/* ===== RESET & BASE ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
@media(max-width:768px){html{font-size:14px}}

:root{
    --bg:#0a0e1a;
    --bg2:#0f1528;
    --bg3:#151d35;
    --text:#e4e8f0;
    --text2:#8b95b5;
    --text3:#5a6488;
    --cyan:#00e5ff;
    --blue:#4d7cff;
    --purple:#8b5cf6;
    --green:#34d399;
    --pink:#f472b6;
    --grad1:linear-gradient(135deg,#00e5ff,#4d7cff);
    --grad2:linear-gradient(135deg,#8b5cf6,#f472b6);
    --grad3:linear-gradient(135deg,#00e5ff,#34d399);
    --radius:12px;
    --radius-lg:20px;
    --shadow:0 4px 30px rgba(0,229,255,.08);
    --glow-cyan:0 0 20px rgba(0,229,255,.15),0 0 60px rgba(0,229,255,.05);
    --glow-purple:0 0 20px rgba(139,92,246,.15),0 0 60px rgba(139,92,246,.05);
    --font-mono:'SF Mono','Fira Code','Cascadia Code',monospace;
}
body{
    font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;
    background:var(--bg);
    color:var(--text);
    line-height:1.7;
    overflow-x:hidden;
    -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
@media(max-width:768px){.container{padding:0 16px}}
.section{padding:100px 0;position:relative}
@media(max-width:768px){.section{padding:60px 0}}

/* ===== SECTION HEADERS ===== */
.section-label{
    display:inline-block;
    font-family:var(--font-mono);
    font-size:.7rem;
    letter-spacing:3px;
    color:var(--cyan);
    background:rgba(0,229,255,.08);
    border:1px solid rgba(0,229,255,.15);
    padding:4px 14px;
    border-radius:20px;
    margin-bottom:12px;
    text-transform:uppercase;
}
.section-title{
    font-size:clamp(2rem,5vw,3rem);
    font-weight:800;
    line-height:1.15;
    margin-bottom:12px;
}
.section-subtitle{
    color:var(--text2);
    font-size:1.1rem;
    max-width:600px;
    margin-bottom:56px;
}
@media(max-width:768px){.section-subtitle{margin-bottom:36px}}

/* ===== HEADER ===== */
.header{
    position:fixed;top:0;left:0;right:0;z-index:1000;
    background:rgba(10,14,26,.75);
    backdrop-filter:blur(16px) saturate(1.4);
    -webkit-backdrop-filter:blur(16px) saturate(1.4);
    border-bottom:1px solid rgba(255,255,255,.04);
}
.header-inner{
    display:flex;align-items:center;justify-content:space-between;
    height:64px;
}
.logo{
    display:flex;align-items:center;gap:10px;
    font-weight:700;font-size:1.15rem;
}
.logo-icon{color:var(--cyan);font-size:1.4rem}
.nav-list{display:flex;align-items:center;gap:6px}
.nav-list a{
    padding:8px 16px;
    border-radius:8px;
    font-size:.9rem;
    color:var(--text2);
    transition:all .2s;
}
.nav-list a:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-cta{
    background:var(--grad1) !important;
    color:#fff !important;
    font-weight:600 !important;
    border-radius:8px !important;
}
.nav-cta:hover{box-shadow:var(--glow-cyan) !important}

/* Mobile toggle */
.mobile-toggle{display:none;flex-direction:column;gap:4px;background:none;border:none;cursor:pointer;padding:4px}
.mobile-toggle span{display:block;width:22px;height:2px;background:var(--text);border-radius:2px;transition:.3s}
@media(max-width:768px){
    .mobile-toggle{display:flex}
    .nav{display:none}
}

