/* ============================================
   青玄创意 — Light Futuristic Theme
   ============================================ */
:root {
    --bg: #fafafa;
    --bg-dark: #0c0c0c;
    --surface: #f0f0f0;
    --surface-dark: #161616;
    --border: #e2e2e2;
    --border-dark: rgba(255,255,255,.1);
    --text: #1a1a1a;
    --text-2: #666;
    --text-white: #f0f0f0;
    --text-muted: #888;
    --accent: #10b981;
    --accent-2: #34d399;
    --gradient: linear-gradient(135deg, #10b981, #06b6d4);
    --font-en: 'Inter', -apple-system, sans-serif;
    --font-cn: 'Noto Sans SC', sans-serif;
    --ease: cubic-bezier(.22,1,.36,1);
    --radius: 12px;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{font-family:var(--font-cn);background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- noise ---------- */
.noise{
    position:fixed;inset:0;z-index:9999;pointer-events:none;
    opacity:.035;
    background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-size:256px;
}

/* ---------- header ---------- */
.header{
    position:fixed;top:0;left:0;width:100%;z-index:100;
    padding:16px 0;
    transition:all .4s var(--ease);
}
.header.scrolled{
    background:rgba(250,250,250,.88);
    backdrop-filter:blur(16px);
    border-bottom:1px solid var(--border);
    padding:10px 0;
}
.header-inner{
    max-width:1200px;margin:0 auto;padding:0 24px;
    display:flex;align-items:center;justify-content:space-between;
}
.logo{display:flex;align-items:center;gap:10px}
.logo-mark{
    width:34px;height:34px;
    border-radius:8px;
    background:var(--bg-dark);
    color:#fff;
    display:inline-flex;align-items:center;justify-content:center;
    font-family:var(--font-en);font-weight:800;font-size:.75rem;
    letter-spacing:-.02em;
}
.logo-name{font-family:var(--font-en);font-weight:700;font-size:1rem;letter-spacing:.06em}

.nav{display:flex;gap:32px}
.nav-link{
    font-family:var(--font-en);font-size:.82rem;font-weight:500;
    color:var(--text-2);
    transition:color .3s;
    position:relative;
}
.nav-link::after{
    content:'';position:absolute;bottom:-4px;left:0;
    width:0;height:2px;
    background:var(--accent);
    transition:width .3s var(--ease);
}
.nav-link:hover,.nav-link.active{color:var(--text)}
.nav-link:hover::after,.nav-link.active::after{width:100%}

.header-right{display:flex;align-items:center;gap:16px}

.menu-toggle{
    display:none;background:none;border:none;cursor:pointer;
    flex-direction:column;gap:6px;padding:4px;
}
.menu-toggle span{
    display:block;width:22px;height:2px;background:var(--text);
    transition:all .3s var(--ease);transform-origin:center;
}
.menu-toggle.active span:nth-child(1){transform:translateY(4px) rotate(45deg)}
.menu-toggle.active span:nth-child(2){transform:translateY(-4px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
    display:inline-flex;align-items:center;gap:6px;
    padding:12px 24px;border-radius:8px;
    font-size:.85rem;font-weight:600;
    font-family:var(--font-cn);
    transition:all .3s var(--ease);
    border:none;cursor:pointer;
}
.btn-sm{padding:8px 18px;font-size:.8rem}
.btn-primary{background:var(--bg-dark);color:#fff}
.btn-primary:hover{background:#333;transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.12)}
.btn-outline{border:1px solid var(--border);color:var(--text);background:transparent}
.btn-outline:hover{border-color:var(--text);background:rgba(0,0,0,.03)}
.btn-full{width:100%;justify-content:center}

/* dark section buttons */
.section-dark .btn-primary{background:var(--accent);color:#000}
.section-dark .btn-primary:hover{background:var(--accent-2);box-shadow:0 8px 24px rgba(16,185,129,.25)}

