/* ============ Reset & Base ============ */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root{
    --primary:#4f46e5;
    --primary-light:#6366f1;
    --primary-dark:#3730a3;
    --accent:#a855f7;
    --accent-light:#c084fc;
    --cyan:#06b6d4;
    --dark:#0a0e27;
    --darker:#060a1f;
    --gray:#64748b;
    --light:#f8fafc;
    --border:rgba(255,255,255,.08);
    --glass:rgba(255,255,255,.04);
    --gradient:linear-gradient(135deg,#6366f1 0%,#a855f7 50%,#c084fc 100%);
    --gradient-soft:linear-gradient(135deg,rgba(99,102,241,.12),rgba(168,85,247,.12));
    --shadow:0 20px 50px -10px rgba(79,70,229,.25);
}
html{ scroll-behavior:smooth; }
body{
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Roboto,sans-serif;
    color:#1e293b;
    line-height:1.6;
    background:#ffffff;
    overflow-x:hidden;
    -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; transition:all .3s; }
button{ font-family:inherit; cursor:pointer; border:none; background:none; }
ul{ list-style:none; }
.container{ max-width:1280px; margin:0 auto; padding:0 24px; }

/* ============ Navbar ============ */
.navbar{
    position:sticky;
    top:0;
    z-index:100;
    background:rgba(255,255,255,.85);
    backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);
    border-bottom:1px solid rgba(0,0,0,.06);
    transition:all .3s;
}
.navbar.scrolled{ box-shadow:0 4px 30px rgba(0,0,0,.08); }
.nav-inner{ display:flex; align-items:center; justify-content:space-between; height:72px; }
.logo{ display:flex; align-items:center; gap:12px; }
.logo-mark{ width:42px; height:42px; display:flex; align-items:center; justify-content:center; }
.logo-mark svg{ width:100%; height:100%; }
.logo-text{ display:flex; flex-direction:column; line-height:1.1; }
.logo-text strong{ font-size:19px; color:var(--dark); font-weight:700; letter-spacing:1px; }
.logo-text em{ font-size:11px; color:var(--gray); font-style:normal; letter-spacing:2px; }
.nav-menu{ display:flex; gap:36px; }
.nav-menu a{
    position:relative;
    font-size:15px;
    font-weight:500;
    color:#334155;
    padding:6px 0;
}
.nav-menu a::after{
    content:"";
    position:absolute;
    left:50%;
    bottom:-4px;
    width:0;
    height:2px;
    background:var(--gradient);
    transition:all .3s;
    transform:translateX(-50%);
    border-radius:2px;
}
.nav-menu a:hover,.nav-menu a.active{ color:var(--primary); }
.nav-menu a:hover::after,.nav-menu a.active::after{ width:100%; }
.nav-cta{
    padding:10px 22px;
    background:var(--gradient);
    color:#fff;
    border-radius:24px;
    font-size:14px;
    font-weight:600;
    box-shadow:0 4px 14px rgba(99,102,241,.4);
}
.nav-cta:hover{ transform:translateY(-2px); box-shadow:0 8px 20px rgba(99,102,241,.5); }
.nav-toggle{ display:none; width:36px; height:36px; flex-direction:column; justify-content:center; gap:5px; }
.nav-toggle span{ display:block; width:24px; height:2px; background:var(--dark); border-radius:2px; transition:.3s; }
.nav-toggle.active span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2){ opacity:0; }
.nav-toggle.active span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }

