/* roulang page: index */
:root{
  --ink:#17243a;--muted:#64748b;--subtle:#8a97a9;--blue:#2563eb;--blue-deep:#1746a2;
  --cyan:#18a7ad;--coral:#e97459;--gold:#e3aa43;--paper:#fff;--canvas:#f4f7fb;
  --line:#e2e8f0;--soft-blue:#edf4ff;--soft-teal:#eaf7f6;--radius:14px;--radius-lg:22px;
  --shadow:0 12px 32px rgba(27,52,87,.08);--shadow-hover:0 18px 40px rgba(27,52,87,.14);
  --content:1160px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--canvas);color:var(--ink);font-family:Inter,-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;transition:color .2s ease,background-color .2s ease,transform .2s ease,box-shadow .2s ease}
img{display:block;max-width:100%;height:auto}
button,input{font:inherit}
button{cursor:pointer}
:focus-visible{outline:3px solid rgba(37,99,235,.35);outline-offset:3px}
.container{width:min(var(--content),calc(100% - 48px));margin-inline:auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(16px);border-bottom:1px solid rgba(219,228,238,.85)}
.nav-wrap{height:76px;display:flex;align-items:center;gap:36px}
.brand{display:inline-flex;align-items:center;gap:11px;flex:none;font-weight:800;font-size:17px;line-height:1.25;letter-spacing:0}
.brand-mark{width:35px;height:35px;display:grid;place-items:center;border-radius:11px;color:#fff;background:var(--blue);box-shadow:0 5px 12px rgba(37,99,235,.23)}
.brand-mark svg{width:20px;height:20px}
.nav-links{display:flex;align-items:center;gap:7px;flex:1}
.nav-link{padding:9px 15px;color:#66758a;border-radius:9px;font-size:14px;font-weight:650}
.nav-link:hover,.nav-link.active{color:var(--blue);background:var(--soft-blue)}
.nav-tools{display:flex;align-items:center;gap:14px}
.nav-search{height:40px;width:218px;display:flex;align-items:center;gap:8px;padding:0 12px;background:#f5f7fa;border:1px solid #edf0f4;border-radius:10px;transition:border-color .2s,background .2s}
.nav-search:focus-within{border-color:#9dbaf2;background:#fff}
.nav-search svg{width:17px;height:17px;color:#7b899d;flex:none}
.nav-search input{width:100%;min-width:0;border:0;outline:0;background:transparent;color:var(--ink);font-size:13px}
.nav-search input::placeholder{color:#9aa5b4}
.menu-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink)}
.menu-toggle svg{width:20px;height:20px;vertical-align:middle}
main{overflow:hidden}
section{position:relative}
.section-pad{padding:76px 0}
.section-white{background:#fff}
.section-soft{background:#edf3fa}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:30px}
.section-kicker{margin:0 0 8px;color:var(--blue);font-size:11px;font-weight:800;letter-spacing:1.5px}
.section-title{margin:0;font-size:28px;line-height:1.3;letter-spacing:0;font-weight:760}
.section-desc{max-width:630px;margin:11px 0 0;color:var(--muted);font-size:14px}
.text-link{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:750;white-space:nowrap}
.text-link:hover{gap:12px;color:var(--blue-deep)}
.text-link svg{width:16px;height:16px}
.hero{padding:32px 0 26px;background:#f4f7fb}
.hero-stage{min-height:450px;position:relative;overflow:hidden;border-radius:var(--radius-lg);background:#15335a;color:#fff;display:grid;grid-template-columns:1fr 1fr;box-shadow:var(--shadow)}
.hero-copy{position:relative;z-index:2;align-self:center;padding:62px 56px}
.hero-eyebrow{display:inline-flex;align-items:center;gap:9px;margin:0 0 20px;color:#b9d6ff;font-size:12px;font-weight:750;letter-spacing:1.1px}
.hero-eyebrow:before{content:"";width:22px;height:2px;background:#55c2c3}
.hero h1{max-width:500px;margin:0;font-size:42px;line-height:1.24;font-weight:800;letter-spacing:0}
.hero-intro{max-width:520px;margin:18px 0 25px;color:#d2deed;font-size:14px;line-height:1.95}
.hero-actions{display:flex;align-items:center;gap:12px}
.button{min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:0 18px;border:1px solid transparent;border-radius:9px;font-size:13px;font-weight:750;transition:transform .2s,box-shadow .2s,background .2s}
.button:hover{transform:translateY(-2px)}
.button-primary{color:#12305a;background:#fff;box-shadow:0 7px 16px rgba(0,0,0,.13)}
.button-primary:hover{background:#eaf4ff;box-shadow:0 10px 22px rgba(0,0,0,.18)}
.button-ghost{color:#fff;background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.32)}
.button-ghost:hover{background:rgba(255,255,255,.16)}
.button svg{width:16px;height:16px}
.comparison{align-self:stretch;position:relative;display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:34px 34px 34px 0}
.compare-panel{position:relative;min-height:370px;overflow:hidden;border-radius:13px;background:#c9d7e8}
.compare-panel:after{content:"";position:absolute;inset:40% 0 0;background:linear-gradient(180deg,transparent,rgba(10,24,43,.82))}
.compare-panel.before{background:linear-gradient(140deg,#738399 0%,#44576f 55%,#293e59 100%)}
