/* roulang page: index */
:root{
      --plum:#6f3f78;
      --plum-deep:#402946;
      --berry:#a24f76;
      --coral:#ef806b;
      --mint:#69b7a5;
      --cream:#fbf7f1;
      --paper:#fffdfa;
      --ink:#2f2733;
      --muted:#796f7d;
      --line:rgba(111,63,120,.14);
      --shadow:0 18px 50px rgba(77,45,77,.10);
      --shadow-soft:0 10px 30px rgba(77,45,77,.07);
      --radius-lg:28px;
      --radius-md:18px;
      --ease:all .22s ease-out;
    }
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--cream);color:var(--ink);font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;line-height:1.8}
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    .container{max-width:1220px}
    .site-header{position:absolute;z-index:10;top:22px;left:0;right:0}
    .nav-shell{background:rgba(255,253,250,.88);border:1px solid rgba(255,255,255,.9);border-radius:999px;padding:9px 12px 9px 22px;box-shadow:var(--shadow-soft);backdrop-filter:blur(12px)}
    .brand{display:flex;align-items:center;gap:10px;font-weight:800;line-height:1.15;color:var(--plum-deep);letter-spacing:-.03em}
    .brand-mark{width:34px;height:34px;border-radius:12px;background:linear-gradient(135deg,var(--plum),var(--coral));display:grid;place-items:center;color:#fff;font-size:15px;box-shadow:0 7px 16px rgba(111,63,120,.22)}
    .brand-text{font-size:15px;max-width:150px}
    .navbar-nav .nav-link{color:var(--muted);font-size:14px;font-weight:650;padding:9px 15px!important;border-radius:999px}
    .navbar-nav .nav-link:hover,.navbar-nav .nav-link.active{color:var(--plum);background:#f2e9f1}
    .nav-cta,.btn-main{border:0;background:linear-gradient(100deg,var(--plum),var(--berry));color:#fff;border-radius:999px;padding:12px 21px;font-weight:750;box-shadow:0 9px 20px rgba(111,63,120,.18)}
    .nav-cta:hover,.btn-main:hover{color:#fff;transform:translateY(-2px);box-shadow:0 13px 25px rgba(111,63,120,.27)}
    .navbar-toggler{border:1px solid var(--line);border-radius:14px;padding:8px 11px}
    .navbar-toggler:focus,.btn:focus,input:focus,textarea:focus,select:focus{box-shadow:0 0 0 4px rgba(239,128,107,.18)!important;outline:0}
    .hero{padding:155px 0 72px;position:relative;overflow:hidden;background:radial-gradient(circle at 83% 15%,#f8d5cb 0,transparent 27%),linear-gradient(135deg,#f8edf4 0%,#fbf7f1 55%,#edf6f1 100%)}
    .hero:after{content:"";position:absolute;width:330px;height:330px;border:1px solid rgba(111,63,120,.12);border-radius:50%;right:-90px;bottom:-180px}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--plum);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:24px;height:3px;border-radius:4px;background:var(--coral)}
    h1,h2,h3{font-weight:820;letter-spacing:-.045em;line-height:1.2}
    h1{font-size:clamp(2.4rem,5vw,4.7rem);max-width:700px;margin:18px 0 22px;color:var(--plum-deep)}
    h2{font-size:clamp(1.9rem,3vw,3rem);color:var(--plum-deep);margin:10px 0 15px}
    h3{font-size:1.25rem}
    .hero-copy{max-width:620px;color:var(--muted);font-size:17px}
    .hero-actions{display:flex;gap:14px;align-items:center;margin-top:30px;flex-wrap:wrap}
    .btn-ghost{padding:11px 17px;border-radius:999px;color:var(--plum);font-weight:750}
    .btn-ghost:hover{background:#f1e6f0;color:var(--plum-deep)}
    .preview-stage{position:relative;min-height:355px}
    .preview-card{position:absolute;inset:10px 0 0 55px;background:var(--plum-deep);border-radius:var(--radius-lg);padding:25px;color:#fff;box-shadow:0 24px 55px rgba(64,41,70,.25);overflow:hidden}
    .preview-card:before{content:"";position:absolute;width:240px;height:240px;border-radius:50%;right:-70px;top:-80px;background:linear-gradient(135deg,rgba(239,128,107,.8),rgba(105,183,165,.6));filter:blur(2px)}
    .preview-art{height:190px;border-radius:20px;background:linear-gradient(145deg,#b15b83,#ee967e 45%,#5aa995);position:relative;overflow:hidden}
    .preview-art:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(26,16,31,.52),transparent 65%)}
