/* roulang page: index */
:root {
    --c-primary: #1B6BFF;
    --c-primary-dark: #0F52D1;
    --c-accent: #FF7A45;
    --c-bg: #F6F9FC;
    --c-bg-alt: #EDF3FC;
    --c-white: #FFFFFF;
    --c-title: #12263A;
    --c-text: #3D5167;
    --c-muted: #718096;
    --c-border: #D9E4F2;
    --c-border-card: #E7EDF5;
    --c-dark: #0B1B33;
    --c-dark-text: #B8C7DC;
    --shadow-sm: 0 1px 3px rgba(18,38,58,.05);
    --shadow-card: 0 4px 16px rgba(18,38,58,.06);
    --shadow-hover: 0 12px 32px rgba(18,38,58,.10);
    --shadow-nav: 0 4px 24px rgba(18,38,58,.06);
    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-btn: 8px;
    --space-section: clamp(64px, 8vw, 104px);
    --font-sans: "PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",sans-serif;
    --font-num: "DIN Alternate","Roboto","Arial",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
    font-family:var(--font-sans);
    font-size:16px;
    line-height:1.75;
    color:var(--c-text);
    background:var(--c-bg);
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
}
a{color:var(--c-primary);text-decoration:none;transition:color .25s ease}
img{max-width:100%;display:block}
ul,ol{list-style:none}
button,input,textarea,select{font-family:inherit;font-size:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
section{position:relative}

.btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:14px 28px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;line-height:1;
    border:1.5px solid transparent;cursor:pointer;
    transition:all .25s ease;text-decoration:none;min-height:40px;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 4px 12px rgba(27,107,255,.25)}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-2px);box-shadow:0 8px 20px rgba(27,107,255,.3);color:#fff}
.btn-primary:active{transform:translateY(-1px)}
.btn-outline{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-outline:hover{background:rgba(27,107,255,.06);color:var(--c-primary-dark);border-color:var(--c-primary-dark)}
.btn-white{background:#fff;color:var(--c-primary)}
.btn-white:hover{background:#EAF1FE;transform:translateY(-2px);color:var(--c-primary-dark)}
.btn-lg{padding:16px 36px;font-size:16px}
.btn-sm{padding:10px 20px;font-size:14px}
.btn:focus-visible{outline:3px solid rgba(27,107,255,.3);outline-offset:2px}

.link-more{font-size:14px;font-weight:500;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px}
.link-more i{transition:transform .25s ease}
.link-more:hover i{transform:translateX(4px)}

.site-header{
    position:fixed;top:0;left:0;right:0;z-index:1000;
    background:rgba(255,255,255,.72);
    backdrop-filter:blur(14px) saturate(160%);
    -webkit-backdrop-filter:blur(14px) saturate(160%);
    border-bottom:1px solid rgba(255,255,255,.45);
    box-shadow:var(--shadow-nav);
    transition:background .3s ease,box-shadow .3s ease;
}
.site-header.scrolled{
    background:rgba(255,255,255,.97);
    border-bottom-color:var(--c-border);
}
.header-inner{
    display:flex;align-items:center;justify-content:space-between;
    height:72px;
}
.brand-logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-icon{
    width:40px;height:40px;border-radius:10px;
    background:linear-gradient(135deg,var(--c-primary),#6A9FFF);
    display:flex;align-items:center;justify-content:center;
    color:#fff;font-size:18px;
}
.brand-text{font-size:20px;font-weight:700;color:var(--c-title);letter-spacing:.02em}
.main-nav{
    display:flex;gap:28px;
    margin-left:auto;margin-right:28px;
}
.nav-link{
    position:relative;color:var(--c-title);
    font-size:15px;font-weight:500;
    padding:8px 2px;white-space:nowrap;
    transition:color .25s ease;
}
.nav-link::after{
    content:'';position:absolute;left:0;bottom:0;
    width:100%;height:2px;background:var(--c-primary);
    transform:scaleX(0);transform-origin:left;
    transition:transform .3s ease;
}
.nav-link:hover{color:var(--c-primary)}
.nav-link.active{color:var(--c-primary);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.header-search{position:relative}
.search-toggle{
    width:40px;height:40px;border:none;background:transparent;
    border-radius:8px;color:var(--c-title);cursor:pointer;
    font-size:15px;transition:background .25s ease,color .25s ease;
}
.search-toggle:hover{background:#EAF1FE;color:var(--c-primary)}
.search-box{
    position:absolute;right:0;top:calc(100% + 8px);
    width:260px;border:1px solid var(--c-border);
    border-radius:var(--radius-md);background:#fff;
    box-shadow:var(--shadow-card);display:none;padding:8px;
    z-index:1100;
}
.search-box.open{display:flex;gap:8px}
.search-box input{
    flex:1;border:none;outline:none;font-size:14px;
    color:var(--c-title);background:var(--c-bg);
    border-radius:6px;padding:9px 12px;
}
.search-box button{
    width:38px;background:var(--c-primary);color:#fff;
    border:none;border-radius:6px;cursor:pointer;
}
.nav-toggle{
    display:none;width:40px;height:40px;border:none;
    background:transparent;cursor:pointer;
    flex-direction:column;justify-content:center;align-items:center;gap:5px;
    padding:8px;border-radius:6px;
}
.nav-toggle span{
    display:block;height:2px;width:22px;background:var(--c-title);
    border-radius:2px;transition:transform .3s ease,opacity .3s ease;
}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.hero{
    min-height:88vh;display:flex;align-items:center;
    background:linear-gradient(135deg,#EAF1FE 0%,#F8FAFE 45%,#FFFFFF 100%);
    padding:140px 0 80px;overflow:hidden;
}
.hero::before{
    content:'';position:absolute;inset:0;
    background-image:radial-gradient(#CBD8EA 1px,transparent 1px);
    background-size:24px 24px;opacity:.04;
}
.hero-inner{
    display:grid;grid-template-columns:1.05fr .95fr;
    gap:56px;align-items:center;
}
.hero-title{
    font-size:44px;font-weight:700;color:var(--c-title);
    line-height:1.25;letter-spacing:.01em;margin-bottom:20px;
}
.hero-title .accent{color:var(--c-primary)}
.hero-subtitle{
    font-size:17px;color:var(--c-text);line-height:1.75;
    margin-bottom:32px;max-width:540px;
}
.hero-actions{display:flex;gap:16px;align-items:center;margin-bottom:28px;flex-wrap:wrap}
.hero-trust{display:flex;gap:20px;flex-wrap:wrap;align-items:center}
.hero-trust span{
    display:inline-flex;align-items:center;gap:6px;
    font-size:13px;color:var(--c-muted);
}
.hero-trust span i{color:var(--c-primary);font-size:14px}
.hero-visual{
    position:relative;border-radius:var(--radius-lg);
    overflow:hidden;box-shadow:var(--shadow-hover);
    background:#E7EDF5;aspect-ratio:4/3;
}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-panel{
    position:absolute;left:20px;right:20px;bottom:20px;
    background:rgba(255,255,255,.92);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    border-radius:14px;padding:18px 22px;
    border:1px solid rgba(255,255,255,.6);
    box-shadow:var(--shadow-card);
}
.panel-head{
    display:flex;align-items:center;gap:8px;
    font-size:13px;font-weight:600;color:var(--c-title);
    margin-bottom:12px;
}
.panel-head i{color:var(--c-primary)}
.panel-row{
    display:flex;justify-content:space-between;align-items:center;
    padding:6px 0;font-size:13px;color:var(--c-muted);
    border-bottom:1px dashed var(--c-border);
}
.panel-row:last-child{border-bottom:none}
.panel-row strong{color:var(--c-title);font-family:var(--font-num);font-size:15px}

.stats-band{
    background:var(--c-bg-alt);
    padding:44px 0;border-top:1px solid var(--c-border);
    border-bottom:1px solid var(--c-border);
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.stat-item{text-align:center;position:relative}
.stat-item:not(:last-child)::after{
    content:'';position:absolute;right:-16px;top:50%;
    transform:translateY(-50%);
    width:1px;height:44px;background:var(--c-border);
}
.stat-num{
    font-family:var(--font-num);font-size:42px;font-weight:700;
    color:var(--c-title);line-height:1.2;
    display:inline-block;position:relative;padding-bottom:8px;
}
.stat-num::after{
    content:'';position:absolute;left:50%;transform:translateX(-50%);
    bottom:0;width:24px;height:3px;background:var(--c-primary);
    border-radius:2px;
}
.stat-label{margin-top:14px;font-size:14px;color:var(--c-muted)}