/* ============ Buttons ============ */
.btn{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:14px 32px;
    border-radius:30px;
    font-size:15px;
    font-weight:600;
    transition:all .3s;
    cursor:pointer;
}
.btn-primary{
    background:var(--gradient);
    color:#fff;
    box-shadow:0 8px 24px rgba(99,102,241,.35);
}
.btn-primary span{ transition:transform .3s; }
.btn-primary:hover{ transform:translateY(-2px); box-shadow:0 12px 30px rgba(99,102,241,.5); }
.btn-primary:hover span{ transform:translateX(4px); }
.btn-ghost{
    background:rgba(255,255,255,.1);
    color:#fff;
    border:1px solid rgba(255,255,255,.3);
    backdrop-filter:blur(10px);
}
.btn-ghost:hover{ background:rgba(255,255,255,.2); border-color:rgba(255,255,255,.5); }
.btn-light{
    background:#fff;
    color:var(--primary);
    box-shadow:0 8px 24px rgba(0,0,0,.15);
}
.btn-light:hover{ transform:translateY(-2px); }
.btn-large{ padding:18px 40px; font-size:16px; }
.btn-block{ display:flex; width:100%; justify-content:center; }

/* ============ Hero ============ */
.hero{
    position:relative;
    min-height:calc(100vh - 100px);
    background:var(--darker);
    color:#fff;
    overflow:hidden;
    display:flex;
    align-items:center;
    padding:80px 0 60px;
}
.hero-bg{ position:absolute; inset:0; pointer-events:none; overflow:hidden; }
.hero-orb{
    position:absolute;
    border-radius:50%;
    filter:blur(80px);
    opacity:.5;
}
.hero-orb-1{
    width:500px; height:500px;
    background:radial-gradient(circle,#6366f1,transparent 70%);
    top:-100px; left:-100px;
    animation:float 20s ease-in-out infinite;
}
.hero-orb-2{
    width:600px; height:600px;
    background:radial-gradient(circle,#a855f7,transparent 70%);
    bottom:-150px; right:-150px;
    animation:float 25s ease-in-out infinite reverse;
}
@keyframes float{
    0%,100%{ transform:translate(0,0) scale(1); }
    50%{ transform:translate(50px,-30px) scale(1.1); }
}
.hero-grid{
    position:absolute;
    inset:0;
    background-image:
        linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
        linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
    background-size:60px 60px;
    mask-image:radial-gradient(ellipse at center,#000 30%,transparent 70%);
}
.hero-inner{
    position:relative;
    z-index:2;
    display:grid;
    grid-template-columns:1.1fr 1fr;
    gap:60px;
    align-items:center;
}
.hero-tag{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:8px 16px;
    background:rgba(99,102,241,.15);
    border:1px solid rgba(99,102,241,.3);
    border-radius:30px;
    font-size:13px;
    color:var(--accent-light);
    letter-spacing:1px;
    margin-bottom:24px;
}
.hero-tag i{
    width:8px; height:8px;
    background:var(--accent-light);
    border-radius:50%;
    box-shadow:0 0 10px var(--accent-light);
    animation:pulse 2s infinite;
}
@keyframes pulse{
    0%,100%{ opacity:1; transform:scale(1); }
    50%{ opacity:.5; transform:scale(1.3); }
}
.hero-title{
    font-size:clamp(40px,5.5vw,72px);
    font-weight:800;
    line-height:1.15;
    margin-bottom:24px;
    letter-spacing:-1px;
}
.title-line{ display:block; }
.hero-title em{
    font-style:normal;
    background:var(--gradient);
    -webkit-background-clip:text;
    background-clip:text;
    -webkit-text-fill-color:transparent;
    position:relative;
}
.hero-sub{
    font-size:17px;
    line-height:1.7;
    color:rgba(255,255,255,.75);
    margin-bottom:36px;
    max-width:520px;
}
.hero-actions{ display:flex; gap:16px; margin-bottom:40px; flex-wrap:wrap; }
.hero-points{
    display:flex;
    flex-wrap:wrap;
    gap:24px;
    color:rgba(255,255,255,.7);
    font-size:14px;
}
.hero-points li{ display:flex; align-items:center; gap:8px; }
.dot{
    width:6px; height:6px;
    background:var(--accent-light);
    border-radius:50%;
}
.hero-visual{
    position:relative;
    display:flex;
    justify-content:center;
    align-items:center;
}
.hero-image-wrap{
    position:relative;
    width:100%;
    max-width:520px;
    aspect-ratio:1;
    display:flex;
    align-items:center;
    justify-content:center;
}
.hero-glow{
    position:absolute;
    inset:10%;
    background:radial-gradient(circle,rgba(168,85,247,.4),transparent 70%);
    filter:blur(40px);
    border-radius:50%;
    animation:float 8s ease-in-out infinite;
}
.hero-product{
    position:relative;
    z-index:2;
    width:90%;
    max-width:480px;
    filter:drop-shadow(0 30px 60px rgba(168,85,247,.5));
    animation:floatProduct 6s ease-in-out infinite;
}
@keyframes floatProduct{
    0%,100%{ transform:translateY(0) rotate(-3deg); }
    50%{ transform:translateY(-20px) rotate(3deg); }
}
.hero-badge{
    position:absolute;
    z-index:3;
    background:rgba(255,255,255,.95);
    color:var(--dark);
    padding:14px 18px;
    border-radius:16px;
    box-shadow:0 12px 40px rgba(99,102,241,.4);
    backdrop-filter:blur(10px);
    text-align:center;
    animation:float 4s ease-in-out infinite;
}
.hero-badge strong{
    display:block;
    font-size:24px;
    font-weight:800;
    background:var(--gradient);
    -webkit-background-clip:text;
    background-clip:text;
    -webkit-text-fill-color:transparent;
    line-height:1;
}
.hero-badge strong small{ font-size:14px; font-weight:600; }
.hero-badge span{ display:block; font-size:12px; color:var(--gray); margin-top:4px; }
.hero-badge-1{ top:8%; right:-5%; animation-delay:0s; }
.hero-badge-2{ bottom:18%; left:-8%; animation-delay:1s; }
.hero-badge-3{ bottom:5%; right:5%; animation-delay:2s; }

