/* roulang page: index */
:root{
  --bg:#F6F4F0;
  --bg-soft:#ECE9F1;
  --ink-space:#14122B;
  --brand:#4A3AB5;
  --brand-deep:#2A1F6E;
  --accent:#1F9E96;
  --spark:#F0873C;
  --text:#1D1B2E;
  --text-muted:#5B5870;
  --line:#DCD7E4;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-img:12px;
  --sh-1:0 2px 8px rgba(29,27,46,.06);
  --sh-2:0 10px 28px rgba(29,27,46,.12);
  --s1:8px; --s2:12px; --s3:16px; --s4:24px; --s5:32px; --s6:48px; --s7:64px; --s8:88px;

  --bs-body-bg:#F6F4F0;
  --bs-body-color:#1D1B2E;
  --bs-body-font-size:17px;
  --bs-border-color:#DCD7E4;
  --bs-border-radius:10px;
  --bs-link-color:#4A3AB5;
  --bs-link-hover-color:#2A1F6E;
  --bs-primary:#4A3AB5;
  --bs-primary-rgb:74,58,181;
  --bs-font-sans-serif:"PingFang SC","Source Han Sans SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--bs-font-sans-serif);
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--brand);text-decoration:none;text-underline-offset:3px;transition:color .18s ease;}
a:hover{color:var(--brand-deep);}
img{max-width:100%;display:block;}
button,input{font-family:inherit;}
h1,h2,h3,h4,h5{color:var(--text);margin:0 0 var(--s3);font-weight:600;}
h1{font-size:38px;line-height:1.30;letter-spacing:.01em;}
h2{font-size:27px;line-height:1.35;}
h3{font-size:19px;line-height:1.45;}
p{margin:0 0 1.1em;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.container,.container-lg,.container-xl{max-width:1200px;padding-left:24px;padding-right:24px;}
@media (min-width:1400px){.container,.container-xl{max-width:1280px;}}
.section{padding:80px 0;}
.section-sm{padding:56px 0;}
.section-head{margin-bottom:var(--s5);}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-muted);letter-spacing:.08em;margin-bottom:10px;}
.section-head .eyebrow::before{content:"";width:10px;height:10px;border-radius:3px;background:var(--accent);display:inline-block;}
.section-head p.lead-text{font-size:15px;line-height:1.7;color:var(--text-muted);max-width:760px;margin:0;}
.text-muted-2{color:var(--text-muted);font-size:14px;line-height:1.6;}

/* ============ header ============ */
.site-header{position:sticky;top:0;z-index:1030;background:rgba(246,244,240,.94);border-bottom:1px solid transparent;transition:box-shadow .22s ease,border-color .22s ease;}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 4px 16px rgba(29,27,46,.07);}
.nav-inner{display:flex;align-items:center;gap:20px;min-height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(140deg,var(--brand),var(--brand-deep));display:flex;align-items:center;justify-content:center;color:#fff;font-size:15px;font-weight:600;letter-spacing:.02em;box-shadow:var(--sh-1);}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:17px;font-weight:600;color:var(--text);letter-spacing:.01em;}
.brand-sub{font-size:11px;color:var(--text-muted);letter-spacing:.16em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.main-nav a{position:relative;display:block;padding:9px 14px;border-radius:9px;font-size:15px;color:var(--text);transition:background .18s ease,color .18s ease;}
.main-nav a:hover{background:var(--bg-soft);color:var(--brand-deep);}
.main-nav a.is-active{color:var(--brand);font-weight:600;}
.main-nav a.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;background:var(--spark);}
.nav-tools{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.icon-btn{width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--text);display:inline-flex;align-items:center;justify-content:center;font-size:17px;transition:border-color .18s ease,color .18s ease,box-shadow .18s ease;}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);box-shadow:var(--sh-1);}
.btn-brand{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:42px;padding:0 20px;border-radius:var(--r-btn);border:1px solid var(--brand);background:var(--brand);color:#fff;font-size:15px;font-weight:500;cursor:pointer;transition:background .18s ease,transform .18s ease,box-shadow .18s ease;}
.btn-brand:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(42,31,110,.24);}
.btn-brand:active{transform:translateY(0);}
.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:42px;padding:0 20px;border-radius:var(--r-btn);border:1px solid var(--brand);background:transparent;color:var(--brand);font-size:15px;cursor:pointer;transition:background .18s ease,color .18s ease,transform .18s ease;}
.btn-ghost:hover{background:rgba(74,58,181,.08);color:var(--brand-deep);transform:translateY(-1px);}
.btn-soft{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:38px;padding:0 16px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--text);font-size:14px;cursor:pointer;transition:background .18s ease,border-color .18s ease,color .18s ease;}
.btn-soft:hover{background:var(--bg-soft);border-color:var(--brand);color:var(--brand);}
.btn-soft.is-on{background:var(--brand);border-color:var(--brand);color:#fff;}
.btn-soft.is-on .bi{color:#F0873C;}
.btn-spark{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 24px;border-radius:var(--r-btn);border:1px solid var(--spark);background:var(--spark);color:var(--ink-space);font-size:16px;font-weight:600;cursor:pointer;box-shadow:0 8px 22px rgba(0,0,0,.28);transition:transform .18s ease,filter .18s ease;}
.btn-spark:hover{transform:translateY(-1px);filter:brightness(.95);color:var(--ink-space);}
.btn-lg-2{height:48px;padding:0 26px;font-size:16px;}
.search-strip{border-top:1px solid var(--line);background:#fff;padding:14px 0;}
.search-strip form{display:flex;gap:10px;max-width:640px;}
.search-strip input{flex:1;height:46px;border:1px solid var(--line);border-radius:var(--r-input);padding:0 16px;font-size:15px;color:var(--text);background:#fff;}
.search-strip input::placeholder{color:var(--text-muted);}
.search-strip input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(74,58,181,.16);}
.nav-toggle{display:none;}
.offcanvas{background:var(--bg);}
.offcanvas-header{border-bottom:1px solid var(--line);}
.oc-nav a{display:flex;align-items:center;justify-content:space-between;padding:14px 4px;border-bottom:1px solid var(--line);font-size:16px;color:var(--text);}
.oc-nav a:hover{color:var(--brand);}
.oc-nav a.is-active{color:var(--brand);font-weight:600;}
.oc-foot{margin-top:auto;padding:20px 0 8px;}

/* ============ hero ============ */
.hero{position:relative;overflow:hidden;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;color:#fff;}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,18,43,.86) 0%,rgba(20,18,43,.80) 60%,rgba(20,18,43,.88) 100%);}
.hero::after{content:"";position:absolute;inset:0;opacity:.9;pointer-events:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Ccircle cx='12' cy='16' r='1' fill='%23ffffff' opacity='0.10'/%3E%3Ccircle cx='66' cy='44' r='1' fill='%23ffffff' opacity='0.07'/%3E%3Ccircle cx='104' cy='92' r='1' fill='%23ffffff' opacity='0.10'/%3E%3Ccircle cx='34' cy='108' r='1' fill='%23ffffff' opacity='0.06'/%3E%3Ccircle cx='126' cy='30' r='1' fill='%23ffffff' opacity='0.08'/%3E%3C/svg%3E");}
.hero-inner{position:relative;z-index:2;padding:104px 0 92px;max-width:820px;}
.hero .badge-line{display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;border-radius:999px;border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.07);font-size:13px;color:rgba(255,255,255,.86);margin-bottom:20px;}
.hero h1{color:#fff;font-size:38px;margin-bottom:18px;}
.hero p.sub{font-size:17px;line-height:1.85;color:rgba(255,255,255,.82);max-width:640px;margin-bottom:28px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:20px;}
.hero-note{font-size:13px;line-height:1.7;color:rgba(255,255,255,.62);}
.hero-note span{display:block;}

/* ============ quick entries ============ */
.quick-bar{background:#fff;border-bottom:1px solid var(--line);}
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;}
.quick-item{display:flex;gap:14px;align-items:flex-start;padding:26px 22px;border-right:1px solid var(--line);transition:background .18s ease;}
.quick-item:last-child{border-right:none;}
.quick-item:hover{background:var(--bg-soft);}
.quick-item .qi-icon{width:42px;height:42px;flex-shrink:0;border-radius:12px;background:var(--bg-soft);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:19px;}
.quick-item .qi-title{font-size:16px;font-weight:600;color:var(--text);margin-bottom:4px;}
.quick-item .qi-desc{font-size:13px;line-height:1.6;color:var(--text-muted);}

/* ============ cards ============ */
.col-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.c-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.c-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#CFC8DB;}
.c-card .cover{position:relative;aspect-ratio:4/3;overflow:hidden;}
.c-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.c-card:hover .cover img{transform:scale(1.03);}
.c-card .c-body{padding:22px;display:flex;flex-direction:column;flex:1;}
.c-card h3{font-size:18px;margin-bottom:10px;}
.c-card p{font-size:15px;line-height:1.7;color:var(--text-muted);margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.c-card .c-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;}
.c-card .c-foot .link-more{font-size:15px;color:var(--brand);font-weight:500;}
.c-card-feature{grid-column:span 2;flex-direction:row;}
.c-card-feature .cover{aspect-ratio:auto;width:46%;flex-shrink:0;}
.c-card-feature .cover img{height:100%;}
.c-card-feature .c-body{justify-content:center;}
.badge-soft{display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;background:var(--bg-soft);color:var(--text);font-size:12.5px;line-height:1;}
.badge-accent{display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;background:rgba(31,158,150,.12);color:#157F79;font-size:12.5px;line-height:1;}
.badge-spark{display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;background:rgba(240,135,60,.16);color:#B65B14;font-size:12.5px;line-height:1;}

/* ============ featured rows ============ */
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.f-row{display:flex;gap:20px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:18px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease;}
.f-row:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.f-row .f-cover{width:42%;flex-shrink:0;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);aspect-ratio:4/3;}
.f-row .f-cover img{width:100%;height:100%;object-fit:cover;}
.f-row .f-body{display:flex;flex-direction:column;}
.f-row h3{font-size:17px;margin-bottom:8px;}
.f-row p{font-size:14.5px;line-height:1.7;color:var(--text-muted);margin-bottom:12px;}
.f-row .f-meta{margin-top:auto;font-size:13.5px;color:var(--text-muted);display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.dot-sep::before{content:"·";margin-right:8px;color:var(--line);}

/* ============ news list ============ */
.news-panel{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);}
.news-item{display:block;padding:22px 24px;border-bottom:1px solid var(--line);transition:background .18s ease;}
.news-item:last-child{border-bottom:none;}
.news-item:hover{background:var(--bg-soft);}
.news-item .ni-top{display:flex;align-items:center;gap:10px;margin-bottom:8px;flex-wrap:wrap;}
.news-item h3{font-size:17px;margin:0 0 6px;}
.news-item h3 a{color:var(--text);}
.news-item h3 a:hover{color:var(--brand);}
.news-item .ni-sum{font-size:14.5px;line-height:1.7;color:var(--text-muted);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-item .ni-foot{margin-top:10px;display:flex;align-items:center;justify-content:space-between;font-size:13.5px;color:var(--text-muted);}
.empty-state{min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;padding:32px;}
.empty-state .bi{font-size:48px;color:var(--text-muted);line-height:1;}
.empty-state p{font-size:15px;color:var(--text-muted);margin:0;}

