/* roulang page: index */
:root{--ink:#142923;--muted:#69746e;--paper:#f5f6f2;--line:#dce2d9;--lime:#d2ef8b;--radius:24px;--shadow:0 12px 36px #14292309}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}img{display:block;width:100%;object-fit:cover}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.25}::selection{background:var(--lime);color:var(--ink)}:focus-visible{outline:3px solid #6c962e;outline-offset:5px}a,button,.card{transition:background .2s,color .2s,transform .2s,box-shadow .2s}button:active,.btn:active{transform:translateY(1px)}
.container{width:min(1200px,calc(100% - 64px));margin-inline:auto}.site-header{position:sticky;top:16px;z-index:40;margin:24px auto 28px}.nav-shell{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:80px;padding:14px 24px;border:1px solid #ffffffd9;border-radius:22px;background:#fffffff0;box-shadow:var(--shadow);backdrop-filter:blur(18px)}.logo{display:flex;align-items:center;gap:12px;font-weight:700}.logo-icon{display:grid;place-items:center;background:var(--ink);color:var(--lime);width:43px;height:43px;border-radius:13px;font-size:25px;letter-spacing:-3px;padding-right:3px}.logo-sub{font-size:11px;color:var(--muted);font-weight:400;letter-spacing:2px}.nav-links{display:flex;gap:6px}.nav-link{padding:10px 20px;border-radius:12px;font-size:14px}.nav-link:hover{background:var(--paper)}.nav-link.active{background:var(--ink);color:white}.nav-note{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:8px}.dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#709f40}.menu-toggle{display:none;border:1px solid var(--line);background:white;border-radius:10px;padding:8px 12px}
section{padding:76px 0;border-bottom:1px solid var(--line)}.hero{padding:0 0 64px;border:0}.hero-cover{height:300px;position:relative;border-radius:28px;overflow:hidden;background:var(--ink)}.hero-cover>img{height:100%;opacity:.6}.hero-cover:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#10271de0,#10271d30)}.cover-copy{position:absolute;z-index:1;left:40px;top:40px;color:white}.cover-copy .big{font-size:clamp(42px,6vw,76px);letter-spacing:-3px;font-weight:600;line-height:1.08}.cover-stamp{position:absolute;bottom:25px;right:30px;z-index:1;font-size:12px;color:#fff;letter-spacing:3px}.profile{position:relative;margin:-36px 36px 0;z-index:2}.avatar{height:86px;width:86px;border:7px solid var(--paper);border-radius:26px;background:var(--lime);display:grid;place-items:center;font-size:46px;font-weight:700;letter-spacing:-6px;padding-right:6px}.hero h1{font-size:clamp(30px,4vw,49px);letter-spacing:-1.5px;margin:20px 0}.hero-description{font-size:16px;color:var(--muted);max-width:840px;line-height:1.95}.badge{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:999px;padding:6px 13px;font-size:12px;background:#fff}.btn{display:inline-flex;justify-content:center;align-items:center;gap:22px;padding:13px 23px;border:1px solid var(--ink);background:var(--ink);color:#fff;border-radius:12px;font-size:14px;font-weight:600;min-height:48px}.btn:hover{background:#2b463b;box-shadow:0 6px 20px #14292316;transform:translateY(-2px)}.btn-light{background:var(--lime);color:var(--ink);border-color:var(--lime)}.btn-light:hover{background:#e1f6af;color:var(--ink)}.eyebrow{font-size:12px;color:var(--muted);letter-spacing:2px;margin-bottom:15px;display:flex;align-items:center;gap:12px}.eyebrow:before{content:"";width:22px;height:1px;background:currentColor}.section-title{font-size:clamp(26px,3vw,38px);font-weight:600;letter-spacing:-1px}.intro{font-size:15px;color:var(--muted);line-height:1.95;margin-top:22px;max-width:760px}.card{padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:white}.