/* ===== 星梦曜科技 官网静态原型 ===== */
:root{
  --brand:#3E3EFF;
  --brand-hover:#2F2FE4;
  --brand-soft:rgba(62,62,255,.08);
  --bg:#F7F8FA;
  --text:#1F2430;
  --text-sub:#5C6370;
  --text-light:#8A90A0;
  --line:#ECEEF4;
  --radius:16px;
  --shadow:0 6px 24px rgba(31,36,48,.06);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);color:var(--text);
  -webkit-font-smoothing:antialiased;font-size:14px;line-height:1.6;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
ul{list-style:none}
.container{width:1200px;max-width:92%;margin:0 auto}
.btn{display:inline-block;padding:10px 24px;border-radius:999px;font-size:14px;transition:all .2s;cursor:pointer;border:none}
.btn-brand{background:var(--brand);color:#fff}
.btn-brand:hover{background:var(--brand-hover)}
.btn-outline{border:1px solid var(--brand);color:var(--brand);background:#fff}
.btn-outline:hover{background:var(--brand);color:#fff}

/* ===== 顶部导航 ===== */
.header{position:sticky;top:0;z-index:200;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;height:62px;position:relative}
.logo{display:flex;align-items:center;gap:12px;margin-right:44px;flex:0 0 auto}
.logo-img{height:42px;width:auto;display:block;flex:0 0 auto}
.logo .slogan{font-size:12px;color:var(--text-light);border-left:1px solid var(--line);padding-left:12px}
.nav{display:flex;align-items:center;gap:32px;flex:1}
.nav > a,.nav > .nav-item > a{font-size:15px;color:var(--text-sub);transition:color .2s;display:flex;align-items:center;gap:4px}
.nav > a:hover,.nav > a.active,.nav > .nav-item:hover > a{color:var(--brand)}
.nav .caret{font-size:11px;transition:transform .25s;display:inline-block}
.nav .nav-item.open .caret{transform:rotate(180deg)}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.header-actions .btn-login{border:1px solid var(--brand);color:var(--brand);padding:7px 18px;border-radius:999px;font-size:13px;transition:all .2s;background:#fff}
.header-actions .btn-login:hover{background:var(--brand);color:#fff}
.header-actions .btn-cta{background:var(--brand);color:#fff;padding:7px 18px;border-radius:999px;font-size:13px;transition:all .2s}
.header-actions .btn-cta:hover{background:var(--brand-hover)}

/* ===== 全宽下拉菜单（阿里妈妈风格） ===== */
.mega-menu{
  position:absolute;top:62px;left:0;right:0;background:#fff;
  box-shadow:0 16px 48px rgba(31,36,48,.14);border-top:1px solid var(--line);
  opacity:0;visibility:hidden;transform:translateY(-10px);transition:all .28s ease;z-index:190;
}
.mega-menu.open{opacity:1;visibility:visible;transform:translateY(0)}
.mega-inner{width:1200px;max-width:92%;margin:0 auto;display:grid;grid-template-columns:290px 1fr;gap:48px;padding:38px 0 44px;position:relative}
.mega-close{
  position:absolute;top:16px;right:8px;width:32px;height:32px;border-radius:50%;border:none;
  background:var(--bg);color:var(--text-sub);font-size:16px;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center;
}
.mega-close:hover{background:var(--brand-soft);color:var(--brand)}
.mega-intro{border-right:1px solid var(--line);padding-right:40px}
.mega-intro h3{font-size:24px;font-weight:700;margin-bottom:14px}
.mega-intro p{font-size:13px;color:var(--text-sub);line-height:1.9}
.mega-intro .mega-link{display:inline-block;margin-top:22px;color:var(--brand);font-size:13px}
.mega-intro .mega-link:hover{text-decoration:underline}
.mega-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:34px}
.mega-cols.cols-4{grid-template-columns:repeat(4,1fr)}
@media (max-width:1100px){.mega-cols.cols-4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.mega-cols,.mega-cols.cols-4{grid-template-columns:1fr}}
.mega-col h4{font-size:13px;font-weight:700;color:var(--text);letter-spacing:1px;margin-bottom:18px;display:flex;align-items:center;gap:8px}
.mega-col h4 .en{font-size:11px;color:var(--text-light);font-weight:400}
.mega-col ul li{margin-bottom:20px}
.mega-col ul li:last-child{margin-bottom:0}
.mega-col ul li a{display:block;padding:8px 10px;border-radius:10px;transition:all .2s}
.mega-col ul li a:hover{background:var(--brand-soft)}
.mega-col ul li strong{display:block;font-size:15px;font-weight:600;color:var(--text);margin-bottom:4px}
.mega-col ul li a:hover strong{color:var(--brand)}
.mega-col ul li span{font-size:12px;color:var(--text-light);line-height:1.5}
/* 技术服务下拉 · 二级栏目直达卡片（用户后台新增二级栏目后自动展示） */
.mega-svc{display:block;background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:16px 18px;transition:all .22s;height:100%}
.mega-svc:hover{background:var(--brand-soft);border-color:rgba(62,62,255,.4);transform:translateY(-2px)}
.mega-svc h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:6px}
.mega-svc:hover h4{color:var(--brand)}
.mega-svc p{font-size:12px;color:var(--text-light);line-height:1.6;margin-bottom:10px;min-height:36px}
.mega-svc span{font-size:12px;color:var(--brand);font-weight:600}

