/* roulang page: index */
:root{--brand:#6044d8;--accent:#d7f195;--ink:#242137;--muted:#777286;--line:#e7e3ef;--paper:#f7f6fb;--radius:28px;--shadow:0 18px 60px rgba(51,35,98,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:105px}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.8;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}img,svg{display:block;max-width:100%}a,button,.card{transition:color .2s,background .2s,transform .2s,box-shadow .2s,border-color .2s}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #ad93ff;outline-offset:5px}button:active,.btn:active{transform:translateY(1px)}::selection{background:#ded4ff}
.container{width:min(1180px,calc(100% - 64px));margin:auto}.site-header{position:sticky;top:0;z-index:40;background:rgba(247,246,251,.94);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.nav-shell{height:88px;display:flex;align-items:center;justify-content:space-between;gap:28px}.logo{display:flex;align-items:center;gap:12px;font-weight:800;font-size:18px;letter-spacing:-.5px}.logo-mark{display:grid;place-items:center;background:var(--brand);color:white;width:47px;height:47px;border-radius:15px;font-size:28px;letter-spacing:-3px;padding-right:3px}.nav-links{display:flex;align-items:center;gap:12px}.nav-link{padding:11px 20px;border-radius:12px;font-size:14px;font-weight:600;color:var(--muted)}.nav-link:hover,.nav-link.active{background:#eae5f9;color:var(--brand)}.nav-link.nav-cta{background:var(--ink);color:white;padding:13px 23px}.nav-link.nav-cta:hover{background:var(--brand)}
.section{padding:76px 0;border-bottom:1px solid var(--line)}.section-white{background:#fff}.eyebrow{display:flex;align-items:center;gap:10px;font-size:13px;font-weight:700;color:var(--brand);margin-bottom:18px}.eyebrow:before{content:"";width:22px;height:2px;background:currentColor}h1,h2,h3,p{margin:0}h1{font-size:clamp(38px,5.5vw,68px);line-height:1.18;letter-spacing:-2px;font-weight:800}h2{font-size:clamp(27px,3.2vw,40px);font-weight:750;letter-spacing:-1px;line-height:1.35}h3{font-size:20px;font-weight:700;line-height:1.5}.intro{color:var(--muted);font-size:15px;line-height:1.95;max-width:760px;margin-top:20px}.section-heading{margin-bottom:34px}.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px}.card:hover{border-color:#c6b6ec;box-shadow:var(--shadow);transform:translateY(-3px)}.card p{font-size:14px;color:var(--muted);margin-top:12px}.badge{display:inline-flex;align-items:center;gap:7px;padding:5px 12px;border-radius:99px;background:#eee9fb;color:var(--brand);font-size:12px;font-weight:650}.badge-dot:before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}.btn{display:inline-flex;align-items:center;justify-content:center;gap:18px;min-height:50px;padding:12px 24px;border-radius:14px;font-size:14px;font-weight:700;border:1px solid transparent}.btn-primary{background:var(--brand);color:#fff}.btn-primary:hover{background:#4a30b5;box-shadow:0 8px 20px #6044d82b}.btn-light{background:#fff;color:var(--ink);border-color:var(--line)}.btn-light:hover{border-color:var(--brand);color:var(--brand)}
.hero{padding:42px 0 62px}.hero-stage{overflow:hidden;position:relative;padding:58px 58px 0;border:1px solid #ddd2f3;border-radius:36px;background:radial-gradient(ellipse at 100% 10%,#dfcdfd 0,transparent 47%),radial-gradient(ellipse at 0 100%,#ebf2d8 0,transparent 45%),#eee8fa}.hero-stage:after{content:"c7";position:absolute;right:18px;top:8px;font-size:260px;line-height:1;font-weight:900;letter-spacing:-25px;color:#6044d809;pointer-events:none}.hero-top{position:relative;z-index:1;max-width:850px}.hero-copy{max-width:780px;color:#665c7b;font-size:16px;line-height:1.95;margin:23px 0 30px}.hero-console{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr 1.5fr;gap:28px;background:#fff;border:1px solid #e7deef;border-bottom:0;border-radius:26px 26px 0 0;padding:28px;margin-top:38px;box-shadow:0 -5px 45px #58458008}.progress-group{display:flex;gap:24px;align-items:center}.progress-ring{width:104px;height:104px;flex-shrink:0;border-radius:50%;background:conic-gradient(var(--brand) 0deg,#efebf5 0deg);padding:9px}.ring-core{width:100%;height:100%;background:white;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;line-height:1.4}.ring-core