.compare-panel.after{background:linear-gradient(140deg,#a6d5d4 0%,#539a9c 46%,#204d66 100%)}
.compare-art{position:absolute;inset:0;display:flex;align-items:center;justify-content:center}
.compare-art:before,.compare-art:after{content:"";position:absolute;bottom:16%;width:34%;height:48%;border-radius:48% 48% 12% 12%;background:linear-gradient(150deg,rgba(238,239,233,.92),rgba(106,125,146,.9));transform:rotate(-8deg)}
.compare-art:after{width:27%;height:37%;bottom:19%;right:17%;transform:rotate(9deg);background:linear-gradient(155deg,rgba(246,225,185,.94),rgba(71,96,119,.95))}
.after .compare-art:before{background:linear-gradient(150deg,#f3d7ad,#cb7357)}
.after .compare-art:after{background:linear-gradient(150deg,#cae5e0,#315b72)}
.compare-art span{position:absolute;top:18%;left:16%;color:rgba(255,255,255,.6);font-size:54px;font-weight:800;line-height:1}
.compare-label{position:absolute;z-index:1;top:14px;left:14px;padding:5px 9px;border:1px solid rgba(255,255,255,.28);border-radius:6px;background:rgba(14,32,55,.3);color:#fff;font-size:10px;font-weight:750;letter-spacing:.8px}
.compare-caption{position:absolute;z-index:1;right:15px;bottom:15px;left:15px;color:#fff}
.compare-caption strong{display:block;font-size:13px}
.compare-caption span{color:rgba(255,255,255,.78);font-size:11px}
.hero-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 5px 0;color:#718096;font-size:12px}
.hero-foot strong{color:#34465e;font-size:12px}
.hero-foot-line{height:1px;flex:1;background:#dbe3ed}
.metric-strip{display:grid;grid-template-columns:repeat(4,1fr);margin-top:25px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 7px 20px rgba(30,54,87,.04)}
.metric{padding:20px 23px;border-right:1px solid var(--line)}
.metric:last-child{border-right:0}
.metric-label{display:block;color:var(--muted);font-size:12px}
.metric strong{display:block;margin-top:4px;color:var(--ink);font-size:24px;line-height:1.3}
.metric small{margin-left:6px;color:#8290a1;font-size:11px;font-weight:500}
.directory-layout{display:grid;grid-template-columns:1fr 1.28fr;gap:52px;align-items:center}
.directory-copy .section-title{max-width:390px}
.directory-note{margin:17px 0 0;color:var(--muted);font-size:14px;line-height:1.9}
.directory-index{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.index-item{min-height:88px;display:flex;align-items:center;gap:15px;padding:16px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 5px 15px rgba(31,57,91,.04);transition:transform .2s,box-shadow .2s,border-color .2s}
.index-item:hover{transform:translateY(-3px);border-color:#b9ccef;box-shadow:var(--shadow)}
.index-number{width:39px;height:39px;display:grid;place-items:center;flex:none;border-radius:10px;background:var(--soft-blue);color:var(--blue);font-size:12px;font-weight:800}
.index-item:nth-child(2) .index-number,.index-item:nth-child(5) .index-number{background:var(--soft-teal);color:#138889}
.index-item:nth-child(3) .index-number{background:#fff3e6;color:#c17a24}
.index-item strong{display:block;font-size:14px}
.index-item small{display:block;margin-top:3px;color:var(--muted);font-size:11px}
.feature-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:22px}
.feature-main{min-height:300px;position:relative;overflow:hidden;padding:34px;border-radius:var(--radius);background:#eaf1f8}
.feature-main:after{content:"";position:absolute;right:-35px;bottom:-79px;width:280px;height:280px;border:1px solid rgba(37,99,235,.14);border-radius:50%;box-shadow:0 0 0 27px rgba(37,99,235,.035),0 0 0 55px rgba(37,99,235,.025)}
.feature-main h3,.feature-side h3{margin:0 0 12px;font-size:21px;line-height:1.4}
.feature-main p,.feature-side p{max-width:470px;margin:0;color:var(--muted);font-size:13px;line-height:1.9}
.feature-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:21px}
.tag{display:inline-flex;align-items:center;padding:5px 10px;border-radius:6px;background:#fff;color:#53657b;font-size:11px;font-weight:650}
.feature-side{display:grid;grid-template-rows:1fr 1fr;gap:14px}
.feature-side article{padding:23px 25px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
.feature-side h3{font-size:17px}
.feature-side p{font-size:12px}
.feature-side .side-mark{width:30px;height:3px;margin-bottom:14px;border-radius:2px;background:var(--cyan)}
.feature-side article:last-child .side-mark{background:var(--coral)}
.chart-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:25px;align-items:stretch}
.chart-panel{padding:27px 29px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 6px 20px rgba(31,57,91,.035)}
.chart-top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:22px}
.chart-top h3{margin:0;font-size:16px}
.chart-top p{margin:5px 0 0;color:var(--muted);font-size:11px}
.chart-legend{display:flex;gap:13px;color:var(--muted);font-size:10px}
.legend-dot{display:inline-block;width:7px;height:7px;margin-right:5px;border-radius:50%;background:var(--blue)}
