボタン色(#329ba7)を混ぜる */
    background-image: 
        radial-gradient(at 0% 0%, rgba(50, 155, 167, 0.2) 0px, transparent 50%), 
        radial-gradient(at 100% 100%, rgba(50, 155, 167, 0.15) 0px, transparent 50%),
        linear-gradient(rgba(255, 255, 255, 0.8), rgba(255, 255, 255, 0.8)) !important;

    background-size: 200% 200% !important;
    animation: aurora-move 18s ease-in-out infinite alternate !important;
    
    /* 🌟 3. ボカシ効果（背景が透けてさらに綺麗に） */
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    
    border-bottom: 1px solid rgba(50, 155, 167, 0.1);
}

/* 🌟 アニメーションを定義（ゆっくりした「呼吸」のような動き） */
@keyframes aurora-move {
    0% { background-position: 0% 0%; }
    50% { background-position: 100% 100%; }
    100% { background-position: 0% 100%; }
}


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

.header-container {
    display: flex;
    /* Flexboxレイアウト */
    justify-content: space-between;
    /* 要素を両端に配置 */
    align-items: center;
    width: 100%;
    padding: 15px 5%;
    /* 左右に広めのパディング */
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

/* ナビゲーション全体を強制的に右端へ寄せる */
.global-nav {
    margin-left: auto;
}

.nav-list {
    display: flex;
    gap: 30px;
    /* ゆったりとしたギャップ */
    align-items: center;
}

.nav-list>li>a {
    font-weight: 500;
    padding: 10px 0;
    position: relative;
}

.nav-list>li>a::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-main);
    transition: var(--transition-smooth);
}

.nav-list>li>a:hover::after {
    width: 100%;
}

/* Mega Menu */
.has-mega-menu {
    /* width: 100%にするため .header を絶対配置の基準にする */
    position: static;
}

.mega-menu {
    position: absolute;
    top: 100%;
    /* ヘッダー直下 */
    left: 0;
    width: 100%;
    /* 全幅 */
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-top: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
    padding: 40px 5%;
    /* ヘッダーの左右パディングと合わせる */
    opacity: 0;
    visibility: hidden;
    transform: translateY(15px);
    transition: var(--transition-smooth);
    pointer-events: none;
}

.has-mega-menu:hover .mega-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.mega-menu-inner {
    display: flex;
    gap: 30px;
}

.mega-menu-col {
    flex: 1;
}

.mega-menu-title {
    font-size: 0.9rem;
    color: var(--color-sub);
    margin-bottom: 15px;
    border-bottom: 1px solid var(--color-sub);
    padding-bottom: 5px;
}

.mega-menu-col ul li {
    margin-bottom: 10px;
}

.mega-menu-col ul li a {
    font-size: 0.95rem;
    color: var(--color-text-main);
    display: block;
}

.mega-menu-col ul li a:hover {
    color: var(--color-main);
    transform: translateX(5px);
}

.mega-menu::before {
    content: "";
    position: absolute;
    bottom: 100%; /* メニューの上端から上に向かって配置 */
    left: 0;
    width: 100%;
    height: 40px; /* ここが重要！Goodsの文字からメニューまでの隙間を埋める高さ。実際の隙間感に合わせて30px〜50pxで調整してください */
    background: transparent; /* 透明なので見た目には影響しません */
}
/* =========================================================
Main Visual (Hero Slider)
   ========================================================= */
.main-visual {
    height: 100vh;
    min-height: 700px;
    position: relative;
    overflow: hidden;
    background-color: var(--color-base);
    /* 背景にうっすらとした図形 */
    background-image: radial-gradient(circle at 80% 20%, rgba(213, 215, 214, 0.2) 0%, transparent 40%),
        radial-gradient(circle at 10% 80%, rgba(50, 155, 167, 0.05) 0%, transparent 40%);
}

.slider-container {
    position: relative;
    height: 100%;
    width: 100%;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    display: flex;
    align-items: center;
    padding: 0 10%;
    z-index: 1;
}

.slide.active {
    opacity: 1;
    z-index: 2;
}

.slide-content {
    flex: 1;
    max-width: 700px;
    transform: translateY(30px);
    opacity: 0;
    transition: var(--transition-slow);
    transition-delay: 0.3s;
}