/* ============ login block ============ */
.login-block{position:relative;background:var(--ink-space);color:#fff;overflow:hidden;}
.login-block::after{content:"";position:absolute;inset:0;pointer-events:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='150' height='150'%3E%3Ccircle cx='18' cy='24' r='1' fill='%23ffffff' opacity='0.10'/%3E%3Ccircle cx='84' cy='58' r='1' fill='%23ffffff' opacity='0.07'/%3E%3Ccircle cx='120' cy='116' r='1' fill='%23ffffff' opacity='0.09'/%3E%3Ccircle cx='46' cy='128' r='1' fill='%23ffffff' opacity='0.06'/%3E%3C/svg%3E");}
.login-block .container{position:relative;z-index:2;}
.login-block h2{color:#fff;}
.login-block p.intro{color:rgba(255,255,255,.72);font-size:15px;line-height:1.8;max-width:520px;}
.step-list{list-style:none;padding:0;margin:26px 0 0;}
.step-list li{display:flex;gap:14px;padding:14px 0;border-top:1px solid rgba(255,255,255,.12);}
.step-list li:first-child{border-top:none;}
.step-list .st-num{width:12px;height:12px;border-radius:50%;background:var(--spark);margin-top:8px;flex-shrink:0;box-shadow:0 0 0 4px rgba(240,135,60,.16);}
.step-list .st-title{font-size:16px;font-weight:600;color:#fff;margin-bottom:4px;}
.step-list .st-desc{font-size:14px;line-height:1.7;color:rgba(255,255,255,.7);}
.login-panel{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);border-radius:var(--r-card);padding:26px;backdrop-filter:none;}
.login-panel .lp-head{font-size:16px;font-weight:600;color:#fff;margin-bottom:4px;}
.login-panel .lp-sub{font-size:13px;color:rgba(255,255,255,.6);margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;color:rgba(255,255,255,.78);margin-bottom:7px;}
.field input[type="text"],.field input[type="password"]{width:100%;height:46px;border-radius:var(--r-input);border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.06);color:#fff;padding:0 16px;font-size:15px;transition:border-color .18s ease,box-shadow .18s ease;}
.field input::placeholder{color:rgba(255,255,255,.42);}
.field input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(31,158,150,.22);}
.check-row{display:flex;align-items:center;gap:9px;font-size:14px;color:rgba(255,255,255,.72);margin:4px 0 20px;}
.check-row input{width:16px;height:16px;accent-color:var(--accent);}
.login-panel .lp-help{margin-top:16px;display:flex;gap:14px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.6);}
.login-panel .lp-help a{color:rgba(255,255,255,.78);text-decoration:underline;text-underline-offset:4px;}
.login-panel .lp-help a:hover{color:#fff;}
.login-block .safety-note{margin-top:34px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);font-size:13px;line-height:1.7;color:rgba(255,255,255,.58);}

/* ============ faq ============ */
.faq-wrap{max-width:900px;}
.accordion-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card)!important;margin-bottom:14px;overflow:hidden;}
.accordion-button{background:#fff;color:var(--text);font-size:16px;font-weight:600;padding:20px 22px;box-shadow:none!important;border-radius:var(--r-card)!important;}
.accordion-button:not(.collapsed){color:var(--brand);background:#fff;}
.accordion-button:focus{box-shadow:none;border-color:var(--brand);}
.accordion-button::after{background-image:none;content:"+";font-size:22px;line-height:1;width:24px;height:24px;display:flex;align-items:center;justify-content:center;color:var(--text-muted);transform:none;transition:transform .22s ease,color .22s ease;margin-left:16px;}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--brand);}
.accordion-body{padding:0 22px 22px;font-size:15px;line-height:1.8;color:var(--text-muted);border-left:3px solid var(--brand);margin-left:22px;padding-left:18px;}

/* ============ small cards ============ */
.mini-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.mini-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:18px;display:flex;gap:14px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease;}
.mini-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.mini-card .m-thumb{width:64px;height:64px;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);flex-shrink:0;}
.mini-card .m-thumb img{width:100%;height:100%;object-fit:cover;}
.mini-card h3{font-size:15.5px;margin:8px 0 0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* ============ cta strip ============ */
.cta-strip{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;padding:34px 0;}
.cta-inner h2{font-size:23px;margin-bottom:6px;}
.cta-inner p{margin:0;font-size:15px;color:var(--text-muted);}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ footer ============ */
.site-footer{background:var(--ink-space);color:rgba(255,255,255,.7);padding:64px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em;}
.site-footer a{color:rgba(255,255,255,.7);font-size:14.5px;display:block;padding:6px 0;}
.site-footer a:hover{color:#fff;}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.f-brand .brand-mark{background:linear-gradient(140deg,var(--brand),var(--accent));}
.f-brand .brand-name{color:#fff;font-size:17px;font-weight:600;}
.f-desc{font-size:14px;line-height:1.75;color:rgba(255,255,255,.6);max-width:320px;}
.f-contact li{list-style:none;font-size:14.5px;padding:6px 0;color:rgba(255,255,255,.7);}
.f-contact{padding:0;margin:0;}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;color:rgba(255,255,255,.5);}
.footer-toggle{display:none;}

/* ============ mobile tab ============ */
.mobile-tab{display:none;}
@media (max-width:991.98px){
  .main-nav,.nav-tools .btn-brand,.nav-tools .icon-btn{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .mobile-tab{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:1040;background:#fff;border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom);box-shadow:0 -4px 16px rgba(29,27,46,.08);}
  .mobile-tab a{flex:1;height:56px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;font-size:10px;color:var(--text-muted);position:relative;}
  .mobile-tab a .bi{font-size:19px;}
  .mobile-tab a.is-active{color:var(--brand);}
  .mobile-tab a.is-active::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:26px;height:2px;background:var(--spark);border-radius:2px;}
  body{padding-bottom:72px;}
  .hero-inner{padding:64px 0 56px;}
  h1,.hero h1{font-size:27px;}
  h2{font-size:22px;}
  .section{padding:56px 0;}
  .section-sm{padding:44px 0;}
  .quick-grid{grid-template-columns:repeat(2,1fr);}
  .quick-item{border-right:none;border-bottom:1px solid var(--line);}
  .quick-item:nth-child(odd){border-right:1px solid var(--line);}
  .col-grid{grid-template-columns:repeat(2,1fr);}
  .c-card-feature{grid-column:span 2;flex-direction:row;}
  .feature-grid{grid-template-columns:1fr;}
  .mini-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:24px;}
}
@media (max-width:767.98px){
  .col-grid{grid-template-columns:1fr;}
  .c-card-feature{grid-column:span 1;flex-direction:column;}
  .c-card-feature .cover{width:100%;aspect-ratio:16/9;}
  .f-row{flex-direction:column;}
  .f-row .f-cover{width:100%;}
  .mini-grid{grid-template-columns:1fr;}
  .hero p.sub{font-size:16px;}
  .hero-actions .btn-brand,.hero-actions .btn-ghost{width:100%;}
  .cta-inner{padding:28px 0;}
  .cta-actions{width:100%;}
  .cta-actions .btn-soft{flex:1;}
  .quick-item{padding:22px 18px;}
}
@media (max-width:575.98px){
  .container,.container-lg,.container-xl{padding-left:16px;padding-right:16px;}
  h1,.hero h1{font-size:26px;}
  h2{font-size:21px;}
  .hero{min-height:auto;}
  .quick-grid{grid-template-columns:1fr;}
  .quick-item:nth-child(odd){border-right:none;}
  .footer-grid{grid-template-columns:1fr;}
  .brand-sub{display:none;}
}

/* roulang page: article */
:root{
  --bg:#F6F4F0;
  --bg-soft:#ECE9F1;
  --ink-space:#14122B;
  --brand:#4A3AB5;
  --brand-deep:#2A1F6E;
  --accent:#1F9E96;
  --spark:#F0873C;
  --text:#1D1B2E;
  --text-muted:#5B5870;
  --line:#DCD7E4;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 2px 8px rgba(29,27,46,.06);
  --shadow-2:0 10px 28px rgba(29,27,46,.12);
  --sp-1:8px; --sp-2:12px; --sp-3:16px; --sp-4:24px; --sp-5:32px; --sp-6:48px; --sp-7:64px; --sp-8:88px;
  --font-cn:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB","Heiti SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.7;
  padding-bottom:0;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease;}
a:hover{color:var(--brand-deep);}
button,input{font-family:inherit;}
h1,h2,h3,h4,h5{color:var(--text);font-weight:600;letter-spacing:.01em;margin:0;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.bg-soft-block{background:var(--bg-soft);}
.bg-dark-block{background:var(--ink-space);color:#fff;position:relative;}
.bg-dark-block::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.35) 1px,transparent 1px);
  background-size:22px 22px;opacity:.07;pointer-events:none;
}
.bg-dark-block > *{position:relative;z-index:1;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(246,244,240,.95);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 4px 18px rgba(29,27,46,.08);}
.header-inner{
  display:flex;align-items:center;gap:var(--sp-5);
  min-height:72px;
}
.brand{
  display:flex;align-items:center;gap:10px;
  color:var(--text);font-size:17px;font-weight:600;white-space:nowrap;
}
.brand:hover{color:var(--brand);}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  background:var(--ink-space);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:600;flex:0 0 36px;
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;right:-3px;bottom:-3px;width:10px;height:10px;border-radius:3px;background:var(--spark);
}
.brand-name{letter-spacing:.02em;}
.main-nav{
  display:flex;align-items:center;gap:var(--sp-2);
  margin-left:auto;flex-wrap:nowrap;
}
.main-nav a{
  padding:8px 12px;border-radius:999px;font-size:15px;color:var(--text-muted);white-space:nowrap;
}
.main-nav a:hover{background:var(--bg-soft);color:var(--brand);}
.main-nav a.is-active{color:var(--brand);background:rgba(74,58,181,.09);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:var(--sp-2);}
.btn-nav-login{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand);color:#fff;border-radius:var(--radius-btn);
  padding:10px 18px;font-size:15px;font-weight:600;
  box-shadow:0 2px 8px rgba(74,58,181,.24);
}
.btn-nav-login:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:transparent;color:var(--text-muted);
  display:inline-flex;align-items:center;justify-content:center;font-size:17px;
}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);background:rgba(74,58,181,.06);}
.nav-toggle{display:none;}
.offcanvas{background:var(--bg);}
.offcanvas-header{border-bottom:1px solid var(--line);}
.oc-nav{display:flex;flex-direction:column;gap:6px;padding:var(--sp-4) 0;}
.oc-nav a{
  padding:12px 14px;border-radius:10px;color:var(--text);font-size:16px;
  display:flex;align-items:center;justify-content:space-between;
}
.oc-nav a:hover,.oc-nav a.is-active{background:var(--bg-soft);color:var(--brand);}

/* ---------- mobile bottom tab ---------- */
.mobile-tabs{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;
  display:none;
  background:rgba(246,244,240,.98);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tabs a{
  flex:1;height:56px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  font-size:10px;color:var(--text-muted);position:relative;
}
.mobile-tabs a i{font-size:19px;}
.mobile-tabs a.is-active{color:var(--brand);}
.mobile-tabs a.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;background:var(--spark);border-radius:2px;
}

/* ---------- reading progress ---------- */
.read-progress{
  position:fixed;top:0;left:0;height:2px;width:0;background:var(--brand);z-index:1050;transition:width .1s linear;
}

/* ---------- breadcrumb + article head ---------- */
.article-hero{
  background:var(--ink-space);
  color:#fff;
  position:relative;
  padding:var(--sp-7) 0 var(--sp-6);
  background-image:linear-gradient(rgba(20,18,43,.86),rgba(20,18,43,.9)),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.4) 1px,transparent 1px);
  background-size:24px 24px;opacity:.08;pointer-events:none;
}
.article-hero .container{position:relative;z-index:1;}
.breadcrumb-line{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:rgba(255,255,255,.66);margin-bottom:var(--sp-4);
}
.breadcrumb-line a{color:rgba(255,255,255,.8);}
.breadcrumb-line a:hover{color:#fff;}
.breadcrumb-line .sep{opacity:.5;}
.breadcrumb-line .current{color:rgba(255,255,255,.55);}
.hero-cat{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  background:rgba(31,158,150,.18);color:#7FE3DC;font-size:12.5px;letter-spacing:.02em;
  border:1px solid rgba(31,158,150,.35);
}
.article-hero h1{
  color:#fff;font-size:38px;line-height:1.3;margin:var(--sp-4) 0 var(--sp-3);max-width:900px;
}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:14px;color:rgba(255,255,255,.68);
}
.hero-meta .dot{opacity:.5;}
.hero-meta i{font-size:15px;margin-right:4px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:var(--sp-4);}
.hero-tags span{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  border:1px solid rgba(255,255,255,.24);font-size:12.5px;color:rgba(255,255,255,.82);
}

