/* roulang page: index */
:root{
  --ink:#183B35;--ink-2:#244d45;--orange:#E98352;--orange-soft:#f7dfd2;
  --paper:#F7F5F0;--white:#fffefa;--mist:#DDE7E1;--line:#D9DDD7;
  --text:#202522;--muted:#68716D;--danger:#ad5a4b;
  --radius:18px;--radius-sm:12px;--shadow:0 10px 30px rgba(24,59,53,.08);
  --shadow-hover:0 16px 38px rgba(24,59,53,.14);
  --container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.8}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
:focus-visible{outline:3px solid rgba(233,131,82,.48);outline-offset:3px}
.container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
.section{padding:88px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:22px;margin-bottom:34px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--ink);font-size:13px;font-weight:700;letter-spacing:.08em}
.eyebrow:before{content:"";width:26px;height:2px;background:var(--orange)}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(36px,4.3vw,52px);line-height:1.22;letter-spacing:-.045em;margin-bottom:22px}
h2{font-size:clamp(27px,3vw,34px);line-height:1.3;letter-spacing:-.03em;margin-bottom:0}
h3{font-size:19px;line-height:1.45;margin-bottom:8px}
p{color:var(--muted)}
.btn{min-height:46px;padding:11px 19px;border:1px solid transparent;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:700;line-height:1;transition:.2s ease}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--ink-2);box-shadow:var(--shadow)}
.btn-orange{background:var(--orange);color:#311d13}
.btn-orange:hover{background:#ed9468;box-shadow:var(--shadow)}
.btn-outline{border-color:#b9c5bd;background:transparent;color:var(--ink)}
.btn-outline:hover{border-color:var(--orange);background:#fffaf6}
.text-link{display:inline-flex;align-items:center;gap:7px;color:var(--ink);font-weight:700;border-bottom:1px solid rgba(24,59,53,.35);padding-bottom:2px;transition:.2s}
.text-link:hover{color:var(--orange);border-color:var(--orange)}
.badge{display:inline-flex;align-items:center;border-radius:99px;padding:4px 10px;background:var(--mist);color:var(--ink);font-size:12px;font-weight:700;line-height:1.4}
.site-header{height:76px;background:rgba(255,254,250,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;backdrop-filter:blur(10px)}
.nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:10px;min-width:max-content}
.brand-mark{width:37px;height:37px;border-radius:11px;background:var(--ink);color:#fff;display:grid;place-items:center;font-weight:800;font-size:20px;position:relative;overflow:hidden}
.brand-mark:after{content:"";position:absolute;width:24px;height:24px;border:1px solid rgba(255,255,255,.28);border-radius:9px;transform:rotate(35deg)}
.brand strong{font-size:17px;line-height:1.1;display:block}
.brand small{display:block;color:var(--muted);font-size:10px;margin-top:2px}
.nav{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav a{height:76px;display:flex;align-items:center;font-size:14px;font-weight:700;color:#4a5651;position:relative}
.nav a:after{content:"";position:absolute;left:50%;bottom:18px;width:0;height:2px;background:var(--orange);transition:.2s}
.nav a:hover,.nav a.active{color:var(--ink)}
.nav a:hover:after,.nav a.active:after{width:18px;left:calc(50% - 9px)}
.menu-toggle{display:none;border:0;background:none;color:var(--ink);padding:9px;font-size:24px}
.hero{padding:64px 0 34px;background:linear-gradient(180deg,#f7f5f0 0%,#edf1ec 100%)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.hero-copy{padding:22px 0}
.hero-copy p{font-size:17px;max-width:610px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px}
.trust{font-size:13px;color:var(--ink);background:rgba(255,255,255,.68);border:1px solid #d6dfd8;border-radius:99px;padding:7px 11px}
.trust b{color:var(--orange);margin-right:5px}
.product-stage{position:relative;min-height:406px;display:flex;align-items:center;justify-content:center}
.product-stage:before{content:"";position:absolute;inset:35px 25px;background:radial-gradient(circle at center,rgba(221,231,225,.95),rgba(221,231,225,0) 68%);border-radius:50%}
.phone{width:238px;border:8px solid #243b36;border-radius:34px;background:#fffefa;box-shadow:0 24px 46px rgba(24,59,53,.2);padding:12px;position:relative;z-index:2}
.phone:before{content:"";position:absolute;top:5px;left:50%;transform:translateX(-50%);height:4px;width:62px;border-radius:4px;background:#0f2722}
.app-top{padding:12px 3px 15px;display:flex;justify-content:space-between;align-items:center;font-size:11px;color:var(--muted)}
.app-logo{color:var(--ink);font-weight:800;font-size:14px}
.app-banner{background:var(--ink);border-radius:15px;padding:16px;color:#fff;margin-bottom:12px}
.app-banner small{opacity:.7;font-size:10px}.app-banner strong{display:block;font-size:18px;margin-top:5px}
.app-cards{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.app-card{border:1px solid #e2e7e2;border-radius:11px;padding:10px;background:#fff}
.app-card span{font-size:10px;color:var(--muted);display:block}.app-card b{font-size:12px;color:var(--ink)}
.app-alert{margin-top:10px;border-radius:10px;background:#fff2eb;padding:9px 10px;font-size:10px;color:#71412e}
.floating-note{position:absolute;z-index:3;border:1px solid #d4ddd5;background:rgba(255,254,250,.95);box-shadow:var(--shadow);border-radius:13px;padding:10px 12px;font-size:11px;color:var(--ink)}
.note-one{right:2%;top:16%}.note-two{left:0;bottom:15%}
.status-strip{padding:0 0 64px;background:#edf1ec}
.status-grid{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);display:grid;grid-template-columns:repeat(4,1fr);box-shadow:var(--shadow)}
.status-item{padding:20px 25px;border-right:1px solid var(--line)}
.status-item:last-child{border:0}.status-item b{display:block;color:var(--ink);font-size:16px}.status-item span{font-size:13px;color:var(--muted)}
.channel-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.channel-card{min-height:176px;border-radius:var(--radius);padding:26px;position:relative;overflow:hidden;border:1px solid var(--line);transition:.2s}
.channel-card:hover{transform:translateY(-3px);border-color:#dca385;box-shadow:var(--shadow-hover)}
.channel-card:nth-child(1){background:#e8efeb}.channel-card:nth-child(2){background:#f8e6dc}.channel-card:nth-child(3){background:#e5ece9}.channel-card:nth-child(4){background:#f1eee5}
.channel-icon{width:42px;height:42px;border-radius:12px;background:rgba(255,255,255,.72);display:grid;place-items:center;color:var(--ink);font-size:21px;margin-bottom:18px}
.channel-card p{font-size:14px;margin:0}.channel-arrow{position:absolute;right:25px;bottom:24px;font-size:21px;color:var(--orange)}
.topic-tags{margin-top:20px;display:flex;gap:8px;flex-wrap:wrap}
.strength{background:var(--ink);color:#fff}
.strength p{color:#d7e2dc}.strength-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.number-list{border-top:1px solid rgba(255,255,255,.2)}
.number-row{display:grid;grid-template-columns:58px 1fr;gap:16px;padding:19px 0;border-bottom:1px solid rgba(255,255,255,.16)}
.number-row strong{font-size:19px;color:var(--orange)}.number-row p{margin:0;font-size:14px}
.assurance-graphic{min-height:320px;border:1px solid rgba(255,255,255,.18);border-radius:var(--radius);padding:25px;position:relative;background:linear-gradient(145deg,rgba(255,255,255,.08),transparent 65%)}
.assurance-core{width:135px;height:135px;border-radius:50%;border:18px solid var(--orange);display:grid;place-items:center;text-align:center;font-size:13px;font-weight:800;position:absolute;left:50%;top:50%;transform:translate(-50%,-50%)}
.assurance-dot{position:absolute;border-radius:12px;background:#eef3ed;color:var(--ink);padding:8px 10px;font-size:12px;font-weight:700}.dot-a{top:32px;left:28px}.dot-b{top:38px;right:25px}.dot-c{bottom:38px;left:35px}.dot-d{bottom:27px;right:22px}
.download{background:#fff3ec}.download-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:68px;align-items:center}
.device-set{min-height:350px;position:relative;display:flex;justify-content:center;align-items:center}
.device-back{width:166px;height:286px;border:6px solid #cdd6d0;border-radius:27px;background:#e4ece7;transform:translate(62px,-4px);position:absolute}
.device-main{width:190px;height:326px;border:7px solid var(--ink);border-radius:29px;background:#fffefa;z-index:2;padding:15px;box-shadow:var(--shadow)}
.screen-line{height:10px;border-radius:5px;background:#dce6df;margin:10px 0}.screen-line.dark{width:72%;height:52px;background:var(--ink);border-radius:12px}.screen-line.orange{width:48%;background:var(--orange)}
.download-steps{list-style:none;padding:0;margin:24px 0}.download-steps li{display:flex;gap:12px;margin:12px 0;color:var(--muted);font-size:14px}.step-no{color:var(--orange);font-weight:800}
.download-actions{display:flex;flex-wrap:wrap;gap:10px}.qr{margin-top:16px;display:flex;align-items:center;gap:14px;font-size:13px;color:var(--muted)}.qr-code{width:54px;height:54px;background:repeating-linear-gradient(45deg,var(--ink) 0 3px,#fff 3px 6px);border:5px solid #fff;border-radius:6px}
.safety-note{font-size:13px;margin-top:15px;padding:10px 13px;border-left:3px solid var(--orange);background:rgba(255,255,255,.65)}
.experience-line{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:1px solid var(--line);margin-top:20px}
.experience-item{padding:26px 18px 0;border-left:1px solid var(--line);position:relative}.experience-item:first-child{border-left:0}.experience-item:before{content:"";width:10px;height:10px;background:var(--orange);border-radius:50%;position:absolute;left:-5px;top:-5px}.experience-item:first-child:before{left:0}.experience-item p{font-size:13px;margin:0}
.news-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}.lead-news,.news-row{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);transition:.2s}.lead-news:hover,.news-row:hover{border-color:#dca385;box-shadow:var(--shadow);transform:translateY(-2px)}
.lead-news{padding:25px}.cover-art{height:128px;border-radius:12px;background:linear-gradient(135deg,#dfeae3,#f8e4d7);position:relative;margin-bottom:18px;overflow:hidden}.cover-art:after{content:"壹号娱乐 · 平台动态";position:absolute;left:18px;bottom:17px;color:var(--ink);font-weight:800;font-size:17px}.news-meta{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:12px}.lead-news p{font-size:14px;margin-bottom:13px}.news-side{display:flex;flex-direction:column;gap:10px}.news-row{padding:15px 17px;display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center}.news-row h3{font-size:15px;margin:5px 0 0}.news-row time{font-size:12px;color:var(--muted)}
