/* roulang page: index */
:root{
  --primary:#2B6DE8;--primary-dark:#1B4FC4;--primary-light:#EBF1FD;
  --accent:#F97316;--accent-dark:#EA6A0C;
  --bg:#F4F8FC;--card-bg:#FFFFFF;--footer-bg:#132033;
  --text:#132033;--text-secondary:#4A5B72;--text-muted:#8A97A8;
  --border:rgba(19,32,51,.08);--border-light:rgba(19,32,51,.04);
  --radius-sm:10px;--radius-card:14px;--radius-lg:20px;--radius-full:999px;
  --shadow-sm:0 4px 12px rgba(19,32,51,.06);
  --shadow-md:0 12px 28px rgba(19,32,51,.08);
  --shadow-lg:0 20px 40px rgba(19,32,51,.12);
  --font-cn:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:Inter,"DIN Alternate","Helvetica Neue",Arial,sans-serif;
  --transition:.25s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;word-break:break-word}
html{scroll-behavior:smooth;scroll-padding-top:100px}
body{font-family:var(--font-cn);font-size:16px;line-height:1.7;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--primary)}
button,input,select,textarea{font-family:inherit;font-size:16px;outline:none}
input,select,textarea{border:1px solid rgba(19,32,51,.12);border-radius:var(--radius-sm);padding:12px 16px;background:#fff;transition:border-color var(--transition),box-shadow var(--transition)}
input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(43,109,232,.15)}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
h1,h2,h3,h4,h5,h6{font-family:var(--font-cn);line-height:1.3;font-weight:700;color:var(--text)}
p{color:var(--text-secondary)}
.grid-container{max-width:1200px}
.section{padding:96px 0;position:relative}
.section-white{background:#fff}
.section-blue{background:var(--bg)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:48px;gap:20px;flex-wrap:wrap}
.section-head .eyebrow{display:block;font-size:13px;font-weight:600;letter-spacing:.04em;color:var(--primary);text-transform:none;margin-bottom:8px}
.section-head h2{font-size:28px;line-height:1.3}
.section-head .more-link{font-size:14px;color:var(--text-secondary);white-space:nowrap}
.section-head .more-link:hover{color:var(--primary)}
.more-link i{font-size:11px;margin-left:4px}
.btn{display:inline-flex;align-items:center;justify-content:center;font-family:var(--font-cn);font-size:15px;font-weight:600;line-height:1;padding:12px 24px;border-radius:var(--radius-sm);border:none;cursor:pointer;transition:all var(--transition);gap:8px;text-decoration:none}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0) scale(.98)}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);color:#fff}
.btn-outline{background:#fff;border:1px solid var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary-light);color:var(--primary);border-color:var(--primary)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:scale(1.02)}
.btn-light{background:#fff;color:var(--primary)}
.btn-light:hover{background:var(--primary-light);color:var(--primary)}
.btn-ghost{background:rgba(255,255,255,.18);color:#fff;border:1px solid rgba(255,255,255,.4)}
.btn-ghost:hover{background:rgba(255,255,255,.3);color:#fff}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-lg{padding:16px 32px;font-size:16px}
.btn-block{width:100%}
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.7);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);transition:background .3s,box-shadow .3s}
.site-header.scrolled{background:#fff;box-shadow:0 4px 20px rgba(19,32,51,.06)}
.header-inner{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;height:76px;gap:16px}
.nav-left,.nav-right{display:flex;align-items:center;gap:24px}
.nav-right{justify-content:flex-end}
.logo{display:flex;align-items:center;gap:10px}
.logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:14px;transform:rotate(45deg)}
.logo-icon i{transform:rotate(-45deg)}
.logo-text{font-size:20px;font-weight:700;color:var(--text);letter-spacing:.01em}
.logo:hover{color:var(--text)}
.nav-link{font-size:14px;font-weight:500;color:var(--text-secondary);position:relative;padding:6px 2px;transition:color var(--transition)}
.nav-link:hover{color:var(--primary)}
.nav-link.active{color:var(--primary)}
.nav-link.active::after{content:'';position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--primary);border-radius:2px}
.hamburger{display:none;width:42px;height:42px;border:none;background:var(--text);border-radius:8px;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;padding:0}
.hamburger span{width:18px;height:2px;background:#fff;border-radius:2px;transition:transform .3s,opacity .3s}
.hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-menu{display:none;background:#fff;border-top:1px solid var(--border);box-shadow:var(--shadow-md);padding:16px 24px 24px}
.mobile-menu.open{display:block}
.mobile-link{display:block;padding:12px 4px;font-size:15px;font-weight:500;color:var(--text);border-bottom:1px solid var(--border-light)}
.mobile-link:last-of-type{border-bottom:none}
.mobile-link.active{color:var(--primary)}
.mobile-menu .btn{margin-top:16px}
.header-mobile-cta{display:none;font-size:13px;font-weight:600;color:var(--primary);padding:8px 14px;border:1px solid var(--primary);border-radius:var(--radius-full)}
/* ===== Hero ===== */
.hero-section{background:var(--bg);padding:170px 0 100px;overflow:hidden}
.hero-layout{display:grid;grid-template-columns:280px minmax(0,1fr) 280px;gap:40px;align-items:center}
.hero-left{display:flex;flex-direction:column;gap:24px}
.hero-right{display:flex;flex-direction:column;gap:20px}
.data-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-sm);transition:box-shadow var(--transition)}
.data-card:hover{box-shadow:var(--shadow-md)}
.data-num{display:block;font-family:var(--font-num);font-size:30px;font-weight:700;color:var(--accent);line-height:1.2}
.data-label{font-size:13px;color:var(--text-muted);margin-top:4px;display:block}
.video-mini-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm);transition:all var(--transition)}
.video-mini-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px)}
.video-mini-card+.video-mini-card{margin-top:16px}
.video-mini-card.offset{margin-top:32px}
.video-mini-thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.video-mini-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-mini-card:hover .video-mini-thumb img{transform:scale(1.04)}
.video-mini-thumb .duration{position:absolute;right:8px;bottom:8px;background:rgba(19,32,51,.85);color:#fff;font-size:11px;font-family:var(--font-num);padding:3px 8px;border-radius:var(--radius-full)}
.video-mini-info{padding:12px 14px}
.video-mini-info h4{font-size:14px;font-weight:600;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.hero-stage{display:flex;justify-content:center}
.phone-frame{width:340px;height:650px;background:#fff;border-radius:26px;overflow:hidden;position:relative;box-shadow:var(--shadow-lg);flex-shrink:0}
.phone-status{height:30px;background:rgba(255,255,255,.9);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:space-between;padding:0 16px;font-size:10px;font-family:var(--font-num);color:var(--text);position:absolute;top:0;left:0;right:0;z-index:20}
.phone-status .dots{display:flex;gap:3px}
.phone-status .dots i{width:4px;height:4px;border-radius:50%;background:#5ec488;display:inline-block}
.phone-bg{position:absolute;inset:0;z-index:1}
.phone-bg img{width:100%;height:100%;object-fit:cover}
.phone-frame::before{content:'';position:absolute;top:0;left:0;right:0;height:25%;background:linear-gradient(180deg,rgba(255,255,255,.8),transparent);z-index:3;pointer-events:none}
.phone-frame::after{content:'';position:absolute;bottom:0;left:0;right:0;height:48%;background:linear-gradient(0deg,rgba(19,32,51,.82),transparent);z-index:3;pointer-events:none}
.stage-content{position:absolute;z-index:5;left:0;right:0;padding:24px;display:flex;flex-direction:column;align-items:center;text-align:center;top:36px}
.stage-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.2);backdrop-filter:blur(6px);border:1px solid rgba(255,255,255,.45);color:#fff;font-size:12px;font-weight:600;padding:6px 14px;border-radius:var(--radius-full);margin-bottom:16px}
.stage-badge i{color:var(--accent)}
.stage-content h1{color:#fff;font-size:26px;font-weight:700;line-height:1.35;margin-bottom:8px;text-shadow:0 2px 20px rgba(0,0,0,.25)}
.stage-content .stage-sub{color:rgba(255,255,255,.9);font-size:13px;line-height:1.6;margin-bottom:18px}
.stage-actions{display:flex;gap:10px;width:100%;margin-top:auto;margin-bottom:14px}
.stage-actions .btn{flex:1;font-size:13px;padding:11px 10px}
.stage-actions .btn-ghost{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.45);color:#fff;font-weight:500}
.stage-actions .btn-ghost i{font-size:11px}
.scroll-down{position:absolute;bottom:12px;left:50%;transform:translateX(-50%);color:rgba(255,255,255,.8);font-size:14px;z-index:6;animation:bounceDown 2s infinite}
@keyframes bounceDown{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(6px)}}
/* ===== 热门看点 ===== */
.video-section{background:#fff}
.video-scroll{display:flex;gap:20px;overflow-x:auto;padding-bottom:12px;scroll-snap-type:x mandatory}
.video-scroll::-webkit-scrollbar{height:4px}
.video-scroll::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}
.video-card{min-width:260px;scroll-snap-align:start}
.video-card.feature{min-width:calc(50% - 10px);flex-shrink:0}
.video-card{flex-shrink:0;flex-basis:calc(33.333% - 14px)}
.video-card.feature{flex-basis:calc(50% - 10px)}
.video-card-inner{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm);transition:all var(--transition);height:100%}
.video-card-inner:hover{box-shadow:var(--shadow-md);transform:translateY(-3px)}
.video-cover{position:relative;aspect-ratio:16/9;overflow:hidden}
.video-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-card-inner:hover .video-cover img{transform:scale(1.03)}
.duration{position:absolute;left:10px;bottom:10px;background:rgba(19,32,51,.88);color:#fff;font-size:12px;font-family:var(--font-num);padding:3px 10px;border-radius:var(--radius-full);letter-spacing:.02em}
.hot-badge{position:absolute;top:10px;right:10px;background:var(--accent);color:#fff;font-size:11px;font-weight:600;padding:4px 10px;border-radius:var(--radius-full);display:flex;align-items:center;gap:4px}
.play-hover{position:absolute;inset:0;background:rgba(19,32,51,.2);display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s}
.video-card-inner:hover .play-hover{opacity:1}
.play-hover i{width:44px;height:44px;background:rgba(255,255,255,.92);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:15px;transform:scale(.6);transition:transform .3s}
.video-card-inner:hover .play-hover i{transform:scale(1)}
.video-info{padding:18px 20px}
.video-info h3{font-size:16px;font-weight:600;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:10px}
.video-card.feature .video-info h3{font-size:18px}
.video-meta{display:flex;align-items:center;gap:16px;font-size:13px;color:var(--text-muted)}
.video-meta span{display:flex;align-items:center;gap:5px}
.video-meta i{font-size:12px;color:var(--text-muted)}
/* ===== 种草清单 ===== */
.list-section{background:var(--bg)}
.feature-list{display:flex;flex-direction:column}
.feature-item{display:flex;align-items:center;gap:22px;padding:24px 8px;border-bottom:1px dashed var(--border);position:relative;transition:all var(--transition);cursor:default}
.feature-item:last-child{border-bottom:none}
.feature-item:hover{background:rgba(255,255,255,.55);padding-left:16px}
.feature-num{font-family:var(--font-num);font-size:34px;font-weight:700;color:var(--primary);opacity:.45;min-width:48px;transition:color var(--transition)}
.feature-item:hover .feature-num{color:var(--accent);opacity:1}
.feature-content{flex:1}
.feature-content h3{font-size:18px;font-weight:600;margin-bottom:4px}
.feature-content p{font-size:14px;color:var(--text-muted);line-height:1.5}
.feature-arrow{color:var(--text-muted);font-size:16px;opacity:0;transform:translateX(-6px);transition:all .3s}
.feature-item:hover .feature-arrow{opacity:1;transform:translateX(0);color:var(--primary)}
.highlight-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);position:relative}
.highlight-card .cover-wrap{position:relative;aspect-ratio:4/3}
.highlight-card .cover-wrap img{width:100%;height:100%;object-fit:cover}
.featured-badge{position:absolute;top:14px;right:14px;background:var(--accent);color:#fff;font-size:12px;font-weight:600;padding:4px 14px;border-radius:var(--radius-full);z-index:2;box-shadow:0 4px 12px rgba(249,115,22,.35)}
.highlight-body{padding:28px}
.highlight-body h3{font-size:20px;font-weight:700;margin-bottom:10px}
.highlight-body p{font-size:14px;color:var(--text-secondary);line-height:1.6;margin-bottom:18px}
/* ===== 口碑 ===== */
.review-section{background:#fff;overflow:hidden}
.review-head-band{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap}
.review-rate{font-family:var(--font-num);font-size:34px;font-weight:800;color:var(--accent);line-height:1}
.review-scroll{display:flex;gap:16px;overflow-x:auto;padding:8px 4px 16px;scroll-snap-type:x mandatory}
.review-scroll::-webkit-scrollbar{height:4px}
.review-scroll::-webkit-scrollbar-thumb{background:rgba(19,32,51,.12);border-radius:4px}
.review-card{min-width:320px;background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-sm);scroll-snap-align:start;position:relative;transition:box-shadow var(--transition)}
.review-card:hover{box-shadow:var(--shadow-md)}
.review-card.first{border-left:4px solid var(--primary)}
.review-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.review-stars{color:#F5A623;font-size:13px;letter-spacing:2px}
.review-source{font-size:12px;background:var(--bg);color:var(--text-secondary);padding:3px 10px;border-radius:var(--radius-full)}
.review-text{font-size:14px;color:var(--text-secondary);line-height:1.6;margin-bottom:16px}
.review-footer{display:flex;align-items:center;gap:10px}
.review-avatar{width:36px;height:36px;border-radius:50%;background:var(--primary-light);display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:13px;font-weight:600}
.review-name{font-size:13px;font-weight:600;color:var(--text)}
.review-time{font-size:12px;color:var(--text-muted)}
.review-arrows{display:flex;justify-content:flex-end;gap:10px;margin-top:20px}
.arrow-btn{width:42px;height:42px;border-radius:50%;border:1px solid var(--border);background:#fff;color:var(--text-secondary);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition);font-size:14px}
.arrow-btn:hover{background:var(--primary);border-color:var(--primary);color:#fff}
/* ===== 资讯 ===== */
.news-section{background:var(--bg)}
.news-col{margin-bottom:28px}
.news-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm);transition:all var(--transition);height:100%;display:flex;flex-direction:column}
.news-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px)}
.news-thumb{aspect-ratio:16/9;overflow:hidden;display:block}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1}
.news-cat{align-self:flex-start;font-size:12px;font-weight:600;color:var(--primary);background:var(--primary-light);padding:3px 12px;border-radius:4px;margin-bottom:10px}
.news-body h3{font-size:16px;font-weight:600;line-height:1.45;margin-bottom:8px}
.news-body h3 a{color:var(--text)}
.news-body h3 a:hover{color:var(--primary)}
.news-body p{font-size:14px;color:var(--text-muted);line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:14px;flex:1}
.news-meta{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-muted);border-top:1px solid var(--border-light);padding-top:12px}
.read-more{color:var(--primary);font-weight:500;font-size:13px}
.read-more:hover{color:var(--primary-dark)}
.empty-state{dashed:1px dashed rgba(19,32,51,.18);border-radius:var(--radius-card);padding:70px 20px;text-align:center;background:rgba(255,255,255,.6);width:100%}
.empty-state i{font-size:36px;color:var(--text-muted);opacity:.4;margin-bottom:12px;display:block}
.empty-state p{font-size:14px;color:var(--text-muted)}
/* ===== FAQ ===== */
.faq-section{background:#fff}
.faq-list{max-width:860px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);margin-bottom:12px;overflow:hidden;transition:box-shadow var(--transition);box-shadow:var(--shadow-sm)}
.faq-item.active{box-shadow:var(--shadow-md);border-color:rgba(43,109,232,.25)}
.faq-question{display:flex;align-items:center;justify-content:space-between;width:100%;background:none;border:none;padding:20px 22px;font-size:16px;font-weight:600;color:var(--text);cursor:pointer;text-align:left}
.faq-question:hover{color:var(--primary)}
.faq-icon{width:28px;height:28px;border-radius:50%;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:16px;color:var(--text-secondary);transition:all .3s;flex-shrink:0}
.faq-item.active .faq-icon{background:var(--primary);border-color:var(--primary);color:#fff;transform:rotate(45deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-answer-inner{padding:0 22px 20px;border-top:1px solid var(--border-light)}
.faq-answer p{font-size:15px;color:var(--text-secondary);line-height:1.65;padding-top:14px}
/* ===== CTA ===== */
.cta-section{background:var(--bg)}
.cta-panel{background:linear-gradient(135deg,#E8F0FE 0%,#F7FAFF 50%,#FFFFFF 100%);border-radius:var(--radius-lg);padding:52px 48px;position:relative;overflow:hidden;border:1px solid rgba(43,109,232,.08)}
.cta-panel::before{content:'';position:absolute;top:-60px;right:-40px;width:180px;height:180px;border-radius:50%;border:2px solid rgba(43,109,232,.1);pointer-events:none}
.cta-panel::after{content:'';position:absolute;bottom:-40px;left:20%;width:140px;height:140px;border-radius:50%;border:2px solid rgba(249,115,22,.12);pointer-events:none}
.cta-inner{display:grid;grid-template-columns:1fr 420px;gap:48px;align-items:center;position:relative;z-index:2}
.cta-text .eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.04em;color:var(--primary);background:rgba(43,109,232,.08);padding:4px 14px;border-radius:var(--radius-full);margin-bottom:16px}
.cta-text h2{font-size:30px;font-weight:700;margin-bottom:12px;color:var(--text)}
.cta-text p{font-size:15px;color:var(--text-secondary);line-height:1.6;margin-bottom:20px}
.cta-contacts{display:flex;flex-direction:column;gap:8px;margin-top:16px}
.cta-contacts span{font-size:14px;color:var(--text-secondary);display:flex;align-items:center;gap:8px}
.cta-contacts i{color:var(--primary);font-size:15px}
.cta-form-wrap{background:#fff;border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-md);border:1px solid var(--border)}
.cta-form-wrap label{display:block;font-size:14px;font-weight:500;color:var(--text);margin-bottom:6px}
.cta-form-wrap input{margin-bottom:16px;width:100%}
.tag-group{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.tag-option{cursor:pointer;position:relative}
.tag-option input{position:absolute;opacity:0;width:0;height:0}
.tag-option span{display:inline-block;font-size:13px;font-weight:500;color:var(--text-secondary);border:1px solid rgba(19,32,51,.12);border-radius:var(--radius-full);padding:7px 16px;transition:all var(--transition);background:#fff}
.tag-option input:checked+span{background:var(--primary);border-color:var(--primary);color:#fff}
.tag-option:hover span{border-color:var(--primary);color:var(--primary)}
/* ===== 页脚 ===== */
.site-footer{background:var(--footer-bg);padding:70px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:48px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand .footer-logo{display:flex;align-items:center;gap:10px;color:#fff;font-size:20px;font-weight:700;margin-bottom:16px}
.footer-brand .footer-logo .logo-icon{background:rgba(255,255,255,.12);color:#fff;backdrop-filter:blur(4px)}
.footer-brand p{font-size:14px;color:var(--footer-bg);color:#B6C2D4;line-height:1.65}
.footer-links h4,.footer-contact h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px}
.footer-links a{display:block;color:#B6C2D4;font-size:14px;padding:5px 0;transition:all .3s}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-contact p{color:#B6C2D4;font-size:14px;margin-bottom:10px;display:flex;align-items:center;gap:10px}
.footer-contact p i{color:rgba(255,255,255,.4);font-size:14px;width:18px}
.footer-qr{width:80px;height:80px;background:#fff;border-radius:8px;margin-top:16px;overflow:hidden;padding:4px}
.footer-qr img{width:100%;height:100%;object-fit:cover}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;padding:24px 0;font-size:13px;color:#8A97A8}
.footer-bottom .links{display:flex;gap:20px}
.footer-bottom a{color:#8A97A8}
.footer-bottom a:hover{color:#fff}
/* ===== 移动端悬浮CTA ===== */
.mobile-cta{position:fixed;bottom:0;left:0;right:0;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);padding:12px 20px;display:none;align-items:center;justify-content:space-between;z-index:900;box-shadow:0 -4px 20px rgba(19,32,51,.08)}
.mobile-cta span{font-size:13px;font-weight:600;color:var(--text)}
.mobile-cta .btn{padding:10px 18px;font-size:13px}
/* ===== 响应式 ===== */
@media (max-width:1024px){
  .desktop-only{display:none !important}
  .hamburger{display:flex}
  .header-mobile-cta{display:inline-flex}
  .header-inner{grid-template-columns:1fr auto 1fr}
  .hero-layout{grid-template-columns:1fr;gap:40px}
  .hero-left,.hero-right{display:none}
  .phone-frame{width:min(340px,86vw);height:min(620px,78vh)}
  .mobile-menu{position:fixed;top:76px;left:0;right:0;z-index:999}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-inner{grid-template-columns:1fr}
  .cta-form-wrap{max-width:480px}
  .video-card{flex-basis:calc(50% - 10px);min-width:240px}
  .video-card.feature{flex-basis:calc(65% - 10px)}
}
@media (max-width:640px){
  .section{padding:60px 0}
  .section-head{margin-bottom:32px}
  .section-head h2{font-size:22px}
  .hero-section{padding:130px 0 60px}
  .phone-frame{width:88vw;max-width:340px;height:70vh;min-height:480px}
  .stage-content h1{font-size:23px}
  .stage-content .stage-sub{font-size:12px}
  .video-card{flex-basis:280px}
  .video-card.feature{flex-basis:320px}
  .feature-item{gap:14px;padding:18px 6px}
  .feature-num{font-size:26px;min-width:36px}
  .feature-content h3{font-size:16px}
  .highlight-body{padding:20px}
  .review-card{min-width:260px;padding:18px}
  .cta-panel{padding:32px 20px}
  .cta-text h2{font-size:24px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .mobile-cta{display:flex}
  .mobile-cta .btn{margin-right:0}
  .faq-question{font-size:15px;padding:16px 16px}
  .faq-answer-inner{padding:0 16px 16px}
}
@media (max-width:768px){
  .mobile-cta{display:flex}
}
@media (min-width:769px){
  .mobile-cta{display:none !important}
}
@media (max-width:520px){
  .section-head .more-link{display:none}
  .news-body h3{font-size:15px}
  .stage-actions .btn{font-size:12px;padding:10px 8px}
}

