/* roulang page: index */
:root{
    --color-primary:#006D77;
    --color-secondary:#E76F51;
    --color-dark:#0E3A3F;
    --color-bg:#F9F8F5;
    --color-surface:#FFFFFF;
    --color-text:#1F2933;
    --color-text-secondary:#52606D;
    --color-text-muted:#9AA5B1;
    --color-border:#E7E3D9;
    --color-success:#3E7B4C;
    --color-warning:#D48814;
    --color-error:#D6455D;
    --container-max:1140px;
    --radius-sm:8px;
    --radius-md:12px;
    --radius-lg:16px;
    --shadow-sm:0 2px 8px rgba(0,0,0,0.04);
    --shadow-md:0 8px 20px rgba(0,0,0,0.08);
    --shadow-lg:0 16px 40px rgba(0,0,0,0.10);
    --transition-fast:0.2s ease;
    --transition-slow:0.35s ease;
    --font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
    font-family:var(--font-family);
    background-color:var(--color-bg);
    color:var(--color-text);
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{text-decoration:none;color:var(--color-primary);transition:color var(--transition-fast);}
a:hover{color:var(--color-secondary);}
ul,ol{list-style-position:inside;}
.container{max-width:var(--container-max);padding-left:20px;padding-right:20px;}
.btn{border-radius:var(--radius-sm);font-weight:600;transition:all var(--transition-fast);padding:12px 28px;font-size:16px;line-height:1.5;border:0;}
.btn-primary-custom{
    background:var(--color-secondary);
    color:#fff;
    box-shadow:0 4px 14px rgba(231,111,81,0.3);
    padding:14px 36px;
    border-radius:10px;
    font-weight:600;
}
.btn-primary-custom:hover{
    background:#d95f40;
    color:#fff;
    transform:translateY(-2px);
    box-shadow:0 8px 24px rgba(231,111,81,0.4);
}
.btn-primary-custom:active{transform:translateY(0);box-shadow:0 2px 8px rgba(231,111,81,0.3);}
.btn-outline-custom{
    background:transparent;
    color:var(--color-primary);
    border:1.5px solid var(--color-primary);
    padding:12px 30px;
    border-radius:10px;
    font-weight:600;
}
.btn-outline-custom:hover{
    background:rgba(0,109,119,0.08);
    color:var(--color-primary);
    border-color:var(--color-primary);
    transform:translateY(-2px);
}
.btn-nav-cta{
    background:var(--color-secondary);
    color:#fff;
    padding:12px 30px;
    border-radius:10px;
    font-weight:600;
    font-size:15px;
    letter-spacing:0.3px;
    box-shadow:0 4px 16px rgba(231,111,81,0.35);
    transition:all var(--transition-fast);
    display:inline-block;
}
.btn-nav-cta:hover{
    background:#d95f40;
    color:#fff;
    transform:translateY(-2px);
    box-shadow:0 8px 24px rgba(231,111,81,0.45);
}
.btn-nav-cta:active{transform:translateY(0);}
.badge-tag{
    display:inline-block;
    background:rgba(0,109,119,0.12);
    color:var(--color-primary);
    font-size:13px;
    font-weight:500;
    padding:4px 12px;
    border-radius:50px;
    letter-spacing:0.3px;
}
/*=========== NAV ===========*/
.header-main{
    background:rgba(249,248,245,0.95);
    backdrop-filter:blur(12px);
    box-shadow:0 2px 20px rgba(0,0,0,0.04);
    position:sticky;
    top:0;
    z-index:1000;
    border-bottom:1px solid rgba(0,0,0,0.04);
}
.navbar-custom{
    padding-top:0;
    padding-bottom:0;
    min-height:76px;
}
.navbar-brand-custom{
    display:flex;
    align-items:center;
    gap:10px;
    font-weight:700;
    font-size:24px;
    color:var(--color-primary);
    letter-spacing:0.5px;
}
.navbar-brand-custom .brand-icon{
    width:38px;
    height:38px;
    background:var(--color-primary);
    border-radius:10px;
    display:flex;
    align-items:center;
    justify-content:center;
    color:#fff;
    font-size:16px;
    font-weight:700;
    box-shadow:0 4px 12px rgba(0,109,119,0.25);
}
.navbar-custom .nav-link{
    color:var(--color-text-secondary);
    font-weight:500;
    font-size:15px;
    padding:12px 18px !important;
    position:relative;
    transition:color var(--transition-fast);
}
.navbar-custom .nav-link::after{
    content:'';
    position:absolute;
    bottom:0;
    left:18px;
    right:18px;
    height:2px;
    background:var(--color-secondary);
    transform:scaleX(0);
    transform-origin:left;
    transition:transform 0.3s ease;
}
.navbar-custom .nav-link:hover{color:var(--color-primary);}
.navbar-custom .nav-link:hover::after{transform:scaleX(1);}
.navbar-custom .nav-link.active{
    color:var(--color-primary);
    font-weight:600;
}
.navbar-custom .nav-link.active::after{transform:scaleX(1);}
.navbar-toggler-custom{
    border:1px solid var(--color-border);
    padding:6px 10px;
    border-radius:8px;
    background:transparent;
    color:var(--color-primary);
    font-size:18px;
}
.navbar-toggler-custom:focus{
    outline:2px solid rgba(0,109,119,0.25);
    box-shadow:none;
}
@media (max-width:991px){
    .navbar-custom .navbar-collapse{
        background:#fff;
        padding:16px 20px;
        border-radius:12px;
        box-shadow:var(--shadow-md);
        margin-top:12px;
        border:1px solid var(--color-border);
    }
    .navbar-custom .nav-link{padding:10px 0 !important;}
    .navbar-custom .nav-link::after{display:none;}
    .navbar-custom .btn-nav-cta{margin-top:10px;display:inline-block;}
}
/*=========== HERO ===========*/
.hero-section{
    position:relative;
    padding:100px 0 100px;
    background:var(--color-bg);
    overflow:hidden;
}
.hero-section::before{
    content:'';
    position:absolute;
    top:-160px;
    right:-120px;
    width:420px;
    height:420px;
    background:radial-gradient(circle,rgba(0,109,119,0.12) 0%,transparent 70%);
    border-radius:50%;
}
.hero-section::after{
    content:'';
    position:absolute;
    bottom:-100px;
    left:-80px;
    width:300px;
    height:300px;
    background:radial-gradient(circle,rgba(231,111,81,0.10) 0%,transparent 70%);
    border-radius:50%;
}
.hero-content{
    position:relative;
    z-index:2;
}
.hero-badge{
    display:inline-block;
    background:rgba(0,109,119,0.10);
    border:1px solid rgba(0,109,119,0.18);
    color:var(--color-primary);
    padding:8px 18px;
    border-radius:50px;
    font-size:14px;
    font-weight:500;
    letter-spacing:0.5px;
    margin-bottom:24px;
}
.hero-title{
    font-size:42px;
    font-weight:700;
    color:var(--color-text);
    line-height:1.25;
    letter-spacing:-0.5px;
    margin-bottom:20px;
}
.hero-title span{
    color:var(--color-primary);
    position:relative;
}
.hero-subtitle{
    font-size:17px;
    color:var(--color-text-secondary);
    line-height:1.8;
    max-width:520px;
    margin-bottom:32px;
    font-weight:400;
}
.hero-cta-group{
    display:flex;
    gap:16px;
    flex-wrap:wrap;
    margin-bottom:40px;
}
.hero-scroll-indicator{
    position:absolute;
    bottom:30px;
    left:50%;
    transform:translateX(-50%);
    color:var(--color-secondary);
    font-size:22px;
    opacity:0.6;
    animation:bounce 2s infinite;
    z-index:5;
}
@keyframes bounce{
    0%,100%{transform:translateX(-50%) translateY(0);}
    50%{transform:translateX(-50%) translateY(10px);}
}
.hero-visual{
    position:relative;
    z-index:2;
    border-radius:var(--radius-lg);
    overflow:hidden;
    box-shadow:var(--shadow-lg);
    aspect-ratio:4/3;
    background:var(--color-primary);
}
.hero-visual img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform 0.6s ease;
}
.hero-visual:hover img{transform:scale(1.03);}
.hero-visual-overlay{
    position:absolute;
    top:0;
    left:0;
    right:0;
    bottom:0;
    background:linear-gradient(135deg,rgba(14,58,63,0.85) 0%,rgba(0,109,119,0.35) 100%);
    display:flex;
    flex-direction:column;
    justify-content:flex-end;
    padding:36px;
    color:#fff;
}
.hero-visual-overlay .overlay-tag{
    background:rgba(255,255,255,0.2);
    display:inline-block;
    padding:6px 14px;
    border-radius:50px;
    font-size:13px;
    font-weight:500;
    margin-bottom:12px;
    width:fit-content;
    backdrop-filter:blur(4px);
}
.hero-visual-overlay h3{
    font-size:22px;
    font-weight:600;
    margin-bottom:6px;
}
.hero-visual-overlay p{
    font-size:14px;
    opacity:0.9;
    margin:0;
}
@media (max-width:991px){
    .hero-section{padding:70px 0 80px;}
    .hero-title{font-size:32px;}
    .hero-visual{margin-top:40px;}
}
@media (max-width:576px){
    .hero-title{font-size:28px;}
    .hero-subtitle{font-size:16px;}
    .hero-section{padding:50px 0 60px;}
}
/*=========== SECTION GENERIC ===========*/
.section-padding{padding:80px 0;}
.section-padding-sm{padding:50px 0;}
.section-heading{
    text-align:center;
    margin-bottom:50px;
    position:relative;
}
.section-heading .section-tag{
    display:inline-block;
    background:rgba(231,111,81,0.12);
    color:var(--color-secondary);
    font-size:13px;
    font-weight:500;
    padding:5px 14px;
