:root{--bg:#14161a;--panel:#1b1f24;--panel2:#20252b;--ink:#e9e4da;--mut:#a7adb6;--dim:#6f7580;--acc:#c9a06a;--acc2:#8f6b3f;--line:rgba(255,255,255,.09);--serif:'Noto Serif SC','Source Han Serif SC','STSong',serif;--sans:-apple-system,'PingFang SC','Microsoft YaHei',sans-serif}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
h1,h2,h3,.serif{font-family:var(--serif);font-weight:600;letter-spacing:.02em}
/* header：两层（品牌条 + 横贯导航条），对标华浔 */
header{position:sticky;top:0;z-index:50;background:rgba(18,20,24,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.topbar{display:flex;align-items:center;justify-content:space-between;height:78px}
.brand{font-family:var(--serif);color:var(--ink);display:flex;align-items:center;gap:10px}
.brand em{color:var(--acc);font-style:normal}
.brand b{font-weight:600;font-family:var(--serif);font-size:21px;letter-spacing:.03em}
.brand i{font-style:normal;font-family:var(--sans);font-size:12.5px;color:var(--mut);letter-spacing:.08em;border-left:1px solid var(--line);padding-left:11px}
@media(max-width:900px){.brand i{display:none}}
.topright{display:flex;align-items:center;gap:22px}
.slogan{font-family:var(--serif);font-size:13.5px;color:var(--dim);letter-spacing:.1em}
.navbar{border-top:1px solid var(--line);background:rgba(255,255,255,.03)}
.navlist{display:flex;justify-content:center;list-style:none}
.navlist>li{position:relative}
.navlist>li>a{position:relative;display:flex;align-items:center;gap:6px;height:58px;padding:0 29px;font-size:15.5px;letter-spacing:.07em;color:var(--mut);transition:color .2s;white-space:nowrap}
.navlist>li>a::after{content:'';position:absolute;left:29px;right:29px;bottom:0;height:2px;background:var(--acc);transform:scaleX(0);transform-origin:left;transition:transform .25s}
.navlist>li>a:hover,.navlist>li>a.on{color:var(--acc)}
.navlist>li>a:hover::after,.navlist>li>a.on::after{transform:scaleX(1)}
.navlist .caret{width:0;height:0;font-size:0;line-height:0;border-left:4px solid transparent;border-right:4px solid transparent;border-top:5px solid currentColor;opacity:.7;transition:transform .2s}
.navlist>li:hover .caret{transform:rotate(180deg)}
.navlist .sub{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(6px);min-width:184px;background:#191c21;border:1px solid var(--line);border-top:2px solid var(--acc);box-shadow:0 18px 38px rgba(0,0,0,.55);padding:8px 0;opacity:0;visibility:hidden;transition:.18s;z-index:70;list-style:none}
.navlist>li::after{content:'';position:absolute;left:-8px;right:-8px;top:100%;height:18px}
.navlist>li:hover .sub,.navlist>li:focus-within .sub{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.navlist .sub a{display:block;padding:10px 22px;font-size:14px;color:var(--mut);white-space:nowrap;transition:.15s}
.navlist .sub a:hover{color:var(--acc);background:rgba(255,255,255,.045);padding-left:26px}
.navlist .sub .sub-t{padding:10px 22px 4px;font-size:11px;letter-spacing:.16em;color:#686d75;pointer-events:none}
.navtel{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--acc2);color:var(--acc);padding:8px 18px;border-radius:2px;font-size:14.5px;letter-spacing:.04em;transition:.2s}
.navtel:hover{background:var(--acc);color:#14161a}
.navtel .telicon{font-size:14px;line-height:1}
#navbtn{display:none;background:none;border:1px solid var(--line);color:var(--ink);font-size:18px;padding:4px 12px;border-radius:3px}
/* hero */
.hero{position:relative;min-height:76vh;display:flex;align-items:center;overflow:hidden}
.hero img.bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:brightness(.55) saturate(.9)}
.hero .inner{position:relative;z-index:2;padding:110px 24px}