.hero-scroll{
    position:absolute;
    bottom:30px;
    left:50%;
    transform:translateX(-50%);
    z-index:2;
    color:rgba(255,255,255,.5);
    font-size:11px;
    letter-spacing:3px;
    display:flex;
    flex-direction:column;
    align-items:center;
    gap:10px;
}
.scroll-line{
    width:1px;
    height:40px;
    background:rgba(255,255,255,.3);
    position:relative;
    overflow:hidden;
}
.scroll-line::after{
    content:"";
    position:absolute;
    top:0; left:0;
    width:100%; height:50%;
    background:linear-gradient(to bottom,transparent,var(--accent-light));
    animation:scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine{
    0%{ transform:translateY(-100%); }
    100%{ transform:translateY(200%); }
}

/* ============ Section General ============ */
.section{
    padding:100px 0;
    background:#fff;
}
.section:nth-of-type(even){
    background:linear-gradient(180deg,#fafbff 0%,#fff 100%);
}
.section-head{
    text-align:center;
    max-width:720px;
    margin:0 auto 60px;
}
.section-tag{
    display:inline-block;
    padding:6px 16px;
    background:var(--gradient-soft);
    color:var(--primary);
    font-size:12px;
    font-weight:600;
    letter-spacing:2px;
    border-radius:20px;
    margin-bottom:16px;
    border:1px solid rgba(99,102,241,.15);
}
.section-title{
    font-size:clamp(28px,4vw,42px);
    font-weight:800;
    color:var(--dark);
    margin-bottom:16px;
    letter-spacing:-.5px;
}
.section-desc{
    font-size:16px;
    color:var(--gray);
    line-height:1.7;
}
.section-head-light .section-title{ color:#fff; }
.section-head-light .section-desc{ color:rgba(255,255,255,.7); }
.section-head-light .section-tag{
    background:rgba(255,255,255,.1);
    color:var(--accent-light);
    border-color:rgba(168,85,247,.3);
}

