/* roulang page: index */
:root{
  --blue:#2A5BD7;
  --blue-dark:#1F49B8;
  --navy:#14296B;
  --blue-light:#EAF0FE;
  --cyan:#2FB8C6;
  --cyan-light:#E4F7F9;
  --cyan-deep:#1B7F8B;
  --amber:#F0A32F;
  --amber-dark:#DB8F1B;
  --bg:#F5F7FC;
  --panel:#F0F4FB;
  --card:#FFFFFF;
  --text:#1B2333;
  --text-2:#5C6B87;
  --text-3:#8A97AE;
  --line:#E3E9F5;
  --line-strong:#CFDCF7;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:16px;
  --sh-1:0 1px 2px rgba(21,42,94,.06);
  --sh-card:0 1px 2px rgba(21,42,94,.06), 0 10px 28px rgba(21,42,94,.08);
  --sh-hover:0 2px 4px rgba(21,42,94,.08), 0 16px 36px rgba(21,42,94,.12);
  --sec-pad:88px;
  --star:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cg fill='%232A5BD7' fill-opacity='0.55'%3E%3Ccircle cx='14' cy='22' r='1.3'/%3E%3Ccircle cx='62' cy='12' r='1'/%3E%3Ccircle cx='112' cy='30' r='1.5'/%3E%3Ccircle cx='146' cy='70' r='1'/%3E%3Ccircle cx='34' cy='86' r='1.2'/%3E%3Ccircle cx='88' cy='66' r='1'/%3E%3Ccircle cx='130' cy='118' r='1.4'/%3E%3Ccircle cx='54' cy='140' r='1'/%3E%3Ccircle cx='100' cy='150' r='1.2'/%3E%3Ccircle cx='20' cy='122' r='1'/%3E%3C/g%3E%3C/svg%3E");
  --star-dark:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cg fill='%238FB2FF' fill-opacity='0.5'%3E%3Ccircle cx='18' cy='26' r='1.2'/%3E%3Ccircle cx='70' cy='14' r='1'/%3E%3Ccircle cx='120' cy='38' r='1.4'/%3E%3Ccircle cx='150' cy='78' r='1'/%3E%3Ccircle cx='40' cy='92' r='1.1'/%3E%3Ccircle cx='94' cy='72' r='1'/%3E%3Ccircle cx='136' cy='124' r='1.3'/%3E%3Ccircle cx='58' cy='146' r='1'/%3E%3Ccircle cx='104' cy='152' r='1.1'/%3E%3C/g%3E%3C/svg%3E");
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.75;color:var(--text);background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease}
p{margin:0 0 1em}
h1,h2,h3,h4,h5,h6{margin:0;font-family:inherit;font-weight:700;color:var(--navy);line-height:1.25;letter-spacing:-.01em}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
.section{padding-top:var(--sec-pad);padding-bottom:var(--sec-pad);position:relative}
.section--panel{background:var(--panel)}
.section--white{background:#fff}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:44px}
.sec-head--center{flex-direction:column;align-items:center;text-align:center}
.sec-title{font-size:clamp(24px,2.6vw,32px)}
.sec-sub{margin-top:10px;color:var(--text-2);font-size:16px;max-width:640px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--blue);background:var(--blue-light);border-radius:999px;padding:5px 14px;margin-bottom:16px}
.eyebrow--cyan{color:var(--cyan-deep);background:var(--cyan-light)}
.sec-link{font-size:14px;font-weight:600;color:var(--blue);white-space:nowrap}
.sec-link:hover{color:var(--blue-dark)}

/* 网格 */
.grid-x{display:flex;flex-wrap:wrap;margin-left:-12px;margin-right:-12px}
.grid-x>.cell{padding-left:12px;padding-right:12px;min-width:0}
.grid-x.grid-gap-lg{margin-left:-16px;margin-right:-16px}
.grid-x.grid-gap-lg>.cell{padding-left:16px;padding-right:16px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;line-height:1;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn svg{width:18px;height:18px;flex:none}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 6px 16px rgba(42,91,215,.22)}
.btn-primary:hover{background:var(--blue-dark);transform:translateY(-1px);box-shadow:0 10px 22px rgba(42,91,215,.26)}
.btn-ghost{background:#fff;color:var(--blue);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--blue);background:var(--blue-light)}
.btn-amber{background:var(--amber);color:#3A2600}
.btn-amber:hover{background:var(--amber-dark);color:#2A1B00}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:9px}
.btn-lg{height:52px;padding:0 28px;font-size:16px}
.btn-block{width:100%}
.btn-quiet{background:transparent;color:var(--text-2);font-weight:500}
.btn-quiet:hover{color:var(--blue)}

/* 徽章 */
.badge{display:inline-flex;align-items:center;height:25px;padding:0 11px;border-radius:999px;font-size:12.5px;font-weight:600;background:var(--blue-light);color:var(--blue);letter-spacing:.01em}
.badge--cyan{background:var(--cyan-light);color:var(--cyan-deep)}
.badge--line{background:#fff;color:var(--text-2);border:1px solid var(--line)}

/* 导航 */
.site-header{position:sticky;top:0;z-index:120;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(21,42,94,.06)}
.nav-inner{display:flex;align-items:center;gap:22px;height:72px}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand-mark{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,#3A6CE8,#14296B);display:grid;place-items:center;color:#fff;box-shadow:0 6px 14px rgba(20,41,107,.22)}
.brand-mark svg{width:21px;height:21px}
.brand-text{display:flex;flex-direction:column;line-height:1.18}
.brand-text strong{font-size:16.5px;color:var(--navy);letter-spacing:.01em}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--text-3);letter-spacing:.08em}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{padding:9px 13px;border-radius:9px;font-size:15px;font-weight:500;color:var(--text-2)}
.nav-link:hover{color:var(--blue);background:var(--blue-light)}
.nav-link.is-active{color:var(--blue);background:var(--blue-light);box-shadow:inset 0 -3px 0 var(--blue)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;cursor:pointer}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--navy);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--navy)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.mobile-drawer{position:fixed;inset:60px 0 0;background:#fff;z-index:110;transform:translateY(-12px);opacity:0;visibility:hidden;transition:opacity .22s ease,transform .22s ease,visibility .22s;overflow-y:auto}
.mobile-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.drawer-nav{display:flex;flex-direction:column;padding:16px 18px 8px}
.drawer-nav a{padding:15px 6px;font-size:16px;color:var(--text);border-bottom:1px solid var(--line);font-weight:500}
.drawer-nav a.is-active{color:var(--blue)}
.drawer-foot{padding:18px;position:sticky;bottom:0;background:#fff;border-top:1px solid var(--line)}

/* Hero */
.hero{position:relative;background:linear-gradient(180deg,#FFFFFF 0%,#F5F7FC 100%);padding:68px 0 84px;overflow:hidden}
.hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:200px;background-image:var(--star);background-repeat:repeat;opacity:.06;pointer-events:none}
.hero-grid{display:flex;flex-wrap:wrap;align-items:center;gap:44px;position:relative;z-index:2}
.hero-copy{flex:1 1 420px;min-width:300px}
.hero-media{flex:1 1 520px;min-width:300px}
.hero h1{font-size:clamp(30px,4.2vw,50px);line-height:1.2;letter-spacing:-.02em;margin-bottom:18px}
.hero h1 .hl{color:var(--blue)}
.hero-sub{font-size:17px;color:var(--text-2);max-width:560px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px}
.hero-trust{display:flex;flex-wrap:wrap;gap:12px 26px;padding-top:22px;border-top:1px solid var(--line)}
.trust-item{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2)}
.trust-item svg{width:17px;height:17px;color:var(--cyan)}
.trust-item b{color:var(--navy);font-weight:700}
.hero-figure{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-card);background:var(--blue-light)}
.hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-float{position:absolute;right:18px;bottom:18px;background:rgba(255,255,255,.92);backdrop-filter:blur(6px);border:1px solid var(--line-strong);border-radius:12px;padding:12px 16px;box-shadow:0 8px 22px rgba(21,42,94,.12)}
.hero-float .num{font-size:22px;font-weight:700;color:var(--navy);line-height:1.1}
.hero-float .lbl{font-size:12.5px;color:var(--text-2);margin-top:2px}

/* 卡片通用 */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;height:100%}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--line-strong)}
.card-pad{padding:26px}
.icon-tile{width:48px;height:48px;border-radius:13px;background:var(--blue-light);color:var(--blue);display:grid;place-items:center;margin-bottom:16px}
.icon-tile svg{width:24px;height:24px}
.icon-tile--cyan{background:var(--cyan-light);color:var(--cyan-deep)}
.icon-tile--amber{background:#FDF1DC;color:#A96B09}
.card h3{font-size:20px;margin-bottom:10px}
.card p{color:var(--text-2);font-size:15.5px;margin-bottom:0}
.tick-list{margin-top:16px;display:flex;flex-direction:column;gap:9px}
.tick-list li{display:flex;gap:9px;font-size:14.5px;color:var(--text-2);line-height:1.6}
.tick-list svg{width:17px;height:17px;color:var(--cyan);flex:none;margin-top:4px}

/* 产品价值 */
.value-main{display:flex;flex-direction:column;justify-content:space-between;gap:22px}
.value-main .v-top{display:flex;gap:18px;align-items:flex-start}
.value-figure{border-radius:12px;overflow:hidden;border:1px solid var(--line);margin-top:18px}
.value-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.value-side{display:flex;flex-direction:column;gap:24px;height:100%}
.value-side .card{height:auto}
.value-side .card:first-child{margin-right:22px}
.value-side .card:last-child{margin-left:22px}
.metric-row{display:flex;gap:26px;flex-wrap:wrap;margin-top:22px}
.metric{min-width:120px}
.metric .num{font-size:26px;font-weight:700;color:var(--navy);line-height:1.15}
.metric .lbl{font-size:13.5px;color:var(--text-3);margin-top:4px}

/* 截图轮播 */
.rail-wrap{position:relative}
.rail{display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:14px;scrollbar-width:none}
.rail::-webkit-scrollbar{display:none}
.rail-card{flex:0 0 clamp(260px,32%,380px);scroll-snap-align:start;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh-1);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--line-strong)}
.rail-card img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--blue-light)}
.rail-body{padding:18px 20px 22px}
.rail-body h3{font-size:18px;margin-bottom:8px}
.rail-body p{font-size:14.5px;color:var(--text-2);margin:0}
.rail-ctrl{display:flex;align-items:center;gap:12px;margin-top:20px}
.rail-btn{width:42px;height:42px;border-radius:50%;border:1px solid var(--line-strong);background:#fff;color:var(--blue);display:grid;place-items:center;cursor:pointer;transition:background-color .2s ease,border-color .2s ease}
.rail-btn:hover{background:var(--blue-light);border-color:var(--blue)}
.rail-btn svg{width:18px;height:18px}
.dots{display:flex;gap:8px;margin-left:6px}
.dots button{width:9px;height:9px;border-radius:50%;border:0;padding:0;background:#C9D5EC;cursor:pointer;transition:width .2s ease,background-color .2s ease}
.dots button.is-on{width:26px;border-radius:999px;background:var(--blue)}

/* 系统要求 */
.spec-grid{display:flex;flex-wrap:wrap;gap:0 48px}
.spec-col{flex:1 1 420px;min-width:280px}
.spec-list{margin:0}
.spec-item{display:flex;gap:18px;align-items:flex-start;padding:20px 0;border-bottom:1px solid var(--line)}
.spec-item:first-child{padding-top:6px}
.spec-item dt{flex:0 0 118px;display:flex;align-items:center;gap:9px;font-size:15px;font-weight:600;color:var(--navy)}
.spec-item dt svg{width:18px;height:18px;color:var(--cyan);flex:none}
.spec-item dd{margin:0;font-size:15px;color:var(--text-2);line-height:1.7}
.spec-note{margin-top:26px;background:var(--blue-light);border-radius:12px;padding:16px 20px;font-size:14.5px;color:var(--navy);display:flex;gap:10px;align-items:flex-start}
.spec-note svg{width:18px;height:18px;flex:none;margin-top:4px;color:var(--blue)}

