/* roulang page: index */
:root{--brand:#1859df;--navy:#162844;--muted:#63738a;--line:#dfe7f2;--paper:#fff;--bg:#f3f7fd;--radius:20px;--shadow:0 12px 35px rgba(24,56,107,.07)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:145px}body{margin:0;background:var(--paper);color:var(--navy);font-family:"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.8}a{color:inherit;text-decoration:none}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}img,svg{max-width:100%;display:block}button:disabled{cursor:default}a,button,summary{transition:background .2s,color .2s,box-shadow .2s,transform .2s}a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{outline:3px solid #82b1ff;outline-offset:5px}a:active,button:active{transform:translateY(1px)}.container{width:min(1180px,calc(100% - 64px));margin:auto}.site-header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);box-shadow:0 3px 20px #16284405}.header-top{min-height:83px;display:flex;align-items:center;justify-content:space-between;gap:24px}.logo{display:flex;align-items:center;gap:12px;font-size:21px;font-weight:800;letter-spacing:-.5px}.logo-icon{display:grid;place-items:center;background:var(--brand);color:#fff;width:39px;height:39px;border-radius:11px}.logo-icon svg{width:24px;height:24px}.header-note{font-size:12px;color:var(--muted);border-left:1px solid var(--line);padding-left:20px}.tabs{display:flex;gap:28px;overflow-x:auto;white-space:nowrap;scrollbar-width:thin}.tabs a{padding:12px 4px;border-bottom:3px solid transparent;font-size:14px;font-weight:600;color:var(--muted)}.tabs a:hover{color:var(--brand)}.tabs .active{border-color:var(--brand);color:var(--brand)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:12px 21px;border-radius:10px;border:1px solid transparent;background:var(--brand);color:#fff;font-weight:600;font-size:14px;line-height:1.6}.btn:hover{background:#1248bb;box-shadow:0 6px 17px #1859df24;transform:translateY(-2px)}.btn-light{background:#fff;color:var(--brand);border-color:var(--line)}.btn-light:hover{background:#edf4ff}.btn-small{padding:9px 15px;font-size:13px}.section{padding:76px 0;border-bottom:1px solid #e9eef6}.section-soft{background:var(--bg)}.eyebrow{display:flex;align-items:center;gap:9px;color:var(--brand);font-size:12px;font-weight:700;letter-spacing:2px;margin-bottom:16px}.eyebrow:before{content:"";height:7px;width:7px;background:currentColor;border-radius:2px}.section h2{font-size:clamp(25px,3vw,34px);font-weight:750;line-height:1.4;letter-spacing:-.6px}.intro{max-width:780px;color:var(--muted);font-size:15px;margin:18px 0 30px;line-height:1.95}.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:27px;box-shadow:var(--shadow)}.card:hover{border-color:#b5cdf7}.card h3{font-size:18px;font-weight:700;line-height:1.5;margin-bottom:11px}.card p,.body-copy{font-size:14px;color:var(--muted);line-height:1.9}.badge{display:inline-flex;align-items:center;gap:6px;font-size:11px;font-weight:600;line-height:1.6;padding:5px 10px;border-radius:6px;background:#edf4ff;color:var(--brand)}.badge-neutral{background:#edf0f4;color:#627087}.text-link{color:var(--brand);font-size:14px;font-weight:600}.text-link:hover{color:#123c8c;text-decoration:underline;text-underline-offset:5px}.hero{padding:65px 0 48px;background:#eff5ff;position:relative;overflow:hidden}.hero:before{content:"";position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(#bed2f02e 1px,transparent 1px),linear-gradient(90deg,#bed2f02e 1px,transparent 1px);background-size:56px 56px;mask-image:linear-gradient(90deg,transparent,#000)}.hero-inner{position:relative}.hero h1{max-width:980px;font-size:clamp(34px,4.8vw,58px);font-weight:800;line-height:1.23;letter-spacing:-1.8px;margin:18px 0 24px}.hero h1 span{color:var(--brand)}.hero-copy{max-width:910px;color:#566c88;font-size:16px;line-height:2}.invite-strip{margin-top:35px;display:grid;grid-template-columns:1.2fr 1fr auto;gap:30px;align-items:center;background:#fff;border:1px solid #d6e3f7;box-shadow:var(--shadow);padding:24px 