/* roulang page: index */
:root{--brand:#175cd3;--brand-dark:#124aa9;--ink:#172b4d;--muted:#63738a;--line:#e1e8f1;--bg:#f5f8fc;--paper:#fff;--radius:24px;--shadow:0 12px 36px rgba(27,62,110,.07)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;background:var(--bg);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{display:block;max-width:100%;object-fit:cover}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.35}p{color:var(--muted)}a,button,.card{transition:background .2s,color .2s,transform .2s,box-shadow .2s}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #79adff;outline-offset:5px}button:active,.btn:active{transform:translateY(1px)}.container{width:min(1180px,calc(100% - 64px));margin-inline:auto}.site-header{position:relative;z-index:30;padding:22px 0 0}.nav-panel{display:flex;align-items:center;gap:32px;padding:13px 18px;background:white;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow)}.logo{display:flex;align-items:center;gap:12px;white-space:nowrap}.logo-mark{width:47px;height:47px;display:grid;place-items:center;background:var(--brand);border-radius:14px;color:white;font-size:27px;font-weight:900;letter-spacing:-2px}.logo-copy{font-size:16px;font-weight:750}.logo-copy small{display:block;font-size:11px;color:var(--muted);font-weight:400;letter-spacing:2px}.nav-links{display:flex;align-items:center;gap:8px;margin-left:auto}.nav-link{padding:10px 18px;font-size:14px;border-radius:12px;background:#f7f9fc;border:1px solid transparent}.nav-link:hover{background:#edf4ff;color:var(--brand)}.nav-link.active{background:#eaf2ff;color:var(--brand);border-color:#d7e7ff;font-weight:700}.nav-cta{font-size:13px;font-weight:700;padding:10px 14px;border-left:1px solid var(--line);color:var(--brand)}.menu-toggle{display:none;border:1px solid var(--line);border-radius:10px;padding:8px 12px;background:white}.hero{padding:30px 0 0}.hero-stage{position:relative;isolation:isolate;overflow:hidden;min-height:590px;border-radius:28px;background:#102e56;color:white;display:flex;flex-direction:column;justify-content:space-between}.hero-image{position:absolute;inset:0;width:100%;height:100%;z-index:-3;opacity:.47}.hero-stage:before{content:"";position:absolute;inset:0;z-index:-2;background:linear-gradient(90deg,rgba(10,35,70,.97) 0%,rgba(10,35,70,.84) 50%,rgba(10,35,70,.28) 100%)}.hero-content{padding:64px 64px 44px;max-width:880px}.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:12px;font-weight:700;letter-spacing:2px;color:var(--brand);margin-bottom:20px}.eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor}.hero .eyebrow{color:#bbd7ff}.hero h1{font-size:clamp(34px,4.1vw,56px);font-weight:800;letter-spacing:-1.5px;margin-bottom:26px}.hero p{font-size:15px;line-height:1.95;color:#d3e1f3;max-width:665px}.hero p+p{margin-top:13px}.hero-tabs{display:grid;grid-template-columns:repeat(4,1fr);background:rgba(255,255,255,.08);border-top:1px solid rgba(255,255,255,.18);backdrop-filter:blur(12px)}.hero-tabs a{padding:18px 24px;border-right:1px solid rgba(255,255,255,.15);font-size:14px;display:flex;align-items:center;justify-content:space-between}.hero-tabs a:hover{background:rgba(255,255,255,.13)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:15px;padding:12px 23px;border:1px solid transparent;border-radius:12px;font-size:14px;font-weight:700;background:var(--brand);color:white;min-height:48px}.btn:hover{background:var(--brand-dark);box-shadow:0 8px 20px #175cd329;transform:translateY(-2px)}.btn-white{background:white;color:var(--brand)}.btn-white:hover{background:#eaf2ff}.btn-outline{border-color:var(--line);background:white;color:var(--ink)}.btn-outline:hover{background:#edf4ff;color:var(--brand)}.section{padding:76px 0;border-bottom:1px solid var(--line)}.section-white{background:white}.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:32px}.section h2{font-size:clamp(25px,2.6vw,34px);font-weight:750;letter-spacing:-.7px}.section-head p{max-width:620px;font-size:14px;line-height:1.95}.section-head h2{min-width:250px}.label{font-size:11px;font-weight:750;letter-spacing:2px;color:var(--brand);display:block;margin-bottom:12px}.