*{margin:0;padding:0;box-sizing:border-box}
:root{--p:#0f172a;--a:#06b6d4;--bg:#f1f5f9;--sf:#ffffff;--tx:#0f172a;--muted:#0f172a;--line:rgba(127,127,127,.22);--r:14px}
body{font-family:'Inter','PingFang SC','Microsoft YaHei',sans-serif;background:var(--bg);color:var(--tx);line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.wrap{width:min(1180px,92%);margin:0 auto}
.narrow{width:min(860px,92%);margin:0 auto}
h1{font-size:clamp(2rem,4vw,3.2rem);line-height:1.2;letter-spacing:-.01em}
h2{font-size:clamp(1.5rem,2.6vw,2.1rem);line-height:1.25}
h3{font-size:1.12rem}
.lede{opacity:.8;font-size:1.05rem;max-width:62ch}
.sec{padding:clamp(3rem,6vw,5.5rem) 0}
.sec-head{text-align:center;margin-bottom:2.4rem}
.sec-head.left{text-align:left}
.sec-head p{opacity:.72;margin-top:.5rem}
.eyebrow{letter-spacing:.22em;text-transform:uppercase;font-size:.72rem;color:var(--a);font-weight:700;margin-bottom:.9rem}
.badge,.pill{display:inline-block;background:color-mix(in srgb,var(--a) 16%,transparent);color:var(--a);padding:.35rem .9rem;border-radius:999px;font-size:.8rem;font-weight:700;margin-bottom:1rem}
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.7rem 1.35rem;border-radius:var(--r);font-weight:600;border:1px solid transparent;cursor:pointer;transition:.2s;font-size:.92rem}
.btn-primary{background:var(--a);color:#fff}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-ghost{border-color:var(--line);color:var(--tx);background:transparent}
.btn-lg{padding:.95rem 1.9rem;font-size:1rem}
/* header */
.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:68px}
.brand img{height:38px;width:auto}
.main-nav ul{display:flex;gap:1.4rem;font-size:.92rem}
.main-nav a{padding:.4rem 0;border-bottom:2px solid transparent;opacity:.78}
.main-nav a:hover,.main-nav a.active{opacity:1;border-color:var(--a)}
.header-cta{display:flex;align-items:center;gap:.75rem}
.mobile-toggle{display:none;background:none;border:1px solid var(--line);border-radius:10px;padding:.5rem .7rem;color:inherit}
.mobile-drawer{display:none;padding:1rem;background:var(--sf)}
.mobile-drawer ul{display:grid;gap:.6rem}
/* hero variants */
.hero{padding:clamp(3.4rem,7vw,6.5rem) 0}
.hero-left .wrap{text-align:left}
.hero-center .wrap{text-align:center;display:flex;flex-direction:column;align-items:center}
.hero-minimal .narrow{text-align:center}
.hero-actions{display:flex;gap:1rem;flex-wrap:wrap;margin-top:1.6rem}
.hero-center .hero-actions{justify-content:center}
.hero-stats{display:flex;gap:1.8rem;flex-wrap:wrap;margin-top:2rem;font-size:.9rem;opacity:.82}
.hero-stats b{color:var(--a);font-size:1.3rem;margin-right:.35rem}
.hero-split-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:3rem;align-items:center}
.hero-media img{border-radius:calc(var(--r) + 6px);box-shadow:0 30px 60px -30px rgba(0,0,0,.45)}
.hero-media-hero .media-frame{position:relative;border-radius:calc(var(--r) + 8px);overflow:hidden}
.media-overlay{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;gap:.5rem;padding:clamp(1.4rem,4vw,3rem);background:linear-gradient(90deg,rgba(0,0,0,.72),rgba(0,0,0,.12));color:#fff}
.hero-full{position:relative;min-height:88vh;display:grid;place-items:center;text-align:center;overflow:hidden}
.full-bg{position:absolute;inset:0}
.full-bg img{width:100%;height:100%;object-fit:cover;filter:brightness(.42)}
.full-inner{position:relative;z-index:2;color:#fff;display:flex;flex-direction:column;align-items:center;padding:2rem}
.hero-form-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:3rem;align-items:center}