.empty-state{grid-column:1/-1;background:var(--white);border:1px dashed #b9c5bd;border-radius:var(--radius);padding:42px;text-align:center}.empty-icon{font-size:36px;color:var(--orange)}
.login-panel{background:var(--ink);color:#fff;border-radius:var(--radius);padding:42px;display:grid;grid-template-columns:.8fr 1.2fr;gap:46px;align-items:center}.login-panel p{color:#d6e1db}.verify-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.verify{border-left:1px solid rgba(255,255,255,.22);padding:8px 14px}.verify b{display:block;color:var(--orange);font-size:13px;margin-bottom:6px}.verify span{font-size:13px;color:#e4ece7}
.security-stack{display:grid;grid-template-columns:1fr 1.08fr 1fr;gap:16px;align-items:center}.security-unit{border:1px solid var(--line);border-radius:var(--radius);padding:23px;background:var(--white);min-height:152px}.security-unit:nth-child(2){transform:translateY(22px);background:#e7eee9}.security-unit:nth-child(4){transform:translateY(-14px);grid-column:2}.security-unit p{font-size:14px;margin:0}.security-icon{font-size:23px;color:var(--orange);margin-bottom:10px}
.timeline{max-width:880px;margin:auto;border-left:1px solid #cbd6cf;padding-left:30px}.timeline-item{position:relative;padding:0 0 26px}.timeline-item:before{content:"";width:11px;height:11px;background:#aabbb0;border:3px solid var(--paper);border-radius:50%;position:absolute;left:-37px;top:5px}.timeline-item:first-child:before{background:var(--orange);width:15px;height:15px;left:-39px}.timeline-item time{font-size:13px;color:var(--orange);font-weight:700}.timeline-item h3{margin:3px 0}.timeline-item p{font-size:14px;margin-bottom:7px}
.guide-grid{display:grid;grid-template-columns:1fr 1fr;gap:42px}.guide-steps{display:grid;gap:14px}.guide-step{display:flex;gap:16px;padding:16px;border-bottom:1px solid var(--line)}.guide-step b{color:var(--orange);font-size:18px}.guide-step p{font-size:14px;margin:4px 0 0}.faq{border-top:1px solid var(--line)}.faq-item{border-bottom:1px solid var(--line)}.faq-q{width:100%;background:none;border:0;padding:17px 0;text-align:left;display:flex;justify-content:space-between;gap:15px;color:var(--ink);font-weight:700}.faq-a{display:none;padding:0 0 17px;font-size:14px;color:var(--muted)}.faq-item.open .faq-a{display:block}.faq-item.open .faq-q i{transform:rotate(45deg)}.faq-q i{font-style:normal;color:var(--orange);font-size:22px;line-height:1;transition:.2s}
.rights{background:#eef2ed}.rights-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px}.rights-list{display:grid;grid-template-columns:1fr 1fr;gap:13px}.right{background:var(--white);border:1px solid var(--line);border-radius:12px;padding:17px;font-size:14px}.right b{display:block;color:var(--ink);margin-bottom:4px}.response-box{border-left:4px solid var(--orange);padding:20px 24px;background:var(--white)}.response-box p{font-size:14px;margin-bottom:10px}
.contact-box{border:1px solid var(--ink);border-radius:var(--radius);padding:37px;display:grid;grid-template-columns:.85fr 1.15fr;gap:50px;background:#fffefa}.contact-box p{font-size:15px}.contact-form{display:grid;grid-template-columns:1fr 1fr;gap:11px}.contact-form input,.contact-form select,.contact-form textarea{width:100%;border:1px solid #cbd3ce;background:#fffefa;border-radius:10px;padding:11px 12px;color:var(--text);outline:0}.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{border-color:var(--ink);box-shadow:0 0 0 3px rgba(24,59,53,.1)}.contact-form textarea{grid-column:1/-1;min-height:82px;resize:vertical}.form-wide{grid-column:1/-1}.privacy{font-size:12px;color:var(--muted);margin:0}.form-feedback{display:none;font-size:13px;color:var(--ink);margin:0}
.footer{background:var(--ink);color:#f7f5f0;padding:56px 0 20px}.footer-grid{display:grid;grid-template-columns:1.35fr .8fr .8fr 1fr;gap:34px;padding-bottom:38px}.footer p{color:#cbd8d0;font-size:13px}.footer h3{font-size:15px;margin-bottom:13px}.footer-links{display:grid;gap:8px}.footer-links a{font-size:13px;color:#d9e3dd}.footer-links a:hover{color:var(--orange)}.download-mini{border:1px solid rgba(255,255,255,.18);border-radius:12px;padding:14px;font-size:13px}.footer-bottom{border-top:1px solid rgba(255,255,255,.16);padding-top:18px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;color:#aec0b6;font-size:12px}
@media(max-width:1024px){.nav{gap:16px}.hero-grid,.strength-grid,.download-grid{gap:36px}.experience-line{grid-template-columns:repeat(3,1fr)}.experience-item:nth-child(4){border-left:0;margin-top:20px}.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){.container{width:min(calc(100% - 32px),var(--container))}.section{padding:56px 0}.site-header{height:66px}.nav-wrap{height:66px}.menu-toggle{display:block}.nav{display:none;position:absolute;top:66px;left:0;right:0;background:#fffefa;border-bottom:1px solid var(--line);padding:10px 16px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:0}.nav.open{display:flex}.nav a{height:43px}.nav a:after{bottom:4px;left:0}.nav a:hover:after,.nav a.active:after{left:0;width:18px}.nav-download{display:none}.hero{padding-top:30px}.hero-grid,.strength-grid,.download-grid,.news-layout,.login-panel,.guide-grid,.rights-grid,.contact-box{grid-template-columns:1fr}.product-stage{min-height:340px;order:-1}.phone{transform:scale(.9)}.status-grid{grid-template-columns:1fr 1fr}.status-item:nth-child(2){border-right:0}.status-item:nth-child(-n+2){border-bottom:1px solid var(--line)}.channel-grid{grid-template-columns:1fr}.assurance-graphic{min-height:280px}.security-stack{grid-template-columns:1fr 1fr}.security-unit:nth-child(2),.security-unit:nth-child(4){transform:none;grid-column:auto}.verify-steps{grid-template-columns:1fr}.verify{border-left:0;border-top:1px solid rgba(255,255,255,.2)}.experience-line{grid-template-columns:1fr 1fr}.rights-list{grid-template-columns:1fr 1fr}.contact-box{padding:26px}.section-head{align-items:start;flex-direction:column;margin-bottom:26px}}
@media(max-width:520px){body{font-size:15px}.brand strong{font-size:15px}.brand small{display:none}.hero-actions,.download-actions{flex-direction:column}.hero-actions .btn,.download-actions .btn{width:100%}.trust-row{display:grid;grid-template-columns:1fr}.status-item{padding:16px}.section{padding:46px 0}.product-stage{min-height:305px}.note-one{right:0}.note-two{left:0}.phone{width:210px}.channel-card{min-height:152px}.experience-line,.security-stack,.rights-list{grid-template-columns:1fr}.experience-item{border-left:0;border-bottom:1px solid var(--line);padding:18px 0}.experience-item:before{left:-5px;top:-5px}.experience-item:first-child:before{left:-5px}.experience-item:nth-child(4){margin-top:0}.security-unit{min-height:auto}.security-unit:nth-child(4){grid-column:auto}.footer-grid{grid-template-columns:1fr}.contact-form{grid-template-columns:1fr}.contact-form textarea{grid-column:auto}.login-panel{padding:27px}.lead-news{padding:18px}}

/* roulang page: article */
:root{
  --ink:#183B35;--ink-2:#244d45;--orange:#E98352;--orange-soft:#f7dfd2;
  --paper:#F7F5F0;--white:#fffefa;--mist:#DDE7E1;--line:#D9DDD7;
  --text:#202522;--muted:#68716D;--danger:#ad5a4b;
  --radius:18px;--radius-sm:12px;--shadow:0 10px 30px rgba(24,59,53,.08);
  --shadow-hover:0 16px 38px rgba(24,59,53,.14);--container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.82}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
:focus-visible{outline:3px solid rgba(233,131,82,.42);outline-offset:3px}
.container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
.section{padding:74px 0}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:28px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--ink);font-size:13px;font-weight:800;letter-spacing:.08em}
.eyebrow:before{content:"";width:25px;height:2px;background:var(--orange)}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(31px,4vw,48px);line-height:1.3;letter-spacing:-.035em;margin:14px 0 20px;font-weight:800}
h2{font-size:clamp(25px,3vw,33px);line-height:1.35;letter-spacing:-.025em;margin-bottom:14px;font-weight:800;color:var(--ink)}
h3{font-size:18px;line-height:1.5;font-weight:800}
.btn{min-height:46px;padding:11px 19px;border:1px solid transparent;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:800;line-height:1;transition:.2s ease}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--ink-2);box-shadow:var(--shadow)}
.btn-orange{background:var(--orange);color:#321e14}
.btn-orange:hover{background:#ee966c;box-shadow:var(--shadow)}
.btn-outline{border-color:#b9c5bd;background:transparent;color:var(--ink)}
.btn-outline:hover{border-color:var(--orange);background:#fffaf6}
.text-link{display:inline-flex;align-items:center;gap:7px;color:var(--ink);font-weight:800;border-bottom:1px solid rgba(24,59,53,.35);padding-bottom:2px;transition:.2s}
.text-link:hover{color:var(--orange);border-color:var(--orange)}
.badge{display:inline-flex;align-items:center;border-radius:99px;padding:5px 10px;background:var(--mist);color:var(--ink);font-size:12px;font-weight:800;line-height:1.4}
.site-header{height:76px;background:rgba(255,254,250,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;backdrop-filter:blur(10px)}
.nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:10px;min-width:max-content}
.brand-mark{width:37px;height:37px;border-radius:11px;background:var(--ink);color:#fff;display:grid;place-items:center;font-weight:800;font-size:20px;position:relative;overflow:hidden}
.brand-mark:after{content:"";position:absolute;width:24px;height:24px;border:1px solid rgba(255,255,255,.28);border-radius:9px;transform:rotate(35deg)}
.brand strong{font-size:17px;line-height:1.1;display:block}
.brand small{display:block;color:var(--muted);font-size:10px;margin-top:2px}
.nav{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav a{height:76px;display:flex;align-items:center;font-size:14px;font-weight:700;color:#4a5651;position:relative}
.nav a:after{content:"";position:absolute;left:50%;bottom:18px;width:0;height:2px;background:var(--orange);transition:.2s}
.nav a:hover,.nav a.active{color:var(--ink)}
.nav a:hover:after,.nav a.active:after{width:18px;left:calc(50% - 9px)}
.menu-toggle{display:none;border:0;background:none;color:var(--ink);padding:9px;font-size:24px}