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.card:hover{box-shadow:0 16px 40px rgba(27,62,110,.11)}.card-body{padding:27px}.card h3{font-size:18px;font-weight:700}.card p{font-size:14px;line-height:1.9;margin-top:12px}.badge{display:inline-flex;align-items:center;border-radius:7px;background:#edf4ff;color:var(--brand);font-size:11px;font-weight:650;padding:4px 9px}.badge-muted{background:#f0f3f7;color:#65758c}.icon-box{width:44px;height:44px;border-radius:13px;display:grid;place-items:center;color:var(--brand);background:#edf4ff;font-size:19px;font-weight:800;margin-bottom:24px}.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:20px;overflow:hidden}.metric{background:white;padding:26px 30px}.metric strong{font-size:32px;line-height:1.2;font-weight:800;display:block;color:var(--brand)}.metric span{display:block;font-size:13px;color:var(--muted);margin-top:10px}.number{font-size:13px;color:#8ca8cd;font-weight:700;margin-bottom:22px;display:block}.feature-link{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--brand);margin-top:22px}.feature-link:hover{color:var(--brand-dark)}.rank-title{font-size:14px!important;background:#f5f8fd;padding:17px 20px;border-bottom:1px solid var(--line);line-height:1.9}.stars{color:#b48223;white-space:nowrap;font-size:12px}.score{font-size:48px;color:var(--brand);font-weight:800;line-height:1}.score small{font-size:13px;font-weight:400;color:var(--muted)}.check-list{list-style:none;padding:0;margin:22px 0}.check-list li{padding:9px 0 9px 22px;border-bottom:1px solid #eef2f6;color:var(--muted);font-size:13px;position:relative}.check-list li:before{content:"✓";color:var(--brand);position:absolute;left:0}.note{border-left:3px solid #a8c7f6;padding:10px 15px;background:#f2f7ff;color:var(--muted);font-size:12px;line-height:1.8}.compare-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:18px;background:white}.compare-table{width:100%;border-collapse:collapse;min-width:630px;text-align:left;font-size:13px}.compare-table th{background:#edf4ff;color:var(--brand);font-weight:700}.compare-table th,.compare-table td{padding:17px 22px;border-bottom:1px solid var(--line)}.compare-table tr:last-child td{border-bottom:0}.compare-table td:first-child{font-weight:700}.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}.timeline-item{border-top:2px solid #ccddf5;position:relative;padding-top:24px}.timeline-item:before{content:"";position:absolute;top:-6px;left:0;width:10px;height:10px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 5px #eef4ff}.timeline-item h3{font-size:16px;margin:12px 0}.timeline-item p{font-size:13px}.cover{height:205px;width:100%;background:#e6effa}.news-card:hover .cover{transform:scale(1.025)}.cover-wrap{overflow:hidden}.cover{transition:transform .4s}.news-row{padding:21px 0;border-bottom:1px solid var(--line);display:flex;gap:20px;align-items:flex-start}.news-row:first-child{padding-top:0}.news-row h3{font-size:16px;font-weight:700}.news-row p{font-size:13px;margin-top:9px}.coupon{position:relative;display:flex;gap:20px;align-items:center;padding:27px;border:1px dashed #a5c3ee;border-radius:20px;background:#f4f8ff;overflow:hidden}.coupon-symbol{font-size:39px;font-weight:800;color:var(--brand);border-right:1px dashed #bdd1ed;padding-right:23px}.coupon h3{font-size:17px;font-weight:700}.coupon p{font-size:13px;margin-top:7px}.coupon:after{content:"";position:absolute;width:20px;height:20px;background:white;border:1px dashed #a5c3ee;border-radius:50%;right:-11px;top:calc(50% - 10px)}.dark-band{background:#123565;color:white;border-radius:24px;padding:36px}.dark-band p{color:#c2d2e8}.guarantee{display:flex;gap:14px;align-items:flex-start}.guarantee strong{display:block;font-size:15px}.guarantee p{font-size:13px;margin-top:8px}.faq details{border-bottom:1px solid var(--line);padding:22px 0}.faq details:first-child{padding-top:0}.faq