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.card h3{font-size:20px;margin:20px 0 12px}.card p{font-size:14px;color:var(--muted);line-height:1.85}.number{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}.icon-box{width:44px;height:44px;display:grid;place-items:center;background:var(--paper);border-radius:12px;font-size:23px}.dark-band{background:var(--ink);color:white;border:0}.dark-band .intro,.dark-band .eyebrow{color:#bccbc2}.spec-list{border-top:1px solid var(--line)}.spec-row{display:grid;grid-template-columns:150px 1fr;gap:24px;padding:19px 0;border-bottom:1px solid var(--line);font-size:14px}.spec-row dt{color:var(--muted)}.spec-row dd{margin:0}.image-card{border-radius:24px;overflow:hidden;background:white;border:1px solid var(--line)}.image-wrap{overflow:hidden;aspect-ratio:16/10;background:#e5e8df}.image-wrap img{height:100%;transition:transform .6s}.image-card:hover img{transform:scale(1.035)}.image-copy{padding:26px}.image-copy h3{font-size:22px;margin-bottom:12px}.image-copy p{font-size:14px;color:var(--muted);line-height:1.9}.step{border-top:1px solid #b5c4b7;padding-top:22px}.step-num{font-size:42px;font-weight:300;color:#96a796;letter-spacing:-2px}.step h3{font-size:18px;margin:15px 0 12px}.step p{font-size:14px;color:var(--muted)}.news-item{display:grid;grid-template-columns:80px 1fr 40px;gap:24px;align-items:start;padding:27px 0;border-bottom:1px solid var(--line)}.news-item h3{font-size:20px;margin-bottom:10px}.news-item p{font-size:14px;color:var(--muted);max-width:760px}.news-arrow{font-size:24px;color:#85917e}.metric{border-left:1px solid var(--line);padding-left:28px}.metric strong{font-size:44px;line-height:1.2;letter-spacing:-2px;font-weight:500;display:block}.metric span{display:block;font-size:13px;color:var(--muted);margin-top:12px}.field label{display:block;font-size:13px;font-weight:600;margin-bottom:9px}.field input,.field select,.field textarea{width:100%;background:#fff;border:1px solid #cdd6c9;border-radius:12px;padding:13px 15px;color:var(--ink);outline:none}.field input:focus,.field select:focus,.field textarea:focus{border-color:#69883b;box-shadow:0 0 0 3px #69883b20}.field textarea{min-height:125px;resize:vertical}.form-note{font-size:12px;color:var(--muted);line-height:1.85}.footer{padding:45px 0 28px;background:#edf0e8}.footer-link{font-size:13px;color:var(--muted)}.footer-link:hover{color:var(--ink);text-decoration:underline}.reveal{animation:rise .65s ease both}@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
@media(min-width:1025px){.hero-description{padding-right:20px}}
@media(max-width:1024px){.container{width:calc(100% - 48px)}.nav-note{display:none}section{padding:60px 0}.profile{margin-inline:24px}.hero-cover{height:270px}}
@media(max-width:768px){.container{width:calc(100% - 32px)}.site-header{top:10px;margin-top:14px;margin-bottom:20px}.nav-shell{min-height:68px;padding:12px 16px;flex-wrap:wrap;gap:12px}.menu-toggle{display:block}.nav-links{display:none;width:100%;padding-top:12px;border-top:1px solid var(--line)}.nav-links.open{display:flex}.nav-link{flex:1;text-align:center}.hero-cover{height:240px;border-radius:22px}.cover-copy{left:25px;top:35px}.profile{margin-inline:12px}.hero-description{font-size:15px}.spec-row{grid-template-columns:110px 1fr;gap:15px}.news-item{grid-template-columns:55px 1fr;gap:14px}.news-arrow{display:none}.card{padding:24px}section{padding:48px 0}}
@media(max-width:520px){.hero-cover{height:215px}.cover-copy .big{font-size:43px}.cover-stamp{font-size:10px;right:20px;letter-spacing:1px}.hero h1{font-size:31px}.hero-description{line-height:1.9}.logo-sub{display:none}.metric{padding-left:18px}.metric strong{font-size:35px}.spec-row{grid-template-columns:1fr;gap:5px}.image-copy{padding:22px}.btn{padding:12px 18px}.section-title{font-size:28px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}

/* roulang page: category1 */
:root{--ink:#142923;--muted:#69746e;--paper:#f5f6f2;--line:#dce2d9;--lime:#d2ef8b;--radius:24px;--shadow:0 12px 36px #14292309}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:120px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}img{display:block;width:100%;object-fit:cover}h1,h2,h3,p{margin:0}a,button,.card{transition:background .2s,color .2s,transform .2s,box-shadow .2s}button:active,.btn:active{transform:translateY(1px)}
