/* roulang page: index */
:root{
  --ink:#20242d;--muted:#737985;--paper:#fbfaf7;--white:#fff;
  --orange:#f46b45;--orange-dark:#d95431;--yellow:#ffc857;--mint:#dff3e8;
  --blue:#dfeafb;--line:#e8e4dc;--navy:#252d42;--radius:24px;
  --shadow:0 18px 48px rgba(37,45,66,.10);--soft-shadow:0 8px 24px rgba(37,45,66,.07);
  --ease:all .25s ease;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);line-height:1.75;font-size:16px}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit}
button{cursor:pointer;border:0}
img{max-width:100%;display:block}
.container{width:min(1160px,calc(100% - 40px));margin:auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(251,250,247,.92);backdrop-filter:blur(16px);border-bottom:1px solid rgba(232,228,220,.8)}
.header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.03em;font-size:18px}
.logo-mark{width:34px;height:34px;border-radius:11px;background:var(--orange);display:grid;place-items:center;color:#fff;font-size:18px;box-shadow:4px 4px 0 var(--yellow)}
.top-nav{display:flex;align-items:center;gap:9px}
.top-nav a{padding:9px 17px;border-radius:30px;color:var(--muted);font-weight:650;transition:var(--ease)}
.top-nav a:hover,.top-nav a.active{background:var(--navy);color:#fff}
.header-note{font-size:13px;color:var(--muted);white-space:nowrap}
.hero{padding:72px 0 48px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1fr 1.25fr 1fr;align-items:center;gap:30px}
.eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:7px;color:var(--orange-dark);font-size:13px;font-weight:800;letter-spacing:.08em}
.eyebrow:before,.section-kicker:before{content:"";width:22px;height:3px;background:var(--orange);border-radius:8px}
.hero h1{font-size:clamp(36px,4vw,59px);line-height:1.12;letter-spacing:-.055em;margin:17px 0 19px}
.hero-intro{color:var(--muted);font-size:17px;max-width:390px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:27px}
.btn{display:inline-flex;justify-content:center;align-items:center;gap:8px;padding:12px 20px;border-radius:14px;font-weight:750;transition:var(--ease);border:1px solid transparent}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 9px 20px rgba(244,107,69,.22)}
.btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px)}
.btn-light{background:#fff;border-color:var(--line)}
.btn-light:hover{border-color:var(--orange);color:var(--orange-dark)}
.hero-facts{display:flex;gap:18px;margin-top:27px;color:var(--muted);font-size:13px}
.hero-facts strong{display:block;color:var(--ink);font-size:20px;line-height:1.2}
.stage{position:relative;min-height:410px;display:grid;place-items:center}
.stage:before{content:"";position:absolute;width:330px;height:330px;background:var(--yellow);border-radius:48% 52% 44% 56%;transform:rotate(-12deg);opacity:.72}
.screen{position:relative;width:290px;height:355px;background:var(--navy);border:10px solid #fff;border-radius:20px;box-shadow:var(--shadow);overflow:hidden;transform:rotate(3deg)}
.screen-top{height:38px;padding:8px 13px;display:flex;justify-content:space-between;color:#cbd3e8;font-size:11px;border-bottom:1px solid rgba(255,255,255,.12)}
.poster{height:180px;margin:13px;border-radius:13px;background:linear-gradient(140deg,#ed8060,#6c5065 48%,#25344f);position:relative;overflow:hidden}
.poster:after{content:"";position:absolute;inset:35% -15% -25%;background:rgba(255,200,87,.62);transform:rotate(-13deg)}
.poster-copy{position:absolute;z-index:1;left:16px;top:14px;color:white;font-size:25px;font-weight:850;line-height:1.18;letter-spacing:-.05em}
.screen-content{padding:0 15px;color:#fff}
.screen-content h3{font-size:16px;margin-bottom:5px}
.screen-content p{color:#aeb7cb;font-size:12px;line-height:1.5}