    .play-circle{position:absolute;z-index:1;left:50%;top:50%;transform:translate(-50%,-50%);width:64px;height:64px;border-radius:50%;background:#fff;color:var(--plum);display:grid;place-items:center;font-size:23px;padding-left:4px;box-shadow:0 10px 25px rgba(0,0,0,.16)}
    .preview-info{position:relative;z-index:2;margin-top:18px;display:flex;justify-content:space-between;gap:15px}
    .preview-info strong{display:block;font-size:18px}.preview-info small{color:#d9cddd}
    .status-pill,.tag{display:inline-flex;align-items:center;border-radius:999px;padding:5px 10px;font-size:12px;font-weight:750}
    .status-pill{background:rgba(105,183,165,.18);color:#9ce0d0}.tag{background:#f4e8f1;color:var(--plum);margin:4px 4px 0 0}
    .floating-stat{position:absolute;z-index:3;left:0;bottom:2px;background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:16px 18px;box-shadow:var(--shadow);width:160px}
    .floating-stat b{font-size:27px;color:var(--plum);display:block;line-height:1.1}.floating-stat span{font-size:12px;color:var(--muted)}
    section{padding:94px 0}.section-intro{max-width:650px;color:var(--muted);margin-bottom:34px}
    .metric-row{margin-top:45px;display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .metric{background:rgba(255,253,250,.82);border:1px solid var(--line);border-radius:18px;padding:20px 22px;box-shadow:var(--shadow-soft)}
    .metric b{display:block;color:var(--plum-deep);font-size:27px;line-height:1.2}.metric span{font-size:13px;color:var(--muted)}
    .matrix{display:grid;grid-template-columns:1.25fr .75fr .9fr;grid-template-rows:180px 180px;gap:16px}
    .matrix-card{border-radius:var(--radius-md);padding:24px;position:relative;overflow:hidden;background:var(--paper);border:1px solid var(--line);box-shadow:var(--shadow-soft);transition:var(--ease)}
    .matrix-card:hover,.content-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .matrix-card.large{grid-row:span 2;background:linear-gradient(145deg,var(--plum-deep),var(--plum));color:#fff;padding:30px}
    .matrix-card.mint{background:#e5f3ee}.matrix-card.coral{background:#fff0e9}
    .matrix-card h3{margin:14px 0 7px}.matrix-card p{font-size:13px;color:var(--muted);margin:0;line-height:1.65}.large p{color:#e9dcea}
    .arrow{position:absolute;right:20px;bottom:19px;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:rgba(111,63,120,.1);color:var(--plum)}.large .arrow{background:rgba(255,255,255,.18);color:#fff}
    .compare-wrap{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow-soft)}
    .compare{display:grid;grid-template-columns:1fr 1fr;gap:18px}.compare-card{padding:25px;border-radius:20px;background:#f3eff3}.compare-card.good{background:linear-gradient(145deg,#f6eaf4,#e5f3ee);border:1px solid #d8c4d7}
    .compare-card h3{margin-top:0}.compare-card ul{list-style:none;margin:20px 0 0;padding:0}.compare-card li{padding:11px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--muted)}.compare-card li:last-child{border:0}
    .check{color:var(--mint);font-weight:900;margin-right:8px}.dash{color:var(--berry);font-weight:900;margin-right:8px}
    .faq .accordion-item{border:1px solid var(--line)!important;border-radius:16px!important;overflow:hidden;margin-bottom:12px;background:var(--paper)}
    .accordion-button{font-weight:750;color:var(--plum-deep);background:var(--paper);padding:20px 22px}.accordion-button:not(.collapsed){color:var(--plum);background:#f7eff6;box-shadow:none}.accordion-button:focus{box-shadow:none}.accordion-body{color:var(--muted);font-size:14px;padding:0 22px 20px}
    .feedback{background:linear-gradient(120deg,var(--plum-deep),#70436f 60%,#9e5977);border-radius:var(--radius-lg);padding:45px;color:#fff;position:relative;overflow:hidden}.feedback:after{content:"";position:absolute;width:300px;height:300px;border:1px solid rgba(255,255,255,.14);border-radius:50%;right:-100px;top:-140px}
    .feedback h2{color:#fff}.feedback p{color:#eaddeb}.feedback-side{position:relative;z-index:1}.feedback-form{background:rgba(255,253,250,.97);border-radius:22px;padding:25px;color:var(--ink);position:relative;z-index:1}.form-label{font-size:13px;font-weight:750;color:var(--plum-deep)}.form-control,.form-select{border:1px solid var(--line);border-radius:12px;padding:12px 14px;background:#fff;color:var(--ink)}.form-control:focus,.form-select:focus{border-color:var(--coral)}