.slide.active .slide-content {
    transform: translateY(0);
    opacity: 1;
}

.slide-title {
    font-size: 2.6vw;
    line-height: 1.6;
    margin-bottom: 20px;
    font-weight: 700;
}

.slide-desc {
    font-size: 1.6vw;
    color: var(--color-text-muted);
    margin-bottom: 40px;
}

/* Slider Mockups (Abstract representation for now) */
.slide-mockup {
    flex: 1;
    height: 100%;
    position: relative;
    transform: translateY(40px);
    opacity: 0;
    transition: var(--transition-slow);
    transition-delay: 0.5s;
    display: flex;
    justify-content: center;
    align-items: center;
}

.slide.active .slide-mockup {
    transform: translateY(0);
    opacity: 1;
    animation: float 6s ease-in-out infinite 1s;
    /* floating effect */
}

/* Mockup CSS art */
.mockup-frame {
    width: 320px;
    height: 600px;
    border-radius: 40px;
    background: var(--glass-bg);
    border: 8px solid var(--color-white);
    box-shadow: var(--shadow-float);
    padding: 10px;
    position: relative;
}

.mockup-screen {
    width: 100%;
    height: 100%;
    border-radius: 30px;
    background: linear-gradient(135deg, #fdfdfd, #ebf5f6);
    overflow: hidden;
}

.bg-teal {
    background: linear-gradient(135deg, var(--color-main), #5cc1cd);
    opacity: 0.1;
}

.m-card {
    width: 300px;
    height: 400px;
    background: var(--color-white);
    border-radius: 16px;
    box-shadow: var(--shadow-float);
    position: absolute;
    transform: rotate(5deg) translateX(30px);
}

.m-card:first-child {
    transform: rotate(-5deg) translateX(-40px) translateY(40px);
    background: #f4f6f5;
    z-index: -1;
}

.m-part {
    width: 280px;
    height: 100px;
    background: var(--color-white);
    border-radius: 12px;
    box-shadow: var(--shadow-soft);
    margin-bottom: 20px;
    transform: translateX(20px);
}

.m-part.short {
    width: 200px;
    transform: translateX(-20px);
}

/* Slider Indicators */
.slider-indicators {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 15px;
    z-index: 10;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--color-sub);
    border: none;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.indicator.active {
    background-color: var(--color-main);
    transform: scale(1.3);
}

/* =========================================================
Services Section (3 column)
   ========================================================= */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    text-align: center;
    position: relative;
    display: flex;
    flex-direction: column;
}

.icon-wrap {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: var(--color-base);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.03);
}

.icon-blob {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-main);
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: 15px;
}

.card-text {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    margin-bottom: 20px;
}

.price-box {
    background: #f4f7f8;
    padding: 15px;
    border-radius: 12px;
    margin-top: auto;
    /* bottom align */
}

.price-main {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-main);
}

.price-main .tax,
.price-main .period {
    font-size: 0.8rem;
    font-weight: 400;
}

.price-sub {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 5px;
}

/* =========================================================
Templates Grid
   ========================================================= */
.template-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.template-card {
    background: var(--color-sub);
    border-radius: 16px;
    overflow: hidden;
    display: block;
    position: relative;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-smooth);
}

.card-img-placeholder {
    height: 240px;
    background: #e8eaea;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    color: #a0a3a2;
    font-size: 1.5rem;
    letter-spacing: 0.1em;
    transition: var(--transition-smooth);
}

.template-card .card-body {
    padding: 25px;
    background: var(--color-white);
    transition: var(--transition-smooth);
}

.template-card .card-body h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--color-text-main);
    transition: var(--transition-smooth);
}

.template-card .card-body p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    transition: var(--transition-smooth);
}

/* Hover Action: Card floats, background to Teal */
.template-card:hover .card-body {
    background: var(--color-main);
}

.template-card:hover .card-body h3,
.template-card:hover .card-body p {
    color: var(--color-white);
}

.template-card:hover .card-img-placeholder {
    opacity: 0.9;
}

/* 画像を囲む枠の設定 */
.card-img-wrapper {
    width: 100%;
    /* 高さは全体のバランスを見て200px〜250px前後で調整してください */
    height: 220px; 
    overflow: hidden; /* ズームした時に画像が枠からはみ出ないようにする */
    /* カードの角丸に合わせて、上部の角だけ丸くする（既存のカードの角丸数値に合わせてください） */
    border-radius: 12px 12px 0 0; 
    background-color: #f8f9fa; /* 画像が読み込まれるまでの背景色 */
}