.steps-section{padding:var(--space-section) 0;background:#fff}
.section-head{margin-bottom:48px}
.section-tagline{
    font-size:14px;color:var(--c-primary);font-weight:600;
    margin-bottom:8px;display:block;letter-spacing:.02em;
}
.section-title{
    font-size:30px;font-weight:700;color:var(--c-title);
    line-height:1.35;position:relative;padding-left:18px;margin-bottom:12px;
}
.section-title::before{
    content:'';position:absolute;left:0;top:6px;bottom:6px;
    width:4px;background:var(--c-primary);border-radius:2px;
}
.section-sub{font-size:16px;color:var(--c-muted);max-width:620px}
.steps-grid{
    display:grid;grid-template-columns:repeat(3,1fr);gap:32px;
    position:relative;
}
.steps-grid::before{
    content:'';position:absolute;top:36px;left:18%;right:18%;
    border-top:2px dashed var(--c-border);z-index:0;
}
.step-card{
    background:#fff;border:1px solid var(--c-border-card);
    border-radius:var(--radius-lg);padding:28px;
    box-shadow:var(--shadow-card);position:relative;z-index:1;
    transition:transform .25s ease,box-shadow .25s ease;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.step-top{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.step-num{
    font-family:var(--font-num);font-size:28px;font-weight:700;
    color:var(--c-primary);line-height:1;
}
.step-icon{
    width:46px;height:46px;border-radius:12px;
    background:#EAF1FE;color:var(--c-primary);
    display:flex;align-items:center;justify-content:center;
    font-size:18px;flex-shrink:0;
}
.step-title{font-size:18px;font-weight:600;color:var(--c-title);margin-bottom:8px}
.step-desc{font-size:14px;line-height:1.7;color:var(--c-text)}
.step-action{margin-top:32px;text-align:center}

.news-section{padding:var(--space-section) 0;background:var(--c-bg)}
.cms-list{align-items:stretch}
.cms-card{
    background:#fff;border:1px solid var(--c-border-card);
    border-radius:var(--radius-lg);overflow:hidden;
    box-shadow:var(--shadow-card);height:100%;
    display:flex;flex-direction:column;
    transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.cms-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(27,107,255,.25)}
.cms-card-media{
    aspect-ratio:16/10;overflow:hidden;background:var(--c-bg-alt);
    display:block;position:relative;
}
.cms-card-lg .cms-card-media{aspect-ratio:16/9}
.cms-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.cms-card:hover .cms-card-media img{transform:scale(1.03)}
.cms-card-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.cms-meta{display:flex;align-items:center;gap:10px;margin-bottom:10px;font-size:13px;color:var(--c-muted)}
.cms-cat{
    background:#EAF1FE;color:var(--c-primary);
    padding:3px 10px;border-radius:999px;font-size:12px;font-weight:500;
}
.cms-title{
    font-size:17px;font-weight:600;color:var(--c-title);
    line-height:1.5;margin-bottom:8px;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-title a{color:var(--c-title)}
.cms-title a:hover{color:var(--c-primary)}
.cms-excerpt{
    font-size:14px;color:var(--c-text);line-height:1.65;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
    margin-bottom:14px;flex:1;
}
.cms-empty{
    border:1.5px dashed var(--c-border);
    background:rgba(234,241,254,.4);
    border-radius:var(--radius-lg);padding:56px 24px;
    text-align:center;color:var(--c-muted);font-size:15px;
    width:100%;
}
.cms-empty i{font-size:44px;color:var(--c-border);display:block;margin-bottom:14px}
.cms-more{text-align:center;margin-top:36px}

.cases-section{padding:var(--space-section) 0;background:#fff}
.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{
    background:#fff;border:1px solid var(--c-border-card);
    border-radius:var(--radius-lg);overflow:hidden;
    box-shadow:var(--shadow-card);
    transition:transform .25s ease,box-shadow .25s ease;
}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.case-media{height:190px;overflow:hidden;background:var(--c-bg-alt)}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.case-card:hover .case-media img{transform:scale(1.04)}
.case-body{padding:24px}
.case-title{font-size:18px;font-weight:600;color:var(--c-title);margin-bottom:8px}
.case-desc{font-size:14px;color:var(--c-text);line-height:1.7;margin-bottom:16px}
.case-tags{display:flex;gap:8px;flex-wrap:wrap}
.case-tag{
    background:#EAF1FE;color:var(--c-primary);
    font-size:13px;padding:4px 12px;border-radius:999px;
}

.faq-section{padding:var(--space-section) 0;background:var(--c-bg)}
.faq-list{max-width:840px;margin:0 auto}
.faq-item{
    background:#fff;border:1px solid var(--c-border-card);
    border-radius:12px;margin-bottom:12px;overflow:hidden;
    transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item.active{border-color:rgba(27,107,255,.35);box-shadow:var(--shadow-sm)}
.faq-question{margin:0}
.faq-question button{
    width:100%;background:none;border:none;
    padding:20px 24px;text-align:left;
    font-size:16px;font-weight:600;color:var(--c-title);
    cursor:pointer;display:flex;justify-content:space-between;
    align-items:center;gap:16px;
}
.faq-question i{color:var(--c-primary);font-size:14px;transition:transform .3s ease;flex-shrink:0}
.faq-item.active .faq-question i{transform:rotate(45deg)}
.faq-answer{display:none;padding:0 24px 20px;font-size:14px;line-height:1.75;color:var(--c-text)}
.faq-answer p{margin-bottom:8px}
.faq-answer p:last-child{margin-bottom:0}
.faq-guide{
    text-align:center;margin-top:28px;
    font-size:14px;color:var(--c-muted);
}
.faq-guide .link-more{margin-left:6px}

.cta-section{
    background:linear-gradient(135deg,#0B1B33 0%,#12263A 55%,#1B3A5C 100%);
    padding:var(--space-section) 0;text-align:center;
}
.cta-title{font-size:32px;color:#fff;font-weight:700;margin-bottom:14px;letter-spacing:.01em}
.cta-sub{color:rgba(255,255,255,.75);font-size:16px;margin-bottom:32px;max-width:600px;margin-left:auto;margin-right:auto}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:20px}
.cta-note{font-size:13px;color:rgba(255,255,255,.5)}

.site-footer{background:#0B1B33;color:var(--c-dark-text);padding-top:64px}
.footer-top{
    display:grid;grid-template-columns:1.4fr .8fr .8fr 1fr;
    gap:48px;padding-bottom:48px;
    border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand .brand-logo{margin-bottom:16px}
.footer-brand .brand-text{color:#fff}
.footer-brand p{font-size:14px;line-height:1.75;color:var(--c-dark-text);max-width:320px}
.footer-col h4{
    font-size:15px;font-weight:600;color:#fff;
    margin-bottom:18px;position:relative;padding-bottom:10px;
}
.footer-col h4::after{
    content:'';position:absolute;left:0;bottom:0;
    width:24px;height:2px;background:var(--c-primary);
}
.footer-links a{
    display:block;color:var(--c-dark-text);font-size:14px;
    padding:5px 0;transition:color .25s ease,padding-left .25s ease;
    position:relative;
}
.footer-links a:hover{color:#fff;padding-left:10px}
.footer-links a:hover::before{
    content:'';position:absolute;left:0;top:50%;
    transform:translateY(-50%);
    width:2px;height:14px;background:var(--c-primary);
}
.footer-contact p{font-size:14px;margin-bottom:10px;display:flex;gap:10px;align-items:flex-start}
.footer-contact i{color:var(--c-primary);margin-top:4px;width:16px;text-align:center}
.footer-bottom{
    padding:24px 0;display:flex;justify-content:space-between;
    align-items:center;font-size:13px;
    color:rgba(255,255,255,.45);flex-wrap:wrap;gap:12px;
}
.footer-bottom a{color:rgba(255,255,255,.55)}
.footer-bottom a:hover{color:#fff}
.footer-bottom .legal-links{display:flex;gap:20px}

@media (max-width:1024px){
    .hero-inner{grid-template-columns:1fr;gap:36px}
    .hero-visual{max-width:640px}
    .stats-grid{grid-template-columns:repeat(2,1fr);gap:24px}
    .stat-item::after{display:none}
    .steps-grid{gap:20px}
    .cases-grid{gap:16px}
    .footer-top{grid-template-columns:1fr 1fr;gap:40px}
    .main-nav{gap:20px;margin-right:20px}
}
@media (max-width:768px){
    .container{padding:0 20px}
    .header-inner{height:64px}
    .site-header{height:64px}
    .main-nav{
        position:fixed;top:64px;left:0;right:0;
        background:#fff;flex-direction:column;
        padding:8px 24px 24px;gap:0;
        box-shadow:var(--shadow-nav);
        transform:translateY(-120%);
        transition:transform .3s ease;
        margin:0;z-index:999;
        border-bottom:1px solid var(--c-border);
    }
    .main-nav.open{transform:translateY(0)}
    .nav-link{
        padding:14px 0;border-bottom:1px solid var(--c-border-card);
        font-size:16px;
    }
    .nav-toggle{display:flex}
    .hero{padding:110px 0 56px;min-height:auto}
    .hero-title{font-size:32px}
    .hero-subtitle{font-size:15px}
    .hero-actions{flex-direction:row}
    .steps-grid{grid-template-columns:1fr}
    .steps-grid::before{display:none}
    .cases-grid{grid-template-columns:1fr}
    .cta-title{font-size:26px}
    .footer-top{grid-template-columns:1fr;gap:32px}
    .header-actions .btn-primary{display:none}
}
@media (max-width:520px){
    .hero-title{font-size:28px}
    .hero-actions{flex-direction:column}
    .hero-actions .btn{width:100%}
    .stats-grid{grid-template-columns:1fr 1fr;gap:20px}
    .stat-num{font-size:30px}
    .section-title{font-size:24px}
    .cta-actions{flex-direction:column}
    .cta-actions .btn{width:100%}
    .footer-bottom{flex-direction:column;text-align:center}
    .header-search{display:none}
}