/* ---------- layout ---------- */
.article-wrap{padding:var(--sp-7) 0 var(--sp-8);}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:var(--sp-6);
  align-items:start;
}
.article-panel{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:40px 44px;
}

/* ---------- article body ---------- */
.article-body{max-width:760px;font-size:17px;line-height:1.9;color:var(--text);}
.article-body p{margin-bottom:1.4em;}
.article-body h2{
  font-size:24px;line-height:1.4;margin:40px 0 16px;padding-left:14px;position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--brand);
}
.article-body h3{font-size:19px;margin:28px 0 12px;}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:22px;}
.article-body ul li{list-style:none;position:relative;margin-bottom:.6em;padding-left:14px;}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--accent);
}
.article-body ol{list-style:decimal;}
.article-body ol li{margin-bottom:.6em;}
.article-body blockquote{
  margin:0 0 1.6em;padding:18px 22px;background:var(--bg-soft);
  border-left:3px solid var(--accent);border-radius:0 12px 12px 0;color:var(--text-muted);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--radius-img);border:1px solid var(--line);margin:var(--sp-4) 0;}
.article-body figure{margin:var(--sp-5) 0;}
.article-body figcaption{font-size:13px;color:var(--text-muted);text-align:center;margin-top:10px;}
.article-body a{text-decoration:underline;text-underline-offset:3px;}
.article-body table{
  width:100%;border-collapse:collapse;margin:0 0 1.6em;font-size:15px;border:1px solid var(--line);
  border-radius:12px;overflow:hidden;
}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:12px 14px;text-align:left;}
.article-body th{background:var(--bg-soft);font-weight:600;}
.article-body code{
  background:#EFEDF4;border-radius:6px;padding:2px 6px;font-size:14px;
}
.article-body pre{
  background:#F1EFF6;border-radius:12px;padding:18px;overflow:auto;font-size:14px;line-height:1.7;
}
.empty-state{
  text-align:center;padding:var(--sp-8) var(--sp-4);min-height:260px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
}
.empty-state i{font-size:48px;color:var(--text-muted);}
.empty-state p{font-size:15px;color:var(--text-muted);}

/* ---------- sidebar ---------- */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:var(--sp-4);}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);padding:22px;
}
.side-card h3{font-size:16px;margin-bottom:var(--sp-3);display:flex;align-items:center;gap:8px;}
.side-card h3::before{content:"";width:10px;height:10px;border-radius:3px;background:var(--brand);}
.toc-list{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--line);}
.toc-list a{
  display:block;padding:7px 0 7px 14px;font-size:14.5px;color:var(--text-muted);
  border-left:2px solid transparent;margin-left:-1px;line-height:1.5;
}
.toc-list a:hover{color:var(--brand);}
.toc-list a.is-current{color:var(--brand);border-left-color:var(--brand);font-weight:600;}
.mini-item{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);}
.mini-item:last-child{border-bottom:0;padding-bottom:0;}
.mini-item:first-child{padding-top:0;}
.mini-thumb{
  width:56px;height:56px;flex:0 0 56px;border-radius:10px;overflow:hidden;border:1px solid var(--line);
}
.mini-thumb img{width:100%;height:100%;object-fit:cover;}
.mini-item h4{font-size:14.5px;line-height:1.5;margin-bottom:4px;}
.mini-item h4 a{color:var(--text);}
.mini-item h4 a:hover{color:var(--brand);}
.mini-item .mini-meta{font-size:12.5px;color:var(--text-muted);}

/* ---------- footer of article ---------- */
.article-foot{margin-top:var(--sp-6);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:var(--sp-4);}
.tag-pill{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;
  border:1px solid var(--line);font-size:13px;color:var(--text-muted);background:#fff;
}
.tag-pill:hover{border-color:var(--brand);color:var(--brand);}
.share-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding:var(--sp-3) 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.share-row .label{font-size:14px;color:var(--text-muted);margin-right:6px;}
.chip-btn{
  display:inline-flex;align-items:center;gap:6px;height:38px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);background:transparent;color:var(--text);font-size:14px;
  transition:all .18s ease;
}
.chip-btn:hover{background:var(--bg-soft);border-color:var(--line);color:var(--brand);}
.chip-btn.is-on{background:rgba(74,58,181,.1);border-color:var(--brand);color:var(--brand);}
.chip-btn.is-on i{color:var(--spark);}

.prevnext{
  display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-4);margin-top:var(--sp-5);
}
.pn-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px 22px;box-shadow:var(--shadow-1);transition:all .2s ease;
}
.pn-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#CFC8DC;}
.pn-card .pn-label{font-size:13px;color:var(--text-muted);display:flex;align-items:center;gap:6px;margin-bottom:8px;}
.pn-card h4{font-size:16.5px;line-height:1.5;color:var(--text);}
.pn-card .pn-cat{font-size:12.5px;color:var(--accent);margin-top:8px;display:inline-block;}

.rec-title{
  font-size:22px;margin:var(--sp-7) 0 var(--sp-4);display:flex;align-items:center;gap:12px;
}
.rec-title::before{content:"";width:12px;height:12px;border-radius:3px;background:var(--brand);}
.rec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--sp-4);}
.rec-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);transition:all .2s ease;display:flex;flex-direction:column;
}
.rec-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.rec-cover{aspect-ratio:1/1;overflow:hidden;background:var(--bg-soft);}
.rec-cover img{width:100%;height:100%;object-fit:cover;}
.rec-body{padding:18px;display:flex;flex-direction:column;gap:8px;flex:1;}
.badge-cat{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:var(--bg-soft);color:var(--text);font-size:12.5px;width:fit-content;
}
.rec-body h3{font-size:16.5px;line-height:1.5;}
.rec-body h3 a{color:var(--text);}
.rec-body h3 a:hover{color:var(--brand);}
.rec-body .rec-meta{font-size:12.5px;color:var(--text-muted);margin-top:auto;}

.back-cta{
  margin-top:var(--sp-6);background:var(--ink-space);border-radius:20px;padding:var(--sp-6);color:#fff;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--sp-4);
  position:relative;overflow:hidden;
}
.back-cta::after{
  content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.4) 1px,transparent 1px);
  background-size:22px 22px;opacity:.08;pointer-events:none;
}
.back-cta > *{position:relative;z-index:1;}
.back-cta h3{color:#fff;font-size:21px;margin-bottom:6px;}
.back-cta p{color:rgba(255,255,255,.7);font-size:14.5px;}

/* ---------- buttons ---------- */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--brand);color:#fff;border:1px solid var(--brand);
  border-radius:var(--radius-btn);padding:12px 24px;font-size:15px;font-weight:600;
  transition:all .18s ease;box-shadow:0 2px 8px rgba(74,58,181,.22);
}
.btn-main:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:0 6px 18px rgba(74,58,181,.28);}
.btn-main:active{transform:translateY(0);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--brand);border:1px solid var(--brand);
  border-radius:var(--radius-btn);padding:12px 24px;font-size:15px;font-weight:600;transition:all .18s ease;
}
.btn-ghost:hover{background:rgba(74,58,181,.08);color:var(--brand-deep);border-color:var(--brand-deep);transform:translateY(-1px);}
.btn-spark{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--spark);color:var(--ink-space);border:1px solid var(--spark);
  border-radius:var(--radius-btn);padding:12px 24px;font-size:15px;font-weight:600;transition:all .18s ease;
}
.btn-spark:hover{color:var(--ink-space);filter:brightness(.94);transform:translateY(-1px);}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink-space);color:rgba(255,255,255,.72);position:relative;padding-top:var(--sp-7);
}
.site-footer::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.35) 1px,transparent 1px);
  background-size:24px 24px;opacity:.06;pointer-events:none;
}
.site-footer > .container{position:relative;z-index:1;}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:var(--sp-5);
  padding-bottom:var(--sp-6);border-bottom:1px solid rgba(255,255,255,.12);
}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.f-brand .brand-mark{background:rgba(255,255,255,.12);}
.f-brand .brand-name{color:#fff;font-size:16.5px;font-weight:600;}
.f-desc{font-size:14px;line-height:1.75;color:rgba(255,255,255,.62);max-width:340px;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;}
.site-footer a{display:block;color:rgba(255,255,255,.68);font-size:14px;padding:6px 0;}
.site-footer a:hover{color:#fff;}
.f-contact li{font-size:14px;color:rgba(255,255,255,.62);padding:6px 0;line-height:1.6;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  padding:var(--sp-4) 0;font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .container{max-width:100%;}
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:var(--sp-4);}
  .article-panel{padding:32px;}
}
@media (max-width:991.98px){
  .main-nav,.header-actions .btn-nav-login{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{min-height:64px;gap:var(--sp-3);}
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .article-side{position:static;}
  .article-hero{padding:var(--sp-5) 0 var(--sp-5);}
  .article-hero h1{font-size:29px;}
  .article-wrap{padding:var(--sp-5) 0 var(--sp-7);}
  .rec-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .mobile-tabs{display:flex;}
  body{padding-bottom:72px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:var(--sp-4);}
}
@media (max-width:767.98px){
  .container{padding:0 16px;}
  .article-panel{padding:24px 18px;border-radius:12px;}
  .article-body{font-size:16.5px;}
  .article-body h2{font-size:21px;margin-top:32px;}
  .article-body h3{font-size:17.5px;}
  .article-hero h1{font-size:25px;}
  .breadcrumb-line{font-size:13px;}
  .prevnext{grid-template-columns:1fr;}
  .rec-grid{grid-template-columns:1fr;}
  .back-cta{padding:var(--sp-5) var(--sp-4);border-radius:16px;}
  .rec-title{font-size:20px;}
}
@media (max-width:575.98px){
  .brand-name{font-size:15px;}
  .brand-mark{width:32px;height:32px;flex:0 0 32px;font-size:15px;}
  .article-hero h1{font-size:23px;margin-top:14px;}
  .hero-meta{font-size:13px;}
  .share-row{gap:8px;}
  .chip-btn{height:36px;padding:0 13px;font-size:13.5px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{justify-content:center;text-align:center;}
}

/* roulang page: category1 */
:root{
  --bg:#F6F4F0;
  --bg-soft:#ECE9F1;
  --ink-space:#14122B;
  --brand:#4A3AB5;
  --brand-deep:#2A1F6E;
  --accent:#1F9E96;
  --spark:#F0873C;
  --spark-deep:#D9762D;
  --text:#1D1B2E;
  --text-muted:#5B5870;
  --line:#DCD7E4;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(29,27,46,.06);
  --sh-2:0 10px 28px rgba(29,27,46,.12);
  --font-stack:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --stars:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140' viewBox='0 0 140 140'%3E%3Cg fill='%23ffffff'%3E%3Ccircle cx='14' cy='22' r='1'/%3E%3Ccircle cx='72' cy='38' r='1.2'/%3E%3Ccircle cx='112' cy='14' r='0.8'/%3E%3Ccircle cx='46' cy='92' r='1'/%3E%3Ccircle cx='98' cy='110' r='1.1'/%3E%3Ccircle cx='22' cy='70' r='0.9'/%3E%3Ccircle cx='128' cy='78' r='0.9'/%3E%3Ccircle cx='62' cy='126' r='0.8'/%3E%3C/g%3E%3C/svg%3E");
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-stack);
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{font-family:var(--font-stack);color:var(--text);margin:0;font-weight:600;}
h1{font-size:38px;line-height:1.3;letter-spacing:.01em;}
h2{font-size:27px;line-height:1.35;}
h3{font-size:19px;line-height:1.5;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-deep);}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
  --bs-gutter-x:0;
}
@media (min-width:1200px){
  .container{max-width:1280px;}
}
@media (max-width:767.98px){
  .container{padding-left:16px;padding-right:16px;}
}