/* 画像自体の設定 */
.card-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* 枠のサイズに合わせて自動で綺麗にトリミング */
    transition: transform 0.5s ease; /* ズームの動きを滑らかに */
}

/* ホバー時のリッチな演出（画像がゆっくり少しだけ拡大する） */
.template-card:hover .card-img-wrapper img {
    transform: scale(1.05); 
}


/* =========================================================
Parts & Packages
   ========================================================= */
.parts-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

@media (max-width: 991px) {
    .parts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.part-card {
    padding: 30px 20px;
    text-align: center;
}

.part-card h3 {
    font-size: 1rem;
    margin-bottom: 10px;
    color: var(--color-main);
}

.part-card p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* =========================================================
Portfolio (Image Grid & Glass Overlay)
   ========================================================= */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.port-item {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    height: 280px;
    box-shadow: var(--shadow-soft);
}

.port-img {
    width: 100%;
    height: 100%;
    background: var(--color-sub);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.2rem;
    transition: transform 0.6s ease;
}

/* Glassmorphism Overlay */
.port-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--glass-overlay);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 30px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
}

.port-item:hover .port-img {
    transform: scale(1.05);
}

.port-item:hover .port-overlay {
    opacity: 1;
    visibility: visible;
}

.port-cat {
    color: var(--color-main);
    font-family: var(--font-heading);
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 10px;
    transform: translateY(15px);
    transition: var(--transition-smooth);
    opacity: 0;
}

.port-title {
    color: var(--color-text-main);
    font-size: 1.1rem;
    transform: translateY(15px);
    transition: var(--transition-smooth);
    transition-delay: 0.1s;
    opacity: 0;
}

.port-item:hover .port-cat,
.port-item:hover .port-title {
    transform: translateY(0);
    opacity: 1;
}

/* ポートフォリオの枠設定 */
.port-item {
    position: relative;
    width: 100%;
    aspect-ratio: 9 / 16; /* ここで縦長の9:16比率に固定します */
    border-radius: 12px;
    overflow: hidden; /* 枠からはみ出た部分を隠す */
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08); /* 浮遊感のある影 */
}

/* 画像を囲むコンテナ */
.port-img {
    width: 100%;
    height: 100%;
}

/* 差し込んだ画像本体の設定 */
.port-img img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* 枠に合わせてトリミング */
    object-position: top; /* 🌟重要：画像の「一番上」を基準に表示する */
    transition: object-position 4s ease; /* 4秒かけて滑らかに変化させる設定 */
}

/* 🌟 マウスホバーで、サイトのスクショが自動で下までスクロールする演出 */
.port-item:hover .port-img img {
    object-position: bottom; /* ホバーすると画像の「一番下」までスクロールする */
}

/* （参考）オーバーレイ文字の表示設定がもし無ければ、以下のような形で調整します */
.port-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 30px 20px 20px;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: #fff;
    opacity: 0; /* 最初は透明 */
    transition: opacity 0.4s ease;
}

.port-item:hover .port-overlay {
    opacity: 1; /* ホバーで文字がフワッと浮かび上がる */
}


/* =========================================================
About & Contact Split Window
   ========================================================= */
.sec-split-panel {
    display: flex;
    width: 100%;
    /* margin-top: 120px; */
    /* If needed, add spacing above */
}

@media (max-width: 991px) {
    .sec-split-panel {
        flex-direction: column;
    }
}

.split-left,
.split-right {
    flex: 1;
    padding: 120px 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.split-left {
    background-color: #f8f9fa;
    /* ごく薄いグレー */
}

.split-right {
    background-color: #f1f3f4;
    /* わずかに濃くしてコントラストをつける */
}

.split-content {
    max-width: 480px;
}

.split-content p {
    color: var(--color-text-muted);
}

/* =========================================================
Footer
   ========================================================= */
.footer {
    background-color: var(--color-white);
    padding: 80px 0 40px;
    border-top: 1px solid rgba(0, 0, 0, 0.03);
    /* 極力排除、薄い線のみ */
}

