* {
    margin: 0;
    padding: 0;
    font-family: 'Verdana', 'Hiragino Sans', sans-serif;
}

body {
    overflow-x: hidden;
    background: url(../img/banner_bg.jpg);
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.92);
    z-index: 0;
}

body > * {
    position: relative;
    z-index: 1;
}

ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

p {
    color: #2c2c2c;
    font-size: 16px;
    line-height: 30px;
    margin-bottom: 22px;
    word-wrap: break-word;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 10000;
    height: 65px;
    background: rgba(44, 44, 44, 0.95);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.navbar {
    margin: 0;
    border: none;
}

.navbar-inverse {
    background: transparent;
    border: none;
}

.navbar-brand {
    display: none;
}

.navbar-toggle {
    margin-top: 15px;
    border-color: #fff;
}

.navbar-toggle .icon-bar {
    background: #fff;
}

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

.navbar-nav {
    float: none;
    display: inline-block;
}

.navbar-nav>li {
    float: left;
}

.navbar-nav>li>a {
    color: #fff !important;
    font-size: 13px;
    font-weight: 600;
    line-height: 65px;
    height: 65px;
    padding: 0 20px;
    transition: all 0.3s;
}

.navbar-nav>li>a:hover {
    background: rgba(255,255,255,0.1);
}

.baner-content {
    width: 100%;
    padding: 120px 0 80px;
    margin-top: 65px;
}

.baner-content .text-content h2 {
    font-size: 46px;
    font-weight: 700;
    color: #2c2c2c;
    text-align: center;
    letter-spacing: -0.5px;
}

#portfolio {
    padding: 60px 0;
}

.content-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
}

.inner-container .row {
    display: flex;
    gap: 40px;
    margin: 0;
}

.inner-container .col-md-4 {
    width: 260px;
    flex-shrink: 0;
    position: sticky;
    top: 85px;
    height: fit-content;
}

.section-heading {
    background: rgba(255,255,255,0.8);
    padding: 35px;
    border-left: 4px solid #2c2c2c;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

.section-heading h4 {
    font-size: 18px;
    font-weight: 700;
    color: #2c2c2c;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.line-dec {
    width: 40px;
    height: 3px;
    background: #2c2c2c;
    margin-bottom: 20px;
}

.filter-categories ul li {
    margin-bottom: 10px;
}

.filter-categories ul li a {
    color: #2c2c2c;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    display: block;
    padding: 10px 12px;
    background: rgba(255,255,255,0.5);
    border-left: 3px solid transparent;
    transition: all 0.3s;
}

.filter-categories ul li a:hover {
    background: rgba(255,255,255,0.9);
    border-left-color: #2c2c2c;
}

.inner-container .col-md-8 {
    flex: 1;
}

.content-card {
    background: rgba(255,255,255,0.85);
    padding: 45px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    margin-bottom: 30px;
}

.projects-holder-3 h3 {
    font-size: 34px;
    font-weight: 700;
    color: #2c2c2c;
    margin-bottom: 30px;
}

.projects-holder-3 p {
    font-size: 16px;
    line-height: 30px;
    color: #2c2c2c;
}

.projects-holder-3 img {
    display: none;
}

footer {
    background: rgba(44, 44, 44, 0.95);
    padding: 60px 40px;
}

footer .logo a {
    color: #fff;
    text-decoration: none;
    font-size: 20px;
    font-weight: 700;
    display: block;
    text-align: center;
    margin-bottom: 15px;
}

footer p {
    color: rgba(255,255,255,0.7);
    font-size: 13px;
    text-align: center;
    margin: 0;
}

@media (max-width: 991px) {
    .inner-container .row {
        flex-direction: column;
    }
    
    .inner-container .col-md-4 {
        width: 100%;
        position: static;
    }
}

@media (max-width: 767px) {
    .navbar-nav>li>a {
        line-height: normal;
        height: auto;
        padding: 15px 20px;
    }
    
    .navbar-collapse {
        background: rgba(44, 44, 44, 0.98);
    }
    
    .baner-content {
        padding: 100px 30px 70px;
    }
    
    .baner-content .text-content h2 {
        font-size: 34px;
    }
    
    .content-wrapper {
        padding: 0 30px;
    }
    
    .content-card {
        padding: 35px 25px;
    }
}

/* containerの幅制限を解除 */
.inner-container.container {
    max-width: none;
    width: 100%;
    padding: 0;
}