summary{list-style:none;font-size:16px;font-weight:650;cursor:pointer;display:flex;justify-content:space-between;gap:20px}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"+";color:var(--brand);font-size:22px;line-height:1}.faq details[open] summary:after{content:"−"}.faq details p{font-size:14px;line-height:1.95;margin-top:16px;max-width:850px}.form-panel{background:white;border:1px solid var(--line);border-radius:24px;padding:36px;box-shadow:var(--shadow)}.field label{display:block;font-size:13px;font-weight:700;margin-bottom:8px}.field select,.field textarea{width:100%;background:#f8fafc;border:1px solid #d8e2f0;border-radius:10px;padding:12px 14px;color:var(--ink)}.field textarea{resize:vertical;min-height:132px}.field select:focus,.field textarea:focus{background:white;border-color:var(--brand)}.field small{display:block;color:var(--muted);font-size:12px;margin-top:7px}.form-result{margin-top:20px;padding:17px;background:#eef5ff;border:1px solid #cbdfff;border-radius:12px;white-space:pre-wrap;font-size:13px}.site-footer{padding:45px 0 26px;background:#fff;border-top:1px solid var(--line)}.footer-top{display:flex;justify-content:space-between;gap:30px;align-items:center;margin-bottom:30px}.footer-links{display:flex;gap:24px;font-size:13px;color:var(--muted)}.footer-links a:hover{color:var(--brand)}.footer-bottom{border-top:1px solid var(--line);padding-top:23px;display:flex;justify-content:space-between;gap:20px;font-size:12px;color:var(--muted)}.skip-link{position:absolute;top:-100px;left:20px;background:white;padding:10px 20px;z-index:100}.skip-link:focus{top:10px}.category-hero{padding:70px 0;background:#ecf3ff;border-bottom:1px solid #dae6f6}.category-hero h1{font-size:44px;font-weight:800;margin-bottom:22px}.category-hero p{max-width:760px}.reading{max-width:820px}.reading h3{font-size:18px;margin:28px 0 12px}.reading p{font-size:15px;line-height:2}.reading ul{margin-top:20px}
@media(min-width:1280px){.hero-stage{min-height:620px}}
@media(max-width:1024px){.container{width:calc(100% - 40px)}.hero-content{padding:48px 40px}.section{padding:58px 0}.section-head{gap:24px}.section-head h2{min-width:220px}.nav-panel{gap:15px}.metric{padding:23px}.timeline{gap:20px}.rank-title{padding:15px}.card-body{padding:22px}}
@media(max-width:768px){.section-head{display:block}.section-head p{margin-top:18px}.hero-content{padding:40px 30px}.hero-stage{min-height:auto}.hero-tabs{grid-template-columns:repeat(2,1fr)}.hero-tabs a{padding:15px 20px;border-bottom:1px solid #ffffff1f}.metrics{grid-template-columns:repeat(2,1fr)}.timeline{grid-template-columns:repeat(2,1fr);gap:36px}.nav-cta{display:none}.footer-top,.footer-bottom{align-items:flex-start;flex-direction:column}.section{padding:48px 0}.category-hero h1{font-size:34px}}
@media(max-width:520px){.container{width:calc(100% - 28px)}.site-header{padding-top:12px}.nav-panel{flex-wrap:wrap;padding:12px;border-radius:16px;gap:12px}.logo-copy{font-size:14px}.logo-mark{width:40px;height:40px;font-size:25px}.menu-toggle{display:block;margin-left:auto}.nav-links{display:none;width:100%;margin:0;grid-template-columns:1fr 1fr}.nav-links.open{display:grid}.nav-link{text-align:center;padding:10px;font-size:13px}.hero{padding-top:16px}.hero-stage{border-radius:20px}.hero-content{padding:33px 23px}.hero h1{font-size:33px;letter-spacing:-1px}.hero p{font-size:14px}.hero-tabs a{font-size:12px;padding:14px}.metric{padding:20px}.metric strong{font-size:27px}.timeline{gap:28px 20px}.form-panel{padding:23px}.dark-band{padding:25px}.coupon{padding:22px;gap:16px}.coupon-symbol{font-size:32px;padding-right:18px}.footer-links{gap:16px;flex-wrap:wrap}.section-head h2{min-width:0}.category-hero{padding:45px 0}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* roulang page: category1 */