28px;border-radius:16px}.progress-track{height:6px;background:#e9eef6;border-radius:10px;margin-top:10px;overflow:hidden}.progress-fill{height:100%;background:var(--brand);width:0;transition:width .4s}.number{color:var(--brand);font-size:38px;line-height:1;font-weight:750;letter-spacing:-1px}.icon-box{width:43px;height:43px;display:grid;place-items:center;background:#edf4ff;color:var(--brand);border-radius:12px;margin-bottom:24px;font-size:18px;font-weight:700}.dark-panel{background:var(--navy);border-radius:24px;padding:38px;color:#fff;position:relative;overflow:hidden}.dark-panel p{color:#b6c5d9}.dark-panel .badge{background:#ffffff16;color:#c5daff}.signal-row{display:flex;align-items:center;justify-content:space-between;padding:17px 0;gap:15px;border-bottom:1px solid #ffffff1a;font-size:14px}.signal-row:last-child{border-bottom:0}.signal-dot{height:7px;width:7px;display:inline-block;background:#85adff;border-radius:50%;margin-right:9px}.ticket{position:relative;overflow:hidden;border:1px solid #cbdcf5;border-radius:16px;background:#fff;display:flex;flex-direction:column;box-shadow:var(--shadow)}.ticket-main{padding:27px}.ticket-foot{border-top:1px dashed #b6cae6;padding:15px 27px;background:#f8fbff;font-size:12px;color:var(--muted)}.ticket h3{font-size:19px;font-weight:700;margin:13px 0 10px}.ticket p{font-size:14px;color:var(--muted)}.ticket:before,.ticket:after{content:"";position:absolute;bottom:41px;width:16px;height:16px;border-radius:50%;background:var(--bg);border:1px solid #cbdcf5}.ticket:before{left:-9px}.ticket:after{right:-9px}.route{display:grid;grid-template-columns:repeat(4,1fr);gap:25px}.route-item{border-top:2px solid #bed2f4;padding-top:24px}.route-item h3{font-weight:700;font-size:18px;margin:16px 0 10px}.route-item p{font-size:14px;color:var(--muted)}.list-row{display:grid;grid-template-columns:100px 1fr auto;gap:25px;align-items:start;padding:25px 0;border-bottom:1px solid var(--line)}.list-row:last-child{border-bottom:none}.list-row h3{font-weight:700;font-size:18px;margin-bottom:8px}.list-row p{font-size:14px;color:var(--muted)}details{border-bottom:1px solid var(--line);padding:21px 0}summary{cursor:pointer;list-style:none;font-weight:650;font-size:16px;display:flex;justify-content:space-between;gap:20px}summary::-webkit-details-marker{display:none}summary:after{content:"+";color:var(--brand);font-size:23px;line-height:1}details[open] summary:after{content:"−"}details p{margin:15px 30px 0 0;font-size:14px;color:var(--muted);line-height:1.9}.source-link{display:flex;align-items:center;justify-content:space-between;padding:22px;background:white;border:1px solid var(--line);border-radius:12px;font-weight:650}.source-link:hover{border-color:var(--brand);color:var(--brand);box-shadow:var(--shadow)}.source-link small{display:block;font-weight:400;color:var(--muted);margin-top:5px}.cta{background:#eaf2ff;border:1px solid #cdddf6;border-radius:24px;padding:42px;display:flex;align-items:center;justify-content:space-between;gap:35px}.site-footer{padding:44px 0 24px;background:#f7f9fc;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}.footer-bottom{border-top:1px solid var(--line);margin-top:30px;padding-top:20px;display:flex;justify-content:space-between;gap:18px;font-size:12px}.site-footer a:hover{color:var(--brand)}.toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);max-width:calc(100% - 32px);width:max-content;background:var(--navy);color:white;box-shadow:var(--shadow);padding:13px 22px;border-radius:12px;font-size:14px;z-index:60}.toast[hidden]{display:none}
@media(min-width:1025px){.hero h1{max-width:970px}}
@media(max-width:1024px){.container{width:calc(100% - 48px)}.invite-strip{grid-template-columns:1fr 1fr}.invite-strip .btn{grid-column:1/-1;width:max-content}.route{gap:18px}.header-note{display:none}.section{padding:60px 0}}