/* ===== 主视觉 ===== */
.hero{background:linear-gradient(135deg,#EEF3FF 0%,#F2EEFF 55%,#F9F3FF 100%);padding:34px 0 40px}
.hero-grid{display:grid;grid-template-columns:1.86fr 1fr;gap:26px;align-items:stretch}
.carousel{position:relative;border-radius:18px;overflow:hidden;box-shadow:var(--shadow);height:400px;background:#0E1233}
.carousel .track{display:flex;height:100%;transition:transform .55s ease}
.carousel .slide{flex:0 0 100%;height:100%;position:relative}
.carousel .slide img{width:100%;height:100%;object-fit:cover}
.carousel .slide .cap{position:absolute;left:0;top:0;width:62%;height:100%;padding:54px 50px;display:flex;flex-direction:column;justify-content:center;color:#fff}
.carousel .slide .cap .eyebrow{font-size:12px;letter-spacing:3px;color:rgba(255,255,255,.8);margin-bottom:12px}
.carousel .slide .cap h2{font-size:32px;font-weight:800;line-height:1.35;margin-bottom:16px}
.carousel .slide .cap p{font-size:14px;color:rgba(255,255,255,.88);line-height:1.9;max-width:440px}
.carousel .slide .cap .hero-btn{display:inline-block;margin-top:26px;background:#fff;color:#161A3E;padding:11px 28px;border-radius:999px;font-size:14px;font-weight:600;transition:all .2s}
.carousel .slide .cap .hero-btn:hover{background:var(--brand);color:#fff}
.carousel .arrow{position:absolute;top:50%;transform:translateY(-50%);width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,.85);border:none;cursor:pointer;font-size:18px;color:#333;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 10px rgba(0,0,0,.15);z-index:5;transition:background .2s}
.carousel .arrow:hover{background:#fff}
.carousel .arrow.prev{left:14px}
.carousel .arrow.next{right:14px}
.carousel .dots{position:absolute;left:50%;bottom:16px;transform:translateX(-50%);display:flex;gap:8px;z-index:5}
.carousel .dots span{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.6);cursor:pointer;transition:all .25s}
.carousel .dots span.on{background:#fff;width:22px;border-radius:6px}