/* roulang page: category1 */
:root{
  --primary:#2B6DE8;
  --primary-dark:#1B4FC4;
  --accent:#F97316;
  --accent-dark:#EA6A0C;
  --page-bg:#F4F8FC;
  --card-bg:#FFFFFF;
  --text-main:#132033;
  --text-sub:#4A5B72;
  --text-aux:#8A97A8;
  --border-color:rgba(19,32,51,.08);
  --radius-btn:10px;
  --radius-card:14px;
  --radius-lg:20px;
  --shadow-card:0 4px 12px rgba(19,32,51,.06);
  --shadow-hover:0 12px 28px rgba(19,32,51,.08);
  --shadow-float:0 20px 40px rgba(19,32,51,.12);
  --container-w:1200px;
  --transition:all .25s ease;
  --font-cn:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:"Inter","DIN Alternate","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.7;
  background:var(--page-bg);
  color:var(--text-main);
  -webkit-font-smoothing:antialiased;
  word-break:break-word;
}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:var(--text-main);transition:var(--transition)}
button,input,select,textarea{font-family:inherit;font-size:inherit;border:none;outline:none}
ul,ol{list-style:none}
.container{max-width:var(--container-w);margin:0 auto;padding:0 24px}
@media screen and (max-width:640px){.container{padding:0 16px}}

/* ===== 导航 ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:transparent;transition:var(--transition);
}
.site-header.is-scrolled{
  background:#fff;
  box-shadow:0 2px 12px rgba(19,32,51,.08);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;position:relative;
}
.logo{
  display:flex;align-items:center;gap:8px;
  position:absolute;left:50%;transform:translateX(-50%);
  font-size:22px;font-weight:700;color:var(--text-main);
  letter-spacing:.02em;white-space:nowrap;
}
.logo-icon{
  display:flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:10px;
  background:var(--primary);color:#fff;font-size:16px;
  transform:rotate(-45deg);box-shadow:0 4px 10px rgba(43,109,232,.3);
}
.logo-icon i{transform:rotate(45deg)}
.logo-text{font-size:22px;font-weight:700}
.nav-left,.nav-right{display:flex;align-items:center;gap:24px}
.nav-link{
  font-size:14px;font-weight:500;color:var(--text-main);
  padding:6px 2px;position:relative;
}
.nav-link::after{
  content:"";display:block;height:2px;width:0;
  background:var(--primary);border-radius:2px;
  transition:width .25s ease;position:absolute;bottom:-2px;left:0;
}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after{width:100%}
.nav-link.active{color:var(--primary);font-weight:600}
.nav-link.active::after{width:100%}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:600;border-radius:var(--radius-btn);
  padding:12px 24px;cursor:pointer;transition:var(--transition);
  text-align:center;line-height:1.2;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 20px rgba(43,109,232,.25)}
.btn-primary:active{transform:translateY(0) scale(.98)}
.btn-primary.btn-sm{padding:8px 18px;font-size:13px}
.btn-outline{background:#fff;border:1px solid var(--primary);color:var(--primary)}
.btn-outline:hover{background:#EBF1FD;}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark);transform:scale(1.02);box-shadow:0 8px 24px rgba(249,115,22,.3)}
.btn-accent:active{transform:scale(.98)}
.btn-block{width:100%}
.btn:focus-visible, a:focus-visible, button:focus-visible{
  outline:2px solid var(--primary);outline-offset:2px;
}
.hamburger{display:none;background:none;border:none;cursor:pointer;padding:8px;flex-direction:column;gap:5px}
.hamburger span{display:block;width:24px;height:2px;background:var(--text-main);border-radius:2px}
.header-mobile-cta{display:none;font-size:13px;font-weight:600;color:var(--primary);background:#EBF1FD;padding:6px 14px;border-radius:999px}
@media screen and (max-width:1024px){
  .desktop-only{display:none}
  .hamburger{display:inline-flex}
  .header-mobile-cta{display:inline-block}
  .logo{position:relative;left:auto;transform:none}
  .header-inner{justify-content:flex-start;gap:16px}
  .logo{margin:0 auto}
  .site-header.is-scrolled{background:#fff;box-shadow:0 2px 12px rgba(19,32,51,.08)}
}
.mobile-menu{
  display:none;background:#fff;padding:16px 24px 24px;
  border-top:1px solid var(--border-color);
  box-shadow:var(--shadow-float);
}
.mobile-menu.is-open{display:block}
.mobile-link{
  display:block;padding:14px 0;font-size:15px;font-weight:500;
  border-bottom:1px solid rgba(19,32,51,.05);
}
.mobile-link.active{color:var(--primary)}
.mobile-link:hover{color:var(--primary)}
.mobile-menu .btn{margin-top:14px}