.legend-dot.teal{background:var(--cyan)}
.bar-row{display:grid;grid-template-columns:56px 1fr 38px;align-items:center;gap:11px;margin:15px 0}
.bar-row span{color:#607086;font-size:11px}
.bar-track{height:9px;overflow:hidden;border-radius:8px;background:#edf1f6}
.bar-fill{height:100%;border-radius:8px;background:var(--blue)}
.bar-fill.teal{background:var(--cyan)}
.bar-row b{text-align:right;color:#34465e;font-size:11px}
.chart-aside{display:flex;flex-direction:column;justify-content:space-between;padding:29px;border-radius:var(--radius);background:#eaf7f6}
.chart-aside h3{margin:0;font-size:18px}
.chart-aside p{margin:12px 0 20px;color:#536c75;font-size:13px;line-height:1.9}
.chart-aside strong{color:#168b8c;font-size:38px;line-height:1}
.chart-aside small{display:block;margin-top:7px;color:#66848a;font-size:11px}
.resource-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.resource-card{min-height:190px;display:flex;flex-direction:column;justify-content:space-between;padding:23px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 6px 18px rgba(31,57,91,.045);transition:transform .2s,box-shadow .2s}
.resource-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.resource-type{width:max-content;padding:5px 8px;border-radius:5px;background:#edf4ff;color:var(--blue);font-size:10px;font-weight:800}
.resource-card:nth-child(2) .resource-type{background:#eaf7f6;color:#168b8c}
.resource-card:nth-child(3) .resource-type{background:#fff3e8;color:#bb762b}
.resource-card h3{margin:18px 0 8px;font-size:16px}
.resource-card p{margin:0;color:var(--muted);font-size:12px;line-height:1.8}
.resource-meta{display:flex;justify-content:space-between;align-items:center;margin-top:18px;color:#8390a1;font-size:10px}
.resource-meta svg{width:15px;height:15px;color:var(--blue)}
.timeline{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:25px;padding-top:12px}
.timeline:before{content:"";position:absolute;top:24px;left:8%;right:8%;height:1px;background:#d4dfe9}
.timeline-item{position:relative;padding-top:34px}
.timeline-dot{position:absolute;top:6px;left:0;width:13px;height:13px;border:3px solid #fff;border-radius:50%;background:var(--blue);box-shadow:0 0 0 1px #8eb1ec}
.timeline-item:nth-child(2) .timeline-dot{background:var(--cyan);box-shadow:0 0 0 1px #84ceca}
.timeline-item:nth-child(3) .timeline-dot{background:var(--coral);box-shadow:0 0 0 1px #e6a18f}
.timeline-date{color:#7b899a;font-size:11px;font-weight:700}
.timeline-item h3{margin:7px 0 6px;font-size:15px}
.timeline-item p{max-width:310px;margin:0;color:var(--muted);font-size:12px;line-height:1.8}
.news-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:35px}
.news-feature{display:grid;grid-template-columns:42% 1fr;min-height:238px;overflow:hidden;border:1px solid var(--line);border-radius:12px;background:#fff;box-shadow:0 6px 20px rgba(31,57,91,.04)}
.news-art{position:relative;overflow:hidden;background:linear-gradient(145deg,#b9d4df,#54788a)}
.news-art:before{content:"";position:absolute;width:190px;height:190px;left:15%;top:19%;border:1px solid rgba(255,255,255,.35);border-radius:50%;box-shadow:0 0 0 20px rgba(255,255,255,.06),0 0 0 43px rgba(255,255,255,.045)}
.news-art:after{content:"映";position:absolute;right:14px;bottom:-34px;color:rgba(255,255,255,.28);font-size:150px;font-weight:800;line-height:1}
.news-feature-copy{padding:25px}
.news-category{color:var(--blue);font-size:10px;font-weight:800;letter-spacing:.5px}
.news-feature h3{margin:10px 0 9px;font-size:17px;line-height:1.5}
.news-feature p{margin:0;color:var(--muted);font-size:12px;line-height:1.9}
.news-list{display:grid;gap:0}
.news-row{display:grid;grid-template-columns:54px 1fr;gap:13px;align-items:start;padding:13px 0;border-bottom:1px solid var(--line)}
.news-row:first-child{padding-top:2px}
.news-date{padding-top:2px;color:#92a0b0;font-size:10px;line-height:1.5}
.news-row strong{display:block;font-size:13px;line-height:1.5}
.news-row span{display:block;margin-top:4px;color:var(--muted);font-size:11px}
.trust-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.trust-copy h2{margin:0;font-size:27px;line-height:1.35}
.trust-copy p{max-width:570px;margin:14px 0 0;color:var(--muted);font-size:13px;line-height:1.95}
.trust-points{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.trust-point{display:flex;gap:11px;align-items:flex-start;padding:15px 14px;background:#fff;border:1px solid var(--line);border-radius:10px}
.trust-icon{width:28px;height:28px;display:grid;place-items:center;flex:none;border-radius:8px;background:#eaf7f6;color:#168b8c}
.trust-icon svg{width:15px;height:15px}
.trust-point strong{display:block;font-size:12px}
.trust-point span{display:block;margin-top:3px;color:var(--muted);font-size:10px;line-height:1.6}
.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0}