strong{font-size:26px}.ring-core span{font-size:11px;color:var(--muted)}.tier-mini{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.tier-mini div{padding:17px 12px;background:#f8f6fc;border-radius:16px}.tier-mini b{display:block;font-size:14px}.tier-mini span{font-size:12px;color:var(--muted)}.case-art{height:180px;margin:-8px -8px 25px;border-radius:20px;overflow:hidden;display:grid;place-items:center;position:relative;background:#eee8fa}.sample-window{width:76%;background:white;border:1px solid #e8e1f4;border-radius:14px;padding:19px;box-shadow:0 15px 30px #45357814;transform:rotate(-4deg)}.sample-line{height:7px;border-radius:5px;background:#ebe6f6;margin-top:9px}.sample-line.accent{background:#9b82df;width:46%}.metric{border-left:1px solid var(--line);padding:10px 25px}.metric strong{font-size:45px;line-height:1.2;letter-spacing:-2px}.metric strong small{font-size:18px;margin-left:5px;letter-spacing:0}.metric p{font-size:13px;color:var(--muted);margin-top:12px}.comparison{display:grid;grid-template-columns:1fr 1fr;gap:20px}.compare-box{padding:32px;border-radius:24px;background:#efedf4}.compare-box.after{background:#ede8fb;border:1px solid #d7c9f5}.list{list-style:none;margin:23px 0 0;padding:0}.list li{position:relative;border-top:1px solid #ded7e9;padding:15px 0 15px 22px;font-size:14px;color:#686176}.list li:before{content:"";position:absolute;left:0;top:25px;width:6px;height:6px;background:#aca1bf;border-radius:50%}.after .list li:before{background:var(--brand)}.dark-panel{background:#252037;color:white}.dark-panel .intro{color:#beb5cf}.steps{counter-reset:step}.step{position:relative;border-left:1px solid #51445f;padding:0 0 29px 35px}.step:last-child{padding-bottom:0}.step:before{counter-increment:step;content:counter(step);position:absolute;left:-14px;top:0;display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:#bba1f5;color:#261e39;font-size:12px;font-weight:700}.step p{font-size:14px;color:#beb5cf;margin-top:8px}.price{font-size:35px;letter-spacing:-1px;font-weight:800;margin-top:22px}.price small{font-size:13px;font-weight:500;letter-spacing:0;color:var(--muted)}.feature-card{background:#f0ebfc;border-color:#c9b8ef}.channel{display:flex;justify-content:space-between;align-items:center;gap:25px;border:1px solid #d5c9ed;border-radius:26px;background:linear-gradient(110deg,#eee7fb,#f7f7ef);padding:36px}.channel-arrow{display:grid;place-items:center;flex-shrink:0;border-radius:50%;background:var(--brand);color:white;width:58px;height:58px;font-size:24px}.channel:hover .channel-arrow{transform:translateX(4px)}.news-row{padding:25px 0;border-top:1px solid var(--line);display:grid;grid-template-columns:100px 1fr 36px;gap:25px;align-items:start}.news-row p{font-size:14px;color:var(--muted);margin-top:8px}.news-row>a{font-size:23px;color:var(--brand)}details{border-bottom:1px solid var(--line);padding:23px 0}summary{font-size:17px;font-weight:650;list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:25px}summary::-webkit-details-marker{display:none}summary:after{content:"+";color:var(--brand);font-size:22px}details[open] summary:after{content:"−"}details p{font-size:14px;color:var(--muted);line-height:1.9;margin-top:17px;max-width:740px}.cta-panel{border-radius:32px;padding:44px;background:#e9e1f8;display:grid;grid-template-columns:1fr 1fr;gap:50px}.form-box{background:#fff;padding:26px;border-radius:22px}.form-box label{font-size:14px;font-weight:650;display:block;margin-bottom:9px}.form-box select{width:100%;background:#f8f6fc;border:1px solid var(--line);border-radius:12px;padding:12px;color:var(--ink);margin-bottom:16px}.form-note{font-size:12px;color:var(--muted);margin-top:13px}.site-footer{padding:42px 0;background:#fff}.footer-row{display:flex;justify-content:space-between;align-items:center;gap:25px}.footer-meta{border-top:1px solid var(--line);padding-top:22px;margin-top:28px;display:flex;justify-content:space-between;gap:20px;font-size:12px;color:var(--muted)}.footer-meta a:hover{color:var(--brand)}.status-message{font-size:13px;color:var(--brand);margin-top:12px;min-height:24px}
@media(min-width:1024px){.hero-top h1{max-width:870px}}
@media(max-width:1024px){.container{width:calc(100% - 48px)}.hero-stage{padding:42px 34px 0}.hero-console{grid-template-columns:1fr}.section{padding:60px 0}.cta-panel{gap:28px;padding:32px}}