/* roulang page: article */
/* ===== 设计变量 ===== */
:root {
  --primary: #1B6BFF;
  --primary-dark: #0F52D1;
  --primary-light: #EAF1FE;
  --accent: #FF7A45;
  --bg: #F6F9FC;
  --bg-soft: #EDF3FC;
  --text-heading: #12263A;
  --text-body: #3D5167;
  --text-muted: #718096;
  --border: #D9E4F2;
  --card-border: #E7EDF5;
  --footer-bg: #0B1B33;
  --footer-text: #B8C7DC;
  --white: #FFFFFF;
  --shadow-sm: 0 1px 3px rgba(18, 38, 58, .05);
  --shadow-card: 0 4px 16px rgba(18, 38, 58, .06);
  --shadow-hover: 0 12px 32px rgba(18, 38, 58, .10);
  --shadow-nav: 0 4px 24px rgba(18, 38, 58, .06);
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --space-section: clamp(64px, 8vw, 104px);
  --space-inner: 32px;
  --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
  --font-num: "DIN Alternate", "Roboto", "Arial", sans-serif;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-body);
  background: var(--bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--primary-dark); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; }
ul, ol { list-style-position: inside; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; width: 100%; }
::selection { background: rgba(27, 107, 255, .15); }

/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background: rgba(255, 255, 255, .72);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  backdrop-filter: blur(14px) saturate(160%);
  border-bottom: 1px solid rgba(255, 255, 255, .45);
  box-shadow: var(--shadow-nav);
  transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.site-header.scrolled {
  background: rgba(255, 255, 255, .97);
  border-bottom: 1px solid #E2E8F0;
  box-shadow: var(--shadow-nav);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--primary);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  box-shadow: 0 4px 12px rgba(27, 107, 255, .30);
}
.brand-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-heading);
  letter-spacing: .01em;
  white-space: nowrap;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}
.main-nav .nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 40px;
  padding: 0 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-heading);
  border-radius: var(--radius-sm);
  transition: color .2s ease, background .2s ease;
  white-space: nowrap;
}
.main-nav .nav-link:hover { color: var(--primary); background: var(--primary-light); }
.main-nav .nav-link.active { color: var(--primary); font-weight: 600; }
.main-nav .nav-link.active::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 2px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.header-actions { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.header-search { position: relative; }
.search-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-heading);
  font-size: 15px;
  transition: background .2s ease, color .2s ease;
}
.search-toggle:hover { background: var(--primary-light); color: var(--primary); }
.search-box {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: 300px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-hover);
  padding: 8px;
  display: flex;
  gap: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: all .25s ease;
}
.search-box.open { opacity: 1; visibility: visible; transform: translateY(0); }
.search-box input {
  flex: 1;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 14px;
  color: var(--text-heading);
  background: var(--bg);
  outline: none;
  transition: border-color .2s ease;
}
.search-box input:focus { border-color: var(--primary); }
.search-box button {
  width: 42px;
  border-radius: var(--radius-sm);
  background: var(--primary);
  color: var(--white);
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .2s ease;
}
.search-box button:hover { background: var(--primary-dark); }
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: var(--radius-sm);
}
.nav-toggle span {
  width: 20px;
  height: 2px;
  background: var(--text-heading);
  border-radius: 2px;
  transition: all .25s ease;
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all .25s ease;
  white-space: nowrap;
  border: 1.5px solid transparent;
}
.btn i { font-size: 14px; transition: transform .25s ease; }
.btn-sm { height: 40px; padding: 0 20px; font-size: 14px; }
.btn-primary { background: var(--primary); color: var(--white); box-shadow: 0 4px 14px rgba(27, 107, 255, .28); }
.btn-primary:hover { background: var(--primary-dark); color: var(--white); transform: translateY(-2px); box-shadow: 0 8px 22px rgba(15, 82, 209, .30); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:hover i { transform: translateX(3px); }
.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: rgba(27, 107, 255, .06); color: var(--primary-dark); }
.btn-white { background: var(--white); color: var(--primary); }
.btn-white:hover { background: var(--primary-light); color: var(--primary-dark); }
.btn:focus-visible { outline: 3px solid rgba(27, 107, 255, .30); outline-offset: 2px; }
.btn[disabled] { opacity: .5; pointer-events: none; }

/* ===== 面包屑 ===== */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
  padding: 0;
  list-style: none;
  background: none;
}
.breadcrumb li { display: flex; align-items: center; gap: 8px; }
.breadcrumb li::after { content: "/"; color: #A0AEC0; }
.breadcrumb li:last-child::after { content: ""; }
.breadcrumb a { color: var(--text-muted); transition: color .2s ease; }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .current { color: var(--text-heading); font-weight: 500; max-width: 300px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ===== 文章头部 ===== */
.article-hero {
  padding: 128px 0 48px;
  background: linear-gradient(135deg, #EAF1FE 0%, #F8FAFE 45%, #FFFFFF 100%);
  border-bottom: 1px solid var(--border);
  position: relative;
}
.article-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(18, 38, 58, .03) 1px, transparent 1px), linear-gradient(90deg, rgba(18, 38, 58, .03) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}
.article-hero .container { position: relative; z-index: 1; }
.article-title {
  font-size: clamp(30px, 4vw, 40px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-heading);
  max-width: 860px;
  letter-spacing: .01em;
  margin-bottom: 18px;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 30px;
}
.article-meta span { display: inline-flex; align-items: center; gap: 7px; }
.article-meta i { color: var(--primary); font-size: 13px; }
.article-meta .meta-tag {
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 500;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
}
.article-cover {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  aspect-ratio: 16 / 6;
  max-height: 420px;
  border: 1px solid var(--card-border);
  background: var(--primary-light);
}
.article-cover img { width: 100%; height: 100%; object-fit: cover; }

/* ===== 正文区域 ===== */
.article-body-section {
  padding: var(--space-section) 0 56px;
  background: var(--white);
}
.article-main { max-width: 760px; }
.article-content {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-body);
  word-break: break-word;
}
.article-content > * { margin-bottom: 24px; }
.article-content h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-heading);
  margin-top: 40px;
  margin-bottom: 18px;
  padding-left: 16px;
  border-left: 4px solid var(--primary);
  line-height: 1.4;
}
.article-content h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--text-heading);
  margin-top: 32px;
  margin-bottom: 14px;
  line-height: 1.45;
}
.article-content p { margin-bottom: 20px; }
.article-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.article-content a:hover { color: var(--primary-dark); }
.article-content blockquote {
  background: var(--bg);
  border-left: 4px solid var(--primary);
  padding: 18px 24px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--text-heading);
  font-style: normal;
  margin: 28px 0;
}
.article-content blockquote p:last-child { margin-bottom: 0; }
.article-content pre {
  background: #0F1E3C;
  color: #E2E8F0;
  padding: 20px 24px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.7;
}
.article-content code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  background: rgba(27, 107, 255, .08);
  color: var(--primary-dark);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 14px;
}
.article-content pre code { background: transparent; color: inherit; padding: 0; }
.article-content ul, .article-content ol { padding-left: 24px; margin-bottom: 22px; }
.article-content ul li, .article-content ol li { margin-bottom: 8px; }
.article-content ul li::marker { color: var(--primary); }
.article-content ol li::marker { color: var(--accent); font-weight: 600; }
.article-content img {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  margin: 28px 0;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 15px;
  background: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.article-content th {
  background: var(--bg-soft);
  color: var(--text-heading);
  font-weight: 600;
  text-align: left;
  padding: 14px 18px;
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
}
.article-content td {
  padding: 12px 18px;
  border-bottom: 1px solid var(--card-border);
  color: var(--text-body);
}
.article-content tr:last-child td { border-bottom: none; }
.article-content tr:hover td { background: var(--bg); }

/* ===== 内容未找到 ===== */
.article-empty {
  background: var(--white);
  border: 1.5px dashed #C3D4EA;
  border-radius: var(--radius-lg);
  padding: 80px 32px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.article-empty i { font-size: 56px; color: #A0AEC0; margin-bottom: 18px; display: inline-block; }
.article-empty-title { font-size: 24px; font-weight: 700; color: var(--text-heading); margin-bottom: 8px; }
.article-empty p { color: var(--text-muted); font-size: 15px; margin-bottom: 24px; }