:focus-visible{outline:3px solid #7b9d4b;outline-offset:5px}::selection{background:var(--lime);color:var(--ink)}
.container{width:min(1200px,calc(100% - 64px));margin-inline:auto}
.site-header{position:sticky;top:16px;z-index:40;margin:24px auto 28px}
.nav-shell{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:80px;padding:14px 24px;border:1px solid #ffffffd9;border-radius:22px;background:#fffffff0;box-shadow:var(--shadow);backdrop-filter:blur(18px)}
.logo{display:flex;align-items:center;gap:12px;font-weight:700}.logo-icon{display:grid;place-items:center;background:var(--ink);color:var(--lime);width:43px;height:43px;border-radius:13px;font-size:25px;letter-spacing:-3px;padding-right:3px;flex-shrink:0}.logo-sub{font-size:11px;color:var(--muted);font-weight:400;letter-spacing:2px}
.nav-links{display:flex;gap:6px}.nav-link{padding:10px 20px;border-radius:12px;font-size:14px}.nav-link:hover{background:var(--paper)}.nav-link.active{background:var(--ink);color:white}.nav-note{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:8px}.menu-toggle{display:none;border:1px solid var(--line);background:white;border-radius:10px;padding:8px 12px}.menu-toggle:hover{background:var(--paper)}
section{padding:76px 0;border-bottom:1px solid var(--line)}.hero{padding:30px 0 64px;border:0}.hero h1{font-size:clamp(38px,5vw,66px);line-height:1.18;letter-spacing:-2px;margin:20px 0 26px;font-weight:600}.hero-description{font-size:16px;color:var(--muted);max-width:620px;line-height:1.95}
.badge{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:999px;padding:6px 13px;font-size:12px;background:#fff}.dot{width:6px;height:6px;border-radius:50%;background:#6b843f;display:inline-block}
.btn{display:inline-flex;justify-content:center;align-items:center;gap:22px;padding:13px 23px;border:1px solid var(--ink);background:var(--ink);color:#fff;border-radius:12px;font-size:14px;font-weight:600;min-height:48px}.btn:hover{background:#2b463b;box-shadow:0 6px 20px #14292316;transform:translateY(-2px)}.btn-light{background:var(--lime);color:var(--ink);border-color:var(--lime)}.btn-light:hover{background:#e1f6af;color:var(--ink)}.btn-outline{color:var(--ink);background:transparent;border-color:var(--line)}.btn-outline:hover{background:white;color:var(--ink)}
.eyebrow{font-size:12px;color:var(--muted);letter-spacing:2px;margin-bottom:15px;display:flex;align-items:center;gap:12px}.eyebrow:before{content:"";width:22px;height:1px;background:currentColor}
.section-title{font-size:clamp(26px,3vw,38px);font-weight:600;letter-spacing:-1px;line-height:1.4}
.card{padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:white}.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.card h3{font-size:20px;margin:20px 0 12px}.card p{font-size:14px;color:var(--muted);line-height:1.85}
.spec-list{border-top:1px solid var(--line)}.spec-row{display:grid;grid-template-columns:150px 1fr;gap:24px;padding:19px 0;border-bottom:1px solid var(--line);font-size:14px}.spec-row dt{color:var(--muted)}.spec-row dd{margin:0}
.image-card{border-radius:24px;overflow:hidden;background:white;border:1px solid var(--line)}.image-wrap{overflow:hidden}.image-wrap img{height:100%;transition:transform .6s}.image-card:hover img{transform:scale(1.035)}
.news-item{display:grid;grid-template-columns:80px 1fr 40px;gap:24px;align-items:start;padding:27px 0;border-bottom:1px solid var(--line)}.news-item h3{font-size:20px;margin-bottom:10px}.news-item p{font-size:14px;color:var(--muted);max-width:760px}.news-arrow{font-size:24px;color:#85917e}
.footer{padding:45px 0 28px;background:#edf0e8}.footer-link{font-size:13px;color:var(--muted)}.footer-link:hover{color:var(--ink);text-decoration:underline}