/* ===== 面包屑 ===== */
.breadcrumb{
  padding:90px 0 0;font-size:14px;color:var(--text-aux);
}
.breadcrumb a{color:var(--text-aux)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{margin:0 8px;color:var(--text-aux)}
.breadcrumb .current{color:var(--text-sub)}

/* ===== 分类 Hero ===== */
.cat-hero{
  background:linear-gradient(135deg,#EBF1FD 0%,#F8FBFF 60%,#FFFFFF 100%);
  padding:48px 0 64px;position:relative;overflow:hidden;
}
.cat-hero .bar{
  width:6px;border-radius:99px;background:var(--accent);
  align-self:stretch;flex-shrink:0;
}
.cat-hero-inner{
  display:flex;align-items:center;gap:32px;
  padding:24px 0;
}
.cat-hero-text{flex:1.1}
.cat-hero-text h1{
  font-size:32px;font-weight:700;line-height:1.25;color:var(--text-main);
  margin-bottom:12px;letter-spacing:.02em;
}
.cat-hero-text p{
  font-size:16px;color:var(--text-sub);line-height:1.7;max-width:520px;
}
.cat-hero-media{flex:1;max-width:420px}
.cat-hero-media img{
  width:100%;border-radius:var(--radius-lg);
  box-shadow:var(--shadow-hover);aspect-ratio:4/3;object-fit:cover;
}
.cat-hero-tags{display:flex;gap:8px;margin-top:20px;flex-wrap:wrap}
.cat-hero-tags .tag{
  font-size:13px;color:var(--primary);background:#EBF1FD;
  padding:4px 14px;border-radius:999px;font-weight:500;
}
@media screen and (max-width:640px){
  .cat-hero{padding:32px 0 40px}
  .cat-hero-inner{flex-direction:column;gap:20px}
  .cat-hero-text h1{font-size:26px}
  .cat-hero-media{max-width:100%}
}

/* ===== 板块通用 ===== */
.section{padding:80px 0}
.section-tight{padding:64px 0}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;color:var(--accent);
  letter-spacing:.04em;text-transform:uppercase;margin-bottom:10px;
}
.sec-title{font-size:28px;font-weight:700;color:var(--text-main);line-height:1.3;margin-bottom:12px}
.sec-desc{font-size:15px;color:var(--text-sub);line-height:1.7;max-width:640px;margin-bottom:32px}
@media screen and (max-width:640px){.section{padding:56px 0}.sec-title{font-size:22px}}

/* ===== 分类介绍 ===== */
.intro-grid{display:flex;gap:40px;align-items:flex-start}
.intro-left{flex:7}
.intro-left p.body-text{font-size:16px;line-height:1.75;color:var(--text-sub);margin-bottom:18px}
.intro-left h3{font-size:18px;font-weight:600;margin:20px 0 10px;color:var(--text-main)}
.intro-left .check-list li{
  display:flex;align-items:flex-start;gap:10px;
  padding:10px 0;font-size:15px;color:var(--text-sub);border-bottom:1px solid rgba(19,32,51,.04);
}
.intro-left .check-list li i{color:var(--primary);font-size:14px;margin-top:4px}
.intro-right{flex:5}
.intro-card{
  background:#132033;border-radius:var(--radius-lg);padding:32px 28px;color:#fff;
  position:relative;overflow:hidden;
}
.intro-card::after{
  content:"";position:absolute;right:-30px;top:-30px;width:120px;height:120px;
  border-radius:50%;border:2px solid rgba(255,255,255,.08);pointer-events:none;
}
.intro-card::before{
  content:"";position:absolute;right:20px;bottom:-40px;width:80px;height:80px;
  border-radius:50%;border:2px solid rgba(255,255,255,.05);pointer-events:none;
}
.intro-card .stat-item{padding:18px 0;border-bottom:1px solid rgba(255,255,255,.08)}
.intro-card .stat-item:last-child{border-bottom:none}
.intro-card .stat-num{
  font-family:var(--font-num);font-size:36px;font-weight:700;color:var(--accent);
  line-height:1.2;
}
.intro-card .stat-label{font-size:14px;color:rgba(255,255,255,.6);margin-top:4px}
.intro-card .stat-item:first-child{padding-top:0}
@media screen and (max-width:900px){.intro-grid{flex-direction:column}.intro-card{margin-top:20px}}

/* ===== 数据条 ===== */
.status-bar{
  background:#fff;border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);padding:36px 32px;
  display:flex;align-items:center;justify-content:space-around;flex-wrap:wrap;gap:24px;
  position:relative;overflow:hidden;
}
.status-bar::before{
  content:"";position:absolute;top:0;left:0;height:4px;width:100%;
  background:linear-gradient(90deg,var(--primary) 0%,var(--accent) 100%);
}
.status-item{text-align:center;flex:1;min-width:140px}
.status-item .num{
  font-family:var(--font-num);font-size:40px;font-weight:700;color:var(--primary);
  line-height:1.1;
}
.status-item .lbl{font-size:14px;color:var(--text-aux);margin-top:6px}
.status-item .dot{
  display:inline-block;width:6px;height:6px;border-radius:50%;
  background:var(--accent);margin-right:6px;vertical-align:middle;
}
@media screen and (max-width:640px){.status-bar{padding:24px 16px}.status-item .num{font-size:30px}}

/* ===== 服务流程 ===== */
.process-panel{
  background:var(--card-bg);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);padding:48px 40px;position:relative;
  border:1px solid rgba(19,32,51,.06);
}
.process-steps{display:flex;gap:0;position:relative;margin-top:28px}
.process-steps::before{
  content:"";position:absolute;top:36px;left:10%;right:10%;
  height:2px;background:linear-gradient(90deg,rgba(43,109,232,.3),var(--primary));
}
.step-item{flex:1;text-align:center;position:relative;padding:0 12px}
.step-num{
  width:72px;height:72px;border-radius:50%;
  background:#EBF1FD;display:flex;align-items:center;justify-content:center;
  margin:0 auto 16px;font-family:var(--font-num);font-size:22px;font-weight:700;color:var(--primary);
  border:2px solid var(--primary);position:relative;z-index:1;
  transition:var(--transition);
}
.step-item:hover .step-num{
  background:var(--primary);color:#fff;transform:scale(1.05);
  box-shadow:0 8px 24px rgba(43,109,232,.3);
}
.step-item h4{font-size:16px;font-weight:600;margin-bottom:6px;color:var(--text-main)}
.step-item p{font-size:13px;color:var(--text-aux);line-height:1.5}
@media screen and (max-width:900px){
  .process-panel{padding:32px 24px}
  .process-steps{flex-direction:column;gap:24px;align-items:center}
  .process-steps::before{display:none}
  .step-item{max-width:280px}
}

/* ===== 服务范畴卡片 ===== */
.service-cards{display:flex;flex-wrap:wrap;gap:24px;margin-top:8px}
.service-card{
  flex:0 0 calc(25% - 18px);background:var(--card-bg);
  border-radius:var(--radius-card);border:1px solid rgba(19,32,51,.06);
  overflow:hidden;box-shadow:var(--shadow-card);transition:var(--transition);
}
.service-card:hover{
  transform:translateY(-3px);box-shadow:var(--shadow-hover);
}
.service-card .cover{position:relative;aspect-ratio:16/10;overflow:hidden}
.service-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.service-card:hover .cover img{transform:scale(1.04)}
.service-card .cover .badge{
  position:absolute;top:12px;left:12px;background:var(--accent);color:#fff;
  font-size:12px;font-weight:600;padding:3px 10px;border-radius:999px;
}
.service-card .body{padding:20px 18px 22px}
.service-card .body h3{font-size:17px;font-weight:600;margin-bottom:8px;line-height:1.4}
.service-card .body p{font-size:14px;color:var(--text-sub);line-height:1.65}
.service-card .body .more{
  display:inline-block;margin-top:14px;font-size:13px;color:var(--primary);font-weight:600;
}
.service-card .body .more i{margin-left:4px;transition:transform .25s}
.service-card .body .more:hover i{transform:translateX(4px)}
@media screen and (max-width:1024px){
  .service-card{flex:0 0 calc(50% - 12px)}
}
@media screen and (max-width:640px){
  .service-card{flex:0 0 100%}
}

/* ===== FAQ ===== */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{
  background:var(--card-bg);border-radius:var(--radius-card);
  border:1px solid rgba(19,32,51,.06);box-shadow:var(--shadow-card);
  margin-bottom:12px;overflow:hidden;transition:var(--transition);
}
.faq-item:hover{box-shadow:var(--shadow-hover)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;
  padding:20px 24px;cursor:pointer;font-size:16px;font-weight:600;
  color:var(--text-main);background:none;text-align:left;width:100%;
}
.faq-q .icon{
  width:28px;height:28px;border-radius:50%;border:2px solid rgba(19,32,51,.12);
  display:flex;align-items:center;justify-content:center;font-size:16px;
  color:var(--text-aux);transition:var(--transition);flex-shrink:0;
}
.faq-item.is-open .faq-q .icon{
  border-color:var(--primary);color:#fff;background:var(--primary);
  transform:rotate(180deg);
}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .35s ease;
}
.faq-a-inner{padding:0 24px 20px;font-size:15px;color:var(--text-sub);line-height:1.65}

/* ===== CTA ===== */
.cta-panel{
  background:linear-gradient(135deg,#EBF1FD 0%,#FFFFFF 60%,#F4F8FC 100%);
  border-radius:var(--radius-lg);padding:48px 48px 48px;
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  border:1px solid rgba(19,32,51,.06);
}
.cta-panel::before{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;
  border-radius:50%;border:2px solid rgba(43,109,232,.15);pointer-events:none;
}
.cta-panel::after{
  content:"◆";position:absolute;right:24px;bottom:16px;
  font-size:20px;color:rgba(43,109,232,.2);transform:rotate(45deg);
}
.cta-left{flex:1}
.cta-left h2{font-size:26px;font-weight:700;color:var(--text-main);margin-bottom:8px}
.cta-left p{font-size:14px;color:var(--text-sub);line-height:1.6}
.cta-right{flex-shrink:0}
@media screen and (max-width:900px){
  .cta-panel{flex-direction:column;align-items:flex-start;padding:32px 24px}
  .cta-right .btn{width:100%}
}

/* ===== 通用分割线 ===== */
.divider{height:1px;background:var(--border-color);margin:0}

/* ===== 页脚 ===== */
.site-footer{
  background:#132033;color:#B6C2D4;
  padding:64px 0 28px;margin-top:80px;
}
.footer-grid{
  display:flex;gap:48px;flex-wrap:wrap;margin-bottom:40px;
}
.footer-brand{flex:2;min-width:220px}
.footer-logo{
  font-size:22px;font-weight:700;color:#fff;
  display:flex;align-items:center;gap:8px;margin-bottom:14px;
}
.footer-brand p{font-size:14px;line-height:1.7;color:#B6C2D4}
.footer-links{
  flex:1;min-width:140px;display:flex;flex-direction:column;gap:2px;
}
.footer-links h4,.footer-contact h4{
  font-size:15px;font-weight:600;color:#fff;margin-bottom:14px;
}
.footer-links a{
  font-size:14px;color:#B6C2D4;padding:5px 0;
  transition:all .25s ease;
}
.footer-links a:hover{color:#fff;transform:translateX(4px)}
.footer-contact{flex:1.2;min-width:200px}
.footer-contact p{
  font-size:14px;color:#B6C2D4;margin-bottom:8px;display:flex;align-items:center;gap:10px;
}
.footer-contact p i{color:var(--accent);width:18px;text-align:center}
.footer-qr{
  width:88px;height:88px;background:#fff;border-radius:10px;
  padding:6px;margin-top:12px;
}
.footer-qr img{width:100%;height:100%;object-fit:cover;border-radius:6px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding-top:24px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;
}
.footer-bottom span,.footer-bottom .links a{
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom .links a{margin-left:20px;transition:color .2s}
.footer-bottom .links a:hover{color:#fff}
@media screen and (max-width:640px){
  .footer-grid{flex-direction:column;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* ===== 移动悬浮 CTA ===== */
.mobile-bottom-cta{
  display:none;position:fixed;bottom:0;left:0;right:0;z-index:99;
  background:rgba(255,255,255,.92);backdrop-filter:blur(12px);
  padding:12px 20px;box-shadow:0 -4px 20px rgba(19,32,51,.1);
  align-items:center;justify-content:space-between;gap:16px;
}
.mobile-bottom-cta .cta-txt{font-size:14px;font-weight:600;color:var(--text-main)}
.mobile-bottom-cta .btn{padding:10px 20px;font-size:13px}
@media screen and (max-width:768px){
  .mobile-bottom-cta{display:flex}
  body{padding-bottom:68px}
  .site-footer{margin-bottom:56px}
}