/* ---------- hero ---------- */
.hero{
    min-height:100vh;display:flex;flex-direction:column;
    justify-content:center;position:relative;
    overflow:hidden;padding:120px 24px 0;
}
.hero-orb{
    position:absolute;
    width:600px;height:600px;
    border-radius:50%;
    background:radial-gradient(circle, rgba(16,185,129,.15) 0%, rgba(6,182,212,.08) 40%, transparent 70%);
    top:10%;right:-10%;
    animation:float 8s ease-in-out infinite;
    pointer-events:none;
}
@keyframes float{0%,100%{transform:translate(0,0)}50%{transform:translate(-30px,20px)}}

.hero-grid-lines{
    position:absolute;inset:0;
    background-image:
        linear-gradient(rgba(0,0,0,.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,0,0,.03) 1px, transparent 1px);
    background-size:80px 80px;
    pointer-events:none;
}

.hero-content{
    max-width:1200px;margin:0 auto;width:100%;
    position:relative;z-index:1;
}
.hero-eyebrow{
    font-family:var(--font-en);font-size:.72rem;
    letter-spacing:.2em;color:var(--text-2);
    margin-bottom:24px;font-weight:500;
}
.hero-title{
    font-family:var(--font-en);
    font-size:clamp(3.2rem,7vw,6.5rem);
    font-weight:900;line-height:1;
    letter-spacing:-.04em;
    margin-bottom:28px;
}
.hero-title-outline{
    -webkit-text-stroke:2px var(--text);
    color:transparent;
}
.blink{animation:blink 1s step-end infinite;color:var(--accent)}
@keyframes blink{0%,100%{opacity:1}50%{opacity:0}}

.hero-sub{
    font-size:1rem;color:var(--text-2);
    line-height:1.8;max-width:480px;
    margin-bottom:36px;
}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}

/* ticker */
.hero-ticker{
    position:absolute;bottom:0;left:0;width:100%;
    border-top:1px solid var(--border);
    padding:14px 0;overflow:hidden;
}
.ticker-track{
    display:flex;gap:32px;white-space:nowrap;
    animation:ticker 20s linear infinite;
    font-family:var(--font-en);font-size:.8rem;
    color:var(--text-2);font-weight:500;
    letter-spacing:.06em;
}
@keyframes ticker{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}

/* ---------- stats bar ---------- */
.stats-bar{
    border-bottom:1px solid var(--border);
    padding:40px 0;
}
.stats-inner{
    max-width:1200px;margin:0 auto;padding:0 24px;
    display:flex;align-items:center;justify-content:center;
    gap:48px;flex-wrap:wrap;
}
.stat-item{text-align:center}
.stat-val{
    font-family:var(--font-en);font-size:2.6rem;font-weight:800;
    letter-spacing:-.03em;
}
.stat-plus{font-family:var(--font-en);font-size:1.2rem;font-weight:700;color:var(--accent)}
.stat-label{display:block;font-size:.8rem;color:var(--text-2);margin-top:2px}
.stat-divider{width:1px;height:40px;background:var(--border)}

/* ---------- sections ---------- */
.section{padding:100px 0}
.section-dark{background:var(--bg-dark);color:var(--text-white)}

.section-head{margin-bottom:48px}

.heading-lg{
    font-size:clamp(2rem,4vw,3.2rem);
    font-weight:800;letter-spacing:-.03em;
    line-height:1.2;
}
.text-accent{color:var(--accent)}
.text-white{color:#fff}
.text-muted{color:var(--text-muted)}
.text-body{font-size:1rem;color:var(--text-2);line-height:1.9;margin-bottom:16px}

.tag-pill{
    display:inline-block;
    padding:6px 14px;border-radius:100px;
    font-size:.75rem;font-weight:600;
    background:rgba(16,185,129,.1);
    color:var(--accent);
    margin-bottom:16px;
    font-family:var(--font-en);
    letter-spacing:.04em;
}
.tag-dark{background:rgba(16,185,129,.15)}

