/* roulang page: index */
:root{--blue:#2459a6;--blue-dark:#173f7b;--blue-pale:#eaf2ff;--ink:#172337;--muted:#66758a;--line:#e1e7ef;--paper:#fff;--wash:#f5f8fc;--coral:#d46b52;--green:#267957;--shadow:0 10px 30px rgba(28,55,92,.08);--radius:8px;--container:1180px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:86px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.7}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font:inherit}
.container{width:min(var(--container),calc(100% - 48px));margin-inline:auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.nav-wrap{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:11px;font-weight:750;font-size:18px;white-space:nowrap}
.brand-mark{width:36px;height:36px;display:grid;place-items:center;border-radius:7px;background:var(--blue);color:white;font-size:13px;letter-spacing:0}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{font-size:14px;color:#43536a;padding:10px 0;border-bottom:2px solid transparent;transition:color .18s,border-color .18s}
.nav-links a:hover,.nav-links a:focus-visible{color:var(--blue);border-color:var(--blue)}
.menu-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:7px;background:#fff;color:var(--ink);cursor:pointer}
.menu-toggle:focus-visible,.btn:focus-visible,.nav-links a:focus-visible,summary:focus-visible{outline:3px solid #9fc2fb;outline-offset:3px}
.hero{position:relative;isolation:isolate;min-height:520px;display:flex;align-items:center;color:#fff;background:#17283d url("https://images.unsplash.com/photo-1489599849927-2ee91cede3ba?auto=format&fit=crop&w=2000&q=88") center 48%/cover no-repeat}
.hero:before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(13,27,44,.88) 0%,rgba(13,27,44,.62) 48%,rgba(13,27,44,.18) 100%)}
.hero-inner{padding-top:55px;padding-bottom:48px}
.hero-copy{max-width:720px}
.hero-kicker{display:inline-flex;align-items:center;gap:9px;color:#d8e7ff;font-size:13px;font-weight:650}
.live-dot{width:8px;height:8px;background:#f2a27d;border-radius:50%;box-shadow:0 0 0 5px rgba(242,162,125,.17)}
.hero h1{font-size:48px;line-height:1.18;margin:16px 0 12px;font-weight:780}
.hero h1 em{font-style:normal;color:#a9ccff}
.hero-subtitle{font-size:20px;margin:0 0 12px;color:#f5f8ff}
.hero-description{max-width:650px;margin:0;color:#dce5f1;font-size:15px}
.hero-actions{display:flex;gap:12px;margin-top:25px}
.btn{min-height:46px;padding:11px 19px;display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:6px;border:1px solid transparent;font-weight:650;transition:background .18s,border-color .18s,box-shadow .18s}
.btn-primary{background:#fff;color:var(--blue-dark)}
.btn-primary:hover{background:#e9f1ff;box-shadow:0 5px 15px rgba(0,0,0,.15)}
.btn-ghost{color:#fff;border-color:rgba(255,255,255,.62);background:rgba(255,255,255,.06)}
.btn-ghost:hover{background:rgba(255,255,255,.16);border-color:#fff}
.btn:active{transform:translateY(1px)}
.hero-foot{margin-top:30px;display:flex;gap:25px;flex-wrap:wrap;color:#e4edf8;font-size:13px}
.hero-foot span{display:flex;align-items:center;gap:8px}
.hero-foot b{color:#fff;font-size:15px}
.section{padding:68px 0}
.section-soft{background:var(--wash)}
.section-blue{background:#edf4ff}
.section-head{max-width:760px;margin-bottom:30px}
.eyebrow{display:block;color:var(--blue);font-size:12px;font-weight:750;letter-spacing:0;margin-bottom:8px}
.section h2{font-size:29px;line-height:1.3;margin:0 0 11px;font-weight:750}
.section-intro{margin:0;color:var(--muted);max-width:720px}
.section-rule{height:1px;background:var(--line);margin-top:28px}
.pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.pain-item{padding:22px 26px 22px 0;display:flex;gap:15px;border-right:1px solid var(--line)}
