/* roulang page: index */
:root{
      --ink:#15121b;
      --ink-soft:#443d49;
      --muted:#7d7480;
      --paper:#fffaf7;
      --mist:#f6eff3;
      --line:rgba(91,33,77,.13);
      --plum:#5b214d;
      --plum-deep:#39142f;
      --rose:#e94d7f;
      --rose-light:#ffedf3;
      --gold:#f4b75c;
      --white:#fff;
      --radius-xl:28px;
      --radius-lg:20px;
      --radius-md:14px;
      --shadow:0 18px 45px rgba(70,27,57,.10);
      --shadow-hover:0 24px 56px rgba(70,27,57,.16);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      min-width:320px;
      color:var(--ink);
      background:var(--paper);
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      line-height:1.65;
      text-rendering:optimizeLegibility;
    }
    a{color:inherit;text-decoration:none}
    button,input{font:inherit}
    button{cursor:pointer}
    img{display:block;max-width:100%}
    ::selection{background:#f8b9cc;color:#39142f}
    .site-shell{overflow:hidden}
    .container{width:min(1160px,calc(100% - 48px));margin:0 auto}
    .skip-link{
      position:absolute;left:16px;top:-50px;z-index:100;
      background:var(--plum);color:#fff;padding:9px 15px;border-radius:9px;
      transition:top .2s ease
    }
    .skip-link:focus{top:14px}
    .focus-ring:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible{
      outline:3px solid rgba(233,77,127,.4);outline-offset:3px
    }
    .topbar{
      border-bottom:1px solid var(--line);
      background:rgba(255,250,247,.86);
      backdrop-filter:blur(14px);
    }
    .topbar-inner{
      min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px
    }
    .brand{display:flex;align-items:center;gap:11px;min-width:0}
    .brand-mark{
      width:39px;height:39px;flex:0 0 39px;border-radius:13px;
      display:grid;place-items:center;color:#fff;
      background:linear-gradient(135deg,#e94d7f,#722755);
      box-shadow:0 10px 20px rgba(233,77,127,.24)
    }
    .brand-mark svg{width:22px;height:22px}
    .brand-name{font-size:15px;font-weight:800;letter-spacing:-.02em;white-space:nowrap}
    .brand-name span{color:var(--rose)}
    .desktop-nav{display:flex;align-items:center;gap:22px}
    .nav-link{
      position:relative;color:var(--ink-soft);font-size:14px;font-weight:700;
      padding:10px 2px;transition:color .2s ease
    }
    .nav-link:after{
      content:"";position:absolute;left:0;right:0;bottom:4px;height:2px;
      transform:scaleX(0);background:var(--rose);border-radius:99px;transition:transform .2s ease
    }
    .nav-link:hover,.nav-link.active{color:var(--plum)}
    .nav-link:hover:after,.nav-link.active:after{transform:scaleX(1)}
    .nav-cta{
      display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);
      background:#fff;padding:10px 14px;border-radius:12px;font-size:13px;font-weight:800;
      color:var(--plum);box-shadow:0 7px 18px rgba(70,27,57,.05);transition:.2s ease
    }
    .nav-cta:hover{transform:translateY(-2px);border-color:rgba(233,77,127,.42);box-shadow:0 12px 25px rgba(70,27,57,.10)}
    .menu-btn{display:none;border:0;background:transparent;color:var(--plum);padding:8px;border-radius:10px}
    .mobile-panel{display:none;border-top:1px solid var(--line);background:var(--paper)}
    .mobile-panel.open{display:block}
    .mobile-panel a{display:block;padding:13px 0;font-size:15px;font-weight:700;color:var(--ink-soft)}
    .mobile-panel a:first-child{color:var(--rose)}
    .hero{
      position:relative;padding:76px 0 70px;background:
      radial-gradient(circle at 86% 15%,rgba(244,183,92,.23),transparent 22%),
      radial-gradient(circle at 7% 36%,rgba(233,77,127,.12),transparent 26%),
      linear-gradient(145deg,#fff8f7 0%,#f9f1f4 56%,#fffaf7 100%);
    }
    .hero:before{