/* ===== 侧栏 ===== */
.sidebar-rail { position: relative; }
.sidebar-sticky { position: sticky; top: 100px; display: flex; flex-direction: column; gap: 24px; }
.sidebar-card {
  background: var(--white);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 24px;
  transition: box-shadow .25s ease, border-color .25s ease, transform .25s ease;
}
.sidebar-card:hover { box-shadow: var(--shadow-hover); border-color: rgba(27, 107, 255, .20); }
.sidebar-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  gap: 8px;
}
.sidebar-card h3 i { color: var(--primary); font-size: 15px; }
.service-list { list-style: none; display: flex; flex-direction: column; gap: 14px; }
.service-list li { display: flex; gap: 12px; align-items: flex-start; }
.service-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: 10px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
}
.service-item h4 { font-size: 14px; font-weight: 600; color: var(--text-heading); margin-bottom: 4px; }
.service-item p { font-size: 13px; color: var(--text-muted); line-height: 1.5; }
.hot-list { list-style: none; display: flex; flex-direction: column; gap: 14px; }
.hot-list li { display: flex; gap: 12px; align-items: center; }
.hot-thumb {
  width: 64px;
  height: 48px;
  border-radius: 8px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--primary-light);
}
.hot-thumb img { width: 100%; height: 100%; object-fit: cover; }
.hot-info { flex: 1; min-width: 0; }
.hot-info a { font-size: 14px; font-weight: 500; color: var(--text-heading); line-height: 1.5; display: block; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; transition: color .2s ease; }
.hot-info a:hover { color: var(--primary); }
.hot-info span { font-size: 12px; color: var(--text-muted); }

/* ===== 上下篇 ===== */
.article-pagination { padding: 0 0 56px; background: var(--white); border-top: 1px solid var(--card-border); }
.pagination-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 40px;
  justify-content: space-between;
}
.pagination-item {
  background: var(--white);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
  transition: all .25s ease;
  flex: 1 1 280px;
  max-width: 480px;
  min-width: 0;
}
.pagination-item:hover { box-shadow: var(--shadow-hover); border-color: rgba(27, 107, 255, .20); transform: translateY(-2px); }
.pagination-item.next { text-align: right; margin-left: auto; }
.pagination-label { font-size: 13px; color: var(--text-muted); margin-bottom: 6px; display: flex; align-items: center; gap: 6px; }
.pagination-item.next .pagination-label { justify-content: flex-end; }
.pagination-item a { font-size: 15px; font-weight: 600; color: var(--text-heading); line-height: 1.5; display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; transition: color .2s ease; }
.pagination-item:hover a { color: var(--primary); }
.pagination-back { display: flex; justify-content: center; margin-top: 28px; }

/* ===== 相关推荐 ===== */
.related-section {
  padding: var(--space-section) 0;
  background: var(--bg);
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}
.section-title {
  font-size: clamp(24px, 3vw, 30px);
  font-weight: 700;
  color: var(--text-heading);
  position: relative;
  padding-bottom: 14px;
  margin-bottom: 0;
  letter-spacing: .01em;
}
.section-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 30px;
  height: 4px;
  background: var(--primary);
  border-radius: 4px;
}
.section-sub { font-size: 14px; color: var(--text-muted); }
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--white);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all .25s ease;
  display: flex;
  flex-direction: column;
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: rgba(27, 107, 255, .20); }
.related-cover { aspect-ratio: 16 / 10; overflow: hidden; background: var(--primary-light); }
.related-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s ease; }
.related-card:hover .related-cover img { transform: scale(1.04); }
.related-body { padding: 20px 22px 22px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.related-time { font-size: 13px; color: var(--text-muted); display: flex; align-items: center; gap: 6px; }
.related-body h3 { font-size: 16px; font-weight: 600; color: var(--text-heading); line-height: 1.5; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.related-body .link-more { margin-top: auto; font-size: 14px; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 6px; }
.related-body .link-more i { transition: transform .2s ease; }
.related-body .link-more:hover i { transform: translateX(3px); }

/* ===== 文末 CTA ===== */
.article-cta {
  background: linear-gradient(135deg, #0F1E3C 0%, #12263A 100%);
  padding: 48px 0;
}
.cta-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.cta-info .cta-title { font-size: 22px; font-weight: 700; color: var(--white); margin-bottom: 6px; }
.cta-info .cta-desc { font-size: 15px; color: var(--footer-text); }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ===== 页脚 ===== */
.site-footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: 64px 0 0;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.footer-brand .brand-logo { margin-bottom: 18px; }
.footer-brand .brand-text { color: var(--white); }
.footer-brand p { font-size: 14px; line-height: 1.7; max-width: 320px; }
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 22px;
  height: 3px;
  background: var(--primary);
  border-radius: 3px;
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { color: var(--footer-text); font-size: 14px; transition: all .2s ease; padding-left: 0; }
.footer-links a:hover { color: var(--white); padding-left: 8px; border-left: 2px solid var(--primary); }
.footer-contact p { font-size: 14px; margin-bottom: 10px; display: flex; align-items: center; gap: 10px; }
.footer-contact i { color: var(--primary); width: 16px; text-align: center; }
.footer-bottom {
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13px;
  color: #8CA3C0;
}
.footer-bottom .legal-links { display: flex; gap: 18px; }
.footer-bottom .legal-links a { color: #8CA3C0; font-size: 13px; }
.footer-bottom .legal-links a:hover { color: var(--white); }

/* ===== 滚动进度条 ===== */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--primary), #4A90FF);
  z-index: 1200;
  border-radius: 0 3px 3px 0;
  transition: width .08s linear;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .sidebar-rail { display: none; }
  .article-main { max-width: 100%; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .header-inner { height: 64px; }
  .brand-text { font-size: 18px; }
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 20px 24px;
    box-shadow: var(--shadow-hover);
    border-bottom: 1px solid var(--card-border);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: all .28s ease;
    max-height: calc(100vh - 64px);
    overflow-y: auto;
  }
  .main-nav.open { transform: translateY(0); opacity: 1; visibility: visible; }
  .main-nav .nav-link {
    height: 48px;
    justify-content: flex-start;
    padding: 0 16px;
    font-size: 16px;
    border-radius: 8px;
  }
  .main-nav .nav-link.active::after { display: none; }
  .main-nav .nav-link.active, .main-nav .nav-link:hover { background: var(--primary-light); }
  .nav-toggle { display: flex; }
  .search-box { width: calc(100vw - 44px); }
  .article-hero { padding: 100px 0 36px; }
  .article-title { font-size: 26px; }
  .article-meta { gap: 12px; font-size: 13px; }
  .article-cover { aspect-ratio: 16 / 9; }
  .related-grid { grid-template-columns: 1fr; }
  .cta-bar-inner { flex-direction: column; text-align: center; }
  .cta-actions { justify-content: center; }
}
@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .header-actions .btn-sm { display: none; }
  .btn { width: 100%; }
  .header-actions .btn-primary { display: none; }
  .pagination-inner { flex-direction: column; }
  .pagination-item { max-width: 100%; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .breadcrumb .current { max-width: 200px; }
}

