:root {
    --navy:#0b2034;
    --ink:#142c44;
    --muted:#617487;
    --blue:#1477d4;
    --cyan:#43c8e8;
    --ice:#f1f7fa;
    --line:#d9e5ec;
    --green:#20a67a;
    --orange:#e78b49;
    --max:1180px;
}
* {box-sizing:border-box;margin:0;padding:0;}
html {scroll-behavior:smooth;}
body {
    color:var(--ink);
    font-family:Arial,Helvetica Neue,sans-serif;
    line-height:1.65;
}
a {color:inherit;text-decoration:none;}
button,input,select,textarea {font:inherit;outline:none;}
.muted {color:var(--muted);}

/* 移动端遮罩 */
.mobile-overlay{
    position:fixed;
    inset:0;
    background:rgba(0,0,0,.45);
    z-index:29;
    opacity:0;
    pointer-events:none;
    transition:opacity .24s ease;
}
.mobile-overlay.open{
    opacity:1;
    pointer-events:auto;
}

/* header */
.lp-header{
    z-index:30;
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
    height:74px;
    padding:0 max(24px,calc((100vw - var(--max))/2));
    background:#fffffff2;
    display:flex;
    justify-content:space-between;
    align-items:center;
    position:sticky;
    top:0;
}
.lp-brand{
    letter-spacing:.08em;
    display:flex;
    align-items:baseline;
    gap:5px;
    font-weight:900;
}
.lp-brand span{color:var(--blue);font-size:.78rem;}
.lp-brand small{
    color:#8da0af;
    border-left:1px solid var(--line);
    padding-left:8px;
    font-size:.52rem;
}
.lp-header nav{
    display:flex;
    align-items:center;
    gap:25px;
    font-size:.77rem;
    font-weight:700;
}
.lp-button{
    background:var(--blue);
    color:#fff;
    cursor:pointer;
    border:0;
    border-radius:3px;
    display:inline-flex;
    justify-content:center;
    padding:14px 21px;
    font-weight:800;
    box-shadow:0 12px 28px #1477d42b;
}
.lp-button:hover{background:#0d65b7;}
.lp-button.small{padding:9px 15px;}
.menu{
    display:none;
    background:transparent;
    border:none;
    gap:6px;
    grid-template-rows:repeat(3,2px);
}
.menu i{
    background:var(--ink);
    width:23px;
    height:2px;
}

/* hero */
.lp-hero{
    width:min(var(--max),calc(100% - 40px));
    display:grid;
    grid-template-columns:1fr 1.1fr;
    align-items:center;
    gap:65px;
    min-height:700px;
    margin:0 auto;
    padding:85px 0 75px;
}
.lp-kicker{
    letter-spacing:.17em;
    color:var(--blue);
    margin:0 0 18px;
    font-size:.68rem;
    font-weight:900;
}
.lp-hero h1{
    letter-spacing:-.055em;
    font-size:clamp(2.7rem,5vw,4.9rem);
    line-height:1.04;
}
.lp-hero h1 em{color:var(--blue);font-style:normal;}
.lp-lead{
    margin:27px 0 12px;
    font-size:1.17rem;
    font-weight:700;
    line-height:1.5;
}
.lp-tags{
    display:flex;
    flex-wrap:wrap;
    gap:7px;
    margin:24px 0;
}
.lp-tags span{
    background:var(--ice);
    border:1px solid #cbdde8;
    padding:7px 10px;
    font-size:.66rem;
    font-weight:800;
}
.lp-price{
    display:block;
    font-size:1.4rem;
    font-weight:900;
    margin:12px 0 16px;
    color:var(--ink);
}
.lp-visual{
    background:var(--navy);
    border-radius:22px;
    height:500px;
    padding:26px;
    position:relative;
    overflow:hidden;
    box-shadow:0 30px 70px #0b203436;
}
.lp-visual.lp-photo{background:var(--navy);padding:0;margin:0;}
.lp-photo img{
    width:100%;
    height:100%;
    object-fit:cover;
    object-position:center;
    display:block;
}
.lp-photo figcaption{
    color:#fff;
    backdrop-filter:blur(8px);
    -webkit-backdrop-filter:blur(8px);
    background:#0b2034e0;
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:18px;
    padding:13px 16px;
    font-size:.65rem;
    position:absolute;
    bottom:20px;
    left:22px;
    right:22px;
}
.lp-photo figcaption span{
    color:var(--cyan);
    letter-spacing:.12em;
    white-space:nowrap;
    font-size:.56rem;
    font-weight:900;
}

.lp-problem{
    padding:60px max(24px,calc((100vw - var(--max))/2));
    text-align:center;
}
.lp-problem h2{
    font-size:clamp(2.15rem,4vw,3rem);
    margin-bottom:16px;
}
.lp-problem>div{
    margin-top:24px;
    font-weight:700;
    letter-spacing:0.04em;
}