/* ============ header ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(246,244,240,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 4px 16px rgba(29,27,46,.08);}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:74px;
}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;flex:0 0 auto;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  background:linear-gradient(150deg,var(--brand),var(--brand-deep));
  color:#fff;display:grid;place-items:center;
  font-size:18px;font-weight:600;letter-spacing:0;
  box-shadow:0 4px 12px rgba(42,31,110,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:16px;font-weight:600;color:var(--text);letter-spacing:.01em;}
.brand-text small{font-size:12px;color:var(--text-muted);letter-spacing:.02em;}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto;}
.main-nav a{
  padding:9px 14px;
  border-radius:var(--r-btn);
  font-size:15px;
  color:var(--text);
  text-decoration:none;
  white-space:nowrap;
  transition:background-color .18s ease,color .18s ease;
}
.main-nav a:hover{background:var(--bg-soft);color:var(--brand);}
.main-nav a.is-active{color:var(--brand);font-weight:600;background:rgba(74,58,181,.09);}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;color:var(--text);
  display:grid;place-items:center;font-size:17px;cursor:pointer;
  transition:border-color .18s ease,color .18s ease,background-color .18s ease;
}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);background:rgba(74,58,181,.06);}
.nav-toggle{display:none;}
@media (max-width:1199.98px){
  .main-nav a{padding:9px 10px;font-size:14px;}
}
@media (max-width:991.98px){
  .main-nav{display:none;}
  .nav-toggle{display:grid;}
  .header-cta{display:none;}
}

/* ============ 按钮 ============ */
.ui-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;
  font-size:15px;font-weight:600;line-height:1.2;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  text-decoration:none;cursor:pointer;
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
}
.ui-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.ui-btn--primary{background:var(--brand);color:#fff;box-shadow:0 4px 14px rgba(74,58,181,.24);}
.ui-btn--primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(74,58,181,.30);}
.ui-btn--primary:active{transform:translateY(0);}
.ui-btn--ghost{background:transparent;border-color:var(--brand);color:var(--brand);}
.ui-btn--ghost:hover{background:rgba(74,58,181,.08);color:var(--brand-deep);transform:translateY(-1px);}
.ui-btn--ghost:active{transform:translateY(0);}
.ui-btn--spark{background:var(--spark);color:var(--ink-space);box-shadow:0 6px 18px rgba(0,0,0,.28);}
.ui-btn--spark:hover{background:var(--spark-deep);color:var(--ink-space);transform:translateY(-1px);}
.ui-btn--spark:active{transform:translateY(0);}
.ui-btn--darkline{background:transparent;border-color:rgba(255,255,255,.38);color:#fff;}
.ui-btn--darkline:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.62);color:#fff;transform:translateY(-1px);}
.ui-btn--sm{padding:9px 16px;font-size:14px;}
.ui-btn.is-disabled{opacity:.45;cursor:not-allowed;pointer-events:none;}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--brand);
  text-decoration:underline;text-decoration-color:rgba(74,58,181,.28);
  text-underline-offset:4px;
}
.link-arrow i{font-size:14px;transition:transform .18s ease;}
.link-arrow:hover{color:var(--brand-deep);text-decoration-color:var(--brand-deep);}
.link-arrow:hover i{transform:translateX(3px);}

/* ============ 页头 Hero ============ */
.page-hero{
  position:relative;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:#fff;
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(20,18,43,.88),rgba(20,18,43,.78));
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:var(--stars);
  background-size:140px 140px;
  opacity:.14;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;padding-top:52px;padding-bottom:56px;}
.breadcrumb-line{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:rgba(255,255,255,.62);
  margin-bottom:18px;
}
.breadcrumb-line a{color:rgba(255,255,255,.82);text-decoration:none;}
.breadcrumb-line a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.breadcrumb-line .sep{color:rgba(255,255,255,.45);}
.breadcrumb-line .cur{color:rgba(255,255,255,.6);}
.page-hero h1{color:#fff;max-width:820px;}
.hero-sub{
  margin-top:16px;max-width:640px;
  font-size:16px;line-height:1.75;color:rgba(255,255,255,.82);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-note{
  margin-top:18px;font-size:13px;line-height:1.7;
  color:rgba(255,255,255,.6);
}

/* ============ 区块通用 ============ */
.section{padding:76px 0;}
.section--soft{background:var(--bg-soft);}
.section--tight{padding:56px 0;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:32px;
  margin-bottom:36px;
}
.section-head .head-text{max-width:760px;}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-muted);letter-spacing:.04em;
  margin-bottom:12px;
}
.kicker::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--brand);}
.section-head h2{margin-bottom:12px;}
.section-head .lead{font-size:15px;line-height:1.8;color:var(--text-muted);margin:0;}
.head-thumb{flex:0 0 168px;}
.head-thumb img{
  width:168px;height:168px;object-fit:cover;
  border-radius:var(--r-img);border:1px solid var(--line);box-shadow:var(--sh-1);
}
@media (max-width:767.98px){
  .section{padding:52px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:20px;margin-bottom:26px;}
  .head-thumb{display:none;}
}

/* ============ 目录索引网格 ============ */
.index-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.index-group{
  position:relative;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
  transition:box-shadow .22s ease,transform .22s ease;
  display:flex;flex-direction:column;
}
.index-group:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.index-group::before{
  content:"";position:absolute;left:24px;top:0;
  width:38px;height:1px;background:var(--brand);
}
.index-group h3{font-size:18px;display:flex;align-items:center;gap:9px;margin-bottom:6px;}
.index-group h3::before{
  content:"";width:8px;height:8px;border-radius:2px;background:var(--accent);flex:0 0 auto;
}
.index-group .group-note{font-size:13px;color:var(--text-muted);margin:0 0 6px;line-height:1.7;}
.idx-list{list-style:none;margin:12px 0 18px;padding:0;flex:1 1 auto;}
.idx-list li{
  position:relative;
  padding:7px 0 7px 16px;
  font-size:15px;line-height:1.65;color:var(--text);
  transition:color .18s ease,transform .18s ease;
}
.idx-list li::before{
  content:"";position:absolute;left:0;top:15px;
  width:6px;height:6px;border-radius:2px;background:var(--accent);opacity:.7;
}
.idx-list li:hover{color:var(--brand);transform:translateX(2px);}
@media (max-width:991.98px){
  .index-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:575.98px){
  .index-grid{grid-template-columns:1fr;gap:16px;}
  .index-group{padding:20px 18px;}
}

/* ============ 核对要点 ============ */
.check-list{display:grid;gap:16px;}
.check-item{
  display:flex;gap:20px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:22px 24px;
  box-shadow:var(--sh-1);
  transition:box-shadow .22s ease,transform .22s ease;
}
.check-item:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.check-num{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  background:rgba(240,135,60,.16);color:#A9511A;
  display:grid;place-items:center;font-size:13px;font-weight:600;
  margin-top:4px;
}
.check-body h3{font-size:17px;margin-bottom:6px;}
.check-body p{font-size:15px;line-height:1.8;color:var(--text-muted);margin:0;}
@media (max-width:575.98px){
  .check-item{padding:18px;gap:14px;}
}

/* ============ 流程步骤 ============ */
.steps{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
}
.step{
  position:relative;
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:24px 22px;
  box-shadow:var(--sh-1);
  transition:box-shadow .22s ease,transform .22s ease;
}
.step:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.step-num{
  width:26px;height:26px;border-radius:50%;
  background:rgba(31,158,150,.14);color:#12736D;
  display:grid;place-items:center;font-size:13px;font-weight:600;
  margin-bottom:16px;
}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:14px;line-height:1.75;color:var(--text-muted);margin:0;}
.steps-line{
  height:1px;background:var(--line);margin:0 0 -12px;
}
@media (max-width:1199.98px){
  .steps{grid-template-columns:repeat(2,1fr);}
  .steps-line{display:none;}
}
@media (max-width:575.98px){
  .steps{grid-template-columns:1fr;gap:14px;}
  .step{padding:20px 18px;}
}

/* ============ 图文交错 ============ */
.split{
  display:grid;grid-template-columns:1.05fr 1fr;
  gap:48px;align-items:center;
}
.split-media{margin:0;}
.split-media img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border-radius:var(--r-img);border:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.split-body h2{margin-bottom:16px;}
.split-body p{font-size:16px;line-height:1.9;color:var(--text-muted);}
.split-list{list-style:none;margin:20px 0 24px;padding:0;}
.split-list li{
  position:relative;padding:8px 0 8px 22px;
  font-size:15px;line-height:1.75;color:var(--text);
}
.split-list li::before{
  content:"";position:absolute;left:0;top:16px;
  width:10px;height:1px;background:var(--brand);
}
@media (max-width:991.98px){
  .split{grid-template-columns:1fr;gap:26px;}
}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;background:none;border:0;
  text-align:left;
  padding:19px 48px 19px 0;
  font-size:17px;font-weight:600;color:var(--text);
  line-height:1.6;position:relative;cursor:pointer;
  transition:color .18s ease;
}
.faq-q:hover{color:var(--brand);}
.faq-q .plus{
  position:absolute;right:6px;top:50%;
  transform:translateY(-50%);
  width:22px;height:22px;display:grid;place-items:center;
  font-size:18px;color:var(--text-muted);
  transition:transform .25s ease,color .2s ease;
}
.faq-item.is-open .faq-q{color:var(--brand);}
.faq-item.is-open .plus{transform:translateY(-50%) rotate(45deg);color:var(--brand);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s ease;
}
.faq-item.is-open .faq-a{max-height:520px;}
.faq-a p{
  font-size:15px;line-height:1.8;color:var(--text-muted);
  border-left:3px solid var(--brand);
  padding:2px 0 20px 16px;
  margin:0 0 0 0;
}
@media (max-width:575.98px){
  .faq-q{font-size:16px;padding:16px 40px 16px 0;}
}

/* ============ CTA ============ */
.cta-band{
  position:relative;
  background:var(--ink-space);
  color:#fff;
  overflow:hidden;
  padding:64px 0;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:var(--stars);
  background-size:140px 140px;
  opacity:.12;pointer-events:none;
}
.cta-inner{
  position:relative;z-index:2;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
}
.cta-inner h2{color:#fff;font-size:26px;margin-bottom:10px;}
.cta-inner p{margin:0;font-size:15px;line-height:1.8;color:rgba(255,255,255,.74);max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto;}
@media (max-width:991.98px){
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px;}
  .cta-band{padding:52px 0;}
}

/* ============ footer ============ */
.site-footer{
  position:relative;
  background:var(--ink-space);
  color:rgba(255,255,255,.76);
  padding:64px 0 0;
  overflow:hidden;
}
.site-footer::after{
  content:"";position:absolute;inset:0;
  background-image:var(--stars);
  background-size:140px 140px;
  opacity:.08;pointer-events:none;
}
.footer-grid{
  position:relative;z-index:2;
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:32px;
}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px;}
.site-footer a{
  display:block;
  color:rgba(255,255,255,.72);
  font-size:14px;line-height:1.7;
  padding:5px 0;
  text-decoration:none;
}
.site-footer a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.f-brand .brand-mark{
  width:36px;height:36px;border-radius:11px;
  background:linear-gradient(150deg,var(--brand),var(--brand-deep));
  color:#fff;display:grid;place-items:center;font-size:16px;font-weight:600;
}
.brand-name{color:#fff;font-size:16px;font-weight:600;}
.f-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:340px;margin:0;}
.f-contact{list-style:none;margin:0;padding:0;}
.f-contact li{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);}
.footer-bottom{
  position:relative;z-index:2;
  margin-top:44px;
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.55);
}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr;}
  .site-footer{padding-top:52px;}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px;}
}