/* 评价墙 */
.rev-col{display:flex;flex-direction:column;gap:24px}
.rev-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh-1);padding:22px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.rev-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--line-strong)}
.rev-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{width:42px;height:42px;border-radius:50%;background:var(--blue-light);color:var(--blue);display:grid;place-items:center;font-weight:700;font-size:15px;flex:none}
.avatar--cyan{background:var(--cyan-light);color:var(--cyan-deep)}
.rev-name{font-size:15px;font-weight:600;color:var(--navy)}
.rev-role{font-size:12.5px;color:var(--text-3)}
.stars{display:flex;gap:3px;margin-bottom:10px}
.stars svg{width:15px;height:15px;color:var(--amber)}
.rev-card p{font-size:15px;color:var(--text-2);margin:0;line-height:1.8}
.rev-quote{background:var(--panel);border-left:3px solid var(--blue);border-radius:10px;padding:14px 16px;margin-top:16px;font-size:14.5px;color:var(--text-2)}

/* 资讯列表 */
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh-1);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;height:100%}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--line-strong)}
.news-link{display:flex;flex-direction:column;height:100%}
.news-cover{overflow:hidden;background:var(--blue-light)}
.news-cover img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .4s ease}
.news-card:hover .news-cover img{transform:scale(1.04)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.news-body .badge{align-self:flex-start;margin-bottom:12px}
.news-title{font-size:18px;line-height:1.45;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s ease}
.news-card:hover .news-title{color:var(--blue)}
.news-sum{font-size:14px;color:var(--text-2);line-height:1.7;margin-bottom:18px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3)}
.news-foot .more{color:var(--blue);font-weight:600}
.empty-state{grid-column:1/-1;width:100%;text-align:center;background:#fff;border:1px dashed var(--line-strong);border-radius:var(--r-md);padding:52px 24px}
.empty-state .icon-tile{margin:0 auto 16px}
.empty-state h3{font-size:19px;margin-bottom:8px}
.empty-state p{color:var(--text-2);margin-bottom:20px}

/* FAQ */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:14px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}
.faq-item.is-open{border-color:var(--line-strong);box-shadow:var(--sh-card)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 22px;background:transparent;border:0;cursor:pointer;text-align:left;font-size:17px;font-weight:600;color:var(--navy);line-height:1.5;position:relative}
.faq-item.is-open .faq-q::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;background:var(--blue);border-radius:0 3px 3px 0}
.faq-sign{flex:none;width:24px;height:24px;border-radius:50%;background:var(--blue-light);color:var(--blue);display:grid;place-items:center;font-size:16px;line-height:1;font-weight:600}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a-inner{padding:0 22px 22px;font-size:15px;color:var(--text-2);line-height:1.85}
.faq-a-inner a{color:var(--blue);border-bottom:1px dashed var(--blue)}
.faq-a-inner a:hover{border-bottom-style:solid}

/* 下载 CTA */
.dl-panel{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:52px 48px;position:relative;overflow:hidden}
.dl-panel::after{content:"";position:absolute;inset:0;background-image:var(--star);background-repeat:repeat;opacity:.05;pointer-events:none}
.dl-inner{position:relative;z-index:2;text-align:center;max-width:760px;margin:0 auto}
.dl-inner h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:12px}
.dl-inner .dl-sub{color:var(--text-2);font-size:16px;margin-bottom:28px}
.dl-btns{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-bottom:30px}
.dl-meta{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:20px 34px}
.qr-box{width:112px;height:112px;border-radius:12px;border:1px dashed var(--line-strong);background:#fff;display:grid;place-items:center;color:var(--text-3);font-size:12.5px;text-align:center;padding:8px;line-height:1.5}
.qr-box svg{width:30px;height:30px;color:var(--blue);margin:0 auto 6px;display:block}
.dl-note{text-align:left;font-size:14px;color:var(--text-2)}
.dl-note strong{color:var(--navy);display:block;font-size:15px;margin-bottom:6px}

/* 页脚 */
.site-footer{position:relative;background:#0E1633;color:rgba(255,255,255,.72);padding:66px 0 0;overflow:hidden}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:180px;background-image:var(--star-dark);background-repeat:repeat;opacity:.06;pointer-events:none}
.footer-grid{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:40px 32px;padding-bottom:44px}
.footer-brand{flex:1 1 260px;min-width:240px}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text em{color:rgba(255,255,255,.5)}
.footer-desc{margin:18px 0 20px;font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.66);max-width:300px}
.socials{display:flex;gap:10px}
.socials a{width:38px;height:38px;border-radius:10px;border:1px solid rgba(255,255,255,.16);display:grid;place-items:center;color:rgba(255,255,255,.75);transition:background-color .2s ease,color .2s ease,border-color .2s ease}
.socials a:hover{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.34)}
.socials svg{width:18px;height:18px}
.footer-col{flex:0 1 180px;min-width:150px}
.footer-col h4{color:#fff;font-size:15.5px;margin-bottom:16px;letter-spacing:.02em}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:#fff}
.footer-col .plain{font-size:14.5px;color:rgba(255,255,255,.6)}
.footer-bottom{position:relative;z-index:2;border-top:1px solid rgba(255,255,255,.12);padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13.5px;color:rgba(255,255,255,.55)}
.footer-bottom a{color:rgba(255,255,255,.55)}
.footer-bottom a:hover{color:#fff}

/* 响应式 */
@media screen and (max-width:1023px){
  :root{--sec-pad:64px}
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .nav-inner{height:64px;gap:14px}
  .nav-inner .brand-text strong{font-size:15.5px}
  .brand-text em{font-size:10.5px;letter-spacing:.05em}
  .value-side .card:first-child{margin-right:0}
  .value-side .card:last-child{margin-left:0}
  .rev-col{transform:none !important;margin-top:0 !important}
}
@media screen and (max-width:767px){
  .container{padding-left:18px;padding-right:18px}
  .hero{padding:44px 0 56px}
  .hero-sub{font-size:16px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px}
  .hero-float{right:12px;bottom:12px;padding:10px 13px}
  .hero-float .num{font-size:18px}
  .dl-panel{padding:36px 20px;border-radius:16px}
  .dl-meta{flex-direction:column;align-items:center}
  .dl-note{text-align:center}
  .rail-card{flex:0 0 82%}
  .spec-item{flex-direction:column;gap:6px}
  .spec-item dt{flex:none}
  .footer-grid{gap:32px 24px}
  .nav-actions .btn-ghost{display:none}
}
@media screen and (max-width:520px){
  body{font-size:15.5px}
  .hero h1{font-size:29px}
  .sec-title{font-size:23px}
  .brand-text em{display:none}
  .hero-trust{gap:10px 18px}
  .footer-bottom{flex-direction:column;gap:8px}
}

/* roulang page: article */
:root{
  --brand:#2A5BD7;
  --brand-hover:#1F49B8;
  --brand-deep:#14296B;
  --brand-soft:#EAF0FE;
  --cyan:#2FB8C6;
  --cyan-soft:#E3F7F9;
  --cyan-deep:#17727B;
  --amber:#F0A32F;
  --bg:#F5F7FC;
  --card:#FFFFFF;
  --panel:#F0F4FB;
  --text:#1B2333;
  --muted:#5C6B87;
  --weak:#8A97AE;
  --line:#E3E9F5;
  --line-strong:#CFDCF7;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(21,42,94,.06), 0 10px 28px rgba(21,42,94,.08);
  --shadow-hover:0 2px 4px rgba(21,42,94,.08), 0 16px 36px rgba(21,42,94,.12);
  --font:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --container:1200px;
  --section-y:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;color:var(--brand-deep);letter-spacing:.2px}
p{margin:0}
button{font-family:inherit;cursor:pointer;border:0;background:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.starfield{
  background-image:
    radial-gradient(rgba(42,91,215,.10) 1px, transparent 1.3px),
    radial-gradient(rgba(47,184,198,.09) 1px, transparent 1.3px);
  background-size:120px 120px, 170px 170px;
  background-position:0 0, 62px 44px;
}
.section{padding:var(--section-y) 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px}
.section-head h2{font-size:32px}
.section-head p{color:var(--muted);font-size:15px;margin-top:8px}
.link-more{color:var(--brand);font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:6px}
.link-more:hover{color:var(--brand-hover);gap:10px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease-out,background-color .18s ease-out,border-color .18s ease-out,color .18s ease-out,box-shadow .18s ease-out;
}
.btn svg{width:18px;height:18px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(42,91,215,.22)}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px)}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--line-strong)}
.btn-outline:hover{border-color:var(--brand);background:var(--brand-soft)}
.btn-amber{background:var(--amber);color:#1B2333;box-shadow:0 6px 16px rgba(240,163,47,.26)}
.btn-amber:hover{background:#DE941F;transform:translateY(-1px)}
.btn-lg{height:52px;padding:0 26px;font-size:16px}
.btn-block{width:100%}

/* ---------- 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:999px;font-size:12.5px;font-weight:600;line-height:1;
  background:var(--brand-soft);color:var(--brand);
}
.badge-cyan{background:var(--cyan-soft);color:var(--cyan-deep)}
.badge-amber{background:#FDF1DE;color:#9A6512}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(21,42,94,.06)}
.header-inner{
  max-width:var(--container);margin:0 auto;padding:0 24px;
  height:72px;display:flex;align-items:center;gap:28px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:0 0 auto;
  background:linear-gradient(140deg,#2A5BD7,#14296B);
  display:inline-flex;align-items:center;justify-content:center;color:#fff;
  box-shadow:0 6px 14px rgba(42,91,215,.28);
}
.brand-mark svg{width:21px;height:21px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16.5px;color:var(--brand-deep);font-weight:700}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--weak);letter-spacing:.4px}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:12px}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:#33405C;
  padding:9px 12px;border-radius:8px;
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.is-active{color:var(--brand);background:var(--brand-soft)}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:3px;
  border-radius:2px;background:var(--brand);
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.text-cta{color:var(--brand);font-weight:600;font-size:15px;padding:8px 4px;border-bottom:1px dashed transparent}
.text-cta:hover{border-bottom-color:var(--brand)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  align-items:center;justify-content:center;color:var(--brand-deep);background:#fff;
}
.nav-toggle svg{width:22px;height:22px}
.drawer{display:none}

/* ---------- 面包屑 ---------- */
.crumb-bar{
  background:#fff;border-bottom:1px solid var(--line);
}
.crumb-inner{
  max-width:var(--container);margin:0 auto;padding:14px 24px;
  font-size:14px;color:var(--muted);display:flex;flex-wrap:wrap;align-items:center;gap:6px;
}
.crumb-inner a{color:var(--muted)}
.crumb-inner a:hover{color:var(--brand)}
.crumb-sep{color:#C3CCDE}
.crumb-current{color:var(--weak);max-width:60%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;background:#fff;border-bottom:1px solid var(--line);
  padding:56px 0 48px;overflow:hidden;
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.6;
  background-image:
    radial-gradient(rgba(42,91,215,.10) 1px, transparent 1.3px),
    radial-gradient(rgba(47,184,198,.09) 1px, transparent 1.3px);
  background-size:130px 130px, 190px 190px;
  background-position:0 0, 70px 50px;
}
.article-hero .container{position:relative;z-index:1}
.article-hero h1{
  font-size:40px;line-height:1.28;margin:16px 0 18px;max-width:900px;
  overflow-wrap:break-word;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:14px;color:var(--weak);
}
.article-meta .dot{color:#C3CCDE}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}

/* ---------- 文章布局 ---------- */
.article-wrap{padding:56px 0 0}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start}
.article-main{min-width:0}
.article-content{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:44px 48px;
  font-size:17px;line-height:1.9;color:#232C3F;
  overflow-wrap:break-word;
}
.article-content > * + *{margin-top:20px}
.article-content h2{
  font-size:22px;margin-top:38px;padding-left:14px;border-left:4px solid var(--brand);
  line-height:1.5;
}
.article-content h3{font-size:19px;margin-top:28px;color:var(--brand-deep)}
.article-content h4{font-size:17px;color:var(--brand-deep)}
.article-content p{font-size:17px;line-height:1.9;color:#2B3549}
.article-content a{color:var(--brand);border-bottom:1px dashed var(--brand)}
.article-content a:hover{border-bottom-style:solid}
.article-content ul,.article-content ol{padding-left:22px;line-height:2}
.article-content ul{list-style:disc}
.article-content ol{list-style:decimal}
.article-content li{margin-top:8px}
.article-content blockquote{
  background:var(--panel);border-left:4px solid var(--brand);
  border-radius:0 12px 12px 0;padding:18px 22px;color:var(--muted);font-size:16px;
}
.article-content img{border-radius:12px;margin:24px auto}
.article-content figure{margin:26px 0}
.article-content figcaption{font-size:13px;color:var(--weak);text-align:center;margin-top:10px}
.article-content table{
  width:100%;border-collapse:collapse;background:var(--panel);border-radius:12px;
  overflow:hidden;font-size:15px;
}
.article-content th,.article-content td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left}
.article-content th{background:#E7EEFC;color:var(--brand-deep)}
.article-content pre,.article-content code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.article-content pre{
  background:#F2F5FB;border:1px solid var(--line);border-radius:12px;
  padding:18px;overflow-x:auto;font-size:14.5px;line-height:1.7;
}