.article-hero{padding:44px 0 45px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#f0f3ee 0%,var(--paper) 100%)}
.article-band{width:58px;height:5px;background:var(--orange);border-radius:99px;margin-bottom:24px}
.article-intro{max-width:880px}
.article-summary{max-width:770px;color:#56615c;font-size:17px;line-height:1.9;margin-bottom:0}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin:20px 0}
.article-meta time,.article-meta span{font-size:13px;color:var(--muted)}
.article-meta .meta-dot{width:4px;height:4px;background:#a9b2ac;border-radius:50%}
.breadcrumb-area{padding:18px 0;border-bottom:1px solid var(--line);background:var(--white)}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:9px;font-size:13px;color:var(--muted);margin:0}
.breadcrumb a{color:var(--ink);font-weight:700}
.breadcrumb a:hover{color:var(--orange)}
.breadcrumb i{font-style:normal;color:#a7afa9}
.reading-layout{display:grid;grid-template-columns:minmax(0,790px) 255px;justify-content:space-between;gap:58px;align-items:start}
.article-body{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(25px,5vw,58px);box-shadow:var(--shadow)}
.article-content{font-size:16px;line-height:1.95;color:#303733}
.article-content>*:first-child{margin-top:0}
.article-content h2{font-size:27px;margin:42px 0 17px;padding-top:4px;color:var(--ink)}
.article-content h3{font-size:20px;margin:30px 0 12px;color:var(--ink)}
.article-content p{margin:0 0 20px}
.article-content ul,.article-content ol{padding-left:1.4em;margin:0 0 22px}
.article-content li{margin:7px 0;padding-left:4px}
.article-content blockquote{margin:28px 0;padding:18px 21px;border-left:4px solid var(--orange);background:#f8eee8;color:#4b514e;border-radius:0 var(--radius-sm) var(--radius-sm) 0}
.article-content img{margin:30px auto;border-radius:12px;border:1px solid var(--line)}
.article-content table{width:100%;border-collapse:collapse;margin:28px 0;font-size:14px;overflow:hidden;border-radius:12px}
.article-content th,.article-content td{padding:12px;border:1px solid var(--line);text-align:left}
.article-content th{background:var(--mist);color:var(--ink)}
.article-content a{color:var(--ink);font-weight:800;border-bottom:1px solid var(--orange)}
.article-aside{position:sticky;top:98px}
.aside-card{background:#edf2ee;border:1px solid #d1ddd5;border-radius:var(--radius);padding:22px;margin-bottom:16px}
.aside-card h3{font-size:15px;color:var(--ink);margin-bottom:13px}
.toc-list{list-style:none;margin:0;padding:0;border-left:1px solid #b9c7be}
.toc-list li{padding:7px 0 7px 14px;font-size:13px;color:#52605a;line-height:1.5}
.toc-list li:first-child{color:var(--ink);font-weight:800}
.toc-list a:hover{color:var(--orange)}
.notice-wrap{padding-top:0}
.notice-card{border:1px solid #cbdad1;border-radius:var(--radius);background:var(--mist);padding:27px 30px;display:grid;grid-template-columns:44px 1fr;gap:18px}
.notice-icon{width:44px;height:44px;border-radius:13px;background:var(--ink);color:var(--orange);display:grid;place-items:center;font-size:21px;font-weight:800}
.notice-card h2{font-size:19px;margin:0 0 6px}
.notice-card p{margin:0;color:#4e5d56;font-size:15px}
.mobile-toc{display:none}
.related-grid{display:grid;grid-template-columns:1.15fr .92fr .92fr;gap:16px}
.related-card{border:1px solid var(--line);background:var(--white);border-radius:var(--radius);padding:23px;min-height:220px;display:flex;flex-direction:column;transition:.2s}
.related-card:first-child{background:var(--ink);color:#fff;border-color:var(--ink)}
.related-card:hover{transform:translateY(-3px);border-color:#dca385;box-shadow:var(--shadow-hover)}
.related-card .badge{align-self:flex-start;margin-bottom:16px}
.related-card:first-child .badge{background:rgba(255,255,255,.14);color:#fff}
.related-card h3{margin-bottom:10px}
.related-card p{font-size:14px;color:var(--muted);margin:0 0 16px;line-height:1.75}
.related-card:first-child p{color:#d4e0d9}
.related-card .card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--muted)}
.related-card:first-child .card-foot{color:#c8d8ce}
.related-card .arrow{font-size:19px;color:var(--orange)}
.return-panel{background:var(--ink);color:#fff;border-radius:var(--radius);padding:38px 42px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.return-panel h2{color:#fff;margin:0 0 8px;font-size:28px}
.return-panel p{margin:0;color:#c5d5cb}
.return-actions{display:flex;gap:12px;flex-wrap:wrap;min-width:max-content}
.footer{background:var(--ink);color:#d4e0d9;padding:56px 0 20px;margin-top:74px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:42px}
.footer .brand strong{color:#fff}
.footer p{font-size:14px;line-height:1.75;margin-bottom:0}
.footer h3{font-size:14px;color:#fff;margin:4px 0 16px}
.footer-links{display:grid;gap:9px}
.footer-links a{font-size:14px;color:#c8d8ce;transition:.2s}
.footer-links a:hover{color:var(--orange);transform:translateX(2px)}
.download-mini{border:1px solid rgba(255,255,255,.18);border-radius:var(--radius-sm);padding:15px;font-size:13px;line-height:1.75}
.footer-bottom{margin-top:42px;padding-top:19px;border-top:1px solid rgba(255,255,255,.15);display:flex;justify-content:space-between;gap:18px;font-size:12px;color:#aebfb4}
.empty-article{padding:45px 20px;text-align:center}
.empty-article h2{margin-bottom:12px}
.empty-article p{color:var(--muted);margin-bottom:22px}
@media(max-width:992px){
  .nav{gap:16px}.nav a{font-size:13px}
  .reading-layout{grid-template-columns:1fr;gap:24px}
  .article-aside{position:static;display:none}
  .mobile-toc{display:block;margin-top:26px}
  .related-grid{grid-template-columns:1fr 1fr}
  .related-card:first-child{grid-column:span 2}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr}
}
@media(max-width:768px){
  .container{width:min(calc(100% - 32px),var(--container))}
  .site-header{height:68px}.nav-wrap{position:relative}.brand strong{font-size:16px}
  .menu-toggle{display:block;margin-left:auto}
  .nav{display:none;position:absolute;top:67px;left:-16px;right:-16px;padding:12px 20px 18px;background:var(--white);border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:0}
  .nav.is-open{display:flex}.nav a{height:45px}.nav a:after{left:0;bottom:4px}.nav a:hover:after,.nav a.active:after{left:0;width:18px}
  .header-download{display:none}
  .section{padding:52px 0}.article-hero{padding:34px 0}
  .article-summary{font-size:16px}.article-body{padding:26px 21px}
  .article-content{font-size:15.5px}.article-content h2{font-size:24px;margin-top:34px}
  .notice-card{padding:22px;grid-template-columns:38px 1fr;gap:14px}
  .notice-icon{width:38px;height:38px}
  .return-panel{padding:29px 25px;display:block}.return-actions{margin-top:22px;min-width:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-bottom{display:block}.footer-bottom span{display:block;margin:6px 0}
}
@media(max-width:520px){
  h1{font-size:31px}.article-meta{gap:9px}.article-meta .meta-dot{display:none}
  .related-grid{grid-template-columns:1fr}.related-card:first-child{grid-column:auto}
  .section-head{display:block}.section-head .eyebrow{margin-bottom:10px}
  .footer-grid{grid-template-columns:1fr}.btn{width:100%}.return-actions{display:grid}
}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

/* roulang page: category1 */
:root{
      --ink:#183B35;--ink-2:#244d45;--orange:#E98352;--orange-soft:#f7dfd2;
      --paper:#F7F5F0;--white:#fffefa;--mist:#DDE7E1;--line:#D9DDD7;
      --text:#202522;--muted:#68716D;--danger:#ad5a4b;
      --radius:18px;--radius-sm:12px;--shadow:0 10px 30px rgba(24,59,53,.08);
      --shadow-hover:0 16px 38px rgba(24,59,53,.14);--container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.8}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .section{padding:82px 0}
    .section-soft{background:#eef2ed}
    .section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:32px}
    .section-head h2{margin:6px 0 0;font-size:31px;line-height:1.35;color:var(--ink);font-weight:800}
    .section-head p{margin:0;max-width:470px;color:var(--muted);font-size:15px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--ink);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:26px;height:2px;background:var(--orange)}
    .btn{min-height:46px;padding:11px 19px;border:1px solid transparent;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:700;line-height:1;transition:.2s ease}
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn:focus-visible,a:focus-visible,button:focus-visible{outline:3px solid rgba(233,131,82,.42);outline-offset:3px}
    .btn-primary{background:var(--ink);color:#fff}
    .btn-primary:hover{background:var(--ink-2);box-shadow:var(--shadow)}
    .btn-orange{background:var(--orange);color:#311d13}
    .btn-orange:hover{background:#ed9468;box-shadow:var(--shadow)}
    .btn-outline{border-color:#b9c5bd;background:transparent;color:var(--ink)}
    .btn-outline:hover{border-color:var(--orange);background:#fffaf6}
    .text-link{display:inline-flex;align-items:center;gap:7px;color:var(--ink);font-weight:700;border-bottom:1px solid rgba(24,59,53,.35);padding-bottom:2px;transition:.2s}
    .text-link:hover{color:var(--orange);border-color:var(--orange)}
    .badge{display:inline-flex;align-items:center;border-radius:99px;padding:4px 10px;background:var(--mist);color:var(--ink);font-size:12px;font-weight:800;line-height:1.4}
    .site-header{height:76px;background:rgba(255,254,250,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;backdrop-filter:blur(10px)}
    .nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .brand{display:flex;align-items:center;gap:10px;min-width:max-content}
    .brand-mark{width:37px;height:37px;border-radius:11px;background:var(--ink);color:#fff;display:grid;place-items:center;font-weight:800;font-size:20px;position:relative;overflow:hidden}
    .brand-mark:after{content:"";position:absolute;width:24px;height:24px;border:1px solid rgba(255,255,255,.28);border-radius:9px;transform:rotate(35deg)}
    .brand strong{font-size:17px;line-height:1.1;display:block}
    .brand small{display:block;color:var(--muted);font-size:10px;margin-top:2px}
    .nav{display:flex;align-items:center;gap:26px;margin-left:auto}
    .nav a{height:76px;display:flex;align-items:center;font-size:14px;font-weight:700;color:#4a5651;position:relative}