      content:"";position:absolute;right:-120px;bottom:-170px;width:430px;height:430px;border-radius:50%;
      border:1px solid rgba(91,33,77,.10)
    }
    .hero-grid{position:relative;display:grid;grid-template-columns:1.08fr .92fr;gap:58px;align-items:center}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.75);color:var(--plum);
      border:1px solid rgba(91,33,77,.12);border-radius:999px;padding:7px 12px;
      font-size:12px;font-weight:800;letter-spacing:.04em
    }
    .pulse-dot{width:7px;height:7px;border-radius:50%;background:var(--rose);box-shadow:0 0 0 5px rgba(233,77,127,.12)}
    h1,h2,h3,p{margin-top:0}
    .hero h1{max-width:690px;margin:20px 0 18px;font-size:clamp(36px,5vw,62px);line-height:1.13;letter-spacing:-.055em;font-weight:900}
    .hero h1 em{font-style:normal;color:var(--rose)}
    .hero-copy{max-width:610px;color:var(--ink-soft);font-size:17px;line-height:1.85}
    .hero-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:28px}
    .btn-primary,.btn-secondary{
      display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:13px;
      padding:13px 19px;font-size:14px;font-weight:800;transition:.22s ease;border:1px solid transparent
    }
    .btn-primary{color:#fff;background:var(--plum);box-shadow:0 13px 24px rgba(91,33,77,.22)}
    .btn-primary:hover{transform:translateY(-3px);background:var(--plum-deep);box-shadow:0 18px 30px rgba(91,33,77,.30)}
    .btn-primary:active,.btn-secondary:active{transform:translateY(0)}
    .btn-secondary{color:var(--plum);background:rgba(255,255,255,.76);border-color:var(--line)}
    .btn-secondary:hover{background:#fff;border-color:rgba(233,77,127,.4);transform:translateY(-3px)}
    .hero-note{display:flex;align-items:center;gap:9px;margin-top:23px;color:var(--muted);font-size:12px}
    .hero-note svg{color:var(--rose);width:17px;height:17px;flex:none}
    .showcase{position:relative;padding:18px}
    .showcase-panel{
      position:relative;min-height:416px;overflow:hidden;border-radius:var(--radius-xl);
      padding:27px;background:linear-gradient(155deg,#321329,#702653 59%,#e84e80);
      box-shadow:0 26px 54px rgba(70,27,57,.23)
    }
    .showcase-panel:before{content:"";position:absolute;width:280px;height:280px;right:-75px;top:-82px;border-radius:50%;border:1px solid rgba(255,255,255,.26)}
    .showcase-panel:after{content:"";position:absolute;width:220px;height:220px;left:-104px;bottom:-118px;border-radius:50%;background:rgba(244,183,92,.16)}
    .showcase-top{position:relative;z-index:1;display:flex;justify-content:space-between;align-items:center;color:#fff}
    .showcase-top span{font-size:12px;font-weight:700;opacity:.83}
    .live-chip{display:flex;align-items:center;gap:6px;border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:5px 9px;font-size:11px;font-weight:800}
    .live-chip i{display:block;width:6px;height:6px;border-radius:50%;background:#ffcf66}
    .feature-art{position:relative;z-index:1;margin-top:31px}
    .feature-art .mini-label{font-size:12px;color:#ffd6e3;font-weight:700;letter-spacing:.06em}
    .feature-art h2{margin:8px 0 9px;color:#fff;font-size:30px;line-height:1.22;font-weight:900;letter-spacing:-.04em}
    .feature-art p{max-width:330px;color:rgba(255,255,255,.78);font-size:13px}
    .visual-orbs{position:absolute;z-index:1;right:22px;bottom:25px;width:185px;height:158px}
    .orb{position:absolute;border-radius:50%;border:1px solid rgba(255,255,255,.25)}
    .orb-one{width:135px;height:135px;right:0;bottom:0;background:linear-gradient(145deg,rgba(244,183,92,.96),rgba(233,77,127,.45))}
    .orb-two{width:88px;height:88px;left:4px;top:5px;background:rgba(255,255,255,.16);backdrop-filter:blur(4px)}