/* 空状态 */
.empty-state{
  background:#fff;border:1px dashed var(--line-strong);border-radius:var(--radius);
  padding:64px 32px;text-align:center;
}
.empty-state .icon-wrap{
  width:64px;height:64px;border-radius:18px;margin:0 auto 18px;
  background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
}
.empty-state .icon-wrap svg{width:30px;height:30px}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--muted);font-size:15.5px;margin-bottom:24px}

/* 文末标签 */
.article-tags{
  margin-top:22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 24px;display:flex;flex-wrap:wrap;align-items:center;gap:10px;
}
.article-tags span{font-size:14px;color:var(--weak);margin-right:4px}
.tag-pill{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;
  background:var(--panel);color:var(--muted);font-size:13.5px;
}
.tag-pill:hover{background:var(--brand-soft);color:var(--brand)}

/* 侧栏 */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:22px 22px 20px;
}
.side-card h3{font-size:16.5px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3 svg{width:17px;height:17px;color:var(--brand)}
.side-list li + li{margin-top:4px}
.side-list a{
  display:flex;align-items:center;gap:8px;padding:9px 10px;border-radius:9px;
  font-size:14.5px;color:#3A4761;
}
.side-list a:hover{background:var(--brand-soft);color:var(--brand)}
.side-list a .arw{margin-left:auto;color:#B7C2D8;font-size:13px}
.side-meta{font-size:14px;color:var(--muted)}
.side-meta div{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid var(--line)}
.side-meta div:last-child{border-bottom:0}
.side-meta b{color:var(--brand-deep);font-weight:600}
.side-cta{
  background:var(--brand-soft);border:1px solid var(--line-strong);
}
.side-cta p{font-size:14px;color:var(--muted);margin:0 0 14px}

/* ---------- 相关推荐 ---------- */
.related{padding:64px 0 0}
.related h2{font-size:26px;margin-bottom:26px}
.card-grid{display:grid;gap:24px;grid-template-columns:repeat(3,minmax(0,1fr))}
.post-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.post-card:hover .post-title{color:var(--brand)}
.post-thumb{aspect-ratio:16/9;background:var(--brand-soft);overflow:hidden}
.post-thumb img{width:100%;height:100%;object-fit:cover}
.post-body{padding:20px 20px 18px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-title{font-size:18px;line-height:1.45;font-weight:700;color:var(--brand-deep);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-excerpt{font-size:14px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13.5px;color:var(--weak);padding-top:12px;border-top:1px solid var(--line)}
.post-foot .go{color:var(--brand);font-weight:600}

/* ---------- 返回 ---------- */
.back-row{padding:34px 0 0}
.back-btn{
  display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 22px;
  border:1px solid var(--line-strong);border-radius:var(--radius-sm);background:#fff;
  color:var(--brand);font-weight:600;font-size:15px;
}
.back-btn:hover{background:var(--brand-soft);border-color:var(--brand)}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:12px;
  box-shadow:0 1px 2px rgba(21,42,94,.05);overflow:hidden;
}
.faq-item.open{border-left:3px solid var(--brand)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:17px;font-weight:600;color:var(--brand-deep);text-align:left;
}
.faq-q .sign{flex:0 0 auto;width:22px;height:22px;color:var(--brand);font-size:20px;line-height:1;text-align:center}
.faq-a{display:none;padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--muted)}
.faq-item.open .faq-a{display:block}

/* ---------- 转化区 ---------- */
.cta-panel{
  background:var(--panel);border:1px solid var(--line-strong);border-radius:18px;
  padding:52px 44px;text-align:center;position:relative;overflow:hidden;
}
.cta-panel::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(42,91,215,.09) 1px, transparent 1.3px);
  background-size:110px 110px;
}
.cta-panel > *{position:relative;z-index:1}
.cta-panel h2{font-size:30px;margin-bottom:12px}
.cta-panel p{color:var(--muted);font-size:16px;margin-bottom:28px}
.cta-buttons{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.cta-foot{margin-top:26px;display:flex;flex-wrap:wrap;gap:22px;justify-content:center;
  font-size:13.5px;color:var(--weak)}
.cta-foot span{display:inline-flex;align-items:center;gap:6px}
.cta-foot svg{width:15px;height:15px;color:var(--cyan)}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:#0E1633;color:rgba(255,255,255,.72);
  padding:64px 0 0;margin-top:88px;overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.6;
  background-image:
    radial-gradient(rgba(255,255,255,.16) 1px, transparent 1.3px),
    radial-gradient(rgba(255,255,255,.10) 1px, transparent 1.3px);
  background-size:130px 130px, 200px 200px;
  background-position:0 0, 70px 60px;
}
.site-footer .container{position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:46px}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text em{color:rgba(255,255,255,.55)}
.footer-desc{font-size:14px;line-height:1.8;margin-top:16px;max-width:320px;color:rgba(255,255,255,.66)}
.socials{display:flex;gap:10px;margin-top:18px}
.socials a{
  width:36px;height:36px;border-radius:10px;border:1px solid rgba(255,255,255,.18);
  display:inline-flex;align-items:center;justify-content:center;color:rgba(255,255,255,.78);
}
.socials a:hover{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.4)}
.socials svg{width:18px;height:18px}
.footer-col h4{color:#fff;font-size:15.5px;margin-bottom:16px}
.footer-col li + li{margin-top:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:#fff}
.footer-dl{display:inline-flex;align-items:center;gap:8px;margin-top:14px;
  height:42px;padding:0 18px;border-radius:10px;background:var(--amber);color:#1B2333;font-weight:600;font-size:14px}
.footer-dl:hover{background:#DE941F}
.qr-box{
  margin-top:16px;width:104px;height:104px;border-radius:12px;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);display:flex;align-items:center;justify-content:center;
  color:rgba(255,255,255,.5);font-size:12px;text-align:center;padding:8px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:13.5px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.62)}
.footer-bottom a:hover{color:#fff}
.footer-links{display:flex;flex-wrap:wrap;gap:18px}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  :root{--section-y:64px}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-side{position:static;flex-direction:row;flex-wrap:wrap}
  .side-card{flex:1 1 260px}
  .article-hero h1{font-size:32px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:860px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions .btn-outline{display:none}
  .drawer{
    display:none;border-top:1px solid var(--line);background:#fff;
    padding:14px 24px 20px;
  }
  .drawer.open{display:block}
  .drawer nav{display:flex;flex-direction:column;gap:4px}
  .drawer .nav-link{padding:12px 10px}
  .drawer .nav-link.is-active::after{display:none}
  .drawer .drawer-cta{margin-top:14px;display:flex;gap:12px}
  .drawer .drawer-cta .btn{flex:1}
}
@media (max-width:767px){
  .article-content{padding:26px 20px}
  .article-content h2{font-size:20px}
  .article-content p{font-size:16px}
  .article-hero{padding:36px 0 34px}
  .article-hero h1{font-size:27px}
  .cta-panel{padding:36px 22px}
  .cta-panel h2{font-size:24px}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .crumb-current{max-width:100%;white-space:normal}
}
@media (max-width:520px){
  .container,.header-inner,.crumb-inner{padding-left:18px;padding-right:18px}
  :root{--section-y:48px}
  .brand-text strong{font-size:15px}
  .article-hero h1{font-size:24px}
  .article-meta{font-size:13px}
  .article-content h2{font-size:19px}
  .side-card{padding:18px}
  .cta-buttons .btn{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category2 */
:root{
  --brand:#2A5BD7;
  --brand-dark:#14296B;
  --brand-light:#EAF0FE;
  --brand-deep:#1F49B8;
  --teal:#2FB8C6;
  --teal-light:#E4F7F9;
  --teal-dark:#12707B;
  --amber:#F0A32F;
  --amber-dark:#D98E1C;
  --bg:#F5F7FC;
  --card:#FFFFFF;
  --panel:#F0F4FB;
  --text:#1B2333;
  --muted:#5C6B87;
  --faint:#8A97AE;
  --line:#E3E9F5;
  --line-strong:#CFDCF7;
  --danger:#D64545;
  --radius-s:10px;
  --radius-m:14px;
  --radius-l:18px;
  --shadow-s:0 1px 2px rgba(21,42,94,.06);
  --shadow-m:0 1px 2px rgba(21,42,94,.06), 0 10px 28px rgba(21,42,94,.08);
  --shadow-h:0 2px 6px rgba(21,42,94,.08), 0 16px 36px rgba(21,42,94,.12);
  --ease:200ms ease-out;
  --font:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0;line-height:1.25;font-weight:700;color:var(--brand-dark);letter-spacing:.2px;}
h1{font-size:46px;}
h2{font-size:32px;}
h3{font-size:21px;}
h4{font-size:17px;}
p{margin:0;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease);}
a:hover{color:var(--brand-deep);}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
svg{display:block;}
strong{font-weight:600;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.section{padding-top:88px;padding-bottom:88px;}
.section--tight{padding-top:64px;padding-bottom:64px;}
.section--panel{background:var(--panel);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .eyebrow{margin-bottom:14px;}
.section-head p{margin-top:14px;color:var(--muted);font-size:17px;}
.section-head--split{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;max-width:none;}
.section-head--split .section-head-text{max-width:720px;}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:26px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:600;letter-spacing:.4px;
  background:var(--teal-light);color:var(--teal-dark);
}
.eyebrow--brand{background:var(--brand-light);color:var(--brand);}
.eyebrow svg{width:14px;height:14px;}

.starfield{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180' viewBox='0 0 180 180'%3E%3Cg fill='%232A5BD7' fill-opacity='0.22'%3E%3Ccircle cx='14' cy='22' r='1.1'/%3E%3Ccircle cx='58' cy='12' r='.9'/%3E%3Ccircle cx='104' cy='36' r='1.3'/%3E%3Ccircle cx='152' cy='18' r='1'/%3E%3Ccircle cx='34' cy='74' r='1'/%3E%3Ccircle cx='86' cy='92' r='.9'/%3E%3Ccircle cx='132' cy='70' r='1.2'/%3E%3Ccircle cx='168' cy='108' r='.9'/%3E%3Ccircle cx='22' cy='132' r='1.1'/%3E%3Ccircle cx='74' cy='156' r='.9'/%3E%3Ccircle cx='118' cy='138' r='1'/%3E%3Ccircle cx='158' cy='166' r='1.2'/%3E%3C/g%3E%3C/svg%3E");
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-s);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  border:1px solid transparent;background:transparent;color:var(--brand);
  transition:transform var(--ease),background-color var(--ease),border-color var(--ease),box-shadow var(--ease),color var(--ease);
}
.btn svg{width:18px;height:18px;flex:none;}
.btn--primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-s);}
.btn--primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-m);}
.btn--ghost{background:#fff;border-color:var(--line-strong);color:var(--brand);}
.btn--ghost:hover{background:var(--brand-light);border-color:var(--brand);color:var(--brand);}
.btn--amber{background:var(--amber);color:#1B2333;box-shadow:var(--shadow-s);}
.btn--amber:hover{background:var(--amber-dark);color:#1B2333;transform:translateY(-1px);box-shadow:var(--shadow-m);}
.btn--lg{height:52px;padding:0 26px;font-size:16px;}
.btn--sm{height:40px;padding:0 16px;font-size:14px;}
.btn--block{width:100%;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--brand);
}
.btn-link svg{width:16px;height:16px;transition:transform var(--ease);}
.btn-link:hover svg{transform:translateX(3px);}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(21,42,94,.06);}
.header-inner{
  display:flex;align-items:center;gap:28px;
  height:72px;
}
.brand{display:inline-flex;align-items:center;gap:11px;flex:none;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:11px;
  background:var(--brand-light);color:var(--brand);flex:none;
  border:1px solid #D7E3FB;
}
.brand-mark svg{width:21px;height:21px;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:16px;color:var(--brand-dark);letter-spacing:.2px;}
.brand-text em{font-style:normal;font-size:12px;color:var(--faint);letter-spacing:.3px;}