.lead-form{background:var(--sf);border:1px solid var(--line);border-radius:calc(var(--r) + 6px);padding:1.8rem;display:grid;gap:1rem}
.lead-form h3{margin-bottom:.3rem}
.lead-form label{display:grid;gap:.35rem;font-size:.86rem;opacity:.85}
.lead-form input,.lead-form select,.news-form input{padding:.75rem .9rem;border:1px solid var(--line);border-radius:12px;background:var(--bg);color:inherit;font:inherit}
.form-tip{font-size:.78rem;opacity:.6}
/* grids & cards */
.grid{display:grid;gap:1.4rem}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-6{grid-template-columns:repeat(3,1fr)}
.card{background:var(--sf);border:1px solid var(--line);border-radius:var(--r);padding:1.6rem;transition:.22s}
.card:hover{transform:translateY(-4px);border-color:color-mix(in srgb,var(--a) 45%,transparent)}
.card-icon{width:44px;height:44px;border-radius:12px;background:color-mix(in srgb,var(--a) 16%,transparent);color:var(--a);display:grid;place-items:center;margin-bottom:1rem;font-size:1.1rem}
.card p{opacity:.74;font-size:.92rem;margin:.4rem 0 .9rem}
.card-link{color:var(--a);font-size:.86rem;font-weight:600}
.stat-card{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;background:var(--sf);border:1px solid var(--line);border-radius:var(--r);padding:1.8rem}
.stat{text-align:center}
.stat b{display:block;font-size:1.9rem;color:var(--a)}
.stat span{font-size:.86rem;opacity:.72}
.icon-row{display:grid;grid-template-columns:repeat(4,1fr);gap:1.4rem;text-align:center}
.icon-item i{font-size:1.6rem;color:var(--a);margin-bottom:.7rem}
.icon-item p{font-size:.88rem;opacity:.72}
.two-col{display:grid;grid-template-columns:.9fr 1.1fr;gap:3rem;align-items:center}
.check-list{display:grid;gap:.9rem}
.check-list li{display:grid;grid-template-columns:auto auto 1fr;gap:.7rem;align-items:baseline;font-size:.94rem}
.check-list i{color:var(--a)}
.check-list span{opacity:.72}
/* timeline */
.timeline{position:relative;display:grid;gap:1.6rem;padding-left:1.6rem;border-left:2px solid var(--line)}
.timeline li{position:relative}
.timeline li::before{content:"";position:absolute;left:-2.05rem;top:.55rem;width:12px;height:12px;border-radius:50%;background:var(--a)}
.tl-year{font-weight:800;color:var(--a)}
.tl-body p{opacity:.72;font-size:.92rem}
/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1.4rem;counter-reset:s}
.step{background:var(--sf);border:1px solid var(--line);border-radius:var(--r);padding:1.5rem}
.step-no{display:inline-block;font-weight:800;color:var(--a);font-size:1.4rem;margin-bottom:.5rem}
.step p{font-size:.9rem;opacity:.74}
/* table */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r)}
.data-table{width:100%;border-collapse:collapse;font-size:.92rem}
.data-table th,.data-table td{padding:.85rem 1rem;text-align:left;border-bottom:1px solid var(--line)}
.data-table thead{background:var(--sf)}
.data-table tbody tr:nth-child(even){background:color-mix(in srgb,var(--sf) 60%,transparent)}
.data-table a{color:var(--a)}
/* compare / pricing */
.compare,.pricing{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem}
.cmp-col,.price-card{background:var(--sf);border:1px solid var(--line);border-radius:var(--r);padding:1.7rem;display:grid;gap:.9rem;position:relative}
.cmp-col.recommended,.price-card.featured{border-color:var(--a);box-shadow:0 22px 44px -26px color-mix(in srgb,var(--a) 60%,transparent)}
.tag{position:absolute;top:-.7rem;right:1rem;background:var(--a);color:#fff;font-size:.72rem;padding:.2rem .6rem;border-radius:999px}