    .form-note{font-size:12px;color:var(--muted);margin:14px 0 0}
    .footer{background:#2f2433;color:#e7dce7;padding:48px 0 25px}.footer .brand{color:#fff}.footer p{color:#bdaebe;font-size:13px}.footer h3{font-size:14px;color:#fff;letter-spacing:0;margin-bottom:14px}.footer a{color:#cbbdca;font-size:13px;display:block;margin:8px 0}.footer a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:35px;padding-top:18px;color:#aa99aa;font-size:12px;display:flex;justify-content:space-between}
    .content-strip{display:grid;grid-template-columns:1.1fr .9fr;gap:20px}.content-card{display:flex;gap:18px;background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:14px;transition:var(--ease)}.cover{width:150px;min-width:150px;height:105px;border-radius:13px;background:linear-gradient(135deg,#754375,#e98875 55%,#67b4a1);position:relative}.cover:after{content:"▶";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.9);color:var(--plum);display:grid;place-items:center;font-size:13px;padding-left:2px}.content-card h3{font-size:16px;margin:3px 0 6px}.content-card p{font-size:13px;color:var(--muted);margin:0;line-height:1.6}.notice-box{background:#fff0e9;border-radius:18px;padding:24px}.notice-box h3{color:var(--berry);margin-top:0}
    @media(max-width:991px){.nav-shell{border-radius:22px;padding:10px 15px}.navbar-collapse{padding-top:15px}.nav-cta{display:inline-block;margin-top:8px}.hero{padding-top:140px}.matrix{grid-template-columns:1fr 1fr;grid-template-rows:auto}.matrix-card.large{grid-row:span 2}.content-strip{grid-template-columns:1fr}}
    @media(max-width:767px){section{padding:65px 0}.hero{padding:130px 0 50px}.hero-copy{font-size:15px}.preview-stage{min-height:330px;margin-top:30px}.preview-card{inset:0 0 0 25px}.floating-stat{left:0;bottom:-4px}.metric-row{grid-template-columns:repeat(2,1fr);margin-top:30px}.metric{padding:16px}.metric b{font-size:22px}.matrix{display:flex;flex-direction:column}.matrix-card,.matrix-card.large{min-height:170px}.compare{grid-template-columns:1fr}.feedback{padding:28px 20px}.feedback-form{margin-top:25px}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:8px}}
    @media(max-width:520px){h1{font-size:2.45rem}.brand-text{font-size:13px;max-width:125px}.preview-card{padding:17px}.preview-art{height:170px}.preview-info{display:block}.preview-info .status-pill{margin-top:10px}.content-card{display:block}.cover{width:100%;height:140px;margin-bottom:14px}}

/* roulang page: category1 */
:root{
 --plum:#6f3f78;--plum-deep:#402946;--berry:#a24f76;--coral:#ef806b;
 --mint:#69b7a5;--cream:#fbf7f1;--paper:#fffdfa;--ink:#2f2733;
 --muted:#796f7d;--line:rgba(111,63,120,.14);
 --shadow:0 18px 50px rgba(77,45,77,.10);--shadow-soft:0 10px 30px rgba(77,45,77,.07);
 --radius-lg:28px;--radius-md:18px;--ease:all .22s ease-out
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--cream);color:var(--ink);font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;line-height:1.8}
a{color:inherit;text-decoration:none;transition:var(--ease)}
a:hover{color:var(--plum)}
button,input,textarea,select{font:inherit}
img{max-width:100%;display:block}
.container{max-width:1220px}
.site-header{position:absolute;z-index:10;top:22px;left:0;right:0}
.nav-shell{background:rgba(255,253,250,.9);border:1px solid rgba(255,255,255,.92);border-radius:999px;padding:9px 12px 9px 22px;box-shadow:var(--shadow-soft);backdrop-filter:blur(12px)}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;line-height:1.15;color:var(--plum-deep);letter-spacing:-.03em}
.brand-mark{width:34px;height:34px;border-radius:12px;background:linear-gradient(135deg,var(--plum),var(--coral));display:grid;place-items:center;color:#fff;font-size:15px;box-shadow:0 7px 16px rgba(111,63,120,.22)}
.brand-text{font-size:15px;max-width:150px}
.navbar-nav .nav-link{color:var(--muted);font-size:14px;font-weight:650;padding:9px 15px!important;border-radius:999px}