@media(max-width:768px){.container{width:calc(100% - 36px)}.hero{padding:43px 0 32px}.hero h1{letter-spacing:-1px}.hero-copy{font-size:15px}.section{padding:48px 0}.invite-strip{gap:20px;padding:22px}.route{grid-template-columns:repeat(2,1fr);gap:30px 20px}.cta{padding:28px;flex-direction:column;align-items:flex-start}.dark-panel{padding:26px}.list-row{grid-template-columns:75px 1fr;gap:15px}.list-row>span:last-child{display:none}.footer-bottom{flex-direction:column}.header-top{min-height:72px}.tabs{gap:25px}}
@media(max-width:520px){.logo{font-size:17px;gap:8px}.logo-icon{width:33px;height:33px}.header-top{gap:10px}.header-top .btn{font-size:11px;padding:8px 10px}.invite-strip{grid-template-columns:1fr}.invite-strip .btn{width:100%}.hero h1{font-size:35px}.hero .eyebrow{letter-spacing:1px}.card{padding:23px}.route{grid-template-columns:1fr}.route-item{padding-top:20px}.list-row{grid-template-columns:1fr;gap:10px}.list-row .badge{width:max-content}.section h2{font-size:26px}.cta .btn{width:100%}.footer-bottom{font-size:11px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}

/* roulang page: category1 */
:root{--brand:#1859df;--navy:#162844;--muted:#63738a;--line:#dfe7f2;--paper:#fff;--bg:#f3f7fd;--radius:20px;--shadow:0 12px 35px rgba(24,56,107,.07)}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:150px}
body{margin:0;background:var(--paper);color:var(--navy);font-family:"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.8}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button,a{-webkit-tap-highlight-color:transparent}
button{cursor:pointer}
img,svg{max-width:100%;display:block}
button:disabled{cursor:default}
a,button,summary,.card{transition:background .2s,color .2s,box-shadow .2s,transform .2s,border-color .2s}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{outline:3px solid #82b1ff;outline-offset:5px}
a:active,button:active{transform:translateY(1px)}
.container{width:min(1180px,calc(100% - 64px));margin:auto}
.site-header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);box-shadow:0 3px 20px #16284405}
.header-top{min-height:83px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:flex;align-items:center;gap:12px;font-size:21px;font-weight:800;letter-spacing:-.5px}
.logo-icon{display:grid;place-items:center;background:var(--brand);color:#fff;width:39px;height:39px;border-radius:11px;flex-shrink:0}
.logo-icon svg{width:24px;height:24px}
.header-note{font-size:12px;color:var(--muted);border-left:1px solid var(--line);padding-left:20px}
.tabs{display:flex;gap:32px;overflow-x:auto;white-space:nowrap}
.tabs a{padding:12px 4px;border-bottom:3px solid transparent;font-size:14px;font-weight:600;color:var(--muted)}
.tabs a:hover,.tabs a.active{color:var(--brand)}
.tabs a.active{border-color:var(--brand)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:12px 21px;border-radius:10px;border:1px solid transparent;background:var(--brand);color:#fff;font-weight:600;font-size:14px;line-height:1.6}
.btn:hover{background:#1248bb;box-shadow:0 6px 17px #1859df24;transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--brand);border-color:var(--line)}
.btn-light:hover{background:#edf4ff}
.btn-small{padding:9px 15px;font-size:13px}
.section{padding:76px 0;border-bottom:1px solid #e9eef6}
.section-soft{background:var(--bg)}
.eyebrow{display:flex;align-items:center;gap:9px;color:var(--brand);font-size:12px;font-weight:700;letter-spacing:2px;margin-bottom:16px}
.eyebrow:before{content:"";height:7px;width:7px;background:currentColor;border-radius:2px}
.section h2{font-size:clamp(25px,3vw,34px);font-weight:750;line-height:1.4;letter-spacing:-.6px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:27px;box-shadow:var(--shadow)}
.card:hover{border-color:#b5cdf7}
.card h3{font-size:18px;font-weight:700;line-height:1.5;margin-bottom:11px}
.card p,.body-copy{font-size:14px;color:var(--muted);line-height:1.9}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:11px;font-weight:600;line-height:1.6;padding:5px 10px;border-radius:6px;background:#edf4ff;color:var(--brand)}
.badge-neutral{background:#edf0f4;color:#627087}
.text-link{color:var(--brand);font-size:14px;font-weight:600}