/* ===== 焦点装饰 ===== */
.section-focus{position:relative}
.section-focus::before{
  content:"";position:absolute;top:20px;left:-12px;width:6px;height:6px;
  border-radius:50%;background:var(--accent);opacity:.4;
}

/* roulang page: article */
/* ===== Design Tokens ===== */
:root {
  --primary: #2B6DE8;
  --primary-dark: #1B4FC4;
  --primary-light: #EBF1FD;
  --accent: #F97316;
  --accent-dark: #EA6A0C;
  --bg: #F4F8FC;
  --card-bg: #FFFFFF;
  --text-main: #132033;
  --text-sub: #4A5B72;
  --text-mut: #8A97A8;
  --border: rgba(19,32,51,.08);
  --border-strong: rgba(19,32,51,.12);
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 4px 12px rgba(19,32,51,.06);
  --shadow-md: 0 12px 28px rgba(19,32,51,.08);
  --shadow-lg: 0 20px 40px rgba(19,32,51,.12);
  --transition: .25s ease;
  --font-cn: "HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num: Inter,"DIN Alternate","Helvetica Neue",Arial,sans-serif;
}

/* ===== Reset / Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.7;
  color:var(--text-main);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  word-break:break-word;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--transition);}
a:hover{color:var(--primary);}
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
}
h1,h2,h3,h4,h5,h6{line-height:1.3;color:var(--text-main);font-weight:700;margin:0;}
ul,ol{list-style:none;}
button{cursor:pointer;border:none;background:none;font-family:inherit;}
input,select,textarea{font-family:inherit;font-size:inherit;}

/* ===== Layout ===== */
.grid-container{
  max-width:1200px;
  width:100%;
  margin-left:auto;
  margin-right:auto;
  padding-left:24px;
  padding-right:24px;
}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:10px;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  transition:all var(--transition);
  text-align:center;
  border:1px solid transparent;
}
.btn-sm{padding:8px 18px;font-size:14px;}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-sm);}
.btn-primary:active{transform:translateY(0) scale(.98);}
.btn-outline{background:#fff;border-color:var(--primary);color:var(--primary);}
.btn-outline:hover{background:var(--primary-light);color:var(--primary);transform:translateY(-1px);}
.btn-outline:active{transform:scale(.98);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:scale(1.02);box-shadow:var(--shadow-md);}
.btn-accent:active{transform:scale(.98);}
.btn-block{width:100%;}

/* ===== Header / Nav ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
  transition:box-shadow var(--transition), background var(--transition);
}
.site-header.scrolled{
  box-shadow:var(--shadow-sm);
  background:rgba(255,255,255,.98);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:72px;
  gap:16px;
  position:relative;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:20px;
  font-weight:700;
  color:var(--text-main);
  position:absolute;
  left:50%;
  transform:translateX(-50%);
  white-space:nowrap;
}
.logo:hover{color:var(--text-main);}
.logo-icon{
  width:36px;
  height:36px;
  border-radius:10px;
  background:var(--primary);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:15px;
  flex-shrink:0;
}
.logo-text{letter-spacing:.02em;}
.nav-left,.nav-right{display:flex;align-items:center;gap:6px;}
.nav-link{
  padding:8px 14px;
  font-size:14px;
  font-weight:500;
  color:var(--text-sub);
  border-radius:8px;
  position:relative;
  transition:color var(--transition), background var(--transition);
}
.nav-link:hover{color:var(--primary);background:var(--primary-light);}
.nav-link.active{color:var(--primary);font-weight:600;}
.nav-link.active::after{
  content:'';
  position:absolute;
  bottom:2px;
  left:14px;
  right:14px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
}
.hamburger{
  display:none;
  width:42px;
  height:42px;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  padding:8px;
  border-radius:8px;
  background:transparent;
  border:1px solid var(--border);
  transition:background var(--transition);
}
.hamburger:hover{background:var(--bg);}
.hamburger span{
  display:block;
  height:2px;
  background:var(--text-main);
  border-radius:2px;
  transition:all var(--transition);
}
.hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger.active span:nth-child(2){opacity:0;}
.hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.header-mobile-cta{
  display:none;
  padding:8px 16px;
  background:var(--primary);
  color:#fff;
  border-radius:8px;
  font-size:14px;
  font-weight:500;
  transition:background var(--transition);
}
.header-mobile-cta:hover{background:var(--primary-dark);color:#fff;}
.mobile-menu{
  display:none;
  position:fixed;
  top:72px;
  left:0;
  right:0;
  bottom:0;
  background:#fff;
  z-index:99;
  padding:16px 24px 32px;
  overflow-y:auto;
  border-top:1px solid var(--border);
}
.mobile-menu.open{display:block;}
.mobile-link{
  display:block;
  padding:15px 0;
  font-size:16px;
  font-weight:500;
  color:var(--text-main);
  border-bottom:1px solid var(--border);
  transition:color var(--transition);
}
.mobile-link:hover{color:var(--primary);}
.mobile-link.active{color:var(--primary);font-weight:600;}
.mobile-menu .btn{margin-top:20px;}

/* ===== Article Hero ===== */
.article-hero{
  background:linear-gradient(180deg, #EBF1FD 0%, #F4F8FC 100%);
  padding:48px 0 40px;
  border-bottom:1px solid var(--border);
}
.article-breadcrumb{
  font-size:14px;
  color:var(--text-mut);
  margin-bottom:24px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:4px;
}
.article-breadcrumb a{color:var(--text-mut);transition:color var(--transition);}
.article-breadcrumb a:hover{color:var(--primary);}
.article-breadcrumb .sep{color:var(--border-strong);margin:0 4px;}
.article-breadcrumb .current{color:var(--text-sub);font-weight:500;}
.article-header{max-width:860px;}
.article-cat{
  display:inline-flex;
  align-items:center;
  padding:5px 16px;
  background:rgba(43,109,232,.1);
  color:var(--primary);
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  margin-bottom:18px;
  letter-spacing:.02em;
}
.article-header h1{
  font-size:32px;
  line-height:1.3;
  margin-bottom:18px;
  color:var(--text-main);
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 14px;
  font-size:14px;
  color:var(--text-mut);
}
.article-meta i{margin-right:6px;font-size:13px;color:var(--text-mut);}
.article-meta .dot{color:var(--border-strong);}

/* ===== Article Wrap ===== */
.article-wrap{
  padding:40px 0 56px;
}
.article-body{
  max-width:760px;
  margin:0 auto;
  background:#fff;
  border-radius:var(--radius-lg);
  padding:44px 52px;
  box-shadow:var(--shadow-sm);
  border:1px solid var(--border);
  font-size:16px;
  line-height:1.75;
  color:var(--text-main);
}
.article-body h2{
  font-size:24px;
  font-weight:700;
  margin:44px 0 16px;
  line-height:1.35;
  position:relative;
}
.article-body h2::before{
  content:'';
  display:inline-block;
  width:4px;
  height:22px;
  background:var(--primary);
  border-radius:2px;
  margin-right:10px;
  vertical-align:-3px;
}
.article-body h3{
  font-size:19px;
  font-weight:600;
  margin:32px 0 12px;
  line-height:1.4;
}
.article-body p{
  margin-bottom:24px;
  line-height:1.8;
}
.article-body ul,.article-body ol{
  margin:0 0 24px 22px;
}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{
  margin-bottom:10px;
  line-height:1.7;
  padding-left:4px;
}
.article-body blockquote{
  border-left:4px solid var(--primary);
  background:var(--primary-light);
  padding:18px 22px;
  border-radius:0 12px 12px 0;
  margin:28px 0;
  color:var(--text-sub);
  font-size:15px;
  line-height:1.7;
}
.article-body blockquote p{margin-bottom:0;}
.article-body img{
  border-radius:14px;
  margin:28px 0;
  width:100%;
  height:auto;
  box-shadow:var(--shadow-sm);
}
.article-body figure{
  margin:28px 0;
}
.article-body figcaption{
  text-align:center;
  font-size:13px;
  color:var(--text-mut);
  margin-top:10px;
}
.article-body pre{
  background:var(--text-main);
  color:#E5EAF0;
  padding:22px;
  border-radius:12px;
  overflow-x:auto;
  font-family:var(--font-num);
  font-size:14px;
  line-height:1.6;
  margin-bottom:24px;
}
.article-body code{
  font-family:var(--font-num);
  font-size:14px;
  background:var(--bg);
  padding:2px 8px;
  border-radius:4px;
  color:var(--primary-dark);
}
.article-body pre code{
  background:transparent;
  color:inherit;
  padding:0;
}
.article-body a{
  color:var(--primary);
  text-decoration:underline;
  text-underline-offset:2px;
  text-decoration-color:rgba(43,109,232,.3);
}
.article-body a:hover{
  color:var(--primary-dark);
  text-decoration-color:var(--primary);
}
.article-body hr{
  border:none;
  border-top:1px solid var(--border);
  margin:36px 0;
}

/* ===== Article Extras ===== */
.article-extras{
  max-width:760px;
  margin:24px auto 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
}
.back-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:500;
  color:var(--text-sub);
  transition:color var(--transition), gap var(--transition);
}
.back-link:hover{
  color:var(--primary);
  gap:10px;
}
.article-footer-info{
  max-width:760px;
  margin:28px auto 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:20px;
  padding:24px 0 0;
  border-top:1px solid var(--border);
}
.article-tags{
  display:flex;
  gap:8px;
  flex-wrap:wrap;
}
.article-tag{
  display:inline-flex;
  align-items:center;
  padding:6px 16px;
  border-radius:999px;
  background:var(--bg);
  border:1px solid var(--border);
  font-size:13px;
  color:var(--text-sub);
  font-weight:500;
  transition:all var(--transition);
}
.article-tag:hover{
  color:var(--primary);
  border-color:var(--primary);
  background:var(--primary-light);
}
.article-share{
  display:flex;
  align-items:center;
  gap:6px;
}
.share-label{
  font-size:14px;
  color:var(--text-sub);
  margin-right:4px;
}
.share-btn{
  width:36px;
  height:36px;
  border-radius:50%;
  background:var(--bg);
  color:var(--text-sub);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:15px;
  transition:all var(--transition);
}
.share-btn:hover{
  background:var(--primary);
  color:#fff;
  transform:translateY(-2px);
}
.share-btn:active{transform:scale(.95);}

/* ===== Article Empty ===== */
.article-empty{
  max-width:760px;
  margin:0 auto;
  background:#fff;
  border-radius:var(--radius-lg);
  border:2px dashed var(--border-strong);
  padding:72px 40px;
  text-align:center;
}
.article-empty i{
  font-size:46px;
  color:var(--text-mut);
  margin-bottom:20px;
  opacity:.5;
}
.article-empty h2{
  font-size:22px;
  margin-bottom:10px;
  color:var(--text-main);
}
.article-empty p{
  font-size:15px;
  color:var(--text-sub);
  margin-bottom:28px;
}
.article-empty .btn{
  margin:0 6px 8px;
}

/* ===== Related ===== */
.related-section{
  padding:56px 0 32px;
  border-top:1px solid var(--border);
}
.related-head{
  text-align:center;
  margin-bottom:40px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  font-size:13px;
  font-weight:600;
  color:var(--primary);
  letter-spacing:.04em;
  text-transform:uppercase;
  margin-bottom:10px;
}
.related-head .eyebrow::before,
.related-head .eyebrow::after{
  content:'';
  display:inline-block;
  width:24px;
  height:1px;
  background:var(--primary);
  opacity:.3;
  margin:0 12px;
}
.related-head h2{
  font-size:28px;
  color:var(--text-main);
}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.related-card{
  display:flex;
  flex-direction:column;
  background:#fff;
  border-radius:var(--radius-md);
  overflow:hidden;
  border:1px solid var(--border);
  box-shadow:var(--shadow-sm);
  transition:all var(--transition);
}
.related-card:hover{
  box-shadow:var(--shadow-md);
  transform:translateY(-3px);
}
.related-thumb{
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--bg);
}
.related-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.related-card:hover .related-thumb img{transform:scale(1.04);}
.related-card-body{
  padding:20px 22px 18px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.cat-label{
  display:inline-block;
  align-self:flex-start;
  padding:3px 12px;
  border-radius:4px;
  background:var(--primary-light);
  color:var(--primary);
  font-size:12px;
  font-weight:600;
  margin-bottom:12px;
}
.related-card h3{
  font-size:17px;
  font-weight:600;
  line-height:1.45;
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  color:var(--text-main);
}
.related-card h3:hover{color:var(--primary);}
.related-card .summary{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.6;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:16px;
  flex:1;
}
.related-card .meta-row{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:13px;
  color:var(--text-mut);
  border-top:1px solid var(--border);
  padding-top:14px;
}
.related-card .meta-row .go{
  margin-left:auto;
  color:var(--primary);
  font-weight:500;
  font-size:13px;
}