/* 热门资讯卡片 */
.news-card{background:#fff;border-radius:18px;box-shadow:var(--shadow);padding:22px 22px 12px;display:flex;flex-direction:column}
.news-card .nc-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.news-card .nc-head h3{font-size:18px;font-weight:600}
.news-card .nc-head a{font-size:13px;color:var(--text-light)}
.news-card .nc-head a:hover{color:var(--brand)}
.news-list{flex:1}
.news-list li{display:flex;align-items:flex-start;gap:10px;padding:13px 8px;border-bottom:1px dashed var(--line);cursor:pointer;transition:background .2s;border-radius:8px}
.news-list li:hover{background:var(--brand-soft)}
.news-list li:last-child{border-bottom:none}
.news-list .tag{flex:0 0 auto;margin-top:2px;font-size:12px;line-height:1.4;color:#fff;padding:1px 7px;border-radius:4px}
.news-list .tag.blog{background:linear-gradient(90deg,#5B6CFF,#7B5BFF)}
.news-list .tag.trend{background:linear-gradient(90deg,#3EC0C8,#3E8BFF)}
.news-list .tag.case{background:linear-gradient(90deg,#F58B4C,#F0524C)}
.news-list .txt{font-size:14px;color:var(--text-sub);line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-list li:hover .txt{color:var(--brand)}

/* ===== 通用区块 ===== */
.section{padding:64px 0}
.sec-head{text-align:center;position:relative;z-index:2}
.sec-head .eyebrow{display:inline-block;font-size:12px;letter-spacing:3px;color:var(--brand);font-weight:600;margin-bottom:12px}
.sec-head h2{font-size:32px;font-weight:700;letter-spacing:1px}
.sec-head .sub{margin-top:12px;font-size:15px;color:var(--text-sub);max-width:720px;margin-left:auto;margin-right:auto}

/* ===== 已上线产品 ===== */
.products{background:linear-gradient(180deg,#EEF2FF 0%,#F5F1FF 60%,#FBF9FF 100%);padding:64px 0 74px;position:relative;overflow:hidden}
.products::before,.products::after{content:"";position:absolute;border-radius:50%;filter:blur(80px);opacity:.5;pointer-events:none}
.products::before{width:420px;height:420px;background:rgba(96,110,255,.18);top:-120px;right:-80px}
.products::after{width:380px;height:380px;background:rgba(120,96,255,.14);bottom:-100px;left:-80px}
/* 产品循环轮播（数据驱动） */
.prod-carousel{position:relative;margin-top:40px;z-index:2}
.prod-viewport{overflow:hidden;position:relative}
.prod-track{display:flex;gap:22px;transition:transform .55s cubic-bezier(.4,0,.2,1);will-change:transform}
.prod-track.no-anim{transition:none}
.p-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:6;width:42px;height:42px;border-radius:50%;border:none;background:#fff;box-shadow:0 4px 16px rgba(31,36,48,.15);color:#333;font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s}
.p-arrow:hover{background:var(--brand);color:#fff}
.p-arrow.prev{left:-18px}
.p-arrow.next{right:-18px}
.p-dots{display:flex;justify-content:center;gap:8px;margin-top:26px}
.p-dots span{width:8px;height:8px;border-radius:50%;background:#C9CDD9;cursor:pointer;transition:all .25s}
.p-dots span.on{background:var(--brand);width:22px;border-radius:6px}
.prod-card{flex:0 0 auto;background:#fff;border-radius:18px;overflow:hidden;box-shadow:var(--shadow);transition:all .28s;display:flex;flex-direction:column}
.prod-card:hover{transform:translateY(-6px);box-shadow:0 16px 40px rgba(31,36,48,.13)}
.prod-card .p-img{position:relative;aspect-ratio:4/3;overflow:hidden;background:#F0F2FA}
.prod-card .p-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.prod-card:hover .p-img img{transform:scale(1.05)}
.prod-card .p-badge{position:absolute;top:12px;left:12px;background:rgba(20,24,50,.65);color:#fff;font-size:11px;padding:3px 10px;border-radius:999px}
.prod-card .p-body{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1}
.prod-card .p-body h3{font-size:17px;font-weight:700;margin-bottom:4px}
.prod-card .p-body .p-platform{font-size:11px;color:var(--text-light);margin-bottom:8px}
.prod-card .p-body p{font-size:13px;color:var(--text-sub);line-height:1.7;flex:1}
.prod-card .p-body .p-link{display:inline-block;margin-top:14px;color:var(--brand);font-size:13px}
.prod-card .p-body .p-link:hover{text-decoration:underline}