/* ===== HERO ===== */
.hero{
    min-height:100vh;
    display:flex;align-items:center;
    position:relative;
    padding:120px 0 80px;
    overflow:hidden;
}
.hero-bg{
    position:absolute;inset:0;
    background:
        radial-gradient(ellipse 600px 400px at 20% 50%,rgba(77,124,255,.08),transparent),
        radial-gradient(ellipse 500px 500px at 80% 60%,rgba(139,92,246,.06),transparent),
        radial-gradient(ellipse 300px 300px at 50% 20%,rgba(0,229,255,.05),transparent);
    pointer-events:none;
}
.hero-inner{display:flex;align-items:center;gap:60px;position:relative;z-index:1;width:100%}
.hero-content{flex:1;min-width:0}
.hero-title{
    font-size:clamp(2.2rem,5.5vw,3.6rem);
    font-weight:900;
    line-height:1.12;
    margin-bottom:20px;
}
.hero-sub-title{
    display:block;
    font-size:clamp(1rem,2.5vw,1.6rem);
    font-weight:400;
    color:var(--text2);
    margin-top:8px;
}
.gradient-text{
    background:var(--grad1);
    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
    background-clip:text;
}
.hero-desc{
    color:var(--text2);
    font-size:1.05rem;
    line-height:1.8;
    max-width:600px;
    margin-bottom:36px;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:12px 28px;border-radius:10px;
    font-weight:600;font-size:.95rem;
    transition:all .25s;cursor:pointer;border:none;
}
.btn-primary{
    background:var(--grad1);
    color:#fff;
}
.btn-primary:hover{box-shadow:var(--glow-cyan);transform:translateY(-2px)}
.btn-outline{
    background:transparent;
    color:var(--text);
    border:1px solid rgba(255,255,255,.12);
}
.btn-outline:hover{
    border-color:var(--cyan);
    color:var(--cyan);
    box-shadow:var(--glow-cyan);
    transform:translateY(-2px);
}
.btn-lg{padding:16px 36px;font-size:1.05rem}
.w-full{width:100%}

/* Hero visual */
.hero-visual{flex:0 0 380px;position:relative;height:400px}
@media(max-width:1024px){.hero-visual{flex:0 0 300px;height:320px}}
@media(max-width:768px){.hero-visual{display:none}}

.data-grid{
    position:absolute;inset:0;
    background-image:
        linear-gradient(rgba(0,229,255,.04) 1px,transparent 1px),
        linear-gradient(90deg,rgba(0,229,255,.04) 1px,transparent 1px);
    background-size:30px 30px;
    border-radius:var(--radius-lg);
}
.orb{
    position:absolute;
    top:50%;left:50%;
    width:180px;height:180px;
    transform:translate(-50%,-50%);
    background:radial-gradient(circle,rgba(0,229,255,.2),rgba(77,124,255,.1),transparent);
    border-radius:50%;
    border:1px solid rgba(0,229,255,.15);
    animation:orbPulse 4s ease-in-out infinite;
}
@keyframes orbPulse{
    0%,100%{transform:translate(-50%,-50%) scale(1);opacity:1}
    50%{transform:translate(-50%,-50%) scale(1.12);opacity:.7}
}
.stats-float{
    position:absolute;
    inset:0;
    pointer-events:none;
}
.stat-card{
    position:absolute;
    background:rgba(15,21,40,.85);
    backdrop-filter:blur(8px);
    border:1px solid rgba(0,229,255,.12);
    border-radius:10px;
    padding:8px 16px;
    font-size:.85rem;
    font-weight:500;
    animation:floatUp 5s ease-in-out infinite;
    white-space:nowrap;
}
.stat-card:nth-child(1){top:15%;left:5%;animation-delay:0s}
.stat-card:nth-child(2){bottom:20%;right:0;animation-delay:1.5s}
.stat-card:nth-child(3){top:50%;right:5%;animation-delay:3s}
@keyframes floatUp{
    0%,100%{transform:translateY(0)}
    50%{transform:translateY(-10px)}
}

/* Scroll indicator */
.scroll-indicator{
    position:absolute;bottom:32px;left:50%;transform:translateX(-50%);
    display:flex;flex-direction:column;align-items:center;gap:8px;
    font-size:.75rem;color:var(--text3);letter-spacing:2px;
    font-family:var(--font-mono);
}
.scroll-line{
    width:1px;height:32px;
    background:linear-gradient(to bottom,var(--cyan),transparent);
    animation:scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine{0%{opacity:1;transform:scaleY(1)}50%{opacity:.3}100%{opacity:1;transform:scaleY(1)}}

/* ===== BOOKKEEPING ===== */
.section-bookkeeping{background:var(--bg2)}
.bk-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media(max-width:1024px){.bk-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:540px){.bk-grid{grid-template-columns:1fr}}
.bk-card{
    background:var(--bg3);
    border:1px solid rgba(255,255,255,.04);
    border-radius:var(--radius);
    padding:28px 22px;
    transition:all .3s;
}
.bk-card:hover{
    border-color:rgba(0,229,255,.15);
    transform:translateY(-4px);
    box-shadow:var(--glow-cyan);
}
.bk-icon{font-size:2rem;margin-bottom:16px}
.bk-title{font-size:1.05rem;font-weight:700;margin-bottom:8px}
.bk-desc{color:var(--text2);font-size:.9rem;line-height:1.6}
.bk-footer{margin-top:48px;text-align:center}