/* ===== CTA ===== */
.article-cta-section{
  padding:24px 0 0;
  margin-bottom:80px;
}
.article-cta{
  background:linear-gradient(135deg, #EBF1FD 0%, #F4F8FC 100%);
  border-radius:var(--radius-lg);
  padding:44px 52px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
  position:relative;
  overflow:hidden;
  border:1px solid var(--border);
}
.article-cta::before{
  content:'';
  position:absolute;
  right:-70px;
  top:-70px;
  width:180px;
  height:180px;
  border-radius:50%;
  border:2px solid rgba(43,109,232,.15);
  pointer-events:none;
}
.article-cta::after{
  content:'';
  position:absolute;
  right:40px;
  bottom:-90px;
  width:140px;
  height:140px;
  border-radius:50%;
  border:1px solid rgba(249,115,22,.12);
  pointer-events:none;
}
.article-cta h2{
  font-size:24px;
  font-weight:700;
  margin-bottom:8px;
  position:relative;
  z-index:1;
}
.article-cta p{
  font-size:14px;
  color:var(--text-sub);
  position:relative;
  z-index:1;
}
.cta-actions{
  display:flex;
  align-items:center;
  gap:20px;
  flex-wrap:wrap;
  position:relative;
  z-index:1;
}
.cta-phone{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:20px;
  font-weight:700;
  color:var(--text-main);
  font-family:var(--font-num);
}
.cta-phone i{
  color:var(--accent);
  font-size:18px;
}

/* ===== Footer ===== */
.site-footer{
  background:var(--text-main);
  color:#B6C2D4;
  padding:64px 0 24px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:20px;
  font-weight:700;
  color:#fff;
  margin-bottom:14px;
}
.footer-logo .logo-icon{
  background:var(--primary);
  color:#fff;
}
.footer-brand p{
  font-size:14px;
  line-height:1.7;
  color:#8A97A8;
  max-width:280px;
}
.footer-links h4{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin-bottom:16px;
}
.footer-links a{
  display:block;
  font-size:14px;
  color:#8A97A8;
  margin-bottom:10px;
  transition:color var(--transition), transform var(--transition);
}
.footer-links a:hover{
  color:#fff;
  transform:translateX(2px);
}
.footer-contact h4{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin-bottom:16px;
}
.footer-contact p{
  font-size:14px;
  color:#8A97A8;
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:12px;
  line-height:1.5;
}
.footer-contact i{
  color:var(--primary);
  width:16px;
  text-align:center;
  font-size:14px;
}
.footer-qr{
  width:80px;
  height:80px;
  background:#fff;
  border-radius:8px;
  padding:6px;
  margin-top:12px;
}
.footer-qr img{
  width:100%;
  height:100%;
  object-fit:cover;
  border-radius:4px;
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  padding-top:24px;
  font-size:13px;
  color:#6B7A8F;
}
.footer-bottom .links{
  display:flex;
  gap:18px;
}
.footer-bottom .links a{
  color:#6B7A8F;
  transition:color var(--transition);
}
.footer-bottom .links a:hover{color:#fff;}

/* ===== Mobile Sticky CTA ===== */
.mobile-sticky-cta{
  display:none;
  position:fixed;
  bottom:0;
  left:0;
  right:0;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);
  padding:12px 20px;
  border-top:1px solid var(--border);
  box-shadow:0 -4px 20px rgba(19,32,51,.06);
  z-index:90;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.mobile-sticky-cta span{
  font-size:14px;
  font-weight:600;
  color:var(--text-main);
}
.mobile-sticky-cta a{
  padding:10px 22px;
}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .desktop-only{display:none !important;}
  .hamburger{display:flex;}
  .logo{
    position:static;
    transform:none;
    margin:0 auto;
  }
  .header-inner{
    display:flex;
    gap:8px;
  }
  .hamburger{order:1;}
  .logo{order:2;}
  .header-mobile-cta{order:3;display:inline-flex;}
  .article-body{padding:36px 32px;}
  .article-cta{padding:36px 32px;}
  .footer-grid{
    grid-template-columns:1fr 1fr;
    gap:32px;
  }
}
@media (max-width:768px){
  .grid-container{
    padding-left:16px;
    padding-right:16px;
  }
  .article-hero{
    padding:32px 0 28px;
  }
  .article-header h1{
    font-size:26px;
    line-height:1.35;
  }
  .article-wrap{
    padding:24px 0 40px;
  }
  .article-body{
    padding:28px 20px;
    border-radius:16px;
  }
  .article-body p{
    font-size:15px;
    line-height:1.75;
  }
  .article-body h2{
    font-size:21px;
    margin-top:36px;
  }
  .article-body h3{
    font-size:17px;
  }
  .article-footer-info{
    flex-direction:column;
    align-items:flex-start;
  }
  .article-share{
    width:100%;
  }
  .related-grid{
    grid-template-columns:1fr;
    gap:18px;
  }
  .related-head h2{
    font-size:22px;
  }
  .article-cta{
    padding:32px 24px;
    flex-direction:column;
    align-items:flex-start;
  }
  .cta-actions{
    width:100%;
    justify-content:space-between;
  }
  .cta-phone{
    font-size:17px;
  }
  .footer-grid{
    grid-template-columns:1fr;
    gap:28px;
  }
  .footer-bottom{
    flex-direction:column;
    justify-content:center;
    text-align:center;
  }
  .footer-bottom .links{
    justify-content:center;
    flex-wrap:wrap;
  }
  body{
    padding-bottom:0;
  }
  .mobile-sticky-cta{
    display:flex;
  }
  body{
    padding-bottom:64px;
  }
}
@media (max-width:520px){
  .article-cat{
    font-size:12px;
    padding:4px 12px;
  }
  .article-header h1{
    font-size:24px;
  }
  .article-meta{
    font-size:13px;
    gap:6px 10px;
  }
  .article-meta i{display:none;}
  .article-body{
    padding:24px 18px;
  }
  .article-body blockquote{
    padding:14px 16px;
    font-size:14px;
  }
  .related-card h3{
    font-size:16px;
  }
  .cta-actions{
    flex-direction:column;
    align-items:stretch;
    gap:12px;
  }
  .cta-phone{
    justify-content:center;
    font-size:16px;
  }
  .article-cta a.btn-accent{
    width:100%;
  }
  .mobile-sticky-cta span{
    font-size:13px;
  }
  .mobile-sticky-cta a{
    padding:8px 16px;
    font-size:13px;
  }
}

/* roulang page: category2 */
:root {
  --primary: #2B6DE8;
  --primary-dark: #1B4FC4;
  --accent: #F97316;
  --bg: #F4F8FC;
  --white: #FFFFFF;
  --text: #132033;
  --text-secondary: #4A5B72;
  --text-muted: #8A97A8;
  --border: rgba(19, 32, 51, .08);
  --radius: 14px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --shadow-sm: 0 4px 12px rgba(19, 32, 51, .06);
  --shadow-md: 0 12px 28px rgba(19, 32, 51, .08);
  --shadow-lg: 0 20px 40px rgba(19, 32, 51, .12);
  --transition: .25s ease;
  --font-body: "HarmonyOS Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-num: Inter, "DIN Alternate", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  word-break: normal;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: var(--text); transition: color var(--transition); }
ul, ol { list-style: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; font-size: 16px; }

.grid-container { max-width: 1200px; padding-left: 24px; padding-right: 24px; }
.section { padding: 96px 0; }
.section-eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section h2 {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 16px;
}
.section .section-desc { color: var(--text-secondary); max-width: 640px; }
.section-head.center { text-align: center; }
.section-head.center .section-desc { margin-left: auto; margin-right: auto; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition), background var(--transition);
}
.site-header.scrolled { box-shadow: var(--shadow-sm); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; position: relative; }
.logo { display: flex; align-items: center; gap: 10px; position: absolute; left: 50%; transform: translateX(-50%); z-index: 2; }
.logo-icon {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 18px;
  box-shadow: 0 6px 16px rgba(43, 109, 232, .28);
}
.logo-text { font-size: 21px; font-weight: 700; color: var(--text); letter-spacing: .01em; }
.nav-left, .nav-right { display: flex; align-items: center; gap: 6px; }
.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  padding: 8px 14px;
  border-radius: 8px;
  position: relative;
  transition: color var(--transition), background var(--transition);
}
.nav-link:hover { color: var(--primary); background: rgba(43, 109, 232, .06); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 2px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  opacity: .85;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 10px;
  padding: 12px 24px;
  transition: all var(--transition);
  border: 1px solid transparent;
  line-height: 1.4;
  white-space: nowrap;
}
.btn-sm { padding: 8px 18px; font-size: 14px; }
.btn-block { width: 100%; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(43, 109, 232, .3); }
.btn-primary:active { transform: translateY(0); }
.btn-outline { background: var(--white); color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: #EBF1FD; color: var(--primary-dark); transform: translateY(-2px); }
.btn-outline:active { transform: translateY(0); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: #EA6A0C; color: #fff; transform: scale(1.02); box-shadow: 0 8px 22px rgba(249, 115, 22, .32); }
.btn-accent:active { transform: scale(.99); }
.hamburger { display: none; flex-direction: column; gap: 5px; width: 44px; height: 44px; align-items: center; justify-content: center; border-radius: 8px; }
.hamburger span { display: block; width: 20px; height: 2px; background: var(--text); border-radius: 2px; transition: all var(--transition); }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.header-mobile-cta { display: none; background: var(--primary); color: #fff; padding: 8px 16px; border-radius: 8px; font-size: 14px; font-weight: 600; }
.mobile-menu {
  display: none;
  flex-direction: column;
  padding: 12px 24px 24px;
  background: #fff;
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  position: absolute;
  top: 72px; left: 0; right: 0;
  z-index: 999;
}
.mobile-menu.open { display: flex; }
.mobile-link {
  padding: 14px 8px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}
.mobile-link:last-of-type { border-bottom: none; }
.mobile-link:active { color: var(--primary); }
.mobile-link.active { color: var(--primary); font-weight: 600; }
.mobile-menu .btn { margin-top: 16px; }

/* ===== 分类页 Hero ===== */
.page-hero {
  position: relative;
  padding: 148px 0 80px;
  background: linear-gradient(135deg, #EAF1FB 0%, #F9FBFE 55%, #FFFFFF 100%);
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.webp') no-repeat center right / cover;
  opacity: .08;
  pointer-events: none;
}
.page-hero-inner { position: relative; z-index: 1; }
.breadcrumb { font-size: 14px; color: var(--text-muted); margin-bottom: 24px; }
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb span { color: var(--text-secondary); font-weight: 500; }
.hero-title-wrap { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 18px; }
.hero-bar { width: 6px; height: 68px; background: var(--primary); border-radius: 6px; flex-shrink: 0; margin-top: 6px; }
.page-hero h1 { font-size: 38px; font-weight: 700; line-height: 1.25; color: var(--text); }
.hero-sub { font-size: 17px; color: var(--text-secondary); margin-bottom: 28px; max-width: 480px; line-height: 1.7; }
.hero-meta { display: flex; gap: 32px; margin-bottom: 32px; flex-wrap: wrap; }
.hero-stat { display: flex; flex-direction: column; }
.hero-stat .num { font-family: var(--font-num); font-size: 28px; font-weight: 700; color: var(--accent); line-height: 1.2; }
.hero-stat span:last-child { font-size: 13px; color: var(--text-muted); margin-top: 4px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-cover { position: relative; }
.hero-cover img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border-radius: 20px;
  box-shadow: var(--shadow-lg);
  border: 4px solid #fff;
}
.hero-cover::after {
  content: "专业教练全程带训";
  position: absolute;
  left: 20px; bottom: 20px;
  background: rgba(19, 32, 51, .78);
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 999px;
  backdrop-filter: blur(6px);
  letter-spacing: .02em;
}

/* ===== 课程介绍 ===== */
.course-intro { background: #fff; }
.course-intro .section-eyebrow { color: var(--primary); }
.course-intro h2 { font-size: 30px; margin-bottom: 18px; }
.course-intro .inner-desc { color: var(--text-secondary); font-size: 16px; margin-bottom: 28px; line-height: 1.8; }
.feature-list li { display: flex; align-items: flex-start; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--border); font-size: 15px; color: var(--text-secondary); }
.feature-list li:last-child { border-bottom: none; }
.feature-list i { color: var(--primary); font-size: 18px; margin-top: 2px; flex-shrink: 0; }
.course-intro-media { position: relative; }
.course-intro-media img { width: 100%; height: 400px; object-fit: cover; border-radius: 20px; box-shadow: var(--shadow-md); }
.media-float {
  position: absolute;
  right: 18px; top: 18px;
  background: rgba(255, 255, 255, .92);
  border: 1px solid var(--border);
  padding: 12px 20px;
  border-radius: 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(8px);
  letter-spacing: .02em;
}
.media-float::before {
  content: "●";
  color: var(--accent);
  font-size: 10px;
  margin-right: 8px;
  vertical-align: middle;
}

/* ===== 课程体系 ===== */
.curriculum { background: var(--bg); }
.curriculum-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin-top: 44px; }
.curriculum-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  display: flex;
  gap: 20px;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}
.curriculum-card::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--primary);
  opacity: 0;
  transition: opacity var(--transition);
}
.curriculum-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.curriculum-card:hover::before { opacity: 1; }
.curriculum-num {
  font-family: var(--font-num);
  font-size: 38px;
  font-weight: 700;
  color: rgba(43, 109, 232, .18);
  line-height: 1;
  flex-shrink: 0;
  min-width: 52px;
}
.curriculum-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; color: var(--text); }
.curriculum-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.curriculum-tag {
  display: inline-block;
  margin-top: 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(43, 109, 232, .08);
  padding: 4px 12px;
  border-radius: 999px;
}