    .nav a:after{content:"";position:absolute;left:50%;bottom:18px;width:0;height:2px;background:var(--orange);transition:.2s}
    .nav a:hover,.nav a.active{color:var(--ink)}
    .nav a:hover:after,.nav a.active:after{width:18px;left:calc(50% - 9px)}
    .header-download{margin-left:2px}
    .menu-toggle{display:none;border:0;background:none;color:var(--ink);padding:9px;font-size:24px;line-height:1}
    .page-intro{padding:48px 0 46px;background:var(--white);border-bottom:1px solid var(--line)}
    .crumbs{display:flex;align-items:center;gap:9px;color:var(--muted);font-size:13px;margin-bottom:22px}
    .crumbs span{color:#a1aaa5}
    .intro-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:end}
    .page-intro h1{margin:8px 0 14px;color:var(--ink);font-size:46px;line-height:1.2;font-weight:800;letter-spacing:-.04em}
    .page-intro p{max-width:720px;margin:0;color:var(--muted);font-size:16px}
    .update-box{padding:20px 23px;border-radius:var(--radius-sm);border:1px solid #cedbd3;background:#eef3ee}
    .update-box span{display:block;color:var(--muted);font-size:12px}
    .update-box strong{display:block;margin-top:5px;color:var(--ink);font-size:17px}
    .filter-wrap{padding:27px 0;border-bottom:1px solid var(--line);background:var(--paper)}
    .filter-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
    .filter-label{font-size:14px;font-weight:800;color:var(--ink);margin-right:5px}
    .filter-tag{border:1px solid var(--line);border-radius:99px;background:var(--white);padding:7px 14px;color:#57615c;font-size:13px;font-weight:700;transition:.2s}
    .filter-tag:hover,.filter-tag.active{background:var(--ink);border-color:var(--ink);color:#fff}
    .feature-news{display:grid;grid-template-columns:220px 1fr;min-height:265px;background:var(--ink);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
    .feature-date{padding:34px 28px;background:var(--orange);color:#352015;display:flex;flex-direction:column;justify-content:space-between}
    .feature-date b{font-size:58px;line-height:1;font-weight:800;letter-spacing:-.06em}
    .feature-date span{font-weight:800;font-size:14px}
    .feature-copy{padding:35px 42px;color:#f7f5f0;display:flex;flex-direction:column;align-items:flex-start;justify-content:center}
    .feature-copy .badge{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.2)}
    .feature-copy h2{font-size:27px;line-height:1.35;margin:14px 0 10px;font-weight:800}
    .feature-copy p{margin:0 0 19px;color:#c8d8d0;font-size:15px;max-width:720px}
    .feature-copy .text-link{color:#fff;border-color:rgba(255,255,255,.45)}
    .feature-copy .text-link:hover{color:var(--orange);border-color:var(--orange)}
    .news-list{border-top:1px solid var(--line)}
    .news-item{display:grid;grid-template-columns:130px 1fr auto;align-items:center;gap:28px;padding:26px 10px;border-bottom:1px solid var(--line);transition:.22s ease}
    .news-item:hover{padding-left:18px;padding-right:18px;border-radius:var(--radius-sm);background:var(--white);box-shadow:var(--shadow)}
    .news-meta{display:flex;flex-direction:column;gap:5px}
    .news-meta time{font-size:13px;color:var(--muted)}
    .news-copy h3{color:var(--ink);font-size:19px;line-height:1.4;margin:0 0 5px;font-weight:800}
    .news-copy p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
    .arrow-link{width:40px;height:40px;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;color:var(--ink);font-size:20px;transition:.2s}
    .news-item:hover .arrow-link{background:var(--orange);border-color:var(--orange);color:#352015;transform:translateX(3px)}
    .more-area{text-align:center;padding-top:30px}
    .notice-panel{display:grid;grid-template-columns:78px 1fr;gap:22px;padding:30px;background:#fffaf6;border:1px solid #edd7c9;border-radius:var(--radius)}
    .notice-icon{width:56px;height:56px;border-radius:16px;background:var(--orange-soft);color:#813f25;display:grid;place-items:center;font-size:27px;font-weight:800}
    .notice-panel h2{font-size:22px;color:var(--ink);margin:0 0 8px;font-weight:800}
    .notice-panel p{margin:0;color:var(--muted);font-size:15px}
    .notice-points{display:flex;gap:12px;flex-wrap:wrap;margin-top:15px}
    .notice-points span{font-size:13px;color:#50615a;font-weight:700}
    .notice-points span:before{content:"✓";color:var(--orange);font-weight:800;margin-right:6px}
    .faq-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:72px;align-items:start}
    .faq-layout h2{font-size:32px;line-height:1.35;color:var(--ink);margin:8px 0 13px;font-weight:800}
    .faq-layout p{color:var(--muted);margin:0}
    .faq-list{border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-question{width:100%;border:0;background:none;padding:19px 0;display:flex;align-items:center;justify-content:space-between;gap:20px;text-align:left;color:var(--ink);font-weight:800;font-size:16px}
    .faq-symbol{width:27px;height:27px;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;flex:0 0 auto;color:var(--orange);font-size:19px;line-height:1}
    .faq-answer{display:none;padding:0 42px 20px 0;color:var(--muted);font-size:15px}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-symbol:before{content:"−"}
    .faq-item:not(.open) .faq-symbol:before{content:"+"}
    .faq-symbol{font-size:0}
    .footer{background:var(--ink);color:#d4e0da;padding:63px 0 24px}
    .footer-grid{display:grid;grid-template-columns:1.35fr .9fr .9fr 1fr;gap:42px}
    .footer p{font-size:14px;line-height:1.8;color:#b9cbc0;max-width:300px}
    .footer h3{color:#fff;font-size:15px;margin:3px 0 16px;font-weight:800}
    .footer-links{display:grid;gap:8px}
    .footer-links a{font-size:14px;color:#c4d2cb;transition:.2s}
    .footer-links a:hover{color:var(--orange);transform:translateX(2px)}
    .download-mini{border:1px solid rgba(255,255,255,.18);border-radius:var(--radius-sm);padding:16px;color:#e2ece6;font-size:14px;line-height:1.8}
    .footer-bottom{margin-top:46px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);display:flex;justify-content:space-between;gap:20px;color:#aebfb6;font-size:13px}
    @media (max-width:1024px){
      .nav{gap:16px}.nav a{font-size:13px}.header-download{display:none}
      .intro-grid,.faq-layout{gap:34px}.feature-news{grid-template-columns:180px 1fr}
      .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
    }
    @media (max-width:768px){
      .container{width:min(calc(100% - 32px),var(--container))}
      .site-header{height:68px}.nav-wrap{position:relative}.brand strong{font-size:16px}
      .menu-toggle{display:block;margin-left:auto}.nav{display:none;position:absolute;top:67px;left:-16px;right:-16px;padding:10px 22px 18px;background:var(--white);border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:0;margin:0}
      .nav.open{display:flex}.nav a{height:48px;border-bottom:1px solid #eef0ec}.nav a:after{left:0;bottom:5px}.nav a:hover:after,.nav a.active:after{left:0;width:18px}
      .section{padding:56px 0}.section-head{display:block;margin-bottom:25px}.section-head h2{font-size:27px}.section-head p{margin-top:10px}
      .page-intro{padding:37px 0}.intro-grid{grid-template-columns:1fr;gap:24px}.page-intro h1{font-size:35px}
      .feature-news{grid-template-columns:1fr}.feature-date{min-height:110px;padding:23px;flex-direction:row;align-items:flex-end}.feature-date b{font-size:45px}.feature-copy{padding:29px 24px}.feature-copy h2{font-size:23px}
      .news-item{grid-template-columns:1fr auto;gap:14px;padding:21px 0}.news-meta{grid-column:1 / -1;flex-direction:row;align-items:center}.news-copy h3{font-size:17px}.news-copy p{font-size:13px}.arrow-link{grid-column:2;grid-row:2}
      .notice-panel{grid-template-columns:1fr;gap:14px;padding:24px}.faq-layout{grid-template-columns:1fr;gap:25px}
    }
    @media (max-width:520px){
      body{font-size:15px}.container{width:min(calc(100% - 28px),var(--container))}
      .page-intro h1{font-size:31px}.page-intro p{font-size:15px}.filter-wrap{padding:20px 0}.filter-row{gap:8px}.filter-label{width:100%}
      .filter-tag{padding:6px 11px}.feature-copy h2{font-size:21px}.feature-copy p{font-size:14px}
      .news-item:hover{padding-left:8px;padding-right:8px}.notice-panel h2{font-size:20px}
      .footer{padding-top:48px}.footer-grid{grid-template-columns:1fr;gap:27px}.footer-bottom{margin-top:32px;display:block}.footer-bottom span{display:block;margin-bottom:8px}
    }

/* roulang page: category2 */
:root{
      --ink:#183B35;--ink-2:#244d45;--orange:#E98352;--orange-soft:#f7dfd2;
      --paper:#F7F5F0;--white:#fffefa;--mist:#DDE7E1;--line:#D9DDD7;
      --text:#202522;--muted:#68716D;--danger:#ad5a4b;
      --radius:18px;--radius-sm:12px;--shadow:0 10px 30px rgba(24,59,53,.08);
      --shadow-hover:0 16px 38px rgba(24,59,53,.14);--container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.8}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(233,131,82,.38);outline-offset:3px}
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .section{padding:84px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:34px}
    .section-head h2{margin:6px 0 0;font-size:32px;line-height:1.35;letter-spacing:-.03em;color:var(--ink)}
    .section-head p{max-width:520px;margin:0;color:var(--muted);font-size:15px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--ink);font-size:13px;font-weight:700;letter-spacing:.08em}
    .eyebrow:before{content:"";width:26px;height:2px;background:var(--orange)}
    .badge{display:inline-flex;align-items:center;border-radius:99px;padding:4px 10px;background:var(--mist);color:var(--ink);font-size:12px;font-weight:700;line-height:1.45}
    .badge.orange{background:var(--orange-soft);color:#7c422b}
    .btn{min-height:46px;padding:11px 19px;border:1px solid transparent;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:700;line-height:1;transition:.2s ease}
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn-primary{background:var(--ink);color:#fff}
    .btn-primary:hover{background:var(--ink-2);box-shadow:var(--shadow)}
    .btn-orange{background:var(--orange);color:#321d13}
    .btn-orange:hover{background:#ed9468;box-shadow:var(--shadow)}
    .btn-outline{background:transparent;color:var(--ink);border-color:#b9c5bd}
    .btn-outline:hover{background:#fffaf6;border-color:var(--orange)}