/* ============ Advantages ============ */
.advantage-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:24px;
}
.advantage-card{
    background:#fff;
    padding:32px 28px;
    border-radius:20px;
    border:1px solid rgba(99,102,241,.1);
    transition:all .4s;
    position:relative;
    overflow:hidden;
    display:flex;
    flex-direction:column;
}
.advantage-card::before{
    content:"";
    position:absolute;
    top:0; left:0;
    width:100%; height:3px;
    background:var(--gradient);
    transform:scaleX(0);
    transform-origin:left;
    transition:transform .4s;
}
.advantage-card:hover{
    transform:translateY(-8px);
    box-shadow:0 20px 40px -10px rgba(99,102,241,.2);
    border-color:transparent;
}
.advantage-card:hover::before{ transform:scaleX(1); }
.adv-icon{
    width:60px; height:60px;
    border-radius:16px;
    display:flex;
    align-items:center;
    justify-content:center;
    margin-bottom:20px;
    color:#fff;
}
.adv-icon svg{ width:32px; height:32px; }
.adv-icon-1{ background:linear-gradient(135deg,#f43f5e,#fb7185); }
.adv-icon-2{ background:linear-gradient(135deg,#06b6d4,#0ea5e9); }
.adv-icon-3{ background:linear-gradient(135deg,#a855f7,#c084fc); }
.adv-icon-4{ background:linear-gradient(135deg,#4f46e5,#6366f1); }
.advantage-card h3{
    font-size:18px;
    font-weight:700;
    color:var(--dark);
    margin-bottom:12px;
}
.advantage-card p{
    color:var(--gray);
    font-size:14px;
    line-height:1.7;
    margin-bottom:16px;
}
.adv-list{
    border-top:1px dashed rgba(99,102,241,.15);
    padding-top:14px;
    margin-top:auto;
}
.adv-list li{
    font-size:13px;
    color:var(--primary);
    font-weight:500;
    padding:4px 0;
    position:relative;
    padding-left:18px;
}
.adv-list li::before{
    content:"◆";
    position:absolute;
    left:0;
    color:var(--accent-light);
    font-size:10px;
    top:7px;
}

/* ============ Products ============ */
.product-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:30px;
    margin-bottom:40px;
}
.product-card{
    background:#fff;
    border-radius:24px;
    overflow:hidden;
    border:1px solid rgba(99,102,241,.08);
    transition:all .4s;
    position:relative;
}
.product-card:hover{
    transform:translateY(-10px);
    box-shadow:0 30px 60px -15px rgba(99,102,241,.25);
}
.product-featured{
    background:linear-gradient(180deg,#1e1b4b 0%,#312e81 100%);
    color:#fff;
    border-color:transparent;
    box-shadow:0 20px 50px -10px rgba(99,102,241,.4);
}
.product-featured .product-body h3,
.product-featured .product-model{ color:#fff; }
.product-featured .product-body p{ color:rgba(255,255,255,.75); }
.product-image{
    position:relative;
    padding:36px;
    background:radial-gradient(circle at center,#f5f3ff,#ede9fe);
    aspect-ratio:1;
    display:flex;
    align-items:center;
    justify-content:center;
    overflow:hidden;
}
.product-featured .product-image{
    background:radial-gradient(circle at center,rgba(168,85,247,.3),rgba(99,102,241,.2));
}
.product-image img{
    width:80%;
    filter:drop-shadow(0 10px 20px rgba(0,0,0,.15));
    transition:transform .5s;
}
.product-card:hover .product-image img{ transform:scale(1.08) rotate(-2deg); }
.product-flag{
    position:absolute;
    top:16px; left:16px;
    padding:5px 12px;
    background:rgba(255,255,255,.95);
    color:var(--primary);
    font-size:12px;
    font-weight:600;
    border-radius:20px;
    box-shadow:0 4px 12px rgba(0,0,0,.1);
}
.product-flag-purple{
    background:linear-gradient(135deg,#a855f7,#c084fc);
    color:#fff;
}
.product-body{ padding:28px 24px; }
.product-model{
    display:inline-block;
    font-size:13px;
    font-weight:700;
    color:var(--primary);
    letter-spacing:2px;
    padding:4px 10px;
    background:var(--gradient-soft);
    border-radius:6px;
    margin-bottom:10px;
}
.product-body h3{
    font-size:22px;
    font-weight:700;
    color:var(--dark);
    margin-bottom:10px;
}
.product-body p{
    font-size:14px;
    color:var(--gray);
    line-height:1.7;
    margin-bottom:16px;
}
.product-specs{
    display:flex;
    gap:8px;
    flex-wrap:wrap;
    margin-bottom:20px;
}
.product-specs span{
    font-size:12px;
    padding:5px 10px;
    background:rgba(99,102,241,.08);
    color:var(--primary);
    border-radius:6px;
}
.product-featured .product-specs span{
    background:rgba(255,255,255,.15);
    color:#fff;
}
.product-link{
    font-size:14px;
    font-weight:600;
    color:var(--primary);
    display:inline-flex;
    align-items:center;
    gap:4px;
    transition:gap .3s;
}
.product-link:hover{ gap:10px; }
.product-featured .product-link{ color:var(--accent-light); }