.hero .kicker{color:var(--acc);letter-spacing:.5em;font-size:13px;margin-bottom:22px}
.hero h1{font-size:clamp(34px,5.2vw,62px);line-height:1.25;margin-bottom:18px}
.hero p.sub{color:#d8d2c6;font-size:clamp(15px,1.6vw,19px);max-width:640px}
.hero .ctas{margin-top:38px;display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-block;padding:13px 34px;font-size:15px;border-radius:2px;letter-spacing:.1em;transition:.2s}
.btn.gold{background:var(--acc);color:#14161a}
.btn.gold:hover{background:#dcb87e}
.btn.ghost{border:1px solid rgba(255,255,255,.4);color:#fff}
.btn.ghost:hover{border-color:var(--acc);color:var(--acc)}
/* sections */
section{padding:84px 0}
section.alt{background:var(--panel)}
.sec-head{margin-bottom:46px}
.sec-head .tag{color:var(--acc);font-size:13px;letter-spacing:.4em;margin-bottom:12px}
.sec-head h2{font-size:clamp(26px,3vw,38px)}
.sec-head p{color:var(--mut);margin-top:10px;max-width:720px}
.grid{display:grid;gap:26px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
/* cards */
.card{background:var(--panel2);border:1px solid var(--line);border-radius:3px;overflow:hidden;transition:transform .25s,border-color .25s;display:block}
.card:hover{transform:translateY(-4px);border-color:rgba(201,160,106,.5)}
.card .ph{aspect-ratio:16/10;overflow:hidden;background:#0e1013}
.card .ph img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.card:hover .ph img{transform:scale(1.05)}
.card .tx{padding:20px 22px 24px}
.card .tx .loc{color:var(--acc);font-size:12.5px;letter-spacing:.15em}
.card .tx h3{font-size:18px;margin:6px 0 8px;line-height:1.5}
.card .tx p{color:var(--mut);font-size:14px;line-height:1.7}
.card .vtag{position:absolute;margin:12px;background:rgba(0,0,0,.55);color:#fff;font-size:12px;padding:3px 10px;border-radius:2px;backdrop-filter:blur(4px)}
.card{position:relative}
.mini{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:18px}
.mini .card .tx{padding:14px 16px 18px}
.mini .card .tx h3{font-size:15.5px;margin:4px 0 2px}
.mini .card .ph{aspect-ratio:16/11}
/* feature list */
.feat{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.feat .f{background:var(--panel2);border:1px solid var(--line);border-radius:3px;padding:30px 28px}
.feat .f .no{font-family:var(--serif);color:var(--acc);font-size:15px;letter-spacing:.3em;margin-bottom:14px}
.feat .f h3{font-size:19px;margin-bottom:10px}
.feat .f p{color:var(--mut);font-size:14.5px}
/* about */
.about-grid{display:grid;grid-template-columns:320px 1fr;gap:56px;align-items:center}
.about-grid img{border-radius:4px;border:1px solid var(--line)}
.about-grid .quote{font-family:var(--serif);font-size:21px;color:var(--acc);margin-top:20px;line-height:1.6}
.about-grid p{color:#cfc9be;margin-bottom:14px}
/* steps */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;counter-reset:st}
.steps .s{border-left:2px solid var(--acc2);padding:6px 0 6px 18px}
.steps .s .no{color:var(--acc);font-size:12.5px;letter-spacing:.2em}
.steps .s h4{font-size:16.5px;margin:4px 0 6px;font-weight:600}
.steps .s p{color:var(--mut);font-size:13.5px;line-height:1.7}
/* faq */
.faq details{border-bottom:1px solid var(--line);padding:20px 4px}
.faq summary{cursor:pointer;font-size:17px;font-family:var(--serif);list-style:none;display:flex;justify-content:space-between;align-items:center;gap:18px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:'+';color:var(--acc);font-size:22px;flex-shrink:0}
.faq details[open] summary::after{content:'−'}
.faq details p{color:var(--mut);margin-top:12px;font-size:15px}
/* article pages */
.crumbs{color:var(--dim);font-size:13px;padding:26px 0 0}