@media(max-width:768px){.container{width:calc(100% - 36px)}.nav-shell{height:76px;gap:12px}.logo{font-size:15px;gap:9px}.logo-mark{width:39px;height:39px;font-size:25px}.nav-links{gap:5px}.nav-link{padding:9px 12px}.nav-link.nav-cta{padding:11px 14px}.hero{padding-top:24px}.hero-stage{padding:34px 26px 0;border-radius:26px}.hero-console{padding:21px;margin-top:28px}.hero-copy{font-size:15px}.comparison,.cta-panel{grid-template-columns:1fr}.metric{padding-left:18px}.metric strong{font-size:37px}.channel{padding:26px}.news-row{grid-template-columns:80px 1fr 25px;gap:16px}.footer-row{align-items:flex-start}.footer-meta{flex-direction:column;gap:7px}}
@media(max-width:520px){.container{width:calc(100% - 28px)}.logo-name{display:none}.nav-shell{gap:10px}.nav-link{font-size:13px}.hero-stage{padding:29px 20px 0}h1{font-size:38px;letter-spacing:-1px}.hero-console{margin-left:-8px;margin-right:-8px;padding:18px 15px;gap:21px}.progress-group{gap:18px}.progress-ring{width:88px;height:88px}.tier-mini{gap:6px}.tier-mini div{padding:13px 8px}.tier-mini b{font-size:12px}.tier-mini span{font-size:11px}.section{padding:46px 0}.card,.compare-box{padding:24px}.metric{padding:5px 14px}.news-row{grid-template-columns:1fr 25px}.news-row>.badge{grid-column:1/-1;width:max-content}.news-row h3{font-size:18px}.cta-panel{padding:26px 20px}.form-box{padding:21px}.footer-row{flex-direction:column}.channel-arrow{width:44px;height:44px}.channel{gap:15px;padding:24px}.btn{padding:11px 19px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}

/* roulang page: category1 */
:root{--brand:#6044d8;--accent:#d7f195;--ink:#242137;--muted:#777286;--line:#e7e3ef;--paper:#f7f6fb;--radius:28px;--shadow:0 18px 60px rgba(51,35,98,.08)}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:105px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.8;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}img,svg{display:block;max-width:100%}
a,button,.card{transition:color .2s,background .2s,transform .2s,box-shadow .2s,border-color .2s}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #ad93ff;outline-offset:5px}
button:active,.btn:active{transform:translateY(1px)}
.container{width:min(1180px,calc(100% - 64px));margin:auto}
.site-header{position:sticky;top:0;z-index:40;background:rgba(247,246,251,.94);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.nav-shell{height:88px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.logo{display:flex;align-items:center;gap:12px;font-weight:800;font-size:18px;letter-spacing:-.5px}
.logo-mark{display:grid;place-items:center;background:var(--brand);color:white;width:47px;height:47px;border-radius:15px;font-size:28px;letter-spacing:-3px;padding-right:3px}
.nav-links{display:flex;align-items:center;gap:12px}
.nav-link{padding:11px 20px;border-radius:12px;font-size:14px;font-weight:600;color:var(--muted)}
.nav-link:hover,.nav-link.active{background:#eae5f9;color:var(--brand)}
.nav-link.nav-cta{background:var(--ink);color:white;padding:13px 23px}
.nav-link.nav-cta:hover,.nav-link.nav-cta.active{background:var(--brand)}
.section{padding:76px 0;border-bottom:1px solid var(--line)}.section-white{background:#fff}
.eyebrow{display:flex;align-items:center;gap:10px;font-size:13px;font-weight:700;color:var(--brand);margin-bottom:18px}
.eyebrow:before{content:"";width:22px;height:2px;background:currentColor}
.section-heading{margin-bottom:34px}h1,h2,h3,p{margin:0}h2{font-size:34px;line-height:1.4;font-weight:750;letter-spacing:-1px}h3{font-size:20px;font-weight:700;line-height:1.5}.text-muted{color:var(--muted)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px}
.card:hover{border-color:#c6b6ec;box-shadow:var(--shadow);transform:translateY(-3px)}
.card p{font-size:14px;color:var(--muted);margin-top:12px}
.badge{display:inline-flex;align-items:center;gap:7px;padding:5px 12px;border-radius:99px;background:#eee9fb;color:var(--brand);font-size:12px;font-weight:650}
.badge-dot:before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:18px;min-height:50px;padding:12px 24px;border-radius:14px;font-size:14px;font-weight:700;border:1px solid transparent}