.pain-item:not(:first-child){padding-left:25px}
.pain-item:last-child{border-right:0}
.pain-num{font-size:13px;font-weight:750;color:var(--coral);padding-top:2px}
.pain-item h3{font-size:16px;margin:0 0 5px}
.pain-item p{font-size:13px;color:var(--muted);margin:0}
.solution-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:54px;align-items:center}
.solution-art{min-height:310px;position:relative;background:#dae7f5;overflow:hidden;border-radius:var(--radius)}
.solution-art img{width:100%;height:310px;object-fit:cover}
.art-label{position:absolute;left:18px;bottom:18px;padding:9px 13px;border-radius:5px;color:#fff;background:rgba(19,37,59,.82);font-size:13px}
.solution-list{display:grid;gap:18px;margin-top:23px}
.solution-row{display:grid;grid-template-columns:38px 1fr;gap:13px}
.solution-index{width:34px;height:34px;display:grid;place-items:center;background:var(--blue-pale);color:var(--blue);border-radius:6px;font-weight:750}
.solution-row h3{font-size:16px;margin:0 0 3px}
.solution-row p{font-size:13px;color:var(--muted);margin:0}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;counter-reset:step}
.step{position:relative;padding:12px 24px 12px 0;border-top:1px solid #cbd9ed}
.step:not(:last-child):after{content:"";position:absolute;right:13px;top:-4px;width:7px;height:7px;border-radius:50%;background:var(--blue)}
.step-number{color:var(--blue);font-size:13px;font-weight:750}
.step h3{font-size:16px;margin:12px 0 6px}
.step p{font-size:13px;color:var(--muted);margin:0}
.movie-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:24px 17px}
.movie-card{min-width:0}
.poster{position:relative;aspect-ratio:2/3;border-radius:6px;overflow:hidden;background:#dce3ec;box-shadow:var(--shadow)}
.poster img{width:100%;height:100%;object-fit:cover;transition:transform .25s}
.movie-card:hover .poster img{transform:scale(1.035)}
.badge{position:absolute;top:9px;left:9px;padding:3px 7px;border-radius:4px;color:#fff;background:rgba(31,83,145,.94);font-size:10px;font-weight:700}
.badge-warm{background:rgba(166,84,57,.95)}
.movie-info{padding-top:9px}
.movie-title{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:700;font-size:14px}
.movie-meta{display:flex;justify-content:space-between;align-items:center;gap:6px;color:var(--muted);font-size:12px;margin-top:3px}
.rating{color:#a15b28;font-weight:700}
.section-topline{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:28px}
.text-link{color:var(--blue);font-weight:650;border-bottom:1px solid #b4c9e7;padding-bottom:3px}
.text-link:hover{color:var(--blue-dark);border-color:var(--blue-dark)}
.featured-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.featured{display:grid;grid-template-columns:100px 1fr;min-height:138px;background:#fff;border:1px solid var(--line);border-radius:7px;overflow:hidden;transition:box-shadow .2s,border-color .2s}
.featured:hover{box-shadow:var(--shadow);border-color:#cbd9ed}
.featured img{width:100%;height:100%;min-height:138px;object-fit:cover}
.featured-copy{padding:15px 14px}
.featured-copy h3{font-size:16px;margin:0 0 6px}
.featured-copy p{font-size:12px;color:var(--muted);margin:0 0 10px}
.tag{display:inline-block;padding:3px 7px;background:#f1f4f8;color:#526176;border-radius:4px;font-size:11px}
.stats-band{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid #cddbef;border-bottom:1px solid #cddbef}
.stat{padding:24px 20px 22px 0;border-right:1px solid #cddbef}
.stat:not(:first-child){padding-left:24px}
.stat:last-child{border-right:0}
.stat strong{display:block;color:var(--blue-dark);font-size:30px;line-height:1.2}