    .text-link{display:inline-flex;align-items:center;gap:7px;color:var(--ink);font-weight:700;border-bottom:1px solid rgba(24,59,53,.35);padding-bottom:2px;transition:.2s}
    .text-link:hover{color:var(--orange);border-color:var(--orange)}
    .site-header{height:76px;background:rgba(255,254,250,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;backdrop-filter:blur(10px)}
    .nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .brand{display:flex;align-items:center;gap:10px;min-width:max-content}
    .brand-mark{width:37px;height:37px;border-radius:11px;background:var(--ink);color:#fff;display:grid;place-items:center;font-weight:800;font-size:20px;position:relative;overflow:hidden}
    .brand-mark:after{content:"";position:absolute;width:24px;height:24px;border:1px solid rgba(255,255,255,.28);border-radius:9px;transform:rotate(35deg)}
    .brand strong{font-size:17px;line-height:1.1;display:block}
    .brand small{display:block;color:var(--muted);font-size:10px;margin-top:2px}
    .nav{display:flex;align-items:center;gap:26px;margin-left:auto}
    .nav a{height:76px;display:flex;align-items:center;font-size:14px;font-weight:700;color:#4a5651;position:relative}
    .nav a:after{content:"";position:absolute;left:50%;bottom:18px;width:0;height:2px;background:var(--orange);transition:.2s}
    .nav a:hover,.nav a.active{color:var(--ink)}
    .nav a:hover:after,.nav a.active:after{width:18px;left:calc(50% - 9px)}
    .header-download{margin-left:8px}
    .menu-toggle{display:none;border:0;background:none;color:var(--ink);padding:9px;font-size:24px}
    .page-intro{padding:54px 0 46px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#f7f5f0 0%,#edf1ec 100%)}
    .breadcrumb{display:flex;align-items:center;gap:9px;color:var(--muted);font-size:13px;margin-bottom:24px}
    .breadcrumb span:last-child{color:var(--ink);font-weight:700}
    .intro-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:end}
    h1{font-size:46px;line-height:1.18;letter-spacing:-.05em;color:var(--ink);margin:10px 0 16px}
    .intro-copy p{margin:0;max-width:730px;color:var(--muted);font-size:17px}
    .update-box{padding:20px 22px;border-left:3px solid var(--orange);background:rgba(255,254,250,.75);border-radius:0 var(--radius-sm) var(--radius-sm) 0}
    .update-box b{display:block;color:var(--ink);font-size:14px;margin-bottom:4px}
    .update-box span{font-size:13px;color:var(--muted)}
    .device-section{padding-top:74px}
    .device-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
    .device-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--white);padding:34px;box-shadow:var(--shadow);position:relative;overflow:hidden;transition:.22s ease}
    .device-card:hover{transform:translateY(-3px);border-color:#dca385;box-shadow:var(--shadow-hover)}
    .device-card.android{background:#edf2ee}
    .device-card.ios{margin-top:52px;background:#fff7f2}
    .device-icon{width:54px;height:54px;display:grid;place-items:center;border-radius:16px;background:var(--ink);color:#fff;font-size:23px;font-weight:800;margin-bottom:23px}
    .ios .device-icon{background:var(--orange);color:#3d281d}
    .device-card h2{font-size:27px;color:var(--ink);margin:0 0 8px}
    .device-card p{max-width:400px;font-size:14px;color:var(--muted);margin:0 0 19px}
    .device-meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}
    .qr-box{position:absolute;right:30px;bottom:29px;width:96px;height:96px;padding:8px;background:#fff;border:1px solid var(--line);border-radius:12px;display:grid;place-items:center}
    .qr-pattern{width:72px;height:72px;background:repeating-linear-gradient(90deg,var(--ink) 0 5px,transparent 5px 9px),repeating-linear-gradient(0deg,var(--ink) 0 4px,transparent 4px 8px);opacity:.78}
    .qr-box span{position:absolute;top:101px;white-space:nowrap;color:var(--muted);font-size:11px}
    .steps-wrap{background:var(--ink);color:#f7f5f0}
    .steps-wrap .section-head h2,.steps-wrap .eyebrow{color:#fffefa}
    .steps-wrap .section-head p{color:#c6d2cc}
    .steps-wrap .eyebrow:before{background:var(--orange)}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid rgba(255,255,255,.22)}
    .step{padding:25px 24px 8px;border-right:1px solid rgba(255,255,255,.18);min-height:194px}
    .step:last-child{border-right:0}
    .step-no{display:block;color:var(--orange);font-size:14px;font-weight:800;letter-spacing:.1em;margin-bottom:28px}
    .step h3{font-size:18px;margin:0 0 8px;color:#fff}
    .step p{margin:0;color:#cbd8d0;font-size:14px;line-height:1.75}
    .preview-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px;align-items:center}
    .phone-preview{margin:auto;width:230px;height:424px;border:8px solid #16352f;border-radius:35px;background:#fffefa;padding:17px;box-shadow:0 18px 42px rgba(24,59,53,.19);position:relative}
    .phone-speaker{width:68px;height:5px;background:#d4d9d5;border-radius:8px;margin:0 auto 15px}
    .phone-top{display:flex;align-items:center;justify-content:space-between;color:var(--ink);font-size:11px;font-weight:800}
    .screen-title{font-size:19px;font-weight:800;color:var(--ink);margin:20px 0 13px}
    .screen-notice{padding:11px;border-radius:10px;background:#e6eee9;color:var(--ink);font-size:11px;line-height:1.55}
    .screen-cards{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:10px}
    .screen-card{min-height:72px;padding:9px;border:1px solid #e1e5e1;border-radius:10px;font-size:10px;color:var(--muted)}
    .screen-card b{display:block;color:var(--ink);font-size:12px;margin-top:6px}
    .screen-nav{position:absolute;bottom:17px;left:17px;right:17px;border-top:1px solid var(--line);padding-top:10px;display:flex;justify-content:space-around;color:#7b8580;font-size:10px}
    .feature-list{display:grid;gap:13px}
    .feature-row{display:grid;grid-template-columns:48px 1fr;gap:15px;align-items:center;padding:18px 0;border-bottom:1px solid var(--line)}
    .feature-row:last-child{border-bottom:0}
    .feature-icon{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;background:var(--mist);color:var(--ink);font-weight:800}
    .feature-row h3{color:var(--ink);font-size:17px;margin:0 0 2px}
    .feature-row p{margin:0;color:var(--muted);font-size:14px}
    .timeline{max-width:930px;margin:0 auto;position:relative}
    .timeline:before{content:"";position:absolute;left:110px;top:8px;bottom:8px;width:1px;background:var(--line)}
    .timeline-row{display:grid;grid-template-columns:88px 1fr;gap:43px;position:relative;padding:0 0 27px}
    .timeline-row:last-child{padding-bottom:0}
    .timeline-date{text-align:right;color:var(--muted);font-size:13px;padding-top:2px}
    .timeline-content{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-sm);padding:19px 22px;position:relative;transition:.2s}
    .timeline-content:before{content:"";width:11px;height:11px;background:var(--paper);border:3px solid var(--ink);border-radius:50%;position:absolute;left:-39px;top:22px}
    .timeline-row:first-child .timeline-content:before{border-color:var(--orange);background:var(--orange)}
    .timeline-content:hover{border-color:#dca385;box-shadow:var(--shadow)}
    .timeline-content h3{font-size:17px;line-height:1.5;color:var(--ink);margin:7px 0 5px}
    .timeline-content p{color:var(--muted);font-size:14px;margin:0}
    .issue-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .issue-card{border:1px solid var(--line);border-radius:var(--radius);padding:27px;background:var(--white);transition:.2s}
    .issue-card:nth-child(2){background:#eef3ef}
    .issue-card:nth-child(3){background:#fff5ee}
    .issue-card:hover{transform:translateY(-3px);border-color:#dca385;box-shadow:var(--shadow-hover)}
    .issue-card h3{color:var(--ink);font-size:18px;margin:15px 0 8px}
    .issue-card p{color:var(--muted);font-size:14px;margin:0}
    .issue-number{font-size:13px;font-weight:800;color:var(--orange)}
    .faq-area{background:#edf1ec}
    .faq-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:65px;align-items:start}
    .faq-intro h2{font-size:32px;line-height:1.35;color:var(--ink);margin:9px 0 13px}
    .faq-intro p{color:var(--muted);margin:0 0 24px}
    .accordion{display:grid;gap:10px}
    .faq-item{border:1px solid var(--line);background:var(--white);border-radius:var(--radius-sm);overflow:hidden}
    .faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;border:0;background:transparent;padding:18px 20px;text-align:left;font-size:16px;font-weight:700;color:var(--ink)}
    .faq-question span:last-child{font-size:22px;font-weight:400;line-height:1;color:var(--orange)}
    .faq-answer{display:none;padding:0 20px 19px;color:var(--muted);font-size:14px;line-height:1.8}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child:before{content:"−"}
    .faq-item.open .faq-question span:last-child{font-size:0}
    .faq-item.open .faq-question span:last-child:before{font-size:22px}
    .feedback-box{margin-top:24px;padding:18px 20px;border-left:3px solid var(--orange);background:#fffaf6;color:var(--muted);font-size:14px}
    .feedback-box strong{color:var(--ink)}
    .footer{background:var(--ink);color:#d8e1db;padding:64px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.35fr .9fr .9fr .9fr;gap:42px}
    .footer p{font-size:14px;line-height:1.8;margin:0;max-width:300px}
    .footer h3{font-size:15px;color:#fff;margin:3px 0 15px}
    .footer-links{display:grid;gap:8px}
    .footer-links a{font-size:14px;color:#c6d2cc;transition:.2s}
    .footer-links a:hover{color:var(--orange)}
    .download-mini{border:1px solid rgba(255,255,255,.2);border-radius:12px;padding:15px 16px;font-size:13px;line-height:1.7}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.15);margin-top:46px;padding-top:19px;display:flex;justify-content:space-between;gap:18px;font-size:12px;color:#b9cbc0}
    @media (max-width:1024px){
      .nav{gap:17px}
      .header-download{display:none}
      .intro-grid,.preview-layout,.faq-layout{gap:38px}
      .device-layout{gap:14px}
      .device-card{padding:27px}
      .qr-box{display:none}
      .footer-grid{gap:25px}
    }
    @media (max-width:768px){
      .container{width:min(calc(100% - 32px),var(--container))}
      .section{padding:56px 0}
      .section-head{display:block;margin-bottom:26px}
      .section-head p{margin-top:12px}
      .site-header{height:68px}
      .nav-wrap{position:relative}
      .menu-toggle{display:block;margin-left:auto}