.release-panel{position:relative;background:#edf0e8;border:1px solid var(--line);border-radius:28px;padding:28px;overflow:hidden}.release-ring{width:176px;height:176px;border:1px solid #b9c6ae;border-radius:50%;margin:25px auto;display:flex;align-items:center;justify-content:center;flex-direction:column;position:relative}.release-ring:before{content:"";position:absolute;inset:8px;border:5px solid #dae4ce;border-top-color:#829a59;border-radius:50%;transform:rotate(35deg)}.release-ring strong{font-size:27px;font-weight:500}.release-ring span{font-size:11px;color:var(--muted);margin-top:4px}.release-row{display:flex;justify-content:space-between;gap:16px;font-size:12px;padding:12px 0;border-top:1px solid #d3dccb}.release-row span{color:var(--muted)}
.feature-mark{display:grid;place-items:center;width:40px;height:40px;border:1px solid var(--line);border-radius:12px;font-size:14px;font-weight:600;background:var(--paper)}
.step{padding:24px 0;border-top:1px solid var(--line);display:grid;grid-template-columns:50px 1fr;gap:20px}.step-number{font-size:28px;color:#87977e;line-height:1.2}.step h3{font-size:18px;margin-bottom:8px}.step p{font-size:14px;color:var(--muted)}
.dark-band{background:var(--ink);color:white}.dark-band .eyebrow,.dark-band .intro{color:#bccbc2}.status-card{padding:25px;border:1px solid #ffffff24;border-radius:18px;background:#ffffff05}.status-card strong{display:block;font-size:26px;color:var(--lime);font-weight:500;margin:12px 0}.status-card p{font-size:13px;color:#bccbc2}
.quote-panel{position:relative;padding:38px 44px;background:#e9eedf;border-radius:var(--radius)}.quote-mark{font-size:72px;line-height:.9;color:#9caa83;font-family:Georgia,serif}.quote-panel blockquote{font-size:clamp(23px,3vw,34px);line-height:1.65;letter-spacing:-.5px;margin:12px 0 25px}
.audience-row{padding:25px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:180px 1fr;gap:30px}.audience-row:first-child{border-top:1px solid var(--line)}.audience-row h3{font-size:19px}.audience-row p{font-size:14px;color:var(--muted)}
.metric{padding:25px 28px;border-left:1px solid var(--line)}.metric strong{font-size:44px;font-weight:500;letter-spacing:-2px;display:block;line-height:1.2}.metric span{display:block;font-size:14px;margin-top:14px}.metric p{font-size:12px;color:var(--muted);margin-top:5px}
.cta-panel{border-radius:28px;padding:42px;background:#e8eddc;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center}.privacy-note{font-size:13px;color:var(--muted);border-top:1px solid #ced8c2;padding-top:20px;margin-top:28px;max-width:740px}
@media(min-width:769px){.nav-links{display:flex!important}}
@media(max-width:1024px){.container{width:calc(100% - 48px)}.nav-note{display:none}section{padding:60px 0}.hero h1{font-size:48px}.quote-panel{padding:30px}}
@media(max-width:768px){.container{width:calc(100% - 32px)}.site-header{top:10px;margin-top:14px;margin-bottom:20px}.nav-shell{min-height:68px;padding:12px 16px;flex-wrap:wrap;gap:12px}.menu-toggle{display:block}.nav-links{display:none;width:100%;padding-top:12px;border-top:1px solid var(--line)}.nav-links.open{display:flex}.nav-link{flex:1;text-align:center}.hero{padding-top:15px}.hero-description{font-size:15px}.spec-row{grid-template-columns:110px 1fr;gap:15px}.news-item{grid-template-columns:55px 1fr;gap:14px}.news-arrow{display:none}.card{padding:24px}section{padding:48px 0}.hero h1{font-size:42px}.cta-panel{grid-template-columns:1fr;padding:28px}.audience-row{grid-template-columns:140px 1fr;gap:20px}}
@media(max-width:520px){.hero h1{font-size:36px;letter-spacing:-1px}.hero-description{line-height:1.9}.logo-sub{display:none}.logo{font-size:14px;gap:9px}.spec-row{grid-template-columns:1fr;gap:5px}.btn{padding:12px 18px}.section-title{font-size:28px}.audience-row{grid-template-columns:1fr;gap:8px}.quote-panel{padding:25px}.metric{padding:20px 16px}.metric strong{font-size:36px}.release-panel{padding:24px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}