.progress{height:5px;background:#536078;border-radius:5px;margin-top:15px}.progress i{display:block;width:68%;height:100%;background:var(--orange);border-radius:5px}
.hero-side{align-self:end;padding-bottom:35px}
.side-note{border-left:3px solid var(--orange);padding-left:17px;color:var(--muted);font-size:14px;margin-bottom:27px}
.side-note strong{display:block;color:var(--ink);font-size:18px;margin-bottom:5px}
.pill-nav{display:flex;gap:10px;overflow-x:auto;padding:13px 0 6px;scrollbar-width:none;border-top:1px solid var(--line)}
.pill-nav::-webkit-scrollbar{display:none}
.pill-nav a{flex:0 0 auto;padding:8px 16px;border:1px solid var(--line);border-radius:30px;color:var(--muted);font-size:14px;background:#fff;transition:var(--ease)}
.pill-nav a:hover,.pill-nav a.active{background:var(--orange);border-color:var(--orange);color:#fff}
.section{padding:88px 0}
.section-head{max-width:660px;margin-bottom:34px}
.section-head h2{font-size:clamp(28px,3vw,42px);line-height:1.2;letter-spacing:-.04em;margin:10px 0 13px}
.section-head p{color:var(--muted);font-size:16px}
.feature-band{background:var(--mint)}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feature-card{padding:27px;background:rgba(255,255,255,.8);border:1px solid rgba(255,255,255,.9);border-radius:var(--radius);transition:var(--ease)}
.feature-card:hover{transform:translateY(-5px);box-shadow:var(--soft-shadow)}
.icon{width:43px;height:43px;display:grid;place-items:center;background:var(--navy);color:#fff;border-radius:14px;font-size:20px;margin-bottom:20px}
.feature-card h3{font-size:20px;margin-bottom:8px}.feature-card p{color:var(--muted);font-size:14px;line-height:1.7}
.data-strip{background:var(--navy);color:#fff;padding:34px 0}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.data-item{border-left:1px solid rgba(255,255,255,.2);padding-left:25px}.data-item:first-child{border-left:0}
.data-item strong{font-size:34px;letter-spacing:-.05em;color:var(--yellow);display:block;line-height:1.25}.data-item span{font-size:14px;color:#cbd2e0}
.lead-section{background:#fff}
.form-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:60px;align-items:start}
.form-copy h2{font-size:36px;line-height:1.25;margin:10px 0 16px;letter-spacing:-.04em}
.form-copy p{color:var(--muted);font-size:15px}
.form-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--soft-shadow)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:15px}
.field{margin-bottom:16px}.field label{display:block;font-weight:700;font-size:14px;margin-bottom:6px}
.field input,.field textarea{width:100%;border:1px solid var(--line);background:#fff;border-radius:12px;padding:11px 13px;outline:0;transition:var(--ease)}
.field textarea{min-height:92px;resize:vertical}.field input:focus,.field textarea:focus{border-color:var(--orange);box-shadow:0 0 0 4px rgba(244,107,69,.12)}
.form-tip{color:var(--muted);font-size:12px;margin-top:12px}
.content-layout{display:grid;grid-template-columns:1.4fr .8fr;gap:34px}
.news-list{border-top:1px solid var(--line)}
.news-item{display:flex;justify-content:space-between;gap:22px;padding:21px 0;border-bottom:1px solid var(--line);transition:var(--ease)}
.news-item:hover{padding-left:8px}.news-item h3{font-size:17px;margin-bottom:5px}.news-item p{font-size:13px;color:var(--muted)}
.news-date{white-space:nowrap;color:var(--orange-dark);font-size:13px;font-weight:700}
.recommend{background:var(--blue);border-radius:var(--radius);padding:25px}
.recommend h3{font-size:22px;margin-bottom:16px}.rec-item{padding:14px 0;border-bottom:1px solid rgba(37,45,66,.14)}.rec-item:last-child{border-bottom:0}
.rec-item b{display:block;font-size:15px}.rec-item span{font-size:13px;color:var(--muted)}