/* ===== 适用场景 ===== */
.scenarios { background: #fff; }
.scenario-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; grid-template-rows: 1fr 1fr; gap: 20px; margin-top: 44px; }
.scenario-card {
  border-radius: 16px;
  padding: 28px;
  background: var(--bg);
  border: 1px solid var(--border);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.scenario-card:first-child { grid-row: span 2; background: linear-gradient(135deg, #132033 0%, #1F2E44 100%); border: none; display: flex; flex-direction: column; justify-content: flex-end; color: #fff; }
.scenario-card:first-child h3 { color: #fff; font-size: 22px; }
.scenario-card:first-child p { color: rgba(255, 255, 255, .72); }
.scenario-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.scenario-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.65; }
.scenario-card i { font-size: 24px; color: var(--primary); margin-bottom: 16px; }
.scenario-card:first-child i { color: var(--accent); margin-bottom: auto; font-size: 32px; }
.scenario-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.scenario-card:first-child:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.scenario-more {
  margin-top: 12px;
  font-size: 14px;
  color: var(--primary);
  font-weight: 500;
}
.scenario-card:first-child .scenario-more { color: var(--accent); }

/* ===== 教学流程 ===== */
.process { background: var(--bg); }
.process-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; margin-top: 48px; position: relative; }
.process-steps::before {
  content: "";
  position: absolute;
  top: 32px; left: 8%; right: 8%;
  height: 2px;
  background: rgba(43, 109, 232, .15);
  z-index: 0;
}
.process-step { text-align: center; position: relative; z-index: 1; }
.process-step .step-icon {
  width: 64px; height: 64px;
  background: #fff;
  border: 2px solid var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-family: var(--font-num);
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  box-shadow: 0 0 0 6px rgba(43, 109, 232, .08);
  transition: all var(--transition);
}
.process-step:hover .step-icon { background: var(--primary); color: #fff; box-shadow: 0 0 0 8px rgba(43, 109, 232, .12); }
.process-step h3 { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.process-step p { font-size: 13px; color: var(--text-muted); line-height: 1.6; padding: 0 4px; }

/* ===== FAQ ===== */
.faq-section { background: #fff; }
.faq-list { max-width: 860px; margin: 44px auto 0; }
.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 14px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow var(--transition);
}
.faq-item.active { box-shadow: var(--shadow-sm); border-color: rgba(43, 109, 232, .25); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  width: 100%;
  text-align: left;
  background: none;
  transition: color var(--transition);
}
.faq-question:hover { color: var(--primary); }
.faq-question .faq-icon {
  width: 30px; height: 30px;
  border: 1.5px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--text-muted);
  transition: all var(--transition);
}
.faq-item.active .faq-icon { border-color: var(--primary); color: var(--primary); transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-answer-inner {
  padding: 0 24px 22px;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  border-top: 1px solid var(--border);
  padding-top: 16px;
  margin: 0 24px 0;
  padding-left: 0;
  padding-right: 0;
}

/* ===== CTA ===== */
.cta-section { background: var(--bg); }
.cta-panel {
  background: linear-gradient(135deg, #EAF1FB 0%, #FFFFFF 100%);
  border-radius: 20px;
  padding: 52px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.cta-panel::before {
  content: "";
  position: absolute;
  right: -80px; bottom: -80px;
  width: 280px; height: 280px;
  background: radial-gradient(circle, rgba(43,109,232,.08) 0%, transparent 70%);
  pointer-events: none;
}
.cta-grid { position: relative; z-index: 1; }
.cta-left h2 { font-size: 30px; font-weight: 700; margin-bottom: 12px; color: var(--text); }
.cta-left p { color: var(--text-secondary); font-size: 15px; }
.cta-form { background: #fff; border-radius: 16px; padding: 30px; box-shadow: var(--shadow-md); }
.cta-form .form-title { font-size: 18px; font-weight: 600; margin-bottom: 20px; color: var(--text); }
.cta-form .form-title i { color: var(--accent); margin-right: 8px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; font-weight: 500; margin-bottom: 6px; color: var(--text-secondary); }
.form-group input[type="text"], .form-group input[type="tel"] {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid rgba(19,32,51,.12);
  border-radius: 10px;
  font-size: 16px;
  background: #F9FBFE;
  transition: all var(--transition);
  outline: none;
}
.form-group input:focus { border-color: var(--primary); background: #fff; box-shadow: 0 0 0 3px rgba(43, 109, 232, .15); }
.form-error { color: #E5484D; font-size: 13px; margin-top: 4px; display: none; }
.form-group input.invalid { border-color: #E5484D; }
.form-group input.invalid ~ .form-error { display: block; }
.choice-group { display: flex; flex-wrap: wrap; gap: 8px; }
.choice-pill {
  padding: 8px 16px;
  border: 1px solid rgba(19,32,51,.12);
  border-radius: 999px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
  background: #fff;
}
.choice-pill:hover { border-color: var(--primary); color: var(--primary); }
.choice-pill.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.form-submit { width: 100%; margin-top: 8px; }

/* ===== 页脚 ===== */
.site-footer { background: #132033; color: #B6C2D4; padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 48px; padding-bottom: 44px; }
.footer-brand .footer-logo { font-size: 20px; font-weight: 700; color: #fff; display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.8; color: #8A97A8; max-width: 280px; }
.footer-links h4 { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 16px; }
.footer-links a { display: block; font-size: 14px; color: #B6C2D4; margin-bottom: 10px; transition: all var(--transition); }
.footer-links a:hover { color: #fff; transform: translateX(2px); }
.footer-contact h4 { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 16px; }
.footer-contact p { font-size: 14px; color: #B6C2D4; margin-bottom: 10px; display: flex; align-items: center; gap: 10px; }
.footer-contact i { color: var(--primary); width: 16px; text-align: center; }
.footer-qr { margin-top: 16px; width: 80px; height: 80px; background: #fff; border-radius: 10px; padding: 4px; }
.footer-qr img { width: 100%; height: 100%; object-fit: cover; border-radius: 8px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 20px 0; display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; font-size: 13px; color: #8A97A8; }
.footer-bottom .links { display: flex; gap: 20px; }
.footer-bottom a { color: #8A97A8; font-size: 13px; transition: color var(--transition); }
.footer-bottom a:hover { color: #fff; }

/* ===== 移动端悬浮 ===== */
.mobile-float-cta {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 998;
  background: rgba(255,255,255,.9);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
  padding: 10px 20px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  box-shadow: 0 -4px 20px rgba(0,0,0,.05);
}
.mobile-float-cta .text { font-size: 14px; font-weight: 600; color: var(--text); }
.mobile-float-cta .btn { padding: 10px 20px; font-size: 14px; }

/* ===== 通用 ===== */
.stats-bar { background: #fff; border-bottom: 1px solid var(--border); }
.stats-bar .inner { display: flex; justify-content: space-around; padding: 32px 0; flex-wrap: wrap; gap: 20px; }
.stat-block { text-align: center; }
.stat-block .num { font-family: var(--font-num); font-size: 32px; font-weight: 700; color: var(--primary); }
.stat-block .label { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .desktop-only { display: none; }
  .hamburger { display: flex; }
  .header-mobile-cta { display: inline-flex; }
  .logo { position: absolute; left: 50%; transform: translateX(-50%); }
  .header-inner { justify-content: space-between; }
  .logo-text { font-size: 19px; }
  .page-hero { padding: 120px 0 60px; }
  .page-hero h1 { font-size: 30px; }
  .hero-cover img { height: 340px; }
  .process-steps { grid-template-columns: repeat(3, 1fr); row-gap: 32px; }
  .process-steps::before { display: none; }
  .scenario-grid { grid-template-columns: 1fr 1fr; }
  .scenario-card:first-child { grid-row: auto; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .curriculum-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section h2 { font-size: 24px; }
  .hero-meta { gap: 20px; }
  .hero-stat .num { font-size: 24px; }
  .page-hero .grid-x > .cell { margin-bottom: 32px; }
  .page-hero .grid-x > .cell:last-child { margin-bottom: 0; }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .cta-panel { padding: 32px 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .mobile-float-cta { display: flex; }
  body { padding-bottom: 0; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 640px) {
  .grid-container { padding-left: 16px; padding-right: 16px; }
  .hero-title-wrap { gap: 12px; }
  .hero-bar { height: 54px; }
  .page-hero h1 { font-size: 28px; }
  .hero-sub { font-size: 15px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .hero-cover img { height: 260px; border-radius: 16px; }
  .scenario-grid { grid-template-columns: 1fr; }
  .curriculum-card { padding: 24px; }
  .cta-left .btn { width: 100%; }
  .process-steps { grid-template-columns: 1fr 1fr; gap: 16px; }
  .mobile-float-cta .text { font-size: 13px; }
  .footer-bottom .links { gap: 12px; flex-wrap: wrap; justify-content: center; }
}
@media (max-width: 520px) {
  .process-steps { grid-template-columns: 1fr 1fr; }
  .process-step p { display: none; }
}

a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* roulang page: category3 */
:root {
  --primary: #2B6DE8;
  --primary-dark: #1B4FC4;
  --primary-light: #EBF1FD;
  --accent: #F97316;
  --accent-dark: #EA6A0C;
  --bg: #F4F8FC;
  --card-bg: #FFFFFF;
  --text-main: #132033;
  --text-sub: #4A5B72;
  --text-weak: #8A97A8;
  --border: rgba(19,32,51,.08);
  --border-strong: rgba(19,32,51,.12);
  --radius-card: 14px;
  --radius-btn: 10px;
  --radius-panel: 20px;
  --shadow-card: 0 4px 12px rgba(19,32,51,.06);
  --shadow-hover: 0 12px 28px rgba(19,32,51,.08);
  --shadow-float: 0 20px 40px rgba(19,32,51,.12);
  --transition: .25s ease;
  --font-cn: "HarmonyOS Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-num: "Inter", "DIN Alternate", "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-cn);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-main);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  word-break: break-word;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
ul, ol { list-style: none; }
button { font-family: inherit; border: none; cursor: pointer; background: none; }
input, select, textarea { font-family: inherit; }

.grid-container { max-width: 1200px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }
.grid-x { display: flex; flex-wrap: wrap; }
.grid-margin-x { margin-left: -12px; margin-right: -12px; }
.grid-margin-x > .cell { padding-left: 12px; padding-right: 12px; }
.cell { flex: 0 0 auto; }
.small-12 { width: 100%; }
.medium-6 { width: 50%; }
.medium-7 { width: 58.3333%; }
.medium-5 { width: 41.6667%; }
.large-4 { width: 33.3333%; }

/* ========== Header ========== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition), background var(--transition);
}
.site-header.scrolled { box-shadow: 0 4px 20px rgba(19,32,51,.08); background: #fff; }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border-radius: 10px;
  font-size: 16px;
  transform: rotate(-8deg);
  transition: transform var(--transition);
}
.logo:hover .logo-icon { transform: rotate(0deg) scale(1.05); }
.logo-text {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--text-main);
  white-space: nowrap;
}

.nav-left, .nav-right { display: flex; align-items: center; gap: 6px; }
.nav-right { gap: 8px; }

.nav-link {
  padding: 8px 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-sub);
  border-radius: 8px;
  position: relative;
  transition: color var(--transition);
}
.nav-link:hover { color: var(--primary); }
.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 10px; right: 10px; bottom: 2px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: var(--radius-btn);
  transition: all var(--transition);
  line-height: 1.4;
  cursor: pointer;
  border: 1px solid transparent;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(43,109,232,.3); }
.btn-primary:active { transform: translateY(-1px) scale(.98); }
.btn-primary:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-dark); transform: scale(1.02); box-shadow: 0 8px 20px rgba(249,115,22,.3); }
.btn-accent:active { transform: scale(.98); }
.btn-accent:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.btn-outline { background: #fff; color: var(--primary); border: 1px solid var(--primary); }
.btn-outline:hover { background: var(--primary-light); transform: translateY(-2px); }
.btn-outline:active { transform: translateY(-1px) scale(.98); }
.btn-outline:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

.btn-sm { padding: 8px 16px; font-size: 14px; }
.btn-block { width: 100%; }

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px; height: 44px;
  padding: 10px;
  border-radius: 8px;
  background: var(--text-main);
  z-index: 1101;
}
.hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all .3s ease;
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.header-mobile-cta { display: none; font-size: 14px; font-weight: 600; color: var(--primary); padding: 8px 12px; }

.mobile-menu {
  display: none;
  background: #fff;
  border-top: 1px solid var(--border);
  padding: 16px 24px 24px;
  flex-direction: column;
  gap: 4px;
}
.mobile-menu.show { display: flex; }
.mobile-link {
  padding: 14px 10px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-main);
  border-bottom: 1px solid var(--border);
  transition: color var(--transition), padding-left var(--transition);
}
.mobile-link:hover { color: var(--primary); }
.mobile-link.active { color: var(--primary); font-weight: 600; }
.mobile-menu .btn { margin-top: 16px; }