/* ============ 移动抽屉 ============ */
.mobile-drawer{
  background:var(--bg);
  border-left:1px solid var(--line);
  width:320px !important;
}
.mobile-drawer .offcanvas-header{
  border-bottom:1px solid var(--line);
  padding:18px 20px;
}
.drawer-title{font-size:16px;font-weight:600;color:var(--text);}
.drawer-close{
  width:36px;height:36px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;color:var(--text);
  display:grid;place-items:center;cursor:pointer;
}
.drawer-close:hover{border-color:var(--brand);color:var(--brand);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 14px;border-radius:var(--r-btn);
  font-size:15px;color:var(--text);text-decoration:none;
  transition:background-color .18s ease,color .18s ease;
}
.drawer-nav a:hover{background:var(--bg-soft);color:var(--brand);}
.drawer-nav a.is-active{color:var(--brand);font-weight:600;background:rgba(74,58,181,.09);}
.drawer-cta{width:100%;margin-top:22px;}

/* ============ 移动底部 Tab ============ */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;
  display:none;
  background:#fff;
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -4px 16px rgba(29,27,46,.06);
}
.mobile-tabbar a{
  flex:1 1 0;
  height:56px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:10px;line-height:1.2;color:var(--text-muted);
  text-decoration:none;position:relative;
  transition:color .18s ease;
}
.mobile-tabbar a i{font-size:18px;}
.mobile-tabbar a.is-active{color:var(--brand);font-weight:600;}
.mobile-tabbar a.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;background:var(--spark);
}
@media (max-width:991.98px){
  .mobile-tabbar{display:flex;}
  body{padding-bottom:72px;}
  .site-footer{padding-bottom:0;}
}

::selection{background:rgba(74,58,181,.16);}

/* roulang page: category2 */
:root{
  --bg:#F6F4F0;
  --bg-soft:#ECE9F1;
  --ink-space:#14122B;
  --brand:#4A3AB5;
  --brand-deep:#2A1F6E;
  --accent:#1F9E96;
  --spark:#F0873C;
  --text:#1D1B2E;
  --text-muted:#5B5870;
  --line:#DCD7E4;

  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;

  --shadow-1:0 2px 8px rgba(29,27,46,.06);
  --shadow-2:0 10px 28px rgba(29,27,46,.12);

  --bs-body-bg:#F6F4F0;
  --bs-body-color:#1D1B2E;
  --bs-border-color:#DCD7E4;
  --bs-link-color:#4A3AB5;
  --bs-link-hover-color:#2A1F6E;
  --bs-primary:#4A3AB5;
  --bs-primary-rgb:74,58,181;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.7;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease}
a:hover{color:var(--brand-deep)}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
h1,h2,h3,h4{margin:0 0 .6em;font-weight:600;line-height:1.35;color:var(--text)}
p{margin:0 0 1.4em}
ul{margin:0;padding:0;list-style:none}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
@media (min-width:1200px){.container{max-width:1280px}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(246,244,240,.95);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 2px 10px rgba(29,27,46,.06);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:74px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--text);
}
.brand:hover{color:var(--text)}
.brand-mark{
  width:36px;height:36px;
  border-radius:10px;
  background:var(--brand);
  color:#fff;
  display:grid;place-items:center;
  font-size:17px;font-weight:600;
  flex:0 0 auto;
}
.brand-name{
  font-size:16px;
  font-weight:600;
  letter-spacing:.01em;
  white-space:nowrap;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:2px;
  margin-left:auto;
}
.main-nav a{
  position:relative;
  padding:9px 14px;
  border-radius:999px;
  font-size:15px;
  color:var(--text-muted);
  white-space:nowrap;
}
.main-nav a:hover{color:var(--brand);background:rgba(74,58,181,.07)}
.main-nav a.is-active{
  color:var(--brand);
  font-weight:600;
  background:rgba(74,58,181,.10);
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border:none;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  padding:11px 20px;
  cursor:pointer;
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
  text-decoration:none;
}
.btn:active{transform:translateY(0)}
.btn-brand{background:var(--brand);color:#fff;box-shadow:var(--shadow-1)}
.btn-brand:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-outline{background:transparent;color:var(--brand);border:1px solid var(--brand)}
.btn-outline:hover{background:rgba(74,58,181,.08);color:var(--brand-deep);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--brand);padding:11px 4px}
.btn-ghost:hover{color:var(--brand-deep);text-decoration:underline;text-underline-offset:4px}
.btn-spark{background:var(--spark);color:var(--ink-space);box-shadow:0 6px 18px rgba(0,0,0,.28)}
.btn-spark:hover{background:#dd7529;color:var(--ink-space);transform:translateY(-1px)}
.btn-outline-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.5)}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-1px)}
.btn-lg{padding:13px 26px;font-size:16px}
.btn-block{width:100%}
.btn[disabled]{opacity:.45;cursor:not-allowed}

.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  background:#fff;
  color:var(--text);
  font-size:20px;
  align-items:center;justify-content:center;
}
.offcanvas{background:var(--bg)}
.offcanvas-header{border-bottom:1px solid var(--line)}
.offcanvas .oc-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 4px;
  border-bottom:1px solid var(--line);
  font-size:16px;
  color:var(--text);
}
.offcanvas .oc-link.is-active{color:var(--brand);font-weight:600;border-left:3px solid var(--brand);padding-left:12px}
.offcanvas .oc-link i{color:var(--text-muted)}
.oc-cta{margin-top:22px;padding-bottom:16px}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  background:var(--ink-space) url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:#fff;
  padding:70px 0 62px;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background:rgba(20,18,43,.84);
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='72' height='72'%3E%3Ccircle cx='3' cy='3' r='1.1' fill='%23ffffff'/%3E%3Ccircle cx='44' cy='28' r='1' fill='%23ffffff'/%3E%3Ccircle cx='20' cy='58' r='0.9' fill='%23ffffff'/%3E%3C/svg%3E");
  opacity:.12;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb-bar{
  display:flex;align-items:center;gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.66);
  margin-bottom:20px;
}
.breadcrumb-bar a{color:rgba(255,255,255,.78)}
.breadcrumb-bar a:hover{color:#fff}
.breadcrumb-bar .sep{color:rgba(255,255,255,.4)}
.breadcrumb-bar .current{color:rgba(255,255,255,.6)}
.page-hero h1{
  font-size:38px;
  line-height:1.3;
  letter-spacing:.01em;
  color:#fff;
  margin-bottom:18px;
  max-width:820px;
}
.page-hero .hero-lead{
  font-size:16px;
  line-height:1.85;
  color:rgba(255,255,255,.78);
  max-width:700px;
  margin-bottom:26px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.hero-tags span{
  font-size:13px;
  padding:5px 13px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.28);
  color:rgba(255,255,255,.86);
  background:rgba(255,255,255,.06);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 通用区块 ---------- */
.section{padding:76px 0}
.section-soft{background:var(--bg-soft)}
.section-tight{padding:56px 0}
.section-head{max-width:720px;margin-bottom:40px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;
  color:var(--accent);
  letter-spacing:.04em;
  margin-bottom:12px;
}
.section-head .eyebrow::before{
  content:"";
  width:14px;height:3px;border-radius:2px;background:var(--accent);
  display:inline-block;
}
.section-title{
  font-size:27px;
  line-height:1.35;
  margin-bottom:14px;
}
.section-lead{
  font-size:15px;
  line-height:1.8;
  color:var(--text-muted);
  margin:0;
}
.divider-star{
  height:1px;background:var(--line);
  position:relative;
  margin:0;
}
.divider-star::before,
.divider-star::after{
  content:"";
  position:absolute;top:-2px;
  width:5px;height:5px;border-radius:50%;
  background:var(--line);
}
.divider-star::before{left:0}
.divider-star::after{right:0}

/* ---------- 时间轴 ---------- */
.timeline{margin-top:8px}
.tl-group{
  position:relative;
  padding-left:40px;
  margin-bottom:10px;
}
.tl-group::before{
  content:"";
  position:absolute;
  left:8px;top:14px;bottom:-6px;
  width:1px;
  background:var(--line);
}
.tl-group:last-child::before{display:none}
.tl-group-title{
  font-size:19px;
  margin:0 0 18px;
  color:var(--text);
}
.tl-group-title em{
  display:block;
  font-style:normal;
  font-size:13px;
  font-weight:400;
  color:var(--text-muted);
  margin-top:6px;
  letter-spacing:.02em;
}
.tl-item{position:relative;margin-bottom:20px}
.tl-dot{
  position:absolute;
  left:-35px;
  top:26px;
  width:11px;height:11px;
  border-radius:50%;
  background:var(--accent);
  border:3px solid var(--bg);
  box-shadow:0 0 0 1px var(--line);
}
.section-soft .tl-dot{border-color:var(--bg-soft)}
.tl-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px 24px;
  box-shadow:var(--shadow-1);
  transition:box-shadow .22s ease,transform .22s ease;
}
.tl-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.tl-card h3{
  font-size:18px;
  margin:12px 0 10px;
}
.tl-card p{
  font-size:15px;
  line-height:1.75;
  color:var(--text-muted);
  margin:0;
}
.tl-card p + p{margin-top:10px}
.tl-card .mini-list{margin-top:14px}
.tl-card .mini-list li{
  position:relative;
  padding-left:16px;
  font-size:14px;
  line-height:1.75;
  color:var(--text-muted);
  margin-bottom:6px;
}
.tl-card .mini-list li::before{
  content:"";
  position:absolute;
  left:0;top:10px;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--brand);
  opacity:.55;
}
.badge-soft{
  display:inline-flex;align-items:center;
  height:24px;
  padding:0 12px;
  border-radius:999px;
  font-size:12.5px;
  background:var(--bg-soft);
  color:var(--text);
}
.badge-accent{
  display:inline-flex;align-items:center;
  height:24px;
  padding:0 12px;
  border-radius:999px;
  font-size:12.5px;
  background:rgba(31,158,150,.12);
  color:#0F6B66;
}
.badge-spark{
  display:inline-flex;align-items:center;
  height:24px;
  padding:0 12px;
  border-radius:999px;
  font-size:12.5px;
  background:rgba(240,135,60,.16);
  color:#A7521A;
}

/* ---------- 适用场景 ---------- */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.scene-card{
  display:flex;
  gap:20px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:20px;
  box-shadow:var(--shadow-1);
  transition:box-shadow .22s ease,transform .22s ease;
}
.scene-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.scene-thumb{
  flex:0 0 168px;
  border-radius:var(--radius-img);
  overflow:hidden;
  border:1px solid var(--line);
}
.scene-thumb img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover}
.scene-body h3{font-size:17.5px;margin-bottom:8px}
.scene-body p{font-size:14.5px;line-height:1.7;color:var(--text-muted);margin:0}

/* ---------- 核对清单 ---------- */
.check-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:26px 32px;
}
.check-col h3{
  font-size:17px;
  padding-bottom:12px;
  margin-bottom:14px;
  border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:9px;
}
.check-col h3 i{color:var(--accent);font-size:18px}
.check-col li{
  font-size:15px;
  line-height:1.75;
  color:var(--text-muted);
  padding:7px 0 7px 16px;
  position:relative;
}
.check-col li::before{
  content:"";
  position:absolute;
  left:0;top:15px;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--brand);
  opacity:.5;
}

/* ---------- 处理流程 ---------- */
.step-list{display:grid;gap:18px}
.step-item{
  display:flex;
  gap:18px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:20px 22px;
  box-shadow:var(--shadow-1);
}
.step-num{
  flex:0 0 auto;
  width:28px;height:28px;
  border-radius:50%;
  background:var(--spark);
  color:var(--ink-space);
  font-size:14px;
  font-weight:600;
  display:grid;place-items:center;
}
.step-item h3{font-size:17px;margin-bottom:8px}
.step-item p{font-size:14.5px;line-height:1.75;color:var(--text-muted);margin:0}