.stat span{display:block;color:#53657c;font-size:13px;margin-top:7px}
.note{margin:14px 0 0;color:#78869a;font-size:12px}
.quotes{display:grid;grid-template-columns:1fr 1fr;gap:25px}
.quote{margin:0;padding:20px 22px;border-left:3px solid #82a9db;background:#fff}
.quote p{margin:0 0 11px;color:#354459;font-size:15px}
.quote cite{font-style:normal;font-size:12px;color:#77869a}
.scenario-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.scenario{padding-top:17px;border-top:2px solid var(--blue)}
.scenario small{color:var(--blue);font-weight:750}
.scenario h3{font-size:16px;margin:8px 0 6px}
.scenario p{font-size:13px;color:var(--muted);margin:0}
.category-layout{display:grid;grid-template-columns:.78fr 1.22fr;gap:55px;align-items:start}
.category-list{display:grid;grid-template-columns:1fr 1fr;gap:0 28px}
.category{display:block;padding:16px 0;border-bottom:1px solid var(--line)}
.category strong{display:block;font-size:16px;margin-bottom:4px}
.category span{font-size:12px;color:var(--muted);line-height:1.65}
.category:hover strong{color:var(--blue)}
.ranking{display:grid;grid-template-columns:1fr 1fr;gap:0 44px}
.rank-row{display:grid;grid-template-columns:36px minmax(0,1fr) 55px 44px;align-items:center;gap:10px;padding:13px 0;border-bottom:1px solid var(--line)}
.rank-no{font-size:19px;font-weight:780;color:#8190a3}
.rank-row:nth-child(-n+3) .rank-no{color:var(--coral)}
.rank-name{font-weight:650;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rank-type{font-size:11px;color:var(--muted)}
.rank-heat,.rank-score{font-size:12px;text-align:right;color:#536176}
.rank-score{font-weight:750;color:#a15b28}
.news-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:40px}
.news-feature{position:relative;min-height:310px;border-radius:7px;overflow:hidden;background:#273b51}
.news-feature img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.news-feature:after{content:"";position:absolute;inset:35% 0 0;background:linear-gradient(transparent,rgba(12,27,44,.87))}
.news-feature-copy{position:absolute;z-index:1;left:22px;right:22px;bottom:20px;color:#fff}
.news-feature-copy time{font-size:12px;color:#d8e4f2}
.news-feature-copy h3{font-size:20px;margin:5px 0 0}
.news-list{display:grid;align-content:start}
.news-item{display:grid;grid-template-columns:94px 1fr;gap:14px;padding:12px 0;border-bottom:1px solid var(--line)}
.news-item:first-child{padding-top:0}
.news-item img{width:94px;height:68px;object-fit:cover;border-radius:5px}
.news-item h3{font-size:14px;line-height:1.5;margin:0 0 5px}
.news-item time{font-size:11px;color:#8792a1}
.faq-list{max-width:900px;border-top:1px solid var(--line)}
.faq-list details{border-bottom:1px solid var(--line)}
.faq-list summary{position:relative;list-style:none;cursor:pointer;padding:18px 38px 18px 0;font-size:15px;font-weight:700}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:after{content:"＋";position:absolute;right:5px;top:15px;color:var(--blue);font-size:20px}
.faq-list details[open] summary:after{content:"−"}
.faq-answer{padding:0 40px 18px 0;color:var(--muted);font-size:14px}
.final-cta{background:#eaf2ff;padding:42px 0}
.cta-inner{display:flex;justify-content:space-between;align-items:center;gap:24px}
.cta-inner h2{font-size:25px;margin:0 0 6px}
.cta-inner p{margin:0;color:#5d6f85}
.btn-blue{background:var(--blue);color:#fff}
.btn-blue:hover{background:var(--blue-dark);box-shadow:0 5px 15px rgba(36,89,166,.2)}
.site-footer{background:#f4f7fb;border-top:1px solid var(--line);padding:42px 0 18px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:35px}