    border-radius:50px;
    letter-spacing:1px;
    margin-bottom:12px;
    text-transform:uppercase;
}
.section-heading h2{
    font-size:30px;
    font-weight:700;
    color:var(--color-text);
    margin-bottom:12px;
    line-height:1.3;
    letter-spacing:-0.3px;
}
.section-heading p{
    color:var(--color-text-secondary);
    font-size:16px;
    max-width:640px;
    margin:0 auto;
}
@media (max-width:768px){
    .section-padding{padding:50px 0;}
    .section-heading{margin-bottom:36px;}
    .section-heading h2{font-size:24px;}
}
/*=========== STEPS ===========*/
.steps-section{
    background:#fff;
    border-top:1px solid var(--color-border);
    border-bottom:1px solid var(--color-border);
}
.steps-wrapper{
    display:flex;
    gap:0;
    margin:0 -20px;
    position:relative;
}
.step-item{
    flex:1;
    padding:0 30px;
    position:relative;
    text-align:left;
}
.step-item::after{
    content:'\f054';
    font-family:'Font Awesome 6 Free';
    font-weight:900;
    position:absolute;
    right:0;
    top:50%;
    transform:translateY(-50%);
    color:var(--color-secondary);
    font-size:16px;
    opacity:0.6;
}
.step-item:last-child::after{display:none;}
.step-number{
    width:48px;
    height:48px;
    background:var(--color-primary);
    color:#fff;
    font-size:20px;
    font-weight:700;
    display:flex;
    align-items:center;
    justify-content:center;
    border-radius:50%;
    margin-bottom:18px;
    box-shadow:0 6px 16px rgba(0,109,119,0.28);
}
.step-item h3{
    font-size:18px;
    font-weight:600;
    margin-bottom:8px;
    color:var(--color-text);
}
.step-item p{
    color:var(--color-text-secondary);
    font-size:14px;
    margin:0;
}
@media (max-width:991px){
    .steps-wrapper{flex-direction:column;gap:24px;margin:0;}
    .step-item{padding:0;padding-left:0;text-align:left;}
    .step-item::after{
        content:'\f078';
        right:auto;
        top:auto;
        bottom:-18px;
        left:24px;
        transform:none;
    }
    .step-item:last-child::after{display:none;}
}
@media (max-width:768px){
    .step-item p{font-size:15px;}
}
/*=========== SERVICES / FEATURES ===========*/
.features-section{background:var(--color-bg);}
.feature-list-wrapper{
    display:flex;
    flex-direction:column;
    gap:20px;
}
.feature-item{
    display:flex;
    align-items:flex-start;
    background:#fff;
    border-radius:var(--radius-md);
    padding:24px 28px;
    border:1px solid var(--color-border);
    box-shadow:var(--shadow-sm);
    transition:all var(--transition-fast);
}
.feature-item:hover{
    box-shadow:var(--shadow-md);
    transform:translateY(-3px);
    border-left:4px solid var(--color-primary);
}
.feature-icon{
    width:52px;
    height:52px;
    background:rgba(0,109,119,0.10);
    border-radius:12px;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:20px;
    color:var(--color-primary);
    margin-right:20px;
    flex-shrink:0;
}
.feature-content h3{
    font-size:18px;
    font-weight:600;
    margin-bottom:6px;
    color:var(--color-text);
}
.feature-content p{
    color:var(--color-text-secondary);
    font-size:15px;
    margin:0;
}
/*=========== SHOWCASE / CASES ===========*/
.cases-section{background:#fff;}
.case-row{
    display:flex;
    align-items:center;
    gap:40px;
    margin-bottom:60px;
}
.case-row:last-child{margin-bottom:0;}
.case-row.reverse{flex-direction:row-reverse;}
.case-image{
    flex:1;
    border-radius:var(--radius-md);
    overflow:hidden;
    box-shadow:var(--shadow-md);
    aspect-ratio:16/10;
    background-color:var(--color-primary);
}
.case-image img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform 0.6s ease;
}
.case-image:hover img{transform:scale(1.04);}
.case-text{flex:1;}
.case-text .badge-tag{margin-bottom:12px;}
.case-text h3{
    font-size:22px;
    font-weight:600;
    color:var(--color-text);
    margin-bottom:10px;
}
.case-text p{
    color:var(--color-text-secondary);
    font-size:15px;
    margin-bottom:16px;
}
.case-metrics{
    display:flex;
    gap:24px;
    margin-top:20px;
}
.case-metric .metric-value{
    font-size:26px;
    font-weight:700;
    color:var(--color-primary);
}
.case-metric .metric-label{
    font-size:13px;
    color:var(--color-text-muted);
}
@media (max-width:991px){
    .case-row,.case-row.reverse{flex-direction:column;gap:24px;margin-bottom:40px;}
    .case-text{padding:0 10px;}
}
@media (max-width:768px){
    .case-metrics{flex-direction:column;gap:12px;}
}
/*=========== CMS LIST ===========*/
.cms-section{background:var(--color-bg);}
.cms-card{
    background:#fff;
    border:1px solid var(--color-border);
    border-radius:var(--radius-md);
    padding:24px;
    transition:all var(--transition-fast);
    height:100%;
    display:block;
    box-shadow:var(--shadow-sm);
    position:relative;
    overflow:hidden;
}
.cms-card::before{
    content:'';
    position:absolute;
    top:0;
    left:0;
    width:100%;
    height:3px;
    background:var(--color-primary);
    transform:scaleX(0);
    transform-origin:left;
    transition:transform 0.4s ease;
}
.cms-card:hover{
    box-shadow:var(--shadow-md);
    transform:translateY(-4px);
    border-color:var(--color-primary);
}
.cms-card:hover::before{transform:scaleX(1);}
.cms-card .cms-meta{
    display:flex;
    align-items:center;
    gap:10px;
    margin-bottom:10px;
    font-size:13px;
    color:var(--color-text-muted);
}
.cms-card .cms-meta .badge-tag{margin-bottom:0;}
.cms-card h3{
    font-size:17px;
    font-weight:600;
    color:var(--color-text);
    margin-bottom:8px;
    line-height:1.5;
}
.cms-card .cms-excerpt{
    color:var(--color-text-secondary);
    font-size:14px;
    line-height:1.7;
    margin:0;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
}
.cms-empty{
    border:2px dashed var(--color-border);
    border-radius:var(--radius-md);
    padding:40px;
    text-align:center;
    color:var(--color-text-muted);
    background:#fff;
}
.cms-empty i{
    font-size:36px;
    margin-bottom:12px;
    display:block;
    color:var(--color-border);
}
.cms-empty p{margin:0;}
/*=========== FAQ ===========*/
.faq-section{background:var(--color-dark);}
.faq-section .section-heading h2{color:#fff;}
.faq-section .section-heading p{color:rgba(255,255,255,0.7);}
.faq-left{
    background:rgba(255,255,255,0.04);
    border:1px solid rgba(255,255,255,0.1);
    border-radius:var(--radius-md);
    padding:32px;
    color:#fff;
    height:100%;
}
.faq-left h3{
    font-size:22px;
    font-weight:600;
    margin-bottom:14px;
}
.faq-left p{
    color:rgba(255,255,255,0.75);
    font-size:15px;
}
.faq-accordion .accordion-item{
    background:rgba(255,255,255,0.04);
    border:1px solid rgba(255,255,255,0.1);
    border-radius:10px;
    margin-bottom:12px;
    overflow:hidden;
}
.faq-accordion .accordion-button{
    background:transparent;
    color:#fff;
    font-weight:600;
    padding:18px 22px;
    font-size:16px;
    border-radius:0;
}
.faq-accordion .accordion-button:not(.collapsed){
    background:rgba(0,109,119,0.25);
    color:#fff;
    box-shadow:none;
}
.faq-accordion .accordion-button:focus{
    box-shadow:0 0 0 3px rgba(0,109,119,0.35);
    border-radius:10px;
}
.faq-accordion .accordion-button::after{
    font-family:'Font Awesome 6 Free';
    content:'\2b';
    font-weight:900;
    background-image:none;
    transition:transform 0.3s ease;
}
.faq-accordion .accordion-button:not(.collapsed)::after{
    content:'\2b';
    transform:rotate(45deg);
    background-image:none;
}
.faq-accordion .accordion-body{
    color:rgba(255,255,255,0.8);
    padding:18px 22px;
    font-size:15px;
    line-height:1.7;
    border-top:1px solid rgba(255,255,255,0.08);
}
@media (max-width:991px){
    .faq-left{margin-bottom:20px;}
}
/*=========== CTA / FORM ===========*/
.cta-section{
    background:var(--color-dark);
    position:relative;
    overflow:hidden;
}
.cta-section::before{
    content:'';
    position:absolute;
    top:-50%;
    right:-20%;
    width:400px;
    height:400px;
    background:rgba(231,111,81,0.08);
    border-radius:50%;
}
.cta-section::after{
    content:'';
    position:absolute;
    bottom:-30%;
    left:-10%;
    width:300px;
    height:300px;
    background:rgba(0,109,119,0.15);
    border-radius:50%;
}
.cta-container{position:relative;z-index:2;}
.cta-content{
    background:rgba(255,255,255,0.05);
    border:1px solid rgba(255,255,255,0.12);
    border-radius:var(--radius-lg);
    padding:48px;
    position:relative;
    backdrop-filter:blur(8px);
}
.cta-heading{
    font-size:30px;
    font-weight:700;
    color:#fff;
    margin-bottom:12px;
}
.cta-subheading{
    color:rgba(255,255,255,0.75);
    font-size:16px;