.main-nav{display:flex;align-items:center;gap:26px;margin-left:auto;}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--muted);
  padding:8px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:3px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.nav-link:hover{color:var(--brand);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}

.header-actions{display:flex;align-items:center;gap:10px;flex:none;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:11px;border:1px solid var(--line);
  background:#fff;color:var(--brand-dark);margin-left:auto;
}
.nav-toggle svg{width:20px;height:20px;}

.mobile-drawer{display:none;}
.mobile-drawer.is-open{
  display:block;
  border-top:1px solid var(--line);
  background:#fff;
  padding:14px 0 20px;
}
.mobile-drawer .container{display:flex;flex-direction:column;gap:4px;}
.mobile-drawer .nav-link{padding:12px 4px;font-size:16px;border-bottom:1px solid var(--line);}
.mobile-drawer .nav-link::after{display:none;}
.mobile-drawer .nav-link.is-active{background:var(--brand-light);border-radius:10px;padding-left:12px;}
.mobile-drawer .btn{margin-top:14px;}

/* ============ 矮 Hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#F2F6FF 0%,var(--brand-light) 100%);
  border-bottom:1px solid var(--line);
  padding:52px 0 56px;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200' viewBox='0 0 200 200'%3E%3Cg fill='%232A5BD7' fill-opacity='0.16'%3E%3Ccircle cx='18' cy='26' r='1.1'/%3E%3Ccircle cx='72' cy='14' r='.9'/%3E%3Ccircle cx='124' cy='42' r='1.2'/%3E%3Ccircle cx='176' cy='22' r='.9'/%3E%3Ccircle cx='44' cy='86' r='1'/%3E%3Ccircle cx='98' cy='104' r='.9'/%3E%3Ccircle cx='148' cy='78' r='1.2'/%3E%3Ccircle cx='30' cy='150' r='1'/%3E%3Ccircle cx='86' cy='170' r='.9'/%3E%3Ccircle cx='140' cy='152' r='1.1'/%3E%3C/g%3E%3C/svg%3E");
}
.page-hero .container{position:relative;z-index:1;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--faint);margin-bottom:20px;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#C2CDE0;}
.page-hero h1{font-size:40px;max-width:18em;}
.page-hero .hero-lead{margin-top:16px;font-size:18px;color:var(--muted);max-width:640px;}
.page-hero .hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:12px;}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:12px 30px;margin-top:30px;
  padding-top:22px;border-top:1px solid rgba(42,91,215,.16);
}
.hero-meta div{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);}
.hero-meta svg{width:17px;height:17px;color:var(--brand);flex:none;}
.hero-meta b{font-variant-numeric:tabular-nums;color:var(--brand-dark);font-weight:700;}

/* ============ 图文交错双栏 ============ */
.zigzag{display:flex;flex-direction:column;}
.zig-row{
  display:grid;grid-template-columns:minmax(0,6fr) minmax(0,5fr);
  gap:56px;align-items:center;
  padding:56px 0;
  border-bottom:1px solid var(--line);
}
.zig-row:first-child{padding-top:0;}
.zig-row:last-child{border-bottom:0;padding-bottom:0;}
.zig-row.is-reverse .zig-media{order:2;}
.zig-row.is-reverse .zig-body{order:1;}
.zig-media{
  position:relative;
  border-radius:var(--radius-l);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-m);
  background:var(--panel);
  aspect-ratio:16/10;
}
.zig-media img{width:100%;height:100%;object-fit:cover;}
.zig-media .media-tag{
  position:absolute;left:16px;top:16px;
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:999px;
  background:rgba(255,255,255,.94);
  border:1px solid var(--line);
  font-size:13px;font-weight:600;color:var(--brand);
}
.zig-media .media-tag svg{width:14px;height:14px;}
.zig-body h3{margin-bottom:14px;}
.zig-body > p{color:var(--muted);font-size:16.5px;}
.zig-points{margin-top:22px;display:grid;gap:12px;}
.zig-points li{
  display:flex;gap:11px;align-items:flex-start;
  font-size:15.5px;color:var(--text);
}
.zig-points svg{width:19px;height:19px;color:var(--teal);flex:none;margin-top:4px;}
.zig-foot{margin-top:24px;display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:600;
  background:var(--brand-light);color:var(--brand);
}
.chip--teal{background:var(--teal-light);color:var(--teal-dark);}
.chip--line{background:#fff;border:1px solid var(--line);color:var(--muted);}
.chip svg{width:14px;height:14px;}

/* ============ 下载前确认（定义列表 + 指标） ============ */
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 56px;}
.check-item{
  display:flex;gap:14px;align-items:flex-start;
  padding:22px 0;border-bottom:1px solid var(--line);
}
.check-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;flex:none;
  background:var(--brand-light);color:var(--brand);
}
.check-icon svg{width:20px;height:20px;}
.check-body dt{font-size:16px;font-weight:600;color:var(--brand-dark);margin-bottom:4px;}
.check-body dd{margin:0;font-size:15px;color:var(--muted);}
.check-body dd b{font-variant-numeric:tabular-nums;color:var(--text);font-weight:600;}

/* ============ 安装步骤条 ============ */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.step-card{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-m);padding:26px 22px 24px;
  box-shadow:var(--shadow-s);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-h);border-color:var(--line-strong);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:var(--brand);color:#fff;font-size:15px;font-weight:700;
  font-variant-numeric:tabular-nums;margin-bottom:16px;
}
.step-card h4{margin-bottom:8px;}
.step-card p{font-size:14.5px;color:var(--muted);}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:900px;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:12px;
  overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item.is-open{border-color:var(--line-strong);box-shadow:var(--shadow-s);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:transparent;border:0;text-align:left;
  font-size:17px;font-weight:600;color:var(--brand-dark);line-height:1.5;
}
.faq-q:hover{color:var(--brand);}
.faq-sign{
  flex:none;display:inline-flex;align-items:center;justify-content:center;
  width:26px;height:26px;border-radius:8px;
  background:var(--brand-light);color:var(--brand);
  transition:transform var(--ease),background-color var(--ease);
}
.faq-sign svg{width:15px;height:15px;}
.faq-item.is-open .faq-sign{background:var(--brand);color:#fff;transform:rotate(180deg);}
.faq-a{display:none;padding:0 22px 22px 22px;}
.faq-item.is-open .faq-a{display:block;border-left:3px solid var(--brand);margin-left:0;}
.faq-a p{font-size:15px;line-height:1.8;color:var(--muted);}

/* ============ CTA 下载区 ============ */
.cta-panel{
  position:relative;overflow:hidden;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-l);
  box-shadow:var(--shadow-m);
  padding:56px 48px;
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,4fr);
  gap:48px;align-items:center;
}
.cta-panel::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160' viewBox='0 0 160 160'%3E%3Cg fill='%232A5BD7' fill-opacity='0.14'%3E%3Ccircle cx='16' cy='20' r='1.1'/%3E%3Ccircle cx='64' cy='40' r='.9'/%3E%3Ccircle cx='116' cy='18' r='1.2'/%3E%3Ccircle cx='146' cy='74' r='.9'/%3E%3Ccircle cx='38' cy='96' r='1'/%3E%3Ccircle cx='92' cy='124' r='.9'/%3E%3Ccircle cx='134' cy='146' r='1.1'/%3E%3C/g%3E%3C/svg%3E");
}
.cta-panel > *{position:relative;z-index:1;}
.cta-panel h2{margin-bottom:14px;}
.cta-panel .cta-lead{color:var(--muted);font-size:16.5px;max-width:34em;}
.dl-buttons{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.dl-buttons .btn{min-width:132px;}
.cta-aside{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-m);
  padding:22px;text-align:center;
}
.qr-box{
  width:132px;height:132px;margin:0 auto 14px;
  border-radius:12px;background:#fff;border:1px dashed var(--line-strong);
  display:flex;align-items:center;justify-content:center;color:var(--brand);
}
.qr-box svg{width:52px;height:52px;}
.cta-aside p{font-size:14px;color:var(--muted);}
.cta-aside .ver{
  margin-top:12px;display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand);
  background:var(--brand-light);border-radius:999px;padding:6px 14px;
  font-variant-numeric:tabular-nums;
}
.login-strip{
  margin-top:26px;display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  padding:18px 22px;border-radius:var(--radius-m);
  background:var(--brand-light);border:1px solid #D7E3FB;
}
.login-strip svg{width:20px;height:20px;color:var(--brand);flex:none;}
.login-strip p{font-size:15px;color:var(--brand-dark);flex:1 1 260px;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;overflow:hidden;
  background:#0E1633;color:rgba(255,255,255,.72);
  padding:64px 0 0;
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200' viewBox='0 0 200 200'%3E%3Cg fill='%23FFFFFF' fill-opacity='0.10'%3E%3Ccircle cx='22' cy='30' r='1.1'/%3E%3Ccircle cx='78' cy='16' r='.9'/%3E%3Ccircle cx='130' cy='46' r='1.2'/%3E%3Ccircle cx='180' cy='26' r='.9'/%3E%3Ccircle cx='48' cy='92' r='1'/%3E%3Ccircle cx='102' cy='112' r='.9'/%3E%3Ccircle cx='154' cy='84' r='1.2'/%3E%3Ccircle cx='34' cy='156' r='1'/%3E%3Ccircle cx='90' cy='176' r='.9'/%3E%3Ccircle cx='146' cy='158' r='1.1'/%3E%3C/g%3E%3C/svg%3E");
}
.site-footer .container{position:relative;z-index:1;}
.footer-grid{
  display:grid;grid-template-columns:minmax(0,4fr) minmax(0,2.4fr) minmax(0,2.8fr) minmax(0,3fr);
  gap:44px;padding-bottom:48px;
}
.footer-brand .brand-text strong{color:#fff;}
.footer-brand .brand-text em{color:rgba(255,255,255,.55);}
.footer-brand .brand-mark{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.16);color:#8FB2FF;}
.footer-desc{margin-top:18px;font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.66);max-width:30em;}
.socials{display:flex;gap:10px;margin-top:20px;}
.socials a{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:11px;
  background:rgba(255,255,255,.08);color:rgba(255,255,255,.78);
  border:1px solid rgba(255,255,255,.10);
}
.socials a:hover{background:rgba(255,255,255,.16);color:#fff;}
.socials svg{width:19px;height:19px;}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:18px;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.72);}
.footer-col a:hover{color:#fff;}
.footer-contact li{display:flex;gap:10px;font-size:14.5px;color:rgba(255,255,255,.72);}
.footer-contact svg{width:17px;height:17px;color:#8FB2FF;flex:none;margin-top:4px;}
.footer-contact .mini-qr{
  margin-top:16px;display:flex;align-items:center;gap:12px;
  padding:12px;border-radius:12px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.10);
}
.footer-contact .mini-qr span{
  width:48px;height:48px;border-radius:10px;flex:none;
  background:rgba(255,255,255,.10);
  display:inline-flex;align-items:center;justify-content:center;color:#8FB2FF;
}
.footer-contact .mini-qr svg{width:24px;height:24px;margin:0;}
.footer-contact .mini-qr p{font-size:13px;color:rgba(255,255,255,.66);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:22px 0 26px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:13.5px;color:rgba(255,255,255,.55);
}
.footer-bottom .fb-links{display:flex;flex-wrap:wrap;gap:20px;}
.footer-bottom a{color:rgba(255,255,255,.62);}
.footer-bottom a:hover{color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .footer-grid{gap:34px;}
}
@media (max-width:1024px){
  h1{font-size:38px;}
  .section{padding-top:64px;padding-bottom:64px;}
  .page-hero{padding:44px 0 48px;}
  .page-hero h1{font-size:34px;}
  .zig-row{gap:36px;padding:44px 0;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-panel{grid-template-columns:1fr;padding:44px 34px;gap:34px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px 30px;}
}
@media (max-width:900px){
  .main-nav{display:none;}
  .header-actions .btn--ghost{display:none;}
  .nav-toggle{display:inline-flex;}
  .brand-text em{display:none;}
}
@media (max-width:768px){
  .check-grid{grid-template-columns:1fr;gap:0;}
  .zig-row{grid-template-columns:1fr;gap:26px;padding:38px 0;}
  .zig-row.is-reverse .zig-media,
  .zig-row.is-reverse .zig-body{order:0;}
  .page-hero h1{font-size:31px;}
  .page-hero .hero-lead{font-size:16.5px;}
  .section-head--split{flex-direction:column;align-items:flex-start;gap:16px;}
}
@media (max-width:640px){
  .container{padding-left:18px;padding-right:18px;}
  h2{font-size:24px;}
  .section{padding-top:48px;padding-bottom:48px;}
  .section--tight{padding-top:40px;padding-bottom:40px;}
  .header-inner{height:60px;gap:14px;}
  .brand-mark{width:34px;height:34px;}
  .brand-text strong{font-size:15px;}
  .page-hero{padding:34px 0 38px;}
  .page-hero h1{font-size:27px;}
  .steps{grid-template-columns:1fr;}
  .cta-panel{padding:32px 20px;}
  .dl-buttons .btn{flex:1 1 100%;min-width:0;}
  .faq-q{font-size:16px;padding:17px 16px;}
  .faq-a{padding:0 16px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .hero-meta{gap:10px 20px;}
}