.cmp-col ul,.price-card ul{display:grid;gap:.5rem;font-size:.9rem}
.cmp-col li i,.price-card li i{color:var(--a);margin-right:.45rem}
.price{font-size:1.5rem;font-weight:800;color:var(--a)}
/* faq */
.faq-list{display:grid;gap:.8rem}
.faq-list.cols2{grid-template-columns:repeat(2,1fr)}
.faq-item,.acc-item{background:var(--sf);border:1px solid var(--line);border-radius:var(--r);padding:1rem 1.2rem}
.faq-item summary{cursor:pointer;font-weight:600;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";float:right;color:var(--a)}
.faq-item[open] summary::after{content:"–"}
.faq-item p{margin-top:.7rem;opacity:.76;font-size:.92rem}
.acc-item summary{cursor:pointer;font-weight:600;display:flex;gap:.6rem;align-items:center;list-style:none}
.acc-item summary::-webkit-details-marker{display:none}
.acc-item summary i{transition:.2s;color:var(--a)}
.acc-item[open] summary i{transform:rotate(90deg)}
.acc-body{margin-top:.7rem;opacity:.76;font-size:.92rem}
/* tabs */
.tab-head{display:flex;gap:.6rem;border-bottom:1px solid var(--line);margin-bottom:1.4rem;flex-wrap:wrap}
.tab-btn{background:none;border:none;border-bottom:2px solid transparent;padding:.7rem 1.1rem;color:inherit;opacity:.7;cursor:pointer;font:inherit;font-weight:600}
.tab-btn.active{opacity:1;border-color:var(--a);color:var(--a)}
.tab-pane{display:none}
.tab-pane.active{display:block}
/* chat / messages */
.chat-box{background:var(--sf);border:1px solid var(--line);border-radius:calc(var(--r) + 4px);padding:1.4rem}
.chat-stream{display:grid;gap:1rem;margin-bottom:1rem}
.bubble{display:flex;gap:.7rem;align-items:flex-start}
.bubble.u{flex-direction:row-reverse}
.avatar{width:36px;height:36px;border-radius:50%;background:var(--a);color:#fff;display:grid;place-items:center;font-size:.8rem;flex:none}
.bubble p{background:color-mix(in srgb,var(--a) 10%,transparent);padding:.7rem 1rem;border-radius:14px;font-size:.92rem;max-width:75%}
.chat-quick{display:flex;gap:.5rem;flex-wrap:wrap}
.chip{border:1px solid var(--line);background:none;color:inherit;border-radius:999px;padding:.4rem .9rem;font-size:.82rem;cursor:pointer}
.msg-stream{display:grid;gap:1rem}
.msg{display:flex;gap:.9rem;background:var(--sf);border:1px solid var(--line);border-radius:var(--r);padding:1.1rem}
.msg-avatar{width:40px;height:40px;border-radius:12px;background:color-mix(in srgb,var(--a) 16%,transparent);color:var(--a);display:grid;place-items:center;flex:none}
.msg-meta{display:flex;gap:1rem;font-size:.78rem;opacity:.6;margin-top:.4rem}
/* media */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
.g-item{position:relative;border-radius:var(--r);overflow:hidden}
.g-item img{aspect-ratio:4/3;object-fit:cover}
.g-item figcaption{position:absolute;left:0;right:0;bottom:0;padding:.7rem .9rem;background:linear-gradient(transparent,rgba(0,0,0,.7));color:#fff;font-size:.86rem}
.masonry{columns:3;column-gap:1rem}
.m-item{break-inside:avoid;margin-bottom:1rem;border-radius:var(--r);overflow:hidden}
.m-item.tall img{aspect-ratio:3/4;object-fit:cover}
.m-item img{aspect-ratio:4/3;object-fit:cover}
.m-item figcaption{padding:.55rem .3rem;font-size:.86rem;opacity:.78}
.bento{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:150px;gap:1rem}
.bento-cell{background:var(--sf);border:1px solid var(--line);border-radius:var(--r);padding:1.2rem;display:flex;flex-direction:column;justify-content:flex-end}
.bento-cell p{font-size:.86rem;opacity:.7}
.bento-cell.b0{grid-column:span 2;grid-row:span 2}
.bento-cell.b3{grid-column:span 2}