    .play-symbol{position:absolute;right:43px;bottom:44px;width:56px;height:56px;display:grid;place-items:center;border-radius:50%;background:#fff;color:var(--plum);box-shadow:0 10px 24px rgba(38,9,29,.2)}
    .floating-rating{position:absolute;z-index:3;left:-8px;bottom:22px;padding:13px 15px;border-radius:15px;background:rgba(255,255,255,.93);box-shadow:var(--shadow);backdrop-filter:blur(10px)}
    .floating-rating strong{display:block;color:var(--plum);font-size:18px;line-height:1}
    .floating-rating span{display:block;margin-top:5px;color:var(--muted);font-size:11px;font-weight:700}
    .trust-strip{position:relative;z-index:2;margin-top:-1px;background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .trust-grid{display:grid;grid-template-columns:repeat(4,1fr)}
    .trust-item{display:flex;align-items:center;gap:12px;min-height:90px;padding:16px 25px;border-right:1px solid var(--line)}
    .trust-item:first-child{border-left:1px solid var(--line)}
    .trust-icon{display:grid;place-items:center;width:36px;height:36px;flex:none;border-radius:11px;background:var(--rose-light);color:var(--rose)}
    .trust-item strong{display:block;font-size:14px;color:var(--plum)}
    .trust-item span{display:block;margin-top:1px;color:var(--muted);font-size:12px}
    .section{padding:92px 0}
    .section-soft{background:var(--mist)}
    .section-dark{position:relative;background:var(--plum-deep);color:#fff;overflow:hidden}
    .section-dark:before{content:"";position:absolute;width:540px;height:540px;border:1px solid rgba(255,255,255,.09);border-radius:50%;right:-190px;top:-260px}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:34px}
    .section-kicker{color:var(--rose);font-size:12px;font-weight:900;letter-spacing:.12em}
    .section-title{margin:7px 0 0;font-size:clamp(27px,3.2vw,40px);line-height:1.2;letter-spacing:-.045em;font-weight:900}
    .section-desc{max-width:430px;margin:0;color:var(--muted);font-size:14px}
    .content-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .content-card{
      position:relative;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
      padding:24px;min-height:248px;box-shadow:0 7px 22px rgba(70,27,57,.035);transition:.25s ease
    }
    .content-card:hover{transform:translateY(-7px);border-color:rgba(233,77,127,.35);box-shadow:var(--shadow-hover)}
    .card-number{color:#eec8d7;font-size:45px;font-weight:900;line-height:1;letter-spacing:-.07em}
    .card-icon{position:absolute;right:20px;top:20px;display:grid;place-items:center;width:43px;height:43px;border-radius:13px;background:var(--rose-light);color:var(--rose)}
    .content-card h3{margin:27px 0 8px;color:var(--plum);font-size:19px;font-weight:900}
    .content-card p{margin:0;color:var(--ink-soft);font-size:13px;line-height:1.8}
    .card-link{display:inline-flex;align-items:center;gap:7px;margin-top:17px;color:var(--rose);font-size:13px;font-weight:800}
    .card-link svg{transition:transform .2s ease}
    .content-card:hover .card-link svg{transform:translateX(4px)}
    .discover-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:24px;align-items:stretch}
    .feature-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-xl);padding:29px;box-shadow:0 9px 28px rgba(70,27,57,.045)}
    .feature-list h3{margin-bottom:20px;color:var(--plum);font-size:22px;font-weight:900}
    .rank-list{list-style:none;margin:0;padding:0}
    .rank-list li{display:grid;grid-template-columns:38px 1fr auto;gap:13px;align-items:center;padding:15px 0;border-bottom:1px solid var(--line)}
    .rank-list li:last-child{padding-bottom:0;border-bottom:0}
    .rank-num{font-size:18px;font-weight:900;color:#d9b3c5}
    .rank-list li:nth-child(1) .rank-num{color:var(--rose)}
    .rank-list li:nth-child(2) .rank-num{color:#cf7697}
    .rank-title{display:block;color:var(--ink);font-size:14px;font-weight:800}