:root{--brand:#175cd3;--brand-dark:#124aa9;--ink:#172b4d;--muted:#63738a;--line:#e1e8f1;--bg:#f5f8fc;--paper:#fff;--radius:24px;--shadow:0 12px 36px rgba(27,62,110,.07)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0;background:var(--bg);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{display:block;max-width:100%;object-fit:cover}a,button,.card{transition:background .2s,color .2s,transform .2s,box-shadow .2s}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #79adff;outline-offset:5px}button:active,.btn:active{transform:translateY(1px)}.container{width:min(1180px,calc(100% - 64px));margin-inline:auto}
.site-header{position:relative;z-index:30;padding:22px 0 0}.nav-panel{display:flex;align-items:center;gap:32px;padding:13px 18px;background:white;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow)}.logo{display:flex;align-items:center;gap:12px;white-space:nowrap}.logo-mark{width:47px;height:47px;display:grid;place-items:center;background:var(--brand);border-radius:14px;color:white;font-size:27px;font-weight:900;letter-spacing:-2px}.logo-copy{font-size:16px;font-weight:750}.logo-copy small{display:block;font-size:11px;color:var(--muted);font-weight:400;letter-spacing:2px}.nav-links{display:flex;align-items:center;gap:8px;margin-left:auto}.nav-link{padding:10px 18px;font-size:14px;border-radius:12px;background:#f7f9fc;border:1px solid transparent}.nav-link:hover{background:#edf4ff;color:var(--brand)}.nav-link.active{background:#eaf2ff;color:var(--brand);border-color:#d7e7ff;font-weight:700}.nav-cta{font-size:13px;font-weight:700;padding:10px 14px;border-left:1px solid var(--line);color:var(--brand)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:15px;padding:12px 23px;border:1px solid transparent;border-radius:12px;font-size:14px;font-weight:700;background:var(--brand);color:white;min-height:48px}.btn:hover{background:var(--brand-dark);box-shadow:0 8px 20px #175cd329;transform:translateY(-2px)}.btn-outline{border-color:var(--line);background:white;color:var(--ink)}.btn-outline:hover{background:#edf4ff;color:var(--brand)}
.section{padding:76px 0;border-bottom:1px solid var(--line)}.section-white{background:white}.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:32px}.section h2{font-size:clamp(25px,2.6vw,34px);font-weight:750;letter-spacing:-.7px}.section-head p{max-width:540px;font-size:14px;line-height:1.95;color:var(--muted)}.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:12px;font-weight:700;letter-spacing:2px;color:var(--brand);margin-bottom:16px}.eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.card:hover{box-shadow:0 16px 40px rgba(27,62,110,.11)}.card-body{padding:27px}.card h3{font-size:18px;font-weight:700}.card p{font-size:14px;line-height:1.9;margin-top:12px;color:var(--muted)}.badge{display:inline-flex;align-items:center;border-radius:7px;background:#edf4ff;color:var(--brand);font-size:11px;font-weight:650;padding:4px 9px}.check-list{list-style:none;padding:0;margin:22px 0}.check-list li{padding:9px 0 9px 22px;border-bottom:1px solid #eef2f6;color:var(--muted);font-size:13px;position:relative}.check-list li:before{content:"✓";color:var(--brand);position:absolute;left:0}
.topic-hero{padding:48px 0 64px}.breadcrumb{font-size:12px;color:var(--muted);margin-bottom:28px}.breadcrumb a:hover{color:var(--brand)}.topic-hero h1{font-size:clamp(34px,4.5vw,54px);font-weight:800;line-height:1.22;letter-spacing:-1.5px;margin-bottom:24px}.intro p{color:var(--muted);font-size:15px;margin-top:15px;line-height:1.95}.stage{padding:22px;background:#eaf2ff;border:1px solid #d8e6fa;border-radius:28px;position:relative}.stage img{width:100%;height:225px;border-radius:16px}.stage-caption{background:white;border-radius:14px;padding:18px;margin-top:16px;display:flex;justify-content:space-between;align-items:center;gap:16px}.stage-caption strong{font-size:18px}.stage-caption small{display:block;color:var(--muted);font-size:12px}.metric{padding:23px 26px;border-right:1px solid var(--line)}.metric:last-child{border:0}.metric strong{display:block;font-size:26px;color:var(--brand);font-weight:750}.metric span{font-size:13px;color:var(--muted)}.matrix-number{font-size:13px;color:var(--brand);font-weight:700;background:#eaf2ff;width:36px;height:36px;display:grid;place-items:center;border-radius:10px;margin-bottom:22px}