/* roulang page: category1 */
:root{
  --blue:#2A5BD7;
  --blue-dark:#14296B;
  --blue-hover:#1F49B8;
  --blue-soft:#EAF0FE;
  --cyan:#2FB8C6;
  --cyan-soft:#E4F7F9;
  --amber:#F0A32F;
  --amber-hover:#D98C18;
  --bg:#F5F7FC;
  --card:#FFFFFF;
  --panel:#F0F4FB;
  --text:#1B2333;
  --text-2:#5C6B87;
  --text-3:#8A97AE;
  --line:#E3E9F5;
  --line-2:#CFDCF7;
  --danger:#D64545;
  --r-sm:10px;
  --r:14px;
  --r-lg:16px;
  --shadow-sm:0 1px 2px rgba(21,42,94,.06),0 10px 28px rgba(21,42,94,.08);
  --shadow-md:0 2px 4px rgba(21,42,94,.06),0 14px 34px rgba(21,42,94,.12);
  --container:1200px;
  --sp-section:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;background-color:transparent}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{line-height:1.25;color:var(--blue-dark);font-weight:700}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:6px}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.section{padding:var(--sp-section) 0}
.section-head{margin-bottom:40px;max-width:760px}
.section-head h2{font-size:32px;margin-bottom:12px}
.section-head p{color:var(--text-2);font-size:16px}
.tag{
  display:inline-flex;align-items:center;height:25px;padding:0 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;background:var(--blue-soft);color:var(--blue);
}
.tag.cyan{background:var(--cyan-soft);color:#1D7B85}
.tag.amber{background:#FDF1DD;color:#9B6410}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;
  transition:all .2s ease-out;white-space:nowrap;
}
.btn svg{width:17px;height:17px;flex:0 0 17px}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 6px 16px rgba(42,91,215,.22)}
.btn-primary:hover{background:var(--blue-hover);transform:translateY(-1px)}
.btn-outline{background:#fff;color:var(--blue);border:1px solid var(--line-2)}
.btn-outline:hover{border-color:var(--blue);background:var(--blue-soft)}
.btn-amber{background:var(--amber);color:#1B2333;box-shadow:0 6px 16px rgba(240,163,47,.24)}
.btn-amber:hover{background:var(--amber-hover);transform:translateY(-1px)}
.btn-lg{height:52px;padding:0 26px;font-size:16px}
.btn-block{width:100%}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;background:#fff;
  border-bottom:1px solid var(--line);transition:box-shadow .2s ease-out;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(21,42,94,.06)}
.header-inner{display:flex;align-items:center;gap:26px;height:72px}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,#2A5BD7,#14296B);color:#fff;
}
.brand-mark svg{width:21px;height:21px}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:16.5px;font-weight:700;color:var(--blue-dark);letter-spacing:.2px}
.brand-text em{font-size:11.5px;font-style:normal;color:var(--text-3);letter-spacing:.4px}
.main-nav{display:flex;align-items:center;gap:24px;margin-left:8px;flex:1 1 auto}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);
  padding:8px 2px;white-space:nowrap;transition:color .2s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:3px;border-radius:3px;
  background:var(--blue);opacity:0;transform:scaleX(.4);transition:all .2s ease-out;
}
.nav-link:hover{color:var(--blue)}
.nav-link.is-active{color:var(--blue-dark)}
.nav-link.is-active::after{opacity:1;transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:14px;margin-left:auto;flex:0 0 auto}
.link-download{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--text-2);
  transition:color .2s ease-out;
}
.link-download svg{width:16px;height:16px}
.link-download:hover{color:var(--blue)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-sm);
  border:1px solid var(--line);align-items:center;justify-content:center;color:var(--blue-dark);
  margin-left:auto;
}
.nav-toggle svg{width:20px;height:20px}
.mobile-drawer{
  position:fixed;left:0;right:0;top:60px;bottom:0;z-index:70;background:#fff;
  padding:18px 20px 96px;display:flex;flex-direction:column;gap:4px;overflow-y:auto;
  opacity:0;transform:translateY(-10px);pointer-events:none;transition:all .22s ease-out;
}
.mobile-drawer.is-open{opacity:1;transform:none;pointer-events:auto}
.mobile-drawer .drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:15px 4px;border-bottom:1px solid var(--line);
  font-size:16px;font-weight:500;color:var(--text);
}
.mobile-drawer .drawer-link.is-active{color:var(--blue);font-weight:600}
.drawer-cta{
  position:fixed;left:0;right:0;bottom:0;padding:14px 20px 18px;background:#fff;
  border-top:1px solid var(--line);
}

/* ---------- 页面首屏 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#F2F6FF 0%,#EAF0FE 60%,#F5F7FC 100%);
  padding:56px 0 62px;
}
.page-hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:170px;pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='260' height='260' viewBox='0 0 260 260'%3E%3Cg fill='%232A5BD7' fill-opacity='0.42'%3E%3Ccircle cx='24' cy='38' r='2'/%3E%3Ccircle cx='92' cy='18' r='1.4'/%3E%3Ccircle cx='168' cy='54' r='1.8'/%3E%3Ccircle cx='226' cy='26' r='1.3'/%3E%3Ccircle cx='58' cy='112' r='1.5'/%3E%3Ccircle cx='140' cy='96' r='2'/%3E%3Ccircle cx='204' cy='132' r='1.4'/%3E%3Ccircle cx='34' cy='196' r='1.6'/%3E%3Ccircle cx='118' cy='182' r='1.3'/%3E%3Ccircle cx='196' cy='214' r='1.9'/%3E%3C/g%3E%3Cpath d='M0 200 C 70 150 150 240 260 176' fill='none' stroke='%232A5BD7' stroke-opacity='0.18' stroke-width='1.2'/%3E%3C/svg%3E");
  opacity:.8;
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--text-3);margin-bottom:18px;
}
.breadcrumb a{color:var(--text-3);transition:color .2s ease-out}
.breadcrumb a:hover{color:var(--blue)}
.breadcrumb .sep{color:#C3CDE0}
.breadcrumb .current{color:var(--text-2)}
.page-hero h1{font-size:44px;letter-spacing:-.4px;margin-bottom:16px}
.page-hero .hero-sub{font-size:18px;color:var(--text-2);max-width:620px;margin-bottom:26px}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.fact{
  display:inline-flex;align-items:center;gap:7px;height:30px;padding:0 13px;border-radius:999px;
  background:rgba(255,255,255,.82);border:1px solid var(--line-2);color:var(--text-2);font-size:13px;
}
.fact svg{width:15px;height:15px;color:var(--blue)}

/* ---------- 分类页主区：锚点 + 长列表 ---------- */
.cat-layout{display:grid;grid-template-columns:262px 1fr;gap:44px;align-items:start}
.anchor-nav{
  position:sticky;top:96px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r);padding:22px 18px;box-shadow:var(--shadow-sm);
}
.anchor-nav h2{
  font-size:13px;font-weight:600;color:var(--text-3);letter-spacing:1.2px;
  text-transform:none;margin-bottom:14px;padding-left:10px;
}
.anchor-nav ul{display:flex;flex-direction:column;gap:2px}
.anchor-nav a{
  display:flex;align-items:center;gap:9px;padding:10px 10px;border-radius:var(--r-sm);
  font-size:14.5px;color:var(--text-2);transition:all .18s ease-out;
}
.anchor-nav a i{
  width:6px;height:6px;border-radius:50%;background:#CBD6EA;flex:0 0 6px;transition:all .18s ease-out;
}
.anchor-nav a:hover{background:var(--blue-soft);color:var(--blue)}
.anchor-nav a:hover i{background:var(--blue)}
.anchor-nav a.is-current{background:var(--blue-soft);color:var(--blue-dark);font-weight:600}
.anchor-nav a.is-current i{background:var(--blue)}
.anchor-note{
  margin-top:18px;padding:14px;border-radius:var(--r-sm);background:var(--panel);
  font-size:13px;line-height:1.7;color:var(--text-3);
}
.anchor-block{
  scroll-margin-top:100px;padding-bottom:34px;margin-bottom:34px;border-bottom:1px solid var(--line);
}
.anchor-block:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
.block-head{display:flex;align-items:center;gap:12px;margin-bottom:8px}
.block-head h2{font-size:23px}
.block-sub{font-size:15px;color:var(--text-2);margin-bottom:20px}
.row-list{display:flex;flex-direction:column;gap:12px}
.row-item{
  display:grid;grid-template-columns:52px 1fr 34px;gap:16px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:18px 20px;box-shadow:0 1px 2px rgba(21,42,94,.05);
  transition:all .2s ease-out;
}
.row-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-2)}
.row-index{
  font-size:15px;font-weight:700;color:var(--blue);background:var(--blue-soft);
  height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;
}
.row-title{display:block;font-size:17px;font-weight:600;color:var(--blue-dark);margin-bottom:3px;transition:color .2s ease-out}
.row-item:hover .row-title{color:var(--blue)}
.row-desc{display:block;font-size:14px;color:var(--text-2);line-height:1.65}
.row-arrow{
  width:34px;height:34px;border-radius:50%;border:1px solid var(--line-2);
  display:flex;align-items:center;justify-content:center;color:var(--blue);
  transition:all .2s ease-out;
}
.row-arrow svg{width:15px;height:15px}
.row-item:hover .row-arrow{background:var(--blue);border-color:var(--blue);color:#fff}

/* ---------- 数据速览 ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:24px 22px;box-shadow:var(--shadow-sm);transition:all .2s ease-out;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-2)}
.stat-card .num{
  font-size:32px;font-weight:700;color:var(--blue);line-height:1.2;letter-spacing:-.5px;
  display:flex;align-items:baseline;gap:4px;
}
.stat-card .num small{font-size:15px;font-weight:600;color:var(--text-2)}
.stat-card .label{font-size:15px;font-weight:600;color:var(--blue-dark);margin:10px 0 6px}
.stat-card .desc{font-size:13.5px;color:var(--text-2);line-height:1.7}