.quick-item{padding:24px 24px 24px 0;border-right:1px solid var(--line)}
.quick-item+.quick-item{padding-left:24px}
.quick-item:last-child{border-right:0}
.quick-number{color:#88a8d8;font-size:11px;font-weight:800}
.quick-item h3{margin:9px 0 7px;font-size:15px}
.quick-item p{margin:0;color:var(--muted);font-size:12px;line-height:1.85}
.faq-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.faq-item{padding:18px 20px;border:1px solid var(--line);border-radius:10px;background:#fff}
.faq-item h3{margin:0 0 8px;font-size:13px}
.faq-item p{margin:0;color:var(--muted);font-size:11px;line-height:1.8}
.signup-band{padding:56px 0;background:#18395f;color:#fff}
.signup-inner{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:center}
.signup-copy h2{margin:0;font-size:26px;line-height:1.4}
.signup-copy p{max-width:480px;margin:11px 0 0;color:#c8d6e7;font-size:13px;line-height:1.85}
.signup-form{display:flex;gap:9px}
.signup-form input{min-width:0;flex:1;height:46px;padding:0 14px;border:1px solid rgba(255,255,255,.25);border-radius:8px;background:rgba(255,255,255,.1);color:#fff;outline:0}
.signup-form input::placeholder{color:#b8c8da}
.signup-form input:focus{border-color:#8bc9ca;background:rgba(255,255,255,.15)}
.signup-form button{height:46px;padding:0 18px;border:0;border-radius:8px;background:#f4bd67;color:#273b53;font-size:12px;font-weight:800;transition:background .2s,transform .2s}
.signup-form button:hover{background:#ffd184;transform:translateY(-1px)}
.form-note{grid-column:2;margin:-35px 0 0;color:#aebfd2;font-size:10px}
.site-footer{padding:36px 0 24px;background:#fff;border-top:1px solid var(--line)}
.footer-main{display:flex;align-items:flex-start;justify-content:space-between;gap:30px;padding-bottom:27px}
.footer-brand{max-width:370px}
.footer-brand .brand{font-size:16px}
.footer-brand p{margin:12px 0 0;color:var(--muted);font-size:11px;line-height:1.8}
.footer-links{display:flex;gap:42px}
.footer-col strong{display:block;margin-bottom:10px;color:#36465c;font-size:11px}
.footer-col a{display:block;margin:6px 0;color:#748195;font-size:11px}
.footer-col a:hover{color:var(--blue)}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;padding-top:18px;border-top:1px solid #edf0f4;color:#98a3b1;font-size:10px}
.footer-bottom a:hover{color:var(--blue)}
@media(max-width:1024px){
  .nav-wrap{gap:22px}.nav-search{width:180px}.hero-copy{padding:48px 38px}.hero h1{font-size:36px}
  .comparison{padding-right:25px}.compare-panel{min-height:335px}.section-pad{padding:64px 0}
  .directory-layout{gap:32px}.news-layout{gap:25px}
}
@media(max-width:768px){
  .container{width:min(100% - 36px,var(--content))}
  .nav-wrap{height:68px;gap:14px}.brand{font-size:15px}.brand-mark{width:32px;height:32px}
  .menu-toggle{display:block;margin-left:auto}.nav-tools{display:none}
  .nav-links{position:absolute;top:68px;left:0;right:0;display:none;align-items:stretch;gap:3px;padding:12px 18px 16px;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 12px 20px rgba(30,54,87,.08)}
  .nav-links.open{display:flex;flex-direction:column}.nav-link{padding:11px 13px}
  .hero{padding-top:20px}.hero-stage{grid-template-columns:1fr;min-height:auto}
  .hero-copy{padding:39px 30px 24px}.hero h1{max-width:560px;font-size:34px}
  .hero-intro{margin:14px 0 20px}.comparison{min-height:245px;padding:0 22px 22px;grid-template-columns:1fr 1fr}
  .compare-panel{min-height:225px}.compare-art span{font-size:42px}
  .metric{padding:15px 16px}.metric strong{font-size:21px}
  .section-pad{padding:56px 0}.section-title{font-size:25px}
  .directory-layout,.chart-layout,.news-layout,.trust-grid{grid-template-columns:1fr;gap:26px}
  .directory-copy .section-title{max-width:none}.directory-index{grid-template-columns:repeat(3,1fr)}
  .index-item{min-height:80px;padding:12px;gap:10px}.index-number{width:34px;height:34px}
  .feature-grid{grid-template-columns:1fr}.feature-main{min-height:245px}
  .feature-side{grid-template-columns:1fr 1fr;grid-template-rows:auto}
  .resource-grid{grid-template-columns:repeat(2,1fr)}
  .news-feature{min-height:220px}
  .signup-inner{grid-template-columns:1fr;gap:22px}.form-note{grid-column:1;margin:-14px 0 0}
}
@media(max-width:520px){
  body{font-size:14px}.container{width:calc(100% - 28px)}
  .brand{max-width:calc(100% - 65px);font-size:14px}.brand-mark{width:30px;height:30px}
  .hero-copy{padding:31px 21px 20px}.hero h1{font-size:29px}.hero-intro{font-size:12px;line-height:1.85}
  .hero-actions{flex-wrap:wrap}.button{min-height:42px;padding:0 14px;font-size:12px}
  .comparison{gap:8px;padding:0 14px 15px}.compare-panel{min-height:185px}
  .compare-label{top:9px;left:9px;font-size:9px}.compare-caption{right:9px;bottom:9px;left:9px}
  .compare-caption strong{font-size:11px}.compare-caption span{font-size:9px}