/* roulang page: category1 */
:root{
    --primary: #1B6BFF;
    --primary-dark: #0F52D1;
    --primary-light: #EAF1FE;
    --accent: #FF7A45;
    --bg: #F6F9FC;
    --bg-alt: #EDF3FC;
    --white: #FFFFFF;
    --text: #12263A;
    --text-body: #3D5167;
    --text-light: #718096;
    --border: #D9E4F2;
    --border-deep: #E7EDF5;
    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-sm: 8px;
    --shadow-sm: 0 1px 3px rgba(18,38,58,.05);
    --shadow-card: 0 4px 16px rgba(18,38,58,.06);
    --shadow-hover: 0 12px 32px rgba(18,38,58,.10);
    --shadow-nav: 0 4px 24px rgba(18,38,58,.06);
    --space-section: clamp(64px, 8vw, 104px);
    --space-inner: 32px;
}
*,*::before,*::after{
    box-sizing:border-box;
    margin:0;
    padding:0;
}
html{
    scroll-behavior:smooth;
}
body{
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",sans-serif;
    background:var(--bg);
    color:var(--text-body);
    line-height:1.75;
    font-size:16px;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
}
img{
    max-width:100%;
    display:block;
    object-fit:cover;
}
a{
    color:inherit;
    text-decoration:none;
}
ul,ol{
    list-style:none;
}
button,input{
    font-family:inherit;
}
.container{
    max-width:1200px;
    margin:0 auto;
    padding:0 24px;
    width:100%;
}
/* ========== Header / Nav ========== */
.site-header{
    position:fixed;
    top:0;
    left:0;
    right:0;
    z-index:1000;
    background:rgba(255,255,255,.72);
    backdrop-filter:blur(14px) saturate(160%);
    -webkit-backdrop-filter:blur(14px) saturate(160%);
    border-bottom:1px solid rgba(255,255,255,.45);
    box-shadow:var(--shadow-nav);
    transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.scrolled{
    background:rgba(255,255,255,.97);
    border-color:#E2E8F0;
}
.header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    height:76px;
    position:relative;
    z-index:1001;
}
.brand-logo{
    display:inline-flex;
    align-items:center;
    gap:10px;
    color:var(--text);
    font-weight:700;
    font-size:20px;
    letter-spacing:.01em;
    white-space:nowrap;
}
.brand-icon{
    width:38px;
    height:38px;
    border-radius:10px;
    background:var(--primary);
    color:#fff;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-size:16px;
    box-shadow:0 4px 12px rgba(27,107,255,.25);
    flex-shrink:0;
}
.main-nav{
    display:flex;
    align-items:center;
    gap:28px;
}
.main-nav a{
    color:var(--text);
    font-weight:500;
    font-size:15px;
    line-height:76px;
    position:relative;
    transition:color .25s ease;
    white-space:nowrap;
}
.main-nav a:hover{
    color:var(--primary);
}
.main-nav a.active{
    color:var(--primary);
    font-weight:600;
}
.main-nav a.active::after{
    content:"";
    position:absolute;
    left:0;
    bottom:16px;
    width:100%;
    height:2px;
    background:var(--primary);
    border-radius:2px;
}
.header-actions{
    display:flex;
    align-items:center;
    gap:16px;
}
.header-search{
    position:relative;
}
.search-toggle{
    width:40px;
    height:40px;
    border:none;
    background:transparent;
    color:var(--text);
    border-radius:8px;
    cursor:pointer;
    font-size:15px;
    transition:background .25s ease,color .25s ease;
}
.search-toggle:hover{
    background:var(--primary-light);
    color:var(--primary);
}
.search-box{
    position:absolute;
    right:0;
    top:calc(100% + 12px);
    width:280px;
    display:none;
    align-items:center;
    background:var(--white);
    border:1px solid var(--border);
    border-radius:12px;
    box-shadow:var(--shadow-hover);
    padding:6px;
    gap:6px;
}
.search-box.open{
    display:flex;
}
.search-box input{
    flex:1;
    border:none;
    outline:none;
    padding:8px 12px;
    font-size:14px;
    background:transparent;
    color:var(--text);
}
.search-box button{
    width:36px;
    height:36px;
    border:none;
    background:var(--primary);
    color:#fff;
    border-radius:8px;
    cursor:pointer;
    font-size:14px;
    transition:background .25s ease;
}
.search-box button:hover{
    background:var(--primary-dark);
}
.nav-toggle{
    display:none;
    width:42px;
    height:42px;
    border:none;
    background:transparent;
    cursor:pointer;
    flex-direction:column;
    justify-content:center;
    align-items:center;
    gap:5px;
    border-radius:8px;
}
.nav-toggle span{
    display:block;
    width:20px;
    height:2px;
    background:var(--text);
    border-radius:2px;
    transition:transform .3s ease,opacity .3s ease;
}
.nav-toggle.active span:nth-child(1){
    transform:translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2){
    opacity:0;
}
.nav-toggle.active span:nth-child(3){
    transform:translateY(-7px) rotate(-45deg);
}
.main-nav .nav-btn{
    display:none;
}
/* ========== Buttons ========== */
.btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    font-size:15px;
    font-weight:600;
    padding:14px 28px;
    border-radius:var(--radius-sm);
    border:none;
    cursor:pointer;
    transition:all .25s ease;
    line-height:1;
    font-family:inherit;
    white-space:nowrap;
}
.btn:focus-visible{
    outline:3px solid rgba(27,107,255,.3);
    outline-offset:2px;
}
.btn-primary{
    background:var(--primary);
    color:#fff;
}
.btn-primary:hover{
    background:var(--primary-dark);
    transform:translateY(-2px);
    box-shadow:0 8px 24px rgba(27,107,255,.25);
}
.btn-primary:active{
    transform:translateY(0);
}
.btn-outline{
    background:transparent;
    color:var(--primary);
    border:1.5px solid var(--primary);
}
.btn-outline:hover{
    background:rgba(27,107,255,.06);
}
.btn-white{
    background:#fff;
    color:var(--primary);
}
.btn-white:hover{
    background:var(--primary-light);
    transform:translateY(-2px);
}
.btn-outline-light{
    background:transparent;
    color:#fff;
    border:1.5px solid rgba(255,255,255,.6);
}
.btn-outline-light:hover{
    background:rgba(255,255,255,.1);
    border-color:#fff;
}
.btn-sm{
    padding:10px 20px;
    font-size:14px;
}
.link-more{
    display:inline-flex;
    align-items:center;
    gap:6px;
    color:var(--primary);
    font-weight:600;
    font-size:15px;
    transition:gap .25s ease;
    border-bottom:1px solid transparent;
    padding-bottom:2px;
}
.link-more:hover{
    gap:10px;
    border-bottom-color:var(--primary);
}
/* ========== Page Banner ========== */
.page-banner{
    position:relative;
    padding:150px 0 90px;
    background:linear-gradient(135deg,rgba(234,241,254,.94),rgba(248,250,254,.90),rgba(255,255,255,.96)),url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
    text-align:center;
}
.breadcrumb{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:var(--text-light);
    background:rgba(255,255,255,.7);
    padding:6px 16px;
    border-radius:999px;
    border:1px solid rgba(255,255,255,.6);
    margin-bottom:20px;
}
.breadcrumb a{
    color:var(--primary);
}
.breadcrumb i{
    font-size:10px;
    color:var(--text-light);
}
.breadcrumb span{
    color:var(--text-light);
}
.page-banner h1{
    font-size:36px;
    color:var(--text);
    font-weight:700;
    line-height:1.3;
    letter-spacing:.01em;
    margin:0 auto 16px;
    max-width:720px;
}
.banner-desc{
    max-width:720px;
    margin:0 auto;
    color:var(--text-body);
    font-size:16px;
    line-height:1.75;
}
/* ========== Section ========== */
.section{
    padding:var(--space-section) 0;
    position:relative;
}
.section-head{
    margin-bottom:48px;
    max-width:640px;
}
.section-tag{
    display:inline-block;
    font-size:13px;
    font-weight:600;
    color:var(--primary);
    background:var(--primary-light);
    padding:5px 14px;
    border-radius:999px;
    margin-bottom:14px;
}
.section-head h2{
    font-size:30px;
    color:var(--text);
    font-weight:700;
    line-height:1.35;
    margin-bottom:12px;
    position:relative;
    padding-left:16px;
}
.section-head h2::before{
    content:"";
    position:absolute;
    left:0;
    top:12px;
    width:30px;
    height:4px;
    background:var(--primary);
    border-radius:4px;
}
.section-head p{
    color:var(--text-light);
    font-size:15px;
}
/* ========== Overview ========== */
.overview-section{
    background:var(--white);
}
.overview-img{
    width:100%;
    aspect-ratio:4/3;
    border-radius:var(--radius-lg);
    box-shadow:var(--shadow-card);
}
.overview-content{
    padding-left:48px;
}
.overview-content h2{
    font-size:28px;
    font-weight:700;
    color:var(--text);
    margin-bottom:16px;
    position:relative;
    padding-left:16px;
}
.overview-content h2::before{
    content:"";
    position:absolute;
    left:0;
    top:12px;
    width:30px;
    height:4px;
    background:var(--primary);
    border-radius:4px;
}
.overview-content p{
    margin-bottom:16px;
    color:var(--text-body);
}
.check-list{
    margin-bottom:24px;
}
.check-list li{
    position:relative;
    padding-left:26px;
    margin-bottom:10px;
    color:var(--text-body);
}
.check-list li::before{
    content:"\f00c";
    font-family:"Font Awesome 6 Free";
    font-weight:900;
    position:absolute;
    left:0;
    top:2px;
    color:var(--primary);
    font-size:13px;
}
/* ========== Core Cards ========== */
.core-section{
    background:var(--bg);
}
.feature-card-wrap{
    margin-bottom:24px;
}
.feature-card{
    background:#fff;
    border:1px solid var(--border-deep);
    border-radius:var(--radius-lg);
    padding:30px 28px;
    box-shadow:var(--shadow-card);
    transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
    height:100%;
    position:relative;
}
.feature-card:hover{
    transform:translateY(-4px);
    box-shadow:var(--shadow-hover);
    border-color:rgba(27,107,255,.2);
}
.feature-icon{
    width:52px;
    height:52px;
    border-radius:12px;
    background:var(--primary-light);
    color:var(--primary);
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:20px;
    margin-bottom:20px;
}
.feature-card h3{
    font-size:18px;
    font-weight:600;
    color:var(--text);
    margin-bottom:10px;
}
.feature-card p{
    font-size:14px;
    color:var(--text-body);
    margin-bottom:16px;
}
.feature-card .link-more{
    font-size:14px;
}
@media(min-width:1024px){
    .feature-card-wrap:nth-child(2){
        margin-top:28px;
    }
    .feature-card-wrap:nth-child(3){
        margin-top:14px;
    }
    .feature-card-wrap:nth-child(4){
        margin-top:-14px;
    }
}
/* ========== Stat Band ========== */
.stat-band{
    background:var(--bg-alt);
    padding:56px 0;
    border-top:1px solid var(--border);
    border-bottom:1px solid var(--border);
}
.stat-item{
    text-align:center;
    padding:20px;
}
.stat-num{
    font-family:"DIN Alternate","Roboto",Arial,sans-serif;
    font-size:42px;
    font-weight:700;
    color:var(--text);
    line-height:1.1;
    letter-spacing:.01em;
    position:relative;
    display:inline-block;
}
.stat-num::after{
    content:"";
    display:block;
    width:36px;
    height:4px;
    background:var(--accent);
    border-radius:4px;
    margin:10px auto 0;
}
.stat-num .unit{
    font-size:20px;
    font-weight:600;
    color:var(--text-light);
    margin-left:4px;
}
.stat-label{
    font-size:14px;
    color:var(--text-light);
    margin-top:12px;
}
/* ========== Advantage ========== */
.advantage-section{
    background:var(--white);
}
.advantage-section h2{
    font-size:28px;
    font-weight:700;
    color:var(--text);
    margin-bottom:20px;
    position:relative;
    padding-left:16px;
}
.advantage-section h2::before{
    content:"";
    position:absolute;
    left:0;
    top:10px;
    width:30px;
    height:4px;
    background:var(--primary);
    border-radius:4px;
}
.advantage-list li{
    display:flex;
    gap:16px;
    padding:16px 0;
    border-bottom:1px solid var(--border-deep);
}
.advantage-list li:last-child{
    border-bottom:none;
}
.advantage-icon{
    flex:0 0 44px;
    width:44px;
    height:44px;
    border-radius:10px;
    background:var(--primary-light);
    color:var(--primary);
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:16px;
}
.advantage-list h4{
    font-size:16px;
    font-weight:600;
    color:var(--text);
    margin-bottom:4px;
}
.advantage-list p{
    font-size:14px;
    color:var(--text-body);
}
.adv-img{
    width:100%;
    aspect-ratio:4/3;
    border-radius:var(--radius-lg);
    box-shadow:var(--shadow-card);
}
/* ========== Service Entry ========== */
.service-entry-section{
    background:var(--bg);
}
.service-card{
    background:#fff;
    border:1px solid var(--border-deep);
    border-radius:var(--radius-lg);
    padding:24px;
    display:flex;
    align-items:center;
    gap:16px;
    transition:all .25s ease;
    box-shadow:var(--shadow-sm);
    height:100%;
}
.service-card:hover{
    box-shadow:var(--shadow-hover);
    transform:translateY(-4px);
    border-color:rgba(27,107,255,.2);
}
.service-num{
    font-family:"DIN Alternate","Roboto",Arial,sans-serif;
    font-size:26px;
    font-weight:700;
    color:var(--primary);
    opacity:.6;
    flex-shrink:0;
}
.service-info h3{
    font-size:16px;
    font-weight:600;
    color:var(--text);
    margin-bottom:4px;
}
.service-info p{
    font-size:13px;
    color:var(--text-light);
}
.service-card .arrow{
    margin-left:auto;
    color:var(--primary);
    font-size:15px;
    transition:transform .25s ease;
    flex-shrink:0;
}
.service-card:hover .arrow{
    transform:translateX(4px);
}
/* ========== CTA Band ========== */
.cta-band{
    position:relative;
    background:linear-gradient(135deg,#0B1B33 0%,#12263A 60%,#1B6BFF 160%);
    padding:80px 0;
    text-align:center;
    overflow:hidden;
}
.cta-band::before{
    content:"";
    position:absolute;
    inset:0;
    background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
    opacity:.12;
}
.cta-band .container{
    position:relative;
    z-index:1;
}
.cta-band h2{
    font-size:32px;
    color:#fff;
    font-weight:700;
    margin-bottom:12px;
}
.cta-band p{
    color:rgba(255,255,255,.75);
    max-width:560px;
    margin:0 auto 32px;
    font-size:16px;
}
.cta-actions{
    display:flex;
    justify-content:center;
    gap:16px;
    flex-wrap:wrap;
}
.cta-note{
    margin-top:20px;
    font-size:13px;
    color:rgba(255,255,255,.5);
}
/* ========== Footer ========== */
.site-footer{
    background:#0B1B33;
    color:#B8C7DC;
    padding:70px 0 0;
}
.footer-top{
    display:grid;
    grid-template-columns:2fr 1fr 1fr 1.2fr;
    gap:40px;
    padding-bottom:48px;
    border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand .brand-logo{
    color:#fff;
    margin-bottom:16px;
}
.footer-brand p{
    font-size:14px;
    line-height:1.7;
    color:rgba(255,255,255,.6);
    max-width:320px;
}
.footer-col h4{
    color:#E8F0FE;
    font-size:15px;
    font-weight:600;
    margin-bottom:18px;
}
.footer-links{
    display:flex;
    flex-direction:column;
    gap:10px;
}
.footer-links a{
    color:rgba(255,255,255,.6);
    font-size:14px;
    transition:color .25s ease,padding-left .25s ease,background .25s ease;
    padding:4px 8px;
    border-radius:6px;
    margin-left:-8px;
}
.footer-links a:hover{
    color:#fff;
    padding-left:12px;
    background:rgba(27,107,255,.15);
    border-left:2px solid var(--primary);
}
.footer-contact p{
    display:flex;
    align-items:center;
    gap:10px;
    font-size:14px;
    color:rgba(255,255,255,.6);
    margin-bottom:12px;
}
.footer-contact i{
    width:18px;
    color:var(--primary);
    flex-shrink:0;
}
.footer-bottom{
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:16px;
    padding:20px 0;
    font-size:13px;
    color:rgba(255,255,255,.4);
    flex-wrap:wrap;
}
.legal-links a{
    color:rgba(255,255,255,.4);
    margin-left:16px;
}
.legal-links a:hover{
    color:#fff;
}
/* ========== Responsive ========== */
@media(max-width:1024px){
    .overview-content{
        padding-left:0;
        margin-top:24px;
    }
    .footer-top{
        grid-template-columns:1fr 1fr;
        gap:32px;
    }
    .main-nav{
        gap:18px;
    }
    .header-actions .btn-primary{
        display:none;
    }
    .main-nav .nav-btn{
        display:flex;
        margin-top:12px;
        justify-content:center;
    }
}
@media(max-width:768px){
    .header-inner{
        height:64px;
    }
    .main-nav{
        position:fixed;
        top:64px;
        left:0;
        right:0;
        background:#fff;
        flex-direction:column;
        align-items:stretch;
        padding:16px 24px;
        gap:4px;
        display:none;
        box-shadow:var(--shadow-nav);
        z-index:1000;
        border-top:1px solid var(--border);
        max-height:calc(100vh - 64px);
        overflow-y:auto;
    }
    .main-nav.open{
        display:flex;
    }
    .main-nav a{
        line-height:48px;
        border-radius:8px;
        padding:0 16px;
        font-size:16px;
    }
    .main-nav a.active::after{
        display:none;
    }
    .main-nav a.active{
        background:var(--primary-light);
    }
    .main-nav .nav-btn{
        margin-top:12px;
    }
    .nav-toggle{
        display:flex;
    }
    .page-banner{
        padding:120px 0 60px;
    }
    .page-banner h1{
        font-size:28px;
    }
    .banner-desc{
        font-size:15px;
    }
    .section-head h2{
        font-size:24px;
    }
    .overview-content h2{
        font-size:24px;
    }
    .stat-band .cell{
        margin-bottom:20px;
    }
    .stat-num{
        font-size:36px;
    }
    .cta-band h2{
        font-size:26px;
    }
    .cta-actions .btn{
        width:100%;
    }
    .footer-bottom{
        flex-direction:column;
        text-align:center;
        justify-content:center;
    }
    .legal-links a{
        margin:0 8px;
    }
}
@media(max-width:640px){
    .container{
        padding:0 20px;
    }
    .search-box{
        position:fixed;
        left:20px;
        right:20px;
        top:72px;
        width:auto;
    }
    .footer-top{
        grid-template-columns:1fr;
        gap:28px;
    }
    .section{
        --space-section:56px;
    }
    .feature-card-wrap:nth-child(n){
        margin-top:0;
    }
    .page-banner{
        padding:110px 0 50px;
    }
}
@media(max-width:480px){
    .page-banner h1{
        font-size:24px;
    }
    .banner-desc{
        font-size:14px;
    }
    .overview-img,.adv-img{
        min-height:200px;
    }
    .stat-num{
        font-size:32px;
    }
}