      .nav{display:none;position:absolute;left:0;right:0;top:67px;padding:12px 16px 18px;background:var(--white);border-bottom:1px solid var(--line);box-shadow:var(--shadow);margin:0;align-items:stretch;flex-direction:column;gap:0}
      .nav.show{display:flex}
      .nav a{height:46px}
      .nav a:after{left:0;bottom:5px}
      .nav a:hover:after,.nav a.active:after{left:0;width:18px}
      h1{font-size:35px}
      .page-intro{padding:38px 0}
      .intro-grid,.preview-layout,.faq-layout{grid-template-columns:1fr}
      .update-box{margin-top:8px}
      .device-layout{grid-template-columns:1fr}
      .device-card.ios{margin-top:0}
      .steps{grid-template-columns:repeat(2,1fr)}
      .step:nth-child(2){border-right:0}
      .step:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.18)}
      .phone-preview{margin:0 auto}
      .issue-grid{grid-template-columns:1fr}
      .timeline:before{left:73px}
      .timeline-row{grid-template-columns:55px 1fr;gap:30px}
      .timeline-content:before{left:-28px}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-bottom{flex-direction:column}
    }
    @media (max-width:520px){
      body{font-size:15px}
      .brand strong{font-size:16px}
      .section-head h2,.faq-intro h2{font-size:27px}
      h1{font-size:31px}
      .device-card h2{font-size:24px}
      .device-card{padding:24px}
      .device-meta{max-width:240px}
      .steps{grid-template-columns:1fr}
      .step{border-right:0;border-bottom:1px solid rgba(255,255,255,.18);min-height:auto;padding:22px 5px}
      .step:last-child{border-bottom:0}
      .step-no{margin-bottom:12px}
      .phone-preview{transform:scale(.92);margin:-15px auto}
      .timeline:before{left:61px}
      .timeline-row{grid-template-columns:45px 1fr;gap:27px}
      .timeline-date{font-size:11px}
      .timeline-content{padding:16px}
      .timeline-content:before{left:-25px}
      .footer-grid{grid-template-columns:1fr;gap:27px}
    }
    @media (prefers-reduced-motion:reduce){
      *,*:before,*:after{scroll-behavior:auto!important;transition:none!important}
    }

/* roulang page: category3 */
:root{
      --ink:#183B35;--ink-2:#244d45;--orange:#E98352;--orange-soft:#f7dfd2;
      --paper:#F7F5F0;--white:#fffefa;--mist:#DDE7E1;--line:#D9DDD7;
      --text:#202522;--muted:#68716D;--danger:#ad5a4b;
      --radius:18px;--radius-sm:12px;--shadow:0 10px 30px rgba(24,59,53,.08);
      --shadow-hover:0 16px 38px rgba(24,59,53,.14);--container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.8}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    button:focus-visible,a:focus-visible{outline:3px solid rgba(233,131,82,.42);outline-offset:3px}
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .section{padding:86px 0}
    .section-tight{padding:42px 0}
    .section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:22px;margin-bottom:32px}
    .section-head h2{margin:8px 0 0;font-size:31px;line-height:1.3;letter-spacing:-.03em;color:var(--ink)}
    .section-head p{max-width:520px;margin:8px 0 0;color:var(--muted);font-size:15px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--ink);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:25px;height:2px;background:var(--orange)}
    .btn{min-height:46px;padding:11px 19px;border:1px solid transparent;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:700;line-height:1;transition:transform .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease}
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn-primary{background:var(--ink);color:#fff}
    .btn-primary:hover{background:var(--ink-2);box-shadow:var(--shadow)}
    .btn-outline{border-color:#afbeb5;background:transparent;color:var(--ink)}
    .btn-outline:hover{border-color:var(--orange);background:#fffaf6}
    .badge{display:inline-flex;align-items:center;border-radius:99px;padding:4px 10px;background:var(--mist);color:var(--ink);font-size:12px;font-weight:800;line-height:1.4}
    .site-header{height:76px;background:rgba(255,254,250,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;backdrop-filter:blur(10px)}
    .nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .brand{display:flex;align-items:center;gap:10px;min-width:max-content}
    .brand-mark{width:37px;height:37px;border-radius:11px;background:var(--ink);color:#fff;display:grid;place-items:center;font-weight:800;font-size:20px;position:relative;overflow:hidden}
    .brand-mark:after{content:"";position:absolute;width:24px;height:24px;border:1px solid rgba(255,255,255,.28);border-radius:9px;transform:rotate(35deg)}
    .brand strong{font-size:17px;line-height:1.1;display:block}
    .brand small{display:block;color:var(--muted);font-size:10px;margin-top:2px}
    .nav{display:flex;align-items:center;gap:26px;margin-left:auto}
    .nav a{height:76px;display:flex;align-items:center;font-size:14px;font-weight:700;color:#4a5651;position:relative}
    .nav a:after{content:"";position:absolute;left:50%;bottom:18px;width:0;height:2px;background:var(--orange);transition:.2s}
    .nav a:hover,.nav a.active{color:var(--ink)}
    .nav a:hover:after,.nav a.active:after{width:18px;left:calc(50% - 9px)}
    .header-download{margin-left:4px}
    .menu-toggle{display:none;border:0;background:none;color:var(--ink);padding:9px;font-size:24px}
    .page-intro{padding:54px 0 48px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#f7f5f0 0%,#eef2ed 100%)}
    .breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;color:var(--muted);font-size:13px;margin-bottom:26px}
    .breadcrumb span{color:#a0aaa4}
    .intro-grid{display:grid;grid-template-columns:1.2fr .8fr;align-items:end;gap:48px}
    h1{margin:8px 0 15px;color:var(--ink);font-size:46px;line-height:1.2;letter-spacing:-.045em;font-weight:800}
    .intro-copy{max-width:680px;margin:0;color:#52605a;font-size:17px}
    .update-panel{border-left:2px solid var(--orange);padding:8px 0 8px 20px}
    .update-panel strong{display:block;color:var(--ink);font-size:15px}
    .update-panel span{display:block;margin-top:3px;color:var(--muted);font-size:14px}
    .verify-section{background:var(--ink);color:#f7f5f0}
    .verify-section .eyebrow{color:#f6f3ed}
    .verify-section .eyebrow:before{background:var(--orange)}
    .verify-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:72px;align-items:center}
    .verify-copy h2{margin:9px 0 16px;font-size:33px;line-height:1.35;color:#fffefa}
    .verify-copy p{margin:0;color:#c5d3cb;max-width:425px}
    .verify-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .verify-step{border:1px solid rgba(221,231,225,.26);border-radius:var(--radius-sm);padding:22px 18px;min-height:195px;background:rgba(255,255,255,.035)}
    .step-icon{width:42px;height:42px;border-radius:13px;background:rgba(233,131,82,.18);color:var(--orange);display:grid;place-items:center;margin-bottom:19px}
    .step-icon svg,.mechanism-icon svg,.warn-icon svg,.article-symbol svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
    .verify-step b{display:block;color:#fffefa;font-size:16px;margin-bottom:6px}
    .verify-step p{margin:0;color:#c9d5cf;font-size:13px;line-height:1.75}
    .mechanism-layout{display:grid;grid-template-columns:.78fr 1.22fr;gap:62px;align-items:start}
    .mechanism-note{padding:28px;border-radius:var(--radius);background:#e8eeea;border:1px solid #d1ddd5}
    .mechanism-note h3{color:var(--ink);font-size:22px;margin:0 0 12px}
    .mechanism-note p{margin:0;color:#52605a;font-size:15px}
    .mechanism-note .mini-line{height:1px;background:#c5d2ca;margin:23px 0}
    .mini-line + span{font-size:13px;color:var(--ink);font-weight:700}
    .mechanism-flow{position:relative;padding-left:32px}
    .mechanism-flow:before{content:"";position:absolute;left:8px;top:20px;bottom:22px;width:1px;background:#b9c9c0}
    .mechanism-row{display:grid;grid-template-columns:54px 1fr;gap:20px;position:relative;padding:0 0 25px}
    .mechanism-row:last-child{padding-bottom:0}
    .mechanism-icon{width:48px;height:48px;border-radius:14px;border:1px solid #cad6cf;background:var(--white);color:var(--ink);display:grid;place-items:center;position:relative;z-index:1}
    .mechanism-row:nth-child(2) .mechanism-icon{color:var(--orange)}
    .mechanism-row h3{margin:2px 0 5px;color:var(--ink);font-size:18px}
    .mechanism-row p{margin:0;color:var(--muted);font-size:14px;max-width:620px}
    .risk-wrap{background:#fbf0e9;border-top:1px solid #efd4c4;border-bottom:1px solid #efd4c4}
    .risk-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
    .risk-heading h2{margin:9px 0 15px;font-size:32px;line-height:1.35;color:#6f3827}
    .risk-heading p{margin:0;color:#785a4e;max-width:485px}
    .risk-list{display:grid;gap:11px}
    .risk-item{background:rgba(255,254,250,.72);border:1px solid #edcfbd;border-radius:var(--radius-sm);padding:15px 17px;display:flex;gap:13px;align-items:flex-start}
    .warn-icon{flex:0 0 34px;width:34px;height:34px;border-radius:10px;background:#f7dfd2;color:#9a503c;display:grid;place-items:center}
    .warn-icon svg{width:18px;height:18px}
    .risk-item b{display:block;color:#683626;font-size:15px;line-height:1.45}
    .risk-item p{margin:2px 0 0;color:#795d51;font-size:13px;line-height:1.65}
    .advice-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .advice-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:0 7px 20px rgba(24,59,53,.04);transition:.2s ease}
    .advice-card:hover{transform:translateY(-3px);border-color:#dca385;box-shadow:var(--shadow-hover)}
    .advice-card h3{font-size:21px;color:var(--ink);margin:0 0 18px}
    .advice-card ul{list-style:none;margin:0;padding:0}
    .advice-card li{padding:12px 0 12px 23px;border-top:1px solid #e5e8e4;color:#52605a;font-size:14px;position:relative}
    .advice-card li:first-child{border-top:0;padding-top:0}
    .advice-card li:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--orange);position:absolute;left:1px;top:21px}
    .advice-card li:first-child:before{top:9px}
    .articles-area{background:#edf1ec}
    .article-grid{display:grid;grid-template-columns:1.18fr .82fr .82fr;gap:17px}
    .article-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:25px;min-height:245px;display:flex;flex-direction:column;transition:.2s ease}
    .article-card:hover{transform:translateY(-3px);border-color:#dca385;box-shadow:var(--shadow-hover)}