/* ===== 技术服务 ===== */
.services{background:#fff;padding:64px 0 74px}
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:40px}
.svc-item{display:flex;gap:16px;align-items:flex-start;padding:22px;border:1px solid var(--line);border-radius:16px;transition:all .25s;cursor:pointer}
.svc-item:hover{border-color:var(--brand);box-shadow:0 10px 28px rgba(62,62,255,.08)}
.svc-item .s-icon{flex:0 0 46px;width:46px;height:46px;border-radius:12px;background:var(--brand-soft);display:flex;align-items:center;justify-content:center;font-size:22px}
.svc-item h4{font-size:15px;font-weight:600;margin-bottom:6px}
.svc-item p{font-size:12.5px;color:var(--text-light);line-height:1.7}

/* ===== 资讯洞察 ===== */
.insights{background:var(--bg);padding:64px 0 74px}
.art-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:40px}
.art-card{background:#fff;border-radius:16px;overflow:hidden;box-shadow:var(--shadow);transition:all .25s;display:flex;flex-direction:column}
.art-card:hover{transform:translateY(-5px);box-shadow:0 14px 36px rgba(31,36,48,.12)}
.art-card .a-img{aspect-ratio:16/10;overflow:hidden}
.art-card .a-img img{width:100%;height:100%;object-fit:cover}
.art-card .a-body{padding:16px 16px 18px;display:flex;flex-direction:column;flex:1}
.art-card .a-meta{display:flex;align-items:center;gap:8px;font-size:11px;color:var(--text-light);margin-bottom:8px}
.art-card .a-meta .tag{color:#fff;padding:1px 7px;border-radius:4px;font-size:11px}
.art-card .a-body h4{font-size:14px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:10px}
.art-card .a-body .a-foot{margin-top:auto;font-size:11px;color:var(--text-light);display:flex;justify-content:space-between}

/* ===== 案例中心 ===== */
.cases{background:#fff;padding:64px 0 74px}
.case-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:40px}
/* 首页案例区：强制单排4列（用ID提高优先级，覆盖 cases.css 的同名 .case-grid 2列规则） */
#cases .case-grid{grid-template-columns:repeat(4,1fr)}
@media (max-width:1100px){#cases .case-grid{grid-template-columns:repeat(4,1fr)}}
@media (max-width:640px){#cases .case-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:420px){#cases .case-grid{grid-template-columns:1fr}}
.case-card{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:all .25s;display:flex;flex-direction:column}
.case-card:hover{transform:translateY(-6px);box-shadow:0 14px 36px rgba(31,36,48,.12)}
.case-card .c-img{position:relative;aspect-ratio:2/1;overflow:hidden}
.case-card .c-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.case-card:hover .c-img img{transform:scale(1.05)}
.case-card .c-cat{position:absolute;top:12px;left:12px;background:rgba(255,255,255,.9);color:var(--brand);font-size:11px;padding:3px 10px;border-radius:999px;font-weight:600}
.case-card .c-body{padding:16px 16px 18px;display:flex;flex-direction:column;flex:1}
.case-card .c-body h4{font-size:15px;font-weight:600;line-height:1.5;margin-bottom:8px}
.case-card .c-body p{font-size:12.5px;color:var(--text-light);line-height:1.7;flex:1}
.case-card .c-body .c-link{display:inline-block;margin-top:12px;color:var(--brand);font-size:13px}
.case-card .c-body .c-link:hover{text-decoration:underline}