.text-link:hover{color:#123c8c;text-decoration:underline;text-underline-offset:5px}
.hero{padding:64px 0;background:#eff5ff;position:relative;overflow:hidden}
.hero:before{content:"";position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(#bed2f02e 1px,transparent 1px),linear-gradient(90deg,#bed2f02e 1px,transparent 1px);background-size:56px 56px;mask-image:linear-gradient(90deg,transparent,#000)}
.hero-inner{position:relative}
.hero h1{font-size:clamp(34px,4vw,50px);font-weight:800;line-height:1.3;letter-spacing:-1.8px;margin:18px 0 24px}
.hero h1 span{color:var(--brand)}
.hero-copy{color:#566c88;font-size:16px;line-height:2}
.dark-panel{background:var(--navy);color:#fff;border-radius:20px;padding:30px;box-shadow:var(--shadow)}
.dark-panel .badge{background:#ffffff16;color:#c5daff}
.signal-row{display:flex;align-items:center;justify-content:space-between;padding:17px 0;gap:15px;border-bottom:1px solid #ffffff1a;font-size:14px}
.signal-row:last-child{border-bottom:0}
.route-item{border-top:2px solid #bed2f4;padding-top:24px}
.route-item h3{font-weight:700;font-size:18px;margin:16px 0 10px}
.route-item p{font-size:14px;color:var(--muted)}
.list-row{display:grid;grid-template-columns:100px 1fr auto;gap:25px;align-items:start;padding:25px 0;border-bottom:1px solid var(--line)}
.list-row:last-child{border-bottom:none}
.list-row h3{font-weight:700;font-size:18px;margin-bottom:8px}
.list-row p{font-size:14px;color:var(--muted)}
.cta{background:#eaf2ff;border:1px solid #cdddf6;border-radius:24px;padding:42px;display:flex;align-items:center;justify-content:space-between;gap:35px}
.site-footer{padding:44px 0 24px;background:#f7f9fc;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.footer-bottom{border-top:1px solid var(--line);margin-top:30px;padding-top:20px;display:flex;justify-content:space-between;gap:18px;font-size:12px}
.site-footer a:hover{color:var(--brand)}
.topic-number{font-size:12px;color:var(--brand);font-weight:700;letter-spacing:2px;margin-bottom:22px}
.status-list{margin-top:22px;padding:0;list-style:none}
.status-list li{padding:13px 0;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:18px;font-size:13px}
.status-list li span:last-child{color:var(--muted)}
.metric{font-size:30px;font-weight:750;color:var(--brand);line-height:1.4}
.track{height:5px;border-radius:6px;background:#e5edfa;margin:18px 0}
.track span{display:block;width:28px;height:5px;border-radius:6px;background:var(--brand)}
.source-link{display:flex;justify-content:space-between;gap:20px;padding:17px 0;border-bottom:1px solid var(--line);font-weight:600}
.source-link:hover{color:var(--brand)}
.faq details{border-bottom:1px solid var(--line);padding:21px 0}
.faq summary{cursor:pointer;list-style:none;font-weight:650;display:flex;justify-content:space-between;gap:20px}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";color:var(--brand);font-size:21px}
.faq details[open] summary:after{content:"−"}
.faq details p{margin-top:15px;color:var(--muted);font-size:14px;max-width:850px}
@media(max-width:1024px){.container{width:calc(100% - 48px)}.header-note{display:none}.section{padding:60px 0}}
@media(max-width:768px){.container{width:calc(100% - 36px)}.hero{padding:43px 0 36px}.hero h1{letter-spacing:-1px}.hero-copy{font-size:15px}.section{padding:48px 0}.cta{padding:28px;flex-direction:column;align-items:flex-start}.dark-panel{padding:26px}.list-row{grid-template-columns:75px 1fr;gap:15px}.list-row>span:last-child{display:none}.footer-bottom{flex-direction:column}.header-top{min-height:72px}.tabs{gap:25px}}
@media(max-width:520px){.logo{font-size:17px;gap:8px}.logo-icon{width:33px;height:33px}.header-top{gap:10px}.header-top .btn{font-size:11px;padding:8px 10px}.hero h1{font-size:34px}.hero .eyebrow{letter-spacing:1px}.card{padding:23px}.route-item{padding-top:20px}.list-row{grid-template-columns:1fr;gap:10px}.list-row .badge{width:max-content}.section h2{font-size:26px}.cta .btn{width:100%}.footer-bottom{font-size:11px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}