/* ---------- 图文对照 ---------- */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center}
.split-media{position:relative}
.split-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-lg);
  border:1px solid var(--line);box-shadow:var(--shadow-sm);background:var(--panel);
}
.media-badge{
  position:absolute;right:-14px;bottom:-16px;background:rgba(255,255,255,.94);
  border:1px solid var(--line);border-radius:var(--r);padding:14px 18px;box-shadow:var(--shadow-sm);
  backdrop-filter:blur(6px);
}
.media-badge .b-num{font-size:22px;font-weight:700;color:var(--blue-dark);line-height:1.2}
.media-badge .b-txt{font-size:12.5px;color:var(--text-3);margin-top:2px}
.check-list{display:flex;flex-direction:column;gap:18px;margin-top:26px}
.check-item{display:flex;gap:13px}
.check-item .ico{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;background:var(--cyan-soft);
  color:#1D7B85;display:flex;align-items:center;justify-content:center;
}
.check-item .ico svg{width:17px;height:17px}
.check-item h3{font-size:17px;margin-bottom:4px}
.check-item p{font-size:14.5px;color:var(--text-2);line-height:1.75}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:12px;
  margin-bottom:14px;overflow:hidden;transition:all .2s ease-out;
}
.faq-item[open]{border-color:var(--line-2);box-shadow:var(--shadow-sm)}
.faq-q{
  list-style:none;cursor:pointer;padding:19px 22px;display:flex;align-items:center;gap:16px;
  justify-content:space-between;font-size:17px;font-weight:600;color:var(--blue-dark);
}
.faq-q::-webkit-details-marker{display:none}
.faq-q::after{
  content:"";width:14px;height:14px;flex:0 0 14px;
  background-image:linear-gradient(var(--blue),var(--blue)),linear-gradient(var(--blue),var(--blue));
  background-position:center,center;background-size:14px 2px,2px 14px;background-repeat:no-repeat;
}
.faq-item[open] .faq-q::after{background-size:14px 2px;background-image:linear-gradient(var(--blue),var(--blue));background-position:center;background-repeat:no-repeat}
.faq-a{
  margin:0 22px 20px;padding-left:16px;border-left:3px solid var(--blue);
  font-size:15px;line-height:1.8;color:var(--text-2);
}
.faq-a a{color:var(--blue);border-bottom:1px dashed rgba(42,91,215,.5)}
.faq-a a:hover{border-bottom-style:solid}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;border-radius:20px;
  background:linear-gradient(135deg,#EAF0FE 0%,#F0F4FB 100%);
  border:1px solid var(--line-2);padding:52px 48px;
}
.cta-panel::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.9;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='220' viewBox='0 0 300 220'%3E%3Cg fill='%232A5BD7' fill-opacity='0.35'%3E%3Ccircle cx='30' cy='40' r='1.8'/%3E%3Ccircle cx='110' cy='22' r='1.3'/%3E%3Ccircle cx='196' cy='62' r='1.6'/%3E%3Ccircle cx='266' cy='30' r='1.3'/%3E%3Ccircle cx='70' cy='140' r='1.4'/%3E%3Ccircle cx='170' cy='170' r='1.7'/%3E%3Ccircle cx='248' cy='132' r='1.3'/%3E%3C/g%3E%3C/svg%3E");
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 220px;gap:40px;align-items:center}
.cta-inner h2{font-size:31px;margin-bottom:12px}
.cta-inner p{font-size:16px;color:var(--text-2);max-width:560px;margin-bottom:24px}
.cta-btns{display:flex;flex-wrap:wrap;gap:14px}
.qr-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:18px;text-align:center;box-shadow:var(--shadow-sm);
}
.qr-card .qr{
  width:132px;height:132px;margin:0 auto 12px;border-radius:10px;background:#F7F9FE;
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--blue);
}
.qr-card .qr svg{width:96px;height:96px}
.qr-card .qr-title{font-size:14px;font-weight:600;color:var(--blue-dark)}
.qr-card .qr-meta{font-size:12.5px;color:var(--text-3);margin-top:4px}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:#0E1633;color:rgba(255,255,255,.72);
  padding:66px 0 0;margin-top:0;overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;inset:0 0 auto 0;height:190px;pointer-events:none;opacity:.9;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='280' height='200' viewBox='0 0 280 200'%3E%3Cg fill='%23FFFFFF' fill-opacity='0.5'%3E%3Ccircle cx='26' cy='34' r='1.5'/%3E%3Ccircle cx='104' cy='18' r='1.2'/%3E%3Ccircle cx='182' cy='48' r='1.6'/%3E%3Ccircle cx='252' cy='24' r='1.2'/%3E%3Ccircle cx='64' cy='116' r='1.3'/%3E%3Ccircle cx='152' cy='92' r='1.5'/%3E%3Ccircle cx='232' cy='124' r='1.2'/%3E%3C/g%3E%3Cpath d='M0 150 C 80 100 180 190 280 130' fill='none' stroke='%23FFFFFF' stroke-opacity='0.2' stroke-width='1.2'/%3E%3C/svg%3E");
  opacity:.06;
}
.site-footer .container{position:relative;z-index:2}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text em{color:rgba(255,255,255,.55)}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);margin-bottom:20px;max-width:330px}
.socials{display:flex;gap:10px}
.socials a{
  width:36px;height:36px;border-radius:10px;border:1px solid rgba(255,255,255,.18);
  display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.72);
  transition:all .2s ease-out;
}
.socials a svg{width:18px;height:18px}
.socials a:hover{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.35)}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col li{font-size:14px;line-height:1.6}
.footer-col a{color:rgba(255,255,255,.72);transition:color .2s ease-out}
.footer-col a:hover{color:#fff}
.footer-qr{
  display:flex;align-items:center;gap:12px;margin-top:18px;padding-top:18px;
  border-top:1px solid rgba(255,255,255,.12);
}
.footer-qr .qr-box{
  width:66px;height:66px;flex:0 0 66px;border-radius:10px;background:rgba(255,255,255,.94);
  display:flex;align-items:center;justify-content:center;color:#14296B;
}
.footer-qr .qr-box svg{width:52px;height:52px}
.footer-qr .qr-text{font-size:12.5px;line-height:1.7;color:rgba(255,255,255,.7)}
.footer-qr .qr-text em{font-style:normal;color:rgba(255,255,255,.48)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px 26px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .main-nav{gap:18px}
  .nav-link{font-size:14.5px}
}
@media (max-width:1024px){
  :root{--sp-section:64px}
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .cat-layout{grid-template-columns:1fr;gap:28px}
  .anchor-nav{position:static;padding:16px}
  .anchor-nav ul{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:4px}
  .anchor-nav a{
    white-space:nowrap;border:1px solid var(--line);border-radius:999px;padding:8px 14px;
  }
  .anchor-nav a i{display:none}
  .anchor-nav h2,.anchor-note{display:none}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:34px}
  .cta-inner{grid-template-columns:1fr}
  .qr-card{max-width:260px;margin:0 auto}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:768px){
  .page-hero h1{font-size:33px}
  .page-hero .hero-sub{font-size:16.5px}
  .section-head h2{font-size:24px}
  .block-head h2{font-size:20px}
  .cta-inner h2{font-size:24px}
  .cta-panel{padding:34px 24px}
  .row-item{grid-template-columns:44px 1fr 28px;gap:12px;padding:16px}
  .row-title{font-size:16px}
  .row-arrow{width:28px;height:28px}
}
@media (max-width:640px){
  :root{--sp-section:48px}
  .container{padding:0 18px}
  .header-inner{height:60px}
  .brand-text em{display:none}
  .page-hero{padding:40px 0 46px}
  .page-hero h1{font-size:30px}
  .stat-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .row-item{grid-template-columns:40px 1fr;grid-template-areas:"idx body";padding:16px}
  .row-index{grid-area:idx}
  .row-body{grid-area:body}
  .row-arrow{display:none}
  .cta-btns .btn{width:100%}
}

/* roulang page: category3 */
:root{
  --brand:#2A5BD7;
  --brand-dark:#1F49B8;
  --deep:#14296B;
  --brand-soft:#EAF0FE;
  --teal:#2FB8C6;
  --teal-soft:#E1F6F8;
  --amber:#F0A32F;
  --amber-dark:#DE921B;
  --bg:#F5F7FC;
  --card:#FFFFFF;
  --panel:#F0F4FB;
  --text:#1B2333;
  --muted:#5C6B87;
  --weak:#8A97AE;
  --line:#E3E9F5;
  --line-strong:#CFDCF7;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(21,42,94,.06), 0 10px 28px rgba(21,42,94,.08);
  --shadow-hover:0 2px 6px rgba(21,42,94,.08), 0 18px 38px rgba(21,42,94,.12);
  --ease:200ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;color:var(--deep)}
h1{font-size:48px}
h2{font-size:32px}
h3{font-size:20px}
h4{font-size:17px}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color var(--ease),opacity var(--ease)}
img{max-width:100%;display:block;border-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:16px;font-weight:600;line-height:1;white-space:nowrap;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn svg{width:18px;height:18px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(42,91,215,.24)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px)}
.btn-outline{background:#fff;color:var(--brand);border:1px solid var(--line-strong)}
.btn-outline:hover{border-color:var(--brand);background:var(--brand-soft)}
.btn-amber{background:var(--amber);color:#231803;box-shadow:0 6px 16px rgba(240,163,47,.28)}
.btn-amber:hover{background:var(--amber-dark);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:15px}
.btn-lg{height:52px;padding:0 26px;font-size:17px}
.btn-block{width:100%}

/* ---------- 标签 / 徽章 ---------- */
.badge,.tag{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:600;line-height:1;
}
.badge{background:var(--brand-soft);color:var(--brand)}
.badge-teal{background:var(--teal-soft);color:#12707C}
.badge-amber{background:#FDF1DC;color:#9A6107}
.tag{background:var(--panel);color:var(--muted);font-weight:500;font-size:12px}

/* ---------- 页头与导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(21,42,94,.06)}
.header-inner{display:flex;align-items:center;gap:28px;height:72px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;
  background:linear-gradient(140deg,#2A5BD7,#14296B);color:#fff;
}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:17px;font-weight:700;color:var(--deep);letter-spacing:.2px}
.brand-text em{font-style:normal;font-size:12px;color:var(--weak)}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:8px}
.nav-link{
  position:relative;padding:8px 12px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--muted);
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-2px;height:3px;border-radius:3px;background:var(--brand);
}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.nav-sub{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--brand);
}
.nav-sub svg{width:17px;height:17px}
.nav-sub:hover{color:var(--brand-dark)}
.nav-toggle{display:none;align-items:center;justify-content:center;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);color:var(--deep)}
.nav-toggle:hover{background:var(--panel)}
.nav-toggle svg{width:20px;height:20px}
.drawer-cta{display:none}

/* ---------- 矮 Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:54px 0 58px;
  background:linear-gradient(180deg,#EAF0FE 0%,#F6F9FF 62%,#F5F7FC 100%);
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.07;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='260' height='260' viewBox='0 0 260 260'%3E%3Cg fill='none' stroke='%232A5BD7' stroke-width='1.2'%3E%3Ccircle cx='38' cy='54' r='1.6'/%3E%3Ccircle cx='196' cy='42' r='1.3'/%3E%3Ccircle cx='132' cy='150' r='1.5'/%3E%3Ccircle cx='228' cy='206' r='1.2'/%3E%3Ccircle cx='72' cy='214' r='1.4'/%3E%3Cpath d='M12 128 Q130 48 250 138'/%3E%3C/g%3E%3C/svg%3E");
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--weak);margin-bottom:18px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#C3CDE2}
.breadcrumb .current{color:var(--deep);font-weight:600}
.hero-copy{max-width:760px}
.hero-copy .badge{margin-bottom:16px}
.hero-copy h1{font-size:48px;letter-spacing:-.5px}
.hero-desc{margin:14px 0 24px;font-size:18px;line-height:1.75;color:var(--muted);max-width:640px}

/* ---------- 区块骨架 ---------- */
.section{padding:88px 0}
.section-panel{background:var(--panel)}
.section-white{background:#fff}
.section-head{max-width:760px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;
  font-size:13px;font-weight:600;letter-spacing:1px;color:var(--teal);
}
.section-head h2{font-size:32px}
.section-head p{margin-top:14px;font-size:17px;color:var(--muted)}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.u-card{
  display:flex;flex-direction:column;
  padding:26px 24px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.u-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.card-top{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.card-icon{
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
  width:48px;height:48px;border-radius:12px;
  background:var(--brand-soft);color:var(--brand);
}
.card-icon.teal{background:var(--teal-soft);color:#12707C}
.card-icon svg{width:24px;height:24px}
.u-card h3{font-size:20px}
.point-list{margin:14px 0 18px;display:flex;flex-direction:column;gap:9px}
.point-list li{position:relative;padding-left:20px;font-size:15px;color:var(--muted);line-height:1.7}
.point-list li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;
  background:var(--brand-soft);border:1.5px solid var(--brand);
}
.link-more{
  display:inline-flex;align-items:center;gap:6px;margin-top:auto;
  font-size:15px;font-weight:600;color:var(--brand);
}
.link-more span{transition:transform var(--ease)}
.link-more:hover span{transform:translateX(4px)}
.link-more:hover{color:var(--brand-dark)}