  .hero-foot{font-size:10px}.metric-strip{grid-template-columns:1fr 1fr}
  .metric{padding:13px 14px;border-bottom:1px solid var(--line)}
  .metric:nth-child(2){border-right:0}.metric:nth-child(3),.metric:nth-child(4){border-bottom:0}
  .metric strong{font-size:19px}
  .section-pad{padding:45px 0}.section-head{align-items:flex-start;margin-bottom:22px}
  .section-head .text-link{font-size:11px}.section-title{font-size:22px}.section-desc{font-size:12px}
  .directory-layout{gap:20px}.directory-index{grid-template-columns:1fr 1fr;gap:9px}
  .index-item{min-height:74px}.index-item strong{font-size:12px}.index-item small{font-size:10px}
  .feature-main{min-height:260px;padding:25px 22px}.feature-main h3{font-size:19px}
  .feature-side{grid-template-columns:1fr}.feature-side article{padding:20px}
  .chart-panel{padding:21px 17px}.chart-top{flex-direction:column}.chart-legend{gap:10px}
  .chart-aside{padding:24px}.resource-grid{grid-template-columns:1fr}
  .resource-card{min-height:165px;padding:20px}
  .timeline{grid-template-columns:1fr;gap:20px;padding:0 0 0 19px}
  .timeline:before{top:8px;bottom:10px;left:5px;right:auto;width:1px;height:auto}
  .timeline-item{padding:0 0 0 16px}.timeline-dot{top:4px;left:-20px}
  .news-feature{grid-template-columns:1fr}.news-art{min-height:150px}.news-feature-copy{padding:19px}
  .trust-points{grid-template-columns:1fr 1fr;gap:8px}.trust-point{padding:12px 10px;gap:8px}
  .trust-copy h2{font-size:22px}.trust-copy p{font-size:12px}
  .quick-grid{grid-template-columns:1fr;gap:0}.quick-item,.quick-item+.quick-item{padding:17px 0;border-right:0;border-bottom:1px solid var(--line)}
  .quick-item:last-child{border-bottom:0}
  .faq-list{grid-template-columns:1fr}.faq-item{padding:16px}
  .signup-band{padding:42px 0}.signup-copy h2{font-size:22px}.signup-form{flex-direction:column}
  .signup-form button{width:100%}.form-note{margin:-12px 0 0}
  .footer-main{flex-direction:column}.footer-links{width:100%;justify-content:space-between;gap:18px}
  .footer-bottom{flex-direction:column;gap:5px}
}

/* roulang page: category1 */
:root{
      --ink:#17243a;--muted:#64748b;--subtle:#8a97a9;--blue:#2563eb;--blue-deep:#1746a2;
      --cyan:#18a7ad;--coral:#e97459;--gold:#e3aa43;--paper:#fff;--canvas:#f4f7fb;
      --line:#e2e8f0;--soft-blue:#edf4ff;--soft-teal:#eaf7f6;--radius:14px;--radius-lg:22px;
      --shadow:0 12px 32px rgba(27,52,87,.08);--shadow-hover:0 18px 40px rgba(27,52,87,.14);
      --content:1160px;
    }
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth;scroll-padding-top:96px}
    body{margin:0;background:var(--canvas);color:var(--ink);font-family:Inter,-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;transition:color .2s ease,background-color .2s ease,transform .2s ease,box-shadow .2s ease}
    img{display:block;max-width:100%;height:auto}
    button,input{font:inherit}
    button{cursor:pointer}
    :focus-visible{outline:3px solid rgba(37,99,235,.35);outline-offset:3px}
    .container{width:min(var(--content),calc(100% - 48px));margin-inline:auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(16px);border-bottom:1px solid rgba(219,228,238,.85)}
    .nav-wrap{height:76px;display:flex;align-items:center;gap:36px}
    .brand{display:inline-flex;align-items:center;gap:11px;flex:none;font-weight:800;font-size:17px;line-height:1.25;letter-spacing:0}
    .brand-mark{width:35px;height:35px;display:grid;place-items:center;border-radius:11px;color:#fff;background:var(--blue);box-shadow:0 5px 12px rgba(37,99,235,.23)}
    .brand-mark svg{width:20px;height:20px}
    .nav-links{display:flex;align-items:center;gap:7px;flex:1}
    .nav-link{padding:9px 15px;color:#66758a;border-radius:9px;font-size:14px;font-weight:650}
    .nav-link:hover,.nav-link.active{color:var(--blue);background:var(--soft-blue)}
    .nav-tools{display:flex;align-items:center;gap:14px}
    .nav-search{height:40px;width:218px;display:flex;align-items:center;gap:8px;padding:0 12px;background:#f5f7fa;border:1px solid #edf0f4;border-radius:10px;transition:border-color .2s,background .2s}
    .nav-search:focus-within{border-color:#9dbaf2;background:#fff}
    .nav-search svg{width:17px;height:17px;color:#7b899d;flex:none}
    .nav-search input{width:100%;min-width:0;border:0;outline:0;background:transparent;color:var(--ink);font-size:13px}
    .nav-search input::placeholder{color:#9aa5b4}
    .menu-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink)}
    .menu-toggle svg{width:20px;height:20px;vertical-align:middle}
    main{overflow:hidden}
    section{position:relative}
    .section-pad{padding:66px 0}
    .section-white{background:#fff}
    .section-soft{background:#edf3fa}
    .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px}
    .section-kicker{margin:0 0 8px;color:var(--blue);font-size:11px;font-weight:800;letter-spacing:1.5px}
