/* roulang page: index */
:root{
            --ink:#18212f;
            --muted:#697586;
            --paper:#f6f7f9;
            --card:#ffffff;
            --line:#e4e8ee;
            --accent:#db5c43;
            --accent-dark:#b94332;
            --navy:#172235;
            --gold:#e7b86b;
            --radius:22px;
            --shadow:0 18px 45px rgba(24,33,47,.08);
            --soft-shadow:0 8px 24px rgba(24,33,47,.06);
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;line-height:1.7;font-size:16px}
        a{color:inherit;text-decoration:none;transition:.25s ease}
        img{max-width:100%;display:block}
        button,input{font:inherit}
        .container{max-width:1180px;margin:auto;padding:0 22px}
        .site-header{position:sticky;top:0;z-index:20;background:rgba(246,247,249,.9);backdrop-filter:blur(16px);border-bottom:1px solid rgba(228,232,238,.8)}
        .nav-wrap{height:76px;display:flex;align-items:center;gap:34px}
        .brand{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.03em;font-size:19px;white-space:nowrap}
        .brand-mark{width:31px;height:31px;border-radius:10px;background:var(--accent);color:#fff;display:grid;place-items:center;font-weight:900;font-size:15px;box-shadow:0 7px 15px rgba(219,92,67,.25)}
        .main-nav{display:flex;align-items:center;gap:25px;margin-left:24px;font-size:14px;color:var(--muted)}
        .main-nav a{padding:8px 2px;position:relative}
        .main-nav a:hover,.main-nav a.active{color:var(--ink)}
        .main-nav a.active:after{content:"";height:2px;position:absolute;bottom:0;left:0;right:0;background:var(--accent)}
        .nav-actions{margin-left:auto;display:flex;gap:10px;align-items:center}
        .btn{border-radius:12px;padding:11px 18px;font-weight:700;border:1px solid transparent;transition:.25s ease}
        .btn:focus,input:focus{outline:3px solid rgba(219,92,67,.2);outline-offset:2px}
        .btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 18px rgba(219,92,67,.2)}
        .btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px)}
        .btn-quiet{border-color:var(--line);background:#fff;color:var(--ink)}
        .btn-quiet:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
        .hero{padding:76px 0 70px;background:var(--paper);overflow:hidden}
        .hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:65px;align-items:center}
        .eyebrow{color:var(--accent);font-weight:800;letter-spacing:.12em;font-size:12px;text-transform:uppercase;margin-bottom:18px}
        h1,h2,h3{line-height:1.2;letter-spacing:-.045em;margin:0 0 18px;font-weight:850}
        h1{font-size:clamp(42px,6vw,76px);max-width:690px}
        h2{font-size:clamp(29px,4vw,46px)}
        h3{font-size:21px}
        .hero-copy{font-size:18px;line-height:1.85;color:var(--muted);max-width:660px;margin-bottom:28px}
        .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
        .hero-notes{display:flex;gap:28px;margin-top:34px;flex-wrap:wrap}
        .metric strong{display:block;font-size:25px;color:var(--ink);line-height:1.1}
        .metric span{font-size:13px;color:var(--muted)}
        .hero-stage{background:var(--navy);border-radius:28px;padding:28px;color:#fff;box-shadow:var(--shadow);position:relative;min-height:390px;overflow:hidden}
        .hero-stage:before{content:"";position:absolute;width:240px;height:240px;border:1px solid rgba(231,184,107,.35);border-radius:50%;right:-80px;top:-70px}
        .stage-top{display:flex;justify-content:space-between;align-items:center;color:#aeb8c7;font-size:13px}
        .stage-top b{color:#fff}
        .progress-zone{display:flex;align-items:center;gap:25px;margin:43px 0}
        .progress-ring{width:146px;height:146px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--gold) 0 72%,#39485d 72% 100%);flex:none}
        .progress-inner{width:112px;height:112px;border-radius:50%;background:var(--navy);display:grid;place-items:center;text-align:center}
        .progress-inner strong{font-size:29px;display:block;line-height:1}
        .progress-inner small{font-size:11px;color:#aeb8c7}
        .stage-copy h3{font-size:23px;color:#fff;margin-bottom:8px}
        .stage-copy p{color:#aeb8c7;font-size:14px;margin:0}
        .tier-list{border-top:1px solid #354258;padding-top:18px;display:flex;gap:10px}
        .tier{flex:1;border:1px solid #3b4a60;border-radius:13px;padding:12px}
        .tier.active{border-color:var(--gold);background:rgba(231,184,107,.08)}
        .tier span{display:block;color:#aeb8c7;font-size:12px}.tier b{font-size:15px}
        .section{padding:88px 0}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:35px}
        .section-head p{max-width:540px;color:var(--muted);margin:0}
        .dark-section{background:var(--navy);color:#fff}
        .dark-section .section-head p,.dark-section .muted{color:#aeb8c7}
        .update-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:22px}
        .feature-panel,.mini-panel,.info-card,.security-card,.app-panel,.form-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--soft-shadow)}
        .feature-panel{min-height:280px;display:flex;flex-direction:column;justify-content:end;background:linear-gradient(135deg,#fff 45%,#f4e5da)}
        .mini-stack{display:grid;gap:22px}
        .mini-panel{display:flex;align-items:center;justify-content:space-between;min-height:129px}