/* ===== 关于我们 ===== */
.about{background:linear-gradient(180deg,#EEF2FF 0%,#F7F6FF 100%);padding:64px 0 74px}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin-top:40px;align-items:start}
.about-left h3{font-size:22px;font-weight:700;margin-bottom:16px}
.about-left p{font-size:14px;color:var(--text-sub);line-height:2}
.about-left .cap-list{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.about-left .cap-list li{display:flex;gap:14px;align-items:flex-start}
.about-left .cap-list .c-ic{flex:0 0 40px;width:40px;height:40px;border-radius:10px;background:#fff;box-shadow:var(--shadow);display:flex;align-items:center;justify-content:center;font-size:18px}
.about-left .cap-list strong{display:block;font-size:14px}
.about-left .cap-list span{font-size:12.5px;color:var(--text-light)}
.about-right{background:#fff;border-radius:18px;box-shadow:var(--shadow);padding:28px}
.about-right h4{font-size:16px;font-weight:700;margin-bottom:18px}
.timeline{display:flex;flex-wrap:wrap;gap:10px}
.timeline li{flex:1 1 31%;background:var(--bg);border-radius:10px;padding:10px 12px;font-size:12px;color:var(--text-sub)}
.timeline li .tl-date{display:block;font-weight:700;color:var(--brand);font-size:13px;margin-bottom:2px}
.contact-card{margin-top:24px;background:var(--brand-soft);border-radius:14px;padding:18px 20px}
.contact-card p{font-size:13px;color:var(--text-sub);line-height:1.9}
.contact-card p strong{color:var(--text)}

/* ===== CTA ===== */
.cta{position:relative;background:linear-gradient(135deg,#161A3E 0%,#2B2F6E 55%,#3E3EFF 130%);padding:70px 0 62px;overflow:hidden;text-align:center;color:#fff}
.cta .bubble{position:absolute;border-radius:50%;opacity:.35;pointer-events:none}
.cta .bubble.b1{width:340px;height:340px;background:rgba(120,130,255,.6);left:-90px;top:-90px}
.cta .bubble.b2{width:300px;height:300px;background:rgba(90,170,255,.4);right:-70px;bottom:-100px}
.cta .bubble.b3{width:120px;height:120px;background:rgba(255,255,255,.15);left:22%;bottom:8%}
.cta h2{font-size:36px;font-weight:800;letter-spacing:2px;position:relative;z-index:2}
.cta p{position:relative;z-index:2;margin-top:14px;font-size:14px;color:rgba(255,255,255,.8)}
.cta .cta-btns{display:flex;justify-content:center;gap:16px;margin-top:32px;position:relative;z-index:2}
.cta .btn-white{background:#fff;color:#161A3E;padding:13px 40px;border-radius:999px;font-size:15px;font-weight:600;transition:all .2s}
.cta .btn-white:hover{background:var(--brand);color:#fff}
.cta .btn-ghost{border:1px solid rgba(255,255,255,.6);color:#fff;padding:13px 40px;border-radius:999px;font-size:15px;transition:all .2s}
.cta .btn-ghost:hover{background:rgba(255,255,255,.15)}

/* ===== 页脚 ===== */
.footer{background:#F2F4F8;padding:46px 0 34px}
.footer-top{display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:24px;margin-bottom:28px}
.footer-brand{max-width:360px}
.footer-logo{height:38px;width:auto;display:block;margin-bottom:8px}
.footer-brand p{font-size:12.5px;color:var(--text-light);line-height:1.9}
.qr-group{display:flex;gap:22px}
.qr-item{display:flex;align-items:center;gap:10px}
.qr-box{width:76px;height:76px;background:#fff;border-radius:8px;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px rgba(0,0,0,.06)}
.qr-box .qr-img{width:64px;height:64px;object-fit:contain;border-radius:4px}
.qr-box svg{width:60px;height:60px}
.qr-item .qr-txt p:first-child{font-size:13px;font-weight:600;color:var(--text)}
.qr-item .qr-txt p:last-child{font-size:11px;color:var(--text-light);margin-top:2px}
.f-links{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding:26px 0;border-top:1px solid var(--line)}
.f-links h5{font-size:13px;font-weight:600;color:var(--text);margin-bottom:12px}
.f-links ul li{margin-bottom:8px}
.f-links ul li a{font-size:12.5px;color:var(--text-light)}
.f-links ul li a:hover{color:var(--brand)}
.f-copy{font-size:12px;color:var(--text-light);line-height:2;border-top:1px solid var(--line);padding-top:20px}