    .article-card.featured{background:var(--ink);border-color:var(--ink)}
    .article-top{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:22px}
    .article-card time{font-size:12px;color:var(--muted)}
    .featured time{color:#bed0c6}
    .article-symbol{width:40px;height:40px;border-radius:12px;background:var(--mist);color:var(--ink);display:grid;place-items:center}
    .featured .article-symbol{background:rgba(233,131,82,.18);color:var(--orange)}
    .article-card h3{font-size:20px;line-height:1.45;color:var(--ink);margin:0 0 10px}
    .featured h3{color:#fffefa}
    .article-card p{font-size:14px;line-height:1.75;color:var(--muted);margin:0 0 18px}
    .featured p{color:#c6d4cc}
    .article-card .text-link{margin-top:auto;align-self:flex-start}
    .featured .text-link{color:#fffefa;border-color:rgba(255,255,255,.42)}
    .featured .text-link:hover{color:var(--orange);border-color:var(--orange)}
    .faq-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:66px;align-items:start}
    .faq-copy h2{font-size:32px;line-height:1.35;color:var(--ink);margin:8px 0 14px}
    .faq-copy p{margin:0;color:var(--muted)}
    .faq-list{border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-question{width:100%;padding:20px 2px;border:0;background:transparent;color:var(--ink);font-size:16px;font-weight:750;text-align:left;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .faq-question span:last-child{width:26px;height:26px;border-radius:50%;background:var(--mist);display:grid;place-items:center;font-size:20px;line-height:1;font-weight:400;transition:.2s}
    .faq-answer{display:none;padding:0 42px 21px 2px;color:var(--muted);font-size:14px;line-height:1.85}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{background:var(--orange-soft);color:#7a422f;transform:rotate(45deg)}
    .feedback-band{padding:42px 0 80px}
    .feedback-box{background:var(--white);border:1px solid #b8c6be;border-radius:var(--radius);padding:35px 39px;display:flex;align-items:center;justify-content:space-between;gap:28px;box-shadow:var(--shadow)}
    .feedback-box h2{margin:0 0 7px;color:var(--ink);font-size:27px}
    .feedback-box p{margin:0;color:var(--muted);font-size:15px}
    .feedback-actions{display:flex;flex-wrap:wrap;gap:11px;flex-shrink:0}
    .footer{background:var(--ink);color:#d7e1db;padding:58px 0 18px}
    .footer-grid{display:grid;grid-template-columns:1.45fr .8fr .8fr .8fr;gap:42px}
    .footer p{color:#b9cbc0;font-size:14px;line-height:1.8;margin-bottom:0}
    .footer h3{font-size:15px;color:#fffefa;margin:3px 0 16px}
    .footer-links{display:grid;gap:8px}
    .footer-links a{font-size:14px;color:#b9cbc0;transition:.2s}
    .footer-links a:hover{color:var(--orange)}
    .download-mini{border:1px solid rgba(221,231,225,.25);border-radius:12px;padding:14px;font-size:13px;line-height:1.75}
    .footer-bottom{margin-top:42px;padding-top:18px;border-top:1px solid rgba(221,231,225,.16);display:flex;justify-content:space-between;gap:18px;color:#adc0b5;font-size:12px}
    @media (max-width:1024px){
      .nav{gap:17px}
      .nav a{font-size:13px}
      .verify-grid,.mechanism-layout,.faq-layout{gap:42px}
      .footer-grid{grid-template-columns:1.25fr 1fr 1fr}
      .footer-grid>div:last-child{grid-column:2/4}
    }
    @media (max-width:768px){
      .container{width:min(calc(100% - 32px),var(--container))}
      .section{padding:56px 0}
      .site-header{height:68px}
      .nav-wrap{position:relative}
      .nav{display:none;position:absolute;top:67px;left:-16px;right:-16px;padding:10px 20px 18px;background:var(--white);border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:0}
      .nav.open{display:flex}
      .nav a{height:46px;font-size:15px}
      .nav a:after{left:0;bottom:4px}
      .nav a:hover:after,.nav a.active:after{left:0;width:18px}
      .header-download{display:none}
      .menu-toggle{display:block}
      .page-intro{padding:39px 0 37px}
      .intro-grid,.verify-grid,.mechanism-layout,.risk-grid,.faq-layout{grid-template-columns:1fr;gap:27px}
      h1{font-size:36px}
      .section-head{display:block;margin-bottom:26px}
      .section-head h2{font-size:28px}
      .verify-steps{grid-template-columns:1fr}
      .verify-step{min-height:0}
      .advice-grid,.article-grid{grid-template-columns:1fr}
      .article-card{min-height:0}
      .feedback-box{padding:28px;display:block}
      .feedback-actions{margin-top:21px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:31px}
      .footer-grid>div:first-child{grid-column:1/3}
      .footer-grid>div:last-child{grid-column:auto}
    }
    @media (max-width:520px){
      body{font-size:15px}
      .container{width:calc(100% - 28px)}
      h1{font-size:31px}
      .intro-copy{font-size:15px}
      .section-head h2,.verify-copy h2,.risk-heading h2,.faq-copy h2{font-size:26px}
      .verify-step{padding:18px}
      .mechanism-note,.advice-card{padding:23px}
      .mechanism-layout{gap:25px}
      .mechanism-flow{padding-left:22px}
      .mechanism-flow:before{left:6px}
      .mechanism-row{grid-template-columns:46px 1fr;gap:15px}
      .mechanism-icon{width:42px;height:42px}
      .risk-item{padding:13px}
      .feedback-box{padding:24px}
      .feedback-box h2{font-size:23px}
      .footer-grid{grid-template-columns:1fr;gap:27px}
      .footer-grid>div:first-child,.footer-grid>div:last-child{grid-column:auto}
      .footer-bottom{display:block;line-height:2}
      .footer-bottom span{display:block}
    }
    @media (prefers-reduced-motion:reduce){
      html{scroll-behavior:auto}
      *,*:before,*:after{transition-duration:.01ms!important;animation-duration:.01ms!important}
    }

/* roulang page: category4 */
:root{
      --ink:#183B35;--ink-2:#244d45;--orange:#E98352;--orange-soft:#f7dfd2;
      --paper:#F7F5F0;--white:#fffefa;--mist:#DDE7E1;--line:#D9DDD7;
      --text:#202522;--muted:#68716D;--danger:#ad5a4b;
      --radius:18px;--radius-sm:12px;--shadow:0 10px 30px rgba(24,59,53,.08);
      --shadow-hover:0 16px 38px rgba(24,59,53,.14);--container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.8}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(233,131,82,.35);outline-offset:3px}
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .section{padding:84px 0}
    .section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:34px}
    .section-head h2{margin:7px 0 0;color:var(--ink);font-size:31px;line-height:1.35;font-weight:800}
    .section-head p{max-width:500px;margin:0;color:var(--muted);font-size:15px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--ink);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:26px;height:2px;background:var(--orange)}
    .badge{display:inline-flex;align-items:center;border-radius:99px;padding:4px 10px;background:var(--mist);color:var(--ink);font-size:12px;font-weight:800;line-height:1.4}
    .btn{min-height:46px;padding:11px 19px;border:1px solid transparent;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:800;line-height:1;transition:transform .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease}
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn-primary{background:var(--ink);color:#fff}
    .btn-primary:hover{background:var(--ink-2);box-shadow:var(--shadow)}
    .btn-orange{background:var(--orange);color:#321e14}
    .btn-orange:hover{background:#ee986e;box-shadow:var(--shadow)}
    .btn-outline{border-color:#b9c5bd;background:transparent;color:var(--ink)}
    .btn-outline:hover{border-color:var(--orange);background:#fffaf6}
    .text-link{display:inline-flex;align-items:center;gap:7px;color:var(--ink);font-weight:800;border-bottom:1px solid rgba(24,59,53,.35);padding-bottom:2px;transition:.2s}
    .text-link:hover{color:var(--orange);border-color:var(--orange)}
    .site-header{height:76px;background:rgba(255,254,250,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;backdrop-filter:blur(10px)}
    .nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .brand{display:flex;align-items:center;gap:10px;min-width:max-content}
    .brand-mark{width:37px;height:37px;border-radius:11px;background:var(--ink);color:#fff;display:grid;place-items:center;font-weight:800;font-size:20px;position:relative;overflow:hidden}
    .brand-mark:after{content:"";position:absolute;width:24px;height:24px;border:1px solid rgba(255,255,255,.28);border-radius:9px;transform:rotate(35deg)}
    .brand strong{font-size:17px;line-height:1.1;display:block}
    .brand small{display:block;color:var(--muted);font-size:10px;margin-top:2px}
    .nav{display:flex;align-items:center;gap:26px;margin-left:auto}
    .nav a{height:76px;display:flex;align-items:center;font-size:14px;font-weight:800;color:#4a5651;position:relative}
    .nav a:after{content:"";position:absolute;left:50%;bottom:18px;width:0;height:2px;background:var(--orange);transition:.2s}
    .nav a:hover,.nav a.active{color:var(--ink)}
    .nav a:hover:after,.nav a.active:after{width:18px;left:calc(50% - 9px)}
    .menu-toggle{display:none;border:0;background:none;color:var(--ink);padding:9px;font-size:24px;line-height:1}
    .header-download{margin-left:8px}
    .page-intro{padding:56px 0 48px;border-bottom:1px solid var(--line);background:linear-gradient(120deg,#f7f5f0 0%,#eef2ed 100%)}
    .breadcrumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:24px}
    .breadcrumb span{color:#9ca59f}
    .intro-grid{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:52px;align-items:end}
    .intro-grid h1{margin:10px 0 14px;color:var(--ink);font-size:48px;line-height:1.18;font-weight:800;letter-spacing:-.035em}
    .intro-grid p{max-width:720px;margin:0;color:#52605a;font-size:17px}
    .update-panel{padding:21px 23px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
    .update-panel span{display:block;color:var(--muted);font-size:12px}
    .update-panel strong{display:block;color:var(--ink);font-size:18px;margin:3px 0}
    .update-panel em{font-style:normal;color:var(--orange);font-size:13px;font-weight:800}
    .process-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:0;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
    .process-step{padding:25px 24px;border-right:1px solid var(--line);position:relative}
    .process-step:last-child{border-right:0}
    .step-no{display:block;color:var(--orange);font-size:12px;font-weight:800;letter-spacing:.08em;margin-bottom:8px}