/* Code block showcase */
.bk-showcase{margin-top:48px;display:flex;justify-content:center}
.code-block{
    background:rgba(0,0,0,.4);
    border:1px solid rgba(0,229,255,.08);
    border-radius:var(--radius);
    padding:20px 28px;
    font-family:var(--font-mono);
    font-size:.85rem;
    line-height:2;
    min-width:400px;
}
@media(max-width:540px){.code-block{min-width:unset;width:100%;font-size:.8rem}}
.code-line .kw{color:var(--cyan)}
.code-line .val{color:var(--green)}
.code-line .warn{color:var(--pink)}
.code-line .cmt{color:var(--text3);font-style:italic}

/* ===== WORKSHOP ===== */
.section-workshop{background:var(--bg)}
.ws-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media(max-width:640px){.ws-grid{grid-template-columns:1fr}}
.ws-card{
    display:flex;align-items:flex-start;gap:18px;
    background:var(--bg3);
    border:1px solid rgba(255,255,255,.04);
    border-radius:var(--radius);
    padding:24px;
    transition:all .3s;
}
.ws-card:hover{
    border-color:rgba(139,92,246,.2);
    transform:translateY(-3px);
    box-shadow:var(--glow-purple);
}
.ws-num{
    font-family:var(--font-mono);
    font-size:1.3rem;
    font-weight:800;
    background:var(--grad2);
    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
    background-clip:text;
    flex-shrink:0;
    width:36px;
}
.ws-title{font-size:1.05rem;font-weight:700;margin-bottom:6px}
.ws-desc{color:var(--text2);font-size:.88rem;line-height:1.6}

.ws-tech-stack{margin-top:48px;text-align:center}
.tech-label{font-family:var(--font-mono);font-size:.75rem;color:var(--text3);letter-spacing:2px;display:block;margin-bottom:16px}
.tech-badges{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.badge{
    padding:6px 18px;
    border-radius:20px;
    font-size:.82rem;
    font-weight:500;
    background:rgba(77,124,255,.08);
    border:1px solid rgba(77,124,255,.12);
    color:var(--blue);
    transition:.3s;
}
.badge:hover{background:rgba(77,124,255,.15);border-color:var(--blue)}

/* ===== FEATURES ===== */
.section-features{background:var(--bg2)}
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media(max-width:1024px){.feat-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:540px){.feat-grid{grid-template-columns:1fr}}
.feat-card{
    text-align:center;
    padding:36px 20px;
    border-radius:var(--radius);
    background:var(--bg3);
    border:1px solid rgba(255,255,255,.04);
    transition:all .3s;
}
.feat-card:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.08)}
.feat-icon{font-size:2.2rem;margin-bottom:16px}
.glow-green,.glow-blue,.glow-purple,.glow-cyan{display:inline-block}
.feat-card:hover .glow-green{filter:drop-shadow(0 0 12px rgba(52,211,153,.4))}
.feat-card:hover .glow-blue{filter:drop-shadow(0 0 12px rgba(77,124,255,.4))}
.feat-card:hover .glow-purple{filter:drop-shadow(0 0 12px rgba(139,92,246,.4))}
.feat-card:hover .glow-cyan{filter:drop-shadow(0 0 12px rgba(0,229,255,.4))}
.feat-title{font-size:1.05rem;font-weight:700;margin-bottom:8px}
.feat-desc{color:var(--text2);font-size:.88rem;line-height:1.6}

/* ===== PRICING ===== */
.section-pricing{background:var(--bg)}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
@media(max-width:1024px){.price-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.price-grid{grid-template-columns:1fr}}
.price-card{
    background:var(--bg3);
    border:1px solid rgba(255,255,255,.04);
    border-radius:var(--radius-lg);
    padding:36px 28px;
    display:flex;flex-direction:column;
    transition:all .3s;position:relative;
}
.price-card:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.08);box-shadow:0 8px 40px rgba(0,0,0,.3)}
.price-card--featured{
    border-color:rgba(0,229,255,.2);
    background:linear-gradient(135deg,rgba(0,229,255,.04),rgba(77,124,255,.04));
}
.price-badge{
    position:absolute;top:-12px;left:50%;transform:translateX(-50%);
    background:var(--grad1);color:#fff;
    font-size:.72rem;font-weight:700;letter-spacing:2px;
    padding:4px 18px;border-radius:20px;text-transform:uppercase;
}
.price-header{margin-bottom:24px}
.price-name{font-size:.85rem;color:var(--text2);display:block;margin-bottom:8px}
.price-value{font-size:2.6rem;font-weight:900}
.currency{font-size:1.2rem;vertical-align:super;font-weight:600;color:var(--cyan)}
.price-period{font-size:.85rem;color:var(--text3)}
.price-features{list-style:none;margin-bottom:28px;flex:1}
.price-features li{padding:8px 0;font-size:.9rem;color:var(--text2);border-bottom:1px solid rgba(255,255,255,.04)}