.crumbs a{color:var(--dim)}
.crumbs a:hover{color:var(--acc)}
.page-head{padding:34px 0 44px;border-bottom:1px solid var(--line);margin-bottom:48px}
.page-head h1{font-size:clamp(26px,3.4vw,40px);line-height:1.3}
.page-head .meta{color:var(--acc);font-size:13.5px;letter-spacing:.15em;margin-top:14px}
.article{max-width:820px}
.article p{margin-bottom:20px;color:#d5cfc4;font-size:16.5px}
.article h2{font-size:23px;margin:44px 0 18px;color:var(--ink)}
.article ul{margin:0 0 20px 20px;color:#d5cfc4}
.article li{margin-bottom:8px}
.gal{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin:36px 0}
.gal img{border-radius:3px;width:100%;cursor:zoom-in;background:#0e1013}
.gal .wide{grid-column:1/-1}
.vwrap{background:#000;border-radius:3px;overflow:hidden;margin:26px 0}
.vwrap video{width:100%;display:block}
.vlabel{color:var(--mut);font-size:13.5px;margin:-16px 0 26px;letter-spacing:.1em}
.rel{border-top:1px solid var(--line);margin-top:60px;padding-top:40px}
/* contact */
.contact-box{display:grid;grid-template-columns:1fr 1fr;gap:40px;background:var(--panel2);border:1px solid var(--line);border-radius:4px;padding:48px}
.contact-box .big{font-family:var(--serif);font-size:clamp(28px,3.6vw,44px);color:var(--acc);letter-spacing:.04em}
.contact-box .lab{color:var(--dim);font-size:13px;letter-spacing:.3em;margin-bottom:10px}
.contact-box p{color:#cfc9be;margin-top:6px}
/* footer */
footer{border-top:1px solid var(--line);margin-top:40px;background:#101216}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding:56px 0 40px}
footer h4{font-size:15px;color:var(--ink);margin-bottom:14px;letter-spacing:.1em}
footer p,footer li{color:var(--mut);font-size:14px;line-height:2}
footer ul{list-style:none}
footer a:hover{color:var(--acc)}
.fbar{border-top:1px solid var(--line);padding:18px 0;color:var(--dim);font-size:12.5px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}
/* lightbox */
#lb{position:fixed;inset:0;background:rgba(8,9,11,.94);display:none;align-items:center;justify-content:center;z-index:99;cursor:zoom-out}
#lb img{max-width:92vw;max-height:92vh}
#lb.on{display:flex}
/* ---------- 动态交互层 ---------- */
/* hero 轮播 */
.hero .slide{position:absolute;inset:0;opacity:0;transition:opacity 1.1s ease}
.hero .slide.on{opacity:1}
.hero .slide img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:brightness(.5) saturate(.92)}
.hero .slide .inner{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;justify-content:center}
.hero .dots{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:5}
.hero .dots button{width:34px;height:4px;border:none;background:rgba(255,255,255,.28);cursor:pointer;border-radius:2px;transition:.3s}
.hero .dots button.on{background:var(--acc)}
.hero .arr{position:absolute;top:50%;transform:translateY(-50%);z-index:5;background:rgba(0,0,0,.25);border:1px solid rgba(255,255,255,.2);color:#fff;width:44px;height:44px;border-radius:50%;font-size:18px;cursor:pointer;transition:.2s}
.hero .arr:hover{background:rgba(201,160,106,.85);border-color:transparent}
.hero .arr.l{left:22px}.hero .arr.r{right:22px}
/* 滚动渐显 */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s ease,transform .8s ease}
.reveal.in{opacity:1;transform:none}
/* 案例筛选 */
.chips{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:34px}
.chips button{background:var(--panel2);border:1px solid var(--line);color:var(--mut);padding:8px 20px;border-radius:20px;font-size:14px;cursor:pointer;transition:.2s}
.chips button:hover{border-color:var(--acc2);color:var(--ink)}
.chips button.on{background:var(--acc);border-color:var(--acc);color:#14161a}