/* ---------- 数据指标带 ---------- */
.metric-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;
}
.metric{
  padding:30px 26px;border-right:1px solid var(--line);
}
.metric:last-child{border-right:0}
.metric .value{font-size:38px;font-weight:700;color:var(--brand);line-height:1.1;letter-spacing:-1px}
.metric .value small{font-size:16px;font-weight:600;color:var(--muted);margin-left:4px;letter-spacing:0}
.metric .label{margin-top:10px;font-size:15px;font-weight:600;color:var(--deep)}
.metric .hint{margin-top:6px;font-size:13px;color:var(--weak);line-height:1.6}

/* ---------- 图文区 ---------- */
.feature-row{display:grid;grid-template-columns:6fr 6fr;gap:52px;align-items:center}
.feature-media{position:relative}
.feature-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:16px;border:1px solid var(--line);box-shadow:var(--shadow);
}
.feature-media .float-card{
  position:absolute;right:-14px;bottom:-18px;
  min-width:190px;padding:14px 18px;border-radius:12px;
  background:rgba(255,255,255,.94);backdrop-filter:blur(6px);
  border:1px solid var(--line);box-shadow:var(--shadow);
}
.feature-media .float-card b{display:block;font-size:22px;color:var(--brand);line-height:1.2}
.feature-media .float-card span{font-size:13px;color:var(--muted)}
.feature-copy h2{font-size:32px;margin-bottom:16px}
.feature-copy p{font-size:17px;color:var(--muted)}
.step-list{margin-top:24px;display:flex;flex-direction:column;gap:18px}
.step-list li{display:flex;gap:14px}
.step-num{
  flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:9px;
  background:var(--brand-soft);color:var(--brand);font-size:14px;font-weight:700;
}
.step-list b{display:block;font-size:16px;color:var(--deep);margin-bottom:2px}
.step-list p{font-size:15px;color:var(--muted);margin:0}

/* ---------- 检查清单 ---------- */
.check-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 48px}
.check-item{
  display:flex;gap:14px;padding:20px 0;border-bottom:1px solid var(--line);
}
.check-item .ic{
  flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:10px;background:var(--panel);color:var(--brand);
}
.check-item .ic svg{width:20px;height:20px}
.check-item b{display:block;font-size:16px;color:var(--deep);margin-bottom:4px}
.check-item p{margin:0;font-size:15px;color:var(--muted);line-height:1.7}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:12px;
  margin-bottom:12px;box-shadow:0 1px 2px rgba(21,42,94,.05);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item.is-open{border-left:3px solid var(--brand);box-shadow:var(--shadow)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;padding:20px 22px;text-align:left;
  font-size:17px;font-weight:600;color:var(--deep);line-height:1.5;
}
.faq-icon{position:relative;flex:0 0 auto;width:20px;height:20px}
.faq-icon i{
  position:absolute;top:50%;left:0;width:20px;height:2px;border-radius:2px;
  background:var(--brand);transform:translateY(-50%);
}
.faq-icon i.v{transform:translateY(-50%) rotate(90deg);transition:transform var(--ease),opacity var(--ease)}
.faq-item.is-open .faq-icon i.v{transform:translateY(-50%) rotate(90deg) scaleX(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms ease-out,padding 260ms ease-out;padding:0 22px}
.faq-item.is-open .faq-a{max-height:420px;padding-bottom:20px}
.faq-a p{font-size:15px;line-height:1.8;color:var(--muted);margin:0}

/* ---------- 转化区 ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  background:var(--panel);border:1px solid var(--line);border-radius:18px;
  padding:56px 48px;
}
.cta-panel::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240' viewBox='0 0 240 240'%3E%3Cg fill='none' stroke='%2314296B' stroke-width='1.2'%3E%3Ccircle cx='34' cy='48' r='1.5'/%3E%3Ccircle cx='184' cy='36' r='1.2'/%3E%3Ccircle cx='120' cy='140' r='1.4'/%3E%3Ccircle cx='212' cy='192' r='1.1'/%3E%3Cpath d='M8 120 Q120 44 232 128'/%3E%3C/g%3E%3C/svg%3E");
}
.cta-inner{position:relative;z-index:2;max-width:840px;margin:0 auto;text-align:center}
.cta-inner h2{font-size:32px}
.cta-inner > p{margin:14px auto 30px;font-size:17px;color:var(--muted);max-width:620px}
.dl-buttons{display:flex;flex-wrap:wrap;justify-content:center;gap:14px}
.dl-meta{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:22px;
  margin-top:32px;padding-top:26px;border-top:1px solid var(--line);font-size:14px;color:var(--muted);
}
.dl-meta .qr{
  display:inline-flex;align-items:center;justify-content:center;
  width:74px;height:74px;border-radius:12px;background:#fff;border:1px solid var(--line);
}
.dl-meta .qr svg{width:56px;height:56px}
.dl-meta .info{text-align:left;line-height:1.7}
.dl-meta .info b{display:block;color:var(--deep);font-size:15px}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;overflow:hidden;
  background:#0E1633;color:rgba(255,255,255,.72);
  padding:64px 0 0;margin-top:0;
}
.site-footer::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='260' height='260' viewBox='0 0 260 260'%3E%3Cg fill='none' stroke='%23FFFFFF' stroke-width='1.2'%3E%3Ccircle cx='40' cy='56' r='1.6'/%3E%3Ccircle cx='198' cy='44' r='1.3'/%3E%3Ccircle cx='130' cy='152' r='1.5'/%3E%3Ccircle cx='230' cy='208' r='1.2'/%3E%3Ccircle cx='74' cy='212' r='1.4'/%3E%3Cpath d='M14 130 Q130 50 248 140'/%3E%3C/g%3E%3C/svg%3E");
}
.site-footer .container{position:relative;z-index:2}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:48px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text em{color:rgba(255,255,255,.55)}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:320px}
.socials{display:flex;gap:10px;margin-top:18px}
.socials a{
  display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;
  border-radius:10px;border:1px solid rgba(255,255,255,.16);color:rgba(255,255,255,.72);
  transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.socials a svg{width:18px;height:18px}
.socials a:hover{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.32)}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:#fff}
.footer-contact p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);margin:0 0 14px}
.footer-qr{
  display:inline-flex;align-items:center;gap:14px;padding:12px 14px;border-radius:12px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
}
.footer-qr .code{
  display:inline-flex;align-items:center;justify-content:center;width:64px;height:64px;
  border-radius:8px;background:rgba(255,255,255,.9);
}
.footer-qr .code svg{width:50px;height:50px}
.footer-qr span{font-size:13px;line-height:1.7;color:rgba(255,255,255,.72)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  padding:22px 0;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom nav{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom a{color:rgba(255,255,255,.55)}
.footer-bottom a:hover{color:#fff}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1279px){
  h1,.hero-copy h1{font-size:44px}
}
@media screen and (max-width:1023px){
  .section{padding:64px 0}
  .page-hero{padding:44px 0 48px}
  .hero-copy h1{font-size:38px}
  h2,.section-head h2,.feature-copy h2,.cta-inner h2{font-size:26px}
  .card-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .metric-strip{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(2){border-right:0}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line)}
  .feature-row{grid-template-columns:1fr;gap:32px}
  .feature-media .float-card{right:14px;bottom:14px}
  .check-grid{grid-template-columns:1fr;gap:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-panel{padding:44px 28px}

  .nav-toggle{display:inline-flex}
  .nav-sub{display:none}
  .main-nav{
    position:fixed;top:60px;left:0;right:0;bottom:0;z-index:70;
    display:none;flex-direction:column;align-items:stretch;gap:2px;
    margin:0;padding:18px 20px 96px;overflow-y:auto;
    background:#fff;border-top:1px solid var(--line);
  }
  .main-nav.is-open{display:flex}
  .nav-link{padding:14px 14px;font-size:16px;border-radius:10px}
  .nav-link.is-active::after{display:none}
  .nav-link.is-active{background:var(--brand-soft)}
  .drawer-cta{
    display:block;position:fixed;left:0;right:0;bottom:0;
    padding:14px 20px;background:#fff;border-top:1px solid var(--line);
  }
  .header-inner{height:60px;gap:14px}
  .brand-mark{width:36px;height:36px;border-radius:10px}
  .brand-text strong{font-size:15px}
  .brand-text em{display:none}
}
@media screen and (max-width:767px){
  .section{padding:52px 0}
  .hero-copy h1{font-size:32px}
  .hero-desc{font-size:16px}
  .card-grid{grid-template-columns:1fr}
  .metric-strip{grid-template-columns:1fr}
  .metric{border-right:0;border-bottom:1px solid var(--line)}
  .metric:last-child{border-bottom:0}
  .feature-media .float-card{right:10px;bottom:10px;min-width:0;padding:10px 14px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{justify-content:flex-start}
}
@media screen and (max-width:639px){
  .container{padding:0 18px}
  .btn{height:44px;padding:0 18px;font-size:15px}
  .btn-lg{height:48px;font-size:16px}
  .hero-copy h1{font-size:30px}
  .dl-buttons .btn{width:100%}
  .faq-q{font-size:16px;padding:18px}
  .cta-panel{padding:36px 20px;border-radius:14px}
}

/* roulang page: category4 */
:root{
  --blue:#2A5BD7;
  --blue-hover:#1F49B8;
  --blue-deep:#14296B;
  --blue-soft:#EAF0FE;
  --cyan:#2FB8C6;
  --cyan-soft:#E4F7F9;
  --amber:#F0A32F;
  --amber-dark:#DE9218;
  --bg:#F5F7FC;
  --card:#FFFFFF;
  --panel:#F0F4FB;
  --text:#1B2333;
  --muted:#5C6B87;
  --dim:#8A97AE;
  --line:#E3E9F5;
  --line-strong:#CFDCF7;
  --radius-s:10px;
  --radius:14px;
  --radius-l:20px;
  --shadow:0 1px 2px rgba(21,42,94,.06), 0 10px 28px rgba(21,42,94,.08);
  --shadow-hover:0 2px 4px rgba(21,42,94,.08), 0 16px 36px rgba(21,42,94,.12);
  --ease:200ms ease-out;
}

*,*::before,*::after{box-sizing:border-box;}

html{scroll-behavior:smooth;}

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}

img{max-width:100%;display:block;height:auto;}
a{color:var(--blue);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease);}
a:hover{color:var(--blue-hover);}
ul{margin:0;padding:0;list-style:none;}
p{margin:0 0 18px;color:var(--text);}
h1,h2,h3,h4{margin:0 0 16px;color:var(--blue-deep);line-height:1.25;font-weight:700;letter-spacing:.2px;}
h1{font-size:48px;}
h2{font-size:32px;}
h3{font-size:21px;}
h4{font-size:17px;}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--panel{background:var(--panel);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head p{font-size:16px;color:var(--muted);margin:0;}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--blue);
  background:var(--blue-soft);border-radius:999px;
  padding:5px 14px;margin-bottom:16px;line-height:1.4;
}
.eyebrow.is-cyan{background:var(--cyan-soft);color:#177882;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-s);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;background:none;
  transition:transform var(--ease),background-color var(--ease),border-color var(--ease),color var(--ease),box-shadow var(--ease);
  white-space:nowrap;
}
.btn svg{width:18px;height:18px;flex:0 0 auto;}
.btn--primary{background:var(--blue);color:#fff;box-shadow:0 6px 16px rgba(42,91,215,.24);}
.btn--primary:hover{background:var(--blue-hover);color:#fff;transform:translateY(-1px);}
.btn--outline{background:#fff;border-color:var(--line-strong);color:var(--blue);}
.btn--outline:hover{border-color:var(--blue);background:var(--blue-soft);color:var(--blue-hover);}
.btn--amber{background:var(--amber);color:#231a05;box-shadow:0 6px 16px rgba(240,163,47,.28);}
.btn--amber:hover{background:var(--amber-dark);color:#231a05;transform:translateY(-1px);}
.btn--lg{height:52px;padding:0 28px;font-size:16px;}
.btn--block{width:100%;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(21,42,94,.06);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}

.brand{display:inline-flex;align-items:center;gap:12px;color:var(--blue-deep);}
.brand:hover{color:var(--blue-deep);}
.brand-mark{
  width:40px;height:40px;border-radius:12px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--blue) 0%,#4A7BEA 100%);
  color:#fff;box-shadow:0 6px 14px rgba(42,91,215,.28);
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.3px;}
.brand-text em{font-style:normal;font-size:12px;color:var(--dim);letter-spacing:.4px;}

