/* ============================================
   丹阳蓝星清洗 — 中英文双语统一站点
   配色方案 100% 复刻 lanxingqingxi.com
   Primary: #0066CC | Accent: #00A8E8
   Hero: #1A2436→#1A5A8A 深海蓝渐变
   Background: #FCFBF9 暖白
   ============================================ */

:root {
    --primary: #0066CC;
    --primary-dark: #004999;
    --primary-light: #3385D6;
    --primary-50: #E8EEF6;
    --accent: #00A8E8;
    --accent-dark: #0086B8;
    --white: #FCFBF9;
    --gray-50: #F5F3F0;
    --gray-100: #EFECE8;
    --gray-200: #E4E0DA;
    --gray-300: #D4CFC8;
    --gray-400: #A0998F;
    --gray-500: #6B6560;
    --gray-600: #4D4845;
    --gray-700: #383532;
    --gray-800: #252220;
    --gray-900: #161412;
    --success: #10B981;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 1px 3px rgba(0,0,0,0.1),0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07),0 2px 4px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1),0 4px 6px rgba(0,0,0,0.05);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.1),0 10px 10px rgba(0,0,0,0.04);
    --radius-sm: 6px;
    --radius: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
    --max-width: 1200px;
    --header-h: 72px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px;font-size:16px}
body{
    font-family:'Noto Sans SC','Inter',-apple-system,BlinkMacSystemFont,"Microsoft YaHei","PingFang SC",sans-serif;
    color:var(--gray-800);
    background:linear-gradient(180deg,#FCFBF9 0%,#F8F6F3 30%,#F5F3F0 60%,#F8F6F3 100%);
    background-attachment:fixed;
    line-height:1.7;
    overflow-x:hidden;
    -webkit-font-smoothing:antialiased;
    padding-top:var(--header-h);
}
h1,h2,h3,h4{font-weight:700;line-height:1.3;color:var(--gray-900)}
h1{font-size:2.2rem;font-size:clamp(2.2rem,4.5vw,3.5rem)}
h2{font-size:1.8rem;font-size:clamp(1.8rem,3.5vw,2.5rem)}
h3{font-size:1.1rem;font-size:clamp(1.1rem,2vw,1.5rem)}
a{color:var(--primary);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--primary-dark)}
.container{max-width:var(--max-width);margin:0 auto}

/* ====== Header Bar ====== */
.topbar{
    position:fixed;top:0;left:0;right:0;z-index:1000;
    background:#FCFBF9;background:rgba(252,251,249,0.92);backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);border-bottom:1px solid rgba(0,0,0,0.06);
    transition:var(--transition);
}
.topbar-inner{
    max-width:var(--max-width);margin:0 auto;padding:0 1.5rem;
    display:flex;align-items:center;justify-content:space-between;height:var(--header-h);
}
.topbar .logo{display:flex;flex-direction:column;align-items:center;gap:0;font-size:1.15rem;font-weight:800;color:var(--gray-900);text-decoration:none}
.topbar .logo span{font-size:1.6rem}
.topbar .logo small{font-size:0.68rem;color:var(--gray-500);font-weight:400;display:block;line-height:1.2}

.main-nav{display:flex;align-items:center;gap:1.8rem;list-style:none}
.main-nav a{
    color:var(--gray-600);font-weight:500;font-size:0.9rem;
    position:relative;padding:0.2rem 0;
}
.main-nav a::after{
    content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;
    background:var(--primary);transition:width 0.3s ease;
}
.main-nav a:hover::after,.main-nav a.active::after{width:100%}
.main-nav a:hover,.main-nav a.active{color:var(--primary)}
.main-nav .nav-cta{
    background:var(--primary);color:#fff!important;padding:0.55rem 1.4rem!important;
    border-radius:var(--radius-full);font-weight:600!important;
}
.main-nav .nav-cta:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 4px 12px rgba(0,102,204,0.3)}
.main-nav .nav-cta::after{display:none!important}