/* roulang page: category2 */
:root {
  --primary: #1B6BFF;
  --primary-dark: #0F52D1;
  --accent: #FF7A45;
  --bg-page: #F6F9FC;
  --bg-block: #EDF3FC;
  --bg-white: #FFFFFF;
  --title-color: #12263A;
  --body-color: #3D5167;
  --muted-color: #718096;
  --border: #D9E4F2;
  --border-light: #E7EDF5;
  --footer-bg: #0B1B33;
  --footer-text: #B8C7DC;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --shadow-sm: 0 1px 3px rgba(18, 38, 58, .05);
  --shadow-card: 0 4px 16px rgba(18, 38, 58, .06);
  --shadow-hover: 0 12px 32px rgba(18, 38, 58, .10);
  --shadow-nav: 0 4px 24px rgba(18, 38, 58, .06);
  --space-section: clamp(64px, 8vw, 104px);
  --space-inner: 32px;
  --container-w: 1200px;
  --transition: .25s ease;
  --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
  --font-num: "DIN Alternate", "Roboto", "Arial", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background: var(--bg-page);
  color: var(--body-color);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }
ul, ol { list-style: none; }
input, textarea, select, button { font-family: inherit; font-size: inherit; line-height: inherit; }
button { cursor: pointer; border: none; background: none; }
:focus-visible { outline: 3px solid rgba(27,107,255,.30); outline-offset: 2px; }