/* ---------- FAQ ---------- */
.faq-accordion{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:6px 24px;box-shadow:var(--shadow-1)}
.faq-accordion .accordion-item{
  border:0;
  border-bottom:1px solid var(--line);
  background:transparent;
  border-radius:0;
}
.faq-accordion .accordion-item:last-child{border-bottom:0}
.faq-accordion .accordion-header{margin:0}
.faq-accordion .accordion-button{
  position:relative;
  background:transparent;
  color:var(--text);
  font-size:17px;
  font-weight:600;
  line-height:1.5;
  padding:20px 46px 20px 18px;
  box-shadow:none;
  border-radius:0;
}
.faq-accordion .accordion-button::before{
  content:"";
  position:absolute;
  left:0;top:20px;bottom:20px;
  width:3px;
  border-radius:2px;
  background:transparent;
  transition:background-color .2s ease;
}
.faq-accordion .accordion-button:not(.collapsed){
  color:var(--brand);
  background:transparent;
  box-shadow:none;
}
.faq-accordion .accordion-button:not(.collapsed)::before{background:var(--brand)}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--accent);outline-offset:-2px}
.faq-accordion .accordion-button::after{
  width:16px;height:16px;
  background-size:16px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M8 2.5v11M2.5 8h11' stroke='%234A3AB5' stroke-width='1.7' stroke-linecap='round'/%3E%3C/svg%3E");
  transition:transform .25s ease;
}
.faq-accordion .accordion-button:not(.collapsed)::after{
  transform:rotate(45deg);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M8 2.5v11M2.5 8h11' stroke='%234A3AB5' stroke-width='1.7' stroke-linecap='round'/%3E%3C/svg%3E");
}
.faq-accordion .accordion-body{
  font-size:15px;
  line-height:1.85;
  color:var(--text-muted);
  padding:0 46px 22px 18px;
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  background:var(--ink-space);
  color:#fff;
  border-radius:20px;
  padding:44px 40px;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;inset:0;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='72' height='72'%3E%3Ccircle cx='3' cy='3' r='1.1' fill='%23ffffff'/%3E%3Ccircle cx='44' cy='28' r='1' fill='%23ffffff'/%3E%3Ccircle cx='20' cy='58' r='0.9' fill='%23ffffff'/%3E%3C/svg%3E");
  opacity:.1;
  pointer-events:none;
}
.cta-band .cta-inner{
  position:relative;z-index:2;
  display:flex;align-items:center;justify-content:space-between;gap:30px;
  flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:24px;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.74);font-size:15px;margin:0;max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-space);
  color:rgba(255,255,255,.72);
  padding:62px 0 26px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:38px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.f-brand .brand-mark{background:var(--brand)}
.f-brand .brand-name{color:#fff;font-size:16px;font-weight:600}
.f-desc{
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.6);
  margin:0;
  max-width:340px;
}
.site-footer h4{
  color:#fff;
  font-size:15px;
  margin-bottom:16px;
  font-weight:600;
}
.site-footer a{
  display:block;
  font-size:14px;
  color:rgba(255,255,255,.66);
  padding:6px 0;
}
.site-footer a:hover{color:#fff}
.f-contact li{
  font-size:14px;
  line-height:1.7;
  color:rgba(255,255,255,.6);
  padding:6px 0;
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:22px;
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ---------- 移动底部 Tab ---------- */
.mobile-tabbar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:1040;
  background:rgba(246,244,240,.98);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tabbar .tab-inner{
  display:flex;
  height:56px;
}
.mobile-tabbar a{
  flex:1;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:2px;
  font-size:10px;
  color:var(--text-muted);
  position:relative;
}
.mobile-tabbar a i{font-size:19px;line-height:1}
.mobile-tabbar a.is-active{color:var(--brand);font-weight:600}
.mobile-tabbar a.is-active::before{
  content:"";
  position:absolute;
  top:0;left:50%;
  transform:translateX(-50%);
  width:26px;height:2px;
  background:var(--spark);
  border-radius:0 0 2px 2px;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .main-nav a{padding:9px 11px;font-size:14.5px}
  .brand-name{font-size:15px}
}
@media (max-width:991px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions{margin-left:auto}
  .header-actions .btn-entry{display:none}
  .mobile-tabbar{display:block}
  body{padding-bottom:72px}
  .page-hero{padding:56px 0 50px}
  .page-hero h1{font-size:31px}
  .section{padding:60px 0}
  .check-grid{grid-template-columns:repeat(2,1fr);gap:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .container{padding-left:16px;padding-right:16px}
  .brand-name{font-size:14px}
  .brand-mark{width:32px;height:32px;font-size:15px}
  .page-hero{padding:44px 0 42px}
  .page-hero h1{font-size:26px;margin-bottom:14px}
  .page-hero .hero-lead{font-size:15px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .section{padding:46px 0}
  .section-tight{padding:42px 0}
  .section-title{font-size:21px}
  .section-head{margin-bottom:28px}
  .tl-group{padding-left:24px}
  .tl-group::before{left:5px}
  .tl-dot{left:-24px;top:24px;width:10px;height:10px}
  .tl-card{padding:18px}
  .scene-grid{grid-template-columns:1fr;gap:18px}
  .scene-card{flex-direction:column;gap:14px}
  .scene-thumb{flex:none;width:100%}
  .scene-thumb img{aspect-ratio:16/9}
  .check-grid{grid-template-columns:1fr;gap:22px}
  .step-item{padding:18px}
  .faq-accordion{padding:4px 16px}
  .faq-accordion .accordion-button{font-size:16px;padding:18px 40px 18px 14px}
  .faq-accordion .accordion-body{padding:0 16px 20px 14px}
  .cta-band{padding:30px 22px;border-radius:16px}
  .cta-band h2{font-size:21px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:575px){
  .brand-name{font-size:13px;max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .page-hero h1{font-size:24px}
  .hero-tags span{font-size:12px}
}

/* roulang page: category4 */
:root{
  --bg:#F6F4F0;
  --bg-soft:#ECE9F1;
  --ink-space:#14122B;
  --brand:#4A3AB5;
  --brand-deep:#2A1F6E;
  --accent:#1F9E96;
  --spark:#F0873C;
  --text:#1D1B2E;
  --text-muted:#5B5870;
  --line:#DCD7E4;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 2px 8px rgba(29,27,46,.06);
  --shadow-2:0 10px 28px rgba(29,27,46,.12);
  --sp-1:8px;--sp-2:12px;--sp-3:16px;--sp-4:24px;--sp-5:32px;--sp-6:48px;--sp-7:64px;--sp-8:88px;
  --font-cn:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.7;
  padding-bottom:72px;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--brand-deep);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;background:none;border:none;padding:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
h1,h2,h3,h4{margin:0;font-weight:600;color:var(--text);}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1200px){.container{max-width:1280px;}}
@media (max-width:767px){.container{padding:0 16px;}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(246,244,240,.96);
  border-bottom:1px solid var(--line);
  box-shadow:0 2px 8px rgba(29,27,46,.05);
}
.nav-inner{display:flex;align-items:center;gap:var(--sp-5);height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:600;letter-spacing:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:16px;font-weight:600;letter-spacing:.01em;}
.brand-sub{font-size:12px;color:var(--text-muted);letter-spacing:.04em;}
.main-nav{display:flex;align-items:center;gap:var(--sp-4);margin-left:auto;}
.main-nav a{
  position:relative;font-size:15px;color:var(--text);padding:6px 0;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--spark);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.main-nav a:hover{color:var(--brand);}
.main-nav a:hover::after,.main-nav a.is-active::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--brand);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:var(--sp-2);flex:0 0 auto;}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--text-muted);
  display:inline-flex;align-items:center;justify-content:center;
  transition:all .2s ease;
}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
.hamburger{display:none;}

/* ---------- buttons ---------- */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:all .2s ease;white-space:nowrap;
}
.btn-primary-x{background:var(--brand);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary-x:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(74,58,181,.24);}
.btn-primary-x:active{transform:translateY(0);}
.btn-ghost-x{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-ghost-x:hover{background:rgba(74,58,181,.08);color:var(--brand-deep);transform:translateY(-1px);}
.btn-spark-x{background:var(--spark);color:var(--ink-space);box-shadow:0 2px 8px rgba(0,0,0,.28);}
.btn-spark-x:hover{background:#DE7529;color:var(--ink-space);transform:translateY(-1px);}
.btn-line-x{background:#fff;border-color:var(--line);color:var(--text);}
.btn-line-x:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
.btn-x[disabled],.btn-x.is-disabled{opacity:.45;cursor:not-allowed;transform:none;}

/* ---------- page head ---------- */
.page-head{
  position:relative;color:#fff;overflow:hidden;
  background-image:linear-gradient(rgba(20,18,43,.82),rgba(20,18,43,.88)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  padding:64px 0 56px;
}
.page-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:22px 22px;opacity:.5;
}
.page-head .container{position:relative;z-index:1;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.7);margin-bottom:20px;}
.crumbs a{color:rgba(255,255,255,.82);}
.crumbs a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.crumbs .sep{opacity:.5;}
.crumbs .current{color:rgba(255,255,255,.6);}
.page-head h1{font-size:38px;line-height:1.3;letter-spacing:.01em;color:#fff;margin-bottom:16px;}
.page-head .lead{font-size:16px;line-height:1.85;color:rgba(255,255,255,.78);max-width:760px;margin-bottom:26px;}
.head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
.head-tag{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 14px;border-radius:999px;
  font-size:13px;color:rgba(255,255,255,.86);
  border:1px solid rgba(255,255,255,.28);
}
.head-cta{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}

/* ---------- section ---------- */
.section{padding:72px 0;}
.section.tight{padding:56px 0;}
.section.soft{background:var(--bg-soft);}
.section.dark{background:var(--ink-space);color:#fff;}
.section.dark h2,.section.dark h3{color:#fff;}
.section.dark p{color:rgba(255,255,255,.74);}
.sec-head{margin-bottom:var(--sp-6);max-width:780px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.sec-label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--brand);margin-bottom:12px;
}
.sec-label::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--spark);}
.section.dark .sec-label{color:#B9AEF0;}
.sec-head h2{font-size:27px;line-height:1.35;margin-bottom:12px;}
.sec-head{
  position:relative;
}
.sec-head h2{position:relative;padding-left:16px;}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:2px;background:var(--brand);
}
.section.dark .sec-head h2::before{background:var(--spark);}
.sec-head.center h2{padding-left:0;}
.sec-head.center h2::before{display:none;}
.sec-sub{font-size:15px;line-height:1.85;color:var(--text-muted);}
.section.dark .sec-sub{color:rgba(255,255,255,.7);}

/* ---------- chips ---------- */
.chip-bar{
  display:flex;gap:10px;overflow-x:auto;padding:6px 2px 14px;
  scrollbar-width:thin;-webkit-overflow-scrolling:touch;
}
.chip-bar::-webkit-scrollbar{height:6px;}
.chip-bar::-webkit-scrollbar-thumb{background:var(--line);border-radius:999px;}
.chip{
  flex:0 0 auto;height:36px;padding:0 18px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:var(--text);
  font-size:14px;display:inline-flex;align-items:center;gap:6px;
  transition:all .2s ease;
}
.chip:hover{border-color:var(--brand);color:var(--brand);}
.chip.is-on{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;}
.chip .num{font-size:12px;opacity:.7;}