.card.hide{display:none}
/* 返回顶部 */
#top{position:fixed;right:22px;bottom:104px;z-index:60;width:42px;height:42px;border-radius:50%;background:var(--panel2);border:1px solid var(--line);color:var(--acc);font-size:17px;cursor:pointer;opacity:0;pointer-events:none;transition:.3s}
#top.show{opacity:1;pointer-events:auto}
#top:hover{background:var(--acc);color:#14161a}
/* 冻结报价条（对标华浔底部通栏） */
.qbar{position:fixed;left:0;right:0;bottom:0;z-index:70;background:linear-gradient(180deg,#1d2126,#16191d);border-top:2px solid var(--acc2);box-shadow:0 -6px 24px rgba(0,0,0,.45)}
.qin{display:flex;align-items:center;gap:14px;height:72px}
.qbadge{flex-shrink:0;background:var(--acc);color:#14161a;font-family:var(--serif);font-weight:700;font-size:14px;line-height:1.25;text-align:center;padding:8px 10px;border-radius:3px;letter-spacing:.08em}
.qbar form{display:flex;gap:10px;flex:1;min-width:0}
.qbar input{background:#0f1114;border:1px solid var(--line);color:var(--ink);padding:10px 14px;font-size:14px;border-radius:2px;width:130px;outline:none;transition:border .2s}
.qbar input:focus{border-color:var(--acc)}
.qbar input.shake{border-color:#d05c4a;animation:shake .3s}
@keyframes shake{25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}
.qbar button{background:var(--acc);color:#14161a;border:none;padding:11px 26px;font-size:15px;font-weight:600;border-radius:2px;cursor:pointer;letter-spacing:.06em;white-space:nowrap;transition:.2s}
.qbar button:hover{background:#dcb87e}
.qbar button:disabled{opacity:.55;cursor:default}
.qhot{flex-shrink:0;color:var(--mut);font-size:13.5px;white-space:nowrap}
.qhot a{color:var(--acc);font-weight:700;font-size:17px;letter-spacing:.03em}
body{padding-bottom:72px}
#toast{position:fixed;top:84px;left:50%;transform:translateX(-50%) translateY(-16px);z-index:90;background:#223026;border:1px solid #3f6d4f;color:#b8e6c5;padding:12px 26px;border-radius:3px;font-size:14.5px;opacity:0;pointer-events:none;transition:.35s}
#toast.err{background:#33221f;border-color:#7a4034;color:#f0c0b4}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
/* 移动端报价条：折叠成按钮，点开浮层 */
.qfab{display:none}
.qsheet{display:none}
@media(max-width:820px){
 .qbar form,.qbar .qhot{display:none}
 .qin{height:60px}
 body{padding-bottom:60px}
 .qfab{display:block;margin-left:auto;background:var(--acc);color:#14161a;border:none;padding:9px 20px;font-size:14px;font-weight:600;border-radius:3px}
 .qsheet{position:fixed;inset:0;z-index:80;background:rgba(8,9,11,.6)}
 .qsheet .box{position:absolute;left:12px;right:12px;bottom:74px;background:var(--panel2);border:1px solid var(--line);border-radius:4px;padding:22px}
 .qsheet.open{display:block}
 .qsheet input{display:block;width:100%;background:#0f1114;border:1px solid var(--line);color:var(--ink);padding:12px 14px;font-size:15px;border-radius:2px;margin-bottom:12px;outline:none}
 .qsheet input:focus{border-color:var(--acc)}
 .qsheet button.w{width:100%;background:var(--acc);color:#14161a;border:none;padding:13px;font-size:16px;font-weight:600;border-radius:2px}
 .qsheet .x{position:absolute;top:8px;right:14px;color:var(--dim);font-size:22px;background:none;border:none;cursor:pointer}
}
@media(max-width:900px){
 .g3,.feat{grid-template-columns:1fr 1fr}
 .steps{grid-template-columns:repeat(2,1fr)}
 .about-grid{grid-template-columns:1fr;gap:30px}
 .contact-box{grid-template-columns:1fr;padding:34px 26px}
 .fgrid{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
 #navbtn{display:block}
 .topbar{height:64px}
 .brand b{font-size:18px}
 .slogan{display:none}
 .navbar{border:0;background:none}