        .tag{display:inline-flex;padding:5px 10px;border-radius:30px;background:#f9e5df;color:var(--accent-dark);font-size:12px;font-weight:800;margin-bottom:14px}
        .feature-panel h3{font-size:30px;max-width:560px}
        .meta{font-size:13px;color:var(--muted)}
        .arrow{font-size:26px;color:var(--accent)}
        .quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}
        .quick-item{padding:25px 20px;border-left:3px solid var(--accent);background:#fff;border-radius:0 16px 16px 0}
        .quick-item strong{display:block;font-size:17px;margin-bottom:8px}
        .quick-item p{font-size:14px;color:var(--muted);margin:0}
        .info-layout{display:grid;grid-template-columns:1fr 340px;gap:28px}
        .article-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
        .article{display:flex;justify-content:space-between;gap:20px;padding:22px 26px;border-bottom:1px solid var(--line)}
        .article:last-child{border:0}.article:hover{background:#fff8f5}
        .article h3{font-size:18px;margin:0 0 5px}.article p{font-size:14px;color:var(--muted);margin:0}
        .article time{font-size:12px;color:var(--muted);white-space:nowrap}
        .recommend{background:var(--navy);color:#fff;border-radius:var(--radius);padding:27px}
        .recommend h3{color:#fff}.recommend p{color:#b7c0ce;font-size:14px}
        .recommend ul{padding:0;margin:25px 0 0;list-style:none}.recommend li{padding:13px 0;border-top:1px solid #3a485c;font-size:14px}
        .collection-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
        .collection{min-height:220px;border-radius:var(--radius);padding:25px;position:relative;overflow:hidden;color:#fff;background:#26364e}
        .collection:nth-child(2){background:#9e4d3f}.collection:nth-child(3){background:#596a58}
        .collection:after{content:"";position:absolute;width:160px;height:160px;border:1px solid rgba(255,255,255,.22);border-radius:50%;right:-45px;bottom:-55px}
        .collection h3{font-size:25px}.collection p{color:rgba(255,255,255,.75);font-size:14px;max-width:270px}.collection a{font-size:13px;font-weight:800;color:#fff}
        .security-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
        .security-card{padding:25px}.icon{width:42px;height:42px;border-radius:13px;background:#f9e5df;color:var(--accent);display:grid;place-items:center;font-size:20px;margin-bottom:18px}.security-card p{font-size:14px;color:var(--muted);margin:0}
        .story{background:#eee8df;padding:72px 0}.story-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px;align-items:center}.story p{color:#625e57;font-size:18px;line-height:1.9}.quote{font-size:clamp(25px,3vw,39px);font-weight:800;line-height:1.35}
        .app-panel{background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:space-between;gap:30px;padding:38px}.app-panel p{color:#b7c0ce;max-width:620px}.app-points{display:flex;gap:9px;flex-wrap:wrap}.app-points span{border:1px solid #46556a;border-radius:30px;padding:7px 12px;font-size:12px;color:#d6dde7}
        .form-section{background:#fff}.form-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:35px;align-items:start}.form-panel{box-shadow:none}.form-label{font-size:13px;font-weight:700;margin-bottom:7px}.form-control{border:1px solid var(--line);border-radius:10px;padding:12px 14px;background:#fafbfc}.privacy{font-size:12px;color:var(--muted);margin-top:13px}
        .faq-list{max-width:850px;margin:auto}.accordion-item{border:1px solid var(--line)!important;border-radius:14px!important;margin-bottom:12px;overflow:hidden}.accordion-button{font-weight:750;padding:20px;background:#fff!important;color:var(--ink)!important;box-shadow:none!important}.accordion-body{color:var(--muted);padding:0 20px 21px;font-size:14px}
        footer{background:#101927;color:#fff;padding:48px 0 25px}.footer-top{display:flex;justify-content:space-between;gap:30px}.footer-brand p{color:#98a5b7;max-width:360px;font-size:14px}.footer-links{display:flex;gap:22px;color:#bac4d0;font-size:14px}.footer-links a:hover{color:#fff}.copyright{border-top:1px solid #2c394a;margin-top:35px;padding-top:20px;color:#7f8c9d;font-size:12px}
        @media(max-width:1024px){.hero-grid{gap:35px}.main-nav{gap:15px;margin-left:5px}.quick-grid{grid-template-columns:repeat(2,1fr)}}
        @media(max-width:768px){.nav-wrap{height:68px}.main-nav{display:none}.nav-actions .btn-quiet{display:none}.hero{padding:55px 0}.hero-grid,.update-grid,.info-layout,.story-grid,.form-layout{grid-template-columns:1fr}.hero-stage{min-height:350px}.section{padding:62px 0}.section-head{display:block}.section-head p{margin-top:14px}.collection-grid,.security-grid{grid-template-columns:1fr}.app-panel{display:block}.app-panel .btn{margin-top:15px}.footer-top{display:block}.footer-links{margin-top:25px;flex-wrap:wrap}}
        @media(max-width:520px){.container{padding:0 17px}h1{font-size:42px}.hero-copy{font-size:16px}.hero-notes{gap:18px}.progress-zone{gap:15px;margin:35px 0}.progress-ring{width:120px;height:120px}.progress-inner{width:92px;height:92px}.progress-inner strong{font-size:24px}.tier-list{display:grid;grid-template-columns:1fr}.article{display:block}.article time{display:block;margin-top:10px}.quick-grid{grid-template-columns:1fr}.app-panel{padding:26px}.nav-actions .btn-primary{padding:9px 12px;font-size:13px}}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}