.navbar-nav .nav-link:hover,.navbar-nav .nav-link.active{color:var(--plum);background:#f2e9f1}
.nav-cta,.btn-main{border:0;background:linear-gradient(100deg,var(--plum),var(--berry));color:#fff;border-radius:999px;padding:12px 21px;font-weight:750;box-shadow:0 9px 20px rgba(111,63,120,.18);display:inline-flex;align-items:center;justify-content:center;min-height:44px}
.nav-cta:hover,.btn-main:hover{color:#fff;transform:translateY(-2px);box-shadow:0 13px 25px rgba(111,63,120,.27)}
.navbar-toggler{border:1px solid var(--line);border-radius:14px;padding:8px 11px;color:var(--plum)}
.navbar-toggler:focus,.btn:focus,input:focus,textarea:focus,select:focus{box-shadow:0 0 0 4px rgba(239,128,107,.18)!important;outline:0}
.hero-inner{padding:150px 0 64px;background:radial-gradient(circle at 84% 15%,#f8d5cb 0,transparent 29%),linear-gradient(135deg,#f8edf4,#fbf7f1 57%,#edf6f1);position:relative;overflow:hidden}
.hero-inner:after{content:"";position:absolute;width:360px;height:360px;border:1px solid rgba(111,63,120,.12);border-radius:50%;right:-120px;bottom:-200px}
.eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--plum);font-size:13px;font-weight:800;letter-spacing:.08em}
.eyebrow:before{content:"";width:24px;height:3px;border-radius:4px;background:var(--coral)}
h1,h2,h3{color:var(--plum-deep);font-weight:800;letter-spacing:-.045em;line-height:1.25}
h1{font-size:clamp(34px,5vw,60px);margin:18px 0 18px;max-width:720px}
h2{font-size:clamp(27px,3vw,40px);margin:10px 0 15px}
h3{font-size:20px}
.hero-copy{max-width:680px;color:var(--muted);font-size:17px;margin-bottom:26px}
.hero-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.btn-ghost{padding:11px 17px;border-radius:999px;color:var(--plum);font-weight:750;min-height:44px}
.btn-ghost:hover{background:#f1e6f0;color:var(--plum-deep)}
.hero-panel{background:var(--plum-deep);border-radius:var(--radius-lg);padding:25px;color:#fff;box-shadow:0 24px 55px rgba(64,41,70,.24);position:relative;overflow:hidden}
.hero-panel:before{content:"";position:absolute;width:220px;height:220px;border-radius:50%;right:-75px;top:-80px;background:linear-gradient(135deg,rgba(239,128,107,.85),rgba(105,183,165,.68))}
.panel-top,.panel-title,.panel-meta{position:relative;z-index:1}
.status-pill,.tag,.filter-chip{display:inline-flex;align-items:center;border-radius:999px;padding:5px 11px;font-size:12px;font-weight:750}
.status-pill{background:rgba(105,183,165,.18);color:#9ce0d0}
.panel-title{font-size:27px;font-weight:800;margin:34px 0 8px}
.panel-meta{color:#dfcfe0;font-size:13px}
.progress{height:7px;background:rgba(255,255,255,.16);border-radius:99px;margin:25px 0 11px}
.progress-bar{background:linear-gradient(90deg,var(--coral),var(--mint));border-radius:99px}
.panel-foot{display:flex;justify-content:space-between;color:#d4c3d6;font-size:12px}
.state-strip{margin-top:22px;padding:13px 16px;border-radius:15px;background:rgba(255,253,250,.72);border:1px solid rgba(111,63,120,.1);color:var(--muted);font-size:13px}
.state-strip strong{color:var(--plum)}
section{padding:88px 0}
.section-intro{max-width:670px;color:var(--muted);margin-bottom:32px}
.filter-area{background:var(--paper);border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:var(--shadow-soft)}
.filter-label{font-size:13px;font-weight:800;color:var(--plum-deep);margin-right:10px}
.filter-chip{background:#f4e8f1;color:var(--plum);margin:4px;transition:var(--ease)}
.filter-chip:hover,.filter-chip.active{background:var(--plum);color:#fff}
.feature-card,.content-card,.topic-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-md);box-shadow:var(--shadow-soft);overflow:hidden;transition:var(--ease)}
.feature-card:hover,.content-card:hover,.topic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.media-art{height:210px;position:relative;overflow:hidden;background:linear-gradient(135deg,#56365f,#ad597b 55%,#ed9076)}
.media-art.mint-art{background:linear-gradient(135deg,#3b746f,#69b7a5 53%,#f3c5a5)}
.media-art.coral-art{background:linear-gradient(135deg,#773e61,#ef806b 60%,#f6cf9a)}