.container { max-width: var(--container-w); margin: 0 auto; padding: 0 24px; }
.section-padding { padding: var(--space-section) 0; }

/* ========== 按钮 ========== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 14px 28px; border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 600; line-height: 1;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn i { font-size: 14px; transition: transform var(--transition); }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(27,107,255,.25); }
.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 22px rgba(27,107,255,.32); }
.btn-primary:active { transform: translateY(0); }
.btn-primary i { font-size: 13px; }
.btn-outline { background: transparent; color: var(--primary); border: 1.5px solid var(--primary); }
.btn-outline:hover { background: rgba(27,107,255,.06); color: var(--primary-dark); transform: translateY(-2px); }
.btn-white { background: #fff; color: var(--primary); border: 1px solid rgba(255,255,255,.2); }
.btn-white:hover { background: #EAF1FE; color: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,.12); }
.btn-sm { padding: 10px 20px; font-size: 14px; }
.btn-block { width: 100%; }
.link-more {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 15px; font-weight: 600; color: var(--primary);
  transition: gap var(--transition);
}
.link-more i { font-size: 13px; transition: transform var(--transition); }
.link-more:hover { color: var(--primary-dark); }
.link-more:hover i { transform: translateX(3px); }

/* ========== 导航 ========== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,.72);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  backdrop-filter: blur(14px) saturate(160%);
  border-bottom: 1px solid rgba(255,255,255,.45);
  box-shadow: var(--shadow-nav);
  transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.site-header.scrolled {
  background: rgba(255,255,255,.97);
  border-bottom-color: #E2E8F0;
  box-shadow: 0 6px 28px rgba(18,38,58,.08);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px; position: relative;
}
.brand-logo { display: inline-flex; align-items: center; gap: 10px; color: var(--title-color); }
.brand-logo:hover { color: var(--title-color); }
.brand-icon {
  width: 40px; height: 40px; border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), #4A8DFF);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 18px;
  box-shadow: 0 4px 12px rgba(27,107,255,.28);
}
.brand-text { font-size: 20px; font-weight: 700; letter-spacing: .01em; }
.main-nav { display: flex; align-items: center; gap: 6px; }
.nav-link {
  padding: 8px 16px; font-size: 15px; font-weight: 500;
  color: var(--title-color); border-radius: var(--radius-sm);
  position: relative; transition: color var(--transition);
}
.nav-link:after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 2px;
  height: 2px; border-radius: 2px; background: var(--primary);
  opacity: 0; transform: scaleX(.5); transition: all var(--transition);
}
.nav-link:hover { color: var(--primary); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active:after { opacity: 1; transform: scaleX(1); }
.header-actions { display: flex; align-items: center; gap: 16px; }
.header-search { position: relative; }
.search-toggle {
  width: 40px; height: 40px; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--title-color); font-size: 16px;
  transition: background var(--transition);
}
.search-toggle:hover { background: var(--bg-block); color: var(--primary); }
.search-box {
  position: absolute; right: 0; top: calc(100% + 12px); width: 300px;
  background: #fff; border-radius: var(--radius-md);
  box-shadow: var(--shadow-hover); border: 1px solid var(--border);
  padding: 8px; display: none; z-index: 20;
}
.search-box.active { display: flex; }
.search-box input {
  flex: 1; padding: 10px 14px; border: none; outline: none;
  font-size: 14px; color: var(--title-color); background: transparent;
}
.search-box button {
  width: 38px; height: 38px; border-radius: var(--radius-sm);
  background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 14px; transition: background var(--transition);
}
.search-box button:hover { background: var(--primary-dark); }
.nav-toggle {
  display: none; width: 42px; height: 42px; border-radius: var(--radius-sm);
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
  background: transparent; border: 1px solid var(--border);
}
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--title-color); border-radius: 2px; transition: all .3s ease; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ========== 页面横幅 ========== */
.page-banner {
  position: relative;
  padding: 150px 0 72px;
  background: linear-gradient(135deg, #EAF1FE 0%, #F8FAFE 45%, #FFFFFF 100%);
  border-bottom: 1px solid var(--border-light);
  overflow: hidden;
}
.page-banner::before {
  content: "";
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(27,107,255,.045) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(27,107,255,.045) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}
.page-banner::after {
  content: "";
  position: absolute; right: -120px; top: -120px;
  width: 420px; height: 420px; border-radius: 50%;
  background: radial-gradient(circle, rgba(27,107,255,.12) 0%, transparent 65%);
  pointer-events: none;
}
.banner-inner { position: relative; z-index: 1; max-width: 840px; }
.breadcrumb {
  font-size: 13px; color: var(--muted-color);
  display: flex; align-items: center; gap: 8px; margin-bottom: 18px;
}
.breadcrumb a { color: var(--muted-color); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--border); }
.breadcrumb .current { color: var(--title-color); font-weight: 500; }
.page-banner h1 {
  font-size: clamp(32px, 4vw, 42px); font-weight: 700;
  color: var(--title-color); line-height: 1.3; letter-spacing: .01em;
  margin-bottom: 18px;
}
.banner-desc {
  font-size: 16px; color: var(--body-color); line-height: 1.8;
  max-width: 720px; margin-bottom: 28px;
}
.banner-meta {
  display: flex; flex-wrap: wrap; gap: 12px;
}
.badge-tag {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px; border-radius: var(--radius-pill);
  background: rgba(27,107,255,.08); color: var(--primary);
  font-size: 13px; font-weight: 500;
}
.badge-tag i { font-size: 12px; }

/* ========== 交错内容块 ========== */
.split-section { padding: var(--space-section) 0; }
.split-section.alt { background: var(--bg-white); border-top: 1px solid var(--border-light); border-bottom: 1px solid var(--border-light); }
.split-section.tint { background: var(--bg-block); }
.split-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 72px); align-items: center;
}
.split-media {
  position: relative; border-radius: var(--radius-lg);
  overflow: hidden; aspect-ratio: 4 / 3;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-light);
}
.split-media img {
  width: 100%; height: 100%; object-fit: cover;
  border-radius: var(--radius-lg);
  transition: transform .5s ease;
}
.split-media:hover img { transform: scale(1.03); }
.split-media::after {
  content: ""; position: absolute; inset: 0;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(255,255,255,.14) 0%, transparent 55%);
  pointer-events: none;
}
.split-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; color: var(--primary);
  background: rgba(27,107,255,.08);
  padding: 6px 14px; border-radius: var(--radius-pill);
  margin-bottom: 16px; letter-spacing: .02em;
}
.split-tag i { font-size: 12px; }
.split-content h2 {
  font-size: clamp(24px, 2.4vw, 30px); font-weight: 700;
  color: var(--title-color); line-height: 1.35;
  margin-bottom: 8px;
  position: relative; padding-bottom: 16px;
}
.split-content h2::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 30px; height: 4px; border-radius: 2px;
  background: var(--primary);
}
.split-content > p {
  font-size: 15px; line-height: 1.8; color: var(--body-color);
  margin: 18px 0 22px;
}
.check-list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 26px; }
.check-list li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 14px; line-height: 1.7; color: var(--body-color);
}
.check-list li i {
  margin-top: 5px; font-size: 14px; color: var(--primary);
  flex-shrink: 0;
}
.split-link { display: flex; gap: 20px; flex-wrap: wrap; }