    margin-bottom:30px;
}
.contact-form .form-label{
    color:rgba(255,255,255,0.85);
    font-size:14px;
    font-weight:500;
}
.contact-form .form-control{
    background:rgba(255,255,255,0.08);
    border:1px solid rgba(255,255,255,0.15);
    border-radius:var(--radius-sm);
    color:#fff;
    height:44px;
    padding:10px 16px;
    font-size:15px;
    transition:all var(--transition-fast);
}
.contact-form .form-control::placeholder{color:rgba(255,255,255,0.4);}
.contact-form .form-control:focus{
    background:rgba(255,255,255,0.12);
    border-color:var(--color-primary);
    box-shadow:0 0 0 3px rgba(0,109,119,0.3);
    color:#fff;
}
.contact-form textarea.form-control{height:auto;min-height:100px;resize:vertical;}
.cta-stats{
    display:flex;
    gap:30px;
    margin-top:24px;
    flex-wrap:wrap;
}
.cta-stat{
    text-align:center;
    color:#fff;
}
.cta-stat .stat-value{
    font-size:32px;
    font-weight:700;
    color:var(--color-secondary);
}
.cta-stat .stat-label{
    font-size:13px;
    color:rgba(255,255,255,0.6);
}
@media (max-width:768px){
    .cta-content{padding:30px 24px;}
    .cta-heading{font-size:24px;}
}
/*=========== FOOTER ===========*/
.footer-main{
    background:var(--color-dark);
    color:rgba(255,255,255,0.7);
    border-top:1px solid rgba(255,255,255,0.06);
}
.footer-top{padding:60px 0 40px;}
.footer-brand{
    font-size:22px;
    font-weight:700;
    color:#fff;
    display:flex;
    align-items:center;
    gap:10px;
    margin-bottom:14px;
}
.footer-brand .brand-icon{
    width:34px;
    height:34px;
    background:var(--color-secondary);
    border-radius:8px;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:14px;
}
.footer-desc{
    font-size:14px;
    line-height:1.7;
    color:rgba(255,255,255,0.55);
    max-width:320px;
}
.footer-title{
    font-size:16px;
    font-weight:600;
    color:#fff;
    margin-bottom:15px;
}
.footer-links{
    list-style:none;
    padding:0;
    margin:0;
}
.footer-links li{margin-bottom:8px;}
.footer-links a{
    color:rgba(255,255,255,0.6);
    font-size:14px;
    transition:all var(--transition-fast);
}
.footer-links a:hover{
    color:var(--color-secondary);
    padding-left:5px;
}
.footer-bottom{
    border-top:1px solid rgba(255,255,255,0.08);
    padding:20px 0;
    font-size:13px;
    color:rgba(255,255,255,0.4);
}
@media (max-width:768px){
    .footer-top .row > div{margin-bottom:24px;}
}
/*=========== INNER PAGE HERO ===========*/
.inner-hero{
    background:var(--color-dark);
    padding:70px 0;
    position:relative;
    overflow:hidden;
}
.inner-hero::before{
    content:'';
    position:absolute;
    top:-60%;
    right:-10%;
    width:300px;
    height:300px;
    background:rgba(231,111,81,0.1);
    border-radius:50%;
}
.inner-hero .container{position:relative;z-index:2;}
.inner-hero h1{
    color:#fff;
    font-size:34px;
    font-weight:700;
    margin-bottom:12px;
}
.inner-hero p{
    color:rgba(255,255,255,0.75);
    font-size:16px;
    max-width:560px;
}
.inner-hero .breadcrumb{
    background:transparent;
    margin-bottom:12px;
}
.inner-hero .breadcrumb-item a{
    color:var(--color-secondary);
    text-decoration:none;
}
.inner-hero .breadcrumb-item.active{color:rgba(255,255,255,0.5);}
@media (max-width:768px){
    .inner-hero{padding:50px 0;}
    .inner-hero h1{font-size:28px;}
}
/*=========== ARTICLE PAGE ===========*/
.article-page{padding:50px 0 70px;}
.article-container{
    max-width:880px;
    margin:0 auto;
}
.article-meta{
    margin-bottom:24px;
    display:flex;
    align-items:center;
    gap:15px;
    flex-wrap:wrap;
}
.article-body{
    background:#fff;
    border:1px solid var(--color-border);
    border-radius:var(--radius-md);
    padding:40px;
    box-shadow:var(--shadow-sm);
}
.article-body h2{
    font-size:24px;
    font-weight:600;
    margin:24px 0 12px;
    color:var(--color-text);
}
.article-body h3{
    font-size:20px;
    font-weight:600;
    margin:20px 0 10px;
}
.article-body p{margin-bottom:16px;color:var(--color-text-secondary);}
.article-body blockquote{
    border-left:4px solid var(--color-secondary);
    background:var(--color-bg);
    padding:16px 20px;
    margin:20px 0;
    border-radius:0 8px 8px 0;
}
.article-body img{
    border-radius:var(--radius-sm);
    margin:20px 0;
    max-width:100%;
}
.article-body ul{
    list-style:disc;
    padding-left:24px;
    margin-bottom:16px;
}
.article-body ol{list-style:decimal;padding-left:24px;margin-bottom:16px;}
.related-section{
    max-width:880px;
    margin:30px auto 0;
}
.related-card{
    background:#fff;
    border:1px solid var(--color-border);
    border-radius:var(--radius-sm);
    padding:18px;
    transition:all var(--transition-fast);
    display:block;
    height:100%;
}
.related-card:hover{
    border-color:var(--color-primary);
    box-shadow:var(--shadow-sm);
    transform:translateY(-3px);
}
.related-card h5{font-size:16px;margin-bottom:6px;}
.related-card p{
    font-size:14px;
    color:var(--color-text-secondary);
    margin:0;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
}
@media (max-width:768px){
    .article-body{padding:24px 20px;}
}
/*=========== CATEGORY PAGE ===========*/
.cat-negative{
    background:#fff;
    border:1px solid var(--color-border);
    border-radius:var(--radius-md);
    padding:32px;
    box-shadow:var(--shadow-sm);
    height:100%;
    transition:all var(--transition-fast);
}
.cat-negative:hover{
    box-shadow:var(--shadow-md);
    transform:translateY(-4px);
    border-top:4px solid var(--color-primary);
}
.cat-negative .cat-icon{
    width:50px;
    height:50px;
    background:rgba(0,109,119,0.1);
    border-radius:50%;
    display:flex;
    align-items:center;
    justify-content:center;
    color:var(--color-primary);
    font-size:20px;
    margin-bottom:16px;
}
.cat-negative h3{
    font-size:18px;
    font-weight:600;
    margin-bottom:8px;
}
.cat-negative p{color:var(--color-text-secondary);font-size:14px;margin:0;}
.cat-flow{
    display:flex;
    align-items:center;
    gap:24px;
    background:#fff;
    border-radius:var(--radius-md);
    padding:28px 32px;
    border:1px solid var(--color-border);
    box-shadow:var(--shadow-sm);
}
.cat-flow .flow-number{
    width:44px;
    height:44px;
    background:var(--color-secondary);
    color:#fff;
    border-radius:50%;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:18px;
    font-weight:600;
    flex-shrink:0;
}
.cat-flow h4{font-size:17px;font-weight:600;margin-bottom:4px;}
.cat-flow p{color:var(--color-text-secondary);font-size:14px;margin:0;}
.cat-cta-banner{
    background:var(--color-primary);
    border-radius:var(--radius-md);
    padding:36px 40px;
    color:#fff;
    display:flex;
    align-items:center;
    justify-content:space-between;
    flex-wrap:wrap;
    gap:20px;
}
.cat-cta-banner h3{font-size:22px;margin-bottom:6px;}
.cat-cta-banner p{margin:0;color:rgba(255,255,255,0.85);font-size:15px;}
@media (max-width:768px){
    .cat-flow{flex-direction:column;text-align:center;}
    .cat-cta-banner{flex-direction:column;text-align:center;padding:28px 24px;}
}
/*=========== EXTRA UTILITIES ===========*/
.text-primary-custom{color:var(--color-primary)!important;}
.text-secondary-custom{color:var(--color-secondary)!important;}
.btn:focus,.btn:active:focus,.form-control:focus{outline:none;}
.form-control:focus{
    border-color:var(--color-primary);
    box-shadow:0 0 0 3px rgba(0,109,119,0.15);
}
.overflow-hidden{overflow:hidden;}
/*=========== RESPONSIVE FIXES ===========*/
@media (max-width:576px){
    .btn-nav-cta{padding:10px 20px;font-size:14px;}
    .hero-cta-group .btn{padding:12px 22px;font-size:14px;}
    .case-metric .metric-value{font-size:22px;}
    .cta-stats{gap:16px;}
    .cta-stat .stat-value{font-size:26px;}
    .footer-bottom{text-align:center;}
}
/* hide scroll indicator on small */
@media (max-width:576px){
    .hero-scroll-indicator{display:none;}
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --color-primary: #006D77;
  --color-primary-dark: #005A63;
  --color-primary-light: rgba(0, 109, 119, 0.08);
  --color-secondary: #E76F51;
  --color-secondary-dark: #D65A3E;
  --color-dark: #0E3A3F;
  --color-bg: #F9F8F5;
  --color-card: #FFFFFF;
  --color-text: #1F2933;
  --color-text-secondary: #52606D;
  --color-text-muted: #9AA5B1;
  --color-border: #E7E3D9;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
  --space-section: 88px;
  --container-width: 1140px;
  --font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover {
  color: var(--color-primary-dark);
}
button,
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
}
.container {
  max-width: var(--container-width);
}