    .rank-meta{display:block;margin-top:2px;color:var(--muted);font-size:12px}
    .heat{display:inline-flex;align-items:center;gap:5px;color:var(--rose);font-size:12px;font-weight:800}
    .heat svg{width:14px;height:14px}
    .guide-panel{border-radius:var(--radius-xl);padding:31px;background:linear-gradient(145deg,#fff1f5,#f7dce6);border:1px solid rgba(233,77,127,.2)}
    .guide-panel h3{color:var(--plum);font-size:25px;line-height:1.3;font-weight:900}
    .guide-panel>p{color:var(--ink-soft);font-size:14px}
    .guide-points{display:grid;gap:11px;margin:24px 0}
    .guide-point{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink-soft)}
    .check{display:grid;place-items:center;width:21px;height:21px;flex:none;margin-top:1px;border-radius:50%;background:#fff;color:var(--rose);box-shadow:0 4px 10px rgba(91,33,77,.08)}
    .steps-grid{position:relative;z-index:1;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .step-card{padding:28px;border:1px solid rgba(255,255,255,.16);border-radius:var(--radius-lg);background:rgba(255,255,255,.055);transition:.22s ease}
    .step-card:hover{transform:translateY(-5px);background:rgba(255,255,255,.09);border-color:rgba(255,255,255,.28)}
    .step-index{display:block;color:#ffb9d0;font-size:13px;font-weight:900;letter-spacing:.12em}
    .step-card h3{margin:16px 0 8px;font-size:20px;font-weight:900}
    .step-card p{margin:0;color:rgba(255,255,255,.71);font-size:13px;line-height:1.8}
    .insight-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .insight-card{padding:23px;border-radius:var(--radius-lg);background:#fff;border:1px solid var(--line);transition:.22s ease}
    .insight-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .insight-icon{display:grid;place-items:center;width:40px;height:40px;border-radius:12px;background:var(--mist);color:var(--plum)}
    .insight-card h3{margin:18px 0 7px;color:var(--plum);font-size:16px;font-weight:900}
    .insight-card p{margin:0;color:var(--muted);font-size:12px;line-height:1.75}
    .faq-layout{display:grid;grid-template-columns:.78fr 1.22fr;gap:70px;align-items:start}
    .faq-intro p{color:var(--ink-soft);font-size:14px}
    .faq-badge{display:inline-flex;align-items:center;gap:8px;margin-top:14px;padding:9px 12px;color:var(--plum);background:var(--rose-light);border-radius:999px;font-size:12px;font-weight:800}
    .faq-list{display:grid;gap:11px}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:15px;overflow:hidden;transition:border-color .2s ease}
    .faq-item[open]{border-color:rgba(233,77,127,.38);box-shadow:0 8px 20px rgba(70,27,57,.05)}
    .faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:18px 19px;list-style:none;color:var(--plum);font-size:15px;font-weight:800;cursor:pointer}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-plus{position:relative;width:20px;height:20px;flex:none;color:var(--rose)}
    .faq-plus:before,.faq-plus:after{content:"";position:absolute;left:3px;right:3px;top:9px;height:2px;background:currentColor;border-radius:2px;transition:transform .2s ease}
    .faq-plus:after{transform:rotate(90deg)}
    .faq-item[open] .faq-plus:after{transform:rotate(0)}
    .faq-answer{padding:0 19px 18px;color:var(--ink-soft);font-size:13px;line-height:1.85}
    .cta-wrap{
      position:relative;overflow:hidden;display:grid;grid-template-columns:1fr auto;gap:26px;align-items:center;
      padding:43px 48px;border-radius:var(--radius-xl);background:linear-gradient(115deg,#63234f,#9d3769);box-shadow:0 22px 46px rgba(91,33,77,.22)
    }
    .cta-wrap:before{content:"";position:absolute;width:310px;height:310px;right:-88px;top:-178px;border-radius:50%;border:1px solid rgba(255,255,255,.17)}