/* ============ Gallery (in Products) ============ */
.gallery-wrap{
    position:relative;
    max-width:900px;
    margin:0 auto;
    overflow:hidden;
    border-radius:24px;
    background:linear-gradient(180deg,#f5f3ff 0%,#ede9fe 100%);
    border:1px solid rgba(99,102,241,.12);
}
.gallery-track{
    display:flex;
    transition:transform .6s cubic-bezier(.65,.05,.36,1);
}
.gallery-slide{
    flex-shrink:0;
    width:100%;
    padding:40px;
    text-align:center;
}
.gallery-slide img{
    max-height:480px;
    margin:0 auto;
    filter:drop-shadow(0 30px 60px rgba(99,102,241,.35));
}
.gallery-caption{
    display:block;
    margin-top:24px;
    font-size:16px;
    color:var(--primary-dark);
    letter-spacing:2px;
}
.gallery-btn{
    position:absolute;
    top:50%;
    transform:translateY(-50%);
    width:48px; height:48px;
    background:rgba(255,255,255,.85);
    backdrop-filter:blur(10px);
    border:1px solid rgba(99,102,241,.25);
    border-radius:50%;
    color:var(--primary);
    font-size:24px;
    z-index:3;
    transition:all .3s;
}
.gallery-btn:hover{ background:var(--primary); border-color:var(--primary); color:#fff; }
.gallery-prev{ left:20px; }
.gallery-next{ right:20px; }
.gallery-dots{
    display:flex;
    justify-content:center;
    gap:10px;
    margin-top:30px;
}
.gallery-dots span{
    width:30px; height:4px;
    background:rgba(99,102,241,.2);
    border-radius:2px;
    cursor:pointer;
    transition:all .3s;
}
.gallery-dots span.active{
    width:50px;
    background:var(--gradient);
}

/* ============ Principle ============ */
.principle-flow{
    display:flex;
    align-items:center;
    justify-content:center;
    gap:10px;
    margin-bottom:60px;
    flex-wrap:wrap;
}
.flow-step{
    flex:1;
    min-width:180px;
    max-width:240px;
    background:#fff;
    padding:30px 24px;
    border-radius:20px;
    text-align:center;
    border:1px solid rgba(99,102,241,.1);
    transition:all .4s;
    position:relative;
}
.flow-step:hover{
    transform:translateY(-6px);
    box-shadow:0 20px 40px -10px rgba(99,102,241,.2);
}
.flow-num{
    font-size:42px;
    font-weight:800;
    background:var(--gradient);
    -webkit-background-clip:text;
    background-clip:text;
    -webkit-text-fill-color:transparent;
    line-height:1;
    margin-bottom:12px;
}
.flow-step h4{
    font-size:18px;
    font-weight:700;
    color:var(--dark);
    margin-bottom:8px;
}
.flow-step p{
    color:var(--gray);
    font-size:13px;
    line-height:1.6;
}
.flow-arrow{
    font-size:28px;
    color:var(--accent-light);
    font-weight:700;
    flex-shrink:0;
}
.principle-quote{
    max-width:800px;
    margin:0 auto;
    text-align:center;
    padding:50px;
    background:linear-gradient(135deg,#1e1b4b,#312e81);
    border-radius:24px;
    color:#fff;
    position:relative;
}
.quote-mark{
    font-size:120px;
    line-height:.5;
    color:var(--accent);
    opacity:.3;
    position:absolute;
    top:30px; left:40px;
    font-family:Georgia,serif;
}
.principle-quote p{
    font-size:24px;
    margin-bottom:16px;
    position:relative;
    z-index:2;
}
.principle-quote strong{
    background:var(--gradient);
    -webkit-background-clip:text;
    background-clip:text;
    -webkit-text-fill-color:transparent;
    font-weight:800;
}
.principle-quote span{
    color:rgba(255,255,255,.6);
    font-size:15px;
    letter-spacing:1px;
}