/* ===== 导航 ===== */
.header-main {
  background: var(--color-dark);
  position: sticky;
  top: 0;
  z-index: 1030;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.18);
}
.navbar-custom {
  min-height: 76px;
  padding-top: 10px;
  padding-bottom: 10px;
}
.navbar-brand-custom {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  color: #ffffff !important;
  letter-spacing: 0.5px;
}
.brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: var(--color-secondary);
  border-radius: 10px;
  color: #fff;
  font-size: 18px;
  flex-shrink: 0;
}
.navbar-custom .navbar-nav {
  gap: 6px;
}
.navbar-custom .nav-link {
  color: rgba(255, 255, 255, 0.85);
  font-size: 15px;
  font-weight: 500;
  padding: 10px 18px !important;
  border-radius: 8px;
  position: relative;
  transition: color 0.2s ease, background-color 0.2s ease;
}
.navbar-custom .nav-link:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
}
.navbar-custom .nav-link.active {
  color: #ffffff;
  font-weight: 600;
}
.navbar-custom .nav-link.active::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 4px;
  height: 2px;
  background: var(--color-secondary);
  border-radius: 2px;
}
.navbar-toggler-custom {
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #ffffff;
  padding: 8px 12px;
  border-radius: 8px;
  background: transparent;
}
.navbar-toggler-custom:hover,
.navbar-toggler-custom:focus {
  border-color: rgba(255, 255, 255, 0.6);
  outline: none;
  box-shadow: none;
}
.btn-nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-secondary);
  color: #ffffff;
  font-weight: 600;
  font-size: 15px;
  padding: 13px 32px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(231, 111, 81, 0.35);
  transition: background-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}
.btn-nav-cta:hover {
  background: var(--color-secondary-dark);
  color: #ffffff;
  box-shadow: 0 6px 20px rgba(231, 111, 81, 0.45);
  transform: translateY(-2px);
}
.btn-nav-cta:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(231, 111, 81, 0.4);
}