.lang-switch{display:flex;gap:2px;background:var(--gray-50);border-radius:var(--radius-full);padding:3px}
.lang-switch a{
    padding:6px 16px;border-radius:var(--radius-full);text-decoration:none;
    font-size:0.85rem;font-weight:600;transition:var(--transition);color:var(--gray-500);
}
.lang-switch a.active{background:var(--primary);color:#fff}
.lang-switch a:hover:not(.active){color:var(--gray-700)}

/* ====== Hero ====== */
.hero{
    position:relative;min-height:85vh;min-height:85dvh;display:flex;align-items:center;justify-content:center;
    background:linear-gradient(135deg,#1A2436 0%,#243550 35%,#1E4060 65%,#1A5A8A 100%);
    overflow:hidden;padding-top:var(--header-h);
}
.hero::before{
    content:'';position:absolute;inset:0;
    background-image:
        radial-gradient(circle at 20% 50%,rgba(0,168,232,0.15) 0%,transparent 50%),
        radial-gradient(circle at 80% 20%,rgba(255,255,255,0.05) 0%,transparent 50%),
        radial-gradient(circle at 50% 80%,rgba(0,102,204,0.2) 0%,transparent 50%);
}
.hero::after{
    content:'';position:absolute;inset:0;
    background-image:linear-gradient(rgba(255,255,255,0.03) 1px,transparent 1px),
                      linear-gradient(90deg,rgba(255,255,255,0.03) 1px,transparent 1px);
    background-size:60px 60px;
    mask-image:radial-gradient(ellipse at center,black 30%,transparent 70%);
    -webkit-mask-image:radial-gradient(ellipse at center,black 30%,transparent 70%);
}
.hero-content{position:relative;z-index:2;text-align:center;padding:2rem;max-width:900px}
.hero-badge{
    display:inline-flex;align-items:center;gap:0.5rem;
    background:rgba(255,255,255,0.1);backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    border:1px solid rgba(255,255,255,0.2);padding:0.5rem 1.5rem;
    border-radius:var(--radius-full);color:rgba(255,255,255,0.9);
    font-size:0.9rem;font-weight:500;margin-bottom:2rem;
}
.hero-badge .dot{width:8px;height:8px;background:var(--success);border-radius:50%;display:inline-block;margin-right:6px}
.hero h1{color:var(--white);margin-bottom:1.2rem}
.hero p{font-size:1.1rem;color:rgba(255,255,255,0.75);max-width:650px;margin:0 auto 2.5rem}
.hero .btns{display:flex;align-items:center;justify-content:center;gap:1rem;flex-wrap:wrap}
.btn{
    display:inline-flex;align-items:center;gap:0.5rem;padding:0.85rem 2rem;
    border-radius:var(--radius-full);font-weight:600;font-size:1rem;transition:var(--transition);
    cursor:pointer;border:none;text-decoration:none;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 4px 20px rgba(0,168,232,0.35)}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 8px 30px rgba(0,168,232,0.45);color:#fff}
.btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,0.3)}
.btn-outline:hover{background:rgba(255,255,255,0.1);border-color:rgba(255,255,255,0.5);transform:translateY(-2px)}
.hero-stats{display:flex;justify-content:center;gap:3rem;margin-top:3.5rem}
.hero-stat{text-align:center}
.hero-stat .number{font-size:2.2rem;font-weight:800;color:#fff}
.hero-stat .label{font-size:0.85rem;color:rgba(255,255,255,0.6);font-weight:500}