    .cta-wrap:after{content:"";position:absolute;width:180px;height:180px;right:100px;bottom:-125px;border-radius:50%;background:rgba(244,183,92,.15)}
    .cta-content{position:relative;z-index:1}
    .cta-content .section-kicker{color:#ffd0df}
    .cta-content h2{margin:8px 0 8px;color:#fff;font-size:clamp(25px,3vw,37px);line-height:1.25;font-weight:900;letter-spacing:-.04em}
    .cta-content p{max-width:670px;margin:0;color:rgba(255,255,255,.75);font-size:14px}
    .cta-button{position:relative;z-index:1;white-space:nowrap;background:#fff;color:var(--plum);box-shadow:0 12px 25px rgba(41,9,30,.18)}
    .cta-button:hover{background:#fff4f7;color:var(--rose)}
    footer{padding:52px 0 24px;background:#191018;color:#fff}
    .footer-grid{display:grid;grid-template-columns:1.25fr .75fr .8fr;gap:30px;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.12)}
    .footer-brand .brand-name{font-size:16px}
    .footer-brand p{max-width:450px;margin:16px 0 0;color:rgba(255,255,255,.62);font-size:13px;line-height:1.85}
    .footer-heading{margin:2px 0 13px;color:#fff;font-size:13px;font-weight:900}
    .footer-list{list-style:none;margin:0;padding:0;display:grid;gap:8px}
    .footer-list a,.footer-list li{color:rgba(255,255,255,.62);font-size:13px;transition:color .2s ease}
    .footer-list a:hover{color:#ffb3ca}
    .footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:18px;padding-top:21px;color:rgba(255,255,255,.46);font-size:12px}
    .footer-bottom span:last-child{color:rgba(255,255,255,.36)}
    @media(max-width:1024px){
      .hero-grid{gap:30px}
      .hero h1{font-size:48px}
      .discover-grid,.faq-layout{gap:38px}
      .insight-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      .container{width:min(100% - 36px,1160px)}
      .topbar-inner{min-height:68px}
      .desktop-nav{display:none}.menu-btn{display:block}
      .hero{padding:58px 0 54px}
      .hero-grid,.discover-grid,.faq-layout{grid-template-columns:1fr}
      .hero-copy{font-size:15px}
      .showcase{max-width:520px;width:100%;margin:3px auto 0;padding:8px}
      .showcase-panel{min-height:360px}
      .trust-grid{grid-template-columns:repeat(2,1fr)}
      .trust-item:nth-child(3){border-left:1px solid var(--line)}
      .section{padding:68px 0}
      .section-head{display:block;margin-bottom:27px}
      .section-desc{margin-top:13px}
      .content-grid{grid-template-columns:1fr}
      .content-card{min-height:0}
      .steps-grid{grid-template-columns:1fr}
      .faq-layout{gap:27px}
      .cta-wrap{grid-template-columns:1fr;padding:34px 28px}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-brand{grid-column:1/-1}
    }
    @media(max-width:520px){
      .container{width:min(100% - 28px,1160px)}
      .brand-name{font-size:13px;overflow:hidden;text-overflow:ellipsis}
      .brand-mark{width:35px;height:35px;flex-basis:35px;border-radius:11px}
      .hero{padding-top:43px}
      .hero h1{font-size:35px}
      .hero-actions{align-items:stretch;flex-direction:column}
      .btn-primary,.btn-secondary{width:100%}
      .showcase-panel{padding:22px;min-height:335px}
      .feature-art h2{font-size:26px}
      .visual-orbs{transform:scale(.8);transform-origin:right bottom}
      .floating-rating{left:0;bottom:12px}
      .trust-grid{grid-template-columns:1fr}
      .trust-item,.trust-item:nth-child(3){min-height:72px;border-left:1px solid var(--line);border-bottom:1px solid var(--line)}
      .trust-item:last-child{border-bottom:0}
      .section-title{font-size:29px}
      .feature-list,.guide-panel{padding:22px}
      .rank-list li{grid-template-columns:30px 1fr}
      .heat{display:none}
      .insight-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
      .footer-brand{grid-column:auto}
      .footer-bottom{align-items:flex-start;flex-direction:column}
    }