/* ---------- card grid ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--sp-4);}
.device-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.device-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#CFC7E0;}
.card-cover{
  border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:4/3;margin-bottom:18px;background:var(--bg-soft);
}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.device-card:hover .card-cover img{transform:scale(1.03);}
.card-meta-row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px;}
.badge-x{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 12px;
  border-radius:999px;font-size:12.5px;line-height:1;
}
.badge-soft{background:var(--bg-soft);color:var(--text);}
.badge-accent{background:rgba(31,158,150,.12);color:#158079;}
.badge-spark{background:rgba(240,135,60,.16);color:#C4651F;}
.card-time{font-size:13px;color:var(--text-muted);}
.device-card h3{font-size:18px;line-height:1.5;margin-bottom:10px;}
.device-card h3 a{color:var(--text);}
.device-card h3 a:hover{color:var(--brand);}
.card-desc{
  font-size:15px;line-height:1.7;color:var(--text-muted);margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;font-size:14px;
}
.card-foot .go{color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.card-foot .go i{transition:transform .2s ease;font-size:12px;}
.card-foot .go:hover i{transform:translateX(3px);}
.empty-note{display:none;text-align:center;padding:56px 20px;color:var(--text-muted);font-size:15px;}
.empty-note i{font-size:44px;display:block;margin-bottom:16px;color:var(--line);}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--sp-4);}
.step{
  display:flex;gap:16px;padding:24px;border-radius:var(--radius-card);
  border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-1);
}
.step-no{
  flex:0 0 auto;width:34px;height:34px;border-radius:999px;background:var(--spark);
  color:var(--ink-space);font-size:15px;font-weight:600;
  display:flex;align-items:center;justify-content:center;
}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:14.5px;line-height:1.75;color:var(--text-muted);margin:0;}

/* ---------- stats ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--sp-4);margin-top:var(--sp-5);}
.stat{
  padding:24px 22px;border-radius:var(--radius-card);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
}
.stat .num{font-size:30px;font-weight:600;color:#fff;line-height:1.2;letter-spacing:.01em;}
.stat .num small{font-size:15px;font-weight:400;color:rgba(255,255,255,.6);margin-left:4px;}
.stat .cap{font-size:14px;color:rgba(255,255,255,.68);margin-top:8px;line-height:1.6;}

/* ---------- compare ---------- */
.compare{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--sp-4);}
.compare-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);transition:all .22s ease;
}
.compare-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.compare-card .ico{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(74,58,181,.09);color:var(--brand);font-size:19px;margin-bottom:16px;
}
.compare-card h3{font-size:18px;margin-bottom:12px;}
.tick-list li{
  display:flex;gap:10px;font-size:14.5px;line-height:1.7;color:var(--text-muted);
  padding:7px 0;border-bottom:1px dashed var(--line);
}
.tick-list li:last-child{border-bottom:none;}
.tick-list i{color:var(--accent);font-size:13px;margin-top:5px;}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:0 4px;min-height:56px;text-align:left;font-size:16px;font-weight:600;color:var(--text);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand);}
.faq-q .sign{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--brand);
  transition:transform .25s ease,background-color .25s ease;
}
.faq-item.is-open .faq-q{color:var(--brand);}
.faq-item.is-open .faq-q .sign{transform:rotate(45deg);background:var(--bg-soft);}
.faq-a{display:none;padding:2px 0 22px 16px;border-left:3px solid var(--brand);margin-bottom:6px;}
.faq-item.is-open .faq-a{display:block;}
.faq-a p{font-size:15px;line-height:1.85;color:var(--text-muted);margin:0;}

/* ---------- cta ---------- */
.cta-band{
  background:var(--bg-soft);border:1px solid var(--line);border-radius:20px;
  padding:32px;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
}
.cta-band h2{font-size:22px;margin-bottom:8px;}
.cta-band p{font-size:15px;color:var(--text-muted);margin:0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.pill-btn{
  display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 18px;
  border-radius:999px;border:1px solid var(--brand);color:var(--brand);background:transparent;
  font-size:14.5px;transition:all .2s ease;
}
.pill-btn:hover{background:rgba(74,58,181,.08);color:var(--brand-deep);}
.pill-btn.is-on{background:var(--brand);border-color:var(--brand);color:#fff;}
.pill-btn.is-on i{color:var(--spark);}
.pill-btn.is-done{background:var(--accent);border-color:var(--accent);color:#fff;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-space);color:rgba(255,255,255,.72);padding:64px 0 24px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:var(--sp-5);}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:#fff;}
.f-brand .brand-mark{background:var(--brand);}
.f-brand .brand-name{font-size:16px;font-weight:600;}
.f-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);margin:0;max-width:340px;}
.site-footer h4{font-size:15px;color:#fff;margin-bottom:16px;}
.site-footer a{display:block;font-size:14px;color:rgba(255,255,255,.72);padding:5px 0;}
.site-footer a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.f-contact li{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);padding:4px 0;}
.footer-bottom{
  margin-top:var(--sp-6);padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- mobile tab ---------- */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;
  display:none;background:#fff;border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -2px 12px rgba(29,27,46,.08);
}
.mobile-tab ul{display:flex;}
.mobile-tab li{flex:1;}
.mobile-tab a{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:4px;height:56px;font-size:10px;color:var(--text-muted);
}
.mobile-tab a i{font-size:17px;}
.mobile-tab a.is-active{color:var(--brand);font-weight:600;}
.mobile-tab a.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:28px;height:2px;background:var(--spark);border-radius:2px;
}

/* ---------- offcanvas ---------- */
.offcanvas{background:var(--bg);}
.offcanvas-header{border-bottom:1px solid var(--line);}
.offcanvas-title{font-size:16px;font-weight:600;}
.oc-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:15px 4px;border-bottom:1px solid var(--line);color:var(--text);font-size:15px;
}
.oc-nav a:hover{color:var(--brand);}
.oc-nav a.is-active{color:var(--brand);font-weight:600;}
.oc-foot{margin-top:24px;}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .card-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;}
}
@media (max-width:991px){
  .main-nav{display:none;}
  .nav-actions .btn-primary-x{display:none;}
  .hamburger{display:inline-flex;}
  .page-head{padding:48px 0 44px;}
  .page-head h1{font-size:30px;}
  .section{padding:56px 0;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:1fr;}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .compare{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:var(--sp-4);}
  .mobile-tab{display:block;}
}
@media (max-width:767px){
  .page-head h1{font-size:26px;}
  .page-head .lead{font-size:15px;}
  .sec-head h2{font-size:21px;}
  .card-grid{grid-template-columns:1fr;}
  .section{padding:48px 0;}
  .cta-band{padding:24px;flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .pill-btn{flex:1 1 auto;justify-content:center;}
  .stat-grid{grid-template-columns:1fr 1fr;gap:12px;}
  .stat{padding:18px;}
  .stat .num{font-size:24px;}
  .step{padding:18px;}
  .device-card{padding:18px;}
  .head-cta .btn-x{width:100%;}
}
@media (max-width:575px){
  .brand-sub{display:none;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .stat-grid{grid-template-columns:1fr;}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --bg:#F6F4F0;
  --bg-soft:#ECE9F1;
  --ink-space:#14122B;
  --brand:#4A3AB5;
  --brand-deep:#2A1F6E;
  --accent:#1F9E96;
  --spark:#F0873C;
  --text:#1D1B2E;
  --text-muted:#5B5870;
  --line:#DCD7E4;
  --white:#FFFFFF;

  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;

  --sh-1:0 2px 8px rgba(29,27,46,.06);
  --sh-2:0 10px 28px rgba(29,27,46,.12);
  --sh-dark:0 6px 18px rgba(0,0,0,.28);

  --s-1:8px; --s-2:12px; --s-3:16px; --s-4:24px; --s-5:32px; --s-6:48px; --s-7:64px; --s-8:88px;

  --font-cn:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  padding-bottom:0;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0;font-weight:600;color:var(--text);letter-spacing:.01em;}
h1{font-size:38px;line-height:1.3;}
h2{font-size:27px;line-height:1.35;}
h3{font-size:19px;line-height:1.5;}
p{margin:0 0 1.4em;}
p:last-child{margin-bottom:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;}
a:hover{color:var(--brand-deep);}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

/* ============ 容器 ============ */
.container,
.container-lg{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
@media (min-width:1400px){
  .container,.container-lg{max-width:1280px;}
}

/* ============ 通用板块 ============ */
.section{padding:80px 0;}
.section.tight{padding:56px 0;}
.section.soft{background:var(--bg-soft);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{margin-bottom:12px;position:relative;padding-left:18px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;
  background:var(--brand);border-radius:2px;
}
.section-head .lead{font-size:15px;line-height:1.8;color:var(--text-muted);margin:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-muted);margin-bottom:12px;letter-spacing:.04em;
}
.eyebrow::before{
  content:"";width:8px;height:8px;border-radius:3px;background:var(--accent);display:inline-block;
}

/* ============ 按钮 ============ */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:500;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;
  white-space:nowrap;
}
.btn-x:active{transform:translateY(0);}
.btn-primary-x{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary-x:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-ghost-x{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn-ghost-x:hover{background:rgba(74,58,181,.08);color:var(--brand-deep);transform:translateY(-1px);}
.btn-spark{background:var(--spark);color:var(--ink-space);font-weight:600;box-shadow:var(--sh-dark);}
.btn-spark:hover{background:#e2762c;color:var(--ink-space);transform:translateY(-1px);}
.btn-sm-x{height:40px;padding:0 16px;font-size:14px;}
.btn-block-x{width:100%;}
.link-cta{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;color:var(--brand);
  text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;
}
.link-cta:hover{color:var(--brand-deep);text-underline-offset:6px;}
.link-cta svg{transition:transform .2s ease;}
.link-cta:hover svg{transform:translateX(3px);}
.btn-x[disabled],.btn-x.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ============ 徽章 / 标签 ============ */
.badge-x{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;
  border-radius:var(--r-pill);font-size:12.5px;line-height:1;font-weight:500;
}
.badge-soft{background:var(--bg-soft);color:var(--text);}
.badge-accent{background:rgba(31,158,150,.12);color:#137a74;}
.badge-spark{background:rgba(240,135,60,.16);color:#a85617;}
.badge-outline{border:1px solid var(--line);color:var(--text-muted);background:transparent;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:var(--bg);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease,background-color .25s ease;
}
.site-header.is-stuck{
  border-bottom-color:var(--line);
  box-shadow:0 4px 16px rgba(29,27,46,.07);
  background:rgba(246,244,240,.96);
}
.hd-inner{
  display:flex;align-items:center;gap:24px;
  min-height:74px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:var(--ink-space);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:600;letter-spacing:0;
  position:relative;overflow:hidden;
}
.brand-mark::after{
  content:"";position:absolute;right:5px;top:5px;width:5px;height:5px;border-radius:50%;
  background:var(--spark);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-size:16.5px;font-weight:600;color:var(--text);}
.brand-sub{font-size:12px;color:var(--text-muted);letter-spacing:.02em;}

.main-nav{
  display:flex;align-items:center;gap:4px;
  margin-left:auto;
}
.main-nav a{
  display:inline-flex;align-items:center;height:38px;padding:0 13px;
  border-radius:8px;font-size:15px;color:var(--text-muted);
  position:relative;
}
.main-nav a:hover{color:var(--brand);background:rgba(74,58,181,.07);}
.main-nav a.is-active{color:var(--brand);font-weight:600;background:rgba(74,58,181,.08);}
.main-nav a.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:-1px;height:2px;
  background:var(--spark);border-radius:2px;
}
.hd-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:transparent;color:var(--text-muted);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:all .2s ease;
}
.icon-btn:hover{color:var(--brand);border-color:var(--brand);background:rgba(74,58,181,.06);}
.hamburger{display:none;}

/* Offcanvas 移动菜单 */
.offcanvas{background:var(--bg);}
.offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.offcanvas-title{font-size:16px;font-weight:600;}
.offcanvas-body{padding:16px 20px 28px;}
.m-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:24px;}
.m-nav a{
  display:flex;align-items:center;gap:10px;
  padding:13px 14px;border-radius:12px;font-size:16px;color:var(--text);
}
.m-nav a:hover{background:var(--bg-soft);}
.m-nav a.is-active{background:rgba(74,58,181,.1);color:var(--brand);font-weight:600;border-left:3px solid var(--brand);}
.m-nav a .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex-shrink:0;}