/* ===== CTA ===== */
.section-cta{background:var(--bg2)}
.cta-box{
    text-align:center;
    background:linear-gradient(135deg,rgba(0,229,255,.05),rgba(77,124,255,.05));
    border:1px solid rgba(0,229,255,.1);
    border-radius:var(--radius-lg);
    padding:64px 40px;
}
.cta-title{font-size:clamp(1.6rem,4vw,2.4rem);font-weight:800;margin-bottom:16px}
.cta-desc{color:var(--text2);font-size:1.05rem;line-height:1.8;margin-bottom:32px}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:32px}
.cta-links{display:flex;gap:32px;justify-content:center;flex-wrap:wrap;font-size:.85rem;color:var(--text3)}
.cta-links span{display:inline-flex;align-items:center;gap:6px}

/* ===== FOOTER ===== */
.footer{
    border-top:1px solid rgba(255,255,255,.04);
    padding:32px 0;
}
.footer-inner{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    flex-wrap:wrap;
}
.footer-brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:.95rem}
.footer-copy{font-size:.82rem;color:var(--text3)}
.footer-nav{display:flex;gap:20px}
.footer-nav a{font-size:.82rem;color:var(--text3);transition:color .2s}
.footer-nav a:hover{color:var(--cyan)}

/* ===== RESPONSIVE FALLBACKS ===== */
@media(max-width:768px){
    .hero{min-height:auto;padding:100px 0 60px}
    .hero-inner{flex-direction:column;gap:40px}
    .hero-desc{font-size:.95rem}
    .hero-actions{flex-direction:column;align-items:stretch}
    .btn{text-align:center}
    .scroll-indicator{display:none}
    .stat-card{font-size:.75rem;padding:6px 12px}
    .code-block{padding:16px}
    .bk-showcase{margin-top:32px}
    .price-card{padding:28px 20px}
    .cta-box{padding:40px 20px}
}

/* ===== MODAL ===== */
.modal-overlay{
    position:fixed;inset:0;z-index:2000;
    background:rgba(0,0,0,.65);
    backdrop-filter:blur(6px);
    display:flex;align-items:center;justify-content:center;
    opacity:0;pointer-events:none;
    transition:opacity .3s ease;
    padding:24px;
}
.modal-overlay.active{
    opacity:1;
    pointer-events:auto;
}
.modal-content{
    background:var(--bg3);
    border:1px solid rgba(0,229,255,.12);
    border-radius:var(--radius-lg);
    padding:40px 36px 32px;
    max-width:400px;
    width:100%;
    text-align:center;
    position:relative;
    box-shadow:0 20px 60px rgba(0,0,0,.5),var(--glow-cyan);
    animation:modalIn .35s ease;
}
@keyframes modalIn{
    0%{transform:scale(.92) translateY(16px);opacity:0}
    100%{transform:scale(1) translateY(0);opacity:1}
}
.modal-close{
    position:absolute;top:12px;right:16px;
    background:none;border:none;
    font-size:1.8rem;color:var(--text3);
    cursor:pointer;line-height:1;
    transition:color .2s;
}
.modal-close:hover{color:var(--text)}
.modal-title{
    font-size:1.3rem;font-weight:700;
    margin-bottom:8px;
}
.modal-desc{
    color:var(--text2);
    font-size:.9rem;
    margin-bottom:24px;
}
.modal-qr-wrapper{
    background:var(--bg);
    border-radius:var(--radius);
    padding:16px;
    border:1px solid rgba(255,255,255,.04);
}
.modal-qr{
    width:100%;
    aspect-ratio:1;
    border-radius:8px;
    display:block;
}
.modal-hint{
    color:var(--text3);
    font-size:.8rem;
    margin-top:12px;
}
@media(max-width:480px){
    .modal-content{padding:28px 20px 24px}
}