/* ========== Category Hero ========== */
.cat-hero {
  padding: 140px 0 64px;
  background: linear-gradient(135deg, #EAF1FA 0%, #F7FAFD 55%, #FFFFFF 100%);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.cat-hero::before {
  content: "";
  position: absolute;
  right: -80px; top: -80px;
  width: 340px; height: 340px;
  background: radial-gradient(circle, rgba(43,109,232,.06) 0%, transparent 70%);
  pointer-events: none;
}
.cat-hero-inner {
  display: flex;
  align-items: center;
  gap: 48px;
}
.cat-hero-left {
  flex: 1;
  position: relative;
  padding-left: 20px;
}
.cat-hero-left::before {
  content: "";
  position: absolute;
  left: 0; top: 8px; bottom: 8px;
  width: 6px;
  border-radius: 6px;
  background: var(--accent);
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--text-weak);
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-sub); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .current { color: var(--text-weak); cursor: default; }
.breadcrumb .sep { color: var(--text-weak); }

.cat-hero h1 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-main);
  margin-bottom: 16px;
  letter-spacing: .01em;
}
.cat-hero .subtitle {
  font-size: 16px;
  color: var(--text-sub);
  max-width: 480px;
  line-height: 1.7;
}
.cat-hero-right {
  width: 360px;
  flex-shrink: 0;
  position: relative;
}
.cat-hero-right .cover-wrap {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-float);
  aspect-ratio: 4/3;
  background: #fff;
}
.cat-hero-right .cover-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.cat-hero-right:hover .cover-wrap img { transform: scale(1.03); }
.cat-hero-badge {
  position: absolute;
  right: -12px; bottom: -12px;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 8px 20px;
  border-radius: 999px;
  box-shadow: 0 6px 16px rgba(249,115,22,.3);
}

/* ========== Section base ========== */
.section { padding: 88px 0; position: relative; }
.section-alt { background: #fff; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 10px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.eyebrow::before {
  content: "";
  width: 18px; height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.section-title {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text-main);
  margin-bottom: 14px;
}
.section-desc {
  font-size: 15px;
  color: var(--text-sub);
  max-width: 620px;
  margin-bottom: 48px;
  line-height: 1.7;
}

/* ========== Intro split ========== */
.intro-section { padding: 88px 0; }
.intro-grid {
  display: flex;
  gap: 48px;
  align-items: center;
}
.intro-left { flex: 7; }
.intro-right { flex: 5; }
.intro-left .section-title { font-size: 26px; margin-bottom: 20px; }
.intro-copy { font-size: 15px; color: var(--text-sub); line-height: 1.85; }
.intro-copy p + p { margin-top: 16px; }

.feature-list { display: flex; flex-direction: column; gap: 0; }
.feature-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
  transition: padding-left var(--transition);
}
.feature-item:last-child { border-bottom: none; }
.feature-item:hover { padding-left: 8px; }
.feature-item .fi-icon {
  width: 46px; height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 18px;
  flex-shrink: 0;
}
.feature-item .fi-text { font-size: 15px; font-weight: 500; color: var(--text-main); }
.feature-item .fi-sub { font-size: 13px; color: var(--text-weak); margin-top: 2px; }

/* ========== Service list (numbered) ========== */
.service-section { padding: 88px 0; background: #fff; }
.service-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.svc-item {
  background: var(--bg);
  border-radius: var(--radius-card);
  padding: 32px;
  border: 1px solid rgba(19,32,51,.04);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.svc-item::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--primary);
  opacity: 0;
  transition: opacity var(--transition);
}
.svc-item:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.svc-item:hover::before { opacity: 1; }
.svc-num {
  font-family: var(--font-num);
  font-size: 38px;
  font-weight: 700;
  color: rgba(43,109,232,.18);
  line-height: 1;
  margin-bottom: 18px;
  display: block;
  transition: color var(--transition);
}
.svc-item:hover .svc-num { color: var(--accent); }
.svc-item h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; color: var(--text-main); }
.svc-item p { font-size: 14px; color: var(--text-sub); line-height: 1.7; }

/* ========== Scenes ========== */
.scene-section { padding: 88px 0; }
.scene-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.scene-card {
  background: #fff;
  border-radius: var(--radius-card);
  padding: 28px 24px;
  text-align: center;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
}
.scene-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(43,109,232,.2);
}
.scene-icon {
  width: 60px; height: 60px;
  margin: 0 auto 16px;
  border-radius: 16px;
  background: var(--bg);
  color: var(--primary);
  font-size: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.scene-card:hover .scene-icon { background: var(--primary); color: #fff; }
.scene-card h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.scene-card p { font-size: 13px; color: var(--text-sub); line-height: 1.6; }

/* ========== Process ========== */
.process-section { padding: 88px 0; background: #132033; color: #fff; }
.process-section .section-title { color: #fff; }
.process-section .section-desc { color: #B6C2D4; }
.process-section .eyebrow { color: #7FA7F0; }
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}
.process-grid::before {
  content: "";
  position: absolute;
  top: 32px; left: 8%; right: 8%;
  height: 2px;
  background: rgba(255,255,255,.12);
}
.process-step {
  text-align: center;
  padding: 0 16px;
  position: relative;
}
.step-dot {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-family: var(--font-num);
  font-size: 20px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  position: relative;
  z-index: 2;
  border: 4px solid #132033;
  box-shadow: 0 0 0 2px rgba(255,255,255,.2);
  transition: all var(--transition);
}
.process-step:hover .step-dot { background: var(--accent); transform: scale(1.08); }
.process-step h3 { font-size: 17px; font-weight: 600; margin-bottom: 10px; }
.process-step p { font-size: 13px; color: #B6C2D4; line-height: 1.6; }

/* ========== FAQ ========== */
.faq-section { padding: 88px 0; }
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition);
}
.faq-item:hover { box-shadow: var(--shadow-card); border-color: rgba(43,109,232,.15); }
.faq-item.open { border-color: rgba(43,109,232,.3); box-shadow: var(--shadow-card); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  user-select: none;
  transition: color var(--transition);
}
.faq-q:hover { color: var(--primary); }
.faq-toggle {
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 2px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--text-sub);
  transition: all var(--transition);
  flex-shrink: 0;
}
.faq-item.open .faq-toggle {
  border-color: var(--primary);
  color: var(--primary);
  transform: rotate(45deg);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease;
}
.faq-a-inner {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.7;
}

/* ========== CTA ========== */
.cta-section { padding: 88px 0 96px; background: #fff; }
.cta-panel {
  background: linear-gradient(135deg, #E8F0FB 0%, #F7F9FC 60%, #FFFFFF 100%);
  border-radius: var(--radius-panel);
  padding: 56px 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(43,109,232,.08);
}
.cta-panel::before {
  content: "";
  position: absolute;
  right: 60px; top: -40px;
  width: 180px; height: 180px;
  border: 2px dashed rgba(43,109,232,.08);
  border-radius: 50%;
}
.cta-panel::after {
  content: "";
  position: absolute;
  right: 30px; bottom: -60px;
  width: 140px; height: 140px;
  border: 2px dashed rgba(249,115,22,.1);
  border-radius: 50%;
}
.cta-left { position: relative; z-index: 1; }
.cta-left h2 { font-size: 26px; font-weight: 700; margin-bottom: 10px; color: var(--text-main); line-height: 1.4; }
.cta-left p { font-size: 14px; color: var(--text-sub); }
.cta-right { position: relative; z-index: 1; flex-shrink: 0; }

/* ========== Footer ========== */
.site-footer {
  background: #132033;
  color: #B6C2D4;
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1.1fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}
.footer-brand .logo-icon { background: var(--primary); }
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: #8A97A8;
  max-width: 260px;
}
.footer-links h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}
.footer-links a {
  display: block;
  font-size: 14px;
  color: #B6C2D4;
  padding: 6px 0;
  transition: all var(--transition);
}
.footer-links a:hover { color: #fff; transform: translateX(2px); }
.footer-contact h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}
.footer-contact p {
  font-size: 14px;
  color: #B6C2D4;
  padding: 4px 0;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-contact p i { color: var(--primary); width: 16px; }
.footer-qr {
  margin-top: 16px;
  width: 80px; height: 80px;
  background: #fff;
  border-radius: 10px;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.footer-qr img { width: 100%; height: 100%; object-fit: cover; border-radius: 8px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 13px;
  color: #7B8798;
  flex-wrap: wrap;
}
.footer-bottom .links { display: flex; gap: 20px; }
.footer-bottom .links a { color: #7B8798; transition: color var(--transition); }
.footer-bottom .links a:hover { color: #fff; }

/* ========== Mobile CTA bar ========== */
.mobile-cta-bar {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 12px 16px;
  z-index: 999;
  box-shadow: 0 -4px 20px rgba(19,32,51,.08);
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--border);
}
.mobile-cta-bar .bar-text { font-size: 14px; font-weight: 600; color: var(--text-main); }

/* ========== Responsive ========== */
@media screen and (max-width: 1024px) {
  .desktop-only { display: none !important; }
  .hamburger { display: flex; }
  .header-mobile-cta { display: inline-block; }
  .header-inner { min-height: 64px; }
  .cat-hero { padding: 110px 0 56px; }
  .cat-hero-right { width: 280px; }
  .scene-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .process-grid::before { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .mobile-cta-bar { display: flex; }
  .section, .intro-section, .service-section, .scene-section, .process-section, .faq-section, .cta-section { padding: 64px 0; }
}

@media screen and (max-width: 768px) {
  .grid-container { padding-left: 16px; padding-right: 16px; }
  .logo-text { font-size: 18px; }
  .cat-hero-inner { flex-direction: column; gap: 32px; }
  .cat-hero-right { width: 100%; max-width: 420px; }
  .cat-hero h1 { font-size: 26px; }
  .cat-hero .subtitle { font-size: 15px; }
  .intro-grid { flex-direction: column; gap: 40px; }
  .service-list { grid-template-columns: 1fr; }
  .cta-panel { flex-direction: column; padding: 40px 28px; text-align: center; }
  .cta-right .btn { width: 100%; }
  .faq-q { font-size: 15px; padding: 18px 18px; }
  .faq-a-inner { padding: 0 18px 18px; font-size: 14px; }
  .section-title { font-size: 22px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-brand p { max-width: 100%; }
  .footer-bottom { flex-direction: column; text-align: center; justify-content: center; }
  .footer-bottom .links { justify-content: center; }
  .mobile-cta-bar { padding: 12px 16px; }
  .process-grid { grid-template-columns: 1fr; gap: 24px; }
  .scene-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .scene-card { padding: 20px 16px; }
  .section, .intro-section, .service-section, .scene-section, .process-section, .faq-section, .cta-section { padding: 56px 0; }
}

@media screen and (max-width: 520px) {
  .scene-grid { grid-template-columns: 1fr; }
  .service-list { grid-template-columns: 1fr; }
  .cat-hero { padding: 100px 0 48px; }
  .cat-hero h1 { font-size: 24px; }
  .svc-item { padding: 24px; }
  .mobile-menu { padding: 12px 16px 24px; }
}

/* roulang page: category4 */
/* ===== Design Tokens ===== */
:root {
  --primary: #2B6DE8;
  --primary-dark: #1B4FC4;
  --primary-light: #EBF1FD;
  --accent: #F97316;
  --accent-dark: #EA6A0C;
  --bg: #F4F8FC;
  --card-bg: #FFFFFF;
  --text: #132033;
  --text-secondary: #4A5B72;
  --text-light: #8A97A8;
  --border: rgba(19, 32, 51, .08);
  --border-strong: rgba(19, 32, 51, .14);
  --radius-card: 14px;
  --radius-btn: 10px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --shadow-card: 0 4px 12px rgba(19, 32, 51, .06);
  --shadow-hover: 0 12px 28px rgba(19, 32, 51, .08);
  --shadow-float: 0 20px 40px rgba(19, 32, 51, .12);
  --font-main: "HarmonyOS Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-num: "Inter", "DIN Alternate", "Helvetica Neue", Arial;
  --transition: .25s ease;
  --section-gap: 96px;
  --section-gap-mobile: 60px;
}

/* ===== Reset & Base ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  word-break: break-word;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition);
}

a:hover {
  color: var(--primary);
}

button,
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  border: none;
  background: none;
}

button {
  cursor: pointer;
}

ul,
ol {
  list-style: none;
}

/* ===== Layout ===== */
.grid-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-gap) 0;
}

.section-header {
  margin-bottom: 48px;
}

.section-eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--accent);
  text-transform: none;
  margin-bottom: 8px;
  display: block;
}

.section-title {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  border: 2px solid transparent;
  transition: all var(--transition);
  cursor: pointer;
  text-align: center;
  gap: 8px;
  min-height: 44px;
}

.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(43, 109, 232, .25);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-outline {
  background: #fff;
  color: var(--primary);
  border-color: var(--primary);
}

.btn-outline:hover {
  background: var(--primary-light);
  color: var(--primary);
}

.btn-accent {
  background: var(--accent);
  color: #fff;
}

.btn-accent:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: scale(1.02);
  box-shadow: 0 8px 20px rgba(249, 115, 22, .3);
}