/* ============ 页头 banner（分类页） ============ */
.page-hero{
  position:relative;
  background-color:var(--ink-space);
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(20,18,43,.90) 0%,rgba(20,18,43,.82) 55%,rgba(42,31,110,.78) 100%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.1;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='70' height='70'%3E%3Ccircle cx='3' cy='4' r='1' fill='%23ffffff'/%3E%3Ccircle cx='36' cy='24' r='1' fill='%23ffffff'/%3E%3Ccircle cx='56' cy='46' r='1' fill='%23ffffff'/%3E%3Ccircle cx='20' cy='60' r='1' fill='%23ffffff'/%3E%3C/svg%3E");
}
.page-hero .container{position:relative;z-index:2;}
.hero-inner{padding:64px 0 60px;max-width:860px;}
.crumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13.5px;color:rgba(255,255,255,.66);margin-bottom:20px;
}
.crumb a{color:rgba(255,255,255,.8);}
.crumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.crumb .sep{color:rgba(255,255,255,.4);}
.crumb .current{color:rgba(255,255,255,.62);}
.page-hero h1{color:#fff;margin-bottom:16px;}
.page-hero .hero-desc{
  font-size:15.5px;line-height:1.85;color:rgba(255,255,255,.82);
  max-width:700px;margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:18px;}
.page-hero .hero-note{font-size:13px;color:rgba(255,255,255,.6);line-height:1.6;}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px;}
.hero-tags span{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;
  border-radius:var(--r-pill);font-size:13px;
  background:rgba(255,255,255,.12);color:rgba(255,255,255,.9);
  border:1px solid rgba(255,255,255,.16);
}

/* ============ 图文交错区 ============ */
.zig{
  display:grid;
  grid-template-columns:55% 1fr;
  gap:48px;
  align-items:center;
  padding:32px 0;
  border-top:1px solid var(--line);
}
.zig:first-of-type{border-top:0;padding-top:0;}
.zig.is-flip .zig-media{grid-column:2;grid-row:1;}
.zig.is-flip .zig-body{grid-column:1;grid-row:1;}
.zig-media{
  position:relative;
  aspect-ratio:16/9;
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  background:var(--bg-soft);
}
.zig-media img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s ease;}
.zig:hover .zig-media img{transform:scale(1.03);}
.zig-media .media-tag{
  position:absolute;left:14px;top:14px;
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:12.5px;
  background:rgba(20,18,43,.72);color:#fff;
}
.zig-body .tick-label{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:34px;height:24px;padding:0 9px;margin-bottom:12px;
  border-radius:7px;background:var(--bg-soft);border:1px solid var(--line);
  font-size:12.5px;color:var(--text-muted);letter-spacing:.04em;
}
.zig-body h3{margin-bottom:12px;}
.zig-body p{font-size:16px;line-height:1.85;color:var(--text-muted);margin-bottom:18px;}
.zig-points{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px;}
.zig-points span{
  display:inline-flex;align-items:center;height:26px;padding:0 11px;
  border-radius:var(--r-pill);border:1px solid var(--line);
  font-size:12.5px;color:var(--text-muted);background:#fff;
}

/* ============ 深色排查顺序区 ============ */
.flow-band{
  position:relative;
  background:var(--ink-space);
  color:#fff;
  padding:80px 0;
  overflow:hidden;
}
.flow-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.1;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='80'%3E%3Ccircle cx='4' cy='6' r='1' fill='%23ffffff'/%3E%3Ccircle cx='42' cy='28' r='1' fill='%23ffffff'/%3E%3Ccircle cx='64' cy='54' r='1' fill='%23ffffff'/%3E%3Ccircle cx='24' cy='68' r='1' fill='%23ffffff'/%3E%3C/svg%3E");
}
.flow-band .container{position:relative;z-index:2;}
.flow-band h2{color:#fff;}
.flow-band .section-head h2::before{background:var(--spark);}
.flow-band .section-head .lead{color:rgba(255,255,255,.72);}
.flow-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.flow-item{
  display:flex;gap:16px;
  padding:24px;
  border-radius:var(--r-card);
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  transition:background-color .25s ease,transform .25s ease,border-color .25s ease;
}
.flow-item:hover{background:rgba(255,255,255,.1);transform:translateY(-2px);border-color:rgba(255,255,255,.2);}
.flow-no{
  flex:0 0 auto;width:12px;height:12px;border-radius:50%;
  background:var(--spark);margin-top:9px;
  box-shadow:0 0 0 4px rgba(240,135,60,.18);
}
.flow-item h3{color:#fff;font-size:16.5px;margin-bottom:8px;}
.flow-item p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.7);margin:0;}
.flow-foot{
  margin-top:32px;font-size:13px;color:rgba(255,255,255,.58);line-height:1.7;
}

/* ============ 现象对照表 ============ */
.table-wrap{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  background:#fff;
  box-shadow:var(--sh-1);
}
.table-scroll{overflow-x:auto;}
table.symptom{width:100%;border-collapse:collapse;min-width:680px;}
table.symptom th,table.symptom td{
  padding:16px 20px;text-align:left;font-size:15px;line-height:1.7;
  border-bottom:1px solid var(--line);
  vertical-align:top;
}
table.symptom thead th{
  background:var(--bg-soft);color:var(--text);font-weight:600;font-size:14.5px;
  white-space:nowrap;
}
table.symptom tbody tr:last-child td{border-bottom:0;}
table.symptom tbody tr:hover{background:rgba(236,233,241,.5);}
table.symptom td:first-child{font-weight:600;color:var(--text);width:26%;}
table.symptom td:nth-child(2){color:var(--text-muted);width:34%;}
table.symptom td:last-child{color:var(--text-muted);}
.table-note{margin-top:14px;font-size:13px;color:var(--text-muted);}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;}
.accordion-item{
  background:transparent;
  border:0;
  border-top:1px solid var(--line);
}
.accordion-item:last-child{border-bottom:1px solid var(--line);}
.accordion-button{
  background:transparent;
  color:var(--text);
  font-size:16.5px;font-weight:600;line-height:1.6;
  padding:18px 44px 18px 18px;
  border-radius:0;
  box-shadow:none !important;
  position:relative;
}
.accordion-button::after{display:none;}
.accordion-button .faq-mark{
  position:absolute;right:14px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;border-radius:8px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  color:var(--text-muted);font-size:16px;line-height:1;
  transition:transform .28s ease,background-color .28s ease,color .28s ease,border-color .28s ease;
}
.accordion-button:not(.collapsed){color:var(--brand);}
.accordion-button:not(.collapsed) .faq-mark{
  transform:translateY(-50%) rotate(45deg);
  background:var(--brand);border-color:var(--brand);color:#fff;
}
.accordion-button:hover{color:var(--brand);}
.accordion-button:focus{outline:none;}
.accordion-button:focus-visible{outline:2px solid var(--accent);outline-offset:-2px;}
.accordion-body{
  padding:0 44px 22px 21px;
  font-size:15px;line-height:1.85;color:var(--text-muted);
  border-left:3px solid var(--brand);
  margin-left:18px;
}
.accordion-body p{margin-bottom:.9em;}
.accordion-body ul{margin:0 0 .4em;}
.accordion-body li{position:relative;padding-left:16px;margin-bottom:6px;}
.accordion-body li::before{
  content:"";position:absolute;left:0;top:11px;width:5px;height:5px;border-radius:50%;background:var(--accent);
}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;
  background:var(--ink-space);
  border-radius:0;
  padding:64px 0;
  overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.1;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='90' height='90'%3E%3Ccircle cx='6' cy='8' r='1' fill='%23ffffff'/%3E%3Ccircle cx='48' cy='30' r='1' fill='%23ffffff'/%3E%3Ccircle cx='72' cy='62' r='1' fill='%23ffffff'/%3E%3Ccircle cx='28' cy='76' r='1' fill='%23ffffff'/%3E%3C/svg%3E");
}
.cta-band .container{position:relative;z-index:2;}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-inner h2{color:#fff;font-size:26px;margin-bottom:10px;}
.cta-inner p{color:rgba(255,255,255,.72);font-size:15px;margin:0;max-width:560px;line-height:1.8;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-space);
  color:rgba(255,255,255,.72);
  padding:64px 0 0;
  font-size:14.5px;
  position:relative;
  overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.08;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='100'%3E%3Ccircle cx='8' cy='10' r='1' fill='%23ffffff'/%3E%3Ccircle cx='54' cy='36' r='1' fill='%23ffffff'/%3E%3Ccircle cx='80' cy='70' r='1' fill='%23ffffff'/%3E%3Ccircle cx='30' cy='84' r='1' fill='%23ffffff'/%3E%3C/svg%3E");
}
.site-footer .container{position:relative;z-index:2;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1.1fr 1.2fr;gap:40px;
  padding-bottom:44px;
}
.f-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.f-brand .brand-mark{background:#fff;color:var(--ink-space);}
.f-brand .brand-mark::after{background:var(--spark);}
.f-brand .brand-name{color:#fff;font-size:16.5px;font-weight:600;}
.f-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);margin:0;max-width:340px;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:18px;font-weight:600;}
.site-footer a{
  display:block;color:rgba(255,255,255,.7);font-size:14.5px;
  padding:6px 0;line-height:1.6;
}
.site-footer a:hover{color:#fff;transform:translateX(2px);}
.f-contact li{
  font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);
  padding:4px 0;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ 移动底部 Tab ============ */
.tabbar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:1035;
  background:rgba(246,244,240,.98);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -4px 18px rgba(29,27,46,.07);
}
.tabbar-inner{display:flex;}
.tab-item{
  flex:1;height:56px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  position:relative;color:var(--text-muted);font-size:10.5px;line-height:1;
}
.tab-item svg{width:21px;height:21px;stroke:currentColor;fill:none;stroke-width:1.7;}
.tab-item.is-active{color:var(--brand);font-weight:600;}
.tab-item.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;background:var(--spark);border-radius:2px;
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .main-nav a{padding:0 10px;font-size:14.5px;}
  .brand-sub{display:none;}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:28px;}
}
@media (max-width:991px){
  h1{font-size:30px;}
  h2{font-size:24px;}
  .main-nav{display:none;}
  .hamburger{display:inline-flex;}
  .section{padding:60px 0;}
  .section.tight{padding:44px 0;}
  .zig{grid-template-columns:1fr;gap:24px;padding:26px 0;}
  .zig.is-flip .zig-media,
  .zig.is-flip .zig-body{grid-column:auto;grid-row:auto;}
  .zig-media{order:1;}
  .zig-body{order:2;}
  .flow-band{padding:60px 0;}
  .flow-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  body{padding-bottom:72px;}
  .tabbar{display:block;}
  .cta-band{padding:52px 0;}
}
@media (max-width:767px){
  body{font-size:16px;}
  h1{font-size:27px;}
  h2{font-size:22px;}
  h3{font-size:17.5px;}
  .container,.container-lg{padding-left:16px;padding-right:16px;}
  .hd-inner{min-height:64px;gap:12px;}
  .brand-name{font-size:15.5px;}
  .hero-inner{padding:44px 0 46px;}
  .page-hero .hero-desc{font-size:15px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn-x{width:100%;}
  .section{padding:52px 0;}
  .section-head{margin-bottom:28px;}
  .section-head h2{padding-left:14px;font-size:22px;}
  .section-head h2::before{top:6px;bottom:6px;}
  .zig-body p{font-size:15.5px;}
  .flow-item{padding:20px;}
  .accordion-button{font-size:15.5px;padding:16px 42px 16px 12px;}
  .accordion-body{padding:0 20px 20px 15px;font-size:14.5px;margin-left:12px;}
  .cta-inner h2{font-size:21px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-x{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:32px;}
  .site-footer{padding-top:48px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;font-size:12.5px;}
  table.symptom th,table.symptom td{padding:13px 14px;font-size:14px;}
}
@media (max-width:575px){
  h1{font-size:26px;}
  .brand-mark{width:34px;height:34px;font-size:15px;border-radius:10px;}
  .brand-name{font-size:15px;}
  .hero-tags span{font-size:12px;height:26px;}
  .eyebrow{font-size:12.5px;}
  .tab-item{font-size:10px;}
}