.hot-section{background:#fff7e7}
.hot-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:20px}
.hot-main,.hot-small{position:relative;overflow:hidden;border-radius:var(--radius);min-height:285px;color:#fff;background:linear-gradient(135deg,#3a4058,#e16c4d)}
.hot-main{padding:32px;display:flex;flex-direction:column;justify-content:end}.hot-main:before{content:"";position:absolute;width:230px;height:230px;right:45px;top:-65px;background:var(--yellow);border-radius:50%;opacity:.8}
.hot-main>*{position:relative}.hot-main h3{font-size:30px;line-height:1.2;margin:7px 0}.hot-main p{max-width:420px;color:#f7e7df;font-size:14px}
.hot-small-wrap{display:grid;grid-template-columns:1fr 1fr;gap:20px}.hot-small{min-height:285px;padding:22px;background:linear-gradient(150deg,#68839b,#27354b);display:flex;flex-direction:column;justify-content:end}.hot-small:nth-child(2){background:linear-gradient(150deg,#e4a84e,#804c49)}
.hot-small h3{font-size:19px;line-height:1.3}.hot-small p{font-size:13px;color:#f8eee7;margin-top:5px}.tag{display:inline-block;align-self:flex-start;background:var(--yellow);color:var(--navy);font-size:11px;font-weight:800;padding:4px 9px;border-radius:8px;margin-bottom:10px}
.faq-section{background:var(--paper)}.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.faq{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 22px}.faq h3{font-size:16px;margin-bottom:7px}.faq p{font-size:14px;color:var(--muted)}
.privacy{padding:32px 0;background:#f1eee7}.privacy-inner{display:flex;gap:22px;align-items:flex-start}.privacy-badge{background:var(--navy);color:#fff;border-radius:12px;padding:9px 12px;font-size:18px}.privacy h2{font-size:19px;margin-bottom:5px}.privacy p{font-size:14px;color:var(--muted);max-width:850px}
.cta{padding:72px 0;background:var(--orange);color:#fff;text-align:center}.cta h2{font-size:clamp(28px,4vw,43px);line-height:1.2;margin-bottom:13px}.cta p{max-width:610px;margin:0 auto 24px;color:#fff0e9}.cta .btn-light{border:0;color:var(--orange-dark)}
.site-footer{background:var(--navy);color:#fff;padding:42px 0 24px}.footer-top{display:flex;justify-content:space-between;gap:30px;align-items:flex-start}.footer-brand p{color:#aeb7ca;font-size:13px;max-width:330px;margin-top:13px}.footer-links{display:flex;gap:20px;color:#cbd2e0;font-size:14px}.footer-links a:hover{color:var(--yellow)}.copyright{border-top:1px solid rgba(255,255,255,.13);margin-top:34px;padding-top:18px;color:#929db3;font-size:12px}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr 1fr}.stage{grid-column:2;grid-row:1/3}.hero-side{grid-column:1;grid-row:2}.content-layout,.form-layout{grid-template-columns:1fr;gap:30px}.data-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.container{width:min(100% - 28px,560px)}.header-inner{height:68px}.header-note{display:none}.logo{font-size:16px}.top-nav a{padding:7px 12px}.hero{padding:48px 0 28px}.hero-grid{display:flex;flex-direction:column;align-items:stretch}.hero h1{font-size:39px}.hero-side{padding:0}.stage{order:2;min-height:350px}.screen{transform:rotate(2deg) scale(.9)}.hero-facts{gap:14px}.section{padding:60px 0}.feature-grid,.faq-grid{grid-template-columns:1fr}.data-grid{gap:14px}.data-item{padding-left:15px}.data-item strong{font-size:27px}.form-row{grid-template-columns:1fr}.hot-grid{grid-template-columns:1fr}.hot-small-wrap{gap:12px}.hot-small{min-height:220px;padding:17px}.hot-main{min-height:300px}.footer-top{display:block}.footer-links{margin-top:25px;flex-wrap:wrap}}
@media(max-width:420px){.hero-actions .btn{width:100%}.hero-facts{flex-wrap:wrap}.data-grid{grid-template-columns:1fr 1fr}.data-item span{font-size:12px}.news-item{display:block}.news-date{display:block;margin-top:7px}}