/* ===== 分类页 Hero ===== */
.cat-banner {
  position: relative;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  padding: 104px 0 100px;
  text-align: center;
}
.cat-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(14, 58, 63, 0.92) 0%, rgba(0, 109, 119, 0.78) 100%);
}
.cat-banner-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
  margin: 0 auto;
}
.cat-banner-tag {
  display: inline-block;
  background: rgba(231, 111, 81, 0.2);
  color: #f0b3a2;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 1px;
  padding: 6px 18px;
  border-radius: 30px;
  margin-bottom: 20px;
  border: 1px solid rgba(231, 111, 81, 0.4);
}
.cat-banner h1 {
  font-size: 42px;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.25;
  margin-bottom: 18px;
}
.cat-banner p {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.8;
  margin-bottom: 30px;
}
.btn-banner {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-secondary);
  color: #fff;
  font-weight: 600;
  font-size: 16px;
  padding: 14px 36px;
  border-radius: 10px;
  border: none;
  box-shadow: 0 6px 20px rgba(231, 111, 81, 0.4);
  transition: background-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.btn-banner:hover {
  background: var(--color-secondary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(231, 111, 81, 0.5);
}

/* ===== 通用区块 ===== */
.section {
  padding: var(--space-section) 0;
}
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}
.section-head .section-tag {
  display: inline-block;
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 10px;
}
.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
  margin-bottom: 14px;
}
.section-head p {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* ===== 分类简介 ===== */
.cat-intro {
  background: var(--color-bg);
  padding-top: 56px;
}
.cat-intro .intro-inner {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px 48px;
  box-shadow: var(--shadow-sm);
}
.cat-intro .intro-inner h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
}
.cat-intro .intro-inner p {
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.9;
  margin-bottom: 14px;
}
.cat-intro .intro-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}
.cat-intro .intro-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 30px;
}