/* ====== Section ====== */
.section{padding:5rem 2rem}
.section-alt{background:linear-gradient(180deg,#EBF2FA 0%,#F5F3F0 100%)}
.section-inner{max-width:var(--max-width);margin:0 auto}
.section h2{text-align:center;margin-bottom:0.8rem;position:relative}
.section h2::after{content:'';display:block;width:60px;height:3px;background:var(--accent);margin:12px auto 0;border-radius:2px}
.section-label{display:inline-block;padding:0.35rem 1.2rem;background:var(--primary-50);color:var(--primary);font-size:0.85rem;font-weight:600;border-radius:var(--radius-full);letter-spacing:0.05em;margin-bottom:0.8rem}
.section .subtitle{text-align:center;color:var(--gray-500);max-width:600px;margin:0 auto 3.5rem;font-size:1.05rem}

/* ====== Card Grid ====== */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1.2rem}
.card{
    background:var(--white);border-radius:var(--radius-lg);padding:1.8rem;
    border:1px solid var(--gray-200);transition:var(--transition);
    text-decoration:none;color:inherit;position:relative;overflow:hidden;
}
.card::before{
    content:'';position:absolute;top:0;left:0;right:0;height:3px;
    background:linear-gradient(90deg,var(--primary),var(--accent));
    transform:scaleX(0);transition:transform 0.3s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-xl);border-color:var(--primary-light)}
.card:hover::before{transform:scaleX(1)}
.card .icon{font-size:2rem;margin-bottom:0.8rem}
.card h3{font-size:1.1rem;margin-bottom:0.5rem;color:var(--gray-900)}
.card p{color:var(--gray-500);font-size:0.88rem;line-height:1.6}
.card .tag{display:inline-block;padding:3px 10px;background:var(--primary-50);border-radius:var(--radius-full);font-size:0.75rem;color:var(--primary);margin-top:12px;font-weight:600}

/* ====== Tech Cards ====== */
.tech-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:1.5rem}
.tech-card{
    background:var(--white);border-radius:var(--radius-lg);padding:1.8rem;
    border:1px solid var(--gray-200);display:flex;gap:1.2rem;align-items:flex-start;
    transition:var(--transition);
}
.tech-card:hover{box-shadow:var(--shadow-lg);border-color:var(--primary-light)}
.tech-card .num{font-size:2.5rem;font-weight:900;color:var(--primary-50);line-height:1;min-width:44px}
.tech-card h3{font-size:1.05rem;color:var(--gray-900);margin-bottom:6px}
.tech-card p{font-size:0.9rem;color:var(--gray-500)}

/* ====== Case Grid ====== */
.case-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem}
.case-card{
    background:var(--white);border-radius:var(--radius-lg);overflow:hidden;
    border:1px solid var(--gray-200);transition:var(--transition);
}
.case-card:hover{box-shadow:var(--shadow-xl)}
.case-card .img{height:180px;background:linear-gradient(135deg,var(--primary-50),#DBEAFE);display:flex;align-items:center;justify-content:center;font-size:3.5rem}
.case-card .info{padding:1.5rem}
.case-card h3{font-size:1rem;margin-bottom:4px}
.case-card .detail{font-size:0.85rem;color:var(--gray-500)}

/* ====== Stat Grid ====== */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;margin:2rem 0}
.stat-item{text-align:center;padding:2rem 1rem;background:linear-gradient(135deg,#EBF2FA,#fff);border-radius:var(--radius-lg);border:1px solid var(--primary-50)}
.stat-item .num{font-size:2.2rem;font-weight:900;color:var(--primary)}
.stat-item .label{font-size:0.85rem;color:var(--gray-500);margin-top:6px}

/* ====== Client Grid ====== */
.client-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:1rem}
.client-item{
    background:var(--white);border-radius:var(--radius);padding:1.5rem 1rem;text-align:center;
    border:1px solid var(--gray-200);font-weight:600;color:var(--gray-500);
    transition:var(--transition);
}
.client-item:hover{box-shadow:var(--shadow-md);color:var(--primary);border-color:var(--primary-light)}