/* ============ Join ============ */
.join{
    background:var(--darker);
    color:#fff;
    padding:100px 0;
    position:relative;
    overflow:hidden;
}
.join-bg{ position:absolute; inset:0; pointer-events:none; }
.join-inner{
    position:relative;
    z-index:2;
    max-width:900px;
    margin:0 auto;
}
.join-text{ text-align:center; }
.join-text h2{
    font-size:clamp(32px,4.5vw,48px);
    font-weight:800;
    margin-bottom:20px;
    letter-spacing:-.5px;
}
.join-text > p{
    font-size:17px;
    line-height:1.8;
    color:rgba(255,255,255,.75);
    margin-bottom:40px;
    max-width:700px;
    margin-left:auto;
    margin-right:auto;
}
.join-support{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:20px;
    margin-bottom:40px;
}
.support-item{
    background:rgba(255,255,255,.05);
    border:1px solid rgba(255,255,255,.1);
    border-radius:16px;
    padding:24px 16px;
    text-align:center;
    transition:all .3s;
}
.support-item:hover{
    background:rgba(255,255,255,.1);
    border-color:var(--accent-light);
    transform:translateY(-4px);
}
.support-item strong{
    display:block;
    font-size:18px;
    color:var(--accent-light);
    margin-bottom:6px;
}
.support-item span{ font-size:13px; color:rgba(255,255,255,.6); }

/* ============ Contact ============ */
.contact-info{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:24px;
    max-width:900px;
    margin:0 auto;
}
.contact-item{
    display:flex;
    flex-direction:column;
    align-items:center;
    text-align:center;
    gap:14px;
    padding:32px 24px;
    background:#fff;
    border-radius:16px;
    border:1px solid rgba(99,102,241,.08);
    transition:all .3s;
}
.contact-item:hover{
    transform:translateY(-4px);
    box-shadow:0 12px 24px rgba(99,102,241,.1);
}
.contact-icon{
    width:48px; height:48px;
    background:var(--gradient-soft);
    border-radius:12px;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:22px;
}
.contact-item h4{
    font-size:13px;
    color:var(--gray);
    font-weight:500;
    margin-bottom:4px;
}
.contact-item p{
    font-size:16px;
    font-weight:700;
    color:var(--dark);
}
.contact-item span{
    font-size:12px;
    color:var(--gray);
}

/* ============ Video Modal ============ */
.video-modal{
    position:fixed;
    inset:0;
    z-index:200;
    display:none;
    align-items:center;
    justify-content:center;
    padding:24px;
}
.video-modal.open{ display:flex; }
.video-modal-mask{
    position:absolute;
    inset:0;
    background:rgba(6,10,31,.85);
    backdrop-filter:blur(8px);
}
.video-modal-box{
    position:relative;
    z-index:2;
    width:100%;
    max-width:960px;
    background:#0a0e27;
    border-radius:20px;
    padding:16px;
    box-shadow:0 40px 100px -20px rgba(0,0,0,.8);
    animation:videoIn .35s cubic-bezier(.2,.65,.3,1);
}
@keyframes videoIn{
    from{ opacity:0; transform:translateY(40px) scale(.95); }
    to{ opacity:1; transform:translateY(0) scale(1); }
}
.video-modal-box video{
    width:100%;
    border-radius:12px;
    background:#000;
    display:block;
    aspect-ratio:16/9;
}
.video-modal-title{
    text-align:center;
    color:rgba(255,255,255,.8);
    font-size:14px;
    padding:12px 0 4px;
    letter-spacing:1px;
}
.video-modal-close{
    position:absolute;
    top:-48px;
    right:0;
    width:40px; height:40px;
    background:rgba(255,255,255,.1);
    border:1px solid rgba(255,255,255,.25);
    border-radius:50%;
    color:#fff;
    font-size:26px;
    line-height:1;
    display:flex;
    align-items:center;
    justify-content:center;
    transition:all .3s;
}
.video-modal-close:hover{
    background:#f43f5e;
    border-color:#f43f5e;
    transform:rotate(90deg);
}