/* ===== 图文块 ===== */
.cat-feature {
  background: var(--color-bg);
}
.cat-feature + .cat-feature {
  border-top: 1px solid rgba(14, 58, 63, 0.05);
}
.cat-feature .feature-inner {
  align-items: center;
  row-gap: 28px;
}
.cat-feature .feature-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.cat-feature .feature-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.cat-feature .feature-media:hover img {
  transform: scale(1.03);
}
.cat-feature .feature-body {
  padding: 0 12px;
}
.feature-tag {
  display: inline-block;
  background: var(--color-secondary);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 6px;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.cat-feature .feature-body h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 14px;
}
.cat-feature .feature-body p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.9;
  margin-bottom: 12px;
}
.feature-list {
  list-style: none;
  padding: 0;
  margin: 16px 0 0;
}
.feature-list li {
  position: relative;
  padding-left: 24px;
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}
.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
}

/* ===== 流程区 ===== */
.cat-flow {
  background: var(--color-dark);
  color: #ffffff;
}
.cat-flow .section-head h2 {
  color: #ffffff;
}
.cat-flow .section-head p {
  color: rgba(255, 255, 255, 0.75);
}
.flow-wrapper {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  margin-top: 20px;
}
.flow-step {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  transition: background-color 0.3s ease, transform 0.3s ease;
}
.flow-step:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-4px);
}
.flow-step .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  background: var(--color-secondary);
  color: #ffffff;
  font-size: 20px;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 18px;
  box-shadow: 0 8px 20px rgba(231, 111, 81, 0.35);
}
.flow-step h4 {
  font-size: 18px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 10px;
}
.flow-step p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.7;
  margin: 0;
}

/* ===== FAQ ===== */
.cat-faq {
  background: var(--color-bg);
}
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}
.accordion-custom .accordion-item {
  border: 1px solid var(--color-border);
  border-radius: 10px !important;
  margin-bottom: 16px;
  overflow: hidden;
  background: var(--color-card);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.accordion-custom .accordion-item:has(.accordion-button:not(.collapsed)) {
  border-color: rgba(0, 109, 119, 0.4);
  box-shadow: 0 4px 16px rgba(0, 109, 119, 0.08);
}
.accordion-custom .accordion-button {
  background: var(--color-card);
  color: var(--color-text);
  font-size: 16px;
  font-weight: 600;
  padding: 18px 24px;
  border: none;
  box-shadow: none !important;
  border-radius: 10px !important;
}
.accordion-custom .accordion-button:not(.collapsed) {
  background: var(--color-primary-light);
  color: var(--color-primary);
}
.accordion-custom .accordion-button:focus {
  box-shadow: 0 0 0 3px rgba(0, 109, 119, 0.15);
  border-radius: 10px;
}
.accordion-custom .accordion-button::after {
  background-image: none;
  content: "\f067";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  width: auto;
  height: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--color-primary);
  transition: transform 0.3s ease;
}
.accordion-custom .accordion-button:not(.collapsed)::after {
  transform: rotate(45deg);
  color: var(--color-primary);
}
.accordion-custom .accordion-body {
  padding: 0 24px 22px;
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.8;
}

/* ===== 底部 CTA ===== */
.cat-cta {
  background: var(--color-bg);
  padding: 0 0 88px;
}
.cta-inner {
  background: linear-gradient(135deg, var(--color-dark) 0%, #0a4f56 100%);
  border-radius: var(--radius-lg);
  padding: 52px 56px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  position: relative;
  overflow: hidden;
}
.cta-inner::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 180px;
  height: 180px;
  background: rgba(231, 111, 81, 0.2);
  border-radius: 50%;
}
.cta-text {
  flex: 1 1 320px;
  position: relative;
  z-index: 1;
}
.cta-text h3 {
  font-size: 26px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 10px;
}
.cta-text p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 15px;
  margin: 0;
}
.cta-btn {
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}
.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-secondary);
  color: #ffffff;
  font-size: 16px;
  font-weight: 600;
  padding: 14px 36px;
  border-radius: 10px;
  border: none;
  box-shadow: 0 6px 20px rgba(231, 111, 81, 0.4);
  transition: background-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.btn-cta:hover {
  background: var(--color-secondary-dark);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(231, 111, 81, 0.5);
}

/* ===== 页脚 ===== */
.footer-main {
  background: var(--color-dark);
  color: rgba(255, 255, 255, 0.8);
  padding-top: 60px;
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 16px;
}
.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.65);
  max-width: 360px;
}
.footer-title {
  font-size: 16px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}
.footer-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 2px;
  background: var(--color-secondary);
}
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links li {
  margin-bottom: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
}
.footer-links a {
  color: rgba(255, 255, 255, 0.65);
  transition: color 0.2s ease, padding-left 0.2s ease;
}
.footer-links a:hover {
  color: #ffffff;
  padding-left: 4px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  margin-top: 40px;
  padding: 20px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