.compare{overflow:auto;border:1px solid var(--line);border-radius:20px;background:white}table{border-collapse:collapse;width:100%;min-width:650px;text-align:left;font-size:14px}th,td{padding:20px 24px;border-bottom:1px solid var(--line)}th{background:#edf4ff;font-weight:700;color:var(--brand)}td{color:var(--muted)}td:first-child{color:var(--ink);font-weight:650}tr:last-child td{border-bottom:0}
.timeline-item{border-top:2px solid #ccddf5;position:relative;padding-top:24px}.timeline-item:before{content:"";position:absolute;top:-6px;left:0;width:10px;height:10px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 5px #eef4ff}.timeline-item h3{font-size:16px;font-weight:700;margin:12px 0}.timeline-item p{font-size:13px;color:var(--muted)}.news-row{padding:24px 0;border-bottom:1px solid var(--line);display:flex;gap:24px;align-items:flex-start}.news-row:first-child{padding-top:0}.news-row h3{font-size:18px;font-weight:700}.news-row p{font-size:14px;margin-top:9px;color:var(--muted)}.news-index{font-size:24px;font-weight:700;color:#a9bedb}.assurance{background:#102e56;color:white}.assurance p{color:#cad9ec}.assurance .eyebrow{color:#abcfff}.assurance-item{padding:25px 0;border-bottom:1px solid #ffffff24}.assurance-item:first-child{padding-top:0}.assurance-item h3{font-size:17px;font-weight:700;margin-bottom:8px}.quick-item{padding:24px;border:1px solid var(--line);border-radius:16px;background:white}.quick-item p{font-size:14px;color:var(--muted);margin-top:10px}.quick-item h3{font-weight:700}
.faq details{border-bottom:1px solid var(--line);padding:22px 0}.faq details:first-child{padding-top:0}.faq summary{list-style:none;font-size:16px;font-weight:650;cursor:pointer;display:flex;justify-content:space-between;gap:20px}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"+";color:var(--brand);font-size:22px;line-height:1}.faq details[open] summary:after{content:"−"}.faq details p{font-size:14px;line-height:1.95;margin-top:16px;max-width:850px;color:var(--muted)}
.form-panel{background:white;border:1px solid var(--line);border-radius:24px;padding:36px;box-shadow:var(--shadow)}.field select,.field textarea{width:100%;background:#f8fafc;border:1px solid #d8e2f0;border-radius:10px;padding:12px;color:var(--ink)}.field label{display:block;font-size:14px;font-weight:650;margin-bottom:9px}.field textarea{min-height:110px;resize:vertical}.field{margin-bottom:20px}.form-note{font-size:12px;color:var(--muted);margin-top:16px}.site-footer{padding:48px 0 24px;background:white}.footer-top{display:flex;align-items:center;justify-content:space-between;gap:28px;padding-bottom:32px}.footer-links{display:flex;flex-wrap:wrap;gap:24px;font-size:13px;color:var(--muted)}.footer-links a:hover{color:var(--brand)}.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);padding-top:24px;font-size:12px;color:var(--muted)}
@media(max-width:1024px){.nav-panel{gap:16px}.nav-cta{display:none}.section{padding:60px 0}.stage img{height:210px}.metric{padding:20px}.section-head{gap:24px}}
@media(max-width:768px){.container{width:calc(100% - 40px)}.nav-panel{flex-wrap:wrap}.nav-links{margin-left:auto}.section-head{display:block}.section-head p{margin-top:16px}.topic-hero{padding-top:30px}.footer-top,.footer-bottom{align-items:flex-start;flex-direction:column}.metric:nth-child(2){border-right:0}.metric:nth-child(-n+2){border-bottom:1px solid var(--line)}.form-panel{padding:26px}}
@media(max-width:520px){.container{width:calc(100% - 28px)}.site-header{padding-top:14px}.nav-panel{padding:14px;gap:16px}.nav-links{width:100%;margin:0}.nav-link{flex:1;text-align:center;padding:9px}.logo-copy{font-size:15px}.section{padding:46px 0}.topic-hero h1{font-size:36px}.stage{padding:14px}.stage img{height:185px}.card-body{padding:23px}.metric strong{font-size:23px}.metric{padding:18px}.footer-links{gap:16px}.form-panel{padding:22px}.btn{padding:12px 18px}.news-row{gap:16px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}