/* ============ Footer ============ */
.footer{
    background:var(--darker);
    color:rgba(255,255,255,.7);
    padding:80px 0 30px;
}
.footer-grid{
    display:grid;
    grid-template-columns:2fr 1fr 1fr 1fr;
    gap:40px;
    padding-bottom:40px;
    border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand p{
    font-size:14px;
    line-height:1.7;
    margin:20px 0;
    max-width:380px;
}
.footer-social{ display:flex; gap:12px; }
.footer-social a{
    width:38px; height:38px;
    background:rgba(255,255,255,.05);
    border:1px solid rgba(255,255,255,.1);
    border-radius:10px;
    display:flex;
    align-items:center;
    justify-content:center;
    transition:all .3s;
}
.footer-social svg{ width:18px; height:18px; }
.footer-social a:hover{
    background:var(--gradient);
    border-color:transparent;
    transform:translateY(-2px);
}
.footer-col h5{
    color:#fff;
    font-size:15px;
    margin-bottom:20px;
    font-weight:600;
}
.footer-col a{
    display:block;
    color:rgba(255,255,255,.6);
    font-size:14px;
    padding:6px 0;
    transition:all .3s;
}
.footer-col a:hover{ color:var(--accent-light); padding-left:6px; }
.footer-bottom{
    padding-top:24px;
    font-size:13px;
    color:rgba(255,255,255,.5);
}
.footer-icp{
    color:rgba(255,255,255,.5);
    transition:color .3s;
}
.footer-icp:hover{
    color:var(--accent-light);
}
.footer-records{
    margin-top:10px;
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:14px;
}
.footer-gongan{
    display:inline-flex;
    align-items:center;
    color:rgba(255,255,255,.5);
    transition:color .3s;
}
.footer-gongan img{
    width:16px;
    height:16px;
    margin-right:6px;
    vertical-align:middle;
}
.footer-gongan:hover{
    color:var(--accent-light);
}

/* ============ Floating Buttons ============ */
.floating{
    position:fixed;
    right:24px;
    bottom:30px;
    z-index:99;
    display:flex;
    flex-direction:column;
    gap:12px;
}
.floating-btn{
    width:54px;
    height:54px;
    background:var(--gradient);
    color:#fff;
    border-radius:50%;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    box-shadow:0 8px 20px rgba(99,102,241,.4);
    transition:all .3s;
    font-size:10px;
    gap:1px;
}
.floating-btn svg{ width:22px; height:22px; }
.floating-btn span{ line-height:1; }
.floating-btn:hover{ transform:translateY(-3px) scale(1.05); }
.floating-top{
    background:rgba(99,102,241,.15);
    color:var(--primary);
    backdrop-filter:blur(10px);
    border:1px solid rgba(99,102,241,.2);
    opacity:0;
    pointer-events:none;
    transition:all .3s;
}
.floating-top.show{ opacity:1; pointer-events:auto; }

/* ============ Reveal Animation ============ */
.reveal{
    opacity:0;
    transform:translateY(30px);
    transition:all .8s cubic-bezier(.2,.65,.3,1);
}
.reveal.show{
    opacity:1;
    transform:translateY(0);
}