/* ====== Cert Grid ====== */
.cert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:1.5rem}
.cert-card{
    text-align:center;padding:2rem 1.5rem;background:var(--white);border-radius:var(--radius-lg);
    border:1px solid var(--gray-200);transition:var(--transition);
}
.cert-card:hover{box-shadow:var(--shadow-lg)}
.cert-card .icon{font-size:2.5rem;margin-bottom:12px}
.cert-card h3{font-size:1rem;color:var(--gray-900)}

/* ====== Contact ====== */
.contact-wrap{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:start}
.contact-info h3{margin-bottom:1.5rem;font-size:1.3rem}
.contact-info .item{display:flex;gap:0.8rem;align-items:flex-start;margin-bottom:1.2rem}
.contact-info .item .icon{font-size:1.3rem;min-width:28px}
.contact-info .item strong{display:block;font-size:0.85rem;color:var(--gray-500)}
.contact-info .item p{color:var(--gray-700)}
.contact-form input,.contact-form textarea{
    width:100%;padding:0.85rem 1.2rem;border:1.5px solid var(--gray-200);border-radius:var(--radius);
    font-size:1rem;margin-bottom:1rem;font-family:inherit;transition:border 0.2s;background:var(--white);
}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--primary)}
.contact-form textarea{height:130px;resize:vertical}
.contact-form button{
    padding:0.85rem 2.5rem;background:var(--accent);color:#fff;border:none;
    border-radius:var(--radius-full);font-size:1rem;font-weight:600;cursor:pointer;
    transition:var(--transition);box-shadow:0 4px 20px rgba(0,168,232,0.35);
}
.contact-form button:hover{background:var(--accent-dark);transform:translateY(-2px)}



@keyframes pulse-ring{
    0%,100%{box-shadow:0 0 0 0 rgba(0,102,204,0.5)}
    50%{box-shadow:0 0 0 16px rgba(0,102,204,0)}
}


















/* ====== Page Header ====== */
.page-header{
    background:linear-gradient(135deg,#1A2436 0%,#243550 35%,#1E4060 65%,#1A5A8A 100%);
    color:#fff;padding:5rem 2rem 3.5rem;text-align:center;position:relative;
}
.page-header h1{color:var(--white);font-size:2.2rem;margin-bottom:0.5rem}
.page-header p{opacity:0.8;font-size:1.05rem}

/* ====== About Content ====== */
.about-content{max-width:850px;margin:0 auto}
.about-content p{margin-bottom:1.2rem;color:var(--gray-600);font-size:1.02rem;line-height:1.8}


/* ====== CTA Section ====== */
.cta-section{
    background:linear-gradient(135deg,#1A2436 0%,#243550 35%,#1E4060 65%,#1A5A8A 100%);
    color:#fff;text-align:center;padding:4rem 2rem;
}
.cta-section h2{color:#fff}
.cta-section h2::after{background:rgba(255,255,255,0.5)}
.cta-section p{color:rgba(255,255,255,0.85);max-width:600px;margin:0 auto 2rem;font-size:1.05rem}

/* ====== Footer ====== */
.footer{
    background:#1E252E;color:rgba(255,255,255,0.7);padding:4rem 2rem 2rem;
}
.footer-grid{
    max-width:var(--max-width);margin:0 auto;
    display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:2.5rem;margin-bottom:2.5rem;
}
.footer h4{color:#fff;margin-bottom:1rem;font-size:1rem}
.footer p,.footer a{font-size:0.9rem;color:rgba(255,255,255,0.6);line-height:2}
.footer a{text-decoration:none;display:block}
.footer a:hover{color:var(--accent)}
.footer-bottom{
    max-width:var(--max-width);margin:0 auto;padding-top:2rem;
    border-top:1px solid rgba(255,255,255,0.1);text-align:center;
    font-size:0.85rem;color:rgba(255,255,255,0.5);
    display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:0.25rem 0.5rem;
}