.footer-top {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 60px;
}

.f-col-brand h2 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.f-col-brand p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.f-col-links h3 {
    font-size: 1rem;
    margin-bottom: 20px;
}

.f-col-links ul li {
    margin-bottom: 12px;
}

.f-col-links ul li a {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.f-col-links ul li a:hover {
    color: var(--color-main);
}

.footer-bottom {
    text-align: center;
    border-top: 1px solid rgba(0, 0, 0, 0.03);
    padding-top: 30px;
}

.copyright {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

/* =========================================================
Responsive Utilities (Basic)
   ========================================================= */
@media (max-width: 991px) {

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

@media (max-width: 767px) {

    .services-grid,
    .template-grid,
    .portfolio-grid,
    .blog-grid,
    .parts-grid {
        grid-template-columns: 1fr;
    }

    /* Main Visual adjustments for mobile */
    .slide {
        padding: 0 5%;
        flex-direction: column;
        justify-content: center;
        text-align: center;
    }

    .slide-content {
        margin-bottom: 30px;
    }

    .slide-title {
        font-size: 1.8rem;
    }

    .slide-desc {
        font-size: 1rem;
        margin-bottom: 25px;
    }

    .slide-mockup {
        transform: scale(0.6) translateY(20px);
        margin-top: -40px;
    }

    /* Mobile Navigation */
    .nav-list {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--glass-bg);
        backdrop-filter: var(--glass-blur);
        -webkit-backdrop-filter: var(--glass-blur);
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.05);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transition: right 0.4s ease;
        z-index: 999;
    }

    .nav-list.is-open {
        right: 0;
    }

    .nav-list>li {
        margin: 15px 0;
    }

    .has-mega-menu .mega-menu {
        display: none;
        /* Hide mega menu on mobile for simplicity, or implement accordion */
    }

    /* Hamburger Menu Button */
    .menu-toggle {
        display: block;
        width: 30px;
        height: 24px;
        position: relative;
        background: transparent;
        border: none;
        cursor: pointer;
        z-index: 1000;
    }

    .menu-toggle span {
        display: block;
        width: 100%;
        height: 2px;
        background-color: var(--color-text-main);
        position: absolute;
        left: 0;
        transition: var(--transition-smooth);
        border-radius: 2px;
    }

    .menu-toggle span:nth-child(1) {
        top: 0;
    }

    .menu-toggle span:nth-child(2) {
        top: 11px;
    }

    .menu-toggle span:nth-child(3) {
        top: 22px;
    }

    .menu-toggle.is-open span:nth-child(1) {
        transform: rotate(45deg);
        top: 11px;
    }

    .menu-toggle.is-open span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.is-open span:nth-child(3) {
        transform: rotate(-45deg);
        top: 11px;
    }

    .header-container {
        padding: 0 20px;
    }

    .container {
        padding: 0 20px;
    }

    .split-left,
    .split-right {
        padding: 80px 40px;
    }
}

/* ① 犯人対策：スライダー側の「上下に動くアニメーション」を強制キャンセル */
.slide .slide-mockup,
.slide:not(.active) .slide-mockup {
    /* スライドが切り替わる際の余計な位置移動（落下）を完全に禁止する */
    transform: translate(0, 0) !important; 
    
    /* フェードアウト（透明度の変化）だけは許可する */
    transition: opacity 0.6s ease, visibility 0.6s ease !important; 
}

/* ② フワフワアニメーション（定番のtransformに戻します） */
@keyframes float-obj {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
}

/* ③ 画像への適用 */
.slide-mockup img {
    animation: float-obj 6s ease-in-out infinite;
    display: block;
    max-width: 100%;
    height: auto;
    filter: drop-shadow(0 20px 30px rgba(0, 0, 0, 0.15));
    
    /* 画像自身にも、スライダーからの余計な指示が入らないようにバリアを張る */
    transition: none !important; 
}

.recent-post-item {
    display: block;
    padding: 10px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: var(--transition-smooth);
}
.recent-post-item:hover {
    padding-left: 5px;
    color: var(--color-main);
}
.recent-date {
    font-size: 0.75rem;
    color: var(--color-sub);
}
.recent-title {
    font-size: 0.9rem;
    font-weight: 500;
    line-height: 1.4;
}