    .process-step h3{font-size:18px;color:var(--ink);margin:0 0 7px;font-weight:800}
    .process-step p{margin:0;color:var(--muted);font-size:13px;line-height:1.75}
    .login-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:24px}
    .login-index{padding:28px;background:var(--ink);color:#fff;border-radius:var(--radius)}
    .login-index h2{font-size:28px;line-height:1.35;margin:12px 0;color:#fff}
    .login-index p{font-size:14px;color:#d5e2db;margin:0 0 25px}
    .index-list{margin:0;padding:0;list-style:none;border-top:1px solid rgba(255,255,255,.18)}
    .index-list li{padding:14px 0;border-bottom:1px solid rgba(255,255,255,.18);display:flex;gap:12px;align-items:center;font-size:14px}
    .index-list i{width:25px;height:25px;display:grid;place-items:center;border-radius:8px;background:rgba(233,131,82,.2);color:#ffc4a6;font-style:normal;font-size:12px;font-weight:800}
    .login-content{display:grid;gap:14px}
    .guide-row{display:grid;grid-template-columns:55px 1fr auto;gap:18px;align-items:center;padding:20px 22px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius-sm);transition:.2s}
    .guide-row:hover{transform:translateY(-3px);border-color:#dca385;box-shadow:var(--shadow-hover)}
    .guide-icon{width:48px;height:48px;display:grid;place-items:center;border-radius:14px;background:#e8efeb;color:var(--ink);font-size:22px;font-weight:800}
    .guide-row:nth-child(2) .guide-icon{background:var(--orange-soft);color:#8a4428}
    .guide-row:nth-child(3) .guide-icon{background:#ebe9df;color:#59634c}
    .guide-row h3{font-size:17px;color:var(--ink);margin:0 0 3px;font-weight:800}
    .guide-row p{font-size:14px;color:var(--muted);margin:0;line-height:1.7}
    .guide-arrow{color:var(--orange);font-size:20px}
    .app-guide{background:#edf1ec;border-top:1px solid #d6e0d9;border-bottom:1px solid #d6e0d9}
    .app-guide-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:70px;align-items:center}
    .phone-frame{width:230px;height:416px;margin:0 auto;border:8px solid var(--ink);border-radius:34px;padding:16px 13px;background:#fffefa;box-shadow:0 20px 42px rgba(24,59,53,.18);position:relative}
    .phone-frame:before{content:"";display:block;width:66px;height:7px;margin:0 auto 14px;border-radius:99px;background:#203c37}
    .phone-top{display:flex;align-items:center;justify-content:space-between;font-size:10px;color:var(--muted);margin-bottom:15px}
    .phone-title{font-size:16px;font-weight:800;color:var(--ink);margin-bottom:13px}
    .phone-notice{background:#e6efea;border-radius:12px;padding:12px;margin-bottom:10px}
    .phone-notice b{display:block;color:var(--ink);font-size:12px}
    .phone-notice span{display:block;color:var(--muted);font-size:10px;margin-top:3px}
    .phone-card{border:1px solid #e1e6e1;border-radius:11px;padding:11px;margin-top:9px}
    .phone-card b{font-size:11px;color:var(--ink)}
    .phone-card span{display:block;color:var(--muted);font-size:10px;margin-top:3px}
    .annotation-list{display:grid;gap:12px}
    .annotation{display:grid;grid-template-columns:43px 1fr;gap:14px;padding:16px 0;border-bottom:1px solid #cfd9d2}
    .annotation:first-child{padding-top:0}
    .annotation:last-child{border-bottom:0}
    .annotation strong{width:34px;height:34px;display:grid;place-items:center;border-radius:50%;background:var(--orange);color:#3a2117;font-size:13px}
    .annotation h3{font-size:18px;color:var(--ink);margin:1px 0 3px;font-weight:800}
    .annotation p{margin:0;color:var(--muted);font-size:14px}
    .trouble-table-wrap{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--white);box-shadow:var(--shadow)}
    .trouble-table{width:100%;border-collapse:collapse}
    .trouble-table th{padding:16px 20px;text-align:left;background:var(--ink);color:#fff;font-size:14px;font-weight:800}
    .trouble-table td{padding:19px 20px;border-bottom:1px solid var(--line);vertical-align:top;font-size:14px;color:#4e5954}
    .trouble-table tr:last-child td{border-bottom:0}
    .trouble-table td:first-child{color:var(--ink);font-weight:800;width:23%}
    .trouble-table td:nth-child(2){width:30%;color:var(--muted)}
    .recommend-grid{display:grid;grid-template-columns:1.2fr .9fr .9fr;gap:16px}
    .article-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:24px;min-height:235px;display:flex;flex-direction:column;transition:.2s}
    .article-card:hover{transform:translateY(-3px);border-color:#dca385;box-shadow:var(--shadow-hover)}
    .article-card:first-child{background:#e5ece9}
    .article-card .meta{display:flex;justify-content:space-between;gap:10px;align-items:center;color:var(--muted);font-size:12px}
    .article-card h3{font-size:20px;line-height:1.45;color:var(--ink);margin:17px 0 10px;font-weight:800}
    .article-card p{font-size:14px;color:var(--muted);margin:0 0 18px;line-height:1.75}
    .article-card .text-link{margin-top:auto;align-self:flex-start;font-size:14px}
    .contact-box{background:var(--ink);border-radius:var(--radius);padding:42px;display:grid;grid-template-columns:.88fr 1.12fr;gap:50px;color:#fff}
    .contact-copy h2{font-size:31px;line-height:1.35;margin:10px 0;color:#fff;font-weight:800}
    .contact-copy p{margin:0 0 25px;color:#c9d8d0;font-size:15px}
    .contact-note{padding-top:21px;border-top:1px solid rgba(255,255,255,.17);font-size:13px;color:#b9cbc0}
    .feedback-form{display:grid;grid-template-columns:1fr 1fr;gap:13px}
    .field{display:flex;flex-direction:column;gap:6px}
    .field label{font-size:13px;color:#d8e5de;font-weight:700}
    .field.full{grid-column:1/-1}
    .field input,.field select,.field textarea{width:100%;border:1px solid rgba(221,231,225,.42);border-radius:10px;background:#fffefa;color:var(--text);padding:11px 12px;outline:none;transition:.2s}
    .field textarea{min-height:88px;resize:vertical}
    .field input:focus,.field select:focus,.field textarea:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(233,131,82,.18)}
    .form-submit{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;gap:15px;margin-top:5px}
    .form-submit small{color:#b9cbc0;font-size:12px;line-height:1.55}
    .footer{background:var(--ink);color:#d5e2db;padding:61px 0 22px;margin-top:0}
    .footer-grid{display:grid;grid-template-columns:1.45fr .8fr .8fr .85fr;gap:42px}
    .footer p{font-size:13px;line-height:1.8;color:#b9cbc0;max-width:310px}
    .footer h3{font-size:14px;color:#fff;margin:4px 0 15px;font-weight:800}
    .footer-links{display:grid;gap:8px}
    .footer-links a{font-size:13px;color:#cbd8d0;transition:.2s}
    .footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
    .download-mini{border:1px solid rgba(255,255,255,.18);border-radius:12px;padding:15px;color:#d8e5de;font-size:13px;line-height:1.8}
    .footer-bottom{margin-top:42px;padding-top:19px;border-top:1px solid rgba(255,255,255,.16);display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;color:#aebfb5;font-size:12px}
    @media (max-width:1024px){
      .nav{gap:16px}.nav a{font-size:13px}
      .intro-grid,.app-guide-grid{gap:38px}
      .contact-box{gap:28px;padding:34px}
      .footer-grid{grid-template-columns:1.3fr 1fr 1fr}
      .footer-grid>div:last-child{grid-column:2/4}
    }
    @media (max-width:768px){
      .container{width:min(calc(100% - 32px),var(--container))}
      .section{padding:56px 0}
      .site-header{height:68px}
      .nav-wrap{position:relative}
      .nav{display:none;position:absolute;top:67px;left:-16px;right:-16px;margin:0;padding:10px 16px 17px;background:var(--white);border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:0}
      .nav.open{display:flex}
      .nav a{height:45px;padding:0 8px}
      .nav a:after{bottom:5px;left:8px}
      .nav a:hover:after,.nav a.active:after{left:8px;width:18px}
      .menu-toggle{display:block;margin-left:auto}
      .header-download{display:none}
      .intro-grid,.login-layout,.app-guide-grid,.contact-box{grid-template-columns:1fr}
      .intro-grid{gap:24px}.intro-grid h1{font-size:38px}
      .update-panel{max-width:360px}
      .process-strip{grid-template-columns:1fr 1fr}
      .process-step:nth-child(2){border-right:0}
      .process-step:nth-child(-n+2){border-bottom:1px solid var(--line)}
      .section-head{display:block;margin-bottom:25px}
      .section-head p{margin-top:12px}
      .recommend-grid{grid-template-columns:1fr 1fr}
      .article-card:first-child{grid-column:1/-1}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
      .footer-grid>div:last-child{grid-column:auto}
    }
    @media (max-width:520px){
      body{font-size:15px}.section{padding:46px 0}
      .brand strong{font-size:16px}.intro-grid h1{font-size:32px}
      .page-intro{padding:39px 0 36px}
      .section-head h2{font-size:26px}
      .process-strip,.recommend-grid,.feedback-form{grid-template-columns:1fr}
      .process-step,.process-step:nth-child(2){border-right:0;border-bottom:1px solid var(--line)}
      .process-step:last-child{border-bottom:0}
      .guide-row{grid-template-columns:46px 1fr;gap:13px;padding:17px}
      .guide-arrow{display:none}
      .phone-frame{transform:scale(.92);margin:-16px auto}
      .trouble-table-wrap{border:0;background:transparent;box-shadow:none;overflow:visible}
      .trouble-table,.trouble-table tbody,.trouble-table tr,.trouble-table td{display:block;width:100%}
      .trouble-table thead{display:none}
      .trouble-table tr{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px 16px;margin-bottom:12px;box-shadow:var(--shadow)}
      .trouble-table td{padding:3px 0;border:0;width:auto!important}
      .trouble-table td:before{display:block;color:var(--muted);font-size:12px;font-weight:700;margin-bottom:1px}
      .trouble-table td:nth-child(1):before{content:"问题表现"}
      .trouble-table td:nth-child(2):before{content:"常见原因"}
      .trouble-table td:nth-child(3):before{content:"建议处理"}
      .article-card:first-child{grid-column:auto}
      .contact-box{padding:28px 21px}.contact-copy h2{font-size:27px}
      .form-submit{align-items:flex-start;flex-direction:column}
      .form-submit .btn{width:100%}
      .footer-grid{grid-template-columns:1fr}
      .footer-bottom{display:block;line-height:2}
    }
    @media (prefers-reduced-motion:reduce){
      html{scroll-behavior:auto}
      *,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
    }