    .section-title{margin:0;font-size:28px;line-height:1.3;font-weight:760}
    .section-desc{max-width:680px;margin:11px 0 0;color:var(--muted);font-size:14px}
    .text-link{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:750;white-space:nowrap}
    .text-link:hover{gap:12px;color:var(--blue-deep)}
    .text-link svg{width:16px;height:16px}
    .hero{padding:30px 0 25px;background:#f4f7fb}
    .hero-stage{min-height:410px;position:relative;overflow:hidden;border-radius:var(--radius-lg);background:#15335a;color:#fff;display:grid;grid-template-columns:1.03fr .97fr;box-shadow:var(--shadow)}
    .hero-copy{position:relative;z-index:2;align-self:center;padding:52px 54px}
    .hero-eyebrow{display:inline-flex;align-items:center;gap:9px;margin:0 0 17px;color:#b9d6ff;font-size:12px;font-weight:750;letter-spacing:1px}
    .hero-eyebrow:before{content:"";width:22px;height:2px;background:#55c2c3}
    .hero h1{max-width:570px;margin:0;font-size:38px;line-height:1.3;font-weight:800}
    .hero-intro{max-width:530px;margin:16px 0 23px;color:#d2deed;font-size:14px;line-height:1.95}
    .hero-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
    .button{min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:0 18px;border:1px solid transparent;border-radius:9px;font-size:13px;font-weight:750;transition:transform .2s,box-shadow .2s,background .2s}
    .button:hover{transform:translateY(-2px)}
    .button-primary{color:#12305a;background:#fff;box-shadow:0 7px 16px rgba(0,0,0,.13)}
    .button-primary:hover{background:#eaf4ff;box-shadow:0 10px 22px rgba(0,0,0,.18)}
    .button-ghost{color:#fff;background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.32)}
    .button-ghost:hover{background:rgba(255,255,255,.16)}
    .button svg{width:16px;height:16px}
    .hero-visual{position:relative;min-height:410px;overflow:hidden;background:#203f62}
    .hero-visual img{width:100%;height:100%;position:absolute;inset:0;object-fit:cover;object-position:center;opacity:.9}
    .hero-visual:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#15335a 0%,rgba(21,51,90,.35) 27%,rgba(21,51,90,.04) 100%)}
    .hero-stamp{position:absolute;z-index:2;right:28px;bottom:26px;max-width:230px;padding:15px 17px;border:1px solid rgba(255,255,255,.25);border-radius:12px;background:rgba(16,38,66,.72);backdrop-filter:blur(10px)}
    .hero-stamp strong{display:block;font-size:14px}
    .hero-stamp span{display:block;margin-top:3px;color:#c9d8ea;font-size:11px}
    .metrics{display:grid;grid-template-columns:repeat(4,1fr);margin-top:15px;border:1px solid var(--line);border-radius:12px;background:#fff;box-shadow:0 5px 18px rgba(31,57,91,.04)}
    .metric{padding:15px 21px;border-right:1px solid var(--line)}
    .metric:last-child{border-right:0}
    .metric strong{display:block;font-size:19px;line-height:1.3;color:var(--ink)}
    .metric span{display:block;margin-top:3px;color:var(--muted);font-size:11px}
    .metric:nth-child(2) strong{color:var(--cyan)}
    .metric:nth-child(3) strong{color:var(--coral)}
    .metric:nth-child(4) strong{color:#bd8426}
    .channel-layout{display:grid;grid-template-columns:1fr 300px;gap:26px;align-items:start}
    .region-list{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
    .region-card{min-height:226px;position:relative;overflow:hidden;padding:23px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 5px 15px rgba(31,57,91,.04);transition:transform .2s,box-shadow .2s,border-color .2s}
    .region-card:hover,.topic-card:hover,.story-card:hover{transform:translateY(-3px);border-color:#b9ccef;box-shadow:var(--shadow)}
    .region-index{display:flex;align-items:center;justify-content:space-between;margin-bottom:29px}
    .region-index span:first-child{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:var(--soft-blue);color:var(--blue);font-size:13px;font-weight:800}
    .region-card:nth-child(2) .region-index span:first-child{background:var(--soft-teal);color:#138889}
    .region-card:nth-child(3) .region-index span:first-child{background:#fff3e6;color:#c17a24}
    .region-index span:last-child{color:#91a0b2;font-size:11px;font-weight:700;letter-spacing:.6px}
    .region-card h3{margin:0 0 7px;font-size:18px}
    .region-card p{margin:0;color:var(--muted);font-size:12px;line-height:1.8}
    .side-note{padding:23px;border-radius:var(--radius);background:#15335a;color:#fff;box-shadow:var(--shadow)}
    .side-note .section-kicker{color:#83d8d5}
    .side-note h3{margin:0;font-size:19px;line-height:1.45}
    .side-note p{margin:12px 0 17px;color:#d2deed;font-size:12px;line-height:1.9}
    .side-note ul{margin:0;padding:0;list-style:none}
    .side-note li{display:flex;align-items:center;gap:9px;padding:9px 0;border-top:1px solid rgba(255,255,255,.14);color:#e2eaf3;font-size:12px}