/* ===== 响应式 ===== */
@media (max-width: 991.98px) {
  .navbar-custom .navbar-collapse {
    background: var(--color-dark);
    border-radius: 0 0 12px 12px;
    padding: 16px;
    margin-top: 8px;
  }
  .navbar-custom .nav-link {
    padding: 12px 16px !important;
  }
  .navbar-custom .nav-link.active::after {
    left: 16px;
    bottom: 4px;
  }
  .cat-banner {
    padding: 80px 0;
  }
  .cat-banner h1 {
    font-size: 34px;
  }
  .flow-wrapper {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 767.98px) {
  :root {
    --space-section: 60px;
  }
  .cat-banner {
    padding: 64px 0;
  }
  .cat-banner h1 {
    font-size: 30px;
  }
  .cat-banner p {
    font-size: 15px;
  }
  .section-head h2 {
    font-size: 26px;
  }
  .cat-feature .feature-body {
    padding: 0;
  }
  .cta-inner {
    padding: 40px 28px;
  }
}
@media (max-width: 575.98px) {
  .flow-wrapper {
    grid-template-columns: 1fr;
  }
  .cat-intro .intro-inner {
    padding: 28px 22px;
  }
  .cta-inner {
    padding: 32px 22px;
    text-align: center;
    justify-content: center;
  }
  .cta-btn {
    width: 100%;
    text-align: center;
  }
  .btn-cta {
    width: 100%;
    justify-content: center;
  }
}

/* roulang page: article */
:root {
    --color-primary: #006D77;
    --color-primary-dark: #004E56;
    --color-primary-soft: rgba(0, 109, 119, 0.08);
    --color-secondary: #E76F51;
    --color-secondary-dark: #C95A3E;
    --color-dark: #0E3A3F;
    --color-bg: #F9F8F5;
    --color-white: #FFFFFF;
    --color-text: #1F2933;
    --color-text-light: #52606D;
    --color-text-muted: #9AA5B1;
    --color-border: #E7E3D9;
    --container-max: 1140px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
    --transition-fast: 0.2s ease;
    --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

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

a:hover {
    color: var(--color-primary-dark);
}

img {
    max-width: 100%;
    height: auto;
    border: 0;
}

button,
input {
    font-family: inherit;
}

.container {
    max-width: var(--container-max);
}

.header-main {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
}

.navbar-custom {
    padding: 14px 0;
    min-height: 72px;
}

.navbar-brand-custom {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.navbar-brand-custom:hover {
    color: var(--color-primary);
}

.brand-icon {
    width: 40px;
    height: 40px;
    background: var(--color-primary);
    color: #FFFFFF;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.navbar-custom .navbar-nav {
    align-items: center;
    gap: 4px;
}

.navbar-custom .navbar-nav .nav-link {
    font-size: 16px;
    font-weight: 500;
    color: var(--color-text-light);
    padding: 10px 18px;
    border-bottom: 2px solid transparent;
    transition: color var(--transition-fast), border-color var(--transition-fast);
    border-radius: 0;
}

.navbar-custom .navbar-nav .nav-link:hover {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.navbar-custom .navbar-nav .nav-link.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
    font-weight: 600;
}

.btn-nav-cta {
    display: inline-block;
    background: var(--color-secondary);
    color: #FFFFFF;
    border-radius: 10px;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    box-shadow: 0 4px 14px rgba(231, 111, 81, 0.28);
    transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
    border: none;
    cursor: pointer;
    white-space: nowrap;
}

.btn-nav-cta:hover {
    background: var(--color-secondary-dark);
    color: #FFFFFF;
    box-shadow: 0 6px 18px rgba(231, 111, 81, 0.36);
    transform: translateY(-2px);
}

.btn-nav-cta:active {
    transform: translateY(1px);
}

.navbar-toggler-custom {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    padding: 8px 12px;
    background: transparent;
}

.navbar-toggler-custom:focus {
    box-shadow: 0 0 0 0.2rem rgba(0, 109, 119, 0.15);
    outline: none;
}

.article-hero {
    position: relative;
    padding: 52px 0 88px;
    background: linear-gradient(135deg, rgba(14, 58, 63, 0.94), rgba(0, 109, 119, 0.84)), url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
    color: #FFFFFF;
    border-bottom: 4px solid var(--color-secondary);
}

.breadcrumb-custom {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    margin-bottom: 28px;
    color: rgba(255, 255, 255, 0.7);
}

.breadcrumb-custom a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.breadcrumb-custom a:hover {
    color: var(--color-secondary);
}

.breadcrumb-custom .sep {
    color: rgba(255, 255, 255, 0.4);
}

.breadcrumb-custom .current {
    color: rgba(255, 255, 255, 0.65);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 320px;
}

.article-hero-title {
    font-size: 38px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 16px;
    max-width: 880px;
    color: #FFFFFF;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 14px;
}

.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: rgba(255, 255, 255, 0.8);
}

.site-main {
    padding: 0 0 64px;
}

.article-content-wrap {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 48px 56px;
    max-width: 880px;
    margin: -40px auto 0;
    position: relative;
}

.article-content {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text);
}

.article-content h2 {
    font-size: 26px;
    font-weight: 700;
    margin-top: 40px;
    margin-bottom: 16px;
    color: var(--color-text);
    padding-bottom: 8px;
    border-bottom: 2px solid var(--color-primary);
}

.article-content h3 {
    font-size: 20px;
    font-weight: 600;
    margin-top: 32px;
    margin-bottom: 12px;
    color: var(--color-text);
}

.article-content p {
    margin-bottom: 16px;
}

.article-content a {
    color: var(--color-primary);
    text-decoration: underline;
}

.article-content a:hover {
    color: var(--color-secondary-dark);
}

.article-content ul,
.article-content ol {
    margin-bottom: 16px;
    padding-left: 1.5em;
}

.article-content li {
    margin-bottom: 8px;
}

.article-content blockquote {
    border-left: 4px solid var(--color-primary);
    background: var(--color-primary-soft);
    padding: 14px 18px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    margin-bottom: 16px;
    color: var(--color-text-light);
}