.btn-primary{background:var(--brand);color:#fff}.btn-primary:hover{background:#4a30b5;box-shadow:0 8px 20px #6044d82b}
.btn-light{background:#fff;color:var(--ink);border-color:var(--line)}.btn-light:hover{border-color:var(--brand);color:var(--brand)}
.hero{padding:42px 0 62px}.topic-hero{position:relative;overflow:hidden;border:1px solid #ddd2f3;border-radius:36px;padding:48px;background:radial-gradient(ellipse at 90% 0,#dfcdfd,transparent 60%),radial-gradient(ellipse at 0 100%,#e7efd6,transparent 50%),#eee8fa}
.hero-copy{color:#665c7b;font-size:16px;line-height:1.95;margin:23px 0 30px;max-width:570px}
.form-box{background:#fff;padding:26px;border-radius:22px;box-shadow:var(--shadow)}
.form-box label{font-size:14px;font-weight:650;display:block;margin-bottom:9px}
.form-box select,.form-box textarea{width:100%;background:#f8f6fc;border:1px solid var(--line);border-radius:12px;padding:12px;color:var(--ink);margin-bottom:16px}
.form-box textarea{resize:vertical;min-height:115px}.form-note{font-size:12px;color:var(--muted);margin-top:13px}
.list{list-style:none;margin:23px 0 0;padding:0}.list li{position:relative;border-top:1px solid #ded7e9;padding:15px 0 15px 22px;font-size:14px;color:#686176}.list li:before{content:"";position:absolute;left:0;top:25px;width:6px;height:6px;background:var(--brand);border-radius:50%}
.feature-card{background:#f0ebfc;border-color:#c9b8ef}
.number{display:inline-flex;align-items:center;justify-content:center;width:43px;height:43px;background:#eee9fb;color:var(--brand);border-radius:14px;font-weight:750;margin-bottom:26px}
.scene-row{padding:25px 0;border-top:1px solid var(--line);display:grid;grid-template-columns:55px 1fr;gap:15px}
.scene-row p{color:var(--muted);font-size:14px;margin-top:8px}
.demo-stage{background:#eae6f5;border:1px solid #ded6ef;border-radius:30px;padding:28px}
.demo-sheet{background:white;border-radius:20px;padding:28px;box-shadow:var(--shadow)}
.demo-line{display:flex;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line);padding:16px 0;font-size:14px}
.status-panel{background:var(--ink);color:white;border-radius:30px;padding:38px}
.status-panel p{color:#ccc5dd}.status-step{padding:22px 0;border-top:1px solid #494357;display:flex;gap:22px}
.status-step:first-child{border-top:0}.status-step span{color:var(--accent);font-size:12px;white-space:nowrap;padding-top:5px}
.news-row{padding:25px 0;border-top:1px solid var(--line);display:grid;grid-template-columns:100px 1fr;gap:25px;align-items:start}
.news-row p{font-size:14px;color:var(--muted);margin-top:8px}
.cta-panel{border-radius:32px;padding:44px;background:#e9e1f8;display:grid;grid-template-columns:1fr 1fr;gap:50px}
.privacy-note{border-top:1px solid #d4c7e9;margin-top:26px;padding-top:22px;font-size:13px;color:#686176}
.site-footer{padding:42px 0;background:#fff}.footer-row{display:flex;justify-content:space-between;align-items:center;gap:25px}
.footer-meta{border-top:1px solid var(--line);padding-top:22px;margin-top:28px;display:flex;justify-content:space-between;gap:20px;font-size:12px;color:var(--muted)}.footer-meta a:hover{color:var(--brand)}
@media(min-width:1025px){.hero-grid{grid-template-columns:1.25fr .85fr}}
@media(max-width:1024px){.container{width:calc(100% - 48px)}.section{padding:60px 0}.topic-hero{padding:36px}.cta-panel{gap:28px;padding:32px}}
@media(max-width:768px){.container{width:calc(100% - 36px)}.nav-shell{height:76px;gap:12px}.logo{font-size:15px;gap:9px}.logo-mark{width:39px;height:39px;font-size:25px}.nav-links{gap:5px}.nav-link{padding:9px 12px}.nav-link.nav-cta{padding:11px 14px}.hero{padding-top:24px}.topic-hero{padding:28px;border-radius:26px}.cta-panel{grid-template-columns:1fr}.footer-meta{flex-direction:column;gap:7px}h2{font-size:28px}}
@media(max-width:520px){.container{width:calc(100% - 28px)}.logo-name{display:none}.nav-shell{gap:10px}.nav-link{font-size:13px}.section{padding:46px 0}.topic-hero{padding:26px 20px}.card{padding:24px}.news-row{grid-template-columns:1fr;gap:12px}.news-row>.badge{width:max-content}.cta-panel{padding:26px 20px}.form-box{padding:21px}.footer-row{flex-direction:column;align-items:flex-start}.demo-stage{padding:14px}.demo-sheet{padding:20px}.status-panel{padding:26px}.hero-copy{font-size:15px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}