.lp-section{
    padding:112px max(24px,calc((100vw - var(--max))/2));
}
.lp-heading{
    margin-bottom:44px;
}
.lp-heading h2{
    font-size:clamp(2.15rem,4vw,3rem);
}
.lp-cards{
    display:grid;
    grid-template-columns:repeat(5,1fr);
    gap:16px;
}
.lp-cards article{
    border:1px solid var(--line);
    min-height:240px;
    padding:24px;
}
.lp-cards article>span{
    color:#8da2b1;
    font:700 .6rem monospace;
}
.lp-cards h3{font-size:1.1rem;margin:12px 0;}
.lp-cards p{color:var(--muted);font-size:.8rem;margin-bottom:10px;}
.lp-cards b{color:var(--blue);font-size:.75rem;font-weight:800;}
.lp-digital-boundary{
    margin-top:22px;
    font-size:.74rem;
    color:var(--muted);
}
.lp-dark{background:var(--navy);color:#fff;}
.lp-dark .lp-kicker{color:var(--cyan);}
.lp-steps{
    display:grid;
    grid-template-columns:repeat(5,1fr);
    border-block:1px solid #345069;
}
.lp-steps article{
    border-right:1px solid #345069;
    min-height:200px;
    padding:24px 16px;
}
.lp-steps article:last-child{border-right:none;}
.lp-steps span{color:#7595ac;font:700 .6rem monospace;}
.lp-steps h3{font-size:.95rem;margin:14px 0 8px;}
.lp-steps p{font-size:.8rem;color:#b4c8d6;}

.lp-fit{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:60px;
}
.lp-pill-list{
    display:flex;
    flex-wrap:wrap;
    gap:8px;
    margin-top:18px;
}
.lp-pill-list span{
    background:var(--ice);
    color:var(--ink);
    padding:6px 10px;
    font-size:.72rem;
    font-weight:700;
}
.lp-fit ul{
    list-style:none;margin-top:18px;
}
.lp-fit li{
    padding:8px 0;
    font-size:.82rem;
}

.lp-price-section{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:40px;
    align-items:center;
}
.lp-price-section strong{
    font-size:1.6rem;
    font-weight:900;
    display:block;
    margin:10px 0;
}
.lp-price-section aside h3{margin-bottom:12px;}
.lp-price-section aside ul{
    list-style:none;
    margin-bottom:22px;
}
.lp-price-section aside li{
    padding:7px 0;
    font-size:.8rem;
}

.lp-scope strong{
    display:inline-block;
    margin-top:12px;
    color:var(--orange);
}

.lp-quote{
    background:#0d2942;
    color:#fff;
    display:grid;
    grid-template-columns:.85fr 1.15fr;
    gap:60px;
    padding:100px max(24px,calc((100vw - var(--max))/2));
}
.lp-quote form{
    background:#fff;
    color:var(--ink);
    padding:36px;
    border:1px solid #c5ddea;
    box-shadow:0 24px 55px #17324d21;
}
.lp-quote label{
    display:block;
    margin-bottom:14px;
    font-size:.68rem;
    font-weight:800;
}
.lp-quote input,.lp-quote select,.lp-quote textarea{
    width:100%;
    margin-top:6px;
    padding:12px;
    background:#f9fbfc;
    border:1px solid #cbd9e2;
    display:block;
}
.lp-quote textarea{resize:vertical;}
.lp-quote>div>p:last-child{color:#a8bdcc;}
.lp-quote small{
    display:block;
    text-align:center;
    margin-top:12px;
    color:#1b8b68;
    font-size:.7rem;
    font-weight:800;
}
.form-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:16px;
}
.consent{
    font-weight:400!important;
    color:var(--muted);
}
.consent input{
    width:auto;
    display:inline-block;
    margin-right:7px;
}
.sent{text-align:center;padding:30px;}
.sent>strong{
    width:48px;
    height:48px;
    border-radius:50%;
    background:var(--green);
    color:#fff;
    display:grid;
    place-items:center;
    margin:0 auto;
}

.lp-footer{
    padding:42px max(24px,calc((100vw - var(--max))/2));
    border-top:1px solid var(--line);
    display:grid;
    grid-template-columns:auto 1fr auto;
    align-items:center;
    gap:30px;
    font-size:.68rem;
}
.lp-footer p{color:var(--muted);}

/* ========== 移动端 <=900px ========== */
@media (max-width:900px){
    .lp-header{height:66px;}
    .menu{display:grid;z-index:40;position:relative;}
    .lp-header nav{
        position:fixed;
        top:0;
        right:0;
        width:270px;
        height:100vh;
        background:#ffffff !important;
        flex-direction:column;
        align-items:stretch;
        padding:28px 24px;
        gap:18px;
        transform:translateX(100%);
        transition:transform .28s cubic‑bezier(.25,.46,.45,.94);
        z-index:35;
        box-shadow:-6px 0 22px rgba(0,0,0,.12);
        overflow-y:auto;
    }
    .lp-header nav.open{transform:translateX(0);}
    .lp-hero{grid-template-columns:1fr;padding:65px 0;min-height:auto;}
    .lp-cards,.lp-steps{grid-template-columns:1fr;}
    .lp-steps article{
        border-right:none;
        border-bottom:1px solid #345069;
        min-height:140px;
    }
    .lp-fit,.lp-price-section,.lp-quote{grid-template-columns:1fr;}
    .lp-quote{gap:40px;padding:70px 24px;}
    .lp-footer{grid-template-columns:1fr;}
}
@media (max-width:560px){
    .lp-hero{width:calc(100% - 32px);padding-top:50px;}
    .lp-visual{height:390px;padding:17px;}
    .lp-section{padding:68px 18px;}
    .lp-quote{padding:60px 18px;}
    .lp-quote form{padding:22px;}
    .form-grid{grid-template-columns:1fr;}
}