.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: 16px 0;
}

.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 16px;
}

.article-content table th,
.article-content table td {
    border: 1px solid var(--color-border);
    padding: 10px 12px;
}

.article-content table th {
    background: var(--color-bg);
    font-weight: 600;
}

.article-content pre {
    background: var(--color-dark);
    color: #E8F1F2;
    padding: 16px;
    border-radius: var(--radius-sm);
    overflow-x: auto;
    font-size: 14px;
}

.article-empty {
    text-align: center;
    padding: 80px 40px;
}

.article-empty .empty-icon {
    width: 64px;
    height: 64px;
    line-height: 64px;
    border-radius: 50%;
    background: var(--color-primary-soft);
    color: var(--color-primary);
    font-size: 26px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.article-empty h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text);
}

.article-empty p {
    color: var(--color-text-light);
    margin-bottom: 24px;
}

.article-footer {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
}

.btn-primary-custom {
    display: inline-block;
    background: var(--color-secondary);
    color: #FFFFFF;
    border: none;
    border-radius: var(--radius-sm);
    padding: 13px 32px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.btn-primary-custom:hover {
    background: var(--color-secondary-dark);
    color: #FFFFFF;
    box-shadow: 0 6px 16px rgba(231, 111, 81, 0.3);
    transform: translateY(-1px);
}

.btn-primary-custom:active {
    transform: translateY(1px);
}

.btn-outline-custom {
    display: inline-block;
    background: var(--color-white);
    color: var(--color-primary);
    border: 1.5px solid var(--color-primary);
    border-radius: var(--radius-sm);
    padding: 12px 30px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.btn-outline-custom:hover {
    background: var(--color-primary-soft);
    color: var(--color-primary-dark);
    transform: translateY(-1px);
}

.btn-outline-custom:active {
    transform: translateY(1px);
}

.related-section {
    padding: 56px 0 40px;
    background: var(--color-bg);
}

.related-title {
    font-size: 28px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 36px;
    color: var(--color-text);
}

.related-subtitle {
    text-align: center;
    color: var(--color-text-light);
    margin-top: -24px;
    margin-bottom: 32px;
    font-size: 15px;
}

.related-card {
    display: flex;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    text-decoration: none;
    color: inherit;
    height: 100%;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.related-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    color: inherit;
    border-color: var(--color-primary);
}

.related-card-img {
    width: 220px;
    min-height: 150px;
    flex-shrink: 0;
    overflow: hidden;
}

.related-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.related-card:hover .related-card-img img {
    transform: scale(1.04);
}

.related-card-content {
    padding: 20px 22px;
    display: flex;
    flex-direction: column;
}

.card-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-primary);
    background: var(--color-primary-soft);
    border-radius: 20px;
    padding: 3px 10px;
    margin-bottom: 10px;
    align-self: flex-start;
}

.related-card-content h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--color-text);
    line-height: 1.4;
}

.related-card-content p {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.6;
    margin-bottom: 0;
}

.cta-mid {
    padding: 48px 0 64px;
    background: var(--color-bg);
}

.cta-box {
    background: linear-gradient(135deg, var(--color-dark), #155A61);
    border-radius: var(--radius-lg);
    padding: 48px 56px;
    text-align: center;
    color: #FFFFFF;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.cta-box::after {
    content: '';
    position: absolute;
    top: -40px;
    right: -40px;
    width: 160px;
    height: 160px;
    background: rgba(231, 111, 81, 0.18);
    border-radius: 50%;
    pointer-events: none;
}

.cta-box h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 12px;
    color: #FFFFFF;
}

.cta-box p {
    font-size: 16px;
    opacity: 0.85;
    margin-bottom: 24px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-box .btn-primary-custom {
    font-size: 17px;
    padding: 14px 40px;
}

.footer-main {
    background: var(--color-dark);
    color: rgba(255, 255, 255, 0.8);
    padding-top: 56px;
}

.footer-top {
    padding-bottom: 40px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 22px;
    font-weight: 700;
    color: #FFFFFF;
    margin-bottom: 16px;
}

.footer-desc {
    font-size: 14px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.65);
    max-width: 360px;
    margin-bottom: 0;
}

.footer-title {
    font-size: 16px;
    font-weight: 600;
    color: #FFFFFF;
    margin-bottom: 16px;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 10px;
    font-size: 14px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-secondary);
}

.footer-links i {
    color: rgba(255, 255, 255, 0.5);
    width: 18px;
    text-align: center;
    margin-right: 6px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    padding: 20px 0;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.45);
}

.footer-bottom .container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
}

@media (max-width: 991.98px) {
    .navbar-custom {
        min-height: 0;
    }
    .navbar-custom .navbar-nav {
        align-items: flex-start;
        gap: 0;
        padding: 12px 0;
    }
    .navbar-custom .navbar-nav .nav-link {
        padding: 12px 0;
        border-bottom: none;
        border-radius: var(--radius-sm);
        width: 100%;
    }
    .navbar-custom .navbar-nav .nav-link.active {
        border-bottom: none;
        background: var(--color-primary-soft);
        color: var(--color-primary);
        padding-left: 12px;
    }
    .article-hero {
        padding: 36px 0 80px;
    }
    .article-hero-title {
        font-size: 30px;
    }
    .article-content-wrap {
        padding: 32px 28px;
    }
    .related-card {
        flex-direction: column;
    }
    .related-card-img {
        width: 100%;
        height: 160px;
    }
    .cta-box {
        padding: 36px 28px;
    }
}

@media (max-width: 767.98px) {
    .article-hero {
        padding: 28px 0 72px;
    }
    .article-hero-title {
        font-size: 26px;
    }
    .breadcrumb-custom {
        font-size: 13px;
        gap: 6px;
    }
    .article-content-wrap {
        padding: 24px 20px;
        margin-top: -28px;
        border-radius: var(--radius-md);
    }
    .article-footer {
        flex-direction: column;
        align-items: stretch;
    }
    .article-footer .btn {
        width: 100%;
        text-align: center;
    }
    .related-title {
        font-size: 24px;
    }
    .cta-box h2 {
        font-size: 24px;
    }
    .cta-box p {
        font-size: 15px;
    }
    .footer-top {
        padding-bottom: 24px;
    }
    .footer-bottom .container {
        flex-direction: column;
        text-align: center;
    }
    .footer-brand {
        font-size: 20px;
    }
}