    .side-note li:before{content:"";width:6px;height:6px;flex:none;border-radius:50%;background:#55c2c3}
    .topic-layout{display:grid;grid-template-columns:245px 1fr;gap:30px;align-items:start}
    .topic-intro{padding:7px 4px}
    .topic-intro .section-title{font-size:25px}
    .topic-intro p{margin:12px 0 0;color:var(--muted);font-size:13px;line-height:1.9}
    .topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .topic-card{min-height:112px;padding:16px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 4px 13px rgba(31,57,91,.035);transition:transform .2s,box-shadow .2s,border-color .2s}
    .topic-card strong{display:flex;align-items:center;gap:8px;font-size:14px}
    .topic-card strong:before{content:"";width:7px;height:7px;border-radius:2px;background:var(--blue)}
    .topic-card:nth-child(3n+2) strong:before{background:var(--cyan)}
    .topic-card:nth-child(3n) strong:before{background:var(--coral)}
    .topic-card span{display:block;margin-top:8px;color:var(--muted);font-size:11px;line-height:1.7}
    .comparison{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .compare-panel{padding:25px 27px;border-radius:var(--radius);background:#fff;border:1px solid var(--line)}
    .compare-panel h3{margin:0 0 18px;font-size:17px}
    .compare-row{display:grid;grid-template-columns:90px 1fr;gap:12px;padding:12px 0;border-top:1px solid #edf1f5}
    .compare-row strong{font-size:12px;color:#42556e}
    .compare-row span{font-size:12px;color:var(--muted);line-height:1.75}
    .compare-panel.accent{background:#eaf7f6;border-color:#d8efed}
    .compare-panel.accent h3{color:#117f82}
    .milestones{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative}
    .milestone{position:relative;padding:0 22px 3px 0}
    .milestone:not(:last-child):after{content:"";position:absolute;top:10px;left:15px;right:0;height:1px;background:#cbd9e8}
    .milestone-dot{position:relative;z-index:1;width:20px;height:20px;display:grid;place-items:center;margin-bottom:17px;border:1px solid #a8c3e8;border-radius:50%;background:#fff}
    .milestone-dot:after{content:"";width:7px;height:7px;border-radius:50%;background:var(--blue)}
    .milestone:nth-child(2) .milestone-dot:after{background:var(--cyan)}
    .milestone:nth-child(3) .milestone-dot:after{background:var(--coral)}
    .milestone:nth-child(4) .milestone-dot:after{background:var(--gold)}
    .milestone small{color:var(--subtle);font-size:10px;font-weight:750;letter-spacing:.7px}
    .milestone h3{margin:5px 0 6px;font-size:15px}
    .milestone p{max-width:230px;margin:0;color:var(--muted);font-size:11px;line-height:1.8}
    .story-layout{display:grid;grid-template-columns:1fr 310px;gap:28px;align-items:start}
    .story-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .story-card{min-height:166px;display:flex;flex-direction:column;justify-content:space-between;padding:19px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 4px 14px rgba(31,57,91,.035);transition:transform .2s,box-shadow .2s,border-color .2s}
    .story-meta{display:flex;align-items:center;gap:9px;color:#8492a4;font-size:10px}
    .story-meta b{padding:3px 7px;border-radius:5px;background:var(--soft-blue);color:var(--blue);font-size:10px}
    .story-card h3{margin:11px 0 7px;font-size:15px;line-height:1.5}
    .story-card p{margin:0;color:var(--muted);font-size:11px;line-height:1.8}
    .story-aside{padding:23px;background:#fff;border-left:3px solid var(--cyan);box-shadow:0 5px 17px rgba(31,57,91,.05)}
    .story-aside strong{display:block;font-size:15px}
    .story-aside p{margin:10px 0 0;color:var(--muted);font-size:12px;line-height:1.9}
    .assurance{display:grid;grid-template-columns:1.15fr .85fr;gap:42px;align-items:center}
    .assurance-copy h2{margin:0;font-size:26px;line-height:1.4}
    .assurance-copy p{max-width:590px;margin:13px 0 0;color:var(--muted);font-size:13px;line-height:1.9}
    .assurance-points{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .assurance-point{display:flex;align-items:flex-start;gap:11px;padding:14px;border:1px solid var(--line);border-radius:10px;background:#fff}
    .assurance-icon{width:29px;height:29px;flex:none;display:grid;place-items:center;border-radius:9px;background:var(--soft-teal);color:#138889;font-size:13px;font-weight:800}
    .assurance-point:nth-child(2) .assurance-icon{background:var(--soft-blue);color:var(--blue)}
    .assurance-point:nth-child(3) .assurance-icon{background:#fff3e6;color:#c17a24}
    .assurance-point:nth-child(4) .assurance-icon{background:#fff0ed;color:var(--coral)}
    .assurance-point strong{display:block;font-size:12px}
    .assurance-point span{display:block;margin-top:3px;color:var(--muted);font-size:10px;line-height:1.65}
    .faq-grid{display:grid;grid-template-columns:280px 1fr;gap:42px}
    .faq-intro h2{margin:0;font-size:25px;line-height:1.4}