.collage{display:grid;grid-template-columns:repeat(3,1fr);grid-auto-rows:120px;gap:1rem}
.cl-item{background:color-mix(in srgb,var(--a) 14%,var(--sf));border:1px solid var(--line);border-radius:var(--r);display:grid;place-items:center;font-weight:700}
.cl-item.c0{grid-column:span 2;grid-row:span 2}
.cl-item.c1{transform:rotate(-2deg)}
.cl-item.c3{grid-column:span 2}
/* newsletter / contact / cta */
.news-box{background:var(--sf);border:1px solid var(--line);border-radius:calc(var(--r) + 4px);padding:2rem;text-align:center}
.news-form{display:flex;gap:.7rem;justify-content:center;margin-top:1.1rem;flex-wrap:wrap}
.contact-list{display:grid;gap:.8rem}
.contact-list li{display:flex;gap:.7rem;align-items:center;background:var(--sf);border:1px solid var(--line);border-radius:var(--r);padding:.9rem 1.1rem;font-size:.94rem}
.contact-list i{color:var(--a)}
.cta-sec .cta-inner{text-align:center;background:color-mix(in srgb,var(--a) 12%,var(--sf));border:1px solid var(--line);border-radius:calc(var(--r) + 6px);padding:clamp(2rem,5vw,3.4rem)}
.cta-inner p{opacity:.78;margin:.7rem 0 1.4rem}
/* footer */
.site-footer{background:var(--sf);border-top:1px solid var(--line);margin-top:2rem;padding:3rem 0 1.5rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:2rem}
.footer-grid h4{margin-bottom:.8rem;font-size:.95rem}
.footer-grid ul{display:grid;gap:.5rem;font-size:.88rem;opacity:.78}
.foot-note{font-size:.86rem;opacity:.66;margin-top:.8rem;max-width:46ch}
.foot-bottom{border-top:1px solid var(--line);margin-top:2rem;padding-top:1.2rem;font-size:.82rem;opacity:.65;text-align:center}
/* layout skeletons */
.layout-inner{display:grid;grid-template-columns:240px 1fr;gap:2.4rem;padding:2.4rem 0}
.side-rail{position:sticky;top:1.5rem;align-self:start;display:grid;gap:1.2rem;background:var(--sf);border:1px solid var(--line);border-radius:var(--r);padding:1.3rem}
.rail-nav ul{display:grid;gap:.35rem}
.rail-nav a{display:block;padding:.55rem .7rem;border-radius:10px;font-size:.9rem;opacity:.8}
.rail-nav a:hover,.rail-nav a.active{background:color-mix(in srgb,var(--a) 14%,transparent);color:var(--a);opacity:1}
.content-main{min-width:0}
.dot-nav{position:fixed;right:1.2rem;top:50%;transform:translateY(-50%);display:grid;gap:.7rem;z-index:60}
.dot-nav .dot{width:10px;height:10px;border-radius:50%;background:var(--line);display:block}
.dot-nav .dot.active{background:var(--a);transform:scale(1.3)}
.fullpage section{scroll-margin-top:70px}
@media (max-width:960px){
 .main-nav{display:none}
 .mobile-toggle{display:inline-flex}
 .hero-split-inner,.hero-form-inner,.two-col,.layout-inner{grid-template-columns:1fr}
 .side-rail{position:static}
 .grid-3,.grid-6,.icon-row,.steps,.compare,.pricing,.stat-card,.footer-grid{grid-template-columns:repeat(2,1fr)}
 .gallery{grid-template-columns:repeat(2,1fr)}
 .masonry{columns:2}
 .bento{grid-template-columns:repeat(2,1fr)}
 .faq-list.cols2{grid-template-columns:1fr}
}
@media (max-width:600px){
 .grid-2,.grid-3,.grid-4,.grid-6,.icon-row,.steps,.compare,.pricing,.stat-card,.footer-grid,.gallery,.bento{grid-template-columns:1fr}
 .masonry{columns:1}
}

/* ---- 图片展示区 ---- */
.tpl-media{padding:3rem 1.25rem}
.tpl-media-in{max-width:680px;margin:0 auto;text-align:center}
.tpl-media-img{display:block;width:100%;max-width:600px;height:auto;margin:0 auto;border-radius:16px;box-shadow:0 14px 36px rgba(0,0,0,.16)}
.tpl-media-cap{margin:1rem 0 0;font-size:.92rem;letter-spacing:.02em;opacity:.72}
/* ---- 图片展示区 end ---- */