.media-art:after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,transparent 25%,rgba(255,255,255,.18),transparent 70%);transform:translateX(-50%)}
.media-line{position:absolute;width:180px;height:180px;border:1px solid rgba(255,255,255,.35);border-radius:50%;right:-35px;top:-55px}
.play-button{position:absolute;z-index:2;left:24px;bottom:22px;width:48px;height:48px;border-radius:50%;display:grid;place-items:center;background:#fff;color:var(--plum);box-shadow:0 10px 25px rgba(40,20,45,.22)}
.media-label{position:absolute;z-index:2;right:18px;top:18px;background:rgba(47,39,51,.5);color:#fff;border-radius:999px;padding:5px 10px;font-size:12px}
.card-body-custom{padding:24px}
.tag{background:#f4e8f1;color:var(--plum);margin:0 5px 7px 0}
.card-meta{color:var(--muted);font-size:12px;margin-top:13px}
.card-summary{color:var(--muted);font-size:14px;line-height:1.7;margin:12px 0 0}
.text-link{color:var(--plum);font-weight:750;font-size:14px;display:inline-flex;gap:8px;margin-top:18px}
.text-link:hover{color:var(--berry);gap:12px}
.content-card{display:flex;min-height:158px}
.content-card .media-art{width:225px;min-width:225px;height:auto}
.content-card .card-body-custom{flex:1}
.topic-card{padding:23px;height:100%;background:linear-gradient(145deg,#fffdfa,#f4eaf3)}
.topic-card p{font-size:14px;color:var(--muted);margin:8px 0 0}
.topic-num{color:var(--coral);font-weight:800;font-size:13px}
.faq .accordion-item{border:1px solid var(--line)!important;border-radius:16px!important;overflow:hidden;margin-bottom:12px;background:var(--paper)}
.accordion-button{font-weight:750;color:var(--plum-deep);background:var(--paper);padding:20px 22px}
.accordion-button:not(.collapsed){color:var(--plum);background:#f7eff6;box-shadow:none}
.accordion-button:focus{box-shadow:none}
.accordion-body{color:var(--muted);font-size:14px;padding:0 22px 20px}
.feedback-wrap{background:linear-gradient(135deg,var(--plum-deep),var(--plum));border-radius:var(--radius-lg);padding:38px;color:#fff;position:relative;overflow:hidden}
.feedback-wrap:after{content:"";position:absolute;width:280px;height:280px;border:1px solid rgba(255,255,255,.18);border-radius:50%;right:-80px;bottom:-150px}
.feedback-wrap h2{color:#fff}
.feedback-wrap p{color:#e0d0e0}
.feedback-form{background:rgba(255,253,250,.98);border-radius:22px;padding:25px;color:var(--ink);position:relative;z-index:1}
.form-label{font-size:13px;font-weight:750;color:var(--plum-deep)}
.form-control,.form-select{border:1px solid var(--line);border-radius:12px;padding:12px 14px;background:#fff;color:var(--ink)}
.form-control:focus,.form-select:focus{border-color:var(--coral)}
.form-note{font-size:12px;color:var(--muted);margin:14px 0 0}
.footer{background:#2f2433;color:#e7dce7;padding:48px 0 25px}
.footer .brand{color:#fff}.footer p{color:#bdaebe;font-size:13px}
.footer h3{font-size:14px;color:#fff;letter-spacing:0;margin-bottom:14px}
.footer a{color:#cbbdca;font-size:13px;display:block;margin:8px 0}
.footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:35px;padding-top:18px;color:#aa99aa;font-size:12px;display:flex;justify-content:space-between}
@media(max-width:991px){
 .site-header{top:12px}.nav-shell{border-radius:22px;padding:10px 14px}
 .navbar-collapse{padding:15px 5px 5px}.navbar-nav .nav-link{margin:3px 0}
 .nav-cta{margin-top:9px;text-align:center}.hero-inner{padding-top:138px}
 .content-card .media-art{width:190px;min-width:190px}
}
@media(max-width:767px){
 section{padding:58px 0}.hero-inner{padding:125px 0 48px}h1{font-size:38px}
 .hero-panel{margin-top:28px}.metric-row{grid-template-columns:repeat(2,1fr);margin-top:28px}
 .content-card{display:block}.content-card .media-art{width:100%;height:170px}
 .feedback-wrap{padding:25px 18px}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:6px}
}
@media(max-width:520px){
 .brand-text{font-size:13px;max-width:125px}.hero-actions>*{width:100%;text-align:center}
 .metric-row{gap:10px}.metric-row .state-strip{font-size:12px}
 .card-body-custom{padding:19px}.panel-title{font-size:23px}
}