.main-nav{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:38px;padding:0 13px;border-radius:9px;
  font-size:15px;font-weight:500;color:var(--muted);
}
.nav-link:hover{color:var(--blue);background:var(--blue-soft);}
.nav-link.is-active{color:var(--blue);background:var(--blue-soft);}
.nav-link.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:-2px;
  height:3px;border-radius:3px;background:var(--blue);
}

.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-actions .btn{height:44px;}
.nav-text-link{
  font-size:15px;font-weight:600;color:var(--blue);
  display:inline-flex;align-items:center;gap:6px;padding:0 6px;height:44px;
}
.nav-text-link svg{width:17px;height:17px;}
.nav-text-link:hover{color:var(--blue-hover);}

.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line-strong);background:#fff;
  align-items:center;justify-content:center;
}
.nav-toggle svg{width:22px;height:22px;color:var(--blue-deep);}

.mobile-drawer{
  display:none;position:fixed;left:0;right:0;top:72px;bottom:0;z-index:55;
  background:#fff;border-top:1px solid var(--line);
  padding:14px 18px 100px;overflow-y:auto;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer .nav-link{
  display:flex;height:52px;padding:0 14px;font-size:16px;border-radius:10px;margin-bottom:6px;
}
.mobile-drawer .nav-link.is-active::after{display:none;}
.drawer-foot{
  position:fixed;left:0;right:0;bottom:0;padding:12px 18px 18px;
  background:#fff;border-top:1px solid var(--line);
}

/* ---------- Page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--blue-soft);
  padding:44px 0 56px;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140' viewBox='0 0 140 140'%3E%3Cg fill='%232A5BD7' fill-opacity='0.05'%3E%3Ccircle cx='14' cy='20' r='1.5'/%3E%3Ccircle cx='70' cy='10' r='1'/%3E%3Ccircle cx='112' cy='38' r='1.7'/%3E%3Ccircle cx='34' cy='72' r='1.1'/%3E%3Ccircle cx='88' cy='84' r='1.4'/%3E%3Ccircle cx='18' cy='116' r='1.6'/%3E%3Ccircle cx='120' cy='108' r='1.1'/%3E%3Ccircle cx='56' cy='128' r='1.2'/%3E%3Cpath d='M0 132 Q42 108 84 126 T140 118' stroke='%232A5BD7' stroke-opacity='0.06' fill='none' stroke-width='1.5'/%3E%3C/g%3E%3C/svg%3E");
}
.page-hero .container{position:relative;z-index:1;}

.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:20px;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--blue);}
.breadcrumb span.sep{color:#B9C4D8;}

.page-hero h1{font-size:44px;margin-bottom:14px;}
.page-hero .hero-desc{font-size:18px;color:var(--muted);max-width:720px;margin-bottom:24px;}
.page-hero .hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}

/* ---------- Stat strip ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
  margin-top:-34px;position:relative;z-index:2;
}
.stat-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:26px 24px;
}
.stat-card .stat-num{font-size:30px;font-weight:700;color:var(--blue-deep);line-height:1.2;margin-bottom:6px;}
.stat-card .stat-label{font-size:14px;color:var(--muted);margin:0;}
.stat-card .stat-icon{
  width:40px;height:40px;border-radius:11px;background:var(--blue-soft);color:var(--blue);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;
}
.stat-card .stat-icon svg{width:20px;height:20px;}

/* ---------- Split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split--reverse .split-media{order:2;}
.split-media{
  border-radius:16px;overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow);background:var(--panel);
}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.split-body h2{margin-bottom:18px;}
.split-body p{color:var(--muted);}

.check-list{margin-top:22px;display:grid;gap:14px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:var(--text);}
.check-list .tick{
  width:22px;height:22px;flex:0 0 auto;border-radius:50%;margin-top:3px;
  background:var(--blue-soft);color:var(--blue);
  display:flex;align-items:center;justify-content:center;
}
.check-list .tick svg{width:13px;height:13px;}

/* ---------- Timeline ---------- */
.timeline{position:relative;margin-top:12px;}
.timeline::before{
  content:"";position:absolute;left:23px;top:18px;bottom:18px;width:2px;
  background:linear-gradient(180deg,#D7E2FA 0%,#C9D8F6 100%);
}
.tl-item{position:relative;padding-left:72px;padding-bottom:34px;}
.tl-item:last-child{padding-bottom:0;}
.tl-node{
  position:absolute;left:0;top:0;width:48px;height:48px;border-radius:50%;
  background:#fff;border:1px solid var(--line-strong);box-shadow:0 6px 16px rgba(21,42,94,.08);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;color:var(--blue);z-index:1;
}
.tl-item.is-key .tl-node{background:var(--blue);border-color:var(--blue);color:#fff;box-shadow:0 8px 20px rgba(42,91,215,.28);}
.tl-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:26px 26px 22px;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong);}
.tl-card h3{margin-bottom:10px;display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.tl-card p{color:var(--muted);font-size:15.5px;margin-bottom:14px;}
.tag{
  display:inline-flex;align-items:center;height:25px;padding:0 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;line-height:1;
  background:var(--blue-soft);color:var(--blue);
}
.tag--cyan{background:var(--cyan-soft);color:#177882;}
.tag--amber{background:#FDF0DA;color:#9A6508;}
.tl-meta{display:flex;flex-wrap:wrap;gap:18px;font-size:13.5px;color:var(--dim);border-top:1px solid var(--line);padding-top:14px;}
.tl-meta span{display:inline-flex;align-items:center;gap:6px;}
.tl-meta svg{width:15px;height:15px;color:var(--dim);}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:14px;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:12px;
  box-shadow:0 1px 2px rgba(21,42,94,.05);overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item.is-open{border-color:var(--line-strong);box-shadow:0 10px 26px rgba(21,42,94,.09);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:none;border:0;text-align:left;padding:20px 24px;
  font-size:17px;font-weight:600;color:var(--blue-deep);
}
.faq-q .sign{
  width:26px;height:26px;flex:0 0 auto;border-radius:50%;
  background:var(--blue-soft);color:var(--blue);
  display:flex;align-items:center;justify-content:center;
  transition:transform var(--ease),background-color var(--ease);
}
.faq-q .sign svg{width:14px;height:14px;}
.faq-item.is-open .faq-q .sign{background:var(--blue);color:#fff;transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms ease-out;border-left:3px solid transparent;}
.faq-item.is-open .faq-a{border-left-color:var(--blue);}
.faq-a p{padding:0 24px 20px 24px;margin:0;font-size:15px;line-height:1.8;color:var(--muted);}

/* ---------- Summary cards ---------- */
.summary-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:8px;}
.summary-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.summary-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong);}
.summary-card .s-icon{
  width:42px;height:42px;border-radius:12px;background:var(--cyan-soft);color:#177882;
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.summary-card .s-icon svg{width:21px;height:21px;}
.summary-card h4{margin-bottom:8px;}
.summary-card p{font-size:14.5px;color:var(--muted);margin:0;}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-l);
  padding:56px 48px;text-align:center;
}
.cta-panel::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140' viewBox='0 0 140 140'%3E%3Cg fill='%232A5BD7' fill-opacity='0.05'%3E%3Ccircle cx='20' cy='26' r='1.4'/%3E%3Ccircle cx='78' cy='14' r='1.1'/%3E%3Ccircle cx='118' cy='46' r='1.6'/%3E%3Ccircle cx='40' cy='80' r='1.2'/%3E%3Ccircle cx='96' cy='98' r='1.3'/%3E%3Ccircle cx='24' cy='120' r='1.5'/%3E%3C/g%3E%3C/svg%3E");
}
.cta-panel > *{position:relative;z-index:1;}
.cta-panel h2{margin-bottom:12px;}
.cta-panel .cta-desc{color:var(--muted);font-size:16px;max-width:620px;margin:0 auto 30px;}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-bottom:28px;}
.cta-foot{display:flex;flex-wrap:wrap;justify-content:center;gap:28px;font-size:13.5px;color:var(--dim);}
.cta-foot span{display:inline-flex;align-items:center;gap:8px;}
.cta-foot svg{width:16px;height:16px;color:var(--blue);}
.qr-box{
  width:92px;height:92px;border-radius:10px;background:#fff;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;padding:8px;
}
.qr-box svg{width:100%;height:100%;color:var(--blue-deep);opacity:.85;}

/* ---------- Footer ---------- */
.site-footer{
  position:relative;background:#0E1633;color:rgba(255,255,255,.72);
  padding:68px 0 0;margin-top:0;overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='150' height='150' viewBox='0 0 150 150'%3E%3Cg fill='%23FFFFFF' fill-opacity='0.06'%3E%3Ccircle cx='18' cy='24' r='1.5'/%3E%3Ccircle cx='74' cy='12' r='1.1'/%3E%3Ccircle cx='120' cy='42' r='1.7'/%3E%3Ccircle cx='38' cy='78' r='1.2'/%3E%3Ccircle cx='92' cy='92' r='1.4'/%3E%3Ccircle cx='20' cy='118' r='1.6'/%3E%3Ccircle cx='128' cy='112' r='1.1'/%3E%3Cpath d='M0 140 Q48 116 90 134 T150 126' stroke='%23FFFFFF' stroke-opacity='0.06' fill='none' stroke-width='1.5'/%3E%3C/g%3E%3C/svg%3E");
}
.site-footer .container{position:relative;z-index:1;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:52px;}
.footer-brand .brand{color:#fff;}
.footer-brand .brand-text strong{color:#fff;}
.footer-brand .brand-text em{color:rgba(255,255,255,.55);}
.footer-desc{font-size:14.5px;line-height:1.75;color:rgba(255,255,255,.68);margin:20px 0 22px;max-width:320px;}
.socials{display:flex;gap:10px;}
.socials a{
  width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.08);color:rgba(255,255,255,.78);
}
.socials a:hover{background:var(--blue);color:#fff;}
.socials svg{width:19px;height:19px;}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:18px;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.72);}
.footer-col a:hover{color:#fff;}
.footer-support{display:flex;align-items:center;gap:16px;margin-top:18px;}
.footer-support .qr-box{border-color:rgba(255,255,255,.18);background:rgba(255,255,255,.06);}
.footer-support .qr-box svg{color:#fff;opacity:.8;}
.footer-support p{font-size:13px;color:rgba(255,255,255,.6);margin:0;line-height:1.6;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13.5px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.62);}
.footer-bottom a:hover{color:#fff;}

/* ---------- Responsive ---------- */
@media (max-width:1100px){
  h1{font-size:40px;}
  .page-hero h1{font-size:38px;}
  .main-nav .nav-link{padding:0 10px;font-size:14.5px;}
  .split{gap:40px;}
}
@media (max-width:1024px){
  .section{padding:64px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .summary-grid{grid-template-columns:repeat(2,1fr);}
  .stat-strip{grid-template-columns:repeat(3,1fr);}
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-actions .btn{height:42px;padding:0 16px;}
}
@media (max-width:860px){
  .split{grid-template-columns:1fr;}
  .split--reverse .split-media{order:0;}
  .stat-strip{grid-template-columns:1fr;margin-top:-24px;}
  .cta-panel{padding:44px 26px;}
}
@media (max-width:768px){
  .page-hero{padding:34px 0 46px;}
  .page-hero h1{font-size:32px;}
  .page-hero .hero-desc{font-size:16.5px;}
  .summary-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
}
@media (max-width:640px){
  body{font-size:15.5px;}
  h1{font-size:30px;}
  h2{font-size:24px;}
  h3{font-size:19px;}
  .container{padding:0 18px;}
  .section{padding:48px 0;}
  .section--tight{padding:44px 0;}
  .brand-text strong{font-size:15.5px;}
  .brand-text em{font-size:11px;}
  .nav-actions .nav-text-link{display:none;}
  .tl-item{padding-left:58px;padding-bottom:26px;}
  .tl-node{width:40px;height:40px;font-size:15px;}
  .timeline::before{left:19px;}
  .tl-card{padding:20px;}
  .faq-q{padding:16px 18px;font-size:16px;}
  .faq-a p{padding:0 18px 18px 18px;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;}
}