.btn-accent:active {
  transform: scale(.99);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 14px;
  min-height: 40px;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 16px;
}

.btn-block {
  width: 100%;
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .93);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  transition: all var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-card);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  position: relative;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.logo:hover {
  color: var(--text);
}

.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  font-size: 16px;
}

.logo-text {
  font-size: 19px;
  letter-spacing: .02em;
}

.nav-left,
.nav-right {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 0;
  transition: color var(--transition);
}

.nav-link:hover {
  color: var(--primary);
}

.nav-link.active {
  color: var(--primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.header-mobile-cta {
  display: none;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  border: 1px solid var(--primary);
  border-radius: var(--radius-btn);
  padding: 6px 14px;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-btn);
  z-index: 3;
}

.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}

.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
  display: none;
  flex-direction: column;
  background: #fff;
  border-top: 1px solid var(--border);
  padding: 16px 24px 24px;
  gap: 4px;
}

.mobile-menu.open {
  display: flex;
}

.mobile-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.mobile-link:last-of-type {
  border-bottom: none;
}

.mobile-link.active {
  color: var(--primary);
}

.mobile-menu .btn {
  margin-top: 16px;
}

/* ===== Category Hero ===== */
.cat-hero {
  background: linear-gradient(135deg, var(--bg) 0%, #fff 60%);
  padding: 72px 0;
  border-bottom: 1px solid var(--border);
}

.cat-hero .hero-wrap {
  display: flex;
  align-items: center;
  gap: 64px;
}

.cat-hero .hero-left {
  flex: 0 0 55%;
  position: relative;
  padding-left: 24px;
}

.cat-hero .hero-left::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 6px;
  border-radius: 6px;
  background: var(--accent);
}

.cat-hero h1 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--text);
  margin-bottom: 14px;
}

.cat-hero .subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 520px;
}

.cat-hero .hero-tags {
  display: flex;
  gap: 10px;
  margin-top: 24px;
  flex-wrap: wrap;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  font-size: 13px;
  color: var(--text-secondary);
}

.hero-tag i {
  color: var(--primary);
  font-size: 12px;
}

.cat-hero .hero-right {
  flex: 1;
  max-width: 420px;
}

.hero-image-wrap {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-hover);
  aspect-ratio: 4 / 3;
}

.hero-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-image-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(19, 32, 51, .15), transparent 50%);
  pointer-events: none;
}

.hero-float-badge {
  position: absolute;
  background: #fff;
  border-radius: var(--radius-btn);
  box-shadow: var(--shadow-float);
  padding: 12px 18px;
  font-size: 13px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 2;
}

.hero-float-badge .num {
  font-family: var(--font-num);
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
}

.hero-float-badge.b1 {
  bottom: 24px;
  left: -24px;
}

.hero-float-badge.b2 {
  top: 24px;
  right: -18px;
}

/* ===== Intro ===== */
.intro-grid {
  display: flex;
  gap: 64px;
  align-items: center;
}

.intro-text {
  flex: 0 0 55%;
}

.intro-text .section-eyebrow {
  margin-bottom: 12px;
}

.intro-text h2 {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 20px;
}

.intro-text p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.intro-text p strong {
  color: var(--text);
}

.intro-visual {
  flex: 1;
  position: relative;
}

.intro-visual .visual-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border);
}

.intro-visual .visual-card img {
  width: 100%;
  border-radius: 12px;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  margin-bottom: 16px;
}

.intro-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.intro-stat {
  text-align: center;
  padding: 12px 8px;
  background: var(--bg);
  border-radius: var(--radius-btn);
}

.intro-stat .num {
  font-family: var(--font-num);
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
}

.intro-stat .label {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 4px;
}

/* ===== Cooperation Types ===== */
.coop-section {
  background: #fff;
}

.coop-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.coop-card {
  background: var(--bg);
  border-radius: var(--radius-card);
  padding: 32px;
  border: 1px solid var(--border);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.coop-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 0;
  background: var(--accent);
  transition: height .35s ease;
}

.coop-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: rgba(43, 109, 232, .2);
}

.coop-card:hover::before {
  height: 100%;
}

.coop-num {
  font-family: var(--font-num);
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
  color: rgba(43, 109, 232, .2);
  margin-bottom: 16px;
  transition: color var(--transition);
}

.coop-card:hover .coop-num {
  color: var(--accent);
}

.coop-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.coop-card p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.coop-card .coop-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  opacity: 0;
  transform: translateX(-4px);
  transition: all var(--transition);
}

.coop-card:hover .coop-link {
  opacity: 1;
  transform: translateX(0);
}

.coop-card .coop-link i {
  font-size: 12px;
  transition: transform var(--transition);
}

.coop-card .coop-link:hover i {
  transform: translateX(3px);
}

/* ===== Process ===== */
.process-section {
  background: var(--bg);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
  margin-top: 48px;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 32px;
  left: 60px;
  right: 60px;
  height: 2px;
  background: linear-gradient(to right, var(--primary), rgba(43, 109, 232, .15));
  z-index: 0;
}

.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
  padding: 0 12px;
}

.step-num-circle {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-num);
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 16px;
  box-shadow: 0 0 0 6px rgba(255, 255, 255, 1);
  position: relative;
  transition: all var(--transition);
}

.process-step:hover .step-num-circle {
  background: var(--primary);
  color: #fff;
  transform: scale(1.06);
}

.process-step h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.process-step p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 200px;
  margin: 0 auto;
}

/* ===== Cases ===== */
.cases-section {
  background: #fff;
}

.case-main {
  display: flex;
  background: var(--bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 24px;
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.case-main:hover {
  box-shadow: var(--shadow-hover);
}

.case-main .case-img {
  flex: 0 0 50%;
  min-height: 280px;
}

.case-main .case-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-main .case-body {
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex: 1;
}

.case-main .case-body h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.case-main .case-body p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.case-metrics {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}

.case-metric .num {
  font-family: var(--font-num);
  font-size: 24px;
  font-weight: 700;
  color: var(--accent);
}

.case-metric .label {
  font-size: 12px;
  color: var(--text-light);
}

.case-sub-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.case-sub {
  background: var(--bg);
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.case-sub:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.case-sub .case-img {
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.case-sub .case-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}

.case-sub:hover .case-img img {
  transform: scale(1.03);
}

.case-sub .case-body {
  padding: 20px;
}

.case-sub .case-body h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.case-sub .case-body p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--bg);
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: #fff;
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow var(--transition);
}

.faq-item.active {
  box-shadow: var(--shadow-card);
  border-color: rgba(43, 109, 232, .2);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  transition: color var(--transition);
  min-height: 44px;
}

.faq-question:hover {
  color: var(--primary);
}

.faq-icon {
  width: 32px;
  height: 32px;
  min-width: 32px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--text-secondary);
  transition: all var(--transition);
  font-style: normal;
  line-height: 1;
}

.faq-item.active .faq-icon {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* ===== CTA ===== */
.cta-section {
  padding: 80px 0;
}

.cta-panel {
  background: linear-gradient(135deg, var(--bg) 0%, #fff 80%);
  border-radius: var(--radius-lg);
  padding: 48px;
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
  display: flex;
  gap: 48px;
  align-items: center;
}

.cta-panel::before {
  content: '';
  position: absolute;
  right: -60px;
  bottom: -60px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  border: 2px solid rgba(43, 109, 232, .1);
}

.cta-panel::after {
  content: '';
  position: absolute;
  right: 10px;
  bottom: 10px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  border: 2px solid rgba(249, 115, 22, .12);
}

.cta-text {
  flex: 0 0 38%;
}

.cta-text h2 {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 10px;
}

.cta-text p {
  font-size: 14px;
  color: var(--text-secondary);
}

.cta-form-wrap {
  flex: 1;
  background: #fff;
  border-radius: var(--radius-card);
  padding: 28px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border);
  position: relative;
  z-index: 1;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 14px;
  color: var(--text);
  margin-bottom: 6px;
  font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid rgba(19, 32, 51, .12);
  border-radius: var(--radius-btn);
  font-size: 16px;
  color: var(--text);
  background: #fff;
  transition: all var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(43, 109, 232, .15);
}

.form-group input::placeholder {
  color: var(--text-light);
}

.form-options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 6px;
}

.form-options label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 400;
  color: var(--text-secondary);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  cursor: pointer;
  transition: all var(--transition);
}

.form-options input[type="checkbox"] {
  accent-color: var(--primary);
  width: 14px;
  height: 14px;
}

.form-options label:has(input:checked) {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
}

/* ===== Footer ===== */
.site-footer {
  background: #132033;
  color: #B6C2D4;
  padding-top: 64px;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-brand .footer-logo {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}

.footer-brand p {
  line-height: 1.7;
  font-size: 14px;
  color: #8b9bb0;
}

.footer-links h4,
.footer-contact h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-links a,
.footer-contact p {
  display: block;
  color: #8b9bb0;
  margin-bottom: 10px;
  line-height: 1.6;
  transition: all var(--transition);
}

.footer-links a:hover {
  color: #fff;
  transform: translateX(2px);
}

.footer-contact p i {
  margin-right: 8px;
  color: var(--primary);
  width: 16px;
  text-align: center;
}

.footer-qr {
  width: 80px;
  height: 80px;
  background: #fff;
  border-radius: 6px;
  padding: 4px;
  margin-top: 12px;
}

.footer-qr img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(182, 194, 212, .1);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: #6c7a8e;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-bottom .links {
  display: flex;
  gap: 20px;
}

.footer-bottom .links a {
  color: #6c7a8e;
  transition: color var(--transition);
}

.footer-bottom .links a:hover {
  color: #fff;
}

/* ===== Mobile Floating CTA ===== */
.mobile-float-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--border);
  padding: 10px 16px;
  justify-content: space-between;
  align-items: center;
  z-index: 99;
  box-shadow: 0 -4px 16px rgba(19, 32, 51, .06);
}

.mobile-float-cta .tip {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

.mobile-float-cta .btn {
  padding: 8px 20px;
  font-size: 14px;
  min-height: 40px;
}

/* ===== Focus & Accessibility ===== */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .desktop-only {
    display: none !important;
  }

  .hamburger {
    display: flex;
  }

  .header-mobile-cta {
    display: inline-flex;
    position: absolute;
    right: 56px;
    top: 50%;
    transform: translateY(-50%);
  }

  .header-inner {
    justify-content: space-between;
  }

  .logo {
    position: static;
    transform: none;
  }

  .mobile-menu {
    display: none;
  }

  .mobile-menu.open {
    display: flex;
  }

  .cat-hero .hero-wrap {
    gap: 32px;
  }

  .cat-hero .hero-left {
    flex-basis: 50%;
  }

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .process-steps::before {
    display: none;
  }

  .intro-grid {
    gap: 40px;
  }

  .cta-panel {
    flex-direction: column;
    padding: 32px;
  }

  .cta-text {
    flex: none;
    text-align: center;
  }

  .cta-form-wrap {
    width: 100%;
  }
}

@media (max-width: 768px) {
  :root {
    --section-gap: 60px;
  }

  .grid-container {
    padding: 0 16px;
  }

  .section-header {
    margin-bottom: 28px;
  }

  .cat-hero {
    padding: 48px 0 56px;
  }

  .cat-hero .hero-wrap {
    flex-direction: column;
  }

  .cat-hero .hero-left {
    flex-basis: auto;
    width: 100%;
  }

  .cat-hero h1 {
    font-size: 26px;
  }

  .cat-hero .hero-right {
    width: 100%;
    max-width: 100%;
  }

  .hero-image-wrap {
    aspect-ratio: 16 / 10;
  }

  .hero-float-badge.b1 {
    left: 12px;
    bottom: 12px;
  }

  .hero-float-badge.b2 {
    right: 12px;
    top: 12px;
  }

  .intro-grid {
    flex-direction: column-reverse;
  }

  .intro-text {
    flex: none;
    width: 100%;
  }

  .intro-visual {
    width: 100%;
  }

  .coop-grid {
    grid-template-columns: 1fr;
  }

  .process-steps {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .process-step {
    display: flex;
    align-items: center;
    text-align: left;
    gap: 16px;
    padding: 12px 0;
  }

  .process-step .step-num-circle {
    margin-bottom: 0;
    min-width: 56px;
    width: 56px;
    height: 56px;
    font-size: 17px;
  }

  .process-step h3 {
    margin-bottom: 2px;
  }

  .process-step p {
    text-align: left;
    margin: 0;
  }

  .case-main {
    flex-direction: column;
  }

  .case-main .case-img {
    flex: none;
    min-height: 200px;
  }

  .case-sub-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .mobile-float-cta {
    display: flex;
  }

  .cta-panel {
    padding: 24px;
    border-radius: var(--radius-card);
  }

  .cta-form-wrap {
    padding: 20px;
  }

  .section-eyebrow {
    font-size: 12px;
  }

  .section-title {
    font-size: 22px;
  }
}

@media (max-width: 520px) {
  .case-main .case-body {
    padding: 20px;
  }

  .case-metrics {
    gap: 16px;
  }

  .case-metric .num {
    font-size: 20px;
  }

  .coop-card {
    padding: 24px;
  }

  .faq-question {
    padding: 16px 18px;
    font-size: 15px;
  }

  .faq-answer-inner {
    padding: 0 18px 16px;
    font-size: 14px;
  }
}