.footer-brand p{max-width:275px;font-size:13px;color:var(--muted);margin:13px 0 0}
.footer-col h3{font-size:13px;margin:0 0 12px}
.footer-col a{display:block;width:fit-content;color:#657389;font-size:13px;margin:7px 0}
.footer-col a:hover{color:var(--blue)}
.footer-bottom{display:flex;justify-content:space-between;gap:15px;border-top:1px solid var(--line);margin-top:28px;padding-top:15px;color:#7d8999;font-size:12px}
@media(max-width:1024px){
 .container{width:min(100% - 40px,var(--container))}
 .nav-links{gap:16px}
 .movie-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
 .featured-grid{grid-template-columns:repeat(2,1fr)}
 .scenario-grid{grid-template-columns:repeat(2,1fr);row-gap:25px}
 .category-layout{gap:30px}
}
@media(max-width:768px){
 html{scroll-padding-top:72px}
 .container{width:calc(100% - 36px)}
 .nav-wrap{height:64px}
 .menu-toggle{display:grid;place-items:center}
 .menu-toggle span{font-size:20px;line-height:1}
 .nav-links{display:none;position:absolute;top:63px;left:0;right:0;padding:10px 18px 16px;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 12px 20px rgba(28,55,92,.08);flex-direction:column;align-items:stretch;gap:0}
 .nav-links.is-open{display:flex}
 .nav-links a{padding:11px 3px;border-bottom:1px solid #eef1f5}
 .hero{min-height:470px;background-position:57% center}
 .hero:before{background:linear-gradient(90deg,rgba(13,27,44,.86),rgba(13,27,44,.5))}
 .hero h1{font-size:38px}
 .hero-subtitle{font-size:18px}
 .section{padding:54px 0}
 .section h2{font-size:25px}
 .solution-grid,.category-layout,.news-layout{grid-template-columns:1fr;gap:27px}
 .solution-art img{height:260px}
 .pain-grid{grid-template-columns:1fr}
 .pain-item,.pain-item:not(:first-child){padding:16px 0;border-right:0;border-bottom:1px solid var(--line)}
 .pain-item:last-child{border-bottom:0}
 .steps{grid-template-columns:repeat(2,1fr);gap:22px 18px}
 .step:nth-child(2):after{display:none}
 .stats-band{grid-template-columns:repeat(2,1fr)}
 .stat:nth-child(2){border-right:0}
 .stat:nth-child(n+3){border-top:1px solid #cddbef}
 .stat:nth-child(3){padding-left:0}
 .quotes{grid-template-columns:1fr}
 .ranking{grid-template-columns:1fr;gap:0}
 .news-feature{min-height:260px}
 .footer-grid{grid-template-columns:1fr 1fr}
 .cta-inner{align-items:flex-start;flex-direction:column}
}
@media(max-width:520px){
 .container{width:calc(100% - 32px)}
 .brand{font-size:16px}
 .hero{min-height:495px}
 .hero-inner{padding-top:42px;padding-bottom:35px}
 .hero h1{font-size:33px}
 .hero-subtitle{font-size:17px}
 .hero-description{font-size:14px}
 .hero-actions{flex-wrap:wrap}
 .hero-foot{gap:12px 18px}
 .section{padding:44px 0}
 .section h2{font-size:23px}
 .section-topline{align-items:flex-start;flex-direction:column;gap:8px}
 .movie-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:19px 13px}
 .featured-grid{grid-template-columns:1fr}
 .featured{grid-template-columns:93px 1fr}
 .featured img{min-height:126px}
 .scenario-grid{grid-template-columns:1fr 1fr;gap:22px 15px}
 .category-list{grid-template-columns:1fr}
 .rank-row{grid-template-columns:30px minmax(0,1fr) 47px 38px;gap:7px}
 .rank-no{font-size:17px}
 .rank-name{font-size:13px}
 .rank-type,.rank-heat,.rank-score{font-size:11px}
 .news-item{grid-template-columns:82px 1fr;gap:11px}
 .news-item img{width:82px;height:62px}
 .stats-band .stat{padding:18px 10px 18px 0}
 .stats-band .stat:nth-child(even){padding-left:15px}
 .stat strong{font-size:26px}
 .footer-grid{gap:24px 16px}
 .footer-brand{grid-column:1/-1}
 .footer-bottom{flex-direction:column}
 .btn{min-height:44px}
}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important}}