/* ===== 悬浮按钮 ===== */
.float-rail{position:fixed;right:22px;bottom:90px;display:flex;flex-direction:column;gap:10px;z-index:300}
.float-rail .fbtn{width:44px;height:44px;border-radius:12px;background:#fff;box-shadow:0 4px 16px rgba(0,0,0,.12);display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:10px;color:var(--text-sub);cursor:pointer;transition:all .2s;border:none}
.float-rail .fbtn .ic{font-size:18px;line-height:1}
.float-rail .fbtn:hover{background:var(--brand);color:#fff}

/* ===== 响应式 ===== */
@media (max-width:1100px){
  .art-grid{grid-template-columns:repeat(2,1fr)}
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .hero-grid{grid-template-columns:1fr}
  .carousel{height:340px}
  .about-grid{grid-template-columns:1fr}
  .mega-cols{grid-template-columns:1fr;gap:20px}
  .mega-inner{grid-template-columns:1fr;gap:28px}
  .mega-intro{border-right:none;border-bottom:1px solid var(--line);padding-right:0;padding-bottom:20px}
  .nav{gap:20px}
}
@media (max-width:640px){
  .nav{display:none}
  .art-grid,.case-grid,.svc-grid{grid-template-columns:1fr}
  .p-arrow.prev{left:8px}
  .p-arrow.next{right:8px}
  .header-actions .btn-cta{display:none}
  /* 手机端轮播：只显示标题和按钮，隐藏摘要，全宽铺满更友好 */
  .carousel .slide .cap{width:100%;padding:34px 22px;align-items:flex-start}
  .carousel .slide .cap p{display:none}
  .carousel .slide .cap h2{font-size:22px;margin-bottom:0}
  .carousel .slide .cap .hero-btn{margin-top:18px}
}

/* ===== 已上线产品 · 列表页网格（productlist） ===== */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:36px}
.prod-grid .prod-card{width:100%;min-width:0}
@media (max-width:1100px){.prod-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.prod-grid{grid-template-columns:1fr}}


/* ===== 横向溢出兜底防护 ===== */
html,body{overflow-x:hidden}

/* ===== 移动端汉堡菜单（640px 以下） ===== */
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px;margin-left:auto;flex:0 0 auto}
.nav-toggle span{width:22px;height:2px;background:var(--text);border-radius:2px;transition:all .25s;display:block}
.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)}
.mobile-nav{position:fixed;top:0;right:0;bottom:0;width:86%;max-width:340px;background:#fff;z-index:400;box-shadow:-10px 0 40px rgba(31,36,48,.15);transform:translateX(105%);transition:transform .32s ease;display:flex;flex-direction:column;overflow-y:auto}
.mobile-nav.open{transform:translateX(0)}
.mnav-head{display:flex;justify-content:space-between;align-items:center;padding:18px 20px;border-bottom:1px solid var(--line)}
.mnav-head span{font-size:16px;font-weight:800}
.mnav-close{width:34px;height:34px;border-radius:50%;border:none;background:var(--bg);font-size:20px;color:var(--text-sub);cursor:pointer}
.mnav-body{padding:12px 0 30px}
.mnav-link{display:flex;align-items:center;gap:6px;padding:15px 22px;font-size:16px;color:var(--text);border-bottom:1px solid var(--line)}
.mnav-link:hover{color:var(--brand)}
.mnav-caret{font-size:11px;color:var(--text-light);transition:transform .25s;margin-left:auto}
.mnav-item.open>.mnav-link .mnav-caret{transform:rotate(180deg)}
.mnav-item.open>.mnav-link{color:var(--brand)}
.mnav-sub{max-height:0;overflow:hidden;transition:max-height .3s ease;background:var(--bg)}
.mnav-item.open>.mnav-sub{max-height:640px}
.mnav-sub a{display:block;padding:12px 34px;font-size:14px;color:var(--text-sub);border-bottom:1px solid var(--line)}
.mnav-sub a:hover{color:var(--brand)}
.mnav-actions{display:flex;flex-direction:column;gap:12px;padding:22px}
.mnav-actions .btn-login,.mnav-actions .btn-cta{display:flex;justify-content:center;padding:12px;border-radius:999px;font-size:14px}
@media (max-width:640px){
  .nav-toggle{display:flex}
  .header-actions{display:none}
  body.nav-open{overflow:hidden}
}