 .navtel{padding:6px 12px;font-size:13.5px}
 .navlist{display:none;position:absolute;top:64px;left:0;right:0;background:var(--panel);flex-direction:column;justify-content:flex-start;padding:8px 0;border-bottom:1px solid var(--line);max-height:calc(100vh - 64px);overflow-y:auto}
 .navlist.open{display:flex}
 .navlist>li>a{display:flex;height:auto;padding:13px 26px;letter-spacing:.02em;justify-content:space-between;align-items:center}
 .navlist>li>a::after{display:none}
 .navlist .caret{float:none;margin:0;opacity:.6}
 .navlist .sub{position:static;opacity:1;visibility:visible;transform:none;border:none;box-shadow:none;background:rgba(255,255,255,.02);padding:2px 0 8px;display:none;min-width:0}
 .navlist>li::after{content:none}
 .navlist li.open .sub{display:block}
 .navlist li.open .caret{transform:rotate(180deg)}
 .navlist .sub a{padding:10px 26px 10px 38px;font-size:14px}
 .navlist .sub .sub-t{display:none}
 .g3,.g2,.feat{grid-template-columns:1fr}
 .gal{grid-template-columns:1fr}
 .fgrid{grid-template-columns:1fr}
 section{padding:60px 0}
 .hero h1{font-size:29px}
 .hero .kicker{letter-spacing:.28em;font-size:11px}
 .hero .arr{display:none}
}
/* 文章 */
.acats{display:flex;flex-wrap:wrap;gap:10px;margin:26px 0 8px}
.acats a{font-size:14px;padding:7px 16px;border:1px solid var(--line);border-radius:99px;color:var(--mut);transition:.2s}
.acats a:hover{border-color:var(--acc);color:var(--acc)}
.agrid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:26px}
.agrid a{display:block;border:1px solid var(--line);padding:24px 22px;transition:.25s;background:var(--panel)}
.agrid a:hover{border-color:var(--acc);transform:translateY(-3px)}
.agrid .acat{font-size:12px;color:var(--acc);letter-spacing:.12em}
.agrid h3{font-size:17px;margin:10px 0 8px;line-height:1.5}
.agrid p{font-size:13.5px;color:var(--mut);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.agrid .adate{font-size:12px;color:var(--mut);margin-top:12px;display:block}
.art{max-width:820px;margin:0 auto}
.art h1{font-size:clamp(26px,3.4vw,38px);line-height:1.4;margin:14px 0 10px}
.art .meta{color:var(--mut);font-size:13.5px;margin-bottom:34px;padding-bottom:22px;border-bottom:1px solid var(--line)}
.art .meta b{color:var(--acc);font-weight:500}
.art h2{font-size:21px;margin:42px 0 16px;padding-left:14px;border-left:3px solid var(--acc);line-height:1.4}
.art p{line-height:1.95;font-size:16px;color:#cfcbc2;margin:0 0 20px;text-align:justify}
.art p a,.art li a{color:var(--acc);text-decoration:underline;text-underline-offset:4px;text-decoration-color:rgba(201,160,106,.4)}
.art strong{color:#e8e3d8;font-weight:600}
.art ul{margin:0 0 20px;padding-left:4px;list-style:none}
.art li{line-height:1.9;font-size:15.5px;color:#cfcbc2;padding-left:20px;position:relative;margin-bottom:6px}
.art li:before{content:'';position:absolute;left:2px;top:13px;width:6px;height:6px;background:var(--acc);border-radius:1px}
.sign{margin-top:46px;padding:22px 26px;border:1px solid var(--line);background:var(--panel);font-size:14.5px;color:var(--mut);line-height:1.8}
.sign b{color:var(--acc);font-weight:500}
.artnav{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:34px}
.artnav a{border:1px solid var(--line);padding:16px 18px;font-size:14px;color:var(--mut);transition:.2s;line-height:1.6}
.artnav a:hover{border-color:var(--acc);color:var(--acc)}
.artnav span{display:block;font-size:12px;color:var(--mut);opacity:.7;margin-bottom:6px}
@media(max-width:900px){.agrid{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.agrid{grid-template-columns:1fr}.artnav{grid-template-columns:1fr}.art p{font-size:15px}}