/* ============ Responsive ============ */
@media (max-width:1024px){
    .hero-inner{ grid-template-columns:1fr; gap:40px; }
    .hero-visual{ max-width:480px; margin:0 auto; }
    .advantage-grid{ grid-template-columns:repeat(2,1fr); }
    .product-grid{ grid-template-columns:1fr; max-width:480px; margin:0 auto 40px; }
    .contact-info{ grid-template-columns:1fr; }
    .footer-grid{ grid-template-columns:1fr 1fr; gap:30px; }
    .footer-brand{ grid-column:span 2; }
    .join-support{ grid-template-columns:1fr 1fr; }
    .flow-arrow{ display:none; }
    .principle-flow{ flex-direction:column; }
}
@media (max-width:768px){
    .nav-menu{
        position:absolute;
        top:100%; left:0; right:0;
        background:#fff;
        flex-direction:column;
        padding:20px;
        gap:0;
        border-top:1px solid rgba(0,0,0,.06);
        box-shadow:0 10px 30px rgba(0,0,0,.1);
        display:none;
    }
    .nav-menu.active{ display:flex; }
    .nav-menu a{ padding:14px 0; border-bottom:1px solid rgba(0,0,0,.05); }
    .nav-menu a:last-child{ border-bottom:none; }
    .nav-toggle{ display:flex; }
    .nav-cta{ display:none; }
    .nav-inner{ height:60px; }
    .logo-mark{ width:36px; height:36px; }
    .logo-text strong{ font-size:17px; }
    .hero{ padding:48px 0 40px; min-height:auto; }
    .hero-title{ font-size:34px; }
    .hero-sub{ font-size:15px; }
    .hero-actions .btn{ padding:13px 26px; font-size:14px; }
    .hero-points{ gap:14px 20px; font-size:13px; }
    .hero-scroll{ display:none; }
    /* 徽章收进画面内，避免溢出裁切 */
    .hero-image-wrap{ max-width:340px; }
    .hero-product{ width:88%; }
    .hero-badge{ padding:10px 12px; border-radius:12px; }
    .hero-badge strong{ font-size:18px; }
    .hero-badge strong small{ font-size:11px; }
    .hero-badge span{ font-size:10px; }
    .hero-badge-1{ top:2%; right:0; }
    .hero-badge-2{ bottom:12%; left:0; }
    .hero-badge-3{ bottom:0; right:2%; }
    .section{ padding:56px 0; }
    .section-head{ margin-bottom:40px; }
    .section-title{ font-size:26px; }
    .section-desc{ font-size:14px; }
    .gallery-slide{ padding:20px; }
    .gallery-slide img{ max-height:280px; }
    .gallery-btn{ width:40px; height:40px; font-size:20px; opacity:.9; }
    .product-image{ padding:24px; }
    .principle-quote{ padding:36px 24px; }
    .principle-quote p{ font-size:18px; }
    .quote-mark{ font-size:80px; top:20px; left:20px; }
    .footer-grid{ grid-template-columns:1fr; }
    .footer-brand{ grid-column:auto; }
    .footer-bottom{ text-align:center; }
    .footer-records{ justify-content:center; }
    .floating{ right:14px; bottom:14px; }
    .floating-btn{ width:46px; height:46px; }
    /* 视频弹窗移动端适配 */
    .video-modal{ padding:12px; }
    .video-modal-box{ padding:10px; border-radius:14px; }
    .video-modal-close{ top:-42px; width:34px; height:34px; font-size:22px; }
    .video-modal-title{ font-size:12px; padding:8px 0 2px; }
}
@media (max-width:480px){
    .hero-title{ font-size:28px; }
    .hero-sub{ font-size:14px; }
    .hero-points{ gap:10px 16px; }
    .hero-actions .btn{ padding:12px 22px; font-size:13px; }
    .advantage-card{ padding:24px 20px; }
    .product-body{ padding:22px 18px; }
    .gallery-slide img{ max-height:220px; }
    .gallery-btn{ width:34px; height:34px; font-size:18px; }
    .principle-quote p{ font-size:16px; }
    .join-support{ grid-template-columns:1fr; }
    .container{ padding:0 16px; }
}