    .faq-intro p{margin:11px 0 0;color:var(--muted);font-size:13px;line-height:1.9}
    .faq-list{border-top:1px solid var(--line)}
    .faq-item{padding:16px 0;border-bottom:1px solid var(--line)}
    .faq-item h3{margin:0;font-size:14px}
    .faq-item p{margin:7px 0 0;color:var(--muted);font-size:12px;line-height:1.85}
    .closing-band{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:26px 30px;border-radius:var(--radius);background:#15335a;color:#fff}
    .closing-band h2{margin:0;font-size:21px}
    .closing-band p{margin:5px 0 0;color:#d2deed;font-size:12px}
    .site-footer{padding:44px 0 20px;background:#fff;border-top:1px solid var(--line)}
    .footer-main{display:flex;align-items:flex-start;justify-content:space-between;gap:50px;padding-bottom:31px}
    .footer-brand{max-width:390px}
    .footer-brand .brand{font-size:16px}
    .footer-brand p{margin:14px 0 0;color:var(--muted);font-size:12px;line-height:1.8}
    .footer-links{display:flex;gap:68px}
    .footer-col{display:grid;align-content:start;gap:9px;min-width:105px}
    .footer-col strong{margin-bottom:3px;font-size:12px}
    .footer-col a{color:var(--muted);font-size:11px}
    .footer-col a:hover,.footer-bottom a:hover{color:var(--blue)}
    .footer-bottom{display:flex;justify-content:space-between;gap:16px;padding-top:17px;border-top:1px solid var(--line);color:#8a97a9;font-size:10px}
    .footer-bottom a{color:#66758a}
    @media(max-width:1024px){
      .nav-wrap{gap:18px}.nav-search{width:180px}
      .hero-copy{padding:42px 36px}.hero h1{font-size:34px}
      .channel-layout{grid-template-columns:1fr 260px}
      .topic-layout{grid-template-columns:205px 1fr}
      .story-layout{grid-template-columns:1fr 260px}
      .faq-grid{grid-template-columns:230px 1fr;gap:28px}
    }
    @media(max-width:768px){
      .container{width:min(var(--content),calc(100% - 36px))}
      .nav-wrap{height:68px;gap:12px}
      .brand{font-size:15px;gap:8px}.brand-mark{width:32px;height:32px}
      .nav-tools{margin-left:auto}.nav-search{width:190px;height:38px}
      .menu-toggle{display:none}
      .nav-links{flex:0 0 auto}
      .nav-link{padding:8px 10px;font-size:12px}
      .hero-stage{grid-template-columns:1fr;min-height:0}
      .hero-copy{padding:38px 32px 28px}
      .hero h1{font-size:32px}
      .hero-visual{min-height:230px}
      .hero-visual:after{background:linear-gradient(180deg,#15335a 0%,rgba(21,51,90,.1) 42%,rgba(21,51,90,.16) 100%)}
      .metrics{grid-template-columns:repeat(2,1fr)}
      .metric:nth-child(2){border-right:0}
      .metric:nth-child(-n+2){border-bottom:1px solid var(--line)}
      .section-pad{padding:54px 0}
      .section-head{align-items:flex-start;flex-direction:column;gap:10px}
      .section-title{font-size:25px}
      .channel-layout,.topic-layout,.story-layout,.assurance,.faq-grid{grid-template-columns:1fr}
      .region-list{grid-template-columns:repeat(3,1fr)}
      .topic-layout{gap:20px}
      .topic-intro p{max-width:620px}
      .story-aside{max-width:none}
      .faq-grid{gap:22px}
      .assurance{gap:24px}
      .footer-main{gap:30px}
      .footer-links{gap:35px}
    }
    @media(max-width:520px){
      .container{width:calc(100% - 30px)}
      .nav-wrap{height:auto;min-height:66px;flex-wrap:wrap;padding:11px 0}
      .brand{max-width:calc(100% - 4px);font-size:14px}
      .nav-links{order:3;width:100%;padding-top:5px;gap:5px}
      .nav-link{padding:7px 10px}
      .nav-tools{display:none}
      .hero{padding-top:18px}
      .hero-copy{padding:31px 23px 24px}
      .hero h1{font-size:28px}
      .hero-intro{font-size:13px}
      .hero-actions{align-items:stretch;flex-direction:column}
      .hero-actions .button{width:100%}
      .hero-visual{min-height:195px}
      .hero-stamp{right:14px;bottom:14px}
      .metric{padding:13px}
      .metric strong{font-size:17px}
      .region-list{grid-template-columns:1fr}
      .region-card{min-height:0}
      .region-index{margin-bottom:17px}
      .topic-grid{grid-template-columns:1fr 1fr}
      .topic-card{min-height:105px;padding:13px}
      .comparison{grid-template-columns:1fr}
      .compare-panel{padding:20px}
      .compare-row{grid-template-columns:78px 1fr}
      .milestones{grid-template-columns:1fr 1fr;row-gap:24px}
      .milestone:nth-child(2):after{display:none}
      .story-list{grid-template-columns:1fr}
      .assurance-points{grid-template-columns:1fr 1fr}
      .closing-band{align-items:flex-start;flex-direction:column;padding:23px}
      .closing-band .button{width:100%}
      .footer-main{flex-direction:column}
      .footer-links{width:100%;justify-content:space-between;gap:18px}
      .footer-bottom{align-items:flex-start;flex-direction:column}
    }
    @media(prefers-reduced-motion:reduce){
      *,*::before,*::after{scroll-behavior:auto!important;transition:none!important}
    }