/* ====== Hamburger Menu ====== */
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;z-index:1001;padding:4px;background:none;border:none}
.hamburger span{display:block;width:26px;height:2.5px;background:var(--gray-800);border-radius:2px;transition:var(--transition)}
.hamburger.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
.mobile-nav{display:none;position:fixed;top:56px;left:0;right:0;bottom:0;background:var(--white);z-index:999;padding:1.5rem 1rem;overflow-y:auto}
@media(max-width:768px){
    .mobile-nav{top:56px}
}
.mobile-nav.open{display:block}
.mobile-nav a{display:block;padding:1rem 0;font-size:1.1rem;font-weight:600;color:var(--gray-700);border-bottom:1px solid var(--gray-200);text-decoration:none}
.mobile-nav a:hover{color:var(--primary)}
.mobile-nav .nav-cta{margin-top:1rem;text-align:center;background:var(--primary);color:#fff!important;border-radius:var(--radius-full);border:none;padding:0.85rem!important}

/* ====== Hero Divider ====== */
.hero-divider{width:1px;background:rgba(255,255,255,0.2);align-self:stretch}

/* ====== Responsive ====== */
@media(max-width:1024px){
    .footer-grid{grid-template-columns:1fr 1fr}
    .stat-grid{grid-template-columns:1fr 1fr}
    .contact-wrap{grid-template-columns:1fr}
    .hero-stats{gap:2rem}
}
@media(max-width:768px){
    .topbar{background:#FCFBF9!important;height:56px}
    .topbar-inner{padding:0 0.8rem;height:56px}
    .topbar .logo img{height:32px!important}
    .topbar .logo>div{font-size:0.75rem!important}
    .topbar .logo small{font-size:0.6rem!important;line-height:1.1}
    .main-nav{display:none}
    .hamburger{display:flex;margin-left:0}
    .hamburger span{width:22px;height:2px}
    .lang-switch a{padding:5px 10px;font-size:0.78rem}
    .lang-switch{gap:1px;padding:2px}
    body{padding-top:56px}
    .hero{min-height:70vh;min-height:70dvh;padding:3rem 1rem 2rem}
    .hero h1{font-size:1.7rem}
    .hero p{font-size:1rem}
    .section{padding:3rem 1rem}
    .section h2{font-size:1.6rem}
    .tech-grid{grid-template-columns:1fr}
    .card-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}
    .footer-grid{grid-template-columns:1fr;gap:1.8rem}
    .stat-grid{grid-template-columns:1fr 1fr}
    .hero-stats{flex-direction:column;gap:1rem;margin-top:2rem}
    .footer-bottom{font-size:0.8rem}
    html{font-size:15px}
}
@media(max-width:480px){
    html{font-size:14px}
    .hero h1{font-size:1.4rem}
    .stat-grid{grid-template-columns:1fr}
    .card-grid{grid-template-columns:1fr}
    .lang-switch a{padding:5px 10px;font-size:0.8rem}
    .hero-divider{display:none}
    .hero-stats{gap:1rem}
    
    
    
    
    .contact-form input,.contact-form textarea{font-size:16px}
    .footer-bottom{font-size:0.75rem;gap:0.15rem 0.4rem;padding:1.5rem 0.5rem 1rem}
}

/* ====== Android / Mobile Touch Optimization ====== */
a,button,.btn,.
@media(max-width:768px){
    .main-nav a,.mobile-nav a,.lang-switch a,.btn,
    .lang-switch a{padding:8px 16px}
    .hero-badge{font-size:0.8rem;padding:0.4rem 1rem}
    body{-webkit-text-size-adjust:100%}
}


/* ====== Android WeChat Compatibility ====== */
@supports not (backdrop-filter: blur(1px)){
    .topbar{background:#FCFBF9}
    .hero-badge{background:rgba(30,36,46,0.5)}
}
@media(max-width:768px){
    .topbar{background:#FCFBF9}
    .hero-badge{background:rgba(30,36,46,0.5)}
}