/* ---------- about ---------- */
.about-grid{
    display:grid;grid-template-columns:1fr 1fr;
    gap:64px;align-items:start;
}
.about-badges{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}
.badge{
    padding:6px 14px;
    border:1px solid var(--border);
    border-radius:100px;
    font-size:.78rem;color:var(--text-2);
    transition:all .3s var(--ease);
}
.badge:hover{border-color:var(--accent);color:var(--accent)}

/* ---------- bento services ---------- */
.bento{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:16px;
}
.bento-card{
    background:var(--surface-dark);
    border:1px solid var(--border-dark);
    border-radius:var(--radius);
    padding:36px 28px;
    transition:all .4s var(--ease);
    position:relative;
    overflow:hidden;
}
.bento-card::before{
    content:'';position:absolute;top:0;left:0;right:0;
    height:2px;background:var(--gradient);
    transform:scaleX(0);transform-origin:left;
    transition:transform .4s var(--ease);
}
.bento-card:hover::before{transform:scaleX(1)}
.bento-card:hover{
    border-color:rgba(16,185,129,.3);
    transform:translateY(-4px);
    box-shadow:0 16px 48px rgba(16,185,129,.08);
}
.bento-lg{grid-row:span 2;display:flex;flex-direction:column;justify-content:center}
.bento-wide{grid-column:span 2}
.bento-num{
    font-family:var(--font-en);font-size:.7rem;font-weight:600;
    color:var(--accent);letter-spacing:.1em;
    margin-bottom:16px;display:block;
}
.bento-card h3{
    font-size:1.2rem;font-weight:700;margin-bottom:10px;
    color:#fff;
}
.bento-card p{font-size:.9rem;color:rgba(255,255,255,.5);line-height:1.7}

/* ---------- works horizontal scroll ---------- */
.works-head{
    display:flex;align-items:flex-end;justify-content:space-between;
    margin-bottom:32px;
}
.works-nav{display:flex;gap:8px}
.scroll-btn{
    width:44px;height:44px;border-radius:50%;
    border:1px solid var(--border);
    background:transparent;
    font-size:1rem;cursor:pointer;
    transition:all .3s var(--ease);
    color:var(--text);
}
.scroll-btn:hover{background:var(--bg-dark);color:#fff;border-color:var(--bg-dark)}

.works-scroll{
    overflow-x:auto;overflow-y:hidden;
    scrollbar-width:none;
    -ms-overflow-style:none;
    padding:0 24px 24px;
}
.works-scroll::-webkit-scrollbar{display:none}
.works-track{
    display:flex;gap:20px;
    padding-bottom:8px;
}
.work-card{
    flex:0 0 360px;
    border-radius:var(--radius);
    overflow:hidden;
    border:1px solid var(--border);
    transition:all .4s var(--ease);
    cursor:pointer;
    background:#fff;
}
.work-card:hover{
    transform:translateY(-6px);
    box-shadow:0 20px 60px rgba(0,0,0,.08);
}
.work-visual{
    height:240px;
    transition:transform .6s var(--ease);
}
.work-card:hover .work-visual{transform:scale(1.04)}
.work-info{padding:24px}
.work-tag{
    font-family:var(--font-en);font-size:.68rem;font-weight:600;
    color:var(--accent);letter-spacing:.08em;
    text-transform:uppercase;margin-bottom:6px;display:block;
}
.work-info h3{font-size:1.05rem;font-weight:700;margin-bottom:4px}
.work-info p{font-size:.85rem;color:var(--text-2)}

/* ---------- contact ---------- */
.contact-layout{
    display:grid;grid-template-columns:1fr 1fr;gap:64px;
}
.contact-details{margin-top:32px}
.contact-row{
    display:flex;gap:16px;
    padding:14px 0;
    border-bottom:1px solid var(--border-dark);
}
.contact-key{
    font-family:var(--font-en);font-size:.72rem;
    font-weight:600;color:var(--accent);
    letter-spacing:.1em;text-transform:uppercase;
    width:48px;flex-shrink:0;
    padding-top:2px;
}
.contact-val{font-size:.92rem;color:rgba(255,255,255,.7)}