/* ========== FAQ ========== */
.faq-section { padding: var(--space-section) 0; background: var(--bg-white); border-top: 1px solid var(--border-light); }
.section-head { max-width: 680px; margin-bottom: 42px; }
.section-head .section-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 600; color: var(--primary);
  background: rgba(27,107,255,.08); padding: 6px 14px;
  border-radius: var(--radius-pill); margin-bottom: 14px;
}
.section-head h2 {
  font-size: clamp(26px, 2.6vw, 32px); font-weight: 700;
  color: var(--title-color); line-height: 1.3;
  padding-bottom: 16px; position: relative; margin-bottom: 14px;
}
.section-head h2::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 30px; height: 4px; border-radius: 2px;
  background: var(--primary);
}
.section-head p { font-size: 15px; color: var(--body-color); }
.faq-list { max-width: 820px; }
.faq-item {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  margin-bottom: 14px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.faq-item.active { border-color: rgba(27,107,255,.30); box-shadow: var(--shadow-card); }
.faq-question {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 20px 24px; text-align: left;
  font-size: 16px; font-weight: 600; color: var(--title-color);
  transition: color var(--transition);
}
.faq-question:hover { color: var(--primary); }
.faq-icon {
  width: 30px; height: 30px; flex-shrink: 0;
  border-radius: 50%; background: var(--bg-block);
  display: flex; align-items: center; justify-content: center;
  color: var(--primary); font-size: 15px;
  transition: transform var(--transition), background var(--transition);
}
.faq-item.active .faq-icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
.faq-answer {
  max-height: 0; overflow: hidden;
  transition: max-height .3s ease;
}
.faq-item.active .faq-answer { max-height: 280px; }
.faq-answer-inner {
  padding: 0 24px 20px; font-size: 15px; line-height: 1.75;
  color: var(--body-color); border-top: 1px solid var(--border-light);
  padding-top: 16px;
}
.faq-help {
  margin-top: 28px; display: flex; flex-wrap: wrap; align-items: center; gap: 12px;
  padding: 18px 24px; background: var(--bg-block);
  border-radius: 12px; font-size: 14px; color: var(--body-color);
}
.faq-help a { font-weight: 600; margin-left: 4px; }

/* ========== 表单 / CTA ========== */
.contact-section {
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, #EAF1FE 0%, #F8FAFE 45%, #FFFFFF 100%);
  padding: var(--space-section) 0;
}
.contact-section::before {
  content: "";
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(27,107,255,.04) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(27,107,255,.04) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}
.contact-wrap { position: relative; z-index: 1; }
.contact-panel {
  position: relative; border-radius: var(--radius-lg);
  padding: 40px 36px; color: #EAF1FE;
  background: linear-gradient(135deg, #0B1B33 0%, #122F5C 60%, #153A6B 100%);
  box-shadow: var(--shadow-hover);
  overflow: hidden; height: 100%;
  display: flex; flex-direction: column;
}
.contact-panel::before {
  content: "";
  position: absolute; right: -70px; top: -70px;
  width: 220px; height: 220px; border-radius: 50%;
  background: rgba(27,107,255,.28);
  pointer-events: none;
}
.contact-panel .panel-icon {
  width: 52px; height: 52px; border-radius: 14px;
  background: rgba(255,255,255,.14);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; color: #fff; margin-bottom: 20px;
}
.contact-panel h3 {
  font-size: 24px; font-weight: 700; color: #fff;
  margin-bottom: 10px;
}
.contact-panel > p {
  font-size: 14px; line-height: 1.7; color: #B8C7DC;
  margin-bottom: 28px;
}
.process-timeline { display: flex; flex-direction: column; gap: 0; }
.process-timeline li {
  position: relative; padding: 0 0 26px 40px;
}
.process-timeline li::before {
  content: ""; position: absolute; left: 13px; top: 32px; bottom: -2px;
  width: 1.5px; background: rgba(255,255,255,.20);
}
.process-timeline li:last-child::before { display: none; }
.process-timeline .step-num {
  position: absolute; left: 0; top: 0;
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--primary); color: #fff;
  font-family: var(--font-num); font-size: 12px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 0 4px rgba(27,107,255,.18);
}
.process-timeline li strong {
  display: block; font-size: 15px; font-weight: 600; color: #fff;
  margin-bottom: 4px;
}
.process-timeline li span {
  font-size: 13px; color: #B8C7DC; line-height: 1.6;
}
.contact-card {
  background: #fff; border-radius: var(--radius-lg);
  padding: 36px 34px; box-shadow: var(--shadow-card);
  border: 1px solid var(--border-light);
  height: 100%;
}
.contact-card h3 {
  font-size: 22px; font-weight: 700; color: var(--title-color);
  margin-bottom: 6px;
}
.contact-card .card-sub {
  font-size: 14px; color: var(--muted-color); margin-bottom: 24px;
}
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block; font-size: 14px; font-weight: 500;
  color: var(--title-color); margin-bottom: 7px;
}
.form-group label span { color: var(--accent); margin-left: 2px; }
.form-group input,
.form-group textarea {
  width: 100%; padding: 12px 16px;
  border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  font-size: 14px; color: var(--title-color); background: #fff;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: #A0AEC0; }
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(27,107,255,.15);
  outline: none;
}
.form-group textarea { min-height: 84px; resize: vertical; }
.form-note {
  margin-top: 14px; font-size: 12px; color: var(--muted-color);
  line-height: 1.6;
}
.form-success {
  display: none; margin-top: 16px;
  padding: 12px 16px; border-radius: var(--radius-sm);
  background: rgba(27,107,255,.08); color: var(--primary);
  font-size: 14px; font-weight: 500;
}
.form-success.show { display: block; }

/* ========== 页脚 ========== */
.site-footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  padding-top: 72px;
}
.site-footer .container { max-width: var(--container-w); }
.footer-top {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 40px; padding-bottom: 48px;
}
.site-footer .brand-logo { color: #fff; }
.site-footer .brand-text { color: #fff; }
.footer-brand { max-width: 320px; }
.footer-brand p {
  font-size: 14px; line-height: 1.75; color: var(--footer-text);
  margin-top: 16px;
}
.footer-col h4 {
  font-size: 15px; font-weight: 600; color: #fff;
  margin-bottom: 18px; position: relative; padding-bottom: 10px;
}
.footer-col h4::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 20px; height: 2px; background: var(--primary);
  border-radius: 2px;
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
  font-size: 14px; color: var(--footer-text);
  padding-left: 0; transition: all var(--transition);
}
.footer-links a:hover { color: #fff; padding-left: 6px; }
.footer-contact { display: flex; flex-direction: column; gap: 12px; }
.footer-contact p {
  font-size: 14px; color: var(--footer-text);
  display: flex; align-items: center; gap: 10px; line-height: 1.5;
}
.footer-contact p i { color: var(--primary); width: 16px; text-align: center; font-size: 14px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 20px 0 28px;
  display: flex; flex-wrap: wrap; gap: 14px; align-items: center;
  justify-content: space-between;
  font-size: 13px; color: #8AA0BC;
}
.footer-bottom .legal-links { display: flex; gap: 18px; }
.footer-bottom .legal-links a { color: #8AA0BC; font-size: 13px; }
.footer-bottom .legal-links a:hover { color: #fff; }

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { max-width: 100%; }
  .split-grid { gap: 40px; }
}
@media (max-width: 768px) {
  .main-nav {
    position: absolute; top: 72px; left: -24px; right: -24px;
    background: #fff; flex-direction: column; align-items: stretch;
    padding: 16px 24px; gap: 4px;
    border-bottom: 1px solid var(--border-light);
    box-shadow: 0 20px 40px rgba(18,38,58,.10);
    display: none;
  }
  .main-nav.open { display: flex; }
  .nav-link { padding: 14px 12px; font-size: 15px; border-radius: var(--radius-sm); }
  .nav-link:after { display: none; }
  .nav-link.active { background: rgba(27,107,255,.08); }
  .nav-toggle { display: flex; }
  .header-actions .btn-primary { display: none; }
  .search-box { width: 240px; right: 50px; }
  .page-banner { padding: 120px 0 56px; }
  .split-grid { grid-template-columns: 1fr; }
  .split-media { aspect-ratio: 16 / 10; }
  .split-section:nth-of-type(even) .split-grid .split-media { order: 1; }
  .split-section:nth-of-type(even) .split-grid .split-content { order: 2; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .contact-panel { padding: 30px 24px; }
  .contact-card { padding: 28px 22px; }
}
@media (max-width: 520px) {
  .page-banner h1 { font-size: 26px; }
  .btn { width: 100%; }
  .split-link .btn { width: auto; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .banner-meta { flex-wrap: wrap; }
  .process-timeline li { padding-left: 34px; }
  .header-inner { height: 64px; }
  .nav-toggle { width: 38px; height: 38px; }
  .brand-icon { width: 36px; height: 36px; font-size: 16px; }
  .brand-text { font-size: 18px; }
}