.contact-form{display:flex;flex-direction:column;gap:14px}
.form-duo{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.contact-form input,
.contact-form select,
.contact-form textarea{
    width:100%;padding:14px 16px;
    background:var(--surface-dark);
    border:1px solid var(--border-dark);
    border-radius:8px;
    color:var(--text-white);
    font-size:.88rem;font-family:var(--font-cn);
    transition:border-color .3s;outline:none;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus{border-color:var(--accent)}
.contact-form select{
    cursor:pointer;appearance:none;
    background-image:url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23888' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat:no-repeat;background-position:right 14px center;
}
.contact-form textarea{resize:vertical;min-height:90px}
.contact-form option{background:var(--surface-dark);color:var(--text-white)}

/* ---------- footer ---------- */
.footer{padding:40px 0 28px;border-top:1px solid var(--border)}
.footer-inner{
    display:flex;justify-content:space-between;align-items:center;
    margin-bottom:28px;
}
.footer-left{display:flex;flex-direction:column;gap:6px}
.footer-left p{font-size:.82rem;color:var(--text-2)}
.footer-links{display:flex;gap:24px}
.footer-links a{font-size:.82rem;color:var(--text-2);transition:color .3s}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{
    display:flex;justify-content:space-between;
    padding-top:20px;border-top:1px solid var(--border);
}
.footer-bottom p{font-size:.78rem;color:var(--text-2)}

/* ---------- back to top ---------- */
.back-to-top{
    position:fixed;bottom:28px;right:28px;
    width:42px;height:42px;border-radius:50%;
    background:#fff;border:1px solid var(--border);
    color:var(--text);font-size:1rem;
    cursor:pointer;
    opacity:0;pointer-events:none;
    transition:all .3s var(--ease);
    z-index:90;
    box-shadow:0 4px 12px rgba(0,0,0,.06);
}
.back-to-top.visible{opacity:1;pointer-events:auto}
.back-to-top:hover{
    background:var(--bg-dark);color:#fff;
    border-color:var(--bg-dark);
    transform:translateY(-3px);
}

/* ---------- animations ---------- */
.fade-up{opacity:0;transform:translateY(28px);transition:all .7s var(--ease)}
.fade-up.visible{opacity:1;transform:translateY(0)}

/* ---------- responsive ---------- */
@media(max-width:900px){
    .about-grid{grid-template-columns:1fr}
    .bento{grid-template-columns:1fr 1fr}
    .bento-lg{grid-row:span 1}
    .bento-wide{grid-column:span 1}
    .contact-layout{grid-template-columns:1fr}
    .work-card{flex:0 0 300px}
}
@media(max-width:640px){
    .section{padding:72px 0}
    .hero{padding:100px 16px 0}
    .hero-title{font-size:2.8rem}
    .nav{
        position:fixed;top:0;right:-100%;
        width:75%;height:100vh;
        background:var(--bg);
        flex-direction:column;justify-content:center;
        gap:24px;padding:40px;
        transition:right .4s var(--ease);
        border-left:1px solid var(--border);
        z-index:100;
    }
    .nav.open{right:0}
    .menu-toggle{display:flex}
    .header-right .btn-sm{display:none}
    .bento{grid-template-columns:1fr}
    .stats-inner{gap:24px}
    .stat-divider{display:none}
    .stats-inner{flex-direction:row;flex-wrap:wrap;justify-content:space-around}
    .stat-val{font-size:2rem}
    .form-duo{grid-template-columns:1fr}
    .footer-inner{flex-direction:column;gap:20px;align-items:flex-start}
    .footer-bottom{flex-direction:column;gap:6px}
    .works-nav{display:none}
    .work-card{flex:0 0 280px}
}